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Motor casing for electric bicycle and manufacturing method thereof

A technology for electric bicycles and motor casings, which is applied in the direction of manufacturing motor generators, electric components, casings/covers/supports, etc. It can solve the problems of affecting the output power of the motor, affecting the yield of castings, and increasing the manufacturing cost. Significant progress, obvious substantive features, and the effect of ensuring product quality

Inactive Publication Date: 2008-08-20
蒋俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The motor casing of this kind of steel casting is heavy and consumes a lot of energy, especially because of the quality problems such as shrinkage cavities and pores, which not only affect the yield of the casting, but also increase the manufacturing cost, and because of the poor compactness of the casting , affecting the output power of the motor

Method used

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  • Motor casing for electric bicycle and manufacturing method thereof
  • Motor casing for electric bicycle and manufacturing method thereof
  • Motor casing for electric bicycle and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0040] One of the specific implementation modes, as attached figure 1 , 2 shown. An electric bicycle motor shell, comprising a cylindrical shell 1; on the outer circle at both ends of the shell 1 there are protruding steps 2 along the circumferential direction, and next to the protruding steps 2 are arranged parallel to each other for The first flange 3 and the second flange 4 for fastening the spokes, the first flange 3 and the second flange 4 are respectively provided with several spoke fastening holes 5, and the two ends of the housing 1 are respectively provided with There are screw holes 6 corresponding to the screw holes of the motor end cover, and the housing 1 is in the form of a circular butt joint structure of rolled profiles with a protruding step 2, a first flange 3 and a second flange 4; the butt joint is a solder connection. The first flange 3 and the second flange 4 are each provided with 18 spoke fastening holes 5 of φ3.2 mm uniformly distributed along the c...

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Abstract

This invention discloses a case of a motor of an electric bike and its manufactured method including a case in a press-formed circle butt joint structure taking soldering as the main character having the advantages of reasonable structure, light, less production cost, tough crystal material and normal output power, which is the product substituting motor cases of steel-casting. The method includes taking a press-formed material as the blank and carrying out circles, welding, cold extrusion, drilling and tapping orderly.

Description

technical field [0001] The invention relates to an electric bicycle motor shell and a manufacturing method thereof, belonging to the electric bicycle manufacturing technology. Background technique [0002] Electric bicycles have been accepted by consumers in general, especially urban people, due to their non-emission pollution, light structure and moderate speed. [0003] The motor of an electric bicycle is a key component of an electric bicycle. Said motor is mounted on the rear axle. The motor casing is connected with the rear wheel rim through spoke steel wires. In the working state of electrification, the motor casing rotates to drive the electric bicycle. [0004] Existing electric bicycle motor housings are steel castings. The motor casing of this kind of steel casting is heavy and consumes a lot of energy, especially because of the quality problems such as shrinkage cavities and pores, which not only affect the yield of the casting, but also increase the manufactu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/04H02K15/14
Inventor 蒋俊
Owner 蒋俊
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