JP2013224049A - Table device and seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a table to be used at the best height without colliding with a leg or the like of a user when the table is pulled out toward the user.SOLUTION: An upper part 21 of a table 20 is supported by a traveling member 12 which travels along side rails 10. Thus, when a lower part of the table 20, which is stored, is pulled out toward a user to be rotated from downward to upward, a rotation center thereof moves downward along the side rails 10. Even if the position of the upper part 21 of the table 20, which is stored, is higher than a conventional position, the height in a substantially horizontal posture can be the best in use, while contact with a leg of a user can be prevented when the lower part of the table 20 is rotated from downward to upward.

Description

  The present invention relates to a table device used by a seated person who sits on a plurality of seats arranged in front and back, and a seat provided with the table device, and in particular, a seat back portion and a wall surface of a vehicle seat such as an aircraft, a train, a ship, and a bus. The present invention relates to a table device attached to a table and a seat provided with the table device.

  For example, as shown in Patent Documents 1 and 2, a plurality of seats installed in a cabin of an aircraft are installed at predetermined intervals along the longitudinal direction of the aircraft. Many of such vehicle seats are provided with a table in the seat back portion. A passenger seated in the rear seat uses a table supported by the seat back portion of the front seat and uses it as a table for placing beverages or the like.

  The table structure shown in Patent Documents 1 and 2 is basically the same as that shown in FIG. 13A, and one end of the arm 210 is pivotally supported on the side portion of the seat back portion 200. The end is pivotally supported on the base end portion of the table 220, and the rear seat occupant grips the front end 220a side of the table 220 and rotates it toward the front when in use. When storing, the table 220 is rotated upward and pressed against the seat back portion of the front seat, and as shown in Patent Document 2, a stopper provided at the front end of the table 220 on the seat back portion 200. To fix. The stopper is normally a rotating type, and when the gripping portion of the stopper is gripped and rotated, the engaging piece engages with the tip of the table 220 and is fixed at a predetermined position.

  Further, as shown in FIG. 13B, there is a type in which the lower edge 220b rotates from the bottom to the substantially horizontal position with the upper edge 220b of the table 220 as the center.

JP 2010-995 A JP-A-6-305494

  In the case of the one used by rotating from the upper side to the lower side as shown in FIG. 13A, the stopper is rotated and fixed while pressing the table 220 against the seat back portion 200 of the front seat during storage. Particularly in recent years, the seat has been made lighter from the standpoint of improving fuel efficiency, so that the seat back part 200 is also thin. When the seat back part 200 is pressed, a person sitting in the front seat Feels uncomfortable on the back.

  The type shown in FIG. 13 (b) that rotates from the bottom to the top does not give the above-mentioned discomfort, but it rotates around the upper edge of the table. If the height is set to just the right height (at the time of posture), it may come into contact with the user's leg when turning from below to above. However, if the position of the upper edge portion is set high in the seat back portion in order to avoid contact with the legs, the table position during use becomes too high. This is the same even when a table is provided on the wall surface in front of the occupant in the front row of the vehicle.

  The present invention has been made in view of the above, and is a type in which the lower edge of the table at the time of storage protrudes forward and rotates upward from below, but hits a user's leg when pulled out toward the front. A table device that can be used at just the right height without any need, and when the front seat back portion is present in front of the seated person, it is not necessary to strongly press the front seat back portion during storage. It is another object of the present invention to provide a seat including the table device.

  In order to solve the above problems, a table device according to the present invention is a pair of tables that are mounted on a table mounting surface located in front of a seated person along a direction substantially perpendicular to the width direction at a predetermined interval in the width direction. A side rail, a pair of traveling members disposed so as to be able to travel along the rail groove of each side rail, a table in which an upper portion of each side is coupled to each traveling member, and a lower portion of each side rail One end is pivotally supported in the vicinity, the other end is pivotally supported in the middle part of the side portion of the table, an arm that rotates around the one end, an upper portion of the table, and each traveling member is connected to each side rail. An elastic member that urges upward along the rail groove, and the table is in a stowed position along the side rail in a side view, and in use, the urging force of the elastic member is Then, when the lower part of the table is pulled out toward the front, the traveling member and the upper part of the table move downward along the rail grooves while the arm rotates forward, and the table is substantially horizontal. Each of the travel members is structured to be locked in the rail groove at a position where the posture is achieved.

  The table mounting surface is a surface that does not tilt back and forth, and the table device of the present invention is mounted on the wall surface arranged in front of the seated person or the back surface of the seat back portion of the front seat. It is preferable that the elastic member is a coil spring mounted around a support shaft member that pivotally supports the table on the other end of the arm. The rail groove of each side rail has a guide groove portion, a traveling portion having a predetermined width provided in parallel to the guide groove portion, and is wider than the traveling portion at a lower portion of the rail groove, and a step between the traveling portion. The travel member has a guide member that travels in the guide groove portion, and is rotatably supported with respect to the guide member. Is a dimension that fits within the groove width of the running portion of the rail groove, and the wide portion has an engagement piece made of a substantially rectangular plate-like member formed with a dimension that exceeds the groove width of the running portion, While the engagement piece is traveling on the traveling portion, the width detail of the engagement piece is in a posture along the traveling portion, rotates when reaching the direction changing portion, and the notch groove engages with the stepped portion. In the locked state, the notch groove and the stepped portion When the engagement is released, it is preferable that the posture again along the width portion is the traveling unit. The guide member is preferably composed of a roller or a slider, and an elastic member for regulating the mutual positional relationship is preferably disposed between the roller or the slider and the engagement piece.

  Each side rail is screwed to the table mounting surface at one place in the middle between the upper part and the lower part, and each side rail is applied with a force that presses the upper part of each side rail outward. A position where the upper part of each side rail is screwed when an external force is applied that rotates outward about the position where the upper part of the rail is screwed and presses the upper part of each side rail inward. It is preferable that it is the structure rotated inward about this. At the upper part of each side rail, a pressing member is provided that presses the upper part of the table in a direction away from the table mounting surface and restricts the downward movement of the traveling member when the table is stored. It is preferable. It is preferable that the pressing member includes a leaf spring that protrudes from the table mounting surface side at an upper portion of each side rail.

  The table, which is placed in a storage posture and a substantially horizontal posture by moving through the running member along the rail groove of each side rail, is provided at a position where a gap is formed between the table mounting surface and the table. In addition, it is preferable that an article support member for forming an article accommodation pocket is provided closer to the table mounting surface than the table. The article support member preferably includes a belt-like member that is stretched between the side rails. The belt-shaped member has a substantially central portion in the width direction of the upper edge bulged toward the front side, and the upper edge of the table is placed on the surface of the belt-shaped member when the table is operated so as to be stored. It is preferable that the operation is buffered by the frictional force in contact. It is preferable that the belt-shaped member is provided so that the lower edge portion is substantially linear. The table device of the present invention is preferably applied to a vehicle seat provided on a vehicle floor at predetermined intervals.

  Further, the seat of the present invention is characterized in that any one of the table devices is attached to a seat back portion.

  In the table device of the present invention, the upper part of the table is supported by a traveling member that travels along the side rail. Therefore, when the lower part of the table during storage is pulled forward and rotated from below to above, the center of rotation moves downward along the side rail. For this reason, even when the position of the upper part of the table during storage is higher than the conventional position, the height of the substantially horizontal posture in use can be made just high, and the lower part of the table is moved upward from below. When it is rotated, it can be prevented that the user's leg is touched.

  Further, the rail groove has a traveling part and a direction changing part wider than the traveling part, and the notch groove of the engaging piece of the traveling member is engaged with the step part of the traveling part and the direction changing part. In addition, the engagement portion is rotated and released from engagement when the wide portion of the engagement piece contacts the step portion. Thereby, the lock | rock in the substantially horizontal attitude | position of a table and the return operation | movement from the state to a storage position can be performed very easily.

  Further, the side rail is screwed to a table mounting surface such as a seat back portion or a wall surface at one place. For this reason, when a vehicle such as an aircraft receives an impact and a large forward acceleration is applied to the rear seat occupant who is the user of the table, the head contacts the upper portion of the table or side rail. At this time, the side rail receives the impact, and the upper end side rotates outward with the screwing position as the center, so that the impact on the human body is mitigated. On the other hand, when the passenger's head comes into contact with the upper part of the side rail attached to the seat back part of the front seat of the next seat due to impact, the upper side of the side rail is centered on the screwing position. Since it rotates and the lower end side relatively rotates outwardly, the impact received by the human body is also reduced in this case.

