CN201260115Y

CN201260115Y - Motor with brush

Info

Publication number: CN201260115Y
Application number: CNU2008201357143U
Authority: CN
Inventors: 徐荣祖
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-08
Filing date: 2008-10-08
Publication date: 2009-06-17
Anticipated expiration: 2018-10-08

Abstract

Disclosed is a brush motor, which comprises a main casing, a crankshaft and a high end cap, wherein, the main casing is connected with the high end cap, an end cap is arranged between the main casing and the high end cap, the crankshaft is positioned in the main casing and the high end cap, a rotor and a conducting slip ring are fixed on the crankshaft, a rotor lead wire connected to the conducting slip ring is arranged on the rotor, and the utility model adopts the primary design that: a round dust-arresting fixed board is fixed between the rotor and the conducting slip ring on the crankshaft, and the rotor lead wire penetrates through the dust-arresting fixed board; and the dust-arresting fixed board is in clearance fit with the end cap correspondingly. The design of the dust-arresting fixed board can effectively prevent carbon powder and particles produced by friction of the electric brush from entering between the stator and the rotor, and increase safety factors of the operational environment in the motor; meanwhile, the utility model can play the role in fixing and buffering to the rotor lead wire, reduce the centrifugal tension received by the rotor lead wire when in high speed running of the motor, and extend the service life of the rotor lead wire.

Description

A kind of have a brush motor

Technical field

The utility model relates to a kind of brush motor that has, particularly a kind of be provided with dust-break, fixture the brush motor arranged.

Background technology

The brush (conducting slip ring, collector ring) that the brush motor the is arranged commonly used at present carbonaceous conductive made that adopt can produce a lot of small carbon dusts like this after long-term friction.And do not have spacer assembly between the brush chamber of most of brush motors and the rotor, so the carbon dust that produces can some drop between stator and the rotor along with the running of motor,, caused potential safety hazard if accumulation too much will make stator, rotor conduction.

Simultaneously, adopt the rotor lead wire to connect between the rotor of brush motor commonly used and the conducting slip ring, along with running up of rotor, can produce bigger centrifugal force to the rotor lead wire, this also makes the rotor lead wire be under the bigger tension force effect always, so cause the low defective of failure rate height, life-span of rotor lead wire.

Based on above-mentioned two problems, I am provided with a dust-break fixed head on brush motor commonly used, and a mechanism can solve above-mentioned two problems simultaneously.

The utility model content

The purpose of this utility model provides a kind of brush motor that has, and the potential safety hazard that the carbon dust that solution brush motor commonly used produces when turning round brings solves the rotor lead wire simultaneously owing to bear centrifugal tension and low problem of life-span for a long time.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of have a brush motor, comprises main case, arbor, high end cap, and main case is connected with high end cap, is provided with end cap between main case and high end cap, and brush-holding device is installed on end cap, is fixed with brush on the brush-holding device; Arbor is positioned at main case and high end cap inside, be fixed with rotor and conducting slip ring on arbor, rotor is provided with the rotor lead wire and is connected to conducting slip ring, also comprises circular dust-break fixed head, be fixed between the rotor and conducting slip ring on the arbor, described rotor lead wire passes the dust-break fixed head; Described dust-break fixed head is corresponding with described end cap and adopt matched in clearance.

The beneficial effects of the utility model are: can prevent effectively that the carbon powder particle that brush friction produces from entering between stator and the rotor, improved the coefficient of safety of motor internal operational environment; Simultaneously, can play effect fixing and buffering, reduce the centrifugal tension that the rotor lead wire is received when motor runs up, prolong the useful life of rotor lead wire the rotor lead wire.

Description of drawings

With embodiment the utility model is described in further detail with reference to the accompanying drawings below.

Fig. 1 is the described a kind of brush electric motor structure figure that has of the utility model embodiment.

Among the figure:

1, main case;

2, high end cap;

3, arbor;

4, end cap;

5, rotor;

6, conducting slip ring;

7, dust-break fixed head;

8, brush;

9, brush-holding device;

10, sealing ring.

Embodiment

As shown in Figure 1, described in the utility model have a brush motor, comprises main case 1, arbor 3, high end cap 2, main case 1 is connected with high end cap 2, between main case 1 and high end cap 2, be provided with end cap 4, brush-holding device 9 is installed on end cap 4, be fixed with brush 8 on the brush-holding device 9; Arbor 3 is positioned at main case 1 and high end cap 2 inside, on arbor 3, be fixed with rotor 5 and conducting slip ring 6, rotor 5 is provided with the rotor lead wire and is connected to conducting slip ring 6, also comprise circular dust-break fixed head 7, be fixed between the rotor 5 and conducting slip ring 6 on the arbor 3, described rotor lead wire passes dust-break fixed head 7, and dust-break fixed head 7 is provided with sealing ring 10 canned rotor lead wires; Described dust-break fixed head 7 and described end cap 4 are corresponding and adopt matched in clearance.

The design of the dust-break fixed head that brush motor of the present invention adopted can prevent effectively that the carbon powder particle that brush friction produces from entering between stator and the rotor, improved the coefficient of safety of motor internal operational environment; Simultaneously, can play effect fixing and buffering, reduce the centrifugal tension that the rotor lead wire is received when motor runs up, prolong the useful life of rotor lead wire the rotor lead wire.

Claims

1, a kind of have a brush motor, comprise main case, arbor, high end cap, main case is connected with high end cap, arbor is positioned at main case and high end cap inside, is fixed with rotor and conducting slip ring on arbor, and rotor is provided with the rotor lead wire and is connected to conducting slip ring, it is characterized in that, also comprise circular dust-break fixed head, be fixed between the rotor and conducting slip ring on the arbor that described rotor lead wire passes the dust-break fixed head.

2, according to claim 1 have a brush motor, it is characterized in that: be provided with end cap between main case and high end cap, brush-holding device is installed on end cap, be fixed with brush on the brush-holding device.

3, a kind of brush motor that has according to claim 1 and 2 is characterized in that: the corresponding matched in clearance with end cap of described dust-break fixed head.

4, a kind of brush motor that has according to claim 1, it is characterized in that: the dust-break fixed head is provided with sealing ring canned rotor lead wire.