JP6140558B2 - Vehicle seat table - Google Patents

Description

  The present invention relates to a vehicle seat table. More specifically, the present invention relates to a vehicle seat table including two table pieces which are hinged to each other and can be folded.

  2. Description of the Related Art Conventionally, in a vehicle seat, a configuration is known that includes a foldable table in which two table pieces are connected to each other by hinges (Patent Document 1). Specifically, in the above-mentioned table, both the two table pieces are folded from each other in a horizontal state where the table pieces are overlapped with each other by placing a finger on the upper table piece and opening and rotating the table piece around the hinge. The table pieces are spread out in a state where the surfaces are connected to each other in the horizontal direction.

Japanese Utility Model Publication No. 63-81734

  However, in the above prior art, when the upper table piece is opened, the edges of the two table pieces overlap each other. It is a bad composition. The present invention has been developed to solve the above-described problems, and the problem to be solved by the present invention is to facilitate the operation of expanding a table that can be folded in two.

In order to solve the above problems, the vehicle seat table of the present invention takes the following means.
A first invention is a vehicle seat table including two table pieces hinged to each other and foldable. The two table pieces are configured to be unfolded by being operated so that the table piece on one side is opened from the folded state with the table piece on the other side. The one-side table piece, in the folded state with the other-side table piece, projects outwardly from the other-side table piece and makes it easy to put a finger to open the one-side table piece; A smooth portion that loosens and smoothes a step between the edge surface of the table piece on the other side formed by the protruding shape.

  According to the first aspect of the invention, since the table piece on one side has a shape having the overhanging portion, a finger is applied to the overhanging portion and a force in the opening operation direction is applied only to the table piece on the one side. Can be done easily. Therefore, the table expansion operation can be easily performed. In addition, since the protruding portion has a shape in which a step between the edge portion of the table piece on the other side is loosened by the smooth portion, the protruding portion has a good finger contact shape, and the unfolding operation of the table is further improved. It can be made simple.

  The second invention is the following configuration in the first invention described above. The two table pieces are configured to be folded and stored in a posture inclined obliquely outward and downward inside the storage body provided on the outer side portion of the vehicle seat, and the overhang portion when stored And the edge surface of the table piece on the other side are provided so as to be exposed to the vehicle seat side through a slit formed in the inner wall of the storage body. The overhanging portion exposed from the slit and the edge surface of the other table piece are inclined so as to form a flush surface with the inner wall surface facing the vehicle seat of the storage body.

  According to the second aspect of the invention, the two table pieces are arranged obliquely inside the storage body and are stored in a folded state, whereby the table is placed in the storage body in the sheet width direction. Can be stored compactly in the height direction. Further, even when the table is disposed obliquely as described above, the overhanging portion exposed from the slit of the storage body and the edge surface of the other table piece face each other with the inner wall surface facing the vehicle seat of the storage body Since the surface is inclined so as to form a single shape, it can be provided in a state in which these are attractively exposed from the slit.

FIG. 3 is a perspective view illustrating a state in which the sheet table of Embodiment 1 is stored. It is a perspective view which shows the state by which the table was pulled out by the front center of the sheet | seat. It is a perspective view which shows the state by which the table was dropped in the horizontal attitude | position. It is a perspective view which shows the state by which the table was opened from the folded state. 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 showing the connection structure of a table and a rotation arm. It is the top view which showed the structure of the table in the state in which the table was accommodated, and the table moving apparatus. It is the same side view. It is the same front view. It is the perspective view seen from the seat front inner upper part. It is the perspective view seen from the seat back outside upper part. It is the top view which showed the structure of the table of the state by which the table was expand | deployed, and a table moving apparatus. 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. It is a disassembled perspective view of a rotation arm. It is the side view which showed a mode that a table rotated with respect to a rotation arm. It is the XXVIII-XXVIII sectional view taken on the line of FIG. It is the top view which showed the movement guide structure of the table by a guide plate. It is sectional drawing which showed the rotation lock structure of the table by a lock plate.

  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 5 of the first embodiment is applied will be described with reference to FIGS. As shown in FIG. 1, the seat 1 of this embodiment is configured as a special 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 serving as an armrest on the upper surface.

  The support 4 is provided on both the left and right sides of the seat cushion 3 and is formed in a box shape extending to a position higher than the seat cushion 3, and is integrally coupled to each side portion of the seat cushion 3. It is in a state that is provided. A cushion material is provided on the upper surface of each of the support bases 4, and an armrest 4A that can support both elbows of a seated person with appropriate softness is formed. Of the support bases 4, the seat occupants are used in a timely manner in front of themselves in the inside of the support base 4 shown on the right side when viewed from the seated person. The table 5 that can be accommodated is stored in a folded state. Here, the support table 4 in which the table 5 is stored corresponds to the “storage body” of the present invention.

  The table 5 is housed in a state where the table 5 is folded in a long shape in the front-rear direction of the seat and is stored in the above-described support table 4 with the surface inclined obliquely downwardly outward. In the storage state described above, the table 5 has grip portions 5A1 and 5B1 formed on the inner edge of the sheet on the front end side, and the slits 4B formed on the side surface on the inner side of the sheet of the support 4 to the inner side of the sheet. It is overhanging and exposed. Here, the slit 4B is formed in a shape extending straight across a wide area in the front-rear direction of the seat on the side surface inside the seat of the support base 4, and is housed inside the support base 4 inside thereof. It is in the state which faced the edge surface (inclined surface 5A4, 5B3 mentioned later) of the table 5.

  The handle portions 5A1 and 5B1 are formed at the inner edge of each of the table pieces 5A and 5B of the above-described folded table 5, and the table 5 is folded in two so as to be in the height direction. It is made into the state formed in the position superimposed on. Here, the table piece 5A corresponds to “one side table piece” of the present invention, and the table piece 5B corresponds to “other side table piece” of the present invention. The above-described handle portions 5A1 and 5B1 have groove portions 5A2 through which the user can put their fingers between the opposite upper and lower surfaces so that the user can pinch these handle portions 5A1 and 5B1 with their fingers. 5B2 is formed so as to be recessed (see FIGS. 5, 7, and 11 to 14). Further, as shown in FIG. 5, a finger can be hung on the front edge on the right side of each of the handle parts 5 </ b> A <b> 1 and 5 </ b> B <b> 1 when the table 5 is stored inside the support base 4. Concave portions 5A1a and 5B1a are formed. These concave portions 5A1a and 5B1a make it easy to apply a pressing force to the rear side by placing a finger on the concave portions 5A1a and 5B1a from the front side when the table 5 is folded in two and pushed toward the storage position. It comes to function as a thing.

  The table 5 is operated so that a seated person puts his / her hands into the groove portions 5A2 and 5B2 of the handle portions 5A1 and 5B1 protruding from the slit 4B of the support base 4 and pulls the handle portions 5A1 and 5B1 toward the front side. As shown in FIG. 2, it is pulled out in the form of a circular arc that is slanted upward toward the inside of the front of the seat, and is deployed in a longitudinal direction in the seat width direction at a position in front of the seated person. It is like that. Then, as shown in FIG. 3, the table 5 is tilted obliquely upward as described above by pulling the handle portions 5A1 and 5B1 described above to the maximum position where the rotation in the retracting direction is locked. It is dropped from the posture state to the use position state in which it becomes a horizontal posture by its own weight.

