Small motor structure

Abstract

The utility model relates to the technical field of vehicle-mounted motors. A small motor structure comprises a motor shell which is integrally machined and formed, the interior of the motor shell is of a motor structure, a controller cover plate is fixed to the top of the motor shell, the controller cover plate is welded and fixed to the motor shell, a connector is arranged between the controller cover plate and the motor shell, and the connector comprises an annular connector of a positioning ring. And an arc-shaped circuit board is also arranged in the motor shell. The utility model provides a small motor structure which is reasonable in layout, compact in structure, capable of reducing the size of a motor and improving the working stability of the motor, good in sealing performance in the motor, free of additional fixing parts, rapid and convenient to install, high in overall strength of the motor and long in service life. The technical problems that in the prior art, an existing vehicle-mounted motor is single in structure, large in overall size, limited in application range, poor in overall working stability and unreasonable in layout are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted motors, and in particular to a small motor structure. Background Art

[0002] The current mainstream electronic actuator system uses an independent motor to provide power, and uses an integrated controller and a number of high-precision sensors for precise control. It can not only provide different working outputs according to different working conditions, but also protect the assembly in time under some abnormal conditions (overload, overtemperature, stall, etc.).

[0003] Based on the current development trend of miniaturization, high power and high integration of electronic actuators, how to reduce product size and improve stability while meeting the needs of the entire vehicle is a problem that needs to be solved urgently, so there is a need for improvement. Summary of the invention

[0004] The present invention provides a small motor structure with reasonable layout and compact structure, which can reduce the size of the motor, increase the working stability of the motor, have good sealing inside the motor, do not require additional fixings, are quick and convenient to install, have high overall motor strength and long service life; it solves the technical problems existing in the prior art that the current vehicle-mounted motor has a single structure, a large overall volume, a limited scope of application, poor overall stability of the motor during operation, and an unreasonable layout.

[0005] The above technical problems of the present invention are solved by the following technical solutions: a small motor structure, including an integrally processed motor housing, a motor structure inside the motor housing, a controller cover fixed on the top of the motor housing, the controller cover welded and fixed on the motor housing, a connector provided between the controller cover and the motor housing, the connector including a joint of an annular positioning ring, and an arc-shaped circuit board provided in the motor housing. The motor structure in the utility model is installed in the motor housing, the controller cover is welded on the motor housing at the top to fix the internal structure, and no bolts or other fixings are required. A connector is installed between the controller cover and the motor housing, and the main part of the connector in the utility model is designed as a positioning ring structure, the positioning ring structure can be embedded and installed in the gap at the top of the motor housing, and the wiring can be routed inside, which not only reduces the overall volume but also avoids the exposure of the wiring. When working, the motor is fixed to the matching assembly by bolts, and the overall structure of the motor is compact, the volume is small, and the working stability is high.

[0006] Preferably, the positioning ring of the connector is integrally formed with the joint, and the positioning ring of the connector is embedded in the upper surface of the motor housing. The positioning ring of the connector is embedded between the controller cover and the motor housing, and the joint extends to the outside of the motor housing and is fixed by buckling the motor housing and the controller cover.

[0007] Preferably, the positioning ring of the connector is plastic-coated with pins, and the ends of the pins are led into the motor housing. A wire groove is provided at the ends of the pins, and the wire groove corresponds to the three-phase lead wires of the motor structure. The main body of the connector in the utility model is designed as a positioning ring structure, which can be embedded in the gap at the top of the motor housing and can be wired inside, which reduces the overall volume and prevents the circuit from being exposed; the pins correspond to the three-phase lead wires after being led out.

[0008] Preferably, a sealing ring is embedded on the top of the positioning ring of the connector. The sealing ring on the top of the positioning ring cooperates with the controller cover plate to achieve sealing of the internal structure.

[0009] Preferably, the circuit board is an arc-shaped circuit board, the circuit board is fixed inside the connector, and a plurality of groups of Hall sensors connected to the circuit board are provided on one side of the motor housing close to the drive shaft. The arc-shaped circuit board is installed in the gap between the motor structure and the motor housing, which can reduce the volume of the circuit board and the overall volume of the motor, and the Hall sensor is used to monitor the position of the motor speed.

[0010] Preferably, a plurality of stepped grooves are provided in the motor housing, and the stator structure of the motor structure is stuck in the stepped grooves. The motor structure in the utility model is installed in the motor housing, the stator of the motor structure is embedded in the stepped grooves, and the controller cover is welded to the motor housing at the top to fix the internal structure, without the need for bolts and other fixings.

[0011] Preferably, the contact surfaces of the motor housing and the controller cover are integrally formed with a mating surface extending outward, and a plurality of through holes are provided on the mating surface. During operation, the motor is fixed to the mating assembly by bolts through the through holes on the mating surface and the mating surface, and the motor has a compact structure, a small volume, and high working stability.

[0012] Preferably, a plurality of upwardly extending limit plates are integrally formed on the mating surface of the motor housing. The function of the limit plates is to cooperate with the controller housing to limit the position and increase the stability during operation.

[0013] Therefore, a small motor structure of the present invention has the following advantages: reasonable layout, compact structure, the annular connector structure can reduce the size of the motor and increase the working stability of the motor, the sealing inside the motor is good, no additional fixings are required, the installation is quick and convenient, the overall strength of the motor is high, and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a small motor structure of the utility model.

