KR20010092223A - a seat for vehicle - Google Patents

Abstract

PURPOSE: A vehicle seat is provided to protect a neck of a passenger from being injured by absorbing shock efficiently at a collision or sudden breaking with simple structure. CONSTITUTION: A vehicle seat is composed of a supporting plate(24) arranged in front of a backrest(20) to support the back of a passenger, and an elastic member installing the supporting plate in a backrest frame(21) and holding the supporting plate elastically. The elastic member consists of a body fixed in the backrest frame, a T-shaped rubber hinge block extended in the end of the body and fixed in the supporting plate, a hinge pin connecting the backrest for rotation, and a spring holding the supporting plate elastically against the backrest frame. The supporting plate of the backrest is turned backward with contacting to the shoulder of the passenger at a collision. The vehicle seat protects the neck of the passenger by contacting the head of the passenger to a headrest before pulling back the head, and absorbs the shock at a collision.

Description

Seat for vehicle {a seat for vehicle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and in particular, a vehicle seat capable of effectively absorbing a shock applied to a passenger during a collision or collision of a vehicle to prevent neck injuries caused by the head and shoulders of the passenger being sharply flipped back. It is about.

In general, the vehicle seat can be tilted back and forth, and the headrest for supporting the occupant's head on the top of the backrest can be tilted and height-adjusted, so that the seat can be maintained in a comfortable and comfortable position. It is configured to adjust appropriately. However, such a conventional seat is a configuration that only considers the comfort of the occupant, there was a lot of concerns that the occupant is seriously injured if a collision or a collision accident occurs during the operation of the vehicle.

That is, when a collision occurs, the vehicle is suddenly stopped or decelerated, so that the upper body of the occupant is sharply moved forward by the inertial force and then returned to the back. Since there is considerable space left, the inertia acting on the head causes the neck to be severely flipped backwards, resulting in a fatal injury such as fracture of the neck bone. In addition, in the case of a collision, the upper body of the occupant is leaned forward and the upper body is flipped back by recoil as the vehicle is suddenly stopped or slowed down. Serious neck injuries such as

On the other hand, there are provided a number of ways to solve this problem, for example, in Korean Utility Model Publication No. 98-53299 when the collision detection sensor installed in the rear bumper and the pressure detection sensor built in the headrest is detected at the same time The motor built into the backrest rotates the headrest forward to support the occupant's head to prevent neck injuries. In Patent No. 99-212790, the headrest is installed to be rotated back and forth and in case of a collision. A pressure sensor for detecting the inertia force and a cylinder for rotating the headrest forward by the signal of the pressure sensor are provided in the backrest to prevent the neck injury of the occupant in the event of a collision.

However, these conventional neck injury prevention seats must be provided with a variety of means for moving the headrest forward in the event of a collision or collision because the structure of the seat is not only complicated but also causes a cost increase. In addition, there is a problem that it is difficult to cope with the instantaneous shock because the sensor detects this when a collision or the like occurs and the driving means is moved according to the signal to move the headrest.

The present invention has been made in view of the above-described conventional problems, and is structurally simple and prevents neck injuries caused by suddenly flipping the occupant's head during an unexpected sudden stop of a vehicle or a collision or collision. It is an object to provide a vehicle seat which can be.

Another object of the present invention is to provide a vehicle seat capable of effectively absorbing shock generated by a collision of the vehicle and at the same time reacting to the instantaneous impact to minimize the neck injury.

Still another object of the present invention is to provide a vehicle seat which can effectively prevent a neck injury caused by a collision of a vehicle, etc. with a simple structure and low cost.

1 is a side view of a conventional vehicle seat schematically showing the state of the occupant according to the collision or collision of the vehicle,

2 is a partial cutaway side view showing a vehicle seat according to an embodiment of the present invention;

Figure 3 is an exploded perspective view showing the main portion of the embodiment of Figure 2,

4A and 4B are partial cutaway side views illustrating an operating state of a vehicle seat of the present invention;

5a to 5c are excerpted side views showing various other embodiments of the elastic element applied to the present invention,

6A and 6B are a front view and a plan view showing a modification of the support plate of the embodiment of FIG.

