Electric power-assisted driving device and bicycle

Abstract

The utility model provides an electric power-assisted driving device and a bicycle, the electric power-assisted driving device comprises a driving wheel and a support assembly used for fixing the driving wheel, the support assembly comprises an L-shaped clamping plate, the L-shaped clamping plate comprises a fixing part and a mounting part vertically arranged on one side of the fixing part, and the driving wheel is arranged on one side, close to the fixing part, of the mounting part. The driving wheel comprises a shaft wire outlet motor and a friction wheel arranged on the outer side of the shaft wire outlet motor, the shaft wire outlet motor comprises a shaft wire outlet motor body and a motor output shaft, the motor output shaft is fixed to the installation part, and the friction wheel is fixed to the shaft wire outlet motor body. The driving wheel is fixed by arranging the L-shaped clamping plate, so that the electric power-assisted driving device is convenient to disassemble and assemble, the frame structure of the bicycle does not need to be changed, the driving wheel adopts a shaft outgoing line motor, the output shaft of the motor is fixed on the bracket, and the friction wheel is arranged on the motor body to drive the walking wheel to rotate, so that the driving process is simplified, and the driving efficiency is improved. The whole structure is simple, installation is convenient, and daily maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to an electric power-assisted driving device and a bicycle. Background Art

[0002] With the development of lithium battery and motor technology, electric vehicles and electric power-assisted bicycles have entered a period of widespread popularity. Electric power-assisted bicycles have become an important tool for people to use for commuting.

[0003] Among the existing technologies, the electric power-assisted drive structure is relatively complicated, and most of them require changing the bicycle body structure or replacing the front and rear wheels of the bicycle. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an electric power-assisted drive device and a bicycle, aiming to solve the technical problem of the complicated electric power-assisted drive structure in the existing technology.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: an electric power-assisted drive device for driving the walking wheel of a bicycle, the electric power-assisted drive device comprising a driving wheel and a bracket assembly for fixing the driving wheel, the bracket assembly comprising an L-shaped card plate, the L-shaped card plate comprising a fixing portion and a mounting portion vertically arranged on one side of the fixing portion, the driving wheel is provided on the side of the mounting portion close to the fixing portion, the driving wheel comprises an axial-line motor and a friction wheel arranged on the outside of the axial-line motor, the axial-line motor comprises an axial-line motor body, and a motor output shaft rotatably arranged on one side of the axial-line motor body, the motor output shaft is fixed on the mounting portion, the friction wheel is fixed on the axial-line motor body, the bracket assembly also comprises a fixing plate arranged on one side of the fixing portion, and the fixing plate and the fixing portion are detachably connected by bolts.

[0006] Compared with the prior art, the beneficial effects of the present invention are: by providing an L-shaped card plate and a fixing plate on the L-shaped card plate, the driving wheel is fixed, so as to facilitate the disassembly and installation of the electric power driving device without changing the frame structure of the bicycle. The driving wheel adopts a shaft-outlet motor, and the motor output shaft is fixed to the bracket and a friction wheel is provided on the motor body to drive the walking wheel to rotate, which simplifies the driving process, has a simple overall structure, is easy to install, and is convenient for daily maintenance.

[0007] According to one aspect of the above technical solution, a avoidance groove for accommodating the motor wire of the shaft-outlet motor is provided through the middle of the motor output shaft.

[0008] According to one aspect of the above technical solution, the motor output shaft includes a key shaft portion connected to the mounting portion, and an extension portion provided on one side of the key shaft portion, the extension portion and the mounting portion are fixed by a nut, a threaded groove corresponding to the nut is provided on the outer wall of the extension portion, and a card slot corresponding to the key shaft portion is provided on the mounting portion.

[0009] According to one aspect of the above technical solution, a plurality of assembly grooves corresponding to the bolts are provided on the fixing plate and the fixing portion.

[0010] According to one aspect of the above technical solution, a buckle for receiving the motor wire is provided on a side of the mounting portion away from the fixing portion.

[0011] According to one aspect of the above technical solution, the friction wheel is made of rubber.

