KR19980019896A - Headrest actuator - Google Patents

Abstract

The present invention relates to a head restraint device having a built-in airbag device for raising a headrest during a vehicle crash and protecting a driver or a passenger's passenger. The present invention relates to a safety device for controlling a power supply unit 1 and supply of the power supply unit. A sensor 2, an acceleration sensor 7 for measuring the acceleration of the vehicle, a central processing unit 6 for controlling the entire circuit of the airbag system, and a first electric which is operated according to the command of the central processing unit It consists of a switch 3 and a second electrical switch 4 and an inflator 15 which is connected to the switches 3 and 4 and operates an airbag module for a headrest.

As a result, the head restraints are raised during collision or overturning of the vehicle, and the airbag is extended between the head rest poles to protect the head of the driver or passenger.

Description

Headrest actuator

[Technical Field]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest actuating device which is operated in a vehicle crash of a vehicle, and more particularly to a headrest actuating device having an airbag device for raising the headrest in a vehicle crash and protecting a driver or a passenger passenger. .

[Prior art]

Referring to FIG. 1, the conventional seat 1 includes a seat back 2 as a backrest, a seat cushion 3 as a buttocks, a headrest 4 as a headrest, and a headrest. And a pole guide 6 for guiding the pole 5 to be fixed to the seatback.

The conventional headrest as described above can be adjusted up and down by a constant device. However, especially in the case of an open car, there is no roof panel when the vehicle is overturned, which greatly injuries the driver or passenger.

Even in the case of a general vehicle, the airbag is installed, but the airbag protects the passenger's face but not the rear head.

Accordingly, the present invention is to overcome the above-mentioned conventional problems, the object of the present invention is to raise the head rest during collision or overturning of the vehicle and at the same time extend the airbag between the head rest pole to protect the head of the driver or passenger It is.

[Summary of invention]

As an example of a headrest operating device for achieving the object of the present invention, a power supply, a safety sensor for controlling the supply of the power supply, an acceleration sensor for measuring the acceleration of the vehicle, the entire circuit of the airbag system A central processing unit for controlling the control unit, a first electrical switch and a second electrical switch operated according to a command of the central processing unit, and an inflator connected to the switch and operating an airbag module for a headrest.

1 is a perspective view of a typical automobile seat.

2 is a block diagram of an airbag system according to the present invention.

3 is a block diagram of a head restraint operation apparatus according to the present invention.

4 is a cross-sectional view of the headrest actuator according to the invention.

Explanation of symbols on the main parts of the drawings

1: sheet 2: seat back

3: seat cushion 4, 44: headrest

5, 45: Paul 6: Pole guide

11: power supply 12: safety switch

13: electric switch 14: electric switch

15: Inflator 16: CPU

17: acceleration sensor 30: housing

31, 47: spiral

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 2 and 3.

Referring to FIG. 2, the door lock operating device according to the present invention includes a power supply unit 11, a safety sensor 12 for controlling the supply of the power supply unit, and an acceleration sensor for measuring the acceleration of the vehicle. (17), a central processing unit (16) for controlling the entire circuit of the airbag system, a first electrical switch (13) and a second electrical switch (14) actuated by commands of the central processing unit, and It is composed of an inflator 15 which is connected to the switches 13 and 14 and operates the airbag module for the headrest.

Referring to FIG. 3, a headrest actuator according to the present invention is mounted between the poles 45 in the seatback 2.

Referring to FIG. 4, the head rest 44 including the pawl 45 having the spiral portion 47 and the pole housing 30 having the spiral portion 31 engaged with the spiral 47 are provided. And an airbag 21 provided between the pawls 45 and an inflator 15 for trapping the airbag 21.

By the above configuration, the door lock operating device at the time of the vehicle collision of the present invention operates as follows.

When a collision occurs, the central processing unit 16 recognizes the collision by the acceleration sensor 17 and the safety sensor 12, and the central processing unit turns on the electrical switch, so that a high current flows in the inflator 15. The airbag 21 is deployed.

When the airbag 21 is deployed, the upper surface 48 between the pawls 45 of the seatback 2 is torn. Then, the headrest 44 is raised due to the inflation of the airbag, and eventually the airbag is inflated between the headrest 44 and the pawl 45.

As described above, the headrest operating device according to the present invention has the effect of protecting the head of the driver or the passenger by extending the airbag between the headrest poles while simultaneously raising the headrest during the collision or overturning of the vehicle.

Claims (3)

A power supply 1, a safety sensor 2 for controlling the supply of the power supply, an acceleration sensor 7 for measuring the acceleration of the vehicle, and a central processing unit for controlling all circuits of the airbag system ( 6), an inflator connected to the first electrical switch 3 and the second electrical switch 4 operated according to the command of the central processing unit and the switches 3 and 4 to operate the airbag module for the headrest. Headrest operating device, characterized in that consisting of (15). The method of claim 1, The airbag module is mounted between the poles 45 in the seatback (2). The method of claim 2, The airbag module includes a head rest 44 including a pole 45 having a spiral portion 47, a pole housing 30 having a spiral portion 31 engaged with the spiral portion 47, and the pole. Headrest operating device, characterized in that consisting of an airbag (21) provided between the (45) and the inflator (15) for embedding the airbag (21).