JP2002369728A - Head rest support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the removal of a head rest as required in the repairs of a seat or the like by blocking a leg part of a head rest stay from slipping off the head rest support in the ordinary handling. SOLUTION: In the head rest support, the leg part 12 of the head rest stay 11 is inserted into a support body 24 provided on a seat back so as to be adjustable in vertical position, the support body 24 is provided with a stopper means (e.g. retaining part 34) which serves to prevent the leg part of the head rest stay 11 from slipping off the support body 24 by locking the leg part 12 pertaining to the direction of the leg part 12 slips off. The stopper means is so arranged as to allow the unlocking of the leg part 12 therefrom only by using a tool.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest support for a vehicle seat and, more particularly, to a headrest support for supporting a headrest whose vertical position can be adjusted.

[0002]

2. Description of the Related Art In a general headrest support, a support body is assembled to a pair of support brackets fixed to a seat back frame. Then, both legs of a gate-shaped headrest stay provided on the headrest and having a pair of legs connected by a connecting portion are inserted into these support bodies so as to be slidable in the vertical direction. In order to adjust the vertical position of the headrest, one of the support bodies has an adjusting lock mechanism that can lock the headrest stay in two or three levels. Generally, the adjustment lock mechanism is unlocked by pressing an operation member provided on the support body, and the headrest stay can be slid up and down. Note that the other support body is configured such that the headrest stay can slide freely in consideration of the operability when adjusting the vertical position of the headrest.

[0003]

In the conventional headrest support, when the operating member of the adjusting lock mechanism is pushed to release the lock, the headrest stay comes off easily from the support body, and the headrest is seat backed. Get off. Therefore, it is conceivable to employ a stopper for preventing the headrest stay from being pulled out of the support main body, but this makes it difficult to remove the headrest from the seat back when repairing the seat. The present invention is intended to solve the above-mentioned problem, and its purpose is to prevent the headrest stay from coming out of the headrest support in normal handling, and to remove the headrest as necessary at the time of repairing a seat or the like. Is to make it possible.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object. According to the first aspect of the present invention, a pair of support bodies provided on a seat back are provided with a pair of legs connected to each other. The headrest stay connected by a leg portion of the headrest support is vertically inserted to adjust the position of the headrest, one of the support body is provided with an adjusting means capable of adjusting the headrest to a predetermined position in the vertical direction,
The other of the support bodies includes stopper means for preventing the legs of the headrest stay from coming off. By the stopper means, it is possible to prevent the legs of the headrest stay from coming out of the headrest support by ordinary handling such as unlocking the adjusting means for adjusting the vertical position of the headrest, and the headrest can be seated. It can be prevented from coming off the back. Further, since one of the support bodies has the adjusting means and the other has the stopper means, a reasonable design is possible.

According to a second aspect of the present invention, there is provided a headrest support wherein a leg portion of a headrest stay is inserted into a support body provided on a seat back so as to be adjustable in a vertical position. Stoppers are provided for locking the legs in the direction in which the legs of the headrest stay come off from the main body to prevent the legs from coming off. The stopper means can unlock the leg only by using a tool. According to this configuration, it is possible to prevent the legs of the headrest stay from coming out of the headrest support by the stopper means, and when necessary for repairing the seat, use a tool to move the headrest from the headrest. Can be easily removed.

According to a third aspect of the present invention, there is provided the headrest support according to the second aspect, wherein the stopper means includes a lock member incorporated in the support body and the headrest formed on the lock member. A locking portion that can be locked to a cutout portion of a leg portion of a stay, and a tool insertion portion into which a tool can be inserted from outside the support body to release the lock of the locking portion with respect to the cutout portion And This allows
The structure for removing the headrest from the seat back when the seat is repaired or the like is simplified. The tool insertion portion is generally a hole or a groove penetrating from the outside of the support main body to the position of the locking portion.
It is reasonable that these are formed on the lock member, but they may also be formed on the support body.

According to a fourth aspect of the present invention, there is provided the headrest support according to the third aspect, wherein the support body and the lock member are made of the same material. In this case, it is possible to suppress an increase in the number of parts to be separated when recycling or discarding the parts when the sheet is disassembled.

According to a fifth aspect of the present invention, there is provided the headrest support according to the second aspect, wherein the support body is detachably attached to a support bracket fixed to a seat back frame, and this assembly is performed. In order to maintain the state, a locking means capable of locking to the support bracket is provided. The locking means is configured to release the locking to the support bracket when the leg of the headrest stay is pulled out of the port body. Thereby, if the lock of the stopper means is released and the legs of the headrest stay are removed from the support body, the support body can be removed from the support bracket at the same time. Become.

According to a sixth aspect of the present invention, there is provided the headrest support according to the fifth aspect, wherein the locking means is a locking claw formed on the support body so as to be elastically deformable. When the leg of the headrest stay is inserted into the support body, the claw is elastically deformed in a direction in which the claw is locked to the support bracket, and the claw is engaged with the support bracket when the leg is removed from the support body. It elastically deforms in the direction to release the stop. Thus, a function of removing the support main body from the support bracket with a simple structure can be obtained.

