WO2012009856A1 - 电动自行车用中置助力装置 - Google Patents

电动自行车用中置助力装置 Download PDF

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Publication number
WO2012009856A1
WO2012009856A1 PCT/CN2010/075393 CN2010075393W WO2012009856A1 WO 2012009856 A1 WO2012009856 A1 WO 2012009856A1 CN 2010075393 W CN2010075393 W CN 2010075393W WO 2012009856 A1 WO2012009856 A1 WO 2012009856A1
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motor
electric
bicycle
output shaft
gears
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PCT/CN2010/075393
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English (en)
French (fr)
Inventor
张惠沅
肖津津
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中国航空技术广州有限公司
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Priority to PCT/CN2010/075393 priority Critical patent/WO2012009856A1/zh
Publication of WO2012009856A1 publication Critical patent/WO2012009856A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts

Definitions

  • the invention relates to a central booster for an electric bicycle
  • it is a mid-assisted system that can be used to assist electric bicycles and electric tricycles. It belongs to the field of human riding electric vehicles.
  • the mid-mounted motor has many advantages due to its installation in the middle of the frame, which is roughly as follows: 1) The drive structure is reasonable and compact. The center motor is installed in the middle of the frame. It is connected with the rear wheel by chain. It has beautiful appearance, simple and light weight, low center of gravity, comfortable and safe riding. (2) Manpower. The motor force is linked by a chain and the rear wheel. The shifting system of the bicycle machine can be used to realize shifting and torque change. The low power can also make high torque, climb the slope, and the climbing ability is super strong; (3) There is no influence of the magnetic resistance of the motor when riding without electricity. As with ordinary bicycles, the sliding distance is long.
  • the mid-mounted motor system has effectively solved the defects of the hub motor in function, the mid-mounted motor system still has the following disadvantages: it destroys the original structure of the bicycle, the production process is complicated, and the frame mold or tooling needs to be specially manufactured. The production cycle is long and the production cost is high.
  • the object of the present invention is to solve the problem that the above-mentioned mid-mounted motor system damages the original structure of the bicycle and the complicated production process, and provides an electric bicycle capable of realizing the combined power of the human electric power and realizing small power, high torque and climbing the slope. Center booster.
  • the central power assisting device comprises a frame, a middle shaft and a toothed disc, wherein the toothed disc is fixed on the bicycle middle shaft, and further characterized by: further comprising an external electric power assisting unit, wherein the electric power assisting unit is composed of a motor and a speed reducer, Electric power assist unit is installed through easy-to-install connection structure
  • the motor and the reduction box are located under the bicycle five-way, the power output shaft of the motor is connected to the input end of the reduction box, and the output end of the reduction box is connected to the toothed plate through a gear transmission mechanism or a sprocket chain transmission mechanism.
  • the reduction gear box may be composed of a tank cover, a box body, an output shaft and a reduction gear set, the reduction gear set is fixed on the output shaft, and the high speed end of the reduction gear set is connected with the motor power output shaft, and the low speed end thereof
  • the gear body is connected to the toothed disc by a gear transmission mechanism or a sprocket chain transmission mechanism, and the box body forms a detachable connection structure through the bracket and the bicycle middle shaft, and the motor is mounted on the box body.
  • the reduction gear set may be composed of one of a gear and two gears, one of the gears Fixedly connected to the output shaft, the output shaft is connected to the cover by one of the bearings and to the case through the second of the bearing, and the second of the gears is connected to the cover by the third of the bearing and the fourth through the bearing Connected to the cabinet.
  • One embodiment of the invention is that the chainrings can have two or more.
  • One embodiment of the invention is: One of the sprockets can be provided on the chainring.
  • the outer connecting structure is formed by the chain.
  • a gear set can be provided on the motor that meshes with one of the gears and one of the gears.
  • One embodiment of the invention is that: two of the sprocket wheels can be attached to the output shaft.
  • the present invention has the following outstanding benefits:
  • the present invention provides an external electric power assisting unit on the frame of the bicycle, and the electric power assisting unit is installed through an easy-to-install and detachable connection structure. On the frame, therefore, there is no need to change the bicycle structure, that is, it will not damage the original structure of the bicycle, and there is no need for another special frame (no special mold is required for production)
  • the utility model has the advantages of simple production process, short production cycle, low production cost, convenient disassembly and convenient use.
  • the invention is fixed on the bicycle five-way through the bracket, so that the motor and the reduction gear box are located under the five-way.
  • the output end has a sprocket, which is connected with the bicycle chainring through a chain. That is, the motor force is first decelerated and decelerated, and then the force is transmitted to the bicycle toothed disc through the chain; the bicycle toothed disc is fixed on the middle shaft, and the toothed disc is connected to the rear wheel through the chain to drive the bicycle, so that the human electric force is driven. It can achieve low power and high torque and climb the slope.
  • Figure 1 is a schematic view of the connection of the present invention to a bicycle.
  • Figure 1 constitutes a specific embodiment 1 of the present invention.
  • the embodiment includes a frame 17, a center shaft 9, a toothed disc 1 and an external electric power assisting unit, and a toothed disc 1 It is fixed on the bicycle center shaft 9.
  • the electric power assisting unit is composed of a motor 2 and a speed reducer.
  • the electric power assisting unit is mounted on the frame 17 through a detachable connection structure, the motor 1
  • the speed reducer is located below the bicycle five-way, and the power output shaft of the motor 1 is connected to the input end of the reduction gear box, and the output end of the reduction gear box is connected to the toothed disc 1 through a gear transmission mechanism or a sprocket chain transmission mechanism.
  • the gearbox can be covered by the cover 3
  • the casing 4, the output shaft 6 and the reduction gear set are formed, the reduction gear set is fixed on the output shaft 6, and the high speed end of the reduction gear set is connected with the motor 2 power output shaft, and the low speed end thereof
  • the gear body is connected to the toothed disc 1 by a gear transmission mechanism or a sprocket chain transmission mechanism, and the casing 4 is formed by a bracket 8 and a bicycle center shaft 9 to form a detachable connection structure, and the motor 2 is mounted on the casing 4 On.
  • the reduction gear set can be composed of one of the gears 5 and two of the gears 7, one of the gears 5 is fixedly connected to the output shaft 6, and the output shaft 6 is passed through one of the bearings 10 and the cover 3
  • the connecting and passing bearings 11 are connected to the casing 4, and the two of the gears 7 are connected to the tank cover 3 through the bearings 3, 12 and to the tank 4 through the bearings 4 and 13 .
  • One of the sprockets 14 can be provided on the chainring 1.
  • Through the chain 15 Form an external connection structure.
  • a gear set that meshes with the gears 2 and 5 of the gears 5 can be provided on the motor 2.
  • a sprocket 2 can be attached to the output shaft 5 .
  • the box 3 is fixed to the bracket 12, the bracket 12 is fixed to the five-way of the frame 17 of the bicycle through the center shaft 13, and the bicycle chainring is fixed on the center shaft 13, and the bicycle chainring passes through the chain 15 again. Connected to the rear wheel of the bicycle.
  • the principle of electric drive of the present invention sequentially by motor 2 ⁇ gear on motor 2 ⁇ gear 2 ⁇ one of gears 5 ⁇ output shaft 6 ⁇ sprocket two 16 ⁇ chain 15 ⁇ one of the sprocket 14 ⁇ the toothed disc 1 , and finally the wheel of the bicycle is rotated by the toothed disc 1 .
  • the human power transmission principle of the present invention through the bicycle crank ⁇ the middle shaft 13 ⁇ the toothed disc 1 , and finally the wheel 1 drives the wheel to rotate.

