KR20080016060A - Rear collision impact relief device of vehicle seat - Google Patents

Abstract

The present invention is to absorb the shock when the vehicle is collided from the rear, to protect the occupant's body, in particular the head, the rear collision impact mitigation system of the vehicle seat including a seat seat, a seat back and a headrest, the headrest Headrest device comprising a frame pole bar and a support plate connected to; A first link device connected to the headrest device and linked to the movement of the headrest to rotate the seatback at a predetermined angle; And a second link device connected to the first link device and linked with the movement of the first link device to lower the seat seat rearward, wherein the headrest is moved upward when the support plate is pressed by the rear collision. The present invention relates to a rear collision shock alleviation system of a moving vehicle seat.

According to the present invention, in the case of rear collision of the vehicle, the seat seat, the seat back and the headrest are alleviated and absorbed by the linkage linkage, and the backset is compensated by the forward rise of the headrest, thereby causing a fatal injury. It can be prevented, the center of gravity is moved down to the rear drop of the seat seat, has the effect of providing a rear collision impact mitigation system of the vehicle seat is significantly improved by the damper.

Description

Rear-end collision impact elevation system for car seats

1 is a state diagram schematically showing the state of the occupant during the rear collision of the vehicle.

Figure 2 is a state diagram schematically showing the concept of the rear collision impact mitigation system of the vehicle seat according to the present invention.

Figure 3a is a side view schematically showing a state before the rear collision of the rear collision impact mitigation system of the vehicle seat according to the present invention.

Figure 3b is a side view schematically showing the state after the rear collision of the rear collision impact mitigation system of the vehicle seat according to the present invention.

Figure 4a is a schematic perspective view of the rear collision impact mitigation system of the vehicle seat according to the present invention.

FIG. 4B is a schematic perspective view of the rear collision impact relief system of the vehicle seat with one side seat and recliner removed in FIG. 4A; FIG.

5 is a use state diagram schematically showing the rotation of the seat back in conjunction with the operation of the headrest in the rear collision impact mitigation system of the vehicle seat according to the present invention.

6 is a view showing the rotation of the seat back linked to the operation of the headrest in the rear collision impact mitigation system of the vehicle seat according to the present invention, Figure 6 (a) is a side view of the state before the rear collision of the vehicle, (b) is a side view of the state after the rear collision of the vehicle.

Figure 7 schematically shows the recliner operating state by the lever in the rear collision impact mitigation system of the vehicle seat according to the present invention, Figure 7 (a) is a state diagram before the recliner operation by the lever, b) is the state after recliner operation by lever.

Figure 8a is a perspective view schematically showing a lower link fixing device in the rear collision impact mitigation system of the vehicle seat according to the invention.

FIG. 8B is a schematic cross-sectional view of the state before the rear collision of the vehicle in the lower link fixing device indicated by A in FIG. 8A;

FIG. 8C is a schematic sectional view of the state after the rear collision of the vehicle in the lower link fixing device indicated by A in FIG. 8A;

Figure 8d is a structural diagram for explaining the slide movement according to the rear collision of the vehicle in the lower link fixing device shown by A in Figure 8a.

* Description of the main parts of the drawings

100: vehicle seat 110: headrest device

111: support plate 112: slit

113: guide plate 114: frame pole bar

120: first link device 121: first wire link

122: rotating member 130: second link device

131: second wire link 132: connecting member

133: fixing member 134: elastic member

135: damper 140: headrest

150: seat back 160: seat

The present invention relates to a rear collision impact mitigation system of a vehicle seat. More specifically, the present invention, when the rear collision of the vehicle by the link structure connected and interlocked with the seat seat, seat back and headrest of the vehicle, the lower link fixing device of the headrest and the seat seat by the wire link movement of the seat back, respectively Interlocked, the headrest is raised to prevent the neck injury, the seat seat is shock-absorbed by the damping mechanism mounted to the lower side and the rear collision impact alleviating system of the vehicle seat is lowered.

