KR20090118219A - Horizontal moving support of head rest for car seat - Google Patents

Abstract

PURPOSE: A horizontal movement supporting tool of a headrest for a vehicle seat is provided to reduce the manufacturing cost by simplifying the structure and improve the productivity. CONSTITUTION: A horizontal movement supporting tool of a headrest for a vehicle seat comprises a fixed support(110), the first link(120), the second link(130), a movable support(140), a ratchet section(112), a rotary stopper(150), an actuating unit, a main spring(160) and a stopper spring. The fixed support is fixed to a horizontal bar(11) of a stay rod(10) installed in the vehicle seat. The first link is rotatably combined with the front side of the fixed support. The second link is rotatably combined with the rear side of the fixed support. The movable support is combined with upper parts of the first and second links and the inside of the headrest. The ratchet section is arranged in left and right sides of the fixed support. A rotary stopper is rotatably combined with the first and second links. The actuating unit permits or restricts the movement of the movable support.

Description

HORIZONTAL MOVING SUPPORT OF HEAD REST FOR CAR SEAT}

The present invention relates to a support for horizontally supporting the headrest installed in the seat of the vehicle to be movable in more detail, made of a simple structure can increase the productivity during production and reduce the cost, more firmly the headrest It relates to a horizontal movable support of the headrest for automobile seats that can be supported.

The headrest installed on the upper part of the car seat is designed to support the head of the occupant to increase the comfort while driving and reduce the risk of injury in an accident, and may have a structure that is pivoted back and forth to support the head at different angles according to the position of the occupant. do.

Apart from this rotational structure, the horizontal position of the headrest can be moved relative to the seat in recent years, so that the head of the passenger can be supported more stably. For this purpose, horizontal headrests have been developed and used to allow a more comfortable posture.

The support used in the horizontal headrest is fixed in position by pushing the headrest backward by using mainly a link, a ratchet and a spring, and when it is completely pushed backward, the ratchet is released and the headrest is returned to the front again. Made of structure.

However, since the supporting tool used in the conventional horizontally movable headrest has a structure in which separate link members are provided at left and right and front and rear, respectively, the structure is complicated, manufacturing cost is high, productivity is low, and each link member and its connection portion are There was a problem that the deformation caused by the torsion occurs so that the fixing of the headrest is not firm.

In addition, there is a problem that the productivity and cost efficiency is further lowered due to the complicated operation release and return structure through the ratchet.

The present invention is to solve the problems as described above, the object of the present invention is made of a simple structure can reduce the manufacturing cost and improve productivity, and prevents deformation due to the twist of the link member and connecting portion of the headrest It is to provide a horizontal movable support of the headrest for the car seat to be firmly fixed.

According to the present invention for achieving the above object, a fixed support fixed to the horizontal bar of the stay rod is installed on the vehicle seat; A first link rotatably coupled to the front and the front of the fixed support; A second link pivotally coupled to the rear of the fixed support in a forward and backward direction; A movable support coupled to the upper portions of the first link and the second link and moved forward and backward with respect to the fixed support and coupled to the inside of the headrest; Ratchet parts provided on the left and right sides of the fixing support and formed with a plurality of engaging jaw in the form of a sawtooth inclined to one side; A rotation stopper rotatably coupled to the first link or the second link and having a hook portion in contact with the latching jaw of the ratchet portion in an inclined state; Operating means for applying or limiting the movement of the movable supporter by bringing the rotation stopper into close contact or spaced apart from the ratchet in accordance with the direction of external force; A main spring provided to apply a moving force to the movable support toward the rear; There is provided a horizontal movement support of the headrest for a car seat including a stopper spring for elastically supporting the pivoting stopper to be rotated in the direction in which the hook portion is inserted into the locking groove according to the rotational position, or for supporting the pivoting stopper in the opposite direction. .

In the support of the present invention, at least one side of the first link and the second link is formed in the form of a plate disposed between the fixed support and the movable support, the fixed support and the movable support on both sides of the lower and upper, respectively The lower coupling protrusion and the upper coupling protrusion condensed with a sphere may be formed in a bent structure.

The actuating means may include a release protrusion and a return protrusion formed at the front and the rear of the pivot stopper, respectively, and in front of the ratchet part to push the release protrusion according to the direction of movement of the pivot stopper to rotate the hook upward or return. It may be configured to include an operation protrusion for pushing the protrusion to rotate the hook portion downward.