  In addition, a pressing member such as a leaf spring that presses the upper portion of the table in a direction away from the seat back portion when the table is stored is provided on the upper portion of each side rail. Movement can be regulated. Thereby, the flapping of the front and rear of the lower part of the table at the time of storage is suppressed. In addition, when the passenger's head abuts against the upper part of the table during storage due to an impact, the upper part of the table moves downward while elastically receiving the force by the pressing member, thereby reducing the impact. Can do.

  Conventionally, the relaxation of the impact received by the rear seat occupant in such a case has been carried out by the back and forth movement of the seat back part, but according to the present invention, the movement of the side rail, the movement of the table, and further by the pressing member The structure that can reduce the impact received by the rear seater by elastic force, especially effective for fixed seats that do not move back and forth in order to save space and secure the leg space of the rear seat seater It is.

  Further, by providing the table at a position where a gap is formed between the seat back portion and the table mounting surface such as the wall surface, an article support member for forming an article accommodation pocket can be provided inside the table. Conventionally, since the article storage pocket is provided below the table, the footrest space for the seated person is limited. However, according to the present invention, the gap between the table and the table mounting surface can be used effectively. More space for footrests than before. Further, when the table is in the storage operation, the structure is brought into contact with the surface of the article support member, so that the storage operation is alleviated by the frictional force and the fingers are prevented from being caught.

FIG. 1 is a perspective view of a seat provided with a table device according to an embodiment of the present invention as viewed from the front side. FIG. 2 is a perspective view of the sheet of FIG. 1 as viewed from the back side. 3A and 3B are perspective views showing the table device according to the embodiment, wherein FIG. 3A shows a state when the table is stored (storage posture), and FIG. 3B shows a state when the table is used (substantially horizontal posture). ). 4A and 4B are plan views showing the table device according to the embodiment, in which FIG. 4A shows a state when the table is stored (storage posture), and FIG. 4B shows a state when the table is used (substantially horizontal posture). ). FIG. 5 is an exploded perspective view showing a mounting relationship between the table device and the back frame according to the embodiment. FIG. 6A is an illustration for explaining the traveling member of the embodiment, and FIG. 6B is a cross-sectional view taken along the line AA of FIG. 6A. Fig.7 (a) is a figure for demonstrating the press member in the table concerning the said embodiment, FIG.7 (b) is a principal part enlarged view of Fig.7 (a). FIG. 8 is a diagram illustrating a change in movement between the storage posture of the table according to the embodiment and the substantially horizontal posture during use. FIGS. 9A to 9F are diagrams for explaining the operation of the traveling member. FIGS. 10A to 10C are views for explaining the impact relaxation action of the side rail. FIG. 11A is a diagram showing the relationship of movement between the pressing member and the protruding edge portion of the upper portion of the table, and FIG. 11B is a diagram for explaining the impact mitigating action due to the movement of the pressing member and the table. It is. FIG. 12 is a diagram for explaining the operation of the article support member (strip member) when the table fluctuates in the storage direction. FIGS. 13A and 13B are views for explaining a table device in a conventional vehicle seat.

  Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view of a seat (aircraft cabin seat) 100 provided with a table device 1 according to an embodiment of the present invention as seen from the front side, and FIG. 2 is a perspective view of the seat of FIG. It is the perspective view seen from the back side. The seat 100 includes two adjacent seats (a window side seat and a passage side seat). As shown in these figures, the table device 1 of the present embodiment is attached to the back surface of each seat back portion 110 of the window side seat and the aisle side seat of the seat 100. This also applies to the case where a table is provided on the wall surface in front of the seated person in the front row seats of the vehicle. Examples of the portion where the table device 1 is provided include the back surface of the seat back portion 110 of the front seat and the wall surface described above. In the present embodiment, a case where the table device 1 is attached to the back surface of the seat back portion 110 will be described as an example. However, since the table apparatus 1 of this embodiment fixes the side rails 10 and 10 to a table attachment surface, the angle with respect to the table attachment surface of the table 20 at the time of use is constant. Therefore, as the table mounting surface, a wall surface whose angle does not fluctuate back and forth, or, in the case of the seat back portion 110, a surface to which the seat back portion 110 does not recline is an attachment target of the table device 1.

  The table device 1 includes a pair of side rails 10 and 10, a table 20, and a pair of arms 30 and 30. The side rails 10 and 10 are attached to the back surface of the seat back part 110 at intervals corresponding to the width of the table 20 along a direction substantially orthogonal to the width direction.

