JPH0430932Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a support device for a headrest that is detachably attached to the upper part of a seat bag in an automobile.

(Prior art) Conventionally, as a support device for this type of headrest,
For example, a support device described in Japanese Utility Model Publication No. 56-158959 is known, and the support device described in this publication includes a bracket attached to a seat back frame provided in an automobile seat back, and a headrest support fixed to the bracket. In this headrest support, an insertion hole having approximately the same size as the stay of the headrest is formed downwardly and passes through the headrest support. A release button is attached to the spring to release the engagement of the spring with the stay.

Thus, when attaching the headrest to the seat bag, the stay of the headrest is inserted into the insertion hole of the headrest support and the stay is locked by the lock spring, thereby attaching the stay to the headrest support. Furthermore, when removing the headrest from the seat bag, for example when the seat bag is folded backwards to make it fully flat, when removing the head rest from the seat bag, the release button releases the lock spring. The engagement with the stay is released and the stay is pulled out from the insertion hole of the head rest support.

By the way, in the headrest support device as described above, when the seatback is laid down to be fully flat, when the headrest is removed from the seatback, the release button is operated with one hand, and the headrest is released with the other hand. It is necessary to pull out the headrest from the insertion hole of the headrest support. In other words, when removing the headrest from the seat bag, both hands are required and it is very troublesome.

Therefore, in order to solve the above problems,
A support device for a headrest shown in FIG. 8 was previously proposed.

The headrest support device shown in Fig. 8 is attached to the seatback frame provided on the seatback SB.
Install the bracket BR, and attach it to this bracket BR.
A headrest support SP is installed which has an insertion hole a through which the stay ST of the headrest HR is inserted, and the support SP is biased inward in the vehicle width direction and protrudes into the insertion hole a of the support SP. Lock spring LS with an engaging part
A groove b that opens outward in the vehicle width direction is formed in one side wall of the stay ST in the vehicle width direction, and the stay ST is engaged with the support SP by the engagement of the spring LS with the groove b. At the same time, on the upper side of the insertion hole a in the support SP,
A swing permissible space S is provided in which the stay ST can swing at a predetermined angle in the vehicle width direction relative to the support SP, and the engagement of the spring LS with the groove b is released by swinging the stay ST. It was designed to do so.

Therefore, when removing the headrest HR from the seat bat SB, the headrest
HR stay ST above head rest support SP
By performing a swing operation in the vehicle width direction in the swing permissible space S, the engagement between the lock spring 3 and the groove b of the stay ST is released, and the seat back of the headrest HR can be moved with a single touch using one hand. This allows for easy removal from the SB.

(Problems to be Solved by the Invention) By the way, in the headrest support device as described above, since the rocking allowable space S of the stay ST is formed on the upper side of the insertion hole a in the support SP, Since the allowable space S is exposed on the upper side of the seat bag SB,
There is a problem with the appearance.

The present invention was devised in view of the above-mentioned problems, and its purpose is to provide a space for allowing the stay to swing on the inner lower side of the insertion hole in the support, and to extend the upper side of the insertion hole as much as possible. By forming the seat bag small, the rocking allowable space is not exposed to the upper side of the seat back.
To provide a support device for a headrest that has a good appearance, allows the stay to be attached to and detached from the seat bag with a single touch using one hand, and prevents the stay from inadvertently detaching from the steering support. It's about doing.

(Means for Solving the Problems) Accordingly, the present invention provides a headrest support having an insertion hole for a flat headrest stay having width in the vehicle width direction on the upper part of the seatback frame, and also provides a headrest support for the headrest stay. The rest support is provided with an engaging portion that can engage with a fitting portion formed on one side of the head rest stay in the vehicle width direction, and a spring that biases the head rest stay toward the engaging portion. , an inner surface of the insertion hole located on the opposite side of the engaging portion is inclined downwardly to the other side in the vehicle width direction, and the inclined surface and the stay inserted into the insertion hole are inserted in the vehicle width direction. A swing permissible space is provided between the stay and the other side surface, so that the stay can swing at a predetermined angle in the vehicle width direction and in a direction away from the engagement part using the upper end opening of the insertion hole as a fulcrum. It is characterized by:

