WO2019047698A1 - 电动自行车及其拼接套筒和车架 - Google Patents

电动自行车及其拼接套筒和车架 Download PDF

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Publication number
WO2019047698A1
WO2019047698A1 PCT/CN2018/100774 CN2018100774W WO2019047698A1 WO 2019047698 A1 WO2019047698 A1 WO 2019047698A1 CN 2018100774 W CN2018100774 W CN 2018100774W WO 2019047698 A1 WO2019047698 A1 WO 2019047698A1
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WO
WIPO (PCT)
Prior art keywords
electric bicycle
motor
sleeve
tube
splicing sleeve
Prior art date
Application number
PCT/CN2018/100774
Other languages
English (en)
French (fr)
Inventor
董超祺
Original Assignee
广州市展辉电子有限公司
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Filing date
Publication date
Application filed by 广州市展辉电子有限公司 filed Critical 广州市展辉电子有限公司
Publication of WO2019047698A1 publication Critical patent/WO2019047698A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • B62K11/02—Frames
    • B62K11/04—Frames characterised by the engine being between front and rear wheels
    • B62K11/06—Frames characterised by the engine being between front and rear wheels the frame being of single-beam type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/30—Frame parts shaped to receive other cycle parts or accessories
    • B62K19/34—Bottom brackets
    • 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
    • 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/02—Transmissions characterised by use of an endless chain, belt, or the like of unchangeable ratio
    • 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
    • B62M7/00—Motorcycles characterised by position of motor or engine
    • B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels

Definitions

  • the present invention relates to an electric bicycle and its accessories, and more particularly to an electric bicycle equipped with a center motor and a splicing sleeve of the built-in motor and a structural improvement of the bicycle frame.
  • Bicycles with auxiliary electric motors are usually equipped with front wheel motors, rear wheel motors or center motors, which are collectively referred to as "electric bicycles” or “eBicycles” or “eBikes”.
  • front and rear wheel motors they are hub motors and are manufactured to form part of the front and rear wheels of the bicycle, respectively.
  • the center motor which is part of the central axle drive system of the electric bicycle, the electric bicycle is driven by the use of a power source to drive the motor, which is generally mounted in the lower middle portion of the electric bicycle.
  • the most practical way to install a mid-mounted motor on a bicycle is to use the five-way pipe of the bicycle.
  • install it by following the steps below: first insert the gear shaft into the five-way pipe, then use the additional bracket to move the gear shaft and The shaft of the center motor is kept parallel, ensuring the normal operation of the center motor and the gear box. Then use the connecting bridge and the clamp to stabilize the center motor on the seat post or the lower fork to prevent it from swinging back and forth. Finally, use the five links.
  • the nut of the tube secures the gearbox to the five-way tube.
  • the above installation method is not only time-consuming and laborious, but also requires additional spare parts.
  • the center-mounted motor since its installation through the five-way pipe, its total width exceeds the width of the five-way pipe, therefore, The appearance difference between the electric bicycle and the ordinary bicycle is large, and the bicycle has a streamlined beauty.
  • the technical solution adopted by the present invention to solve the above technical problem is to design and manufacture a splicing sleeve of an electric bicycle, which is fixed on a vehicle tube of an electric bicycle, the splicing sleeve includes a sleeve body, and the sleeve body is provided with a body A centrally mounted motor and a receiving cavity through which the central shaft of the bicycle gearbox passes.
  • the accommodating cavity includes a motor accommodating cavity for inserting the center motor and a built-in five-way for the middle shaft of the bicycle gear box to pass through.
  • the accommodating cavity further includes a controller accommodating cavity.
  • the motor receiving cavity is provided with an inner wall that matches or conforms to the contour of the outer wall of the center motor.
  • An electric bicycle frame includes: a plurality of vehicle tubes, a center motor, and a gear box that cooperates with the center motor;
  • the vehicle tube includes: a seat tube, a lower tube, and a lower fork; and further includes a fixed a splicing sleeve on the vehicle tube, the splicing sleeve includes a sleeve body, and the sleeve body is internally provided with a accommodating cavity;
  • the center motor is detachably embedded in the accommodating cavity inside the splicing sleeve
  • the middle shaft of the gearbox passes through the accommodating cavity.
  • the splicing sleeve can be used in one of two ways:
  • the splicing sleeve is welded to the vehicle tube.
  • the splicing sleeve may be welded to at least one of the seat tube, the lower tube, and the lower fork.
