Motor

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a motor, which comprises a base, a stator and rotor assembly arranged in the base, a support mounted on the upper end face of the base, a mounting cavity formed in the support and used for mounting a circuit board, and a fixing cover mounted on the support and used for sealing the mounting cavity. A limiting column used for abutting against the end face of the circuit board is formed on the lower end face of the fixing cover, and a wire fixing clamp is arranged between the fixing cover and one side wall of the support. Through the design that the cavity is installed on the support, the circuit board can be independently installed in the installation cavity, and therefore installation of circuit boards of different specifications can be met; moreover, the heat generated in the working process does not affect the normal work of the motor, the design of the detachable fixing cover facilitates the disassembly, replacement and maintenance of the circuit board, the installation position of the circuit board can be further limited through the limiting column, the circuit board is prevented from moving, the overall structure is more stable, and the service life of the product is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly refers to a motor. Background Art

[0002] At present, in order to shorten the circuit, a power drive circuit board electrically connected to the winding of the motor is arranged inside the motor housing.

[0003] For example, in a Chinese utility model with a patent number of CN202222218424.8, a disclosed DC motor for a ventilation fan includes an upper cover housing, a support, a rotating shaft, a rotor and a stator. The support forms a bottom plate for mounting on the housing of the ventilation fan. A pillar is formed on the bottom plate. The rotating shaft is rotatably connected inside the pillar. The rotor is sleeved outside the stator. The upper cover housing is suitably sleeved outside the rotor. Among them, it further includes a lower sleeve housing. The lower part of the pillar is arranged inside the lower sleeve housing. A circuit board accommodating cavity for accommodating a circuit board and components is arranged inside the lower sleeve housing. The lower end of the lower sleeve housing is connected to the bottom plate. An inner flange is formed at the upper end of the lower sleeve housing. The inner flange is located outside the upper cover housing.

[0004] Since the circuit board is arranged in the accommodating cavity and installed on the outer periphery of the pillar, the structure is relatively complex, making the disassembly and assembly of the circuit board rather cumbersome. Therefore, this structure needs to be further improved. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a motor, which solves the problem of the complex installation structure of the circuit board through a fixed cover.

[0006] The purpose of the utility model is realized as follows: A motor includes a base. A stator-rotor assembly is arranged inside the base. A support is installed on the upper end face of the base. An installation cavity for installing a circuit board is formed inside the support. A fixed cover for closing the installation cavity is installed on the support. A limiting post for abutting against the end face of the circuit board is formed on the lower end face of the fixed cover. A wire fixing clip is arranged between the fixed cover and one side wall of the support.

[0007] Preferably, a clamping post is formed on the lower end face of the fixed cover. Installation parts are respectively formed on both sides of the installation cavity. A clamping hole for the clamping post to be clamped into is opened inside the installation part.

[0008] Preferably, a skeleton is installed on the stator-rotor assembly. A plurality of upright columns are arranged on the skeleton. A through hole for the upright columns to pass through is opened inside the support. A limiting hole for the upright columns to pass through is opened on the circuit board.

[0009] Preferably, an installation groove one for installing the circuit board is formed inside the installation cavity. The shape of the installation groove one matches the shape of the circuit board.

[0010] Preferably, an annular platform for the fixed cover to abut against is formed on the inner circumference of the support.

[0011] Preferably, a limiting block is formed at the bottom of the wire fixing clip, and a second installation groove for installing the wire fixing clip is formed on the side wall of the support. A limiting groove for accommodating the limiting block is formed in the second installation groove.

[0012] Preferably, fixing parts are respectively formed at both ends of the support, and a plurality of fixing holes are formed in the fixing parts.

[0013] Preferably, the stator-rotor assembly includes a stator and a rotor. A lower skeleton is installed on the lower end face of the stator, an upper skeleton is installed on the upper end face of the stator, a plurality of socket connectors are arranged on the upper skeleton, a plug-in part is arranged on the lower end face of the skeleton, and a motor shaft is arranged in the stator-rotor assembly. Bearings are installed on the outer circumference of the motor shaft.