  As a result of the depression, the bottom surface of the table 5 on which the table 5 is dropped is placed on a part of the support 4 on the right side (left side in the figure) as viewed from the seated person, and is supported by the support 4 on both the left and right sides. While being supported by the state of the horizontal posture, the above-described retracting direction and the rotational movement in the opposite direction are locked. And the table 5 will be in the state which can use the upper folded-up top plate | board surface as an accessory stand by this.

  Further, the table 5 is arranged such that the seat occupant lowers the upper table piece 5A folded in half from the use position state (the state shown in FIG. 3) of the horizontal posture deployed at the position in front of the seat occupant. By operating the side table piece 5B so as to open from the near side to the front side, as shown in FIG. 4, the table pieces 5A and 5B are flush with each other in the front-rear direction (horizontal direction). It is designed to be spread out in a connected state. Thereby, the table 5 will be in the state which can use the top plate surface of both the extended table pieces 5A and 5B widely as an accessory stand.

  Further, the table 5 is opened even in the above-described folded state (see FIG. 3) in the state where the table 5 is unfolded in the use position of the horizontal posture at the position in front of the seated person as described above. Even if the seat is in a state (see FIG. 4), the seated person pushes and pulls it in the front-rear direction, so that the deployed use position is within a certain range in the front-rear direction (within the use region described later). ) Can be adjusted. Specifically, the adjustment operation of the use position of the table 5 is performed by the operation of the slide mechanism 10 </ b> A of the table moving device 10 that moves the table 5 from the storage position inside the support base 4. .

  The sliding mechanism 10A has a retracted position (see FIG. 1) in which the table 5 is folded in two and housed in the support base 4 and a deployed position (see FIG. 1) in an oblique posture state in front of the seated person. 2) and the front of the table 5 beyond the unfolded storage area in the use position state (see FIG. 3) in which the table 5 is dropped from the unfolded position (see FIG. 2) to the horizontal position. It is configured to be able to move in the front-rear direction between the use area that allows the position of the side movement area to be adjusted in the front-rear direction.

  The slide mechanism 10A rotates the table 5 in the width direction in an unfolded storage area where the table 5 is unfolded and stored between the storage position (see FIG. 1) and the unfolded position (see FIG. 2) by an interlocking structure to be described later. In the state where the table 5 is deployed in the horizontal position of the use position (see FIG. 3), the table 5 is moved independently to change the use position of the table 5. It can be adjusted in the front-rear direction. When the table 5 is deployed in the use position state in the horizontal posture, the slidable range in the front-rear direction is restricted within a use region described later by a restriction structure described later.

  Thus, even if the table 5 can be slid in the front-rear direction across the development storage area and the use area by one slide mechanism 10A, the table 5 is brought into the use position state in the horizontal posture in the use area. When it is used, the movement is restricted to within the use area, so that it is easy to use. The slide mechanism 10A is positioned in the front-rear direction by a force by which a seated person pushes and pulls the table 5 within the use region, and the sliding frictional force of the slide mechanism 10A at each pushed and pulled position. Is held in a fixed position.

  The table 5 was stored in a folded state in a folded manner in the right side of the support base 4 shown in the figure when viewed from the seated person by performing a storing operation in the reverse order of the unfolding operation. It is supposed to be returned to the state. Specifically, in the table 5, the table piece 5A on the back side is overlaid on the upper side of the table piece 5B on the near side from the state in which the top plate surfaces of both table pieces 5A and 5B shown in FIG. By performing the closing operation as described above, both the table pieces 5A and 5B are returned to the folded state as shown in FIG.

  Then, the table 5 is tilted to a slanted posture in which the seat occupant lifts the table 5 upward and is lifted to the maximum position where the movement of the lifting is restricted. By being lifted up, as shown in FIG. 2, it is switched to a state in which the storage rotation in the width direction returning to the inside of the support base 4 described above is possible. Then, the table 5 is operated so that the seated person pushes it toward the inside of the support base 4 toward the left rear side (right rear side in the drawing), as shown in FIG. Is pushed toward the rear rear side of the seat in a diagonally arcuate manner, and is returned to and stored in the support base 4 in a state where the surface is inclined obliquely outward and downward.

  As described above, the table 5 can be operated by a simple operation by simply rotating in an oblique direction, when the table 5 is unfolded from the support table 4 or stored in the support table 4. ing. However, in reality, the table 5 is moved away from the support base 4 described above by a motion that draws a complicated movement locus in which the slide in the front-rear direction and the rotation in the width direction (diagonal direction) are combined. The range of movement is efficiently moved in a small moving space.

  In addition, the table 5 performs a storage operation for returning the storage position (see FIG. 1 to FIG. 1) from the use position (see FIGS. 3 to 4) deployed in the horizontal posture state to the storage position (FIG. 1) in the support base 4. It can be easily performed from any position with the same operational feeling. Specifically, the table 5 is lifted from any position in the use area by the interlocking structure in which the slide mechanism 10A of the table moving device 10 and the rotation mechanism 10B in the width direction are interlocked with each other. Even so, it is guided so as to be returned to the same storage position inside the support base 4 by one operation.

  Hereinafter, the configuration of the table 5 described above and the table moving device 10 for deploying and storing the table 5 and adjusting the position thereof will be described in detail. In the following description, when the position state of the table 5 is expressed as “storage position”, the table 5 is stored in the support base 4 shown in FIG. 1 and expressed as “deployment position”. 2 represents a state in which the table 5 is deployed in a posture inclined obliquely upward to the right as shown in FIG. 2, and when expressed as “use position”, the table 5 is dropped into the horizontal posture state shown in FIG. Represents a state. When the table 5 is expressed as “development storage area”, the table 5 represents an area where the table 5 is moved between the storage position shown in FIG. 1 and the expansion position shown in FIG. 2, and when expressed as “use area”. The table 5 is expanded to the use position shown in FIG. 3 and represents an area in which the position can be adjusted in the front-rear direction.

  First, the configuration of the table 5 will be described. As shown in FIG. 3 to FIG. 5, FIG. 7 and FIG. 25, the table 5 has table pieces 5A and 5B made of two horizontally long resin plates having substantially the same size. It is the structure connected so that it could be opened and closed in the direction. Thereby, the table 5 is a state in which each of the table pieces 5A and 5B is folded in two (see FIG. 3) and a state in which the two table pieces 5A and 5B are spread out in a single plane (see FIG. 4). And can be switched to two states.

  As described above with reference to FIGS. 3 and 4, the table 5 is folded in the above-described two-folded state when used in a state of use in a horizontal posture at a position in front of the seated person (see FIG. 3). 3) and a state in which the upper table piece 5A is spread out in a flush manner with respect to the lower table piece 5B. In the table 5, the two table pieces 5A and 5B are in a state where they are spread out to be flush with each other, so that the edges connected by the hinge connecting portions 5C come into contact with each other so that they are flush with each other. It is designed to be locked in an unfolded state.

