Eccentric wheel transmission device and diaphragm air pump comprising same

Abstract

The eccentric wheel transmission device comprises an eccentric wheel base body, a shaft sleeve, a balancing weight, a piston driving mechanism and an eccentric shaft, a motor shaft hole, a balancing weight hole and an eccentric hole are formed in the eccentric wheel base body, the balancing weight is embedded in the balancing weight hole, the shaft sleeve is embedded in the eccentric hole, an inclined shaft hole is formed in the shaft sleeve, and the piston driving mechanism is arranged in the shaft sleeve. The piston driving mechanism comprises a connecting rod plate and a piston column, one end of the eccentric shaft is connected with the connecting rod plate, and the other end is inserted into the eccentric shaft hole. The device rotates around the motor shaft hole, the inclined shaft hole drives the piston column connected to the eccentric shaft to swing, the diaphragm air pump comprises an air pump base, a leather cup frame, a leather cup set, an air pump lower cover and an air pump upper cover, the transmission device is installed in the air pump base and driven by the motor to rotate, the piston column moves up and down, and air intake and exhaust are achieved by compressing and stretching the leather cup. Long-service-life operation of the eccentric wheel is achieved through dynamic balance, the eccentric distance and the inclined shaft hole angle can be changed by replacing the shaft sleeve, machining is convenient, and stable self-lubrication of a transmission device is guaranteed.

Description

technical field [0001] The invention relates to the technical field of diaphragm air pumps, in particular to an eccentric gear transmission and a diaphragm air pump comprising the same. Background technique [0002] In order to realize the process of the piston pushing the diaphragm cylinder to inhale and exhaust, the existing diaphragm air pump basically uses the eccentric wheel mechanism, the traditional eccentric wheel structure, when in use, the motor output shaft is directly inserted into the motor shaft hole of the eccentric wheel for non-relative Rotation connection, the eccentric slant hole of the eccentric wheel is inserted into the eccentric shaft for flexible connection, the motor drives the eccentric wheel to rotate, and the eccentric wheel slant hole drives the eccentric shaft to achieve eccentric rotation, thereby realizing the swing of the piston crank rod, which is equivalent to realizing the reciprocating operation of the piston. [0003] However, in this tr...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide an eccentric wheel transmission device, which can solve the problems of inconvenient machining and machining errors in the eccentric wheel inclined hole in the prior art through the design of the inclined shaft hole for installing the eccentric shaft and the dynamic balance design, and ensure the eccentricity Smooth shaft and piston crank movement

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