WO2016086526A1 - 一种用于智能自行车的中置式双动力驱动装置 - Google Patents

一种用于智能自行车的中置式双动力驱动装置 Download PDF

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Publication number
WO2016086526A1
WO2016086526A1 PCT/CN2015/071271 CN2015071271W WO2016086526A1 WO 2016086526 A1 WO2016086526 A1 WO 2016086526A1 CN 2015071271 W CN2015071271 W CN 2015071271W WO 2016086526 A1 WO2016086526 A1 WO 2016086526A1
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Prior art keywords
shaft
inner ring
gear
output
ring gear
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Application number
PCT/CN2015/071271
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English (en)
French (fr)
Inventor
唐光庆
Original Assignee
唐光庆
邓维
曾勇
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Application filed by 唐光庆, 邓维, 曾勇 filed Critical 唐光庆
Publication of WO2016086526A1 publication Critical patent/WO2016086526A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40Rider propelled cycles with auxiliary electric motor

Definitions

  • the present invention relates to a novel intelligent power assist bicycle, and more particularly to a bicycle dual power driving device.
  • the utility model overcomes the deficiencies of the prior art, and provides a simple structure, low cost, small volume, light weight, and can effectively make the motor work under high efficiency speed, and the pedal rotating shaft and the motor are all coupled with the output shaft.
  • a center-mounted dual-power driving device for a smart bicycle includes a housing 1 , wherein: the housing 1 is provided with a rotating shaft hole 101, and the rotating shaft hole 101 is provided with a pedal rotating shaft 2, the pedal shaft 2 is sleeved with a hollow motor shaft 3 that is rotatable relative thereto, and the motor shaft 3 is fixedly disposed on the hollow motor shaft 3, and the housing 1 is located in the motor An outer side of the rotor 4 is provided with a motor stator 5 fixed to the housing 1.
  • the housing 1 is provided with an output shaft hole 102 concentric with the shaft hole 101, and the output shaft hole 102 is mounted therein.
  • the first overrunning clutch 7 is coupled to the pedal shaft 2, and the second overrunning clutch 8
  • a reduction gear 9 is provided between the motor rotor 4 described above.
  • the first overrunning clutch 7 includes a first inner ring gear 71 disposed in the output hollow shaft 6
  • the first inner ring gear 71 is provided with a first clutch disc 72 therein, and the outer circumference side of the first clutch disc 72 is provided with an axially extending first notch 721 and a first circumference.
  • the first notch 721 is provided with a first pawl 73 rotating therein, and the first circumferential ring groove 722 is provided with the first pawl 73
  • the first elastic expansion ring 74 of the outer tension is provided to the annular groove 722, the first notch 721 is provided with a first pawl 73 rotating therein, and the first circumferential ring groove 722 is provided with the first pawl 73
  • the first elastic expansion ring 74 of the outer tension is provided to the annular groove 722, the first notch 721 is provided with a first pawl 73 rotating therein, and the first circumferential ring groove 722 is provided with the first pawl 73
  • the second overrunning clutch 8 includes a second inner ring gear 81 disposed in the output hollow shaft 6
  • the second inner ring gear 81 is provided with a second clutch disc 82 therein, and the second clutch disc 82 is provided with an axially extending second notch 821 and a second circumferential ring.
  • a slot 822, the second notch 821 is provided with a second pawl 83 rotating therein, and the second circumferential ring groove 822 is provided with the second pawl 83 being pulled outwardly.
  • the second elastic expansion ring 84 is provided in the output hollow shaft 6
  • the second inner ring gear 81 is provided with a second clutch disc 82 therein, and the second clutch disc 82 is provided with an axially extending second notch 821 and a second circumferential ring.
  • a slot 822, the second notch 821 is provided with a second pawl 83 rotating therein, and the second circumferential ring groove 822 is provided with the second pawl
  • the center-mounted dual power driving device for a smart bicycle as described above is characterized in that: the first inner ring gear 71 is aligned with the second inner ring gear 81.
  • the mid-mounted dual-power driving device for a smart bicycle as described above is characterized in that: the first notch 721 includes a first arcuate notch portion 72a and a first oblique notch portion 72b connected thereto.
  • the first pawl 73 includes a first curved portion 73a that matches the rotation in the first curved notch portion 72a and a square claw head 73b connected thereto, and the square claw head 73b is provided thereon.