  Each of the side rails 10 and 10 has a rail groove 11 formed in the vertical direction at a position separated by a predetermined distance x1 from the mounting surface 10a to the seat back portion 110 on the opposite surface 10b side (FIG. 6). FIG. 9 (a)). As shown in FIGS. 5, 6, 9, and 10, the rail groove 11 includes a guide groove portion 11 g and a running portion 11 a that is formed closer to the side surface of the table 20 than the guide groove portion 11 g. . Among these, the direction change part 11b wider than the traveling part 11a is formed near the lower part of the traveling part 11a. The direction changing part 11b is notched so as to be deeper toward the mounting surface 10a with the seat back part 110 than the traveling part 11a, and a step part 11c is formed between the traveling part 11a and the direction changing part 11b. ing. Further, a bulging surface 11f bulging outward is formed on the inner surface of the groove facing the step portion 11c.

  A traveling member 12 travels in the rail groove 11. As shown in FIGS. 5 and 6, the traveling member 12 includes a roller 121 as a guide member that travels in a guide groove portion 11 g provided on the back side in the rail groove 11, and a roller 121. It has an engagement piece 122 that is supported to rotate freely and travels on the travel part 11a. A protruding shaft 21a provided on the upper portion 21 of the table 20 described later is inserted into the roller 121 and the engagement piece 122, and is supported rotatably. A coil spring 123 is provided between the roller 121 and the engagement piece 122 as an elastic member for positioning between the two in the rail groove 11. In this embodiment, the guide groove 11g is provided so that the roller 121 travels. However, the guide member may be a slider that slides and travels on the guide groove 11g instead of the roller 121. The engagement piece 122 is made of a substantially rectangular plate-like member, and has a dimension in which the width details are within the groove width of the traveling part 11a, and the wide part exceeds the groove width of the traveling part 11a. A notch groove 122a is formed at the periphery. In the present embodiment, the cutout groove 122a is formed in a substantially triangular shape having a deepest central portion on two short sides located on both sides of the wide portion.

  In the traveling member 12, while the engaging piece 122a travels in the traveling portion 11a, the two long sides 122b on both sides of the width of the engaging piece 122 are in a posture along the traveling portion 11a (FIG. 9 ( a)), the posture changes when the vehicle travels away from the traveling unit 11a and reaches the direction changing unit 11b (see FIGS. 9B to 9F). That is, when the traveling member 12 travels from the traveling portion 11a to the direction changing portion 11b, the restriction on both sides is eliminated, so that the engagement piece 122 can be rotated and provided at the bottom of the direction changing portion 11b. It comes into contact with the stopper 11d. As shown in FIG. 9, the stopper 11 d has a mountain shape in cross section, and is provided obliquely below and forward of the step portion 11 c so that the top portion thereof is substantially opposed to the step portion 11 d described above. The vertical distance y1 between the virtual horizontal plane passing through the top of the stopper 11d and the corner of the stepped portion 11c is slightly shorter than the length y2 of the long side 122b of the engagement piece 122. When the traveling member 12 moves down the traveling portion 11a and reaches the bulging surface 11f, only the long side 122b on one side of the engagement piece 122 (right side in FIG. 9A) reaches the stepped portion 11c. Moves downward while in contact with the inside of the traveling portion 11a. Then, the inclined surface on the left side in FIG. 9B of the lower notch groove 122a comes into contact with the inclined surface on the left side of the top of the stopper 11d. As a result, as shown in FIG. 9B, the engaging piece 122 is inclined slightly to the right along the inclined shape of the stopper 11d.

  As will be described later, the traveling member 12 is abutted against the stopper 11d by an elastic member that urges the table 20 so as to always be in the stowed position, that is, an elastic member that urges the traveling member 12 in a direction in which the traveling member 12 is always moved upward. After touching, it tries to return upward. At this time, since the engagement piece 12 is inclined obliquely to the right in the figure, when it moves upward in that state, as shown in FIG. 9C, the notch groove 122a located on the upper side forms the step portion 11c. I get caught in. When the stepped portion 11c is caught, the inclined surface on the left side of the cutout groove 122a located on the upper side presses the stepped portion 11c from the front side. As a result, the engagement piece 122 becomes unrotatable and is locked and the position of the table 20 is fixed.

  In this state, when the front side of the table 20 is lifted upward, the engagement piece 122 of the traveling member 12 moves downward into the direction changing portion 11b as shown in FIG. 9D. Thereafter, as shown in FIG. 9E, the traveling member 12 attempts to move from the direction changing portion 11b into the traveling portion 11a. At this time, the long side 122b of the engagement piece 122 is stepped. The two long sides 122b on both sides of the width detail are again in a posture along the traveling part 11a and move upward in the traveling part 11a.

