JP6342162B2 - Vehicle table - Google Patents

Description

  The present invention relates to a vehicle table. More specifically, the present invention relates to a vehicle table provided for a seated person of a vehicle seat.

  2. Description of the Related Art Conventionally, a technique in which a table is provided in a vehicle seat so that it can be taken in and out is known (Patent Document 1). The table is provided so that it can be taken in and out of one of the armrests provided on both sides of the vehicle seat. When the table is not in use, the table is stored in a storage space in the one armrest. It has become. From the state in which the table is stored in the storage space, the table is placed in the storage space by placing a hand in a hook hole formed in a part of the table in the storage space. Can be easily pulled out of the storage space.

JP2011-217845A

  However, in the above prior art, a hand must be put in the storage space in order to pull out the table from the storage space, and the operability is poor. The present invention has been created as a solution to the above-described problems, and the problem to be solved by the present invention is to achieve both table storage performance and unfolding operability.

In order to solve the above problems, the vehicle table of the present invention takes the following means.
1st invention is a table for vehicles, Comprising: It has the table main body used as an object loading, and the table moving apparatus which connects a table main body with a base so that expansion | deployment accommodation is possible. The table moving device uses a part of the table main body as a handle portion, and the table main body is stored between the state where the table main body is housed in the base body and the handle portion is retracted, and the table main body is pulled out from the main body. It is configured to be deployed and stored. Further, the vehicle table includes a switching device capable of switching between the stored state and a partially protruded state in which the handle portion protrudes outside the storage body by an operation performed on the table body from the outside of the storage body. .

  According to the first aspect of the present invention, the switching device allows the table body to be housed in a compact manner up to the handle portion inside the storage body, and a partial protrusion that allows the unfolding operation to protrude the handle portion outside the storage body. It is possible to switch to the state. These switching operations can be easily performed by operations performed from the outside of the storage body. Therefore, it is possible to improve the deployability of the table body while improving the storage property of the table body.

  The second invention is the following configuration in the first invention described above. The table main body is configured to be housed inside the housing body in an inclined state by rotation in a diagonally downward direction. The switching device is provided on the base and is in a recessed state in which the table body can be received to the stored state by pushing the table body in the storing direction, and the table body can be pushed out to the partially protruding state by pressing again. It is an alternate operation type switch structure that is in a convex state.

  According to the second aspect of the present invention, the table body of the type stored in the obliquely descending manner is appropriately switched between the storage state and the partially protruding state by the alternate operation type simple structure switching device. , Each state can be stably held. That is, the table body can be stably held in the housed state and the partially protruded state by the gravity action in which the table body is housed obliquely downward. In addition, since the pushing direction of the table body by the switching device is oblique, the table body can be pushed out from the stowed state to the partially protruding state with a relatively light force, and the repulsive force of the switching device is set to be relatively weak can do. Accordingly, the force required to push the table body from the partially protruding state to the stored state can be made relatively light, and the storing operation can be further simplified.

  The third invention is the following configuration in the first or second invention described above. The table body has a structure in which one end is connected to the table moving device and is supported in a cantilevered manner, and the switching device is applied to the other end from the lower side when in the stowed state, so that both ends are supported with respect to the base. It is the structure supported by.

  According to the third aspect of the invention, the table body can be supported at both ends by the switching device when the table body is stored, and the both ends are supported, and the table body is less bent by its own weight by using the configuration of the switching device. Can be supported in the state.

FIG. 3 is a perspective view of the entire sheet showing a storage state of the table according to the first embodiment. It is a perspective view which shows the state which pulled out the table main body to the expansion | deployment position. It is a perspective view which shows the state which dropped the table main body into the use position. It is a perspective view which shows the state which extended the table main body. It is a disassembled perspective view of a table moving apparatus. It is a disassembled perspective view of the principal part of a table moving apparatus. It is a disassembled perspective view of the structure part which connects a table main body and a rotation arm. It is a top view of a table moving apparatus. It is a side view of a table moving apparatus. It is a front view of a table moving apparatus. It is the perspective view which looked at the table moving apparatus from the seat front inner side. It is the perspective view which looked at the table moving apparatus from the sheet | seat back outer side. It is a top view of the table moving apparatus which shows the state which unfolded the table main body. It is the XIV-XIV sectional view taken on the line of FIG. It is the XV-XV sectional view taken on the line of FIG. It is the XVI-XVI sectional view taken on the line of FIG. It is the XVII-XVII sectional view taken on the line of FIG. It is the XVIII-XVIII sectional view taken on the line of FIG. It is the XIX-XIX sectional view taken on the line of FIG. It is a disassembled perspective view of a slide mechanism. It is a top view of a slide mechanism. It is the XXII-XXII sectional view taken on the line of FIG. It is the XXIII-XXIII sectional view taken on the line of FIG. It is the XXIV-XXIV sectional view taken on the line of FIG. It is a disassembled perspective view of a table main body. It is a disassembled perspective view of a rotation arm. It is a side view which shows rotation operation | movement with respect to the rotation arm of a table main body. It is the XXVIII-XXVIII sectional view taken on the line of FIG. It is a top view which shows the guide structure of a guide plate. It is sectional drawing which shows the lock structure of a lock plate. It is a perspective view which shows the state by which the table main body was switched to the partial protrusion state by push operation. It is a schematic diagram which shows a mode that a table main body is switched to an accommodation state by push operation. It is a schematic diagram which shows a mode that a table main body is switched to a partially protruding state by push operation. It is a disassembled perspective view of a switching device. It is the disassembled perspective view seen from the other side. It is a perspective view which shows the concave state of a switching apparatus. It is a perspective view which shows the push operation state of the switching apparatus. It is a perspective view which shows the convex state of a switching apparatus. It is a schematic diagram which shows a mode that a switching apparatus is switched to a concave state by push operation. It is a schematic diagram which shows a mode that a switching apparatus is switched to a convex state by push operation. It is a figure which shows schematic structure of the table of another Example, (a) The accommodation state of a table main body, (b) The use state of a table main body.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the sheet 1 to which the table Ta according to the first embodiment is applied will be described with reference to FIGS. As shown in FIG. 1, the seat 1 of the present embodiment is configured as a seat for one person to be mounted on a railway vehicle. The seat 1 includes a seat back 2 that serves as a backrest for a seated person, a seat cushion 3 that serves as a seating portion, and a support base 4 that has an armrest 4A that serves as an armrest on the upper surface.

  The support base 4 is provided on both the left and right sides of the seat cushion 3 and is formed in a vertically long box shape projecting to a position higher than the seat cushion 3, and integrated with each side portion of the seat cushion 3. Are connected to each other. On the upper surface of each of the support bases 4, a cushion material is provided, and an armrest 4 </ b> A that can support both elbows of the seated person with appropriate softness is formed. Of the support bases 4, the seat occupant uses the front pedestal in a timely manner to the front side of the support base 4 shown on the right side as viewed from the seated person. The table Ta which can be accommodated is stored in a folded state.

  As shown in FIG. 5, the table Ta includes a table main body 5 that can be used as an object table, a table moving device 10 that connects the table main body 5 to a state in which the table main body 5 is unfolded and stored in the support base 4, And a switching device 20 that can be switched between a state in which it is completely housed in the support base 4 and a state in which a part (the handle portion 5D) protrudes to the outside of the support base 4 by a push operation. ing. Here, the support 4 corresponds to the “base” and “housing body” of the present invention.

  As shown in FIG. 1, when the table body 5 is not in use, the table body 5 is placed in a state of being elongated in the longitudinal direction of the seat inside the support base 4 and folded in two. ing. Specifically, the table main body 5 is stored in a state of being inclined obliquely downward and outward in the above-described storage state, and is flush with the slit 4 </ b> B opening in the side surface inside the seat of the support base 4. It is held as a state facing the shape.

  As shown in FIGS. 31 and 33, the table main body 5 pushes the lateral side portion (the handle portion 5D) on the front end side facing the inside of the slit 4B into the slit 4B, as shown in FIGS. Is operated so that the pushed-in side portion (the handle portion 5D) protrudes to the outside of the slit 4B by the switching device 20 having an alternate operation type switch structure provided inside the support base 4. It is switched to a state where it is pushed back and exposed to the outside (partially protruding state) (see FIG. 38). Then, as shown in FIG. 2, the table main body 5 is operated so that the seated person grasps the handle portion 5D and pulls it forward inward of the seat as shown in FIG. 4 is pulled out to be deployed to a position on the front side of the seated person.

  Specifically, the table body 5 is pulled out from the inside of the support base 4 to draw an obliquely upward arc toward the front inside the seat by the above-described pull-in operation, and is laterally directed to the position on the front side of the seated person. It is designed to be deployed in a tilted state. And the said table main body 5 is dropped to the use position of the horizontal attitude | position shown in FIG. 3 by dead weight by pulling out to the position where said expansion | deployment operation is latched.

  As a result of the above-described depression, the tip of the table body 5 is placed on a part of the support 4 on the left side (right side as viewed from the seated person) as shown in the drawing, It will be in the state hold | maintained at the use position of the horizontal attitude | position supported by the support stand 4. FIG. As a result of this depression, the table body 5 is in a state in which the storage rotation toward the inside of the support base 4 is locked, and the upper table piece 5A folded in half can be used as a storage for small items. It becomes a state.

  Further, the table main body 5 is operated as shown in FIG. 4 by opening the folded upper table piece 5A from the lower table piece 5B to the front side from the use position shown in FIG. As shown, the two table pieces 5A and 5B can be developed in a state where they are spread out in the same plane in the front-rear direction. By unfolding in this way, the table main body 5 is in a state in which the table pieces 5A and 5B that are spread out in a flush manner can be used widely as small items.

  The table main body 5 can be adjusted in the front-rear direction when the seated person pushes and pulls the table main body 5 back and forth in the horizontal position. . The adjustment range of the use position of the table main body 5 is a certain range on the front side from the position where the table main body 5 is pulled out from the storage position in FIG. 1 to the deployed position in FIG. 2 and dropped into the use position in FIG. (In a use area described later with reference to FIG. 29). The adjustment operation of the use position of the table body 5 can be performed from the state in which the table body 5 is folded in two as shown in FIG. 3 or the state in which it is opened as shown in FIG.

  The adjustment movement of the use position of the table main body 5 is performed by the slide mechanism 10A of the table moving device 10 that expands and stores the table main body 5 between the storage position of FIG. 1 and the expansion position of FIG. In other words, the slide mechanism 10A functions not only to move the table body 5 in the front-rear direction in the deployment storage area between the storage position in FIG. 1 and the deployment position in FIG. It functions also as what moves to the front-back direction for the position adjustment after making it expand | deploy to the use position of FIG.