  • the medium-mounted dual-power driving device for a smart bicycle as described above is characterized in that: the speed reducing device 9 includes an inner ring gear 902 fixedly disposed in the casing 1, the hollow
  • the motor shaft 3 is provided with an eccentric portion 301 housed in the housing 1 , and the eccentric portion 301 is provided with a double stepped planetary gear 904 rotatable about a center thereof, the double-stepped planetary gear 904 includes a first stage upper gear 941 and a second lower gear 942, wherein the first stage gear 941 is meshed with the inner ring gear 902, and the second clutch disc 82 is fixedly coupled to the second stage.
  • the lower gear 942 meshes with the output inner ring gear 10.
  • the mid-mounted dual power driving device for a smart bicycle as described above is characterized in that: the hollow motor shaft 3 is provided with a dynamic balancing block 305 rotatable therearound.
  • pedal rotating shaft and the motor of the utility model are all coupled with the output shaft, and the motor and the foot pedal can simultaneously provide power to the output shaft, and when the motor cannot provide power, the pedal is used to drive the motor, the motor It is separated from the pedal by the second overrunning clutch, eliminating the need to overcome the motor damping and saving effort.
  • the overrunning clutch of the utility model adopts an elastic expansion ring and a pawl to cooperate with the clutch, which is safe and reliable, and is not easy to slip.
  • the utility model has a dynamic balance block on the shaft of the hollow motor, and the balance is good.
  • the utility model adopts a balance block to solve the balance problem, avoids the use of the symmetric double gear to balance, the processing process is simple, and the manufacturing cost is low.
  • 1 is a front view of the utility model
  • Figure 2 is a cross-sectional view of the utility model
  • FIG. 3 is a schematic view showing the separated state of the first overrunning clutch of the present invention.
  • FIG. 4 is a schematic view showing the engagement state of the first overrunning clutch of the present invention.
  • FIG. 5 is a schematic view of the first inner ring gear of the present invention.
  • Figure 6 is a front view of the first clutch disc of the present invention.
  • Figure 7 is a left side view of the first clutch disc of the present invention.
  • Figure 8 is a front view of the first pawl of the present invention.
  • Figure 9 is a cross-sectional view of the first ⁇ -A of the present invention.
  • Figure 10 is a front view of the first elastic expansion ring of the present invention.
  • FIG. 11 is a schematic view showing the separated state of the second overrunning clutch of the present invention.
  • a mid-mounted dual-power driving device for a smart bicycle includes a housing 1 in which a shaft hole 101 is disposed, and the shaft hole 101 is provided with a pedal shaft 2,
  • the pedal shaft 2 is sleeved with a hollow motor shaft 3 that is rotatable relative thereto.
  • the hollow motor shaft 3 is fixedly provided with a motor rotor 4, and the housing 1 is located outside the motor rotor 4
  • There is a motor stator 5 fixed on the casing 1 and the casing 1 is provided with an output shaft hole 102 concentric with the shaft hole 101, and the output shaft hole 10 2 is provided with a sleeve.
  • An overrunning clutch 7 is coupled to the pedal shaft 2, and a reduction gearing 9 is disposed between the second overrunning clutch 8 and the motor rotor 4.
  • the pedal rotation shaft and the motor are both coupled to the output shaft, and the motor and the foot pedal can simultaneously supply power to the output shaft, and when the motor cannot provide power, the pedal and the pedal are driven by the second super motor. For clutch separation, there is no need to overcome motor damping and save effort.
  • the first overrunning clutch 7 includes a first inner ring gear 71 disposed in the output hollow shaft 6, and the first inner ring gear 71 is configured to be rotatable therein.
  • a clutch disc 72 the first circumferential side of the first clutch disc 7.2 is provided with an axially extending first notch 721 and a first circumferential ring groove 722, and the first notch 72 1 is disposed therein
  • the first first pawl 73 is rotated, and the first circumferential ring groove 722 is provided with a first elastic expansion ring 74 for pulling the first pawl 73 outward.
  • the overrunning clutch adopts elastic expansion ring and the pawl to cooperate with the clutch, which is safe and reliable, and is not easy to slip.
  • the second overrunning clutch 8 includes a second inner ring gear 81 disposed in the output hollow shaft 6, and the second inner ring gear 81 is configured to be rotatable therein.
