JP2017048502A - Double sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double sliding door device with two door bodies that are lined up and abutted to each other on a straight line when an opening is closed by the two door bodies.SOLUTION: A bracing device 21 and a support roller 15a are provided on a first door body 12, the bracing device being liftable and detachably fitted facing upward to an upper first rail 9, and the support roller being fitted on and supported by a lower first rail 7. A lower bearing unit 35a, an upper support pin 76a, and an upper bearing unit 36a are provided on a second door body 13 on outside, the lower bearing unit being detachably fitted to a lower support pin 75a that faces upward on a parallel link 67a pivotally supported by a lateral motion unit 66 inserted from a rail edge in a lower second rail 8, the upper support pin facing downward and being at a tip of a parallel link 69a pivotally supported by a lateral motion unit 68 inserted from a rail edge in an upper second rail 10, and the upper bearing unit being detachably fitted in a horizontal direction and having an opening/closing lid for preventing fall-off of the upper support pin 76a that has been fitted.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a sliding door device in which an opening is closed by a first door unit and a second door unit that are serially connected in the direction of the lateral path on the same lateral path.

  As this kind of sliding door device, as described in the cited document 1, the first door unit is supported so as to be able to move laterally on the entire side of the lateral movement path, and the second door unit is moved sideways. It is supported by two sets of upper and lower laterally movable bodies that are supported so as to be laterally movable in parallel with the lateral movement path on the inner side of the path through two upper and lower parallel links crossing both upper and lower sides of the lateral movement path, and Between the inner position located on the lateral movement path and the outer position located outside the first door alone located on the lateral movement path, the second door alone is supported in the inner position. A two-position holding means for selectively holding the second door by an elastic force and an inside / outside position switching means for the second door alone, wherein the inside / outside position switching means is a first in series on the lateral movement path. When the single door unit and the second single door are moved sideways relative to each other in the overlapping direction Translated the second door unit from the inner position to the outer position, and moved the first and second unit doors that overlap each other relatively in the overlapping release direction opposite to the overlapping direction. In some cases, there is known a sliding door device including a cam and a cam driven roller for translating the second door unit at the outer position at the stroke end to the inner position.

JP 2003-138835 A

  In the sliding door device described in Patent Document 1 as described above, when the sliding door device is installed as a means for opening and closing the opening of the storage space, the first door alone located inside when the sliding door is opened is compared. Although it can be supported in a predetermined manner so as to be laterally movable, the second door alone located outside when the sliding door is opened cannot be easily attached. That is, the second door unit is attached after the first unit unit is installed, but the upper and lower ends of the second unit unit are located inside the lateral movement path in which the first unit unit moves laterally. It is supported by a pair of parallel links in the door lateral movement direction so as to be movable back and forth between the position and the outer position when moving outside the first door alone. Thus, in the conventional configuration described in Patent Document 1, particularly with respect to the second door unit alone, the upper end side of the second door unit has a pair of parallel links in the door lateral movement direction, and the inner ends of the parallel links. A laterally-moving body that is pivotally supported, and an upper second rail that supports the laterally-moving body so as to be laterally movable are assembled in advance, and a pair of parallel links in the lateral direction of the door are previously provided on the lower end side of the second door alone. The upper second rail is attached to the upper predetermined position of the storage space, and the inner ends of the pair of parallel links on the lower end side of the second door are attached to the lower predetermined position of the storage space. Since the second door unit can be attached by being engaged with the lower second rail, the door unit is held in a predetermined position with both sides of the door unit being held with both hands. Assembly of common sliding doors, such as those set in Compared to the method, there is a problem requiring a great deal of labor and time to assemble the device.

The present invention proposes a sliding door device that can solve the above-mentioned conventional problems, and the sliding door device according to the present invention understands the relationship with embodiments described later. For the sake of simplicity, when the reference numerals used in the description of the embodiment are shown in parentheses, the first door unit (12) and the first door unit (12) enter the lateral movement path. A sliding door device (1) that closes the opening (2) by a second door single body (13) in series with the first door single body (12), wherein the second door single body (13) Two sets of upper and lower lateral motion units (66, 68) supported so as to be laterally movable in parallel with the lateral motion path on the inner side of the path, and two sets of upper and lower traversing the upper and lower sides of the lateral motion path, respectively It is supported via a pair of parallel links (67a, 67b, 69a, 69b) in the moving direction, and an inner position located on the lateral movement path and a first position located on the lateral movement path. A parallel link that is supported so as to be able to move back and forth in parallel between the outer position located outside the door unit (12) and that selectively holds the second door unit between the inner position and the outer position by an elastic force. A posture holding mechanism (81) and an inside / outside position switching means for the second door unit are provided, and the inside / outside position switching unit includes a first door unit (12) and a second door unit (in series with each other on the lateral movement path). When 13) is relatively laterally moved in the overlapping direction, the second door unit (13) is translated from the inner position to the outer position, and the first door unit (12) and the second When the door unit (13) is overlapped and moved relatively in the release direction, the cam (17, 17) is used to translate the second door unit (13) at the outer position at the stroke end to the inner position. 28) and a sliding door device provided with cam driven rollers (78a, 79a),
Inside the lateral movement path, the first door unit (12) is interposed via a pair of supporting rollers (15a, 15b) in the door lateral movement direction pivotally supported on the lower end side of the first door unit (12). The lower first rail (7) that supports the lateral movement freely, the door side movement direction pair of steady rests (21) attached inside the upper end side of the first door unit (12), the lower release A groove-shaped upper first rail (9), which is provided on the lower side of the lower first rail (7), laterally moves the lower lateral body unit (66) inserted from the end of the rail in a constant posture. A rectangular tube-shaped lower second rail (8) having a slit (8a) on the lower side, and a space on the upper side of the upper first rail (9) with a space therebetween. An upper second rail (10) in the form of a square tube having a slit (10a) on the lower side is provided to hold the upper side moving body unit (68) inserted from above in a fixed posture so as to freely move laterally,
The steady rest (21) is configured to be switchable between an ascending limit height fitted to the upper first rail (9) and a descending limit height separated downward from the upper first rail (9),
The lower parallel links (67a, 67b) are provided under the lower lateral motion unit (66) via a support shaft (73) passing through the slit (8a) of the lower second rail (8). A lower support pin (75a, 75b) projecting upward is provided on the upper end of the tip end of the upper parallel rail (69a, 69b) of the upper second rail (10). It is pivotally supported on the lower side of the upper lateral motion unit (68) through a pivot (73) that passes through the slit (10a), and the lower support pin (75a, 75b) is provided with upper support pins (76a, 76b) projecting downward concentrically with
On the lower end side of the second door unit (13), a lower pin hole (42) that is vertically detachable with respect to each of the lower support pins (75a, 75b) is provided. ) On the upper end side of the upper support pins (76a, 76b), the upper support pins (76a, 76b) fitted in the inner and outer horizontal directions orthogonal to the door lateral movement direction. An upper pin hole (47) provided with an opening / closing door (48) for preventing the escape of the door is provided.

  When installing the sliding door device according to the present invention described above, the upper and lower laterally moving body units each pivotally supported by the inner ends of the pair of parallel links in the door lateral direction are respectively connected to the lower second rail and the upper side The two rails are inserted into the two rails from the end of the rail so that each parallel link is located on the lower side of the rail, and the upper and lower second rails are attached to the upper and lower predetermined positions of the opening of the storage space. Next, the first door unit is supported by the lower first rail by placing a pair of rollers in the lateral direction of the door at the lower end side of the first door unit on the lower first rail. With a contact point with the roller as a fulcrum, swing a little upright without feeling the weight of the door, and a pair of steady rests in the lateral direction of the door that is switched to the lower limit height on the upper end side of this first door alone. Position directly below the upper first rail. In this state, the two steady rests are raised to the upper limit height and fitted into the upper first rail, thereby completing the mounting of the first door alone.

  The second door unit has a pair of lower door lateral movement directions in a posture that extends forward on the lower side of each of the upper and lower second rails, that is, a posture when the second door unit is switched to the outer position. A pair of lower pin holes in the door lateral movement direction on the lower end side of the second door unit are fitted to the lower support pins at the ends of the parallel links. At this time, the weight of the second door alone is received by a laterally movable body supported in a fixed posture in the lower second rail via a pair of parallel links in the lower side lateral movement direction. You can work without feeling the weight. That is, the upper end side of the second door unit is swung toward the upper second rail, and the downward upper support pins at the ends of the pair of parallel links in the upper door lateral movement direction are The door is horizontally inserted into the pair of upper pin holes in the door lateral movement direction with the open / close door open. As a result, since the second door unit is in the intended vertical posture, the attachment of the second unit is completed by closing the open / close doors of the pair of upper pin holes in the door lateral movement direction.

  As described above, according to the configuration of the present invention, the first door unit can be easily and easily attached to a stable state in which the lower end side does not swing back and forth. If both the upper and lower second rails are installed at predetermined positions with the laterally moving unit with the inner ends of the parallel links being pivotally supported from the ends of the rails, the upper and lower second rails The upper and lower parallel links, whose inner ends are pivotally supported by the laterally moving bodies in the two rails, extend from the lower side of the upper and lower second rails to the horizontal front without additional support such as support by hand. You can keep it in a posture. Therefore, by simply fitting each lower pin hole of the second door unit to the upward lower support pin at the end of each lower parallel link, The second door can also be supported by a link, and the second upper door can be fitted to the upper pin on the upper end side of the second door alone. The second door can be easily and easily mounted between the tops of the parallel links on both the upper and lower sides by simply swinging the unit inward and standing up. Installation of the entire apparatus can be performed reliably with less effort and time.

  In carrying out the present invention, the lower laterally movable body unit (66) supported to be laterally movable on the lower second rail (8) and the laterally movable member to be supported on the upper second rail (10). Each of the upper lateral motion unit (68) is a pair of lateral motion bodies in the lateral direction of the door provided with a plurality of rollers (72) for maintaining a fixed posture with respect to the upper and lower second rails (8, 10). (70a, 70b) and a connecting member (71) that connects these laterally moving bodies in the upper and lower second rails (8, 10), and parallel links (67a, 67b) to each laterally moving body (70a, 70b). , 69a, 69b) is preferably pivotally supported. According to this configuration, in the state before attaching the second door alone, not only the distance between the pair of parallel links in the upper door lateral movement direction but also the distance between the pair of parallel links in the lower door lateral movement direction. Because it is in a fixed state, when mounting the second door alone, lift this second door alone and place it on the lower support pin facing upward at the tip of the pair of parallel links in the lower door lateral movement direction. The operation of fitting the lower pin hole of the single door can be performed very easily and efficiently as compared with the configuration in which the pair of parallel links in the lower door lateral movement direction can be freely laterally moved.

  Further, each parallel link posture holding mechanism is built in the laterally movable body unit, and each parallel link (67a, 67b, 69a, 69b) has a posture when the second door unit (13) is in the inner position. Further, the second door unit (13) can be configured to be held alternatively by the posture when it is in the outer position. According to this configuration, in the state before the second door unit (13) is attached, the pair of parallel links (69a, 69b) on the upper door lateral movement direction as well as the pair of parallel doors on the lower door lateral movement direction are provided. The links (67a, 67b) are also manually pulled out to the outside (67a, 67b, 69a, 69b), the second door unit (13) is switched to the position when it is in the outer position, and the position is changed. Since the parallel link posture holding mechanism (81) provided in each parallel link (67a, 67b, 69a, 69b) can be held, outside the first door unit (12) attached first, It is possible to easily support the two-piece single unit (13) at the tip of each of the upper and lower parallel links (67a, 67b, 69a, 69b) .This configuration is implemented in combination with the configuration described in the previous paragraph. It is particularly effective.

  The lower first rail (7) is formed on the outer upper side surface of the lower second rail (8) attached to the front side of the floor plate (6) of the storage space opened and closed by the sliding door device. It is desirable to form it by a concave groove. According to this configuration, the members constituting the lower first rail can be shared by the lower second rail itself, and not only the number of parts but also the number of rail mounting steps can be reduced to reduce the cost. I can do it. The upper second rail (10) is attached to the lower side of the top plate (5) of the storage space opened and closed by the sliding door device, and the upper second rail (10) is connected to the upper second rail (10). An L-shaped member (11) that forms a laterally recessed groove space that the front side releases is integrally provided below the rail (10), and the upper first rail (9) is connected to the L-shaped member (11). Can be integrally formed on the lower side of the front side. According to this configuration, it is possible to easily attach both the upper first rail and the upper second rail while maintaining the relative positional relationship with a single rail component. In addition, the vertical plate portion of the L-shaped member can be used as a mounting seat for various parts necessary for the implementation of the sliding door device as described in the embodiments described later.

  The steady rest (21) includes a lift shaft (21a) penetrating through a steady rest support body (20) attached to the inside of the first door unit (12), and the lift shaft (21a). ) Is formed from a fitting member (roller (21b)) attached to the upper end of the upper and lower parts, and a recess (23) is formed at an intermediate height of the elevating shaft (21a), and the steady rest support body (20) The operation plate (25) provided with a locking hole (24) through which the elevating shaft (21a) passes and supported so as to be movable in the horizontal direction inside and outside perpendicular to the door lateral movement direction, and the operation plate An elastic body (26) for urging (25) in a direction away from the first door unit (12) is provided, and the urging force of the elastic body (26) is used for the engagement hole (24) of the operation plate (25). The elevating shaft body (21a) is configured to be held at the upper limit height by fitting the inner side into the recess (23) of the elevating shaft body (21a), and the operation plate (25) For pushing in which is exposed to the inside of the steady rest support body (20) An operation portion (25a) is provided, and the operation plate (25) is moved against the urging force of the elastic body (26) by the pushing operation portion (25a), and the engagement plate (25) is engaged. By positioning the stop hole (24) concentrically with the elevating shaft (21a), the elevating shaft (21a) can be lowered to its lower limit by its own weight. The fitting member is preferably a roller that can rotate around a vertical axis, but is formed of a material with low frictional resistance so that the lateral movement in the state of being fitted to the upper first rail can be smoothly performed. It may be a non-rotating block shape.

  According to this structure, before attaching a 1st door simple substance, the said raising / lowering shaft body (fitting member of an upper end) is lowered | hung to a descent | fall limit height, and the 1st door simple substance of this state is a roller of the lower end side. Is placed on the lower first rail, the first door unit is raised to the upper first rail side, and the upper end fitting member of the elevating shaft body is positioned just below the upper first rail. Position. At this time, the concave portion of the lifting shaft body is located below the locking hole of the operation plate, and the inner surface of the locking hole of the operation plate is brought to the peripheral surface of the lifting shaft body by the urging force of the elastic body. Since it is only abutting, the upper first rail is raised by raising the upper end fitting member to the upper limit height only by pushing up the lifting shaft projecting to the lower side of the steady rest support body with a fingertip. Can be fitted inside. When the elevating shaft is raised to the upper limit height, the operation plate is positioned at the same height as the recess of the elevating shaft, so that the operation plate moves horizontally by the urging force of the elastic body, and the inside of the locking hole. The side is fitted into the recess of the lifting shaft, and the lifting shaft (fitting member at the upper end) is automatically held at the upper limit height. As described above, the mounting operation of the first door unit is carried out by placing the first door unit on the lower first rail while holding both sides of the first unit from outside with both hands. Subsequently, for example, with the fingertips of both hands gripping both sides of the first door unit, the lifting shafts of the pair of steady rests in the door lateral movement direction located inside the first door unit are as described above. The first door unit can be easily and easily installed at a predetermined position simply by operating the switch.

  The upper support pins (76a, 76b) protruding downward from the lower ends of the upper parallel links (69a, 69b) are provided with flange portions (77), and the second door unit (13) The flange portion (77) is fitted into the upper pin hole (47) on the upper end side when the upper support pins (76a, 76b) are fitted horizontally in the upper pin hole (47). A recessed groove (47a) can be provided. According to this configuration, the weight of the second door unit can be applied to the upper parallel link via the flange portion of the upper support pin and the locking groove fitted to the flange portion. The weight of the second door unit can be received by both the upper parallel link and the lower parallel link by bending of the upper parallel link and backlash of each part. As a result, compared to the case where the entire weight of the second door alone is received only by the lower parallel link, the burden on the strength of the parallel link and the laterally movable body unit that pivotally supports the parallel link is reduced. I can do it. In implementing this configuration, the locking groove into which the flange portion is fitted is not only the upper pin hole, but also when the open / close door closes the upper pin hole, the flange portion of the upper support pin It can also be provided inside the opening / closing door adjacent to the door.

  The upper pin hole (47) provided on the upper end side of the second door unit (13) is open to the upper bearing unit (36a, 36b) attached to the second door unit (13). The open / close door (48) that opens and closes the upper pin hole (47) is formed in the door lateral movement direction so as to open and close the inner release portion (47a) of the upper pin hole (47). It is mounted in the upper bearing unit (36a, 36b) so as to be laterally movable, and is configured to be biased and held in the closed position by the elastic body (50), and is opened against the elastic body (50). An operation section (52) for performing the above operation can be provided on the open / close door (48). According to this configuration, an external force in a direction in which the downward upper support pin fitted into the upper pin hole comes out of the inner release portion of the upper pin hole acts between the upper support pin and the second door alone. Even so, the upper support pin can be securely held in the upper pin hole by the opening and closing door. Specifically, it is desirable to configure as follows.

  That is, between the upper bearing unit (36a) having the inner end side upper pin hole (47) on the side facing the first door unit (12), and the inner end of the second door unit (13), An operation through hole (58) penetrating in the door lateral movement direction is formed as an operation portion, and the opening / closing door (48) can be pushed and opened by a rod-shaped member inserted into the operation through hole (58). It is desirable to configure as follows. According to this configuration, when the second door unit is attached, the inner end portion of the second door unit, that is, the inner end portion to which the upper bearing unit having the inner end side upper pin hole is attached is the first door. Even in the state of overlapping with the single unit, the operation through-hole opened at the inner end of the second single unit is not affected by the presence of the single single unit, for example, a suitable tool such as a screwdriver (bar-shaped Member) can be used to easily open and close the door from the inner end of the second door alone.

  Further, the upper bearing unit (36b) having the outer end side upper pin hole (47) on the side opposite to the side facing the first door unit (12) has an operation portion provided on the open / close door (48). An operation opening (51) for operating (52) from the inside of the second single door (13) can be provided. According to this configuration, when the second door unit is attached, the outer end portion of the second door unit, that is, the outer end portion to which the upper bearing unit having the outer end side upper pin hole is attached is first. As long as the second door unit is positioned so that it does not overlap with the single unit, the operation part provided on the open / close door through the opening for operation with the fingertip inserted inside the second door unit To open and close the doors directly and easily. Therefore, this configuration can exert its effect by being implemented in combination with the configuration described in the previous paragraph. Specifically, it is desirable that the upper bearing unit on the inner end side and the upper bearing unit on the outer end side are configured in the same structure as in the embodiments described below.

FIG. 1A is a partial cross-sectional plan view showing an upper guide mechanism in a closed state in which the opening is closed between the first door and the second door, and FIG. 1B is an enlarged cross-sectional plan view of the main part. (Both states without the upper second rail). FIG. 2A is a partially cross-sectional plan view showing the upper guide mechanism in a state where the second door unit has begun to open, and FIG. 2B is an enlarged cross-sectional plan view of the main part (both of which omit the upper second rail). State). FIG. 3A is a partially cross-sectional plan view showing the upper guide mechanism in a state in which the opening of the second door unit is advanced, and FIG. 3B is a state in which the opening of the door is completed in which the second door unit overlaps the outside of the first door unit. FIG. 5 is a partially cross-sectional plan view showing an upper guide mechanism. (All are without the upper second rail) 4A is a partial cross-sectional plan view showing the upper guide mechanism in a state in which the first door unit has begun to move from the closed state shown in FIG. 1A, and FIG. 4B is a diagram illustrating the first door unit inside the second door unit. It is a partial cross-sectional top view which shows the upper side guide mechanism of the door opening completion state piled up on (all the state which excluded the upper 2nd rail). FIG. 5 is a partially longitudinal left side view showing the support state of the first door alone (left side view of a view of the opening to be opened and left side with the left side plate, from the side with the right side plate of the opening being opened) The view seen is called the right side view. FIG. 6 is a partially longitudinal left side view showing the support state of the second door alone. FIG. 7 is a partially longitudinal left side view showing a state where the second single door is overlapped on the outside of the first single door. 8A is a plan view of the first door alone, FIG. 8B is a rear view of the first door alone (the view seen from the inside of the opening to be opened and closed is referred to as a rear view, the same applies hereinafter), and FIG. It is a bottom view of a single door. 9A is a right side view of the single first door, and FIG. 9B is a left side view of the single first door. FIG. 10A is a longitudinal rear view showing the bearing member at the lower end on the inner end side of the single first door, and FIG. 10B is a left side view of the longitudinal longitudinal section. FIG. 11A is a partially cross-sectional plan view showing a cam-attached member and a steady-state unit at the upper end on the inner end side of the first door alone, and FIG. 12A is a longitudinal side view showing the steady-state unit in the operating state, FIG. 12B is a longitudinal side view showing the steady-state unit in the retracted state, and FIG. 12C is a cross-sectional plan view of the steady-state unit in the working state. is there. 13A is a plan view of the second door unit, FIG. 13B is a rear view of the second unit unit, and FIG. 13C is a bottom view of the second unit unit. FIG. 14A is a left side view of the second unit alone, and FIG. 14B is a right side view thereof. 15A is a longitudinal rear view showing the bearing unit attached to the lower end of the second door unit, FIG. 15B is a longitudinal side view showing the mounting state of the coaxial receiver unit, and FIG. 15C shows the coaxial receiver unit as a second unit. FIG. 15D is a bottom view showing the attachment state of the coaxial receiving unit, as seen from the back side. FIG. 16A is a rear view showing a portion of the upper end on the inner end side of the second door unit, to which the bearing unit is attached, and FIG. 16B is a state in which the bearing unit holds the upper support pin of the parallel link. FIG. 17A is a front view showing a state where the outer member is removed from the bearing unit in the state shown in FIG. 16B, and FIG. 17B is a vertical side view of the bearing unit in the state shown in FIG. 16B. FIG. 18A is a cross-sectional plan view showing the state before the bearing unit holds the upper support pin of the parallel link, and FIG. 18B shows the crossing when the coaxial support unit is ready to receive the upper support pin of the parallel link. FIG. 18C is a cross-sectional plan view showing a state in which the coaxial receiving unit holds the upper support pin of the parallel link. 19A is a cross-sectional plan view showing the operating state of the second door single unit positioning means, and FIG. 19B is a front view of the main part of the second door single unit shown in FIG. 19A as viewed from the inside of the second door single unit. FIG. 19C is a vertical side view showing the second door single unit positioning means shown in FIG. 19A. FIG. 20A is a plan view of a second door single locking member used for the second door single positioning means, FIG. 20B is a front view of the second door single locking member viewed from the outside, and FIG. XX sectional drawing of 20A, FIG. 20D is the perspective view which looked at the 2nd single door locking member from diagonally lower side. FIG. 21A is a plan view showing a lower lateral body unit with parallel links, FIG. 21B is a front view thereof, FIG. 21C is a bottom view thereof, and FIG. 21D is a left side view thereof. 22A is a plan view showing an upper lateral moving body unit with parallel links, FIG. 22B is a front view thereof, FIG. 22C is a bottom view thereof, and FIG. 22D is a left side view thereof. FIG. 23A is a cross-sectional plan view when the parallel link posture holding mechanism built in the laterally moving body unit holds the second door alone at the inner position, and FIG. 23B shows the parallel link posture holding mechanism in the second position. It is a cross-sectional top view when the door simple substance is hold | maintained in an outer position. FIG. 24A is a front view and a longitudinal side view showing a cam driven locking piece of the parallel link posture holding mechanism, and FIG. 24B is a front view of a support member that supports the cam driven locking piece of the parallel link posture holding mechanism. FIG. 24C is a front view and a side view showing a cam follower and a hydraulic damper constituting the buffer means. FIG. 25A is a plan view showing a state where the first door unit is attached prior to the second door unit, and FIG. 25B is a cross-sectional plan view thereof. FIG. 26A is a plan view showing a state when the second door unit is attached after the first door unit is attached, and FIG. 26B is a cross-sectional plan view thereof.

  The opening 2 of the storage space that the sliding door device 1 shown in FIGS. 1 to 4 opens and closes includes left and right side plates 3 and 4 shown in FIGS. 1 to 4, and a top plate 5 and a floor plate shown in FIGS. 5 to 7. 6 is formed in a front rectangular shape. As shown in FIGS. 5 to 7, a lower first rail 7 and a lower second rail 8 are horizontally disposed on the front side of the floor plate 6, and the upper first rail is disposed below the top plate 5. The rail 9 and the upper second rail 10 are disposed horizontally. The lower second rail 8 is a rectangular tube having a slit 8a along the length direction on the lower side, and is a groove shape in which the supporting rollers are rotatably fitted inside the vertical wall portions. Rail portions 8b and 8c are provided.

