JP2002154362A - Table structure of seat back - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and speedily make a table main body in a using state and a storing state, to make the table main body in the storing state in the case when a rear seat seated person collides against the table main body in the using state of the table main body and to easily carry out angular adjustment of the table main body. SOLUTION: A head end 45b of a roughly U shaped spring rod 45 is provided along a guide rail 37 provided on the table main body 35 free to longitudinally move. A plurality of lock grooves 39 or beads 51 are formed on the side of an upper part 38a of a rail part 38 to guide the head end 45b of the spring rod 45. The side of the head end 45b of the spring rod 45 is selectively engaged with either of the plurality of the lock grooves 39 or beads 51. It is made possible to carry out the angular adjustment of the table main body 35 in the using state. The table main body 35 is held roughly in a horizontal state in a reclining state of a seat back 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table structure of a seat back, and more particularly, to a table structure having a table body rotatably supported by a hinge bracket provided on the back side of the seat back. The main body is held substantially horizontally from the stored state along the back side of the seat back by a cam member provided on the back side of the seat back and a substantially U-shaped spring rod holding a rotating state by the cam member. The present invention relates to a table structure of a seat back to be used.

[0002]

2. Description of the Related Art Generally, in a vehicle seat or the like, a table body is provided on the back side of a front seat back,
The rear seat occupant can use the table main body as a use state in which the table main body is held substantially horizontally from the storage state along the back side of the seat back, thereby improving the livability in the vehicle interior.

As shown in FIG. 10, a conventional table structure 1 for a seat back includes a table body 7 rotatably supported by a pair of left and right hinge brackets 5 provided on both sides of the seat back 3. ing. This table body 7
Is formed from a linear plate-like body along the flat back surface of the seat back 3.

[0004] A table latch or the like is provided on the back side of the seat back 3. When the table body 7 is stored along the back side of the seat back 3, as shown by an imaginary line in FIG. 7 can be locked to the back side of the seat back 3 by a table latch or the like.

As shown in FIGS. 9 (a) and 9 (b), a cam member 11 is provided on the back side of the seat back 3, and is rotated by a semi-circular cam 12 having an arc-shaped cross section on both sides of the cam member 11. A substantially U-shaped spring rod 13 for maintaining the state is rotatably supported by the cam member 11, and a tip end of the substantially U-shaped spring rod 13 is provided on a guide rail 15 provided on the lower surface of the table body 7. A configuration provided so as to be able to move back and forth along the line is disclosed in Japanese Patent Application Laid-Open No. 12-177664.

[0006] As shown in FIG.
The table body 7 is held in a storage state along the back side of the seat back 3 with the substantially U-shaped spring rod 13 moving below the hemispherical cam 12 of FIG.
As shown in FIGS. 8A and 8B, the table body is in a state in which a substantially U-shaped spring rod 13 is urged above the hemispherical cam 12 of the cam member 11 as shown in FIG. 7 is configured to be in a use state held substantially horizontally.

Accordingly, the table body 7 can be easily and quickly brought into the use state and the storage state, and when the table body 7 is used and an impact load is applied to the table body 7 from a rear seated person. The substantially U-shaped spring rod 13 can easily move downward along the hemispherical cam 12 of the cam member 11, and the rear seated person can move the table body 7.
The table body 7 can be moved in the direction along the back side of the seat back 3 even if the collision occurs, and the table body 7 can be stored.

[0008]

However, in the conventional seat back table structure 1, the spring rod 13 can be moved back and forth along the guide rail 15, but the rotation locus of the spring rod 13 is the guide rail 1.
5, the length of the guide rail 15 is limited, the rotation locus of the spring rod 13 is constant, and the angle of the table body 7 cannot be adjusted.
When the tilt angle of the seat back 3 is changed while the table body 7 is in use, the table body 7 is tilted as shown by the imaginary line in FIG. There is a risk that the beverage such as a cup or the like may fall or a beverage such as a cup may be spilled.

SUMMARY OF THE INVENTION It is an object of the present invention to easily and quickly bring a table main body into a use state and a storage state. It can be moved in the direction along the back side of the back to be in the stored state, the angle of the table body can be easily adjusted, there is no danger of spilling of beverages such as cups placed on the table body, and the sheet with table The present invention provides a seatback table structure capable of improving the livability in a vehicle cabin without having to limit the sitting posture of a seated person.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a seat back table structure according to a first aspect of the present invention has a hinge bracket provided on the back side of the seat back. A table body rotatably supported on the table body, the table body being provided with a cam member provided on the back side of the seat back, and a substantially U-shaped spring rod holding a rotating state by the cam member. In the seat back table structure which is in a use state where it is held substantially horizontally from the stored state along the back side of the seat back,
The tip of the substantially U-shaped spring rod is provided so as to be able to move back and forth along a guide rail provided on the table body, a plurality of lock grooves are formed in a rail portion of the guide rail, and the tip end of the spring rod is The table body is selectively locked in any one of a plurality of lock grooves so that the angle of the table body can be adjusted in use.