[0015] Figure 2 yes Figure 1Schematic diagram of the main cross-sectional structure.

[0016] Figure 3 yes Figure 1 Schematic diagram of the top view cross-sectional structure.

[0017] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the motor housing.

[0018] Figure 5 yes Figure 1 Schematic diagram of the three-dimensional structure of the connector.

[0019] Figure 6 yes Figure 1 Schematic diagram of the three-dimensional structure of the controller cover.

[0020] In the figure, there are motor housing 1, stepped groove 2, motor structure 3, controller cover 4, mating surface 5, through hole 6, limit plate 7, circuit board 8, Hall sensor 9, connector 10, positioning ring 11, connector 12, pin 13, and wire groove 14. DETAILED DESCRIPTION

[0021] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] Example:

[0023] like Figure 1 and 2 As shown in Figures 3, 4, 5 and 6, a small motor structure includes an integrally stamped motor housing 1, two integrally formed step grooves 2 in the motor housing 1, the motor housing 1 is a three-section structure, a motor structure 3 is installed in the motor housing 1, and the stator structure of the motor structure 3 is stuck in the step groove 2.

[0024] A controller cover 4 is welded to the top of the motor housing 1, and a mating surface 5 extending horizontally outward is integrally formed on the contact surfaces of the controller cover 4 and the motor housing 1, and four through holes 6 are opened on the mating surface 5, and a limit plate 7 extending upward is integrally formed on the mating surface 5 of the motor housing 1.

[0025] An arc-shaped circuit board 8 is installed at the top of the motor housing 1. The circuit board 8 is installed in the gap between the connector 10 and the motor structure 3. The circuit board 8 is an arc-shaped circuit board 8, and three groups of Hall sensors 9 are installed on the side of the motor housing 1 close to the drive shaft. The three groups of Hall sensors 9 are all connected to the circuit board 8.

[0026] A connector 10 is installed between the motor housing 1 and the controller cover 4 . The connector 10 includes an annular positioning ring 11 embedded in the top of the motor housing 1 and a joint 12 extending outside the motor housing 1 .

[0027] The positioning ring 11 and the joint 12 of the connector 10 are integrally formed.

[0028] A plurality of pins 13 are plastic-coated in the positioning ring 11 of the connector 10 , and the ends of the pins 13 are led out to the inner gap of the motor housing 1 . A wire slot 14 is provided at the end of the pin 13 , and the wire slot 14 is correspondingly connected to the three-phase lead wires of the motor structure 3 .

[0029] A sealing ring is embedded on the top of the positioning ring 11 of the connector 10 .

[0030] The motor structure 3 in the utility model is installed in the motor housing 1, the stator of the motor structure 3 is embedded in the stepped groove 2, and the controller cover 4 is welded to the motor housing 1 on the top to fix the internal structure without using bolts and other fixing parts.

[0031] The circuit board 8 in the present invention is an arc-shaped circuit board 8, which is installed in the gap at the top of the motor housing, and can greatly reduce the volume of the circuit board 8 and the volume of the assembly.

[0032] The main body of the connector 10 in the present invention is designed as a positioning ring 11 structure, which can be embedded in the top gap of the motor housing 1 and can be used for wiring inside, thereby reducing the overall volume and preventing the circuit from being exposed; the pins 13 are led out and correspond to the three-phase lead wires.

[0033] During operation, the motor is fixed to the mating assembly by means of the mating surface 5 and the through holes 6 on the surface of the mating surface 5 with bolts. The motor has a compact structure, a small volume and high working stability.

Claims

1. A small motor structure, characterized in that: It includes an integrally formed motor housing, wherein the motor structure is inside the motor housing, a controller cover is fixed on the top of the motor housing, the controller cover is welded and fixed on the motor housing, a connector is provided between the controller cover and the motor housing, the connector includes a joint of an annular positioning ring, and an arc-shaped circuit board is also provided in the motor housing.

2. A small motor structure according to claim 1, characterized in that: The positioning ring of the connector is integrally formed with the joint, and the positioning ring of the connector is embedded in the upper surface of the motor housing.

3. A small motor structure according to claim 2, characterized in that: The positioning ring of the connector is plastic-wrapped with pins, the ends of the pins are led into the motor housing, and wire grooves are provided at the ends of the pins, which correspond to the three-phase lead wires of the motor structure.

4. A small motor structure according to claim 3, characterized in that: A sealing ring is embedded on the top of the positioning ring of the connector.

5. A small motor structure according to claim 1, characterized in that: The circuit board is an arc-shaped circuit board, which is fixed inside the connector, and a plurality of groups of Hall sensors connected to the circuit board are arranged on one side of the motor housing close to the driving shaft.

6. A small motor structure according to claim 1, characterized in that: A plurality of stepped grooves are provided in the motor housing, and the stator structure of the motor structure is stuck in the stepped grooves.

7. A small motor structure according to claim 6, characterized in that: The contact surfaces of the motor housing and the controller cover are integrally formed with a mating surface extending outward, and a plurality of through holes are provided on the mating surface.

8. A small motor structure according to claim 7, characterized in that: A plurality of upwardly extending limiting plates are integrally formed on the mating surface of the motor housing.

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