JPS6322932Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to a headrest device provided on the backrest of a vehicle seat, and particularly to a vehicle equipped with a reversible backrest that can be moved to either the front or rear end of the seat. The present invention relates to a headrest device suitable for application to a vehicle seat, etc., which can be seated face-to-face with a person seated in the rear row by reversing the backrest portion.

[Prior art]

For vehicles, such as wagon type cars, 3
Vehicles that are equipped with rows of seats, with the second row seat rotating so that it can sit facing a person seated in the third row, have come into use. When the seat is rotated, the surface of the headrest main body facing the back of the head of the seated person remains unchanged, so the function of the headrest main body is not impaired. However, the mechanism for rotating the seat is heavy and has a complicated structure, resulting in an increase in vehicle weight, worsening fuel efficiency, and increasing costs. Therefore, there was a need for a seat that could be seated face-to-face with a simple means, and as a result, a seat with a structure in which the backrest part could be reversed was attracting attention as a seat that could meet this demand. The seat with this reversible backrest has a simple structure and does not significantly increase the weight of the seat, nor does it increase the overall cost of the seat. However, when the backrest portion is inverted, the surface of the headrest body that faces the back of the head of the seated person faces the opposite side, resulting in a drawback that the function of the headrest body is significantly impaired.
Therefore, when the backrest is turned over, the stay of the headrest can be pulled out from the backrest.
I had the trouble of having to turn in the opposite direction and insert the stay again.

〔the purpose〕

The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a headrest device for a vehicle in which the headrest body can also be reversed with a simple operation when the backrest portion is reversed.

〔composition〕

In order to achieve the above object, the present invention has the upper end of the shaft rotatably and vertically movable or fixedly attached to the lower surface of the headrest body, and the lower end of the shaft fixedly attached to the plate or rotatably and vertically movable. A stay to be inserted into the backrest is attached to the lower surface of the plate, at least one engagement pin is provided on the upper surface of the plate, and an engagement hole into which the engagement pin is inserted is formed in the lower surface of the headrest main body. However, a biasing member is attached to the shaft to keep the plate and the lower surface of the headrest body in contact with each other at all times.

〔Example〕

A preferred embodiment of the present invention will be described below with reference to the drawings. FIG.
This figure shows a vehicle seat configured with a so-called reversible backrest that can be moved to either the front or rear end of the seat.The reversal of the backrest 1 is achieved by simply rotating both sides of the arm 3 to both sides (the drawing shows only one side). The figure shows what can be achieved by attaching it. Various mechanisms can be employed as the reversing mechanism of the backrest portion 1, and the one shown in the drawing is merely an example. In Figure 1,
Reference numeral 4 indicates the headrest body, and reference numeral 5 indicates the stay. The stay 5 can be adjusted in height, ie, locked at a desired depth of insertion into the backrest 1, in the same way as a normal headrest device. A shaft 7 is rotatably attached to the lower surface of the headrest body 4, for example, to a frame (not shown) forming the skeleton of the headrest body 4 or to a bottom plate 6 as shown in FIG. The large diameter portion 7a of the shaft 7 is formed to be larger than the diameter of the hole 6a in the bottom plate 6 to prevent the shaft 7 from falling out from the hole 6a. A biasing member 8 is interposed between the large-diameter portion 7a of the shaft 7 and the bottom plate 6 to constantly press the headrest body 4 downward. The reason why the headrest body 4 is pressed downward by the biasing member 8 is because the lower end of the shaft 7 is fixedly attached to the plate 9 to which the stay 5 is fixed.
This is because it is pressed against the plate 9 by the biasing member 8 via the bottom plate 6 (the state shown in FIG. 2). Two engagement holes 10, 10 are bored in the bottom plate 6,
Engagement pins 11, 11 provided on the plate 9 are inserted into the plate 9.

The biasing member 8 may be attached to the lower side of the shaft 7 (see FIG. 4). In this case, shaft 7
A large diameter portion 7b is formed at the lower end of the plate 9.
A hole 9a is bored in the hole 9a, and the shaft 7 can rotate and move up and down within this hole 9a. The upper end of the shaft 7 is fixed to the bottom plate 6. As long as this biasing member 8 has the function of always bringing the lower surface of the head rest main body 4 (the bottom plate 6 in the embodiment) into contact with the plate 9 by its biasing force,
The coil spring shown in the figure does not have to be used, and the mounting location may be changed.

Next, the operation of the embodiment shown in FIGS. 2 and 3 will be explained based on FIG. 5. When the backrest portion 1 is reversed to the position shown in the phantom line in FIG. The surface facing the back of the head will be located on the opposite side. Therefore,
After inverting the backrest portion 1, the headrest body 4 is pulled upward (in the direction of arrow X in FIG. 5). At this time, the biasing seat member 8 is contracted and the engagement pin 11 comes out of the engagement hole 10. Then, in this state, when the headrest main body 4 is rotated 180 degrees in the direction of arrow Y in FIG. 9 come into contact with each other, and the engagement pin 11 is inserted into the engagement hole 10 again, making it impossible for the headrest main body 4 to rotate.

In the illustrated embodiment, two engaging pins 11 are provided, but one engaging pin 11 covers two engaging holes 1.
It may be inserted in any of the 0's.

〔effect〕

As explained above, the present invention is effective for a headrest device for a vehicle equipped with a reversible backrest, and the upper end of the shaft is rotatably and vertically movable or fixedly attached to the lower surface of the headrest main body. The lower end is fixedly attached to the plate or is attached rotatably and movable up and down, a stay that is inserted into the backrest is attached to the lower surface of the plate, at least one engagement pin is provided on the upper surface of the plate, and the lower end of the headrest body is attached to the lower surface of the head rest body. An engagement hole into which this engagement pin is inserted is formed in the shaft, and a biasing member is attached to the shaft to keep the plate and the lower surface of the headrest body in constant contact.The structure is simple, and the headrest body can be reversed and It has excellent operability.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a vehicle seat equipped with a reversible backrest; Fig. 2 is a sectional view of the device of the present invention;
The figure is a perspective view of the main part, FIG. 4 is a sectional view showing an example in which the attachment location of the biasing member is changed, and FIG. 5 is an explanatory diagram of the operation. 1...Backrest part, 4...Headrest body,
5...stay, 7...shaft, 8...biasing member, 9...plate, 10...engaging hole, 11...
Engagement pin.

Claims (1)

[Scope of claim for utility model registration] In a headrest device installed on a vehicle seat, the upper end of the shaft is rotatably and vertically movable or fixedly attached to the underside of the headrest body, and the lower end of the shaft is fixed and attached to a plate. A stay that is inserted into the backrest portion is attached to the lower surface of the plate, and at least one engagement pin is provided on the upper surface of the plate, and this engagement pin is inserted into the lower surface of the headrest body. 1. A head restraint device for a vehicle, characterized in that an engaging hole is formed in the shaft, and a biasing member is attached to the shaft to keep the plate and the lower surface of the head restraint body in contact with each other at all times.