[0011] A seat back table structure according to a second aspect of the present invention includes a table body pivotally supported by a hinge bracket provided on the back side of the seat back, and the table body is provided. A use state in which the cam member provided on the back side of the seat back and a substantially U-shaped spring rod holding a rotating state by the cam member are held substantially horizontally from the stored state along the back side of the seat back. In the table structure of the seat back, the tip of the substantially U-shaped spring rod is provided so as to be able to move back and forth along a guide rail provided on the table main body, and an upper portion of the rail portion of the guide rail on the table main body side is provided. A plurality of beads are formed in the table body, and the distal end side of the spring rod is selectively locked to any of the plurality of beads. Characterized in that the angle adjustment in the state has been made possible.

[0013] A seat back table structure according to a third aspect of the present invention includes a table body pivotally supported by a hinge bracket provided on the back side of the seat back, and the table body is provided with a table body. A use state in which the cam member provided on the back side of the seat back and a substantially U-shaped spring rod holding a rotating state by the cam member are held substantially horizontally from the stored state along the back side of the seat back. In the table structure of the seat back, the tip of the substantially U-shaped spring rod is provided so as to be able to move back and forth along a guide rail provided on the table main body, and an upper portion of the rail portion of the guide rail on the table main body side is provided. A plurality of beads are formed in the table body, and the distal end side of the spring rod is selectively locked to any of the plurality of beads. Together are made to be capable of angular adjustment in state, characterized in that configured so as to be able to hold the table body in a substantially horizontal state in a reclining state of the seat back.

According to the seat back table structure of the first aspect of the present invention, the tip of the substantially U-shaped spring rod is provided so as to be movable back and forth along a guide rail provided on the table body. A plurality of lock grooves are formed in the rail portion of the guide rail, and the distal end side of the spring rod is selectively locked in any of the plurality of lock grooves of the rail portion, so that the angle of the table body in use can be adjusted. Therefore, the position of the spring rod with respect to the guide rail can be adjusted back and forth by selecting and locking one of the plurality of lock grooves, changing the rotation locus of the spring rod, and changing the table body. The angle of the table can be easily adjusted, and there is no danger of spilling of beverages such as cups placed on the table body. No possibility to, it is possible to improve the comfort of the vehicle interior.

According to the seat back table structure of the second aspect of the present invention, the tip of the substantially U-shaped spring rod is provided so as to be movable back and forth along a guide rail provided on the table body. A plurality of beads are formed on the rail portion of the guide rail on the table body side, and the tip side of the spring rod is selectively locked to any of the plurality of beads, so that the angle adjustment in use of the table body can be performed. Since it is made possible, the position of the spring rod with respect to the guide rail can be adjusted by moving one of a plurality of beads to the front and rear by locking.
By changing the rotation locus of the spring rod, the angle of the table body can be easily adjusted, and there is no danger of spilling of a beverage such as a cup placed on the table body, and the sitting posture of the seated person with the table seat is limited. There is no fear, and the livability in the vehicle interior can be improved.

According to the table structure of the seat back according to the third aspect of the present invention, the tip of the substantially U-shaped spring rod is provided so as to be movable back and forth along a guide rail provided on the table body. A plurality of beads are formed on the rail portion of the guide rail on the table body side, and the tip side of the spring rod is selectively locked to any of the plurality of beads, so that the angle adjustment in use of the table body can be performed. It is made possible, and the table body can be held in a substantially horizontal state in the reclining state of the seat back, so that the position of the spring rod with respect to the guide rail is locked by selecting one of a plurality of beads. To adjust the angle of the table body by changing the rotation trajectory of the spring rod. In addition, by selecting the bead on the hinge bracket side of the table main body and locking the tip end of the spring rod, the table main body can be held in a substantially horizontal state in the reclining state of the seat back, and the reclining can be easily changed, There is no danger that a beverage such as a cup placed on the table body will be spilled, and there will be no danger of restricting the seating posture of the occupant of the seat with the table, and the livability in the vehicle interior can be improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A table structure of a seat back according to the present invention will be described below in detail with reference to the drawings. 1 to 7
Each shows an embodiment of a table structure of a seat back according to the present invention. In this embodiment, a case where the present invention is applied to a vehicle seat will be described, but the present invention is limited to a vehicle seat. Instead, it can be applied to various sheets.

