CN216216316U - Power motor device with compact structure - Google Patents
Power motor device with compact structure Download PDFInfo
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- CN216216316U CN216216316U CN202122664555.4U CN202122664555U CN216216316U CN 216216316 U CN216216316 U CN 216216316U CN 202122664555 U CN202122664555 U CN 202122664555U CN 216216316 U CN216216316 U CN 216216316U
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- outer rotor
- tire
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- wheel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The application relates to a power motor device with a compact structure, which relates to the technical field of electric vehicles and comprises a rear fork arranged on an electric vehicle and an outer rotor motor arranged on the rear fork, wherein the outer rotor of the outer rotor motor is coaxially connected with a rear wheel, and the rear wheel is connected onto the outer rotor of the outer rotor motor through bolts. This application is through with rear wheel bolted connection on the external rotor of external rotor electric machine for the tire breaks away from external rotor electric machine and electric motor car alone, need not to pull down external rotor electric machine and tire together, reduces the weight that the rear wheel was pulled down and will be dismantled, makes the dismantlement of tire more convenient and swift, thereby has the advantage of being convenient for carry out the maintenance to the rear wheel tire.
Description
Technical Field
The application relates to the technical field of electric vehicles, in particular to a power motor device with a compact structure.
Background
With the development of low-carbon economy, more and more people select bicycles or electric vehicles to meet the requirements of energy conservation and emission reduction at present, the pollution is low, zero emission is realized, and the labor-saving and quick travel mode of the electric vehicles is the best choice for most people.
When a traditional electric vehicle is driven, the traditional electric vehicle is driven by a motor wheel, the motor and the rear wheel are installed at the axle center of the rear wheel of the electric vehicle and are coaxial, so that the motor is located at the axle center of the rear wheel, and the motor and the rear wheel are required to be disassembled and assembled together.
With the above-described related art, the inventors consider that: when the rear wheel tire needs to be maintained, the whole tire and the motor need to be disassembled, so that the motor needs to be disassembled together with the tire, and the heavy weight causes the operation to be troublesome.
Disclosure of Invention
In order to facilitate the maintenance of rear wheel tires, the power motor device with a compact structure is provided.
The application provides a compact structure's power motor device adopts following technical scheme:
a power motor device with a compact structure comprises a rear fork arranged on an electric vehicle and an outer rotor motor arranged on the rear fork, wherein a rear wheel is coaxially connected to an outer rotor of the outer rotor motor, and the rear wheel is connected to an outer rotor of the outer rotor motor through bolts.
By adopting the technical scheme, when the rear wheel tire needs to be maintained, the bolt connection between the rear wheel and the outer rotor of the outer rotor motor is detached, so that the tire is separated from the outer rotor motor and the electric vehicle independently, the outer rotor motor and the tire are not required to be detached together, the weight to be detached when the rear wheel is detached is reduced, the tire is detached more conveniently and quickly, and the rear wheel tire is convenient to maintain.
Optionally, the rear wheel includes a tire and a hub, the hub is located in the tire, an accommodating cavity for the outer rotor motor to be placed in is reserved in the tire, and the hub is connected to the outer rotor of the outer rotor motor by bolts.
By adopting the technical scheme, when the rear wheel and the outer rotor motor are installed, the wheel hub moves along the axis direction of the outer rotor motor until the wheel hub is sleeved on the outer rotor motor, so that the outer rotor motor extends into the accommodating cavity, the whole outer rotor motor is positioned in the tire and coaxially connected with the wheel hub, the tire and the outer rotor motor are integrated, the space occupied by the outer rotor motor in the tire is reduced, and the structural compactness of the outer rotor motor for driving the wheel hub to rotate is improved.
Optionally, the wheel hub includes the rim with tire matched with, coaxial coupling in the rim of outer rotor, connect a plurality of spokes on rim side wall on the rim, the spoke is kept away from the one end of rim and is connected with the rim, the spoke is towards keeping away from the direction of tire and is followed rim axial lead convergent.