[0014] The prominent and beneficial technical effects of the present utility model compared with the prior art are as follows:

[0015] Through the design of installing a cavity on the support, the circuit board can be separately installed in the installation cavity, so as to meet the installation of circuit boards of different specifications, and the heat generated during the working process will not affect the normal operation of the motor. The design of the detachable fixed cover facilitates the disassembly and assembly of the circuit board, making replacement and maintenance convenient. The position of the circuit board can be further restricted by the limiting posts to prevent it from moving during use, making the overall structure more stable and extending the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0017] Figure 2 is a structural schematic diagram of the present utility model when the fixed cover is opened.

[0018] Figure 3 is a structural schematic diagram of the present utility model when the circuit board is not installed.

[0019] Figure 4 is a structural schematic diagram of the stator-rotor assembly and the skeleton in the base.

[0020] Figure 5 is an exploded view of the parts of the stator-rotor assembly.

[0021] Reference numerals: 1 - base; 2 - stator-rotor assembly; 3 - support; 4 - circuit board; 5 - installation cavity; 6 - fixing cover; 7 - limiting post; 8 - wire clamp; 9 - clamping post; 10 - installation part; 11 - clamping hole; 12 - skeleton; 13 - upright post; 14 - through hole; 15 - limiting hole; 16 - first installation groove; 17 - annular platform; 18 - limiting block; 19 - second installation groove; 20 - limiting groove; 21 - fixing part; 22 - fixing hole; 23 - stator; 24 - rotor; 25 - lower skeleton; 26 - upper skeleton; 27 - socket; 28 - insertion part; 29 - motor shaft; 30 - bearing. Detailed implementation manners

[0022] The following further elaborates on the detailed implementation manners of the present utility model with reference to the accompanying drawings.

[0023] As Figures 1-4 shown, a motor includes a base 1. A stator-rotor assembly 2 is arranged inside the base 1. A support 3 is installed on the upper end surface of the base 1. An installation cavity 5 for installing a circuit board 4 is formed inside the support 3. A fixing cover 6 for closing the installation cavity 5 is installed on the support 3, thereby effectively preventing external dust and other sundries from entering the installation cavity 5 and prolonging the service life of the circuit board. A detachable connection structure is adopted between the fixing cover 6 and the support 3. A limiting post 7 for abutting against the end surface of the circuit board 4 is formed on the lower end surface of the fixing cover 6. A wire clamp 8 is arranged between one side wall of the fixing cover 6 and the support 3.

[0024] Through the design of the installation cavity on the support 3 in the present utility model, the circuit board can be separately installed in this installation cavity, so as to meet the installation of circuit boards of different specifications, and the heat generated during the working process will not affect the normal operation of the motor. The design of the detachable fixing cover facilitates the disassembly and assembly of the circuit board, making replacement and maintenance convenient. Through the limiting post 6, the installation position of the circuit board 4 can be further restricted to prevent it from moving during use, making the overall structure more stable and prolonging the service life of the product.

[0025] Combined with Figure 2 and Figure 3 , a clamping post 9 is formed on the lower end surface of the fixing cover 6. Installation parts 10 are respectively formed on both sides of the installation cavity 5. Clamping holes 11 for the clamping post 9 to be inserted into are formed inside the installation parts 10. During the actual installation process, by inserting the clamping post 9 into the clamping hole 11, the fixed installation of the fixing cover 6 on the support 3 can be realized. This installation structure is simple and has a low cost.

[0026] Combined with Figure 3 and Figure 4, a skeleton 12 is installed on the stator-rotor assembly 2, and a number of upright columns 13 are provided on the skeleton 12. A through hole 14 for the upright column 13 to pass through is formed in the support 3, and a limit hole 15 for the upright column 13 to pass through is formed in the circuit board 4. When the circuit board 4 is placed into the installation cavity 5, it will be sleeved on the outer periphery of the upright column 13 through the limit hole 15, so as to further limit the installation position of the circuit board 4 and effectively prevent it from moving.