7 is a perspective view showing another embodiment of the present invention,

8 is a schematic partial cutaway side cross-sectional view of the vehicle seat of FIG. 7;

9A and 9B are cross-sectional views illustrating an excerpt from FIG. 8.

<Explanation of symbols for main parts of drawing>

10: cushion 20: backrest

20a: receiving groove (of support plate) 21: back frame

24: support plate 25, 25 ': outer cover

26, 27: unit 28: outer cover

30: headrest 40: rubber hinge block

53: hinge pins 54, 56, 57: spring

In order to achieve the above objects, the vehicle seat according to the present invention is disposed at a distance from the front of the backrest to support the back of the occupant, and the support plate is rotatably mounted to the backrest frame and the support plate is mounted. It characterized in that it comprises a resilient element that elastically supports the required position.

According to one preferred feature of the present invention, a substantially T-shaped rubber material hinge block having a body fixed to the back frame, and two fixing tabs extending up and down from one end of the body and fixed to the support plate, respectively. Is done.

According to another preferred feature of the invention, the elastic element is composed of a hinge pin for rotatably connecting the support plate and the back frame to each other, and a spring for supporting the support plate elastically to the back frame.

Accordingly, the present invention responds quickly during sudden sudden stop of a vehicle or when a collision or collision occurs, and absorbs an impact appropriately, and separately separates a neck injury caused by the inertia of the occupant's head being momentarily flipped back. Since it can be prevented as much as possible without the driving means of the vehicle will have a great effect on the comfort and safety of the seat and cost reduction.

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiment of the present invention for purposes of illustration with reference to the accompanying drawings.

(Example)

First, FIG. 1 shows a vehicle seat which is generally used at present, and is mounted on the rear end of the cushion 2 so that the backrest 3 can be folded back and forth, and the headrest 4 is mounted on the top of the backrest 3. The configuration is shown to allow for tilting and height adjustment. In the case of the vehicle seat of Figure 1 the upper body of the occupant (U) at the time of sudden stop of the vehicle as shown in the dashed line with the head is pointed forward and then flipped back as the upper body is supported by the backrest, but the head is supported Therefore, the accident of fracture of the neck bone occurs as described above.

2 and 3, one embodiment of the present invention is a cushion 10 on which a passenger U can sit, and a backrest mounted on the rear end of the cushion 10 to support the back of the passenger U. (20), and the headrest 30 that is mounted on the upper end of the backrest 20 so that the height adjustment and / or tilting to support the head of the occupant (U),

Support plate 24 which is arranged at a distance on the front side of the back frame 21 to support the back of the occupant U and this support plate 24 is elastically so as to be rotatable with respect to the back frame 21 at its lower end. It provides a vehicle seat (S) further comprises an elastic element for supporting the connection, the back frame 21 and the support plate 24 has an outer cover 25, such as textile paper that is covered to receive it at the same time.

The back frame 21 is formed in a substantially rectangular frame shape having, for example, two reinforcing plates 22 and 23 along the vertical direction, and both lower ends thereof are rotatably coupled to a cushion frame (not shown). The backrest frame 21 is configured to properly adjust the installation angle to the cushion 10 by a ratchet (not shown), such a configuration is known.

Since the support plate 24 only needs to support the back of the occupant U, for example, the support plate 24 may be formed of a metal plate, a synthetic resin board, or a synthetic wood board having a required shape, and is preferably formed of a synthetic resin plate having appropriate elasticity. . This is to more effectively absorb the impact applied to the occupant U in the event of a collision.

