JPH0430930Y2 - - 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, the support device described in Japanese Utility Model Publication No. 56-853 is known, and the support device described in this publication fixes a head rest support to a seat back frame provided in an automobile seat back via a bracket. An insertion hole extending in the vertical direction is formed in the head rest support, and a stay of the head rest is inserted and supported in the insertion hole, and a lock spring is provided with an engaging portion for locking the stay to the head rest support. While installing,
A groove is formed in a side wall of the stay, and the stay is locked to the headrest support by engagement of the groove with the engaging portion.

In addition, in fixing the head rest support to the bracket, in the above-mentioned publication,
A mounting hole passing through the bracket in the vertical direction is formed, and an engaging protrusion that elastically engages with the lower end of the mounting hole is integrally formed at the lower end of the headrest support. The head rest support is fixed to the bracket by being inserted into the mounting hole and elastically locking the insertion end to the lower edge of the mounting hole.

(Problems to be Solved by the Invention) However, in the headrest support device as described above, in order to securely attach the headrest support to the bracket, it is necessary to form an engaging protrusion or the like on the headrest support. As a result, the structure of the head rest support becomes complicated, and looseness may occur between the head rest support and the bracket, making the head rest supported by the head rest support unstable. There are problems such as.

The present invention was developed in view of the above-mentioned problems, and its purpose is to provide a simple structure that can be connected to the bracket by using an engaging body for locking the stay of the headrest to the headrest support. To provide a support device for a headrest capable of stably supporting the headrest by surely engaging the stay with the engaging body without causing rattling between the headrest support and the headrest support. be.

(Means for solving the problem) However, the present invention is based on the seat back frame BF.
A headrest support 2 having an insertion hole 2a through which the stay ST of the headrest HR is inserted is inserted into the holding hole 1a of the bracket 1 provided in the bracket 1, and the groove 4 provided in the stay is inserted into the headrest support 2. An engaging body 3 that engages with the headrest support to lock the stay to the headrest support, and a swinging allowable space S that allows the stay to swing in a direction away from the engaging body are provided. The headrest support device is configured to release the engagement between the engaging body and the groove by swinging with respect to the headrest support, the engaging body 3 being formed from a wire material having spring properties, An engaging portion 3 a that can be engaged with the groove 4 on one end side of the combination 3;
a, the stay ST is connected to the engaging portion 3a.
A biasing portion 3e is provided on the other end side of the engaging body 3 to engage with the bracket 1 so that the headrest support 2 can be elastically fixed to the bracket 1. It is characterized in that a locking portion 3c is provided, and a support groove 2e for the engaging body 3 is provided on the outer surface of the headrest support 2.

(Function) Therefore, the headrest support 2 is locked to the bracket 1, and the stay ST
The engagement and retention between the engaging portion 3a and the engaging body 3
The locking portion 3c and the urging portion 3 integrally provided in the
Therefore, the headrest HR can be stably supported with an overall simple structure.

Furthermore, since the engaging body 3 is housed in the support groove 2e formed in the head rest support 2,
When the engaging body 3 is attached to the support 2, the support can be reliably fitted into the holding hole 1a of the bracket 1 without play.

(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. There is.

The seat back SB of the headrest HR
The support device for this is constructed as follows.

That is, as shown in FIGS. 1, 2, and 7, the bracket 1 having the holding hole 1a is fixed to the seat bag frame BF attached to the seat bag SB, and the holding hole 1 of the bracket 1 is fixed to the seat bag frame BF attached to the seat bag SB.
Insert and fix the headrest support 2 to a, and attach the stay of the headrest HR to this support 2.
An insertion hole 2a through which the ST is inserted is vertically formed, and an engagement body 3 having an engagement portion 3a that protrudes into the insertion hole 2a of the support 2 is provided in the vehicle width direction. It is installed with bias towards the side.

and the stay in the headrest HR.
A concave groove 4 that opens outward in the vehicle width direction is formed at an intermediate portion in the vertical direction on one side wall in the vehicle width direction of the ST,
By engaging the engaging portion 3a of the engaging body 3 with this groove 4, the stay ST is locked to the support 2, and the support 2
A swing permissible space S is provided in the insertion hole 2a of the stay ST to allow the stay ST to swing over a predetermined angle in the vehicle width direction.
and the stay in the allowable space S.
By swinging ST, the engagement between the engaging portion 3a of the engaging body 3 and the groove 4 of the stay ST can be released.