  The slide mechanism 10A is a width-direction rotation mechanism that rotates the table body 5 described later in the width direction when the table body 5 is moved in a deployment storage area between the storage position in FIG. 1 and the deployment position in FIG. It is designed to move in conjunction with 10B. When the table mechanism 5 is moved within the use region after being developed to the use position shown in FIGS. 3 to 4, the slide mechanism 10 </ b> A moves independently without interlocking with other mechanisms. It can be moved straight in the front-rear direction. The range of movement in the front-rear direction in which the slide mechanism 10A can operate in a state where the table body 5 is dropped into a horizontal position is defined as a “use area” by the movement restriction structure of the cam follower 18C by a guide hole 19B described later with reference to FIG. It is regulated within a set range. The slide mechanism 10A is held by the sliding frictional resistance at each position where the table body 5 is pushed and pulled in the front-rear direction within the use region.

  In order to return the table body 5 from the state in which the table body 5 is deployed to the use position to the state in which the table body 5 is housed in the original support base 4, the table body 5 is retracted in the procedure reverse to the above-described deployment operation. Move it to. Specifically, first, when the table main body 5 is in the expanded state as shown in FIG. 4, it is returned to the half-folded state as shown in FIG. Next, the table main body 5 is lifted to the unfolded position inclined obliquely upward as described above with reference to FIG. Then, the table body 5 is further operated to be pushed into the support base 4 from there. As a result, the table body 5 is pushed into the back side of the seat so as to draw a circularly descending arc, and is stored in the original posture in which the table body 5 is tilted outward and obliquely downward as shown in FIG. It becomes a state.

  At this time, the table main body 5 remains in a state where the switching device 20 pushes the table main body 5 out of the slit 4B even if the movement in the storage direction is stopped. In addition, only the lateral side portion (the handle portion 5 </ b> D) on the front end side is partly kept in a state where it is not housed in the support base 4. Accordingly, after the table body 5 is moved to the position where the movement in the storage direction is locked as described above, the operation is performed so as to push the lateral side portion that is finally left in a partially protruding state into the slit 4B. To do. As a result, as shown in FIG. 32, the switching device 20 inside the support base 4 is pushed by the table main body 5 to be switched to a concave state (FIG. 36) in which the table main body 5 can be received. 4 is held in a fully housed state.

  The operation of returning the table main body 5 from the use position of FIGS. 3 to 4 to the storage position of FIG. 1 is the same operation feeling regardless of the position in which the table main body 5 is adjusted in the use area. Can be done easily. Specifically, the table body 5 is operated to lift the table body 5 and push it toward the inside of the support base 4 as described above, regardless of the position in the use region. do it. By such an operation, the table body 5 is directed toward the inside of the support base 4 along with the rotational movement in the storage direction or with the slide movement regardless of the position from which position in the use area. The movement is guided so as to slide backward while rotating in the width direction. Therefore, the table body 5 can be stored and operated with the same operational feeling.

  As described above, the table Ta according to the present embodiment is used when the table body 5 is unfolded and stored between the storage position of FIG. 1 and the unfolded position of FIG. When returning to the storage position in FIG. 1, the slide mechanism 10 </ b> A of the table moving device 10 and the rotation mechanism 10 </ b> B in the width direction move in conjunction with each other. Thus, the table body 5 can be rotated in the width direction while linearly moving in the front-rear direction by a simple operation of simply pushing and pulling the table body 5 in a specific direction, and the large movement range described above is reduced. It can be moved efficiently in the moving space.

  Hereinafter, the table main body 5 described above, the table moving device 10 that unfolds and stores the table main body 5 and adjusts the position thereof, a state in which the table main body 5 is completely stored in the support base 4 by a push operation, and a part thereof ( Each of the configurations of the switching device 20 that switches the handle portion 5D) to a state in which the handle portion 5D protrudes to the outside will be specifically described in detail. In the following description, when the position of the table main body 5 is expressed as “storage position”, the table main body 5 is completely stored in the support base 4 as shown in FIG. When expressed as “projecting position”, a part of the table body 5 (the handle portion 5D) protrudes outside the support base 4 as shown in FIG. 31, and when expressed as “deployed position”, the table body 5 2 represents a state in which the posture is expanded to a right shoulder as shown in FIG. 2, and the expression “use position” represents a state in which the table main body 5 is dropped into a horizontal posture as shown in FIG. Further, when the movement area of the table body 5 is expressed as “development storage area”, the table body 5 represents the movement area between the storage position of FIG. 1 and the expansion position of FIG. 2 and expressed as “use area”. In this case, the table main body 5 is expanded to the use position shown in FIG.

  First, the configuration of the table body 5 will be described. As shown in FIGS. 3 to 5, 7 and 25, the table main body 5 has table pieces 5 </ b> A and 5 </ b> B made of two long resin plates having substantially the same size as each other. It is the structure connected so that it could be opened and closed in the direction. As a result, the table body 5 has a state in which the two table pieces 5A and 5B are folded in two (see FIG. 3), and a state in which the table body 5 is spread out in a lateral direction (see FIG. 4). These two states can be switched.

  As described above with reference to FIGS. 3 to 4, when the table body 5 is used in a state of being placed in a horizontal posture at a position on the front side of the seated person, the table body 5 is folded in two (see FIG. 3), The upper table piece 5A can be used as an accessory holder by switching between the two states of expanding the front table piece 5A from the lower table piece 5B to the front side. The table main body 5 is widened in a flat manner by spreading the upper table piece 5A from the lower table piece 5B to the front side so that the edges connected by the hinge portions 5C abut each other. It is to be locked in the state.

  Strictly speaking, the table main body 5 described above has a table piece 5A that is on the upper side when folded in two, rather than the lower table piece 5B, as shown in FIGS. It has a shape having an overhanging portion 5A3 that projects to the outer peripheral side. The overhanging portion 5A3 is formed continuously and widely over one side inside the sheet of the upper table piece 5A and two sides adjacent thereto, and each of the overhanging inclined surfaces is inclined downward. 5A4 is formed. Also, each edge surface located on the lower side of each inclined surface 5A4 of the lower table piece 5B is formed as an inclined surface 5B3 that is inclined so as to be flush with each inclined surface 5A4. Yes.

  By the inclined surfaces 5A4 and 5B3, the step between the edge surface of the lower table piece 5B formed by the protrusion of the protrusion portion 5A3 of the upper table piece 5A is loosened, and the edge surfaces of the upper table pieces 5A3 become surfaces. It is said to have been finished in a uniform manner. Further, since the protruding portion 5A3 of the upper table piece 5A has a shape protruding to the outer peripheral side from the edge surface of the lower table piece 5B, the front side of the table body 5 in which the seated person is folded in half. The upper table piece is brought into contact with only the edge surface (the overhanging portion 5A3) of the upper table piece 5A by placing (touching) the side edge surface or the left or right edge surface. The opening operation of 5A can be performed easily. In addition, the inclined surfaces 5A4 and 5B3 facing the slit 4B of the table main body 5 described above are stored in the support base 4 in the storage position where the table main body 5 is stored in the support base 4 while being inclined obliquely outwardly downward. As a state in which the inner side surface 4C is flush with the inner side surface 4C, the slit 4B is arranged so as to be obscured and covered (see FIGS. 14 to 18).

  Next, the configuration of the table moving apparatus 10 will be described with reference to FIG. The table moving device 10 includes a slide mechanism 10A that slides the table body 5 in the front-rear direction of the seat with respect to the support base 4, and a rotation mechanism 10B in the width direction that rotates the table body 5 in the seat width direction with respect to the support base 4. And a rotation mechanism 10 </ b> C in the height direction that rotates the table body 5 in the height direction with respect to the support base 4.

  In the table moving device 10 described above, the slide mechanism 10A and the width-direction rotating mechanism 10B described above are interlocked with each other in the unfolded storage area in which the table body 5 is moved between the storage position in FIG. 1 and the unfolded position in FIG. And move. As a result, the table moving apparatus 10 efficiently deploys the table body 5 between the storage position (see FIG. 1) inside the support base 4 and the unfolded position on the front side of the seated person (see FIG. 2) in a small moving space. It can be stored.

  Further, the table moving device 10 is switched to a state in which the rotating mechanism 10C in the height direction can operate by moving the table body 5 from the storage position inside the support base 4 to the unfolded position in FIG. Then, the table body 5 can be dropped from the unfolded position in the oblique position shown in FIG. 2 to the use position in the horizontal position shown in FIG. Therefore, by dropping the table main body 5 to the use position state shown in FIG. 3, the table main body 5 can be used as a small object stand. The table moving device 10 switches the table main body 5 to the use position in the horizontal posture by the height direction rotation mechanism 10C as described above, thereby switching the width direction rotation mechanism 10B to an inoperable state. Further, the movement in the width direction can be held in a locked state so that the table body 5 is not inadvertently turned toward the storage position.

  Further, the table moving device 10 is configured to keep the slide mechanism 10A operable even when the table main body 5 is switched to the use position shown in FIG. 3 as described above. Specifically, in the slide mechanism 10A, the table body 5 is switched from the deployed position shown in FIG. 2 to the use position shown in FIG. However, sliding to the front side is allowed up to a certain range. Therefore, the use position of the table body 5 can be adjusted in the front-rear direction by the range in which the slide mechanism 10A can slide in the front-rear direction.

  Hereinafter, the structure of each member of the table moving apparatus 10 mentioned above is demonstrated. As shown in FIG. 5, the table moving device 10 is roughly divided into a fixed frame 11, a rail 12, a slider 13, a helper 14, a winding device 15, a base plate 16, a stud bolt 16D, and a lock. The plate 17, the rotating arm 18, and the guide plate 19 are configured. The fixed frame 11 is integrally fixed inside the support base 4. The rail 12 is integrally fixed to the fixed frame 11. The slider 13 and the helper 14 are provided so as to be slidable in the front-rear direction with respect to the rail 12. The winding device 15 is configured to apply a winding force to the helper 14 and apply an urging force in the developing direction to the slider 13 via the helper 14. A slide mechanism 10 </ b> A that moves the table body 5 in the front-rear direction with respect to the support base 4 is configured by the above-described mechanism in which the slider 13 slides in the front-rear direction with respect to the rail 12.

  The base plate 16 is integrally fixed to the upper portion of the slider 13. The lock plate 17 is a component that enables the rotation of the rotary arm 18 to be locked at the unfolded position of the table body 5, and is attached to the base plate 16 in a state where the mounting position in the rotational direction can be adjusted. (Adjustment mechanism 10D). The rotary arm 18 is rotatably connected to the base plate 16 via a stud bolt 16D. The table body 5 is connected to the tip of the rotary arm 18 so as to swing in the height direction. Yes. A mechanism for rotating the rotating arm 18 in the width direction with respect to the base plate 16 constitutes a rotating mechanism 10B in the width direction for rotating the table body 5 in the width direction with respect to the support base 4.

