JPH08169267A - Seat back table - Google Patents

Abstract

PURPOSE: To provide a seat back table allowing a table body to be folded in such a state as not projected over the upper end of a seat body without lowering the set height of table top in drawing out the table body, when the length thereof is enlarged. CONSTITUTION: This table has a bracket 17 for supporting a table body 15, and this body 15 is held on the bracket 17, so as to be foldable and drawable. A fastener link 19 is provided on the wall of the bracket 17 along a vertical direction, and the shortest link 21 is fitted to the wall of the body 15 along a lengthwise direction. In addition, the links 19 and 21 are jointed to each other via a short lever (sub-lever) 23 at a lower position and a long lever (main lever) 25 at an upper position. The body 15 is held on the bracket 17, so as to be foldable and drawable via the leverage mechanism motions of both levers 23 and 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat back table which is used by being attached to a seat back or the like of a front seat of an automobile.

In this specification, the up-down and front-rear directions are based on the time of attachment to the seat back unless otherwise specified.

[0003]

2. Description of the Related Art A seat back table of this type is mounted on a seat back and supports a table main body, and the table main body can be folded (closed) or pulled out (open) with respect to the mounting support plate. It is a configuration that is retained.

Usually, it is mounted via a rod-shaped mounting leg of a headrest, and the table main body is conventionally a method of folding (closing) / drawing (opening) the mounting support plate with the lower end of the table main body as a pivot. It was Therefore,
The height of the table surface when pulled out was substantially the same as the height of the lower end of the table body when folded.

[0005]

However, in the case of this method, when the size of the table surface is large, that is, when the length of the table body (the front-rear direction at the time of pulling out) is lengthened, the table surface setting height at the time of pulling out is high. If the conventional method is used without lowering the height, the table body when folded is in a state of protruding upward from the upper end of the sheet body, which is not desirable in terms of design.

Further, the mechanism is such that the stopper mechanism works only in the horizontal position with the lower end of the table main body as the fulcrum of rotation.
As far as the present inventors know, there is no seat back table provided with a simple mechanism capable of adjusting the horizontal angle of the table body. In many cases, it is necessary to adjust the level of the table surface according to the inclination angle of the seat, and it is desired that the level of the table surface can be adjusted with a simple mechanism.

In view of the above, in the present invention according to claim 1, when the length of the table body is increased, the set height of the table surface at the time of pulling out is not lowered and the table body is not projected upward from the upper end. An object of the present invention is to provide a seat back table in which the table body can be folded.

It is an object of the present invention to provide a seat back table which allows a simple mechanism for adjusting the level of the table surface when the table body is pulled out.

[0009]

[Means for Solving the Problems]

(1) The seat back table of the present invention according to claim 1 is
The above problem is solved by the following configuration.

A seat back table attached to a seat back for supporting a table body, and a seat back table configured to hold the table body so that the table body can be folded (closed) and pulled out (open) with respect to the mounting support plate. , Having fixed links in the vertical direction of the wall surface of the mounting support plate, and having shortest links in the front-back direction of the wall surface of the table body,
Between the fixed link and the shortest link, the lower side is a short lever,
The upper side is connected by a long lever, and the table body is held so as to be foldable (closed) and pulled out (opened) with respect to the mounting support plate by both lever mechanism movements.

(2) A seat back table according to a second aspect of the present invention solves the above problems by the following configuration.

According to the present invention, a lock pin is formed at a substantially central position of the short lever, and a lock pin receiving portion which is spring-fitted to the lock pin when the table is pulled out is arranged on the mounting support plate so as to be vertically movable. The table surface level is adjustable.

(2) A seat back table according to a third aspect of the present invention solves the above problems by the following configuration.

According to the first aspect of the present invention, when the table is pulled out, a lock spring plate having a curved lock portion for supporting the base end of the table is disposed on the mounting support plate so as to be vertically adjustable, and the table surface is horizontal. The feature is that the degree is adjustable.

[0015]

The present invention will be described in detail below with reference to the drawings.

