JPH09149837A - Headrest device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the feeling of incompatibility from being felt when a head part touches a headrest by forming a covering part for covering the periphery of a supporting part and a bent part on a frame in a headrest device provided with the frame to be frictionally engaged with the supporting part formed on a stay held by a seat back. SOLUTION: This headrest device 1 is constituted of the stay 2 and a headrest main body 3, etc., and the stay 2 is composed of the supporting part 21 and a vertical rod part 22 and supports the headrest main body 3 on the seat back. The headrest main body 3 is constituted of the frame 4 and a pad 5 and the frame 4 is provided with the bent part 7 bent at the center part in the main body part 41. Then, it is wound around the stay 2 by the covering part 43a by curling an extension part 43 to a front inner side so as to wind the extension part 43 around the supporting part 21. By forming the covering part 43a and an overlapping part 43b in the extension part 43 in such a manner, the covering part 43a is frictionally engaged with a horizontal rod part 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest device for supporting the head of a seated person.

[0002]

2. Description of the Related Art Conventionally, as a headrest device for protecting the head of a seated person, Japanese Patent Laid-Open No. 61-253012 discloses a headrest located behind the occipital region and a headrest located forward of the headrest and behind the cervical vertebra. A headrest device for a cervical spine support that is positioned is disclosed, and in Japanese Utility Model Laid-Open No. 1-150047, a seat is formed by vertically separating a central portion of the headrest and rotating a rotating member provided on a side portion. A headrest device is disclosed in which the shape of the central portion is changed by a cam mechanism provided inside the cushion.

[0003]

However, in the apparatus disclosed in the above-mentioned Japanese Patent Laid-Open No. 61-253012,
When the head of the seated person hits the headrest, the cervical spine support is located in front of the headrest, which makes the seated person feel uncomfortable.

Further, the one disclosed in Japanese Utility Model Laid-Open No. 1-150047 has a problem that the structure of the headrest becomes complicated because the cam mechanism is provided inside the headrest.

Therefore, it is a technical object of the present invention to provide a headrest device for protecting the head of a seated person with a simple structure without giving the seated person a feeling of strangeness.

[0006]

In order to solve the above technical problems, the first technical means taken in the present invention is as follows.
A stay 2 held by a seat back and having a support portion 21
Also, in the headrest device 1 having the frame 4 supported so as to frictionally engage the support portion 21 with a predetermined friction force, the frame 4 has the covering portion 4 that covers the periphery of the support portion 21.
3a and the bent portion 7 in which the central portion 8 is bent are provided so that the support portion 21 is frictionally engaged with the upper portion to be rotatable with respect to the stay 2. With the above configuration, the frame 4 can be made of one plate material such as an iron plate, and the headrest body 3 can be formed with a simple configuration. Further, unlike the conventional device, the frame 4 does not have a protruding portion at the cervical spine position, so that the user does not feel discomfort even when the head of the seated person touches the headrest. For example, the rotation of the headrest has the center of rotation in the upper part, and the bent portion 7 is provided in the central portion 8 to prevent the seated person from feeling uncomfortable.

In the second aspect, the stay 2 is supported by providing the frame 4 with the elongated hole 9 by burring, inserting the stay 2 into the elongated hole 9, and winding the covering portion 43a around the support portion 21 of the stay 2. Therefore, it is not necessary to use another member for doing so. By providing the elongated hole 9 by burring from the surface of the frame 4, a flange is formed on the back surface of the elongated hole 9, and when a rearward load is applied, the flange and the vertical rod portion of the stay 2 are formed. When 22 hits, this flange also functions as a stopper that restricts rotation.

In the third aspect, the elongated hole 9 of the frame 4 serves as a stopper when the rear surface of the frame 4 contacts the stay 2.
Since the stopper portion 10 is provided in the lower part of the stopper, the stopper becomes a double system, and even when a large load is applied to the rear, the load applied to the headrest body 3 is
It will be stopped by 21a.

According to the present invention, since the stopper portion 10 is formed by forming the convex portion by punching out the lower portion of the elongated hole 9, it is not necessary to use another member as a stopper, so that it is easy. It is possible to form a stopper.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, a headrest device 1 supports the head of an occupant (seat) seated on a vehicle seat (not shown), and mainly comprises a stay 2 and a headrest body 3. It is configured. The stay 2 uses the headrest body 3 as a seat back (not shown).
It is supported above and has an inverted U-shape having a support portion 21 and a vertical rod portion 22 each having a substantially circular cross section. The vertical bar portion 22 of the stay 2 is supported by the seat back and can be moved in the vertical direction. The headless main body 3 is composed of a frame 4 and a pad 5 described later. The frame 4 serves as a rigid body of the headrest device 1, and the pad 5 serves as a cushion body of the headrest device 1 that covers the frame 4. The pad 5 is insert-molded to the frame 4.

The frame 4 of the headless main body 3 is made of a single plate material such as an iron plate, and has a main body portion 41 and an extended portion 4 extending from the upper edge and both side edges of the main body portion 41.
2 and an extension portion 43 extending from the upper edge are integrally formed. The extension portion 42 is curled so as to bend inwardly rearward (right side in FIG. 2) and has no edge. This enables insert molding of the pad 5 to the frame 4 described above.

