Torsion beam limiting block structure and limiting system

Abstract

The invention discloses a torsion beam limiting block structure, which comprises a non-metal base and a limiting block body, wherein the upper end of the non-metal base is provided with an annular mounting part; a mounting groove is formed in the side wall of the inner periphery of the mounting part; a plurality of outer vertical strips distributed in the circumferential direction are arranged onthe outer periphery of the lower end of the mounting part; the outer vertical strips extend downwards to the bottom of the non-metal base in the axial direction of the non-metal base; every two adjacent outer vertical strips are connected through an outer circumferential reinforcing rib extending in the circumferential direction; the bottom of the non-metal base is mounted on a torsion beam; and the limiting block body is mounted in the mounting groove and used for limiting the upward stroke of the torsion beam. The structure can effectively avoid the abnormal sound risk of the complete vehicle and improve the driving experience of a user. The invention further discloses a limiting system, which comprises the torsion beam limiting block structure mounted on the torsion beam and a shock absorber limiting block mounted on a rear suspension, and the limiting requirement of an automobile or an electric vehicle with large axle load can be met.

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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