In general, if the vehicle is collided from the rear, the occupant is severely injured in the back, spine and neck. More specifically, as shown in Fig. 1, when the vehicle collides from the rear while driving as shown in (A), the back of the occupant is bent backwards while impacting the seat back as shown in (B). . In this case, the occupant is already severely injured at the waist, back, and neck, and then, as shown in (C), the driver reflexively leans forward for the brake operation or by a secondary collision of the vehicle. If the occupant's body is pendulumed forward, he will be fatally injured by crutches.

In order to solve this problem, a recliner device for improving the recliner structure which serves to adjust the angle of the seatback or to give strength when the vehicle collides with the rear, and a backset which is a distance between the driver's neck and the headrest Complementary devices have been developed. However, the backset compensator according to the prior art is to supplement the backset by the operation of the recliner, and converts the impact energy applied to the seatback into kinetic energy through the hinge movement, but the kinetic energy alone does not absorb the impact energy, Efficient neck and head protection of the headrest is not made.

In addition, most of the collision due to collision due to the seat back shock absorption is insufficient, the complex structure has increased the production cost, and has a problem that can not implement accurate and effective head protection by the headrest. In the case of a vehicle rear collision, a case of frequently losing a life due to a pendulum movement of a neck part of a passenger by a chain collision or a driver's brake operation is frequently occurring. Most currently developed neck injury prevention systems have a problem of failing to secure safety against secondary collisions.

Accordingly, the present invention has been proposed to solve the above problems, and an object of the present invention is to relieve and absorb shocks by linking the seat seat, the seat back and the headrest in the rear collision of the vehicle, and the head Complementing the backset with the front rise of the rest, to provide a rear collision impact mitigation system of the vehicle seat that can prevent fatal injuries due to neck injury.

Another object of the present invention is to install a damper to the lower portion of the seat seat, the rear seat of the vehicle seat is lowered when the rear crash of the vehicle, the shock is absorbed, the center of gravity is moved down to improve the safety significantly It is to provide a collision shock mitigation system.

Another object of the present invention is to implement a rear link impact mitigation system of the vehicle seat that can be expected to improve the productivity according to the reduction of the production process and production cost as the link between the recliner and the headrest of the vehicle seat is implemented by a simple link structure It is to provide.

In order to achieve the above object, the present invention provides a rear collision impact alleviation system of a vehicle seat including a seat seat, a seat back and a headrest, the headrest device including a frame pole bar and a support plate connected to the headrest; A first link device connected to the headrest device and linked to the movement of the headrest to rotate the seatback at a predetermined angle; And a second link device connected to the first link device and linked with the movement of the first link device to lower the seat seat backward, wherein the headrest moves forward when the support plate is pressurized by the rear collision. It relates to a rear collision impact mitigation system of the vehicle seat.

Hereinafter, the configuration, function and effects of the preferred embodiment of the rear collision impact mitigation system of the vehicle seat according to the present invention will be described in detail.

Figure 2 is a use state diagram schematically showing the concept of the rear collision impact mitigation system of the vehicle seat according to the present invention. As shown in the figure, when the rear impact impact mitigation system of the vehicle seat according to the present invention is collided from the rear of the vehicle, the seat back is rotated to the rear as shown in B, the seat seats are linked to each of the It is lowered backwards as well, and the headrest is raised forward as shown in A. FIG.

Looking at the process of interlocking when colliding in the rear collision impact mitigation system of the vehicle seat according to the present invention in more detail, Figure 3a is a side view schematically showing a state before the rear collision of the vehicle, Figure 3b is a state after the rear collision of the vehicle A schematic side view. As shown in the figure, the vehicle seat 100 includes a headrest 140, a seatback 150 and a seat seat 160, each of the headrest 140, seatback 150 and seat seat 160. ) Includes a headrest device 110, a first link device 120, and a second link device 130 for connection, linkage, and shock absorption.