Further, the main body portion 41 of the frame 4 has a bent portion 7 which is bent at a central portion 8 in the vertical direction, and the extending portion 43 is forwarded so that the extending portion 43 is wound around the supporting portion 21 of the stay 2. Curling to the inside allows coating 4
It is wound around the stay 2 by 3a. At this time, the stopper portion 21a is formed by forming a flange on the back surface when a long hole is formed by burring for inserting the stay 2.

That is, in this assembled state, the extending portion 43 comprises a substantially circular coating portion 43a which is in close contact with the supporting portion 21 and frictionally engages with it, and an overlapping portion 43b which overlaps with the main body portion 41. To do. A through hole 43 formed in the overlapping portion 43b is formed at a portion of the body portion 41 where the overlapping portion 43b overlaps.
The flange 41a, which is inserted into c and is caulked to the overlapping portion 43b, is burred. By crimping the overlapping portion 43b of the flange 41a, the overlapping portion 43b becomes
It is pressure-fixed to the main body portion 41, whereby the winding portion 43a is frictionally engaged with the horizontal rod portion 21 with a predetermined friction force.

In this way, the headrest main body 3 is held at the head support position by the frictional force of the extension portion 43 with respect to the support portion 21 of the stay 2, and the headrest main body 3 is frictional force with respect to the stay 2 of the support portion 45. The head support position is adjusted back and forth by rotating the stay 2 with the above force. This headless body 3
The front-rear adjustment range is defined as a range from where the vertical bar portion 22 of the stay 2 contacts the upper portion of the stopper portion 21a to when the lower portion of the stopper portion 21a contacts the stay 2 and rotation is restricted.

Further, a plurality of rib portions 41c and 43d extending in the vertical direction shown in FIG. 1 and projecting outward are respectively projected from the main body portion 41 and the extending portion 43, whereby the frame is formed. The strength of No. 4 is improved and its rigidity is secured.

FIG. 4 shows a second embodiment.

Particularly, the stopper portion is shown, but the stopper portion 10 for restricting the rotation of the frame 4 with respect to the stay 2 is formed with a convex portion 11 by punching out the lower portion of the elongated hole 9 of the frame 4. It is made by being done. By providing the convex portion 11 in this way, the stopper becomes a double system,
Headrest body 3 even when a large load is applied to the rear
The load related to is stopped by the stopper portions 10 and 21a. The second stopper portion 10 rotates counterclockwise with respect to the rotation fulcrum with respect to the rotation of the headrest body 3 compared to the state in which the stopper portion 21a is in contact with the vertical bar portion 22 of the stay 2. In this case, the convex portion 11 is provided so as to function as a stopper. Since the convex portion 11 is formed by punching out the frame, it is not necessary to use another member as the stopper.
It can be easily made by forming the stopper portion 10 at the same time when the elongated hole 9 is opened.

The extending portion 43 for supporting the frame 3 on the stay 2 is formed integrally with the frame 3 by extending from the body portion 41, but a separate component corresponding to the extending portion 43 is a body portion 41. The structure may be attached to.

[0020]

According to the present invention, the frame is provided with the covering portion for covering the periphery of the supporting portion and the bending portion with the central portion bent, and the supporting portion is frictionally engaged with the upper portion to rotate with respect to the stay. It is possible to form the frame that constitutes the headrest with a simple structure, and by bending the center part of the frame in the up-down direction, even if the head of the seated person touches the headrest, a feeling of strangeness is felt. Do not give.

Further, it is not necessary to use a member for supporting the stay by providing the frame with an elongated hole by burring, inserting the stay through the elongated hole, and winding the covering portion around the supporting portion of the stay. By providing the elongated hole of this frame by burring, a flange is formed on the back surface of the frame, and when the flange and the vertical bar portion of the stay hit against the load to the rear, this flange also functions as a stopper. It will be.

Further, since the stopper is provided in the lower part of the elongated hole as a stopper when the rear surface of the frame comes into contact with the stay, the stopper becomes a double system and a large load is applied to the rear. However, the load on the headrest body is stopped by the stopper part. Since the stopper portion is formed by forming the convex portion by punching out the lower portion of the elongated hole, it is not necessary to use another member as the stopper, so that the stopper portion can be easily formed. It is possible. From the above,
With a simple structure, it is possible to provide a headrest device that does not give a seated person an uncomfortable feeling.

[Brief description of the drawings]

FIG. 1 is a front view of a headrest device according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a perspective view of FIG. 1.

FIG. 4 is a side view of a headrest device according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Headrest device 2 Stay 4 Frame 21 Horizontal bar part (supporting part) 21a Stopper part 41 Body part 43 Extended part 43a Winding part (covering part) 41c, 43d Rib part

Claims (4)

[Claims] 1. A headrest device having a stay supported by a seat back and having a supporting portion, and a frame supported so as to frictionally engage with the supporting portion with a predetermined frictional force, wherein the frame has a periphery of the supporting portion. A headrest device, comprising: a cover portion for covering the base portion and a bent portion having a center portion bent, and the upper portion is frictionally engaged with the support portion so as to be rotatable with respect to the stay. 2. The headrest device according to claim 1, wherein the frame is provided with a long hole of a burring hole through which the stay is inserted. 3. The headrest device according to claim 2, wherein the frame is provided with a stopper portion below the elongated hole as a stopper when the rear surface of the frame comes into contact with the stay. 4. The headrest device according to claim 3, wherein the stopper portion is formed by forming a convex portion by punching out a lower portion of the elongated hole.