High-strength commutator

Abstract

The invention discloses a high-strength commutator. The high-strength commutator comprises commutation copper sheets evenly distributed on the outer circumstance of a commutator body, the commutation copper sheets and the commutator body are formed together in a pressure injection mode, the inner side face of each commutation copper sheet is provided with sheet feet, and the sheet feet are embedded in the commutator body and firmly combined with the commutator body. The high-strength commutator is characterized in that the corresponding sheet feet are arranged in the height direction of each commutation copper sheet in an upper and lower mode, and the sheet feet between every two adjacent commutation copper sheets are staggered in the height direction of the commutation copper sheets and do not interfere with one another . Due to the fact that the sheet feet between every two adjacent commutation copper sheets are staggered in the height direction, a larger space is reserved around each sheet foot and used for being filled with commutator body materials, and meanwhile the width of the head of each sheet foot can be enlarged; thus, the bonding strength between the commutation copper sheets and the commutator body is enhanced, the commutator body is stable in structure, mechanical properties of the commutator is effectively improved, and the commutator is high in strength.

Description

【Technical field】 [0001] The invention relates to an improved invention of a commutator product. 【Background technique】 [0002] The commutator is widely used in motors and electric tools. The basic structure of the commutator is as follows: Commutator copper sheets are evenly arranged on the outer circumference of the commutator body. The commutator copper sheets are connected with the commutator body. Injection molded together, the commutator copper sheet is provided with a piece of foot implanted in the commutator body and firmly combined with the commutator body. In order for commutator products to meet high strength requirements, it is generally achieved by strengthening the bonding strength between the commutator copper sheet and the commutator body and improving the mechanical properties of the product. In order to strengthen the bonding strength between the commutator copper sheet and the commutator body, and improve the mechanical properties of the commutator produ...

AI Technical Summary

Problems solved by technology

However, increasing the width of the head of the blade foot will bring the following adverse effects: First, the space around the blade foot for filling the material of the commutator body will be reduced, which will easily lead to the instability of the structure of the commutator body; The distance between the heads of the feet will be too small. Even if there is no direct interference, there will be indirect interference when the commutator copper sheet and the commutator body are pressed together and contacted, resulting in a high scrap rate of the commutator product. no less

Images