External rotor motor

Abstract

The utility model discloses an external rotor motor, which comprises a motor part and an electric control part, a stator assembly comprises a stator iron core, an end part insulator and a coil winding, a plurality of wiring terminals are arranged on the end part insulator, and the wiring terminals are electrically connected with the coil winding; the electric control part comprises a shell and a control circuit board, a containing cavity is formed in the bottom face of the bottom plate in a digging mode, a first insulating base is installed in the containing cavity, a wiring board assembly is installed on the bottom face of the first insulating base, and a plurality of through holes are formed in the bottom plate at intervals in the circumferential direction. The top surface of the first insulating seat is provided with a plurality of bosses which are distributed at intervals in the circumferential direction, and the bosses penetrate through the through holes to reach the top surface of the bottom plate. The end portion of the wiring terminal penetrates through the boss and then is electrically connected with the wiring board assembly, and then the wiring board assembly is electrically connected with the control circuit board, so that the control circuit board is electrically connected with the wiring terminal. The wiring board assembly is small in size, flexible and convenient to electrically connect with the wiring terminal, large in operation space, easy to install, high in production efficiency and easy in quality control.

Description

Technical Field

[0001] The utility model relates to an outer rotor motor. Background Art

[0002] The general outer rotor motor has a motor part and an electronic control part. The motor part includes a rotating shaft, a stator assembly, an outer rotor and a sleeve seat. The sleeve seat includes a bottom plate and a sleeve protruding upward from the middle of the bottom plate. A bearing chamber is opened at both ends of the sleeve, and a bearing is installed in the bearing chamber. The stator assembly is sleeved outside the sleeve, and the outer rotor is sleeved outside the stator assembly. The stator assembly includes a stator core, end insulation and coil windings. A number of wiring terminals are installed on the end insulation, and the wiring terminals are electrically connected to the coil windings; the electronic control part includes a housing and a control circuit board. The housing is installed on the bottom surface of the bottom plate and a controller cavity is formed between the housing and the bottom plate. The control circuit board is installed in the controller cavity and installed on the top of the housing; a number of wiring terminals pass through the bottom plate and are directly connected to the control circuit board. For details, see the patent number: CN202223107011, the patent name is: a utility model patent for an outer rotor motor.

[0003] This design has the following problems: 1) The control circuit board is first installed under the base plate, and after the installation is completed, the terminal blocks need to be welded, which results in limited operating space, troublesome installation, difficult operation, and low production efficiency; 2) There is no seal between the stator assembly and the circuit board assembly in the existing motor structure, and water may easily enter the circuit board during long-term operation, causing motor failure, which ultimately fails to meet industry needs. Summary of the invention

[0004] The utility model aims to provide an outer rotor motor, which solves the technical problems in the prior art that the control circuit board of the outer rotor motor is first installed under the base plate, and then the wiring terminals need to be welded to the control circuit board after the installation is completed, the operating space is limited, the installation is troublesome, the operation is difficult, and the production efficiency is low.

[0005] The technical solution of the utility model is achieved in this way:

[0006] An outer rotor motor comprises a motor part and an electric control part, wherein:

[0007] The motor part includes a rotating shaft, a stator assembly, an outer rotor and a sleeve seat. The sleeve seat includes a bottom plate and a sleeve protruding upward from the middle of the bottom plate. Bearing chambers are opened at both ends of the sleeve. Bearings are installed in the bearing chambers. The stator assembly is sleeved outside the sleeve. The outer rotor is sleeved outside the stator assembly. The stator assembly includes a stator core, end insulation and coil windings. A number of wiring terminals are installed on the end insulation, and the wiring terminals are electrically connected to the coil windings.

[0008] The electric control part includes a housing and a control circuit board, the housing is mounted on the bottom surface of the bottom plate and a controller cavity is formed between the housing and the bottom plate, and the control circuit board is mounted in the controller cavity and at the bottom of the housing;

[0009] The invention is characterized in that: a receiving cavity is dug on the bottom surface of the bottom plate, the receiving cavity is connected with the controller cavity, a first insulating seat is installed in the receiving cavity, a wiring board assembly is installed on the bottom surface of the first insulating seat, a plurality of circumferentially spaced through holes are provided on the bottom plate, the through holes are connected with the receiving cavity, a plurality of circumferentially spaced bosses are provided on the top surface of the first insulating seat, and the ends of the bosses pass through the through holes to the top surface of the bottom plate;

[0010] The end of the connection terminal passes through the boss and is electrically connected to the connection board assembly, and the connection board assembly is then electrically connected to the control circuit board, so that the control circuit board is electrically connected to the connection terminal.

[0011] One end of several wires are welded on the above-mentioned wiring board assembly, and the several wires are electrically connected to several wiring terminals respectively. The other ends of the several wires are electrically connected to a plug respectively, and the plug is plugged into the socket of the control circuit board to realize the electrical connection between the wiring board assembly and the control circuit board.

[0012] A number of long wiring pieces are welded on the wiring board assembly, a number of terminal sockets are arranged on the control circuit board, and the long wiring pieces are respectively plugged into the terminal sockets to realize electrical connection between the wiring board assembly and the control circuit board.

