CN2496153Y - DC motor with canted brush - Google Patents
DC motor with canted brush Download PDFInfo
- Publication number
- CN2496153Y CN2496153Y CN 01253058 CN01253058U CN2496153Y CN 2496153 Y CN2496153 Y CN 2496153Y CN 01253058 CN01253058 CN 01253058 CN 01253058 U CN01253058 U CN 01253058U CN 2496153 Y CN2496153 Y CN 2496153Y
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- CN
- China
- Prior art keywords
- brush
- commutator
- motor
- increased
- utility
- 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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- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model relates to a low power brush direct current motor. In order to prolong the service life of a motor, the utility model discloses an inclined mounting type brush direct current motor, which comprises a casing, an armature, a stator, an iron core, a commutator and two brushes. The utility model is mainly characterized in that two symmetric brushes are obliquely arranged on the circumcircle of the commutator. Compared with the existing vertical arrangement, the contact area of the inclined brush and the commutator is increased, the current density of the brush contact surface is increased, the mechanical wear of the brush is reduced, and with the same inner diameter of the motor casing, the effective length of the inclined brush is increased, the wearing time is increased, and thus the service life of the motor is prolonged.
Description
Technical field
The utility model relates to DC motor, and belonging to a kind of small-power especially has the brush DC motor.
Background technology
The small-power direct current machine is widely used in the industries such as instrument, instrument, air conditioning for automobiles.It is serious that motor in the past damages phenomenon, usually changes, and exists motor short problem in useful life.Be in plumbness because adopt with commutator the brush installation site in the motor, this structure has been brought two defectives; The one, it is less that brush and commutator are in contact with one another area, cause wear of brush easily, the 2nd, the length of brush is restricted, it depends on the distance between motor housing and the commutator, brush length is short more, wear and tear soon more, the wearing-in period of brush has determined the useful life of motor, has caused the quality problems of motor.
Summary of the invention
For improving small-power arranged the useful life of brush direct current machine, the purpose of this utility model provides a kind of inclined type brush direct current machine, and it can increase the brush effective length, prolongs the wear of brush time.
The utility model is to realize by following technical scheme, it comprises that shell, armature, stator, iron core, commutator, two its structural features of brush are two brushes that are symmetrical in commutator, recede and be located on the commutator cylindrical, one end arc surface of brush contacts with the periphery of commutator, the brush body is embedded in the concave shape brush carrier groove, and can in groove, move up and down, the other end of brush contacts with spring, one end of jump ring contacts with spring, the other end contacts with brush carrier, and brush carrier fixes by rivet and seat board.When machine operation, because brush is tilting, the contact area of brush and commutator increases, and has reduced the brush contact susface current density, and the mechanical wear of brush is reduced, simultaneously, internal diameter at shell is identical following, and brush is tilting, and effective length is increased, increase wearing-in period, thereby prolonged the useful life of motor.
The utility model is owing to only need adopt the inclined type brush on original motor, so relatively simple for structure, the while makes the motor axial length dimension of same diameter shorten 1/10th because the inclined type brush effectively utilizes the motor internal space.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Execution mode
The utility model is described in further detail below with reference to accompanying drawing.
Among Fig. 1, the armature 1 of this motor is positioned at the center in shell 2 holes, and iron core 4 is housed on it, commutator 10, and when machine operation, armature drives them and rotates together.Have 3, two brushes of stator 5 tilting on the cylindrical of commutator 10 in the shell 2, the size at its angle of inclination is set by the size of motor size.After brush was tilting, in same diameter motor, the effective length of brush increased.The brush body is embedded in brush carrier 8 grooves of concave shape, and can in groove, move up and down, one end arc surface of brush 5 contacts with commutator 10 peripheries, the inclined type brush increases the contact area of brush and commutator, the other end of brush contacts with spring 7, rely on the pressure effect of spring 7, make the arc end of brush keep contacting with the commutator periphery always, the other end of spring contacts with jump ring 6, jump ring is used for preventing that spring from going out, the other end of jump ring 6 is put on brush carrier 8, and brush carrier 8 is fixing by rivet and seat board 9.
Claims (2)
1. inclined type brush direct current machine, comprise shell, armature, stator, iron core, commutator, two brushes, it is characterized in that two brushes that are symmetrical in commutator, recede and be located on the commutator cylindrical, one end arc surface of brush contacts with the periphery of commutator, the brush body is embedded in the concave shape brush carrier groove, and can in groove, move up and down, the other end of brush contacts with spring, one end of jump ring contacts with spring, the other end contacts with brush carrier, and brush carrier fixes by rivet and seat board.
2. inclined type brush direct current machine according to claim 1 is characterized in that receding and is located at brush on the commutator cylindrical, and the size at its angle of inclination is set by the size of motor size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253058 CN2496153Y (en) | 2001-08-14 | 2001-08-14 | DC motor with canted brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253058 CN2496153Y (en) | 2001-08-14 | 2001-08-14 | DC motor with canted brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2496153Y true CN2496153Y (en) | 2002-06-19 |
Family
ID=33662627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01253058 Expired - Lifetime CN2496153Y (en) | 2001-08-14 | 2001-08-14 | DC motor with canted brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2496153Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2483293C1 (en) * | 2011-12-15 | 2013-05-27 | Учреждение Российской Академии Наук Институт Физики Прочности И Материаловедения Сибирского Отделения Ран (Ифпм Со Ран) | Device for determining wear resistance of inclined current-collecting brushes at high contact current density |
| CN114744457A (en) * | 2022-05-13 | 2022-07-12 | 广州大学 | Brush device of miniature direct current motor and forming method of brush piece |
-
2001
- 2001-08-14 CN CN 01253058 patent/CN2496153Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2483293C1 (en) * | 2011-12-15 | 2013-05-27 | Учреждение Российской Академии Наук Институт Физики Прочности И Материаловедения Сибирского Отделения Ран (Ифпм Со Ран) | Device for determining wear resistance of inclined current-collecting brushes at high contact current density |
| CN114744457A (en) * | 2022-05-13 | 2022-07-12 | 广州大学 | Brush device of miniature direct current motor and forming method of brush piece |
| CN114744457B (en) * | 2022-05-13 | 2024-03-01 | 广州大学 | Electric brush device of miniature direct current motor and forming method of electric brush sheet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110814 Granted publication date: 20020619 |