KR100198821B1 - Car seat having a safety device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger protection device for an automobile, and in particular, to provide an automobile seat equipped with a safety device for moving and rotating the seat of the automobile rearward in the event of a front collision of the automobile.

The present invention includes a front collision detection sensor (S1) for outputting a predetermined signal when the front collision of the vehicle; An infrared sensor S2 for detecting a passenger in the rear seat; Seat reverse means (10) for moving the seat backwards; Seat back rotation means (20) for rotating the seat back backwards; Seat rotating means (30) for rotating the seat backward; Locking means 40 for preventing the flow of the sheet; Then, the locking means 40 is released to protect the passengers according to the signals input from the front collision detecting sensor S1 and the infrared detecting sensor S2, and the seat reversing means 10 and the seat back rotating means ( 20) and the electronic control unit 100 for driving the seat rotation means 30, in the event of a front collision of the vehicle, the effect of protecting the occupant's chest and knees from the vehicle body pushed backward by the impact of the collision There is.

Description

Car seat with safety device.

The present invention relates to a passenger protection device of a vehicle, and more particularly, a safety device for preventing an occupant's chest and knee from being injured by a front portion of a vehicle that is pushed rear when a front collision of the vehicle occurs. To a car seat having safety device.

In general, automobiles are equipped with various safety devices for the safety of the occupants. The airbag is a representative safety device, and when an automobile collision occurs, the bag is momentarily inflated between the occupant and the steering wheel (or instrument panel) by the control of the electronic control unit that detects the collision. By absorbing the energy, it is configured to prevent the occupant from being injured by the secondary collision by the steering wheel or the wind shield.

However, when the front part of the car is pushed backward by the impact during the front collision of the car, the occupant's chest or knee is greatly damaged by the crash pad and the handle of the car which is pushed into the inside of the car even when the air bag is deployed. There is this.

Accordingly, the present invention has been made in order to solve the above problems, when the front collision of the vehicle, by moving and rotating the seat of the vehicle rearward, the passenger's chest or knee is damaged by the crash pad and the handle of the vehicle, etc. It is an object of the present invention to provide an automobile seat with a safety device to prevent it from becoming.

1 is a block diagram of a vehicle seat equipped with a safety device according to the present invention

Figure 2 is a side configuration diagram showing an embodiment according to the present invention

3 is a front view of FIG. 2

4 is a plan view of FIG.

5a to 5c is an operating state diagram of the seat according to the present invention

Explanation of symbols for main parts of the drawings

S1: forward collision detection sensor, S2: infrared sensor, 10: seat reversing means, 20: seat back rotation means, 30: seat rotation means, 40: locking means, 100: electronic control unit

In order to achieve the above object, the present invention includes a front collision detection sensor for outputting a predetermined signal during the front collision of the vehicle; An infrared sensor for detecting a passenger in the rear seat; Seat reverse means for moving the seat backward; Seat back rotation means for rotating the seat back backwards; Sheet rotating means for rotating the sheet backward; Locking means for preventing the flow of the sheet; And, the electronic control unit for releasing the locking means to protect the passengers in accordance with the signal input from the front collision detection sensor and the infrared sensor, and to drive the seat reversing means, seat back rotation means and seat rotation means Characterized in that it comprises a.

According to the above configuration, when a collision is detected by the front collision detection sensor, the locking means is released from the electronic control unit, and at the same time, the seat reversing means, the seat back rotating means and the seat rotating means are operated, thereby bringing the seat of the vehicle backward. Proceed, then rotate backwards so that the occupant's body rotates backwards. At this time, the electronic control unit adjusts the rotation angle of the seat according to the presence or absence of the rear seat occupant detected by the infrared sensor, so that the seat is rotated within the limit that does not damage the occupant of the rear seat,

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

1 is a block diagram of a vehicle seat equipped with a safety device according to the present invention, Figure 2 is a side view showing an embodiment according to the present invention, Figure 3 is a front view of Figure 2, Figure 4 2 is a plan view of the configuration, Figures 5a to 5c is an operating state of the vehicle seat equipped with a safety device according to the present invention.

As shown in Figure 1, the vehicle seat is equipped with a safety device according to the present invention, the front collision detection sensor (S1), infrared detection sensor (S2), seat backward means 10, seat back rotation means 20 , Seat rotation means 30, locking means 40 and the electronic control unit 100 is configured.

The front collision detection sensor S1 is a sensor for detecting a front collision of a vehicle, and a sensor for detecting a rapid deceleration due to a front collision may be used. When a front collision is detected, a front signal is detected by the electronic control unit 100. Configure it to output. In addition, the infrared sensor S2 is mounted around the rear seat of the vehicle to detect the presence of a passenger in the rear seat, and outputs a detection signal to the electronic control unit 100 when the presence of the passenger is detected in the rear seat.