[0013] A plurality of mounting posts are protruded from the bottom surface of the first insulating seat, and a plurality of mounting holes are provided on the wiring board assembly, and the plurality of mounting posts are respectively inserted into the plurality of mounting holes.

[0014] Grooves are arranged on the bottom surface of the bottom plate and around the peripheries of the plurality of through holes, and the grooves are filled with sealant, which bonds and seals the bottom plate and the first insulating seat.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. A receiving cavity is excavated on the bottom surface of the bottom plate of the external rotor motor of the utility model, and the receiving cavity is connected with the controller cavity. A first insulating seat is installed in the receiving cavity, and a wiring board assembly is installed on the bottom surface of the first insulating seat. A plurality of circumferentially spaced through holes are provided on the bottom plate, and the through holes are connected with the receiving cavity. A plurality of circumferentially spaced bosses are provided on the top surface of the first insulating seat, and the ends of the bosses pass through the through holes to the top surface of the bottom plate; the ends of the wiring terminals pass through the bosses and are electrically connected with the wiring board assembly, and the wiring board assembly is then electrically connected with the control circuit board, so that the control circuit board is electrically connected with the wiring terminals. The wiring board assembly is small in size, has no electronic components installed, can be flexibly and conveniently electrically connected with the wiring terminals, has a large operating space, is easy to install, has high production efficiency, and is easy to control quality.

[0017] 2. The control circuit board and the terminal board assembly adopt a detachable connection, which greatly facilitates maintenance and disassembly.

[0018] 3. Other advantages of the utility model are described in detail in the embodiment section of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of an outer rotor motor provided in Embodiment 1 of the present utility model;

[0020] Figure 2 A top view of the outer rotor motor provided in Embodiment 1 of the utility model;

[0021] Figure 3 for Figure 2 AA section view;

[0022] Figure 4 An exploded view of an outer rotor motor provided in Embodiment 1 of the utility model at one angle;

[0023] Figure 5 for Figure 4 A partial schematic diagram of

[0024] Figure 6 for Figure 4 Another partial schematic diagram of;

[0025] Figure 7 This is an exploded view of the outer rotor motor provided in Embodiment 1 of the utility model from another angle;

[0026] Figure 8 An exploded view of the connection between the stator assembly and the terminal block assembly provided in the first embodiment of the utility model;

[0027] Fig. 9 A three-dimensional diagram of the stator assembly and the terminal block assembly after assembly provided in the first embodiment of the utility model;

[0028] Fig.10 A schematic diagram of the connection between the wiring board assembly and the control circuit board provided in the first embodiment of the utility model;

[0029] Fig.11 This is a schematic diagram of the connection between the terminal block assembly and the control circuit board provided in the second embodiment of the present utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1:

[0032] like Figures 1 to 10 As shown, this embodiment provides an outer rotor motor, including a motor part 10 and an electric control part 20, wherein:

[0033] The motor part 10 includes a rotating shaft 1, a stator assembly 2, an outer rotor 3 and a sleeve seat 4. The sleeve seat 4 includes a bottom plate 41 and a sleeve 42 protruding upward from the middle of the bottom plate 41. Bearing chambers 421 are opened at both ends of the sleeve 42. Bearings are installed in the bearing chambers 421. The stator assembly 2 is sleeved outside the sleeve 42, and the outer rotor 3 is sleeved outside the stator assembly 2. The stator assembly 2 includes a stator core 21, an end insulation 22 and a coil winding 23. A plurality of wiring terminals 24 are installed on the end insulation 22, and the wiring terminals 24 are electrically connected to the coil winding 23.

[0034] The electric control part 20 includes a housing 201 and a control circuit board 202. The housing 201 is mounted on the bottom surface of the bottom plate 41 and a controller cavity 203 is formed between the housing 201 and the bottom plate 41. The control circuit board 202 is mounted in the controller cavity 203 and at the bottom of the housing 201.

[0035] The invention is characterized in that: a receiving cavity 411 is dug on the bottom surface of the bottom plate 41, the receiving cavity 411 is communicated with the controller cavity 203, a first insulating seat 5 is installed in the receiving cavity 411, a wiring board assembly 6 is installed on the bottom surface of the first insulating seat 5, a plurality of circumferentially spaced through holes 412 are provided on the bottom plate 41, the through holes 412 are communicated with the receiving cavity 411, a plurality of circumferentially spaced bosses 51 are provided on the top surface of the first insulating seat 5, and the ends of the bosses 51 pass through the through holes 412 and out to the top surface of the bottom plate 41;

[0036] The end of the terminal block 24 passes through the boss 51 and is electrically connected to the terminal block assembly 6, and the terminal block assembly 6 is then electrically connected to the control circuit board 202, so that the control circuit board 202 is electrically connected to the terminal block 24. A plurality of slots 64 are provided on the terminal block assembly 6, and a plurality of terminal blocks 24 are respectively inserted into the plurality of slots 64 and then electrically connected by welding. The terminal block assembly 6 is small in size, has no electronic components installed, can be flexibly and conveniently electrically connected to the terminal block, has a large operating space, is easy to install, has high production efficiency, and is easy to control quality.

