CN203596484U

CN203596484U - Copper shell for end-face commutator

Info

Publication number: CN203596484U
Application number: CN201320777323.2U
Authority: CN
Inventors: 陈辉; 陈林
Original assignee: Angu Group Co Ltd
Current assignee: Angu Group Co Ltd
Priority date: 2013-12-02
Filing date: 2013-12-02
Publication date: 2014-05-14
Anticipated expiration: 2023-12-02

Abstract

The utility model discloses a copper shell for an end-face commutator. The copper shell is formed by punching and bending of a copper plate, and is characterized in that in an unfolded state before bending, the copper shell for the end-face commutator includes a circular cover plate, a plurality of hooked bodies of the same shape are uniformly distributed on the outer circumference of the circular cover plate, the roots of the hooked bodies are connected in a nearly tangential direction to the outer circumference of the circular cover plate, and a plurality of rectangular teeth of the same shape are uniformly distributed in the central inner hole of the circular cover plate; and in a molding state after bending of the copper shell for the end-face commutator, the hooked bodies are bent upward for 90 degrees relative to the circular cover plate and then bent inward for 90 degrees, hooks of the hooked bodies are bent inward, inner sides of the roots form inner bending after the roots of the hooked bodies are bent inward, and outer bending is formed after the rectangular teeth are bent upward relative to the circular cover plate. The copper shell for the end-face commutator is simple in structure and easy to manufacture; and the end-face commutator manufactured by use of the copper shell has a small radial size and is conducive to installation and usage.

Description

End commutator copper shell

Technical field

The utility model relates to a kind of end commutator, is specifically related to a kind of copper shell of end commutator.

Background technology

The end commutator using on electric tool, motor at present, its bonding wire crotch is conventionally in the arranged outside of commutator cylindrical, and commutator products radial size is larger, is not suitable on some electric tools that radially installing space is less or motor, installing and using.So our company has developed the novel end commutator that a kind of radial dimension is little, designed a kind of end commutator copper shell that above-mentioned novel end commutator is made that is exclusively used in simultaneously.

Summary of the invention

The utility model provides a kind of end commutator copper shell, simple in structure, easy to make, the end commutator of making of the utility model, and radial dimension is little, is conducive to install and use.

The utility model takes following technical scheme to complete:

End commutator copper shell, after, bending die-cut by copper sheet material, form, it is characterized in that: the deployed condition of end commutator copper shell before bending, comprise circular cover, the hook-shape body of the uniform multiple same shapes of excircle of circular cover, the root of hook-shape body is connected in the excircle of circular cover with nearly tangential direction, the rectangular gear of the uniform multiple same shapes of central inner hole of circular cover; The completed state of end commutator copper shell after bending, the upwards 90 degree inside 90 degree bendings again after bending of the relative circular cover of hook-shape body, inwardly, after the root of hook-shape body bends inwards, its inner side edge forms interior bending to the crotch of hook-shape body, and the relative circular cover of rectangular gear upwards bends the outer bending of rear formation.

The end commutator copper shell of technique scheme, its commutation end face, bonding wire crotch and inside and outside bending is die-cut by copper sheet material, directly form after bending, simple in structure, easy to make, wherein, commutation end face is the lower surface of circular cover, bonding wire crotch is the crotch part of hook-shape body, and the effect of inside and outside bending is: in the time of commutator injection mo(u)lding, copper shell is combined more firmly with matrix, guarantees commutator product mechanical strength.The end commutator of making of the utility model, because bonding wire crotch is positioned at the upper surface side of commutator cylindrical body, and crotch inwardly, so the radial dimension of commutator product is little, be conducive on some electric tools that radially installing space is less or motor, install and use.

Accompanying drawing explanation

Fig. 1 is the deployed condition of end commutator copper shell before bending;

Fig. 2 is the completed state of end commutator copper shell after bending;

Fig. 3 is the A-A view of Fig. 2.

Embodiment

As shown in the figure, end commutator copper shell of the present utility model, after, bending die-cut by copper sheet material, form, the deployed condition (Fig. 1 shown in) of end commutator copper shell before die-cut rear bending, comprise circular cover 1, the hook-shape body 2 of uniform 20 same shapes of excircle of circular cover 1, the top of hook-shape body is crotch 2a, the root 2b of hook-shape body is connected in the excircle of circular cover 1 with nearly tangential direction, the rectangular gear 3 of uniform 20 same shapes of central inner hole of circular cover 1; The completed state (Fig. 2,3 shown in) of end commutator copper shell after bending, the upwards 90 degree inside 90 degree bendings again after bending of the relative circular cover 1 of hook-shape body 2, the crotch 2a of hook-shape body inwardly, after the root 2b of hook-shape body bends inwards, its inner side edge 4 forms interior bending, and the relative circular cover of rectangular gear 3 upwards forms outer bending after 111o bending.

Claims

1. end commutator copper shell, after, bending die-cut by copper sheet material, form, it is characterized in that: the deployed condition of end commutator copper shell before bending, comprise circular cover, the hook-shape body of the uniform multiple same shapes of excircle of circular cover, the root of hook-shape body is connected in the excircle of circular cover with nearly tangential direction, the rectangular gear of the uniform multiple same shapes of central inner hole of circular cover; The completed state of end commutator copper shell after bending, the upwards 90 degree inside 90 degree bendings again after bending of the relative circular cover of hook-shape body, inwardly, after the root of hook-shape body bends inwards, its inner side edge forms interior bending to the crotch of hook-shape body, and the relative circular cover of rectangular gear upwards bends the outer bending of rear formation.