  The lower first rail 7 is integrally formed with the lower second rail 8 by a concave groove formed at a position adjacent to the upper front side of the upper horizontal plate portion 8 d of the lower second rail 8. 8e is a mounting plate portion that is connected in a cantilever manner from the upper horizontal plate portion 8d of the lower second rail 8, and this mounting plate portion 8e is screwed onto the floor plate 6. The upper second rail 10 is the same as the lower second rail 8 in a rectangular tube shape having slits 10a along the length direction on the lower side, and support rollers are provided inside both vertical wall portions. Groove-shaped rail portions 10b and 10c that are movably fitted are provided. Reference numeral 10d denotes a mounting plate portion that is continuously connected in a horizontal cantilevered manner from the lower end of the upper second rail 10 to the inside. The upper second rail 10 is integrally formed with an L-shaped member 11 comprising a vertical plate portion 11a connected directly below the vertical wall portion on the rear side and a horizontal plate portion 11b connected to the front side horizontally from the lower side of the vertical plate portion 11a. A lateral groove space that is open on the front side is formed between the horizontal plate portion 11 b of the L-shaped member 11 and the upper second rail 10. The upper first rail 9 has a lower release groove shape that is integrally formed on the lower side of the front side of the horizontal plate portion 11b of the L-shaped member 11. The upper second rail 10 is attached by screwing the attachment plate portion 10d to the lower side surface of the top plate 5 in a state where the upper second rail 10 is fitted in the recessed groove portion formed on the lower side surface of the top plate 5. The positions are positions parallel to each other immediately above the lower second rail 8. As a result, the upper first rail 9 is positioned in parallel with each other directly above the lower first rail 7.

  The opening 2 is opened and closed by a first door single unit 12 and a second door single unit 13 which are horizontally movable. As shown in FIGS. 1 to 4, the first door unit 12 and the second door unit 13 have a lateral width that is a little more than half the inner width of the opening 2, and as shown in FIG. 1A, When the single door 12 and the second single door 13 face each other and the surfaces thereof are located on one vertical plane, the opening 2 is closed. In the following description, as shown in FIG. 1A, when the opening 2 is in a state where the first door 12 and the second door 13 are closed, the ends of the doors 12 and 13 that face each other are the inner ends. And the opposite end is referred to as the outer end. And the position of the 1st door single-piece | unit 12 and the 2nd door single-piece | unit 13 in the state which concerns is called a 1st door single-piece | unit fixed position and a 2nd single-piece | unit single-piece fixed position, respectively. Thus, as shown in FIG. 1A, when the opening 2 is in a state in which the first door 12 and the second door 13 are closed, the outer ends of the doors 12 and 13 are arranged on the left and right side plates 3. , 4 slightly covers the front side. When the opening 2 is opened, as shown in FIG. 3B, the right-side open state in which the second single door 13 overlaps the outside of the first single door 12 in the first single door position, and the first single door As shown in FIG. 4B, the first door unit 12 in the fixed position laterally moves to the lateral movement limit position adjacent to the right side plate 4, and the second door unit 13 overlaps the outside of the first door unit 12. The left-side release state is selected. The position of the second single door 13 in the right-side released state is referred to as a second single door lateral movement limit position, and the position of the first single door 12 in the left-side released state is referred to as a first single door lateral movement limit position. Called.

  First, the support structure of the first door unit 12 will be described in detail. As shown in FIGS. 8 and 9, the first door unit 12 has an inner side (the side facing the opening 2, the same applies hereinafter). A pair of bearing members 14a and 14b are attached to the lower end portion in the door lateral movement direction (right and left front direction of the opening 2, the same applies hereinafter), and the support rollers 15a and 15b are flush with both the bearing members 14a and 14b. Thus, the shaft is rotatably supported around a support shaft in the front-rear horizontal direction orthogonal to the door lateral movement direction. Among the bearing members 14a and 14b, the bearing member 14b on the outer end side of the first door unit 12 has an inner surface of the left side plate 3 when the first door unit 12 is in the first unit position. An abutting surface 16 made of a cushioning material such as rubber is provided, and the bearing member 14a on the opposite inner end side is flush with the lower end of the first door unit 12 as shown in FIGS. 8C and 10. A grooved cam 17 is formed on the lower surface of the lower end overhanging portion 14c. The lower end overhanging portion 14 c has a half on the first door unit 12 side entering a notch formed in the first door unit 12, and the grooved cam 17 has a bottom from the bottom of the first door unit 12. As seen (see FIG. 8C), from the inner end portion (the end portion on the side close to the inner end of the first door unit 12) that has entered the thickness of the first door unit 12, the inside of the first door unit 12 It inclines over the outer end part which protrudes from a side surface, and the outer end part of the grooved cam 17 is released toward the inner end side of the first door unit 12.

  The first door unit 12 is provided with a pair of steady-rest units 18a and 18b in the lateral direction of the door so as to be positioned directly above the bearing members 14a and 14b at the inner upper end. A cammed member 19 is attached so as to be adjacent to the upper side of the steadying unit 18 a on the inner end side of the single unit 12. The steady-rest units 18a and 18b have the same structure, and as shown in FIGS. 11 and 12, a lift shaft 21a penetrating through a steady-rest support body 20 attached to the inside of the first door unit 12 so as to be lifted and lowered. And a steady rest 21 made up of a roller (fitting member) 21b capable of rotating around a vertical support shaft at the upper end of the elevating shaft 21a. A circumferential annular recess 23 is formed at an intermediate height of the elevating shaft body 21a, and the steady rest support body 20 is provided with a locking hole 24 through which the elevating shaft body 21a passes, and in the door lateral movement direction. There are provided an operation plate 25 movably supported in the inner and outer horizontal directions orthogonal to the compression plate spring (elastic body) 26 for urging the operation plate 25 in a direction away from the first door 12 inward. . Thus, as shown in FIGS. 12A and 12C, the inner side of the locking hole 24 of the operation plate 25 is fitted into the recess 23 of the lifting shaft 21a by the urging force of the compression coil spring 26. The steady rest 21 is configured to be held at the upper limit height. The operation plate 25 is provided with a push-in operation portion 25a exposed in a recessed portion 20a formed on the inner surface of the steady rest support body 20, and as shown in FIG. 12B, this push-in operation portion is provided. The operation plate 25 is pushed against the urging force of the compression coil spring 26 by the portion 25a, and the locking hole 24 of the operation plate 25 is positioned concentrically with the elevating shaft 21a, so that the steady rest 21 is caused by its own weight. The lower limit height (the height at which the roller 21b is received by the upper surface of the steady rest support body 20) is lowered.

  Further, each of the steadying units 18a and 18b has a contact surface 27 made of a cushioning material such as rubber at the tip of an extension 20b extending from the steadying tool support body 20 to the outer end side of the first door unit 12. When the first door unit 12 is in the first door unit fixed position, the contact surface 27 of the outer-end steadying unit 18b adjacent to the left side plate 3 comes into contact with the inner side surface of the left side plate 3 It is configured as follows. Since the contact surface 27 provided on the steady-state unit 18a on the inner end side of the first door unit 12 does not function as described above, the steady-state units 18a and 18b need not have the same structure. It may be lost. Further, a pair of parallel projecting plate portions 20c in the door lateral movement direction protrudes upward from the steady rest support body 20 of the steady rest units 18a and 18b. When the first door 12 is viewed from the inside (see FIG. 8B), the parallel projecting plate portion 20c is positioned so as to sandwich the roller 21b from both sides of the door lateral movement direction, and viewed from the door lateral movement direction ( 11B, 12A, and 12B) are configured to be positioned outside the roller 21b with an appropriate gap therebetween.

  As shown in FIG. 11, the cam member 19 is attached to the upper inner corner of the first door 12 so that its upper side is flush with the upper surface of the first door 12. A mounting plate portion 19a that is screwed to the inner side surface of the first door unit 12 is provided, and the upper end surface has the same shape as the grooved cam 17 included in the bearing member 14a on the lower inner end side of the first door unit 12. A grooved cam 28 is formed. That is, the grooved cam 28 has an inner end portion (an inner end of the first door unit 12) that enters the thickness of the first door unit 12 when the first door unit 12 is viewed from above (see FIG. 11A). The outer end of the first door unit 12 is inclined to the outer end of the first door unit 12. It is released towards the side. The mounting plate portion 19a of the cam member 19 is formed with a notch recess 19b into which the parallel projecting plate portion 20c of the steadying unit 18a located immediately below the cam member 19 is fitted.

  Further, as shown in FIG. 3B and FIG. 4B, the cam-attached member 19 is provided with door unit connecting / positioning means 29 for maintaining the state where the second door unit 13 overlaps the outside of the first door unit 12. The clamping tool 30 to be formed is provided so as to project toward the inner end side of the first single door 12. The clamping tool 30 is made of a pair of elastic clamping pieces 31a and 31b in the front-rear direction orthogonal to the door lateral movement direction, and rubber or the like fitted and fixed to the back end between the pair of elastic clamping pieces 31a and 31b. It is comprised from the buffering elastic body 31c. Further, as shown in FIG. 3B, the cam-equipped member 19 includes the first door 12 in the right-side released state in which the second door 13 is overlapped on the outer side of the first door 12 at the fixed position of the first door. A movable stopper 33 is provided which constitutes first door single unit positioning means 32 for positioning the first door single unit at a fixed position. The movable stopper 33 includes a movable piece 34c that is pivotally supported by a vertical support shaft 34b at the front end of a bearing portion 34a that is provided continuously from a location adjacent to the base portion of the clamping tool 30, and a front end of the movable piece 34c. It is constituted by a buffering elastic body 34d such as a locked rubber, and a compression coil spring 34e that biases and holds the movable piece 34c in the acting posture. The movable piece 34c is horizontally swingable within a certain range on the inner side from the action posture that projects obliquely from the support shaft 34b to the inner side of the outer end side of the first door unit 12.

  Next, the detailed structure of the second door unit 13 will be described. As shown in FIGS. 13 and 14, the second door unit 12 has a pair of lower bearing units in the door lateral movement direction at the lower end portion inside thereof. 35a, 35b are attached, and a pair of upper bearing units 36a, 36b in the lateral direction of the door are arranged at the upper end inside the second door unit 12 so as to be located directly above the lower bearing units 35a, 35b. The door unit is mounted at a position adjacent to the outer end side of the second door unit 12 with respect to the upper bearing unit 36b on the outer end side of the second door unit 13 among the upper bearing units 36a and 36b. As shown in FIG. 4B, the second door unit 13 is positioned at a position overlapping the outside of the first door unit 12 at the first door unit lateral movement limit position as shown in FIG. 4B. Unit 2 single unit position Engaged pin 39 constituting the fit means 38 is attached.

  The lower bearing units 35a, 35b have the same structure as each other, and as shown in FIG. 15, in the recess formed in the corner between the lower end surface and the inner side surface of the second door unit 13, The second door unit 13 is fitted in the same state as the lower end surface, and is screwed to the inner surface of the second door unit 13. Each of the lower bearing units 35a and 35b is formed with a rectangular recess 40 having an open lower end and an inner side (a side entering the recess of the second door unit 13). An up-and-down movable body 41 is provided so that it can only move up and down within a certain direction range. The up-and-down movable body 41 is provided with a lower pin hole 42 opened in the vertical direction at the lower end surface thereof, and a screw shaft 43 for adjusting the upper limit of movement of the up-and-down movable body 41. The screw shaft 43 is screwed into an upper end side screw hole 44a of a vertical through-hole 44 provided in the elevating movable body 41, and the upper end of the screw shaft 43 protruding upward from the elevating movable body 40 has a rectangular recess. 40 is in contact with the upper end surface 40a.

  The elevating movable body 41 is fitted into the rectangular recess 40 so that it can only be raised and lowered from the lower side, and the both sides are formed on both inner side surfaces of the adjacent rectangular recess 40. Further, retaining claws 46a and 46b are provided so as to be fitted into the vertical guide recesses 45a and 45b. When the elevating movable body 41 is fitted from below into the rectangular recess 40 before the lower bearing units 35a and 35b are attached to the second door unit 13, the side walls of the rectangular recess 40 are prevented from coming off. While pushing out by 46a and 46b, the claw portions 46a and 46b for retaining are pushed in to a depth where they fit into the guide recesses 45a and 45b.

