Retractor for safety belts

Abstract

The invention relates to a retractor for safety belts, which comprises a U-shaped frame, wherein the U-shaped frame comprises a first side wall and a second side wall which are symmetrically arranged, as well as a bottom wall connecting the two side walls; lock-up ratchets which can be engaged with lock-up ratchets on a belt retracting barrel for locking are arranged on the first and the second side walls; slide slots which have the same structure and are convenient for the shaft ends of the belt retracting barrel to be arranged into the U-shaped frame and lock-up slots which is convenient for raising the belt retracting barrel up and locking the belt retracting barrel by the lock-up ratchets are arranged on the first and the second side walls; the inner ends of the slide slots and the lock-up slots are through; and openings convenient for the shaft ends on the belt retracting barrel to be led into the slide slots are arranged on the external ends of the slide slots. The U-shaped frame of the retractor is arranged into the belt retracting barrel in a slide slot way; the material removed from the U-shaped frame is less; the side wall is strong and has high strength; the lock-up ratchets are arranged inside to reduce the volume of the whole retractor and occupy less space of a vehicle body; the weight of materials is simultaneously lowered so as to reduce the weight of the vehicle body; and the cost is simultaneously reduced and energy is saved, thereby being beneficial to environment protection.

Description

technical field [0001] The invention relates to the technical field of vehicle safety belt retractors, in particular to a safety belt retractor. Background technique [0002] For the personal safety of drivers and occupants, car seat safety belts are all provided in automobiles at present. Seat belts are generally divided into two types: simple type and retractable type. The retractable type seat belt can freely adjust the wearing length of the seat belt and is sensitive to the movement of the car body or the acceleration of pulling out the webbing, which can effectively protect the driver in an emergency. Members and passengers, and thus the most widely used. The retractable seat belt is mainly composed of a retractor (including webbing) and buckle parts. At present, the safety belt retractor is generally composed of a webbing, a take-up shaft, a U-shaped frame, a coil spring, an inductive component (a vehicle sensor component and a belt sensor component) and a locking co...

AI Technical Summary

Problems solved by technology

Regardless of the structural form, it is more difficult to assemble

Also having such belt shaft holes 2, 2a on both side plates 1, 1a also reduces the strength of both side plates 1, 1a, so both side plates 1, 1a need to have thicker wall thickness, so that the retractor increase in volume

[0004] Also, the currently used safety belt retractors generally have a large volume, occupy a large space on the vehicle body, and involve many parts, which also increases the difficulty of the assembly process and the cost of parts.

In addition, in the process of use, due to structural design reasons, some seat belts cannot meet the increasingly stringent noise requirements of customers, and the comfort performance requirements of pulling out and retracting, etc. These problems are related to the structure of the U-shaped frame. design has a lot to do with

Images