The seat reversing means 10 is a means for moving the seat cushion 2 of the vehicle to the rear, and includes a first transistor 11, a first relay 12, a first motor 13, a pinion 14, and It is configured to have a rack 15 mounted in the front and rear direction at the bottom of the seat cushion (2).

The first transistor 11 is connected to the electronic control unit 100 such that the base is controlled by the electronic control unit 100, and the first relay 12 is configured to switch when the first transistor 11 is switched on. One transistor 11 is connected. In addition, the first motor 13 connected to be driven when the first relay 12 is switched on is coupled to the shaft end by the pinion 14 meshing with the rack 15. The rack 15 advances backward by the pinion 14 which rotates according to the drive of the structure, and moves the seat backward.

The seat back rotation means 20 is composed of a second transistor 21, a second relay 22, a second motor 23, a prime gear 24, a coupling gear 25 and a driven gear 26.

The second transistor 21 is connected to the electronic control unit 100 so that the base is controlled by the electronic control unit 100, and the second relay 22 is configured to switch when the second transistor 21 is switched on. It is connected to two transistors 21. The driven gear 26 is fixed to the center of the lower frame center of the seat back (1) is coupled, the connecting gear 25 is coupled to the center of the rear frame of the seat cushion (2) by a bearing or the like, the driven gear And to engage with (26). The second motor 23, which is connected to be driven when the second relay 22 is switched on, is configured to mesh with the other side of the coupling gear 25, so that when the motive gear 24 rotates, The rotational force is transmitted to the driven gear 26 through the connecting gear 25 so as to rotate the seat back 1 backward.

The sheet rotating means 30 is configured to include a third transistor 31, a third relay 32, a rising solenoid 33 and a falling solenoid 33 ′.

The third transistor 31 is connected to the electronic control unit 100 so that the base is controlled by the electronic control unit 100, and the third relay 32 is configured to switch when the second transistor 31 is switched on. Three transistors 31 are connected. The lifting solenoid 33 allows the rod of the piston to be coupled by a hinge to the center of the front frame of the seat cushion 2, and the opposite side of the piston rod to be hinged to the body below the seat cushion, and the third relay When 32 is switched on, the rod of the piston is configured to rise.

Then, two descending solenoids 33 'are provided at the rear of the seat cushion 2, so that the rods of each piston are coupled to both ends of the rear frame by hinges, respectively, and the opposite side of each piston rod is below the seat cushion. Each hinge is coupled to the body of the, and when the third relay 32 is switched on is configured to lower the rod of each piston. At this time, the movable member 3 is fixedly attached to the lower surface of the seat cushion 2, and the movable member 3 is mounted on the fixed member 4 supported by the support 5, thereby moving the movable member 3. And the load of the sheet is supported by the fixing member (4).

A locking means 40 is installed between the moving member 3 and the fixing member 4 to prevent the flow of the moving member 3, and the locking means 40 drives the first relay 12. It is configured to include a horizontal solenoid 41 and a vertical solenoid 42 connected to supply the city power.

The horizontal solenoid 41 is mounted inside the movable member 3 downwardly open, and is equipped with a pair of return springs connecting the two fixed balls 41 'located at the center to both ends, respectively. It consists of an electromagnet that generates an electromagnetic force that pulls the return spring to both ends. In addition, the vertical solenoid 42 is fixed to the fixing member 4 at the lower portion of the horizontal solenoid 41, and the locking member 42 ′ that is restrained between the fixing balls 41 ′ is attached to the piston rod. Is coupled, it is configured to generate an electromagnetic force so that the locking member 42 'is pulled out between the fixing ball (41'). As shown in Figure 4, such a locking means 40, it is preferable for the safety to mount one by each corner portion.

When the detection signal is input from the front collision detection sensor S1 and the infrared detection sensor S2, the electronic control unit 100 receives the first to third transistors 11, 21, 31 according to the stored data. By supplying power to the device, the locking means 40 is released, and the seat reversing means 10, the seat back rotating means 20, and the seat rotating means 30 are driven.

By the above configuration, when the front collision of the vehicle occurs, in the electronic control unit 100 that detects this by the front shock sensor (S1), the rear seat by the signal detected by the infrared sensor (S2) After determining whether there is a passenger, a predetermined current is sequentially supplied to the first transistor 11, the second transistor 21, and the third transistor 31.