  As shown in FIGS. 5, 7, and 14 to 18, strictly speaking, the above-described table 5 has a table piece 5 </ b> A that is located on the upper side when folded in a folded shape, rather than the lower table piece 5 </ b> B. Is formed in a shape having an overhanging portion 5A3 projecting outward. The overhang portion 5A3 is formed continuously and widely over the entire area of one side where the handle portion 5A1 of the upper table piece 5A is formed and a partial area of the two sides adjacent to the entire area. Is formed as an inclined surface 5A4 inclined downward. Here, the inclined surface 5A4 described above corresponds to the “smooth part” of the present invention.

  By the inclined surface 5A4, the step between the edge surface of the lower table piece 5B formed by the protruding shape of the protruding portion 5A3 of the upper table piece 5A is loosened and smoothed. The overhanging portion 5A3 allows the table 5 to touch only the upper table piece 5A by allowing the seated person to touch the front side edge and the left and right side edges of the table 5 folded in half. It can be made into the state made to do.

  Further, since the edge surface of the overhang portion 5A3 is an inclined surface 5A4 inclined downward, the edge surface (inclined surface 5A4) of the upper table piece 5A lifts the table piece 5A to the touched hand. In contact with the surface (the inclined surface 5A4 is in contact with the surface obliquely from the upper side). Accordingly, the table 5 is operated so that the occupant touches the above-described edge surface and lifts it upward, so that the upper table piece 5A is moved forward from the front side with respect to the lower table piece 5B. It can be operated easily to open. The overhang portion 5A3 and the inclined surface 5A4 described above are also formed in the region where the handle portion 5A1 of the upper table piece 5A is formed.

  On the other hand, the edge surface of the table piece 5B located below the overhanging portion 5A3 of the upper table piece 5A is also formed as an inclined surface 5B3 that is inclined flush with the inclined surface 5A4 of the overhanging portion 5A3. Yes. The inclined surface 5B3 is also formed in a region where the handle portion 5B1 of the lower table piece 5B is formed. As shown in FIGS. 1 and 14 to 18, the inclined surface 5A4 formed on the upper table piece 5A and the inclined surface 5B3 formed on the lower table piece 5B are folded in two. In the state of being folded and housed inside the support base 4, the surface shapes that are flush with each other form a surface in the same direction as the inner side surface 4 </ b> C that faces the inside of the seat of the support base 4. It is arranged so that. Accordingly, as shown in FIGS. 16 to 18, the table 5 includes an inner surface of the support table 4 such that the edge surfaces of the table pieces 5A and 5B facing the slit 4B of the support table 4 cover the slit 4B. The side surface 4C is flush with the side surface 4C.

  Further, as shown in FIGS. 14 to 15, the table 5 has the same inclined surface as the inclined surfaces 5 </ b> A <b> 4 and 5 </ b> B <b> 3 described above also in the handle portions 5 </ b> A <b> 1 and 5 </ b> B <b> 1 protruding from the slit 4 </ b> B to the inside of the sheet. By forming 5A4 and 5B3, the protruding edge surfaces (inclined surfaces 5A4 and 5B3) are in a state in which the surface is directed straight to the same sheet inner side as the inner side surface 4C of the support base 4. . As a result, each of the handle portions 5A1 and 5B1 of the table 5 is straight on the inner side of the seat even if the body (hand, finger, etc.) of the seated person hits the projected front surface (inclined surfaces 5A4 and 5B3). By the inclined surfaces 5A4 and 5B3 that face the surface, a soft structure that hits a seated person's body (hand, finger, etc.) is formed.

  Next, the configuration of the table moving device 10 for deploying and storing the table 5 and adjusting the position will be described with reference to FIG. The table moving device 10 includes a slide mechanism 10A that moves the table 5 in the front-rear direction of the sheet with respect to the support table 4, a width-direction rotation mechanism 10B that rotates the table 5 with respect to the support table 4 in the sheet width direction, The rotation mechanism 10 </ b> C in the height direction that rotates the table 5 in the height direction with respect to the support base 4 is configured.

  The table moving device 10 has a position between the storage position (the position shown in FIG. 1) and the deployment position where the table 5 is deployed in front of the seated person (the maximum position where the table 5 is deployed to the right shoulder: the position in FIG. 2). In the unfolding and storing area to be unfolded and stored between, the slide mechanism 10A and the rotation mechanism 10B in the width direction described above are configured to move in conjunction with each other. 5 can be efficiently deployed and stored in a small movement space while rotating a large movement range between the storage position and the development position described above obliquely in the width direction.

  Further, as shown in FIG. 3, the table moving device 10 expands the table 5 to the position where the rotational movement in the width direction is locked at the position in front of the seated person (the position in FIG. 2). By switching to a state in which the rotating mechanism 10C in the vertical direction can function, the table 10 can be lowered from the posture state in which the table 5 is inclined to the right shoulder to the use position state in the horizontal posture by the mechanism 10C. ing. Then, the table moving device 10 is switched to a state in which the above-described rotation mechanism 10B in the width direction cannot function by the operation of dropping the table 5 into the use position state in the horizontal posture, and uses the table 5 in the horizontal posture. It can be held in the state of being dropped into the position.

  In addition, the table moving device 10 sets the table 5 in the state where the table 5 is deployed to the use position in the horizontal posture, so that the use position in the horizontal posture developed by the slide mechanism 10A is set in the development storage area described above. Adjustment is possible in the front-rear direction within the range of the use area on the front side. As described above, the table moving apparatus 10 moves the table 5 in the front-rear direction between the storage position and the unfolded position by one slide mechanism 10A, or unfolds the table 5 in the horizontal position using position. The position can be adjusted in the direction.

  Hereinafter, the configuration of each part of the table moving apparatus 10 described above will be specifically described in detail. 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 5 in the front-rear direction 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 part of the slider 13. The lock plate 17 is a component for enabling the rotation of the rotary arm 18 to be locked at the unfolded position of the table 5, and is attached to the base plate 16 in a state where the mounting position in the rotational direction can be adjusted ( Adjusting mechanism 10D). The rotary arm 18 is provided so as to be rotatably connected to the base plate 16 via a stud bolt 16D, and is connected to the tip of the rotary arm 18 so that the table 5 can swing in the height direction. It is supposed to be in a state. A mechanism for rotating the rotating arm 18 relative to the base plate 16 constitutes a rotating mechanism 10B in the width direction that can rotate the table 5 in the width direction. Further, the table 5 can be rotated in the height direction by the mechanism connected in a state where the table 5 can swing in the height direction with respect to the rotary arm 18. A mechanism 10C is configured. The guide plate 19 is integrally fixed to the rail 12, and guides the movement of the cam follower 18 </ b> C attached to the rotary arm 18 by a guide hole 19 </ b> B (described later) formed in the upper surface portion of the guide plate 19. The movement of the rotary arm 18 and the movement of the slider 13 are linked to each other so that the movement of 5 is performed while drawing a locus within a predetermined range.

  Hereinafter, the specific configuration of each member described above will be described in 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, and its bottom surface is a support base. 4 is applied to the frame material inside 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 11 </ b> Y of the fixed frame 11 has a first guide bracket 11 </ b> A made of aluminum alloy that is bent into a crank-shaped cross section on the side surface inside the seat. The lower side piece is applied and is 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. The guide cap 11C is arranged 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 11C is provided below the table 5 in order to prevent the table 5 from being bent downward due to its own weight when the table 5 is deployed so as to protrude from the inside of the support base 4 to the inside of the seat. It is applied from the side and functions as a support member that supports the table 5 from below.

