A middle-mounted electric motorcycle motor

Abstract

The utility model relates to electric motor car technical field discloses a kind of electric motor car motor of middle placement, including protective shell, the inner bottom wall of protective shell is fixedly connected with backing plate, the utility model passes through polyurethane elastomer backing plate, absorbs the vibration energy generated when motor runs, play buffering effect, to reduce the amplitude of vibration transmission to external structure, effectively reduce the noise caused by vibration, simultaneously, sound insulation and noise reduction board of protective shell both sides, its internal fiber structure can produce multiple reflection and absorption to sound, further reduce noise propagation, the aperture of conical sound insulation hole on the surface of sound insulation and noise reduction board gradually decreases, so that sound is hindered and reflected by different aperture size when passing, effectively reduce the propagation intensity of sound, reach better sound insulation and noise reduction effect, significantly reduce the noise when electric motor car motor runs, avoid the adverse effects of traditional motor noise on riding comfort and surrounding living environment.

Description

Technical Field

[0001] This utility model relates to the field of electric motorcycle technology, and in particular to a mid-mounted electric motorcycle motor. Background Technology

[0002] In today's transportation sector, electric motorcycles, as a green and convenient mode of transportation, are gaining popularity among consumers. Among them, mid-drive electric motorcycles, with their unique design and performance advantages, are gradually becoming a popular choice in the market. The motor of a mid-drive electric motorcycle is its core power component. It is installed in the middle of the vehicle, usually located at the bottom or middle of the frame, and is closely connected to the vehicle's transmission system to provide power output for the vehicle.

[0003] Publication No. CN217010505U discloses a mid-drive motor for electric motorcycles, including a motor body, a first fixing plate and a second fixing plate respectively fixed at both ends of the motor body, and a heat dissipation device disposed on the side wall of the motor body. This utility model facilitates the installation and fixation of the motor body by providing the first fixing plate and the second fixing plate at both ends of the motor body, and can adapt to frames of different sizes; by providing a heat dissipation device on the outside of the motor body, it can reduce the heat dissipation difficulties in parts of the motor body through active cooling, thereby improving the stability and service life of the motor body.

[0004] The aforementioned device primarily reduces the temperature of the motor body through a cooling fan and a thermoelectric cooler. However, during operation, the airflow noise of the cooling fan and the heat exchange noise that the thermoelectric cooler may generate are unavoidable. For example, during the cooling and heating process, the internal electronic components of the thermoelectric cooler will generate weak electromagnetic noise. However, the article does not mention any measures to deal with these noise sources. Due to the lack of noise reduction function, during riding, especially when the electric motorcycle is traveling at high speed or the motor is under high load, the airflow noise generated by the cooling fan and the electromagnetic noise of the motor body may cause certain noise interference to the rider, affecting the riding comfort. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a mid-mounted electric motorcycle motor.

[0006] This utility model is achieved by the following technical solution: a mid-mounted electric motorcycle motor, including a protective shell, a pad fixedly connected to the inner bottom wall of the protective shell, a motor body fixedly installed on the upper surface of the pad, sound insulation and noise reduction plates fixedly connected to both sides of the inner wall of the protective shell, a plurality of conical sound insulation holes opened on the surface of the sound insulation and noise reduction plates, and a plurality of heat dissipation grooves opened on the surface of the protective shell.

[0007] The above technical solutions provide comprehensive physical protection for the motor body, preventing damage to the motor from external dust, debris, and impacts, extending the motor's service life, effectively reducing motor operating noise, minimizing noise interference to the surrounding environment and riders, improving user comfort, ensuring the motor's heat dissipation performance, preventing motor failure due to overheating, and improving the stability and reliability of motor operation.

[0008] As a further improvement to the above solution, the pad is made of polyurethane elastomer.

[0009] The above technical solutions improve the smoothness of motor operation, reduce the wear of internal motor components due to vibration, extend motor life, enhance the overall shock absorption performance of the motor, improve riding comfort, and reduce discomfort to the rider caused by motor vibration transmitted to the vehicle body.

[0010] As a further improvement to the above scheme, the diameter of the conical sound insulation hole decreases sequentially from the inside to the outside.

[0011] The above technical solutions have improved the efficiency and effectiveness of sound insulation and noise reduction.

[0012] As a further improvement to the above solution, the sound insulation and noise reduction board is made of glass wool.

[0013] Through the above technical solutions, glass wool, as a sound insulation and noise reduction board material, can provide excellent sound insulation effect, reduce motor noise, improve the quietness performance of electric motorcycles, and create a quieter driving environment for riders. Glass wool material has good high temperature resistance and can adapt to the heat environment generated during motor operation, ensuring the stability and reliability of the sound insulation and noise reduction board during long-term use.

