Stable shock absorber of automobile

Abstract

The invention belongs to the technical field of automobile parts, and particularly relates to a stable shock absorber of an automobile. The stable shock absorber comprises a buffer rod and a buffer sleeve arranged outside the bottom side of the buffer rod in a sleeving mode. A rod body of the buffer rod is of a screw rod structure, and a screw rod sleeve matched with the screw rod structure of the buffer rod is arranged in the buffer sleeve. Threaded grooves are formed in the screw rod sleeve, and a plurality of balls are arranged in the threaded grooves. The screw rod sleeve divides the interior of the buffer sleeve into an upper independent buffer cavity and a lower independent buffer cavity, the buffer cavities are filled with hydraulic oil, and a balancing channel is formed in the screw rod sleeve and enables the upper buffer cavity and the lower buffer cavity to be communicated so as to balance the oil pressure. The part, corresponding to the top end of the buffer sleeve, of the rod body of the buffer rod is sleeved with a first buffer spring, and the part, corresponding to the lower buffer cavity of the screw rod sleeve, of the rod body of the buffer rod is sleeved with a second buffer spring. A sealing part for sealing is further arranged at the top end of the buffer sleeve, and a connecting part movably connected with the buffer rod is arranged at the top end of the buffer rod. The buffer movement is stable, deviation and skewing in the radial direction are avoided, abrasion is avoided, shock absorption is stable, and the buffering effect is good.

Description

technical field [0001] The invention belongs to the technical field of automobile parts, and in particular relates to a smooth shock absorber for automobiles. Background technique [0002] Shock absorbers are widely used in the automotive field, and are installed in multiple structures of the car to attenuate the vibration during the running of the car, such as the shock absorber in the car suspension system. Generally, a shock absorber is respectively arranged in the suspension system inside the four wheels of the automobile. The shock absorber in the prior art includes a shock absorber body, a piston rod, a dust cover outside the piston rod, and a movable end of the piston rod. It is slidingly connected with the shock absorber body. When the shock absorber transmits vibration, the piston rod reciprocates in the shock absorber body. The cavity in the shock absorber body is filled with a liquid with a high viscosity or is provided with a spring. The damping force between th...

AI Technical Summary

Problems solved by technology

Generally, a shock absorber is respectively arranged in the suspension system inside the four wheels of the automobile. The shock absorber in the prior art includes a shock absorber body, a piston rod, a dust cover outside the piston rod, and a movable end of the piston rod. It is slidingly connected with the shock absorber body. When the shock absorber transmits vibration, the piston rod reciprocates in the shock absorber body. The cavity in the shock absorber body is filled with a liquid with a high viscosity or is provided with a spring. The damping force between the shock absorber body or the elastic force of the spring makes the movement range of the piston rod smaller than the vibration range received by it, thus making the vibration range transmitted by the shock absorber smaller than the vibration range received by it, thereby The shock absorption effect, but during the use of the shock absorber, the piston rod not only has an axial reciprocating movement, but also a radial offset movement. The shock absorber body produces eccentric wear, causing wear, and the dust cover outside the piston rod will contact the outer surface of the shock absorber body, making it easy to rust

In order to solve the above technical problems, the technical solution adopted in the prior art is to set an axial guide mechanism between the piston rod and the shock absorber body. The axial guide mechanism has a complex structure, is not easy to process, and its matching accuracy is difficult. Guaranteed, and after a long time of use, the guide mechanism is easy to dislocate, causing wear between the piston rod and the shock absorber body, resulting in a reduction in service life

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