(1) The seat back table of this embodiment is
As a premise, the headrest 14 and the like can be attached to the seat back 13 such as the front seat 11 and the like, and the mounting support plate 17 that supports the table body 15 and the table body 15 can be mounted on the mounting support plate 17. On the other hand, it has a configuration in which it is held so that it can be folded (closed) and pulled out (open). (See FIG. 1) (2) In this embodiment, the mounting support plate 1 has the above-described configuration.
7 has a fixed link 19 in the vertical direction of the wall surface, and a shortest link 21 in the front-back direction of the wall surface of the table body 15, and the lower side between the fixed link 19 and the shortest link 21 is a short lever (sub-lever) 23. Then, the upper lever is the long lever (main lever) 25
The table main body 15 is held so that it can be folded (closed) and pulled out (open) with respect to the mounting support plate 17 by the movement of both lever mechanisms which is one of the movements of the four-bar rotation mechanism (link device). . (See FIG. 2) Here, the length of each link satisfies the following condition in FIG. 2 (b).

B + c <a + d, c + d> a + b, b <
c and d, which also serves as a stable hold of the table body and an angle adjustment,
It also has the following configuration (lock mechanism).

A lock pin 27 is provided at an intermediate position of the short lever 23.
The lock pin 27 is formed when the table is pulled out.
A lock pin receiving portion 29, which is spring-fitted to, is arranged on the mounting support plate 17 so as to be vertically adjustable (see FIGS. 2 to 3).

(3) Further, a specific structure will be described mainly with reference to FIGS.

The short levers (sub-lever) 23, 23 are of an integrated ladder type (see FIG. 5) with the middles connected, and the fixed side is formed at the mounting support plate (seat back panel) 17 and the lower end near the center position. It is connected to the mounting support plate 17 via a pivot 33 supported on both side walls of the short lever holding recess 31, and the rotating side is downward facing the short lever holding recess 31 of the mounting support plate (seat back panel) 17. The pin receiving portions 39, 39 formed on the short lever 23 are fitted and pin-connected to the pin portions 37, 37 formed on the opposing walls in the short lever holding concave portion 35 formed on the. In addition, the short pin 23 has a lock pin 27 which is bridged at a substantially central position (see FIGS. 4 to 5).

The long levers (main levers) 25, 25
The fixed side is connected to the upper end side of the long lever storage groove 43 formed near the inner side ends of the mounting support plate 17 by a pin 45, and the rotating side is connected to the table body 15 by the long lever storage groove of the mounting support plate 17. A pin 45 is connected to the lower end side of a long lever storage groove 46 formed on the lower side of the facing side of 43. (Mainly refer to FIG. 6) Then, above the mounting position of the short lever 23 of the mounting support plate 17, the lock pin receiving portion 29 is moved up and down to the stays 47 and 4 at the rotation locus position of the lock pin 27.
Adjustment bolt 5 that moves up and down with the adjustment nut 49 regulated by 7.
It is pin-coupled to the lower end of 0.

(4) In this embodiment, although not necessarily required, the cup holder 51 is provided on the wall surface of the mounting support plate 17 on the side opposite to the side where the short lever 23 is arranged with the center line interposed therebetween. It is possible to slide out along the arc-shaped guide groove 53 via the guide protrusions 52 formed on both side walls. (Refer mainly to FIG. 7) A stopper wall 55 is formed at the upper end of the guide groove 53, and a locking projection 59 that locks with the locking recess 57 at the base end of the cup holder 51 is formed, so that the cup holder pulled out state is stable. It can be held. Further, from the viewpoint of maintaining the holding stability during storage, the locking projections 60 corresponding to the locking recesses 57 during storage of the cup holder 51 are formed on both side walls below the cup holder storage recess 61 of the mounting support plate 17. Has been done.

(5) From the viewpoint of ensuring stability when mounted on the seat back 13 of the mounting support plate 17, the side panels 63 are integrated on both sides with the tapping screws 67 via the boss portions 65, and A mounting stay 73 having a hook 71 fitted on the mounting portion of the headrest 14 on the lower side is also integrated with a tapping screw 67 via a boss portion 65.

Further, a magnet catch 75 is attached to the upper end portion of the center line of the mounting support plate 17, and a magnet keeper 77 is attached to the front end of the center portion of the table body 15 correspondingly, so that the seat back table is kept in a folded state. It is possible. A table sheet 79 is detachably attached to the table surface of the table body 15 with a clip portion 81 for easy cleaning.

The mounting support plate 17, side panel 63, table body 15, cup holder 61, etc.
Synthetic resin such as ABS resin, polyoxymethylene, polyamide, polyacetal, etc., levers 23, 25, stay 4
7, 73, etc. are formed for metal materials such as steel.

(6) FIGS. 8 to 10 show another mode of the lock mechanism that both stably holds the table body and adjusts the angle. The same parts as those of the above-mentioned locking mechanism are designated by the same reference numerals, and the description thereof will be omitted in whole or part.

Basically, when the table is pulled out, the bending lock portion 30a which supports the base end of the table body 15 is provided.
A lock spring plate 30 provided with is attached to the mounting support plate 17 so as to be vertically adjustable. That is, when the table is pulled out, the curved lock portion 30a of the lock spring plate 30 can support the lower surface of the base end portion of the table body 15, and the lock spring plate 30 replaces the lock pin receiving portion 29 and the tip of the adjusting bolt 50. Is attached to.

Specifically, at the tip of the adjusting bolt 50,
Similar to the lock pin receiving portion 29, the support plate holding block 32
The lock spring plate 30 is pinned to and is held by the sandwiching plate 34 by sandwiching the base bent portion 30b. Naturally, in this embodiment, the lock pin 27 is eliminated. Although the support portions 30a are formed only at both ends of the lock spring plate 30, the lock spring plate 30 may have the full width or may be formed in the middle portion to have a three-piece structure.

Further, the lock for pulling out the table main body is attached to the tip of the adjusting bolt 50 of the table leveling degree adjusting mechanism. However, when the table adjusting degree leveling mechanism is not provided, it is used at another position or in another conventional manner. A lock mechanism may be provided.

(7) Next, the mode of use of the above embodiment will be described.

To attach the headrest to the headrest, with the headrest removed, set the attaching stay on the headrest attaching portion via the hook, and then insert the headrest again.

When the table is used, the magnet catch 75 is released and the table body 15 is rotated so as to be pulled out to the front.

Then, the link moves the lever mechanism which is one of the four-bar rotation mechanism, and the table body 15 is temporarily rotated while the short lever 23 is mechanically aligned with the shortest link 21. However, when the table body 15 is further lowered, the short lever 23 and the shortest link 21 are bent upward, the lock pin 27 is spring-fitted to the lock pin receiving portion 29, and the table body 15 is fixed.

In the case of FIGS. 8 to 10, the lock spring plate 3
After the 0 bends backward in the table body 15, the curved lock portion (support portion) 30 of the lock spring plate 30 engages and supports the lower surface of the base end portion of the table body 15 to fix the table body 15. (See Figure 10).

In this state, the adjusting nut 49 is rotated left and right to slightly rotate the short lever 23 up and down to adjust the levelness of the table surface.

The cup holder 61 is used by gently grasping the upper part and pulling it toward you. When closing (folding) the table, the lock pin 2 can be pushed by pushing up the tip side of the table body 15 with the cup holder 51 stored.
The engagement of the lock lever 7 with the lock pin receiving portion 29 is released, the short lever 23 is aligned with the shortest link 21, and the long lever 25 and the short lever 23 are pivoted upward to be in the housed state. Magnetic catch 7 at the top
It is fixed at 5 and folded.

