CN201352736Y - Harmonic wave brushless motor - Google Patents
Harmonic wave brushless motor Download PDFInfo
- Publication number
- CN201352736Y CN201352736Y CNU2009201136304U CN200920113630U CN201352736Y CN 201352736 Y CN201352736 Y CN 201352736Y CN U2009201136304 U CNU2009201136304 U CN U2009201136304U CN 200920113630 U CN200920113630 U CN 200920113630U CN 201352736 Y CN201352736 Y CN 201352736Y
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- Prior art keywords
- harmonic wave
- harmonic
- motor
- flexbile gear
- spring
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Abstract
A harmonic wave brushless motor comprises a centre shaft which is fixedly arranged in a motor shell, and a motor and a harmonic wave transmission gear which are arranged on the centre shaft, wherein the motor comprises a motor rotor and a motor stator; the harmonic wave transmission gear comprises a harmonic wave generator, a harmonic wave rigid gear and a harmonic wave flexible gear; the motor rotor and the harmonic wave generator are fixedly arranged into a whole; and the motor rotor, the harmonic wave generator, the harmonic wave flexible gear and the centre shaft are arranged in the coaxial core manner. The harmonic wave brushless motor is characterized in that the output end of the harmonic wave flexible gear is provided with a unilateral driver which rotates with the harmonic wave flexible gear in a coaxial manner, and an inner race of the unilateral driver is connected with a power follower.
Description
Technical field
The utility model relates to a kind of motor, particularly a kind of harmonic brushless motor.
Background technology
The early stage slowspeed machines that adopt of electric bicycle directly drive more, perhaps use middling speed electric drilling match planetary gear speed-reduction, and the volume of these driving mechanisms is big, inefficiency, has reduced the overall performance of electric bicycle.Continuous development along with technology, someone has proposed to adopt high-speed electric expreess locomotive that a kind of harmonic reduction driver of electric bicycle is provided as power, the operation principle of harmonic drive is: when wave producer rotates, force flexbile gear to be deformed into ellipse by circle, make near the tooth in major axis two ends enter engagement, near the end axle a tooth is then thrown off, and the tooth on all the other different sections has is in engaging-in gradually state, and have be in to nibble gradually and do well.When wave producer rotated continuously, the deformation place of flexbile gear also rotated thereupon, makes the gear teeth enter engagement successively, withdraws from engagement then again successively, thereby realized engaged transmission.Therefore, harmonic drive has the following advantages: 1. gearratio is big, single-stage deceleration i
1HCan reach 50～500; 2. the number of teeth of engagement is many simultaneously, the bearing capacity height; 3. stable drive, transmission accuracy height, wearing and tearing are little; 4. under big speed ratio, still have higher mechanical efficiency.
As the patent No. is that 200720067031.4 Chinese utility model patent " electric bicycle new harmonic reducing gear " discloses a kind of harmonic reduction mechanism, on electric bicycle harmonic reduction mechanism basis, motor rotor directly is fixed on the harmonic oscillator sleeve outer diameter to become one, directly support simultaneously with the harmonic wave flexbile gear, omitted the harmonic wave flexbile gear sleeve in the former harmonic reduction mechanism by bicycle middle shaft.Omitted harmonic wave flexbile gear sleeve in the above-mentioned patent, increased the motor radial space, greatly reduced the motor axial dimension, made that the motor overall structure is simpler.But, in the above-mentioned patent, power is imported into by harmonic oscillator by rotor, and by the output of harmonic wave flexbile gear, because power is directly exported by the harmonic wave flexbile gear, the harmonic wave flexbile gear bears bigger alternate load flexbile gear fatigue damage takes place easily, and heating is serious, therefore, fatigue resistance, processing and heat treatment requirements that the motor of above-mentioned patent structure is made flexbile gear are all very high, the technology relative complex, the cost height, and, transducer is not set in the above-mentioned patent, staring torque is bigger, can cause certain wearing and tearing to motor, influences the useful life of motor.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of can reduce the requirement of strength of flexbile gear and the harmonic brushless motor that effectively reduces production costs at above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this harmonic brushless motor, include an axis that is fixedly installed in the electric machine casing, and be arranged on motor and harmonic drive on this axis, wherein, described motor includes rotor and motor stator, described harmonic drive includes harmonic oscillator, harmonic wave is wheel and harmonic wave flexbile gear just, described rotor and harmonic oscillator are fixedly set in one, and, described rotor, harmonic oscillator, harmonic wave flexbile gear and described axis are the concentric setting, it is characterized in that: described harmonic wave flexbile gear is provided with one and the unidirectional driver of this harmonic wave flexbile gear coaxial rotation at output, and the inner ring of this unidirectional driver is connected with power take off.
