Automobile seatbelt retractor

Abstract

The invention provides an automobile seatbelt retractor, and belongs to the technical field of automobile parts. The automobile seatbelt retractor solves the problems that a conventional seatbelt retractor of which the rewinding force is adjustable is large in retractor modification and complex in structure. The automobile seatbelt retractor comprises a retractor frame, a retractor mandrel, a locking claw, a coil spring base, a coil spring mandrel, a coil spring, a coil spring hood, a transmission mechanism, a motor and an electric control system, wherein the coil spring base is mounted on the lateral side of the retractor frame, the coil spring mandrel is mounted on the coil spring base and can freely rotate, the coil spring mandrel and the retractor mandrel are coaxially connected and linked, the inner end of the coil spring is mounted on the coil spring mandrel, the outer end of the coil spring is mounted on the inner side of the coil spring hood, the motor is connected to the outer side of the coil spring hood through the transmission mechanism and drives the coil spring hood to rotate, and the electric control system is electrically connected with the motor and controls the motor to rotate. The automobile seatbelt retractor can intelligently adjust the rewinding force of a coil spring of a seatbelt, so that the comfort use feed can be provided, and the automobile seatbelt retractor is simple in structure and low in cost.

Description

technical field [0001] The invention belongs to the technical field of automobile parts, and relates to an automobile safety belt retracting device. Background technique [0002] The seat belt retractor is one of the most important functional components in the seat belt system, and is the core of the seat belt system. The main function of an ordinary three-point seat belt retractor is to realize the seat belt sensor lock, belt sensor lock, webbing Functions such as rewinding, in which the rewinding function of the webbing is usually realized by the coil spring inside the retractor. By increasing the stiffness of the coil spring, the webbing rewinding force of the seat belt can be increased, making the webbing rewinding smoother, but The increase of the rewinding force often affects the wearing comfort of the occupant. After wearing the seat belt, the pressure force of the webbing on the occupant's shoulders and chest increases, which makes the occupant feel uncomfortable wea...

AI Technical Summary

Problems solved by technology

Although the above two schemes can solve the winding force when the safety belt is fastened, in the above schemes, two coil springs are used. The former requires the use of two coil springs with different elastic forces. The requirements of the latter are relatively high, and it needs to be matched, which is very cumbersome, the structure is also complicated, and the production cost is high; although the latter does not require the elasticity of the main and secondary coil springs to be different, it increases the clutch structure, the structure is more complicated, and the installation is inconvenient. higher cost

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