  The side rails 10 and 10 are provided at predetermined intervals in the width direction along the vertical direction (longitudinal direction) of the seat back portion 110. The side rails 10 and 10 are respectively provided between an upper portion and a lower portion thereof. In the middle portion, in this embodiment, the screw 10c is used to screw onto the back frame 111 of the seat back portion 110 closer to the lower end than the center position between the upper portion and the lower portion (see FIG. 5). In addition, above the screw 10c, engaging protrusions 10d and 10e protrude in a vertical direction with a predetermined interval (see FIG. 11), and the engaging protrusions 10d and 10e are engaged portions of the back frame 111. It is engaged with 111a, 111b (see FIG. 5).

  Further, as shown in FIG. 5, the lower frame 13 is fixed to the seat back portion 110 so as to be positioned between the lower portions of the side rails 10 and 10. The side rails 10 and 10 are provided with engaging holes 10f in the lower part, and a shaft 14 penetrating in the width direction is inserted into the lower frame 13. Then, each end portion of the shaft 14 is inserted into the engagement hole 10f, whereby the lower frame 13 and the side rails 10 and 10 are engaged via the shaft 14. Of course, each end of the lower frame 13 and each lower portion of the side rails 10 and 10 can be directly engaged without using a shaft.

  Arms 30, 30 are located near end portions 14 a, 14 b (see FIG. 10) that are not inserted through the engagement holes 10 f at the respective end portions of the shaft 14 and are located near the lower portions of the side rails 10, 10. One end 30a, 30a is pivotally supported.

  The table 20 is formed in a substantially rectangular shape in plan view, and the front side has a shape with rounded corners at the time of use. The upper part 21 of each side part of the table 20 (the part that is the upper part in the stowed position, and in the substantially horizontal position during use, the end part located on the back side when viewed from the user, that is, near the seat back part of the front seat The projecting shafts 21a projecting outward are provided at the end portions (the end portions), and the projecting shafts 21a are inserted into and supported by the through holes formed in the center of the roller 121 and the engagement piece 122 of the traveling member 12. Is done.

  The other ends 30b and 30b of the arms 30 and 30 are pivotally supported in the middle part of the side portion of the table 20 (substantially central portion in the depth direction in a substantially horizontal posture during use). Specifically, the support shaft member 31 is inserted in the width direction on the back surface (opposite surface to the use surface) side of the table 20, and the other ends 30 b and 30 b of the arms 30 and 30 are connected to the end portions of the support shaft member 31. It is pivotally supported. A coil spring 32 as an elastic member is provided around the support shaft member 31, and the coil spring 32 causes the table 20 to rail in the direction in which the table 20 is in the storage posture, that is, the upper portion 21 of the table 20. It is urged in the direction of raising along the groove 11 (direction in which the arms 30, 30 are brought closer to the side rails 10, 10).

  A pressing member 15 is provided on the upper side of the side rails 10 and 10. As shown in FIG. 7, the pressing member 15 is composed of a leaf spring that is disposed such that the lower end portion 15a is fixed and the upper end portion 15b protrudes forward. In the storage posture of the table 20, a protruding edge portion 21 b protruding upward is provided on the upper portion 21 of the table 20, and the protruding edge portion 21 b comes into contact with the upper end portion 15 b of the pressing member 15. When the protruding edge portion 21b comes into contact with the upper end portion 15b of the pressing member 15, the protruding edge portion 21b is pressed toward the direction away from the seat back portion 110 (the direction of arrow C in FIG. 7) by the elastic force of the pressing member 15. In the stowed position, even if the lower part of the table 20 flutters due to the shaking of the vehicle or the like, the table 20 opens in a direction that assumes a substantially horizontal position, that is, the traveling member 12 moves to the rail groove. 11 is prevented from moving downward along the line 11. The protruding edge portion 21b is pressed in the direction of arrow C in FIG. 7 by the upper end portion 15b of the pressing member 15, but the opposite surface abuts on the protruding piece 10h provided on the side rail 10 and maintains its position. Has been.

