KR101593048B1 - Horizontal moving apparatus of headrest - Google Patents

Abstract

The present invention relates to a horizontal moving apparatus for a headrest, which can increase safety of a passenger in case of a collision, user comfort, and ease by adjusting the position of a headrest in a front and back direction. The horizontal moving apparatus for a headrest comprises: a housing wherein a space portion is formed; a multi-stage braking unit installed in the space portion, wherein a plurality of protrusions are formed to protrude upwardly in a front and back direction; a metal latch installed to move and slide in a front and back direction in an upper portion of the multi-stage braking unit, wherein a protruding unit correspondingly coupled to the protrusions protrudes from one side of a lower end; and an elastic member restoring the metal latch to an original position.

Description

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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest horizontal moving apparatus capable of adjusting the position of a headrest in a longitudinal direction so as to improve the safety of a passenger at the time of a collision and the comfort and convenience of a normal user.

Generally, a headrest installed on an upper portion of a car seat is designed to raise the comfort of a passenger while supporting the head of a passenger and to reduce the risk of injury in case of an accident. The head height varies according to the posture or body structure of a passenger. Recently, a device for adjusting the position by moving the headrest in the horizontal direction in consideration of the seating position of the occupant has been developed.

FIG. 1 shows an example of a conventional headrest horizontal moving apparatus. In FIG. 1, a plurality of gear teeth in a U-shape and welded to a horizontal bar 102 of a stay rod 101 coupled to a seat, (105) and a connecting link (106) respectively coupled to the front and rear ends of the fixed gear portion (103) so as to be rotatable in the forward and backward directions, and a fixed gear portion A rotary gear unit 107 rotatably coupled to the link 106 to be engaged with the gear teeth 104 of the fixed gear unit 103 and coupled to an upper end of the rotary shaft 105 and the connection link 106 And a return spring 109 for returning the connecting link 106 to the original position.

However, such a conventional headrest horizontal movement apparatus 110 has a complicated shape and structure, and is difficult to process. Therefore, there is a problem that high accuracy is required due to limitations of gear teeth and connection link structure. These are the causes of the rise.

KR 10-2012-0083979 A (July 27, 2012 open) KR 10-2014-0052813 A (2014.05.07 open)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a headrest horizontal moving device capable of moving the headrest in the forward and backward directions and improving the safety, .

Another object of the present invention is to provide a headrest horizontal moving apparatus which can reduce the manufacturing cost by a simple structure and can satisfy a requirement of the user regarding the horizontal position adjustment of the headrest.

The above-described object of the present invention can be achieved by providing a semiconductor device comprising: a housing in which a space portion is formed; A multi-stage tilting unit installed in the space and having a plurality of engagement protrusions protruding upward in the forward and backward directions; An engaging portion provided on an upper portion of the multi-step braking portion so as to be slidable in the forward and backward directions and protruding from a lower end of the engaging portion corresponding to the engaging jaw; And an elastic member for restoring the latch to the original position.

According to a preferred aspect of the present invention, a guide groove is formed in a longitudinal direction on one side of the housing, and a guide bar slidable along the guide groove can be coupled to the upper end of the latch.

According to another preferred aspect of the present invention, a fixing bar passing through the housing is coupled to the rear of the guide groove, and one end of the elastic member is coupled to one side of the fixing bar and the other end is coupled to one side of the guide bar. have.

According to another preferred aspect of the present invention, a stop releasing bar for releasing the latching portion of the latch from the latching jaw of the multistage breaking portion can be coupled through the housing in front of the latch.

According to another preferred aspect of the present invention, a restoration guide panel having a restoring guide groove formed in an anteroposterior direction may be provided on an upper portion of the latch.

According to another preferred aspect of the present invention, the restoration guide groove includes a first restoration guide groove extending rearward from a front end of the restoration guide panel, and a second restoration guide groove extending from the rear end of the first restoration guide groove, And a restoration guide groove.

According to another preferred aspect of the present invention, a restoration guide pin is bent at one side of the latch, and one end of the restoration guide pin can be supported at the edge of the first restoration guide groove when restoring the key.

According to the headrest horizontal moving apparatus according to the present invention, malfunction is prevented, operation reliability is improved, and maintenance cost is reduced compared with the conventional structure.

Further, according to the headrest horizontal moving apparatus according to the present invention, the structure is simple, and the manufacturing cost and the weight reduction effect are obtained.

