JP5437020B2 - SLIDE DRIVE MECHANISM AND SLIDE DEVICE FOR CHAIR MOVABLE STRUCTURE HAVING THE SAME - Google Patents

Description

  The present invention relates to a slide drive mechanism that slides a moving member along a guide member in conjunction with an operation of an operating means, and a slide device for a movable structure of a chair provided with the slide driving mechanism. More specifically, in the present invention, relative movement (sliding) between the moving side member and the guide side member is possible with respect to the input from the operation means, but movement with respect to the input from the guide side member side is possible. The present invention relates to a slide drive mechanism in which relative movement between a member and a guide side member is prohibited, and a slide device for a movable structure of a chair including the slide drive mechanism.

  As a slide mechanism that enables the seat position of the chair to be adjusted back and forth, a guide rail is provided on the seat receiver, and movement guide means that allows the seat body to slide along the guide rail, and the seat body to move back and forth relative to the seat receiver. There is one provided with a locking means for regulating (Patent Document 1). The locking means is provided on the bottom surface of the cushion support on the seat body side with a plurality of engagement recesses at a predetermined pitch, and the engagement protrusions provided on the seat support side are engaged with the engagement recesses, thereby On the other hand, the seat body is locked.

  When adjusting the position of the seat body, first, operate the lever so that the operating lever protruding to the side of the seat body is lowered, and then pull the engaging protrusion sideways to remove it from the engaging recess. While maintaining the lever operation, push and pull the seat body to move back and forth. And after moving to a desired position, operation of an operation lever is cancelled | released. As a result, the engaging projection rises and engages with the engaging recess, and the seat body is locked to the seat receiver.

JP 2008-49077 A

  However, in the above slide device, in order to adjust the seat position back and forth, it is necessary to separately perform two different operations, that is, the operation of unlocking the seat body and the operation of moving the seat body. Is annoying.

  An object of this invention is to provide the slide drive mechanism with easy operation. Another object of the present invention is to provide a slide device for a movable structure of a chair that is easy to operate by including the slide drive mechanism.

  In order to achieve this object, a slide drive mechanism according to claim 1 includes a linear guide provided on a base, a slider guided by the guide and moved forward or backward relative to the base, A traction member that moves forward or backward relative to the base so as to move the slider forward or backward, an operating means that moves the traction member forward or backward, and unlocking the slider from the neutral position with respect to the slider A connecting means for connecting the traction member to the slider when moving forward or backward by a distance, and a neutral position when the slider is locked to the base against the movement in the forward direction and the traction member moves forward from the neutral position. A forward elastic arm that urges toward the neutral position, and a backward elastic arm that locks the slider against the base against backward movement and urges the slider toward the neutral position when the traction member moves backward from the neutral position. A forward unlocking projection that releases the locking of the slider by hitting the forward elastic arm while the traction member is idle in the forward direction from the neutral position by the unlocking distance, and the traction member is unlocked from the neutral position. A backward lock release convex portion is provided for releasing the locking of the slider by hitting the backward elastic arm while moving backward in the backward direction by a distance.

  Therefore, in a state where the pulling member is not operated by the operating means, the slider is locked to the base by the forward elastic arm and the backward elastic arm, and even if an external force is applied to the slider, the slider is kept against the base. The base cannot be moved forward or backward, and conversely, even if an external force is applied to the base, the base cannot be moved forward or backward relative to the slider. In this state, the traction member is positioned at the neutral position with respect to the slider by the forward elastic arm and the backward elastic arm, and the connecting means does not connect the traction member to the slider.

  If the operating means is operated from this state to move the traction member forward, for example, the traction member first moves idle without moving the slider first. Due to this idle movement, the forward unlocking convex portion hits the forward elastic arm, and the locking of the slider in the forward direction is released (unlocking in the forward direction). When the idle movement distance of the traction member reaches the unlocking distance, the connecting means connects the traction member to the slider, so that the slider is guided and guided by the guide in conjunction with the forward movement of the traction member. At this time, since the moving direction of the slider is the forward direction, the locking force in the backward direction by the backward elastic arm is not exhibited.

  When the operation by the operating means is stopped and the force to move the traction member disappears, the forward elastic arm locks the slider to the base while returning the traction member to the neutral position with respect to the slider by the elastic force. To do. In this state, the backward elastic arm also locks the slider to the base, so that the slider is locked to the base in both the forward direction and the backward direction.

  When the operating means is operated from this state to move the pulling member backward, the slider moves backward in the reverse procedure.

