JP2571379Y2 - Seat back structure for automotive seats - Google Patents

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 an automobile seat in which a table can be raised and lowered.

[0002]

2. Description of the Related Art When traveling a long distance by car,
Sometimes they write in the car, enjoy playing games such as card games, or eat meals.
In the case of large cars such as sightseeing buses, there is a built-in table inside the car for the purpose of drinking coffee or eating from the beginning, but in a small passenger car, the inside of the car is narrow and the table is small. It is not possible to secure the space for building the garbage. Therefore, there has been no small-sized automobile having a table in the room, which has been produced on a commercial basis except for a remodeled one for personal taste.

[0003]

[Problems to be solved by the invention] However, there are many requests from passengers for writing, playing games, eating and drinking while riding in a car, and in such a case, the use is stopped without a table without stopping. However, writing, playing, or eating or drinking without any support is extremely inconvenient. There was an inconvenience.

Therefore, for example, a storage space of a predetermined capacity is formed on the back of a seat back of an automobile seat, a folding table is stored therein, and the folded table is pulled out and set and used whenever necessary. Although it is conceivable that the seat back is tilted on the seat bottom, an inclination is usually formed on the back surface of the seat back. This inclination angle tends to increase as the seat becomes higher-grade, and the folding structure becomes complicated and expensive to arrange the table board on this inclination so as to always form a horizontal plane. In the end, such a folding table has never been provided on the back of the seat back.

The present invention has been made to solve the above-mentioned problems, and has a simple structure and an angle formed by folding a seat back on a seat bottom. It is an object of the present invention to provide a seat back structure for an automobile seat that can sufficiently cope with the problem.

[0006]

According to a first aspect of the present invention, there is provided a seat back structure for an automobile seat, wherein the seat back is foldably connected to a seat bottom. A concave portion is formed as a storage space in which a central portion is depressed in a state in which an edge portion is formed around the periphery, and a horizontal axis is provided at an upper end side of the concave portion in a vehicle width direction, and an upper end portion is formed on the horizontal axis. A rotatably supported table board is provided in the storage space so as to be freely retractable, and locking means for maintaining the table board pulled out of the storage space is provided. It is.

According to a second aspect of the present invention, there is provided a seat back structure for an automobile seat according to the first aspect, wherein the locking means has a base end located on a bottom portion of the storage space. It is characterized by being constituted by a projecting rod which is rotatably provided around and supports the table board, which is pivotally protruded from the storage space around a horizontal axis, and which is supported at its tip.

[0008]

According to the seat back structure for an automobile seat according to the first aspect, a concave portion is formed on the back surface of the seat back as a storage space in which a central portion is depressed with an edge portion formed around the seat back, A horizontal shaft is provided on the upper end side of the recess in the vehicle width direction, and a table board having an upper end rotatably supported by the horizontal shaft is provided in the storage space so as to be freely retractable. Is provided with a locking means for keeping the table board pulled out of the storage space, so that the table board can be rotated around the horizontal axis and stored in the seat back, and the seat back can be seated in the seat bottom. With the table board folded upward, the stored table board is rotated around a horizontal axis and pulled out of the seat back, and the table board is engaged by the locking means in a state where it is maintained in a horizontal posture. If the table is formed on the rear surface of the seat back.

According to the second aspect of the present invention, the locking means has a base end provided at the bottom of the storage space so as to be rotatable around an axis. Since it is composed of a projecting rod that supports the table board that is rotated around and protrudes at the tip, the tip of the projecting rod is pressed against the bottom surface of the drawn-out table board to support the table board. The easily pulled out table board can maintain the pulled out horizontal position.

[0010]

FIG. 1 is a perspective view showing an example of a seat to which a seat back structure for an automobile seat according to the present invention is applied. As shown in this figure, the seat S to which the present invention is applied is suitable in such a manner that the seat back S1 is folded over the seat back S2 and the seat back S1 is inclined. Specific examples include, but are not limited to, a driver's seat or a passenger seat.

As shown in FIG. 1, the seat S includes a seat bottom S2 as a seat and a seat back S1 as a backrest. On the bottom of the seat bottom S2, a slide rail S including an upper rail S4 fixed to the seat bottom S2 and a lower rail S5 fixed to the floor F is provided.
The seat S is made movable in the front-rear direction by operating the slide rail S3.