  Specifically, the guide cap 11 </ b> C strongly supports the table 5 from the lower side with a small contact area by being applied to the rib 5 </ b> B <b> 4, which is formed on the back surface of the table 5 so as to protrude in a streak shape. Be able to. By preventing the table 5 from being bent by the guide cap 11C, the bending load (moment M) input from the table 5 to the slide mechanism 10A is reduced, and the table 5 can be made smooth without increasing the sliding resistance of the slide mechanism 10A. Can be unfolded and stored.

  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. Depending on the shape of each edge, the slider 13 and the helper 14 which will be described later are fitted and assembled so as to be slidable in the longitudinal direction so as not to peel off.

  As shown in FIG. 21 to FIG. 22, the connecting surface portion at the center of the H shape that obliquely faces the upper side of the seat of the rail 12 described above from the region around the central portion in the length direction to the rear end portion, An opening 12 </ b> B is formed so as to penetrate through the slit shape. The opening 12B is for restricting 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, a stay 14A (see FIG. 22) attached to the lower part of the helper 14 is provided. 20) is passed through the inside, and the stay 14A comes into contact with the front end portion of the opening 12B by sliding in the deployment direction of the helper 14, so that the movement in the deployment direction of the helper 14 is stopped to the contact position. It has become.

  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, whereby the rail having an H-shaped cross section is assembled. The two shoulder portions of 12 are assembled in a state straddling the rail 12 so as to be sandwiched from both outer sides. As shown in FIGS. 20, 21, and 23, the slider 13 has metal bearings 13A and 13B on the back side of the upper surface portion of the inverted U-shaped cross section and the back side surface of the lateral side surface inside the seat, respectively. Each of the bearings 13A and 13B is formed between the shoulders of the H-shaped cross section of the rail 12 and the shoulders and legs on the inner side of the seat. In addition, it is fitted and assembled in a state in which it can roll in the sliding direction between the edge portions that protrude to the inner side of the seat.

  The slider 13 is formed in a shape in which the lower end of the lateral side surface portion outside the seat having a reverse U-shaped cross section is bent inward of the seat, and a rail between the bent lower end surface portion and the upper surface portion. 12 is assembled to the rail 12 so as to be in a state in which an edge protruding outside the sheet formed on the shoulder outside the sheet having an H-shaped cross section 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 to the edge portion of the rail 12 that protrudes to the outside of the seat from both sides in the height direction so that the edge portion is sandwiched in the height direction. With these resin shoes 13C, the slider 13 is assembled in such a manner that the slider 13 can be smoothly slid by the slidability of the resin while being squeezed in the height direction with high accuracy. . 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 both ends in the longitudinal direction are fixed by being attached to both ends of the slider 13 by bolts and attached to both ends in the front-rear direction and fixed. 13 is firmly connected integrally.

  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 the shape of the slider 13 extends from the slider 13 to the inside of the seat. Even when subjected to a bending load (moment M) around the rail 12 due to the cantilevered support of the table 5 (see FIG. 13) in the extended position, the resistance to sliding friction against the rail 12 is greatly increased. It is possible to slide smoothly without causing it. Specifically, the slider 13 described above has a structure in which the table 5 assembled on the upper surface thereof is supported in a cantilever form from the outside of the seat when unfolded, and a rail that is applied to the slider 13 along with the cantilever support. The bending load (moment M) around the front-rear direction in which 12 extends is strongly received by the rail 12 by the structural strength of the metal bearings 13A and 13B described above.

  More specifically, as shown in FIG. 23, the slider 13 cantileverly supports the table 5 (see FIGS. 13 to 14) from the outside of the seat so that the rail 12 extends in the front-rear direction (clockwise in the drawing). In response to the acting bending load (moment M), a particularly strong load in the compression direction is received at the abutting portion between the side surface near the table 5 and the rail 12. However, the slider 13 has a contact portion between the rail 12 and the lateral side surface near the table 5 that receives a strong load in the compression direction, and is configured by a metal bearing 13B having a high structural strength. The load of can be received strongly.

  In addition, the slider 13 receives the load (moment M) in the rotational direction associated with the cantilever support of the table 5, and the bearing 13 </ b> A fitted between the H-shaped shoulder portions of the rail 12 is applied to the rail 12. It can also be received strongly by being pressed in the width direction. As described above, the slider 13 has a structure in which the metal bearings 13A and 13B having high structural strength are disposed in a portion that is strongly subjected to a load (moment M) associated with cantilever support of the table 5. Thus, the load applied to the portion where the resin shoe 13C is disposed can be reduced, and the structure can be smoothly slid with respect to the rail 12 even when the load from the table 5 is received.

  Further, the bearings 13A and 13B and the resin shoes 13C described above are optimally arranged and provided in a space that is vacated by providing the slider 13 in a posture inclined obliquely upward and outward of the seat. Yes. Specifically, the bearings 13A and 13B that take a place in the structure are disposed in the spaces opened by opening the rails 12 having an H-shaped cross section obliquely upward on the outer side of the seat and opened, On the other hand, the resin shoe 13C is disposed in a space inclined obliquely downward (structural flexibility), so that the space on the lower side of the rail 12 can be effectively and widely opened. Thus, the bearings 13A, 13B and the resin shoes 13C are optimally arranged with respect to the rail 12 (so as not to overhang the shape).

  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 is urged by a urging force in a winding direction received from a winding device 15 described later. The slider 13 is configured to always apply an assist force in the unfolding direction that slides forward of the seat within a certain range. Specifically, the sliding range of the helper 14 with respect to the rail 12 is limited to a certain range so that the movement of the slider 13 is assisted in the expanding direction only within the moving region where the table 5 is expanded and stored. It has been configured.

  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 moves in the opening 12B of the rail 12 and can slide to the front side of the seat with respect to the rail 12 until the stay 14A comes into contact with the front end of the opening 12B and is locked. . Within the range in which the helper 14 is slidable in the front-rear direction with respect to the rail 12, the assist force in the unfolding direction can be applied to the slider 13 by applying a pressing force from the rear side of the seat. ing.

  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, it is assembled in a state straddling the rail 12 so as to sandwich both shoulder portions 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.

  The top surface portion of the helper 14 that protrudes from the outer sides of both shoulder portions of the rail 12 in the height direction and the bent surface portions on the lower end sides of the left and right lateral side portions are respectively made of resin. A resin shoe 14 </ b> B serving as a backlash filling member is integrally coupled and provided. 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. The resin shoes 14B are assembled so that the helper 14 can be smoothly slid by 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 14 </ b> B 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 to and attached to both ends of the helper 14. 14 in a state of being firmly and integrally coupled to 14. With the configuration in which the resin shoes 14B are loosely packed, the helper 14 can slide the slider 13 in the unfolding direction by appropriately pressing the slider 13 from the rear side of the seat.

  As shown in FIG. 8, the slider 13 that receives the assisting force in the deploying direction by the helper 14 is connected to the upper portion of the slider 13 in the state where the table 5 is stored in the storage position inside the support base 4. The cam follower 18 </ b> C of the arm 18 is held in the lock groove 19 </ b> B <b> 1 of the guide plate 19 so that sliding toward the front side of the seat is regulated. The slider 13 is operated so that the seated person pulls the handle portions 5A1 and 5B1 of the table 5 from the storage position to the inside of the seat, so that the cam follower 18C is removed from the lock groove 19B1 as shown in FIG. As shown in FIG. 22, it is slid to the front side of the seat in response to the assist force from the helper 14, and moves the table 5 to the unfolded position.

