Magnetic leakage prevention permanent magnet motor

Abstract

The utility model discloses a magnetic flux leakage prevention permanent magnet motor, which relates to the technical field of motors and comprises a permanent magnet motor, a protection mechanism, a rotating shaft mechanism and the like, a magnetic flux leakage prevention protection ring of the protection mechanism is matched with the motor and can be directly sleeved on the outer side of the motor, the motor is fixed by utilizing a clamping principle, and the surface of the magnetic flux leakage prevention protection ring is not provided with a notch. Meanwhile, fixing is conducted according to the clamping principle, disassembling is easy, mounting and disassembling are convenient for a user, the length of the part, exposed out of the main pipe, of the auxiliary rod can be adjusted so that the length of the whole rotating shaft mechanism can be adjusted, the length of the rotating shaft mechanism can be adjusted, and the practicability of the rotating shaft mechanism is improved. Therefore, the rotating shaft mechanism can be adjusted to adapt to various use scenes, and the application range of the device is enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a magnetic leakage prevention permanent magnet motor. Background Technique

[0002] Permanent magnet DC motors can be divided into permanent magnet brushless DC motors and permanent magnet brushed DC motors according to whether there are brushes. A permanent magnet DC motor is a DC motor that uses permanent magnets to establish a magnetic field. Permanent magnet DC motors are widely used in various portable electronic devices or appliances, such as tape recorders, VCD players, record players, electric massagers, and various toys. They are also widely used in industries such as automobiles, motorcycles, hand dryers, electric bicycles, battery vehicles, ships, aviation, and machinery. They are also widely used in some high-precision products, such as video recorders, copiers, cameras, mobile phones, precision machine tools, bank note counting machines, and banknote bundling machines. In order to avoid magnetic leakage, a magnetic leakage prevention protection ring needs to be set outside the motor.

[0003] For example, the patent network discloses a high-power ground brush permanent magnet DC motor (publication number: CN209526643U). Due to its installation principle, the magnetic leakage prevention protection ring of this device will have a notch. If the installation is not careful and the notch is too large, it may affect its magnetic leakage prevention effect. Therefore, those skilled in the art have proposed a magnetic leakage prevention permanent magnet motor. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a magnetic leakage prevention permanent magnet motor. The magnetic leakage prevention protection ring of this device is directly sleeved outside the motor and will not generate a notch, thus avoiding the problems in the above background.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A magnetic leakage prevention permanent magnet motor, including:

[0006] A permanent magnet motor, which is the main body of the device;

[0007] A protection mechanism, which is used to protect the permanent magnet motor from magnetic leakage;

[0008] The protection mechanism includes a fixed seat installed at the center of the side of the permanent magnet motor. Two cavities are correspondingly opened inside the fixed seat. A limiting plate is slidably arranged inside each cavity. A spring is arranged on one side of the limiting plate inside each cavity. A magnetic leakage prevention protection ring is sleeved on the outer surface of the permanent magnet motor. Two fixing pieces are correspondingly installed on one side of the fixed seat on the side of the magnetic leakage prevention protection ring. A clamping groove aligned with the cavity is opened on the side of each fixing piece. A clamping member extending into the adjacent clamping groove is installed at the center of the side of each limiting plate;

[0009] A rotating shaft mechanism, which is used for transmission.

[0010] As a further technical solution of the present utility model, the protection mechanism further includes two strip-shaped grooves opened on the side surface of the fixed seat and communicated with the two cavities, and a dial block penetrating through the strip-shaped groove and extending to the outside of the fixed seat is installed on the surface of each limiting plate.

[0011] As a further technical solution of the present utility model, the rotating shaft mechanism includes a main pipe installed at the driving end of the permanent magnet motor, and a secondary rod slidably arranged in the main pipe and adapted to it.

[0012] As a further technical solution of the present utility model, a plurality of uniformly distributed adjusting holes are opened on the side surface of the main pipe, and a through hole aligned with one of the adjusting holes is opened on the side surface of the secondary rod.

[0013] As a further technical solution of the present utility model, a bolt is arranged between the through hole and the aligned adjusting hole.

