JPS6162409A - Headrest apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] 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 vehicle seats, particularly automobile seats, a headrest is provided above the seat back to support the head of a seated person.

Various types of headrests have been proposed and implemented that can be adjusted to move forward and backward and up and down according to the preference of the person sitting on the seat. As shown in the figure, the headrest body (the lock release member (32) is protruded from the side surface of the 3D, and while operating this lock release member C32+, the headrest body C31) is moved back and forth or up and down with the required force to release the seat back. (Movement adjustment is made for 3aK.

[Problem that the invention seeks to solve]

However, this conventional headrest has the drawback that adjustment requires operation with both hands, which makes the operation complicated and particularly difficult to adjust while the user is seated.

Additionally, from a design perspective, many so-called portal-shaped headrest devices have recently been implemented, in which the headrest body is attached to support frames extending from both sides of the seat pack. There are, but
The conventional headless (as shown in FIG. 6) 4311 cannot be applied because the lock release member 07J is protruded from the side surface.

Therefore, the present invention has been made in view of this point, and can be adjusted to a desired position by simply applying the required force to the headrest body and moving it, without using an operating member such as a lock release member. The purpose is to provide a headrest that allows for

[Means for solving the problem] That is, in order to achieve the above-mentioned object, the present invention fixes the first guide rail (5) to both side parts of the headrest body (4), and fixes the first guide rail (5) to the side part of the seat back (2). The left and right support frames (31 (31K) first guide rail (5)
Fix the second guide rail (9) so that it intersects with
and these first and second guide rails (5) and (9
) are formed with a plurality of engaging parts (6) and 0υ) in the longitudinal direction, respectively, and a corresponding engaging part (0υ) is formed between the first guide rail (5) and the second guide rail (9). 6) and 0
0), the first and second engaging members 0 are removably engaged with the first and second engaging members 0;
A connecting member [+31] provided with η and 0a is movably interposed.

[Effect]

The measures described above operate as follows.

The first engagement member (171) engages with any of the engagement holes (6) of the first guide rail (5), and the second engagement member αa engages with the engagement hole (6) of the second guide rail (9). One of the retention holes (
When engaged with 101, the headrest body (4) is locked against movement in any direction with respect to the support frame (3).

From this state, when a required first force is applied to the headrest body (4) in the longitudinal direction of the idle rail (5), this force causes the first engagement member (1η) to disengage from the engagement hole (6). When the first guide rail (5) is slidable relative to the connecting member (131) and a required force is applied to the headrest body (4) in the longitudinal direction of the second guide rail (9),
Due to this force, the second engagement member U& is disengaged from the engagement hole (IG) and becomes slidable together with the connection member a31Fi and the headrest main body (4) relative to the second guide rail (9). The main body (4) can be moved and set to a desired adjustment position.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to FIGS. 1 to 5.

In the figure, (1) shows a vehicle seat, and a support frame T3H31 extends upward from both sides of the seat rose ((2)), and both support frames f
31 (on which a headrest main body (4) is supported so as to be movable and adjustable in the front-rear direction and the up-down direction on both side surfaces thereof.

This headrest main body (4) is formed by a frame body (j) made of sheet metal or resin material, surrounding the surface of an elastic material and a skin material. A first guide rail (5) is fixed to.

This first one is IDrail (5) V! , is formed in a C-shape in cross section, and has an engagement hole (61C (6
a) (6b) ] are drilled at appropriate intervals,
The front end part (5a) is fixed to the back side of the front side part (4a) of the frame (45), and the rear end part (5b) is fixed to the rear side part (4a) of the frame (A).
The frame body (a) K is attached by fitting and fixing into the notch (7) formed on the edge of the frame (a). In addition, on the rear end (5b) side of the bottom of the guide rail (5) of this drawer 1, there is a screw (8) for screwing a slide plate I (described later) to prevent it from coming off after being inserted therein. A hole (8a) is drilled.

