CN204442086U - Electric bicycle compact wheel hub motor - Google Patents
Electric bicycle compact wheel hub motor Download PDFInfo
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- CN204442086U CN204442086U CN201520135518.6U CN201520135518U CN204442086U CN 204442086 U CN204442086 U CN 204442086U CN 201520135518 U CN201520135518 U CN 201520135518U CN 204442086 U CN204442086 U CN 204442086U
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- wheel hub
- planetary gear
- ring
- electric bicycle
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Abstract
The utility model discloses a kind of electric bicycle compact wheel hub motor, comprise main back shaft, be arranged on the hub shell on main back shaft, the motor be located in hub shell, planetary gear speed reducing mechanism and freewheel clutch by bearing, also comprise axis speed sensing device; It is characterized in that some planetary gears that described planetary gear speed reducing mechanism comprises central gear and is engaged with, described central gear is located on motor output shaft, and planetary gear is located on planet carrier, and described planet carrier is fixed or be integrally provided on main back shaft; Described freewheel clutch comprises inner ring and outer ring, and wherein inner ring and hub shell are fixed, and are integrally formed with ring gear inside outer ring, and this ring gear engages with described planetary gear.The inner space utilance of this wheel hub motor is higher, and configuration is more reasonable, and volume is less, and it is also more convenient to assemble, and can enhance productivity further, reduces and produces and maintenance cost.
Description
Technical field
the utility model belongs to hub motor structure technical field, is specifically related to a kind of electric bicycle compact wheel hub motor.
Background technology
hub motor structure on electric bicycle primarily of axis, the housing be arranged on by bearing on axis, be located at motor in housing and the parts such as planetary gear speed reducing mechanism and clutch formed, in order to further weight reduction, simplify assembling, the structure of this type of wheel hub motor often has very large room for improvement.
declare and the utility model patent of having authorized (patent No. is for 200920189579.5) in 2009.10.21 for our company, there is disclosed a kind of electric wheel hub, design core is that the planetary gear in planetary gear speed reducing mechanism and support thereof are fixed to freewheel clutch outer ring, make it together to operate with freewheel clutch outer ring, freewheel clutch and planetary mechanism are integrated, simplify both assembly structures, alleviate the overall weight of wheel hub motor.But in long-term use procedure, also expose some problems that this electric wheel hub exists:
1) motor is by the rotation (planetary gear engages with wheel hub ring gear) of planetary gear speed reducing mechanism Direct driver wheel hub, and freewheel clutch is independently preposition, do not bear the effect of transmission, and the rotation of wheel hub will be limited indirectly by planetary gear speed reducing mechanism, wheel hub internal structure is caused still to optimize not, volume is comparatively large, assembles loaded down with trivial details.
2) because planetary gear and support installing thereof are on freewheel clutch outer ring, not only make assembly structure loaded down with trivial details, and mean that the external diameter of planetary gear speed reducing mechanism is larger than clutch simultaneously, add that freewheel clutch is convexly placed in motor front portion, cause space, hub shell interior front space comparatively large, space utilization is unreasonable.And when large external diameter freewheel clutch changed by needs, often need the size increasing planetary gear speed reducing mechanism and even whole wheel hub, cause the inconvenience in Assembling Production.
in addition, equal desin speed sensing device on current wheel hub motor, usually comprise and be arranged on magnet ring inside wheel hub on middle shaft rotation component and the Hall element corresponding with magnet ring, shortcoming is once Hall element damages, need to take hub shell apart to keep in repair, comparatively loaded down with trivial details, not only increase maintenance cost, and easily cause the damage of Hall element.
Summary of the invention
the utility model object is: provide a kind of electric bicycle compact wheel hub motor, the inner space utilance of this wheel hub motor is higher, and it is more reasonable to configure, volume is less, it is also more convenient to assemble, and can enhance productivity further, reduces and produces and maintenance cost.
the technical solution of the utility model is: a kind of electric bicycle compact wheel hub motor, comprise main back shaft, be arranged on the hub shell on main back shaft, the motor be located in hub shell, planetary gear speed reducing mechanism and freewheel clutch by bearing, also comprise axis speed sensing device; It is characterized in that some planetary gears that described planetary gear speed reducing mechanism comprises central gear and is engaged with, described central gear is located on motor output shaft, and planetary gear is located on planet carrier, and described planet carrier is fixed or be integrally provided on main back shaft; Described freewheel clutch comprises inner ring and outer ring, and wherein inner ring and hub shell are fixed, and are integrally formed with ring gear inside outer ring, and this ring gear engages with described planetary gear.
further, motor described in the utility model is internal rotor outer stator structure, and main back shaft is fixed with stator support, and the stator of motor is fixed on this stator support.
further, planet carrier described in the utility model is fixed with described stator support or is integrally connected.
further, the inner ring of freewheel clutch described in the utility model and the end wall of hub shell are fixed.