Described unidirectional driver can be roller-type one way clutch, also can be free wheeling sprag clutch, as preferably, described unidirectional driver is a roller-type one way clutch, described harmonic wave flexbile gear is the thin-walled tubular, this one-way clutch includes shell, roller, spring, post alive and cross piece, wherein, described shell is fixedly connected on the tube of described harmonic wave flexbile gear at the end, offer spring base and wedge-shaped slot on the described cross piece, the described spring and the post of living are contained in the spring base, described roller is placed in the described wedge-shaped slot, and an end and the described roller of described post alive offset, one end of the other end and described spring offsets, and the other end of this spring is fixed in the described spring base.
Also be provided with a Hall element in the described electric machine casing, a side of this Hall element also be provided with one can around the rotation of described axis and with the corresponding sensing magnet ring of this Hall element.So rotary speed and the acceleration signal running of controlling motor of the motor shaft that control system provides according to Hall element when foot-operated realizes assist function.
Compared with prior art, advantage of the present utility model is: the harmonic wave flexbile gear output at the harmonic brushless motor is provided with a unidirectional driver, by this unidirectional driver and then again power is spread out of to power take off, the setting of this unidirectional driver avoids the harmonic wave flexbile gear directly as the output outputting power, can reduce requirement to the flexbile gear fatigue resistance, simplified the flexbile gear manufacturing process, the material that is used for making flexbile gear can replace the higher Chromador of prior art price by ordinary steel, can effectively reduce production costs; Simultaneously, in motor, be provided with power-assisted hall sensing system, can guarantee the non-zero starting of motor, reduced the wearing and tearing of motor, prolonged the useful life of motor.
Description of drawings
Fig. 1 is the assembly structure cutaway view of the utility model embodiment;
Fig. 2 is the isolator partial sectional view of the utility model embodiment;
Fig. 3 is that A-A shown in Figure 2 is to cutaway view.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2 and shown in Figure 3, be specific embodiment of the utility model, this motor is a harmonic brushless motor, is mainly used on the electric bicycle, includes
Be arranged on motor and harmonic drive on the axis 2, wherein, motor includes rotor 31 and motor stator 32, and wherein, rotor 31 has four to the utmost point, can adapt to high rotating speed, passes through bearing a support and connection between rotor 31 and the axis 2;
Harmonic drive includes harmonic oscillator 4, harmonic wave and has just taken turns 5 and harmonic wave flexbile gear 6, rotor 31 and harmonic oscillator 4 are fixedly set in one, and, rotor 31, harmonic oscillator 4, harmonic wave flexbile gear 6 and axis 2 are the concentric setting, harmonic wave flexbile gear 6 is the thin-walled tubular, be provided with one and the unidirectional driver of these harmonic wave flexbile gear 6 coaxial rotation at the output of harmonic wave flexbile gear 6, the inner ring of this unidirectional driver is connected with power take off 7, passes through bearing b support and connection between this power take off 7 and the bottom bracket axle 21.
The unidirectional driver of present embodiment is a roller-type one way clutch 8, this roller-type one way clutch 8 includes shell 81, roller 82, spring 83, live post 84 and cross piece 85, wherein, shell 81 is fixedly connected on the tube of harmonic wave flexbile gear 6 at the end, offer spring base 851 and wedge-shaped slot 852 on the cross piece 85, the spring 83 and the post 84 of living are contained in the spring base 851, roller 82 is placed in the wedge-shaped slot 852, and, one end and the roller 82 of post 84 alive offset, one end of the other end and spring 83 offsets, and the other end of this spring 83 is fixed in the spring base 851.As shown in Figure 2, be the operation principle schematic diagram of roller-type one way clutch, the position of roller in wedge-shaped slot when dotted line is depicted as throw-out-of clutch among the figure, the operation principle of roller-type one way clutch is a prior art, does not do at this and gives unnecessary details.
Also be provided with a sensor stand 91 at the electric machine casing 1 that is positioned at bonnet 12 1 sides, be fixed with a Hall element 92 on support 91, axis 2 is provided with one and can rotates and the sensing magnet ring 93 relative with this Hall element 92 around this axis 2.Hall element 92 can be used for detecting direction of rotation, speed and the acceleration of motor, and the motor rotor position signal that control system then provides according to Hall element is controlled the running of motor.
The harmonic brushless motor of present embodiment is realized power output by one-way clutch, can reduce requirement to the flexbile gear fatigue resistance, therefore the material that is used for making flexbile gear can replace the higher Chromador of prior art price by ordinary steel, can reduce cost; On the other hand, in motor, be provided with the non-zero starting that Hall element can be realized motor, reduce the wearing and tearing of motor, prolong the useful life of motor.
