JPH10226255A - Head rest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the left and right vibration of a seat without improving the rigidity of a seat back frame by supporting a mass body with springs pulled from frame left and right ends. SOLUTION: The frame 7 of a head rest 6 has a pair of left and right attaching brackets 10 and 10 provided in the inner side of its peripheral frame 9 and a mass body 12 is supported by springs 11 and 11 pulled out of the attaching brackets 10 and 10. The springs 11 and 11 are composed of rubber blocks and fixed between the attaching brackets 10 and 10 by bolts. A cushion material 14 made of foam plastic body and a surface material are fixed on the frame 7. Thus, by a damper mechanism composed of the springs 11 and 11 and the mass body 12 built in the head rest 6, the resonance of a seat caused by vibration during traveling is efficiently improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest mounted on a seat of a vehicle such as an automobile.

[0002]

BACKGROUND OF THE INVENTION When a vehicle travels on an uneven road surface, vibrations based on the unevenness are transmitted to wheels, suspensions, and the vehicle body, and seats installed on the vehicle body vibrate in the left-right direction to deteriorate ride comfort. .

[0003]

2. Description of the Related Art Conventionally, measures to reduce the lateral vibration of a seat include improving the rigidity of a cushion frame and a seat back frame of the seat and the rigidity of a connecting portion between the seat cushion frame and the seat back frame. Had been done.

[0004]

However, the above-mentioned measures have a problem that the weight of the sheet increases.

[0005]

The present invention, as a means for solving the above-mentioned conventional problems, comprises a frame (7) and a cushion material (14) attached to the frame (7). The frame (7) The spring (11, 11) extended from the left and right edges
A headrest (6) having a mass body (12) supported thereon is provided.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a seat frame structure (1) comprises a seat cushion frame (2) and a reclining device mounted on the seat cushion frame (2).
(4) mounted via the seat back frame
(3), the insertion tube (5, 5) on the upper side of the seat back frame (3) is provided with an insertion rod (8, 5) that is inserted from the lower side of the frame (7) of the headrest (6). 8) is inserted.

The frame (7) of the headrest (6) is shown in FIG.
As shown in the figure, a trapezoidal peripheral frame (9), a pair of left and right mounting brackets (10, 10) passed inside the peripheral frame (9), and a Spring (11,11)
And a mass body (12) supported by the springs (11, 11)
Consists of

The spring (11, 11) is made of a rubber block,
It is clamped to the mounting brackets (10, 10) by bolts (13). As the spring, a coil spring or the like is used in addition to the rubber block. Further, the springs (11, 11) may be directly extended from both sides of the peripheral frame (9) without the mounting brackets (10, 10).

As shown in FIG. 3, a cushion material (14) made of plastic foam or the like is attached to the frame (7), and a skin material (15) is attached to the cushion material (14). A headrest (6) is configured.

When a vibration in the left and right direction is exerted on the seat through the vehicle body by the vibration during running of the automobile, the seat (16) resonates in the left and right direction as shown by a dotted line in FIG. . Since the amplitude of the resonance is in the maximum mode at the upper end of the seat (16), the headrest (6) is located at this position.
When the is mounted, the resonance of the seat (16) can be efficiently improved by the damper mechanism including the springs (11, 11) and the mass body (12) built in the headrest (6).

[0011]

According to the present invention, the vibration in the left and right direction of the seat can be effectively reduced without increasing the rigidity of the seat back frame.

[Brief description of the drawings]

 1 to 4 show a specific example of the present invention.

FIG. 1 is a perspective view of a seat frame structure.

FIG. 2 is a front view of a headrest frame.

FIG. 3 is a sectional view of a headrest.

FIG. 4 is an explanatory diagram of a seat vibration state.

[Explanation of symbols]

 6 Headrest 7 Frame 11 Spring 12 Mass 14 Cushion

Claims (1)

[Claims] 1. A headrest comprising a frame and a cushion material attached to the frame, wherein the mass body is supported by springs extending from left and right edges of the frame.