WO2019114592A1 - Moteur à moyeu miniature à arbre traversant pour bicyclette électrique - Google Patents

Moteur à moyeu miniature à arbre traversant pour bicyclette électrique Download PDF

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Publication number
WO2019114592A1
WO2019114592A1 PCT/CN2018/119421 CN2018119421W WO2019114592A1 WO 2019114592 A1 WO2019114592 A1 WO 2019114592A1 CN 2018119421 W CN2018119421 W CN 2018119421W WO 2019114592 A1 WO2019114592 A1 WO 2019114592A1
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WO
WIPO (PCT)
Prior art keywords
gear
planet
shaft
way clutch
supported
Prior art date
Application number
PCT/CN2018/119421
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English (en)
Chinese (zh)
Inventor
严振华
Original Assignee
天津迪思科博科技发展有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN201711326535.8A external-priority patent/CN107878664B/zh
Priority claimed from CN201721730500.6U external-priority patent/CN207860386U/zh
Application filed by 天津迪思科博科技发展有限公司 filed Critical 天津迪思科博科技发展有限公司
Publication of WO2019114592A1 publication Critical patent/WO2019114592A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/11—Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric clutches

Definitions

  • the invention belongs to the field of electric bicycles, and in particular relates to a through-shaft micro-hub motor of an electric bicycle.
  • a common method for miniaturization is to use a double planetary gear reduction structure. That is, the sun gear meshes with the large gear of the double planetary gear, and the double planetary gear pinion meshes with the inner ring gear. If the size of the motor is small, it is necessary to further increase the reduction ratio, that is, the number of sun gears needs to be reduced, but the sun gear is limited by the diameter of the main shaft (the main shaft passes through the sun gear).
  • the proposed solution is to use a half shaft (one shaft).
  • a retarding hub motor is disclosed in the patent document publication number CN201710112694, comprising: a left half shaft and a right half shaft disposed coaxially; a hub that is sleeved outside the left and right axles by a first support bearing; a rotor and a stator in the hub, wherein the stator is fixed to the left half shaft; a flywheel connected to the outside of the right half shaft through the second support bearing; a one-way clutch coaxially arranged with the right half shaft, the one-way clutch including the mutual coupling a clutch inner ring and a clutch outer ring, wherein the inner clutch ring is fixed to the hub, an inner ring gear is integrally formed on the outer ring of the clutch; and a planetary gear speed reduction mechanism connected between the rotor
  • the hub motor of this type is limited in size by the overall size, the semi-axle method has disadvantages such as high processing precision, high assembly difficulty, high production cost, and poor reliability with respect to the through shaft.
  • the applicant of the present invention discloses a micro-hub motor including a main shaft, a stator, a rotor, a motor casing, an inner ring gear, an eccentric shaft and a planetary gear, and the internal ring gear meshes with the planetary gear, the planet, in the patent document publication No. 107017733A.
  • the gear center hole is supported on the eccentric shaft by the planetary gear support bearing, and the eccentric shaft is supported on the main shaft through the eccentric shaft support bearing and the rotor bearing, the planetary gear has a T-shaped stepped shaft structure, and the gear disc and the pin shaft disc form an integral planet
  • the pin and pin end face are evenly distributed with a plurality of pin shafts, and the left side of the spindle shaft is connected with a stop turntable, and the end surface of the stop turntable is evenly distributed with a plurality of countersunk holes, and the turntable is inserted through the counterbore with a pin-constrained disc, and the pin shaft is constrained.
  • the front end surface of the disc is provided with a stud corresponding to the counterbore position, and the stud of the pin constraining disc is inserted into the counterbore of the stop disc to form a coupling, and the pin constraining disc is provided with a plurality of pin holes on the back side of the disc, and the pin shaft The hole is inserted into the pin shaft of the pinion disc of the planetary gear.
  • the invention realizes the goal of a through-shaft micro-motor with an outer diameter of the motor of ⁇ 65-70 mm. Production technology has found that the technology still has shortcomings. When the planetary gear meshes with the inner ring gear, a radial force is generated.
  • the eccentric shaft supported by the bearing on the main shaft increases the radial force, which causes the noise to be large when the motor is working. This is a problem that the designer does not want to have. Designers need to address a more complete miniature hub motor that can be miniaturized and adopts a through-axis approach.
  • the object of the present invention is to overcome the deficiencies of the above-mentioned technologies, and to provide a through-shaft micro-hub motor for an electric bicycle.
  • the diameter of the motor casing is less than 74 mm, and the vibration noise of the motor is greatly reduced. .
  • a through-shaft micro-hub motor of an electric bicycle comprising a main shaft, a stator, a rotor, a casing, an internal ring gear and a planetary gear
  • the stator is coupled with the main shaft, the outer casing and The end cover is supported on the main shaft by the end cover supporting bearing and the outer casing supporting bearing
  • the rotor is fixed with a double-stage speed reducing mechanism
  • the double-stage speed reducing mechanism includes first and second sun gears, first and second planets a wheel, first and second planet carriers and a one-way clutch, wherein the first sun gear is fixed to the rotor, the first sun gear is meshed with the first planet gear, and the first planet gear is supported by the first planet gear support bearing at the first On the first planetary axle of the planet carrier, the first planetary gear meshes with the inner ring gear; the first planet carrier is fixed with the second sun gear, the second sun gear meshes
  • the inner circumference of the second planet carrier is evenly distributed with the ratchet teeth of the one-way clutch, the inner ring of the one-way clutch is fixed on the main shaft, the inner ring of the one-way clutch is provided with a jack groove, and the jack is provided with a jack to form an integrated planet.