The headrest device 110 is mounted to the lower part of the headrest 140 to move and fix the headrest, and the headrest device 110 of the headrest device 110 to pivot the seatback 150 in conjunction with the movement of the headrest. The first link device 120 is connected to the lower portion, and the second link device 130 is connected to the first link device 120 for lowering the seat seat 160 backward in conjunction with the movement of the first link device. Connected.

As such, when the vehicle collides from the rear as shown in FIG. 3B, the occupant impacts the seatback 150 by inertia and the first link device 120 is pressurized to the rear. In addition, the headrest 140 is rotated by being interlocked with the first link device 120 to move forward (arrow direction), and is seated by the second link device 130 interlocked with the first link device 120. The seat 160 descends backwards (arrow direction). In addition, the shock is alleviated by the damper 135 mounted to the lower portion of the seat seat when the seat seat 160 is lowered rearward.

Hereinafter, the detailed configuration of the rear collision impact mitigation system of the vehicle seat according to the present invention and their interlocking relationship will be described in detail.

Figure 4a is a schematic perspective view of the rear collision impact mitigation system of the vehicle seat according to the present invention, Figure 4b is a schematic view of the rear collision impact mitigation system of the vehicle seat is removed one side seat and the recliner in Figure 4a Perspective view.

As shown in the figure, the rear collision impact mitigation system of the vehicle seat according to the present invention is a rear collision impact mitigation system of the vehicle seat including a seat seat, a seatback and a headrest, the headrest device 110, the first link device And a second link device 130.

The headrest device 110 includes a support plate 111, a guide plate 113, and a frame pole bar 114. The frame pole bar 114 is connected to the lower portion of the headrest 14 and is directly connected to the support plate 111. In addition, the support plate 111 is formed with a protrusion 117 to the side, the guide plate 113 is formed with a slit 112 which is a long hole for the guide, the slit is the protrusion 117 is accommodated and guide movement The protrusion 117 is inserted, and when the rear collision of the vehicle, the occupant is formed such that the headrest is advanced relative to the vehicle to compensate for the backset when the support plate 111 is moved by pressing. It is also preferred that the headrest is moved forward to be suitable for protecting the occupant's head.

In addition, the headrest device 110 according to the present invention is further provided with an elastic member 116 for providing a restoring force when the head reddet is moved, the support member 115 for supporting the elastic member 116 Is further provided. The elastic member 116 and the support member 115 are mounted to a predetermined portion of the frame pole bar 114.

The first link device 120 includes a first wire link 121 and a rotation member 122. More specifically, one end of the first wire link 121 is connected to the support plate 111, the other end is connected to the second link device and the rotating member 122. The rotating member 122 is connected to the rotation shaft 153 of the seat back.

The first link device further includes a recliner device for rotating the seatback at a predetermined angle by the lever. When the first link device of the present invention is interlocked by the headrest device, the seatback is rotated at a predetermined angle, and when the recliner is operated by the lever, the seatback is rotated to all the sections. The recliner device by the lever can be easily implemented by those skilled in the art of the present invention.

The first link device further includes an elastic member (not shown) connected to the support plate and the frame of the seat back and providing a restoring force when the seat back is moved.

The second link device 130 includes a second wire link 131 and a lower link fixing device. More specifically, one end of the second wire link 131 is connected to the first wire link 121, and interlocked with the movement of the first wire link 121 to switch the lower link fixing device to the locked and released state. In addition, the second wire link is directly or indirectly connected to the first wire link, when indirectly connected, the first link device further comprises a connecting member 123, the second wire link 131 is It is connected to the connecting member.