[0037]

[Operation and effect of the invention]

(1) The seat back table of the present invention according to claim 1 is
As described above, the mounting support plate that is mounted on the seat back and supports the table body, and the seat back table configured to fold (close) and pull out (open) the table body with respect to the mounting support plate. In the above, a fixed link is provided in the vertical direction of the wall surface of the mounting support plate, and a shortest link is provided in the front-back direction of the wall surface of the table body.
Between the fixed link and the shortest link, the lower side is a short lever,
Since the upper side is connected by a long lever and the table body is held so that it can be folded (closed) and pulled out (opened) with respect to the mounting support plate by the movement of both lever mechanisms, the height when the table body is pulled out Fold the table (closed)
It can be brought above the lower end position (rotational fulcrum position) of the table body. Therefore, in the seat back table of the present invention, when the length of the table main body is increased, the table main body can be folded so as not to project upward from the upper end of the seat main body without lowering the set height of the table surface when pulled out. You can

(2) The seat back table according to a second aspect of the present invention is the seat back table according to the first aspect, wherein a lock pin is formed at an intermediate position of the short lever, and the lock pin is spring-fitted to the lock pin when the table is pulled out. With the configuration in which the receiving portion is arranged on the mounting support plate so as to be vertically adjustable and movable, and the table surface levelness can be adjusted, the table surface levelness can be adjusted with a simple mechanism when the table body is pulled out.

(3) A seat back table according to a third aspect of the present invention is the seat back table according to the first aspect, wherein a lock spring plate having a front curved lock portion for supporting a base end of the table body when the table is pulled out, The table surface leveling degree when the table body is pulled out can be adjusted by a simpler mechanism than that according to claim 2 by the configuration in which the table surface leveling degree is adjustable on the mounting support plate so as to be vertically movable. Therefore, the lock mechanism can be widely adopted such as two-point support, and the twisting of the table body can be easily prevented. Further, the locking action is also reliable because it is supported from one side from below rather than from both sides as in claim 2.

[Brief description of drawings]

FIG. 1 is a perspective view of a use mode of a seat back table according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a link mechanism of the seat back table of the present invention.

FIG. 3 is a front view of the seat back table according to the embodiment of the present invention when the seat back table is folded.

FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG.

FIG. 5 is a sectional view taken along line 5-5 of FIG. 4;

6 is an enlarged sectional view taken along line 6-6 of FIG.

FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG.

FIG. 8 is a cross-sectional view of the lock mechanism shown in FIG. 4 in another mode.

9 is a perspective view of a main part of the lock mechanism of FIG.

10 is an explanatory view of a mechanism when the table is pulled out in FIG.

[Explanation of symbols]

 13 seat back 15 table body 17 mounting support plate 19 fixed link 21 shortest link 23 short lever (sub lever) 25 long lever (main lever) 27 lock pin 29 lock pin receiving portion 30 lock spring plate 30a curved lock portion 49 adjusting nut 50 Adjusting bolt

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akiyoshi Sato 1 Nagachihata, Ochiai, Kasuga-cho, Nishikasugai-gun, Aichi Toyoda Gosei Co., Ltd. Techno Art Research Co., Ltd.

Claims (3)

[Claims] 1. A mounting support plate that is mounted on a seat back and supports a table body, and the table body is folded (closed) / drawn (open) with respect to the mounting support plate.
In a seat back table configured to be held so as to have a fixed link in a vertical direction of a wall surface of the mounting support plate, a shortest link in a front-back direction of a wall surface of the table body, and the fixed link and the shortest link. The lower part is connected with a short lever and the upper part is connected with a long lever, and the table body is held so as to be foldable (closed) / pulled out (open) with respect to the mounting support plate by both lever mechanism movements. A seat back table characterized in that. 2. The mounting support plate according to claim 1, wherein a lock pin is formed at an intermediate position of the short lever, and a lock pin receiving portion, which is spring-fitted to the lock pin when the table is pulled out, is vertically adjustable and movable. The seat back table is characterized in that the levelness of the table surface is adjustable. 3. A lock spring plate having a curved lock portion for supporting a base end of the table when the table is pulled out, according to claim 1, wherein the lock spring plate is arranged on the mounting support plate so as to be vertically adjustable. A seat back table characterized in that the levelness of the table surface is adjustable.