[0014] As a further improvement to the above solution, a filter screen is fixedly installed on the surface of the heat dissipation groove.

[0015] The above technical solutions ensure the heat dissipation performance of the motor while preventing dust and debris from entering the protective shell, thus avoiding pollution and damage to the motor.

[0016] As a further improvement to the above solution, the inner top wall of the protective shell is fixedly mounted with a mounting frame by bolts, and a cooling fan is installed inside the mounting frame.

[0017] The above technical solution, through the forced cooling of the cooling fan, can more effectively reduce the operating temperature of the motor, improve the stability of the motor under high load and long-term operation, and prevent the motor from malfunctioning due to overheating.

[0018] As a further improvement to the above solution, the cooling fan is located above the motor body, and a transmission rod is fixedly connected to the output end of the motor body.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention uses a polyurethane elastomer pad to absorb the vibration energy generated during motor operation, thus buffering the vibration and reducing the amplitude of vibration transmitted to the external structure. This effectively reduces noise caused by vibration. At the same time, the sound insulation and noise reduction plates on both sides of the protective shell have internal fiber structures that can reflect and absorb sound multiple times, further reducing noise transmission. The diameter of the tapered sound insulation holes on the surface of the sound insulation and noise reduction plates decreases sequentially, so that sound is blocked and reflected by different hole sizes when passing through, effectively reducing the intensity of sound transmission and achieving better sound insulation and noise reduction effect. This significantly reduces the noise of the electric motorcycle motor during operation, avoiding the adverse effects of traditional motor noise on riding comfort and the surrounding living environment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the sound insulation and noise reduction board of this utility model;

[0023] Figure 3 This is a schematic diagram of the conical sound insulation hole of this utility model;

[0024] Figure 4 This is a schematic diagram of the cooling fan of this utility model.

[0025] Explanation of key symbols:

[0026] 1. Protective shell; 2. Pad plate; 3. Motor body; 4. Sound insulation and noise reduction plate; 5. Conical sound insulation hole; 6. Heat dissipation groove; 7. Filter screen; 8. Mounting frame; 9. Cooling fan; 10. Transmission rod. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] Example:

[0029] Please combine Figure 1-4This embodiment of a mid-mounted electric motorcycle motor includes a protective shell 1. A pad 2 is fixedly connected to the inner bottom wall of the protective shell 1. A motor body 3 is fixedly installed on the upper surface of the pad 2. Sound insulation and noise reduction plates 4 are fixedly connected to both sides of the inner wall of the protective shell 1. Several conical sound insulation holes 5 are opened on the surface of the sound insulation and noise reduction plates 4. Several heat dissipation grooves 6 are opened on the surface of the protective shell 1. The protective shell 1 serves as the external protective structure of the entire motor. The pad 2 fixedly connected to its inner bottom wall plays a stable supporting role, firmly installing the motor body 3 on the pad 2, ensuring the stability of the motor position during operation. The sound insulation and noise reduction plates 4 on both sides of the inner wall of the protective shell 1 can effectively block the noise generated by the motor from spreading outward. The conical sound insulation holes 5 on their surface can further enhance the sound insulation effect, reducing noise by changing the sound propagation path and reflection characteristics. At the same time, the heat dissipation grooves 6 on the surface of the protective shell 1 provide a heat dissipation channel when the motor generates heat during operation, allowing the heat to be dissipated to the external environment in a timely manner, maintaining the internal temperature of the motor within a reasonable range, and ensuring the normal operation of the motor.

[0030] The pad 2 is made of polyurethane elastomer. Polyurethane elastomer has good elasticity, cushioning performance and mechanical strength. When the motor vibrates during operation, the polyurethane elastomer pad 2 can absorb some of the vibration energy and play a shock absorption role, reducing the adverse effects of vibration on the motor body 3 and other internal components of the protective shell 1. At the same time, it can also reduce the amplitude of vibration transmitted to the external structure, further reducing noise generation.

[0031] The diameter of the conical sound insulation hole 5 decreases from the inside to the outside, so that when the sound passes through the sound insulation hole, it will be blocked and reflected by different hole sizes. When the sound enters the inner side with a larger hole size, some of the energy is reflected back into the motor. When it enters the outer side with a smaller hole size, the sound propagation path is more tortuous due to the smaller hole size, and the energy is further consumed and attenuated, thereby effectively reducing the sound propagation intensity and achieving a better sound insulation and noise reduction effect.

[0032] The sound insulation and noise reduction board 4 is made of glass wool, a fibrous thermal insulation material with excellent sound absorption properties. Its internal fiber structure can reflect and absorb sound multiple times. When the noise generated by the motor travels to the glass wool sound insulation and noise reduction board 4, the sound energy is absorbed and consumed by the glass wool fibers, thereby effectively reducing the transmission of noise and achieving a good sound insulation and noise reduction effect.