[0012] On the other hand, the utility model also provides a bicycle, including a frame and a running wheel arranged on one side of the frame. The bicycle also includes the electric power driving device in the above technical solution, the driving wheel abuts against the running wheel, and the bracket assembly is fixed on the frame.

[0013] According to one aspect of the above technical solution, the bicycle further includes a power supply assembly detachably provided on the frame, and the power supply assembly is connected to the motor wire of the shaft-outgoing motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the electric power-assisted driving device in the first embodiment of the present utility model;

[0015] Figure 2 This is a partial structural diagram of the electric power-assisted driving device in the first embodiment of the utility model;

[0016] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0017] Description of main component symbols:

[0018] L-shaped card plate 11, mounting portion 11a, fixing portion 11b, fixing plate 12, bolt 13, assembly groove 14, screw hole 15, card slot 16, shaft outlet motor body 21, friction wheel 22, motor output shaft 23, extension portion 23a, key shaft portion 23b, avoidance groove 23c, nut 24,

[0019] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] See also Figures 1 to 3 , shown is an electric power-assisted drive device in the first embodiment of the present utility model, which is used to drive the walking wheel of a bicycle. The electric power-assisted drive device includes a driving wheel and a bracket assembly for fixing the driving wheel, the bracket assembly includes an L-shaped card plate 11, the L-shaped card plate 11 includes a fixing portion 11b and a mounting portion 11a vertically arranged on one side of the fixing portion 11b, the driving wheel is provided on the side of the mounting portion 11a close to the fixing portion 11b, the driving wheel includes an axial-line motor and a friction wheel 22 arranged on the outside of the axial-line motor, the axial-line motor includes a axial-line motor body 21, and a motor output shaft 23 rotatably arranged on one side of the axial-line motor body 21, the motor output shaft 23 is fixed on the mounting portion 11a, and the friction wheel 22 is fixed on the axial-line motor body 21, the bracket assembly also includes a fixing plate 12 arranged on one side of the fixing portion 11b, and the fixing plate 12 and the fixing portion 11b are detachably connected by bolts 13.

[0024] For ease of understanding, the above-mentioned shaft-outlet motor is a conventional commercially available motor. The shaft-outlet motor in this embodiment is purchased from Shenzhen Zhongqu Motor Co., Ltd., and its model is RBE.533236-036BK90.

[0025] Specifically, in this embodiment, a clearance groove 23c is formed through the middle of the motor output shaft 23 to accommodate the motor wires (not shown) of the shaft-out motor. The design of the clearance groove 23c simplifies the routing of the motor wires, reducing the complexity and time cost of installation. Furthermore, since the motor wires can be hidden along the clearance groove 23c, the overall aesthetics of the bicycle are not affected. Furthermore, the design requirement of utilizing the motor body to drive the friction wheel 22 is met, preventing the motor wires from rotating relative to the motor body.

[0026] Furthermore, in this embodiment, the motor output shaft 23 includes a key shaft portion 23b connected to the mounting portion 11a, and an extension portion 23a provided on one side of the key shaft portion 23b. The extension portion 23a is fixed to the mounting portion 11a via a nut 24. A threaded groove corresponding to the nut 24 is provided on the outer wall of the extension portion 23a, and a slot 16 corresponding to the key shaft portion 23b is provided on the mounting portion 11a. During installation, the motor output shaft 23 first needs to be docked with the slot 16 of the mounting portion 11a, and then the extension portion 23a needs to be passed through the mounting portion 11a and the nut 24 needs to be tightened on the threaded groove of the extension portion 23a to achieve relative fixation of the motor output shaft 23 and the L-shaped card plate 11.

[0027] Preferably, in this embodiment, the fixing plate 12 and the fixing portion 11b are each provided with a plurality of mounting slots 14 corresponding to the bolts 13. The bolts 13 are secured by the mounting slots 14. During use, the fixing plate 12 and the L-shaped clamping plate are respectively arranged on either side of the frame and secured by the bolts 13. The design of the plurality of mounting slots 14 facilitates adjustment of the fixing position of the bolts 13 to accommodate the installation and fixation of frames of varying dimensions.

