Mounting structure and driving method of motor of electric motorcycle

Abstract

The invention relates to the technical field of electric motorcycles, in particular to a mounting structure and a driving method of an electric motorcycle motor, the mounting structure of the electric motorcycle motor is simple and convenient to assemble, a bottom fork structure is simplified, the cost is reduced, and meanwhile, an adopted center shaft motor is light and small in size and convenient to mount. The small chain wheel assembly is installed at the center position of a bottom fork shaft of a frame, a left bottom fork and a right bottom fork, the whole vehicle assembling space can be saved, the whole vehicle weight is reduced, in addition, in the aspect of power output, an outer rotor of a center shaft motor rotates to drive the small chain wheel assembly to rotate, then rotating force of the small chain wheel assembly is transmitted to a rear wheel through chain transmission, and the rear wheel rotates. And the motor shaft is fixed, so that the transmission is more stable and low in noise, and the technical problems that the motor needs to be fixed by using a bottom fork when the existing motor is actually installed, the manufacturing cost of the used bottom fork is high, the weight and the size of the whole frame are increased, and the motor is inconvenient to install are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric motorcycles, and in particular to a mounting structure and a driving method of a motor of an electric motorcycle. Background Art

[0002] Electric motorcycles are improved from electric bicycles. Electric motorcycles usually use electric motors as their power source. The motor is usually installed on the rear wheel hub of the electric motorcycle. The power is transmitted to the rear wheel by the rotation of the motor shaft, thereby achieving power output.

[0003] When the existing electric motorcycle is in use, the electric motorcycle cannot be driven safely due to the high speed of the motor. Therefore, a reducer needs to be arranged behind the output shaft of the motor to transmit power to the hub of the rear wheel after the motor speed reaches a safe speed range.

[0004] When the motor is actually installed, it is usually necessary to set a flat fork fixed to the frame on both sides of the rear wheel hub of the electric motorcycle to fix the motor. Since the manufacturing cost of the flat fork is high, the use cost of the electric motorcycle is greatly increased. At the same time, the added flat fork will also increase the weight and volume of the entire frame. In addition, since the motor used in the electric motorcycle has a large power, the volume of the motor is large, and the motor is located in the flat fork, which makes it inconvenient to install the motor. Summary of the invention

[0005] The purpose of the present invention is to provide an installation structure and a driving method for an electric motorcycle motor, which solves the technical problems that, during the actual installation of the existing motor, a flat fork is needed to fix the motor, the flat fork used has high manufacturing cost, increases the weight and volume of the entire frame, and is inconvenient to install the motor.

[0006] To achieve the above-mentioned purpose, the present invention provides an installation structure of an electric motorcycle motor, comprising a frame, a right fork, a motor shaft, a middle shaft motor, a left fork, a small sprocket assembly and a rear wheel, wherein the left fork and the right fork are respectively arranged on the left and right sides of the frame, the motor shaft respectively passes through the frame, the left fork and the right fork, and is arranged in the frame, the left fork and the right fork, the middle shaft motor is arranged outside the motor shaft and is located between the left fork and the right fork, the small sprocket assembly is arranged on the left side outside the middle shaft motor, and the rear wheel is connected to the small sprocket assembly by a chain to transmit power to the rear wheel.

[0007] Wherein, the motor shaft is coaxially assembled with the fork shafts of the left fork and the right fork.

[0008] Wherein, the left flat fork and the right flat fork are both fixed to the left and right sides of the motor shaft by fasteners.

[0009] Among them, the fastener includes a right fork bushing, a first oil seal, a first gasket and a right needle roller bearing. Before assembling the right fork, the right fork bushing, the first oil seal, the first gasket and the right needle roller bearing need to be pre-installed in sequence at the right fork.

[0010] Among them, the fastener also includes a left fork bushing, a fourth oil seal, a fourth gasket and a left needle roller bearing. Before assembling the left fork, the left fork bushing, the fourth oil seal, the fourth gasket and the left needle roller bearing need to be pre-installed in sequence at the left fork.

[0011] When assembling the motor shaft, the small sprocket assembly, the third gasket, the third oil seal and the left flat fork need to be installed in sequence on the left side of the motor shaft, and the second gasket, the second oil seal and the right flat fork need to be installed in sequence on the right side of the motor shaft.

[0012] The present invention also provides a method for driving the mounting structure of an electric motorcycle motor, comprising the following steps:

[0013] The middle shaft motor is powered on and started, and the power outputted from the output end of the middle shaft motor drives the small sprocket assembly to rotate;

[0014] When the small sprocket assembly rotates, the small sprocket assembly transmits the power of rotation to the rear wheel via the chain, so that the rear wheel rotates;

[0015] The rotation of the rear wheel drives the electric motorcycle to run on the ground, thereby realizing the driving operation of the electric motorcycle.