[0033] A filter screen 7 is fixedly installed on the surface of the heat dissipation slot 6. When air flows through the heat dissipation slot 6 to remove heat from the motor, the filter screen 7 can effectively block external dust, debris, etc. from entering the interior of the protective shell 1. This prevents these impurities from adhering to the motor body 3 and internal components, avoiding the impact of dust accumulation on the motor's heat dissipation performance and normal operation. At the same time, it can also keep the interior of the protective shell 1 clean and extend the service life of the motor and related components.

[0034] The inner top wall of the protective shell 1 is fixed with a mounting frame 8 by bolts. A cooling fan 9 is installed inside the mounting frame 8. The cooling fan 9 is turned on when the motor is running. It accelerates the air flow by forced convection and quickly removes the heat generated by the motor from the area around the motor body 3. The cooling fan 9 is located above the motor body 3, which can more effectively exhaust the hot air upward and form a good air circulation.

[0035] The cooling fan 9 is located above the motor body 3, and the output end of the motor body 3 is fixedly connected to the transmission rod 10.

[0036] The implementation principle of a mid-mounted electric motorcycle motor in this embodiment is as follows: When the motor vibrates during operation, the polyurethane elastomer pad 2 can absorb some of the vibration energy, playing a damping role and reducing the adverse effects of vibration on the motor body 3 and other internal components of the protective shell 1. It also reduces the amplitude of vibration transmitted to the external structure. Sound insulation and noise reduction panels 4, made of glass wool, are fixedly connected to both sides of the inner wall of the protective shell 1. Glass wool is a fibrous thermal insulation material with excellent sound absorption properties. Its internal fiber structure can reflect and absorb sound multiple times. When the noise generated by the motor travels to the glass wool sound insulation and noise reduction panel 4, the sound energy is absorbed and consumed by the glass wool fibers, thereby effectively reducing noise transmission and achieving good sound insulation and noise reduction. The surface of the sound insulation and noise reduction panel 4 has several conical sound insulation holes 5. The diameter of the conical sound insulation holes 5 decreases from the inside to the outside, so that when the sound passes through the sound insulation holes, it will be blocked and reflected by different hole sizes. When the sound enters the inner side with a larger hole size, some of the energy is reflected back into the motor. When it enters the outer side with a smaller hole size, the sound propagation path is more tortuous due to the smaller hole size, and the energy is further consumed and attenuated, thereby effectively reducing the sound propagation intensity and achieving a better sound insulation and noise reduction effect. The cooling fan 9 is turned on when the motor is running, and accelerates the air flow through forced convection to quickly remove the heat generated by the motor from the area around the motor body 3. When the air flows through the heat dissipation slots 6 to remove the heat from the motor, the filter screen 7 can effectively block external dust, debris and other objects from entering the protective shell 1, preventing these impurities from adhering to the motor body 3 and internal components, and avoiding the impact of dust accumulation on the motor's heat dissipation performance and normal operation.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A mid-mounted electric motorcycle motor, characterized in that, The device includes a protective shell (1), a pad (2) is fixedly connected to the inner bottom wall of the protective shell (1), a motor body (3) is fixedly installed on the upper surface of the pad (2), and sound insulation and noise reduction plates (4) are fixedly connected to both sides of the inner wall of the protective shell (1). The surface of the sound insulation and noise reduction plate (4) is provided with several conical sound insulation holes (5), and the surface of the protective shell (1) is provided with several heat dissipation grooves (6).

2. The mid-mounted electric motorcycle motor as described in claim 1, characterized in that: The pad (2) is made of polyurethane elastomer.

3. The mid-mounted electric motorcycle motor as described in claim 1, characterized in that: The diameter of the conical sound insulation hole (5) decreases sequentially from the inside to the outside.

4. A mid-mounted electric motorcycle motor as described in claim 1, characterized in that: The sound insulation and noise reduction board (4) is made of glass wool.

5. A mid-mounted electric motorcycle motor as described in claim 1, characterized in that: A filter screen (7) is fixedly installed on the surface of the heat dissipation groove (6).

6. A mid-mounted electric motorcycle motor as described in claim 1, characterized in that: The inner top wall of the protective shell (1) is fixedly installed with a mounting frame (8) by bolts, and a cooling fan (9) is provided inside the mounting frame (8).

7. A mid-mounted electric motorcycle motor as described in claim 6, characterized in that: The cooling fan (9) is located above the motor body (3), and the output end of the motor body (3) is fixedly connected to the transmission rod (10).

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