In the support device for the headrest HR as described above, the headrest support 2 is fixed to the bracket 1 using the engaging body 3, and the engaging body 3 is engaged with the bracket 1. By integrally forming the locking portion 3c and engaging the locking portion 3c with the opening window 1b provided in the bracket 1, the support 2 is elastically fixed to the bracket 1. be.

Specifically, as shown in detail in FIG. 3, the bracket 1 into which the head rest support 2 is inserted and fixed is a first member 1A having a concave cross section.
and a second member 1B having a flat plate shape, each of these members 1A and 1B are joined to each other, and a holding hole 1a that penetrates in the vertical direction is formed in the opposing interior of each of the members 1A and 1B. The head rest support 2 is inserted and fixed into the holding hole 1a, and an opening window 1 is formed to engage the locking portion 3c of the engaging body 3 in the lower central portion of the second member 1B.
form b.

Further, as shown in detail in FIGS. 4 and 5, the head rest support 2 is formed into a generally rectangular cylindrical shape with a predetermined height.
A seat part 2b is integrally provided at the upper end in the height direction and is arranged flush with the upper surface of the seat bag SB,
A locking step portion 2c that is locked to the upper end of the bracket 1 is formed at a lower position of the seat portion 2b, and at the lower position of the locking step portion 2c, the entire support 2 except for the center portion of the front and rear walls is formed. A receiving groove 2d for receiving the engaging part 3a of the engaging body 3 and a biasing part 3e (to be described later) is provided on the outer periphery, while the portions of the receiving groove 2d facing the longitudinal side walls of the support 2 are arranged as described above. The engaging part 3a and biasing part 3e of the engaging body 3, which is inserted into the insertion hole 2a and located in the receiving groove 2d, are inserted into the insertion hole 2a from the insertion part of the receiving groove 2d with the insertion hole 2a. As if rushing into the inside of 2a.

Furthermore, support grooves 2 for the engaging body 3 are provided behind the head rest support 2 and extend in the vertical direction on both sides of the center, and the upper end portions are continuous with the receiving groove 2d.
e, and an opening window 2f that opens into the insertion hole 2a is formed at a lower position of the support groove 2e.

Further, the engaging body 3 is made of a wire rod having spring properties, and, as is clear from FIGS. 1 and 6, has an engaging portion 3a that is U-shaped in plan view, and the above-mentioned stay that faces the engaging portion 3a. A biasing portion 3a having a U-shape in plan view that biases ST toward the engaging portion 3a, and a pair of leg portions extending continuously downward from one end of the engaging portion 3a and the biasing portion 3e, respectively. 3b, and this leg portion 3b is connected to the head rest support 2.
The support 2 is supported in the support groove 2e of the support groove 2e.
The receiving groove 2d is configured to support the engaging portion 3a and the urging portion 3e, and at this time, the receiving groove 2d is thrust into the inside of the insertion hole 2a from a communicating portion with the insertion hole 2a. In the engaging portion 3a,
By engaging the concave groove 4 provided in the stay ST, the stay ST is fixedly supported by the support 2, and is also inserted into the insertion hole 2a via the receiving groove 2d. The biasing portion 3e biases the stay ST toward the engaging portion 3a.

Further, the locking portion 3c bent outward is integrally formed at the lower end of the leg portion 3b of the engaging body 3, and the locking portion 3c is connected to the second member of the bracket 1. Opening window 1b provided in 1B
By engaging the support 2 with the support 2, the support 2 is prevented from being removed from the bracket 1, and the support 2 is inserted and fixed into the holding hole 1a of the bracket 1.

Further, in the embodiments shown in the figures, a plunger 3d that projects into the insertion hole 2a from the opening window 2f formed in the headrest support 2 is formed in a continuous manner at a lower position of the locking part 3c in the engaging body 3. form,
By pressing the back side of the stay ST inserted into the insertion hole 2a with the protruding portion 3d, the stay ST is prevented from wobbling in the insertion hole 2a.

In addition, the insertion hole 2a of the headrest support 2
, a swing permissible space S is formed that allows the stay ST to swing over a predetermined angle in the vehicle width direction, and by swinging the stay ST in the vehicle width direction in this allowable space S, the stay ST Separate the groove 4 from the engagement part 3a of the engagement body 3, release the engagement between the engagement part 3a and the groove 4, and pull out the stay ST from the insertion hole 2a of the support 2. It is possible.

Specifically, as shown in FIG.
A first sloped wall 2 that slopes outward as it goes toward the lower end, on the lower part of the inner wall located on the side of the concave groove 4 of the ST.
A, and the first slope is formed on the inner wall of the stay ST on the side opposite to the groove 4, from a portion slightly above the lower end to the upper end, and slopes outward as it goes toward the upper end. A second inclined wall 2B is formed parallel to the wall 2A, and a space S for allowing the stay ST to swing is secured between each of these inclined walls 2A and 2B.