  • the lower part of the lower tube or the seat tube is provided with a sleeve receiving cavity, and the splicing sleeve is embedded in the sleeve accommodating cavity.
  • the accommodating cavity includes a motor accommodating cavity and a built-in five-way; the centering motor is embedded in the motor accommodating cavity, and a central axis of the gearbox passes through the built-in five-way.
  • the accommodating cavity may further include a controller accommodating cavity.
  • the central shaft of the gearbox is locked to the vehicle tube through the built-in five-way and a center nut nut disposed outside the built-in five-way.
  • An electric bicycle includes the above-described electric bicycle frame.
  • the electric bicycle and the splicing sleeve and the frame of the invention are installed in a pre-fabricated splicing sleeve having a built-in five-way and a built-in motor accommodating cavity, thereby being centered
  • the motor, the middle shaft of the gearbox and even the controller are integrated in the splicing sleeve, and the splicing sleeve can flexibly adjust the appropriate installation angle and position according to the unique design of different frames and the lower rear fork and seat of the bicycle.
  • the tube or the lower tube is welded, or the splicing sleeve can also be assembled in a pre-selected bicycle tube, which can solve the complicated assembly procedure of the bicycle in a simpler, more efficient and economical manner, and can make the frame and various parts Combine to achieve the best streamlined visuals.
  • FIG. 1 is a schematic structural view of a first embodiment of a splice sleeve according to the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of a splice sleeve according to the present invention.
  • FIG. 3 is a schematic structural view of a third embodiment of a splicing sleeve according to the present invention.
  • FIG. 4 is a schematic structural view of a fourth embodiment of a splice sleeve according to the present invention.
  • Figure 5 (a) to (f) are schematic views of the splicing sleeve installed at different positions and angles of the frame;
  • Figure 6 is an exploded view of the electric bicycle frame of the present invention.
  • Figure 7 is a left side view of the assembled electric bicycle frame of the present invention.
  • Figure 8 is a right side view of the electric bicycle frame of the present invention assembled
  • Fig. 9 is a structural schematic view showing the assembled electric bicycle of the present invention.
  • the splicing sleeve 2 of the electric bicycle of the present invention is fixed to the vehicle tube of the electric bicycle for accommodating the center motor 3, and is passed through the center shaft 41 of the bicycle gear box 4.
  • the splicing sleeve 2 includes a sleeve body 21 having a receiving cavity therein for accommodating a center motor 3 and a center shaft 41 for the bicycle gear box 4.
  • the splicing sleeve 2 can have various embodiments, and the shape, the number, shape and distribution of the internal accommodating cavities are not fixed, and can be designed along with the bicycle frame and the splicing sleeve 2 and the frame.
  • the fixing positions are different, and the accommodating chambers may be connected to each other or may be disconnected.
  • the first embodiment of the splicing sleeve 2 is provided with three accommodating cavities, one of which is a larger motor accommodating cavity 22 for embedding the center motor 3 and a smaller accommodating cavity.
  • a built-in five-way 23 is provided for the central shaft 41 of the gearbox 4 to pass therethrough, and there is also a controller for the controller housing cavity 24 for fitting the bicycle.
  • This is also a preferred embodiment of the present invention in which the installation of the center motor 3, the center shaft 41 and the controller can be integrated.
  • the second embodiment of the splicing sleeve 2 is as shown in FIG. 2 , and the sleeve body 21 is provided with two large and two independent accommodating cavities, and the large motor accommodating cavity 22 is used for embedding the center motor 3 .
  • the shape and size of the inner wall is matched with that of the center motor 3, and the small built-in five-way 23 is used for the middle shaft 41 to pass therethrough.
  • the third embodiment of the splicing sleeve 2 is shown in FIG. 3, and the inside is the same as that of the second embodiment, and there are also two large and one accommodating cavities, except that the two accommodating cavities 22 and 23 are Connected.
  • the fourth embodiment of the splicing sleeve 2 is as shown in FIG. 4, and only one accommodating cavity 25 is disposed in the sleeve body 21.
  • the accommodating cavity 25 is small on one side, and the center motor 3 is detachably embedded in the ferrule 2 On the larger side, the center shaft 41 of the gearbox 4 passes through the smaller side of the accommodating chamber 25.
  • the motor accommodating cavity 22 for inserting the center motor 3 is provided with an inner wall that matches or conforms to the contour of the outer wall of the center motor, and prevents the center motor 3 from rotating in the accommodating cavity.
  • the inner wall of the motor accommodating cavity 22 is provided with a groove or a convex key 26 which can be concave-convex with the outer wall surface of the center motor 3.
