Driving assembly

Abstract

The utility model discloses a driving assembly which comprises a middle bottom fork and a middle shell fixedly connected with the middle bottom fork. The axis of the speed reducer and the axis of the motor are arranged in parallel, the speed reducer and the motor are arranged on the two sides of the middle shell respectively, and the middle shell at least covers partial areas of the speed reducer and the motor; and the controller is arranged in the controller shell, the controller shell is fixedly arranged on the middle bottom fork, and heat dissipation ribs back to the motor are arranged on the controller shell. According to the driving assembly, the speed reducer and the motor are arranged in parallel in the axial direction of the motor and are fixedly connected with the middle bottom fork through the middle shell, the speed reducer and the motor are arranged on the two sides of the middle shell respectively, the structure is compact, meanwhile, the controller is arranged on the middle bottom fork so as to be located on the same main body structure with the motor, and the structure is compact. And through the arrangement close to the motor, the feedback response speed is increased, and the wiring harness arrangement difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, in particular to a drive assembly. Background Art

[0002] In the field of drive equipment, traditional motor drive systems are usually composed of independent components such as motors, reducers and controllers. These components are usually arranged separately and connected by relatively complex wiring harnesses, which will occupy a large installation space and have a certain transmission or feedback distance. As the demand for efficient, compact and lightweight design of drive systems increases, the limitations of existing technologies are gradually emerging. The motors in the existing technology are mostly radial magnetic field motors, and their structure results in a long axial length of the motor, which is not conducive to achieving compact vehicle design. In addition, the independent layout of the reducer and motor increases the complexity of the system, makes the wiring harness arrangement cumbersome and prone to damage, and also increases the weight and volume of the system.

[0003] Therefore, how to improve the integration and lightweight of the drive system including the motor is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a drive assembly that has high integration and meets lightweight design requirements.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A drive assembly comprising:

[0007] A center fork and an intermediate housing fixedly connected to the center fork;

[0008] A reducer and a motor, wherein the reducer is arranged parallel to the axis of the motor and is respectively arranged on both sides of the intermediate housing, and the intermediate housing at least covers a portion of the reducer and the motor;

[0009] The controller is arranged inside the controller housing, the controller housing is fixedly arranged on the middle flat fork, and the controller housing is provided with heat dissipation ribs arranged back to the motor.

[0010] Preferably, in the above-mentioned drive assembly, the middle flat fork is spaced apart from the intermediate housing to form a receiving cavity, the receiving cavity connects the controller and the motor, and the control wiring harness is embedded in the receiving cavity.

[0011] Preferably, in the above-mentioned drive assembly, the control wiring harness includes at least a motor high-voltage three-phase line and a motor low-voltage signal line.

[0012] Preferably, in the above drive assembly, the motor is a permanent magnet synchronous motor and is connected to the reducer via a chain or belt transmission.

[0013] Preferably, in the above-mentioned drive assembly, the reducer and the motor are parallel and fit together at one end in the axial direction.

[0014] Preferably, in the above-mentioned drive assembly, the controller housing is arranged parallel to the axis of the motor, and is combined with the reducer and the motor to form an L-configuration.

[0015] Preferably, in the above-mentioned drive assembly, the intermediate housing is extended along a single side direction of the central fork and is combined with the central fork to form a side fork structure.

[0016] Preferably, in the above-mentioned drive assembly, the heat dissipation ribs are arranged on a plurality of heat dissipation windows evenly opened on the controller housing, and adjacent heat dissipation ribs are arranged at intervals to form heat dissipation gaps for air flow to pass through.

[0017] Preferably, in the above-mentioned drive assembly, the reducer is fixedly connected to the surrounding vehicle body structure through a shock-absorbing bracket.

[0018] Preferably, the above-mentioned drive assembly further includes a connecting bracket, and two connecting brackets are symmetrically arranged on the outer walls of both sides of the controller housing.

[0019] As can be seen from the above technical solution, the drive assembly provided by the present invention fixedly connects the center fork and the intermediate housing as the basic bearing structure, and at the same time, the reducer and the motor are respectively arranged on both sides of the intermediate housing and arranged in parallel, so that a single intermediate housing can simultaneously shield and protect part of the area on the reducer and the motor. At the same time, the controller housing for setting the controller is also fixedly set on the center fork. The various components are compactly arranged on the integrated structure of the center fork and the intermediate housing, so that the drive assembly has a good integrated setting effect; and the shared housing setting of the reducer and the motor can reduce the material consumption of the drive assembly and improve the lightweight design goal. In addition, heat dissipation ribs are set on the controller housing to accelerate heat dissipation, and the side of the controller housing where the heat dissipation ribs are set is facing away from the motor, so as to be set towards the windward side of the vehicle body during operation, thereby achieving the optimal heat dissipation effect to improve the operating stability of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the drive assembly structure provided by an embodiment of the present utility model;

[0022] Figure 2 Schematic diagram of a top view of the drive assembly;

[0023] Figure 3 for Figure 2 Schematic diagram of a partial cross-section structure;

[0024] Figure 4 It is a structural diagram of one side of the controller housing.

[0025] Among them, 10-middle flat fork; 20-middle shell; 210-accommodation chamber; 30-reducer; 40-motor; 50-controller; 60-controller shell; 610-heat dissipation rib; 710-motor high-voltage three-phase line; 720-motor low-voltage signal line; 80-shock-absorbing bracket; 90-connecting bracket. DETAILED DESCRIPTION

[0026] The core of the utility model is to disclose a drive assembly with high integration and meeting the requirements of lightweight design.

[0027] In order to help those skilled in the art better understand the present invention, the following describes embodiments of the present invention with reference to the accompanying drawings. Furthermore, the embodiments described below do not limit the scope of the invention as set forth in the claims. Furthermore, the entire contents of the embodiments described below are not necessarily required to serve as the solution of the invention as set forth in the claims.

[0028] like Figure 1-4 As shown, the drive assembly provided by the embodiment of the present invention has core components including a center fork 10, an intermediate housing 20, a reducer 30, a motor 40 and a controller 50. Among them, the center fork 10 is a basic load-bearing structure, which can be made of high-strength aluminum alloy material through high-precision CNC processing technology, ensuring the stability of its structure and the overall lightweight requirements. The intermediate housing 20 is fixedly connected to the center fork 10 by bolt connection or welding connection to form an integrated structure and enhance the overall rigidity. It should be noted that the wall surface of the intermediate housing 20 can adopt a streamlined design to reduce air resistance and improve heat dissipation efficiency.

[0029] The reducer 30 is arranged in parallel with the motor 40. Specifically, the axis of the motor 40 and the axis of the reducer 30 are arranged in parallel. At the same time, the reducer 30 and the motor 40 are respectively located on both sides of the intermediate housing 20. The reducer 30 preferably uses high-precision gears to ensure transmission efficiency and stability. The motor 40 preferably uses a high-efficiency permanent magnet synchronous motor to have the characteristics of high torque density and high efficiency. The intermediate housing 20 covers at least part of the reducer 30 and part of the motor 40, that is, the reducer 30 and the motor 40 share the intermediate housing 20 for shielding and protection, thereby making the arrangement structure of the reducer 30 and the motor 40 more compact, and eliminating the need to set up two separate housings, thereby reducing the use of housing materials to enhance the lightweight effect of the drive assembly.

[0030] The controller 50 is the core regulating component of the drive assembly, which is arranged in a specially designed controller housing 60. The controller housing 60 can be made of metal to have good heat dissipation performance and maintain a good temperature state around the controller 50 during long-term use of the controller 50. It should be noted that the controller housing 60 is specially designed with heat dissipation ribs 610, and the heat dissipation ribs 610 are arranged back to the motor 40. The setting of the heat dissipation ribs 610 not only increases the strength of the housing, but also improves the heat dissipation efficiency; at the same time, the heat dissipation ribs 610 arranged back to the motor 40 are the windward side when the vehicle body moves forward, so as to optimize its heat dissipation effect. At the same time, the design of the heat dissipation ribs 610 can adopt the principles of thermodynamics, and the optimal layout and size can be determined through simulation analysis to achieve the best heat dissipation effect.

[0031] The drive assembly provided by the embodiment of the present invention fixedly connects the center fork 10 and the intermediate housing 20 as the basic load-bearing structure, and at the same time, the reducer 30 and the motor 40 are respectively arranged on both sides of the intermediate housing 20 and arranged in parallel, so that a single intermediate housing 20 can simultaneously shield and protect parts of the reducer 30 and the motor 40. At the same time, the controller housing 60 for setting the controller 50 is also fixedly set on the center fork 10. The various components are compactly arranged on the integrated structure of the center fork 10 and the intermediate housing 20, so that the drive assembly has a good integrated setting effect; and the shared housing setting of the reducer 30 and the motor 40 can reduce the material consumption of the drive assembly and improve the lightweight design goal. In addition, the controller housing 60 is provided with heat dissipation ribs 610 to accelerate heat dissipation, and the side of the controller housing 60 where the heat dissipation ribs 610 are set is facing away from the motor 40, so as to be arranged towards the windward side of the vehicle body during operation, thereby achieving the optimal heat dissipation effect and improving the operating stability of the controller 50.

[0032] Furthermore, in some embodiments of the present invention, a gap is designed between the center fork 10 and the intermediate housing 20 to form a receiving chamber 210. The two sides of the receiving chamber 210 are connected to the controller 50 and the motor 40 to provide a routing path for the control wiring harness. The control wiring harness is embedded and installed in the receiving chamber 210 to be well protected by the receiving chamber 210. It should be noted that due to the high integration of the above-mentioned structure, the distance between the motor 40 and the controller 50 is shorter, so the use length of the control wiring harness is shorter, which can save materials and be well protected by the receiving chamber 210. In addition, the control wiring harness is preferably made of highly flexible materials to adapt to the dynamic changes of the drive assembly during operation and reduce failures caused by wiring harness pulling.

[0033] Based on the above embodiment, the control wiring harness includes at least a high-voltage three-phase motor line 710 and a low-voltage motor signal line 720. The high-voltage three-phase line is responsible for transmitting electrical energy to the motor 40, driving it; the low-voltage signal line is responsible for transmitting control signals, ensuring that the motor 40 operates according to the predetermined program. The wiring harness is embedded within the accommodating cavity 210, effectively preventing damage to the wiring harness from the external environment and improving system reliability. Furthermore, the wiring harness layout and fixing method are designed to reduce the impact of electromagnetic interference and vibration on signal transmission.

[0034] It should be noted that the design of the accommodating chamber 210 also takes into account the needs of heat dissipation and ventilation. By designing specific ventilation holes and guide grooves on the intermediate shell 20, effective heat exchange is achieved, and the heat dissipation performance of the control harness and the controller 50 is further improved. These design structures can not only improve the working efficiency of the drive assembly, but also extend its service life. In order to further improve the functionality and reliability of the accommodating chamber 210, this embodiment also optimizes the sealing and protection level of the accommodating chamber 210. By adopting high-performance sealing materials and structural design, it is ensured that the accommodating chamber 210 can maintain good sealing performance in various harsh environments, prevent the intrusion of moisture and dust, and thus protect internal components from damage.

[0035] Furthermore, in some embodiments of the present invention, the motor 40 is a permanent magnet synchronous motor, and is connected to the reducer 30 via a chain or belt drive. The permanent magnet synchronous motor has high efficiency, high power density and good control performance. It provides a flexible connection method with the chain or belt drive method, which can be adjusted according to actual application requirements, and provides a more free installation position for the motor 40 and the reducer 30. At the same time, it can also meet different torque and speed requirements by adjusting the chain or belt. It should be noted that the tension of the transmission chain or belt is precisely adjusted to reduce vibration and noise during the transmission process. In addition, the material of the transmission chain or belt is selected to be wear-resistant and anti-aging to increase its service life.

[0036] As for the position setting of the motor 40 and the reducer 30, in some embodiments of the present invention, the reducer 30 and the motor 40 are fitted together at one end in the axial direction of the two, so that the axes of the reducer 30 and the motor 40 are parallel and tightly matched, thereby reducing the space occupied and improving the compactness of the overall structure. At the same time, the axial fit also helps to reduce vibration and noise during the transmission process and improve transmission efficiency. The intermediate housing 20 can also reduce the setting range and reduce its space occupancy and material consumption, reducing the weight of the drive assembly and meeting the lightweight requirements. Through the axial fit design of the reducer 30 and the motor 40, this embodiment optimizes the transmission efficiency, reduces vibration and noise, and improves the performance and service life of the drive assembly. In actual application, the above design structure can effectively improve the power transmission efficiency and driving stability of the vehicle, while reducing maintenance costs and noise levels. In addition, the axial fit design also provides more space for the compact design of electric vehicles.

[0037] In order to further optimize the above technical solution, it is preferred that the axes of the controller housing 60 and the motor 40 also adopt a parallel structural form, and are combined with the reducer 30 and the motor 40 to form an L-configuration. This L-configuration design not only improves space utilization, but also enhances the stability of the overall structure. The heat dissipation ribs 610 of the controller housing 60 are combined with the heat dissipation requirements of the motor 40 to form an effective heat dissipation system, ensuring the stable operation of the controller 50 and the motor 40 under high-load working conditions. It should be noted that the L-configuration design enables the drive assembly to be extended in two directions so as to be arranged in a compact space, thereby improving the adaptability and maintainability of the drive assembly and making the drive assembly more flexible and efficient.