  As described above, each of the side rails 10 and 10 has the rail groove 11 formed at a position separated by a predetermined distance x1 from the attachment surface 10a to the seat back portion 110 toward the opposite surface 10b. Therefore, in the stored posture, the table 20 is disposed at a position along the rail groove 11, and a gap x2 (see FIG. 4) that corresponds to a distance x1 or more is provided between the back surface of the table 20 and the seat back portion 110. As shown in (a), the distance x2 is a gap of the distance x1 or more because the thickness of the table 20 is thin. Further, since the traveling member 12 is connected to the upper portion 21 and moves along the rail groove 11, the table 20 moves between the upper edge portion 22 of the table 20 and the seat back portion 110 at a distance x2. There is a gap. Even when the substantially horizontal posture is used, a gap corresponding to the distance x2 exists between the upper edge portion 22 and the seat back portion 110.

  Therefore, in this embodiment, this gap is used as an article accommodation pocket as shown in FIGS. That is, a belt-like member 40 as an article support member is bridged between the portions of the side rails 10 and 10 near the mounting surfaces 10a and 10a, and the inside of the belt-like member 40 is used as an article accommodation pocket.

  As the belt-like member 40, a cloth having a predetermined width is used, but as shown in FIGS. 4 and 12, the upper edge portion 41 is disposed so as to enclose the rubber member 41a. At this time, the upper edge portion 41 is longer than the distance between the pair of side rails 10 and 10 as the rubber member 41a so that the substantially central portion in the width direction swells to the near side (user side). The Also, the rubber member 42a is disposed so as to be wrapped around the lower edge portion 42, and the rubber member 42a having a length approximately the same as the distance between the pair of side rails 10 and 10 is used.

  The article storage pocket is conventionally provided below the storage position of the table. However, when an arbitrary article is stored in the article storage pocket, the footrest space is reduced accordingly. However, according to the present embodiment, since the table 20 is provided at the same height as the stored position, the footrest space becomes wider than the conventional one.

  Next, the operation of this embodiment will be described. When the table 20 is stored, as shown in FIGS. 3A and 4A, the table 20 is in a state along the rail grooves 11 of the side rails 10, 10, that is, the surface of the seat back portion 110. The posture is almost parallel. In this state, as shown in FIGS. 7A and 7B, the protruding edge portion 21 b provided on the upper portion 21 of the table 20 contacts the upper end portion 15 b of the pressing member 15, and the upper end portion of the pressing member 15. The upper part 21 of the table 20 is always pressed in the direction away from the seat back part 110 by 15b. As a result, it is possible to prevent the lower portion from being opened and fluttering in the storage posture of the table 20 as described above. Further, as shown in FIG. 4A, a gap is formed between the belt-like member 40 located on the inner side of the table 20 and the seat back portion 110, so that the gap shown in FIG. As shown, articles such as magazines can be stored. The lower end of the article is supported by being positioned in a support groove 13a (see FIG. 5) formed in the lower frame 13.

  When the table 20 is used, the user pulls the lower portion of the table 20 forward as shown by the left (passage side) seat in FIG. Thereby, first, since the protruding edge portion 21b rotates downward, it moves below the arcuate tip edge of the upper end portion 15b of the pressing member 15, and the pressing force by the pressing member 15 is released (FIG. 11). (See (a)). Even in this state, the table 20 is urged so as to return to the retracted position by the elastic force of the coil spring 32, so that the user applies a force against the force, as shown in FIG. Then, the lower part of the table 20 is pulled forward (in the direction of arrow A in FIG. 8). Then, in the traveling member 12, the roller 121 rolls along the guide groove portion 11g, and the engagement piece 122 travels on the two long sides on both sides of the width detail as shown in FIG. It becomes a posture along the inner surface of the portion 11a and descends. As shown in FIG. 8, the table 20 is gradually displaced so as to be in a horizontal posture, and accordingly, the pair of arms 30 and 30 are also tilted toward the user side.

  When the engagement piece 122 reaches the direction changing portion 11b from the traveling portion 11a of the rail groove 11, the traveling member 12 contacts the stopper 11d as described above (see FIG. 9B) and is slightly to the right in the drawing. After that, the engaging piece 122 of the traveling member 12 is always urged in the upward direction by the elastic force of the coil spring 32, and therefore is positioned on the upper side as shown in FIG. The notch groove 122a is caught by the step portion 11c and locked. Thereby, as shown in the right side (window side) seat of FIG. 2, FIG.3 (b), and FIG.4 (b), the table 20 becomes a substantially horizontal attitude | position, A drink cup etc. can be mounted on it. That is, the table 20 has a use surface (surface A in FIG. 2) on which a beverage cup or the like is placed as it is, as the surface facing the user in the storage posture is displaced as shown in FIG. Become.

