KR200417425Y1 - Apparatus for moving straight line of headrest - Google Patents

Abstract

The present invention relates to a front and rear direction linear movement device of the vehicle headrest, the occupant is the most comfortable seating state in consideration of their body shape by the headrest (1) capable of height adjustment in the vertical direction and position in the front and rear directions Not only can maintain, but also to prevent head injuries caused by the headrest (1) in the event of a collision and collision accident.

Description

Apparatus for moving straight line of headrest

1 is a schematic diagram for explaining a conventional headrest,

2 to 4 is an exploded perspective view and a perspective view of the coupled state of the headrest linear movement device according to the present invention,

5 is a partial cross-sectional view taken along line II of FIG. 4;

6 and 7 are a perspective view and a side view of the lower bracket according to the present invention,

8 is a perspective view of the upper bracket according to the present invention,

9 and 10 are perspective views of the pole member and the second elastic member according to the present invention,

11 to 13 are views for explaining the operation of the headrest linear movement device according to the present invention.

<Description of Symbols for Main Parts of Drawings>

1-Headrest 5-Headrest Stay

10-Lower Bracket 11-Ratchet Groove

12-Front stopper protrusion 13-Rear stopper protrusion

14-Rod Hole 15-Rear Jam Bar

20-Guide means 30-Upper bracket

40-Holder bracket 60-Pole member

70-First elastic member 80-Second elastic member

The present invention relates to a device for linearly moving the vehicle headrest in the front and rear directions of the vehicle body.

In general, the headrest provided in the vehicle is a component that prevents neck injuries by supporting the occipital head of the occupant to provide a comfortable ride while preventing the occupant's head from flipping back in the event of a collision or collision.

As shown in FIG. 1, the headrest 1 is coupled to the headrest stay 5 protruding to the top of the backrest 3 so that the headrest stay 1 lifts up and down relative to the backrest 3. It is configured to be able to adjust the height as it moves downward, and is also configured to be able to adjust the angle as it is hinged to the headrest stay (5) is rotated in the front and rear direction of the vehicle body.

Therefore, the occupant can maintain the most comfortable seating state by adjusting the height and the front and rear angles according to their body shape.

On the other hand, the headrest 1 as described above is in a state of having the largest contact area with the occipital head of the occupant when standing almost vertically (state of the left figure in FIG. 1), and the state at this time most effectively protects the occupant's head. I can do it.

However, when the occupant rotates the headrest 1 according to his or her body shape and adjusts the front and rear angle, the contact area with the occipital occipital head gradually decreases (state of the right figure in FIG. 1), and in such a state, When a collision occurs, only a narrow portion of the occipital head of the occupant who contacts the headrest 1 receives a concentrated load, whereby the occupant may be injured in the head.

The above problem occurs because the headrest 1 has a configuration in which the headrest stays 5 rotate in the front-back direction of the vehicle body.

The present invention has been devised to solve the above problems, the headrest has a configuration that can be moved linearly in the front and rear direction of the car body relative to the headrest stay, the position of the headrest to fit the passenger's body shape It is an object of the present invention to provide an apparatus for linearly moving the front and rear headrests of a vehicle headrest that can prevent the head injury of the occupant as much as possible by maintaining the optimum contact area with the occipital occipital head, even when adjusting.

Headrest front and rear linear movement device of the present invention for achieving the above object, a plurality of ratchet grooves in the front and rear direction of the vehicle body continuously on the upper surface of one end of both ends bent upward while being fixedly installed on the headrest stay The lower bracket is formed, and both ends are bent downward to correspond to the lower bracket, and the upper bracket is coupled to the lower bracket and the guide means so that the lower bracket is slidably moved in the front and rear directions of the vehicle body with respect to the lower bracket. The holder bracket is coupled to the upper bracket and the head rest cushion is covered, and one end is rotatably coupled to one side of the upper bracket via a hinge pin, and is formed to protrude downward between one end and the other end to move the upper bracket. Along the teeth of the upper bracket, A pole member having a locking protrusion to restrain the first and second ends of the pole member and the upper bracket 30, respectively, fixedly coupled to impart an elastic restoring force to the movement of the upper bracket, and the pole member. One end is coupled to the other end of the upper bracket is characterized in that consisting of a second elastic member for imparting a resilient restoring force to the rotation of the pole member.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 to 4 is an exploded perspective view and a perspective view of the coupled state of the headrest linear transfer device according to the present invention, Figure 5 is a partial cross-sectional view of the line I-I of Figure 4, with the same reference numerals to the same parts as the conventional structure. Let's explain.