Description

电动自行车用 中置助力装置 技术领域
本发明涉及一种电动自行车用 中置助力装置 ，特别是一种可用于辅助电动自行车及电动三轮车的中置助力系统。属于人力骑行电动车领域。
背景技术
目前，电动自行车以其节能、环保、实用等已越来越受到人们的欢迎，逐渐成为重要的交通工具之一。而现有电动车的控制系统约99%采用轮毂电机，仅有约1%采用中置电机系统。 占有市场的 99% 轮毂电机电动车，这样的电动车在无电骑行时，因受电机磁阻，骑行远比自行车费力，无电骑行功能不强；且轮毂电机在设计时只适合某种情况下骑行效率才高，爬坡能力不强，如需爬坡能力强需做很大功率的功率才能满足，这要一来在平路或轻载时就又处于低效率区，且大功率电机需采用大容量电池，电池不仅笨重成本也很高，故在此情况下很难更好满足于市场的需求。
因此， 有很多厂商开始使用一些中置电机电动车，中置电机因电机安装于车架中间位置，具有很多优点，大致如下：（ 1 ）驱动结构合理紧凑，中置电机安装在车架中部，用链条与后轮连接，外形美观，简洁、轻巧，重心低，骑行舒适、安全；（ 2 ）人力、 . 电机力都是通过一根链条与后轮链接，可利用自行车机械的变速系统实现变速、变扭矩，小功率也能大扭矩、爬大坡，爬坡能力超强；（ 3 ）无电骑行时没有任何电机磁阻力的影响，同普通自行车一样，滑行距离长。虽然中置电机系统的出现的确在功能上有效地解决了轮毂电机的缺陷，但中置电机系统仍存在以下缺点：破坏了自行车的原有结构，生产工艺复杂，车架模具或工装需特别制造，生产周期长，生产费用高。
发明内容
本发明的目的，是为了解决上述中置电机系统破坏自行车的原有结构、生产工艺复杂的问题，提供一种可以实现人电合力驱动，可以实现小功率大扭矩、爬大坡的 电动自行车用 中置助力装置 。
本发明的目的可以通过以下技术方案实现：
电动自行车用 中置助力装置，包括车架、中轴和齿盘，齿盘固定在自行车中轴上，其特征在于：还包括外置式电动助力单元，所述电动助力单元由电机和减速箱构成，所述电动助力单元通过易装拆式连接结构安装 于车架上，电机和减速箱位于自行车五通下方，电机的动力输出轴连接减速箱的输入端，减速箱的输出端通过齿轮传动机构或链轮链条传动机构与齿盘连接。
本发明的目的还可以通过以下技术方案达到：
本发明的一种实施方案是： 所述减速箱可以由箱盖、箱体、输出轴和减速齿轮组组成，减速齿轮组固定在输出轴上，减速齿轮组的高速端与电机动力输出轴连接、其低速端 通过齿轮传动机构或链轮链条传动机构与齿盘连接， 所述箱体通过支架和自行车中轴形成易拆装式连接结构，所述电机安装在箱体上。
本发明的一种实施方案是： 减速齿轮组可以由齿轮 之一 和齿轮 之二 组成，所述齿轮 之一 与输出轴固定连接，所述输出轴通过轴承 之一 与箱盖连接及通过轴承 之二 与箱体连接，所述齿轮 之二 通过轴承之三与箱盖连接及通过轴承 之四 与和箱体连接。
本发明的一种实施方案是： 所述齿盘可以有两个或两个以上。
本发明的一种实施方案是： 在所述齿盘上可以设有链轮之一。通过链条形成对外连接结构。
本发明的一种实施方案是： 在所述电机上可以设有与齿轮 之二 、齿轮 之一 相啮合的齿轮组。
本发明的一种实施方案是： 在所述输出轴上可以固定有链轮之二。
本发明具有如下突出的有益效果：