  Further, as shown in FIG. 22, the slider 13 slides to the end position (deployment position of the table 5) of the deployment storage area where the assist force by the helper 14 is applied, so that the assist force from the helper 14 is not received. It becomes a state and is locked by friction with the rail 12 at that position. The slider 13 is moved to an appropriate position by a manual operation in which the seat 5 pushes and pulls the table 5 in the front-rear direction in the use area where the table 5 is switched to the horizontal posture state beyond the area. When it is moved and released at each adjusted position, it is locked into that position by friction.

  As shown in FIGS. 5 and 9 to 12, the winding device 15 includes a wire 15 </ b> A that is in a state in which a spring force is applied in the winding direction. 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. 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 route is coupled to the bottom of the stay 14A of the helper 14 by the bolt 15B. It is in a state. 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 receives the urging force that moves the front of the seat. Yes.

  As shown in FIG. 5, the base plate 16 is made of a thick aluminum alloy material, applied to the upper surface of the slider 13 described above, and integrally fastened and fixed by a plurality of bolts 16C. Has been. 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 firmly by a bolt 16D1 inserted 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 and the nut 16F is screwed and fastened, so that 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 a member that is integrally attached to the base plate 16 in the rotation direction. However, the adjustment position of the rotation direction with respect to the base plate 16 is adjusted by the adjustment mechanism 10D described later. It can be done.

  The above-described base plate 16 has a stopper 16A capable of locking the rotational movement of the rotating arm 18 in the unfolding position at the unfolded position on the upper surface of the base plate 16 and the rotating direction of a lock plate 17 (described later) assembled to the upper portion of the base plate 16. And two screwing portions 16B to which adjustment bolts 16B1 capable of adjusting the assembly position are screwed. Each screwing portion 16B is provided at an outer edge of the base plate 16, and an adjustment bolt 16B1 is screwed into the screwing portion 16B from the outside of the seat to adjust the screwing position of each adjustment bolt 16B1. Thus, the protruding length of the shaft portion protruding from the end of each screwing portion 16B of each adjusting bolt 16B1 can be changed.

  The base plate 16 is provided with a resin side cover 16G covering the side surface portions of the base plate 16 and the slider 13 integrally with a plurality of bolts 16G1 on the side surface portion inside the seat. Further, 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 base plate 16 by a plurality of bolts 16H1 on the upper surface portion of the seat. Is provided. Each bolt 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 pressed against the rotary arm 18 by attachment via the spacer 16H2. It is in the state fixed in the state which floated from the rotation arm 18 without.

  The lock plate 17 is formed of a thick aluminum alloy material cut into a substantially fan shape, and is assembled to the base plate 16 through a stud bolt 16D fastened to the base plate 16 described above. It is said that. 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 fixed to the base plate 16 as a state in which the movement is restricted. Each of the adjustment bolts 16B1 can individually adjust the screwing position with respect to each screwing portion 16B. The protruding amount of the shaft portion of each adjusting bolt 16B1 can be individually taken in and out. By adjusting, 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, at the end of the long hole 17A on the side where the lock pin 18E1 is moved by the rotation of the rotating arm 18 in the deploying direction, the hole shape is extended so as to be drawn to the rotation center side (stud bolt 16D side). The drawn-out drawing hole 17B is formed.

  The drawing 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 5 to the unfolded position. Here, the rotational movement of the rotating arm 18 in the unfolding direction described above is such that the locking protrusion 18F formed on the back surface of the rotating arm 18 protrudes from the stopper 16A formed on the base plate 16 as shown in FIG. By being hit and locked, it is restricted to the deployed position. The pull-in hole 17B is in a state where the lock pin 18E1 reaches the end position of the long hole 17A by the rotation of the rotary arm 18 to the deployed position (the table 5 is in an oblique posture in which the right shoulder rises). When the lock pin 18E1 is pulled into the use position state in the horizontal posture, the lock pin 18E1 is pulled into the lock pin 18E1 and functions as a lock hole that locks in a state in which movement of the lock pin 18E1 in the rotational direction (the direction in which the long hole 17A extends) is restricted. It is like that. With this lock, the table 5 can be held so as not to be returned to the turning direction (storage direction) in the state of use in which the table 5 is dropped into the horizontal position.

  The above-described lead-in hole 17B has a shape wider than the diameter of the lock pin 18E1 in order to absorb the error in the assembly position of the lock plate 17 and the rotary arm 18 and the manufacturing error and retract the lock pin 18E1. Is formed. 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 rotates in the pull-in hole 17B in the rotational direction. I get loose. This rattling is not preferable because it acts to rattle the table 5 in the turning direction (deployment and storage direction) when the table 5 is in the horizontal position.

  Therefore, in order to suppress the occurrence of the rattling, the above-described lock plate 17 is attached in a state where the rotation direction 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 has locking protrusions 18 </ b> F that are formed to protrude from the back surface of the rotary arm 18 by rotating the rotary arm 18 described above to the deployed position around the stud bolt 16 </ b> D. At the position where the stopper 16A on the base plate 16 is locked, the lock pin 18E1 of the rotary arm 18 is brought into contact with the side surface 17B1 opposite to the deployment direction of the drawing hole 17B to be drawn into the drawing hole 17B. As described above, the mounting position in the rotation direction with respect to the base plate 16 is adjusted and positioned by each of the adjustment bolts 16B1 described above.

  By adjusting in this way, 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. The rotation in the abutting direction (one direction) is restricted, and the locking projection 18F of the rotating arm 18 described above is rotated in the locking direction (the other direction) by the locking structure that contacts the stopper 16A on the base plate 16. As a restricted state, the two-way movement in the rotational direction is locked in a restricted and non- playable state.

  In addition, the above-described drawing hole 17B is formed in a shape in which the receiving surface 17C for receiving the lock pin 18E1 at a position where the lock pin 18E1 abuts on the above-described side surface 17B1 is opened in an inclined manner so as to widely guide the reception of the lock pin 18E1. It becomes the composition. 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 and is prevented from rotating, so that the position in the height direction is raised by sliding in the long hole 17A. The position of 18E1 can be lowered to the lower side, so that the rotation stop of the lock pin 18E1 and the lowering of the height position can be achieved at the same time. As a result, the table 5 that is lifted obliquely from the storage position and developed can be lowered to a low position to be in a use position state. The adjustment mechanism 10D described above is formed so that the lock pin 18E1 can be positioned in a state in which the lock pin 18E1 does not rattle in both directions in the rotational direction, for example, by forming the pull-in hole 17B in a tapered shape. In order to adjust the position in the rotational direction for receiving the lock pin 18E1, the position where the lock plate 17 is attached to the base plate 16 in the rotational direction may be adjusted.

  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. The stud bolt 16D is assembled and assembled in such a state that the shaft can be rotated in the turning direction with respect to the lock plate 17 around the stud bolt 16D. Specifically, the rotary arm 18 is superposed 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 can swing the back surface of the table 5 in the height direction via the insertion-type first connecting pin 18A at the edge on the front end side. The table 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 via the plug-in type second connection pin 18B. It is configured to be pin-coupled so as to be able to swing in the vertical 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 rotary arm 18 is pressed and provided so as not to peel from the back surface of the rotary arm 18.