  The upper bearing units 36a and 36b have basically the same structure, and the second door is disposed in a recess formed in a corner portion between the upper end surface and the inner side surface of the second door unit 13. The unit 13 is fitted to the upper end surface of the unit 13 and is screwed to the inner surface of the second unit unit 13. Hereinafter, although demonstrated based on FIGS. 16-18, these figures have shown the upper side bearing unit 36b attached to the outer end side of the 2nd door simple substance 13. As shown in FIG. In the vicinity of the upper ends of the upper bearing units 36a and 36b, an upper pin hole 47 in the vertical direction with the upper end and the inner side being released is provided. Inside the upper bearing units 36a and 36b, an inner release portion of the upper pin hole 47 is provided. An opening / closing lid 48 for opening and closing 47a and a movable body 49 are provided. The movable body 49 is built in the upper bearing units 36a and 36b so as to be reciprocally movable within a certain range in the lateral direction of the door below the upper pin hole 47. An open / close lid 48 is integrally provided, and the movable body 49 is biased and held by one end of the reciprocating movement range by a compression coil spring 50, so that the open / close lid 48 is an inner release portion of the upper pin hole 47. 47a is closed. As will be described later, since the flange portions 77 are formed at the lower ends of the upper support pins 76 a and 76 b fitted into the upper pin hole 47, the inner surface of the upper pin hole 47 and the opening / closing lid 48. Are formed with recessed grooves 47b and 48b (see FIG. 17B) into which the flange portion 77 is fitted when the upper support pins 76a and 76b are sandwiched between the upper pin hole 47 and the inner surface of the opening / closing lid 48. Has been.

  Further, the movable body 49 includes a protruding operation portion 52 that slightly protrudes outward from a long hole-shaped opening portion 51 that is formed in the front plate portion of the upper bearing units 36a and 36b and that is long in the lateral direction of the door. A recess 52a adjacent to the operation portion 52 is formed, and the protruding operation portion 52 is moved to the outer end side of the second door unit 13 so that a fingertip can be inserted into the recess 52a from the outside of the long hole-shaped opening 51. By performing the pressing operation, the open / close lid 48 that closes the inner release portion 47a of the upper pin hole 47 together with the movable body 49 is laterally moved against the urging force of the compression coil spring 50, so that the upper pin The inner release portion 47a of the hole 47 can be opened. In addition, inside the opening / closing lid 48, when the opening / closing lid 48 closes the inner release portion 47 a of the upper pin hole 47, the cylindrical shape in the vertical direction closed in the cross-sectional shape together with the inner surface of the upper pin hole 47. An arcuate inner surface 48a that forms a space is formed.

  The upper bearing units 36a and 36b are composed of an outer member 53 having an attachment plate portion 53a that is in contact with the inner surface of the second door unit 13 and screwed thereto, and an inner member 54. The inner and outer members 53 and 54 are coupled and integrated with each other in a state in which the movable body 49 having the opening / closing lid 48 and the compression coil spring 50 are sandwiched between the members 53 and 54. In order to reduce or eliminate the number of coupling screws (not shown) for coupling the two to each other, a wide locking claw piece 55 provided continuously from the lower side of the inner member 54 is attached to the outer side as shown in the figure. It is configured to be engaged with a locked step 56 formed on the member 53. Further, the upper bearing units 36a and 36b are provided with an opening 57 for operation at a position adjacent to the side surface opposite to the side adjacent to the compression coil spring 50 in the both sides of the movable body 49 in the lateral movement direction. Yes.

  Further, of the upper bearing units 36a and 36b, as shown in FIG. 13B and FIGS. 15 to 17, the upper bearing unit 36a located on the inner end side of the second door unit 13 and the second door unit 13 An operation through hole 58 communicating with the operation opening 57 is provided between the inner end and the inner end. The operation through-hole 58 may be formed by the through-hole itself provided in the second door unit 13, but in the illustrated embodiment, a rectangular tube shape in which one end is fitted to the operation opening 57. The internal through hole of the member 59 is the operation through hole 58. This rectangular tube-shaped member 59 is a second door in a state in which the uneven portion 59a formed on one side surface of the base end portion of the rectangular tube-shaped member 59 is fitted to the uneven portion formed on the inner side of the mounting plate portion 53a. By fitting the rectangular tube-shaped member 58 into the concave groove formed on the inner surface of the single unit 13 and simultaneously fitting the upper bearing unit 36b into the concave formed in the second door unit 13 and screwing it, The square tubular member 59 is embedded in the second door unit 13 so that it cannot be removed and is flush. The upper bearing unit 36b on the outer end side of the second door unit 13 is obtained by removing the square tubular member 59 from the upper bearing unit 36a on the inner end side.

  As shown in FIG. 19, the fitting member 37 of the door unit connecting and positioning means 29 is parallel to the door lateral movement direction protruding from a mounting seat 60 screwed to the inner surface of the second door unit 13. A plate-like body 62 that is integrally formed at the tip of the plate-like support member 61 and extends to the inner end side of the second door unit 13 along the door lateral movement direction. It is comprised from the cylindrical part 62a of the up-down direction formed in the front-end | tip. Further, the support member 61 is arranged such that the engaged pin 39 of the second door single unit positioning means 38 is positioned on the outer end side of the second door single unit 13 with respect to the columnar portion 62 a of the fitting member 37. It is integrally formed upward from the top. Note that an extension portion 60 a (see FIG. 19B) that overlaps the attachment plate portion 53 a of the adjacent upper bearing unit 36 b is connected to the attachment seat 60 of the fitting member 37, and below this extension portion. A plurality of positioning fitting projections provided in the projection are fitted into large-diameter through holes 53b (see FIG. 16A) provided in the mounting plate 53a of the upper bearing unit 36a, and the mounting seat 60 is screwed. One of the screws is passed through the positioning fitting projection that fits into the large-diameter through-hole 53b, thereby preventing the relative displacement between the upper bearing unit 36b and the fitting member 37. It is configured as follows.

  As shown in FIG. 19, the second door single unit positioning means 38 includes an engaging member 63 with which the engaged pin 39 is engaged. The engaging member 63 abuts the vertical plate portion 11 a and the left side plate 3 on the outward surface of the vertical plate portion 11 a of the L-shaped member 11 that connects the upper second rail 10 and the upper first rail 9. And an inclined guide surface 64 for moving the outer end side of the second door unit 13 obliquely outward of the opening 2 via the engaged pin 39, and the second door unit 13 With the inclined guide surface 64 for preventing lateral movement of the second door unit 13 in the lateral direction of the door through the engaged pin 39 when it overlaps the outside of the first door unit 12. An inclined engagement groove 65 formed between them is provided. As shown in FIG. 20, the engaging member 63 is integrally formed of synthetic resin, and a vertical mounting plate portion 63a screwed to the vertical plate portion 11a of the L-shaped member 11 and the vertical mounting plate portion 63a. The top plate portion 63b connected to the upper end of the mounting plate portion 63a, the side wall portion 63c that connects the vertical mounting plate portion 63a and the top plate portion 63b and contacts the left side plate 3, and the lower side of the top plate portion 63b. The inner surface of the side wall 63c forms the inclined guide surface 64, and the inclined engagement groove 65 is formed between the side wall 63c and the cam groove forming member 63d. ing.

  The lower door side of the second door single unit 13 having the above-described configuration is supported by a lower lateral moving body unit 66 that laterally moves in the lower second rail 8 via a pair of parallel links 67a and 67b in the door lateral movement direction. The upper end side is supported by an upper lateral body unit 68 that laterally moves in the upper second rail 10 via a pair of parallel links 69a and 69b in the door lateral movement direction. As shown in FIG. 21, the lower lateral body unit 66 is a unit in which a pair of lateral bodies 70a and 70b in the door lateral direction are connected and integrated by a connecting member 71, and each lateral body 70a and 70b includes a respective lateral body 70a and 70b. Rollers 72 that are fitted in the groove-shaped rail portions 8b and 8c of the lower second rail 8 and can rotate about the front and rear horizontal axes are concentrically supported on both front and rear sides of both ends in the length direction. Yes. Each of the laterally moving bodies 70a and 70b has a height protruding to the lower side of the lower second rail 8 via the slit 8a of the lower second rail 8, and the laterally moving bodies 70a and 70b The inner ends of the parallel links 67a and 67b are pivotally supported via vertical support shafts 73 on the lower side near the outer ends.

  Accordingly, the parallel links 67a and 67b are supported in a horizontally swingable manner at positions near both ends in the door lateral movement direction of the lower lateral motion unit 66 in a posture extending forward from the lower side of the lower second rail 8. Will be. In addition, prismatic members 74a and 74b located in the lower second rail 8 project from inner end portions of the respective laterally moving bodies 70a and 70b facing each other, and the grooved steel used as the connecting member 71 is projected. Both end portions are externally fitted to the prismatic members 74a and 74b from below, and are screwed to the prismatic members 74a and 74b. Accordingly, the connecting member 71 is in a state of being accommodated in the lower second rail 8.

  The upper lateral body unit 68 has basically the same structure as the lower lateral body unit 66 as shown in FIG. 22 with the same reference numerals as the lower lateral body unit 66. A pair of parallel links 67a and 67b in the door lateral movement direction whose inner ends are supported by the side lateral movement unit 66 by the vertical support shaft 73 are provided with lower support pins 75a and 75b projecting upward on the upper ends of the ends. The pair of parallel links 69a and 69b in the door lateral movement direction whose inner ends are supported by the horizontal motion unit 68 by the vertical support shaft 73 are provided with upper support pins 76a and 76b projecting downward from the lower ends of the tips. A flange portion 77 is integrally formed at the lower ends of the support pins 76a and 76b. Also, the upper and lower parallel links 67a and 69a located on the inner end side of the first door unit 13 extend forward from the lateral moving body units 66 and 68 at an angle of approximately 90 degrees with respect to the parallel links 67a and 69a. Short cam follower arms 78 and 79 are integrally connected to each other, and a cam follower roller 78a is pivotally supported on the upper end of the lower cam follower arm 78 so as to be rotatable around a vertical support shaft. A cam driven roller 79a is pivotally supported on the lower side of the tip of the upper cam driven arm 79 so as to be rotatable around a vertical support shaft. Further, as shown in FIGS. 22C and 22D, the upper side moving body unit 68 includes a first door unit positioning means 32 facing downward from the outer end portion of the side body 70 a located on the inner end side of the second door unit 13. A movable stopper operating projection 80 for operating the movable stopper 33 is provided.

  Each of the upper and lower laterally moving body units 66 and 68 receives the weight of the second single door 13 supported by the parallel links 67a, 67b, 69a, and 69b extending to the front side, and receives the parallel links 67a, 67b, 69a, Since the side with 69b receives the rotational force in the downward direction, the upper and lower laterally movable body units 66 and 68 can be smoothly laterally moved while maintaining the upright posture in which the parallel links 67a, 67b, 69a and 69b extend horizontally. Must do so. For this reason, the groove-shaped rail portions 8b, 8c, 10b, 10c on both the inner and outer sides of the upper and lower second rails 8, 10 that support the laterally moving body units 66, 68 so as to be laterally movable via the rollers 72 are provided on the inner side. The groove-shaped rail portions 8b and 10b are concave curved surfaces in which the upper side of the roller 72 is fitted and press-contacted so that the roller 72 can roll freely, and the outer groove-shaped rail portions 8c and 10c It is said.

  As described above, as shown in FIG. 1A, the second door unit 13 has an inner position (second door unit position) positioned on the lateral movement path in which the first unit 12 moves laterally, 2 to 4, the second door unit 13 is moved between the inner position and the outer position in parallel with the outer position located outside the lateral movement path. A parallel link posture holding mechanism 81 for holding alternatively is provided. This parallel link posture holding mechanism 81 is provided alongside each of the parallel links 67a, 67b, 69a, 69b for supporting the upper and lower laterally moving body units 66, 68 to support both the upper and lower sides of the second door unit 13. It is of the same structure and is for holding each parallel link 67a, 67b, 69a, 69b with elastic force in the lying posture shown in FIG. 1A and the standing posture shown in FIGS.

  The parallel link posture holding mechanism 81 is located inside the vertical support shaft 73 that supports the inner ends of the parallel links 67a, 67b, 69a, and 69b on the lateral motion bodies 70a and 70b of the upper and lower lateral motion unit units 66 and 68, respectively. Although the structure is the same and the structure is the same, in FIG. 23, it is attached to the parallel links 67b and 69a on the outer end side of the second door unit 13 in FIG. The parallel link posture holding mechanism 81 is illustrated. The parallel link posture holding mechanism 81 is incorporated in each laterally moving body 70a, 70b in a laterally long rectangular column space 82 formed along the length direction of the laterally moving bodies 70a, 70b. The shaft 73 is fixed, and supports the switching cam 83, the cam driven locking piece 84, and the cam driven locking piece 84 that rotate around the vertical support shaft 73 integrally with the parallel links 67a, 67b, 69a, 69b. The support member 85, the compression coil spring 86 that urges the cam follower locking piece 84 toward the switching cam 83, and the buffer means 87. The buffer means 87 is composed of a cam follower 88 and a hydraulic damper 89. ing. The switching cam 83 is disposed at one end portion of the horizontally long rectangular column space 82, and the support member is configured to divide the horizontally long rectangular column space 82 from the switching cam 83 to the other end of the horizontally long rectangular column space 82 in the front-rear direction. 85 is arranged in the horizontally long prismatic space 82.