  • One-way clutch structure is evenly distributed with the ratchet teeth of the one-way clutch, the inner ring of the one-way clutch is fixed on the main shaft, the inner ring of the one-way clutch is provided with a jack groove, and the jack is provided with a jack to form an integrated planet.
  • One-way clutch structure is evenly distributed with the ratchet teeth of the one-way clutch, the inner ring of the one-way clutch is fixed on the main shaft, the inner ring of the one-way clutch is provided with a jack groove, and the jack is provided with a jack to form an integrated planet.
  • One-way clutch structure is evenly distributed with the ratchet teeth of the one-
  • the one-way clutch uses a pawl type one-way clutch or a wedge type one-way clutch.
  • the number of the first and second planetary wheels is 3-5 each.
  • the through-shaft two-stage speed-regulating power output mechanism of the invention can not only ensure the diameter reduction of the motor, but also adopt a through-shaft method to avoid the processing existing in the split-type half-axis structure.
  • the precision requirements are high, the assembly is difficult, and the production cost is high; more importantly, the structure can greatly reduce the motor vibration noise through the floating connection of the first planet carrier and the double-stage speed reduction mechanism.
  • Figure 1 is a schematic view of the structure of the present invention
  • FIG. 2 is a schematic structural view of the one-way clutch of FIG. 1.
  • the present embodiment provides a through-shaft micro-hub motor for an electric bicycle, comprising a main shaft 1, a stator 2, a rotor 3, a casing 19, an internal ring gear 7, an end cover 21 and planetary gears, and the stator Bonded with the main shaft, one end of the outer casing is connected to the end cover, and the outer casing and the end cover are supported on the main shaft through the end cover support bearing 22 and the outer casing support bearing 20.
  • the rotor is supported on the main shaft by the rotor support bearing 4, and the rotor is fixed with double a stage reduction mechanism comprising first and second sun gears 5, 11, first and second planet gears 6, 12, first and second planet carriers 10, 15, and a one-way clutch, said first
  • the sun gear is fixed to the rotor, the first sun gear meshes with the first planet gear, and the first planet gear is supported by the first planet gear support bearing 8 on the first planet gear shaft 9 of the first planet carrier, the first planet gear and the inner
  • the ring gear is meshed;
  • the first planet carrier is fixed with a second sun gear, the second sun gear meshes with the second planet gear, the second planet gear meshes with the ring gear, and the second planet gear is supported by the second planet gear
  • the bearing 13 supports the second planetary axle 1 of the second planet carrier 4, the inner ring of the second planet carrier is supported on the main shaft by the second carrier inner support bearing 17, and the outer ring is supported on the outer casing by the second carrier outer support bearing 16, and the
  • the preferred embodiment of the present invention is that the inner circumference of the second planet carrier is evenly distributed with the ratchet teeth 15-1 of the one-way clutch, and the one-way clutch inner ring 18 is fixed on the main shaft, the one-way clutch
  • the inner ring is provided with a jacking groove 18-1, and the jack is provided with a jack 23 to constitute an integrated planetary carrier one-way clutch structure.
  • the one-way clutch adopts a pawl type one-way clutch or a wedge type one-way clutch, and the one-way clutch can also be formed into an integral unit, and is screwed on the inner circumference of the second planet carrier through the outer casing.
  • the sun gear is input and the ring gear is output.
  • the direction of the second planet carrier to rotate is opposite to the direction of rotation of the ring gear.
  • the second planet carrier stops rotating under the action of the one-way clutch, and the planetary gear can drive the ring gear to transmit power. .
  • the ring gear drives the planetary gear and the carrier to rotate, and the second planet carrier rotates in the same direction as the ring gear, and the one-way clutch slips.
  • the two planet carriers are free to rotate, so that the rotor of the motor is not rotated, that is, electromagnetic damping is not generated, and riding is more brisk.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un moteur de moyeu miniature à arbre traversant pour une bicyclette électrique, comprenant un stator (2) et un rotor (3), un mécanisme de réduction de vitesse à deux étages étant fixé au rotor (3). Une première roue solaire (5) du mécanisme de réduction de vitesse à deux étages est fixée au rotor (3), et la première roue solaire (5) s'engrène avec un premier pignon planétaire (6), le premier pignon planétaire (6) étant supporté sur un premier arbre de pignon planétaire (9) au moyen d'un palier. Une deuxième roue solaire (11) est fixée sur un premier cadre planétaire (10), la deuxième roue solaire (11) s'engrenant avec un deuxième pignon planétaire (12), et les premier et deuxièmes pignons planétaires (6, 12) s'engrenant avec une couronne à denture intérieure (7). Le deuxième pignon planétaire (12) est supporté sur un deuxième arbre de pignon planétaire (14) au moyen d'un palier, et une bague intérieure d'un deuxième cadre planétaire (15) est supportée sur un arbre principal (1) au moyen d'un palier, tandis qu'une bague extérieure est supportée sur un carter extérieur au moyen d'un palier. Un embrayage unidirectionnel est fixé sur le deuxième cadre planétaire (15), et le deuxième cadre planétaire (15) forme un mécanisme de sortie de puissance de réduction de vitesse à deux étages à arbre traversant. Les avantages sont les suivants : le mécanisme de sortie de puissance de réduction de vitesse à deux étages à arbre traversant réduit la taille du diamètre d'un moteur, et l'arbre traversant peut également être utilisé pour surmonter les défauts dans une structure à demi-axe fendu; et le bruit provenant du moteur vibrant est réduit.
PCT/CN2018/119421 2017-12-13 2018-12-05 Moteur à moyeu miniature à arbre traversant pour bicyclette électrique WO2019114592A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201711326535.8 2017-12-13
CN201721730500.6 2017-12-13
CN201711326535.8A CN107878664B (zh) 2017-12-13 2017-12-13 电动自行车的通轴式微型轮毂电机
CN201721730500.6U CN207860386U (zh) 2017-12-13 2017-12-13 电动自行车的通轴式微型轮毂电机

Publications (1)

Publication Number Publication Date
WO2019114592A1 true WO2019114592A1 (fr) 2019-06-20

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PCT/CN2018/119421 WO2019114592A1 (fr) 2017-12-13 2018-12-05 Moteur à moyeu miniature à arbre traversant pour bicyclette électrique

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WO (1) WO2019114592A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI786567B (zh) * 2021-03-11 2022-12-11 宏國學校財團法人宏國德霖科技大學 具一階漸開線少齒差行星齒輪減速傳動機構之外轉子式輪轂電機的電動自行車助力裝置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2304211Y (zh) * 1997-06-03 1999-01-13 金华市金信科技风险投资管理有限公司 一种电机传动轮装置
CN2702519Y (zh) * 2004-04-30 2005-05-25 上海伟星电机厂 电动自行车轮毂电动机
WO2006076321A2 (fr) * 2005-01-13 2006-07-20 The Timken Company Dispositif electrique d'entrainement de moyeu de roue a rapport de reduction eleve
CN202686672U (zh) * 2012-07-20 2013-01-23 新安乃达驱动技术(上海)有限公司 电动自行车用电机驱动装置
CN104079116A (zh) * 2014-07-21 2014-10-01 严振华 电动自行车用可变减速比的轮毂电机
CN205911895U (zh) * 2016-08-08 2017-01-25 天津迪思科博科技发展有限公司 电动自行车微型中置电机
CN106655613A (zh) * 2016-11-24 2017-05-10 重庆大学 两轮电动车用双级减速轴承式轮毂电机
CN107878664A (zh) * 2017-12-13 2018-04-06 天津迪思科博科技发展有限公司 电动自行车的通轴式微型轮毂电机
CN207860386U (zh) * 2017-12-13 2018-09-14 天津迪思科博科技发展有限公司 电动自行车的通轴式微型轮毂电机

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2304211Y (zh) * 1997-06-03 1999-01-13 金华市金信科技风险投资管理有限公司 一种电机传动轮装置
CN2702519Y (zh) * 2004-04-30 2005-05-25 上海伟星电机厂 电动自行车轮毂电动机
WO2006076321A2 (fr) * 2005-01-13 2006-07-20 The Timken Company Dispositif electrique d'entrainement de moyeu de roue a rapport de reduction eleve
CN202686672U (zh) * 2012-07-20 2013-01-23 新安乃达驱动技术(上海)有限公司 电动自行车用电机驱动装置
CN104079116A (zh) * 2014-07-21 2014-10-01 严振华 电动自行车用可变减速比的轮毂电机
CN205911895U (zh) * 2016-08-08 2017-01-25 天津迪思科博科技发展有限公司 电动自行车微型中置电机
CN106655613A (zh) * 2016-11-24 2017-05-10 重庆大学 两轮电动车用双级减速轴承式轮毂电机
CN107878664A (zh) * 2017-12-13 2018-04-06 天津迪思科博科技发展有限公司 电动自行车的通轴式微型轮毂电机
CN207860386U (zh) * 2017-12-13 2018-09-14 天津迪思科博科技发展有限公司 电动自行车的通轴式微型轮毂电机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI786567B (zh) * 2021-03-11 2022-12-11 宏國學校財團法人宏國德霖科技大學 具一階漸開線少齒差行星齒輪減速傳動機構之外轉子式輪轂電機的電動自行車助力裝置

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