8A to 8D, the lower link fixing device includes a connecting member 132, a fixing member 133, an elastic member 134, and a guide member 161. The connecting member 132 is connected to the second wire link 131, the predetermined portion is fixed to the seat seat is mounted so that both ends move in opposite directions to each other. In addition, the fixing member 133 is inserted into or detached from the fixing groove (not shown) formed in the seat seat or the guide member by the forward and backward to be mounted to intervene the movement of the seat seat. In addition, the fixing member 133 further includes an elastic member 134 for providing a restoring force when moving. In addition, the guide member 161 is formed with a slit 162 in a direction in which the seat seat 160 is moved downward backward at a predetermined angle. In addition, the lower link fixing device is not provided with a separate guide member 161, it can be implemented by forming a slit 162 in the seat seat. The lower link fixing device further includes a damper 135 for mitigating an impact when the seat seat is lowered rearward by the rear collision of the vehicle. The damper 135 is for absorbing and mitigating the primary shock applied to the seat by the rear collision of the vehicle, and can be variously implemented as a pneumatic cylinder or a shock absorber by those skilled in the art. .

In addition, the first wire link 121 and the second wire link 131 according to the present invention can be implemented in various ways such as a wire or a cable as a connecting member, is formed in a curve of the seat seat, seat back and headrest The movement or rotation can be implemented more efficiently.

In addition, when the first wire link of the first link device 120 according to the present invention rotates the rotation axis of the seat back to rotate the seat back 150, the seat back is guided to the frame side of the seat back so that the seat back is rotated by a predetermined angle. A slit 152 is formed, and the recliner device is constrained and rotated as shown in FIG.

The recliner system of the vehicle seat according to the present invention is made as described above, and the technical implementation according to the operating state will be described in detail below.

 As shown in Fig. 5, when the vehicle collides from the rear, the vehicle occupant presses and moves the support plate 111 of the seat back by gravity. At this time, the support plate 111 is a protrusion 117 formed in the side is guided and moved to the slit 112 of the guide plate 113, the support plate 111 is headrest by the frame pole bar 114 connected to the upper portion 140 is moved upward (arrow direction). When the headrest 140 moves forward, the elastic member 116 mounted on the frame pole bar 114 is compressed and provides a restoring force.

In addition, the first wire link 121 connected to the guide plate 113 in conjunction with the movement of the guide plate 113 is moved upwards, by rotating the rotating member 122 at a predetermined angle rotation axis 153 of the seat back Is rotated, and the seatback is rotated at a predetermined angle, that is, reclined. In this case, as shown in Fig. 6, the seatback is guided by a slit formed on the side of the seatback, moved to rotate at a predetermined angle, and is limited so as not to rotate at too large an angle. That is, Figure 6 (a) shows a state before the rear collision of the vehicle, Figure 6 (b) shows a state in which the seat back is rotated in conjunction with the headrest device after the rear collision of the vehicle.

Next, the rotation of the seatback will be described in more detail. FIG. 7 schematically illustrates a recliner operation state by a lever in the rear collision impact mitigation system of the vehicle seat according to the present invention. FIG. Fig. 7 (b) is a state diagram after the recliner operation by the lever. As shown in the figure, when the lever 156 is not operated, the fixing member 157 is guided and moved by the guide slit 152 formed in the seat back, and the seat back is rotated at a predetermined angle. Is separated from the guide slit 152 and the seatback is rotated to the full range.

Next, the second wire link 131 is interlocked as the first wire link 121 moves. Hereinafter, referring to FIG. 8, the movement of the second link device and the movement of the seat will be described in detail.

In the lower link fixing device of the second link device before the rear collision of the vehicle, as shown in FIG. 8B, the fixing member 133 is inserted into the fixing groove (not shown) of the seat seat or the guide member, thereby restricting the movement of the seat seat. . However, when the vehicle collides backward, as the first wire link 121 moves upward, as shown in FIG. 8C, the second wire link 131 directly or indirectly connected to the first wire link 121. Moves up (arrow direction). In addition, the connection member 132 is interlocked with the upward movement of the second wire link 131 so that the fixing member 133 is separated from the fixing groove (not shown) of the seat seat or the guide member, and the fixing member is slit. As it is moved along 162, the seat is moved backwards at a predetermined angle. In this case, the seat seat is guided and moved to the guide groove 162 formed in the seat seat or the guide member of the fixing member 133, the shock is alleviated by a damper mounted to the lower side is moved backwards. In addition, when the seat seat is in the original position, the restoring force is provided by the elastic member 134 inserted into the fixing member 133 so that the fixing member is inserted into the fixing groove.