[0010]

Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram showing an outline of a headrest mounting portion in a vehicle seat. As shown in this figure, the headrest 10 includes a gate-shaped headrest stay 11 composed of a pair of left and right legs 12 and 13 and a connecting portion 16 connecting the upper portions of the legs 12 and 13. .
The headrest 10 is mounted on the seatback 17 by inserting the two legs 12, 13 through a pair of headrest supports 20, 21 provided on the seatback frame 18 of the seatback 17.

The legs 12 and 13 can slide up and down with respect to the individual headrest supports 20 and 21. The headrest support 21 located on the right side in FIG. 1 includes an adjusting means (not shown) for adjusting and locking the leg portion 13 in two or three levels. This adjusting means has a structure in which the leg 13 can be locked at that position by locking a lock member provided on the headrest support 21 to one of the cutout portions 15 formed on the leg 13. is there. If this lock is released by a manual operation (push operation), the legs 12 and 13 are released.
Can be slid up and down, whereby the vertical position of the headrest 10 can be adjusted as described above.

The headrest support 20 located on the left side of FIG. 1 generally allows the legs 12 to slide freely in order to improve the operability when adjusting the vertical position of the headrest 10 as described above. It has become. In other words, if the adjustment means is also provided on the side of the headrest support 20, both locks must be released and the headrest 10 must be moved up and down to adjust the position of the headrest 10, which deteriorates the operability. The headrest support 20 in the present embodiment is provided with a stopper means for preventing the leg portion 12 from completely coming out although the leg portion 12 can slide freely.

FIG. 2 is an exploded perspective view showing the structure of the headrest support 20. This headrest support 2
The components 0 are roughly divided into a support main body 24, a lock member 30, and a support bracket 40. The support bracket 40 is fixed to the seat back frame 18 by welding or the like.
The support main body 24 is assembled. This configuration is shown in FIG.
The same applies to the headrest support 21 on the right side of FIG.

The support main body 24 is an integrally molded product made of a synthetic resin material or the like.
4B. A through hole 25 opened vertically is formed in the axis of the support main body 24, and the leg 12 is inserted through the through hole 25. In the head 24A,
A space 26 for incorporating the lock member 30 is provided. The support bracket 40 has a rectangular tube shape, and the shaft portion 24B is inserted therein.

FIG. 3 is a longitudinal sectional view of the headrest support 20, and FIG. 4 is an enlarged sectional view taken along the line IV-IV of FIG.
As apparent from these drawings, the space 26
Are open on both sides of the head 24A and intersect with the through holes 25. The lock member 30 is inserted into the space 26 from one opening thereof by insertion. The lock member 30 includes a concave portion 31 that engages with the convex portions 27 formed on both inner walls of the space 26, and the lock member 30 is positioned inside the space 26 by these engagements. In this positioning state, the stay insertion portion 32 of the lock member 30 matches the through hole 25 of the support main body 24 (FIG. 4). The lock member 30 is formed of the same material (synthetic resin or the like) as the support main body 24.

The lock member 30 includes a stay insertion portion 3
2 (through-hole 25) is provided with a locking portion 34 that is arranged in a manner that traverses a part thereof. The locking portion 34 is provided with one cutout portion 14 formed near the tip of the leg portion 12.
Can be locked. The locking portion 34 has a beam-like structure connected to the locking member 30 only at both ends, and one end is connected via a cushion portion 36. Elasticity (bending) of this cushion portion 36
By using the above, it is possible to retract the locking portion 34 from the stay insertion portion 32. The lock member 30 has a groove-shaped tool insertion portion 38 extending from the end face thereof to the position of the locking portion 34.

When the leg 12 is inserted into the through hole 25 of the support body 24, the leg 12
Of the stay insertion portion 3
Pass 2 Therefore, the locking portion 34 in a state where the leg portion 12 is inserted into the through-hole 25 is always the stay insertion portion 3.
It has elasticity in the direction of returning to the side 2. Therefore, when the cutout portion 14 of the leg portion 12 is located in the stay insertion portion 32, the locking portion 34 is locked in the cutout portion 14.

As shown in FIGS. 2 and 3, a locking claw 28 is formed on the shaft portion 24B of the support body 24 at two opposing walls so as to be elastically deformable. In the support bracket 40, locking holes 42 are formed at positions corresponding to the locking claws 28, respectively. When the shaft portion 24B is assembled to the support bracket 40, the both locking claws 28 come to positions where they can be locked with the respective locking holes 42. However, the locking claw 28 in the free state is shown in FIG.
Are inserted into the through holes 25 and are not locked with the locking holes 42 as shown by the imaginary lines.

When the leg 12 is inserted into the through hole 25, the taper 12a at the tip of the leg 12 comes into contact with the slope 28a formed at the upper end of the locking claws 28.
Both locking claws 28 are elastically deformed so as to be pushed out of the through holes 25. Therefore, when the leg portion 12 is inserted as shown by the solid line in FIG. 3A, the both locking claws 28 are locked in the locking holes 42 of the support bracket 40, and this state is maintained. As a result, the support main body 24 is maintained in a state of being assembled to the seat back frame 18, and the headrest 10 is also moved to the headrest supports 20, 21.
Through the seat back 17.