A pair of L-shaped brackets S6 are provided on both rear sides of the seat bottom S2, and a support shaft S7 is provided on a side piece protruding above the bracket S6. The base end of the seat back S1 is pivotally supported on the support shaft S7, and a position from a position where the seat back S1 is folded on the seat bottom S2 to a position where the seat back S1 stands upright as a backrest at a rear portion of the seat bottom S2. It is rotatable around the support shaft S7.

On the back surface of the seat back S1, there is provided a concave portion S8 whose central portion is depressed so as to leave a slight edge around it, and the concave portion S8 has a storage space 1 'corresponding to the depressed shape. The frame 1 on which is formed is fitted.
The frame body 1 projects outward so as to correspond to the bottom plate 11, the side wall 12, and the upper portion of the side wall 12 corresponding to the bottom portion of the concave portion S8. A step portion 14 is provided between the side wall 12 and the projecting portion 13 so as to make a round around the inner wall surface of the storage space 1 ′ of the frame 1.

The vehicle seat of the present invention is configured such that the table board 2 can be fitted into the storage space 1 'of the frame 1 attached to the seat back S1 as described above. The dimension of the table board 2 is the size of the opening of the storage space 1 ′ of the frame 1. When the table board 2 is fitted in the storage space 1 ′, the peripheral edge of the table board 2 is inside the storage space 1 ′. It is locked by the step 14 formed on the wall surface, and is prevented from falling down to the bottom plate 11 of the frame 1.

As shown in FIG. 2, a pair of brackets 23 in the vehicle width direction are provided at the upper end of the table board 2, and the brackets 23 are provided on the side wall of the storage space 1 'of the frame 1. It is rotatably supported around a horizontal shaft 22 provided therethrough.

A pair of crosspieces 21 are provided on both sides of the back surface in the vehicle width direction of the table board 2 in the front-rear direction. The crosspieces 21 have elongated holes 21 cut out in the longitudinal direction.
The locking groove 21b is provided on the inner peripheral surface of the elongated hole 21a on the table board 2 side.

On the other hand, a pair of brackets 3 in the vehicle width direction is provided at a portion of the frame 1 near the base end of the bottom plate 11.
A U-shaped rod 4 is attached to the bracket 3. That is, the center of the U-shaped rod 4
The shaft 41 is supported by the bracket 3, and both arms 42 of the U-shaped rod 4 are rotatable around the shaft 41.

A locking rod 43 is attached to the tip of both arms 42 of the U-shaped rod 4, and the locking rod 43 is a long hole 2 provided in the beam 21 of the table board 2.
1a, and the locking rod 43 moves in the elongated hole 21a according to the opening and closing of the table board 2. When fitted into the locking groove 21b provided in the elongated hole 21a, the movement of the locking rod 43 at a rough position, that is, the rotation of the side arm 42 of the U-shaped rod 4 around the axis 41, and consequently, The rotation of the table board 2 around the horizontal axis 22 is prevented, and the pulled out table board 2 is locked at that position.

That is, the U provided in the storage space 1 '
-Shaped rod 4 and locking rod 43 provided at the tip thereof
A locking means for locking the protruding posture of the table board 2 drawn out of the storage space 1 'is constituted by the crosspiece 21 having the long hole 21a and the locking groove 21b provided on the back surface of the table board 2. Have been.

A semicircular depression 16 is provided at the center of the right overhanging portion 13 of the frame 1, and a locking piece 15 that rotates about a vertical axis is provided in the depression 16. ing. A depression 24 corresponding to the depression 16 provided in the overhang 13 is provided at the center of the right edge of the table board 2. Then, with the table board 2 housed in the frame 1, the locking piece 15 in the recess 16 is turned around a vertical axis, and the side pieces enter the recess 24 of the table board 2. 2 is prevented from opening.

FIGS. 2 and 3 show the operation of the present invention.
This will be described based on FIG. FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 and shows a state in which the table board is stored in the seat back. FIG. 3 is a sectional view of the same, and shows a state in which the table board is pulled out of the seat back to form a table.

First, as shown in FIG. 2, in a state where the table board 2 is stored in the seat back S1 which has been folded down, the table board 2 is rotated clockwise around the horizontal axis 22 and its peripheral edge is rotated. Is stopped by the step portion 14 in the storage space 1 ′ of the frame 1. In addition, the locking piece 15 in the depression 16 provided in the overhang 13 of the frame 1 is turned around the vertical axis, and the end of the locking piece 15 is hung on the depression 24 of the table board 2. Is prevented from opening.

Then, the U-shaped rod 4 rotates counterclockwise around the axis 41, and a locking rod 43 provided at the tip thereof.
Are elongated holes 21 provided in the crosspiece 21 of the table board 2.
The state is located to the left of a.

