Seatbelt device
First Claim
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1. A seatbelt device comprising a buckle pretensioner, wherein said buckle pretensioner includes:
- a cylinder;
a gas generator provided at one end of said cylinder;
an extruding member extruded from the other end of said cylinder pursuant to combustion gas which is supplied from said gas generator;
a connective member having one end connected to a buckle and the other end connected to a tip of said extruding member; and
a pulley for guiding said connective member so as to convert a movement in the direction that said extruding member is extruded into a movement in the direction that said buckle is retracted.
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Accused Products
Abstract
Provided is a seatbelt device comprising a buckle pretensioner capable of preventing a connective member from being subject to high temperature/pressure and efficiently converting combustion gas, which provides pressure for retracting the buckle, into retractive power.
A buckle pretensioner 10 (30, 40, 50, 60, 70) for retracting the buckle 11 pursuant to combustion gas pressure of powder comprises a connective member 13 connected to the buckle 11, and a retractor 12 (32, 72) for retracting the buckle 11 via the connective member 13. The connective member 13 is arranged in a position such that it is not exposed to the combustion gas.
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Citations
7 Claims
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1. A seatbelt device comprising a buckle pretensioner, wherein said buckle pretensioner includes:
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a cylinder;
a gas generator provided at one end of said cylinder;
an extruding member extruded from the other end of said cylinder pursuant to combustion gas which is supplied from said gas generator;
a connective member having one end connected to a buckle and the other end connected to a tip of said extruding member; and
a pulley for guiding said connective member so as to convert a movement in the direction that said extruding member is extruded into a movement in the direction that said buckle is retracted. - View Dependent Claims (2, 3, 4, 5, 6, 7)
a piston movably housed inside said cylinder; and
a connective rod extending over the other end of said cylinder from said piston.
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3. A seatbelt device according to claim 2, wherein said gas generator is arranged on an axis of a moving direction of said rod.
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4. A seatbelt device according to claim 1, wherein an oxidizer for reducing carbon monoxide gas contained in said combustion gas is arranged between said piston and said gas generator.
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5. A seatbelt device according to claim 1, wherein a catalyst for reducing carbon monoxide gas contained in said combustion gas is arranged between said piston and said gas generator.
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6. A seatbelt device according to claim 1, wherein said piston and rod are connected while in contact with each other.
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7. A seatbelt device according to claim 1, wherein said extruding member comprises a bag which is arranged at the other end of said cylinder and is expandable pursuant to the combustion gas supplied from said gas generator.
Specification