The elastic element is composed of a hinge block 40 of rubber material having an appropriate elasticity, which is provided with two are arranged at intervals along the horizontal direction. The rubber hinge block 40 is fixed to the lower reinforcement plate 23 of the backrest frame 21 by a first bolt 43 and is separated from the support plate 24, and the body 41. It is an approximately T-shaped elastic body having two fixing tabs 42 each extending to both sides of the support plate 24 and fixed to the support plate 24 with the second bolts 44. At this time, the first and second bolts 43 and 44 are fastened to the nuts 47 and 48 inserted into the bodies 41 and the fixing tabs 42, respectively. And, between the body 41 and each of the fixing tabs 42 is formed to have a relatively smaller thickness than the other portions by the plurality of grooves 45 as shown for more smooth elastic action main flexion portion Function as (46). Preferably, the flexion 46 may be formed softer than the body 41 and the fixing tab 42.

On the other hand, such an elastic element is preferably installed in a position corresponding to the waist of the occupant (U), which is when the shoulder of the occupant (U) in the back and the like when the elastic hinge means is located above the waist of the occupant (U) This is because it is difficult to sufficiently move rearward, and it is difficult to absorb shocks effectively, and when it is located below the waist, it is difficult to stably support the occupant U.

Next, the operation of the vehicle seat (S) according to the present invention configured as described above will be described with reference to FIG.

4A is a normal driving state in which the support plate 24 elastically supports the back of the occupant U by the rubber material hinge block 40 which is an elastic element. Of course, even in this state, the support plate 24 can be freely rotated and restored by an external force. When the occupant U moves the upper body to the rear, as shown by the dashed-dotted line, the upper portion of the support plate 24 is the hinge block. Rotating around the center 40 to support the passenger (U) in a more comfortable state, such as the head is supported by the headrest (30).

When a sudden sudden stop or collision occurs in such a normal driving state, the upper body of the occupant U is sharply moved forward by the inertial force, and then moves backward. In this case, the shoulder portion of the occupant U first has a backrest. In contact with the upper portion of the support plate 24 of the (20). Then, as shown in FIG. 4B, the rubber hinge block 40 is elastically deformed by an external force so that the support plate 24 rotates clockwise. The hinge block 40 corresponds to the waist of the occupant U. FIG. Since it is installed in the position, the upper portion thereof is surely rotated to the rear. At the same time, the shoulder portion of the occupant U is also moved rearward in contact with the support plate 24, but the headrest 30 is mounted on the backrest frame 21 so that the position is fixed, so that the support plate 24 rotates. The head is first contacted with the headrest 30 before the neck of the occupant U is tilted backward so that the neck of the occupant U is prevented to the maximum.

That is, when the upper body of the occupant U moves backward by inertial force during an accident such as a collision, the shoulder part first stops by touching the backrest 20, so that the neck is momentarily flipped back by the inertial force acting on the head and the neck is fractured. The fatal injury of the back is caused, the seat (S) of the present invention in the event of a collision, the support plate 24 of the backrest 20 supporting the back of the occupant (U) and the shoulder of the occupant (U) is quickly contacted Since it rotates backward, the head restraints 30 before the head is flipped back, thereby preventing the neck injury caused by the instantaneous flipping of the head as well as absorbing the shock applied to the occupant U appropriately. It will be possible.

Meanwhile, FIG. 5 shows various other examples of the elastic element to which the present invention is applied. 5a is provided with connecting pieces 51 and 52 so as to correspond to the backrest frame 21 and the support plate 24, and connected by hinge pins 53, both ends of which are supported by the support plate 24. By coupling the torsion spring 54 in elastic contact with the backrest frame 21, the support plate 24 is rotatably supported in a state spaced apart from the backrest frame 21. In this case, in order to prevent excessive reverse rotation of the support plate 24 by the torsion spring 54, a stopper 55 for contacting and supporting the lower end of the support plate 24 is preferably provided. 5B and 5C have the configuration in which the coil spring 56 and the leaf spring 57 are positioned above the hinge pins 53 instead of the torsion spring 54 in the configuration of FIG. 5A. These elastic elements also have a working effect corresponding to the rubber hinge block 40 described above.

