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Belt retractor for a vehicle safety belt

一种安全带卷收器、安全带的技术，应用在车内安全带、皮带收紧器、车辆部件等方向

Inactive Publication Date: 2015-02-04
KEY SAFETY SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this prior art load limiter, load limiting is performed only by the brake and not by the medium

Method used

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  • Belt retractor for a vehicle safety belt
  • Belt retractor for a vehicle safety belt
  • Belt retractor for a vehicle safety belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In the illustrated embodiment, in each case, the seat belt retractor has a frame 7 to which a seat belt reel 1 for a motor vehicle is rotatably mounted. The seat belt retractor also includes a load limiter 2, which acts on the rotation of the seat belt reel 1 in an accident and therefore consumes energy.

[0042] The load limiter 2 has a closed load limiter chamber 8, and the pellets 3 are enclosed in the closed load limiter chamber 8. Pellets 3 include dry granular solids. The granular fine particles may have a specific hardness equivalent to at least 4 Mohs hardness (absolute grinding hardness: 5). For example, the granular fine particles include mineral fine particles, such as quartz sand (SiO 2 ). However, the granular particles may also include plastic, glass or metal materials. The diameter of the substantially rounded fine particles of the pellets may be between 0.1 mm and 0.4 mm. The granules of the pellets may also include different materials and / or have diffe...

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PUM

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Abstract

A belt retractor comprising a safety belt reel (1) rotatably mounted on a frame (7) and a load limiter (2) which acts on a rotational movement of the belt reel (1) and has a switchable energy consumption, said load limiter having a granulate (3), which is enclosed in a closed load limiter chamber (8) and consists of dry, granular solid, and at least one rotating member (4) which can be rotated relative to the granulate (3), the energy consumption resulting from shear forces acts between the grains of granulate.

Description

Technical field [0001] The present invention relates to a seat belt retractor for a vehicle seat belt, wherein a seat belt reel is rotatably mounted on a frame and includes a load limiter that acts on the rotation of the seat belt reel and has a switchable Energy consumption. Background technique [0002] In the prior art seat belt retractor known from DE 10 2009 014 999 A1, the load limiter contains a brake, with which the relative rotation between the element to be braked and the supporting element is in the pressure chamber A pressure rise is generated in the chamber, and this pressure rise is then transformed into a brake activating force. The medium filled in the pressure chamber can be silicone or more specifically silicone pellets, the particle diameter of which is usually about 0.2 to 0.3 mm, and with this particle diameter, the axially movable can be partially sheared Shift components. The displacement element displaces the medium provided in the pressure chamber, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R22/34
CPCB60R2022/288B60R2022/285B60R22/3413
Inventor M·斯佩希特G·爱兰达A·费罗
Owner KEY SAFETY SYST
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