  • the electric bicycle frame of the present invention is mainly composed of a plurality of vehicle tubes, a center motor 3, a gear box 4, and a splicing sleeve 2 fixed to the vehicle tube.
  • the center motor 3 and the gear box 4 cooperate with the transmission and are integrated to ensure the smoothness of the power output.
  • the vehicle tube includes: a seat tube 11, a lower tube 12, a rear lower fork 13, Rear upper fork 14, upper tube 15 and head tube 16.
  • the number and location of the tubes can vary depending on the design of the frame.
  • the structure of the splicing sleeve 2 is as described above, and can be fixed to the vehicle tube by one of two ways:
  • the splicing sleeve 2 is welded to the vehicle tube.
  • the splicing sleeve 2 is welded to at least one of the seat tube 11, the lower tube 12, and the lower yoke 13 depending on the installation position.
  • the splicing sleeve 2 can be rotated by the built-in five-way 23 or the position of the shaft 41 inserted into the gear box 4 so that the motor accommodating chamber 22 is adjusted to be free from the frame.
  • the smaller end of the splicing sleeve 2 ie, the built-in five-way 23 or the end through which the shaft 41 of the gear box 4 passes
  • the seat tube 11 and the lower portion of the frame is fitted to the seat tube 11 and the lower portion of the frame.
  • the tube 12 or the lower fork 13 is welded, and the larger end of the splicing sleeve 2 (ie, the end of the built-in motor accommodating chamber 22) is adaptively welded to the lower tube 12 or the seat tube 11 of the frame, as shown in FIG. (a) to (f) respectively show examples of several mounting angles of the splicing sleeve 2.
  • the center motor 3 is detachably embedded in the motor accommodating cavity 22, and the middle shaft 41 of the gear box 4 is passed through the built-in five-way 23 or the accommodating cavity 25 of the splicing sleeve 2, and then used.
  • a center shaft nut 42 disposed outside the built-in five-way 23 or the accommodating chamber 25 is screwed to the middle shaft sleeve 43 having a large diameter in the middle of the center shaft 41, so that the gear box 4 and the center motor can be 3 locked on the vehicle tube.
  • a sleeve receiving cavity 6 is disposed in the lower portion of the lower tube 12 or the seat tube 11, and the splicing sleeve 2 is embedded in the sleeve accommodating cavity 6.
  • the vehicle tube provided with the sleeve receiving cavity 6 may be a flat tube having a plurality of wall surfaces such as four wall surfaces wider than other vehicle tubes.
  • the width of the flat tube matches the width of the splice sleeve 2 such that the splice sleeve 2 can be embedded in the vehicle tube without protruding from the vehicle tube.
  • the battery pack 5 of the electric bicycle is detachably mounted on the wider vehicle tube.
  • the installation mode of the center motor 3 and the gear box 4 is the same as that of the first type.
  • Figure 9 shows an electric bicycle made of the frame of the present invention, through which the central shaft 41 of the gear box 4 passes through the built-in five-way 23 or accommodating chamber 25 of the splicing sleeve 2, and the center motor 3 Embedded in the motor accommodating cavity 22 of the splicing sleeve 2, the center motor 3 is hidden in the splicing sleeve 2, the gear box 4 is exposed on the side of the splicing sleeve 2 and is blocked by the sprocket cover, the gear box
  • the two ends of the middle shaft 41 of the 4 are respectively connected with a left crank 81 and a right crank 82, and the bicycle can be driven by a human power.
  • the sprocket 7 is coupled with the gear box 4 via the central shaft 41.
  • the occluded or unlabeled components in Fig. 9 can be referred to the figure. 6.
  • the present invention installs a center motor in a pre-fabricated splicing sleeve having a built-in five-way and a built-in motor accommodating cavity, thereby locating the center motor, the center axis of the gear box, and even the controller.
  • a center motor in a pre-fabricated splicing sleeve having a built-in five-way and a built-in motor accommodating cavity, thereby locating the center motor, the center axis of the gear box, and even the controller.
  • the splicing sleeve it not only solves the problem that the traditional mid-mounted motor is time-consuming, laborious and uneconomical, but also makes the bicycle look closer to the ordinary bicycle, and has a more streamlined beauty than the traditional electric bicycle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

一种电动自行车及其拼接套筒和车架，其中拼接套筒（2）包括套筒本体（21），该套筒本体（21）内设有可容纳中置电机（3）和供自行车齿轮箱（4）的中轴（41）穿过的内置五通（23），该拼接套筒（2）焊接于车管上或者嵌装于车管上。

Description

电动自行车及其拼接套筒和车架 技术领域
本发明涉及电动自行车及其配件，尤其涉及一种安装有中置电机的电动自行车及其可内置电机的拼接套筒和自行车车架的结构改进。
 背景技术
具有辅助电动电机的自行车通常配备有前轮电机，后轮电机或中置电机，它们统称为“电动自行车”或“eBicycles”或“eBikes”。
对于前轮和后轮电机，它们是轮毂电机，并且被制造成分别形成自行车的前轮和后轮的一部分。对于中置电机，它是电动自行车的中央车轴驱动系统的一部分，通过使用电源驱动电机旋转，从而为电动自行车提供驱动力，它一般被安装在电动自行车的中间下部的位置。
目前，将中置电机安装到自行车上的最实用的方法是利用自行车的五通管，通常要按照以下步骤安装：先将齿轮中轴插入五通管中，然后使用附加支架将齿轮中轴和中置电机的轴保持平行的状态，确保中置电机与齿轮箱的正常运作，再使用连接桥和夹子将中置电机稳定在座管柱或后下叉上，防止其前后摆动，最后使用五通管的螺母把齿轮箱与五通管紧固在一起。
 技术问题
上述安装方式不仅费时费力，还需要附加额外的零配件，此外，由于中置电机具有一定的体积和宽度，其通过五通管安装后，它的总宽度会超过五通管的宽度，因此，电动自行车和普通自行车之间的外观差异较大，失去了自行车具有的流线型美感。
为了追求电动自行车的流线型外观，电动自行车制造商会利用拼接套筒或拼接片，通过相对昂贵的热锻法，把中置电机和下管和座管焊接起来。再者，由于中置电机和自行车车管的设计并不同步，附加零部件（例如拼接套筒/拼接片）和热锻焊接工序便成为组装成车过程不可或缺的部分。同样地，上述设计也涉及很多资源，如额外的零部件、时间和劳动力，使得电动自行车成本较高，此外，通过热锻焊接的方式把中置电机和下管、座管连接起来，仍然不能完全满足电动自行车流线型美的要求。
 技术解决方案
本发明解决上述技术问题采用的技术方案是，设计制造一种电动自行车的拼接套筒，固定于电动自行车的车管上，所述拼接套筒包括套筒本体，该套筒本体内设有可容纳中置电机和供自行车齿轮箱的中轴穿过的容置腔。
所述容置腔包括一个用于嵌装中置电机的电机容置腔和一个供自行车齿轮箱的中轴穿过的内置五通。
所述容置腔还包括控制器容置腔。
所述电机容置腔设有与所述中置电机外壁轮廓匹配或者凹凸配合的内壁。
一种电动自行车车架，包括：多根车管、中置电机以及与该中置电机配合传动的齿轮箱；所述车管包括：座管、下管和后下叉；此外还包括固定于所述车管上的拼接套筒，该拼接套筒包括套筒本体，该套筒本体内部设有容置腔；所述中置电机可拆卸地嵌装于该拼接套筒内部的容置腔中，所述齿轮箱的中轴从该容置腔中穿过。
拼接套筒可采用以下两种安装方式之一：
一、所述拼接套筒焊接于所述车管上。该拼接套筒可与所述座管、下管、后下叉中的至少一根车管焊接在一起。
二、所述下管或座管的下部设有一个套筒容置腔，所述拼接套筒嵌装于该套筒容置腔内。
所述容置腔包括一个电机容置腔和一个内置五通；所述中置电机嵌装于所述电机容置腔内，所述齿轮箱的中轴从所述内置五通中穿过。
所述容置腔还可以包括一个控制器容置腔。
所述齿轮箱的中轴穿过所述内置五通与设在该内置五通外侧的一个中轴螺母旋配将该齿轮箱锁定于车管上。
一种电动自行车，包括上述的电动自行车车架。