  • the second clutch disc 82 is provided with an axially extending second notch 821 and a second circumferential ring groove 822 on the outer circumferential side of the second clutch disc 82.
  • the second notch 82 1 is provided with a rotation therein.
  • the second pawl 83, the second circumferential ring groove 822 is provided with a second elastic expansion ring 84 for pulling the second pawl 83 outward.
  • the first elastic expansion ring 74 is C-shaped. Easy to install.
  • the first inner ring gear 71 is aligned with the second inner ring gear 81.
  • the first overrunning clutch 7 and the second overrunning clutch 8 are identical in clutch structure and working principle.
  • the first notch 721 includes a first curved notch portion 72a and a first oblique notch portion 72b connected thereto.
  • the first pawl 73 includes a first curved portion 73a that matches the rotation in the first curved notch portion 72a and a square claw head 73b connected thereto, and the square claw head 73b is provided thereon.
  • the reduction gear unit 9 includes an inner ring gear 902 fixedly disposed in the casing 1 , and the hollow motor shaft 3 is provided with an eccentric portion 301 accommodated in the casing 1 .
  • the eccentric portion 301 is provided with a double stepped planetary gear 904 rotatable about a center thereof, and the double-stepped planetary gear 904 includes a first-order high-position gear 941 and a second-order low-position gear 942, and the first-order high position A gear 941 is meshed with the ring gear 902, and an output ring gear 10 meshing with the second lower gear 942 is fixedly coupled to the second clutch disc 82.
  • the hollow motor shaft 3 is provided with a dynamic balance block 305 rotatable therearound. Dynamic balancing block on the hollow motor shaft
  • the balance block is used to solve the balance problem, avoiding the use of symmetric double gears for balancing, the processing process is simple, and the production cost is low.
  • the utility model increases electric power assistance without substantially changing the basic structure, volume, weight, use function and physical exertion of the bicycle, and provides three modes: full human mode, full electric power mode, human electric hybrid Mode for optional mid-mounted dual power drive.
  • the three usage modes of the utility model are: full manual mode; full electric power mode; human electric hybrid mode.
  • the maximum output torque and the rotational speed of the mid-mounted dual power drive can be adjusted by controlling the maximum output power and speed of the brushless DC motor.
  • the motor rotates the power from the hollow motor shaft 3, and the eccentric portion 301 of the hollow motor shaft 3 drives the double stepped planetary gear 904 to rotate and the inner ring gear 902 to perform differential tooth movement, and the double stepped planetary gear 904 revolves with the eccentric portion 301.
  • the cymbal can step on the pedal to drive the pedal shaft 2 to rotate.
  • the pedal shaft 2 rotates at a higher speed than the output hollow shaft 6, the first engagement with the clutch 7 causes the pedal drive to output the hollow shaft to rotate.
  • the rotational speed sensor detects the rotation signal of the pedal 2 and starts the motor.
  • the motor rotates the power from the hollow motor shaft 3, and the eccentric portion 301 of the hollow motor shaft 3 drives the double stepped planetary gear 904 to rotate and the inner ring gear 902 to perform differential tooth movement, and the double stepped planetary gear 904 revolves with the eccentric portion 301.
  • the hollow motor shaft 3 does not rotate, and the output inner ring gear 10 does not rotate. Since the output inner ring gear 10 rotates lower than the output hollow shaft 6, the second overrunning clutch 8 separation, the output hollow shaft 6 remains unrotated. Thereafter, the foot pedal 2 can be rotated by stepping on the pedal, and the pedal shaft 2 is rotated faster than the output hollow shaft 6, the first is engaged with the clutch 7, and the pedal shaft is separately driven to output the hollow shaft to rotate.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

一种用于智能自行车的中置式双动力驱动装置,包括壳体(1),壳体(1)内设有转轴孔(101),转轴孔(101)内装有脚踏转轴(2),脚踏转轴(2)上套设有能相对其转动的空心电机轴(3),空心电机轴(3)上固定设有电机转子(4),壳体(1)内位于电机转子(4)外侧设有固定于壳体上的电机定子(5),壳体(1)上设有与转轴孔(101)同心的输出轴孔(102),输出轴孔(102)内装有套装在脚踏转轴(2)上能相对脚踏转轴(2)转动的输出空心轴(6),输出空心轴(6)内设有第一超越离合器(7)和第二超越离合器(8),第一超越离合器(7)与脚踏转轴(2)连接,第二超越离合器(8)与电机转子(4)之间设有减速装置(9)。

Description

说明书 发明名称:一种用于智能自行车的中置式双动力驱动装置 技术领域
[0001] 本实用新型涉及一种新型智能型助力自行车, 更具体地说是一种自行车的双动 力驱动装置。
背景技术
[0002] 由于现在环境、 交通压力与日俱增, 绿色出行成为出行的一种趋势, 自行车由 于其体积小重量出行方便, 使自行车出行成为一种绿色出行最佳选择之一, 但 在无电动助力的情况下, 长吋间、 长距离的自行车出行对出行人的体力消耗大 。 而现有的电动自行车体积较大, 重量较重。 而且现有的电动自行车在全人力 驱动吋, 由于电机与输出轴之间没有分离, 人力需要同吋克服电机磁力阻尼, 体力消耗大。
技术问题
[0003] 本实用新型克服了现有技术的不足, 提供一种结构简单, 成本低, 体积小, 重 量轻, 能有效使电机在高效率转速下工作, 踏板旋转轴和电机均与输出轴离合 的用于智能自行车的中置式双动力驱动装置。
问题的解决方案
技术解决方案
[0004] 本实用新型是通过以下技术方案实现的:
[0005] 一种用于智能自行车的中置式双动力驱动装置, 包括壳体 1, 其特征在于: 所 述的壳体 1内设有转轴孔 101, 所述的转轴孔 101内装有脚踏转轴 2, 所述的脚踏 转轴 2上套设有能相对其转动的空心电机轴 3, 所述的空心电机轴 3上固定设有电 机转子 4, 所述的壳体 1内位于所述的电机转子 4外侧设有固定于所述的壳体 1上 的电机定子 5, 所述的壳体 1上设有与所述的转轴孔 101同心的输出轴孔 102, 所 述的输出轴孔 102内装有套装在所述的脚踏转轴 2上能相对所述的脚踏转轴 2转动 的输出空心轴 6, 所述的输出空心轴 6内设有第一超越离合器 7和第二超越离合器 8, 所述的第一超越离合器 7与所述的脚踏转轴 2连接, 所述的第二超越离合器 8 与所述的电机转子 4之间设有减速装置 9。
[0006] 如上所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第 一超越离合器 7包括设置在所述的输出空心轴 6内的第一内卡齿圈 71, 所述的第 一内卡齿圈 71内设有能在其内转动第一离合盘 72, 所述的第一离合盘 72外圆周 侧设有轴向延伸的第一缺口 721和第一周向环槽 722, 所述的第一缺口 721内设有 在其内转动的第一棘爪 73, 所述的第一周向环槽 722内设有拨动所述的第一棘爪 73向外张幵的第一弹性胀环 74。
