JPH0513235Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a movable head rest for a seat of a vehicle, etc. More specifically, the invention relates to a head rest stay that has a downward U-shape and a horizontal part of the stay. The present invention relates to a movable headrest that includes a main body frame that is rotatably assembled to the body frame.

[Conventional technology]

2. Description of the Related Art In general, a headrest is known in a vehicle seat, etc., which is provided at the upper end of a seat back via a headrest stay so as to support the head of a seated person on the back surface thereof. By the way, it is desired that such headrests be able to be movably adjusted according to the physique and preferences of the seated person, and various movable structures have been proposed in the past, but among these, the simplest type is the , for example, Special Public Interest Publication in 1977-
Movable structures that utilize frictional force are known, such as those disclosed in Publication No. 45 and Japanese Utility Model Application No. 61-113653. In other words, these simple movable headrests have a main body panel as the headrest main body rotatably supported on the upper end side of the headrest stay which is detachably provided on the seat back side, and the pivot shaft is attached to the plate. A movable configuration is achieved by attaching a bushing made of an elastic material such as a spring, rubber, or resin material and tightening and holding it through frictional force. By rotating the above-mentioned main body panel against frictional force, the headrest position can be adjusted as appropriate to match the feeling of the seated person.

[Problem that the invention attempts to solve]

However, according to the above-mentioned conventional movable head rest structure, the number of components including the assembly parts for tightening and holding the pivot shaft with the required frictional force increases, the structure becomes complicated, and it becomes difficult to assemble. Moreover, it is difficult to accurately apply stable frictional force to the pivot shaft, and there are also other problems such as the inability to maintain movable performance over a long period of time. It is necessary to take some measures to prevent this.

In particular, such a movable headrest structure has
The structure is as simple as possible and is excellent in terms of ease of assembly and cost.Furthermore, it securely locks the movement of the headrest at the desired adjustment position and stably maintains that position against the load when a seated person sits down. It is desirable that conditions such as what is possible are met, and these points must also be taken into consideration.

[Means for solving problems]

In order to meet such demands, the movable head rest according to the present invention is a movable head rest comprising a head rest stay exhibiting a downward U-shape and a main body frame rotatably assembled to the horizontal portion of the stay. , the main body frame has a hollow upper frame and a hollow lower frame, and the lower frame has a pair of left and right rod members extending in the front-rear direction, and on the pair of left and right rod members, a pair of rod members extending in the horizontal direction is formed. The lower friction member is placed,
An upper friction member is attached to the upper frame, and when the upper frame and the lower frame are fixed together, the horizontal part of the headrest stay is held and attached between the upper friction member and the lower friction member. It is characterized by what is done.

[Effect]

According to the present invention, the main body frame of the headrest is formed from a hollow upper frame and a hollow lower frame, and the lower frame is provided with a pair of left and right lever members extending in the front-rear direction, and the pair of left and right lever members are formed on the lower frame. A laterally long lower friction member is placed on top, the upper friction member is attached to the upper frame, and when the upper frame and the lower frame are fixed, the horizontal part of the headrest stay is moved by the upper friction member. By inserting it between the main body frame and the lower friction member, the main frame is assembled with the horizontal part of the head rest stay held between the main body frame and the horizontal part of the head rest stay, and the main body frame can be frictionally locked to the horizontal part of the head rest stay. , the rotation of the main body frame is restricted by frictional force, and the main body frame can be rotated about the horizontal portion of the stay.

〔Example〕

An embodiment of the movable headrest according to the present invention will be described in detail below with reference to the drawings.

FIGS. 1 to 4 each schematically show an embodiment of a movable headrest according to the present invention, and this movable headrest 1 includes a main body frame 2 formed of a synthetic resin material,
The head rest stay 3 is rotatably assembled.
A pad material and a skin material covering the outer periphery are attached to the outer periphery of the main body frame 2.

The head rest stay 3 has a downward U-shape, with a horizontal portion 3a at the center and side portions 3.
The lower end portions of b and 3c are detachably attached to the upper end portion of a seat bag (not shown).