[0038] Furthermore, in some embodiments of the present invention, the intermediate housing 20 is arranged to extend along a single side of the center fork 10 to form a side fork structure in combination with the center fork 10. The structural form of the side fork not only enhances the overall support capacity, but also provides additional installation space, facilitating the installation and maintenance of other components. The design of the side fork structure improves the support capacity and installation flexibility of the drive assembly, making the overall structure more stable and easier to maintain, improving the load-bearing capacity and space utilization of the electric vehicle, while reducing maintenance costs and failure rates. In addition, the design of the side fork structure also provides more flexibility and possibilities for the diversified design of the vehicle.

[0039] Furthermore, in some embodiments of the present invention, the heat dissipation ribs 610 provided on the controller housing 60 are respectively provided on a plurality of heat dissipation windows uniformly provided on the controller housing 60. The coordinated design of the heat dissipation ribs 610 and the heat dissipation windows forms an effective heat dissipation channel, thereby improving heat dissipation efficiency. Adjacent heat dissipation ribs 610 are spaced apart to form heat dissipation gaps for airflow. The airflow can pass through the heat dissipation gaps and have a larger contact area with the heat dissipation ribs 610, thereby further optimizing heat dissipation performance. Through the coordinated design of the heat dissipation ribs 610 and the heat dissipation windows, this embodiment achieves a highly efficient heat dissipation effect, ensuring stable operation of the controller 50 in high-temperature environments.

[0040] Furthermore, to prevent the vibration and noise generated by the reducer 30 during operation from affecting the comfort of the entire vehicle, in some embodiments of the present invention, the reducer 30 is fixedly connected to the surrounding vehicle body structure via a shock-absorbing bracket 80. The shock-absorbing bracket 80 can effectively absorb and isolate the vibration from the reducer 30, reducing the impact on the vehicle body structure and improving the comfort and stability of the entire vehicle.

[0041] In order to ensure a stable installation of the drive assembly, the drive assembly provided in the embodiment of the present invention also includes connecting brackets 90. Two connecting brackets 90 are symmetrically arranged on the outer walls of the controller housing 60 on both sides, which not only strengthen the structural strength of the controller housing 60, but also provide additional mounting points to facilitate the installation and fixation of other components. In the design of the connecting brackets 90, high-strength materials and advanced processing technology are used to ensure the strength and stability of the connecting brackets 90. The connecting brackets 90 adopt an open structure extending outward so as not to block the windward surface of the controller housing 60, thereby ensuring the heat dissipation effect of the controller housing 60. At the same time, it also avoids interference with other structural components in the drive assembly to facilitate quick installation and maintenance.

[0042] In the specification and claims of this utility model, as well as in the accompanying drawings, the terms "first," "second," "left," and "right," etc., are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements and may include steps or elements that are not listed.

[0043] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drive assembly, characterized in that: include: A center fork and an intermediate housing fixedly connected to the center fork; A reducer and a motor, wherein the reducer is arranged parallel to the axis of the motor and is respectively arranged on both sides of the intermediate housing, and the intermediate housing at least covers a portion of the reducer and the motor; The controller is arranged inside the controller housing, the controller housing is fixedly arranged on the middle flat fork, and the controller housing is provided with heat dissipation ribs arranged back to the motor.

2. The drive assembly according to claim 1, wherein: The middle flat fork and the intermediate housing are spaced apart to form a receiving cavity, the receiving cavity is connected to the controller and the motor, and a control harness is embedded in the receiving cavity.

3. The drive assembly according to claim 2, wherein: The control wiring harness includes at least a motor high-voltage three-phase line and a motor low-voltage signal line.

4. The drive assembly according to claim 1, wherein: The motor is a permanent magnet synchronous motor and is connected to the reducer through a chain or belt transmission.

5. The drive assembly according to claim 1, wherein: The reducer is parallel to the motor and one end thereof is in contact with the motor in the axial direction.

6. The drive assembly according to claim 5, wherein: The controller housing is arranged parallel to the axis of the motor and is combined with the reducer and the motor to form an L-configuration.

7. The drive assembly according to claim 1, wherein: The intermediate housing is extended along a single side of the middle fork and is combined with the middle fork to form a side fork structure.

8. The drive assembly according to claim 1, wherein: The heat dissipation ribs are arranged on a plurality of heat dissipation windows evenly opened on the controller housing, and adjacent heat dissipation ribs are arranged at intervals to form heat dissipation gaps for air flow to pass through.

9. The drive assembly according to claim 1, wherein: The reducer is fixedly connected to the surrounding vehicle body structure through a shock-absorbing bracket.

10. The drive assembly according to claim 1, wherein: It also includes a connecting bracket, and two connecting brackets are symmetrically arranged on the outer walls of both sides of the controller housing.

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