JPH10100769A - Seat back stucture of car seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the rear surface of a seat back to be used as an accommodation part for a table. SOLUTION: A recess 12 is formed at the rear surface of a seat back 1 of a vehicle seat, and in the recess 12 a table 2 is accommodated as fitted removably. A detaining recess 25 is provided at the lower side face of a table board 21 and is fitted on the tip 831 of a striker 8 protruding at the lower edge member of the recess 12 so that locating of the table board 21 is established, and thereupon the top of the table board 21 is screwed fast to a bezel 74 located at the bottom surface of the recess 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat back structure for a vehicle seat, and more particularly to a seat back structure in which a back surface of a seat back is effectively used as a storage portion for a table plate.

[0002]

2. Description of the Related Art FIG. 13 is a perspective view of a two-seat bench seat frequently used in a van-type vehicle as viewed from the rear side. As shown in FIG. The backboard 9 made of a hard material such as a resin is attached to the recessed portion 13 while leaving the recess. Such a backboard 9 finishes the back of the seatback 1 and, as shown in FIG. 14, when the seatback 1 is folded forward by folding it over the seat cushion S1, the hard backboard 9 appears on the upper surface. The seat is prevented from being damaged by loaded luggage and the like.

[0003]

On the other hand, the use of van type vehicles as RV (recreational vehicle) vehicles for enjoying outdoor life has been expanding in recent years.
It is desired that a simple assembly table to be used outdoors can be loaded. However, since the table has poor stability when the legs are bent, it has been difficult to secure a storage section in consideration of other loaded luggage.

The present invention solves such a problem, and the back of the seat back of the vehicle seat is conventionally finished with a back board made of the same hard material as the assembly table, and has a relatively large area. However, in view of the current situation in which the seat back is not effectively used, an object of the present invention is to provide a seat back structure of a vehicle seat in which a seat back is used as a table storage unit.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a recess (12) is formed on the back of a seat back (1) of a vehicle seat (S), and the recess (1) is formed.
The table (2) is removably fitted and stored in 2).

In the first aspect of the present invention, the table is fitted and stored in the recess of the seat back, so that the table does not protrude from the back of the seat back. The back of the seat back is finished well by the plate. Further, since the back surface of the seat back is effectively used, there is no need to worry about securing a storage space for the table. The hard material table plate prevents sheet damage due to the loaded luggage when the sheet is folded.

In the second invention, the upper frame (42)
And the lower frame (43) and both frames (42, 4).
Left and right side frames (41) connecting the ends of 3)
And a plurality of wires (54, 55) provided between the front surfaces of the left and right side frames (41) to form a seat back frame (4). Covering with a pad material (61) having a predetermined thickness and a seat back skin (62) on the outside thereof, and covering a back surface of the seat back frame (4) with a cover (65) along the plurality of wires (54, 55); The cover (65) and the pad material (61) located around the cover (65)
To form a recess (12).

In the second aspect of the present invention, a recess for fitting and storing the table is easily formed on the back surface of the seat back, and if the cover is made of the same quality as the surface of the seat back, the design can be made even when the table is removed. The above discomfort does not occur.

In the third aspect of the present invention, the engaging projection (8) is provided on one side of the table plate (21) of the table (2) or one of the inner sides of the recess (12) facing the one side. The engaging plate (2) is provided on the other side of the table plate (2).
1) is positioned in the recess (12), and the other side surface of the table plate (21) is screw-fixed to a fixing seat (74) located on the bottom surface of the recess (12).

In the third aspect of the present invention, the table plate is first positioned by the engagement projections and the engagement recesses, and then fixed by screws, so that the table plate can be smoothly stored and fixed on the back surface of the seat back.

In the fourth invention, a guide member (8) having a hook shape in a side view is provided, and the long side (81, 8) of the guide member (8) is provided.
2) is arranged in an upright position along the cover (65) and is connected to the wire (55), and the short side (83) that is curved upward in a U shape from the lower end of the long side (81, 82) and extends upward. To
The lower frame (43) and the pad material (61) are made to penetrate and protrude into the recess (12), and the protruding end is used as an engagement protrusion (831).