Through adopting above-mentioned technical scheme, when wheel hub and external rotor motor coaxial coupling, the spoke of convergent shape reduces self in the outstanding volume of tire one side to the inner space that the chamber was held in the increase, thereby reaches the effect that reduces the shared space of wheel hub.
Optionally, the wheel disc is recessed into the tyre and forms a groove with the spoke, and the bolt is located in the groove.
Through adopting above-mentioned technical scheme, when with rim plate and external rotor motor bolted connection, the bolt passes rim plate and external rotor threaded connection of external rotor motor for the tip of bolt is located the recess, in order to reduce the protruding volume of bolt from the rim plate, makes the bolt receive wheel hub's protection.
Optionally, a positioning shaft is arranged on the outer rotor of the outer rotor motor, the positioning shaft is slidably inserted into the axis of the wheel disc, and the bolt on the wheel disc is aligned with the bolt hole on the outer rotor.
By adopting the technical scheme, when the wheel disc is coaxially connected with the outer rotor motor, the positioning shaft on the outer rotor is inserted into the axis of the wheel disc, so that the bolt on the wheel disc is aligned with the bolt hole of the outer rotor, the bolt is accurately screwed on the outer rotor, and the bolt is conveniently screwed into the outer rotor.
Optionally, a plurality of positioning keys are arranged on the circumferential side wall of the positioning shaft, and positioning grooves for the positioning keys to be clamped are formed in the wheel disc.
Through adopting above-mentioned technical scheme, when inserting the rim plate axle center with the location axle, will fix a position epaxial positioning key and the constant head tank on the rim plate and aim at and insert again, make bolt on the rim plate and the bolt hole on the outer son of biography simultaneously align to through positioning key and constant head tank increase external rotor and the stability of coaxial coupling between the rim plate.
Optionally, a weight reduction groove is formed in one side of the spoke, which faces away from the outer rotor motor.
By adopting the technical scheme, the weight of the spoke is reduced by the weight reduction groove so as to reduce the weight of the rear wheel, and the rotating speed of the rear wheel driven by the outer rotor motor is improved.
Optionally, an outer rotor of the outer rotor motor is provided with an accommodating groove for embedding the spoke.
Through adopting above-mentioned technical scheme, when overlapping wheel hub on external rotor electric machine, the navigation key aims at the constant head tank, the bolt aims at the bolt hole, then moves wheel hub towards the back vent for in the spoke imbeds the holding tank on the external rotor, in order to further reduce external rotor electric machine in the tire towards the volume that back vent one side exposes, improve external rotor electric machine and tire coaxial coupling's compactedness, strengthen the connection steadiness between external rotor and the wheel hub simultaneously.
In summary, the present application includes at least one of the following beneficial technical effects:
the rear wheel is connected to the outer rotor of the outer rotor motor through the bolts, so that the tire is separated from the outer rotor motor and the electric vehicle independently, the outer rotor motor and the tire do not need to be dismounted together, the dismounting weight of the rear wheel is reduced, the tire is dismounted more conveniently and quickly, and the rear wheel tire is convenient to maintain;
the tire and the outer rotor motor are integrated by arranging the accommodating cavity, and the space occupied by the outer rotor motor at the tire is reduced, so that the structural compactness of the outer rotor motor driving hub to rotate is improved;
the end parts of the bolts are positioned in the grooves by arranging the grooves, so that the volume of the bolts protruding from the wheel disc is reduced, and the bolts are protected by the wheel hub;
through setting up the holding tank, further reduce the volume that external rotor electric machine exposes towards back fork one side in the tire, improve external rotor electric machine and tire coaxial coupling's compactedness, strengthen the connection steadiness between external rotor and the wheel hub simultaneously.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is an exploded view of an embodiment of the present application for showing a receiving tank.
