JPS6130434A - Head rest mounting device onto vehicle seat - Google Patents

Abstract

PURPOSE:To reduce the width of a side frame and thereby reduce any obstruction against a field of view by fixedly mounting the side frame upwardly projecting on both sides of a seat back frame, and attaching a head rest between bent portions of said side frame on the upper end thereof vertically movably. CONSTITUTION:First, upon adjusting the height of a head rest (8), an operating part 31b of a lock lever 31 is turned toward the side of a guide rail 17 against a tensile coil spring, and thereby a stopper pawl part 31a of the lock lever 31 is disengaged from one of stopper holes 25 formed in a slider 22 for releasing the lock of the slider 22 to the guide rail 17. Then, the head rest 18 is moved up and down, the stopper pawl part 31a is engaged in any of a plurality of the stopper holes for fixing the slider 22 on the guide rail 17. Thereupon, the upper part side of the side frame 11 is bent in a direction where they approach with each other while the head rest 18 is supported vertically movably on the guide rail 17 is integral with the tip end parts of the bent parts 12a, 13a, and thus a prescribed purpose can be assured.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Use This invention relates to a headrest for a vehicle seat, which is attached to one end of a seat in an automobile or the like so that the headrest can be adjusted downward.・Regarding the mounting device.

Generally, in automobiles, a headrest is usually attached to the upper end of the seat back of the seat. Furthermore, the height of the headrest 1- can be adjusted according to the sitting height of the user.

An example of a seat equipped with such a headless 1- is the one shown in Japanese Utility Model Application Publication No. 58-1360.

This publication discloses the devices shown in FIGS. 6 to 8. The seat 1 shown in FIGS. 6 to 8 is composed of a seat cushion 2 and a seat batter 3. The seat 1 shown in FIGS.

This seat back 3 has a seat back frame 3a shown in FIG. 8 inside, and this seat back frame 3a
Side frames 4, 4 are fixed upwardly to both sides of the upper end. Inside these side frames 4, 4 is an 8th
As shown in the figure, guide rods 5, 5 extending downward are fixed, and a cylindrical slider 6.6 is fitted on the outer periphery of the guide rods 5, 5 so as to be movable up and down. . The slider 6.6 can be fixed to the guide rods 5, 5 in stages using a locking device (not shown). Furthermore, the sliders 6.6 are fixed to both sides of the spatula dresses 1-7. Therefore, the height of the headrest 1-7 can be adjusted in stages.

However, since the side frames 4, 4 have guide rods 5, 5 and sliders 6.6 built-in, their width is inevitably large. Moreover, since the width of the sight frame 4.4 is approximately uniform from the base to one end, the side frame 4.4 obstructs the forward view of the rear seat user and the rear view of the seat 1 user. There was a problem that people felt oppressed.

Lesson B ■ Enoki… Shun □ Therefore, the purpose of this invention is to provide a headrest pick-up device for a vehicle seat that sufficiently reduces the width of the base side of the side frame and expands the front and rear visibility. That is.

Means for Solving the Problems In order to achieve this object, the present invention fixes sight frames projecting upward from one end of the seat back 1 to both sides of the seat back frame, and fixes one end of each side frame to one end of the seat back frame. Folded portions extending in directions approaching each other are provided at the ends, guide rails extending vertically are fixed to the tips of the bent portions, and a headrest is disposed between the both side frames, and the headrest I- A slider fixed to both sides of the slider is held by the guide rail so as to be freely movable downward, and
The present invention is characterized in that it is a heladless 1-taking device for a vehicle seat, which is equipped with a locking device for fixing and releasing the slider on the guide rail.

Function According to such a configuration, when the slider is released from being fixed to the guide rail by the locking device and the headrest is displaced up and down, the slider moves along the guide rail to E-
Move down. Then, when the slider is fixed to the guide rail by the locking device, the headrest 1- is fixed.

In addition, a guide rail is provided at the tip of the bending part of the side frame, and the headrest is supported by this guide rail in a downward (height) adjustable manner. The width can be made sufficiently small. This provides good forward visibility from the rear and rearward visibility from the front.

Example Hereinafter, this invention will be explained based on FIGS. 1 to 6.

In FIG. 1, a seat 1 includes a seat cushion 2 and a seal back 3. As shown in FIG. 4, a seat back frame 8 is disposed in the seat rack 3 shown in FIGS. 1 and 2. A side plate 9 is fixed to this seat back frame 8 by welding. The upper part of this side plate 9 is oak! -10 and 10 are fixed by welding.

■1 is a side frame for supporting the headrest. This side frame 11 includes an outer frame 12, an inner frame 13, and a cover 14. The outer frame 12 and the inner frame 13 are formed from channel members having a U-shaped cross section, and bent portions 12a and 13a are provided at the negative sides thereof, respectively. In addition, the outer frame 12 and the inner frame 13 are integrally provided at their bases, and have bent portions 12a, 13a.
They are provided at intervals below L. Bolt insertion holes 15 are provided at the bases of such outer frame 12 and inner frame 13. The bases of the outer frame 12 and the inner frame 13 allow the bolts 16 to be inserted into the bolt insertion holes 15, and the nuts lO
It is fixed to the two side plates 9 by screwing it into the two side plates 9.

By fixing in this manner, the side frame 11 is fixed as shown in FIGS. 1 and 2.
As shown in the figure, they are provided on both sides of the upper end of the seat back 3 to protrude upward. In FIGS. 1 and 2, 14a and 14a are the bent portions of the cover 14 J-;, and these bent portions 14a,
14a extend toward each other. and,
The above-mentioned bent portions 12a and 13a are covered with a cover 14.

