Dust collector motor structure

Abstract

The utility model discloses a dust collector motor structure, and relates to the technical field of dust collectors. The dust collector motor structure comprises a motor body and a PCB, the motor body comprises a metal shell, the PCB is arranged on the side portion of the metal shell, and a gap is formed between the PCB and the metal shell. According to the dust collector motor structure, heat generated on the PCB on the dust collector motor structure can be dissipated outwards through the heat conduction effect of the metal shell, the heat dissipation efficiency of the PCB is greatly improved, and the situation that the PCB is damaged due to overheating is avoided.

Description

Technical Field

[0001] This application relates to the field of vacuum cleaners, and in particular to a vacuum cleaner motor structure. Background Technology

[0002] The vacuum cleaner motor, also known as the vacuum cleaner motor, is the heart of the vacuum cleaner, used to drive the vacuum cleaner to perform cleaning operations. A PCB board is installed inside the vacuum cleaner motor; the PCB board is used to connect to the power supply and drive the vacuum cleaner motor to operate.

[0003] During the operation of a vacuum cleaner motor, the PCB board will generate heat. Current technology typically uses natural heat dissipation to address this issue. However, natural heat dissipation is ineffective and can easily lead to damage to the PCB board due to overheating. In severe cases, it can even cause wires, cables, and other materials to melt, potentially causing a fire and posing a significant safety hazard. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides a vacuum cleaner motor structure that can achieve efficient heat dissipation of the PCB board.

[0005] The vacuum cleaner motor structure provided in this application adopts the following technical solution:

[0006] A vacuum cleaner motor structure includes a motor body and a PCB board. The motor body includes a metal housing, and the PCB board is disposed on the side of the metal housing, with a gap between the PCB board and the metal housing.

[0007] By adopting the above technical solution, the heat generated on the PCB board can be dissipated to the outside through the thermal conduction of the metal casing, which greatly improves the heat dissipation efficiency of the PCB board and avoids damage to the PCB board due to overheating.

[0008] In one specific implementation, the side of the metal housing is provided with a mounting groove, and the PCB board is accommodated in the mounting groove and has a clearance fit with the mounting groove.

[0009] By adopting the above technical solution, the mounting slot can accommodate and protect the PCB board, preventing the PCB board from being damaged by direct contact with the external environment.

[0010] In one specific implementation, the gap is provided with a heat-conducting sheet.

[0011] By adopting the above technical solution, the heat-conducting sheet, as the heat-conducting medium between the PCB board and the metal casing, can quickly transfer the heat on the PCB board to the metal casing, further improving the heat dissipation efficiency of the PCB board.

[0012] In one specific implementation, the thermally conductive sheet is a silicone sheet.

[0013] In one specific implementation, the motor body further includes a stator and rotor structure disposed on the side of the metal housing, an impeller disposed inside the metal housing, and the PCB board is located between the stator and rotor structure and the metal housing.

[0014] By adopting the above technical solution, the stator and rotor structure is directly installed on the side of the metal shell, so that there is no need to reserve an installation structure for installing the stator and rotor structure inside the metal shell, which effectively reduces the overall height of the metal shell and facilitates the installation of the vacuum cleaner motor structure of this application inside the vacuum cleaner.

[0015] In one specific implementation, the stator-rotor structure includes a rotor rotatably connected to the impeller and a stator surrounding the rotor. The vacuum cleaner motor structure also includes a plastic frame for supporting the stator, and the plastic frame is connected to the PCB board.

[0016] By adopting the above technical solution, the connection strength between the stator and rotor structure and the metal shell is effectively improved.

[0017] In one specific implementation, the plastic frame is provided with a plurality of puncture terminals, which are connected to the PCB board.

[0018] By adopting the above technical solution, the mounting strength of the PCB board on the metal casing is effectively improved.

[0019] In one specific implementation scheme, the metal housing is provided with a plurality of mounting posts for connecting the stator at intervals around its circumference, and the PCB board is provided with a plurality of clearance holes, each of which corresponds to one of the plurality of mounting posts, and each of the mounting posts is respectively inserted into the corresponding clearance hole and is clearance-fitted with the clearance hole.

[0020] By adopting the above technical solution, it is possible to avoid direct contact between the PCB board and the metal casing, which could lead to circuit failure.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] The heat generated on the PCB board can be dissipated outward through the thermal conduction of the metal casing, which greatly improves the heat dissipation efficiency of the PCB board and prevents the PCB board from being damaged due to overheating. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the vacuum cleaner motor structure according to an embodiment of this application.

[0024] Figure 2 This is a partial cross-sectional schematic diagram of the vacuum cleaner motor structure according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Motor body; 11. Metal housing; 12. Stator and rotor structure; 121. Rotor; 122. Stator; 2. PCB board; 3. Gap; 4. Mounting slot; 5. Heat conduction plate; 6. Plastic frame; 7. Piercing terminal; 8. Mounting post; 9. Clearance hole; 10. Impeller. Detailed Implementation

[0027] The present application is further described in detail below with reference to the accompanying drawings.