Description of reference numerals: 1. a rear fork; 2. an outer rotor motor 21, an outer rotor; 211. positioning the shaft; 212. a positioning key; 213. accommodating grooves; 3. a rear wheel; 31. a hub; 311. a rim; 312. a wheel disc; 313. a spoke; 314. a weight reduction groove; 315. a bolt; 316. a groove; 317. positioning a groove; 32. a tire; 321. a receiving cavity.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a power motor device with a compact structure.
Referring to fig. 1, the power motor device comprises a rear fork 1 fixedly connected to the body of the electric vehicle, and an outer rotor motor 2 fixedly connected to the rear fork 1, wherein the outer rotor motor 2 comprises an internal stator, and an outer rotor 21 rotatably sleeved outside the stator, a stator shaft penetrates through the outer rotor 21 and the rear fork 1 to be fixedly connected, the outer rotor 21 can be disassembled and is coaxially connected with a rear wheel 3, so that the rear wheel 3 can be disassembled without disassembling the rear tire and the outer rotor motor 2 together, and meanwhile, the outer rotor motor 2 drives the outer rotor 21 to rotate and then drives the rear wheel 3 to rotate so that the electric vehicle can move forwards.
Referring to fig. 1 and 2, the rear wheel 3 includes a wheel hub 31 and a tire 32 sleeved on the wheel hub 31, the wheel hub 31 is located on one side of the outer rotor motor 2, the wheel hub 31 includes a rim 311 matched with the tire 32, a wheel disc 312 coaxially connected to the outer rotor 21, and a plurality of spokes 313 integrally formed on a circumferential side wall of the wheel disc 312, one end of the spoke 313 far away from the wheel disc 312 is connected with the rim 311, a weight reduction groove 314 is formed on one side of the spoke 313 back to the outer rotor motor 2, and the spoke 313, the rim 311, the wheel disc 312, and the spoke 313 are integrally formed.
Referring to fig. 1 and 2, the spoke 313 is tapered along the axial line of the wheel disc 312 in the direction away from the tire 32, so that a receiving cavity 321 for the outer rotor motor 2 to be placed is left in the rear wheel, the whole outer rotor motor 2 is located in the tire 32 and coaxially connected with the wheel hub 31, the rear wheel and the outer rotor motor 2 are integrated, and the space occupied by the outer rotor motor 2 at the tire 32 is reduced.
Referring to fig. 2, a plurality of bolts 315 are arranged on the wheel disc 312 along the circumferential direction, the bolts 315 are screwed on the side wall of the outer rotor 21 facing the wheel disc 312, the wheel disc 312 is recessed towards the inside of the tire 32 and forms a groove 316 with the spoke 313, and the bolts 315 are all positioned in the groove 316, so that the volume of the bolts 315 protruding from the spoke 313 is reduced. Coaxial fixedly connected with location axle 211 on the outer rotor 21 lateral wall, the axle center of rim plate 312 is worn to locate by location axle 211, has seted up a plurality of positioning keys 212 on the circumference lateral wall of location axle 211, has seted up the constant head tank 317 that supplies positioning key 212 card to go into in the rim plate 312, increases outer rotor 21 and rim plate 312 between coaxial coupling's steadiness.
Referring to fig. 2, the side wall of outer rotor 21 facing wheel disc 312 is formed with receiving grooves 213 into which spokes 313 are fitted, so that the volume of outer rotor motor 2 exposed to the side of tire 32 facing rear fork 1 is reduced. After positioning shaft 211 is inserted into disk 312 such that positioning keys 212 are caught in positioning grooves 317, spokes 313 are fitted into receiving grooves 213 such that bolts 315 on disk 312 and bolt holes on outer rotor 21 are aligned to screw bolts 315 into outer rotor 21.
