CN105871161A - Miniature brushless DC motor - Google Patents
Miniature brushless DC motor Download PDFInfo
- Publication number
- CN105871161A CN105871161A CN201610212140.4A CN201610212140A CN105871161A CN 105871161 A CN105871161 A CN 105871161A CN 201610212140 A CN201610212140 A CN 201610212140A CN 105871161 A CN105871161 A CN 105871161A
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- miniature brushless
- magnet steel
- casing
- stator coil
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Brushless Motors (AREA)
Abstract
The invention discloses a miniature brushless DC motor. The miniature brushless DC motor is characterized by comprising a case and a rear cover, wherein the case and the rear cover are fixedly connected, a stator coil and a rotor part are arranged in an inner cavity of the case, the stator coil is fixedly arranged, the rotor part comprises a rotor shaft, a shaft sleeve and four blocks of magnetic steel, a front shaft end and a rear shaft end of the rotor shaft are separately in slewing bearing by a front bearing and a rear bearing which are arranged in the case and the rear cover, the shaft sleeve fixedly sleeves the rotor shaft, the end surface of the front end of the shaft sleeve props against the end surface of the inner side of the front bearing by a rubber gasket and an adjustment gasket, the end surface of the rear end of the shaft sleeve props against the end surface of the inner side of the rear bearing by a spring, the four blocks of magnetic steel are fixedly pasted at an outer circle of the shaft sleeve by adhesives, and an adhesive tape is further wound around the outer circle formed by the four blocks of magnetic steel. The miniature brushless DC motor has the advantages of small appearance size, simplicity in structure, high quality and reliability in high-speed running.
Description
Technical field
The present invention relates to a kind of miniature brushless direct-current motor.
Background technology
Miniature brushless direct-current motor, compared with Traditional DC motor, eliminates brush and diverter, has higher reliability and higher rotating speed, can also be less in physical dimension.The miniature brushless direct-current motor of prior art, including the fixing casing connected and bonnet, chassis cavity is provided with stator coil and rotor part, stator coil fixedly mounts, rotor part includes armature spindle, axle sleeve and magnet steel, before and after armature spindle, axle head is carried out pivoting support by the bearing arranged in casing and bonnet respectively, axle sleeve is fixedly sleeved on armature spindle, magnet steel is then fixed on sleeve outer circle, due to high-speed cruising requirement to be met, need between adjacent magnet steel to carry out adding strong ties by machinery snap fit, this just makes electric machine structure become complicated, and motor overall dimensions can not reduce further.It addition, the miniature brushless direct-current motor of prior art, armature spindle does not has reliable axial limiting, is easily generated axial float during work, affects the reliability of high speed operation of motor.
Summary of the invention
In view of the deficiency of background technology, the technical problem to be solved is to provide that a kind of overall dimensions is little, simple in construction, the simultaneously reliable miniature brushless direct-current motor of the good high-speed cruising of quality.
To this end, the present invention uses following scheme to realize:
A kind of miniature brushless direct-current motor, it is characterized in that: include casing and the bonnet of fixing connection, chassis cavity is provided with stator coil and rotor part, stator coil fixedly mounts, rotor part includes armature spindle, axle sleeve and magnet steel, before and after armature spindle, axle head is carried out pivoting support by bearing before and after arranging in casing and bonnet respectively, axle sleeve is fixedly sleeved on armature spindle, the front end surface of axle sleeve is offseted with adjusting the pad inner side end with fore bearing by rubber washer, the rear end end face of axle sleeve is offseted by the inner side end of spring with rear bearing, magnet steel is provided with four pieces and passes through the binding agent cylindrical fixed bonding at axle sleeve, the cylindrical formed at four blocks of magnet steel is also wound around adhesive tape.
Magnet steel side slopes inwardly design, crosses the sideshake with triangle between the side of adjacent magnet steel.
The side that stator coil is relative with casing front end is provided with front insulating trip, and front insulating trip is fixed in casing, and the side that stator coil is relative with bonnet is provided with rear insulating trip, and rear insulating trip is fixed on the front of Hall Plate.
Casing and bonnet use aluminum component.
Axle sleeve uses metallic sintered products.
After using technique scheme, the Advantageous Effects that the present invention realizes is: 1. magnet steel passes through the binding agent cylindrical fixed bonding at axle sleeve, and be wound at magnet steel cylindrical adhesive tape, not only meet high speed operation of motor requirement, quality good, and simple in construction, can effectively reduce the overall dimensions of motor；2. the front end surface of axle sleeve is offseted with adjusting the pad inner side end with fore bearing by rubber washer, the rear end end face of axle sleeve is offseted by the inner side end of spring with rear bearing, and front and back bearings obtains reliable axially location in casing and bonnet, so, axle sleeve just can obtain reliable axial limiting, and axle sleeve is fixedly sleeved with armature spindle, so armature spindle the most just can have reliable axial limiting, axial float would not be produced during work, thus improve the reliability of high speed operation of motor；The triangle sideshake crossed between the most adjacent magnet steel side, can be used for the filling of binding agent, makes more preferably to be fixed at sleeve outer circle between magnet steel, meets high speed operation of motor requirement；4. pass through before and after stator coil front and back to be formed between insulating trip and casing front end and Hall Plate and separate, it is ensured that the reliable insulation of motor internal, motor quality is good.
Accompanying drawing explanation
The present invention has a drawings described below:
Fig. 1 is the structural representation of the present invention,
Fig. 2 is that the C-C sectional view of Fig. 1 amplifies.
Detailed description of the invention
nullAs shown in the figure，A kind of miniature brushless direct-current motor of the present invention，Including the fixing casing 6 connected and bonnet 3，Casing 6 and bonnet 3 use aluminum component，Casing 6 inner chamber is provided with stator coil 7 and rotor part，Stator coil 7 fixedly mounts，The side that stator coil 7 is relative with casing front end is provided with front insulating trip 12，Front insulating trip 12 is fixed in casing 6，The side that stator coil 7 is relative with bonnet 3 is provided with rear insulating trip 5，Rear insulating trip 5 is fixed on the front of Hall Plate 4，Rotor part includes armature spindle 14、Axle sleeve 10 and magnet steel 9，Before and after armature spindle 14, axle head is respectively by the fore bearing 15 arranged in casing 6 and bonnet 3、Rear bearing 1 carries out pivoting support，Axle sleeve 10 is fixedly sleeved on armature spindle 14，Axle sleeve 10 uses metallic sintered products，The front end surface of axle sleeve 10 is offseted with adjusting the pad 13 inner side end with fore bearing 15 by rubber washer 11，The rear end end face of axle sleeve 10 is offseted by the inner side end of spring 2 with rear bearing 1，Magnet steel 9 is provided with four pieces and passes through the binding agent cylindrical fixed bonding at axle sleeve 10，The cylindrical formed at four blocks of magnet steel 9 is wound around adhesive tape 8，Magnet steel 9 side slopes inwardly design，The sideshake 16 with triangle is crossed between the side of adjacent magnet steel 9.
Claims (5)
1. a miniature brushless direct-current motor, it is characterized in that: include casing and the bonnet of fixing connection, chassis cavity is provided with stator coil and rotor part, stator coil fixedly mounts, rotor part includes armature spindle, axle sleeve and magnet steel, before and after armature spindle, axle head is carried out pivoting support by bearing before and after arranging in casing and bonnet respectively, axle sleeve is fixedly sleeved on armature spindle, the front end surface of axle sleeve is offseted with adjusting the pad inner side end with fore bearing by rubber washer, the rear end end face of axle sleeve is offseted by the inner side end of spring with rear bearing, magnet steel is provided with four pieces and passes through the binding agent cylindrical fixed bonding at axle sleeve, the cylindrical formed at four blocks of magnet steel is also wound around adhesive tape.
2. miniature brushless direct-current motor as claimed in claim 1 a kind of, it is characterised in that: magnet steel side slopes inwardly design, crosses the sideshake with triangle between the side of adjacent magnet steel.
3. a kind of miniature brushless direct-current motor as claimed in claim 1, it is characterized in that: the side that stator coil is relative with casing front end is provided with front insulating trip, front insulating trip is fixed in casing, and the side that stator coil is relative with bonnet is provided with rear insulating trip, and rear insulating trip is fixed on the front of Hall Plate.
4. a kind of miniature brushless direct-current motor as claimed in claim 1, it is characterised in that: casing and bonnet use aluminum component.
5. a kind of miniature brushless direct-current motor as claimed in claim 1, it is characterised in that: axle sleeve uses metallic sintered products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212140.4A CN105871161A (en) | 2016-04-07 | 2016-04-07 | Miniature brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212140.4A CN105871161A (en) | 2016-04-07 | 2016-04-07 | Miniature brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105871161A true CN105871161A (en) | 2016-08-17 |
Family
ID=56636413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610212140.4A Pending CN105871161A (en) | 2016-04-07 | 2016-04-07 | Miniature brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105871161A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494892A (en) * | 2018-11-02 | 2019-03-19 | 柴民 | A kind of single-phase alternator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113741Y (en) * | 2007-09-18 | 2008-09-10 | 深圳市仓兴达科技有限公司 | Sensor-free inner rotor permanent magnetism DC brushless motor |
| CN102035289A (en) * | 2010-12-30 | 2011-04-27 | 东莞国亮电机有限公司 | Vibration damping and noise reducing mechanism for motor rotor |
| CN202085007U (en) * | 2011-05-06 | 2011-12-21 | 大连电机集团有限公司 | Rotor protective cover for surface mounted permanent magnet motors |
| CN203251176U (en) * | 2013-05-03 | 2013-10-23 | 嵊州市精达电机有限公司 | Motor |
| CN203674947U (en) * | 2013-11-25 | 2014-06-25 | 东莞市瑞科五金塑胶制品有限公司 | Minitype brushless direct current motor |
| CN205509815U (en) * | 2016-04-07 | 2016-08-24 | 温州的可电器有限公司 | Miniature brushless DC motor |
-
2016
- 2016-04-07 CN CN201610212140.4A patent/CN105871161A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113741Y (en) * | 2007-09-18 | 2008-09-10 | 深圳市仓兴达科技有限公司 | Sensor-free inner rotor permanent magnetism DC brushless motor |
| CN102035289A (en) * | 2010-12-30 | 2011-04-27 | 东莞国亮电机有限公司 | Vibration damping and noise reducing mechanism for motor rotor |
| CN202085007U (en) * | 2011-05-06 | 2011-12-21 | 大连电机集团有限公司 | Rotor protective cover for surface mounted permanent magnet motors |
| CN203251176U (en) * | 2013-05-03 | 2013-10-23 | 嵊州市精达电机有限公司 | Motor |
| CN203674947U (en) * | 2013-11-25 | 2014-06-25 | 东莞市瑞科五金塑胶制品有限公司 | Minitype brushless direct current motor |
| CN205509815U (en) * | 2016-04-07 | 2016-08-24 | 温州的可电器有限公司 | Miniature brushless DC motor |
Non-Patent Citations (1)
| Title |
|---|
| 李国发: "《汽车电气设备》", 31 August 2008 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494892A (en) * | 2018-11-02 | 2019-03-19 | 柴民 | A kind of single-phase alternator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160817 |
|
| WD01 | Invention patent application deemed withdrawn after publication |