[0016] The present invention discloses an installation structure and a driving method for an electric motorcycle motor. The installation structure of the electric motorcycle motor is simple and convenient to assemble, simplifies the fork structure, and reduces the cost. At the same time, the central axis motor used is light and compact, and is installed at the center position of the fork shaft between the frame and the left and right forks, which can save the assembly space of the whole vehicle and reduce the weight of the whole vehicle. In addition, in terms of power output, the small sprocket assembly is driven to rotate by the rotation of the outer rotor of the central axis motor, and the rotational force of the small sprocket assembly is transmitted to the rear wheel through a chain drive, so that the rear wheel rotates, while the motor shaft is fixed. Such transmission is smoother and has less noise, which solves the technical problems that the existing motor needs to be fixed with a fork during actual installation, and the fork used has high manufacturing cost, increases the weight and volume of the entire frame, and is inconvenient to install the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0018] Figure 1 It is a schematic diagram of the overall structure of the installation structure of the electric motorcycle motor according to the first embodiment of the present invention.

[0019] Figure 2 1 is a front view of the mounting structure of the electric motorcycle motor according to the first embodiment of the present invention.

[0020] Figure 3 It is an exploded schematic diagram of the installation of the middle shaft motor, the left fork, the right fork and the frame of the first embodiment of the present invention.

[0021] Figure 4 It is a schematic diagram of the installation of the middle shaft motor and the left and right parallel forks according to the first embodiment of the present invention.

[0022] Figure 5 It is an exploded schematic diagram of the installation of the middle shaft motor and the left and right parallel forks according to the first embodiment of the present invention.

[0023] Figure 6 It is an exploded schematic diagram of the installation of the middle shaft motor and the small sprocket assembly and the left and right parallel forks according to the first embodiment of the present invention.

[0024] Figure 7 1 is a flowchart of a method for driving an electric motorcycle motor mounting structure according to a second embodiment of the present invention.

[0025] In the figure: 101-right fork, 102-right fork bushing, 103-first oil seal, 104-first gasket, 105-right needle bearing, 106-second oil seal, 107-second gasket, 108-middle shaft motor, 109-motor shaft, 110-small sprocket assembly, 111-third gasket, 112-third oil seal, 113-left needle bearing, 114-fourth gasket, 115-fourth oil seal, 116-left fork bushing, 117-left fork, 118-frame, 119-mounting hole, 120-rear wheel. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0027] First embodiment:

[0028] See also Figures 1 to 6The present invention provides an installation structure of an electric motorcycle motor, including a frame 118, a right fork 101, a motor shaft 109, a middle shaft motor 108, a left fork 117, a small sprocket assembly 110 and a rear wheel 120.

[0029] In this embodiment, the installation structure of the electric motorcycle motor adopted by the present invention is simple and convenient to assemble, simplifies the fork structure, and reduces the cost. At the same time, the central axis motor 108 adopted is light and compact, and is installed at the center position of the fork axis of the frame 118 and the left fork 117 and the right fork 101, which can save the assembly space of the whole vehicle and reduce the weight of the whole vehicle. In addition, in terms of power output, the small sprocket assembly 110 is driven to rotate by the rotation of the outer rotor of the central axis motor 108, and then the rotational force of the small sprocket assembly 110 is transmitted to the rear wheel 120 through chain transmission, so that the rear wheel 120 rotates, while the motor shaft 109 is fixed. Such transmission is smoother and has less noise, which solves the technical problems that the existing motor needs to be fixed with a fork during actual installation, and the fork used has high manufacturing cost, increases the weight and volume of the entire frame 118, and is inconvenient to install the motor.

[0030] The left and right sides of the frame 118 are respectively provided with the left fork 117 and the right fork 101, the motor shaft 109 respectively penetrates the frame 118, the left fork 117 and the right fork 101, and is arranged in the frame 118, the left fork 117 and the right fork 101, the middle shaft motor 108 is arranged outside the motor shaft 109 and is located between the left fork 117 and the right fork 101, the small sprocket assembly 110 is arranged on the left side outside the middle shaft motor 108, and the rear wheel 120 is connected to the small sprocket assembly 110. 10 are connected by a chain to transmit power to the rear wheel 120, and the axis of the motor shaft 109 is coaxially installed at the center hole of the frame with the axis of the left fork 117 and the axis of the right fork 101, which is easy and quick to install and has high space utilization. The motor used is light and compact, low in cost, and saves assembly space for the whole vehicle. In addition, the motor shaft 109 is also used as the middle shaft motor 108 and is coaxial with the left fork 117 and the right fork 101, thereby simplifying the fork structure, reducing the manufacturing cost of the fork, and is easy and quick to install with the frame, saving assembly space.