  Further, the table body 5 is connected to the rotary arm 18 so as to swing in the height direction so that the table body 5 is rotated in the height direction with respect to the support base 4 in the height direction. A rotating mechanism 10C is configured. The guide plate 19 is integrally fixed to the rail 12, and guides the movement of the cam follower 18C attached to the rotary arm 18 by a guide hole 19B formed in the upper surface portion thereof, whereby the table body 5 The movement of the rotary arm 18 and the movement of the slider 13 are linked (linked) to each other so that the movement of the movement of the movement of the rotation arm 18 takes place through a predetermined path.

  Next, the specific structure of each member that has appeared will be described in more detail. As shown in FIG. 5, the fixed frame 11 is formed by bending a single aluminum alloy material that is long in the longitudinal direction of the seat into a substantially U-shape in the short direction. The bottom surface of the fixed frame 11 is applied to a component frame inside the support base 4 and is integrally fastened and fixed (see FIGS. 14 to 19). Specifically, as shown in FIGS. 14 and 17 to 19, the cross-sectional shape of the fixed frame 11 bent into a U shape includes a bottom surface portion that faces the upper side of the seat, and a seat outer side of the bottom surface portion ( The outer inclined standing surface portion 11X is bent so as to stand obliquely upward from the outer edge of the sheet (left side in the figure), and is bent so as to stand straight up from the inner edge (right side in the figure) of the bottom surface. The inner vertical standing surface portion 11Y and the inner inclined standing surface portion 11Z bent so as to stand obliquely upward from the inner vertical standing surface portion 11Y to the outside of the seat are formed in a cross-sectional shape.

  The outer inclined standing surface portion 11X and the inner inclined standing surface portion 11Z of the fixed frame 11 are formed to extend in parallel to each other. As shown in FIGS. 5 and 10, the inner vertical upright surface portion 11Y of the fixed frame 11 has a first guide bracket 11A made of an aluminum alloy bent in a cross-sectional crank shape on the side surface inside the seat. The side pieces on the side are applied and are integrally fastened by a plurality of bolts 11A1. Further, the upper side piece of the first guide bracket 11A protruding in a step shape above the seat inner side is further provided with an aluminum alloy second guide bracket 11B having a transverse cross-sectional shape extending straightly to the seat upper side. The lower side piece is applied and is integrally fastened by a plurality of bolts 11B1. Further, a resin-made guide cap 11C is integrally attached to the upper edge portion of the second guide bracket 11B.

  The first guide bracket 11A, the second guide bracket 11B, and the guide cap 11C described above are each formed in an elongated shape in the longitudinal direction of the seat along the shape of the fixed frame 11, as shown in FIG. Thus, the guide cap 11C is disposed at a position higher than the fixed frame 11 over a wide range of the fixed frame 11 in the front-rear direction of the seat. The guide cap 11 </ b> C functions as a support member for suppressing bending due to the weight of the table body 5.

  Specifically, the guide cap 11C is applied from the lower side to the rib 5B4 that is formed in a streak-like manner on the back surface of the table body 5, so that the table body has a small contact area that contacts only the rib 5B4. 5 can be strongly supported from the lower side. By preventing the table body 5 from being bent by the guide cap 11C, the lateral bending load (moment M: see FIG. 10) input from the table body 5 to the slide mechanism 10A is reduced, and the sliding resistance of the slide mechanism 10A is increased. The table body 5 can be smoothly unfolded and stored without causing it to move.

  The rail 12 is made of an aluminum alloy material having an H-shaped cross section that is long in the front-rear direction of the seat, and each of the surface portions constituting both the H-shaped legs is formed on the outer inclined upright surface portion 11X of the fixed frame 11 and the inner side. By being respectively fastened to the inclined upright surface portion 11Z and integrally fastened by a plurality of bolts 12A, the fixed frame 11 is integrally coupled as a state inclined obliquely upward toward the seat outer side. (See FIG. 14). The rail 12 is formed in a shape in which both shoulder-side ends formed in an H-shaped cross-section are bent so as to bend to the opposite outer sides, and extend to the outer sides. According to the shape of each edge portion, the slider 13 and the helper 14 described later are fitted and assembled so as to be slidable in the longitudinal direction so as not to be peeled upward.

  As shown in FIG. 14, the H-shaped connecting surface portion of the above-described rail 12 whose surface is obliquely directed upward on the outer side of the rail 12 extends in a slit shape from the substantially central region in the longitudinal direction to the rear end portion. An opening 12B penetrating therethrough is formed (see FIGS. 21 to 22). The opening 12B functions to restrict a slide area of the helper 14 to be described later within a certain range (within the deployment storage area). As shown in FIG. 22, the stay 14A attached to the lower part of the helper 14 By passing (see FIG. 20) through the inside, the slide in the deployment direction of the helper 14 is configured to be stopped by contact with the stay 14A.

  As shown in FIG. 20, the slider 13 is formed of an aluminum alloy material having an inverted U-shaped cross section, and is fitted into the rail 12 in the longitudinal direction and assembled as shown in FIG. 19. It is assembled in a state straddling the rail 12 so as to sandwich both shoulder portions of the H-shaped rail 12 from both outer sides. Specifically, as shown in FIGS. 20, 21, and 23, the slider 13 is made of metal on the back side portion of the upper surface portion of the inverted U-shaped cross section and the back side portion of the lateral side surface portion inside the seat. Two bearings 13A and 13B are provided, and each of the bearings 13A and 13B is mounted between the shoulders of the H-shaped cross section of the rail 12 and the seat as shown in FIG. It is fitted and assembled in a state in which it can roll in the front-rear direction, between the edge portions projecting inside the seat formed on the inner shoulder and leg portions.

  Further, as shown in FIG. 19, the slider 13 is formed in a shape in which the lower end of the outer side surface portion of the inverted U-shaped cross section is bent inwardly of the sheet, and the bent lower end side surface portion and the upper surface are formed. The rail 12 is assembled to the rail 12 so that the edge portion of the shoulder portion outside the seat of the H-shaped cross section of the rail 12 is sandwiched in the height direction. Then, the lower end surface portion and the upper surface portion of the lateral side surface portion outside the seat of the slider 13 that sandwiches the edge portion of the rail 12 that protrudes outside the seat in the height direction, respectively, become a backlash member made of resin. A resin shoe 13C is integrally connected.

  Each of the resin shoes 13C is applied from both sides in the height direction to the edge portion of the rail 12 projecting outside the seat, and the edge portion is sandwiched in the height direction. With these resin shoes 13C, the slider 13 can be smoothly slid due to the sliding property of the resin while being loosely packed in the height direction with respect to the rail 12. As shown in FIG. 20, each of the resin shoes 13C described above is formed in an elongated plate shape having the same length in the front-rear direction as the slider 13, and is integrated with each surface portion of the slider 13 described above. The slider 13 is fixed by being attached from both ends in the front-rear direction by means of covers 13D that are bolted to and attached to both ends of the slider 13 at both ends in the longitudinal direction. In contrast, it is in a state of being firmly and integrally coupled.

  Further, the slider 13 can be smoothly moved in the sliding direction with respect to the rail 12 by being assembled through the bearings 13A and 13B described above, and protrudes from the slider 13 to the inside of the seat. Even if it receives a lateral bending load (moment M) around the rail 12 due to the cantilevered support of the table body 5 (see FIG. 13) in a posture, the sliding frictional force on the rail 12 is not greatly increased. It can slide smoothly. Specifically, the slider 13 described above is configured to support the table body 5 assembled on the upper surface thereof in a cantilevered form from the outside of the seat when unfolded. The bending load (moment M) is strongly received by the rail 12 by the strength of the metal bearings 13A and 13B described above.

  More specifically, as shown in FIG. 23, the slider 13 is a timepiece having an axis in the front-rear direction in which the rail 12 extends by supporting the table body 5 (see FIGS. 13 to 14) from the outside of the seat. In response to a lateral bending load (moment M) acting in the rotational direction, the contact portion between the lateral side surface portion close to the table body 5 and the rail 12 receives a particularly strong load in the compression direction. However, the slider 13 is configured such that the contact portion between the rail 12 and the lateral side surface near the table main body 5 that receives a strong load in the compression direction is configured by a metal bearing 13B having high structural strength. The above load can be received strongly.

  Further, the slider 13 receives a lateral bending load (moment M) received by supporting the table main body 5 in a cantilever manner, and the bearing 13A fitted between the H-shaped shoulder portions of the rail 12 is It can be received strongly by being pressed in the width direction. In this way, the slider 13 is provided with the metal bearings 13A and 13B having high structural strength as described above at the portion that receives the lateral bending load (moment M) received by supporting the table body 5 in a cantilever manner. By being provided, it is possible to reduce the load applied to the region where the resin shoe 13C is disposed, and to smoothly slide with respect to the rail 12 even in a state of receiving a lateral bending load from the table body 5. It has become.

  As shown in FIGS. 20 to 22, the helper 14 is assembled with the slider 13 so as to be slidable in the longitudinal direction with respect to the rail 12, and the urging force in the winding direction received from the winding device 15 described later. Thus, the slider 13 is constantly applied with an assisting force in the unfolding direction for sliding forward in the predetermined range within the predetermined range. Specifically, when the slider 13 moves the table body 5 in the deployment storage area between the storage position of FIG. 1 and the deployment position of FIG. When the assist force is applied and the slider 13 moves the table body 5 in the previous use area where the table body 5 is dropped to the use position in FIG. 3, the assist force in the deployment direction is not applied to the slider 13 with respect to the rail 12. The movement is regulated within a certain range.

  Specifically, as shown in FIG. 22, the helper 14 is assembled to the rail 12 so that the stay 14A attached to the lower portion of the helper 14 is passed through the opening 12B formed in the rail 12 described above. The stay 14A can be slid forward with respect to the rail 12 until the stay 14A moves in the opening 12B of the rail 12 and contacts the front end of the opening 12B. . The helper 14 can apply an assist force (pressing force) in the deploying direction to the slider 13 from the rear side within a range in which the helper 14 can slide in the front-rear direction with respect to the rail 12.

  As shown in FIGS. 20 and 24, the helper 14 is formed of an aluminum alloy material having an inverted U-shaped cross section. The helper 14 is fitted into the rail 12 in the longitudinal direction and assembled to the slider 12 described above. 13, the rail 12 is assembled in a state straddling the rail 12 so as to sandwich both shoulders of the rail 12 having an H-shaped cross section from both outer sides. Specifically, the helper 14 is formed in a shape in which the lower ends of the left and right lateral side surfaces of the inverted U-shaped cross section are bent inwardly toward each other. The helper 14 is peeled from the rail 12 by being assembled in such a state that the lower end portions of the bent shape are hooked from the lower side to the respective edge portions projecting to both outer sides of the shoulder portions of the rail 12. It is in a state assembled in a prevented state.