[0028] Preferably, in this embodiment, a clip for receiving the motor cable is provided on a side of the mounting portion 11a away from the fixing portion 11b. Specifically, a screw hole 15 for securing the clip is provided on the L-shaped clip plate 11. By providing the clip to receive the motor cable, the clip prevents the cable from shaking and interfering during driving, improving the neatness and aesthetics of the entire electric power-assisted drive device. Furthermore, the clip firmly clamps the motor cable, effectively securing its position and reducing safety hazards caused by loose or falling motor cables.

[0029] In summary, the electric power-assisted drive device in the above-mentioned embodiment of the present invention fixes the driving wheel by providing an L-shaped card plate 11 and a fixing plate 12 on the L-shaped card plate 11, so as to facilitate the disassembly and installation of the electric power-assisted drive device without changing the frame structure of the bicycle. The driving wheel adopts a shaft-outlet motor, and the motor output shaft 23 is fixed to the bracket and a friction wheel 22 is provided on the motor body to drive the walking wheel to rotate, thereby simplifying the driving process, and the overall structure is simple, easy to install, and convenient for daily maintenance.

[0030] A second embodiment of the present invention provides a bicycle, comprising a frame and a running wheel provided on one side of the frame. The bicycle further comprises the electric power-assisted drive device of the above embodiment, the drive wheel abuts against the running wheel, and the bracket assembly is fixed to the frame.

[0031] Specifically, in this embodiment, the bicycle further includes a power supply assembly detachably mounted on the frame, and the power supply assembly is connected to the motor wire of the shaft-outgoing motor.

[0032] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0033] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An electric power-assisted driving device for driving the running wheels of a bicycle, characterized in that: The electric power-assisted drive device includes a drive wheel and a bracket assembly for fixing the drive wheel, the bracket assembly includes an L-shaped card plate, the L-shaped card plate includes a fixing portion and a mounting portion vertically arranged on one side of the fixing portion, the drive wheel is provided on a side of the mounting portion close to the fixing portion, the drive wheel includes an axial-line motor and a friction wheel arranged on the outside of the axial-line motor, the axial-line motor includes a axial-line motor body, and a motor output shaft rotatably arranged on one side of the axial-line motor body, the motor output shaft is fixed on the mounting portion, the friction wheel is fixed on the axial-line motor body, the bracket assembly also includes a fixing plate provided on one side of the fixing portion, and the fixing plate and the fixing portion are detachably connected by bolts.

2. The electric power-assisted driving device according to claim 1, characterized in that: A avoidance groove for accommodating the motor wire of the shaft-outlet motor is provided through the middle of the motor output shaft.

3. The electric power-assisted driving device according to claim 1, characterized in that: The motor output shaft includes a key shaft portion connected to the mounting portion, and an extension portion provided on one side of the key shaft portion. The extension portion and the mounting portion are fixed by a nut. A threaded groove corresponding to the nut is provided on the outer wall of the extension portion, and a card slot corresponding to the key shaft portion is provided on the mounting portion.

4. The electric power-assisted driving device according to claim 1, characterized in that: The fixing plate and the fixing portion are both provided with a plurality of assembly grooves corresponding to the bolts.

5. The electric power-assisted driving device according to claim 2, characterized in that: A buckle for receiving the motor wire is provided on a side of the mounting portion away from the fixing portion.

6. The electric power-assisted driving device according to claim 1, characterized in that: The friction wheel is made of rubber.

7. A bicycle comprising a frame and a running wheel provided on one side of the frame, characterized in that: The bicycle further comprises the electric power-assisted driving device according to any one of claims 1 to 6, the driving wheel abuts against the running wheel, and the bracket assembly is fixed to the frame.

8. The bicycle according to claim 7, characterized in that The bicycle further comprises a power supply assembly detachably arranged on the frame, and the power supply assembly is connected to the motor line of the shaft-outlet motor.

Images