 有益效果
同现有技术相比较，本发明电动自行车及其拼接套筒和车架通过把中置电机安装在预先制造的、具有内置五通和内置电机容置腔的拼接套筒内，从而将中置电机、齿轮箱的中轴甚至控制器集成于该拼接套筒内，所述拼接套筒可按不同车架的独特设计、灵活地调整合适的安装角度和位置并跟自行车的下后叉、座管或下管焊接，或者也可把所述拼接套筒装配于预先选制的自行车车管内，可以更简单、高效和经济的方式解决自行车繁复的装配程序，而且可以使车架和各部分的组合达到最佳流线型的视觉效果。
 附图说明
图1为本发明拼接套筒实施例一的结构示意图；
图2为本发明拼接套筒实施例二的结构示意图；
图3为本发明拼接套筒实施例三的结构示意图；
图4为本发明拼接套筒实施例四的结构示意图；
图5中（a）至（f）为所述拼接套筒安装在车架不同位置和角度的示意图；
图6为本发明电动自行车车架的分解图；
图7为本发明电动自行车车架组装好后的左侧视图；
图8为本发明电动自行车车架组装好后的右侧视图；
图9为本发明的电动自行车组装好后的结构示意图。
 本发明的实施方式
下面结合附图所示之实施例对本发明作进一步详述。
如图5或图6所示，本发明电动自行车的拼接套筒2固定于电动自行车的车管上，用于容纳中置电机3，并可供自行车齿轮箱4的中轴41从中穿过。所述拼接套筒2包括套筒本体21，该套筒本体21内设有可容纳中置电机3和供自行车齿轮箱4的中轴41穿过的容置腔。
所述拼接套筒2可以有多种实施方式，其外形、内部容置腔的数量、形状和分布并非固定不变的，可以随着自行车车架的设计以及该拼接套筒2与车架的固接位置不同而改变，容置腔之间可以是相互连通的，也可以是不连通的。
以下是拼接套筒2的几种实施方式的举例：
拼接套筒2的实施例一如图1所示，其内部设有三个容置腔，其中一个较大的为电机容置腔22用于嵌装中置电机3，一个较小的容置腔为内置五通23用于供齿轮箱4的中轴41从中穿过，还有一个为控制器容置腔24可用于嵌装自行车的控制器。这也是本发明优选的实施方式，可将中置电机3、中轴41和控制器的安装集成于一体。
拼接套筒2的实施例二如图2所示，其套筒本体21内设有一大一小两个独立的容置腔，大的为电机容置腔22用于嵌装中置电机3，其内壁的形状和尺寸与中置电机3的匹配，小的为内置五通23用于供中轴41从中穿过。
拼接套筒2的实施例三如图3所示，其内部与实施例二一样，也设有一大一小两个容置腔，所不同的是，这两个容置腔22和23是相连通的。
拼接套筒2的实施例四如图4所示，其套筒本体21内只设有一个容置腔25，该容置腔25一边大一边小，中置电机3可拆卸地嵌装于较大的一边，齿轮箱4的中轴41则从容置腔25较小的一边穿过。
另外，用于嵌装中置电机3的电机容置腔22设有与所述中置电机外壁轮廓匹配或者凹凸配合的内壁，可防止中置电机3在容置腔内转动，本实施例中，电机容置腔22的内壁上设有可与所述中置电机3外壁面凹凸配合的凹槽或凸键26。
如图6、图7和图8所示，本发明的电动自行车车架主要由多根车管、中置电机3、齿轮箱4以及固定于所述车管上的拼接套筒2组成。其中，所述中置电机3和齿轮箱4配合传动并集成为一体以保证动力输出的平稳，在本实施例中，所述车管包括：座管11、下管12、后下叉13、后上叉14、上管15和头管16。当然车管的数量和位置根据车架的设计可以有所不同。
所述拼接套筒2的结构如上所述，可以通过以下两种方式之一固定于车管上：
一、如图5所示，将拼接套筒2焊接于所述车管上。根据安装位置的不同，该拼接套筒2与所述座管11、下管12、后下叉13中的至少一根车管焊接在一起。
上述固定方式中，所述拼接套筒2可以其内置五通23或者穿插齿轮箱4中轴41的位置为轴心在360度的范围内转动使得其电机容置腔22调整至不受车架干扰的合适位置后再固定，把所述拼接套筒2较小的一端（即内置五通23或供齿轮箱4中轴41穿过的一端）适配地与车架的座管11、下管12或后下叉13焊接，并把拼接套筒2较大的一端（即内置电机容置腔22的一端）适配地与车架的下管12或座管11焊接，图5中的（a）至（f）分别显示了拼接套筒2的其中几种安装角度的示例。然后将中置电机3可拆卸地嵌装在所述电机容置腔22内，使齿轮箱4的中轴41穿过所述拼接套筒2的内置五通23或容置腔25后，用一个设在该内置五通23或容置腔25外侧的一个中轴螺母42旋配于该中轴41中部直径较大的中轴套筒43处，从而可将该齿轮箱4及中置电机3锁定于车管上。