On the other hand, a second guide rail (9) is fixed to the support frame (3) of the seat bank (2) so as to be substantially orthogonal to the first guide rail (5). This second guide rail (9) is formed in approximately the same shape as the first guide rail (5), and the bottom surface thereof also has a plurality of retaining holes (1 (10a) (10b) )
is drilled, and a pin (
lla) (nb) to the support frame (3). Furthermore, a bent portion (91) is formed on the upper end portion (9a) of the second guide rail (9) to prevent the slide plate d5) from coming off after being fitted into the slide plate d5, which will be described later. A screw hole (12a) into which a screw 1121 is screwed is formed on the 9b) side for the same purpose.

The first guide rail (5) and the second guide rail (9) are connected by a connecting member OJ.

This connecting part 1. t[13] is the first guide rail (5)
The slide plates 0 and 151 that are fitted into the second guide rail (9) and the second guide rail (9) are integrally fixed to both end ports of the cylindrical body (I61) by welding or the like, and this connecting member 03), a locking mechanism is configured inside.

That is, this locking mechanism is arranged within the cylindrical body aθ, and has first and second slides protruding from both slide slopes α・0 and holes (14a) and (15a) drilled in (151) so as to be retractable. 2 engaging members (1η and (181), and both engaging members α71 (
18) The coil springs aJ and K are inserted in a compressed state between them, and the first and second engaging members an and a& have their tips (17a and Bsa) formed into spherical surfaces. The spherical tips (17a) and (18a) are biased by coil springs aJ so as to protrude outward, respectively, and the rear ends are provided with holes (14a) and (15a) in slide plate 2 and aJ, respectively. Large diameter 7 run section (17
b) and (18b) are formed to prevent slippage in the outward direction.

In addition, first guide rails (5
) and the second guide rail (9) to prevent play when inserted into the guide pieces f2GIl■ and (2112
1) is fitted.

And this connecting member (one slide plate 04 of 131)
is inserted into the first guide rail (5) from the rear end (5b) side, and the other slide plate a9 is inserted into the second guide rail (9) K from its lower end (9b) side. The first guide rail (5) and the second guide rail (ql) are connected to each other so as to be slidable in the longitudinal direction, and the first and second engaging members αη and α& are connected to each other by coil springs. (The biasing force of I9 causes the first guide rail (5
) and the locking hole (IGK) of the second guide rail (9), the first guide rail (5) and the second guide rail (9) are locked by engaging with each other. As a result, the headrest main body (4) is fixed to the support frame (31) of the seat back (2) so as not to be movable in any direction.

Although only one side of the headrest device is shown in the configuration of the drawings, the other side is also configured symmetrically thereto.

Next, the operation of the headrest device 11L of the present invention configured as described above will be explained.

Now, the first engaging member aη of the connecting member f131 is engaged with the rear retaining hole (6b) of the first guide rail (5), and the second engaging member α& is engaged with the rear retaining hole (6b) of the first guide rail (5). (9) Lower retaining hole 110b) When in the engaged state, the headrest body (4) is at the forwardmost position and the lowest position with respect to the support frame +31 (3) of the notebook back (2). (see Figure 5A).

First, when moving the headrest body (4) rearward, from this state, apply the required force directly to the headrest body (4) in the rear direction, and the connecting member (131) is moved in the front-back direction by the second slide rail (9). As a result, the first engaging member αη is immovable due to its distal spherical surface portion (17a) being pressed by the edge of the engaging hole (6b), and the coil resists the biasing force of the coil aJ. The first guide rail (5) moves inward and comes out of the retaining hole (6b), thereby releasing the locked state, and the first guide rail (5) becomes slidable relative to the slide plate I, that is, the connecting member αJ. Therefore, the headrest body (4) is movable with respect to the support frame (31 (31).
), the first engaging member αn engages with the next-stage retaining hole, that is, the front engaging hole (6a) by the biasing force of the coil spring aJ, and the headrest body (4 ) is locked again in this position, rearwardly relative to the support frame (31 (see FIG. 5B).

In addition, when adjusting the headrest body (4) in the opposite direction, that is, from the rear position to the front position, by applying the required force in the forward direction to the headrest body (4), it will move backward by the same action as above. A moving operation will be performed.