[0014] Beneficial effects

[0015] The present utility model provides a magnetic leakage prevention permanent magnet motor. Compared with the prior art, it has the following beneficial effects:

[0016] 1. For a magnetic leakage prevention permanent magnet motor, the magnetic leakage prevention protection ring of the protection mechanism of the present device is adapted to the motor and can be directly sleeved on its outer side, and is fixed by using the clamping principle. There is no notch on the surface of the magnetic leakage prevention protection ring, so the situation of reduced magnetic leakage prevention effect will not occur. At the same time, it is fixed by using the clamping principle, making its disassembly simple and convenient for users to install and disassemble.

[0017] 2. For a magnetic leakage prevention permanent magnet motor, the present device can adjust the length of the secondary rod exposed outside the main pipe, thereby adjusting the length of the entire rotating shaft mechanism, so that the length of the rotating shaft mechanism can be adjusted, and thus the rotating shaft mechanism can be adjusted to adapt to a variety of usage scenarios, increasing the applicable range of the device. Description of the drawings

[0018] Figure 1 It is a structural schematic diagram of a magnetic leakage prevention permanent magnet motor;

[0019] Figure 2 It is a cross-sectional view of a magnetic leakage prevention permanent magnet motor;

[0020] Figure 3 It is a structural schematic diagram of the magnetic leakage prevention protection ring of a magnetic leakage prevention permanent magnet motor;

[0021] Figure 4 It is an exploded view of the rotating shaft mechanism of a magnetic leakage prevention permanent magnet motor.

[0022] In the figure: 1, permanent magnet motor; 2, fixed seat; 3, cavity; 4, limiting plate; 5, spring; 6, clamping part; 7, strip-shaped groove; 8, dial block; 9, magnetic leakage prevention protection ring; 10, fixing part; 11, clamping groove; 12, main rod; 13, auxiliary rod; 14, adjusting hole; 15, through hole; 16, bolt. Detailed implementation manners

[0023] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and implementation manners. It can be understood that the specific implementation manners described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for the convenience of description, only the parts related to the present disclosure are shown in the drawings.

[0024] As Figures 1-4 shown, a magnetic leakage prevention permanent magnet motor of the present disclosure may include components such as a permanent magnet motor (1), a protection mechanism, and a rotating shaft mechanism;

[0025] The permanent magnet motor 1 serves as the main body and can drive the rotating shaft mechanism to rotate;

[0026] As Figures 1-4 shown, the protection mechanism includes a fixed seat 2, a cavity 3, a limiting plate 4, a spring 5, a clamping part 6, a strip-shaped groove 7, a dial block 8, a magnetic leakage prevention protection ring 9, a fixing part 10, and a clamping groove 11;

[0027] The fixed seat 2 is installed at the center of the rear surface of the permanent magnet motor 1. Two cavities 3 are opened inside the fixed seat 2. Two limiting plates 4 are slidably arranged in the two cavities 3. Each spring 5 is arranged inside the corresponding limiting plate 4 and is on one side of the spring 5. The magnetic leakage prevention protection ring 9 is sleeved outside the permanent magnet motor 1. Two fixing parts 10 are installed on the side surface of the magnetic leakage prevention protection ring 9 and are on one side of the fixed seat 2. Each clamping groove 11 is opened at the center of the side surface of the corresponding fixing part 10. Each clamping part 6 is installed at the center of the side surface of the corresponding limiting plate 4 and extends into the aligned clamping groove 11. Each strip-shaped groove 7 is opened on the side surface of the fixed seat 2 and communicates with the corresponding cavity 3. Each dial block 8 is installed on the side surface of the corresponding limiting plate 4 and passes through the strip-shaped groove 7 and extends to the outside of the fixed seat 2;