[0007] 如上所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第 二超越离合器 8包括设置在所述的输出空心轴 6内的第二内卡齿圈 81, 所述的第 二内卡齿圈 81内设有能在其内转动第二离合盘 82, 所述的第二离合盘 82外圆周 侧设有轴向延伸的第二缺口 821和第二周向环槽 822, 所述的第二缺口 821内设有 在其内转动的第二棘爪 83, 所述的第二周向环槽 822内设有拨动所述的第二棘爪 83向外张幵的第二弹性胀环 84。
[0008] 如上所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第 一弹性胀环 74为 C字形。
[0009] 如上所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第 一内卡齿圈 71与所述的第二内卡齿圈 81对齐相连。
[0010] 如上所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第 一缺口 721包括第一弧形缺口部 72a和与其相连的第一斜缺口部 72b, 所述的第一 棘爪 73包括在所述的第一弧形缺口部 72a内匹配转动的第一弧形部 73a和与其相连 的方形卡爪头 73b, 所述的方形卡爪头 73b上设有供所述的第一弹性胀环 74卡入 的第一棘爪槽 73c。
[0011] 如上所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的减 速装置 9包括固定设置在所述的壳体 1内的内齿圈 902, 所述的空心电机轴 3上设 有容置在所述的壳体 1内的偏心部 301, 所述的偏心部 301上装有能绕其中心转动 的双联阶梯行星齿轮 904, 所述的双联阶梯行星齿轮 904包括一级高位齿轮 941和 二级低位齿轮 942, 所述的一级高位齿轮 941与所述的内齿圈 902啮合, 所述的第 二离合盘 82上固定连接有与所述的二级低位齿轮 942啮合的输出内齿圈 10。 [0012] 如上所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 空心电机 轴 3上装有可绕其转动的动平衡块 305。
发明的有益效果
有益效果
[0013] 与现有技术相比, 本实用新型有如下优点:
[0014] 1、 本实用新型踏板旋转轴和电机均与输出轴离合, 电机和脚踏板可以同 吋提供动力给输出轴, 且当电机不能提供动力, 用仅用脚踏板驱动吋, 电机与 脚踏板通过第二超越离合器分离, 无需克服电机阻尼, 省力。
[0015] 2、 本实用新型超越离合器采用弹性胀圈与棘爪配合离合, 安全可靠, 不 易打滑。
[0016] 3、 本实用新型在空心电机轴上设有动平衡块, 平衡性好。
[0017] 4、 本实用新型采用平衡块来解决平衡问题, 避免采用对称双联齿轮来平 衡, 加工工艺简单, 制作成本低。
对附图的简要说明
附图说明
[0018] 图 1是本实用新型主视图;
[0019] 图 2是本实用新型剖视图;
[0020] 图 3是本实用新型第一超越离合器分离状态示意图;
[0021] 图 4是本实用新型第一超越离合器接合状态示意图;
[0022] 图 5是本实用新型第一内卡齿圈示意图;
[0023] 图 6是本实用新型第一离合盘主视图;
[0024] 图 7是本实用新型第一离合盘左视图;
[0025] 图 8是本实用新型第一棘爪主视图;
[0026] 图 9是本实用新型第一 $Α- A剖视图;
[0027] 图 10是本实用新型第一弹性胀环主视图;
[0028] 图 11是本实用新型第二超越离合器分离状态示意图;
[0029] 图 12是本实用新型第二离合盘主视图。 实施该发明的最佳实施例
本发明的最佳实施方式
[0030] 一种用于智能自行车的中置式双动力驱动装置, 包括壳体 1, 所述的壳体 1内设 有转轴孔 101, 所述的转轴孔 101内装有脚踏转轴 2, 所述的脚踏转轴 2上套设有 能相对其转动的空心电机轴 3, 所述的空心电机轴 3上固定设有电机转子 4, 所述 的壳体 1内位于所述的电机转子 4外侧设有固定于所述的壳体 1上的电机定子 5, 所述的壳体 1上设有与所述的转轴孔 101同心的输出轴孔 102, 所述的输出轴孔 10 2内装有套装在所述的脚踏转轴 2上能相对所述的脚踏转轴 2转动的输出空心轴 6 , 所述的输出空心轴 6内设有第一超越离合器 7和第二超越离合器 8, 所述的第一 超越离合器 7与所述的脚踏转轴 2连接, 所述的第二超越离合器 8与所述的电机转 子 4之间设有减速装置 9。 踏板旋转轴和电机均与输出轴离合, 电机和脚踏板可 以同吋提供动力给输出轴, 且当电机不能提供动力, 用仅用脚踏板驱动吋, 电 机与脚踏板通过第二超于离合器分离, 无需克服电机阻尼, 省力。