  Further, an upper surface portion that sandwiches the shoulder portions of the rail 12 of the helper 14 from both sides in the height direction and a bent surface portion on the lower end side of the lateral side surface portions on both the left and right sides, respectively, A resin shoe 14B is integrally coupled. These resin shoes 14B are applied to the respective edge portions projecting from both outer sides of the shoulder portions of the rail 12 from both sides in the height direction so that the edge portions are sandwiched in the height direction. Yes. By these resin shoes 14B, the helper 14 is assembled in such a manner that it can be smoothly slid due to the slidability of the resin while being loosely packed in the height direction with respect to the rail 12.

  As shown in FIG. 20, each of the resin shoes 14B described above is formed in an elongated plate shape having the same length in the front-rear direction as the helper 14, and is integrated with each surface portion of the helper 14 described above. And both ends in the longitudinal direction are fixed by being applied from both ends in the front-rear direction by covers 14C that are bolted and attached to both ends of the helper 14. 14 in a state of being firmly and integrally coupled to 14. The helper 14 can move the slider 13 in the unfolding direction by appropriately pressing the slider 13 from the rear side of the seat, by the configuration packed with the resin shoes 14B.

  As shown in FIG. 8, the slider 13 that receives the assisting force in the deploying direction by the helper 14 will be described later connected to the upper portion of the slider 13 when the table body 5 is stored in the storage position inside the support base 4. With the configuration in which the cam follower 18C of the rotary arm 18 is hooked into the lock groove 19B1 in the guide hole 19B of the guide plate 19, the sliding toward the front side of the seat is held in a restricted state. ing. Further, as shown in FIG. 31, the slider 13 pushes a part of the table body 5 (the handle portion 5D) facing the inside of the slit 4B of the support table 4 into the support table 4 so as to push the table body. Even when a part of 5 (handle part 5D) is switched to a partly projecting state in which the part 5 protrudes to the outside of the support base 4, the cam follower 18C is not completely removed from the lock groove 19B1 and moves to the front side of the seat. The slide is held in a regulated state.

  After the table main body 5 is switched to the partially protruding state, the slider 13 is operated as described above by operating the seat portion so that the seated person grasps the partially protruding handle portion 5D and pulls it into the seat. The cam follower 18C is completely removed from the lock groove 19B1 and switched to a state in which the cam follower 18C can slide to the front side of the seat. As a result, as shown in FIG. 29, the slider 13 receives the assist force from the helper 14 described above and can slide forward. Note that the slider 13 is switched to the partially protruding state by the push operation of the table body 5, so that the cam follower 18C described above with reference to FIG. 8 is completely removed from the lock groove 19B1 of the guide hole 19B and slides forward of the seat. It may be configured to be in a state where it can be performed.

  As shown in FIG. 22, the slider 13 does not receive the assist force from the helper 14 by sliding to the end position (deployment position of the table body 5) of the deployment storage area where the assist force is applied by the helper 14. It is in a state and is locked by sliding friction with the rail 12 at that position. The slider 13 is operated by a manual operation in which a seated person pushes and pulls the table body 5 in the front-rear direction in a use area where the table body 5 is dropped into a horizontal posture and used beyond the unfolded storage area. It is moved to an appropriate position and is locked by sliding friction with the rail 12 at each moved position.

  As shown in FIGS. 5 and 9 to 12, the winding device 15 includes a wire 15 </ b> A that is connected to the above-described helper 14 and applies a biasing force in the winding direction to the helper 14 by a spring force. Yes. The winding device 15 is fixed to a frame material (not shown) at a position separated from the lower portion on the front end side of the fixed frame 11 inside the support base 4, and the wire 15 </ b> A fed out from the frame material is connected to the rail 12. It is routed between the bottom of the support frame 11 and the fixed frame 11 (see FIGS. 16 to 19), and the end of the tip is connected to the bottom of the stay 14A of the helper 14 by the bolt 15B. . As a result, the urging force in the winding direction applied to the wire 15A by the winding device 15 is always applied to the helper 14, and the helper 14 is constantly subjected to the urging force that is moved forward of the seat. .

  As shown in FIG. 5, the base plate 16 is formed of a thick plate-like aluminum alloy material, applied to the upper surface portion of the slider 13 described above, and integrally fastened and fixed by a plurality of bolts 16C. It is in a state. A stud bolt 16D that functions as a rotating shaft of a rotating arm 18 (to be described later) is assembled to the base plate 16 from the upper surface side, and is firmly fastened and fixed by a bolt 16D1 passed from the bottom surface side of the base plate 16. It is said that it was in the state.

  The stud bolt 16D has a stepped shaft portion protruding from the base plate 16 to the upper side of the seat, and the lock plate 17 and the rotary arm 18 are arranged in the axial direction on the coaxial portion. After the insertion, the bush 16E is further passed through and the nut 16F is screwed and fastened, whereby the lock plate 17 and the rotary arm 18 are assembled in a state in which the shaft can rotate. As will be described later, the lock plate 17 is integrally attached to the base plate 16 in the rotation direction. However, the adjustment position of the lock plate 17 with respect to the base plate 16 can be adjusted by an adjustment mechanism 10D described later. It is like that.

  On the upper surface of the base plate 16 described above, a stopper 16A capable of locking the rotational movement of the rotary arm 18 in the deployment direction at the deployment position, and an assembly position in the rotation direction of the lock plate 17 described later are adjusted. Two screwing portions 16B to which the adjustment bolt 16B1 is screwed are formed. Each of the latter screwing portions 16B is provided at an outer edge of the base plate 16, and an adjustment bolt 16B1 is screwed into each screwing portion 16B from the outside of the seat so that each adjustment bolt 16B1 is screwed. As a result of this adjustment, the protruding length of the shaft portion protruding to the tip of each adjusting bolt 16B1 can be changed.

  Further, a resin side cover 16G that covers the side surface of the base plate 16 and the slider 13 is integrally fastened to the side surface of the base plate 16 inside the seat by a plurality of bolts 16G1. An upper cover 16H made of an aluminum alloy that covers the rotating arm 18 assembled to the upper surface portion of the base plate 16 from the upper surface side is integrally fastened to the upper surface portion of the base plate 16 by a plurality of bolts 16H1. Each of the bolts 16H1 has a spacer 16H2 passed through each shaft portion passed between the upper cover 16H and the base plate 16, and the upper cover 16H is attached to the rotary arm 18 by attachment via the spacer 16H2. It is in the state fixed to the state which floated from the rotation arm 18 without pressing.

  The lock plate 17 is formed of a plate-like aluminum alloy material cut into a substantially fan shape, and is assembled in a state of being overlaid on the base plate 16 through the stud bolt 16D fastened to the base plate 16 described above. ing. As a result, the lock plate 17 is assembled on the base plate 16 so as to be able to rotate about the stud bolt 16D. Further, the above-described rotating arm 18 is also passed through the stud bolt 16D described above and assembled to the upper portion of the lock plate 17 so as to be able to rotate about the stud bolt 16D.

  In the lock plate 17 described above, the shaft portions of the adjustment bolts 16B1 protruding from the two screwing portions 16B provided on the base plate 16 are pressed from both directions in the rotational direction around the stud bolt 16D. The two-way movement in the rotational direction with respect to the base plate 16 is constrained so as to be integrally fixed on the base plate 16. Each of the adjustment bolts 16B1 can individually adjust the screwing position with respect to each screwing portion 16B, and by individually adjusting the protruding amount of the shaft portion of each adjusting bolt 16B1, The arrangement position of the lock plate 17 in the rotation direction around the stud bolt 16D with respect to the base plate 16 can be adjusted.

  The above-described lock plate 17 is formed with a long hole 17A curved in an arc shape drawn around the above-described stud bolt 16D in the upper surface portion thereof, penetrating in the plate thickness direction. The long hole 17A receives a lock pin 18E1 (described later) provided on the back surface of the rotary arm 18 assembled to the upper part of the lock plate 17 and moves the rotary arm 18 around the stud bolt 16D. The lock pin 18E1 is slid along the inner hole shape. Further, the end of the elongated hole 17A where the lock pin 18E1 is moved by the rotation of the rotating arm 18 is extended so that the hole shape is drawn to the rotation center side (stud bolt 16D side). The drawn-out drawing hole 17B is formed.

  The pull-in hole 17B is formed at the end position of the long hole 17A where the lock pin 18E1 reaches when the rotary arm 18 rotates the table body 5 to the deployed position. Here, the rotational movement of the rotating arm 18 in the unfolding direction is such that the locking protrusion 18F formed on the back surface of the rotating arm 18 contacts the stopper 16A formed on the base plate 16 as shown in FIG. By being locked, the deployment position is restricted. The pull-in hole 17B is a state in which the lock pin 18E1 reaches the end position of the long hole 17A by the rotation of the rotary arm 18 to the unfolded position (the table body 5 is in an oblique posture in which the right shoulder rises). By dropping the main body 5 into the use position in the horizontal posture, the lock pin 18E1 is pulled into the interior, and functions as a lock hole that restricts rotational movement in the width direction returning inside the long hole 17A of the lock pin 18E1. It has become. With this lock, the return rotation in the width direction from the state where the table body 5 is dropped into the use position in the horizontal posture can be restricted.

  The aforementioned pull-in hole 17B is formed in a shape wider than the diameter of the lock pin 18E1 so that the lock pin 18E1 can be retracted by absorbing errors in assembly of the lock plate 17 and the rotary arm 18 and manufacturing errors. However, if the width of the pull-in hole 17B is wider than the diameter of the lock pin 18E1, even if the lock pin 18E1 is pulled into the pull-in hole 17B, the lock pin 18E1 is loose in the rotation direction within the pull-in hole 17B. Will end up. This backlash is not preferable because it acts as a backlash in the turning direction (deployment and storage direction) in a state where the table main body 5 is dropped into the use position in the horizontal posture.

  Therefore, in order to suppress the occurrence of the rattling, the lock plate 17 described above is in a state where the rotation mechanism is positioned with respect to the base plate 16 by the adjustment mechanism 10D as follows. That is, as shown in FIG. 30, the lock plate 17 rotates the rotary arm 18 described above to the deployment position around the stud bolt 16 </ b> D, and the locking projection 18 </ b> F formed on the back surface portion of the rotary arm 18 has a base plate. The base plate so that the lock pin 18E1 of the rotary arm 18 is brought into contact with the side surface 17B1 opposite to the unfolding direction of the drawing hole 17B and can be drawn into the drawing hole 17B at the position where the stopper 16A is locked. The mounting position in the rotational direction with respect to 16 is adjusted by each adjusting bolt 16B1.

  With this adjustment, when the lock pin 18E1 of the rotary arm 18 is pulled into the pull-in hole 17B of the lock plate 17, the lock pin 18E1 is brought into contact with the side surface 17B1 of the pull-in hole 17B described above. The rotation in the abutting direction (one direction) is restricted, and the locking projection 18F of the rotating arm 18 described above is locked in the locking direction (the other direction) by the locking structure that contacts the stopper 16A on the base plate 16. As a state in which the rotation is also restricted, the two-way movement in the rotational direction is restricted, and it is locked in a state without backlash.

