JP2002187472A - Table structure of seat back - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and quickly make a table main body in a using state and storing state, and easily adjust an angle thereof. SOLUTION: The tip 45b of a roughly U-shape spring member 45 is provided along a guide rail 37 provided in a table main body 35 so as to be movable in the longitudinal direction. The guide rail 37 is provided so as to be adjustable the longitudinal movement to the table main body 35 by a longitudinal movement adjusting mechanism 51. A longitudinal movement adjusting mechanism 11 is fixed on a back face side of the table main body 35 in a state where a guide rod 53 projects downward, and a guide groove 55 is formed along the longitudinal direction of a guide part 38 of the guide rail 37. The guide groove 55 is formed so as to penetrate in the vertical direction, and the guide rod 53 is inserted into the guide groove 55. A female screw part 57 is formed in the lower part of the guide rail 37, and a screw rod 59 is screwed with the female part 57. An operation knob 61 is formed at the tip of the screw rod 59.

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.

The conventional table structure of a seat back includes a table body rotatably supported by a pair of left and right hinge brackets provided on both sides of the seat back. The table body is formed of a substantially linear plate-like body or the like along the flat back surface of the seat back.

FIGS. 5 (a) and 5 (b) and FIGS.
As shown in (b), a cam member 1 is provided on the back side of the seat back.
1 and a substantially U-shaped spring rod 13 which keeps the rotating state by a semicircular cam 12 having an arc-shaped cross section on both sides of the cam member 11 is pivotally supported by the cam member 11 so as to be rotatable.
Japanese Patent Application Laid-Open No. HEI 12-17746 discloses a configuration in which the distal end of the substantially U-shaped spring rod 13 is provided so as to be able to move back and forth along a guide rail 15 provided on the lower surface of the table body 7.
No. 4 and the like.

[0005] As shown in FIG.
The table body 7 is held in a stored 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. 5A and 5B, the table body is in a state in which a substantially U-shaped spring rod 13 is biased 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 occupant of the rear seat 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.

[0007]

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 rotation locus of the spring rod 13 is constant, and the angle of the table body 7 cannot be adjusted. Therefore, when the tilt angle of the seat back 3 is changed when the table body 7 is in use, There is a danger that the table body 7 is inclined and that the luggage placed on the table body 7 may fall or drinks such as cups may be spilled, and the seating posture of the seated person with the table seat is limited. Had.

SUMMARY OF THE INVENTION It is an object of the present invention to easily and quickly bring a table body into a use state and a stowed state, and in the use state of the table body, the table body can be seated even if a rear seated person collides with the table body. 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 the occupant.

[0009]

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 portion of a guide rail provided on the table body, and the guide rail is adjustable to move forward and backward with respect to the table body by a forward and backward movement adjustment mechanism. Wherein the angle of the table body can be adjusted in use.

In the seat back table structure according to a second aspect of the present invention, the front / rear movement adjusting mechanism of the guide rail is fixed to a back surface of the table body with a guide rod projecting downward. A guide groove is formed along the longitudinal direction of the guide portion of the guide rail, the guide groove is formed to penetrate vertically, the guide rod is inserted into the guide groove, and a female screw portion is provided at a lower portion of the guide rail. A screw rod is screwed into the female screw portion, an operation knob is formed at the tip of the screw rod, and the guide rail is adjusted to move back and forth with respect to the table body by turning the operation knob. I do.

According to a third aspect of the present invention, there is provided a table structure for a seat back, wherein the shaft of the screw rod is pivotally supported by the guide rod, and the operation knob is provided in front of the guide rod. Features.

According to the seat back table structure 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 the guide portion of the guide rail provided on the table body. The guide rail is provided so as to be adjustable in the front-rear direction by a front-rear movement adjusting mechanism with respect to the table main body, and the angle can be adjusted in a use state of the table main body. Adjustment by the back and forth movement adjustment mechanism, changing the rotation trajectory of the spring rod, easily adjusting the angle of the table main body, there is no danger of spilling beverages such as cups placed on the table main body, There is no danger of restricting the seated posture of the seated person, and the livability in the vehicle interior can be improved.