The main body frame 2 has a hollow upper frame 5 and a hollow lower frame 6, and the upper frame 5 and the lower frame 6 are assembled by being fastened with screws 7 as shown in FIG. Furthermore, code 9a,
9b is a screw hole provided in the upper frame 5.

A pair of left and right lever members 13 are integrally formed with the lower frame 6 between the screw holes 11a and 11b provided at the front and rear positions of the lower frame 6, and a laterally long lower friction member is mounted on the pair of left and right lever members 13. 15 is placed. This lower friction member 15 is formed from a metal plate, a synthetic resin plate, etc.
As is clear from FIGS. 2 and 3, an arcuate curved surface 15a corresponding to the arcuate surface of the horizontal portion 3a of the headrest stay 3 is formed.

An upper friction member 17 is attached to the lower end of the upper frame 5, and like the lower friction member 15, this upper friction member 17 is made of a metal plate, a synthetic resin plate, or the like. When the upper frame 5 and the lower frame 6 are fastened together with the screws 7, the upper friction member 17 is attached at the same time.

In addition, both sides 3b and 3c of the headrest stay 3 are inserted into the lower frame 6, and the stay 3
Elongated holes 19 extending in the front-rear direction are respectively formed as relief grooves when the lower frame 6 is rotated.

Therefore, the pair of left and right beam members 1 of the lower frame 6
3, and insert the lower ends of both sides 3b and 3c of the head rest stay 3 into the elongated holes 19 from above the lower frame 6, and then insert the upper frame 5 together with the upper friction member 17. Position and arrange on the lower frame 6, and connect the upper frame 5 and lower frame 6 with screws 7.
By stopping, the horizontal portion 3a of the headrest stay 3 can be held between the upper frame 5 and the lower frame 6. Also, the upper friction member 17 and the lower friction member 1 are connected to the horizontal portion 3a of the head rest stay 3.
5 are in frictional contact with each other, and the main body frame 2 is rotatably assembled to the horizontal portion 3a of the stay 3.

[Effect of idea]

The above is the configuration of one embodiment of the movable headrest according to the present invention. According to this configuration, the main body frame is formed by an upper frame and a lower frame, and the lower frame is provided with a rod member and a lower friction member. , when an upper friction member is provided on the upper frame and the upper frame and lower frame are fixed together by screws, etc., the horizontal part of the headrest stay is inserted between the upper friction member and the lower friction member, and the frictional Because I held it in place,
The number of component parts is greatly reduced, the structure is simple and inexpensive, and assembly is simple and quick.
Also, the state of adhesion between the upper frame and the lower frame,
Furthermore, it is possible to obtain a movable headrest that can easily and reliably obtain a desired frictional locking state by selecting the upper and lower friction members, and can also obtain a strong and stable frictional locking state. I can do it.

[Brief explanation of the drawing]

Figures 1 to 4 each schematically show an embodiment of the movable headrest according to the present invention.
The figure is a perspective view of a main part, FIGS. 2 and 3 are cross-sectional views taken along lines - and -, and FIG. 4 is a front cross-sectional view. In the figure, 1...Movable head rest, 2...Main frame, 3...Head rest stay, 3a...Horizontal part, 3b, 3c...Both sides, 5...Upper frame, 6...Lower frame, 7... ...Screw, 13...
Length member, 15...Lower friction member, 17...
...Upper friction member.

Claims (1)

[Scope of utility model registration request] A headrest stay with a downward U-shape,
In the movable headrest, the main body frame has a hollow upper frame and a hollow lower frame, and the lower frame has a front and rear frame. A pair of left and right lever members extending in the direction is formed, a lower friction member that is long in the lateral direction is placed on the pair of left and right lever members, an upper friction member is attached to the upper frame, and the upper frame and the lower frame are connected to each other. A movable head rest characterized in that, when the head rest stay is fixed, the horizontal part of the head rest stay is held and attached between the upper friction member and the lower friction member.