Claims (3)
1, a kind of harmonic brushless motor, include an axis that is fixedly installed in the electric machine casing, and be arranged on motor and harmonic drive on this axis, wherein, described motor includes rotor and motor stator, described harmonic drive includes harmonic oscillator, harmonic wave is wheel and harmonic wave flexbile gear just, described rotor and harmonic oscillator are fixedly set in one, and, described rotor, harmonic oscillator, harmonic wave flexbile gear and described axis are the concentric setting, it is characterized in that: described harmonic wave flexbile gear is provided with one and the unidirectional driver of this harmonic wave flexbile gear coaxial rotation at output, and the inner ring of this unidirectional driver is connected with power take off.
2, harmonic brushless motor according to claim 1, it is characterized in that: described unidirectional driver is a roller-type one way clutch, described harmonic wave flexbile gear is the thin-walled tubular, this one-way clutch includes shell, roller, spring, post alive and cross piece, wherein, described shell is fixedly connected on the tube of described harmonic wave flexbile gear at the end, offer spring base and wedge-shaped slot on the described cross piece, the described spring and the post of living are contained in the spring base, described roller is placed in the described wedge-shaped slot, and an end and the described roller of described post alive offset, one end of the other end and described spring offsets, and the other end of this spring is fixed in the described spring base.
3, harmonic brushless motor according to claim 1 and 2, it is characterized in that: also be provided with a Hall element in the described electric machine casing, a side of this Hall element also be provided with one can around the rotation of described axis and with the corresponding sensing magnet ring of this Hall element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201136304U CN201352736Y (en) | 2009-02-11 | 2009-02-11 | Harmonic wave brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201136304U CN201352736Y (en) | 2009-02-11 | 2009-02-11 | Harmonic wave brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201352736Y true CN201352736Y (en) | 2009-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201136304U Expired - Fee Related CN201352736Y (en) | 2009-02-11 | 2009-02-11 | Harmonic wave brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201352736Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013177886A1 (en) * | 2012-05-30 | 2013-12-05 | 中山大洋电机股份有限公司 | Dc brushless motor structure of hall element sensor |
| CN103545981A (en) * | 2013-10-17 | 2014-01-29 | 晁会岩 | Integral embedded motor |
| CN106253573A (en) * | 2016-10-18 | 2016-12-21 | 中国电子科技集团公司第二十研究所 | The motor integrating of integration reducer |
| CN107639427A (en) * | 2017-09-26 | 2018-01-30 | 广州市昊志机电股份有限公司 | Mechanical processing machine turntable |
| WO2021179366A1 (en) * | 2020-03-13 | 2021-09-16 | 珠海市钧兴机电有限公司 | Heteroaxial hybrid continuously variable transmission system, and power-assisted bicycle |
| CN114204746A (en) * | 2021-12-14 | 2022-03-18 | 北京航星传动科技有限公司 | Integrated steering engine device |
-
2009
- 2009-02-11 CN CNU2009201136304U patent/CN201352736Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013177886A1 (en) * | 2012-05-30 | 2013-12-05 | 中山大洋电机股份有限公司 | Dc brushless motor structure of hall element sensor |
| CN103545981A (en) * | 2013-10-17 | 2014-01-29 | 晁会岩 | Integral embedded motor |
| CN103545981B (en) * | 2013-10-17 | 2016-05-11 | 晁会岩 | A kind of one embeds motor |
| CN106253573A (en) * | 2016-10-18 | 2016-12-21 | 中国电子科技集团公司第二十研究所 | The motor integrating of integration reducer |
| CN106253573B (en) * | 2016-10-18 | 2019-01-25 | 中国电子科技集团公司第二十一研究所 | The motor integrating of integration reducer |
| CN107639427A (en) * | 2017-09-26 | 2018-01-30 | 广州市昊志机电股份有限公司 | Mechanical processing machine turntable |
| WO2021179366A1 (en) * | 2020-03-13 | 2021-09-16 | 珠海市钧兴机电有限公司 | Heteroaxial hybrid continuously variable transmission system, and power-assisted bicycle |
| CN114204746A (en) * | 2021-12-14 | 2022-03-18 | 北京航星传动科技有限公司 | Integrated steering engine device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO HANGZHOU BAY NEW ZONE BEIDOU MOTOR CO., LTD Free format text: FORMER OWNER: BEIDOU TECH CO., LTD., NINGBO Effective date: 20120814 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120814 Address after: 315336, No. 29 Xiao Tong Road, Hangzhou Bay New District, Zhejiang, Cixi Patentee after: Ningbo Hangzhou Wanxin Area Big Dipper Motor Co.,Ltd. Address before: 315336 Xiao Tong Road, Hangzhou Bay New District, Zhejiang, Cixi Patentee before: Ningbo Polaris Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20140211 |