further, planetary gear described in the utility model to be centrosymmetric distribution about central gear.
further, planetary quantity described in the utility model is 3.
further, the speed sensing device of axis described in the utility model comprises the magnet ring of being arranged by magnet steel uniform intervals and the Hall element coordinated with it, and described magnet ring is positioned at inside hub shell, and Hall element is positioned at outside hub shell.
further, described in the utility model, magnet ring is fixed in the inner end wall of hub shell, and main back shaft is fixed with Hall element mounting bracket, and described Hall element is fixed on this Hall element mounting bracket.
it may be noted that freewheel clutch in the utility model this as routine techniques, the utility model is only set up ring gear inside its outer ring, and does not make improvements for its agent structure and functional realiey mode thereof, all participates in prior art.
in the utility model, the inner ring of freewheel clutch and the fixing of hub shell can be that close-fitting is fixed, and also can design corresponding convex shoulder and keyway coordinates at inner ring and hub shell inwall, or the fixture such as direct screw or pin are fixed.
in the utility model, the lead-out wire of Hall element is electrically connected with the controller of electric bicycle, and its connection control technology is routine techniques, and the utility model is not described further.
the utility model has the advantages that:
1) this wheel hub motor that provides of the utility model, the improvement to our company's original product structure and optimization, it originally will to be located on hub shell inwall and to move to inside the outer ring of freewheel clutch with the ring gear of planetary gear speed reducing mechanism engaged transmission, make freewheel clutch while bearing " clutch " function own, also bear the direct-drive effect for hub shell.Be equivalent to incorporate multiple functional part, optimize the structural allocation of wheel hub motor inside, make its inner space utilance higher, structure is compacter, and volume is less, and weight is lighter.
2) compare original product, the utility model without the need to by planetary gear and support installing thereof on the outer ring of freewheel clutch, simplify the structure, make assembling more convenient, thus be conducive to enhancing productivity further, save and produce and maintenance cost.And planetary gear speed reducing mechanism and freewheel clutch inner ring engage the relation of mating, freewheel clutch is no longer convex is placed in planetary gear speed reducing mechanism front, but fully supports inside hub shell, and space availability ratio is higher, more compact structure.Simultaneously when changing large external diameter freewheel clutch because debugging needs, only need change the planetary size engaged with freewheel clutch inner ring, and without the need to changing the size of whole planetary gear speed reducing mechanism and even hub shell, more convenient for assembling and keeping in repair, also save cost.
3) in prioritization scheme of the present utility model, the Hall element corresponding with magnet ring is assemblied in the outside of hub shell by it, when Hall element has problems, can keep in repair without the need to taking whole hub shell apart to Hall element, it is more convenient to operate, and also more saves time.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the utility model is further described:
fig. 1 is the utility model external structure schematic diagram;
fig. 2 is main structure cutaway view of the present utility model;
fig. 3 is Fig. 1 left view;
fig. 4 is Fig. 1 right view;
fig. 5 is the A-A direction view (omission clutch part) of Fig. 2.
wherein: 1, main back shaft; 2, bearing; 3, hub shell; 4, motor; 4a, output shaft; 4b, rotor; 4c, stator; 5, freewheel clutch; 6, central gear; 7, planetary gear; 8, planet carrier; 9, inner ring; 10, outer ring; 10a, ring gear; 11, stator support; 12, magnet steel; 13, Hall element; 14, Hall element mounting bracket; 15, screw; 16, lead-out wire.
Embodiment
embodiment: shown in composition graphs 1 ~ Fig. 5, for a kind of embodiment of the utility model electric bicycle compact wheel hub motor, it equally has main back shaft 1 with routine techniques, main back shaft 1 is provided with the hub shell 3 that can rotate around it by bearing 2, from left to right set gradually freewheel clutch 5, planetary gear speed reducing mechanism and motor 4 in hub shell 3, axis speed sensing device is also installed simultaneously.
shown in concrete composition graphs 1 ~ Fig. 5, motor 4 described in the present embodiment is internal rotor 4b external stator 4c structure, and main back shaft 1 is fixed with stator support 11, and the stator 4c of motor 4 is fixed on this stator support 11; And fixing output shaft 4a on rotor 4b, and between output shaft 4a and stator support 11, be equipped with bearing (not marking in figure).
the main improvement of the present embodiment is the assembly structure of freewheel clutch 5 and planetary gear speed reducing mechanism.Planetary gear speed reducing mechanism is wherein by central gear 6 and 3 planetary gears 7 be engaged with, and the planet carrier 8 installing planetary gear 7 is formed jointly, 3 planetary gears 7 in the present embodiment to be centrosymmetric distribution (specifically as shown in Figure 5) about central gear 6, and be duplicate gear, wherein large gear engages with central gear 6, and little gear engages with the ring gear 10a on freewheel clutch 5 outer ring 10.Wherein said central gear 6 is located on the output shaft 4a of motor 4, and planetary gear 7 is located on planet carrier 8, and described planet carrier 8 is integrally provided on main back shaft 1, and in the present embodiment, this planet carrier 8 is connected with described stator support 11 one simultaneously.