[0031] 所述的第一超越离合器 7包括设置在所述的输出空心轴 6内的第一内卡齿圈 71, 所述的第一内卡齿圈 71内设有能在其内转动第一离合盘 72, 所述的第一离合盘 7 2外圆周侧设有轴向延伸的第一缺口 721和第一周向环槽 722, 所述的第一缺口 72 1内设有在其内转动的第一棘爪 73, 所述的第一周向环槽 722内设有拨动所述的 第一棘爪 73向外张幵的第一弹性胀环 74。 超越离合器采用弹性胀圈与棘爪配合 离合, 安全可靠, 不易打滑。
[0032] 所述的第二超越离合器 8包括设置在所述的输出空心轴 6内的第二内卡齿圈 81, 所述的第二内卡齿圈 81内设有能在其内转动第二离合盘 82, 所述的第二离合盘 8 2外圆周侧设有轴向延伸的第二缺口 821和第二周向环槽 822, 所述的第二缺口 82 1内设有在其内转动的第二棘爪 83, 所述的第二周向环槽 822内设有拨动所述的 第二棘爪 83向外张幵的第二弹性胀环 84。
[0033] 所述的第一弹性胀环 74为 C字形。 方便安装。
[0034] 所述的第一内卡齿圈 71与所述的第二内卡齿圈 81对齐相连。 所述的第一超越离 合器 7与所述的第二超越离合器 8离合结构及工作原理完全相同。
[0035] 所述的第一缺口 721包括第一弧形缺口部 72a和与其相连的第一斜缺口部 72b, 所述的第一棘爪 73包括在所述的第一弧形缺口部 72a内匹配转动的第一弧形部 73a 和与其相连的方形卡爪头 73b, 所述的方形卡爪头 73b上设有供所述的第一弹性 胀环 74卡入的第一棘爪槽 73c。
[0036] 所述的减速装置 9包括固定设置在所述的壳体 1内的内齿圈 902, 所述的空心电 机轴 3上设有容置在所述的壳体 1内的偏心部 301, 所述的偏心部 301上装有能绕 其中心转动的双联阶梯行星齿轮 904, 所述的双联阶梯行星齿轮 904包括一级高 位齿轮 941和二级低位齿轮 942, 所述的一级高位齿轮 941与所述的内齿圈 902啮 合, 所述的第二离合盘 82上固定连接有与所述的二级低位齿轮 942啮合的输出内 齿圈 10。
[0037] 空心电机轴 3上装有可绕其转动的动平衡块 305。 在空心电机轴上设有动平衡块
, 平衡性好。 采用平衡块来解决平衡问题, 避免采用对称双联齿轮来平衡, 加 工工艺简单, 制作成本低。
[0038] 本实用新型在基本不改变自行车的基本结构、 体积、 重量、 使用功能、 体力消 耗的情况下, 增加电动助力, 提供三种模式: 全人力模式、 全电动力模式、 人 电混合动力模式供可选择的中置式双动力驱动装置。
[0039] 本实用新型工作原理:
[0040] 本实用型三种使用模式分别为: 全人力模式; 全电动力模式; 人电混合动力模 式。
[0041] 当骑车人通过模式选择全电动力模式吋, 可通过对无刷直流电机的最大输出功 率和转速控制, 实现中置式双动力驱动装置的最大输出扭矩和转速的调节。 电 机将动力从空心电机轴 3转动输出, 空心电机轴 3的偏心部 301带动双联阶梯行星 齿轮 904转动同吋与内齿圈 902作差齿运动, 双联阶梯行星齿轮 904随偏心部 301 公转的同吋在内齿圈 902的啮合阻力作用下绕偏心部 301的中心自转, 双联阶梯 行星齿轮 904的二级低位齿轮 942就与输出内齿圈作差齿运动带动输出内齿圈 10 转动, 由于输出内齿圈 10转速比输出空心轴 6高, 第二超越离合器接合, 动力从 输出空心轴 6输出。 此吋, 由于脚踏板轴 2不转, 输出空心轴 6转速比脚踏板轴 2 高, 第一超于离合器 7分离, 脚踏板轴 2保持不转状态。
[0042] 当骑车人选择人电混合动力吋, 此吋, 可以踩踏脚踏板带动脚踏板轴 2转动, 当脚踏板轴 2转速比输出空心轴 6高吋, 第一超于离合器 7接合, 脚踏板驱动输出 空心轴转动。 与此同吋, 转速传感器检测到脚踏轴 2旋转信号, 启动电机。 电机 将动力从空心电机轴 3转动输出, 空心电机轴 3的偏心部 301带动双联阶梯行星齿 轮 904转动同吋与内齿圈 902作差齿运动, 双联阶梯行星齿轮 904随偏心部 301公 转的同吋在内齿圈 902的啮合阻力作用下绕偏心部 301的中心自转, 双联阶梯行 星齿轮 904的二级低位齿轮 942就与输出内齿圈作差齿运动带动输出内齿圈 10转 动, 由于输出内齿圈 10转速比输出空心轴 6高, 第二超越离合器接合, 动力从输 出空心轴 6输出, 实现脚踏力和电机动力共同驱动空心轴 6.