  The switching cam 83 includes a first convex portion 83a that acts on the cam driven locking piece 84 and a second convex portion 83b that acts on the buffering means 86. The cam driven locking piece 84, as shown in FIG. A cam driven convex portion 84a that abuts on the first convex portion 83a of the switching cam 83 protrudes from one end in the lengthwise direction, and has a spring accommodating hole 84b that opens to the other end. Are formed along the length direction. As shown in FIG. 24B, the supporting member 85 that supports the cam driven locking piece 84 includes a supporting groove 85a in which the bottom surface portion 84c of the cam driven locking piece 84 is slidably fitted in the length direction, and a cam. A spring receiving portion 85b that is connected to one end in the longitudinal direction of the support member 85 at right angles so as to face the opening of the spring accommodating hole 84b of the driven locking piece 84, and the supporting groove 85a back to back. In addition, a concave receiving surface 85c having a circular arc cross section formed along the length direction of the support member 85 is provided. One end of the compression coil spring 86 is inserted into the spring housing hole 84 b of the cam follower locking piece 84, and the other end is in pressure contact with the spring receiving portion 85 b of the support member 85. The cam follower 88 of the buffer means 87 is formed with a mountain-shaped cam follower surface 88a that abuts against the second convex portion 83b of the switching cam 83 at one end in the length direction, and the side surface adjacent to the support member 85 is The projecting arc surface 88b fits into the concave receiving surface 85c of the support member 85, and the opposite side is a deviated plane 88c adjacent to the inner side surface of the horizontally long prismatic space 82. The hydraulic damper 89 has a cylindrical shape that fits into the concave receiving surface 85c of the support member 85, and a retractable buffer pin 89a that protrudes from one end of the hydraulic damper 89 contacts the rear end surface of the cam follower 88. The end is received by the end face of the horizontally long rectangular columnar space 82.

  The parallel link posture holding mechanism 81 having the above-described configuration is constructed by assembling each of the laterally moving bodies 70a and 70b so that the respective components are accommodated in the laterally long prismatic space 82 of each of the laterally moving bodies 70a and 70b. Positions of the cam driven locking piece 84, the support member 85, and the buffering means 87 (the cam driven body 88 and the hydraulic damper 89 in series), which are components of the parallel link posture holding mechanism 81, in the horizontally long rectangular column space 82. Is determined by the urging force and the urging reaction force of the compression coil spring 86 and the urging force and the urging reaction force on the cam follower 88 of the hydraulic damper 89, and the support member 85 needs to be fixed at a predetermined position in the horizontally long rectangular columnar space 82. There is no. Further, in order to smoothly slide the cam follower locking piece 84 with respect to the support member 85, the surface of the support groove 85a is a low arc-shaped ridge parallel to its length direction as shown in FIG. 24B. The parts are arranged in parallel.

  According to the parallel link posture holding mechanism 81 configured as described above, when each of the parallel links 67a, 67b, 69a, 69b is in a lying posture, as shown in FIG. The cam driven convex portion 84a of the cam driven locking piece 84 enters the inside of the 83a, and the first convex portion 83a of the switching cam 83 is connected to the cam driven convex portion 84a of the cam driven locking piece 84 and a horizontally long rectangular columnar space. 82, and the rotation of the switching cam 83, that is, the rotation of the parallel links 67a, 67b, 69a, 69b, is prevented, so that each of the parallel links 67a, 67b, 69a, 69b. Is held in a lying posture, that is, a lying posture that extends obliquely forward at a small angle from the vertical support shaft 73 to the side where the right side plate 4 is located, as shown in FIG. 1A. Each parallel Click 67a, 67b, 69a, 69b, are to be laid down in a direction to further approach the upper and lower second rail 8, 10 blocked. At this time, the second convex portion 83 b of the switching cam 83 is in a state where the cam follower 88 of the buffer means 87 is pushed into the backward limit position against the urging force of the hydraulic damper 89.

  When the parallel links 67a, 67b, 69a, 69b are rotated in the standing direction away from the upper and lower second rails 8, 10 with a certain operating force from such a state, the first convex portion 83a of the switching cam 83 is moved. The parallel links 67 a, 67 b, 69 a, and 69 b are moved while the cam driven locking piece 84 is moved backward against the urging force of the compression coil spring 86 via the cam driven projection 84 a of the cam driven locking piece 84. It rotates in the standing direction. When the parallel links 67a, 67b, 69a, 69b reach a standing posture (a posture standing up to about 50 degrees with respect to the upper and lower second rails 8, 10) when the further standing motion is prevented. 23B, the first convex portion 83a of the switching cam 83 is engaged so as to enter the opposite side of the tip of the cam driven convex portion 84a of the cam driven locking piece 84, and this state is a compression coil spring. Since it is held by the urging force 86, each parallel link 67a, 67b, 69a, 69b is held in a standing posture. At this time, since the second convex portion 83b of the switching cam 83 moves away from the cam driven surface 88a of the cam driven body 88 of the buffer means 87, the cam driven body 88 applies the urging force of the hydraulic damper 89 to the buffer pin. It receives from 89a, moves toward the switching cam 83, and stabilizes in a state where the cam driven surface 88a enters the inside of the second convex portion 83b.

  As shown in FIG. 23B, when the parallel links 67a, 67b, 69a, 69b in the standing posture are rotated in the lying down direction with an operation force of a certain level or more, the first convex portion 83a of the switching cam 83 becomes the cam driven locking piece. The cam follower engagement piece 84 moves away from the cam follower convex portion 84 a of 84 and moves toward the switching cam 83 by the biasing force of the compression coil spring 86. As a result, when the parallel links 67a, 67b, 69a, 69b reach the lying posture, the first convex portion 83a of the switching cam 83 is replaced with the cam driven convex portion 84a of the cam driven locking piece 84 as shown in FIG. 23A. Then, the parallel links 67a, 67b, 69a, 69b are held in a lying posture. Thus, when switching the parallel links 67a, 67b, 69a, 69b to the lying down posture, the urging force of the compression coil spring 86 is received from the cam driven locking piece 84, and the parallel links 67a, 67b, 69a, 69b, The single unit 13 vigorously rotates toward the lying posture. The turning force of the parallel links 67a, 67b, 69a, 69b is supplied from the second convex portion 83b of the switching cam 83 via the cam follower 88. Since it acts in the direction in which the buffer pin 89a of the hydraulic damper 89 is pushed in, the speed limited by the hydraulic damper 89 is suppressed, and the second door unit 13 can reach the lying posture without causing an impact.

  As shown in FIG. 1B, the first door single unit positioning means 32 includes a strip plate-like stopper plate 90 which is long in the door lateral movement direction and cooperates with the movable stopper 33. This stopper plate 90 is located on the upper first rail 9 and the upper side at a position adjacent to the side of the first door 12 in the lateral movement direction with respect to the movable stopper 33 of the first door 12 at the fixed position of the first door. Attached to the outward surface of the vertical plate portion 11a of the L-shaped member 11 between the second rail 10 and on the side adjacent to the movable stopper 33 of the first door unit 12 at the first door unit position. The end portion contacts the elastic body 34d at the tip of the movable piece 34c that is biased and held at the protruding position by the compression coil spring 34e for the lateral movement of the first door 12 from the fixed position of the first door. Although the shape is such that it can be blocked by contact, the opposite end is easily ridden by a buffer elastic body 34d at the tip of the movable piece 34c of the first door 12 that moves laterally toward the fixed position of the first door alone. It is inclined so that it can pass through. 13A and 13B, the upper side surfaces of the pair of upper bearing units 36a and 36b on the upper side of the second door unit 13 are pivotally supported by the upper bearing units 36a and 36b. Projections 91a and 91b are provided to restrict the angle of the parallel links 69a and 69b during the standing posture.

  The positional relationship of each part of the sliding door device 1 configured as described above is set so that the sliding door device 1 can be assembled and used in the opening 2 of the storage space as follows. The assembly operation of the sliding door device 1 will be described. First, the lower second moving body unit 66 with the parallel links 67a and 67b assembled as shown in FIG. The parallel links 67a and 67b are inserted from one end in a direction extending to the front side, and the upper lateral body unit 68 with the parallel links 69a and 69b assembled as shown in FIG. The parallel links 69a and 69b are inserted into the upper second rail 10 from one end so as to extend forward. As shown in FIG. 5, the lower second rail 8 integrated with the lower first rail 7 and the upper second rail 10 integrated with the upper first rail 9 are attached to the upper and lower sides of the opening 2 of the storage space. .

  Next, as shown in FIG. 5, the pair of supporting rollers 15a and 15b on the lower end side of the first door 12 are fitted and placed on the lower first rail 7, The single unit 12 is supported by the lower first rail 7. In this state, the first door unit 12 is erected in a vertical posture. As described above, each of the rollers 21b of the pair of steadying units 18a and 18b on the upper side of the door lateral movement direction is pushed in. When the first door 12 is raised to a vertical posture by operating 25a and switching to the lower limit height, the roller 21b is positioned directly below the upper first rail 9 as shown in FIG. Therefore, in such a state, the lifting shafts 21a of the steady rest units 18a and 18b are pushed up to raise the rollers 21b to the upper limit height that fits in the upper first rail 9, and the operation plate 25 Each roller 21b is locked at the upper limit height by the engagement between the locking hole 24 and the recess 23 on the lifting shaft 21a side. At this time, as shown in FIG. 5, the movable stopper 33 on the inner end portion of the first door 12 enters the front open space between the upper first rail 9 and the upper second rail 10. The cushioning elastic body 34d at the tip is in a state of approaching the outward surface of the vertical plate portion 11a of the L-shaped member 11.

  When the first door 12 is attached as described above, as shown in FIG. 25, the lateral moving body units 66 and 68 in the upper and lower second rails 8 and 10 are brought closer to the left side plate 3 side of the opening 2. The first door 12 is attached at an intermediate position on the lateral movement path of the first door 12, away from the left and right side plates 3, 4. On the other hand, each of the parallel links 67a, 67b, 69a, 69b of the upper and lower laterally moving body units 66, 68 to which the second door unit 13 is attached is manually switched to the standing posture, and the standing posture is a parallel link posture holding mechanism. It is held by 81. At this time, the cam follower arms 78 and 79 on the inner end sides of both the upper and lower laterally moving body units 66 and 68 are moved up and down as opposed to the parallel links 67a, 67b, 69a and 69b, as indicated by phantom lines in FIG. The cam follower rollers 78 a and 79 a at the tip end are positioned inside the lateral movement path of the first door unit 12 in a lying posture approaching the second rails 8 and 10. In this state, as shown in FIG. 26, the first door 12 is moved to the vicinity of the center of the lateral movement path, and the parallel links 67b and 69b on the outer end side of the second door 13 are connected to the first door alone. The upper and lower laterally moving body units 66 and 68 are moved so as to be further away from the side 12 toward the right side plate 3.

As shown in FIG. 6, the second door unit 13 extends the lower pin holes 42 of the lower bearing units 35 a and 35 b forward from the lower side of the lower second rail 8 in a standing posture. The second door unit 13 is supported by the lower lateral moving body unit 66 in the lower second rail 8 via the parallel links 67a and 67b by being fitted to the lower support pins 75a and 75b of the parallel links 67a and 67b. Let At this time, as shown in FIG. 15A, the lower support pins 75a and 75b abut on the upper end surface of the lower pin hole 42 at the upper end spherical surface. Rotation operation of the screw shaft 43 provided in the lower bearing units 35a and 35b, and the ascent limit of the movable movable body 41 provided with the lower pin hole 42 with respect to the lower bearing units 35a and 35b (second door unit 13). This is possible by adjusting the height.

  Next, the position of the upper lateral body unit 68 in the upper second rail 10 is adjusted in the lateral motion direction, and the parallel links 69a and 69b in the standing posture extending forward from the lower side of the upper second rail 10 are arranged. The upper support pins 76a and 76b are positioned inside the upper pin holes 47 in the upper bearing units 36a and 36b of the second door unit 13 that is held in a posture slightly tilted outward from the vertical posture. From this state, the second door unit 13 is raised to a vertical posture. At this time, as shown in FIG. 26, the upper bearing unit 36b on the outer end side of the second door unit 13 Since it is in the position away from the first door unit 12 located on the inner side to the right side plate 4 side, the protrusion of the upper bearing unit 36b with the fingertip of the right hand of the operator holding the left and right sides of the second door unit 13 The operation part 52 is operated so as to be pulled toward the outer end side of the second door unit 13 to open the inner release part 47 a of the upper pin hole 47 closed by the opening / closing lid 48.