  As described above, according to the present embodiment, the table 20 is rotated upward from below, but the upper portion 21 of the table 20 is opened while moving downward. Even when the position is higher than the conventional position, the height is just right in use.

  When the table 20 is stored, the user lifts the front side of the table 20 (corresponding to the lower part in the storage position) slightly upward. Then, as shown in FIG. 9D, the engagement piece 122 of the traveling member 12 descends into the direction changing portion 11b. When the user releases his / her hand as it is or gently supports his / her hand, the traveling member 12 tends to rise due to the elastic force of the coil spring 32. When rising from the direction changing portion 11b, as shown in FIG. 9E, the long side of the engagement piece 122 contacts the stepped portion 11c, so the engagement piece 122 rotates around the protruding shaft 21a and travels. When entering the portion 11a, as shown in FIG. 9 (f), the two long sides located on both sides of the width detail again take a posture along the inner surface of the traveling portion 11a and rise as it is.

  As the traveling member 12 moves up, the table 20 rotates in the direction in which the lower part approaches the seat back part 110 (in the direction of arrow B in FIG. 8), and returns to the storage position. When the final point is reached, the protruding edge portion 21b provided on the upper portion 21 faces the arcuate tip edge of the upper end portion 15b of the pressing member 15 due to the elastic force of the coil spring 32, as shown in FIGS. It returns until it becomes the state of).

  In this way, until the table 20 is displaced in the direction of arrow B in FIG. 12 until the table 20 is returned from the substantially horizontal posture to the retracted posture, the upper edge portion 22 of the table 20 is moved from the lower edge 42 of the belt-like member 40. Displacement while contacting toward the upper edge 41. As a result, the return operation due to the elastic force of the coil spring 32 is alleviated by the frictional force between the belt-like member 40 and the upper edge portion 22, and the fingers move between the table 20 and the side rail 10 and the table with the sudden return. It can suppress being pinched by the clearance gap between 20 and the arm 30. FIG. In the present embodiment, the lower end edge 41 is substantially linear, and the upper end edge 42 has a substantially central portion that bulges to the near side. Accordingly, when the table 20 starts to return from a substantially horizontal posture, the upper edge 22 of the table 20 moves smoothly without contacting the lower edge 42 of the belt-like member 40, but the contact area becomes closer to the upper edge 41. Therefore, the return operation is gradually attenuated.

  In addition, a large acceleration is applied to the vehicle in the front-rear direction due to shaking or impact, and the user's head may come into contact with the table 20. When such an impact may be applied to an aircraft or the like, each passenger sets the table 20 in the storage position in advance. Therefore, when a person's head suddenly moves forward due to an impact of a predetermined level or more, the head comes into contact with the vicinity of the upper portion 21 of the table 20 as shown in FIG. When the head comes into contact, the protruding edge portion 21b of the table 20 separates from the upper end portion 15b of the pressing member 15, so that the table 20 escapes so that the upper portion 21 is lowered. Thereby, the impact force which the head 20 receives is relieved. Further, since the table 20 is urged in the storing direction by the coil spring 32, the impact force received by the head is relieved by the elastic force.

  Further, when the user's head moves in an oblique direction due to an impact and collides with the side rail 10, in this embodiment, the side rail 10 is fixed only to the portion of the screw 10c. 10, the engagement protrusions 10 d and 10 e are broken and the engagement with the engaged portions 111 a and 111 b of the back frame 111 is released, and as shown in FIGS. 10A and 10B, the screw 10 c is centered. As shown in FIGS. 10A and 10B, the solid line is deformed as indicated by the broken line. Therefore, the impact force received by the head is alleviated by rotating the side rail 10 outward while absorbing energy by breaking the engagement protrusions 10d and 10e.

  On the other hand, for example, when the head of the occupant on the passage side in FIG. 2 suddenly moves to the table 20 used by the occupant on the window side due to an impact, the head is the table 20 used by the occupant on the window side. It collides with the side rail 10 arrange | positioned at the channel | path side which supports. At that time, as shown in FIG. 10 (c), the upper part of the side rail 10 moves inwardly with the screw 10c as a center. Relieve power.

  In the above embodiment, the case where the side rail 10, the table 20, and the like constituting the table device 1 are attached to the seat back portion 110 of the front seat is described as an example. Of course, when the table is provided on the wall in front of the person, the same table device 1 can be attached.