The present invention relates to a device that can move the headrest in the front and rear direction of the vehicle body according to its body shape so that the occupant can maintain the most comfortable seating state, the configuration is as shown in Figures 1 to 10.

That is, in the front and rear linear movement device of the headrest according to the present invention, a plurality of ratchet grooves 11 in the front and rear direction of the vehicle body on the upper surface of one end of both ends bent upward while being fixedly installed on the headrest stay (5) The lower bracket 10 is continuously formed, and both ends are bent downward to correspond to the lower bracket 10 to be coupled to the lower bracket 10 while being coupled to the lower bracket 10 and the guide means 20. The upper bracket 30 which is installed to be slidably moved in the front and rear directions of the vehicle body, the holder bracket 40 which is combined with the upper bracket 30 and is covered with a headrest cushion, and one end of the upper bracket 30 A pawl member (60) coupled to one side by a hinge pin (51) so as to be rotatable, and the other end of which is formed to selectively engage with the ratchet groove (11); The lower lobe Both ends are fixedly coupled to the bracket 10 and the upper bracket 30, respectively, to the first elastic member 70 and one end of the pole member 60 to impart an elastic restoring force to the movement of the upper bracket 30. Is coupled and is coupled to the other end of the upper bracket 30 is composed of a second elastic member 80 to give a resilient restoring force to the rotation of the pole member 60.

Here, the ratchet groove 11 formed in the lower bracket 10 has a configuration in which a plurality of inclined surfaces 11a and vertical surfaces 11b formed to have a slope gradually rising toward the front from the rear of the vehicle body are continuously formed. to be.

The front end and the rear end of the ratchet groove 11 have a front stopper protrusion 12 and a rear stopper which prevent the detachment of the pole member 60 from the lower bracket 10 when the upper bracket 30 moves. The protrusion 13 extends upward and protrudes.

On the other hand, the front stopper protrusion 12 protrudes upwards higher than the ratchet groove 11, and the rear stopper protrusion 13 protrudes higher than the front stopper protrusion 12.

That is, the height H3 up to the top end of the front stopper protrusion 12 is higher than the height H2 up to the top end of the ratchet groove 11 based on the bottom surface of the lower bracket 10. It is formed so as to come, and the height (H4) to the top end of the rear stopper protrusion 13 is formed to a higher position than the height (H3) of the front stopper projection (12).

The guide means 20 includes a plurality of rod holes 14 formed so as to penetrate both sides of the lower bracket 10 in a straight line, and an upper bracket 30 overlapping the rod holes 14. Guide holes 31 formed by cutting in the front-rear direction of the vehicle body on both sides, and guide grooves 21a guided by the guide holes 31 when the upper bracket 30 moves while being inserted into the guide holes 31 are outside. A guide for engaging the lower bracket 10 and the upper bracket 30 by sequentially passing through the roller member 21 formed along the circumferential surface of the side, and through the center of the roller member 21 and the rod hole 14. It consists of a rod 25.

In addition, the pawl member 60 has a latching protrusion 61 that selectively engages with the ratchet groove 11 as the upper bracket 30 moves between one end and the other end to which the hinge pin 51 is coupled. Protruding downward from the bottom facing the ratchet groove (11).

The locking projection 61 is configured in such a manner that the inclined surface 61a and the vertical surface 61b having a slope gradually rising toward the other end from one end of the hinge pin 51 are continuously connected.

In addition, the first elastic member 70 is installed by being hooked to the rear catching bar 15 formed at one end thereof in the same direction as the direction in which the guide rod 25 is coupled at the rear surface of the lower bracket 10. On the other side of the upper bracket 30, the other end is mounted on the front locking bar 32 coupled in the same direction as the direction in which the guide rod 25 is coupled.

The first elastic member 70 is characterized in that the upper spring 30 is a tension spring that provides an elastic force to be given a force to return to the rear of the vehicle body.

And. The second elastic member 80 is bent at both ends of the elastic force providing portion 81 and the elastic force providing portion 81 is formed in a circular arc shape, the upper bracket 30 and the pole member 60 It consists of fitting ends (82, 83) are fitted into the spring holes (33, 62) formed in the coupling.

The second elastic member 80 provides elastic force to the pawl member 60 in a direction in which the engaging protrusion 61 is engaged with the ratchet groove 11.