  As shown in FIG. 27, the connecting link 18D described above has the connecting structure described above, so that the table 5 described above is moved in accordance with the movement of the slide plate 18E in the longitudinal direction relative to the rotary arm 18. It is configured to perform a link motion so that the rotary arm 18 swings in the height direction around the first connection pin 18A in a form of pushing and pulling through the second connection pin 18B. Thus, the rotary arm 18 is connected to the table 5 via the connecting link 18D with the table 5 in accordance with the movement of the table 5 swinging in the height direction around the first connecting pin 18A. The slide plate 18E thus made slides in the longitudinal direction with respect to the rotary arm 18, and is connected to the slider crank.

  As shown in FIG. 27, the connecting link 18D takes a posture state in which the table 5 is collapsed into a posture state parallel to the slide plate 18E when the table 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 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). While being raised from the slide plate 18E by being pulled upward by the table 5, the slide plate 18E is slid so as to be pulled.

  Thus, the above-described rotating arm 18 is connected to the base plate 16 so as to be rotatable about the stud bolt 16D, and the table 5 attached to the upper portion of FIG. 2 and the unfolded position shown in FIG. 2 (rotation mechanism 10B in the width direction). Further, the rotary arm 18 has a structure in which the table 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 5 is shown in the unfolded position shown in FIG. It is comprised so that it can be rotated also to a height direction between the use positions of a horizontal attitude | position (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 slide unless the table 5 is moved to the unfolded position (see FIG. 2) by the 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 18E cannot be slid to pull the lock pin 18E1 into the pull-in hole 17B unless the rotary arm 18 is rotated to the position where the table 5 is deployed to the deployed position. This is because the restriction structure prevents the rotary arm 18 from sliding unless the table 5 is moved to the deployed position. Therefore, in the region where the sliding of the slide plate 18E is restricted, the table 5 is held in a state of being superimposed on the upper surface portion of the rotary arm 18, as shown by the solid line state in FIG. Yes.

  As shown in FIG. 2, the slide plate 18 </ b> E has the lock pin 18 </ b> E <b> 1 inserted into the pull-in hole 17 </ b> B as shown in FIG. 30 when the table 5 is deployed to the deployed position by the rotation of the rotary arm 18. It will be in the state which can be slid with respect to the rotation arm 18 in the aspect pulled in. By this sliding, the slide plate 18E is allowed to move so that the table 5 is dropped from the deployed position to the use position in the horizontal posture. The table 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 5 is dropped into the use position in the horizontal posture by its own weight is appropriately attenuated, and the table 5 is slowly dropped into the horizontal position. It is like that. Further, the moment when the table 5 is raised from the use position of the horizontal posture to the deployed position is also appropriately attenuated, so that the table 5 is slowly raised from the horizontal position.

  Specifically, the damper 18J is unfolded and stored between a deployed position where the table 5 is superposed on the rotary arm 18 (an oblique position where the right shoulder is raised) and a use position raised up from the rotary arm 18 (horizontal position). It is provided so that a viscous resistance force is applied to the slide plate 18E constituting the slider crank mechanism. When the table 5 moves in the region close to the unfolded position, the slide plate 18E has a small slide movement amount relative to the swinging rotational movement amount of the table 5, but when the table 5 moves in the region close to the horizontal position, the table 5 The amount of slide movement relative to the amount of rotational movement of the head is increased. Therefore, when the viscous damper 18J is connected to the slide plate 18E that moves in this manner, when the table 5 is moved up and down in the region close to the unfolded position (the position of the slanting posture that rises to the right), the damper When the viscous resistance force by 18J is made to act small and the table 5 is raised and lowered in the region close to the use position (horizontal position), the viscous resistance force by the damper 18J can be made to act largely.

  Therefore, the first area where the table 5 starts to drop from the development position (position of the slanting posture where the shoulder rises to the right) to the use position (horizontal position), or the position where the table 5 is deployed from the use position (the horizontal position) In the final stage area where the position is raised up to the position of the posture, the table 5 can be raised and lowered smoothly with relatively little sense of resistance. In addition, the final stage area where the table 5 is dropped from the deployment position (an oblique posture with an upward shoulder to the right) to the use position (horizontal position), or the table 5 from the use position (the horizontal position) to the deployment position (an oblique angle with an upward shoulder). In the first region that starts to be raised to the position of the posture, the speed of the table 5 can be effectively attenuated, and the table 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 5 is moved from the use position (horizontal position) to the deployed position (right shoulder) between the rotary arm 18 and the table 5. When the table 5 is lifted up to a position where the table 5 is brought close to the unfolded position, a force in the direction of pulling (superposing) the rotating arm 18 is applied to the table 5. A magnet structure including a metal plate 18G and a magnet 5B5 is provided. Specifically, as shown in FIG. 5, the magnet structure includes a long plate-like metal plate 18 </ b> G provided at two edge portions inside and outside the sheet on the upper surface of the rotary arm 18, and FIG. 7. As shown, it is configured by a combination of long plate-like magnets 5B5 provided at two corresponding positions on the back surface of the table 5. The magnet structure allows the seated person to feel as a moderation feeling when the table 5 is raised to the unfolded position where the table 5 is superposed on the rotary arm 18 by the attractive force exerted. With this moderation feeling, the operation of raising the table 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 5 is not pressed against the rotating arm 18 on the back surface of the table 5 when the table 5 is raised from the use position to the deployed position. A long plate-like rubber 5B6 for buffering the hit is provided. 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. 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, so that the movement of raising the table 5 to the unfolded position is buffered.

  Therefore, when the table 5 is raised from the use position to the deployed position due to the structure provided with the rubber 5B6, the table 5 is raised to the approaching area close to the deployed position, thereby the above-described magnet structure. Since the table 5 can be softened so that the table 5 does not collide with the rotary arm 18 at the deployed position while applying a force in the direction of drawing to the rotary arm 18 against the table 5, the table 5 is raised to the deployed position with a sense of moderation. Can be raised and locked. Therefore, after raising the table 5 to the unfolded position, it is possible to smoothly perform the storing operation of rotating the table 5 in the turning direction toward the storing position while maintaining the height state of the unfolded position.

  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 5 is raised from the use position to the deployed position. Thus, the magnetic structure is adjusted so that the pulling force of the magnet structure is not too strong, and the table 5 can be smoothly dropped from the unfolded position to the use position by its own weight.

  As shown in FIGS. 5 to 6, a cam follower 18 </ b> C is attached to the rotating arm 18 described above at a position close to a position where the stud bolt 16 </ b> D serving as the rotation center is passed. The cam follower 18C has a shaft portion that is passed through a cylindrical bush 18C2 and is mounted on the rotating arm 18. The outer ring may rotate relative to the shaft portion at a position floating upward from the rotating arm 18. It is in a state where it is supported and supported. The outer ring is fitted with a brass cap 18C1 covered from the outer peripheral side. The cam follower 18C described above 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 described above rotates in the seat width direction or the slider 13 slides in the seat longitudinal direction. The inside of the guide hole 19B is slid by the 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 that is 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 includes a lock groove 19B1 into which the cam follower 18C can be inserted and hooked when the table 5 is in the retracted position, and the rotary arm 18 as the slider 13 moves forward when the table 5 is unfolded. The deployment guide surface 19B2 that can guide the movement of the cam follower 18C so as to be rotated little by little in the deployment direction, and the rotary arm 18 is stored little by little as the slider 13 moves backward when the table 5 is moved. And a storage guide surface 19B3 that can guide the movement of the cam follower 18C so as to rotate in the direction.