  On the other hand, the upper bearing unit 36a on the inner end side of the second single door 13 is covered with the first single door 12 located inside the second single door 13 so that the protruding operation portion 52 can be operated. Since this is not possible, the left hand of the operator holding the left and right sides of the second door unit 13 has an appropriate rod-like member such as a screwdriver, and this rod-like member is Inserting into the operation opening 57 of the upper bearing unit 36a through the operation through hole 58 opened at the inner end of the door unit 13 and moving the movable body 49 backward against the urging force of the compression coil spring 50. Thus, in the same manner as when the protruding operation portion 52 is operated, the inner release portion 47a of the upper pin hole 47 closed by the opening / closing lid 48 of the upper bearing unit 36a is opened.

  As described above, in a state where the inner release portion 47a of the upper pin hole 47 of the pair of upper bearing units 36a in the lateral movement direction is opened, the second door unit 13 is raised to the vertical posture, and the upper bearing units 36a and 36b are raised. The upper support pins 76 a and 76 b on the lower ends of the parallel links 69 a and 69 b are fitted into the upper pin holes 47 from the inside of the second door unit 13. Thereafter, the operating force on the movable body 49 of the upper bearing units 36a, 36b is released, and the opening / closing lid 48 of each upper bearing unit 36a, 36b is closed by the urging force of the compression coil spring 50, so that the inner side of the upper pin hole 47 By closing the release portion 47a, the attachment of the second single door unit 13 is completed. The upper support pins 76a and 76b fitted into the upper pin hole 47 are held between the inner peripheral surface of the upper pin hole 47 and the arc-shaped inner surface 48a of the closed opening / closing lid 48, and at the lower end thereof. Since the flange portion 77 fits into the recessed grooves 47b and 48b formed on the inner side of the upper pin hole 47 and the inner side of the opening / closing lid 48, the weight of the attached second door unit 13 is lower. At the same time as being received by the lower lateral body unit 66 through the lower pin hole 42 of the bearing units 35a and 35b, the lower support pins 75a and 75b of the parallel links 67a and 67b, and the parallel links 67a and 67b, the upper bearing Upper support pins 76a and 76b having recessed grooves 47b and 48b of the upper pin holes 47 of the units 36a and 36b and flange portions 77 of the parallel links 69a and 69b, and parallel links 69a and 69. Through, it is received by the upper horizontal element unit 68.

  As described above, on the outside of the first door unit 12 attached in advance, the second door unit 13 is connected to the upper and lower horizontal moving body units 66 and 68 respectively with a pair of parallel links 67a, 67b, Although the second door unit 13 is supported in a vertical posture via 69a and 69b, all the parallel links 67a, 67b, 69a and 69b are brought into a standing posture by the parallel link posture holding mechanism 81 as described above. Since it is held, it can move laterally along the upper and lower second rails 8 and 10 without interfering with the inner first door unit 12. Therefore, from the state shown in FIG. 26, when the opening 2 of the storage space is closed by both the doors 12 and 13, the first door 12 is moved sideways to the first door alone, and the second door 13 is moved. Move to the opposite position on the other side. Immediately before the first door unit 12 reaches the first unit position, the movable stopper 33 of the first unit unit positioning means 32 on the inner end side of the first unit unit 12 is immediately below the upper second rail 10 and is moved to L. Although it passes through the outside of the stopper plate 90 attached to the vertical plate portion 11a of the shape member 11, as described above, the movable stopper 33 swings outward against the urging force of the compression coil spring 34e. While moving, it can smoothly pass the outside of the stopper plate 90, and when the first door unit 12 reaches the first unit position, the movable stopper 33 is moved to the original position by the biasing force of the compression coil spring 34e. The cushioning elastic body 34d at the tip thereof returns to the initial state close to the outward surface of the vertical plate portion 11a of the L-shaped member 11 at a position adjacent to one end of the stopper plate 90. . In other words, the first door unit 12 that has reached the first unit position is positioned at the first unit position by the movable stopper 33 and the stopper plate 90 of the first unit positioning means 32. Become.

  On the other hand, when the second door 13 moves laterally toward the fixed position of the second door 13 on the outside of the first door 12, the upper and lower cam driven arms 78 and 79 on the inner end side of the second door 13 are The cam driven rollers 78a and 79a that are pivotally supported are moved integrally with the second single door 13 at positions close to the inner surface of the first single door 12 and are thus positioned at the fixed position of the first single door. The cam followers of the upper and lower cam follower arms 78 and 79 that have moved along the inner surface of the first door unit 12 immediately before the inner end of the first door unit 12 is separated from the inner end of the first door unit 12. The rollers 78a and 79a enter the groove cams 17 and 28 from the open ends of the groove cam 17 of the bearing member 14a and the groove cam 28 of the cam member 19 on the outer end side of the first door 12 alone. In accordance with the lateral movement of the first door unit 12, both upper and lower cam driven arms 78, 9 is swung in the upright direction via the cam driven rollers 78a and 79a and the grooved cams 17 and 28, and the upper and lower both parallel links 67a and 69a integrated with the upper and lower cam driven arms 78 and 79 are respectively provided. Forcibly switching from the standing posture to the lying posture against the holding force of the parallel link posture holding mechanism 81.

  As is apparent from the above operation, the groove-shaped cam 17 of the bearing member 14a, the groove-shaped cam 28 of the cam-equipped member 19, and both the upper and lower cam driven rollers 78a and 79a are integrated with the upper and lower parallel links 67a and 69a. The upper and lower cam driven arms 78 and 79 constitute an inside / outside position switching means for the second door unit 13, and the inner end of the second door unit 13 is at the first door by the action of the inside / outside position switching unit. When moving away from the inner end of the first door 12 positioned at a single fixed position, the parallel movement of the parallel links 67a, 67b, 69a, 69b from the standing posture to the lying posture is performed. 12 is automatically switched from the outer position of the lateral movement path 12 to the inner position within the lateral movement path of the first single door unit 12. As a result, as shown in FIG. On a straight line It will be closed by the first units alone 12 series the second units alone 13. This state is reliably maintained as a result of each parallel link 67a, 67b, 69a, 69b being held in a lying posture by each parallel link posture holding mechanism 81.

  As described above, the opening 2 of the storage space is closed by the first single door 12 and the second single door 13 in series on a straight line, that is, both the single doors 12 and 13 are in their respective fixed positions. In some cases, the movable stopper operating projection 80 (see FIG. 5) is provided on the upper side moving body unit 68 that supports the second door single body 13 and projects below the outer end portion of the side moving body 70a on the inner end side of the second door single body 13. 22C), the movable stopper 33 on the first door unit 12 side of the first door unit positioning means 32 approaches the first unit unit 12 against the biasing force of the compression coil spring 34e, as shown in FIG. 1B. The tip is displaced to a position where it does not engage with the stopper plate 90. And as shown to FIG. 1A, the cross-sectional shape of the inner end of both the door unit 12 and 13 is defined so that the inner end of the 2nd door unit 13 may overlap with the inner end of the 1st door unit 12. . Further, in the second door single unit 13 at the second door single unit fixed position, the engaged pin 39 of the second door single unit positioning means 38 on the outer end side thereof is disposed directly below the end of the upper second rail 10. The engaging member 63 is adjacent to the starting end of the inclined guide surface 64 (the end opposite to the end on the inclined engaging groove 65 side).

  When the right half of the opening 2 is opened as shown in FIGS. 2 and 3 from the state in which the opening 2 of the storage space is closed with the doors 12 and 13, the second door 13 Are pushed (or pulled) toward the first door unit 12 with an operation force of a certain level or more, so that the grooved cam 17 of the bearing member 14a of the inner / outer position switching means, the grooved cam 28 of the cammed member 19, and The upper and lower cam driven arms 78 and 79, which are provided with the upper and lower cam driven rollers 78a and 79a and integrated with the upper and lower parallel links 67a and 69a, are moved from the outer side of the first door unit 12 to the second door unit position. The second single door 13 moves to the outside of the first single door 12 while moving in parallel from the inner position to the outer position by an operation opposite to that when the single door 13 moves sideways. The second rail up and down on the outside , Along 10 is horizontally moved to the second units alone traverses limit position, as shown in FIG. 3B, it is possible to open the right half of the opening 2 of the storage space. Thus, when the second door unit 13 reaches the second door unit lateral movement limit position, the holding unit of the door unit connection positioning means 29 on the inner end side of the first door unit 12 located at the first unit position of the first unit. The fitting member 37 (the plate-like body 62 and the columnar portion 62a) of the door unit connection positioning means 29 on the outer end side of the second door unit 13 enters between the pair of elastic clamping pieces 31a and 31b constituting the member 30. The fitting member 37 on the second door unit 13 side is gripped with the elastic force by the holding device 30 on the second door unit 13 side in a state where the cylindrical portion 62a is in contact with the buffering elastic body 31c. The single unit 13 is positioned at a second single unit lateral movement limit position that overlaps the outside of the first single unit 12.

  In the above-mentioned right-side released state, the fitting member 37 of the single door connecting and positioning means 29 on the second single door 13 side is at a strength that resists the elastic gripping force of the holding tool 30 on the first single door 12 side. By pulling (or pushing) the door unit 13 to the second door unit fixed position side and moving it sideways, the second unit door 13 is moved to the second unit position in series with the first unit door 12, The opening 2 of the storage space can be closed. However, in the above-described right-side released state, the first door unit 12 in the first door unit fixed position has the tip of the movable stopper 33 (the buffer elastic body 34d) of the first door unit positioning means 32 on the inner end side thereof. Then, it hits the end of the stopper plate 90 on the upper second rail 10 side and cannot move laterally in a direction away from the fixed position of the first door. Therefore, as shown in FIG. 3, both the first door unit 12 and the second door unit 13 that are overlapped with each other in the right-side released state can be laterally moved to the opposite side to be in the left-side released state. Absent.

  That is, when the left side release state shown in FIG. 4B is set, the first door unit 12 is moved to the side of the first door unit from the state shown in FIG. It will move to the limit position. That is, as shown in FIG. 1A, in the state where the opening 2 of the storage space is closed by the both doors 12 and 13, as described above based on FIG. Since the movable stopper 33 of the single door positioning means 32 is switched to a retracted state that does not act on the stopper plate 90 by the movable stopper operating projection 80 on the second single door 13 side, the first single door 12 is moved to the first door. It can be laterally moved from the single fixed position toward the single door single lateral limit position. At this time, even if the movable stopper 33 of the first door single unit positioning means 32 moves away from the movable stopper operation projection 80 on the second door single unit 13 side and is restored by the urging force of the compression coil spring 34e, it remains on the surface of the stopper plate 90. The movable stopper 33 can pass in front of the stopper plate 90 without any problem as the first door 12 moves laterally.

  When the first door 12 is laterally moved from the first door single position to the first door lateral movement limit position, the grooved cam 17 and the cam of the bearing member 14a on the inner end side of the first door 12 The cam driven rollers 78a and 79a of the upper and lower cam driven arms 78 and 79 on the inner end side of the second door unit 13 that have entered the inner ends of the grooved cams 28 of the attached member 19 are the first door unit 12. With the lateral movement of the (grooved cams 17, 28), the first door 12 is moved to a position inside the inner surface, and the upper and lower cam driven arms 78, 79 are switched from the standing posture to the lying posture. By the movement of the cam follower arms 78 and 79 to the lying posture, the second door unit 13 is moved from the inner position to the outer side with the swing of each parallel link 67a, 67b, 69a, 69b from the lying posture to the standing posture. As the result, the first door single unit 12 pushes the second door single unit 13 outward while the second door single unit 13 is forced to move against the holding force of the parallel link posture holding mechanism 81 in parallel with the position. It will move laterally so as to enter the inside of the single body 13. The second door unit 13 translated in parallel to the outer position is held at the outer position by the holding force of the parallel link posture holding mechanism 81 that holds the parallel links 67a, 67b, 69a, 69b in the standing posture. 12 can reach the fixed position of the first door unit without directly interfering with the second door block 13, and the opening 2 of the storage space is left open as shown in FIG. 4.

