Resilient pad

Abstract

The invention relates to a resilient pad. The resilient pad comprises an annular pad body, wherein the pad body is shaped like a circular truncated cone, the inner edge of the pad body is higher than the outer edge of the pad body, and the inner edge and the outer edge of the pad body are coaxial, a concave-convex corrugated edge is arranged on the side, near the inner edge, of the pad body and evenly arranged in the peripheral direction of the inner edge in a central symmetry mode, and the thickness of the pad body is uniform. The bottom edge of the circular truncated cone is formed at the outer edge of the pad body, the top edge of the circular truncated cone is formed at the inner edge of the pad body, when the pad body is squeezed, the inner edge of the pad body collapses and deforms towards the plane where the outer edge is located, and then elasticity is generated. As a continuous structure is formed on the whole periphery, uniform elasticity is kept on the whole periphery. The concave-convex corrugated edge is like a falbala or stringy selvedge, when the inner edge is squeezed, the corrugated edge can deform in the two directions, internal stress generated by deformation can be absorbed, the inner edge is not prone to fatigue, and the service life of a whole part is prolonged.

Description

technical field [0001] The invention relates to a washer, in particular to an elastic washer, and belongs to the technical field of fastener parts. Background technique [0002] When fixing parts with bolts, it is usually necessary to install a flat washer under the nut to increase the fastening contact area and prevent the surface of the part from being scratched when the nut rotates. Installing fasteners on equipment with vibration also requires the installation of spring washers for anti-loosening, and bolts can also loosen due to: wear of wearing parts, creep, thermal expansion, contraction, or compression of seals . Therefore, spring washers are widely used in load-bearing and non-load-bearing structures of general mechanical products. They are characterized by low cost, easy installation, and are suitable for parts that are frequently assembled and disassembled. [0003] The traditional spring washer is in the shape of a broken ring. When the nut is tightened, the sp...

AI Technical Summary

Problems solved by technology

However, the elastic force of the traditional spring washer is not large, the deformation at the fracture is the largest, and the elasticity is also the strongest. Use with nuts or similar parts and cannot be used with push-pull rods

[0004] GB / T 955-1987 stipulates the structure of the wave spring washer. Its outer edge is a flat ring, and its inner edge is provided with an arc-shaped elastic part. The contact area with the nut is relatively small, and the deformation is also small. The shape part can only be deformed in one direction, and the inner edge of the gasket is prone to stress fatigue

[0005] There is also an elastic gasket in the prior art, which is grooved at the deformed part to form a plurality of radial gaps in the circumferential direction, which is beneficial to the deformation of the elastic part, but greatly weakens the elastic force generated by the deformation

[0006] Existing disc springs or diaphragm springs can only generate elastic force in one direction, and cannot realize two-way conversion of elastic force

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