Friction clutch and belt retractor with friction clutch
First Claim
1. A belt retractor comprising a belt spool rotatably mounted in a frame, a locking mechanism for said belt spool with at least one locking disc connected to said belt spool, and a torque limiting member arranged in a force flow path between said belt spool and said locking disc, said torque limiting member being constructed as a friction clutch comprising first and second clutch faces lying opposite each other and a friction member arranged between said first and second clutch faces, said friction member being constructed as a flat spring part having shaped sections, said shaped sections lying at least partially against at least one of said first and second clutch faces, wherein a first clutch plate is provided which is connected non-rotatably with said belt spool and includes said first clutch face and wherein a second clutch plate is provided which is connected non-rotatably with said locking disc and includes said second clutch face and a plate being arranged between said first and second clutch faces which has said elastic shaped sections, each of said shaped sections having a cross-section in the form of a circular arc.
1 Assignment
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Accused Products
Abstract
A belt retractor comprises a belt spool rotatably mounted in a frame, a locking mechanism for the belt spool with at least one locking disc connected to the belt spool, and a torque limiting member arranged in a force flow path between the belt spool and the locking disc. The torque limiting member is constructed as a friction clutch comprising two clutch faces lying opposite each other and a friction member arranged between the clutch faces. The friction member is constructed as a flat spring part having shaped sections. The shaped sections lie at least partially against at least one of the clutch faces.
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Citations
6 Claims
- 1. A belt retractor comprising a belt spool rotatably mounted in a frame, a locking mechanism for said belt spool with at least one locking disc connected to said belt spool, and a torque limiting member arranged in a force flow path between said belt spool and said locking disc, said torque limiting member being constructed as a friction clutch comprising first and second clutch faces lying opposite each other and a friction member arranged between said first and second clutch faces, said friction member being constructed as a flat spring part having shaped sections, said shaped sections lying at least partially against at least one of said first and second clutch faces, wherein a first clutch plate is provided which is connected non-rotatably with said belt spool and includes said first clutch face and wherein a second clutch plate is provided which is connected non-rotatably with said locking disc and includes said second clutch face and a plate being arranged between said first and second clutch faces which has said elastic shaped sections, each of said shaped sections having a cross-section in the form of a circular arc.
- 3. A belt retractor comprising a belt spool rotatably mounted in a frame, a locking mechanism for said belt spool with at least one locking disc connected to said belt spool, and a torque limiting member arranged in a force flow path between said belt spool and said locking disc, said torque limiting member being constructed as a friction clutch comprising first and second clutch faces lying opposite each other and a friction member arranged between said first and second clutch faces, said friction member being constructed as a flat spring part having shaped sections, said shaped sections lying at least partially against at least one of said first and second clutch faces, wherein a first cylinder face is provided which is connected non-rotatably with said belt spool and includes said first clutch face and a second cylinder face is provided which is connected non-rotatably with said locking disc and includes said second clutch face, and a cylinder being arranged between said first and second clutch faces which has said elastic shaped sections.
Specification