1 、本发明由于是在自行车的车架要上设置 外置式电动助力单元，所述电动助力单元通过易装拆式连接结构安装 于车架上，因此，无需改动自行车结构，即不会破坏自行车原有结构，无需另外特置车架 ( 生产无需专用模具 ) ，具有生产工艺简单、生产周期短、生产费用低，拆装置及使用方便的有益效果。
2 、本发明通过支架固定于自行车五通处，使其电机和减速箱位于五通下方，电机经过减速箱减速后，其输出末端有一链轮，通过链条与自行车齿盘一链轮连接 , 即电机力先经过减速减速后再通过链条将力传递到自行车齿盘上；自行车齿盘固定于中轴上，齿盘再通过链条与后轮连接，达到驱动自行车，这样实现人电合力驱动 , 可以实现小功率大扭矩、爬大坡。
附图说明
图 1 为本发明与自行车的连接示意图。
其中， 1 －齿盘， 2 －电机， 3 －箱盖， 4 －箱体， 5 － 齿轮 之一， 6 －输出轴， 7 －齿轮之二， 8 －支架， 9 －中轴， 10 －轴承之一， 11 －轴承之二， 12 －轴承之三， 13 －轴承之四 ， 14 －链轮之一， 15 －链条， 16 －链轮之二， 17 －车架。
具体实施方式
具体实施例 1 ：
图 1 构成本发明的具体实施例 1 。
参照图 1 ，本实施例 包括车架 17 、中轴 9 、齿盘 1 和外置式电动助力单元，齿盘 1 固定在自行车中轴 9 上，所述电动助力单元由电机 2 和减速箱构成，电动助力单元通过易装拆式连接结构安装 于车架 17 上，电机 1 和减速箱位于自行车五通下方，电机 1 的动力输出轴连接减速箱的输入端，减速箱的输出端通过齿轮传动机构或链轮链条传动机构与齿盘 1 连接。 减速箱可以由箱盖 3 、箱体 4 、输出轴 6 和减速齿轮组组成，减速齿轮组固定在输出轴 6 上，减速齿轮组的高速端与电机 2 动力输出轴连接、其低速端 通过齿轮传动机构或链轮链条传动机构与齿盘 1 连接， 箱体 4 通过支架 8 和自行车中轴 9 形成易拆装式连接结构，电机 2 安装在箱体 4 上。减速齿轮组可以由齿轮 之一 5 和齿轮 之二 7 组成，齿轮 之一 5 与输出轴 6 固定连接，输出轴 6 通过轴承 之一 10 与箱盖 3 连接及通过轴承 之二 11 与箱体 4 连接，所述齿轮 之二 7 通过轴承之三 12 与箱盖 3 连接及通过轴承 之四 13 与和箱体 4 连接。
本实施例中，齿盘 1 可以有两个。在齿盘 1 上可以设有链轮之一 14 。通过链条 15 形成对外连接结构。在电机 2 上可以设有与齿轮 之二 7 、齿轮 之一 5 相啮合的齿轮组。在输出轴 5 上可以固定有链轮之二 16 。箱体 3 固定在支架 12 上，支架 12 通过中轴 13 固定于自行车的车架 17 的五通处，自行车齿盘固定于中轴 13 上，该自行车齿盘再通过链条 15 与自行车后轮连接。
实际应用中，
本发明的电力传动原理：依次由电机 2 →电机 2 上的齿轮→齿轮之二 10 →齿轮之一 5 →输出轴 6 →链轮之二 16 →链条 15 →链轮之一 14 →齿盘 1 ，最后由齿盘 1 带动自行车的车轮转动。
本发明的人力传动原理：通过自行车曲柄→中轴 13 →齿盘 1 ，最后由齿盘 1 带动车轮转动。
其他具体实施例：
本发明的其他具体实施例的主要特点是： 齿盘 1 有 3 个、 4 个甚至 4 个以上，其余同具体实施例 1 。