  The above-described drawing hole 17B has a receiving surface 17C for receiving the lock pin 18E1 in a position where it abuts on the side surface 17B1 described above, and is formed in an inclined shape so that the lock pin 18E1 can be widely received and guided. Yes. As a result, the lock pin 18E1 can be smoothly inserted into the pull-in hole 17B even if the lock pin 18E1 is narrowly inserted into the pull-in hole 17B so as not to rattle in both directions in the rotational direction. It can be inserted. As a result, the lock plate 17 can be accurately positioned with respect to the base plate 16 so that the lock pin 18E1 (rotating arm 18) does not rattle. Further, as described above, the lock pin 18E1 is drawn into the drawing hole 17B, so that the lock pin 18E1 pulled up to a high position by the slide in the long hole 17A is lowered to a low position. The lock pin 18E1 can be stopped and the height can be lowered simultaneously. As a result, the table body 5 that is obliquely pulled up from the storage position in FIG. 1 to the unfolded position in FIG. 2 can be used by dropping it into a low-use position as shown in FIG.

  As shown in FIG. 5 to FIG. 7 and FIG. 26, the rotary arm 18 is formed of a long plate-like aluminum alloy material, and the stud bolt 16D described above is passed through a portion near the rear end inside the seat. In addition, the stud bolts 16D are assembled so as to be able to rotate in the width direction with respect to the lock plate 17 around the stud bolt 16D. Specifically, the rotary arm 18 is overlapped on the lock plate 17 so that a lock pin 18E1 (described later) formed on the back surface of the rotary arm 18 enters the elongated hole 17A of the lock plate 17 described above. It is supposed to be assembled.

  As shown in FIGS. 7 and 26, the rotary arm 18 described above swings the back surface of the table main body 5 in the height direction via the insertion-type first connecting pin 18A at the edge on the front end side. The table body 5 is connected to the front end side edge of the connecting link 18D hinged at a position close to the front end side edge portion via the plug-in type second connection pin 18B. Is configured to be pin-coupled so as to be capable of swinging in the height direction. The above-described connecting link 18D is connected to a tip of a slide plate 18E that is assembled to the back surface of the rotary arm 18 so as to be slidable in the longitudinal direction, and is connected to a pin so as to be able to swing in the height direction. It is supposed to be in a state. The above-described slide plate 18E is set in a recess formed on the back surface of the rotary arm 18, and is assembled in such a state that it can slide straight in the longitudinal direction of the rotary arm 18 along the shape of the recess. The lid cover 18H attached to the back surface of the rotating arm 18 is pressed and provided so as not to drop off from the back surface of the rotating arm 18.

  As shown in FIG. 27, the above-described connecting link 18D has the above-described connection structure, so that the above-described table is adapted to the movement of the slide plate 18E sliding in the longitudinal direction with respect to the rotary arm 18. The main body 5 is pushed and pulled through the second connecting pin 18B, and the link movement is performed so that the rotary arm 18 swings in the height direction around the first connecting pin 18A. Thus, the rotary arm 18 moves the table body 5 and the connecting link 18D with respect to the table body 5 in accordance with the movement of the table body 5 swinging in the height direction around the first connecting pin 18A. The slide plates 18E connected to each other slide in the longitudinal direction with respect to the rotary arm 18, and are connected to each other so as to move the slider crank.

  As shown in FIG. 27, the connecting link 18D described above takes a posture state in which the table body 5 is brought into a posture parallel to the slide plate 18E when the table body 5 is overlaid on the upper portion of the rotary arm 18. Then, the connecting link 18D is rotated in the direction in which the table body 5 is raised from the overlapped state with the rotary arm 18 around the first connecting pin 18A (dropped to the use position state in the horizontal posture). The slide plate 18E is slid so as to be pulled in while being raised from the slide plate 18E by being pulled upward by the table body 5.

  As described above, the above-described rotating arm 18 is configured to be connected to the base plate 16 around the stud bolt 16D, and the table body 5 attached to the upper portion thereof is illustrated in FIG. 1 is configured to be able to rotate in the sheet width direction between the storage position shown in FIG. 1 and the unfolded position shown in FIG. 2 (width-direction rotating mechanism 10B). Further, the rotary arm 18 has a structure in which the table main body 5 is connected to the upper portion of the rotary arm 18 via the above-described mechanism for moving the slider crank, so that the table main body 5 is positioned as shown in FIG. It is comprised so that it can be rotated also to a height direction between the use positions of the horizontal attitude | position shown in (rotation mechanism 10C of a height direction).

  Here, as shown in FIGS. 6 to 7, the above-described slide plate 18E is provided with the above-described lock pin 18E1 protruding from the rear surface on the rear end side, and the lock pin 18E1 is the lock plate 17 described above. As a result, the lock pin 18E1 slides along the shape of the long hole 17A of the lock plate 17 as the rotary arm 18 rotates. . The slide plate 18E cannot be slid unless the table body 5 is moved to the unfolded position shown in FIG. 2 by a guide structure in which the lock pin 18E1 is assembled in the long hole 17A of the lock plate 17. ing.

  That is, as described above with reference to FIG. 30, the slide plate 18 </ b> E cannot slide so that the lock pin 18 </ b> E <b> 1 is pulled into the pull-in hole 17 </ b> B unless the rotary arm 18 rotates to the position where the table body 5 is deployed to the deployment position. This is because the restriction structure prevents the rotary arm 18 from being slid unless the table body 5 moves to the unfolded position. Therefore, in the region where the sliding of the slide plate 18E is restricted, the table body 5 is held in a state of being superimposed on the upper surface of the rotary arm 18, as shown by the solid line state in FIG. ing.

  As shown in FIG. 2, the slide plate 18 </ b> E has a state in which the table body 5 is deployed to the deployed position by the rotation of the rotary arm 18, and the lock pin 18 </ b> E <b> 1 is pulled in as shown in FIG. 30. It will be in the state which can be slid with respect to the rotation arm 18 in the aspect pulled in in 17B. By this sliding, the slide plate 18E is allowed to move so that the table body 5 is dropped from the deployed position to the use position in the horizontal posture. The table body 5 is deployed to the deployed position by the rotation of the rotary arm 18 and is dropped to the use position in the horizontal posture by its own weight.

  Here, as shown in FIGS. 7 and 26, a damper 18J that applies a viscous resistance force to the sliding movement of the slide plate 18E is provided on the back surface of the rotary arm 18 described above. The damper 18J includes a pinion 18J1 that meshes with the rack teeth 18E2 formed on the side surface of the slider 13, and the rotational force input from the rack teeth 18E2 to the pinion 18J1 by the slide of the slider 13 is attenuated by the internal viscous structure. It has a configuration. The damper 18J is configured to apply a viscous resistance force to the bidirectional rotational force input to the pinion 18J1 in the rotational direction. By the action of the viscous resistance exerted by the damper 18J, the moment when the table body 5 is dropped into the use position in the horizontal posture by its own weight is appropriately attenuated, and the table body 5 is brought into the use position in the horizontal posture. It comes to be dropped slowly toward. Further, the moment when the table main body 5 is raised from the use position of the horizontal posture to the deployed position is also appropriately attenuated, so that the table main body 5 is slowly raised from the horizontal position.

  Specifically, the damper 18J is deployed between a deployment position where the table body 5 is superposed on the rotary arm 18 (a position in an oblique posture with a right shoulder rising) and a use position raised up from the rotary arm 18 (a horizontal position). A viscous resistance force is applied to the slide plate 18E constituting the slider crank mechanism to be housed. When the table main body 5 moves in an area close to the unfolded position, the slide plate 18E has a small slide movement amount relative to the movement amount of the swinging rotation of the table main body 5, but the table main body 5 moves in an area close to the horizontal position. In some cases, the slide movement amount is increased with respect to the movement amount of the swinging rotation of the table body 5. Therefore, by connecting the viscous damper 18J to the slide plate 18E that moves in such a manner, when the table body 5 is raised and lowered in the region close to the unfolding position (the position of the slanting posture that rises to the right), When the viscous resistance force by the damper 18J is applied to be small and the table body 5 is moved up and down in a region close to the use position (horizontal position), the viscous resistance force by the damper 18J can be applied to a large extent.

  Therefore, the initial region where the table body 5 starts to drop from the deployment position (an oblique posture in which the right shoulder is raised) to the use position (horizontal position), or the table body 5 is moved from the use position (horizontal position) to the deployment position (up right shoulder). The table body 5 can be raised and lowered smoothly without a sense of resistance in the final region where it has been raised to the position of the slanting posture. In addition, the final stage area where the table body 5 is dropped from the deployment position (an oblique posture where the shoulder is raised to the right) to the use position (horizontal position), and the table body 5 is moved from the use position (the horizontal position) to the deployment position (upward to the right). In the initial region where the table body 5 starts to be raised at an oblique position, the table body 5 can be effectively lowered and the table body 5 can be slowly raised and lowered with a good feeling of operation.

  Here, as shown in FIGS. 5, 7, 26, and 28, the table body 5 is moved from the use position (horizontal position) to the deployed position (between the rotary arm 18 and the table body 5 described above). When the table body 5 is lifted up to an approach area close to the unfolded position when it is lifted up to a position where the table is tilted to the right, the force in the direction of drawing (superposing) the table body 5 to the rotating arm 18 There is provided a magnet structure composed of a combination of a metal plate 18G and a magnet 5B5. Specifically, as shown in FIG. 5, the metal plate 18 </ b> G is provided at each of two edge portions on the inner side and the outer side of the upper surface of the rotating arm 18. Further, as shown in FIG. 7, the magnet 5 </ b> B <b> 5 is provided at two positions corresponding to the place where the metal plate 18 </ b> G is disposed on the back surface of the table body 5. The magnet structure allows the seated person to feel as a moderation feeling when the table body 5 is raised to the deployed position where the table body 5 is superposed on the rotary arm 18 by the attractive force exerted. With this moderation feeling, the operation of raising the table body 5 from the use position to the unfolded position can be performed with a good feeling of operation.

  Further, as shown in FIG. 7, the table main body 5 is further attached to the back surface of the table main body 5 when the table main body 5 is raised from the use position of FIG. 3 to the unfolded position of FIG. 2. A long plate-like rubber 5B6 is provided for buffering the hitting so as not to be pressed against it. As shown in FIGS. 7 and 28, two rubbers 5B6 are provided side by side between the above-described locations of the magnets 5B5, and are provided in a state of projecting larger than the magnets 5B5. As a result, each magnet 5B5 is applied to the back surface of the rotary arm 18 before it hits the metal plate 18G of the rotary arm 18, and the movement of the table body 5 raised to the unfolded position is buffered. Yes.

