Automobile seat connecting rod mechanism with high endurance fatigue strength

Abstract

The invention belongs to the technical field of seat connecting rod mechanisms and especially relates to an automobile seat connecting rod mechanism with high endurance fatigue strength. The mechanismcomprises a right supporting plate, a left supporting plate, a first connecting rod, a second connecting rod and a connecting rod piece. Toothed plates are connected to the left side end and the right side end of the first connecting rod; the connecting rod piece internally comprises a first oil inlet groove, a first oil outlet groove, a first oil groove, a second oil inlet groove, a second oil outlet groove, a second oil groove, a first rivet groove and a second rivet groove. Oil in the oil groove can be pumped out through the oil outlet groove; centralized treatment of lubricating oil is convenient, recycling is achieved, both a first rivet and a second rivet adopt a quenching and tempering treatment process; first chemical plating layers are arranged on the surfaces of the first rivetand the second rivet; and the surface roughness of the first rivet and the second rivet is smaller than Ra0.8 micrometer, an ENP coating on the surface of the rivet is high in uniformity, bonding strength, abrasion resistance and corrosion resistance, the durability and a fatigue life of the rivet are improved, the service life of the connecting rod mechanism is prolonged, and meanwhile the wholemechanism is more stable and reliable in operation.

Description

technical field [0001] The invention relates to the technical field of seat linkage mechanisms, in particular to an automobile seat linkage mechanism with high endurance fatigue strength. Background technique [0002] The car seat is usually equipped with a high-profile mechanism to adjust the height of the seat. The high-profile mechanism includes a link mechanism. In the link mechanism of the car seat, the structure of the rivet + bush is mostly used to achieve lowering. The dynamic friction force is used to meet the motion requirements of the seat. The durability and fatigue resistance of the existing linkage mechanism parts are not ideal. After a long period of use, the bushing will be squeezed by the rivet and rotated. The phenomenon of being rubbed, squeezed and damaged by the rivet will eventually lead to the phenomenon of unsmooth movement and stagnation of the connecting rod mechanism, which will affect the normal use of the car seat. Contents of the invention ...

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Problems solved by technology

[0003] The object of the present invention is to provide a car seat linkage mechanism with high durability and fatigue strength to solve the problem that the durability and fatigue resistance of the parts proposed in the background technology are not ideal. After a long period of use, the bushing will be damaged. The extrusion and rotation friction of the rivet will cause the bushing to be squeezed and damaged by the friction of the rivet, which will eventually lead to the phenomenon of unsmooth movement and stagnation of the connecting rod mechanism, which will affect the normal use of the car seat.

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