Archimedes spiral plate spring

Abstract

The invention discloses an Archimedes spiral plate spring. The Archimedes spiral plate spring comprises a circular plate with a set base circle, and four vortex arms and four vortex grooves which arearranged on the plate around the base circle, and is characterized in that the four vortex grooves are symmetrically distributed at an angle of 90 degrees around the base circle; moulded lines of thevortex grooves are of closed structures; the central line of the moulded lines of the vortex grooves is determined by an Archimedes spiral equation, namely, r=a+b theta, wherein a and b are constants;a is used for regulating vortex line pole deviating distance; b is used for regulating moulded line expanding speed; r is a polar diameter; and theta is a polar angle. According to the Archimedes spiral plate spring, a novel Archimedes spiral line is constructed, the vortex grooves are distributed symmetrically, closed ends are of smooth transition, and the stress is dispersed by utilizing two arms of the plate spring, so that the stress is distributed on spring arms more uniformly; the spring reliability is improved; the radial rigidity is high and the axial rigidity is proper; and the moulded lines of the Archimedes spiral plate spring are easy to express and design, and are easy to machine.

Description

technical field [0001] The invention relates to a leaf spring, in particular to an Archimedes spiral leaf spring, which is especially suitable for linear compressors. Background technique [0002] The leaf spring is to construct a set of vortex grooves with appropriate geometric dimensions on the circular elastic sheet material with a hole in the center to form a vibrating elastic arm, so that the sheet material has certain axial stiffness and radial stiffness. . It is generally used to support the compression piston and expansion piston in the cylinder. It can not only maintain the sealing gap between the piston and the cylinder during the movement process, but also adjust the phase difference between the compression piston and the expansion piston to provide sufficient stiffness and a certain stroke for the reciprocating vibration of the piston. , are widely used in acoustic refrigerators and acoustic generators that use linear motors as electromechanical conversion devic...

AI Technical Summary

Problems solved by technology

The scroll groove sealing method of this invention uses arc transition, but the design method is complicated and the sealing line is biased to one side, its axial stiffness and radial stiffness are insufficient, and it is not convenient for machining; there is also a Chinese patent 201420814666.6 which discloses a leaf spring , which has two elastic arms, and the profile is formed by several pairs of concentric arcs or eccentric arcs. The radius of the two arcs gradually increases from the inside to the outside, and their centers are on the same straight line.

The disadvantage of the leaf spring is that the profile is composed of multiple concentric arcs and eccentric arcs, and the tangential transition between the arcs must be ensured, so the expression and design of the profile are complex and difficult to machine.

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