[0031] Secondly, the motor shaft 109 is coaxially assembled with the fork shafts of the left fork 117 and the right fork 101, the motor shaft 109 is coaxially arranged with the middle axis motor 108, and the middle axis motor 108 is located at the exact center of the frame 118, and the left fork 117 and the right fork 101 are assembled at the center origin of the frame 118 through the motor shaft 109.

[0032] In addition, the left fork 117 and the right fork 101 are fixed to the left and right sides of the motor shaft 109 by fasteners, and the fasteners include a right fork bushing 102, a first oil seal 103, a first gasket 104 and a right needle roller bearing 105. Before assembling the right fork 101, it is necessary to pre-install the right fork bushing 102, the first oil seal 103, the first gasket 104 and the right needle roller bearing 105 in sequence at the right fork 101, wherein the right fork bushing 102, the first oil seal 103, the first gasket 104 and the right needle roller bearing 105 are installed parts inside the shaft hole of the right fork 101, in order to realize the installation structure of the right fork 101 and the motor shaft 109, Whether the above parts are needed depends on the design of the flat fork structure. The fasteners also include a left flat fork bushing 116, a fourth oil seal 115, a fourth gasket 114 and a left needle roller bearing 113. Before assembling the left flat fork 117, the left flat fork bushing 116, the fourth oil seal 115, the fourth gasket 114 and the left needle roller bearing 113 need to be pre-installed in sequence at the left flat fork 117. The left flat fork bushing 116, the fourth oil seal 115, the fourth gasket 114 and the left needle roller bearing 113 are installed parts inside the shaft hole of the left flat fork 117. In order to realize the installation structure requirements of the left flat fork 117 and the motor shaft 109, whether the above parts are needed depends on the design of the flat fork structure.

[0033] Finally, when assembling the motor shaft 109, the small sprocket assembly 110, the third gasket 111, the third oil seal 112 and the left flat fork 117 need to be installed in sequence on the left side of the motor shaft 109, and the second gasket 107, the second oil seal 106 and the right flat fork 101 need to be installed in sequence on the right side of the motor shaft 109.

[0034] When using the installation structure of an electric motorcycle motor of the present embodiment, the small sprocket assembly 110 is fastened and assembled with the left end of the middle shaft motor 108, and then the right fork 101 and the left fork 117 are respectively assembled on the left and right ends of the middle shaft motor 108 through their own fork shaft holes through the motor shaft 109, and the left and right ends of the motor shaft 109 are assembled in the mounting holes of the A and B frames, that is, the assembly of the middle shaft motor 108, the left fork 117, the right fork 101, the small sprocket assembly 110, the motor shaft 109 and the frame is completed, so that the coaxial installation of the motor shaft 109, the axis of the left fork 117 and the right fork 101 and the frame mounting axis can be achieved, and then the left fork 117 is sequentially installed in the left fork 117. The left fork bushing 116, the fourth oil seal 115, the fourth gasket 114 and the left needle roller bearing 113 are sequentially installed at the right fork 101, and then, the third gasket 111, the third oil seal 112 and the left fork 117 are sequentially installed on the left side of the motor shaft 109 near the small sprocket assembly 110, and the second gasket 107, the second oil seal 106 and the right fork 101 are sequentially installed on the right side of the motor shaft 109. After all the above parts are assembled, the motor shaft 109 is installed in the mounting holes 119 on the left and right sides of the frame 118, thereby completing the assembly of the middle shaft motor 108 and the frame 118.

[0035] After the assembly is completed, the middle axis motor 108 is energized so that the middle axis motor 108 starts gradually. When the middle axis motor 108 starts, the power output through the output end of the middle axis motor 108 can drive the small sprocket assembly 110 to rotate outside the motor shaft 109 along the axis of the motor shaft 109. When the small sprocket assembly 110 rotates along the axis of the motor shaft 109, the small sprocket assembly 110 can transmit the power during rotation to the rear wheel 120 through the chain, so that the rear wheel 120 rotates. Through the rotation of the rear wheel 120, the electric motorcycle can be driven to run on the ground, the power output is completed, and finally the driving operation of the electric motorcycle is realized.