  In addition, the slide drive mechanism according to the first aspect of the invention is not limited to a specific application, and can be used as a drive source of a movable mechanism of industrial equipment or any movable parts / devices. It is preferably used as a drive source for the seat slide mechanism.

  That is, the slide drive mechanism according to claim 1 is disposed between the movable member of the chair and the fixed member that supports the slide member, the base is attached to one of the movable member and the fixed member, and the slider is moved to the movable member. It is preferable that one of the fixed members is attached to the other, and the movable member is slidable by operation of the operation means.

  Here, the movable structure is a seat that moves back and forth with respect to the seat receiving member. The base is attached to either the seat or the seat receiving member, and the slider is attached to either the seat or the seat receiving member. It is preferable that the seat can be slid in the front-rear direction by operation of the attachment and operation means.

  Further, the movable structure is a back gas spring position adjusting mechanism that is disposed between the seat receiving member and the back support rod and that can adjust the inclination by changing the connecting position with respect to the seat receiving member. The end of the back gas spring and the seat receiving member are connected to each other and attached to either the connecting pin or the seat receiving member that moves through the elongated hole of the seat receiving member, and the slider is connected to the connecting pin and the seat receiving member. It is preferable to adjust the inclination of the back gas spring by attaching to either one of them and moving the connecting pin through the long hole by moving the base and the slider relative to each other by operating the operating means.

  The movable structure is a back that can be raised and lowered with respect to the back support rod. The base is attached to either the back or the back support rod, and the slider is attached to either the back or the back support rod. It is preferable that the back can be raised and lowered by the operation of the attaching and operating means.

  The movable structure is an elbow that can be moved up and down along the elbow support member. The base is attached to either the elbow or the elbow support member, and the slider is attached to either the elbow or the elbow support member. It is preferable that the elbow can be raised and lowered by the operation of the attachment and operation means.

  In addition, the movable structure is a lumbar support that can enter and exit in the front-rear direction with respect to the back frame. The base is attached to either the lumbar support or the back frame, and the slider is either the lumbar support or the back frame. It is preferable that the lumbar support can be moved in and out in the front-rear direction by attaching to the other side and operating the operating means.

  The movable structure is a headrest that can be raised and lowered with respect to the back support rod. The base is attached to one of the headrest and the back support rod, and the pulling member is the other of the headrest and the back support rod. It is preferable that the headrest can be moved up and down by operating the operating means.

  In the slide drive mechanism of the present invention, when the traction member is moved by operating the operating means, the movement direction is unlocked (locked) by the movement, and the slider can be moved as it is. Can be unlocked and moved. Therefore, the operation of moving the slider becomes simple, and it is easy to handle and convenient.

  When the operation by the operation means is stopped and the operation force is not input to the pulling member, the pulling member is returned to the neutral position with respect to the slider by the elastic force of the forward elastic arm and the backward elastic arm, and the connection by the connection means Is released, and the forward elastic arm and the backward elastic arm lock the slider to the base. Therefore, it is possible to prevent relative movement between the base and the slider not only when an external force is applied to the slider but also when an external force is applied to the base. In this way, it is automatically and reliably locked.

  Further, since the slide device for a movable structure of a chair according to the present invention uses the slide drive mechanism, the position of the movable member can be adjusted with a simple operation, and the chair can be moved easily and conveniently. A structure can be provided.

It is sectional drawing which shows an example of embodiment of the slide drive mechanism of this invention, and follows the II line | wire of FIG. It is a top view which shows the slide drive mechanism. FIG. 2 is a cross-sectional view of the slide drive mechanism in a state where the slider is moved forward from the state of FIG. 1 and the lock by the forward elastic arm is released. FIG. 4 is a cross-sectional view of the slide drive mechanism in a state where the slider is further moved forward from the state of FIG. 3. FIG. 5 is a cross-sectional view of the slide drive mechanism in a state where the slider is further moved forward and stopped from the state of FIG. 4. It is a top view of the slide drive mechanism of the state of FIG. A base is shown, (A) is sectional drawing which follows the AA line of (B), (B) is sectional drawing which follows the BB line of (A). The slider is shown, (A) is a plan view, and (B) is a sectional view taken along line BB in (A). The pulling member is shown, (A) is a plan view, (B) is a cross-sectional view along the BB line of (A). The forward direction elastic arm and the backward direction elastic arm are shown, (A) is a plan view, and (B) is a side view. An operation means is shown, (A) is a top view, (B) is sectional drawing which follows the BB line of (A). It is explanatory drawing which shows an example of embodiment of the sliding apparatus of the movable structure of the chair of this invention. It is a side view of the chair incorporating the slide device. It is explanatory drawing of the state which shows other embodiment of the sliding apparatus of the movable structure of the chair of this invention, and made the slider retreat most. It is explanatory drawing of the state which has advanced the slider of the slide apparatus most.