The implementation principle of the power motor device with a compact structure in the embodiment of the application is as follows: when the tire 32 of the rear wheel 3 needs to be repaired, the bolts 315 are screwed to release the screw connection between the disk 312 and the outer rotor 21, so that the rear wheel is separately removed from the outer rotor 21 after the spokes 313 are disengaged from the receiving grooves 213. After replacing the tire 32, the positioning shaft 211 is inserted into the wheel disc 312 so that the positioning key 212 is caught in the positioning groove 317, the wheel hub 31 is pushed toward the outer rotor motor 2 so that the spoke 313 is caught in the receiving groove 213, and the bolt 315 on the wheel disc 312 is inserted in alignment with the bolt hole on the side wall of the outer rotor 21, and then the bolt 315 is tightened to connect the tire 32 and the outer rotor 21 coaxially. In the process of replacing and maintaining the tire 32, the outer rotor motor 2 and the tire 32 do not need to be detached together, the weight required for detaching the rear wheel 3 is reduced, the tire 32 is more convenient and quicker to detach, and the tire 32 of the rear wheel 3 is convenient to maintain.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A compact power motor device is characterized in that: the electric bicycle comprises a rear fork (1) arranged on an electric bicycle and an outer rotor motor (2) arranged on the rear fork (1), wherein a rear wheel (3) is coaxially connected to an outer rotor (21) of the outer rotor motor (2), and the rear wheel (3) is connected to the outer rotor (21) of the outer rotor motor (2) through bolts.
2. A compact power motor apparatus according to claim 1, wherein: the rear wheel (3) comprises a tire (32) and a wheel hub (31), the wheel hub (31) is located in the tire (32), an accommodating cavity (321) for the outer rotor motor (2) to be placed in is reserved in the tire (32), and the wheel hub (31) is connected to an outer rotor (21) of the outer rotor motor (2) through bolts.
3. A compact power motor apparatus according to claim 2, wherein: wheel hub (31) include with tire (32) matched with rim (311), coaxial coupling in rim (312) of outer rotor (21), connect a plurality of spokes (313) on rim (312) side wall, the one end and rim (311) that rim (312) are kept away from to spoke (313) are connected, spoke (313) are towards keeping away from tire (32) the direction along rim (312) axial lead convergent.
4. A compact power motor apparatus according to claim 3, wherein: the wheel disc (312) is recessed towards the tire (32) and forms a groove (316) with the spoke (313), and the bolt (315) is located in the groove (316).
5. A compact power motor apparatus according to claim 3, wherein: the outer rotor motor is characterized in that a positioning shaft (211) is arranged on an outer rotor (21) of the outer rotor motor (2), the positioning shaft (211) penetrates through the axis of the wheel disc (312) in a sliding mode, and a bolt (315) on the wheel disc (312) is aligned with a bolt hole on the outer rotor (21).
6. A compact power motor apparatus according to claim 5, wherein: the positioning shaft (211) is provided with a plurality of positioning keys (212) on the circumferential side wall, and positioning grooves (317) for the positioning keys (212) to be clamped are formed in the wheel disc (312).
7. A compact power motor apparatus according to claim 3, wherein: and a lightening groove (314) is formed in one side of the spoke (313) opposite to the outer rotor motor (2).
8. A compact power motor apparatus according to claim 3, wherein: and an outer rotor (21) of the outer rotor motor (2) is provided with an accommodating groove (213) for embedding the spoke (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122664555.4U CN216216316U (en) | 2021-11-03 | 2021-11-03 | Power motor device with compact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122664555.4U CN216216316U (en) | 2021-11-03 | 2021-11-03 | Power motor device with compact structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216216316U true CN216216316U (en) | 2022-04-05 |
Family
ID=80899806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122664555.4U Active CN216216316U (en) | 2021-11-03 | 2021-11-03 | Power motor device with compact structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216216316U (en) |
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2021
- 2021-11-03 CN CN202122664555.4U patent/CN216216316U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 318000 1-1, No. 899, Juying Road, East New Area, Taizhou bay new area, Taizhou City, Zhejiang Province Patentee after: Zhejiang Frank morini new energy Co.,Ltd. Address before: 318000 6-1, No. 2688, Juhai Avenue, East New Area, Taizhou bay new area, Taizhou City, Zhejiang Province Patentee before: Zhejiang Frank morini new energy Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |