CN102237772A - Brushless motor of outer rotors - Google Patents
Brushless motor of outer rotors Download PDFInfo
- Publication number
- CN102237772A CN102237772A CN2010101575879A CN201010157587A CN102237772A CN 102237772 A CN102237772 A CN 102237772A CN 2010101575879 A CN2010101575879 A CN 2010101575879A CN 201010157587 A CN201010157587 A CN 201010157587A CN 102237772 A CN102237772 A CN 102237772A
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- China
- Prior art keywords
- shell
- central shaft
- brushless motor
- bearing
- fixed
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- 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.)
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Abstract
The invention provides a brushless motor of outer rotors, comprising a central shaft, a shell, a bearing at one end of the shell, a permanent magnet, a stator armature, a driver, a back cover, a fixed plate and a power wire connected with the stator armature, wherein one end of the central shaft passes through the center of the bearing; the bearing is fixed at one end of the shell; the permanent magnet is fixed on the inner wall of the shell; the central shaft passes through and can fix the stator armature; and the driver is arranged inside the shell and fixed on the central shaft. Because the central shaft is fixed and the shell rotates (the outer rotors rotate) in the brushless motor, mechanical equipment can be arranged on the shell (the shell excircle and related end face) directly; and the shell rotates to drive the mechanical equipment to rotate, thus avoiding the problem that the central shaft is used as a connecting part of the mechanical equipment and also outputs moment in the prior art. When the mechanical equipment is not concentric or subjected to external forces, the rotation of the mechanical equipment is influenced, thus the functions of the brushless motor are weakened.
Description
Technical field
The present invention relates to the motor device technical field, particularly a kind of central shaft does not change the direct current outer rotor brushless motor.
Background technology
Existing external rotor electric machine all is that shell drives central shaft rotation (shell and central shaft are close-fittings, and shell rotates and drives the central shaft rotation), and this motor generally all is to drive plant equipment with central shaft.Plant equipment be installed in the motor center axle above, push down the central shaft of rotation, cause friction to increase, make rotating speed slack-off and damage motor etc.
Summary of the invention
The invention provides the outer rotor brushless motor that a kind of central shaft maintains static, shell rotates.
To achieve these goals, the invention provides following technical scheme:
A kind of outer rotor brushless motor, it comprises: central shaft, shell, be positioned at shell one end bearing, permanent magnet, stator armature, driver and power line, wherein: an end of described central shaft passes the center of described bearing, described bearing fixing is on an end of described shell, described outer casing inner wall fixedly is equiped with permanent magnet, described central shaft passes described stator armature and fixing described stator armature, and described power line is electrically connected described driver and connects on the described stator armature again.
Wherein, preferred, described outer rotor brushless motor also comprises: bonnet, described bonnet is fixed on the other end of described shell, fixedly be equiped with bearing on the described bonnet, the other end of described central shaft is installed on the bearing of this bonnet, and described bonnet combines for sealing with described shell.
Wherein, preferred, the other end of described shell is equiped with fixed head.
Wherein, preferred, described central shaft is provided with the hole or the groove of strip, and described power line passes from described hole or groove.
Wherein, preferred, described driver is positioned at described enclosure and is fixed on the described central shaft, and perhaps described driver is fixed on the outside of described shell.
By implementing above technical scheme, have following technique effect: outer rotor brushless motor provided by the invention by central shaft maintain static, shell rotates, directly be installed in plant equipment on the shell, rotating band motivation tool equipment by shell rotates, when preventing that plant equipment is installed on the central shaft, push down central shaft, cause frictional force to increase, rotating speed is slack-off and damage the problem of motor.
Description of drawings
Fig. 1 is the front view (cutaway view) of first kind of outer rotor brushless motor provided by the invention;
Fig. 2 is the left view of first kind of outer rotor brushless motor provided by the invention;
Fig. 3 is the front view (cutaway view) of second kind of outer rotor brushless motor provided by the invention.
Embodiment
Technical scheme is for a better understanding of the present invention described embodiment provided by the invention in detail below in conjunction with accompanying drawing.
The invention provides a kind of outer rotor brushless motor, as Fig. 1, Fig. 2 and shown in Figure 3, it comprises: central shaft 11, bearing 12, shell 13, permanent magnet 14, stator armature 15 and driver 16, wherein:
One end of described central shaft 11 passes the center of described bearing 12, and described bearing 12 is fixed on the end of described shell 13, and bearing 12 can rotate around central shaft 11.
Described shell 13 inwalls fixedly are equiped with permanent magnet 14, and described permanent magnet 14 is generally magnetite or magnet.
Described central shaft 11 passes described stator armature 15 and fixing described stator armature 15, and described driver 16 is positioned at described shell 13 inside and is fixed on the described central shaft 11, and perhaps described driver 16 is in the outside of described shell 13.Power line 18 is connected with driver 16 again and is connected with stator armature 15, and this central shaft 11 is fixed up, and shell 13 rotates, and rotates by shell 13 and drives other plant equipment rotations.Give driver 16 energisings by power line 18, driving stator armatures 15 by driver 16 produces magnetic fields and is positioned at shell 13 epitrochanterian permanent magnets 14 and produces inductive reactions and rotate, avoided central shaft of the prior art will do the connection of plant equipment, do the output of moment again, when the plant equipment decentraction or have external force to do the time spent to rotate and to be affected, make the function reduction of motor.
Further among the embodiment, the other end of described central shaft 11 is installed on the bearing 12 of bonnet 17, and the two ends of this central shaft 11 all are installed on the bearing 12, and as depicted in figs. 1 and 2, described bonnet 17 combines for sealing with described shell 13.Described stator armature 15 also is connected with the power line 18 that is used for energized, and described central shaft 11 is provided with the hole or the groove 19 of strip, and described power line 18 passes from described hole or groove 19.Cause shell 13 both sides of motor can complete closed, be particularly suitable for some environment relatively more abominable in, make things such as dust, profit can not advance to be put into this brushless electric machine the inside, the parts and the useful life of destroying motor.
In the additional embodiments, be the brushless electric machine of shell 13, install fixed head 21 at the other end of shell 13 and get final product, driver 16 can also be installed on the fixed head 21 for not sealing, as shown in Figure 3, can be used in better use in (ashless, no rainwater etc.) of environment.
More than a kind of outer rotor brushless motor that the embodiment of the invention provided is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. outer rotor brushless motor, it is characterized in that, comprise: central shaft, shell, be positioned at shell one end bearing, permanent magnet, stator armature, driver and power line, wherein: an end of described central shaft passes the center of described bearing, described bearing fixing is on an end of described shell, described outer casing inner wall fixedly is equiped with permanent magnet, and described central shaft passes described stator armature and fixing described stator armature, and described power line is electrically connected described driver and connects on the described stator armature again.
2. outer rotor brushless motor according to claim 1, it is characterized in that, also comprise bonnet, described bonnet is fixed on the other end of described shell, fixedly be equiped with bearing on the described bonnet, the other end of described central shaft is installed on the bearing of this bonnet, and described bonnet combines for sealing with described shell.
3. outer rotor brushless motor according to claim 1 is characterized in that the other end of described shell is equiped with fixed head.
4. outer rotor brushless motor according to claim 1 is characterized in that described central shaft is provided with the hole or the groove of strip, and described power line passes from described hole or groove.
5. outer rotor brushless motor according to claim 1 is characterized in that described driver is positioned at described enclosure and is fixed on the described central shaft, and perhaps described driver is fixed on the outside of described shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101575879A CN102237772A (en) | 2010-04-23 | 2010-04-23 | Brushless motor of outer rotors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101575879A CN102237772A (en) | 2010-04-23 | 2010-04-23 | Brushless motor of outer rotors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102237772A true CN102237772A (en) | 2011-11-09 |
Family
ID=44888104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101575879A Pending CN102237772A (en) | 2010-04-23 | 2010-04-23 | Brushless motor of outer rotors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102237772A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1489735A2 (en) * | 2003-06-18 | 2004-12-22 | BVR Technologies Company | Methods and apparatus for a contactless electro-mechanical actuator with coupled electronic motor commutation and output position sensors |
| CN201054537Y (en) * | 2007-06-09 | 2008-04-30 | 吕泰安 | AC power supply brushless DC suspending fan electromotor |
| CN201204507Y (en) * | 2008-04-16 | 2009-03-04 | 佛山市南海区东唐电机厂 | DC brushless outer rotor motor |
| CN201854161U (en) * | 2010-09-17 | 2011-06-01 | 黎冬阳 | Brushless motor with outer rotor |
-
2010
- 2010-04-23 CN CN2010101575879A patent/CN102237772A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1489735A2 (en) * | 2003-06-18 | 2004-12-22 | BVR Technologies Company | Methods and apparatus for a contactless electro-mechanical actuator with coupled electronic motor commutation and output position sensors |
| CN201054537Y (en) * | 2007-06-09 | 2008-04-30 | 吕泰安 | AC power supply brushless DC suspending fan electromotor |
| CN201204507Y (en) * | 2008-04-16 | 2009-03-04 | 佛山市南海区东唐电机厂 | DC brushless outer rotor motor |
| CN201854161U (en) * | 2010-09-17 | 2011-06-01 | 黎冬阳 | Brushless motor with outer rotor |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111109 |