  Hereinafter, the configuration of the present invention will be described in detail based on the best mode shown in the drawings. In the present embodiment, a case where the traction member or the like is moved in the front-rear direction will be described as an example. That is, the forward direction is the forward direction, and the backward direction is the backward direction. However, the moving direction is not limited to this, and it may be moved in the left-right direction, the up-down direction, the oblique direction, and the like. If it is a linear movement, its direction and angle are not particularly limited.

  1 to 11 show an embodiment of the slide drive mechanism of the present invention. The slide drive mechanism 1 is mainly composed of a moving side member, a guide side member, and an operation means 2. By moving the movement side member relative to the guide side member by the operation of the operation means 2, for example, a fixed (not shown) The movable member is slid with respect to the member.

  The guide side member includes a base 3 and a linear guide 4 provided on the base 3. In the present embodiment, a guide protrusion 5 and a guide frame 6 as a guide 4 are provided on a plate-like base 3. However, the base 3 is not necessarily limited to a plate-like one, and may have other shapes as long as the guide 4 can be provided. Further, the guide 4 is not limited to the one constituted by the guide protrusion 5 and the guide frame 6, but may be any other one as long as it can guide the moving side member.

  The base 3 is shown in FIG. The guide protrusion 5 is provided in a straight line, and a number of peaks and valleys 5a are continuously formed. The guide frame 6 is composed of three flat plates 6a, 6a, 6b surrounding both sides and the upper side of the movable member, and the lower side of the two side plates 6a so that the operating means 2 can be moved. Is greatly cut out. The side plates 6 a and 6 a are fixed to the base 3. Moreover, the long hole 7 which restrict | limits the moving distance of a movement side member is provided in the top plate 6b. By forming the guide protrusion 5 in a straight line and the guide frame 6 from three flat plates 6a, 6a, 6b, a straight guide 4 for straightly guiding the moving member is formed.

  The moving side member is guided by the guide 4 and moved forward or backward relative to the base 3, and the moving member moves forward or backward relative to the base 3 so as to move the slider 8 forward or backward. A traction member 9 to be moved, a connecting means 11 for connecting the traction member 9 to the slider 8 when the traction member 9 is idled forward or backward from the neutral position 10 with respect to the slider 8 by a lock release distance L, and a slider 8 is locked to the base 3 with respect to the movement in the forward direction, and when the pulling member 9 moves forward from the neutral position 10, the forward elastic arm 12 is urged toward the neutral position 10, and the slider 8 is moved backward. And the backward elastic arm 13 that is urged toward the neutral position 10 when the pulling member 9 moves backward from the neutral position 10 and the pulling member 9 is locked from the neutral position 10. Only release distance L The forward unlocking projection 14 that releases the latching of the slider 8 by hitting the forward elastic arm 12 during the idle movement in the direction, and the pulling member 9 idles in the backward direction from the neutral position 10 by the unlocking distance L. During this time, there is provided a backward lock release convex portion 15 that hits the backward elastic arm 13 to release the locking of the slider 8.

  The slider 8 of this embodiment is shown in FIG. The slider 8 has a frame shape in which the two side plates 8a and 8a are connected to each other by two connecting plates 8b and 8b, and a mounting plate is connected to the central portion of the two side plates 8a and 8a. 8c is fixed. An elongated hole 16 that is elongated in the movement direction is formed at the center in the width direction and in the movement direction of the mounting plate 8c. The length of the long hole 16 is a length obtained by adding twice the unlocking distance L to the diameter of the screw of the connecting bolt 11 described later, and the width is substantially the same as the diameter of the screw of the connecting bolt 11. Screw holes 17 and 17 are provided on both sides of the long hole 16 in the moving direction. Furthermore, a slit 18 for penetrating the operating means 2 is formed below the fixing position of the attachment plate 8c of the two side plates 8a, 8a. However, the configuration of the slider 8 is not limited to this.