  Further, when the table 5 is stored in the storage position inside the support base 4 on the front leg portion of the guide plate 19, it is applied to the front end portion of the table 5 from below to support it. A support 19C is provided. The support 19C is fixed to the front leg portion of the guide plate 19 by being integrally fastened by a plurality of bolts 19C3 with an L-shaped plate 19C2 interposed therebetween. The support 19C is applied so that the front end of the table 5 is placed on the upper surface (support surface 19C1) when the table 5 is stored in the storage position inside the support base 4. As a result, the front end of the table 5 is prevented from sagging due to its own weight.

  The guide hole 19B formed in the guide plate 19 described above guides the movement of the cam follower 18C when the table 5 is deployed and stored as follows. That is, first, the guide hole 19B described above enters the above-described cam follower 18C into the lock groove 19B1 formed at the rear end of the guide hole 19B when the table 5 is stored in the storage position inside the support base 4. In this state, the cam follower 18C is held in a state in which movement of the cam follower 18C toward the front side of the seat is restricted (see FIG. 29). As a result, the movement of the slider 13 described above to be moved in the same direction by the urging force to the front side of the seat received from the helper 14 is restricted, and the table 5 is held in the storage position. Yes.

  In addition, the guide hole 19B is operated so that the seat 5 pulls the table 5 toward the front side (the seat inside) by placing a hand on the handle portions 5A1 and 5B1 of the table 5 from the state where the table 5 is in the storage position. Thus, the cam follower 18C is rotated around the stud bolt 16D, and the cam follower 18C is removed from the lock groove 19B1. And the guide hole 19B will be in the state by which the cam follower 18C was pressed by the expansion | deployment guide surface 19B2 by the rotation operation to the sheet | seat inner side of the said table 5 being advanced.

  Here, the unfolding guide surface 19B2 is configured as an inner peripheral surface having a surface facing the inner side of the seat in the guide hole 19B, and a position where a step surface 19B4 on the way from the rear side to the front side of the seat is formed. Is formed in a curved shape so as to smoothly spread obliquely outward toward the front side of the seat. As a result, the deployment guide surface 19B2 rotates the table 5 from the storage position to the inside of the seat and brings the cam follower 18C into contact with the cam follower 18C so that the table 5 does not slide further forward from the seat. The movement of the cam follower 18C is guided so that the table 5 cannot be further rotated inward of the seat.

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

  The step surface 19B4 in the middle of the unfolding guide surface 19B2 has a curved surface shape that can escape the movement of rotating the cam follower 18C around the stud bolt 16D to the unfolded position, and the table 5 is unfolded to this position. By doing so, the table 5 can be rotated to the unfolded position toward the seated person. The unfolding guide surface 19B2 is formed so that the area ahead of the step surface 19B4 extends straight toward the front side of the seat, and the cam follower 18C is unfolded and rotated by the step surface 19B4. The guide is adapted to be slid to the front side of the seat while maintaining.

  As described above, in the development guide surface 19B2, the region up to the stepped surface 19B4 in the middle of the development movement of the table 5 slides forward between the storage position and the development position and rotates inward of the seat. This is an unfolded storage area that can be linked to each other. Specifically, in the development 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 deploying the table 5 to the deployment position. Only rotational movement to the inside of the seat is performed, and sliding to the front side is not performed in conjunction.

  Further, the unfolding guide surface 19B2 is a use region in which a region beyond the end of the rounded surface of the step surface 19B4 can be adjusted in the front-rear direction by dropping the table 5 into the use position in the horizontal posture. In this region, only the slide movement in the front-rear direction of the table 5 is performed, and the rotation in the sheet width direction is not performed in conjunction with the table 5. The position of the table 5 is adjusted in the front-rear direction by an operation in which the seated person pushes and pulls the table 5 in the front-rear direction within the use region. The table 5 is pulled to the boundary position on the rear side of the use area, so that the cam follower 18C hits the radius of the step surface 19B4 and is locked.

  Instead of the stepped surface 19B4 described above, when the cam follower 18C is applied to the guide plate 19 from the rear side, the cam follower 18C is released from the front side so that the movement of the cam follower 18C can be passed forward, and the cam follower 18C is applied from the front side. A separate locking member that functions to receive the movement of the cam follower 18C may be provided. By doing so, it is not necessary to smoothly connect the shape of the unfolded guide surface 19B2 of the guide hole 19B to the stepped surface 19B4, so that the degree of freedom in selecting the guide shape that spreads outward can be increased. . As a configuration for allowing the separate locking member to escape the movement when the cam follower 18C is applied from the rear side, for example, the movement of the cam follower 18C applied from the rear side to the back surface of the locking member can be released. The structure of providing the inclined surface which performs is mentioned.

  The guide hole 19B is configured so that a seated person raises the table 5 from a state where the table 5 is deployed to a use position in a horizontal posture to bring the table 5 into an oblique posture in which the right shoulder rises, and further pushes the table 5 to the outside of the seat. , The cam follower 18C described above is rotated around the stud bolt 16D, and the cam follower 18C is separated from the deployment guide surface 19B2 and pressed against the storage guide surface 19B3 facing the same surface. It becomes.

  The storage guide surface 19B3 is configured as an inner peripheral surface facing the outer surface of the seat in the guide hole 19B, and the entire storage guide surface 19B3 is curved so as to be smoothly drawn obliquely inward toward the rear side of the seat. It is formed into a shape. Thus, the storage guide surface 19B3 rotates the table 5 to the outside of the seat so that the cam follower 18C is brought into contact with the storage guide surface 19B3. The movement of the cam follower 18C is guided so that it cannot be rotated outside the seat.

  With the guide structure of the storage guide surface 19B3, the table 5 can be stored and rotated little by little toward the outside of the seat as the slide moves backward from the use position (deployment position) to the storage position. In addition, the movement trajectory of the table 5 can be limited. That is, the guide structure of the storage guide surface 19B3 guides the rotational movement of the table 5 in the storage direction in conjunction with the sliding movement to the rear side of the seat. Therefore, with this guide structure, the table 5 is simply operated to be pushed out rearward of the seat, and the table 5 is rotated little by little outward while sliding the seat 5 backward so as not to interfere with the support 4. It can be moved to the storage position so as to pass through the path (see FIG. 1).

  Specifically, the storage guide surface 19B3 is formed in a smoothly curved shape so that the entire surface is drawn inwardly toward the rear side of the seat, and the table 5 is developed and stored. The table is guided so that it can be moved to the storage position at a stroke by a single operation of pushing the table 5 backward to the outside of the seat, regardless of whether the table 5 is in the use area or the use area. Therefore, for example, the table 5 can be easily moved to the same storage position by the same operation as compared with a configuration in which the storage operation must be performed after the table 5 is returned from the use area to the boundary position with the development storage area. It can be returned, and 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 5 is stored from the rear end position of the use area, the resistance from the helper 14 from the first area where the table 5 starts to be stored. Since it is configured not to receive force, and the resistance force from the helper 14 can be applied after the storage movement has progressed to some extent, the storage operation of the table 5 can be easily performed.