First, when the current is supplied to the first transistor 11 and the first transistor 11 is turned on, the first relay 12 is turned on so that the current is supplied to the horizontal solenoid 41 and the vertical solenoid 42 to be locked. As the means 40 are released and the first motor 13 is driven to rotate the pinion 14 meshed with the rack 15, a seat as shown in FIG. 5A is shown by the solid arrows in 5B. As shown, the seat of the vehicle is moved rearward. Next, when the current is supplied to the second transistor 21 so that the second transistor 21 is turned on, the second relay 22 is turned on so that the second motor 23 having the motive gear 24 coupled to the shaft end thereof. ) Is driven to rotate the prime mover gear 24, and this rotary force is transmitted to the driven gear 26 through the connecting gear 25, and the driven gear 26 rotates, as shown by the dotted arrows in FIG. 5B. As can be seen, the seat back 1 is rotated backwards. When the current is supplied to the third transistor 31 and the third transistor 31 is turned on, the third relay 32 is turned on, thereby supplying current to the rising solenoid 33 and the falling solenoid 33 '. By raising the piston rod of the rising solenoid 33 and simultaneously lowering the falling solenoid 33 ', the entire seat rotates backward as shown by the arrow in FIG. 5C. At this time, if it is determined that there is no occupant in the rear seat by the infrared sensor (S2), in the electronic control unit 100 so that the seat is rotated to the maximum as long as the rear head of the passenger sitting on the rotating seat does not touch the floor of the car. Control the current applied to the third transistor 31, and if it is determined that the occupant is in the rear seat, control the current applied to the third transistor 31 in the electronic control unit 100 so that the seat is rotated only up to 30 degrees The rear occupant is not injured by the rotating seat. And, in the case of a vehicle equipped with an air bag, such a reverse and rotational operation of the seat is made before the seat back is deployed, thereby minimizing the impact on the occupant during the front collision.

As can be seen by the above embodiment, when the front collision of the vehicle by the vehicle seat equipped with the safety device according to the present invention, to protect the occupant's chest and knees from the vehicle body pushed backward by the impact of the collision It can be effective.

Although the above has been described with respect to a vehicle seat equipped with a safety device according to an embodiment of the present invention, the present invention is not limited to this, and those skilled in the art will be able to various modifications and applications.

Claims (5)

A front collision detection sensor for outputting a predetermined signal in front of the vehicle; An infrared sensor for detecting a passenger in the rear seat; Seat reverse means for moving the seat backward; Seat back rotation means for rotating the seat back backwards; Sheet rotating means for rotating the sheet backward; Locking means for preventing the flow of the sheet; And, the electronic control unit for releasing the locking means to protect the passengers in accordance with the signal input from the front collision detection sensor and the infrared sensor, and to drive the seat reversing means, seat back rotation means and seat rotation means Car seat provided with a safety device, characterized in that it comprises a. The apparatus of claim 1, wherein the sheet reversing means comprises: a first transistor connected to the electronic control unit; A first relay switched on the first transistor; A rack mounted on the lower portion of the seat cushion in the front-rear direction; And a first motor for rotating the pinion engaged with the rack, and a pinion coupled to the shaft end such that the rack is driven backward according to the switching of the first relay. The electronic device of claim 1, wherein the seat back rotating means comprises: a second transistor connected to the electronic control unit; A second relay switched on the second transistor; A driven gear having a rotating shaft coupled to a center of the lower frame of the seat back; A connecting gear coupled to the center of the rear frame of the seat cushion and engaged with the driven gear; And a second motor for rotating the primary gear coupled to the shaft end in a direction of rotating the seat back rearward according to the switching of the second relay. Car seat with device. The electronic device of claim 1, wherein the sheet rotating means comprises: a third transistor connected to the electronic control unit; A third relay switched on the second transistor; A lifting solenoid which hinges the piston rod to the front frame of the seat cushion, the opposite side of the piston rod is hinged to the body below the seat cushion, and raises the front of the seat cushion in accordance with the switching of the third relay, and The piston rod is hinged to the rear frame of the seat cushion, and the opposite side of the piston rod is hinged to the body below the seat cushion, and the lower solenoid lowering the rear portion of the seat cushion in accordance with the switching of the third relay. Car seat with a safety device, characterized in that provided. The method of claim 1, wherein the locking means comprises: a moving member attached to the lower seat cushion; A horizontal solenoid mounted inside the moving member and equipped with a pair of return springs connecting two fixed balls located at the center to both ends, and having an electromagnet for generating an electromagnetic force for pulling each return spring to both ends. Wow; A locking member restrained between the balls is coupled to the piston rod, and a vertical solenoid generating an electromagnetic force so that the locking member escapes between the balls, and the vertical solenoid is received and installed to be fixed to the body under the moving member. Car seat provided with a safety device, characterized in that it comprises a fixing member.