JPH0451634Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a headrest device in which a headrest main body is supported by a seat bag via a stay so that its vertical position can be adjusted.

“Prior art” As a conventional headrest device, for example,
There is something like the one shown in the figure.

The headrest device 1 includes stays 3, 3 extending downward from the lower part of the headrest main body 2, which are held by holder members 5, 5 fixed to a seat back frame 4 so as to be vertically adjustable.

Insertion hole 5 of holder member 5 through which stay 3 is inserted
The diameter b is formed to be slightly larger than the diameter of the stay 3 so that the stay 3 can be moved up and down with some ease.

In order to restrict the headrest main body 2 to a predetermined vertical position, one stay 3 has engaging grooves 3a, 3a, 3.
a, and a stopper 5 that can be engaged with the engagement groove 3a is provided on the holder member 5 through which one of the stays 3 is inserted.
A is provided.

There is a slight gap between the stopper 5a and the engagement groove 3a even when they are engaged so that the stopper 5a can be easily operated.

"Problem to be solved by the invention" However, in such a conventional headrest device 1, the stopper 5a that regulates the vertical position of the headrest body 2 has no width in the vertical direction, and the insertion hole 5b of the holder member 5 and the stay 3 Since there is a slight gap between the stopper 5a and the engagement groove 3a, play occurs. Furthermore, since the holder member 5, which is the part that comes into sliding contact with the stay 3 that moves up and down, is separated from the headrest main body 2,
There was a problem in that the moment applied to the holder member 5 was large and looseness was likely to occur, resulting in poor usability.

In addition, since the vertical position is regulated by engaging the stopper 5a with the engagement groove 3a, it is only possible to adjust the vertical position in stages, making it impossible to obtain the desired vertical position, which poses the problem of poor usability. It was hot.

The present invention was devised by focusing on the conventional problems such as: To provide a headrest device that is hard to cause rattling, has a good feeling of use, and allows stepless adjustment of the vertical position and is easy to use. It is an object.

``Means for Solving the Problems'' The gist of the present invention for achieving the above object is to provide a headrest device in which a headrest body is supported by a seat bag via a stay so that its vertical position can be adjusted. An insertion hole is bored in the lower part through which the upper end of the stay can be inserted and slid, the lower end of the stay is fixed to the seat bag, the upper end of the stay is inserted into the insertion hole, and the stay has a rod shape that extends vertically. A member is fixed to either the headrest main body or the upper end side of the stay, and the rod-shaped member is fixed to a holder member that slidably holds the rod-shaped member by frictional force over a predetermined length in the vertical direction. The headrest device is characterized in that it is fixed to the other of the headrest main body or the stay on the upper end side.

"Operation" When the head is rested on the headrest, the holder member holds the rod-shaped member fixed to the upper end of the headrest body or the stay at a predetermined length in the vertical direction, and the holder Since the member is provided within the headrest main body, the moment that the holder member receives from the headrest main body is reduced, and play is less likely to occur.

In addition, when moving the headrest body up and down, the rod-shaped member is held by frictional force, so you can move the headrest body up and down without having to operate a stopper etc. that regulates the vertical position. The position can be adjusted steplessly and can be easily moved to the desired vertical position.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

1 and 2 show an embodiment of the present invention.

As shown in FIG.
In this case, the lower end portions 21, 21 are the seat back frame 5.
A headrest main body 40 is attached to stays 20, 20 which are fixed to the main body 0 so that its vertical position can be adjusted.

The lower part of the headrest main body 40 is a lower cover 4
1, and insertion holes 43, 43 are formed in the bottom surface 42 of the lower cover 41, through which the stays 20, 20 can be inserted by tightening members having a diameter slightly larger than the outer diameter of the stay 20. has been done.

As shown in FIG. 2, the bottom surface 4 of the lower cover 41
A rod-shaped member bracket 44 that supports the rod-shaped member 30 extending in the vertical direction is fixed at the center between the two insertion holes 43, 43.

The rod-shaped member 30 has an upper end 31 fixed to the rod-shaped member bracket 44 and a lower end 32 fixed to the bottom surface 42 of the lower cover 41.

Upper end portions 22, 22 of the stays 20, 20 are inserted into insertion holes 43, 43 of the headrest main body 40, respectively.

