Washing machine DC motor outer rotor
A DC motor and outer rotor technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve problems such as unreasonable structural design, broken permanent magnets, etc., to reduce rigid connections, reduce injection stress, Avoid broken effects
Active Publication Date: 2016-06-08
张家港倍恩特磁塑科技有限公司
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Problems solved by technology
[0002] The outer rotor of the washing machine DC motor is made of yoke and PBT plastic injection molding. Due to the unreasonable structural design, it is easy to cause a large number of permanent magnets to be broken due to the internal stress of injection molding during injection molding.
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Embodiment Construction
[0013] The outer rotor of the DC motor of the washing machine according to the present invention will be further described in detail through specific embodiments below.
[0014] Such as figure 1 , figure 2 , image 3 As shown, the outer rotor of the DC motor of the washing machine includes a circular plastic body 1 and permanent magnets 2 arranged in the plastic body 1. The permanent magnets 2 are evenly distributed along the ring direction and form a ring in the plastic body 1. Positioning holes 3 are provided between adjacent permanent magnets 2, and concentric ribs 4 centered on the center of the plastic body 1 and radial ribs 5 centered on the center of the plastic body 1 are provided in the plastic body 1. The setting of the positioning hole 3 can reduce the rigid connection between the permanent magnet 2 and the plastic body 1 , thereby reducing the injection molding stress between the permanent magnet 2 and the plastic body 1 during injection molding, and is not easy...
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The invention relates to an external rotor of a direct current motor of a washing machine. The external rotor comprises a circular plastic body and permanent magnets arranged in the plastic body. The permanent magnets are annually and evenly distributed, a circular ring is formed in the plastic body, a locating hole is formed between every two adjacent permanent magnets, and a concentric circular rib with the center of the plastic body serving as the center of a circle and radiation ribs with the center of the plastic body serving as the center are arranged in the plastic body. According to the external rotor of the direct current motor of the washing machine, the locating holes are formed between the adjacent permanent magnets and rigid connection between the permanent magnets and the plastic body can be reduced, so that the injection molding stress between the permanent magnets and the plastic body is reduced in the process of injection molding and breakage of the permanent magnets is not prone to occurrence.
Description
technical field [0001] The invention relates to the technical field of plastic magnetic rotors, in particular to an outer rotor of a DC motor of a washing machine. Background technique [0002] The outer rotor of the DC motor of the washing machine is made of yoke and PBT plastic injection molding. Due to the unreasonable structural design, it is easy to cause a large number of permanent magnets to be broken due to the internal stress of injection molding during injection molding. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an outer rotor of a DC motor of a washing machine which is not likely to cause permanent magnets to be broken due to injection molding internal stress. [0004] In order to solve the above-mentioned problems, the technical solution adopted by the present invention is: the outer rotor of the DC motor of the washing machine includes a circular plastic body and permanent magnets arranged in t...
Claims
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IPC IPC(8): H02K1/28
Inventor 胡必武
Owner 张家港倍恩特磁塑科技有限公司