  The pulling member 9 of this embodiment is shown in FIG. The pulling member 9 is formed by connecting the upper ends of two side plates 9a, 9a by a single connecting plate 9b, and a top plate 9c is stacked and fixed on the center of the upper surface of the connecting plate 9b in the moving direction. A screw hole 19 into which a connecting bolt as a connecting means 11 is screwed is formed at the center in the width direction and the moving direction of the top plate 9c. This screw hole 19 is also formed continuously in the connecting plate 9b. Also, the upper portions of the front and rear ends of the two side plates 9a, 9a are obliquely cut out so as to align the upper ends with the ends of the top plate 9c to form a hypotenuse 9d. The corners are the forward direction unlocking convex part 14 and the backward direction unlocking convex part 15.

  The forward elastic arm 12 and the backward elastic arm 13 of this embodiment are shown in FIG. In this embodiment, the forward elastic arm 12 and the backward elastic arm 13 are formed by a single leaf spring 20. That is, the forward and backward elastic arms 12 and the backward elastic arms 13 are formed by bending the front and rear of the leaf spring 20 obliquely downward. The angles of the arms 12 and 13 are the same as the angles of the oblique sides 9d and 9d of the side plates 9a and 9a of the pulling member 9. The tips of the arms 12 and 13 are bent upward in accordance with the valley shape of the unevenness 5a of the guide protrusion 5. A slot 21 between the arms 12 and 13 of the leaf spring 20 (hereinafter referred to as the central portion 20a) has the same shape as the slot 16 provided in the mounting plate 8c of the slider 8 when viewed from the plane. And the through-holes 22 and 22 of the same shape seen from the plane with the screw holes 17 and 17 are provided, respectively.

  In this embodiment, the width of the leaf spring 20 and the width of the traction member 9 are the same, and are slightly shorter than the width of the mounting plate 8c of the slider 8, that is, the distance between the side plates 8a and 8a. Further, the length in the front-rear direction of the central portion 20 a of the leaf spring 20 is the same as the length in the front-rear direction of the mounting plate 8 c of the slider 8.

  In this embodiment, the connection means 11 is comprised with the volt | bolt (henceforth the connection bolt 11 suitably). The connecting means 11 passes through the long hole 21 of the leaf spring 20 and the long hole 16 of the mounting plate 8 c of the slider 8 and is screwed into the screw hole 19 of the pulling member 9. However, it is not necessarily limited to the connecting bolt 11, and may be, for example, a convex portion provided in the pulling member 9 and passed through the long hole 16 of the mounting plate 8 c of the slider 8 and the long hole 21 of the leaf spring 20.

  The head of the connecting means 11 is inserted into the long hole 7 of the guide frame 6 of the base 3. Therefore, the range in which the slider 8 and the pulling member 9 can move (forward or reverse) with respect to the base is limited to the range in which the connecting means 11 can move in the long hole 7.

  The shaft portion of the connecting means 11 passes through the long hole 16 of the slider 8 and the long hole 21 of the leaf spring 20. Therefore, the range in which the slider 8 and the leaf spring 20 (the forward elastic arm 12 and the backward elastic arm 13) can move (advance or reverse) relative to the pulling member 9 is within the range where the connecting means 11 is in the long holes 16 and 21. Is limited to the range that can be moved. Since the length of the long holes 16 and 21 is a length obtained by adding twice the unlocking distance L to the diameter of the screw of the connecting bolt 11, the slider 8, the leaf spring 20, and the pulling member 9 are bi-directional from the neutral position 10. Can be moved by an unlock distance L.

  The pulling member 9 is operated by the operating means 2 to move forward or backward. The operation means 2 of this embodiment is shown in FIG. The operation means 2 of this embodiment is an operation lever. The base end 2a of the operating means 2 is rotatably attached to the base 3 using, for example, bolts 23. Further, in the vicinity of the base end 2 a of the operating means 2, a long hole 24 through which the connecting means 11 passes is provided.

  The moving side member and the operating means 2 are assembled as follows. First, the central portion 20a of the leaf spring 20 is overlaid on the mounting plate 8c of the slider 8 and fixed with two bolts 25, 25. Next, the operating means 2 is inserted into the slits 18 and 18 of the side plates 8a and 8a of the slider 8 so as to overlap the operating means 2 below the mounting plate 8c of the slider 8, and each side plate 8a of the mounting plate 8c of the slider 8 is The pulling member 9 is inserted between 8a from below, and the top plate 9c of the pulling member 9 is placed under the operation means 2 so that the positions of the long hole 21, the long hole 16, the long hole 24, and the screw hole 19 are matched. In this state, the connecting bolt 11 is passed through the long hole 21, the long hole 16, and the long hole 24 from above, and the tip thereof is screwed into the screw hole 19 by a predetermined amount. At this time, a gap is provided between the operating means 2 and the mounting plate 8 c of the slider 8 and the top plate 9 c of the pulling member 9 so that the operating means 2 can be moved. In this way, the moving member and the operating means 2 are assembled. By assembling, the forward elastic arm 12 and the backward elastic arm 13 overlap the hypotenuse 9d of the side plate of the traction member 9.