Next, when moving the headrest main body (4) upward, apply a required force directly upward to the headrest main body (4) from the state shown in FIG. ), and as a result, the second engaging member α& moves inward against the biasing force of the coil spring αa and comes off the retaining hole (10b), so that the slide plate 05) moves with the second engaging member α&. The headrest body (4) can slide freely within the guide rail (9), and therefore the headrest body (4) is attached to the support frame (
3) It becomes movable. In this state, when an upward force is further applied to the headrest main body (4), the second engagement member (
+81 is engaged by a coil spring (1!J biasing force,
The headrest body (4) is in this position, that is, the support frame +
31 +31 and is locked again in the upper position (see Figure 5C).

In addition, when moving the headrest body (4) in the opposite direction to the above, that is, from the upper position to the lower position, the movement is performed by the same action as above by applying the required downward force to the headrest body (4). Wash.

In addition, it is of course possible to adjust the movement in the front and rear directions at the upper position of the headrest body (4) as described above (see Figure 5). 2) Support frame +31
+31, the adjustment can be made to the most appropriate position by freely moving it in the front-rear direction and up-down direction.

As described above, according to the headrest device of this example, it is possible to adjust the movement to any position in the longitudinal direction and the vertical direction by simply applying the necessary force directly to the headrest main body (4), and the first guide rail The engagement of the first engagement member (171) with the engagement hole (6) K of (5) is released against the biasing force of the coil spring α9 when a required force is applied, that is, when a certain load is exceeded. Since the headrest body (4) is automatically unlocked and moved rearward when an excessive load is applied to the head of the seated person due to a collision, etc., the headrest body (4) This also has the effect of reducing damage to the head of the seated person.

In this example, two engagement holes (6) and 00) are formed in both guide rails (5) and (9), respectively, but they can be adjusted depending on the required adjustment stage of the headrest body (4). Of course, this may be added.

Furthermore, the headrest device of the present invention is not limited to the so-called gate-shaped headrest as in this example, but can also be applied to, for example, a so-called headrest-embedded seat. In the case of this headrest embedded seat, the frame that supports the headrest body has a certain thickness, so
The first guide rail and the second guide rail are arranged in the opposite relationship to this example, that is, the first guide rail is placed laterally on the frame side, and the second guide rail is placed on the headrest main body side, crossing this first guide rail. A configuration in which the idle rail is fixed is also possible.

Further, in the configuration of this example, for example, a suppressing plate is slidably disposed on the inner surface of the guide rail, and the sliding operation of this pressing plate moves the engaging member inward to release the lock. A lock release assisting means may also be provided. Furthermore, in other configurations, this example does not limit the present invention, and various embodiments may be adopted without departing from the spirit of the present invention.

[Effects of the invention] The headrest body side of the headrest body of the headrest body is extremely simple to operate by simply applying the required force to the headrest body and displacing it without using any operating members. Since the seat can be freely adjusted in the front-rear and up-down directions, the seated person can adjust the seat to the desired position with one hand while remaining seated.Moreover, no extra member is used to release the lock. The practical effects are significant, such as the ability to reduce the number of parts and reduce costs.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of the main parts of the headrest device of the present invention, FIG. 2 is a perspective view of a seat equipped with the headrest device of the present invention, and FIG. 3 is a perspective view of one side of the headrest device of the present invention. Fig. 4 is an exploded perspective view of Fig. 3, Fig. 5 No. - D
6 is an explanatory diagram of the operation of the headrest device of the present invention, and FIG. 6 is a perspective view of the conventional headrest device. In the figure, (2) is a seat bank, (3) is a support frame,
(4) is the headrest main body, (5) is the first guide rail, (6) is the rice cover as the engagement part, (9) is the guide 9 rail of the housing 2, 00) is the engagement part Engagement hole, (1
31 is a connecting member, (17) and (IQ are engaging members).

Claims (1)

[Claims] A headrest device in which a headrest main body is supported at both side surfaces of left and right support frames extending upward from the sides of a seat back, and a first guide rail is fixed to both side surfaces of the headrest main body. , a second guide rail is fixed to the support frame so as to intersect with the first guide rail, and a plurality of engaging portions are formed on each of the first and second guide rails at appropriate intervals in the longitudinal direction. At the same time, a connecting member including an engaging member that is removably engaged with the corresponding engaging portion is movably interposed between the first guide rail and the second guide rail. A headrest device characterized in that the headrest main body can be adjusted to move vertically and longitudinally with respect to the support frame via the connecting member.