Torsion beam limit block structure and limit system

Abstract

The invention discloses a torsion beam limiting block structure, which comprises: a non-metallic base, an annular installation part is arranged on the upper end, an installation groove is arranged on the inner peripheral side wall of the installation part, and an outer peripheral edge of the lower end of the installation part is provided with There are a plurality of outer vertical bars distributed along the circumferential direction, and the outer vertical bars extend downward to the bottom of the non-metallic base along the axial direction of the non-metallic base, and pass between two adjacent outer vertical bars The outer circumference reinforcing rib extending along the circumferential direction is connected, the bottom of the non-metallic base is installed on the torsion beam, and the limit block body is installed in the installation groove, which is used to limit the upper stroke of the torsion beam. This structure can effectively Avoid the risk of abnormal sound of the whole vehicle and improve the driving experience of users; the invention also discloses a limit system, which includes the above-mentioned torsion beam limit block structure installed on the torsion beam and the shock absorber limit block installed on the rear suspension. The block can meet the limit requirements of cars or electric vehicles with large axle loads.

Description

technical field [0001] The invention relates to the technical field of automobile suspension, in particular to a torsion beam limiting block structure and a limiting system. Background technique [0002] With the rapid development of my country's automobile market, the penetration rate of automobiles is getting higher and higher, and users' awareness of automobile safety is getting deeper and deeper, and they are paying more and more attention to the safety of automobiles. The limit block is an important part of the suspension system of the car, which directly determines the suspension travel, and affects the vehicle handling stability and ride comfort. Therefore, in addition to the spring performance of the shock absorber, the reliability of the suspension limit block is also more and more valued by users. Various types of suspension limit blocks came into being. [0003] The limit blocks of the torsion beam suspension are usually assembled on the oil storage tank of the ...

AI Technical Summary

Problems solved by technology

At present, there are torsion beam limit blocks fixed by buckles on the market, and rubber liners need to be installed under the base to increase the pre-tightening force to ensure that the buckle connection does not loosen, and the rubber liners are prone to wear and tear as the driving mileage increases. The buckle of the limit block is loose and causes abnormal noise; if the user's driving conditions are relatively bad, the buckle of the limit block that is frequently hit is more likely to be damaged, causing the limit block to loosen, make abnormal noise or even fall off

If the limit block is loose and abnormal, users will easily perceive it and complain and affect the reputation of the vehicle product; once the limit block falls off, there will be interference between the wheel tire and the wheel cover, and interference between the torsion beam and the body, which will affect users. Normal driving

Another kind of limit block fixed on the bottom of the vehicle body is relatively inconvenient to assemble, and when the limit block is pressed in the metal base, it is easy to produce abnormal extrusion noise due to friction

During the work, the inventor found that there is often a risk of abnormal noise when rubber or polyurethane material parts rub against metal parts, and the abnormal sound can be clearly perceived in the car, especially for electric vehicles with relatively good NVH, which are more likely to be noticed by users. perceived

Moreover, this kind of limit block has high requirements on the strength of the vehicle body where its base is installed, and is also not suitable for gasoline vehicles or electric vehicles with large axle loads.

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