  Then, this assembly is inserted into the guide frame 6 of the guide side member from the side where the side plates 6a, 6a are notched. At this time, the side plate 8a of the slider 8. 8 a and the side plates 9 a and 9 a of the pulling member 9 are arranged between the side plates 6 a and 6 a of the guide frame 6 and the guide 4. After the insertion, the base end 2a of the operating means 2 is attached to the base 3 so as to be rotatable with a bolt 23, whereby the assembly of the slide drive mechanism 1 is completed.

  Next, the operation of the slide drive mechanism 1 will be described.

  As shown in FIGS. 1 and 2, when the pulling member 9 is not operated by the operating means 2, the forward elastic arm 12 and the backward elastic arm 13 are respectively fitted to one of the projections and depressions 5 a of the guide protrusion 5. The slider 8 is locked to the base 3. For this reason, even if an external force is applied to the slider 8 from other than the operating means 2, the slider 8 cannot be moved forward (forward) or backward (returned) with respect to the base 3. The base 3 cannot be moved forward or backward relative to the slider 8 even if acts. In this state, the traction member 9 is positioned at the neutral position 10 with respect to the slider 8 by the forward elastic arm 12 and the backward elastic arm 13, and the connecting means 11 does not connect the traction member 9 to the slider 8. .

  If the operating means 2 is operated from this state and the traction member 9 is moved forward (moved leftward in FIG. 1), for example, the traction member 9 first moves idle without moving the slider 8 forward. Due to this idle movement, the forward unlocking convex portion 14 hits the forward elastic arm 12 and is elastically deformed to be removed from the unevenness 5a of the guide projection 5 (FIG. 3). As a result, the forward movement of the slider 8 is released (unlocking in the forward direction). Then, when the idle movement distance of the pulling member 9 reaches the unlocking distance L, the connecting means 11 connects the pulling member 9 to the slider 8, and thereafter, the slider 8 moves to the guide 4 in conjunction with the advancement of the pulling member 9. Guided and advanced (FIG. 4). At this time, the backward elastic arm 13 is pulled by the slider 8 and slides while moving up and down along the projections and recesses 5a of the guide projection 5, and no locking force is exhibited.

  The movement of the operating means 2 is a rotational movement, while the movement of the slider 8 and the pulling member 9 is a linear movement. Therefore, the positional relationship between the operating means 2, the slider 8, and the pulling member 9 is changed by the rotation of the operating means 2. In this embodiment, the connecting means 11 is passed through the long hole 24 of the operating means 2, and the connecting means 11 moves in the long hole 24 to absorb the change in the positional relationship, and the movement of both is smooth. I have to.

  Then, when the operation by the operation means 2 is stopped and the force to advance the traction member 9 disappears, the forward elastic arm 12 makes the traction member 9 neutral with respect to the slider 8 by the elastic force as shown in FIG. The slider 8 is locked to the base 3 by being fitted into one of the irregularities 5 a of the guide protrusion 5 while returning to the position 10. In this state, the backward elastic arm 13 is also fitted into one of the projections and depressions 5 a of the guide protrusion 5 to lock the slider 8 to the base 3. Therefore, the slider 8 is locked to the base 3 in both the front direction and the rear direction. Since the guide protrusion 5 of the base 3 is continuously formed with a large number of irregularities 5a along its longitudinal direction, the locking position of the slider 8 can be adjusted with a fine pitch.

  When the operating means 2 is operated from this state to move the pulling member 9 backward, the slider 8 moves backward in the reverse procedure.

  In the slide drive mechanism 1 of the present invention, when the pulling member 9 is moved (forward or backward) by operating the operating means 2, the movement direction is unlocked (locked) by the movement, and the slider 8 is moved as it is. Therefore, both unlocking and moving can be performed by one operation. Therefore, the operation of moving the slider 8 becomes simple, and it is easy to handle and convenient.