Meanwhile, reference numeral 23 denotes a nut member fastened to the tip of the guide rod 25, reference numeral 34 denotes a hole formed in the upper bracket 30 so that the hinge pin 51 can penetrate, and reference numeral 53 Is a washer member fitted to the hinge pin 51 and installed between the upper bracket 30.

In addition, reference numeral 63 is a hole formed in one end of the pole member 60 so that the hinge pin 51 can penetrate, and reference numeral 55 is a nut member fastened to the tip of the hinge pin 51.

Hereinafter, the operation and effects of the embodiment according to the present invention will be described.

First, the headrest stay 5 is coupled to the structure of lifting up and down relative to the backrest (3) as before, accordingly, the headrest (1) is capable of height adjustment.

5 illustrates a state in which the upper bracket 30 is moved backward and fixed by the pole member 60.

At this time, the tip of the pawl member 60 is inserted into the position where the inclined surface 11a and the rear stopper protrusion 13 of the ratchet groove 11 meet, as shown in Figure 11, the locking projection of the pawl member 60 61 maintains the vertical surface 61b in contact with the vertical surface 11b of the ratchet groove 11.

Therefore, the upper bracket 30 can be moved to the rear of the vehicle body as much as possible by the locking action of the pawl member 60 and the ratchet groove 11 to maintain a fixed state.

In the above state, when the upper bracket 30 is moved toward the front of the vehicle body, the pawl member 60 as the inclined surface 61a of the catching protrusion 61 moves up the inclined surface 11a of the ratchet groove 11. ) Rotates counterclockwise in the state shown in FIG. 11 with respect to the hinge pin 51.

The counterclockwise rotation of the pawl member 60 is maximized at the vertex where the tip end of the pawl member 60 meets the inclined surface 11a of the ratchet groove 11 and the vertical surface 11b, wherein the second The elastic member 80 is compressed to the maximum, and the first elastic member 70 has a restoring force while being slightly extended than the initial length.

Subsequently, the upper bracket 30 moves toward the front of the vehicle body so that the end of the pole member 60 passes through the vertex where the inclined surface 11a and the vertical surface 11b of the ratchet groove 11 meet, and the ratchet groove is located next. When it comes in contact with the vertical surface 11b of the (11), the pole member 60 is rotated in the clockwise direction by the restoring force of the second elastic member 80, thereby the vertical surface of the locking projection (61) ( 61b) comes into contact with the vertical surface 11b of the ratchet groove 11 located next.

As a result, the upper bracket 30 moved one compartment toward the front of the vehicle body can not be retracted by the locking action of the pawl member 60, so that the moved state can be continuously maintained.

FIG. 12 illustrates a state in which the upper bracket 30 is moved to the front of the vehicle body as much as possible by the above operation and is fixed.

At this time, the upper bracket 30 is not retracted by the locking action of the pawl member 60, but can move to the front side of the vehicle body.

In addition, the first elastic member 70 has a greater restoring force as the entire length of the first elastic member 70 is extended.

Meanwhile, FIG. 13 illustrates a process in which the upper bracket 30 moved toward the front of the vehicle body retreats to return to its original position.

That is, when the upper bracket 30 is further moved toward the front of the vehicle body in the state of FIG. 12, as the tip of the pawl member 60 moves up the inclined surface of the front stopper protrusion 12, the pawl member 60 is moved. The hinge pin 51 is rotated in a counterclockwise direction in the illustrated state, and the second elastic member 80 is compressed to the maximum and the first elastic member 70 is maintained to the maximum extended state. Done.

In such a state, when the force applied to the upper bracket 30 is removed, the upper bracket 30 moving toward the front of the vehicle body retreats by the restoring force of the first elastic member 70, as shown in FIG. 5. The pole member 60, which was returned to the original state and rotated counterclockwise at the same time, was rotated again clockwise by the restoring force of the second elastic member 80 to return to the original state as shown in FIG. You are ready for the next action.

Therefore, the headrest 1 having the linear movement device in the front and rear direction as in the present invention can be adjusted not only in the vertical direction of the vehicle body through the headrest stay 5 but also in the front and rear directions, thereby allowing passengers. Taking into account their body shape will be able to maintain the most comfortable sitting state.

That is, the headrest (1) is in a state where the headrest (1) has the largest contact area with the occipital head of the occupant (the state in the figure on the left in FIG. 1) and most effectively protects the occupant's head. In the embodiment of the headrest (1) as described above can be maintained at all times, the occupant will be able to maintain the most comfortable seating state in consideration of their body shape.