(Function) According to the present invention, the swing-permissible space is formed to become wider toward the bottom from the upper opening of the insertion hole, so that the swing-allowable space is exposed to the outside of the seat bag. without doing,
Therefore, the appearance of the seat bag is improved, and the removal of the headrest from the seat bag is easy.
The stay is placed in a swing-permissible space of the support,
This can be done by swinging in the vehicle width direction against the spring, so even if a rear seat occupant leans against the headrest of the front seat, the stay will not be held against the support. There is no risk of inadvertent withdrawal.

(Example) The headrest support device according to the present invention will be described below with reference to the embodiments shown in the drawings.

The automobile seat shown in Fig. 7 has a seat bag SB provided behind the seat cushion SC so that the position can be changed between an upright position and a reclining position, and a headrest HR removably attached to the upper part of the seat bag SB. .

In order to support the headrest HR on the seat bag SB, the following steps were taken.

That is, as shown in FIGS. 1 and 7, the seat back frame provided on the seat back SB
Fix the headrest support SP to BF, and attach the stay of the headrest HR to this support SP.
An insertion hole A through which the ST is inserted is formed vertically.

As shown in detail in FIG. 2, the headrest support SP has a flat plate shape and a first member 1 having a bulge portion 1a that bulges out in a generally convex cross-sectional shape toward one side in the longitudinal direction of the vehicle body. a second member 2, and a plurality of locations on both sides in the vehicle width direction of the second member and protruding pieces 1b, 1b formed on both sides in the vehicle width direction of the bulging portion 1a of the first member 1 are joined to each other. By integrating, the bulging portion 1a and the second
The insertion hole A that penetrates in the vertical direction is formed between the member 2, and at the upper end side of the insertion hole A,
An opening K whose diameter expands upward in a roughly turgid shape is formed, and an engaging part 3 for engaging the stay ST is provided between the first and second members 1 and 2.

In the embodiment shown in the drawings, the engaging portion 3 is an engaging pin 3 having a large-diameter head 3b on the base side of the shaft portion 3a and a small-diameter portion 3c on the distal end side of the shaft portion 3a. I am using it.

A bulging portion 1a formed on the first member 1
A through hole 1c through which the shaft portion 3a of the engagement pin 3 is inserted is provided on the lower side of one side in the vehicle width direction, and a through hole 1c is provided in a portion of the second member 2 facing the through hole 1c. A through hole 2a is provided through which the small diameter end portion 3c is inserted, and the shaft portion 3a is inserted into the through hole 1c of the first member 1, and the small diameter portion 3c is inserted into the through hole of the second member 2. 2a, and by caulking the insertion end of the small diameter portion 3c, the shaft portion 3a of the pin 3 is fixed between the members 1 and 2 with the shaft portion 3a facing the insertion hole A. do.

Further, a fitting groove 4 is formed in one side wall in the vehicle width direction on the lower side of the headrest stay ST, and the fitting groove 4 is formed to be able to be engaged with and detached from the engagement pin 3, and the stay ST is inserted into the insertion hole A of the support SP. When inserted into the
The fitting groove 4 is engaged with the pin 3, so that the stay ST is held in an upright state by the support SP.

Further, a spring 5 is attached to the support SP, which presses a side wall portion of the stay ST opposite to the fitting groove 4 and biases the fitting groove 4 in a direction to engage the pin 3. The biasing force of the spring 5 ensures that the stay ST is held on the support SP without allowing the fitting groove 4 to separate from the pin 3.

Specifically, as is clear from FIG. 2, on the side opposite to the side where the through hole 1c is formed in the first member 1, at the intermediate portion in the height direction of the protruding piece 1b,
A locking groove 1d having a roughly V shape is provided, and the locking groove 1d is provided at the end edge of the second member 2 in the vehicle width direction.
A locking groove 2b having the same shape as the locking groove 1d is formed at a portion facing the locking groove 1d, while an end edge of the second member 2 on the opposite side from the side where the locking groove 2b is formed,
A locking piece 2c that projects outward is cut and raised.