  Further, as shown in FIG. 22, the slider 13 slides to the end position (deployment position of the table 5) of the deployment storage area where the assist force by the helper 14 is applied, so that the assist force from the helper 14 is not received. It becomes a state and is locked by friction with the rail 12 at that position. The slider 13 is moved to an appropriate position by a manual operation in which the seat 5 pushes and pulls the table 5 in the front-rear direction in the use area where the table 5 is switched to the horizontal posture state beyond the area. When it is moved and released at each adjusted position, it is locked into that position by friction.

  Thus, as shown in FIGS. 3 to 5 and 25, the table 5 of the present embodiment is configured to include two table pieces 5 </ b> A and 5 </ b> B that are hinged to each other and can be folded. . The two table pieces 5A and 5B are configured to be unfolded by being operated so that the table piece 5A on one side is opened from the folded state with the table piece 5B on the other side. The one-side table piece 5A protrudes outward from the other-side table piece 5B in the folded state with the other-side table piece 5B, and makes it easy to put a finger to open the one-side table piece 5A. 5A3 and an inclined surface 5A4 (smooth portion) that smoothes the step between the edge surface (inclined surface 5B3) of the other table piece 5B formed by the protruding shape of the protruding portion 5A3.

  Thus, since the table piece 5A on one side has a shape having the overhanging portion 5A3, a finger is applied to the overhanging portion 5A3 to apply a force in the opening operation direction only to the one table piece 5A. Can be done easily. Therefore, the expansion operation of the table 5 can be easily performed. Further, the protruding portion 5A3 has a shape with a good finger contact, because the step between the edge surface (inclined surface 5B3) of the other table piece 5B is loosened by the inclined surface 5A4. Thus, the unfolding operation of the table 5 can be performed more easily.

  Further, as shown in FIGS. 16 to 18, the two table pieces 5 </ b> A and 5 </ b> B are inclined obliquely downward and outward inside the support base 4 (storage body) provided on the outer side of the sheet 1. A slit which is configured to be folded and stored in a posture state, and the overhanging portion 5A3 and the edge surface (inclined surface 5B3) of the other table piece 5B are opened in the inner wall portion of the support base 4 when stored. It is configured to be exposed from 4B to the inside of the sheet. The edge surface (inclined surface 5B3) of the overhanging portion 5A3 exposed from the slit 4B and the edge surface (inclined surface 5B3) of the other table piece 5B are mutually connected to the inner side surface 4C facing the sheet 1 of the support base 4. The surface is inclined so as to form a flat surface.

  In this way, the two table pieces 5A and 5B are arranged obliquely inside the support base 4 and stored in a folded state, so that the table 5 is placed inside the support base 4 in the sheet width direction. And can be stored compactly both in the height direction. Further, even if the table 5 is disposed obliquely as described above, the overhanging portion 5A3 exposed from the slit 4B of the support base 4 and the edge surface (inclined surface 5B3) of the other table piece 5B are the support base 4's. Since the inner surface 4C facing the sheet 1 has a surface shape inclined so as to be flush with each other, it can be provided in a state where it is exposed from the slit 4B with a good appearance.

  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 table of the present invention can be applied to various railcar seats and also widely applied to seats used for vehicles other than railways such as automobiles and other vehicles such as aircraft and ships. Is something that can be done.

  Further, the table may be opened in one direction from the folded state of the table piece on one side with the table piece on the other side. Further, the table is not limited to a form in which the two table pieces are folded from each other in a folded state, and the position where the table piece on one side is inclined with respect to the table piece on the other side. It may be used after being expanded to a maximum. Further, the table may not be configured to be unfolded and stored with respect to the vehicle seat.

  Further, the overhang portion formed on the table piece on one side may be formed on any side of the table piece on one side, and is formed on a part of the side in the circumferential direction. Also good. Further, the shape of the overhanging portion is not particularly limited, and it may be a plate-like one or a pin-like one. In addition, the smooth part that loosens the step between the edge surface of the table piece on the other side due to the protruding shape of the protruding part should be curved, stepped or partially cut out of the edge surface of the protruding part. May be formed so as to loosen the step between the edge of the other table piece.

1 seat 2 seat back 3 seat cushion 4 support base (housing body)
4A Armrest 4B Slit 4C Inner surface 5 Table 5A Table piece (table piece on one side)
5A1 Handle 5A1a Recess 5A2 Groove 5A3 Overhang 5A4 Inclined surface (smooth part)
5B Table piece (Table piece on the other side)
5B1 Handle 5B1a Recess 5B2 Groove 5B3 Inclined surface (edge surface)
5B4 Rib 5B5 Magnet 5B6 Rubber 5C Hinge connecting part 10 Table moving device 10A Slide mechanism 10B Rotating mechanism in the width direction 10C Rotating mechanism in the height direction 10D Adjusting mechanism 11 Fixed frame 11X Outer inclined upright surface part 11Y Inner vertical upright surface part 11Z Inward inclined upright part 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 14A Stay 14B Resin shoe 14C Cover 15 Winding device 15 15B Bolt 16 Base plate 16A Stopper 16B Screw part 16B1 Adjustment bolt 16C Bolt 16D Stud bolt 16D1 Bolt 16E Bush 16F Nut 16G Side cover 16G1 Bolt 16H Upper cover 16H1 Bolt 16H2 Spacer 17 Lock plate 17A Long hole 17B Retraction hole 17B1 Side surface 17C Receiving surface 18 Rotating arm 18A First connecting pin 18C 18 Second connecting pin 18C 18 Bush 18D Connecting link 18E Slide plate 18E1 Lock pin 18E2 Rack tooth 18F Locking projection 18G Metal plate 18H Lid cover 18J Damper 18J1 Pinion 19 Guide plate 19A Bolt 19B Guide hole 19B1 Lock groove 19B2 Deployment guide surface 19B3 Storage guide surface 19B4 Support 19C1 Support surface 19C2 L-shaped plate 19C3 Bolt

Claims (1)

A vehicle seat table comprising two table pieces hinged to each other and foldable,
The two table pieces are configured to be operated and expanded so that the table piece on one side is opened from the folded state with the table piece on the other side,
The table piece on one side is
In the folded state with the table piece on the other side, an overhanging portion that protrudes outward from the table piece on the other side and makes it easier to put a finger to perform the opening operation of the one table piece;
Have a, a smooth portion that facilitates loosening the step between the edge surface of the other side of the table pieces are formed by projecting the shape of該張out portion,
The two table pieces are configured to be folded and housed in a state of being inclined obliquely downward and outward inside a housing body provided on the outer side portion of the vehicle seat, and during the storage. The overhanging portion and the edge surface of the other table piece are provided to be exposed to the vehicle seat side from a slit opened in the inner wall portion of the storage body, and are exposed from the slit. and wherein Rukoto and the edge surface of the the overhang other side of the table piece is a slanted surface shape so as to form the shape of the inner wall surface facing the vehicle seat together flush with the housing body Vehicle seat table.

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