Land vehicles – Wheeled – Attachment
Patent
1995-11-03
1998-09-01
Dickson, Paul N.
Land vehicles
Wheeled
Attachment
297480, 102204, 102272, B60R 2246
Patent
active
057999775
DESCRIPTION:
BRIEF SUMMARY
CROSS-REFERENCE TO RELATED APPLICATION:
This application is based on International Application No. PCT/JP95/01272 filed Jun. 26, 1995, and claims priority based upon Japanese Patent Applications No. 6-144949 filed Jun. 27, 1994; No. 7-138334 filed Jun. 5, 1995; and No. 7-1520212 filed Jun. 19, 1995.
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a gas generator for a seat belt retracting power generating device to supply power to an emergency retracting device of a seat belt retractor.
2. Description of the Related Art
General automobiles are provided with seat belts to protect the driver or passenger from shocks at a collision accident. The seat belt worn by the driver or passenger is restrained by a seat belt retractor.
And, it has been required these years that to protect the driver or passenger in case of panic stopping or collision, an emergency retracting device is disposed on a seat belt retractor for rewinding the seat belt, thereby instantaneously retracting the seat belt.
The above type of seat belt retractor is disclosed in Japanese patent Application Laid-open Print No. Hei 1-240345 for example.
This known seat belt retractor will be described with reference to FIG. 15.
In the drawing, a seat belt 104, pulled upward out of a seat belt retractor 103 which is fixed at the lower part of a center pillar 102 of a body work 101, is passed through a through ring 105 which is attached at the upper part of the center pillar 102, and extended downward. And, a seat belt end 107 is fixed to the rear on one side of a seat 106.
And, a tongue plate 108 is freely movably attached to the seat belt 104 between the through ring 105 and the seat belt end 107.
The passenger seated on the seat 106 pulls out the seat belt 104 from the seat belt retractor 103, and inserts the tongue plate 108 into a buckle 109 which is fixed to the rear on the other side of the seat 106 opposite to the seat belt end 107, thus the seat belt 104 crosses the passenger from shoulder to opposite hip.
This seat belt retractor uses the combustion gas from gunpowder as power for instantaneously retracting the seat belt. Specifically, the combustion gas from gunpowder instantaneously moves the piston within a cylinder, and a cable whose one end is connected to the piston is moved to retract the end of the seat belt and locks it.
The above type of seat belt retracting power generating device is disclosed in Japanese patent Application Laid-open Print No. Hei 3-132447 for example.
This known seat belt retracting power generating device will be described with reference to FIG. 16 and FIG. 17. FIG. 16 shows a seat belt retracting power generating device, and FIG. 17 shows a gas generator for the seat belt retracting power generating device.
In these drawings, reference numeral 201 shows a housing for accommodating a gas generator 202.
The housing 201 is provided with a gas passage 203 for guiding the combustion gas generated from the gas generator 202.
The housing 201 has a cylinder 204 protruded from its one side substantially perpendicularly to its axial line.
Specifically, the cylinder 204 has a male thread 205 at its one end, the male thread 205 is threaded into a female thread 206 of the housing 201 to connect the cylinder 204 to the housing 201, and the opening of the cylinder 204 on the housing 201 side is communicated with the gas passage 203.
The cylinder 204 has a piston 207 in it, and the end of the piston 207 on the housing 201 side is connected to one end of a cable 208.
And, the cable 208 passes through a pail of the gas passage 203 and pulled out of the side opposite to the cylinder 204 of the housing 201.
The other end of the cable 208 is fixed to E t cable end 209 which is connected to an emergency retracting device (not shown).
The piston 207 has a seal ring 210 on the housing 201 side, and a cable sealing 211 is disposed to cover the cable 208.
A firing pin 213 is disposed next to (above in the drawing) a primer 212 of the gas generator 202. The firing pin 213 can stab the primer 212 by a giv
REFERENCES:
patent: 2703531 (1955-03-01), Graumann et al.
patent: 3415192 (1968-12-01), Stadler et al.
patent: 3499386 (1970-03-01), Stadler et al.
patent: 4574702 (1986-03-01), Brandt
patent: 4760792 (1988-08-01), Dumas et al.
patent: 5279227 (1994-01-01), Nishizawa
Kunii Hitoshi
Miyazaki Hitoshi
Saito Kazuya
Sato Takashi
Dickson Paul N.
Nippon Koki Co. Ltd.
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