[0043] 当脚踏轴 2停止旋转或反转吋, 转速传感器无信号输出, 电机停止转动。
[0044] 当骑车人选择全人力驱动吋, , 空心电机轴 3不转动转动, 输出内齿圈 10也就 不转动, 由于输出内齿圈 10转速比输出空心轴 6低, 第二超越离合器 8分离, 输 出空心轴 6保持不转。 此吋, 可以踩踏脚踏板带动脚踏板轴 2转动, 脚踏板轴 2转 速比输出空心轴 6高, 第一超于离合器 7接合, 脚踏板轴单独驱动输出空心轴转 动。

Claims

权利要求书
[权利要求 1] 一种用于智能自行车的中置式双动力驱动装置, 包括壳体 (1) , 其特征在于: 所述的壳体 (1) 内设有转轴孔 (101) , 所述的转 轴孔 (101) 内装有脚踏转轴 (2) , 所述的脚踏转轴 (2) 上套设 有能相对其转动的空心电机轴 (3) , 所述的空心电机轴 (3) 上 固定设有电机转子 (4) , 所述的壳体 (1) 内位于所述的电机转 子 (4) 外侧设有固定于所述的壳体 (1) 上的电机定子 (5) , 所 述的壳体 (1) 上设有与所述的转轴孔 (101) 同心的输出轴孔 (1 02) , 所述的输出轴孔 (102) 内装有套装在所述的脚踏转轴 (2 ) 上能相对所述的脚踏转轴 (2) 转动的输出空心轴 (6) , 所述 的输出空心轴 (6) 内设有第一超越离合器 (7) 和第二超越离合 器 (8) , 所述的第一超越离合器 (7) 与所述的脚踏转轴 (2) 连 接, 所述的第二超越离合器 (8) 与所述的电机转子 (4) 之间设 有减速装置 (9) 。
[权利要求 2] 根据权利要求 1所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第一超越离合器 (7) 包括设置在所述的输出 空心轴 (6) 内的第一内卡齿圈 (71) , 所述的第一内卡齿圈 (71 ) 内设有能在其内转动第一离合盘 (72) , 所述的第一离合盘 (7 2) 外圆周侧设有轴向延伸的第一缺口 (721) 和第一周向环槽 (7 22) , 所述的第一缺口 (721) 内设有在其内转动的第一棘爪 (73 ) , 所述的第一周向环槽 (722) 内设有拨动所述的第一棘爪 (73 ) 向外张幵的第一弹性胀环 (74) 。
[权利要求 3] 根据权利要求 2所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第二超越离合器 (8) 包括设置在所述的输出 空心轴 (6) 内的第二内卡齿圈 (81) , 所述的第二内卡齿圈 (81 ) 内设有能在其内转动第二离合盘 (82) , 所述的第二离合盘 (8 2) 外圆周侧设有轴向延伸的第二缺口 (821) 和第二周向环槽 (8 22) , 所述的第二缺口 (821) 内设有在其内转动的第二棘爪 (83
) , 所述的第二周向环槽 (822) 内设有拨动所述的第二棘爪 (83 ) 向外张幵的第二弹性胀环 (84) 。
[权利要求 4] 根据权利要求 2所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第一弹性胀环 (74) 为 C字形。
[权利要求 5] 根据权利要求 2所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第一内卡齿圈 (71) 与所述的第二内卡齿圈 (81) 对齐相连。
[权利要求 6] 根据权利要求 2所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的第一缺口 (721) 包括第一弧形缺口部 (72a ) 和与其相连的第一斜缺口部 (72b) , 所述的第一棘爪 (73) 包 括在所述的第一弧形缺口部 (72a) 内匹配转动的第一弧形部 (73 a) 和与其相连的方形卡爪头 (73b) , 所述的方形卡爪头 (73b) 上设有供所述的第一弹性胀环 (74) 卡入的第一棘爪槽 (73c) 。
[权利要求 7] 根据权利要求 3所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 所述的减速装置 (9) 包括固定设置在所述的壳体 ( 1) 内的内齿圈 (902) , 所述的空心电机轴 (3) 上设有容置在所 述的壳体 (1) 内的偏心部 (301) , 所述的偏心部 (301) 上装有 能绕其中心转动的双联阶梯行星齿轮 (904) , 所述的双联阶梯行 星齿轮 (904) 包括一级高位齿轮 (941) 和二级低位齿轮 (942) , 所述的一级高位齿轮 (941) 与所述的内齿圈 (902) 啮合, 所 述的第二离合盘 (82) 上固定连接有与所述的二级低位齿轮 (942 ) 啮合的输出内齿圈 (10) 。
[权利要求 8] 根据权利要求 7所述的用于智能自行车的中置式双动力驱动装置, 其特征在于: 空心电机轴 (3) 上装有可绕其转动的动平衡块 (30
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