JPH0339080Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a headrest device provided in a vehicle seat or the like.

[Conventional technology]

2. Description of the Related Art In a seat such as an automobile, a headrest device for supporting the head of a seated person is provided on the upper part of the seat bag.

In recent years, in this headrest device, as shown in FIG.
is supported on both sides thereof,
So-called gate-type headrests are widely practiced.

In this headrest device, a movement adjustment mechanism is provided between both side surfaces of the headrest main body 2 and the inner surfaces of both support arms 1 corresponding to the both side surfaces. As shown, on the inner surface of both support arms 1,
A rail member 4 having a square cross section and having a plurality of engagement holes 3 at required intervals is fixed in the vertical direction, and sliders 5 are attached to both side surfaces of the headrest body 2 to be slidably fitted to the rail member 4. , the slider 5 is provided with engagement protrusions 6 that are elastically engaged with the engagement holes 3 of the rail member 4, and the engagement protrusions 6 are sequentially engaged by moving the headrest main body 2 up and down. By engaging with the matching hole 3 and locking, the height position of the headrest body can be adjusted.

[Problem that the invention attempts to solve]

However, in this conventional headrest device, since the rail member 4 is formed in a straight line, the headrest main body 2 is simply adjusted to move in the vertical direction, and is adjusted to a position that matches the physique or preference of the seated person. It was impossible.

SUMMARY OF THE INVENTION The present invention has been developed in view of the above, and an object of the present invention is to provide a headrest device that can be moved in the vertical direction and adjusted in the longitudinal direction at the same time, thereby improving the above-mentioned drawbacks.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is a headrest device in which a headrest main body is supported by left and right support arms provided at the upper part of a seat bag. A rail member is attached to one of the side surface of the headrest main body and the inner surface of the support arm corresponding to the side surface, and is formed in a circular arc shape concavely curved forward, and has a plurality of engagement holes at required intervals, and the rail member is attached to the other side. A slider that engages with the rail member is provided, and the slider is provided with an engagement pin as an engagement member that is always biased in the projecting direction and engaged with the engagement hole of the rail member.

[Effect]

The measures described above operate as follows.

When the engagement pin is engaged with the engagement hole, the headrest body is locked so that it cannot move up and down, and by removing the engagement pin from the engagement hole from this state, the headrest body can be moved along the rail member. By moving the headrest body up and down to a desired height position and engaging the engagement pins with the corresponding engagement holes, the headrest body is locked at that position.

In this vertical movement adjustment, since the rail member is formed in an arc shape that concavely curves forward, the headrest main body is moved so as to be rotated back and forth, so that the front and rear movement adjustment can be performed at the same time as the vertical movement. It will be done.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. Parts corresponding to those of the conventional example shown in FIGS. 4 and 5 described above are given the same reference numerals.

In this example, a rail member 11 having a cross-section shaped like an arc concavely curved forward is fixed to the inner surface of both support arms 1.
A plurality of engagement holes 12 are bored at required intervals in the bottom surface of the device 1 .

On the other hand, sliders 14 are fixed to both side surfaces of the headrest main body 2 via connecting cylinders 13. The slider 14 is formed in an R shape corresponding to the arc of the rail member 11, and is slidably fitted with its both side portions in close contact with the inner surfaces of both side portions of the rail member 11. The headrest main body 2 is attached to the support arm 1 so as to be slidable in the vertical direction without being rotated.

Further, the slider 14 is provided with an engagement pin 15 that is engaged with the engagement hole 12 of the rail member 11 so as to be freely retractable.

The engagement pin 15 passes through an insertion hole 16 formed in the center of the slider 14 and an insertion hole 17 formed in the side surface of the headrest frame 2a.
The washer 18 and the headrest frame 2a fitted on the inner surface of the slider 14 on the circumferential surface thereof
Coil spring 1 compressed and inserted between the side parts of
9, it is always biased toward the outside, that is, in the direction in which it is engaged with the engagement hole 12 of the rail member 11.

Further, an operating lever 20 is pivotably supported in a substantially central portion of the headrest frame 2a by a shaft pin 21 so as to be rotatable in the lateral direction.
Connecting holes 2 are provided on both sides of the shaft, sandwiching the shaft support.
0a and 20b are drilled, and these connecting holes 20a and 20b are connected via connecting wires 22, respectively, to connecting holes 15a drilled in the inner ends of the engaging pins 15 arranged on the left and right. Yes, there is also control lever 2
The extension side end of the headrest body 2 passes through a hole 23 formed in the lower side of the headrest main body 2 and is exposed downward.

