CN100581880C

CN100581880C - Self-locking safety air sac of strap

Info

Publication number: CN100581880C
Application number: CN200810012293A
Authority: CN
Inventors: 符锐; 王玲; 尹高纪; 陈静
Original assignee: JINHENG MOTOR SAFETY SYSTEM CO Ltd JINZHOU
Current assignee: Shenyang Jinbei Jinheng Automotive Safety System Co., Ltd.
Priority date: 2008-07-13
Filing date: 2008-07-13
Publication date: 2010-01-20
Anticipated expiration: 2028-07-13
Also published as: CN101318496A

Abstract

An automatic dead locking safety air bag with drawstrings is provided with a module bracket; an air generator and an air bag are arranged on the module bracket; the drawstrings are arranged in the air bag. The automatic dead locking safety air bag with drawstrings is characterized in that the drawstrings are at least two and are respectively a short drawstring and a long drawstring; a drawstring dead locking mechanism which controls dead lock by the long drawstring is arranged in the module bracket; one ends of the short drawstring and the long drawstring are respectively connected at the middle part and at one side of the front end of the air bag; the other ends of the short drawstring and the long drawstring are respectively connected on the drawstring locking mechanism. The automatic dead locking safety air bag with drawstrings has the advantages of simple structure, being compatible with a current safety air bag system, needing no passenger sensors, being capable of automatically adjusting the expanding depth of the air bag according to different passengers, needing no any change to the structure of the body of the vehicle and being capable of carrying out effective protection to different passengers only by using the current ignition loop.

Description

Self-locking safety air sac of strap

Technical field

The present invention relates to a kind of air bag device that is provided on the automobile, particularly a kind of self-locking safety air sac of strap.

Background technology

Existing safety air bag all is once to fire basically; promptly in case collision; air bag breaks out out with regard to whole inflations; because its force of explosion is applicable to protection to normal occupant greatly thereby only, the protection that can not suit for the forward less occupant of sitting posture or the occupant that offs normal even can cause extra injury.In order to address this problem; the protection that realization suits to different occupants and produced intelligent safety air bag; intelligent air bag need rely on various occupant sensors that the occupant is judged; and then the control air bag launches with different conditions; so this intelligent airbag structure complexity; involve great expense, installation and maintenance inconvenience, and body structure had special requirement.

Summary of the invention

The objective of the invention is to solve the problems referred to above that prior art exists; provide a kind of simple in structure; without any need for occupant sensor; can launch the degree of depth according to different occupant's automatic guidance, need not body structure changed and just can realize self-locking safety air sac of strap that different occupants are effectively protected.

The present invention is achieved in that it has a module carrier, on module carrier, be provided with gas generator and airbag, in airbag, be provided with drawstring, its special character is: described drawstring is at least two, and be respectively short drawstring and long drawstring, in module carrier, be provided with by the locked drawstring locking mechanism of long drawstring control, described short drawstring and long drawstring one end are connected to airbag front center and airbag front end one side, the short drawstring and the long drawstring other end are connected on the drawstring locking mechanism, be tightened up the back earlier at long drawstring and the locked airbag front end that makes of short drawstring can be kept recess, when short drawstring is tightened up earlier, can airbag normally be launched from the disengagement of drawstring locking mechanism by the drawstring locking mechanism.

Above-mentioned self-locking safety air sac of strap, described drawstring locking mechanism is by the base that is installed on the module carrier, be fixed on the guide pin bushing of base one side, be inserted into the pin that draws in the guide pin bushing, be separately fixed at the connection dop and the L type dead bolt that draw the pin two ends, be sleeved on the spring that draws on the pin, and be hinged on the T type rotating shaft on the base and the torsion spring that is located in the rotating shaft of T type constitutes, described L type dead bolt is plugged on the base and is corresponding with the rotating shaft of T type, the described short drawstring end that links to each other with the drawstring locking mechanism is fixed in the rotating shaft of T type, and the long drawstring end that links to each other with the drawstring locking mechanism is fixed on and is connected on the dop.

Advantage of the present invention is: simple in structure; compatible mutually with current air bag system; without any need for occupant sensor; can launch the degree of depth according to different occupant's automatic guidance airbags; need not body structure is changed, only use current ignition circuit can realize different occupants are effectively protected.If run into the forward less occupant of sitting posture or the occupant that offs normal at the airbag initial stage of launching, the airbag both sides are faster than the development rate at its middle part, therefore long drawstring can be subjected to the bigger pulling force of airbag earlier, it is locked that drawstring will be lacked by the drawstring locking mechanism in long drawstring tension back, make the airbag front end keep recess, thereby make the occupant of improper seating position obtain better protection; If that airbag runs in initiation process is normal occupant; the airbag front center is faster than the development rate of its both sides; therefore short drawstring can be subjected to the bigger pulling force of airbag earlier; can airbag normally be launched from the disengagement of drawstring locking mechanism after the short drawstring tension, to reach the normal occupant's of protection purpose.

