CN202340157U - End cover group of hollow cup permanent magnetic direct current micro motor - Google Patents
End cover group of hollow cup permanent magnetic direct current micro motor Download PDFInfo
- Publication number
- CN202340157U CN202340157U CN2011204883424U CN201120488342U CN202340157U CN 202340157 U CN202340157 U CN 202340157U CN 2011204883424 U CN2011204883424 U CN 2011204883424U CN 201120488342 U CN201120488342 U CN 201120488342U CN 202340157 U CN202340157 U CN 202340157U
- Authority
- CN
- China
- Prior art keywords
- end cover
- brush
- direct current
- permanent magnetic
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Dc Machiner (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model discloses an end cover group of a hollow cup permanent magnetic direct current micro motor, and the end cover group comprises an end cover and a pair of electric brushes which is arranged on the end cover; the pair of electric brushes is in a V shape; and damping grease is arranged at the bottom of the pair of electric brushes. The end cover is used together with a rotor and a stator and can reduce the vibration amplitude of the pair of electric brushes when the motor works at high speed, so that the pair of electric brushes and a commutator are well contacted.
Description
Technical field
The utility model relates to the parts in a kind of motor, particularly the end cap group of hollow cup permanent magnetic direct current micromotor.
Background technology
The hollow cup permanent magnetic direct current micromotor is little because of volume, torque is big, the efficient advantages of higher is in the extensive use of miniature remote controlled toy industry.The agent structure of its motor is: magnet steel is fixed on the stator, and winding coil is arranged on the rotor, and brush is installed on the end cap, and commutator is fixed on the rotor, and electric energy is supplied power to epitrochanterian winding coil through brush, commutator.Brush on the end cap and epitrochanterian commutator are done relative rotary motion; Motor mechanically commutates, and is easy to generate spark motor is caused galvano-cautery, particularly when motor runs up; If the Oscillation Amplitude of brush is excessive; Cause brush and commutator loose contact, can produce very big spark galvano-cautery, thereby shorten the useful life of motor.Therefore, the vibration damping degree of brush is to playing important effect in useful life of motor.
Existing brush vibration damping is normally pasted the amortisseur bar of materials such as rubber, PET on brush arm; Run up and current of commutation when big at motor; The amortisseur bar viscosity that the fricative high temperature of brush and commutator can cause pasting weakens disengaging, can not play damping effect.
Summary of the invention
The purpose of the utility model provides a kind of end cap group of hollow cup permanent magnetic direct current micromotor, and it cooperates rotor and stator to use, and can when motor runs up, reduce the Oscillation Amplitude of brush, and brush is contacted well with commutator.
The end cap group of the described hollow cup permanent magnetic direct current micromotor of the utility model comprises end cap and a pair of brush mounted thereto, and brush is V-shaped, and the bottom of brush is provided with damping grease.
The utility model is provided with the damping grease of good damping result through the bottom at a pair of brush, has reduced the Oscillation Amplitude of brush when motor runs up, and has increased the reliability that brush contacts with commutator, has reduced spark, has prolonged the useful life of motor.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the front view of the utility model;
Fig. 2 is the cutaway view (except that end cap) of each assembly of hollow cup permanent magnetic direct current micromotor.
Embodiment
The end cap group of hollow cup permanent magnetic direct current micromotor as shown in Figure 1 comprises end cap 2 and a pair of brush 1 mounted thereto, and brush 1 is V-shaped, and the bottom of brush 1 is provided with damping grease 3, and damping grease 3 adopts the damping grease of high temperature resistant damping characteristic.
As shown in Figure 2; The magnet steel 7 of hollow cup permanent magnetic direct current micromotor is formed stator with shell 8; Winding coil 4 is arranged on the rotor 5; Commutator 6 is fixed on the rotor 5, and the brush sheet and the commutator 6 that are installed in the brush 1 on the end cap 2 radially compress, and electric energy is through winding coil 4 power supplies on rotor 5 of brush 1, commutator 6.
Claims (1)
1. the end cap group of a hollow cup permanent magnetic direct current micromotor comprises end cap (2) and a pair of brush (1) mounted thereto, and brush is V-shaped, it is characterized in that: the bottom of brush is provided with damping grease (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204883424U CN202340157U (en) | 2011-11-30 | 2011-11-30 | End cover group of hollow cup permanent magnetic direct current micro motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204883424U CN202340157U (en) | 2011-11-30 | 2011-11-30 | End cover group of hollow cup permanent magnetic direct current micro motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202340157U true CN202340157U (en) | 2012-07-18 |
Family
ID=46488844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204883424U Expired - Lifetime CN202340157U (en) | 2011-11-30 | 2011-11-30 | End cover group of hollow cup permanent magnetic direct current micro motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202340157U (en) |
-
2011
- 2011-11-30 CN CN2011204883424U patent/CN202340157U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |
|
| CX01 | Expiry of patent term |