The present invention described above is not limited to the above-described embodiments 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.

As described above, according to the present invention, the seat seat, the seat back and the headrest in the rear collision of the vehicle to mitigate and absorb the impact by linkage by the link structure, and the back set by the front rise of the head restraint, so that the neck By providing a shock absorbing system for rear collision of the vehicle seat that can prevent fatal injuries, and by attaching a damper to the lower portion of the seat, the shock is absorbed when the seat is lowered during the rear collision of the vehicle, the center of gravity As the safety of the vehicle is remarkably improved and the linkage between the recliner and the headrest of the vehicle seat is realized by a simple link structure, the rear collision impact of the vehicle seat that can be expected to improve the productivity by reducing the production process and reducing the production cost. Has the effect of providing a mitigation system.

Claims (12)

A rear crash impact mitigation system for a vehicle seat comprising a seat seat, a seatback and a headrest, A headrest device including a frame pole bar and a support plate connected to the headrest; A first link device connected to the headrest device and linked to the movement of the headrest to rotate the seatback at a predetermined angle; And A second link device connected to the first link device, the second link device lowering a seat seat backward in association with movement of the first link device; When the support plate is moved by the rear collision, the headrest is moved forward Rear collision impact mitigation system of the vehicle seat. The method of claim 1, The headrest device A frame pole bar coupled to the lower portion of the headrest; A support plate connected to the frame pole bar, a protrusion formed at a side thereof, and accommodated in a seat back; And When the protrusion is inserted, the support plate includes a guide plate formed with a slit in the direction in which the headrest is moved forward upward when the pressure plate is moved Rear collision impact mitigation system of the vehicle seat. The method of claim 2, The headrest device An elastic member inserted into the frame pole bar; And Further comprising a support member for supporting the elastic member Rear collision impact mitigation system of the vehicle seat. The method of claim 1, The first link device A first wire link having one end connected to the support plate of the headrest device and the other end connected to the rotation shaft of the seat back; And Rotating member is connected to the rotation axis of the seat back Rear collision impact mitigation system of the vehicle seat. The method of claim 4, wherein The first link device It is connected to the frame of the support plate and the seatback, further comprising an elastic member for providing a restoring force when the seatback is moved Rear collision impact mitigation system of the vehicle seat. The method of claim 1, The second link device A second wire link connected to the first link device; And And a lower link fixing device for controlling the rear downward movement of the seat seat by the movement of the second wire link. Rear collision impact mitigation system of the vehicle seat. The method of claim 4, wherein The second link device A second wire link connected to the first wire link; And And a lower link fixing device for controlling the rear downward movement of the seat seat by the movement of the second wire link. Rear collision impact mitigation system of the vehicle seat. The method according to claim 1 or 7, The second link device It is coupled to the lower portion of the seat seat, further comprising a damper for mitigating the impact of the seat seat movement Rear collision impact mitigation system of the vehicle seat. The method according to claim 6 or 7, The lower link fixing device A connection member connected to the second wire link; A fixing member connected to the connection member and interlocked with the movement of the connection member to be inserted into or removed from the fixing groove of the seat seat; And Guiding the movement of the fixing member, the seat seat includes a guide plate formed with a slit in the direction of downward movement Rear collision impact mitigation system of the vehicle seat. The method of claim 9, The lower link fixing device It is coupled to the fixing member, further comprising an elastic member for providing a restoring force when the fixing member is moved Rear collision impact mitigation system of the vehicle seat. The method according to claim 4 or 7, The first wire link and the second wire link Formed with curved wire Rear collision impact mitigation system of the vehicle seat. The method of claim 1, The second link device Further comprising a recliner device for rotating the seat back at a predetermined angle by the lever Rear collision impact mitigation system of the vehicle seat.

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