Centrally-mounted motor controller mounting structure

Abstract

The utility model discloses a centrally-mounted motor controller mounting structure, which comprises a motor shell, a cavity is arranged in the motor shell, a controller is arranged in the cavity, the controller comprises a shell made of heat conduction materials, the side wall of the shell is attached to the inner side wall of the motor shell, and the inner side wall of the shell is attached to the motor shell. The side wall of the shell and the motor shell adjacent to the shell are locked through screws, and the controller is provided with a connector extending to the outside of the shell. The controller is locked on the motor shell through the side face, the area where the fluted disc is located is avoided through the screw locking position, and the screw dismounting convenience is improved; meanwhile, the shell of the controller is in surface contact with the motor shell, so that the heat conduction performance between the controller and the motor shell is improved, and the heat dissipation performance of the controller is improved; the controller is connected with other parts of the middle motor through the connector, wiring and gluing are not needed, and the controller is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the field of mid - drive motors and relates to an installation structure of a mid - drive motor controller. Background Art

[0002] In the current field of electric assist bicycles, the mid - drive motor plays a crucial role as the core driving component. However, there are some problems in the design and assembly of the current mid - drive motor that need to be solved urgently.

[0003] Currently, the controller of the mid - drive motor is built into the motor and locked to the motor housing of the mid - drive motor from the bottom. This position is exactly in the area where the chainring is located, which brings great inconvenience to maintenance work. When the controller needs to be maintained, due to its position in the chainring area, it is very difficult to disassemble and assemble the screws, and it is impossible to quickly take out or install the controller. This not only increases the time and cost of maintenance, but also reduces work efficiency.

[0004] In addition, this assembly method leaves a gap between the side wall of the controller and the motor housing. During the operation of the controller, the heat dissipated will accumulate in the housing and cannot be effectively and quickly discharged. Poor heat dissipation will affect the performance and life of the controller, and may even cause safety problems. The controller in a high - temperature environment for a long time is prone to failure, reducing the reliability of the electric assist bicycle.

[0005] Moreover, for some mid - drive motors, the wiring of the controller needs to be fixed with glue. This results in the need to disassemble the motor housing, the motor, etc. of the mid - drive motor together every time the controller is disassembled, and the operation is very cumbersome. This complex disassembly process not only increases the difficulty of maintenance, but also may cause unnecessary damage to the motor and other components.

[0006] In summary, there are many problems in the current assembly method of the controller of the mid - drive motor in electric assist bicycles, such as inconvenient disassembly and assembly of screws, poor heat dissipation, and cumbersome disassembly. These problems seriously affect the maintenance efficiency and reliability of electric assist bicycles, and there is an urgent need for a new design solution to solve these problems. Content of the Utility Model

[0007] The purpose of the utility model is to provide an installation structure of a mid - drive motor controller, which solves the problems of inconvenient disassembly and assembly of screws, poor heat dissipation, and cumbersome disassembly of the existing controller by changing the controller structure and assembly method.

[0008] The purpose of the utility model is achieved by the following technical solutions:

[0009] A mounting structure for a mid-mounted motor controller, including a motor housing, a chamber is provided inside the motor housing, a controller is arranged in the chamber, the controller includes a housing made of a heat-conducting material, the side wall of the housing is attached to the inner side wall of the motor housing, the side wall of the housing and the adjacent motor housing are locked by screws, and the controller has a connector extending outside the housing.

[0010] As a further improvement of an embodiment of the present invention, wherein, the motor housing has a first screw hole for installing the screw, the housing has a second screw hole corresponding to the first screw hole, and the depth of the second screw hole is less than the thickness of the housing where it is located, so that the screw installed in the second screw hole does not contact the inner cavity of the controller.

[0011] As a further improvement of an embodiment of the present invention, wherein, a waterproof glue is provided at the locking position of the screw to form a waterproof glue layer covering the screw.

[0012] As a further improvement of an embodiment of the present invention, wherein, the side wall of the housing is in surface contact with the motor housing.

[0013] As a further improvement of an embodiment of the present invention, wherein, the side wall of the housing is a vertical plane, and the inner side wall of the motor housing corresponding to the side wall of the housing is a vertical plane.

[0014] As a further improvement of an embodiment of the present invention, wherein, the upper end of the chamber is open, a sealing plate is provided at the opening, and the sealing plate is locked on the motor housing by screws and seals the controller in the motor housing.

[0015] As a further improvement of an embodiment of the present invention, wherein, a boss extending into the chamber is provided inside the motor housing, and the bottom of the controller is placed on the upper end surface of the boss.

[0016] As a further improvement of an embodiment of the present invention, wherein, the housing is a housing made of aluminum alloy material, and the motor housing is a housing made of aluminum alloy material.

[0017] Adopting the above technical solutions, the following beneficial effects are obtained: The controller is locked on the motor housing from the side, and the locking position of the screw avoids the area where the gear disc is located, improving the convenience of disassembly and assembly of the screw; at the same time, the housing of the controller is in surface contact with the motor housing, improving the heat conduction performance between the two and enhancing the heat dissipation of the controller; the controller is connected to other components of the mid-mounted motor by connectors, without wiring and gluing, and the controller is convenient to disassemble and assemble. Description of the Drawings

[0018] To more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are merely exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained by extending the provided drawings.

[0019] The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0020] Figure 1 It is a schematic diagram of the mid-mounted motor structure provided by the present utility model.

[0021] Figure 2 It is a schematic diagram of the mid-mounted motor structure provided by the present utility model (with the cover plate hidden).

[0022] Figure 3 It is a schematic diagram of the controller structure provided by the present utility model.

[0023] Figure 4 It is a schematic diagram of the motor housing structure provided by the present utility model.

[0024] In the figure:

[0025] 1 - Motor housing; 11 - Chamber; 111 - Inner side wall; 12 - First screw hole; 13 - Boss;

[0026] 2 - Controller; 21 - Outer shell; 211 - Side wall; 22 - Connector; 23 - Second screw hole;

[0027] 3 - Screw;

[0028] 4 - Cover plate. Detailed implementation manners

[0029] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with the embodiments to detail the present utility model.

[0030] It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0031] In the present utility model, unless otherwise specified, the orientation terms such as "upper, lower, top, bottom" generally refer to the directions shown in the drawings or to the vertical, perpendicular or gravitational directions of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contours of the respective components themselves, but the above orientation terms do not limit the present utility model. Embodiment

[0032] Refer to Figures 1 - 4 As shown, a mounting structure of a mid-mounted motor controller includes a motor housing 1. A chamber 11 is provided inside the motor housing 1, providing an installation space for the controller 2. The controller 2 disposed in the chamber 11 has a housing 21 made of a heat-conducting material. The side wall 211 of the housing is attached to the inner side wall 111 of the motor housing 1, greatly improving the heat conduction efficiency. When the controller 2 generates heat during operation, the housing made of the heat-conducting material can quickly transfer the heat to the motor housing 1, and dissipate the heat by means of the relatively large surface area of the motor housing, effectively avoiding heat accumulation and extending the service life of the controller.

[0033] The side wall 211 of the housing and the adjacent motor housing 1 are locked by screws 3. This connection method is firm and reliable, ensuring that the controller will not loosen or displace during the operation of the motor. At the same time, the installation position of the screws avoids the area where the toothed disc is located, facilitating disassembly when maintenance or replacement of the controller is required.

[0034] The controller 2 is provided with a connector 22 extending outside the housing 21, facilitating connection with an external circuit. The design of the connector 22 makes the connection between the controller and other components more convenient, without the need for complex wiring operations. During installation and maintenance, the circuit can be connected and disconnected simply by plugging and unplugging the connector, greatly improving the work efficiency.

[0035] Specifically, in this mounting structure of the mid-mounted motor controller, the motor housing 1 is provided with first screw holes 12 for installing the screws 3. Correspondingly, the housing 21 is provided with second screw holes 23, and the second screw holes 23 are accurately aligned with the first screw holes 12 on the motor housing 1. It should be noted that the depth of the second screw holes 23 is less than the thickness of the housing where they are located. Through this ingenious design, when the screws 3 are installed in the second screw holes 23, it can be ensured that the screws 3 do not contact the inner cavity of the controller 2. In this way, not only the firm connection between the controller housing and the motor housing is ensured, but also the damage to the internal circuit of the controller that may be caused by the screws contacting the inner cavity of the controller or the entry of external foreign objects into the inner cavity of the controller along the screws is avoided, greatly improving the safety and reliability of the mounting structure and providing a strong guarantee for the stable operation and convenient maintenance of the mid-mounted motor controller.

[0036] Preferably, in this mid-mounted motor controller installation structure, waterproof glue is provided at the locking position of the screw 3. The waterproof glue forms a waterproof caulking layer covering the screw here. When the electric assist bicycle is used in different environments, especially in the case of rain or humidity, the waterproof caulking layer can protect the screw 3 from rusting and prevent the motor housing and the controller housing from rusting at this position.

[0037] In this embodiment, the side wall of the outer shell 21 of the mid-mounted motor controller installation structure is in surface contact with the motor housing 1. This surface contact method can increase the contact area, improve the heat conduction efficiency, and enable the heat generated during the operation of the controller to be more effectively transferred to the motor housing, thereby enhancing the heat dissipation effect.

[0038] Specifically, in this mid-mounted motor controller installation structure, the side wall 211 of the outer shell is a vertical plane. The corresponding inner side wall 111 of the motor housing is also a vertical plane. The vertical side walls make the fit between the outer shell and the motor housing closer, ensuring the stability and reliability of the surface contact. At the same time, the design of the vertical plane is also convenient for processing and installation, improving the production efficiency. This specific vertical plane design provides strong structural support for the stable operation and good heat dissipation of the mid-mounted motor controller.

[0039] In this embodiment, the outer shell 21 is made of aluminum alloy, which has the advantages of light weight, good thermal conductivity, and strong corrosion resistance. The motor housing 1 is also made of aluminum alloy. This material selection makes the entire mid-mounted motor controller installation structure lighter, more efficient in heat dissipation, and also improves the durability and reliability of the structure.

[0040] In this embodiment, the motor housing 1 has a boss 13 extending into the chamber 11. The bottom of the controller 2 is placed on the upper end surface of the boss 13. Such a design provides stable support for the controller, ensuring that it does not shake during the operation of the motor and guaranteeing the normal operation of the mid-mounted motor.

[0041] In this mid-mounted motor controller installation structure, the upper end of the chamber 11 is open, and a sealing plate 4 is provided at this opening. The sealing plate 4 is locked to the motor housing 1 by screws, thereby blocking the controller 2 inside the motor housing. Such a design is convenient for the installation and maintenance of the controller on the one hand. During installation, the controller can be placed through the opening, and during maintenance, the sealing plate can be opened for operation. On the other hand, the sealing plate can effectively protect the controller from external factors such as dust and moisture, ensuring that the controller operates in a stable and safe environment, and improving the reliability and service life of the mid-mounted motor controller.

[0042] The installation structure of the mid-mounted motor controller of the present utility model has many remarkable advantages. First, the screw locking position avoids the area where the toothed disc is located. This improvement greatly enhances the convenience of screw disassembly and assembly. When maintenance is required, the difficulty of screw disassembly and assembly caused by being in the toothed disc area is no longer a problem. The controller can be quickly taken out or installed, saving maintenance time and cost and improving work efficiency. Second, the controller housing and the motor housing are in contact with each other through a mating surface. This design can make full use of the advantage of a large contact area and effectively improve the heat dissipation effect. When the heat generated during the operation of the controller is quickly transferred to the motor housing, heat dissipation is carried out by means of the relatively large surface area of the motor housing, avoiding heat accumulation and extending the service life of the controller. Third, the screw locking method is not only firm and reliable, ensuring that the controller will not loosen or displace during the operation of the motor, but also convenient for disassembly, providing convenience for the maintenance and replacement of the controller. Finally, the design of the connector eliminates the need for wire routing and gluing, greatly facilitating circuit connection. During the installation and maintenance process, the circuit can be connected and disconnected simply by plugging and unplugging the connector, greatly improving work efficiency. In short, this installation structure provides an efficient and reliable installation solution for the mid-mounted motor controller of an electric assist bicycle, playing a positive role in improving the performance and reliability of the electric assist bicycle.

[0043] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0046] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An installation structure of a mid-mounted motor controller, including a motor housing, a chamber is provided inside the motor housing, and a controller is arranged inside the chamber, characterized in that: The controller includes a housing made of heat-conductive material. The side wall of the housing is fitted with the inner side wall of the motor housing, and the side wall of the housing and the adjacent motor housing are locked by screws. The controller has a connector extending outside the housing.

2. The installation structure of the mid-mounted motor controller according to claim 1, wherein: The motor housing has first screw holes for installing the screws, and the housing has second screw holes corresponding to the first screw holes. The depth of the second screw holes is less than the thickness of the housing where they are located, so that the screws installed in the second screw holes do not contact the inner cavity of the controller.

3. The installation structure of the mid-mounted motor controller according to claim 2, characterized in that: A waterproof glue is provided at the locking position of the screws to form a waterproof glue layer covering the screws.

4. The installation structure of the mid-mounted motor controller according to claim 1, characterized in that: A surface contact is adopted between the side wall of the housing and the motor housing.

5. The installation structure of the mid-mounted motor controller according to claim 4, characterized in that: The side wall of the housing is a vertical plane, and the inner side wall of the motor housing corresponding to the side wall of the housing is a vertical plane.

6. The installation structure of the mid-mounted motor controller according to claim 1, wherein: The upper end of the chamber is open, and a sealing plate is provided at the opening. The sealing plate is locked to the motor housing by screws and seals the controller in the motor housing.

7. The installation structure of the mid-mounted motor controller according to claim 5, characterized in that: There is a boss extending into the chamber in the motor housing, and the bottom of the controller is placed on the upper end surface of the boss.

8. The installation structure of the mid-mounted motor controller according to claim 1, characterized in that: The housing is a housing made of aluminum alloy material, and the motor housing is a housing made of aluminum alloy material.

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