Leaf spring structure assembly and torsion beam suspension structure thereof

Abstract

The invention discloses a leaf spring structure assembly and a torsion beam suspension structure thereof. The leaf spring structure assembly comprises a leaf spring body; the leaf spring body is formed by bending a leaf spring for multiple times in the length direction; bending positions are in an arc shape; connecting bolts are arranged at the two ends of the leaf spring body; and a damping buffer block is arranged in each bending layer of the leaf spring body, so that a good buffering and damping effect can be provided, and the leaf spring body can provide stretching and compression limiting. According to the torsion beam suspension structure adopting the leaf spring structure assembly, due to the fact that the elastic element has a limiting function, a stretching limiting block and a compression limiting block structure of a shock absorber assembly can be omitted; the structure of a rear shock absorber is simpler; the quality stability of the rear shock absorber is improved; the connecting bolts on the leaf spring body penetrate through bolt mounting holes of a spring plate, and then the fixing nuts are used for direct fixed connection, so that the part integration level is high; the mounting time consumption is low; the connection stress surface is large; and the leaf spring body is not easy to damage.

Description

technical field [0001] The invention relates to the field of vehicle door assembly, in particular to a leaf spring structure assembly and a torsion beam suspension structure thereof. Background technique [0002] Suspension is the general term for all force-transmitting connection devices between the frame or load-bearing body and or wheels of a car. Or the impact force of the car body, and reduce the vibration caused by it, so as to ensure the ride comfort and handling stability of the vehicle. [0003] A typical suspension structure includes elastic elements, guide mechanisms, shock absorbers, buffer blocks, stabilizer bars, etc. Among them, the elastic elements are in the form of leaf springs, air springs, coil springs, and torsion bar springs. Modern car suspensions mostly use coil springs, and some high-end cars use air springs. Suspension can be divided into independent suspension and non-independent suspension, such as figure 1 The coil spring torsion beam suspensi...

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Problems solved by technology

[0004] 1. The rear shock absorber assembly 13 is equipped with a special compression limit block and a tension limit block to limit the movement of the vehicle body, making the structure of the rear shock absorber assembly 13 complex;

[0005] 2. The production and assembly process of the coil spring 14 is relatively complicated, and a special spring coiling machine is required for production, and during final assembly, it is necessary to install the upper spring pad 15 and the lower spring pad 16, which are independent parts and need to be installed separately, which is time-consuming more;

[0006] 3. The coil spring 14 is in line contact with the upper spring pad 15 and the lower spring pad 16, and the contact area is small, resulting in a large local force, which may easily cause early damage to the upper spring pad 15 and the lower spring pad 16, resulting in abnormal noise , Misplacement and other issues;

[0007] 4. The coil spring 14 is made of spring steel metal material, which is heavy in weight, and the structural stiffness is fixed at a certain value, and the response to vibration is fixed, and it cannot be flexibly changed according to the size of vibration

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