In order to pull out the table board 2 from the state of being stored in the frame 1 of the seat back S1 as shown in FIG. 2, the locking piece 15 is first turned around a vertical axis to pull out the table board. 2 is released, and the right end of the table board 2 is pulled up. Then, the table board 2 rotates around the horizontal axis 22 and is pulled out of the storage space 1 ′ of the frame 1.

Accordingly, the locking rod 43 at the tip of the U-shaped rod 4 fitted into the elongated hole 21a of the crosspiece 21 moves rightward, so that the side arm 42 of the U-shaped rod 4 Then, the state where the table board 2 is pulled out by locking the locking rod 43 into the locking groove 21b of the predetermined crosspiece 21 is locked. The inclination angle of the table board 2 can be set by selecting one of the plurality of locking grooves 21b.

In order to store the table board 2 in the state shown in FIG. 3 in the seat back S1, the right end of the table board 2 is slightly lifted to release the locking of the locking rod 43 into the locking groove 21b. When the table board 2 is gently rotated clockwise about the horizontal axis 22 in this state, the U-shaped rod 4 rotates counterclockwise about the axis 41,
The table board 2 shown in FIG. 2 is stored in the frame 1 of the seat back S1.

As described above, the seat back structure of the vehicle seat according to the present invention is such that the table board 2 is provided rotatably around the horizontal axis 22 on the back surface of the seat back S1, so that the seat back structure is in a folded state. Therefore, the application to the seat back S1 in which an inclination is formed is optimal. The structure is extremely simple and the operability is good, so that it is not obstructed at the time of storage and the table is set immediately when necessary, so it is convenient and enhances the motor life. Useful for. ,

[0028]

As described above, the seat back structure for an automobile seat according to the present invention has a concave portion as a storage space in which a central portion is depressed in a state where an edge portion is formed around the back portion of the seat back. A horizontal shaft extending in the vehicle width direction is provided on the upper end side of the concave portion, and a table board whose upper end portion is rotatably supported on the horizontal shaft is provided so as to be able to protrude and retract into the storage space. Since the locking means for maintaining the table board pulled out of the storage space is provided, the table board can be rotated around the horizontal axis and stored in the seat back, and the seat back can be stored. In the state folded on the seat bottom, the stored table board is rotated around a horizontal axis and pulled out from the seat back, and the table board is held by the locking means while maintaining a horizontal posture. Easily table on the back of the seat back is formed by locking me.

Further, when the table board is stored, the table board is stored inside the seat back, so that it does not take up any space even in a narrow room of the car. The table board can be set horizontally regardless of the angle,
The utility value is extremely large in combination with the simple structure.

As the locking means, a base end is provided at the bottom of the storage space so as to be rotatable around an axis, and a projection supporting the table board, which is rotated from the storage space around a horizontal axis and supported by a distal end portion, is provided. By using a support rod, the tip of the protruding support rod is pressed against the bottom surface of the drawn-out table board to support it, so that the easily drawn-out table board can maintain the pulled-out horizontal position. It is convenient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a seat to which a seat back structure for an automobile seat according to the present invention is applied.

FIG. 2 is a sectional view taken along the line AA of FIG. 1, showing a state in which the table board is stored in a seat back.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1, showing a state in which the table board is pulled out of the seat back to form a table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 11 Bottom plate 2 Table board 21 Crosspiece 21a Elongated hole 21b Locking groove 22 Horizontal axis 3 Bracket 4 U-shaped rod 42 Side arm 43 Locking rod S Sheet S1 Seat back S2 Seat back S3 Slide rail

Claims (2)

(57) [Scope of request for utility model registration] An automobile seat in which a seat back is foldably connected to a seat bottom, a concave portion serving as a storage space in which a central portion is depressed at a rear surface of the seat back with an edge formed around the seat back. A horizontal axis is formed on the upper end side of the recess in the vehicle width direction, and a table board whose upper end is rotatably supported on the horizontal axis is provided in the storage space so as to be freely retractable, A seat back structure for an automobile seat, wherein a locking means for maintaining the table board pulled out of the storage space is provided. 2. The locking means according to claim 1, wherein a base end of the table board is rotatably provided on a bottom of the storage space around an axis, and the table board, which is turned around a horizontal axis and protrudes from the storage space, at a tip end. 2. The seat back structure for an automobile seat according to claim 1, wherein the seat back structure comprises a supporting rod.