As shown in FIGS. 1 and 2, the table structure 31 disposed on the rear side of the seat back 23 of the vehicle seat 21 on the front side of the vehicle seat includes a seat back 2.
A pair of left and right hinge brackets 3 provided on the back side of
3 is provided with a table body 35 pivotably supported by the table 3.

The table body 35 is used for the seat back 23.
It is configured to be in a use state where it is held substantially horizontally from a storage state along the back side of the camera. Reference numeral 22 denotes a seat cushion. Further, the table body 35 is formed of a synthetic resin molded product such as vinyl chloride or a light metal,
The table main body 35 can be formed with a through hole for a cup holder, a mounting portion having a concave cross section, and the like.

As shown in FIG. 1, on the back side of the seat back 23 facing the space between the pair of left and right hinge brackets 33 of the table main body 35, the same as the prior art shown in FIGS. 9 (a) and 9 (b). A cam member 41 is provided, and a spring rod 45 formed of a substantially U-shaped wire spring or the like, which is held in a rotating state by the cam member 41, is formed on the back side of the table main body 35 longer than the guide rail shown in the related art. Inserted into the guide rail 37.

The cam member 41 is formed with a pair of left and right hemispherical cams 43 having an arc-shaped cross section as in the prior art. Base end 4 of substantially U-shaped spring rod 45
The 5a side is bent into an L-shape, is pivotally supported on the upper end side of the hemispherical cam 43 of the cam member 41, and the distal end 45b side of a substantially U-shaped spring rod 45 is provided so as to be movable back and forth along the guide rail 37. I have.

A plurality of lock grooves 39 are formed in a rail portion 38 formed inside the guide rail 37, and the tip 45b side of the spring rod 45 is selectively inserted into any one of the plurality of lock grooves 39 of the rail portion 38. The table body 35 is locked so that the angle of the table body 35 can be adjusted in use.

As shown in FIG. 4, a plurality of beads 51 as a plurality of lock grooves 39 are provided in an upper portion 38a of the rail portion 38.
May be formed. In addition, although the interval and the number of the beads 51 can be appropriately changed, in the present embodiment, ten beads 51 are formed. The bead 51 is set to have an appropriate click feeling, and luggage and the like are stored in the table
The table body 35 is formed in such a size that the table main body 35 does not fall down due to its own weight of the luggage or the like, and is unlocked when an impact load is applied.

By selecting one of the plurality of beads 51 and locking the end 45b of the spring rod 45, the length of the guide rail 37 that guides the end 45b of the spring rod 45 is adjusted. By changing the rotation locus of the rod 45, the angle of the table body 35 can be easily adjusted.

Therefore, as shown in FIG.
When the tip 45b side of the spring rod 45 is moved to the left from the state where 5 is at the reference position (neutral position), the angle of the table body 35 can be adjusted to a state inclined upward as shown in FIG. In this state, the seat back 23 can be set in a reclining state in which the seat back 23 is inclined backward.

When the tip 45b of the spring rod 45 is moved to the right from the state shown in FIG. 5, the angle of the table body 35 can be adjusted to a state inclined downward as shown in FIG. In the state, the seat back 23
From the standing state to the forward leaning state.

[0026]

The above is the embodiment of the table structure of the seat back according to the present invention. According to the table structure of the seat back according to the first aspect of the present invention, the substantially U-shaped spring rod is provided. The distal end is provided so as to be able to move back and forth along a guide rail provided on the table body, a plurality of lock grooves are formed in a rail portion of the guide rail, and the distal end side of the spring rod is any one of a plurality of lock grooves in the rail portion. And the angle of the table body in use can be adjusted, so that the position of the spring rod with respect to the guide rail can be locked by selecting one of the plurality of lock grooves. To adjust the forward and backward movement, change the rotation trajectory of the spring rod,
The angle of the table main body can be easily adjusted, there is no danger of drinks such as cups placed on the table main body being spilled, and there is no danger of restricting the seating posture of the seated person with the table-equipped seat. Can be improved.

According to the seatback table structure of the second aspect of the present invention, the distal end of the substantially U-shaped spring rod is provided so as to be movable back and forth along a guide rail provided on the table body. A plurality of beads are formed on the rail portion of the guide rail on the table body side, and the tip side of the spring rod is selectively locked to any of the plurality of beads, so that the angle adjustment in use of the table body can be performed. Since it is made possible, the position of the spring rod with respect to the guide rail can be adjusted by moving one of a plurality of beads to the front and rear by locking.
By changing the rotation locus of the spring rod, the angle of the table body can be easily adjusted, and there is no danger of spilling of a beverage such as a cup placed on the table body, and the sitting posture of the seated person with the table seat is limited. There is no fear, and the livability in the vehicle interior can be improved.