In the head rest device of this example configured as described above, the engagement pin 15 is connected to the engagement hole 12 of the rail member 11.
When the headrest main body 2 is engaged with either of the two, the headrest main body 2 is locked so that it cannot move up and down, and when the operating lever 20 is rotated in the direction of the arrow from this state, the engagement pin is connected via the connecting wire 22. 1
5 is pulled and slides inward against the biasing force of the coil spring 19, thereby causing the engagement pin 15 to
is pulled out from the engagement hole 12 of the rail member 11, so that the headrest main body 2 becomes slidable along the rail member 11.

After moving the headrest main body 2 up and down to a desired height position, let go of the operating lever 20 and use the biasing force of the coil spring 19 to move the engagement pin 15 into the corresponding engagement hole. 12, the headrest main body 2 is locked against vertical movement.

In this vertical movement adjustment, the rail member 11
is formed in an arc shape concave forward, so when the headrest main body 2 is slid upward, the headrest main body 2 is rotated forward, and the front upper end a of the headrest main body 2 is moved forward. If the headrest main body 2 is lowered from this state and returned to the intermediate position, the seated person's head will be supported in the front central part b in a vertical state. When the head rest body 2 is further slid downward from this position, the head rest body 2 is moved so as to be rotated rearward.
The lower end c of the front surface extends forward to support the head of the seated person in front (see the two-dot chain line in the figure).

In this way, in the headrest device of this example, the headrest body 2 is moved back and forth at the same time as the headrest body 2 is adjusted up and down.
You can precisely adjust the position to suit your physique or preference.

Furthermore, in adjusting the movement of the headrest main body 2, the slider 14 is formed in an R shape corresponding to the arc of the rail member 11, and is tightly fitted to the rail member 1, so that the headrest main body 2 is free from play. It slides smoothly without any scratches, and is securely held in place.

Note that in the configuration of this example, the rail member 11 and the slider 14 are arranged in the opposite arrangement, that is, the rail member 11 is fixed to the headrest main body 2 side, and the support arm 1
Even if the slider 14 is attached to the side, the movement adjustment of the headrest main body 2 can be performed in the same way as described above.

In addition, the slider 14 has R as shown in this example.
The rail member 1 is not limited to the one formed in the shape of
If the headrest body 2 is shaped so that it is slidably supported at at least three points on the inner surface of both sides of the rail member 11, two points on one side and one point on the other side, when fitted to the rail member 1, the headrest body 2 is a support arm. 1 and is securely held without being rotated.

Further, the locking mechanism of the headrest main body 2 is not limited to one in which the engagement pin 15 is engaged with and disengaged from the engagement hole 12 by operating the operating lever 20 as shown in this example. In place of the engagement pin 15, an engagement protrusion that is elastically engaged with the engagement hole 12 is provided, and the required force is applied directly to the headrest main body 2 to move it up and down, so that the engagement protrusions are successively adjacent to each other. Various other locking mechanisms may also be employed, such as a configuration in which the movement of the headrest body 2 is adjusted by engaging with the engagement hole 12.

[Effect of idea]

As described above, in the headrest device of the present invention, since the rail member is formed in a circular arc shape concave forward, the headrest body is moved so as to be rotated back and forth when adjusting its vertical movement, and simultaneously moves up and down. It also moves back and forth, allowing the seated person to accurately adjust the headrest body to a position that suits their physique or preference.

[Brief explanation of drawings]

Figure 1 is a side view of the headrest device of the present invention;
2 is an exploded perspective view of the same, FIG. 3 is a partially cutaway front view of one side thereof, FIG. 4 is a perspective view of a conventional headrest device, and FIG. 5 is an exploded perspective view of the same. In the figure, 1 is a support arm, 2 is a headrest main body, 11 is a rail member, 12 is an engagement hole, 14 is a slider, and 15 is an engagement pin as an engagement member.

Claims (1)

[Claims for Utility Model Registration] A headrest device in which a headrest main body is supported by left and right support arms provided at the upper part of a seat bag, the side surface of the headrest main body and the support arm corresponding to the side surface. A rail member formed in an arc shape concave to the front and having a plurality of engagement holes at required intervals is attached to one of the inner surfaces of the rail member, and a slider that engages with the rail member is provided on the other side, A headrest device characterized in that the slider is provided with an engagement member that is always biased in the projecting direction and engaged with the engagement hole of the rail member.