  Therefore, when the table body 5 is raised from the use position in FIG. 3 toward the unfolded position in FIG. 2 by the configuration provided with the rubber 5B6, the force that pulls the table body 5 to the rotary arm 18 by the above-described magnet structure. 2 can be softened so that the table main body 5 does not strongly collide with the rotary arm 18, so that the table main body 5 can be raised and locked at the unfolded position in FIG. Therefore, after raising the table main body 5 to the unfolded position, the storing operation of rotating the table main body 5 in the turning direction toward the storing position while maintaining the height state of the unfolded position can be smoothly performed.

  Further, the arrangement of the rubber 5B6 allows the magnet 5B5 and the metal plate 18G to be kept in a non-contact state separated from each other even when the table body 5 is raised from the use position to the deployed position. Thereby, it is adjusted so that the pulling force of the magnet structure does not act too strongly, and the table body 5 can be smoothly dropped from the unfolded position to the use position by its own weight.

  As shown in FIGS. 5 to 6, the cam follower 18 </ b> C is attached to the above-described rotating arm 18 at a position near the stud bolt 16 </ b> D that is the center of rotation. The cam follower 18C is attached to the rotary arm 18 through a cylindrical bush 18C2 at its shaft, and the outer ring rotates relative to the shaft at a position floating upward from the rotary arm 18. It is in a state where it is supported and provided. A brass cap 18C1 is attached to the outer ring so as to be covered from the outer peripheral side. The cam follower 18C is set by being inserted from below into a guide hole 19B formed in a guide plate 19 which will be described later, and the rotary arm 18 rotates in the seat width direction or the slider 13 moves in the seat front-rear direction. The inside of the guide hole 19B is slid by sliding movement.

  The guide plate 19 is formed of a single aluminum alloy material that is long in the front-rear direction of the seat, and each leg portion formed by bending downward at each edge portion on the front-rear side of the seat includes a plurality of bolts. The front end portion and the rear end portion of the rail 12 described above are integrally fastened and fixed by 19A. The guide plate 19 is formed with a guide hole 19B elongated in the front-rear direction on the upper surface thereof so as to penetrate in the thickness direction, and is attached to the rotary arm 18 described above in the guide hole 19B. The cam follower 18C is assembled from the lower side so as to be slidable inside.

  The guide hole 19B accommodates the table main body 5 in the support base 4 to allow the cam follower 18C to be received therein, and to slide the cam follower 18C along the surface when the table main body 5 is unfolded. Thus, the deployment guide surface 19B2 that guides the rotary arm 18 to gradually rotate in the deployment direction as the slider 13 moves forward, and the cam follower 18C to the surface when the table body 5 is stored. A storage guide surface 19B3 is provided that guides the rotary arm 18 so that the rotary arm 18 is gradually rotated in the storage direction as the slider 13 moves backward by sliding along the slider 13.

  The movement of the cam follower 18C is guided by the guide hole 19B formed in the guide plate 19 as described above when the table body 5 is deployed and stored as follows. That is, first, as shown by the solid line state in FIG. 29, the cam follower 18C is in the lock groove 19B1 formed in the rear end portion of the guide hole 19B when the table body 5 is housed in the support base 4. As a state of entering, the movement toward the front side of the seat is held in a restricted state. As a result, the forward movement of the slider 13 connected to the cam follower 18C is also restricted, and the table main body 5 remains in the storage position even if the urging force in the deployment direction from the helper 14 is applied to the slider 13. It is designed to be held in a state.

  As shown in FIG. 31, the cam follower 18 </ b> C seats the handle portion 5 </ b> D of the protruding table body 5 after the table body 5 is switched to a state in which the table body 5 partially protrudes from the inside of the support base 4 by a push operation. When a person grips and pulls in the seat, it rotates around the stud bolt 16D and is removed from the lock groove 19B1. As a result, the slider 13 can slide in the deploying direction, and can slide to the front side while receiving the assisting force received from the helper 14 in the deploying direction. Therefore, next, when the seated person grasps the handle portion 5D of the table body 5 and operates it so as to pull it into the seat, the cam follower 18C is pressed against the deployment guide surface 19B2, and follows the shape of the deployment guide surface 19B2. It is operated so as to be pushed and slid forward.

  Here, the unfolding guide surface 19B2 is formed as an inner peripheral surface facing the inner side of the seat in the guide hole 19B, and a region from the end portion on the rear side of the seat to the formation position of the step surface 19B4 in the middle on the front side. However, it is formed in a curved surface shape that smoothly spreads obliquely outward toward the front side of the seat. Thereby, the unfolding guide surface 19B2 does not slide the table body 5 further forward from the seat body by rotating the table body 5 from the storage position to the seat inner side and bringing the cam follower 18C into contact. Then, the movement of the cam follower 18C is regulated (guided) so that the table body 5 cannot be rotated further inward of the seat.

  With the guide structure of the unfolding guide surface 19B2, the table body 5 can be gradually unfolded and rotated to the inside of the seat as the slide moves forward from the storage position toward the unfolded position. The movement trajectory of 5 can be limited. That is, the guide structure of the unfolding guide surface 19B2 guides the rotational movement of the table body 5 in the unfolding direction in conjunction with the sliding movement to the front side of the seat. With this guide structure, the table body 5 is simply operated to be pulled out in front of the seat, and the table body 5 is gradually rotated inward while being slid forward of the seat so as not to interfere with the seated person's body. The seat can be deployed to a position on the front side of the seated person (deployed position in FIG. 2) while bypassing around the body of the seated person.

  The step surface 19B4 in the middle of the deployment guide surface 19B2 has a curved surface shape that allows the cam follower 18C to be rotated around the stud bolt 16D to the deployment position at that position, and the table body 5 is positioned at this position. The table body 5 can be rotated to the unfolded position on the front side of the seated person. The unfolding guide surface 19B2 is formed such that a region ahead of the step surface 19B4 extends straight toward the front side of the seat, and the cam follower 18C is rotated to the unfolded position by the step surface 19B4. It can be slid to the front side of the seat while maintaining the above.

  The unfolding guide surface 19B2 includes a unfolding and storing region that guides the region up to the stepped surface 19B4 in the middle so that the table body 5 is also rotated to the inside of the seat while sliding forward from the storing position toward the unfolding position. It has become. Specifically, in the unfolding guide surface 19B2, the region from the step surface 19B4 to the end of the rounded surface of the step surface 19B4 is also a region for unfolding the table body 5 to the unfolded position. 5 is only rotationally moved to the inside of the seat, and is not slid forward.

  The unfolding guide surface 19B2 is a use region that allows the region beyond the end of the rounded surface of the step surface 19B4 to be adjusted in the front-rear direction with the table body 5 dropped into the use position in the horizontal posture. Yes. In this area (usage area), only the slide movement of the table body 5 in the front-rear direction is performed, and the rotation in the sheet width direction is not performed in conjunction with it. Within the use area, the position of the table main body 5 is adjusted in the front-rear direction by an operation in which a seated person pushes and pulls the table main body 5 in the front-rear direction. The table body 5 is retracted to the rear end position of the use area, so that the cam follower 18C hits the rounded portion of the step surface 19B4 and the rearward movement is locked.

  The guide hole 19B is operated so that the occupant raises the table body 5 from the state where the table body 5 is in the horizontal posture and puts the table body 5 in a slanted posture state where the shoulder rises to the right and pushes the table body 5 outward. As a result, the cam follower 18C described above is rotated around the stud bolt 16D, separated from the deployment guide surface 19B2, and pressed against the storage guide surface 19B3 facing the same surface.

  The storage guide surface 19B3 is formed as an inner peripheral surface facing the outer side of the seat in the guide hole 19B, and the whole is formed in a curved shape so as to be smoothly pulled inward obliquely toward the rear side of the seat. Has been. As a result, the storage guide surface 19B3 rotates the table main body 5 to the outside of the seat so that the cam follower 18C is brought into contact with the storage main guide surface 19B3. The movement of the cam follower 18 </ b> C is guided so that 5 cannot be rotated further outside the seat.

  With the guide structure of the storage guide surface 19B3, the table body 5 is stored and rotated little by little toward the outside of the seat as the slide moves forward from the unfolded position in FIG. 2 to the stored position in FIG. The movement trajectory of the table body 5 can be limited so that it can be reached. That is, the guide structure of the storage guide surface 19B3 guides the rotational movement of the table body 5 in the storage direction in conjunction with the sliding movement toward the rear side of the seat. Therefore, with this guide structure, the table body 5 is simply operated to be pushed out rearward of the seat, and is rotated little by little while sliding the table body 5 rearward so as not to interfere with the support 4. Thus, it can be moved toward the storage position in FIG. 1 so as to pass through a predetermined path that does not interfere with other members.

  Specifically, the storage guide surface 19B3 is formed in a smoothly curved shape so that the whole is pulled inwardly toward the rear side of the seat, and the table body 5 is unfolded and stored. Even from the state in the area or the state in the use area, the table body 5 can be moved from the posture inclined to the right shoulder to the storage position by a single operation to push the seat body rearward and backward. The structure is such that it can be moved. Therefore, for example, the table main body 5 is always stored with the same operational feeling as compared with the configuration in which the table main body 5 is once returned from the use area to the boundary position with the deployment storage area and then the storage operation must be performed again. Since it can be easily returned to the position, the storage operability is good.

  Here, as shown in FIG. 29, the cam follower 18 </ b> C is deployed at the position where the helper 14 that applies the moving biasing force in the deployment direction to the slider 13, as described above with reference to FIG. The position is such that the guide surface 19B2 is moved in the developing direction to a position slightly in front of the step surface 19B4. Since the locking position of the helper 14 is set at such a position, even when the table main body 5 is stored from the rear end position of the use area, the helper 14 starts from the first area where the table main body 5 starts to be stored. The resistance of the helper 14 can be applied after the movement in the storage direction has progressed to some extent, so that the table body 5 can be stored easily. It has become.

  Next, the switching device for switching between the state in which the table main body 5 is completely housed in the support base 4 and the state in which a part (the handle portion 5D) protrudes to the outside by the push operation described above with reference to FIGS. The configuration of 20 will be described. As shown in FIGS. 32 to 33, the switching device 20 brings the table main body 5 into the support base 4 completely by pushing the table main body 5 into the support base 4 from the side. Alternate operation type switch structure that can be switched alternately between a concave state (see FIG. 36) and a convex state (see FIG. 38) that pushes back so that the table body 5 partially protrudes outside the support base 4. It is the composition provided with.

  As shown in FIG. 5, the switching device 20 is integrally fastened to the front end portion of the rail 12 inside the support base 4 by two bolts 19 </ b> A together with the above-described leg portion on the front end side of the guide plate 19. It is provided as a state. Specifically, the switching device 20 is set on the front end portion of the rail 12 described above, and the front end portion of the guide plate 19 is applied to the front end portion of the rail 12 from the lower side. The two bolts 19 </ b> A are inserted from the lower side and fastened to be fixed together with the guide plate 19 at the front end of the rail 12.

