Vibration absorption and de-noising improved structure of motor rotor

Abstract

The invention discloses a vibration absorption and de-noising improved structure of a motor rotor. The structure is arranged between two bearings in upper and lower rotor brackets and form a motor together with a stator; the structure comprises a rotor and a rotating shaft; the rotor is sleeved and fixed with the rotating shaft; one end of the rotating shaft passes through the end face of the bearing in the lower rotor bracket and is placed in the lower rotor bracket, and the other end of the rotating shaft passes through the end face of the bearing in the upper rotor bracket to form an output shaft; the vibration absorption and de-noising improved structure of the motor rotor also comprises a vibration absorption device; the vibration absorption device is arranged between the inner surface of a bottom support of the lower rotor bracket and the bearing in the lower rotor bracket, and comprises a retainer ring; and the retainer ring is sleeved on the rotating shaft, one side of the retainer ring is propped against the end face of the bearing, and the other side of the retainer ring is propped against the inner surface of the bottom support of the lower rotor bracket. The vibration absorption and de-noising improved structure of the motor rotor has low material consumption and low cost, is fast to install, can be well positioned and installed in one step, and simplifies the operation process during assembly.

Description

technical field [0001] The invention relates to a low-power or miniature induction motor, in particular to an improved structure for vibration reduction and noise reduction of the motor rotor. Background technique [0002] Motor, commonly known as "motor" (transliteration of motor), refers to an electromagnetic device that converts electrical energy into mechanical energy according to the law of electromagnetic induction. Generally, it includes stator winding, rotor, rotating shaft and bracket, and the stator is fixedly installed on the bracket, the rotor is installed in the stator and pivoted on the bracket, the stator winding is to wind the wire into a coil in a certain way, and the coil is energized to generate The induced electromotive force acts as a swirl electric field, and then generates torque on the rotor coil to drive the rotor to rotate. [0003] Generally, the rotor of the motor is directly sleeved on the rotating shaft, and the rotating shaft is directly pivot...

AI Technical Summary

Problems solved by technology

The vibration and noise reduction improved structure 100' of the motor rotor in the prior art is installed between the two bearings 201' in the upper and lower rotor brackets 200' and forms a motor with the stator (not shown), generally including the rotor 1' and the rotating shaft 2', the rotor 1' is socketed and fixed with the rotating shaft 2', the rotating shaft 2' is pivotally connected to the end face of the bearing 201' and one end passes through the end face of the bearing 201' to form an output shaft , in order to reduce vibration and noise, a vibration reduction device 3' is respectively installed at the pivot joints between the rotor and the two bearings 201' in the upper and lower rotor brackets 200' to absorb the axial vibration of the rotor to achieve the purpose of vibration reduction, This vibration damping device is usually a retaining ring, a rubber gasket or a felt gasket, etc. Although it can achieve a certain vibration damping effect, the improved structure 100' for vibration and noise reduction of the motor rotor in the prior art has the following deficiencies: 1. It is necessary to install vibration damping devices at the pivot joints between the rotor and the two bearings 201' in the upper and lower rotor brackets 200' to absorb the radial vibration of the rotor to achieve the purpose of vibration reduction. When installing, it is necessary to install It is difficult to control the vibration damping device between the rotor and the bearing 201' in the lower rotor bracket 200', and then install the vibration damping device between the rotor and the bearing 201' in the upper rotor bracket 200', which is not conducive to quick installation ; 2. Because it is necessary to install two damping devices to achieve the purpose of damping, waste of materials and high cost

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