According to the seatback table structure of the second aspect of the present invention, the guide rail front-rear movement adjusting mechanism is fixed to the back surface of the table body with a guide rod protruding downward. A guide groove is formed along the longitudinal direction of the guide portion of the guide rail, the guide groove is formed to penetrate vertically, the guide rod is inserted into the guide groove, and a female screw portion is provided at a lower portion of the guide rail. A screw rod is screwed into the female screw portion, an operation knob is formed at the tip of the screw rod, and the guide rail is adjusted to move back and forth with respect to the table body by turning the operation knob. The guide rail is moved back and forth with respect to the table body by the rotation of the table, the rotation locus of the spring rod is changed, and the angle of the table body can be easily adjusted. There is no drink spilling possibility of such cup, there is no possibility to limit the seated posture of the seated person of the table with a sheet, it is possible to improve the comfort of the passenger compartment.

According to the seat back table structure of the third aspect of the present invention, the shaft of the screw rod is pivotally supported by the guide rod, and the operation knob is provided in front of the guide rod. By rotating the operation knob, the position of the guide rail with respect to the table body is adjusted back and forth, the rotation locus of the spring rod is changed, and the number of parts is increased because the shaft of the screw rod is pivotally supported by the guide rod. The screw rod can be supported without the need.

[0015]

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 4
(A), (b), and (c) show an embodiment of a table structure of a seat back according to the present invention, respectively, and in this embodiment, a case where the present invention is applied to a vehicle seat will be described. However, the present invention is not limited to this, and can be applied to various sheets.

As shown in FIG. 1, a 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 pair of left and right sides provided on the rear side of the seat back 23. A table body 35 pivotally supported by the hinge bracket 33 is provided.

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 body 35 can be formed with a mounting section having a concave cross section.

As shown in FIG. 1, a cam member similar to that shown in FIGS. 6 (a) and 6 (b) is provided on the back side of the seat back 23 which faces between the pair of left and right hinge brackets 33 of the table body 35. A guide rail 3 provided with a spring rod 45 made of a substantially U-shaped wire spring or the like, which is held in a rotating state by the cam member 41, is provided on the back side of the table main body 35 so as to be able to move back and forth.
7 is inserted into the guide portion 38.

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, and is pivotally supported on the upper end side of the hemispherical cam 43 of the cam member 41. I have.

As shown in FIGS. 2 and 3, the guide rail 37 is provided so as to be adjustable in forward and backward movement by a forward and backward movement adjusting mechanism 51 provided on the back side of the table body 35, and the guide rail 37 is used when the table body 35 is in use. The angle can be adjusted. The front-rear movement adjustment mechanism 51 of the guide rail 37 includes a guide rod 53 fixed to the back surface of the table body 35 so as to protrude downward.

The guide portion 3 of the guide rail 37
8, a guide groove 55 is formed along the longitudinal direction, and the guide groove 55 is formed so as to penetrate in the up-down direction. The guide rod 53 is inserted into the guide groove 55 so as to be movable back and forth.

A female screw 5 is provided below the guide rail 37.
7, a screw rod 59 is screwed into the female screw portion 57, and an operation knob 61 is formed at the tip of the screw rod 59. The shaft 59a of the screw rod 59 is
An operation knob 61 is provided in front of the guide rod 53. By turning the operation knob 61, the guide rail 37 is adjusted to move back and forth with respect to the table body 35.

The guide rail 37 is used for the table body 35.
, The length of the guide rail 37 that guides the tip 45b side of the spring rod 45 is adjusted, the rotation locus of the spring rod 45 is changed, and the angle adjustment of the table body 35 is facilitated. Can be done.

Therefore, as shown in FIG. 4B, the operation knob 61 is rotated in one direction from the state where the table body 35 is at the reference position, and the guide rail 37 is separated from the operation knob 61 by the guide groove 55. Moving in the direction shown in FIG.
As shown in (c), the angle of the table body 35 can be adjusted to be inclined downward, and in this state, the seat back 23 can be set up.

When the operation knob 61 is rotated in the other direction from the state shown in FIG. 4B and the guide rail 37 is moved in the direction approaching the operation knob 61 by the guide groove 55, the state shown in FIG. As shown in the figure, the angle of the table body 35 can be adjusted upward, and in this state, the seat back 23 can be set to the rearwardly inclined state. The adjustment can be performed steplessly by turning the operation knob 57 of the forward / backward movement adjusting mechanism 51, and the configuration of the forward / backward movement adjusting mechanism 51 is not limited to the illustrated one, and various configurations are adopted. be able to.

