JPH0515236Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a support structure for a headrest stay. To explain in more detail, it includes a bracket fixed to the upper horizontal rod of a seatback frame, and a support structure attached to the bracket. The present invention relates to a support structure for a headrest stay, which includes a stay holder having a through hole into which the headrest stay is inserted.

[Conventional technology]

BACKGROUND OF THE INVENTION Headrests have conventionally been attached to seatbacks and are used to protect the occupant's head and provide rest. A stay supporting the headrest is inserted and attached to a through hole of a headrest stay holder attached to the seat back frame side. As shown in FIG. 6, if the stay 1 of this headrest is in complete contact with the through hole 3 of the stay holder 2, the frictional resistance will be large when the stay 1 moves up and down, the operating force will be heavy, and the gap will be reduced. When formed, it has the disadvantage of causing looseness.

In particular, when using a pair of left and right stays 1 and a pair of left and right stay holders 2, only one of the pair of left and right stay holders 2 is provided with a locking mechanism, and the other is in a free state, so this free side The stay holder 2 was often rattled.

For this purpose, a protrusion 5 made of synthetic resin or the like is formed in the vertical direction on the inner peripheral surface of the through hole 3 of the stay holder 2,
A stay holder 2 is known in which the contact surface between the stay holder 2 and the stay 1 is reduced to reduce frictional resistance.

[The problem that the invention attempts to solve]

However, even in the conventional stay holder 2,
If the stay 1 and the protrusion 5 are brought into close contact, the stay 1
The operating force required to move the vertical position of the machine becomes heavy,
In addition, gaps are generated due to wear and deformation of the protrusions 5, which causes rattling and abnormal noise when the headrest receives a load in the front-rear direction.

The purpose of this invention is to create a head rest that has low frictional resistance when moving the stay up and down, reducing the operating force, and eliminating rattling between the stay and the stay holder and preventing the generation of abnormal noise. It provides a support structure for the stay.

[Means to solve the problem]

The present invention was made in view of the above-mentioned problems, and includes a bracket fixed to the upper horizontal rod of the seatback frame, and a stay holder attached to the bracket and having a through hole into which the head rest stay is inserted. In the support structure for a head rest stay, the stay holder includes a cylindrical holder part in the center, a flange part provided at the upper part of the holder part, and a locking part provided at the lower part of the holder part and latched to the bracket. The bracket is formed into a channel steel shape having the through holes in the upper and lower flanges, an opening is provided in the holder part, and a pair of elastic parts are provided on the inner surface of either of the upper and lower flanges. Attach an elastic body having two elastic pieces, and attach an elastic body having one elastic piece, and pass one elastic piece through the opening and press it against the headrest stay, and attach the other elastic piece to the headrest stay. It is characterized in that it is brought into pressure contact with the outer circumferential surface of the holder portion facing the opening.

[Effect]

According to the present invention, the bracket is formed into a channel steel shape with through holes in the upper and lower flanges, an opening is provided in the holder portion, and a pair of elastic pieces are provided on the inner surface of either the upper or lower flanges. The elastic body is attached, one elastic piece is passed through the opening of the stay holder and pressed against the headrest stay, and the other elastic piece is pressed against the outer peripheral surface of the holder facing the opening. One side of the rest stay and one inner side of the stay holder are in contact with each other,
Since the headrest stay is held by the bracket without any play through the pair of elastic pieces, the headrest stay does not play or make any noise.

Also, since one inner surface of the stay holder and one side of the headrest stay are in elastic pressure contact,
When moving the headrest stay for vertical position adjustment, there is less frictional resistance and the operating force of the headrest stay is reduced.

[Embodiment] Hereinafter, an embodiment of the head rest stay support structure according to the present invention will be described in detail with reference to the drawings.

1 to 5 schematically show an embodiment of the present invention, in which an upper horizontal rod 12a which is a part of the seat back frame 12 of the seat back 11 is shown.
A bracket 13 is fixed to the bracket 1.
A stay holder 14 is attached to the through hole 13a of No.3.

The stay holder 14 has a cylindrical holder part 15 in the center, a flange part 16 formed at the upper part of the holder part 15, and a wedge-shaped locking part 17 formed at the lower part of the holder part 15. , a through hole 1 into which the stay 22 of the headrest 21 is inserted in the center;
8 is formed.

The locking part 17 of the stay holder 14 is inserted into the through hole 13a from above the U-shaped bracket 13, the locking part 17 is locked to the lower end of the bracket 13, and the holder part 15 is fitted into the through hole 13a of the bracket 13. However, the flange portion 16 is positioned above the bracket 13.