According to the seat back table structure of the third aspect of the present invention, the distal end of the substantially U-shaped spring rod is provided so as to be movable back and forth along a guide rail provided on the table body. A plurality of beads are formed on the rail portion of the guide rail on the table body side, and the tip side of the spring rod is selectively locked to any of the plurality of beads, so that the angle adjustment in use of the table body can be performed. It is made possible, and the table body can be held in a substantially horizontal state in the reclining state of the seat back, so that the position of the spring rod with respect to the guide rail is locked by selecting one of a plurality of beads. To adjust the angle of the table body by changing the rotation trajectory of the spring rod. In addition, by selecting the bead on the hinge bracket side of the table main body and locking the tip end of the spring rod, the table main body can be held in a substantially horizontal state in the reclining state of the seat back, and the reclining can be easily changed, There is no danger that a beverage such as a cup placed on the table body will be spilled, and there will be no danger of restricting the seating posture of the occupant of the seat with the table, and the livability in the vehicle interior can be improved.

According to the present invention, the table main body can be easily and quickly brought into the use state and the storage state, and the table main body can be seated even if a rear seat occupant collides with the table main body in the use state of the table main body. It can be moved in the direction along the back side of the bag to be in the stored state, the angle of the table main body in the vertical direction can be easily adjusted, and there is no danger of beverages such as cups placed on the table main body spilling. There is no risk of restricting the sitting posture of the seated person with the table seat, and the table body can be used from the reclining state of the seat back to the forwardly inclined state, thereby improving the livability in the vehicle interior. It is possible to obtain a seat back table structure that can be used.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of a table body having a seat back table structure according to the present invention.

FIG. 2 is a side view of a vehicle seat to which a seatback table structure according to the present invention is applied.

FIG. 3 is an explanatory perspective view of a table structure of a seat back according to the present invention.

FIG. 4 is an explanatory side view of the table structure of the seat back according to the present invention.

FIG. 5 is an explanatory side view of a table main body having a table structure of a seat back according to the present invention in a reference position.

FIG. 6 is an explanatory side view of the reclining state of the table structure of the seat back according to the present invention.

FIG. 7 is an explanatory side view of the table structure of the seat back according to the present invention from a standing state to a forwardly inclined state.

8A and 8B show a table structure of a conventional seat back, respectively, wherein FIG.
(B) is a side view of the use state of a table main body.

9A and 9B show cam members having a table structure of a conventional seat back, respectively. FIG. 9A is a front view of a stored state of the table body, and FIG. 9B is a front view of a used state of the table body.

FIG. 10 is a schematic side view showing a table structure of a conventional seat back.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Vehicle seat 23 Seat back 31 Table structure 33 Hinge bracket 35 Table body 37 Guide rail 31 Locking member 32 Center cam member 33 Wire spring 33a Base end 33b Tip 35 Table body 37 Guide rail 38 Rail 38a Upper part 39 Lock groove 41 Cam member 43 Hemisphere cam 45 Spring rod 45a Base end 45b Tip 51 Bead

Claims (3)

[Claims] A cam member provided on a back side of the seat back, the cam body including a table body rotatably supported by a hinge bracket provided on a back side of the seat back; and the cam member. A substantially U-shaped spring rod that holds a rotating state by using a substantially U-shaped spring rod. The distal end of the rod is provided so as to be able to move back and forth along a guide rail provided on the table body, a plurality of lock grooves are formed in a rail portion of the guide rail, and the distal end side of the spring rod is provided with a plurality of lock grooves in the rail portion. The seat back is selectively locked to any one of the above, and the angle can be adjusted in a use state of the table main body. Buru structure. 2. A cam member provided rotatably on a hinge bracket provided on the back side of the seat back, wherein the table body is provided on the back side of the seat back, and the cam member. A substantially U-shaped spring rod that holds a rotating state by using a substantially U-shaped spring rod. The tip of the rod is provided so as to be able to move back and forth along a guide rail provided on the table body, a plurality of beads are formed on the upper part of the rail portion of the guide rail on the table body side, and the tip side of the spring rod is provided with a plurality of beads. A seat that is selectively locked to one of the beads and is capable of adjusting an angle in a use state of the table main body. Click of the table structure. 3. A cam member provided rotatably on a hinge bracket provided on the back side of the seat back, the table body being provided on the back side of the seat back, and the cam member. A substantially U-shaped spring rod that holds a rotating state by using a substantially U-shaped spring rod. The tip of the rod is provided so as to be able to move back and forth along a guide rail provided on the table body, a plurality of beads are formed on the upper part of the rail portion of the guide rail on the table body side, and the tip side of the spring rod is provided with a plurality of beads. The table body is selectively locked to any one of the beads, so that the angle of the table body can be adjusted in use and the seat back can be adjusted. Seat back table structure, characterized by being adapted to be held substantially horizontal state table body in recline state.