[0037] One end of a plurality of wires 61 is welded on the above-mentioned terminal block assembly 6, and the plurality of wires 61 are electrically connected to a plurality of terminal blocks 24 respectively. The other ends of the plurality of wires 61 are electrically connected to a plug 62 respectively. The plug 62 is plugged into the socket of the control circuit board 202 (not shown in the drawing) to realize the electrical connection between the terminal block assembly 6 and the control circuit board 202. The installation is relatively simple and convenient, and it is easy to install and disassemble, easy to maintain, and improves production efficiency.

[0038] A plurality of mounting posts 52 protrude from the bottom surface of the first insulating seat 5, and a plurality of mounting holes 66 are provided on the terminal block assembly 6. The plurality of mounting posts 52 are respectively inserted into the plurality of mounting holes 66, so that the structure is simple and the installation is convenient.

[0039] The bottom surface of the bottom plate 41 and the periphery of the plurality of through holes 412 are provided with grooves 413 , and the grooves 413 are filled with sealant, which bonds and seals the bottom plate 41 and the first insulating seat 5 , thus having a good sealing and waterproofing function.

[0040] Embodiment 2:

[0041] This embodiment is an improvement on the first embodiment, and the main improvements are: Fig.11 As shown, a plurality of long wiring pieces 63 are welded on the terminal block assembly 6 (only one long wiring piece is shown in the figure), a plurality of terminal sockets 65 are arranged on the control circuit board 202, and the plurality of long wiring pieces 63 are respectively plugged into the plurality of terminal sockets 65, so as to realize the electrical connection between the terminal block assembly 6 and the control circuit board 202, with a simple structure and convenient installation and disassembly.

[0042] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An outer rotor motor, comprising a motor part (10) and an electric control part (20), wherein: The motor part (10) comprises a rotating shaft (1), a stator assembly (2), an outer rotor (3) and a sleeve seat (4); the sleeve seat (4) comprises a bottom plate (41) and a sleeve (42) protruding upward from the middle of the bottom plate (41); bearing chambers (421) are provided at both ends of the sleeve (42); bearings are installed in the bearing chambers (421); the stator assembly (2) is sleeved outside the sleeve (42); the outer rotor (3) is sleeved outside the stator assembly (2); the stator assembly (2) comprises a stator core (21), an end insulation (22) and a coil winding (23); a plurality of connection terminals (24) are installed on the end insulation (22); the connection terminals (24) are electrically connected to the coil winding (23); The electric control part (20) comprises a housing (201) and a control circuit board (202); the housing (201) is mounted on the bottom surface of the base plate (41) and a controller cavity (203) is formed between the housing (201) and the base plate (41); the control circuit board (202) is mounted in the controller cavity (203) and at the bottom of the housing (201); The invention is characterized in that: a receiving cavity (411) is excavated on the bottom surface of the bottom plate (41), the receiving cavity (411) is connected with the controller cavity (203), a first insulating seat (5) is installed in the receiving cavity (411), a wiring board assembly (6) is installed on the bottom surface of the first insulating seat (5), a plurality of circumferentially spaced through holes (412) are provided on the bottom plate (41), the through holes (412) are connected with the receiving cavity (411), a plurality of circumferentially spaced bosses (51) are provided on the top surface of the first insulating seat (5), and the ends of the bosses (51) pass through the through holes (412) and out to the top surface of the bottom plate (41); The end of the connection terminal (24) passes through the boss (51) and is electrically connected to the connection board assembly (6), and the connection board assembly (6) is then electrically connected to the control circuit board (202), so that the control circuit board (202) is electrically connected to the connection terminal (24).

2. An outer rotor motor according to claim 1, characterized in that: One end of a plurality of electric wires (61) is welded on the wiring board assembly (6), the plurality of electric wires (61) are electrically connected to a plurality of wiring terminals (24), and the other ends of the plurality of electric wires (61) are electrically connected to a plug (62), and the plug (62) is plugged into a socket of the control circuit board (202) to realize electrical connection between the wiring board assembly (6) and the control circuit board (202).

3. The outer rotor motor according to claim 1, characterized in that: A plurality of long wiring pieces (63) are welded on the wiring board assembly (6), a plurality of terminal sockets (65) are arranged on the control circuit board (202), and the plurality of long wiring pieces (63) are respectively plugged into the plurality of terminal sockets (65) to realize electrical connection between the wiring board assembly (6) and the control circuit board (202).

4. An outer rotor motor according to claim 1, 2 or 3, characterized in that: A plurality of mounting columns (52) protrude from the bottom surface of the first insulating seat (5), and the wiring board assembly (6) is provided with a plurality of mounting holes (66), and the plurality of mounting columns (52) are respectively inserted into the plurality of mounting holes (66).

5. An outer rotor motor according to claim 4, characterized in that: A groove (413) is provided on the bottom surface of the bottom plate (41) and around the plurality of through holes (412). The groove (413) is filled with a sealant, and the sealant bonds and seals the bottom plate (41) and the first insulating seat (5).

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