  As shown in FIGS. 11 and 36, the switching device 20 receives the table body 5 on the upper surface thereof when the table body 5 is completely pushed into the support base 4, and the front end of the table body 5. The outer corner portion on the side is supported from the lower side. With this support, the switching device 20 supports the front end portion of the table body 5 in the stored state from below so as not to hang down due to its own weight.

  As shown in FIG. 32 (a), the switching device 20 is partly (handle portion 5D) while the table body 5 is housed in the support base 4 by the storage operation from the unfolded and used area described above. ) Is left as a state of projecting to the outside (partially projecting state) so that the projecting part (handle portion 5D) is pushed into the support base 4 as shown in FIG. By performing the push operation, the push operation is performed in such a manner that it is pushed by the outer corner of the table body 5. As a result, the switching device 20 is switched to a recessed state in which the table body 5 is retracted to a position where it can be completely stored in the support base 4 as shown in FIG.

  33A, the table main body 5 faces the slit 4B of the support base 4 from the state where the table main body 5 is stored in the storage position as shown in FIG. By pushing the lateral side portion (the handle portion 5D) on the front end side of the head 5 into the slit 4B, it is operated as if it is pushed by the outer corner portion of the table body 5 in the same manner as described above. As a result, the switching device 20 is in a convex state in which the table body 5 is largely pushed back to a position where a part of the table body 5 (the handle portion 5D) protrudes outside the support base 4 as shown in FIG. And can be switched. In this way, the switching device 20 operates to push the lateral side portion on the front end side of the table body 5 into the support base 4, so that each time the operation is performed, the above-described concave state and convex state are changed. (Alternate operation type switch structure).

  As shown in FIG. 34 to FIG. 35, specifically, the switching device 20 described above, specifically, a guide rail 21, a locking wall 22 that is integrally fixed to the guide rail 21, and a slide that slides on the guide rail 21. A structure having a base 23, a push latch 24 having an alternate operation type switch structure provided inside the slide base 23, and a compression spring 25 provided between the support base 4 and the locking wall 22; It has become.

  The guide rail 21 is formed in a long plate shape having an L-shaped cross section, and two guide grooves 21A extending in the longitudinal direction are formed on the seating surface, and also extending in the longitudinal direction on the standing wall surface. One guide protrusion 21B is formed. Each guide groove 21 </ b> A described above is formed to extend from an intermediate position in the vicinity of one end side in the longitudinal direction on the seating surface of the guide rail 21 to a position opening to the other end side.

  The locking wall 22 is formed in a plate shape having an L-shaped cross-section that is different in direction from the above-described guide rail 21, and its seat plate portion is on the side where the two guide grooves 21 </ b> A of the above-described guide rail 21 are opened. The guide rail 21 is fitted from the end. Specifically, the locking wall 22 has two fitting protrusions 22A that are fitted in the two guide grooves 21A of the guide rail 21 in the sliding direction on the bottom surface portion of the seat plate. Is formed, and the edge portion on one side of the seat plate is fitted into the slide rail 21 under the guide protrusion 21B of the guide rail 21 by being fitted by the above-mentioned slide so as to be prevented from being peeled off. As a result, the locking wall 22 slides the fitting protrusions 22A into the guide grooves 21A of the guide rail 21 so that the edge portion on one side of the seat plate described above is the guide rail 21. As a state in which the guide wall 21B has entered the lower side of the guide protrusion 21B and is prevented from being peeled off, the standing wall portion is assembled in a state where the standing wall portion is in contact with and locked to the standing wall portion of the guide rail 21.

  The locking wall 22 is assembled in a state where it rides on the upper portion of the guide rail 21 as described above, and then, the two bolts 21C are inserted from the lower side of the guide rail 21 so as to pass through the standing wall portion and fastened. As a result, the guide rail 21 is integrally fixed. The locking wall 22 is formed with a locking arm 22 </ b> B that protrudes in the direction of insertion into the guide rail 21 described above at the central portion of the standing wall. A claw portion 22C that is inserted into and coupled to a fixed side latch 24B of a push latch 24, which will be described later, is formed at the tip of the locking arm 22B.

  The slide base 23 is fitted and mounted in a slidable state on the guide rail 21 before the locking wall 22 described above is assembled to the guide rail 21. Specifically, the slide base 23 is formed with two slide protrusions 23E fitted in the slide direction in the two guide grooves 21A of the guide rail 21 described above on the bottom surface portion thereof, and on one side thereof. A slide groove 23 </ b> F that can receive in the slide direction the guide protrusion 21 </ b> B formed on the standing wall surface of the guide rail 21 described above is formed in the side surface portion so as to penetrate in the longitudinal direction. As a result, the slide table 23 is fitted in the slide grooves 23A of the guide rails 21 in the guide grooves 21A in the sliding direction, and the guide protrusions 21B of the guide rails 21 are received in the slide grooves 23F. By doing so, the guide rail 21 is mounted in a state in which the guide rail 21 is prevented from being peeled off and is slidable in the longitudinal direction.

  The slide table 23 described above is formed on the guide rail 21 between a position where each of the slide protrusions 23 </ b> E described above hits the end of each guide groove 21 </ b> A of the guide rail 21 and a position where the slide protrusion 23 </ b> E hits the locking wall 22. You can slide against it. As shown in FIG. 36, the slide table 23 described above is in a state in which the table main body 5 is supported from below by receiving the table main body 5 on the top plate surface 23A in the sliding direction to a position where it hits the push wall 23B. Become. Then, the slide base 23 further pushes the table body 5 toward the inside of the support base 4 from this state as shown in FIG. It is designed to slide toward. Then, the slide base 23 is configured to push the table main body 5 back to the partially protruding position by the push wall 23B as shown in FIG. 38 by releasing the push operation after sliding.

  As shown in FIG. 34, the slide table 23 is formed with an opening 23C in which a push latch 24 (to be described later) can be inserted and mounted on the side surface. Further, the top plate surface 23A of the slide base 23 is formed with an insertion port 23D penetrating in a slit shape communicating with the above-described opening 23C. The insertion port 23D is a port for inserting a long plate-like lid plate 23G from the upper side after the push latch 24 is inserted and mounted in the above-described opening 23C. The lid plate 23G inserted into the insertion port 23D is held in a state where it is dropped into the opening 23C and the opening 23C is covered. The lid 23G dropped into the opening 23C is fixed to the slide base 23 with the bolt 23G1 so that the push latch 24 does not fall out of the opening 23C. The opening 23C is held in a covered state.

  The slide base 23 is assembled to the guide rail 21 after the locking wall 22 is assembled to the guide rail 21 so that the slide base 23 is prevented from falling off the guide rail 21. Become. At the time of the assembly, the locking wall 22 is assembled to the guide rail 21 with the compression spring 25 being passed through the locking arm 22B. As a result, the compression spring 25 is assembled in a state of being sandwiched between the standing wall portion of the locking wall 22 and the slide base 23, and is always separated from the lock wall 22 with respect to the slide base 23. It is set to a state where the spring force is applied.

  The slide base 23 is mounted inside the slide base 23 by being pushed toward the lock wall 22 against the urging force of the compression spring 25 after the lock wall 22 is assembled to the guide rail 21. The fixed latch 24B of the push latch 24 is hooked on a claw portion 22C formed at the tip of the locking arm 22B of the locking wall 22 and is integrally coupled. By this connection, the slide base 23 is in a state in which the fixed side latch 24B of the push latch 24 mounted therein is fixed integrally with the locking wall 22 and the guide rail 21, and is fixed to the fixed side latch 24B. It slides integrally with the movable side latch 24A.

  As shown in FIG. 38, the slide table 23 is locked by the above-described urging force of the compression spring 25 so that the slide protrusions 23E formed on the bottom surface thereof abut against the end portions of the guide grooves 21A of the guide rails 21. By being pushed out to a position where it is pushed out, it becomes a convex state in which a part of the table main body 5 is pushed out to a position (partially protruding state) that protrudes outside the support base 4. Further, as shown in FIG. 37, the slide table 23 is pushed from the side and pushed toward the locking wall 22 from the side as shown in FIG. When the push operation of the table body 5 is released, the table body 5 is switched to the recessed state that keeps the table body 5 completely stored in the support base 4 without substantially pushing back the table body 5 as shown in FIG. It is like that.

  Further, the slide table 23 is moved from the concave state shown in FIG. 36 to the table main body 5 by being pushed again from the side and pushed toward the locking wall 22 as shown in FIG. The internal push latch 24 functions to switch to the convex state in which the table body 5 is pushed back to the position where the table body 5 is partially returned as shown in FIG. 38 when the push operation of the table body 5 is released. Yes. In this way, each time the table body 5 is pushed, the slide base 23 functions alternately and repeatedly switches between the concave state shown in FIG. 36 and the convex state shown in FIG. It is supposed to be.

  Next, the internal structure of the push latch 24 will be described. As shown in FIGS. 34 to 35 and FIGS. 39 to 40, the push latch 24 is assembled in a slidable state inside the movable side latch 24 </ b> A and a box-shaped movable side latch 24 </ b> A that is partially open. The fixed side latch 24 </ b> B and a compression spring 24 </ b> C assembled between them are configured. As shown in FIGS. 34 to 36, the movable side latch 24 </ b> A is attached to the inside of the slide table 23, thereby being assembled in a state of being integrally coupled with the slide table 23. . As shown in FIGS. 39 to 40, the movable side latch 24A is provided with a lateral slide pin 24A1 that is slidable only in a direction perpendicular to the sliding direction of the movable side latch 24A.

  The fixed side latch 24B is assembled to the inside from the opening of the movable side latch 24A and is engaged with the movable side latch 24A so as to be slidable in and out of the movable side latch 24A. The compression spring 24C is provided in a state of being pressed between the surfaces of the fixed side latch 24B and the movable side latch 24A facing each other in the sliding direction, and is always fixed to the movable side latch 24A. It is assumed that a spring force is applied in a direction away from the spring.

  Further, the above-described fixed side latch 24B receives the lateral slide pin 24A1 provided on the above-described movable side latch 24A, and guides the movement of the lateral slide pin 24A1 as the movable side latch 24A slides. Is provided. The guide structure 24B1 has a so-called heart cam type guide structure, and the first locking wall portion 24B1a and the third locking wall portion 24B1c forming two continuous mountain-shaped inclined surfaces, and the gap between these peaks. The second locking wall portion 24B1b that forms a valley-shaped inclined surface that is opposed to the first locking wall portion 24B1a that is positioned below the top of the peak of the above-described third locking wall portion 24B1c. And a return wall portion 24B1d that forms a straight inclined surface that goes down to a position beyond the top of the mountain.

