Integrated small stepping motor controlled by LIN bus

Abstract

The utility model provides an integrated small stepping motor controlled by an LIN bus, which comprises a motor shell, a stator, a rotor and a coil of the motor are all arranged in the shell, a control circuit board is integrally arranged on the motor shell, the control circuit board is in signal connection with components in the motor shell, and a wire protection box is arranged on the outer side of the control circuit board. The stepping motor control panel supporting LIN bus control is further arranged in the stepping motor in structure besides conventional structures such as a stator, a rotor and a coil of the stepping motor, the control panel is integrated on the motor, the product structure is more miniaturized, the size is reduced, meanwhile, disassembly and assembly are convenient, the assembly time is shortened, LIN bus control can be used, fault diagnosis such as short circuit and open circuit can be supported, and the production efficiency is improved. And step number statistics is supported, the rotation stroke of the motor is recorded, stalling of the motor can be identified, application scene selection of the small motor is increased, meanwhile, maintenance is convenient, the whole motor does not need to be disassembled for maintenance once a problem occurs, and the maintenance cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an integrated small stepper motor controlled by a LIN bus. Background Technology

[0002] Currently, using small motors as power sources is a common practice in product manufacturing. However, these small motors can only be controlled via pulse signals, requiring a separate control system. Both systems need to be installed separately, taking up considerable space and making installation more cumbersome. Furthermore, pulse signal control lacks functions such as fault diagnosis, step counting, and stall status recognition, resulting in weak motor control and failing to meet current control requirements. Currently, when integrating motor controllers, they are typically installed directly inside the motor, making assembly and disassembly difficult. Repairing them is extremely troublesome in case of problems. For example, published patent 2018111179422 discloses an integrated motor where the servo control board is integrated into the space enclosed by the motor housing and a cover-shaped heat sink. While this achieves motor integration and reduces the size of the small motor, the direct mounting of the heat sink on the motor makes disassembly and assembly inconvenient, and hinders quick maintenance of the control board, making it unsuitable for current applications. Therefore, solving the problems of inconvenient assembly and difficulty in replacing and repairing the control board in current integrated motor control systems is crucial. Utility Model Content

[0003] The purpose of this invention is to provide an integrated small stepper motor controlled by a LIN bus. By integrating the control circuit board onto the motor and protecting the control circuit board with a detachable cable tray, the safety of the control circuit board is improved. At the same time, the cable tray can be opened when needed for timely maintenance of the control circuit board. This solves the problems of inconvenient assembly and difficulty in replacing and maintaining the control board in current integrated motor control systems.

[0004] This utility model provides an integrated small stepper motor controlled by a LIN bus, including a motor housing, in which the stator, rotor and coil of the motor are all disposed. A control circuit board is integrated on the motor housing, and the control circuit board is connected to the components inside the motor housing for signal communication. A cable protection box is disposed on the outside of the control circuit board.

[0005] Further improvements are made in that: the control circuit board receives control signals from the LIN bus, performs internal logic processing to convert them into pulse signals that the stepper motor can recognize, and detects the motor's stall status, fault conditions, and accumulated operating angles.

[0006] A further improvement is that: the cable protection box is provided with buckles on both sides, and the motor housing is provided with a slot, the buckles and the slot cooperate to install the cable protection box on the motor housing.

[0007] A further improvement is that a maintenance window is provided at the top of the cable protection box.

[0008] A further improvement is that mounting holes are provided on both sides of the motor housing, through which the motor housing is fixedly installed.

[0009] A further improvement is that an indicator light is provided on the cable protection box to indicate the working status of the circuit on the control circuit board.

[0010] The beneficial effects of this utility model are as follows: In addition to the conventional stator, rotor, and coil structure of a stepper motor, it also includes a stepper motor control board that supports LIN bus control. By integrating the control board onto the motor, the product structure is more compact, reducing its size and facilitating disassembly and assembly, thus shortening assembly time. It can be controlled via LIN bus, supports fault diagnosis such as short circuit and open circuit, supports step count statistics, records motor rotation stroke, and can identify motor stall. This increases the application scenarios for small motors and facilitates maintenance, as it eliminates the need to disassemble the entire motor for repairs in case of problems, saving maintenance costs. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the present invention.

[0012] Figure 2 This is an exploded view of the control circuit board installation of this utility model.

[0013] Figure 3 This is a front view of the structure of this utility model.

[0014] Figure 4 This is a side view of the present invention.

[0015] Figure 5 This is a schematic diagram of the opening of the cable protection box of this utility model.

[0016] The components are: 1-motor housing, 2-control circuit board, 3-line protection box, 4-buckle, 5-slot, 6-maintenance window, 8-mounting hole, 9-indicator light. Detailed Implementation

[0017] To enhance understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of this utility model.

[0018] like Figure 1-5As shown, this embodiment provides an integrated small stepper motor controlled by a LIN bus. The motor housing 1 is fixedly installed through the mounting hole 8, and the control circuit board 2 is integrated on the upper end of the motor housing. At the same time, the control signal is sent through the LIN bus, and the control circuit board 2 performs logic processing on the control signal and converts it into a pulse signal that the stepper motor can recognize to control the motor. Meanwhile, the circuit carried by the control circuit board 2 detects and judges the motor's stall state, fault conditions, and cumulative operating angle, thereby improving the performance requirements of the motor.

[0019] The cable protection box 3 has buckles 4 on both sides, and the motor housing 1 has a slot 5. The buckles 4 and the slot 5 cooperate to install the cable protection box 3 on the motor housing 1, thereby protecting the control circuit board 2.

[0020] The upper end of the cable protection box 3 is provided with a maintenance window 6. At the same time, the indicator light 9 on the cable protection box 3 indicates the stall status and fault condition of the motor detected by the control circuit board 2, so as to facilitate maintenance personnel to repair or replace it in a timely manner.

Claims

1. A LIN bus-controlled integrated miniature stepper motor, comprising a motor housing (1), wherein the stator, rotor, and coils of the motor are all disposed within the housing (1), characterized in that: The motor housing (1) is integrally provided with a control circuit board (2), the control circuit board (2) is signal connected with components in the motor housing (1), and the control circuit board (2) is externally provided with a wire protection box (3).

2. An integrated small stepping motor controlled by LIN bus as claimed in claim 1, characterized in that: The control circuit board (2) receives control signals on a LIN bus, internally processes and converts the control signals into pulse signals recognizable by a stepping motor, detects a locked-rotor state and a fault condition of the motor, and accumulates an angle of operation.

3. The integrated miniature stepper motor controlled by a LIN bus as described in claim 1, characterized in that: The wire protection box (3) is provided with buckles (4) on both sides, the motor housing (1) is provided with clamping grooves (5), and the buckles (4) and the clamping grooves (5) are matched to enable the wire protection box (3) to be mounted on the motor housing (1).

4. The integrated small stepping motor controlled by LIN bus according to claim 1 or 3, characterized in that: The wire protection box (3) is provided with a maintenance window (6) at an upper end.

5. An integrated small stepping motor controlled by LIN bus as claimed in claim 1, characterized in that: The motor housing (1) is provided with mounting holes (8) on both sides, and the motor housing (1) is fixedly mounted through the mounting holes (8).

6. An integrated small stepper motor controlled by LIN bus as claimed in claim 4, characterized in that: The wire protection box (3) is provided with indicator lights (9), and the indicator lights (9) indicate working conditions of circuits on the control circuit board (2).

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