[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 front end is provided so as to be able to move back and forth along a guide portion of a guide rail provided on the table body, and the guide rail is provided so as to be able to move forward and backward with respect to the table body by a front and rear movement adjustment mechanism. Since the angle adjustment in the state is made possible, the guide rail is adjusted with respect to the table body by the front and rear movement adjustment mechanism, the rotation locus of the spring rod is changed, and the table body angle can be easily adjusted. There is no danger of spilling beverages such as cups placed on the main body,
There is no risk of restricting the sitting posture of the seated person of the seat with the table, and the livability in the vehicle interior can be improved.

According to the seat back table structure of the second aspect of the present invention, the guide rail front-rear movement adjusting mechanism is fixed to the back side of the table body with the guide rod projecting downward, A guide groove is formed along the longitudinal direction of the guide portion of the guide rail, the guide groove is formed to penetrate vertically, the guide rod is inserted into the guide groove, and a female screw portion is provided at a lower portion of the guide rail. A screw rod is screwed into the female screw portion, an operation knob is formed at the tip of the screw rod, and the guide rail is adjusted to move back and forth with respect to the table body by turning the operation knob. The guide rail is moved back and forth with respect to the table body by the rotation of the table, the rotation locus of the spring rod is changed, and the angle of the table body can be easily adjusted. There is no drink spilling possibility of such cup, there is no possibility to limit the seated posture of the seated person of the table with a sheet, it is possible to improve the comfort of the passenger compartment.

According to the table structure of the seat back according to the third aspect of the present invention, the shaft of the screw rod is pivotally supported by the guide rod, and the operation knob is provided in front of the guide rod. By rotating the operation knob, the position of the guide rail with respect to the table body is adjusted back and forth, the rotation locus of the spring rod is changed, and the number of parts is increased because the shaft of the screw rod is pivotally supported by the guide rod. The screw rod can be supported without the need.

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 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 Thus, there is no risk of restricting the sitting posture of the occupant, and the table structure of the seat back that can improve the livability in the vehicle interior can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle seat to which a seat back table structure according to the present invention is applied.

FIG. 2 is an explanatory perspective view of a front-back movement adjusting mechanism of a table structure of a seat back according to the present invention.

FIG. 3 is an explanatory side view of a longitudinal movement adjusting mechanism of the table structure of the seat back according to the present invention.

FIGS. 4A and 4B respectively show an operation state of a front-rear movement adjustment mechanism of a table structure of a seat back according to the present invention, wherein FIG. FIG. 3C is a side view of the position, and FIG.

5A and 5B show a table structure of a conventional seat back, respectively, in which FIG.
(B) is a side view of the use state of a table main body.

6A and 6B show cam members having a table structure of a conventional seat back, respectively. FIG. 6A is a front view of a stored state of a table body, and FIG. 6B is a front view of a used state of the table body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Vehicle seat 23 Seat back 31 Table structure 33 Hinge bracket 35 Table main body 37 Guide rail 38 Guide part 41 Cam member 43 Hemispherical cam 45 Spring rod 45a Base end 45b Tip 51 Front-back movement adjustment mechanism 53 Guide rod 55 Guide groove 57 Female screw Part 59 Screw rod 59a Shaft part 61 Operation knob

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 tip of the rod is provided so as to be able to move back and forth along a guide portion of a guide rail provided on the table body, and the guide rail is provided so as to be able to adjust the front and rear movement with respect to the table body by a front and rear movement adjustment mechanism. The table structure of the seat back, wherein the angle can be adjusted in the use condition of the seat back. 2. The guide rail front-rear movement adjusting mechanism is fixed to the back surface of the table body with a guide rod projecting downward, and a guide groove is formed along a longitudinal direction of a guide portion of the guide rail. The guide groove is formed to penetrate vertically, the guide rod is inserted into the guide groove, and a female screw portion is provided at a lower portion of the guide rail,
A screw rod is screwed into the female screw portion, an operation knob is formed at a tip of the screw rod, and the guide rail is adjusted to move back and forth with respect to the table body by turning the operation knob. 2. The table structure of the seat back according to 1. 3. The seat back according to claim 1, wherein a shaft portion of the screw rod is pivotally supported by the guide rod, and an operation knob is provided in front of the guide rod. Table structure.