1 is a schematic view of a conventional headrest horizontal movement device.
FIG. 2 is a perspective view of a headrest horizontal moving apparatus according to an embodiment of the present invention; FIG.
3 is an exploded perspective view of Fig.
4 is a cross-sectional view of a headrest horizontal moving apparatus according to an embodiment of the present invention.
5 to 7 are operational states of a headrest horizontal moving apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the embodiments described below are only for explanation of the embodiments of the present invention so that those skilled in the art can easily carry out the invention, It does not mean anything. In describing various embodiments of the present invention, the same reference numerals are used for components having the same technical characteristics.

Example

FIG. 2 is a perspective view of a headrest horizontal moving apparatus according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of FIG. 2, and FIG. 4 is a sectional view of a headrest horizontal moving apparatus according to an embodiment of the present invention.

2 to 4, a headrest horizontal movement apparatus 10 according to an embodiment of the present invention includes a housing 200 having a space portion formed therein, An elastic member 500 for elastically biasing the latch 400 in a rearward direction and a latch member 400 for latching the latch 400 in a forward and rearward direction, .

A plurality of latching jaws 311 are formed in the forward and rearward directions and a latching part 420 which is hung on the latching jaws 311 of the multi-stage shaking part 300 at the lower end of the latching part 400 .

At this time, the latch 400 can move forward while riding on the latching jaw 311 of the multi-stage braking unit 300. However, when the latch 400 moves backward along the latching jaw 311, 311) and can not move.

The headrest is moved forward by the forward movement of the latch 400. At this time, the position of the headrest is fixed by the latching portion 420 of the latch 400 being engaged with the latching jaws (not shown) of the multi- 311).

The elastic member 500 provides an elastic force in the direction of returning the latch 400 to the original position and when the latching portion 420 is released from the latching jaw 311 by the rotation of the latch 400, So that the head rest is returned to the original position together with the catch 400.

The housing 200 is formed of a bending plate having a space portion formed therein and having a front side, a rear side and an upper side opened and having a U-shaped cross-sectional shape. The bottom plate 210 and the bottom plate 210, (Not shown).

A guide groove 230 for guiding the movement direction of the latch 400 along the longitudinal direction of the side wall 220 is formed at the upper end of the side wall 220 of the housing 200.

At this time, an inclined groove 231 inclining upwards at a predetermined angle is formed on the front end of the guide groove 230. A first through hole 240 is formed in the lower portion of the front end of the guide groove 230 so as to engage with a later described release bar 800. A fixing bar 700 The second through hole 250 is formed to penetrate.

The multi-step bending portion 300 is installed at the lower end of the space portion inside the housing 200 to determine the forward movement distance of the brace 400 and restrain the backward movement of the brace 400. [

The multi-step bending portion 300 according to an embodiment of the present invention includes a support portion 310 coupled to an upper side of the bottom plate 210 of the housing 200 and extending in the forward and backward direction, And an extension 320 formed to extend.

At this time, on the upper side of the support part 310, a plurality of engagement protrusions 311 protrude upwards along the longitudinal direction of the support part 310. Each of the engagement protrusions 311 has a slope angle of the front end and a slope angle of the rear end, And forms a gentle saw tooth shape.

The extension portion 320 is a portion where the rear end of the latch 400 is supported in the initial state and therefore the front end of the extension portion 320 is concave so as to correspond to the rear end shape of the latch 400.

The latch 400 is slidably mounted on the support 310 of the multi-stage braking unit 300. More specifically, the guide bar 600 is coupled through the guide groove 230 of the side walls 220 of the housing 200, and the guide bar 600 passes through one side of the upper end of the latch 400.

That is, one side of the upper end of the latch 400 is rotatably coupled to the guide bar 600 in the space of the housing 200, so that when the guide bar 600 slides along the guide groove 230, So that the cuff 400 is moved together with the bar 600.

The bracket 400 according to an embodiment of the present invention includes a circular head portion 410 through which the guide bar 600 is inserted and which is sloped rearward at one side of the lower end of the head portion 410, And a protrusion 430 protruded forward from the front end of the locking part 420. The protrusion 430 protrudes forward from the front end of the locking part 420. [

At this time, the rear end of the locking part 420 forms a convex curved surface, and the inclination angle of the rear end is formed to be larger than the inclination angle of the front end so as to correspond to the shape of the catching step 311 described above. Further, it is preferable that the width of the latching part 420 becomes narrower toward the lower end, and the lower end of the latching part 420 be rounded.