  As described above, when the first door unit 12 enters the inside of the second door unit 13 at the second unit position, and the second unit unit 13 is translated from the inner position to the outer position, Since the second door single unit 13 receives a force in the direction of pushing toward the right side plate 4 from the first door single unit 12, the engaged pin 39 on the second door single unit 13 side of the second door single unit positioning means 38 is provided. 4 and 19A when the second door unit 13 reaches the outer position in a state where the second door unit 13 moves in parallel to the inclined guide surface 64 of the engaging member 63. As shown in FIG. 3, the engaged pin 39 on the second door single unit 13 side enters the inclined engagement groove 65 of the engagement member 63. Furthermore, when the first door unit 12 that has entered the inside of the second door unit 13 displaced to the outer position reaches the first unit position of the first unit as shown in FIG. The fitting member 37 of the door unit connection positioning means 29 on the second door unit 13 side held at the outside position enters between the pair of elastic clamping pieces 31a and 31b of the holding unit 30 on the side of the single unit 12 unit. Is held elastically.

  Therefore, in the right-side released state of the opening 2 of the storage space shown in FIG. 4, the second door single unit 13 displaced to the outer position at the second door single unit fixed position is moved to the second door single unit positioning means 38 (the engaged pin 39). And the inclined engaging groove 65) of the engaging member 63 is locked in a state where it cannot be laterally moved from the position directly to the opposite side, and the first door unit 12 overlaps the inside of the second door unit 13. At the lateral movement limit position, the door is held in a state where it is connected to the second door unit 13 by the door unit connection positioning means 29 (the holding tool 30 and the fitting member 37). The first and second doors 12 and 13 are in a state in which they cannot be laterally moved together in the opposite direction. When closing the opening 2 of the storage space from the right open state, the outer end of the first door 12 in the state where the outer end protrudes from the inner end of the outer second door 13 is used. When the opening 2 is changed from the closed state to the right-side released state by laterally moving the first single door 12 to the first single door fixed position. Due to the reverse of the operation, the second single door 13 moves in parallel from the outer position to the inner position just before the first single door 12 reaches the first single position. The closed state in which the doors 12 and 13 are aligned in a straight line with the inner end of the second door 13 facing the inner end of the first door 12 that has reached the fixed position of the first door. Will return to.

  The sliding door device according to the present invention is configured such that an arbitrary one of the two door units is laterally moved so as to overlap the other door unit from a state in which the opening of the storage space is closed by the two door units. The left and right halves of the opening can be opened, and when the opening is closed with two single doors, the two single doors are placed in series on a straight line, It can be used as a sliding door device that can be used.

DESCRIPTION OF SYMBOLS 1 Sliding door apparatus 2 Opening part of storage space 3,4 Left and right both-side board 5 Top plate 6 Floor board 7 Lower first rail 8 Lower second rail 9 Upper first rail 10 Upper second rail 11 L-shaped member 12 Single unit 13 Single unit 14a, 14b Bearing members 15a, 15b Supporting rollers 16, 27 Contact surface 17, 28 Grooves 18a, 18b Anti-sway unit 19 Cam member 20 Anti-skid device support body 21 Anti-skid device 21a Elevating shaft body 21b Roller (fitting member)
23 Recessed shaft body recess 24 Locking hole 25 Operation plate 26 Compression coil spring (elastic body)
29 Single unit connection positioning means 30 Holding tool (Single unit connection positioning means)
31a, 31b Elastic clamping piece 32 First door single unit positioning means 33 Movable stopper (first door single unit positioning means)
34d Elastic body for buffering 34e Compression coil spring 35a-36b Bearing unit 37 Fitting member (single door connection positioning means)
38 Second door single unit positioning means 39 Engaged pin (second door single unit positioning means)
DESCRIPTION OF SYMBOLS 41 Elevating movable body 42 Lower pin hole 47 Upper pin hole 48 Opening / closing lid 49 Movable body 50 Compression coil spring 52 Protruding operation part 57 Operation opening part 58 Operation through hole 59 Square cylindrical member 63 Engaging member (second door) Single positioning means)
64 Inclined guide surface 65 Inclined engagement groove 66, 68 Lateral moving body unit 67a, 67b, 69a, 69b Parallel link 70a, 70b Lateral moving body 71 Connecting member 72 Rolling body roller 73 Parallel link shaft support vertical support shaft 75a-76b Parallel Link support pin 77 Flange portion 78, 79 Cam driven arm 78a, 79a Cam driven roller 80 Projection for movable stopper operation 81 Parallel link posture holding mechanism 83 Switching cam 84 Cam driven locking piece 85 Support member 86 Compression coil spring 87 Buffering means 88 Cam follower 89 Hydraulic damper 90 Stopper plate (Single door positioning unit)

The present invention proposes a sliding door device that can solve the above-mentioned conventional problems, and the sliding door device according to the present invention understands the relationship with embodiments described later. For the sake of simplicity, when the reference numerals used in the description of the embodiment are shown in parentheses, the first door unit (12) and the first door unit (12) enter the lateral movement path. A sliding door device (1) that closes the opening (2) by a second door single body (13) in series with the first door single body (12), wherein the second door single body (13) Two sets of upper and lower lateral motion units (66, 68) supported so as to be laterally movable in parallel with the lateral motion path on the inner side of the path, and two sets of upper and lower traversing the upper and lower sides of the lateral motion path, respectively It is supported via a pair of parallel links (67a, 67b, 69a, 69b) in the moving direction, and an inner position located on the lateral movement path and a first position located on the lateral movement path. A parallel link that is supported so as to be able to move back and forth in parallel between the outer position located outside the door unit (12) and that selectively holds the second door unit between the inner position and the outer position by an elastic force. In the sliding door device provided with the posture holding mechanism (81) ,
Inside the lateral movement path, the first door unit (12) is interposed via a pair of supporting rollers (15a, 15b) in the door lateral movement direction pivotally supported on the lower end side of the first door unit (12). The lower first rail (7) that supports the lateral movement freely, the door side movement direction pair of steady rests (21) attached inside the upper end side of the first door unit (12), the lower release A groove-shaped upper first rail (9), which is provided on the lower side of the lower first rail (7), laterally moves the lower lateral body unit (66) inserted from the end of the rail in a constant posture. A rectangular tube-shaped lower second rail (8) having a slit (8a) on the lower side, and a space on the upper side of the upper first rail (9) with a space therebetween. An upper second rail (10) in the form of a square tube having a slit (10a) on the lower side is provided to hold the upper side moving body unit (68) inserted from above in a fixed posture so as to freely move laterally,
The steady rest (21) is configured to be switchable between an ascending limit height fitted to the upper first rail (9) and a descending limit height separated downward from the upper first rail (9),
The lower parallel links (67a, 67b) are provided under the lower lateral motion unit (66) via a support shaft (73) passing through the slit (8a) of the lower second rail (8). A lower support pin (75a, 75b) projecting upward is provided on the upper end of the tip end of the upper parallel rail (69a, 69b) of the upper second rail (10). It is pivotally supported on the lower side of the upper lateral motion unit (68) through a pivot (73) that passes through the slit (10a), and the lower support pin (75a, 75b) is provided with upper support pins (76a, 76b) projecting downward concentrically with
On the lower end side of the second door unit (13), a lower pin hole (42) that is vertically detachable with respect to each of the lower support pins (75a, 75b) is provided. ) On the upper end side of the upper support pins (76a, 76b), the upper support pins (76a, 76b) fitted in the inner and outer horizontal directions orthogonal to the door lateral movement direction. The upper pin hole (47) provided with the open / close door (48) for preventing the escape of the door is provided.

In addition, the parallel link posture holding mechanism is provided in each of a total of four parallel links pivotally supported by the upper and lower horizontal moving body units, and each parallel link posture holding mechanism is incorporated in the horizontal moving body unit, Each parallel link (67a, 67b, 69a, 69b) has a posture when the second door unit (13) is in the inner position and a posture when the second door unit (13) is in the outer position. , It can be configured to be held alternatively. According to this configuration, in the state before the second door unit (13) is attached, the pair of parallel links (69a, 69b) on the upper door lateral movement direction as well as the pair of parallel doors on the lower door lateral movement direction are provided. The links (67a, 67b) are also manually pulled out to the outside (67a, 67b, 69a, 69b), the second door unit (13) is switched to the position when it is in the outer position, and the position is changed. Since the parallel link posture holding mechanism (81) provided in each parallel link (67a, 67b, 69a, 69b) can be held, outside the first door unit (12) attached first, It is possible to easily support the two-piece single unit (13) at the tip of each of the upper and lower parallel links (67a, 67b, 69a, 69b) .This configuration is implemented in combination with the configuration described in the previous paragraph. It is particularly effective.

The upper pin hole (47) provided on the upper end side of the second door unit (13) is open to the upper bearing unit (36a, 36b) attached to the second door unit (13). The open / close door (48) that opens and closes the upper pin hole (47) is formed in the door lateral movement direction so as to open and close the inner release portion (47a) of the upper pin hole (47). It is mounted in the upper bearing unit (36a, 36b) so as to be laterally movable, and is configured to be urged and held in a closed position by an elastic body (50), and also opens and closes against the elastic body (50). An operation unit for opening the door (48) can be provided . According to this configuration, an external force in a direction in which the downward upper support pin fitted into the upper pin hole comes out of the inner release portion of the upper pin hole acts between the upper support pin and the second door alone. Even so, the upper support pin can be securely held in the upper pin hole by the opening and closing door. Specifically, it is desirable to configure as follows.

Further, the upper bearing unit (36b) having the outer end side upper pin hole (47) opposite to the side facing the first door unit (12) has the open / close door (48) as the operation portion. An operating projection (52) is provided for directly operating with a fingertip, and an operating opening (51) is provided for operating the operating projection (52) from the inside of the second door unit (13). I can leave. According to this configuration, when the second door unit is attached, the outer end portion of the second door unit, that is, the outer end portion to which the upper bearing unit having the outer end side upper pin hole is attached is first. As long as the second door unit is positioned so as not to overlap with the single unit, the operation protrusion of the opening and closing door can be inserted through the operation opening with the fingertip inserted inside the second door unit . Operate and open and close the doors directly and easily. Therefore, this configuration can exert its effect by being implemented in combination with the configuration described in the previous paragraph. Specifically, it is desirable that the upper bearing unit on the inner end side and the upper bearing unit on the outer end side are configured in the same structure as in the embodiments described below.

The upper bearing units 36a and 36b have basically the same structure, and the second door is disposed in a recess formed in a corner portion between the upper end surface and the inner side surface of the second door unit 13. The unit 13 is fitted to the upper end surface of the unit 13 and is screwed to the inner surface of the second unit unit 13. Hereinafter, although demonstrated based on FIGS. 16-18, these figures have shown the upper side bearing unit 36b attached to the outer end side of the 2nd door simple substance 13. As shown in FIG. In the vicinity of the upper ends of the upper bearing units 36a and 36b, an upper pin hole 47 in the vertical direction with the upper end and the inner side being released is provided. Inside the upper bearing units 36a and 36b, an inner release portion of the upper pin hole 47 is provided. An opening / closing door 48 for opening and closing 47a and a movable body 49 are provided. The movable body 49 is built in the upper bearing units 36a and 36b so as to be reciprocally movable within a certain range in the lateral direction of the door below the upper pin hole 47. An open / close door 48 is integrally provided, and the movable body 49 is biased and held by one end of the reciprocating movement range by a compression coil spring 50, so that the open / close door 48 is disposed inside the upper pin hole 47. 47a is closed. As will be described later, since the flange portions 77 are formed at the lower ends of the upper support pins 76 a and 76 b fitted into the upper pin hole 47, the inner surface of the upper pin hole 47 and the opening / closing door 48 . Are formed with recessed grooves 47b and 48b (see FIG. 17B) into which the flange portion 77 is fitted when the upper support pins 76a and 76b are sandwiched between the upper pin hole 47 and the inner side surface of the opening / closing door 48 . Has been.

Further, the movable body 49 has an outer opening from the long hole-like opening 51 which is formed in the front plate portion of the upper bearing unit 36a, 36b and which is long in the lateral direction of the door so that the opening / closing door 48 can be directly opened / closed with a fingertip. A projection 52 for operation that slightly protrudes toward the bottom and a recess 52a adjacent to the projection 52 for operation are formed, and a fingertip is inserted into the recess 52a from the outside of the long hole-shaped opening 51 for operation. By pressing the projection 52 toward the outer end of the second single door 13, the movable body 49 and the open / close door 48 that closes the inner opening 47 a of the upper pin hole 47 are used as the biasing force of the compression coil spring 50. The inner release portion 47a of the upper pin hole 47 can be opened by laterally moving against the side. Incidentally, inside the door 48, when the door 48 closes the inner release portion 47a of the upper pin holes 47, with the inner surface of the upper pin hole 47, the cross-section closed vertical cylindrical in shape An arcuate inner surface 48a that forms a space is formed.