In the fourth aspect of the present invention, the lower edge of the table plate contacts the long side of the guide member and is guided downward, and the engaging concave portion provided on the side surface of the table plate smoothly fits into the engaging convex portion. . Thereby, the positioning of the table plate in the recess is performed quickly.

[0013]

FIG. 1 is a perspective view of a vehicle seat S having a seat back structure according to the present invention as viewed from behind.
The figure shows a bench seat for two. The seat back 1 has a rectangular shape extending in the width direction, and a pair of headrest support openings 11 is provided on the left and right sides of the top surface. A rectangular table 2 is fitted and stored in the inner peripheral portion of the back surface of the seat back 1. That is, as shown in FIG. 2, a recess 12 is formed on the back surface of the seat back 1, and the shape and depth of the recess 12
The table 2 is fitted into the recess 12 with a structure to be described in detail later, and is fixed to the upper left and right two places by a lock knob 3.

As shown in FIG. 3, the table 2 removed from the back of the seat back 1 pulls out and rotates the U-shaped legs 22, 23 stored on the back of the table plate 21, and rotates these legs 22, 23. Are positioned and used by the foldable stays 24 attached thereto. The table plate 21 is formed into a thick hollow rectangular shape by blow molding of a resin material or the like, and the back surface thereof is depressed by a certain amount except for the outer peripheral portion so that the leg portions 22 and 23 can be folded and stored. I have. Engaging recesses 25 are formed at both ends on one longitudinal side surface of the table plate 21. In addition, mounting holes 26 are provided on the plate surface of the table plate 21 at corners opposite to the engaging recesses 25, respectively.
The lock knob 3 is located therein.

FIG. 4 shows a table 2 on the back side (right side in the figure).
1 is an overall vertical cross-sectional view of a seat back 1 in which a seat is stored. In the figure, the seat back 1 has a seat back frame 4 inside, and the seat back frame 4 has a half-part front surface as shown in FIG. (Only one is shown), and an upper frame 42 and a lower frame 43 that connect the side frames 41 at the upper and lower ends, and form a rectangular frame along the outer periphery of the seat back 1. The upper frame 42 and the lower frame 43 are joined by a center frame 44 at the center in the left-right direction (FIG. 6).

In FIG. 5, hobbing wires 51 and 52 are stretched along the lower edge of the upper frame 42 and the upper edge of the lower frame 43, respectively.
Both ends and the center of the first and second 52 are joined to the front surface (the side surface in FIG. 5) of the side frame 41 and the center frame 44, respectively. A hobbing wire 53 is stretched along the inner edge of the side frame 41 (FIG. 7), and its upper and lower ends are joined to the wires 51 and 52, respectively. In the middle position in the up-down direction, the pad back contact wire 5 in the left-right direction
4, 55 are stretched, and both ends and the center are joined to the left and right side frames 41 and the center frame 44, respectively.

In FIG. 4, the seat cover 6 includes a skin 61.
And a pad member 62 having a predetermined thickness behind the cover, and covers the outer periphery and the rear surface of the seat back frame 4 and the front of the space in the frame. Pad back contact wires 54 and 55 are in contact with the back of the pad material 61. The upper edge terminal 621 of the seat cover skin 62 extends along the inner periphery of the upper frame 42, and as shown in FIG.
The wire 623 inserted into the folded portion is fixed to the hobbing wire 51 by the fixing ring 63. Also, the lower edge terminal 622 of the seat cover skin 62.
The wire 624 extends along the inner periphery of the lower frame 43, and as shown in FIG. 10, the wire 624 inserted into the folded portion is fixed to the hobbing wire 52 by the fastening ring 64.