The upper surface of the protrusion 430 is preferably rounded concave to the upper side of the front end of the locking part 420 so as to correspond to the outer circumferential surface of the release release bar 800 described later, 400 so as not to be caught by the catching jaws 311 during movement and rotation.

A restoration guide pin 440 is bent outward at one side of the latching part 420 of the latch 400. The restoration guide pin 440 supports the latch 400 so that the latching portion 420 of the latch 400 is not caught by the latching jaw 311 of the multistage breaking portion 300 when the latch 400 returns to the home position It plays a role.

The restoration guide pin 440 according to an embodiment of the present invention includes a coupling portion 441 having one end coupled to one side of the coupling portion 420 and the other end projecting to the outside of the coupling portion 420, And a bent portion 443 bent toward the outside of the latch 400 at an end of the slant portion 442. The bent portion 443 extends from the other end of the slanted portion 442 toward the rear end of the slanted portion 442,

The elastic member (500) elastically biases the latch (400) backward. That is, it provides an elastic force for restoring the latch 400 to the original position when the latch 400 is moved forward.

According to an embodiment of the present invention, the fixing bar 700 is inserted into the second through hole 250 at the rear of the guide groove 230 and both ends of the fixing bar 700 are coupled to the side wall 220 of the housing 200 . One end of the elastic member 500 is coupled to one end of the fixing bar 700 and the other end of the elastic member 500 is coupled to one end of the guide bar 600 protruding outside the guide groove 230.

As an example, the elastic member 500 may be formed of a coil spring as shown in the drawing. At this time, when the guide bar 600 is slid forward along the guide groove 230 together with the latch 400, the coil spring is stretched and the guide bar 600 is elastically supported in the direction of the fixing bar 700 .

The engaging portion 420 at the lower end of the latch 400 is engaged with the engaging jaw of the multi-stage disengaging portion 300, even though the elastic force of the elastic member 500 acts on the guide bar 600 when the latch 400 is moved forward The latch 400 is not returned to the home position as long as it is hooked.

The retention part 420 of the latch 400 must be detached from the retaining step 311 of the multi-step bending part 300 in order to return the latch 400 to the original position, Bar 800 is installed.

The latch release bar 800 is inserted into the first through holes 240 of the side walls 220 of the housing 200 and is engaged with the protrusions 430 on the front end of the latch 400 when the latch 400 is moved forward The release bar 800 is caught. The guide bar 600 is moved upwardly inclined along the inclined groove 231 at the front end of the guide groove 230 and the bracket 400 is moved upwards along the inclined groove 231 of the guide groove 230, Is caught by the retaining bar 800 and rotates about the guide bar 600. At this time, the rotation of the latch 400 causes the latching portion 420 at the lower end of the latch 400 to move upward from the latching jaw 311 of the multi-

Here, in order for the latch 400 to smoothly move backward by the elastic force of the elastic member 500, the state in which the latch 420 is released from the latching jaw 311 by the rotation of the latch 400 can be maintained . Further, after the latch 400 returns to the original position, the rearward end of the latching portion 420 should be supported by the extended portion 320 of the multi-stage bending portion 300 again.

To this end, in the headrest horizontal movement apparatus 10 according to the embodiment of the present invention, a restoration guide panel 900 is installed at the upper end of the housing 200.

The restoration guide panel 900 is in the form of a rectangular plate as a whole and is coupled so that both widthwise sides of the restoration guide panel 900 are seated on the upper ends of both side walls 220 of the housing 200. In the restoration guide panel 900, a restoration guide groove 910 is formed to be long in the forward and backward directions.

The restoration guide groove 910 includes a first restoration guide groove 911 extending from the front edge of the restoration guide panel 900 toward the rear edge of the restoration guide panel 900 to a predetermined width, And a second restoration guide groove 912 that is formed to be wider than the first restoration guide groove 911 in the second restoration guide groove 911. [

When the latch 400 is rotated by the latch release bar 800, the restoration guide pin 440 at one side of the latch 400 protrudes to the upper portion of the restoration guide panel 900, and the elastic member 500 The bent portion 443 is supported at the upper side of the rim of the first restoration guide groove 911 when the latch 400 is moved backward.