  When the operation by the operation means 2 is stopped and the operation force is not input to the pulling member 9, the pulling member 9 is moved to the neutral position 10 with respect to the slider 8 by the elastic force of the forward elastic arm 12 and the backward elastic arm 13. Returning and releasing the connection by the connecting means 11, the forward elastic arm 12 and the backward elastic arm 13 fit into one of the projections and recesses 5 a of the guide protrusion 5 to lock the slider 8 to the base 3. Therefore, it is possible to prevent relative movement between the base 3 and the slider 8 even when an external force is applied to the slider 8 and even when an external force is applied to the base 3. Thus, when the operation is stopped, the slider 8 can be automatically and reliably locked.

  Next, a slide device for a movable structure of a chair according to the present invention will be described. In a slide device for a movable structure of a chair (hereinafter simply referred to as a slide device), a slide drive mechanism 1 is disposed between a movable member of the chair and a fixed member that supports the slide drive mechanism 1, and a base 3 is disposed between the movable member and the fixed member. The slider 8 is attached to either one of the movable member and the fixed member, and the movable member can be slid by the operation of the operation means 2.

  An example in which the movable structure is applied to a seat (movable member) that moves back and forth with respect to a seat receiving member (fixed member) of the chair is shown in FIGS. In addition, the same code | symbol is attached | subjected to the member same as the member shown in FIGS. 1-11, and those detailed description is abbreviate | omitted. In this slide device, the base 3 is attached to either the seat 26 or the seat receiving member 27, and the slider 8 is attached to either the seat 26 or the seat receiving member 27. Can be slid in the front-rear direction. In the present embodiment, the base 3 is attached to the seat receiving member 27 and the slider 8 is attached to the seat 26. However, the base 3 may be attached to the seat 26 and the slider 8 may be attached to the seat receiving member 27.

  The side surface of the base 3 is fixed to the beam 28 a of the support frame 28 of the seat receiving member 27. The slider 8 has a front end protruding beyond the base 3, and the upper surface of the protruding portion 8 d is attached to the bottom surface of the outer shell 26 a of the seat 26. Therefore, when the slider 8 moves forward (forward) or reverse (reverse) with respect to the base 3, the seat 26 moves forward or backward with respect to the seat receiving member 27.

  When the operating means 2 (operating lever) extending from the bottom to the side of the seat 26 is operated forward from the solid line position in FIG. 12, the slider 8 moves forward (forward movement) as shown by the phantom line in FIG. The seat 26 can be advanced. Further, when the operation means 2 is operated backward, the slider 8 moves backward (returns) and the seat 26 can be returned to the original position. By moving the seat 26 to a desired position by operating the operation means 2 and locking the slider 8, the position of the seat 26 can be adjusted back and forth.

  Since this slide device adjusts the position of the seat 26 back and forth using the slide drive mechanism 1 described above, both the unlocking and the movement of the seat 26 can be performed by one operation. Further, the seat 26 can be automatically locked by stopping the operation. Therefore, the front and rear adjustment of the position of the seat 26 becomes simple, and it is easy to handle and convenient.

  Further, in a state where no operation is performed, not only when an external force is applied to the seat 26 (slider 8) but also when an external force is applied to the seat receiving member 27 (base 3), the seat 26 and the seat Relative movement with the member 27 can be prevented.

  Moreover, the front-rear position of the seat 26 can be finely adjusted by keeping the pitch of the unevenness 5a of the guide protrusion 5 of the base 3 fine.

  FIG. 14 shows an example of application to a back gas spring position adjustment mechanism that is arranged as a movable structure between a seat receiving member of a chair and a back support rod and that can adjust the inclination by changing the connecting position with respect to the seat receiving member. And shown in FIG. In addition, the same code | symbol is attached | subjected to the member same as the member shown in FIGS. 1-11, and those detailed description is abbreviate | omitted. In this slide device, the base 3 is connected to the end of the back gas spring 29 and the seat receiving member 27, and the connecting pin 30 (movable member) that moves through the elongated hole 27 a of the seat receiving member 27 and the seat receiver Attach to either one of the members 27 (fixed members) and attach the slider 8 to either one of the connecting pin 30 and the seat receiving member 27 and operate the operating means 2 to move the base 3 and the slider 8 relative to each other. The inclination of the back gas spring 29 can be adjusted by moving the connecting pin 30 in the long hole 27a. In the present embodiment, the base 3 is attached to the seat receiving member 27 and the slider 8 is attached to the connecting pin 30. However, the base 3 may be attached to the connecting pin 30 and the slider 8 may be attached to the seat receiving member 27. In the present embodiment, the lower end of the back gas spring 29 is displaced by the slide drive mechanism 1, but the upper end of the back gas spring 29 may be displaced.

  The base 3 is fixed to the upper surface of the seat receiving member 27. The slider 8 is connected to the connecting pin 30 via the link 31. Therefore, when the slider 8 moves forward (forward) or reverse (reverse) with respect to the base 3, the connecting pin 30 moves in the long hole 27 a with respect to the seat receiving member 27.

  In the state shown in FIG. 14, when the operating means 2 (not shown) is operated to move the slider 8 forward (forward), the link 31 pulls up the connecting pin 30 in the long hole 27a as shown in FIG. The lower end of 29 rises and the angle of the back gas spring 29 is tilted. When the operating means 2 is operated to move the slider 8 backward (reverse), the link 31 pushes the connecting pin 30 down in the long hole 27a, so that the lower end of the back gas spring 29 is lowered and the angle of the back gas spring 29 is woken up. Thus, by adjusting the back gas spring 29 to a desired inclination by operating the operation means 2 and locking the slider 8, the strength of the reaction force of the back gas spring 29 can be adjusted.

  Since this slide device uses the above-described slide drive mechanism 1 to adjust the strength of the reaction force of the back gas spring 29, both the unlocking of the tilt of the back gas spring 29 and the tilt adjustment are performed by one operation. Can do. Moreover, the inclination of the back gas spring 29 can be automatically locked by stopping the operation. Therefore, the reaction force adjustment of the back gas spring 29 becomes simple, and it is easy to handle and convenient.

  Further, in a state where no operation is performed, not only when an external force is applied to the connecting pin 30 (slider 8), but also when the external force is applied to the seat receiving member 27 (base 3), Relative movement with the seat receiving member 27 can be prevented.

  Further, the reaction force of the back gas spring 29 can be finely adjusted by keeping the pitch of the projections and depressions 5a of the guide projection 5 of the base 3 fine.

  The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. For example, in the above description, a lever is used as the operation means 2 for moving the pulling member 9, but the present invention is not limited to the lever. For example, a wire or the like can be used as long as the pulling member 9 can be moved forward and backward.

  Further, in the above description, the guide 4 provided on the base 3 is a linear one that guides the moving member straight, but the guide 4 is not limited to a straight one, but a curved shape, for example, an operation A curved guide 4 that guides the moving member in an arc shape around the rotation center of the means 2 may be used.

  In the above description, the forward elastic arm 12 and the backward elastic arm 13 are integrally formed using one leaf spring 20, but the forward elastic arm 12 and the backward elastic arm 13 are not necessarily formed. The forward elastic arm 12 and the backward elastic arm 13 may be formed separately.

  In the above description, the moving side member is placed on the base 3 of the guiding side member, but the vertical relationship may be reversed. In addition, the guide-side member base 3 and the moving-side member are not limited to be arranged vertically, and may be arranged horizontally or obliquely.

  Also. In the above description, the moving side member is guided back and forth with respect to the guiding side member. However, the moving side member may be guided in the left-right direction and the oblique direction, and is not limited to the horizontal direction. You may make it guide to a direction and the diagonal direction.

  Further, the slide drive mechanism 1 of the present invention is not limited to a specific application, and can be used for a slide drive mechanism of industrial equipment or any movable parts / devices. Further, the slide device for the movable structure of the chair incorporating the slide drive mechanism 1 of the present invention is not particularly limited to the above-described slide device for the seat 26 and the mechanism for adjusting the inclination of the back gas spring 29. However, it can be used as a sliding device for all movable structures such as a back raising / lowering mechanism, an elbow raising / lowering mechanism, a lumbar support protruding height adjusting mechanism, and a headrest raising / lowering mechanism.

  That is, the movable structure may be applied to a back that can be raised and lowered with respect to the back support rod of the chair. In this case, the slide device has the base 3 attached to either the back (movable member) or the back support rod (fixed member), and the slider 8 attached to either the back or the back support rod, and operating means. The back can be raised and lowered by the operation of 2.

  Moreover, you may apply to the elbow which can be raised-lowered along the elbow support member of a chair as a movable structure. In this case, the slide device has the base 3 attached to either the elbow (movable member) or the elbow support member (fixed member) and the slider 8 attached to either the elbow or the elbow support member. The elbow can be raised and lowered by the operation of 2.

  Moreover, you may apply to the lumbar support which can freely move in and out with respect to the back frame of a chair as a movable structure. In this case, the slide device has the base 3 attached to one of the lumbar support (movable member) and the back frame (fixed member), and the slider 8 attached to either the lumbar support or the back frame. The lumbar support can be moved in and out in the front-rear direction by the operation 2.