[0036] In summary, the installation structure of the electric motorcycle motor adopted by the present invention is simple and convenient to assemble, simplifies the fork structure, and reduces the cost. At the same time, the central axis motor 108 adopted is light and compact, and is installed at the center position of the fork axis of the frame 118, the left fork 117 and the right fork 101, which can save the assembly space of the whole vehicle and reduce the weight of the whole vehicle. In addition, in terms of power output, the small sprocket assembly 110 is driven to rotate by the rotation of the outer rotor of the central axis motor 108, and then the rotational force of the small sprocket assembly 110 is transmitted to the rear wheel 120 through chain transmission, so that the rear wheel 120 rotates, while the motor shaft 109 is fixed. Such transmission is smoother and has less noise, which solves the technical problems that the existing motor needs to be fixed with a fork during actual installation, and the fork used has high manufacturing cost, increases the weight and volume of the entire frame 118, and is inconvenient to install the motor.

[0037] Second embodiment:

[0038] Based on the first embodiment, please refer to Figure 7 The present invention also provides a method for driving the mounting structure of an electric motorcycle motor, comprising the following steps:

[0039] S101 , powering up the central axis motor 108 to start, and the power outputted from the output end of the central axis motor 108 drives the small sprocket assembly 110 to rotate.

[0040] Specifically, after the assembly is completed, the central axis motor 108 is energized so that the central axis motor 108 starts gradually. When the central axis motor 108 starts, the power output through the output end of the central axis motor 108 can drive the small sprocket assembly 110 to rotate outside the motor shaft 109 along the axis of the motor shaft 109.

[0041] S102, when the small sprocket assembly 110 rotates, the small sprocket assembly 110 transmits the power of rotation to the rear wheel 120 via the chain, so that the rear wheel 120 rotates.

[0042] Specifically, when the small sprocket assembly 110 rotates along the axis of the motor shaft 109, the small sprocket assembly 110 can transmit the power during rotation to the rear wheel 120 via a chain, so that the rear wheel 120 rotates.

[0043] S103, driving the electric motorcycle to run on the ground by the rotation of the rear wheel 120, thereby realizing the driving operation of the electric motorcycle.

[0044] Specifically, the rear wheel 120 rotates to drive the electric motorcycle to run on the ground, output power, and finally realize the driving operation of the electric motorcycle.

[0045] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An electric motorcycle motor mounting structure, comprising a frame, characterized in that: It also includes a right fork, a motor shaft, a middle axis motor, a left fork, a small sprocket assembly and a rear wheel. The left fork and the right fork are respectively arranged on the left and right sides of the frame. The motor shaft passes through the frame, the left fork and the right fork respectively and is arranged in the frame, the left fork and the right fork. The middle axis motor is arranged outside the motor shaft and is located between the left fork and the right fork. The small sprocket assembly is arranged on the left side outside the middle axis motor. The rear wheel is connected to the small sprocket assembly by a chain to transmit power to the rear wheel.

2. The mounting structure of the electric motorcycle motor according to claim 1, characterized in that: The motor shaft is coaxially assembled with the fork shafts of the left fork and the right fork.

3. The mounting structure of the electric motorcycle motor according to claim 1, characterized in that: The left flat fork and the right flat fork are both fixed to the left and right sides of the motor shaft by fasteners.

4. The mounting structure of the electric motorcycle motor according to claim 3, characterized in that: The fastener includes a right fork bushing, a first oil seal, a first gasket and a right needle roller bearing. Before assembling the right fork, the right fork bushing, the first oil seal, the first gasket and the right needle roller bearing need to be pre-installed in sequence at the right fork.

5. The mounting structure of the electric motorcycle motor according to claim 4, characterized in that: The fastener also includes a left fork bushing, a fourth oil seal, a fourth gasket and a left needle roller bearing. Before assembling the left fork, the left fork bushing, the fourth oil seal, the fourth gasket and the left needle roller bearing need to be pre-installed in sequence at the left fork.

6. The mounting structure of the electric motorcycle motor according to claim 5, characterized in that: When assembling the motor shaft, the small sprocket assembly, the third gasket, the third oil seal and the left flat fork need to be installed in sequence on the left side of the motor shaft, and the second gasket, the second oil seal and the right flat fork need to be installed in sequence on the right side of the motor shaft.

7. A driving method for an electric motorcycle motor mounting structure, applied to the electric motorcycle motor mounting structure according to any one of claims 1 to 6, characterized in that: The following steps are involved: The middle shaft motor is powered on and started, and the power outputted from the output end of the middle shaft motor drives the small sprocket assembly to rotate; When the small sprocket assembly rotates, the small sprocket assembly transmits the power of rotation to the rear wheel via the chain, so that the rear wheel rotates; The rotation of the rear wheel drives the electric motorcycle to run on the ground, thereby realizing the driving operation of the electric motorcycle.

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