A holder bracket 25 for attaching a holder member 60 that grips the rod-shaped member 30 is installed between the upper ends 22, 22 of the stays 20, 20, which enter through the insertion holes 43, 43 and are located inside the headrest main body 40. ing.

The holder member 60 is formed by forming a leaf spring having a predetermined length in the vertical direction into a U-shaped play so that the rod-shaped member 30 can be gripped, and the both ends of the U-shape are fixed by a bolt member 63 passing through both ends 61 of the U-shape. The width between 61 and 61 can be adjusted.

The holder member 60 grips the rod-shaped member 30,
It is fixed at the center 26 of a holder bracket 25 installed between the stays 20, 20.

Next, the action will be explained.

When the head can be rested on the head rest main body 40, the rod-shaped member 30 fixed on the head rest main body 40 side is held by the holder member 60 provided on the stable bracket 25, and the wear force is Accordingly, the headrest body 4
The vertical position of 0 is regulated.

If the abrasion force is weak and the vertical position of the headrest main body 40 cannot be properly regulated, tighten the bolt member 63 of the holder member 60 to narrow the width between the ends 61, 61 of the holder member 60.
All you have to do is increase the abrasion force.

Holder member 6 provided on the stay 20 side
0 is a predetermined length in the vertical direction, and the headrest main body 4
The stay 20 is inserted into the insertion hole 43 of the headrest main body 40, and the stay 20 is inserted into the insertion hole 43 of the headrest main body 40.
Since the headrest main body 40 is supported at two locations on the upper and lower sides of the stay 20 against loads applied from the front and rear or the left and right directions, play is less likely to occur.

Furthermore, since the holder member 60 is provided within the headrest main body 40, the moment that the holder member 60 receives from the headrest main body 40 is reduced, and play is less likely to occur.

When moving the headrest main body 40 up and down, the headrest main body 40 is moved in the direction of a desired vertical position.

The rod-shaped member 30 provided on the headrest main body 40 side slides on the holder member 60 provided on the stay 20 side, and the insertion hole 43 of the headrest main body 40 slides on the stay 20. go.

Since the headrest main body 40 is held by frictional force, the vertical position of the headrest main body 40 can be adjusted steplessly by simply moving the headrest main body 40 up and down, without operating a stopper or the like that regulates the vertical position. It can be easily moved to the desired vertical position.

Note that in this embodiment, the holder member 60
is provided on the stay 20 side and the rod-shaped member 30 is provided on the headrest body 40 side, but the holder member 60 may be provided on the headrest body 40 side and the rod-shaped member 30 on the stay 20 side.

"Effects of the Invention" According to the headrest device according to the present invention, since the holder member holds the rod-shaped member at a predetermined length in the vertical direction, no rattling occurs and the usability can be improved.

Furthermore, the headrest body is held by the holder member with frictional force, and the vertical position can be adjusted steplessly by simply moving the headrest body, so it can be easily moved to the desired vertical position. This can improve usability.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, FIG. 1 is an overall perspective view of the headrest device, FIG. 2 is a sectional view taken along the line of FIG. 1 of the headrest device, and FIG. 3 is a conventional one. FIG. 2 is an overall front view of the headrest device of FIG. 10...Headrest device, 20...Stay,
21...Lower end portion, 22...Upper end portion, 30...Bar-shaped member, 40...Headrest main body, 43...Insertion hole, 50...Seat bag frame, 60...Holder member.

Claims (1)

[Claims for Utility Model Registration] In a head restraint device in which a head restraint body is supported by a seat bag via a stay so that its vertical position can be adjusted, an insertion hole is formed in the lower part of the head restraint body through which the upper end of the stay can be inserted and slid. the lower end of the stay is fixed to the seat bag, the upper end of the stay is inserted into the insertion hole, and a vertically extending rod-like member is attached to either the headrest main body or the upper end of the stay. A holder member that is fixedly attached to the headrest body or the stay that holds the rod-shaped member slidably over a predetermined length in the vertical direction by frictional force is attached to the other side of the upper end of the headrest body or the stay to which the rod-shaped member is fixedly attached. A headrest device characterized by being permanently installed.