二、如图6所示，在所述下管12或座管11的下部设有一个套筒容置腔6，所述拼接套筒2嵌装于该套筒容置腔6内。
在这种固定方式中，为使车架的外形更加整齐美观，设置有套筒容置腔6的车管可以是比其它车管更宽的、具有多个壁面如四个壁面的扁平管，该扁平管的宽度与拼接套筒2的宽度匹配，使得该拼接套筒2可嵌装于车管内而不会凸出车管。电动自行车的电池组5可拆卸地安装于该较宽的车管上。
所述中置电机3与齿轮箱4的安装方式则与第一种固定方式相同。
图9示出了一种采用本发明的车架制成的电动自行车，将齿轮箱4的中轴41穿过所述拼接套筒2的内置五通23或容置腔25，中置电机3嵌装于拼接套筒2的电机容置腔22内，该中置电机3被隐藏在拼接套筒2内，齿轮箱4外露于拼接套筒2一侧并被链轮盖所遮挡，齿轮箱4的中轴41两端分别连接左曲柄81和右曲柄82，可采用人力驱动自行车，链轮7经中轴41与齿轮箱4配合传动，图9中被遮挡或未标注的部件可参照图6。
与现有技术相比，本发明通过把中置电机安装在预先制造的、具有内置五通和内置电机容置腔的拼接套筒内，从而将中置电机、齿轮箱的中轴甚至控制器集成于该拼接套筒内，既解决了传统中置电机安装费时、费力且不经济的缺陷，还使得自行车的外观更接近普通自行车，与传统电动自行车相比更具流线型的美感。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (12)

  1. 一种电动自行车的拼接套筒，固定于电动自行车的车管上，其特征在于：所述拼接套筒包括套筒本体（21），该套筒本体（21）内设有可容纳中置电机（3）和供自行车齿轮箱（4）的中轴（41）穿过的容置腔。
  2. 根据权利要求1所述的电动自行车的拼接套筒，其特征在于，所述容置腔包括一个用于嵌装中置电机（3）的电机容置腔（22）和一个供自行车齿轮箱（4）的中轴（41）穿过的内置五通（23）。
  3. 根据权利要求2所述的电动自行车的拼接套筒，其特征在于：所述容置腔还包括控制器容置腔（24）。
  4. 根据权利要求2或3所述的电动自行车的拼接套筒，其特征在于：所述电机容置腔（22）设有与所述中置电机（3）外壁轮廓匹配或者凹凸配合的内壁。
  5. 一种电动自行车车架，包括：多根车管、中置电机（3）以及与该中置电机（3）配合传动的齿轮箱（4）；所述车管包括：座管（11）、下管（12）和后下叉（13）；其特征在于：还包括固定于所述车管上的拼接套筒（2），该拼接套筒（2）包括套筒本体（21），该套筒本体（21）内部设有容置腔；所述中置电机（3）可拆卸地嵌装于该拼接套筒（2）内部的容置腔中，所述齿轮箱（4）的中轴（41）从该容置腔中穿过。
  6. 根据权利要求5所述的电动自行车车架，其特征在于：所述拼接套筒（2）焊接于所述车管上。
  7. 根据权利要求6所述的电动自行车车架，其特征在于：所述拼接套筒（2）与所述座管（11）、下管（12）、后下叉（13）中的至少一根车管焊接在一起。
  8. 根据权利要求5所述的电动自行车车架，其特征在于，所述下管（12）或座管（11）的下部设有一个套筒容置腔（6），所述拼接套筒（2）嵌装于该套筒容置腔（6）内。
  9. 根据权利要求5至8任一项所述的电动自行车车架，其特征在于：所述容置腔包括一个电机容置腔（22）和一个内置五通（23）；所述中置电机（3）嵌装于所述电机容置腔（22）内，所述齿轮箱（4）的中轴（41）从所述内置五通（23）中穿过。
  10. 根据权利要求9所述的电动自行车车架，其特征在于：所述容置腔还包括一个控制器容置腔（24）。
  11. 根据权利要求9所述的电动自行车车架，其特征在于：所述齿轮箱（4）的中轴（41）穿过所述内置五通（23）与设在该内置五通（23）外侧的一个中轴螺母（42）旋配将该齿轮箱（4）锁定于车管上。
  12. 一种电动自行车，其特征在于包括权利要求5至11任一项所述的电动自行车车架。
PCT/CN2018/100774 2017-09-07 2018-08-16 电动自行车及其拼接套筒和车架 WO2019047698A1 (zh)

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