As shown in FIG. 5, cylindrical headrest supports 71 and 72 are provided at the left and right positions on the front surface of the upper frame 42 at each half of the seat back frame 4 (FIGS. 6 and 7). And the bracket 73
The bracket 73 has a lower end portion whose diameter is increased in the left-right direction, a circular opening 731 in the center, and mounting holes 73 in the left and right.
2,733 are formed. As shown in FIG.
As shown in FIG. 1, a resin bezel 74 serving as a mounting seat is fixed. The bezel 74 is fixed by screws so that the mounting holes 742 and 743 provided at both ends of the elliptical flange portion 741 (FIG. 12) are aligned with the mounting holes 732 and 733 of the bracket 73, and the center thereof is bent and formed into a cylindrical shape. Then, a female screw portion 744 is formed on the inner circumference of the cylinder.

The lock knob 3 provided on the table plate 21 side is made of resin, and the disk-shaped head 31 is recessed on both sides except for the center knob wall 311. The shaft portion 32 of the lock knob 3 has a cylindrical shape, and a cut 321 extending in the axial direction from the front end is formed on the side wall thereof, and a male screw portion 322 is formed on the outer periphery of the front end portion. A locking projection 323 is formed on the outer periphery of the shaft portion 32. The lock knob 3 is inserted into the mounting hole 26 of the table plate 21 by reducing the diameter of the shaft portion 32 by the cut 321.
2 returns to its original shape, and the locking projection 323 comes into contact with the peripheral edge of the mounting hole 26, and escape from the mounting hole 26 is prevented. The lock knob 3 is rotated by the knob wall 311, and the male screw portion 322 at the tip is screwed into the female screw portion 744 of the bezel 74 and fixed. At this time, the head 31 of the lock knob 3 is accommodated in the opening of the mounting hole 26 whose diameter is increased stepwise, and is substantially flush with the surface of the table plate 21.

An upper edge of a cover 65 is sandwiched between the bezel 74 and the bracket 73 (FIG. 4).
5 extends downward to cover the back of the pad backing portion wires 54 and 55, and as shown in FIG.
4 is attached and fixed to the hobbing wire 52. Both edges 653 of cover 65 (only one is shown in FIG. 8)
Is connected to the skin piece 67 by a fastener 66. The skin piece 67 is a band-shaped member extending in the vertical direction.
It is sewn to the side edge terminal 625 of the seat cover skin 62. The side edge terminal 625 is connected to the hobbing wire 53 by a fastening ring 68. In this manner, a rectangular recess 12 (see FIG. 2) having a certain depth is formed on the back surface of the seat back 1 and is surrounded by the pad material 61, the seat cover skin 62 covering the pad material 61, and the cover 65.

A striker 8 serving as a guide member is provided at the lower side of the seat back frame 7 facing the bracket 73.
(FIG. 5) is provided. The striker 8 is formed by bending a metal rod, and is bent in a hook shape in a side view (FIG. 7). The striker 8 is connected to the wire 55 at the upper and lower positions of long sides 81 and 82 (FIG. 5) extending upward in parallel. Bonded and fixed.
The short side 83 of the bracket 8 penetrates the lower frame 43, the pad material 61, and the seat cover skin 62 upward, and the tip 831 has a recess 12 (see FIG.
), And this tip 831 is an engaging projection.

When the table 2 is stored in the back of the seat back 1, the semi-circular section groove 211 on the back of the table plate 21 is used.
In FIG. 4, the leg portions 22 and 23 are folded and housed, and in this state, the back surface of the table board 21 is directed toward the seat back 1, and the engaging recess 25 is inserted into the striker 8 located in the seat back recess 12. Is fitted into the engaging projection 831. Thereafter, the upper side of the table plate 21 is pushed into the seat back recess 12, and the lock knob 3 located in the left and right mounting holes 26 is pressed.
Is screwed into the female screw portion 744 of the bezel 74 (FIG. 11). When the engaging concave portion 25 of the table plate 21 is fitted to the engaging convex portion 831, as shown by a chain line in FIG.
1 and 82, and is smoothly guided to the lower engaging projection 831.