Description of drawings

Fig. 1 is structural representation of the present invention (when short drawstring is locked);

Fig. 2 is the short drawstring release position of the present invention scheme drawings;

Fig. 3 is the structural representation of drawstring locking mechanism of the present invention;

Fig. 4 is the birds-eye view of Fig. 3.

Among the figure: airbag 1, module carrier 2, gas generator 3, pressing plate 4, drawstring locking mechanism 5, base 501, L type dead bolt 502, spring 503, guide pin bushing 504 draws pin 505, connects dop 506, T type rotating shaft 507, torsion spring 508, short drawstring 6, long drawstring 7.

The specific embodiment

As shown in the figure, the present invention has a module carrier 2, on module carrier 2, be provided with gas generator 3 and airbag 1, in airbag 1, be provided with two drawstrings (also can be three or more), and be respectively short drawstring 6 and long drawstring 7, one end of short drawstring 6 and long drawstring 7 is connected to airbag 1 front center and airbag 1 front end one side, by bolt pressing plate 4 is arranged in module carrier 2, is fixed with on pressing plate 4 by the locked drawstring locking mechanism 5 of long drawstring 7 controls.Drawstring locking mechanism 5 is by the base 501 that is fixed on the pressing plate 4, be welded on the guide pin bushing 504 of base 501 1 sides, be inserted into and draw pin 505 in the guide pin bushing 504, be separately fixed at the connection dop 506 and the L type dead bolt 502 that draw pin 505 two ends, be sleeved on and draw on the pin 505 and the spring 503 between L type dead bolt 502 and guide pin bushing 504, and be hinged on the torsion spring 508 that T type rotating shaft 507 on the base 501 and symmetry be enclosed within the T type rotating shaft 507 and constitute, wherein L type dead bolt 502 is plugged on the base 501 and is corresponding with the rotating shaft 507 of T type.The other end of described short drawstring 6 is enclosed within the free end of T type rotating shaft 507, and the other end of long drawstring 7 is fixed on and connects on the dop 506.Present embodiment provides a kind of form of drawstring locking mechanism 5, but reality is not limited by present embodiment.

When collision happens, gas generator 3 charges into gas in the airbag 1, if run into the forward less occupant of sitting posture or the occupant that offs normal at the 1 expansion initial stage of airbag, airbag 1 has just been gone out decorative cover and will have been contacted with the occupant, at this moment the occupant launches to play inhibition to airbag 1, make airbag 1 both sides faster than the development rate at its middle part, therefore long drawstring 7 is subjected to the bigger pulling force of airbag 1 earlier, block by drawing pin 505 drive L type dead bolts 502 to be inserted in the base 501 and with T type rotating shaft 507 long drawstring 7 tension backs, T type rotating shaft 507 can not be rotated, thereby it is locked to lack drawstring 6, makes airbag 1 front end keep recess, thereby makes the occupant who is in the OOP state obtain better protection; If that airbag 1 runs in initiation process is normal occupant; airbag 1 front center is faster than the development rate of its both sides; therefore short drawstring 6 can be subjected to the bigger pulling force of airbag 1 earlier; meeting pulling T type rotating shaft 507 is rotated and is finally thrown off from T type rotating shaft 507 airbag 1 is normally launched after short drawstring 6 tensions, to reach the purpose of protecting normal occupant.

Claims

1, a kind of self-locking safety air sac of strap, comprise module carrier (2), on module carrier (2), be provided with gas generator (3) and airbag (1), in airbag (1), be provided with drawstring, it is characterized in that: described drawstring is at least two, and be respectively short drawstring (6) and long drawstring (7), in module carrier (2), be provided with by the locked drawstring locking mechanism (5) of long drawstring (7) control, described short drawstring (6) and long drawstring (7) one ends are connected to airbag (1) front center and airbag (1) front end one side, the short drawstring (6) and long drawstring (7) other end are connected on the drawstring locking mechanism (5), be tightened up earlier at long drawstring (7) and afterwards pass through drawstring locking mechanism (5) and locked airbag (1) front end that makes of short drawstring (6) can be kept recess, can throw off from drawstring locking mechanism (5) when being tightened up earlier when short drawstring (6) and make the normal expansion of airbag (1).

2, self-locking safety air sac of strap according to claim 1, it is characterized in that: described drawstring locking mechanism (5) is by the base (501) that is installed on the module carrier (2), be fixed on the guide pin bushing (504) of base (501) one sides, be inserted into and draw pin (505) in the guide pin bushing (504), be separately fixed at the connection dop (506) and the L type dead bolt (502) that draw pin (505) two ends, be sleeved on the spring (503) that draws on the pin (505), and be hinged on the T type rotating shaft (507) on the base (501) and the torsion spring (508) that is located in the T type rotating shaft (507) constitutes, it is last and corresponding with T type rotating shaft (507) that described L type dead bolt (502) is plugged on base (501), described short drawstring (6) end that links to each other with drawstring locking mechanism (5) is enclosed within the T type rotating shaft (507), and long drawstring (7) end that links to each other with drawstring locking mechanism (5) is fixed on and is connected on the dop (506).