The bent portion 443 of the restoration guide pin 440 is moved over the frame of the first restoration guide groove 911 while the pendulum 400 moves rearward due to the elastic restoring force of the elastic member 500 So that the latching part 420 at the lower end of the latch 400 moves rearward while maintaining the state of being separated from the latching step 311 of the multi-step bending part 300.

The bent portion 443 of the restoration guide pin 440 enters the second restoring guide groove 912 and loses its supporting force while the bracket 400 moves backward and returns to the original position. The engaging portion 420 is moved downward along the concave surface formed at the front end of the extending portion 320 of the multi- At this time, the latch 400 is rotated downward about the guide bar 600, and the latching part 420 at the lower end of the latch 400 is engaged with the extended part 320 of the multi-

5 to 7 are operational states of a headrest horizontal movement apparatus according to an embodiment of the present invention. Hereinafter, the operation of the headrest horizontal moving apparatus according to an embodiment of the present invention will be described with reference to FIGS. 5 to 7. FIG.

5, when the guide bar 600 or the latch 400 is moved forward, the latching portion 420 at the lower end of the latch 400 pushes the rear end of the latching jaw 311 of the multi- While riding, move forward. At this time, when the forward movement of the guide bar 600 or the latch 400 is stopped, the rear end of the locking part 420 is held in position while being supported at the front end of the locking step 311.

At this time, the guide bar 600 can be coupled to one side of a frame (not shown) inside the headrest (not shown), so that the user can push the headrest directly forward or by actuating the actuator The latch 400 can be moved forward by one step along the longitudinal direction of the eccentric part 300. [

When returning the latch 400 to the home position, the latch 400 is moved to the foremost position as shown in Fig. At this time, the guide bar 600 enters the inclined groove 231 in the front of the guide groove 230, and the protrusion 430 of the bracket 400 is caught by the release bar 800 and rotates upward, 420 are released from the latching jaw 311.

Thereafter, as shown in FIG. 7, the resilient restoring force of the elastic member 500 causes the latch 400 to move backward. The bent portion 443 of the restoration guide pin 440 is supported on the upper edge of the first restoration guide groove 911 of the restoration guide panel 900 so that the downward rotation of the interlocking piece 400 is prevented, 420 can be moved backward without being caught by the latching jaw 311. [

The bent portion 443 of the restoration guide pin 440 is detached from the restoration guide panel 900 through the second restoration guide groove 912 and the bent portion 443 of the restoring guide pin 440 is separated from the restoration guide panel 900, The locking part 420 is rotated downward along the front end surface of the extended part 320 of the multi-step braking part 300 and inserted and inserted into the groove between the extending part 320 and the locking step 311.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

10: Horizontal moving device
200: Housing
230: Guide groove
300: Multistage dies
311:
400: Catch
420:
440: Restoration guide pin
500: elastic member
600: Guide bar
700: Fixed bar
800: Release bar
900: Restoration Guide Panel
910: Restoration Guide Home

Claims (7)

A housing having a space formed therein;
A multi-stage tilting unit installed in the space and having a plurality of engagement protrusions protruding upward in the forward and backward directions;
An engaging portion provided on an upper portion of the multi-step braking portion so as to be slidable in the forward and backward directions and protruding from a lower end of the engaging portion corresponding to the engaging jaw; And
And an elastic member for restoring the latch to its original position,
A detent bar for detaching the latching portion of the latch from the latching jaw of the multistage breaking portion is coupled to the housing through the front of the latch,
And a restoration guide panel having a restoring guide groove extended in the front-rear direction is provided on the upper portion of the latch. The method according to claim 1,
Wherein a guide groove is formed in a longitudinal direction on one side of the housing, and a guide bar slidable along the guide groove is coupled to one end of the upper end of the latch. The method of claim 2,
And a fixing bar passing through the housing is coupled to the rear of the guide groove, wherein one end of the elastic member is coupled to one side of the fixing bar and the other end is coupled to one side of the guide bar. delete delete The method according to claim 1,
Wherein the restoration guide groove includes a first restoration guide groove extending rearward from a front end of the restoration guide panel and a second restoration guide groove having a width extended from a rear end of the first restoration guide groove, Headrest horizontal movement device. The method of claim 6,
Wherein a restoration guide pin is bent at one side of the latch and one end of the restoration guide pin is supported at an edge of the first restoration guide groove when restoring the claw.

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