[0028] When installing the anti-leakage magnetic protection ring 9, move the two toggle blocks 8 closer to each other, which drives the two limit plates 4 closer to each other. While each moving limit plate 4 compresses the spring 5, it drives the clamping member 6 into the cavity 3. Then, put the anti-leakage magnetic protection ring 9 on the permanent magnet motor 1. At the same time, rotate the anti-leakage magnetic protection ring 9 to align the two card slots 11 with the two clamping members 6. Then release the two toggle blocks 8, and the two springs 5 rebound to drive the two limit plates 4 back to their original positions, thereby driving the two clamping members 6 to insert into the aligned card slots 11, thus fixing the anti-leakage magnetic protection ring 9 on the permanent magnet motor 1. When disassembling, just move the two toggle blocks 8 closer to each other. Through these operations, the two clamping members 6 are moved out of the card slots 11 and into the cavity 3, and the fixation of the anti-leakage magnetic protection ring 9 can be released, and it can be removed from the permanent magnet motor 1;

[0029] As Figures 1-4 shown, it includes a main pipe 12, a sub-rod 13, adjustment holes 14, through holes 15, and bolts 16;

[0030] The main pipe 12 is installed at the driving end of the permanent magnet motor 1. The sub-rod 13 is slidably arranged inside the main pipe 12. A plurality of adjustment holes 14 are evenly opened on the side of the main pipe 12. A through hole 15 is opened on the side of the sub-rod 13 and is aligned with one of the adjustment holes 14. The bolt 16 is arranged in the through hole 15 and the adjustment hole 14 aligned with it;

[0031] When adjusting the length of the rotating shaft mechanism, first remove the bolt 16 from the mechanism to release the fixation between the main pipe 12 and the sub-rod 13. Then pull the sub-rod 13 outwards to adjust the length of the rotating shaft mechanism until the predetermined length is reached. Then finely adjust the sub-rod 13 to align the through hole 15 with the nearest adjustment hole 14. Then reinstall the bolt 16 between the through hole 15 and the adjustment hole 14 aligned with it to fix the main pipe 12 and the sub-rod 13 again. The length adjustment is completed, and thus the length of the rotating shaft mechanism can be changed, increasing the applicable range of the device.

[0032] In the description of this specification, the description referring to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with that embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] Those skilled in the art should understand that the above-described embodiments are merely for clearly illustrating the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A permanent magnet motor with anti-leakage flux, characterized in that: include: A permanent magnet motor (1), wherein the permanent magnet motor (1) is a device body; A protection mechanism, the protection mechanism being used to protect the permanent magnet motor (1) from magnetic flux leakage; The protection mechanism comprises a fixing seat (2) installed at the center of the side of the permanent magnet motor (1); two cavities (3) are correspondingly provided inside the fixing seat (2); a limiting plate (4) is slidably provided inside each of the cavities (3); a spring (5) is provided on one side of the limiting plate (4) in each of the cavities (3); an anti-magnetic leakage protection ring (9) is sleeved on the outer surface of the permanent magnet motor (1); two fixing members (10) are correspondingly installed on the side of the anti-magnetic leakage protection ring (9) on one side of the fixing seat (2); a slot (11) aligned with the cavity (3) is provided on the side of each fixing member (10); and a fixing member (6) extending into the adjacent slot (11) is installed at the center of the side of each limiting plate (4); A rotating shaft mechanism is used for transmission.

2. The anti-leakage magnetic permanent magnet motor according to claim 1, characterized in that: The protection mechanism further comprises two strip grooves (7) opened on the side of the fixing seat (2) and communicating with the two cavities (3), and a shifting block (8) is installed on the surface of each of the limiting plates (4) and extends through the strip groove (7) to the outside of the fixing seat (2).

3. The anti-leakage magnetic permanent magnet motor according to claim 1, characterized in that: The rotating shaft mechanism comprises a main pipe (12) mounted on the driving end of the permanent magnet motor (1), and a secondary rod (13) adapted thereto is slidably arranged in the main pipe (12).

4. The anti-leakage magnetic permanent magnet motor according to claim 3, characterized in that: The side surface of the main pipe (12) is provided with a plurality of evenly distributed adjustment holes (14), and the side surface of the auxiliary rod (13) is provided with a through hole (15) aligned with one of the adjustment holes (14).

5. The anti-leakage magnetic permanent magnet motor according to claim 4, characterized in that: A bolt (16) is arranged between the through hole (15) and the adjustment hole (14) aligned therewith.

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