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US 9,610,920 B2Granted
Webbing take-up device
AssigneeKabushiki Kaisha Tokai Rika Denki Seisakusho
InventorsWataru Yanagawa, Kengo Miura, Kosuke Miida
Life of this patent
Estimating the term…
Abstract
In a pretensioner mechanism of a webbing take-up device, a sealing member seals a communicating hole of a piston. When a force limiter mechanism is operated and rotating of a spool in a pull-out direction is allowed, the piston is moved to an upper side in a state in which the sealing member is pressed and contacted against a cylinder. As a result, the sealing member is turned and the sealing of the communicating hole by the sealing member is released. In consequence, a number of components may be reduced and assembly characteristics of the pretensioner mechanism may be improved.
Claims5
A webbing take-up device comprising:
- a webbing that can be applied to an occupant of a vehicle;
- a take-up member onto which the webbing is taken up, by the take-up member being rotated in a take-up direction, the take-up member being rotated in a pull-out direction by the webbing being pulled out;
- a moving member in which a communicating hole is provided, the communicating hole communicating between one side and another side of the moving member, and the take-up member being rotated in the take-up direction by the moving member moving toward the one side;
- a restricting member that is provided at the communicating hole and restricts communication through the communicating hole;
- an accommodating member in which the moving member is accommodated, the moving member being moved to the one side by gas being supplied to the accommodating member at another side of the moving member;
- and
- a force limiter mechanism that allows rotating of the take-up member in the pull-out direction when a load from the occupant that is at least a predetermined load or more acts on the take-up member via the webbing,
- wherein, when the force limiter mechanism allows rotating of the take-up member in the pull-out direction, the moving member moves to the another side due to rotating of the take-up member in the pull-out direction in a state in which the restricting member is in contact with the accommodating member, and the restricting member allows communication through the communicating hole, and
- wherein, by the moving member being moved to the another side in the state in which the restricting member is in contact with the accommodating member, the restricting member is caused to be turned and allows communication through the communicating hole.
6 more elements
A webbing take-up device comprising:
- a webbing that can be applied to an occupant of a vehicle;
- a take-up member onto which the webbing is taken up, by the take-up member being rotated in a take-up direction, the take-up member being rotated in a pull-out direction by the webbing being pulled out;
- a moving member in which a communicating hole is provided, the communicating hole communicating between one side and another side of the moving member, and the take-up member being rotated in the take-up direction by the moving member moving toward the one side;
- a restricting member that is provided at the communicating hole and restricts communication through the communicating hole;
- an accommodating member in which the moving member is accommodated, the moving member being moved to the one side by gas being supplied to the accommodating member at another side of the moving member;
- and
- a force limiter mechanism that allows rotating of the take-up member in the pull-out direction when a load from the occupant that is at least a predetermined load or more acts on the take-up member via the webbing,
- wherein, when the force limiter mechanism allows rotating of the take-up member in the pull-out direction, the moving member moves to the another side due to rotating of the take-up member in the pull-out direction in a state in which the restricting member is in contact with the accommodating member, and the restricting member allows communication through the communicating hole,
- wherein:
- the communicating hole is opened at:
- a supply-side of the moving member, at which the gas is supplied, and a facing side of the moving member, at which the moving member faces an inner face of the accommodating member in a state in which the moving member is accommodated in the accommodating member;
- and the restricting member is able to be in contact with the inner face of the accommodating member at the facing-side,
- wherein an accommodating portion is formed at the moving member at the facing side, the accommodating portion communicating through the communicating hole and enabling to accommodate the restricting member, and
- wherein, by the moving member being moved to the another side in the state in which the restricting member is in contact with the inner face of the accommodating member, the restricting member is caused to be turned and relatively moved to the accommodating portion side, whereby allows communication through the communicating hole.
11 more elements
Dependencies are inferred from the claim text.