6A and 6B show a variation of the support plate 24 'in the above embodiment, which is divided into two units 26 and 27 in which the support plate 24' is arranged horizontally, respectively. The rubber material is connected to the back frame 21 via the hinge block 40. In this case, according to the movement of the occupant U, the two units 26 and 27 act independently in any direction, thereby supporting the occupant U in a more comfortable and comfortable state.

Meanwhile, FIG. 7 and FIG. 8 show another embodiment of the vehicle seat S according to the present invention. This is because the support plate receiving groove 20a is formed to the appropriate depth on the front of the backrest 20 in the configuration of the above-described embodiment, and the support plate 24 has an elastic hinge such as a rubber hinge block 40 in the receiving groove 20a. It is the structure rotatably supported by the backrest frame 21 through a means. Here, the support plate 24 may be configured alone without a separate outer cover as shown in Figure 9a, separate from the outer cover 25 'covering the backrest frame 21 as shown in Figure 9b It may be covered by an outer cover 28. In this embodiment of the configuration, as shown in FIG. 6, the support plate 24 may be formed of two divided units 26 and 27, as well as having the same effect as the above-described embodiment.

In the above, the present invention has been described by way of example, but this is merely for the purpose of illustration, the present invention is not limited to this, of course, can be applied to a general chair.

As described above, according to the present invention, the support plate of the backrest is rapidly moved to the rear in response to the movement of the occupant during sudden sudden stop of the vehicle or in the event of collision or collision, thereby absorbing the shock appropriately and by inertial force. It is possible to effectively prevent the fracture of the neck bone by contacting the headrest before the head of the occupant is flipped back momentarily, thereby minimizing the neck injury of the occupant due to the inertia force during the collision.

In addition, since the support plate is supported by the elastic hinge means to operate in accordance with the movement of the occupant, it is also structurally very simple, such as to completely exclude the complex devices such as the impact sensor and the headrest drive motor as in the prior art.

Therefore, the present invention can improve the comfort and safety of the vehicle seat which can prevent the fracture of the neck, as well as reduce the cost.

Claims (10)

In having the headrest at the top of the backrest, At least one support plate disposed at regular intervals from a bottom surface of the backrest frame to support a passenger's back; And at least one elastic element for rotatably mounting the support plate with respect to the back frame and elastically supporting the support plate at a required position. The vehicle seat according to claim 1, wherein the elastic element is at least one rubber hinge block interposed between the support plate and the back frame. The rubber hinge block is formed in a substantially T-shape having a body fixed to the back frame and spaced apart from the support plate, and two fixing tabs extending to both sides of the body to be fixed to the support plate. A vehicle seat, characterized in that. 2. The vehicle seat according to claim 1, wherein the elastic element comprises a hinge pin for rotatably connecting the support plate with respect to the back frame, and a spring for elastically supporting the support plate with respect to the back frame. 5. The plate according to claim 4, wherein the spring is mounted to the hinge pin and both ends of the torsion spring or the hinge pin are respectively positioned above the support plate and the backrest frame, and one end of the spring is fixed to the backrest frame and the other end contacts the support plate. The seat for a vehicle, characterized in that it is located on the spring or the upper side of the hinge pin made of any one selected from the coil spring which is supported on both the support plate and the back frame. The vehicle seat according to claim 1, wherein the support plate is divided into a plurality of units disposed in the horizontal direction and supported by the back frame, respectively. The vehicle seat according to any one of claims 1 to 6, wherein the support plate and the back frame are accommodated in one exterior cover. The vehicle seat according to any one of claims 1 to 6, wherein the support plate is mounted so as to be located in the receiving groove of the backrest. The vehicle seat according to any one of claims 1 to 5, wherein the elastic element is installed at a position corresponding to the waist of the occupant. The vehicle seat according to any one of claims 1 to 5, wherein the support plate is made of a synthetic resin material having appropriate elasticity.