[0028] See Figure 1-2 As shown, a vacuum cleaner motor structure includes a motor body 1 and a PCB board 2. The motor body 1 includes a metal housing 11, which is a volute. The PCB board 2 is disposed on the side of the metal housing 11, with a gap 3 between the PCB board 2 and the metal housing 11. This gap 3 prevents the PCB board 2 from directly contacting the metal housing 11 and causing circuit failure. By placing the PCB board 2 close to the metal housing 11, the heat generated on the PCB board 2 can be dissipated through the thermal conduction of the metal housing 11. This combination of metal thermal conduction and natural heat dissipation greatly improves the heat dissipation efficiency of the PCB board 2, preventing damage due to overheating.

[0029] In this embodiment, combined with Figure 1 As shown, a circular mounting groove 4 is provided on the side of the metal casing 11. The PCB board 2 is circular and is coaxially housed in the mounting groove 4 with a clearance fit. A gap 3 is formed between the PCB board 2 and the bottom of the mounting groove 4. The mounting groove 4 can accommodate and protect the PCB board 2, preventing the PCB board 2 from being damaged by direct contact with the external environment.

[0030] In this embodiment, combined with Figure 2 As shown, a heat-conducting sheet 5 is also provided in the mounting slot 4. The heat-conducting sheet 5 is a heat-conducting silicone sheet, which serves as a heat-conducting medium between the PCB board 2 and the metal shell 11. It can quickly conduct heat from the PCB board 2 to the metal shell 11, further improving the heat dissipation efficiency of the PCB board 2.

[0031] In this embodiment, combined again Figure 1-2As shown, the motor body 1 also includes a stator and rotor structure 12 disposed on the side of the metal housing 11 and suspended above the mounting groove 4, an impeller 10 disposed inside the metal housing 11, and a PCB board 2 located between the stator and rotor structure 12 and the metal housing 11. By directly mounting the stator and rotor structure 12 to the side of the metal housing 11, there is no need to reserve a mounting structure for the stator and rotor structure 12 inside the metal housing 11, effectively reducing the overall height of the metal housing 11 and facilitating the installation of the vacuum cleaner motor structure of this application inside the vacuum cleaner.

[0032] The stator and rotor structure 12 includes a rotor 121 coaxial with and rotatably connected to the impeller 10, and a stator 122 surrounding the rotor 121. The vacuum cleaner motor structure also includes a plastic frame 6 for supporting the stator 122. The plastic frame 6 is provided with four piercing terminals 7, which are soldered to the PCB board 2.

[0033] In this embodiment, three mounting posts 8 for connecting the stator 122 are spaced apart around the metal casing 11 in a circumferential direction. The plastic frame 6 is connected to the three mounting posts 8 by bolts. Three clearance holes 9 are provided on the PCB board 2, each corresponding to one of the three mounting posts 8. Each mounting post 8 passes through the corresponding clearance hole 9 and is clearance-fitted with the clearance hole 9. The clearance holes 9 allow for clearance between the PCB board 2 and the mounting posts 8, preventing direct contact between the PCB board 2 and the metal casing 11, which could lead to circuit failure.

[0034] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A vacuum cleaner motor structure, comprising a motor body (1) and a PCB board (2), characterized in that: The motor body (1) includes a metal housing (11), and the PCB board (2) is disposed on the side of the metal housing (11), with a gap (3) between the PCB board (2) and the metal housing (11).

2. The vacuum cleaner motor structure according to claim 1, characterized in that: The metal casing (11) has a mounting groove (4) on its side, and the PCB board (2) is housed in the mounting groove (4) and is fitted with the mounting groove (4) with a clearance.

3. The vacuum cleaner motor structure according to claim 1, characterized in that: The gap (3) contains a heat-conducting sheet (5).

4. The vacuum cleaner motor structure according to claim 3, characterized in that: The heat-conducting sheet (5) is a silicone sheet.

5. A vacuum cleaner motor structure according to any one of claims 1-4, characterized in that: The motor body (1) also includes a stator and rotor structure (12) disposed on the side of the metal housing (11) and an impeller (10) disposed inside the metal housing (11). The PCB board (2) is located between the stator and rotor structure (12) and the metal housing (11).

6. The vacuum cleaner motor structure according to claim 5, characterized in that: The stator-rotor structure (12) includes a rotor (121) rotatably connected to the impeller (10) and a stator (122) surrounding the rotor (121). The vacuum cleaner motor structure also includes a plastic frame (6) for supporting the stator (122), and the plastic frame (6) is connected to the PCB board (2).

7. A vacuum cleaner motor structure according to claim 6, characterized in that: The plastic frame (6) is provided with multiple piercing terminals (7), which are connected to the PCB board (2).

8. A vacuum cleaner motor structure according to claim 6, characterized in that: The metal casing (11) has multiple mounting posts (8) spaced around its circumference for connecting the stator (122). The PCB board (2) has multiple clearance holes (9). The multiple clearance holes (9) correspond one-to-one with the multiple mounting posts (8). Each mounting post (8) passes through the corresponding clearance hole (9) and is clearance-fitted with the clearance hole (9).

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