Then, the stay ST, which is inserted and supported through the insertion hole 2a of the support 2, is swung in the permissible space S from the solid line position to the imaginary line position in the vehicle width direction. stay
A direction in which the concave groove 4 formed in ST is separated from the engaging portion 3a of the engaging body 3 supported by the receiving groove 2d of the support 2, and the urging portion 3e is separated from the engaging portions 3, 3a. When the stay is elastically deformed, the stay is inserted through the insertion hole 2a of the support 2.
It is designed so that the ST can be extracted outward.

The permissible space S is formed to allow only the swing of the stay ST in the vehicle width direction, and by doing so, when the stay ST is inserted and fixed to the support 2, even if the stay ST is inserted and fixed from the rear seat side. Even if the headrest HR is pushed back and forth, the lock of the stay ST to the engaging body 3 will not be released, resulting in a highly stable structure.

(Effects of the Invention) As explained above, the headrest support device according to the present invention has a headrest support device in which the headrest is inserted into the holding hole 1a of the bracket 1 provided in the seat back frame BF.
A headrest support 2 equipped with an insertion hole 2a through which the stay ST of the HR is inserted is inserted, and a concave groove 4 provided in the stay is inserted into the headrest support 2.
An engaging body 3 that engages with the headrest support to lock the stay to the headrest support, and a swinging allowable space S that allows the stay to swing in a direction away from the engaging body are provided. In the headrest support device, the engagement body 3 is formed from a wire material having spring properties, and the engagement body 3 is formed from a wire material having spring properties. An engaging part 3a capable of engaging with the groove 4 and an urging part 3e opposing the engaging part 3a and urging the stay ST toward the engaging part 3a are provided on one end side. At the same time, a locking portion 3c is provided on the other end side of the engaging body 3 to engage with the bracket 1 and enable the headrest support 2 to be elastically fixed to the bracket 1. By providing the support groove 2e for the engagement body 3 on the outer surface of the support 2, the headrest support 2 can be locked to the bracket 1, the stay ST can be locked to the support 2, and the stay ST can be locked. Since the engaging body 3 can maintain the engagement with the support 2, the headrest HR can be stably supported with a simple structure even though the number of parts is reduced overall.

Further, according to the present invention, the engaging body 3 is housed and supported in the support groove 2e formed in the head rest support 2, so when the support 2 is attached to the bracket 1, the support is not attached to the bracket 1. 1 can be reliably fitted into the holding hole 1a without play, and furthermore, the engaging body 3 can be sub-assembled to the support 2, making it easy to assemble the support 2 to the bracket 1. can be done.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing the headrest support device according to the present invention, Fig. 2 is a front sectional view thereof, Fig. 3 is an exploded perspective view of the bracket, and Figs. 4 and 5 are the front and rear of the headrest support. FIG. 6 is a perspective view showing the engaging body, and FIG. 7 is a perspective view showing the entire automobile seat. DESCRIPTION OF SYMBOLS 1... Bracket, 1a... Holding hole, 2... Head rest support, 2a... Insertion hole, 3... Engaging body, 3a... Engaging part, 3c... Locking part, 3e...
...Biasing part, 4...Concave groove, BF...Seat back frame, HR...Head rest, ST...Stay.

Claims (1)

[Scope of utility model registration request] Insert the stay of the headrest HR into the holding hole 1a of the bracket 1 provided on the seatback frame BF.
A head rest support 2 having an insertion hole 2a through which the ST is inserted is inserted, and the stay is engaged with the groove 4 provided in the stay to lock the stay to the head rest support. An engaging body 3 and a swinging allowable space S that allows the stay to swing in a direction away from the engaging body are provided, and the engaging body and the groove are connected by swinging of the stay with respect to the headrest support. The headrest supporting device is configured to release the fitting of the headrest, and the engaging body 3 is formed from a wire material having spring properties, and one end of the engaging body 3 is capable of being engaged with the groove 4. an engaging part 3a, and opposite to the engaging part 3a,
A biasing portion 3e for biasing the stay ST toward the engaging portion 3a is provided at the other end of the engaging body 3, and engages with the bracket 1 to move the headrest support 2 toward the bracket 1. A support device for a headrest characterized in that a locking portion 3c that can be elastically fixed to the headrest support 2 is provided, and a support groove 2e for the engaging body 3 is provided on the outer surface of the headrest support 2.