Shell seat assembly type automobile spare tire lifter

Abstract

The invention discloses a shell seat assembly type automobile spare tire lifter which comprises a lifter outer shell, a worm and gear transmission mechanism and a spare tire connecting assembly, and the lifter outer shell is formed by connecting an upper shell cover and a lower box seat in a buckled and sealed mode; the two ends of the worm shaft are installed in a worm and gear lower cavity of the lower box base through rolling bearings. The upper part of the rolling bearing is correspondingly arranged in a worm shaft upper bearing seat which is correspondingly arranged in the worm and gear lower cavity; a worm shaft lower bearing seat mounting opening is formed in the lower box seat bottom plate corresponding to the worm shaft upper bearing seat, and the worm shaft lower bearing seat isinserted into the lower box seat from the worm shaft lower bearing seat mounting opening, is fixed and is in butt joint with the worm shaft upper bearing seat to form a worm shaft bearing; the belt winding wheel is located in a cavity of the spare wheel connecting assembly and coaxially connected to the worm wheel shaft. The structure of the automobile spare tire lifting mechanism is optimized, the structure is simpler, more compact and lighter, the number of parts is greatly reduced, and simple, accurate and rapid assembly of the lifter is achieved.

Description

technical field [0001] The invention belongs to the technical field of an automobile spare tire lifting mechanism, and in particular relates to a shell-seat-assembled automobile spare tire lifter. Background technique [0002] The car spare tire lifter is installed at the bottom of the car frame, connected with the spare tire, and controls the lifting mechanism of the spare tire. When the car needs to use the spare tire, the spare tire lifting mechanism lowers the spare tire hanging at the end; When the spare tire is used, the spare tire lifting mechanism will lift the spare tire and hang it on the bottom of the vehicle frame for the next use. [0003] In the prior art, the car spare tire lifting mechanism mostly adopts a planetary gear suspension chain structure or a worm gear suspension structure; wherein: [0004] The planetary gear hanging chain structure is an open transmission structure, no lubrication, large wear and tear, and it is easy to cause chain deformation, j...

AI Technical Summary

Problems solved by technology

[0004] The planetary gear hanging chain structure is an open transmission structure, no lubrication, large wear and tear, and it is easy to cause chain deformation, jamming and chain breakage;

[0005] The worm gear sling structure overcomes the technical defects of the planetary gear suspension chain structure. The transmission is light, the wear is small, the lifting is stable and reliable, and the failure rate is extremely low; The mechanism shell structure with lateral symmetrical installation adopted by the mechanism has problems such as a large number of parts, complex and difficult assembly process, high manual labor intensity and high manufacturing cost, which makes the operation skills of the assembly operators extremely high. Unstable assembly quality directly affects the stability and improvement of the output and quality of the whole machine

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