  Moreover, you may apply to the headrest which can raise / lower with respect to a back support rod as a movable structure. In this case, the slide device has the base 3 attached to either the headrest (movable member) or the back support rod (fixed member), and the traction member 9 is attached to either the headrest or the back support rod. The headrest can be raised and lowered by the operation of the means 2.

DESCRIPTION OF SYMBOLS 1 Slide drive mechanism 2 Operating means 3 Base 4 Guide 8 Slider 9 Pulling member 10 Neutral position 11 of the pulling member with respect to the slider Connecting means 12 Forward elastic arm 13 Reverse elastic arm 14 Forward lock release convex part 15 Reverse lock release convex part Part 26 Seat 27 Seat receiving member 27a Long hole 29 of seat receiving member Back gas spring 30 Connecting pin

Claims (8)

  A linear guide provided on the base; a slider guided by the guide to move back and forth relative to the base; and the base to move the slider back and forth. A pulling member that is moved forward or backward, an operation means that moves the pulling member forward or backward, and the pulling member is idled in a forward or backward direction by a unlocking distance from a neutral position with respect to the slider. Then, a connecting means for connecting the traction member to the slider, and the slider is locked to the base against movement in the forward direction and, when the traction member moves forward from the neutral position, toward the neutral position. The forward elastic arm to be urged, and the slider is locked to the base against the backward movement, and urged toward the neutral position when the traction member moves backward from the neutral position. A backward elastic arm, and a forward unlocking convex portion that hits the forward elastic arm and releases the locking of the slider while the pulling member idles in the forward direction from the neutral position by the unlocking distance; A reverse-direction unlocking convex portion for releasing the locking of the slider by hitting the backward-direction elastic arm while the pulling member is idled in the backward direction by the unlocking distance from the neutral position. A slide drive mechanism.   The slide drive mechanism according to claim 1 is disposed between a movable member of a chair and a fixed member that supports the slide member, and the base is attached to one of the movable member and the fixed member, and the slider is A sliding device for a movable structure of a chair, which is attached to one of the movable member and the fixed member, and allows the movable member to slide by operation of the operation means.   The movable structure is a seat that moves back and forth with respect to a seat receiving member, the base is attached to one of the seat and the seat receiving member, and the slider is attached to either the seat or the seat receiving member. 3. A sliding device for a movable structure of a chair according to claim 2, wherein the sliding device is attached to the other, and the seat can be slid in the front-rear direction by operation of the operation means.   The movable structure is a back gas spring position adjusting mechanism that is disposed between a seat receiving member and a back support rod, and is capable of adjusting an inclination by changing a connecting position with respect to the seat receiving member, The end of the back gas spring and the seat receiving member are connected to each other and attached to one of the connecting pin and the seat receiving member that move through the elongated hole of the seat receiving member, and the slider is connected to the seat receiving member. Attaching to the other of the pin and the seat receiving member, adjusting the inclination of the back gas spring by moving the connecting pin in the elongated hole by moving the base and the slider relative to each other by operating the operating means The sliding device for a movable structure of a chair according to claim 2.   The movable structure is a back that can be raised and lowered with respect to a back support rod, and the base is attached to one of the back and the back support rod, and the slider is attached to either the back or the back support rod. The sliding device for a movable structure of a chair according to claim 2, wherein the sliding device is attached to the other, and is capable of raising and lowering the back by operating the operating means.   The movable structure is an elbow that can move up and down along an elbow support member, and the base is attached to one of the elbow and the elbow support member, and the slider is either the elbow or the elbow support member. 3. A sliding device for a movable structure of a chair according to claim 2, wherein the sliding device is attached to the other, and the elbow can be moved up and down by operation of the operation means.   The movable structure is a lumbar support that is movable in and out of the back frame in the front-rear direction, the base is attached to one of the lumbar support and the back frame, and the slider is attached to the lumbar support and the back frame. The sliding device for a movable structure of a chair according to claim 2, wherein the sliding device is attached to either one of the two, and the lumbar support can be moved in and out in the front-rear direction by operation of the operation means.   The movable structure is a headrest that can be moved up and down with respect to a back support rod, the base is attached to one of the headrest and the back support rod, and the pulling member is attached to the headrest and the back support rod. The sliding device for a movable structure of a chair according to claim 2, wherein the sliding device is attached to either one of the two, and the headrest can be moved up and down by operation of the operation means.

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