In addition, the present invention can prevent the phenomenon of receiving a concentrated load on only one part of the occipital head of the occupant by the headrest (1) in the event of a collision and collision accident, it can also have the advantage of preventing the head injury of the occupant as much as possible Will be.

As described above, according to the present invention, the headrest capable of adjusting the height in the vertical direction and the position in the front-back direction enables the occupant not only to maintain the most comfortable seating state in consideration of his / her body shape, but also to collide with the collision In the event of an accident, there is an effect that can prevent head injuries caused by the headrest.

Claims (6)

The lower bracket 10 and the lower bracket 10 in which a plurality of ratchet grooves 11 are continuously formed in the front and rear direction of the vehicle body on the upper surface of one end of the two ends bent upward while being fixedly installed on the headrest stay 5. Both ends are bent downward to correspond to the upper bracket 10 is coupled to the lower bracket 10 and the guide means 20 while being slidably installed in the front and rear directions of the vehicle body with respect to the lower bracket 10. ), The holder bracket 40 which is combined with the upper bracket 30 and the headrest cushion is covered, and one end is rotatably coupled to one side of the upper bracket 30 via a hinge pin 51. Protruding downwardly between one end and the other end is provided with a locking projection (61) for restraining the movement of the upper bracket 30 to form a selective engagement with the ratchet groove (11) in accordance with the movement of the upper bracket (30). Polbu 60 and the first elastic member 70 fixedly coupled to the lower bracket 10 and the upper bracket 30 to impart an elastic restoring force to the movement of the upper bracket 30. One end is coupled to the pole member (60) and the other end is coupled to the upper bracket (30) and is composed of a second elastic member (80) for imparting elastic restoring force to the rotation of the pole member (60); The guide means 20 includes a plurality of rod holes 14 formed so as to penetrate both sides of the lower bracket 10 in a straight line, and both side surfaces of the upper bracket 30 overlapping the rod holes 14. The guide hole 31 formed by cutting in the front-rear direction of the vehicle body and the guide groove 21a which is inserted into the guide hole 31 and guides the movement of the guide hole 31 when the upper bracket 30 moves are located on the outer side. A guide rod for coupling the lower bracket 10 and the upper bracket 30 by sequentially passing through the roller member 21 formed along the circumferential surface, the center of the roller member 21, and the rod hole 14; 25); At the front end and the rear end of the ratchet groove 11, the front stopper protrusion 12 and the rear stopper protrusion (12) to prevent the fall of the pole member 60 from the lower bracket 10 during the movement of the upper bracket 30 ( Front and rear linear movement device of the vehicle headrest, characterized in that 13) is protruded upwardly formed. The method of claim 1, wherein the ratchet groove 11 is characterized in that the inclined surface 11a and the vertical surface (11b) formed to have a slope that gradually rises from the rear of the vehicle body toward the front is formed in succession. Front and rear linear movement device of vehicle headrest. According to claim 1, wherein the front stopper projection 12 is projected upwards higher than the ratchet groove 11, the rear stopper projection 13 is projected upwards higher than the front stopper projection (12). Front and rear linear movement device of the vehicle headrest characterized in that formed. The method of claim 1, wherein the locking projection 61 provided in the pawl member 60, The front and rear linear movement device of the headrest for a vehicle, characterized in that consisting of an inclined surface (61a) and a vertical surface (61b) having a slope that gradually rises toward the other end from one end of the hinge pin (51). The method of claim 1, wherein the first elastic member 70, In the same direction as the direction in which the guide rod 25 is coupled to the rear surface of the lower bracket 10 and the front surface of the upper bracket 30 so that the upper bracket 30 receives a force to return to the rear side of the vehicle body. The front and rear linear movement device of the headrest for a vehicle, characterized in that both ends are fitted to the rear locking bar 15 and the front locking bar 32 provided. The method of claim 1, wherein the second elastic member 80, An elastic force providing part 81 formed in an arc shape; Consists of fitting ends (82, 83) are bent at both ends of the elastic force providing portion 81 and fitted into the spring holes (33, 62) formed in the upper bracket (30) and the pole member (60). ; The front and rear linear movement device of the headrest for a vehicle, characterized in that for providing the elastic force to the pawl member 60 in the direction in which the engaging projection 61 is engaged with the ratchet groove (11).

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