In this manner, the table 2 can be stored by effectively utilizing the back surface of the seat back 1, and the stored table 2 can be replaced with a conventional back board by finishing the back surface of the seat back 1 and folding the seat back. Exhibits the function of preventing the seat from being damaged by the load at the time.

In the above embodiment, the engaging recess is provided on the table plate and the striker is provided on the seat back. However, the order may be reversed. In addition, the shape of the engaging projection is not limited to that of the above-described embodiment, and the shape is not particularly limited as long as the engaging projection is fitted to the engaging recess.

[0025]

As described above, according to the seat back structure of the present invention, the back surface of the seat back can be effectively used as a storage portion of the table, and the back surface of the seat back can be finished by the stored table plate. It is also possible to prevent damage due to the loaded luggage at the time of folding.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle seat, in which a table is stored in a seat back, as viewed from the rear.

FIG. 2 is an exploded perspective view of the vehicle seat as viewed from the rear.

FIG. 3 is a perspective view of the table in use.

FIG. 4 is a longitudinal sectional view of a seat back in which a table is stored.

FIG. 5 is a front view of the seat back frame as viewed from the rear.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 5;

FIG. 8 is a sectional view taken along line VIII-VIII of FIG.

FIG. 9 is an enlarged view of a portion A in FIG. 4;

FIG. 10 is an enlarged view of a portion B in FIG. 4;

11 is a cross-sectional view showing a state where the lock knob is connected to the bezel, and a bracket is a cross-sectional view along the line XI-XI in FIG.

FIG. 12 is a front view of a bezel.

FIG. 13 is a perspective view of a conventional vehicle seat as viewed from the rear.

FIG. 14 is a schematic side view of the vehicle seat with the seat back folded.

[Description of Signs] S: vehicle seat, 1: seat back, 12: recess, 2 ...
Table, 21 ... Table board, 25 ... engaging recess, 4 ... Seat back frame, 41 ... Side frame, 42 ... Upper frame, 43 ... Lower frame, 54, 55 ... Wire, 6 ... Seat cover, 61 ... Pad material, 62: seat cover skin, 65: cover, 74: bezel, 8: striker, 81, 82: long side, 831: engagement projection.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Matsuo Ishibashi 100 Kanayama, Ichiriyama-cho, Kariya-shi, Aichi Pref.

Claims (4)

[Claims] 1. A seat back (1) for a vehicle seat (S).
A seat back structure for a vehicle seat, wherein a recess (12) is formed on the back surface, and a table (2) is detachably fitted and housed in the recess (12). 2. An upper frame (42) and a lower frame (43), left and right side frames (41) connecting ends of both frames (42, 43), and front surfaces of the left and right side frames (41). A seat back frame (4) is constituted by a plurality of wires (54, 55) laid between them, and a front and outer periphery of the seat back frame (4) has a pad material (61) having a predetermined thickness and a seat outside the pad material. A cover (62) and a back surface of the seat back frame (4) are covered with a cover (65) along the plurality of wires (54, 55), and the cover (65) and the pad located therearound. The seat back structure for a vehicle seat according to claim 1, wherein the recess (12) is formed by a material (61). 3. A table plate (2) of the table (2).
1) An engaging projection (831) is provided on one side surface or one of inner surfaces of the recess (12) opposed to the one side surface, and an engaging recess (25) is provided on the other side. The projection (831) is fitted into the engagement recess (25) to position the table plate (21) in the recess (12), and the other side surface of the table plate (21) is placed in the recess. 3. The seat back structure for a vehicle seat according to claim 1, wherein a screw is fixed to a fixing seat (74) located on a bottom surface of the recess (12). 4. A guide member (8) having a hook shape in a side view is provided, and the long sides (81, 82) of the guide member (8) are arranged in an upright posture along the cover (65). Wire (5
5), and a short side (83) that is curved in a U-shape and extends upward from the lower end of the long side (81, 82).
4. The vehicle seat according to claim 3, wherein the lower frame (43) and the pad material (61) penetrate and protrude into the recess (12), and the protruding end is the engaging protrusion (831). 5. Seat back structure.