Rotor, motor, water pump and vehicle

A rotor and rotor core technology, applied in the field of vehicles, can solve the problems of polluting the conveying liquid, corroding the rotor core, etc.

Pending Publication Date: 2021-06-25
ANHUI WELLING AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, if the existing motor rotor is operated in a liquid environment or an environment with high relative humidity, the liquid or moisture will pass through the gap between the outer casing (such as the overmolded body) and the rotating shaft to contact the rotor core, which will not only corrode the rotor Iron core, also contaminates the conveying liquid

Method used

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  • Rotor, motor, water pump and vehicle
  • Rotor, motor, water pump and vehicle
  • Rotor, motor, water pump and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] A rotor 100 (such as Figure 4 shown), including: a rotating shaft 1, a rotor core 2, and a plastic-coated body 46.

[0099] Specifically, the rotor core 2 is provided with a shaft hole 24 and a mounting slot 25 . The permanent magnet 5 is installed in the installation groove 25 . The overmolding body 46 is connected to the rotor core 2 and at least covers the opening end of the mounting slot 25 to encapsulate the permanent magnet 5 in the rotor core 2 .

[0100] Wherein, at least one end of the overmolding body 46 is provided with an axial extension, and the radially inner end of the axial extension is flush with the inner surface 23 of the rotor core 2 . The axial extension part can be the filling part 41 , the extension part 45 , or a combination of the filling part 41 and the extension part 45 or other ways.

[0101] By providing an axial extension 45 on at least one end of the overmolding body 46, and the radially inner end of the axial extension is flush with t...

Embodiment 2

[0121] On the basis of Embodiment 1, further, the inner surface 23 of the rotor core 2 is provided with at least one avoidance slot 22, such as figure 2 and image 3 shown. The escape slot 22 runs through at least one end surface of the rotor core 2 along the rotor axial direction.

[0122] In the prior art, when the rotating shaft 1 is interference-fitted with the shaft hole 24 , there is a problem that the rotating shaft 1 is easily bent when the rotating shaft 1 is installed into the rotor core 2 due to excessive pressing force. However, in the present application, an avoidance groove 22 is provided on the inner surface 23 of the rotor core 2, which can reduce the contact area between the rotor core 2 and the rotating shaft 1, thereby reducing the friction between the rotating shaft 1 and the rotor core 2 during assembly, that is, reducing the pressure. The frictional force received when the rotating shaft 1 is inserted is beneficial to assembly, thereby preventing the r...

Embodiment 3

[0144] The difference from Embodiment 1 or Embodiment 2 is that: the axial extension part includes an extension part 45, such as Figure 10 shown. The extension part 45 is provided on the end surface of the overmolding body 46 and extends in a direction away from the rotor core 2 along the axial direction of the rotor.

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Abstract

The invention provides a rotor, a motor, a water pump and a vehicle. The rotor comprises a rotor iron core, permanent magnets and a plastic coating body; a shaft hole for accommodating a rotating shaft and mounting grooves for mounting the permanent magnets are formed in the rotor iron core; the permanent magnets are mounted in the mounting grooves; the plastic coating body is connected with the rotor iron core and at least covers the opening ends of the mounting grooves so as to package the permanent magnets in the rotor iron core; and at least one end of the plastic coating body is provided with an axial extension part, and the radial inner end of the axial extension part is flush with the inner side surface of the rotor iron core. According to the rotor provided by the invention, the axial extension part is arranged, so that the axial distance between the rotor iron core and external gas or liquid is increased, the external gas or liquid can be effectively prevented from being in contact with the rotor iron core and even entering the rotor iron core through a gap between the shell and the rotating shaft, the rotor iron core is prevented from being corroded, a rust-proof effect can be realized, and meanwhile, liquid pollution can be prevented.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular, to a rotor, a motor including the rotor, a water pump including the motor, and a vehicle including the water pump. Background technique [0002] At present, if the existing motor rotor is operated in a liquid environment or an environment with high relative humidity, the liquid or moisture will pass through the gap between the outer casing (such as the overmolded body) and the rotating shaft to contact the rotor core, which will not only corrode the rotor The iron core will also contaminate the conveying liquid. Contents of the invention [0003] In order to solve at least one of the above technical problems, a first object of the present invention is to provide a rotor. [0004] A second object of the present invention is to provide a motor comprising the above-mentioned rotor. [0005] A third object of the present invention is to provide a water pump including the abo...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K1/28H02K5/04H02K5/10F04D13/06
CPCF04D13/06H02K1/2706H02K1/28H02K5/04H02K5/10H02K2213/03
Inventor 葛笑赵中森付威徐浩扬
Owner ANHUI WELLING AUTO PARTS CO LTD
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