High-strength groove type commutator

A commutator, high-strength technology, applied in the direction of current collectors, rotating current collectors, electrical components, etc., can solve the problems of commutator work influence, welding slag falling, etc.

Inactive Publication Date: 2021-08-31
浙江利丰电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to make up for the deficiencies in the prior art, the present invention proposes a high-strength grooved commutator. The present invention is mainly used to solve the problem that the welding slag may fall off when the welding wire groove of the existing commutator is performing welding of metal wires. Falling on the top end face of the reversing copper sheet causes welding slag contact between adjacent reversing copper sheets, and the welding slag contact will cause extremely adverse effects on the work of the commutator

Method used

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  • High-strength groove type commutator
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  • High-strength groove type commutator

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Embodiment approach

[0031]As an embodiment of the present invention, the upper and lower fixing feet 16 and 17 are provided with first through holes 161 that penetrate up and down, and the first through holes 161 in the upper fixing feet 16 and the lower fixing feet 17 in the same vertical plane. Through the setting of the first through hole 161, on the one hand, the material used for the upper fixing leg 16 and the lower fixing leg 17 can be reduced, and the cost can be reduced; Filling, after being formed, the upper end of the upper fixing foot 16 and the lower end of the lower fixing foot 17 can be connected to the material in the dovetail groove 18 from the inside of the upper fixing foot 16 and the lower fixing foot 17. direction movement, thereby improving the mechanical strength and overspeed performance of the slot commutator.

[0032] As an embodiment of the present invention, the upper fixing leg 16 and the lower fixing leg 17 are both provided with a plurality of second through holes ...

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Abstract

The invention belongs to the technical field of commutators, and particularly relates to a high-strength groove type commutator, which comprises commutation copper sheets, a plastic mold core and mica sheets, wherein the commutation copper sheets are uniformly distributed around the periphery of the plastic mold core, a gap exists between the adjacent commutation copper sheets to form an insulation gap, the mica sheets for separating the adjacent commutation copper sheets are arranged in the insulation gap, the upper end face of the mica sheet is higher than the upper end face of the commutation copper sheet and lower than the upper end face of the plastic mold core, and a semi-enclosed space higher than the commutation copper sheet is formed between the upper end of the mica sheet and the upper end of the plastic mold core; through the arrangement of the mica sheets, the mica sheets and the plastic mold core can form a semi-enclosed space higher than the commutation copper sheets, so that the contact between the adjacent side surfaces of the adjacent commutation copper sheets can be prevented, and the condition that the adjacent commutation copper sheets are in contact due to the existence of welding slag caused by the fact that the welding slag generated after wire welding of the wire welding grooves enters the upper ends of the commutation copper sheets can be reduced; therefore, the safety performance is ensured.

Description

technical field [0001] The invention belongs to the technical field of commutators, in particular to a high-strength slot-type commutator. Background technique [0002] The commutator is widely used in power tools. The commutator with welding steps is generally a slot type commutator. The top outer circle molding. [0003] When the existing commutator wire groove is performing welding of metal wires, welding slag may fall on the top end surface of the commutation copper sheet, so that welding slag contact occurs between adjacent commutator copper sheets, and the above-mentioned foreign matter contacts It will have extremely adverse effects on the work of the commutator. In addition, the existing slot-type commutator has fewer bonding points between the commutating copper sheet and the plastic matrix of the commutator, and the bonding force is not ideal, so it is difficult to better ensure the mechanical strength to improve the overspeed performance of the commutator . C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R39/04
CPCH01R39/04
Inventor 张余明
Owner 浙江利丰电器有限公司
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