The upper bearing units 36a and 36b are composed of an outer member 53 having an attachment plate portion 53a that is in contact with the inner surface of the second door unit 13 and screwed thereto, and an inner member 54. The inner and outer members 53 and 54 are coupled and integrated with each other in a state in which the movable body 49 having the opening / closing door 48 and the compression coil spring 50 are sandwiched between the members 53 and 54. In order to reduce or eliminate the number of coupling screws (not shown) for coupling the two to each other, a wide locking claw piece 55 provided continuously from the lower side of the inner member 54 is attached to the outer side as shown in the figure. It is configured to be engaged with a locked step 56 formed on the member 53. Further, the upper bearing units 36a and 36b are provided with an opening 57 for operation at a position adjacent to the side surface opposite to the side adjacent to the compression coil spring 50 in the both sides of the movable body 49 in the lateral movement direction. Yes.

Next, the position of the upper lateral body unit 68 in the upper second rail 10 is adjusted in the lateral motion direction, and the parallel links 69a and 69b in the standing posture extending forward from the lower side of the upper second rail 10 are arranged. The upper support pins 76a and 76b are positioned inside the upper pin holes 47 in the upper bearing units 36a and 36b of the second door unit 13 that is held in a posture slightly tilted outward from the vertical posture. From this state, the second door unit 13 is raised to a vertical posture. At this time, as shown in FIG. 26, the upper bearing unit 36b on the outer end side of the second door unit 13 Since the first door 12 located on the inner side is away from the right side plate 4, the upper bearing unit 36 b is operated with the fingertips of the right hand of the operator holding the left and right sides of the second door 13. The projecting portion 52 is operated so as to be pulled toward the outer end side of the second door unit 13 to open the inner release portion 47 a of the upper pin hole 47 closed by the opening / closing door 48 .

On the other hand, the upper bearing unit 36a on the inner end side of the second door single unit 13 is covered with the first door single unit 12 located inside the second door single unit 13, and the operation projection 52 can be operated. Since this is not possible, the left hand of the operator holding the left and right sides of the second door unit 13 has an appropriate rod-like member such as a screwdriver, and this rod-like member is Inserting into the operation opening 57 of the upper bearing unit 36a through the operation through hole 58 opened at the inner end of the door unit 13 and moving the movable body 49 backward against the urging force of the compression coil spring 50. Thus, in the same manner as when the operation projection 52 is operated, the inner release portion 47a of the upper pin hole 47 closed by the opening / closing door 48 of the upper bearing unit 36a is opened.

As described above, with the inner release portion 47a of the upper pin hole 47 of the pair of upper bearing units 36a in the lateral movement direction opened, the second door unit 13 is raised to a vertical posture, and the upper bearing units 36a and 36b are raised. The upper support pins 76 a and 76 b on the lower ends of the parallel links 69 a and 69 b are fitted into the upper pin holes 47 from the inside of the second door unit 13. Thereafter, the operating force on the movable body 49 of the upper bearing units 36a, 36b is released, and the open / close door 48 of each upper bearing unit 36a, 36b is closed by the urging force of the compression coil spring 50, so that the inner side of the upper pin hole 47 By closing the release portion 47a, the attachment of the second single door unit 13 is completed. The upper support pins 76a and 76b fitted in the upper pin hole 47 are held between the inner peripheral surface of the upper pin hole 47 and the arc-shaped inner surface 48a of the closed door 48 , and at the lower end thereof. Since the flange portion 77 fits into the recessed grooves 47b and 48b formed on the inner side of the upper pin hole 47 and the inner side of the opening / closing door 48 , the weight of the attached second door unit 13 is lower. At the same time as being received by the lower lateral body unit 66 through the lower pin hole 42 of the bearing units 35a and 35b, the lower support pins 75a and 75b of the parallel links 67a and 67b, and the parallel links 67a and 67b, the upper bearing Upper support pins 76a and 76b having recessed grooves 47b and 48b of the upper pin holes 47 of the units 36a and 36b and flange portions 77 of the parallel links 69a and 69b, and parallel links 69a and 69. Through, it is received by the upper horizontal element unit 68.

DESCRIPTION OF SYMBOLS 1 Sliding door apparatus 2 Opening part of storage space 3,4 Left and right both-side board 5 Top plate 6 Floor board 7 Lower first rail 8 Lower second rail 9 Upper first rail 10 Upper second rail 11 L-shaped member 12 Single unit 13 Single unit 14a, 14b Bearing members 15a, 15b Supporting rollers 16, 27 Contact surface 17, 28 Grooves 18a, 18b Anti-sway unit 19 Cam member 20 Anti-skid device support body 21 Anti-skid device 21a Elevating shaft body 21b Roller (fitting member)
23 Recessed shaft body recess 24 Locking hole 25 Operation plate 26 Compression coil spring (elastic body)
29 Single unit connection positioning means 30 Holding tool (Single unit connection positioning means)
31a, 31b Elastic clamping piece 32 First door single unit positioning means 33 Movable stopper (first door single unit positioning means)
34d Elastic body for buffering 34e Compression coil spring 35a-36b Bearing unit 37 Fitting member (single door connection positioning means)
38 Second door single unit positioning means 39 Engaged pin (second door single unit positioning means)
DESCRIPTION OF SYMBOLS 41 Elevating movable body 42 Lower pin hole 47 Upper pin hole 48 Opening / closing door 49 Movable body 50 Compression coil spring 52 Operation protrusion 57 Operation opening 58 Operation through hole 59 Square tubular member 63 Engaging member (second door) Single positioning means)
64 Inclined guide surface 65 Inclined engagement groove 66, 68 Lateral moving body unit 67a, 67b, 69a, 69b Parallel link 70a, 70b Lateral moving body 71 Connecting member 72 Rolling body roller 73 Parallel link shaft support vertical support shaft 75a-76b Parallel Link support pin 77 Flange portion 78, 79 Cam driven arm 78a, 79a Cam driven roller 80 Projection for movable stopper operation 81 Parallel link posture holding mechanism 83 Switching cam 84 Cam driven locking piece 85 Support member 86 Compression coil spring 87 Buffering means 88 Cam follower 89 Hydraulic damper 90 Stopper plate (Single door positioning unit)

Claims (10)

It is a sliding door device that closes the opening by the first door unit and the second unit unit that enters the lateral movement path of the first unit unit and is in series with the first unit unit. , Two sets of upper and lower laterally moving units that are supported so as to be laterally movable in parallel to the lateral movement path on the inner side of the lateral movement path, and two sets of upper and lower sides crossing the upper and lower sides of the lateral movement path, respectively. It is supported via a pair of directional parallel links, and it is parallel between front and rear between an inner position located on the lateral movement path and an outer position located outside the first door alone located on the lateral movement path. A parallel link posture holding mechanism that is supported movably and holds the second door unit by an elastic force alternatively between the inner position and the outer position, and an inner / outer position switching means for the second door unit are provided. The inside / outside position switching means is a single unit that is in series with each other on the lateral movement path. When the second door unit is relatively moved laterally in the overlapping direction, the second door unit is moved in parallel from the inner position to the outer position, and the overlapping first and second doors overlap. In the sliding door device provided with a cam and a cam driven roller for translating the second door unit at the outer position to the inner position at the end of the stroke when moved laterally in the release direction. ,
On the inner side of the lateral movement path, a lower first rail that supports the first door unit in a laterally movable manner through a pair of support rollers supported in the lateral direction of the door pivotally supported on the lower end side of the first door unit. A pair of steady rests in the lateral direction of the door mounted on the inner side of the upper end of the first door unit, and are provided on the lower side of the lower first rail. Of the lower second rail that is inserted from the end of the rail so as to be able to move laterally in a fixed posture, and a rectangular tube-shaped lower second rail having a slit on the lower side, and the upper first rail A rectangular tube-shaped upper second rail provided with a slit on the lower side, which is provided on the upper side with a space therebetween and holds the upper side moving body unit inserted from the end of the rail so that it can move laterally in a fixed posture. And
The steady rest is configured to be freely switchable between an ascending limit height fitted to the upper first rail and a descending limit height separated downward from the upper first rail,
The lower parallel link is pivotally supported on the lower side of the lower lateral motion unit via a support shaft that passes through the slit of the lower second rail and protrudes upward on the upper end of the tip. A lower support pin is provided, and the upper parallel link is pivotally supported on the lower side of the upper lateral body unit via a pivot that passes through the slit of the upper second rail, and the lower end of the tip thereof. Is provided with an upper support pin protruding downward concentrically with the lower support pin,
On the lower end side of the second door unit, there is provided a lower pin hole that can be fitted and removed in the vertical direction with respect to each of the lower support pins. The sliding door device is provided with an upper pin hole provided with an open / close door that is detachable in an inner / outer horizontal direction perpendicular to the door lateral movement direction and prevents the fitted upper support pin from escaping.   Each of the lower lateral body unit supported by the lower second rail so as to be laterally movable and the upper lateral body unit supported by the upper second rail so as to be laterally movable are both upper and lower second rails. It is comprised of a pair of laterally moving bodies provided with a plurality of rollers for maintaining a fixed posture with respect to the door, and a connecting member that connects these laterally moving bodies in the upper and lower second rails, and is parallel to each laterally moving body. The sliding door device according to claim 1, wherein an inner end of the link is pivotally supported.   The two-position holding means is configured by a total of four parallel link posture holding mechanisms provided corresponding to all four parallel links in both the upper and lower laterally moving body units, and each parallel link posture holding mechanism is Built in the laterally-moving body unit, each parallel link is selectively held in a posture when the second door unit is in the inner position and a posture when the second door unit is in the outer position. A rotating cam that is linked to each parallel link via a support shaft that pivotally supports the parallel link on a laterally movable body unit, and a cam follower supported so as to be movable in an approaching and separating direction with respect to the rotating cam. The sliding door device according to claim 1, further comprising: an elastic body that urges the cam follower in a direction in which the cam follower is pressed against the rotating cam.   The lower second rail is attached to the front side of the floor plate of the storage space that is opened and closed by the sliding door device, and the lower first rail is provided on the outer upper side surface of the lower second rail. The sliding door device according to any one of claims 1 to 3, wherein the sliding door device is formed by a concave groove.   The upper second rail is attached to the lower side of the top plate of the storage space that is opened and closed by the sliding door device, and the upper side of the upper second rail is opened to the lower side of the upper second rail. The L-shaped member which forms a horizontal groove space is integrally connected, and the upper first rail is integrally formed on the lower side of the front side of the L-shaped member. Sliding door device as described in.   The steady rest is composed of a lifting shaft that passes through a steady rest supporting body attached inside the first door unit, and a fitting member attached to the upper end of the lifting shaft. A concave portion is formed at the intermediate height of the lifting shaft body, and the steady rest support body has a locking hole through which the lifting shaft body passes and is movable in the inner and outer horizontal directions perpendicular to the door lateral movement direction. And an elastic body that urges the operation plate in a direction away from the first door alone, and the inner side of the locking hole of the operation plate is moved up and down by the urging force of the elastic body. A push-down operation portion that is configured to be held at the upper limit height by being fitted into the recess of the shaft body, and that is exposed to the inner side of the steady rest support body on the operation plate. Is provided, and the operation plate is moved to the elastic body by the pushing operation portion. By moving against the force and positioning the locking hole of the operation plate concentrically with the elevating shaft body, the elevating shaft body is configured to descend to its lower limit by its own weight, The sliding door apparatus of any one of Claims 1-5.   The upper support pin that protrudes downward from the lower end of the tip of the upper parallel link is provided with a flange portion, and the upper pin hole on the upper end side of the second door unit is horizontally disposed within the upper pin hole. The sliding door device according to any one of claims 1 to 6, wherein a locking groove into which the flange portion is fitted when the upper support pin is fitted is provided.   The upper pin hole provided on the upper end side of the second door unit is formed on the upper bearing unit attached to the second door unit so that the upper end and the inner side are released, and opens and closes the upper pin hole. The open / close door is housed in the upper bearing unit so as to be able to move laterally in the door lateral movement direction so as to open and close the inner release portion of the upper pin hole, and is biased and held in a closed position by a spring. The sliding door device according to any one of claims 1 to 7, wherein an operation portion for performing an opening operation against the spring is provided.   Between the upper bearing unit having the inner end side upper pin hole on the side facing the first door unit and the inner end of the second door unit, the operation unit penetrates in the door lateral movement direction. 9. The sliding door device according to claim 8, wherein a through-hole is formed, and the opening / closing door can be pushed and opened by a rod-like member inserted into the operation through-hole.   In the upper bearing unit having the outer end side upper pin hole opposite to the side facing the first door unit, the operation part provided in the opening and closing door is operated from the inside of the second door unit. The sliding door apparatus of Claim 8 or 9 provided with the opening part for operation.

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