Bulb structure and steering system of steering pull rod

Abstract

The invention discloses a bulb structure and steering system of a steering pull rod. The bulb structure comprises a bulb pin (1), a joint part (4), a base (5) and an elastic supporting base (6), wherein the a limit accommodating cavity for accommodating a bulb is arranged in the joint part, and a pin rod stretches out towards one side of the joint part from the bulb; the base is mounted on the bottom wall of the other side opposite to the side from which the pin rod stretches out, of the joint part; the elastic supporting base is positioned in the limit accommodating cavity and mounted on the base so as to support the bulb, the elastic supporting base is an integrated annular elastic piece, and the annular elastic piece comprises an inner ring part (61) and outer ring parts (62), wherein the bottom end of the inner ring part and the bottom ends of the outer ring parts are respectively arranged on the base in a supporting manner, the bottom end of the bulb is inserted in the inner ring part and is elastically propped against the inner wall of the inner ring part. The bulb structure disclosed by the invention has the advantages that the components are few, the assembled structure is simple, the elastic supporting base and the base are unlikely to deform and lose efficacy, and the large-scale manufacturing, maintenance and replacement are convenient to perform.

Description

Technical field [0001] The invention relates to an automobile steering system, in particular to a ball joint structure of a steering rod. Background technique [0002] With the rapid development of the automotive industry and the improvement of technology, people have higher and higher requirements for the operational performance of automobiles. Therefore, for the automotive steering system, it is necessary to continuously improve its structural reliability and handling performance. As a key transmission component of the automobile steering system, the structural reliability of the steering tie rod and its ball pin is very important. [0003] The ball head structure of the steering rod in the prior art can be roughly divided into two types: spring type and rubber type. The spring-type structure of the steering tie rod ball head is generally composed of joints, ball pins, upper ball seats, lower ball seats, springs and bottom plates. There are many types of parts, many assembly pro...

AI Technical Summary

Problems solved by technology

The rubber structure requires relatively high rubber properties, for example, the attached patent CN103640624A figure 1 The rubber ball seat 3 shown in the figure has extremely high manufacturing process requirements. The domestic process can only meet the performance requirements of light-duty cars at present, and light trucks and heavy-duty trucks are still unable to meet the requirements.

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