Therefore, the spring 5 is
It is formed as shown in the figure, and the second
A first extension part 5a that extends along the back surface of the member and has one longitudinal end locked with the locking piece 2c of the second member 2; a second extension part 5b that is engaged with the locking grooves 1d and 2b of the members 1 and 2; and the second extension part 5b.
a third bent extension 5c extending in a direction perpendicular to the first member 1 and roughly shaped along the bulge 1a provided on the first member 1; and from this third bending extension 5c,
A fourth extension part 5d extends between the members 1 and 2 so as to face a part of the insertion hole A, and a second extension part 5d extends in the orthogonal direction from the fourth extension part 5d.
and a fifth extension portion 5e that is locked to the back side of the member 2.

and the seat back SB of the stay ST.
When installing the stay ST to the support
By inserting the SP into the insertion hole A, the engagement groove 4 of the stay ST is inserted into the engagement pin 3 while pressing the fourth extension 5d of the spring 5 laterally with one side wall surface of the stay ST. The pin 3 of the fitting groove 4 is engaged with the pin 3 of the fitting groove 4 so that the stay ST can be attached with one touch with one hand.
When the stay ST is engaged with the engagement pin 3, the fourth extension 5d of the spring 5 applies a pressing force to one side wall surface of the stay ST, so that the engagement groove 4 of the stay ST is connected to the engagement pin 3. The stay ST is held in an engaged state to prevent the stay ST from detaching from the support SP.

Further, the inner surface of the insertion hole A located on the opposite side of the engagement pin 3 is inclined downwardly to the other side in the vehicle width direction, and the stay ST inserted into the inclined surface and the insertion hole A is and other sides in the vehicle width direction,
A rocking allowable space S is provided that allows the stay ST to swing by a predetermined angle in the vehicle width direction and in a direction away from the engaging pin 3, using the upper end opening of the insertion hole A as a fulcrum. In the above-mentioned stay
By swinging the ST in the vehicle width direction against the biasing force of the spring 5, the fitting groove 4 of the stay ST is separated from the engaging pin 3, and this pin 3 and the fitting groove 4 are separated from each other. disengage the said stay.
This allows the ST to be taken out from the insertion hole A of the support SP.

Specifically, as shown in FIG. 1, the bulging portion 1 of the first member 1 constituting the support SP
a) is formed on the lower portion of the inner wall in the vehicle width direction on the opposite side to the mounting side of the engagement pin 3, and the inclined wall 1A is inclined outwardly as it approaches the lower end side.
and the side wall surface of the stay ST,
In this way, the swing allowance space S is secured.

Then, the stay ST, which is inserted and supported in the insertion hole A of the support SP, is inserted into the swing permissible space S.
, the fourth extension part 5d of the spring 5 is moved from the solid line position to the imaginary line position in the figure by tilting in the vehicle width direction from the solid line position to the imaginary line position in the figure. The fitting groove 4 of the stay ST is separated from the engagement pin 3 of the support SP, and the stay is inserted through the insertion hole A of the support SP.
This is done as if pulling the ST outward.

The allowable space S is formed so as to allow only the swing of the stay ST in the vehicle width direction, and by doing so, the stay ST is
When the SP is inserted and fixed, even if the headrest HR is pushed forward and backward from the rear seat side, the lock of the stay ST to the spring 5 will not be released. This results in a structure with excellent safety. That is, when getting on or off the vehicle, it is easy for the occupant to put his/her hand on the headrest and push the headrest in the longitudinal direction, and even in the event of a frontal collision of the vehicle, the occupant sitting behind the headrest can easily push the headrest forward and backward. In many cases, the headrest is pushed forward by contacting the stay ST, but even in such a case, the lock of the stay ST to the support SP is not inadvertently released.

