CN202712657U

CN202712657U - Through groove type commutator of motor

Info

Publication number: CN202712657U
Application number: CN 201220296750
Authority: CN
Inventors: 胡洪武
Original assignee: A BETTER ELECTRICAL MANUFACTURING (SHENZHEN) CO LTD
Current assignee: A BETTER ELECTRICAL MANUFACTURING (SHENZHEN) CO LTD
Priority date: 2012-06-25
Filing date: 2012-06-25
Publication date: 2013-01-30
Anticipated expiration: 2022-06-25

Abstract

The utility model discloses a through groove type commutator of a motor. The through groove type commutator comprises an electric generating coil. Copper sheets are uniformly arranged on the outer periphery of the electric generating coil in a separated manner. According to the utility model, the mica sheet between every two neighboring copper sheets is omitted, that is grooves of the copper sheets of the commutator are communicated. According to the motor in which the commutator is used, the ventilation performance is greatly improved, the carbon dust accumulated in the grooves of the commutator can be effectively taken away by the wind in the operation, and the advantage of obvious effect is realized especially when the commutator is used in the motor in an hair drier or the motor in a vacuum cleaner. Thus, the service life and the production efficiency of the motor can be effectively improved, and the production cost is reduced.

Description

The groove formula commutator of motor

Technical field

The utility model relates to electrical micro-machine and makes the field, relates in particular to a kind of commutator of motor.

Background technology

The commutator of existing motor on the market, such as Fig. 1 ~ shown in Figure 4, by copper sheet 1, mica sheet 2 and the goddess of lightning enclose 3 and consist of.For the copper sheet of separating adjacent and the needs of manufacture craft, and adopt mica sheet, mica sheet also can be filled out the groove of commutator in the hook portion of copper sheet simultaneously.After the commutator of this structure was made motor, the carbon brush powder because the wearing and tearing of carbon brush bring will be adsorbed on the mica sheet, thereby cause short circuit slight between the copper sheet of commutator, can add like this carbon brush abrasion of speed motor, makes motor not reach designed life.

How to overcome the accelerated wear test of carbon brush for electric machine, and so that motor does not reach the defective of designed life, be the industry problem demanding prompt solution.

Summary of the invention

The utility model is for the accelerated wear test of the carbon brush that solves existing motor, and so that motor does not reach the technical problem of designed life, proposes that a kind of production efficiency is high, cost of labor low and the groove formula commutator of the motor that electrical machinery life is long.

The groove formula commutator of a kind of motor that the utility model proposes, it comprises that the goddess of lightning encloses, the cylindrical of this goddess of lightning's circle evenly is interval with copper sheet.

Saved mica sheet between the adjacent copper sheet of the utility model, namely the groove between the copper sheet of commutator leads to.Use the motor ventilation performance of this commutator greatly to improve, wind energy is taken away the carbon dust that gathers in the commutator groove effectively during work, the motor in hair dryer and the dust catcher, and effect is more obvious.Therefore, can effectively improve life-span of motor and make efficiency, reduction cost of manufacture.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described further:

Fig. 1 is the front view of existing engine commutator;

Fig. 2 is the cutaway view of Fig. 1;

Fig. 3 be among Fig. 1 A-A to cutaway view;

Fig. 4 is the enlarged drawing at C place among Fig. 3;

Fig. 5 is the front view of preferred embodiment of the present utility model;

Fig. 6 is the cutaway view of Fig. 5;

Fig. 7 be among Fig. 5 B-B to cutaway view;

Fig. 8 is the enlarged drawing at D place among Fig. 7.

Embodiment

Such as Fig. 5 ~ shown in Figure 8, be preferred embodiment of the present utility model, the groove formula commutator of described motor comprises that the goddess of lightning encloses 5, the cylindrical of this goddess of lightning's circle evenly is interval with copper sheet 6.All be that bakelite links to each other between adjacent copper sheet, saved mica sheet between the adjacent copper sheet, namely the groove 7 between the copper sheet 6 of commutator leads to.Because after intercepting without mica, the degree of depth of groove can be done deeper and morely, the size of commutator can be done littlely.Use the motor ventilation performance of this commutator greatly to improve, wind energy is taken away the carbon dust that gathers in the commutator groove effectively during work, the motor in hair dryer and the dust catcher, and effect is more obvious.Therefore, this practicality can improve life-span of motor and make efficiency, reduction cost of manufacture effectively.

Abovely in conjunction with better embodiment the utility model is specifically described, but those skilled in the art can make numerous variations or variation to these execution modes these changes and changing within the scope that should fall into the utility model protection.

Claims

1. the groove formula commutator of a motor comprises that the goddess of lightning encloses (5), it is characterized in that, the cylindrical of described goddess of lightning's circle evenly is interval with copper sheet (6).