The bracket 13 is formed into a channel steel shape having an upper flange 13b and a lower flange 13c, and the through holes 13a are provided in the upper and lower flanges 13b and 13c, respectively. And the lower flange 13c
An elastic body 24 made of plastic, spring steel, etc. has a hole 23a slightly larger than the through hole 13a on the upper edge of the through hole 13a.
It is attached on top of a.

This elastic body 24 faces upward to the left and right and has a cross section of S.
Letter-shaped elastic pieces 25 and 26 are extended, and a convex portion 25 facing inward is provided at the upper part of the elastic pieces 25 and 26.
a, 26a are formed.

The holder part 15 of the stay holder 14 is provided with a long hole 15a as an opening facing in the longitudinal direction, and when the stay holder 14 is fitted into the through hole 13a of the bracket 13, the elastic body 24 The convex part 25a of the elastic piece 25 penetrates the long hole 15a of the holder part 15, projects inward, and comes into pressure contact with the headrest stay 22, and the convex part 26a of the elastic piece 26 penetrates the long hole 15a.
It is adapted to come into pressure contact with the outer circumferential surface of the holder 15 facing a.

Since the embodiment of the present invention is constructed as described above, one side of the headrest stay 22 and one circumferential surface of the through hole 18 of the holder portion 15 are free from play, and the convex portions 25a of the elastic pieces 25, 26, The headrest stay 22 is supported by the bracket 13 without play through the elastic body 26a.
In addition, when the pressing force of the convex part 26a is larger than the pressing force of the convex part 25a, the holder part 15 of the stay holder 14 comes into contact with the left side of the through hole 13a, and in the opposite case, it comes into contact with the right side of the through hole 13a. . Therefore, the headrest stay 22 does not rattle or generate abnormal noise.

In addition, since the headrest stay 22 is elastically pressed against the stay holder 14, there is little frictional resistance when moving the headrest stay 22.
Operation force is reduced.

In this embodiment, the elastic body 24 is fixed to the lower flange 13c, but as shown in FIG.
The headrest stay 2 is integrally formed with
2 and the stay holder 14, this elastic body 24 can be held by the lower flange 13c.
It does not have to stick to the

[Effect of idea]

As explained above in detail, according to the support structure of the headrest stay of the present invention, the bracket is formed in the shape of channel steel with through holes in the upper and lower flanges, and an opening is provided in the holder part, so that the upper and lower An elastic body having a pair of elastic pieces is attached to the inner surface of either one of the flanges, one elastic piece is passed through the opening of the stay holder and pressed against the headrest stay, and the other elastic piece is inserted into the opening of the stay holder. Since the headrest stay is pressed against the outer circumferential surface of the holder part facing the part, one side of the headrest stay and one inner side of the stay holder are in contact with each other, and the bracket is held without play through the pair of elastic pieces, so that the head This prevents the rest stay from rattling or making abnormal noises.
In addition, since one inner surface of the stay holder and one side of the headrest stay are in elastic pressure contact, there is less frictional resistance when moving the headrest stay to adjust its vertical position, and the operating force of the headrest stay is reduced. It is possible to obtain a support structure for the headrest stay that can reduce the weight.

[Brief explanation of the drawing]

1 to 5 each schematically show an embodiment of the support structure for the headrest stay according to the present invention. FIG. 1 is a perspective view of the seat back, and FIG. Longitudinal sectional view, 3rd
FIG. 4 is a perspective view of the bracket, FIG. 4 is a perspective view of the stay holder, FIG. 5 is a vertical sectional view of the elastic body, and FIG. 6 is a vertical sectional view of the conventional stay holder. In the figure, 11... Seat back, 12... Seat back frame, 12a... Upper horizontal rod, 13...
Bracket, 13a...Through hole, 13b, 13c...
...Flange, 14... Stay holder, 15... Holder part, 15a... Long hole (opening), 16... Flange part, 17... Locking part, 18... Through hole, 21
...Headrest, 22...Headrest stay, 24...Elastic body, 25, 26...Elastic piece.

Claims (1)

[Scope of utility model registration request] In a support structure for a headrest stay, the structure includes a bracket fixed to an upper horizontal beam of a seat back frame, and a stay holder attached to the bracket and having a through hole into which a headrest stay is inserted. The holder includes a cylindrical holder part, a flange part provided at the upper part of the holder part, and a locking part provided at the lower part of the holder part and latched to the bracket, and the bracket is attached to the upper and lower flanges. The holder part is formed into a channel steel shape having a through hole, and an opening is provided in the holder part, and an elastic body having a pair of elastic pieces is attached to the inner surface of one of the upper and lower flanges, and one of the elastic pieces is attached to the inner surface of one of the upper and lower flanges. A support structure for a headrest stay, characterized in that the elastic piece passes through the opening and is pressed against the headrest stay, and the other elastic piece is pressed against the outer peripheral surface of a holder facing the opening.