  As shown in FIG. 39A, the guide structure 24B1 described above has a lateral side of the movable side latch 24A when the movable side latch 24A is in a protruding state, that is, when the slide base 23 described above with reference to FIG. The slide pin 24A1 is held by being guided by a return wall 24B1d, which will be described later, in a state where the slide pin 24A1 is positioned in a region closer to the right side of the figure than the peak of the first locking wall 24B1a. As shown in FIG. 39 (b), the guide structure 24B1 is configured such that the movable side latch 24A is pushed from the above state and pushed into the fixed side latch 24B, so that the lateral slide pin 24A1 is moved to the first locking wall. The side slide pin 24A1 is brought into contact with the slope on the right side of the mountain of the part 24B1a and is slid to the left side in the drawing toward the top of the mountain to be locked. Accordingly, the push operation toward the fixed side latch 24B of the movable side latch 24A is locked.

  Then, as shown in FIG. 39 (c), the guide structure 24B1 is released from the above-described push operation, and the movable side latch 24A is pushed back downward in the figure by the urging force of the compression spring 24C. 24A1 is brought into contact with the inclined surface on the right side of the valley of the second locking wall portion 24B1b, and the lateral slide pin 24A1 is slid toward the left side in the drawing toward the top of the valley to be locked. Thus, the movable side latch 24A is held in a state where it is pushed in almost without being pushed back, that is, in a state where the slide table 23 described above with reference to FIG.

  Here, the peak of the valley of the second locking wall portion 24B1b is on the left side of the figure with respect to the vertex between the peak of the first locking wall portion 24B1a and the peak of the third locking wall portion 24B1c. It is the structure formed in the position shifted | deviated. As a result, the guide structure 24B1 is moved from the state in which the lateral slide pin 24A1 is received and locked to the above-described second locking wall portion 24B1b, as shown in FIG. 40 (a), to FIG. 40 (b). As shown, the movable side latch 24A is pushed again and pushed into the fixed side latch 24B, so that the lateral slide pin 24A1 is brought into contact with the slope on the right side of the mountain of the third locking wall portion 24B1c. The slide pin 24A1 is slid toward the left side of the figure toward the top of the mountain and locked. As a result, the push operation of the movable side latch 24A toward the fixed side latch 24B is locked.

  Then, as shown in FIG. 40C, the guide structure 24B1 is released from the above-described push operation, and the movable side latch 24A is pushed back downward in the figure by the urging force of the compression spring 24C. 24A1 is brought into contact with the inclined surface of the return wall portion 24B1d, and the horizontal slide pin 24A1 is moved to the original position shown in FIG. 39A (a region on the right side of the peak of the first locking wall portion 24B1a). Slide it back. By the above operation, the movable side latch 24A is largely pushed back, and the slide table 23 is pushed into the convex state described above with reference to FIG.

  As described above, the table Ta according to the present embodiment includes a state (stored state) in which the table body 5 is completely stored inside the support table 4 by an operation performed from the outside of the support table 4 (storage body) and a part thereof. The switching device 20 can be switched between a state in which the (handle portion 5D) protrudes to the outside of the support base 4 (partially protruding state). A state in which the table body 5 is compactly accommodated up to the handle portion 5D inside the support base 4 by the switching device 20, and a partially projecting state in which the handle portion 5D protrudes to the outside of the support base 4 and can be expanded. It becomes possible to switch to. These switching operations can be easily performed by operations performed from the outside of the support base 4. Therefore, the table body 5 can be pulled out to the outside without putting a hand into the support table 4 while the table body 5 can be completely stored in the support table 4. The operability of unfolding the table main body 5 can also be improved while enhancing the stowability of the table 5.

  Further, the table body 5 is configured to be housed in the support base 4 in an inclined state by rotation in a diagonally downward direction. The switching device 20 is provided inside the support base 4 and is in a recessed state in which the table body 5 can be received to the housed state by the operation of pushing the table body 5 in the housed direction. It is an alternate operation type switch structure that is in a convex state that can be pushed out to the part protruding state.

  With such a configuration, the table body 5 of the type stored in the above-described slanting downward direction is brought into a storage state and a partially protruding state by the switching device 20 having a simple structure with an alternate operation type. By switching appropriately, each state can be stably held. That is, the table body 5 can be stably held in the housed state and the partially protruding state by the gravitational action in which the table body 5 is housed obliquely downward. Further, since the pushing direction of the table body 5 by the switching device 20 is an oblique direction, the table body 5 can be pushed out from the housed state toward the partially protruding state with a relatively light force, and the repulsive force of the switching device 20 can be increased. It can be set relatively weak. Therefore, the force required to push the table body 5 from the partially protruding state to the stored state can be made relatively light, and the storing operation can be further simplified.

  Further, the table body 5 has a structure in which one end is connected to the table moving device 10 and is supported in a cantilevered manner, and the switching device 20 is applied to the other end from the lower side in the housed state, thereby supporting the table. 4 is supported in a state where both ends are supported. With this configuration, the table main body 5 can be supported at both ends by the switching device 20 when the table main body 5 is in the housed state, and the table main body 5 is weighted by utilizing the configuration of the switching device 20. It can be supported in a state with a small bending load.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the “vehicle table” of the present invention can be applied to seats used for various railway vehicles, as well as vehicles other than railways such as automobiles, and other vehicles such as airplanes and ships. It can be widely applied to a sheet to be used.

  Further, as shown in FIG. 41, the “vehicle table” of the present invention is a development in which the table main body 5 ′ is vertically moved in and out of the storage body 4 ′ (base) provided next to the seat 1 ′. It may be a table Ta ′ having a storage structure. Specifically, the table Ta ′ has a table body 5 ′ that is hinged so that it can be rotated up and down by a table moving device 10 ′ with respect to a storage body 4 ′ provided next to the seat 1 ′. It is in a state provided so that it can be taken in and out. In the storage body 4 ′, a switching device 20 ′ having the same alternate operation type switch structure as the switching device 20 ′ shown in the first embodiment is provided, and a lid on the top of the storage body 4 ′ is provided. Each time a push operation is performed to open 4A ′ and push the table body 5 ′ into the housing 4 ′, the table body 5 ′ is completely housed in the housing 4 ′ (stored state), and the table body It can be switched to a state (partially projecting state) in which a part of 5 ′ (the handle portion 5D ′) is projected outside the housing 4 ′. Accordingly, the table body 5 ′ can be easily pulled out to the outside without putting a hand into the storage body 4 ′ while the table body 5 ′ can be completely stored in the storage body 4 ′. In addition, the operability of unfolding the table body 5 ′ can be improved while enhancing the stowability of the table body 5 ′.

  The table main body 5 ′ is stably held at the position stored by its own weight when the table main body 5 ′ is completely stored in the storage body 4 ′. Then, the table body 5 ′ has the upper surface of a part (the handle portion 5D ′) exposed on the upper surface portion of the storage body 4 ′ from the state stored in the storage body 4 ′. By performing a push operation so as to be pushed into the inside, it is pushed back upward by the switching device 20 ′ and switched to a partially protruding state. The table main body 5 ′ is held horizontally at a position on the front side of the seated person by tilting the table main body 5 ′ inside the seat after gripping the partially protruding handle portion 5D ′ and lifting it upward. It can be switched to a state in which it can be used as a small item by falling into the posture state.

  In addition, the “switching device” of the present invention switches between the storage state of the table main body by an operation performed from the outside of the storage body and the partially protruding state in which the handle portion protrudes to the outside of the storage body. Any switching structure may be used, and the above switching operation may be performed by providing a separate operation means such as a push button instead of pushing the table body. The above operation may be performed by an operation other than the push-in operation, such as a handle rotation operation or a knob operation.

1, 1 'seat 2 seat back 3 seat cushion 4 support base (base, storage body)
4 'storage body (base)
4A 'cover 4A armrest 4B slit 4C inner surface Ta, Ta' table 5, 5 'table body 5A table piece 5A3 overhang 5A4 inclined surface 5B table piece 5B3 inclined surface 5B4 rib 5B5 magnet 5B6 rubber 5C hinge 5D, 5D handle 5D, 5D Part 10, 10 'Table moving device 10A Slide mechanism 10B Rotation mechanism in width direction 10C Rotation mechanism in height direction 10D Adjustment mechanism 11 Fixed frame 11X Outer inclined upright surface portion 11Y Inner vertical upright surface portion 11Z Inner inclined upright surface portion 11A First guide bracket 11A1 bolt 11B second guide bracket 11B1 bolt 11C guide cap 12 rail 12A bolt 12B opening 13 slider 13A bearing 13B bearing 13C resin shoe 13D cover 14 helper 4A stay 14B resin shoe 14C cover 15 winding device 15A wire 15B bolt 16 base plate 16A stopper 16B screwing part 16B1 adjustment bolt 16C bolt 16D stud bolt 16D1 bolt 16E bushing 16F nut 16G side cover 16G1 bolt 16H1 bolt 16H1 bolt 16H1 bolt 16H1 Lock plate 17A Long hole 17B Retraction hole 17B1 Side surface 17C Receiving surface 18 Rotating arm 18A First connecting pin 18B Second connecting pin 18C Cam follower 18C1 Cap 18C2 Bushing 18D Connecting link 18E Slide plate 18E1 Locking pin 18E2 Rack teeth 18F Locking projection 18F Plate 18H Lid cover 18J Damper 18J1 Pinion 19 Guide plate 9A bolt 19B guide hole 19B1 lock groove 19B2 unfolding guide surface 19B3 storage guide surface 19B4 step surface 20, 20 'switching device 21 guide rail 21A guide groove 21B guide projection 21C bolt 22 locking wall 22A fitting convex portion 22B locking arm 22C Claw 23 Slide base 23A Top plate surface 23B Push wall 23C Open 23D Insert 23E Slide projection 23F Slide groove 23G Cover plate 23G1 Bolt 24 Push latch 24A Movable side latch 24A1 Lateral slide pin 24B Fixed side latch 24B1 Guide structure 24B1a First engagement Stop wall portion 24B1b Second locking wall portion 24B1c Third locking wall portion 24B1d Return wall portion 24C Compression spring 25 Compression spring

Claims (2)

A vehicle table,
A table body to be used for carrying objects,
A table moving device for connecting the table body to the base so that the table body can be unfolded and stored,
The table moving device has a part of the table main body as a handle portion, the table main body stored in the storage body provided in the base up to the handle portion, and the table main body is pulled out from the storage body. It is configured to deploy and store between the expanded state,
And a switching device capable of switching between the stored state and a partially protruding state in which the handle portion protrudes outside the storage body by an operation performed on the table body from the outside of the storage body ,
The table body is configured to be stored inside the storage body in a posture inclined by rotation in a diagonally downward direction,
The switching device is provided on the base and is in a recessed state in which the table main body is received to the stored state by an operation of pushing the table main body in the storage direction, and the table main body protrudes partially by the pressing operation again. the convex state can be extruded to a state, the vehicle table characterized that you have a switch structure of alternate operation type. The vehicle table according to claim 1,
The table body has a structure in which one end is connected to the table moving device and is supported in a cantilevered manner, and the switching device is applied to the other end from the lower side in the retracted state, so that the base is attached to the base. On the other hand , the vehicle table is configured to be supported in a state where both ends are supported .

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