Claims (7)

1 、 电动自行车用 中置助力装置，包括车架（ 17 ）、中轴（ 9 ）和齿盘（ 1 ），齿盘（ 1 ）固定在自行车中轴（ 9 ）上，其特征在于：还包括外置式电动助力单元，所述电动助力单元由电机（ 2 ）和减速箱构成，所述电动助力单元通过易装拆式连接结构安装 于车架（ 17 ）上，电机（ 1 ）和减速箱位于自行车五通下方，电机（ 1 ）的动力输出轴连接减速箱的输入端，减速箱的输出端通过齿轮传动机构或链轮链条传动机构与齿盘（ 1 ）连接。
2 、根据权利要求 1 所述的 电动自行车用 中置助力装置，其特征在于：所述减速箱由箱盖（ 3 ）、箱体（ 4 ）、输出轴（ 6 ）和减速齿轮组组成，减速齿轮组固定在输出轴（ 6 ）上，减速齿轮组的高速端与电机（ 2 ）动力输出轴连接、其低速端 通过齿轮传动机构或链轮链条传动机构与齿盘（ 1 ）连接， 所述箱体（ 4 ）通过支架（ 8 ）和自行车中轴（ 9 ）形成易拆装式连接结构，所述电机（ 2 ）安装在箱体（ 4 ）上。
3 、根据权利要求 2 所述的 电动自行车用 中置助力装置，其特征在于：减速齿轮组由齿轮 之一 （ 5 ）和齿轮 之二 （ 7 ）组成，所述齿轮 之一 （ 5 ）与输出轴（ 6 ）固定连接，所述输出轴（ 6 ）通过轴承 之一 （ 10 ）与箱盖（ 3 ）连接及通过轴承 之二 （ 11 ）与箱体（ 4 ）连接，所述齿轮 之二 （ 7 ）通过轴承之三（ 12 ）与箱盖（ 3 ）连接及通过轴承 之四 （ 13 ）与和箱体（ 4 ）连接。
4 、根据权利要求 1 或 2 所述的 电动自行车用 中置助力装置，其特征在于：所述齿盘（ 1 ）有两个或两个以上。
5 、根据权利要求 1 或 2 所述的 电动自行车用 中置助力装置，其特征在于：在所述齿盘（ 1 ）上设有链轮之一（ 14 ）。
6 、根据权利要求 2 所述的 电动自行车用 中置助力装置，其特征在于：在所述电机（ 2 ）上设有与齿轮 之二 （ 7 ）、齿轮 之一 （ 5 ）相啮合的齿轮组。
7 、根据权利要求 1 或 2 所述的 电动自行车用 中置助力装置，其特征在于：在所述输出轴（ 5 ）上固定有链轮之二（ 16 ）。
PCT/CN2010/075393 2010-07-22 2010-07-22 电动自行车用中置助力装置 WO2012009856A1 (zh)

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