CN202150757U

CN202150757U - Motor possessing improved carbon brush

Info

Publication number: CN202150757U
Application number: CN201120262144U
Authority: CN
Inventors: 倪祖根
Original assignee: SUZHOU KINGCLEAN ELECTRIC CO Ltd
Current assignee: Jiangsu Kingclean Intelligent Appliance Co Ltd
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-02-22
Anticipated expiration: 2021-07-22

Abstract

The utility model discloses a motor possessing an improved carbon brush. The motor includes a carbon brush rack with carbon brush grooves, carbon brushes arranged in the carbon brush grooves, and a reversing ring which is in contact with the carbon brushes. The central axis of the carbon brush grooves has an angle [Alpha] with a horizontal axis of the carbon brush rack. The contact area of the carbon brush is large, the operation stability of the motor is high, and the noise and the electromagnetic interference of the motor are low, so the quality of a product is improved.

Description

Motor with modified form carbon brush

Technical field

the utility model relates to a kind of motor, particularly a kind of motor that is used on the automotive fan heater and has the modified form carbon brush.

Background technology

are shown in Fig. 1-2; The automobile warm-air motor comprises carbon brush holder 1 with carbon brush groove 6, is installed in carbon brush 2, the carbon brush cover plate 3 that is used for fixing carbon brush 2, brush holder spring 4 between carbon brush 2 and carbon brush cover plate 3 in the carbon brush groove 6 and the commutative ring 5 that contacts with carbon brush 2; Because the rotation of rotor, and the contact end face 22 of carbon brush 2 is symmetric shape, carries out vertical CONTACT WITH FRICTION with commutative ring 5; Its contact-making surface is too small and produce electric different sound even noise; Cause the different sound of automobile warm-air motor bad, even do not reach the electric motor of automobile criteria for noise, influence the quality of automobile warm-air motor thus.

Summary of the invention

the utility model purpose is: a kind of motor that can reduce noise and have the modified form carbon brush is provided.

The technical scheme of the utility model is: a kind of motor with modified form carbon brush; It comprises carbon brush holder with carbon brush groove, is installed in carbon brush in the carbon brush groove and the commutative ring that contact with carbon brush, wherein the crossing angle a that is of the horizontal axis of the central axis of carbon brush groove and carbon brush holder.

On the basis of technique scheme, further comprise following attached technical scheme:

said angle a is the 5-15 degree.

said carbon brush has a contact end face, and the relative carbon brush center line of this contact end face is asymmetric shape, and said carbon brush is the drift angle contact with contacting of commutative ring.

It further comprises carbon brush cover plate, the brush holder spring between carbon brush and carbon brush cover plate that is used for fixing carbon brush .

The utility model advantage is:

the utility model carbon brush contact area is big, and motor rotation stability is high, and the noise and the electromagnetic interference of motor are low, improve the quality of products thus.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the cross-sectional schematic of prior art;

Fig. 2 is the partial schematic diagram of carbon brush in the prior art;

Fig. 3 is the cross-sectional schematic of the utility model;

Fig. 4 is the partial schematic diagram of the utility model carbon brush.

wherein: 1,10, carbon brush holder; 2,20, carbon brush; 3,30, carbon brush cover plate; 4,40, brush holder spring; 5,50, commutative ring; 6,60, carbon brush groove; 22,200, contact end face.

Embodiment

embodiment: as shown in Figure 3; The utility model provides a kind of specific embodiment with motor of modified form carbon brush, comprises carbon brush holder 10 with carbon brush groove 60, is installed in carbon brush 20, the carbon brush cover plate 30 that is used for fixing carbon brush 20, brush holder spring 40 between carbon brush 20 and carbon brush cover plate 30 in the carbon brush groove 60 and the commutative ring 50 that contacts with carbon brush 20.Wherein there is angle a in the horizontal axis of the central axis of carbon brush groove 60 and carbon brush holder 10, and this angle a is preferably the 5-15 degree.

are as shown in Figure 4; Carbon brush 20 adopts the TRC3601S material; Wherein relative carbon brush 20 center lines of the contact end face of carbon brush 20 are asymmetric shape, and each carbon brush 20 makes the drift angle contact with the contact-making surface of commutative ring 50 into by vertical the contact, can increase the contact-making surface with commutative ring 50 like this; The noise and the electromagnetic interference that improve motor rotation stability and reduce direct current machine, thus product functional reliability and quality strengthened.

the foregoing description certainly only are the technical conceive and the characteristics of explanation the utility model; Its purpose is to let the people who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalent transformation or modifications of doing according to the spirit of the utility model main technical schemes all should be encompassed within the protection range of the utility model.

Claims

1. motor with modified form carbon brush; It is characterized in that: it comprises carbon brush holder (10) with carbon brush groove (60), is installed in carbon brush (20) in the carbon brush groove (60) and the commutative ring (50) that contact with carbon brush (20), wherein the crossing angle a that is of the horizontal axis of the central axis of carbon brush groove (60) and carbon brush holder (10).

2. according to the described motor with modified form carbon brush of claim 1, it is characterized in that: said angle a is the 5-15 degree.

3. according to the described motor of claim 2 with modified form carbon brush; It is characterized in that: said carbon brush (20) has a contact end face (200); This contact end face (200) carbon brush (20) center line relatively is asymmetric shape, and said carbon brush (20) is the drift angle contact with contacting of commutative ring (50).

4. according to the described motor with modified form carbon brush of claim 3, it is characterized in that: it further comprises the carbon brush cover plate (30) that is used for fixing carbon brush (20), is positioned at the brush holder spring (40) between carbon brush (20) and the carbon brush cover plate (30).