described freewheel clutch 5 has inner ring 9 and outer ring 10, wherein inner ring 9 and the left side end wall of hub shell 3 are by three screws 15 fixing (specifically as shown in Figure 3), and as shown in Figure 2, inside outer ring 10, being integrally formed with ring gear 10a, this ring gear 10a all engages with described planetary gear 7.
axis speed sensing device in the present embodiment is configured to: the magnet ring of being arranged by magnet steel 12 uniform intervals and the Hall element 13 coordinated with it, described magnet ring is positioned at inside hub shell 3, specifically be fixed in the right side inner end wall of hub shell 3, see shown in Fig. 2 and Fig. 4; And Hall element 13 is positioned at outside hub shell 3, main back shaft 1 is fixed with Hall element mounting bracket 14, described Hall element 13 to be just fixed on this Hall element mounting bracket 14 and relative with magnet ring.The lead-out wire 16 of Hall element 13 is electrically connected with the controller of electric bicycle, and its connection control technology is routine techniques, is not described further in the present embodiment.
certain above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All modifications done according to the Spirit Essence of the utility model main technical schemes, all should be encompassed within protection range of the present utility model.
Claims (8)
1. an electric bicycle compact wheel hub motor, comprise main back shaft (1), the hub shell (3) be arranged on by bearing (2) on main back shaft (1), the motor (4) be located in hub shell (3), planetary gear speed reducing mechanism and freewheel clutch (5), also comprise axis speed sensing device; It is characterized in that some planetary gears (7) that described planetary gear speed reducing mechanism comprises central gear (6) and is engaged with, described central gear (6) is located on motor (4) output shaft (4a), and planetary gear (7) is located on planet carrier (8), described planet carrier (8) is fixing or be integrally provided on main back shaft (1); Described freewheel clutch (5) comprises inner ring (9) and outer ring (10), and wherein inner ring (9) is fixed with hub shell (3), and outer ring (10) inner side is integrally formed with ring gear (10a), and this ring gear (10a) engages with described planetary gear (7).
2. electric bicycle compact wheel hub motor according to claim 1, it is characterized in that described motor (4) is for internal rotor (4b) external stator (4c) structure, main back shaft (1) is fixed with stator support (11), the stator (4c) of motor (4) is fixed on this stator support (11).
3. electric bicycle compact wheel hub motor according to claim 2, is characterized in that described planet carrier (8) is fixing with described stator support (11) or be integrally connected.
4. electric bicycle compact wheel hub motor according to claim 1, is characterized in that the inner ring (9) of described freewheel clutch (5) and the end wall of hub shell (3) are fixed.
5. electric bicycle compact wheel hub motor according to claim 1, is characterized in that described planetary gear (7) to be centrosymmetric distribution about central gear (6).
6. electric bicycle compact wheel hub motor according to claim 5, is characterized in that the quantity of described planetary gear (7) is 3.
7. electric bicycle compact wheel hub motor according to claim 1, it is characterized in that described axis speed sensing device comprises the magnet ring of being arranged by magnet steel (12) uniform intervals and the Hall element (13) coordinated with it, described magnet ring is positioned at hub shell (3) inner side, and Hall element (13) is positioned at hub shell (3) outside.
8. electric bicycle compact wheel hub motor according to claim 7, it is characterized in that described magnet ring is fixed in the inner end wall of hub shell (3), and main back shaft (1) being fixed with Hall element mounting bracket (14), described Hall element (13) is fixed on this Hall element mounting bracket (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135518.6U CN204442086U (en) | 2015-03-11 | 2015-03-11 | Electric bicycle compact wheel hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135518.6U CN204442086U (en) | 2015-03-11 | 2015-03-11 | Electric bicycle compact wheel hub motor |
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| Publication Number | Publication Date |
|---|---|
| CN204442086U true CN204442086U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520135518.6U Active CN204442086U (en) | 2015-03-11 | 2015-03-11 | Electric bicycle compact wheel hub motor |
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| CN (1) | CN204442086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753244A (en) * | 2015-03-11 | 2015-07-01 | 苏州盛亿电机有限公司 | Compact type hub motor of electric bicycle |
| CN109861449A (en) * | 2017-11-30 | 2019-06-07 | 宁波麦思动力系统有限公司 | A kind of hub motor and electric bicycle |
-
2015
- 2015-03-11 CN CN201520135518.6U patent/CN204442086U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753244A (en) * | 2015-03-11 | 2015-07-01 | 苏州盛亿电机有限公司 | Compact type hub motor of electric bicycle |
| CN109861449A (en) * | 2017-11-30 | 2019-06-07 | 宁波麦思动力系统有限公司 | A kind of hub motor and electric bicycle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |