Safety belt retractor having a rotation dampener
First Claim
1. A safety belt retractor as a safety system in motor vehicles, comprising:
- a U-shaped housing;
a belt shaft mounted in the U-shaped housing and serving as a carrier for a belt strap wound thereon;
a rotation dampener, as a force limiting element, that acts upon said belt shaft, wherein said rotation dampener comprises;
a) a cylindrical housing filled with a highly viscous medium;
b) at least one apertured disk fixedly disposed in said cylindrical housing; and
c) at least one disk piston disposed in said cylindrical housing parallel to said apertured disk, wherein said at least one disk piston is fixedly connected to said belt shaft the rotation of which is to be dampened, and wherein at least one disk piston is provided with a radially extending piston ring that rotates upon rotation of said at least one disk piston.
1 Assignment
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Accused Products
Abstract
A safety belt retractor is provided as a safety system in motor vehicles. The belt shaft is mounted in a U-shaped housing and serves as a carrier for a belt strap wound thereon. A rotation dampener is provided as a force limiting element and acts upon the belt shaft. The rotation dampener comprises: a cylindrical housing filled with a highly viscous medium, at least one apertured disk fixedly disposed in the cylindrical housing, and at least one disk piston disposed in the cylindrical housing parallel to the apertured disk, wherein the disk piston is fixedly connected to the belt shaft, the rotation of which is to be dampened, and wherein the disk piston is provided with a radially extending piston wing that rotates upon rotation of the disk piston.
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Citations
8 Claims
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1. A safety belt retractor as a safety system in motor vehicles, comprising:
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a U-shaped housing;
a belt shaft mounted in the U-shaped housing and serving as a carrier for a belt strap wound thereon;
a rotation dampener, as a force limiting element, that acts upon said belt shaft, wherein said rotation dampener comprises;
a) a cylindrical housing filled with a highly viscous medium;
b) at least one apertured disk fixedly disposed in said cylindrical housing; and
c) at least one disk piston disposed in said cylindrical housing parallel to said apertured disk, wherein said at least one disk piston is fixedly connected to said belt shaft the rotation of which is to be dampened, and wherein at least one disk piston is provided with a radially extending piston ring that rotates upon rotation of said at least one disk piston. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification