Middle motor controller structure of power-assisted bicycle

Abstract

The utility model discloses a centrally-mounted motor controller structure of a power-assisted bicycle, and belongs to the field of centrally-mounted motors of power-assisted bicycles. The centrally-mounted motor controller structure comprises a first control circuit board, a second control circuit board and a supporting column, the first control circuit board is fixedly installed in a shell of a centrally-mounted motor, and the second control circuit board is installed on one side of the first control circuit board in parallel or approximately parallel through the supporting column. The first control circuit board and the second control circuit board are vertically opposite and have a gap. The control circuit board is divided into an upper part and a lower part, and the three-dimensional space arrangement of the control circuit board is utilized, so that the functionality of the control circuit board is ensured, and the structural compactness of the middle motor is also ensured; the control circuit board is installed through the supporting columns, the structure is simple, and manufacturing and assembling are easy and convenient. And a gap is reserved between the upper control circuit board and the lower control circuit board, so that mutual interference among electronic components can be prevented, heat dissipation is facilitated, and the working stability of the electronic components is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a power-assisted bicycle middle motor, more specifically, to a power-assisted bicycle middle motor controller structure. BACKGROUND

[0002] Power-assisted bicycle is a new type of vehicle that uses electric motor to assist cycling. When cycling on flat ground, the output power of the motor is very small, making the rider feel easy and energy-saving. However, when climbing uphill, the motor can output larger torque, making climbing very labor-saving. In recent years, it has been loved by many consumers.

[0003] The middle motor is the core driving component of the power-assisted bicycle. It uses a torque sensor to monitor the torque on the bicycle spindle and feeds back the monitored torque signal to the controller module. After processing by the controller module, the output power of the motor is adjusted to achieve the purpose of adjusting the output power according to the torque on the bicycle spindle. With the development of technology, the middle motor is also developing towards compactness, high power and high integration. The resulting problem is the lack of internal installation space of the middle motor. On the one hand, the structure of the existing bicycle five-way pipe restricts the size of the middle motor. In order to meet the installation requirements, the structure of the middle motor must be as compact as possible. On the other hand, while pursuing high output power, the size of the transmission structure inside the middle motor is also getting larger, further compressing the internal installation space of the middle motor. At the same time, with the increasing stability of torque sensor, speed sensor and other detection signal processing, the control circuit becomes more complex, and the size of the control module becomes larger. These aspects increase the difficulty of compact design of the middle motor, especially the controller structure of the middle motor. There is not enough space inside the middle motor to install a larger controller. Therefore, it is necessary to design a new controller structure for the middle motor to meet the needs of installing a larger control circuit board in a compact middle motor. SUMMARY

[0004] 1. Technical problem to be solved by the utility model

[0005] The utility model aims to overcome the above-mentioned shortcomings of the existing middle motor and provide a power-assisted bicycle middle motor controller structure to solve the problem of limited installation space of the control circuit board in the middle motor. The technical scheme of the utility model divides the control circuit board into two parts installed above and below. The upper and lower control circuit boards are installed together in parallel or approximately parallel through support columns. The three-dimensional space arrangement of the control circuit board not only ensures the functionality of the control circuit board but also ensures the compactness of the structure of the middle motor. In addition, the support columns are used to install and fix the control circuit board in a high position. The structure is simple, and the manufacturing and assembly are simple and convenient.

[0006] 2. Technical scheme

[0007] To achieve the above object, the utility model provides a technical scheme for:

[0008] The utility model discloses a power -assisted bicycle middle -position motor controller structure, including first control circuit board, second control circuit board and support column, first control circuit board fixed mounting in the shell of middle -position motor, second control circuit board installs in the one side of first control circuit board through support column parallel or substantially parallel, first control circuit board and second control circuit board are opposite and have the gap.

[0009] Further, the first control circuit board is fixed on the inner side of the shell through a plurality of support columns, and the second control circuit board is fixed on the upper end of the support column through a fixing screw.

[0010] Further, the shell has a circuit board mounting cavity, a plurality of threaded mounting holes are arranged in the circuit board mounting cavity, a first mounting hole is arranged on the first control circuit board, a stud is arranged on one end of the support column, the stud is screwed into the corresponding threaded mounting hole through the first mounting hole, and the first control circuit board and the shell are fixed.

[0011] Further, the end of the support column away from the stud is also provided with a screw groove.

[0012] Further, a reinforcing screw is arranged between the first control circuit board and the shell.

[0013] Further, the first control circuit board and the second control circuit board are both crescent-shaped.

[0014] Further, the shell is a transmission case cover of the middle -position motor, and a transmission mounting portion is arranged on one side of the first control circuit board, a protruding portion extending into the transmission mounting portion is further arranged on the first control circuit board, a magnetic encoder is arranged on the protruding portion, and a notched portion corresponding to the position of the protruding portion is arranged on the second control circuit board.

[0015] 3. Advantageous effects

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The utility model discloses a kind of power-assisted bicycle middle-placed motor controller structures, it includes first control circuit board, second control circuit board and support column, first control circuit board is fixedly installed in the shell of middle-placed motor, second control circuit board is installed in the side of first control circuit board by support column parallelly or substantially parallelly, first control circuit board and second control circuit board are opposite and have gap, control circuit board is divided into two parts of installation, and control circuit board is installed together by support column parallelly or substantially parallelly, using the three-dimensional space arrangement of control circuit board, both the functionality of control circuit board is guaranteed, and the compactness of middle-placed motor structure is guaranteed;And, using support column to install and fix control circuit board, structure is simple, and manufacture and assembly are simple and convenient;Gap is left between upper and lower control circuit boards, can prevent mutual interference between electronic components, and facilitate heat dissipation, ensure the working stability of electronic components;

[0018] (2) The utility model discloses a kind of power-assisted bicycle middle-placed motor controller structures, and first control circuit board is fixed in the inner side of shell by several support columns, second control circuit board is fixed in the upper end of support column by fixed screw, support column can be used as locking piece, and also can be used as upper and lower connecting piece, structure is simple, and assembly is convenient;

[0019] (3) The utility model discloses a kind of power-assisted bicycle middle-placed motor controller structures, and shell has circuit board installation cavity, and circuit board installation cavity is equipped with several threaded mounting holes, first control circuit board is equipped with first mounting hole, one end of support column is equipped with stud, stud is screwed in corresponding threaded mounting hole by the first mounting hole, realize the fixation of first control circuit board and shell;The upper end of support column is equipped with screw connection hole, and second control circuit board is equipped with second mounting hole, and fixed screw is screwed in corresponding screw connection hole by the second mounting hole, realize the fixation of second control circuit board and support column;Using the above structure, assembly is simple and convenient, and control circuit board is installed firmly and reliably;

[0020] (4) The utility model discloses a kind of power-assisted bicycle middle-placed motor controller structures, and the end of support column away from stud is also equipped with screw groove, can facilitate the tightening operation of support column, further facilitate the fixation of support column to first control circuit board;

[0021] (5) The utility model discloses a kind of power-assisted bicycle middle-placed motor controller structures, and first control circuit board and shell are also equipped with reinforcing screw, can further fix first control circuit board, ensure installation firmly and reliably;

[0022] (6) The utility model discloses a kind of power-assisted bicycle middle-placed motor controller structures, and first control circuit board and second control circuit board are both crescent, structure is more compact, facilitate installation in middle-placed motor;

[0023] (7)The utility model discloses a power-assisted bicycle middle -position motor controller structure, its shell is the transmission case cover of middle -position motor, still be equipped with the transmission installation department of being located first control circuit board one side on the shell, still be equipped with the convex part of extending to the transmission installation department on first control circuit board, be equipped with magnetic encoder on the convex part, the second control circuit board is located the slot department of corresponding with the position of convex part, utilize above -mentioned structural design, the setting of magnetic encoder is convenient, and effectively avoids the transmission part in transmission case. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the whole assembly structure schematic drawing of the utility model of a power-assisted bicycle middle -position motor controller structure;

[0025] Figure 2 It is the split structure schematic drawing of the utility model of a power-assisted bicycle middle -position motor controller structure;

[0026] Figure 3 It is the structure schematic drawing of the utility model of a power-assisted bicycle middle -position motor controller structure middle support column;

[0027] Figure 4 It is the overhead structure schematic drawing of the utility model of a power-assisted bicycle middle -position motor controller structure;

[0028] Figure 5 It is Figure 4 The sectional structure schematic drawing of middle A-A direction.

[0029] The label explanation in schematic diagram:

[0030] 1, shell, 1-1, transmission installation department, 1-2, circuit board installation cavity, 1-3, threaded mounting hole, 2, first control circuit board, 2-1, convex part, 2-2, first mounting hole, 3, second control circuit board, 3-1, slot department, 3-2, second mounting hole, 4, support column, 4-1, stud, 4-2, screw connection hole, 4-3, screw groove, 5, fixed screw, 6, reinforcing screw. DETAILED DESCRIPTION

[0031] For further understanding the contents of the utility model, combining with the utility model is described in detail with examples and drawings.

[0032] [EXAMPLE]

[0033] Combine Figure 1 And Figure 2As shown in the figure, a mid-drive motor controller structure for an electric bicycle according to this embodiment includes a first control circuit board 2, a second control circuit board 3, and a support column 4. The first control circuit board 2 is fixedly installed inside the housing 1 of the mid-drive motor. The second control circuit board 3 is installed parallel or substantially parallel to one side of the first control circuit board 2 via the support column 4. The first control circuit board 2 and the second control circuit board 3 are vertically opposite each other and have a gap. This mid-drive motor controller structure for an electric bicycle divides the control circuit board from a single planar circuit board into two parts, which are installed vertically. The upper and lower control circuit boards are installed together parallel or substantially parallel via the support column 4. By utilizing the three-dimensional spatial arrangement of the control circuit board, both the functionality of the control circuit board and the structural compactness of the mid-drive motor are ensured. Furthermore, the support column 4 is used to elevate and fix the control circuit board, resulting in a simple structure that is easy to manufacture and assemble. The gap between the upper and lower control circuit boards prevents mutual interference between electronic components and facilitates heat dissipation, ensuring the operational stability of the electronic components.

[0034] In this embodiment, the first control circuit board 2 is fixed to the inner side of the outer casing 1 by several support columns 4, and the second control circuit board 3 is fixed to the upper end of the support columns 4 by fixing screws 5. The support columns 4 can serve as both locking components and upper and lower connecting components, resulting in a simple structure and convenient assembly. See details... Figures 2 to 5 As shown, the outer casing 1 has a circuit board mounting cavity 1-2, and the circuit board mounting cavity 1-2 is provided with several threaded mounting holes 1-3. The first control circuit board 2 is provided with a first mounting hole 2-2. One end of the support column 4 is provided with a stud 4-1. The stud 4-1 passes through the first mounting hole 2-2 and is screwed into the corresponding threaded mounting hole 1-3 to fix the first control circuit board 2 to the outer casing 1. The upper end of the support column 4 is provided with a screw connection hole 4-2. The second control circuit board 3 is provided with a second mounting hole 3-2. The fixing screw 5 passes through the second mounting hole 3-2 and is screwed into the corresponding screw connection hole 4-2 to fix the second control circuit board 3 to the support column 4. With the above structure, assembly is simple and convenient, and the control circuit board is installed firmly and reliably. Figure 3 As shown, in order to facilitate the locking of the support column 4, a screw groove 4-3 is provided at the end of the support column 4 away from the stud 4-1. The screw groove 4-3 can be a "I" groove or a "+" groove, etc., which can facilitate the locking of the support column 4 with tools such as screwdrivers, and further facilitate the fixing of the support column 4 to the first control circuit board 2.

[0035] Reference Figure 1 and Figure 2As shown in the first control circuit board 2 and the shell 1 is also provided with reinforcing screw 6, reinforcing screw 6 can be further fixed to the first control circuit board 2, ensure installation firm and reliable. Specifically in this embodiment, the support column 4 is provided with three, and distributed in the first control circuit board 2 and the second control circuit board 3 outer periphery.

[0036] As shown in Figure 1 , Figure 2 and Figure 4 in this embodiment, the first control circuit board 2 and the second control circuit board 3 are both crescent, structure is more compact, facilitate in the installation of the middle motor. Specifically, the above shell 1 is the transmission case cover of the middle motor, the transmission installation part 1-1 is arranged on the shell 1, the transmission installation part 1-1 is used for installing transmission gear, the first control circuit board 2 is provided with the protruding part 2-1 extending into the transmission installation part 1-1, the protruding part 2-1 is provided with a magnetic encoder, the second control circuit board 3 is provided with the slot part 3-1 corresponding to the position of the protruding part 2-1, the slot part 3-1 is used for avoiding the output shaft gear of the motor. By using the above structure design, the setting of the magnetic encoder is facilitated, and the transmission parts in the transmission case are effectively avoided.

[0037] The installation structure of the first control circuit board 2 and the second control circuit board 3 on the shell 1 is as shown in Figure 4 and Figure 5 , the first control circuit board 2 and the second control circuit board 3 are arranged in up-down layout, forming three-dimensional space arrangement, which can reduce the overall size of the circuit board, so that the controller structure of the middle motor is more compact, easy to install in the compact middle motor.

[0038] The utility model discloses a kind of power-assisted bicycle middle motor controller structures, control circuit board is divided into two parts of up-down installation, up-down control circuit board is installed together by support column parallelly or substantially parallelly, using the three-dimensional space arrangement of control circuit board, both ensure the functionality of control circuit board, and ensure the compactness of middle motor structure;And, using support column to install and fix to control circuit board, structure is simple, and manufacture and assembly are simple and convenient;Gap is left between up-down control circuit board, can prevent mutual interference between electronic components, and facilitate heat dissipation, ensure the working stability of electronic components.

[0039] The above describes the utility model and its implementation mode schematically, which is not restrictive, and the embodiment shown in the drawings is only one of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired thereby, without departing from the purpose of the utility model, similar structure and embodiments are designed without creativity, which shall belong to the protection scope of the utility model.

Claims

1. A controller structure for a mid-mounted motor in a power-assisted bicycle, characterized in that: It includes a first control circuit board (2), a second control circuit board (3) and a support column (4). The first control circuit board (2) is fixedly installed inside the housing (1) of the mid-drive motor. The second control circuit board (3) is installed parallel or approximately parallel to one side of the first control circuit board (2) via the support column (4). The first control circuit board (2) and the second control circuit board (3) are vertically opposite each other and have a gap.

2. The structure of the mid-mounted motor controller for a power-assisted bicycle according to claim 1, characterized in that: The first control circuit board (2) is fixed to the inside of the outer casing (1) by several support columns (4), and the second control circuit board (3) is fixed to the upper end of the support columns (4) by fixing screws (5).

3. The structure of the mid-mounted motor controller for a power-assisted bicycle according to claim 2, characterized in that: The outer casing (1) has a circuit board mounting cavity (1-2), and the circuit board mounting cavity (1-2) is provided with a plurality of threaded mounting holes (1-3). The first control circuit board (2) is provided with a first mounting hole (2-2). One end of the support column (4) is provided with a stud (4-1). The stud (4-1) passes through the first mounting hole (2-2) and is screwed into the corresponding threaded mounting hole (1-3) to fix the first control circuit board (2) to the outer casing (1). The upper end of the support column (4) is provided with a screw connection hole (4-2). The second control circuit board (3) is provided with a second mounting hole (3-2). The fixing screw (5) passes through the second mounting hole (3-2) and is screwed into the corresponding screw connection hole (4-2) to fix the second control circuit board (3) to the support column (4).

4. The structure of the mid-mounted motor controller for a power-assisted bicycle according to claim 3, characterized in that: The end of the support column (4) away from the stud (4-1) is also provided with a screw groove (4-3).

5. The structure of the mid-mounted motor controller for a power-assisted bicycle according to claim 3, characterized in that: A reinforcing screw (6) is also provided between the first control circuit board (2) and the outer casing (1).

6. The structure of the mid-mounted motor controller for a power-assisted bicycle according to any one of claims 1 to 5, characterized in that: Both the first control circuit board (2) and the second control circuit board (3) are crescent-shaped.

7. The structure of the mid-mounted motor controller for a power-assisted bicycle according to claim 6, characterized in that: The outer casing (1) is the transmission box cover of the mid-mounted motor. The outer casing (1) is also provided with a transmission mounting part (1-1) located on one side of the first control circuit board (2). The first control circuit board (2) is also provided with a protrusion (2-1) extending into the transmission mounting part (1-1). The protrusion (2-1) is provided with a magnetic encoder. The second control circuit board (3) is provided with a notch (3-1) corresponding to the position of the protrusion (2-1).

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