According to the present invention as described above, each of the first link and the second link is made of a plate-like member, the upper coupling protrusion and the lower coupling protrusion provided on both sides condensed on the fixed support and the movable support, respectively By reducing the required parts and simplifying the assembly of each part, the manufacturing cost is reduced and the productivity is improved. The torsional deformation of the link and the connection part is prevented. There is.

In addition, the release stopper and the return protrusion provided on both sides of the rotation stopper are caught by the operation protrusion so that the rotation stopper is rotated to the locking or returning position according to the moving direction of the rotation stopper. The release structure is simple and the operation reliability is improved.

The objects, features and advantages of the present invention described above will become more apparent from the following detailed description. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are perspective views showing an embodiment of the headrest horizontal moving support according to the present invention in an assembled and disassembled state, respectively, and FIGS. 3 to 5 show its operating state. 1 and 2 show what is seen from the back side of the support for better understanding.

As shown, the headrest support of the present invention, the fixed support 110 is coupled to the stay rod 10 is installed to be elevated on the upper portion of the seat, and the front and rear portion of the fixed support 110 The movable first and second links 130 and 130 coupled to the upper portion of the first link 120 and the second link 130, the front portion and the rear portion coupled to move the front and rear in a horizontal state Earth 140, the rotation stopper 150 rotatably coupled to the first link 120, the main spring 160 installed to apply a rear rotational force to the movable support 140, and the rotation It is made of a stopper spring 163 to elastically support the stopper 150, the movable support 140 is coupled to the interior of the headrest (20).

The fixed support 110 has a wide "U" cross-sectional shape with an upward bent portion 118 on both sides, the bottom of which is fixed to the horizontal bar 11 of the stay rod 10 by welding or the like. On the upper surface of the bent portion 118, a ratchet portion 112 having a plurality of locking jaws 113 inclined in one direction is formed.

The first link 120 is formed in the form of a plate placed across the front portion between the fixed support 110 and the movable support 140, the lower coupling is formed with a coupling hole condensed with the fixed support 110 on both lower sides The protrusion 121 is bent backward and provided, and the upper coupling protrusion 123 having a coupling hole condensed with the movable support 140 on both upper sides is bent backward. In addition, at both sides of the intermediate portion, a stopper coupling protrusion 125 having a coupling hole in which the rotation stopper 150 is condensed is provided to be bent backwards.

The second link 130 is formed in the form of a plate placed across the rear portion between the fixed support 110 and the movable support 140, the fixed support 110 and the movable support respectively on both lower and upper sides of the lower The lower coupling protrusion 131 and the upper coupling protrusion 133 having a coupling hole condensed with the 140 are provided to be bent forward.

The rotation stopper 150 is disposed in an inclined state corresponding to the locking jaw 113 of the ratchet part 112 of the fixed support 110, and the locking jaw 113 of the ratchet part 112 at the bottom thereof. Hook portion 151 is formed to be caught is moved along each locking jaw 113 in accordance with the rotation direction of the first link (120) or is provided on the locking jaw 113 to provide a fixed force.

In addition, a release protrusion 153 is provided at the hook portion 151 side of the rotation stopper 150, and a return protrusion 155 is formed at an opposite end thereof, and in front of the ratchet portion 112 of the fixing support 110. The actuating protrusion 115 is formed.

The actuating protrusion 115 pushes the release protrusion 153 of the pivoting stopper 150 so that the hooking portion 151 pivots upward when the movable supporter 140 moves forward by a predetermined distance or more. When the rotation stopper 150 returns to its original position, the return protrusion 155 is pushed to return the hook portion 151 of the rotation stopper 150 to the position in contact with the ratchet part 112.

The main spring 160 has been made of an A-shaped spring inserted into the lower coupling shaft of the second link (130). In this case, the outer end of the main spring 160 is installed to press the first link 120 or the second link 130. In addition to the A-shaped spring shown, the main spring 160 has a variety of forms that provide an actuation force such that the movable support 140 is rotated to the rear, such as a coil spring, an arc spring, and a leaf spring. Can be.

The stopper spring 163 is elastically supported or rotated in the opposite direction so that the hooking portion 151 rotates in a direction in which the hooking portion 151 is in close contact with the locking jaw 113 of the ratchet portion 112 according to the rotational position. Elastic support as much as possible. The stopper spring 163 may also be made of various types such as an A-shaped spring, a coil spring, and a leaf spring in addition to the arc-shaped spring shown.

Referring to the operating state of the present invention configured as described above, as shown in Figure 3 the hook portion 151 of the pivoting stopper 150 is caught in one of the latching jaw 113 of the ratchet portion 112 The headrest 20 maintains its position by the elastic force of the main spring 160.