As shown in FIG. 5, the spring 5 that urges the stay ST toward the engagement pin 3 is formed with a winding portion 5f at one end of the third extension portion 5c. 5f is the protruding piece 1 of the first member 1
b may be fixed via a fixing pin P.

Further, the spring 5 includes the third extension portion 5c.
A part of the fourth extension part 5d is bent inward in the vehicle width direction into a roughly shape, and when the fourth extension part 5d is pressed by the stay ST, the fourth extension part 5d is released from a predetermined position of the insertion hole A. I try to prevent this from happening.

In the illustrated embodiment, supporting pieces 1e extending in the horizontal direction are integrally formed on the upper side of each protruding piece 1b of the first member 1, and a fixing bolt 6 is connected to each supporting piece 1e. A decorative member 7 is attached.

As shown in detail in FIG. 6, the decorative member 7 has an insertion hole 7a for the stay ST facing the insertion hole A of the support SP in its center portion, and also has an insertion hole 7a for the fixing bolt 6 on both sides in the vehicle width direction. By forming insertion holes 7b and screwing the fixing bolts 6 onto each support piece 1e through the insertion holes 7b, the decorative member 7 is attached to the support SP.
It is fixed to the upper side of the

(Effect of the invention) As explained above, in the headrest support device according to the invention, a headrest support is provided on the upper part of the seatback frame, and has a flat headrest stay insertion hole having a width in the vehicle width direction. , the headrest support includes an engaging portion that can engage with a fitting portion formed on one side of the headrest stay in the vehicle width direction, and a spring that biases the headrest stay toward the engaging portion. At the same time, the inner surface of the insertion hole located on the opposite side of the engaging portion is inclined downwardly to the other side in the vehicle width direction, and the stay inserted into the insertion hole is connected to the inclined surface. A swinging space is provided between the stay and the other side surface in the vehicle width direction, so that the stay can swing by a predetermined angle in the vehicle width direction and in a direction away from the engaging portion using the upper end opening of the insertion hole as a fulcrum. By doing so, the rocking allowable space is formed to become wider toward the bottom from the upper opening of the insertion hole, so that the rocking allowing space is not exposed to the outside of the seat back. Not only can the appearance of the seat back be improved, but also the headrest can be removed from the seat back by swinging the stay in the widthwise direction of the vehicle in a swinging space of the support. For example, when getting on and off,
When an occupant puts his/her hand on the headrest and pushes the headrest forward or backward, or during a frontal collision of the vehicle, an occupant riding in the rear contacts the headrest and pushes the headrest forward. Even in such a case, there is no possibility that the stay is inadvertently detached from the support.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing a headrest support device according to the present invention, Fig. 2 is an enlarged exploded perspective view of the headrest support, and Figs. 3 and 4 show the support with a spring attached to it. Slope view, Fig. 5 is a slope view showing another embodiment, Fig. 6
FIG. 7 is an enlarged perspective view of the decorative member, FIG. 7 is a perspective view showing the overall structure of the automobile seat, and FIG. 8 is a cross-sectional view illustrating the process leading to the invention. BF...Seat back frame, ST...Head rest stay, A...Insertion hole, SP...Head rest support, K...Opening, S...Swivel permissible space, 3...Engagement part, 4... ...Fitting groove, 5...Spring.

Claims (1)

[Scope of utility model registration request] A head rest support having a flat plate-like head rest stay insertion hole having a width in the vehicle width direction is provided on the upper part of the seat back frame, and a head rest support is provided on the head rest support on one side in the vehicle width direction of the head rest stay. an engaging part that can be engaged with the fitted fitting part and a spring that biases the head rest stay toward the engaging part, and is located on the opposite side of the insertion hole from the engaging part. The inner surface is inclined toward the other side in the vehicle width direction as it goes downward, and a swing permissible space is provided between the inclined surface and the other side surface in the vehicle width direction of the stay inserted into the insertion hole. A support device for a headrest, characterized in that the headrest is capable of swinging by a predetermined angle in the vehicle width direction and in a direction away from the engaging portion using the upper end opening of the insertion hole as a fulcrum.