Guide rails 17 extending vertically are welded and fixed to the tips of the bent portions 12a and 13a. The guide rail 17 has a substantially C-shaped cross section. 17a in the figure
is a guide groove of the guide rail 17.

18 is Heradres 1-. This headless 1-18
The vehicle is equipped with a headrest frame 19 as shown in FIG. Side plates 20 are provided on both sides of the headrest 1-frame 19. (the other not shown) is fixed, and this side plate 2
0. A slider 22 is fixed to the protruding end of a support rod 21 (the other not shown).

The slider 22 includes a sliding holding member 23 fixed to the support rod 21 and a locking plate 24 held by the sliding holding member 23. Moreover, this locking plate 24 has a plurality of locking holes 25.
Two holes are drilled at equal pitches. Note that such sliders 22 are provided at both ends of the support rod 21. Also,
Such a slider 22 is connected to a guide rail 17 as shown in FIG.
The guide groove 7a is arranged so as to be vertically movable.

A bracket mounting portion 26 is provided on the tip of the bent portion 13a of one of the inner frames 13 of the side frames 11.11, and a lever insertion portion is provided at the center of the bracket mounting portion 26 and the tip of the bent portion 13a. General slit 27
．． 28 are drilled in each case. A U-shaped lever support bracket 29 is welded and fixed onto the bracket mounting portion 26. A lock lever 31 of a lock device 30 is pivotally attached to this lever support bracket 1-29 by a pivot shaft 32 extending back and forth.

The tip of the engagement claw 31a of the lock lever 31 is engaged with the engagement hole 25 of the slider 22 through a slit 33 formed in the guide rail 17. Furthermore, the operating portion 31b of the lock lever 31 projects below the bent portion 13'a of the inner frame 13 through the slits 27, 28. Note that the operating section 31b is located inside the cover 14. Further, the locking device 30 includes a tension coil spring 34 interposed between the intermediate portion of the operating portion 31b and the outer frame 12.

Next, the operation of the helad restraint attachment device for the vehicle seat having such a configuration will be explained.

When adjusting the height of the headrest 1-7, first pull the operating part 31b of the lock lever 31 and release the coil spring 3.
4, the locking claw portion 31a of the lock lever 31 is removed from one of the locking holes 25 of the slider 22, and the slider 22
The lock to the guide rail 17 is released. Next, the slider 22 is fixed to the guide rail 17 by moving the headrest 7 downward and engaging the locking claw portion 31a with one of the plurality of locking holes 25. Height adjustment is completed by such an operation. Moreover, in this state,
The lock lever 31 is biased toward the slider 22 by the spring force of the tension coil spring 34.
Since the first locking pawl 31a is prevented from coming off the locking hole 25, the locking pawl 31a will not come off from the locking hole 25 due to vibration or the like.

Also, site frame 11. ! , 1 are bent in the direction toward each other, and the headrest 7 is formed into a guide rail integrated with the tips of the bent portions 12a and 13a]7
Since the side frame 1 is supported so that it can move up and down,
The width A at the base and the middle of 1.11 is sufficiently smaller than that of the conventional case, and a space B can be formed below the bent portion 14a of the cover 14, which could not be formed in the conventional case.

The rear view from the front and the front view from the rear are expanded by this space 13, and the feeling of pressure is alleviated.

Incidentally, if the side frame 11.11 of the headrest mounting device described above is applied to the seams 1 to 1' equipped with the conventional kite tube 35 for mounting the headrest as shown in FIG. It is also possible to use the conventional headrest 7'.

Fruits of the Invention As explained above, the present invention has side frames protruding in one direction from the upper end of the seat back fixed to both sides of the seat pack frame, and the side frames protruding from the upper end of each side frame in a direction approaching each other. An extending bent portion is provided, a guide rail extending vertically is fixed to the tip of each bent portion, a headrest is provided between the both side frames, and sliders fixed to both sides of the headrest 1- are provided. A headrest attachment device for a vehicle seat, which is held by the guide rail so as to be movable downward, and is equipped with a locking device that fixes and releases a slider from the guide rail;
Therefore, the width of the base side of the side frame can be made sufficiently smaller than before, and the rear visibility from the front and the front visibility from the rear can be expanded compared to before.

As a result, the feeling of pressure due to obstruction of visibility can be sufficiently reduced.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the headrest mounting device according to the present invention, FIG. 2 is a front view showing the main parts of FIG. 1,
3 is a sectional view of the headless device shown in FIG. 1, FIG. 4 is an exploded perspective view of the headless device shown in FIG. 3, and FIG. 5 is an exploded perspective view of the headless device shown in FIG. FIG. 6 is a perspective view showing the relationship between the seat and the headrest of a conventional helmet rest removing device, FIG. 7 is a partial front view of FIG. 6, and FIG. This is an explanatory diagram showing the main parts of FIG. 6. 1.1'...Sea 1~, 3...Seat back,
8...C] - Heckfrey 7%. 9.Side plate, 11..Sight frame, 12
...Outer frame, +2a...Bending part, 13...Inner frame, 13a, bending part, 14...Cover, 1
4a...Bending portion, 17...Guide rail,
17a... Guide groove, 18... Headrest. 21・Support Rondo, 22...Slider, 25...
-Latching hole, 30...locking device.

Claims (1)

[Claims] Side frames protruding upward from the upper end of the seat back are respectively fixed to both sides of the seat back frame, bent portions extending in a direction approaching each other are provided at the upper end of each side frame, and at the tips of each of the bent portions. A guide rail extending vertically is fixed, a headrest is disposed between the two side frames, a slider fixed to both sides of the headrest is held by the guide rail in a vertically movable manner, and a slider is attached to the guide rail. A headrest attachment device for a vehicle seat, characterized in that it is equipped with a locking device for fixing and releasing the headrest.