When the vertical position of the headrest 10 is adjusted by releasing the lock of the headrest support 21 located on the right side of FIG. 1 by the position adjusting means as described above, the legs 12 and 13 are moved to the respective headrest supports 20 and 2.
Both slide up and down with respect to 1. Regardless of the intention or unwillingness of the operator in this position adjustment, if the headrest 10 is raised too much, the legs 12 and 13 may come out of the headrest supports 20 and 21 and the headrest 10 may come off the seat back 17 until now. Was.

In the present embodiment, even when the headrest 10 is raised beyond its position adjustment range, the cutout portion 14 of the leg 12 is
2, the notch portion 14 as shown in FIG.
Is locked in the direction in which the leg 12 comes out. Therefore, it is possible to prevent the leg portion 12 from coming out of the through hole 25 of the support main body 24. That is, the locking portion 34 that locks to the notch portion 14
Function as stopper means for preventing the leg portion 12 from coming off.

When it is necessary to remove the headrest 10 from the seat back 17 for repair or the like, a thin rod-shaped tool is inserted into the tool insertion portion 38 of the lock member 30 from the left opening in FIGS. Press the locking part 34. As a result, the locking portion 34 is disengaged from the cutout portion 14 while bending the cushion portion 36, and the lock on the leg portion 12 is released. result,
The leg 12 can be pulled out of the support body 24,
The headrest 10 is removed. The stopper means of the headrest support 20 is shifted by shifting the vertical position of the notch part 14 for retaining and the notch part 15 for position adjustment (notch at the bottom) in the leg 13 (FIG. 1). Lock and headrest support 2
The timing with the lock by the position adjusting means 1 is shifted.

As described above, when the lock by the stopper means is released and the leg 12 is pulled out from the support main body 24, the locking claw 28 of the shaft portion 24B is brought into a state shown by a virtual line in FIG. And the engagement of the support bracket 40 with the engagement hole 42 is released. Therefore, when the seat is disassembled, the headrest 10 is detached from the seat back 17 and the support bracket 40 is removed.
The support main body 24 can be removed from. It is preferable that the means for locking the support main body 24 and the support bracket 40 be employed in the headrest support 21 to facilitate the dismantling operation.

While the preferred embodiment of the present invention has been described with reference to the drawings, this embodiment can be easily modified or modified without departing from the spirit of the present invention. For example, in the stopper means of the headrest support 20, the tool insertion portion 38 is
It is reasonable to form it on the lock member 30 from the viewpoint of increasing the positional accuracy of the above, but it is also possible to form it on the head 24A of the support body 24. In addition, the relationship between the convex portion 27 and the concave portion 31 for positioning the lock member 30 in the space 26 of the head portion 24A may be set opposite to that shown in the drawing, and another structure may be used.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an outline of a headrest mounting portion in a vehicle seat.

FIG. 2 is an exploded perspective view showing a configuration of a headrest support.

FIG. 3 is a longitudinal sectional view of a headrest support.

FIG. 4 is an enlarged sectional view taken in the direction of arrows IV-IV in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Headrest 11 Headrest stay 12 Leg 17 Seat back 20 Headrest support 24 Support body 30 Lock member

Claims (6)

[Claims] 1. A headrest support in which a pair of legs of a headrest stay having a pair of legs connected to a pair of support bodies provided on a seat back by a connecting portion are vertically adjustable. A headrest support wherein one of the support bodies has an adjusting means for adjusting a headrest to a predetermined position in a vertical direction, and the other of the support bodies has a stopper means for preventing the legs of the headrest stay from coming off. 2. A headrest support in which a leg portion of a headrest stay is inserted into a support body provided on a seat back so as to be adjustable in a vertical position, wherein the support body is connected to a leg of the headrest stay from the support body. A headrest support comprising stopper means for locking the leg in the direction in which the part comes out and preventing the leg from coming off, the stopper means being able to unlock the leg only by using a tool. 3. The headrest support according to claim 2, wherein the stopper means is a lock member incorporated in the support body, and a cutout of a leg portion of the headrest stay formed on the lock member. A headrest support comprising: a locking portion lockable to a portion; and a tool insertion portion into which a tool can be inserted from the outside of the support main body to unlock the locking portion with respect to the cutout portion. . 4. The headrest support according to claim 3, wherein the support body and the lock member are made of the same material. 5. The headrest support according to claim 2, wherein the support body is removably mounted on a support bracket fixed to a seat back frame, and the support body is maintained to maintain the mounted state. Locking means is provided that can be locked to the support bracket, and the locking means is configured to release the lock on the support bracket when the legs of the headrest stay are removed from the support body. Have headrest support. 6. The headrest support according to claim 5, wherein the locking means is a locking claw formed on the support body so as to be elastically deformable, and the locking claw is attached to the support body. When the leg of the headrest stay is inserted, the headrest stay is elastically deformed in the direction in which it is locked to the support bracket, and when the leg is pulled out from the support body, it is elastically deformed in the direction to release the lock to the support bracket. Headrest support that is designed to deform.