DESCRIPTION OF SYMBOLS 1 Table apparatus 10 Side rail 11 Rail groove 11a Traveling part 11b Direction change part 11c Step part 11d Stopper 11g Guide groove part 12 Running member 121 Roller 122 Engagement piece 122a Notch groove 13 Lower frame 15 Pressing member 20 Table 21 Upper part 30 Arm 40 Strip member 100 sheet 110 seat back part

Claims (14)

A pair of side rails attached to the table mounting surface located in front of the seated person along the direction substantially perpendicular to the width direction at a predetermined interval in the width direction;
A pair of traveling members arranged to be able to travel along the rail grooves of each side rail;
A table to which the upper part of each side is connected to each traveling member;
One end is pivotally supported near the lower part of each side rail, the other end is pivotally supported in the middle part of the side of the table, and an arm that rotates around the one end,
An upper portion of the table and an elastic member that urges the traveling members upward along the rail grooves of the side rails,
In the table, the state along the side rail in a side view is a storage posture,
In use, when the lower part of the table is pulled out against the biasing force of the elastic member, the arm rotates and the arms move along the rail grooves. A table apparatus characterized in that each traveling member is locked in the rail groove at a position where the upper part moves downward and the table is in a substantially horizontal posture.   The table device according to claim 1, wherein the table mounting surface is a surface that does not tilt forward and backward, and is a wall surface disposed in front of the seated person or a back surface of a seat back portion of a front seat.   The table device according to claim 1, wherein the elastic member is a coil spring attached to the other end of the arm around a support shaft member that pivotally supports the table. The rail groove of each side rail has a guide groove portion, a traveling portion having a predetermined width provided in parallel to the guide groove portion, and is wider than the traveling portion at a lower portion of the rail groove, and a step between the traveling portion. And a direction changing part having a part,
The traveling member is
A guide member that travels in the guide groove,
Rotation is supported with respect to the guide member, a notch groove is provided on the periphery, and the width details are within the groove width of the running portion of the rail groove, and the wide portion exceeds the groove width of the running portion. And an engagement piece made of a substantially rectangular plate-like member formed in
While the engagement piece is traveling on the traveling portion, the width detail of the engagement piece is in a posture along the traveling portion, rotates when reaching the direction changing portion, and the notch groove engages with the stepped portion. The table according to any one of claims 1 to 3, wherein when the locking state is established and the engagement between the notch groove and the stepped portion is released, the width detail is again in a posture along the traveling portion. apparatus.   The table according to claim 4, wherein the guide member includes a roller or a slider, and an elastic member that regulates a mutual positional relationship is disposed between the roller or the slider and the engagement piece. apparatus. Each side rail is screwed to the table mounting surface at one place in the middle between the upper part and the lower part,
When a force is applied to push the upper part of each side rail outward, the upper part of each side rail rotates outward about the position where the upper part of each side rail is screwed, and the upper part of each side rail is turned inward. The table device according to any one of claims 1 to 5, wherein when a pressing external force is applied, the table device is configured to rotate inwardly about a position where an upper portion of each side rail is screwed.   At the upper part of each side rail, a pressing member is provided that presses the upper part of the table in a direction away from the table mounting surface and restricts the downward movement of the traveling member when the table is stored. The table apparatus of any one of Claims 1-6.   The table device according to claim 7, wherein the pressing member includes a leaf spring protruding from the table mounting surface side at an upper portion of each side rail.   The table, which is placed in a storage posture and a substantially horizontal posture by moving through the running member along the rail groove of each side rail, is provided at a position where a gap is formed between the table mounting surface and the table. The table apparatus according to claim 1, wherein an article support member that forms an article accommodation pocket is provided closer to the table mounting surface than the table.   The table apparatus according to claim 9, wherein the article support member includes a belt-like member that is spanned between the side rails.   The belt-shaped member has a substantially central portion in the width direction of the upper edge bulged toward the front side, and the upper edge of the table is placed on the surface of the belt-shaped member when the table is operated so as to be stored. The table apparatus according to claim 10, wherein the operation is buffered by the frictional force.   The table apparatus according to claim 11, wherein the belt-shaped member is provided so that a lower edge portion is substantially linear.   The table device according to any one of claims 1 to 12, wherein the seat is a vehicle seat provided on a vehicle floor at predetermined intervals.   The sheet | seat with which the table apparatus of any one of Claims 1-13 is attached to the seat back part.

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