Combined waterproof cover and motor

Abstract

The invention provides a combined waterproof cover for motor shaft end sealing and a motor, and relates to the technical field of motors, the combined waterproof cover comprises a waterproof ring, aninner waterproof cover and an outer waterproof cover, and the waterproof ring is arranged on the outer wall of a rotating shaft along the circumferential direction of the rotating shaft and rotates along with the rotation of the rotating shaft; one end of the inner waterproof cover is in clearance fit with the peripheral surface of the rotating shaft, the other end is matched with the outer wall surface of the waterproof boss and covers between the rotating shaft and the waterproof boss, a mounting hole for the rotating shaft to penetrate through is formed in the end in clearance fit with theperipheral surface of the rotating shaft, and the inner waterproof cover does not rotate along with rotation of the rotating shaft; the outer waterproof cover covers the inner waterproof cover, one end is in sealing fit with the waterproof ring, the other end is in sealing fit with the inner waterproof cover, and the outer waterproof cover can rotate along with rotation of the rotating shaft; staggered convex ribs are formed in a gap between the inner waterproof cover and the outer waterproof cover, and the staggered convex ribs form a labyrinth type waterproof structure. The sealing performance of the sealing structure of the motor output shaft end is effectively improved, and the output performance of the motor is not affected.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a combined waterproof cover and a motor. Background technique [0002] In order to achieve the required level of protection, the motor will be designed with a waterproof and dustproof sealing structure, especially the shaft end of the motor, and the sealing structure of the rotating shaft has always been a key point in the design of the motor's protection level. [0003] The sealing structure is divided into a contact sealing structure and a non-contact sealing structure according to the contact relationship between the seal and the part. In the sealing structure of the motor shaft, contact seals include felt and oil seals. Although the waterproof level can reach IPX5 and above and the effect is reliable, the contact shaft of the seal will increase the resistance of the motor and affect the torque of the motor. Its output speed, power Both are affected, increasing costs; non-cont...

AI Technical Summary

Problems solved by technology

In the sealing structure of the motor shaft, contact seals include felt and oil seals. Although the waterproof level can reach IPX5 and above and the effect is reliable, the contact shaft of the seal will increase the resistance of the motor and affect the torque of the motor. Its output speed, power Both are affected, increasing costs; non-contact seals generally use waterproof covers, horizontal ones usually use hard waterproof covers with drip holes installed on the end caps, vertical ones use soft waterproof covers installed on the shaft, and the cost is low And it has no effect on the output of the motor, but the protection effect is limited. Generally, it can reach IP44, but it cannot prevent dust and water spray.

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