[0027] Specifically, see Figure 3 , an installation groove 16 for installing the circuit board 4 is formed in the installation cavity 5, and the shape of the installation groove 16 matches the shape of the circuit board 4, so as to further limit the movement of the circuit board 4 and fix its installation position.

[0028] An annular platform 17 for the fixed cover 6 to abut against is formed on the inner periphery of the support 3.

[0029] Specifically, see Figure 3 , a limit block 18 is formed at the bottom of the wire fixing clip 8, and an installation groove 19 for installing the wire fixing clip 8 is formed in the side wall of the support 3. A limit groove 20 for accommodating the limit block 18 is formed in the installation groove 19, so as to fix the position of the wire fixing clip 8 and effectively prevent it from falling out of the installation groove 19.

[0030] Fixing parts 21 are respectively formed at both ends of the support 3, and a number of fixing holes 22 are formed in the fixing parts 21.

[0031] The stator-rotor assembly 2 includes a stator 23 and a rotor 24. A lower skeleton 25 is installed on the lower end face of the stator 23, an upper skeleton 26 is installed on the upper end face of the stator 23, and a number of socket connectors 27 are provided on the upper skeleton 26. A plug-in part 28 is provided on the lower end face of the skeleton 12, and the skeleton 12 is inserted on the socket connector 27 through the plug-in part 28. A motor shaft 29 is arranged in the stator-rotor assembly 2, and a bearing 30 is installed on the outer periphery of the motor shaft 29.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor, characterized in that: The invention comprises a base (1), wherein a stator and rotor assembly (2) is arranged in the base (1), a support (3) is installed on the upper end surface of the base (1), a mounting cavity (5) for mounting a circuit board (4) is formed in the support (3), a fixing cover (6) for closing the mounting cavity (5) is installed on the support (3), a limiting column (7) for abutting against the end surface of the circuit board (4) is formed on the lower end surface of the fixing cover (6), and a wire clamp (8) is arranged between the fixing cover (6) and a side wall of the support (3).

2. The motor according to claim 1, characterized in that: A clamping column (9) is formed on the lower end surface of the fixed cover (6), and mounting portions (10) are respectively formed on both sides of the mounting cavity (5), wherein a clamping hole (11) for the clamping column (9) to be clamped is provided in the mounting portion (10).

3. The motor according to claim 1 or 2, characterized in that: A frame (12) is installed on the stator and rotor assembly (2), a plurality of columns (13) are arranged on the frame (12), through holes (14) for the columns (13) to pass through are provided in the support (3), and limiting holes (15) for the columns (13) to pass through are provided on the circuit board (4).

4. The motor according to claim 3, characterized in that: A mounting groove (16) for mounting a circuit board (4) is formed in the mounting cavity (5), and the shape of the mounting groove (16) matches the shape of the circuit board (4).

5. The motor according to claim 1, characterized in that: The inner periphery of the support (3) is formed with an annular platform (17) for the fixed cover (6) to abut against.

6. The motor according to claim 1, characterized in that: A limiting block (18) is formed at the bottom of the wire clamp (8), and a second mounting groove (19) for mounting the wire clamp (8) is formed on the side wall of the support (3), and a limiting groove (20) for accommodating the limiting block (18) is formed in the second mounting groove (19).

7. The motor according to claim 1, characterized in that: The two ends of the support (3) are respectively formed with fixing parts (21), and the fixing parts (21) are provided with a plurality of fixing holes (22).

8. The motor according to claim 1, characterized in that: The stator-rotor assembly (2) comprises a stator (23) and a rotor (24); a lower frame (25) is installed on the lower end surface of the stator (23); an upper frame (26) is installed on the upper end surface of the stator (23); a plurality of sockets (27) are arranged on the upper frame (26); a plug-in portion (28) is arranged on the lower end surface of the frame (12); a motor shaft (29) is arranged in the stator-rotor assembly (2); and a bearing (30) is installed on the outer periphery of the motor shaft (29).

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