In this state, when the headrest 20 is pushed forward, as shown in Figure 4, the movable support 140, while the hook portion 151 of the rotation stopper 150 rides over the ratchet portion 112 Is moved forward and releases the pushing force, the hook portion 151 of the rotation stopper 150 is caught by another locking jaw 113 is fixed in a state in which the headrest 20 is moved forward.

When the headrest 20 is fully pushed forward (ie, moved forward by a predetermined limit or more), as shown in FIG. 5, the release protrusion 153 of the rotation stopper 150 is connected to the operation protrusion 115. The hook part 151 is pushed upward to maintain the position by being pushed upward by the elastic support force of the stopper spring 163. Accordingly, the fixed force by the rotation stopper 150 is released, and the movable support 140 is freely movable relative to the fixed support 110. When the force applied to the headrest 20 is released, the main spring is released. When the movable support 140 is moved backward by the 160 and the headrest 20 is moved to the original rear position, the return protrusion 155 of the rotation stopper 150 is pushed by the operation protrusion 115 to the hook. The unit 151 is rotated downward to return to the initial state as shown in FIG.

The headrest support of the present invention as described above, wherein the first link 120 and the second link 130 each consists of a single plate-like member, the upper coupling protrusions (123, 133) and the lower coupling provided on both sides Since the protrusions 121 and 131 are configured to be condensed to the fixed support 110 and the movable support 140, respectively, the required parts are reduced compared to the conventional support having a plurality of bar-shaped link members. And the simple assembly of each part has the advantage of reducing the manufacturing cost and productivity. In addition, since deformation of the support structure due to torsion between a plurality of links coupled separately does not occur, there is an advantage that the support state of the headrest can be always firmly maintained even after long-term use.

In addition, the release stopper 153 and the return protrusion 155 provided on both sides of the rotation stopper 150 are caught by the operation protrusion 115 so that the rotation stopper 150 is caught or caught in the moving direction of the rotation stopper 150. By being rotated to the return position, a complicated peripheral structure is not necessary, and the locking and releasing structure by the rotation stopper 150 is simple and the operation reliability is improved.

Meanwhile, in the above-described embodiment, the rotation stopper 150 is coupled to the first link 120, but in some cases, the rotation stopper 150 may be coupled to the second link 130. .

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

1 and 2 is a rear perspective view showing an embodiment of the horizontal movement support of the headrest for a car seat according to the present invention in an assembled and separated state, respectively.

3 to 5 are side cross-sectional views showing the operating state of the support of the present invention described above.

Claims (3)

A fixed support 110 fixed to the horizontal bar 11 of the stay rod 10 installed on the vehicle seat; A first link 120 rotatably coupled to the front and rear in front of the fixed support 110; A second link 130 pivotally coupled to the rear of the fixed support 110 in a forward and backward direction; A movable support 140 coupled to the upper portions of the first link 120 and the second link 130 and moved forward and backward with respect to the fixed support 110 and coupled to the inside of the headrest 20; A ratchet part 112 provided at both left and right sides of the fixing support 110 and having a plurality of locking jaws 113 in a sawtooth shape inclined to one side; Rotating stopper having a hook portion 151 which is rotatably coupled to the first link 120 or the second link 130 and in contact with the latching jaw 113 of the ratchet portion 112 in an inclined state ( 150); An actuating means for applying or limiting the movement of the movable supporter 140 by bringing the rotation stopper 150 into close contact or spaced apart from the ratchet part 112 according to the direction of external force; A main spring 160 provided to apply a moving force to the movable support 140 toward the rear; An automobile including a stopper spring 163 that elastically supports the pivoting stopper 150 to be rotated in a direction in which the hooking portion 151 is inserted into the locking groove 113 or rotates in the opposite direction according to the rotational position. Horizontal support of headrest for seat. The method of claim 1, At least one side of the first link 120 and the second link 130 is formed in the form of a plate disposed between the fixed support 110 and the movable support 140, the fixed support on each of the lower and upper sides Horizontal moving support of the headrest for the car seat, characterized in that the lower coupling protrusions 121 and 131 and the upper coupling protrusions 123 and 133 condensed with the 110 and the movable support 140 are formed. The method according to claim 1 or 2, The actuating means may be provided at the front and rear of the rotation stopper 150 and the release protrusion 153 and the return protrusion 155, respectively, and the ratchet part 112 is provided in a moving direction of the rotation stopper 150. According to the headrest for a car seat including an operation protrusion 115 for rotating the hook portion 151 upward by pushing the release protrusion 153 or by pushing the return protrusion 155 downward. Horizontal support.

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