CN217720957U

CN217720957U - Permanent magnet motor

Info

Publication number: CN217720957U
Application number: CN202221911479.0U
Authority: CN
Inventors: 许国军
Original assignee: Zhejiang Aolong Motor Technology Co ltd
Current assignee: Zhejiang Aolong Motor Technology Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-11-01
Anticipated expiration: 2032-07-21

Abstract

The application relates to a permanent magnet motor, which comprises a base, a motor shaft and a fan, wherein the motor shaft is rotationally connected to the base, and a blind hole is formed in the periphery of the motor shaft; the fan is provided with a mounting hole, the mounting hole is used for coaxially embedding a motor shaft, and the hole wall of the mounting hole is provided with a positioning hole which penetrates through the fan along the direction deviating from the axis of the positioning hole; the positioning hole is embedded with a positioning column, and the positioning column extends into the mounting hole and is embedded into the blind hole. When reference column breaks away from the blind hole in this application, people can take off the fan and change new fan, when locating the motor shaft periphery with new fan cover for the reference column imbeds to the blind hole in again, with the change of accomplishing the fan, thereby be convenient for people to maintain the fan or change.

Description

Permanent magnet motor

Technical Field

The application relates to the field of motors, in particular to a permanent magnet motor.

Background

At present, the application range of the permanent magnet motor is wider and wider, and the permanent magnet motor is basically related to household appliances in the metallurgical industry, locomotive driving and daily life.

In the working process of the permanent magnet motor, heat can be generated, and the conventional permanent magnet motor adopts an air cooling mode to dissipate heat, namely, the air flow is accelerated by a fan to achieve the purpose of heat dissipation. However, during the long-term use of the permanent magnet motor, dust and debris may adhere to the fan blades of the fan, thereby affecting the use of the fan and the heat dissipation of the permanent magnet motor. At present, the fans of most permanent magnet motors are fixedly connected to the motor shaft of the motor through interference fit between the fans and the motor shaft, but the fans are inconvenient to clean and maintain or replace.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the replacement of the fan, the application provides a permanent magnet motor.

The application provides a permanent-magnet machine adopts following technical scheme:

a permanent magnet motor comprises a base, a motor shaft and a fan, wherein the motor shaft is rotationally connected to the base, and a blind hole is formed in the periphery of the motor shaft; the fan is provided with a mounting hole, the mounting hole is used for coaxially embedding a motor shaft, and the hole wall of the mounting hole is provided with a positioning hole which penetrates through the fan along the direction deviating from the axis of the positioning hole; a positioning column is embedded in the positioning hole, extends into the mounting hole and is embedded into the blind hole.

Through adopting above-mentioned technical scheme, when the motor shaft rotated, the reference column was embedded into simultaneously in locating hole and the blind hole, made motor shaft and fan along the circumference of motor shaft and the axial of motor shaft relatively static as far as possible through the reference column to make the motor shaft drive the fan through the reference column and rotate. When the fan needs clean maintenance or changes the fan, can follow the blind hole with the reference column and take out, can make the fan break away from the motor shaft this moment, people can change or clean maintenance to the fan, after clean, locate the periphery of motor shaft with the fan cover to make the reference column imbed again in the blind hole, in order to accomplish the maintenance or the change of fan. Thereby being convenient for people to maintain or change the fan.

Preferably, the periphery of the positioning column is provided with threads, and the positioning column is in threaded connection with the positioning hole.

Through adopting above-mentioned technical scheme, when reference column threaded connection was in the threaded hole, the reference column was difficult for taking place easily along self axial for the reference column can be comparatively stable connect in the locating hole, with the stability that improves the reference column embedding to the blind hole. Secondly, when people maintain or change the fan, threaded connection that the reference column still can be stable in the locating hole, people need not take out the reference column from the locating hole to avoid the loss of reference column.

Preferably, the fan includes a body and a connecting portion, the connecting portion is detachably connected to the body, and the positioning hole and the mounting hole are both located on the connecting portion.

Through adopting above-mentioned technical scheme, when the motor shaft rotated, the motor shaft made the pore wall of locating hole bear certain load through driving the reference column, and connecting portion can dismantle and connect in the body, when connecting portion need be changed or maintain, need not change or maintain the body to people maintain or change the whole fan. Meanwhile, the connecting part is replaced without replacing the body, so that the replacement cost can be reduced.

Preferably, the connecting part comprises a connecting column and a connecting tooth, the connecting column is coaxially and fixedly connected to the connecting tooth, the positioning hole and the mounting hole are both arranged on the connecting column, and the axial directions of the mounting hole and the connecting column are the same; the body is provided with an embedding hole, and the connecting tooth is connected in the embedding hole in a key mode.

Through adopting above-mentioned technical scheme, realize the key-type connection through the tooth of connecting the tooth and the inner periphery of caulking hole to make body and connection tooth realize circumference fixed, in order to improve the body and the connection stability who connects the tooth, thereby improve transmission efficiency.

Preferably, the outer diameter of the connecting column is larger than that of the connecting teeth, and the surface of the connecting column close to the connecting teeth is used for the body to abut against.

Through adopting above-mentioned technical scheme, when people realized the key-type connection with body and connection tooth, through locating the periphery of connecting the tooth with the body cover, when the cover was established, when the body butt in the spliced pole, the body was connected with the connection tooth and is accomplished to give people and play a suggestion effect, and the people of being convenient for change the body to the people of being convenient for is whole to be changed the fan.

Preferably, the connecting part further comprises a limiting column and a butting block, the limiting column is coaxially and fixedly connected to one end, away from the connecting column, of the connecting tooth, the butting block is connected to the limiting column in a sliding mode, an included angle is formed between the sliding direction of the butting block and the axial direction of the limiting column, and the diameter of the limiting column is smaller than or equal to that of the embedding hole;

when the abutting block slides to the position that the axial projection of the abutting block and the limiting column along the limiting column is smaller than the area of the embedding hole, the embedding hole is used for allowing the abutting block and the limiting column to penetrate through; when the butt joint block slides to the butt joint block and the limiting column and is greater than the area of the embedding hole along the axial projection of the limiting column, the butt joint block is used for butt towards the surface of the connecting tooth on the body.

Through adopting above-mentioned technical scheme, the body key-type is connected after connecting the tooth, through butt piece butt body, avoids the body to break away from and connects the tooth to improve this body coupling in the connection stability who connects the tooth.

Preferably, still include the elastic component, the elastic component connect in spacing post with between the butt piece, and the flexible direction of elastic component is the same with the slip direction of butt piece.

Through adopting above-mentioned technical scheme, the elastic component takes place the deformation back for the periphery of connecting the tooth can be located to the body cover. After the cover is established, the elastic component makes the butt piece slide to the surface butt of butt piece orientation connection tooth in the body owing to resume the produced elasticity of self deformation to improve the installation effectiveness of body, so that people change the body. And the surface of the abutting block facing the connecting tooth can abut against the body as much as possible through the elasticity of the elastic piece, so that the mounting stability of the body is improved.

Preferably, a groove is formed in the periphery of the limiting column, the elastic piece is located in the groove, one end of the elastic piece is connected into the groove, and the other end of the elastic piece is connected to the abutting block; the groove is used for the abutting block to be embedded in a sliding mode.

Through adopting above-mentioned technical scheme, the recess plays the guide effect for the flexible groove of elastic component for the elastic component is as far as possible along the groove of recess to flexible, makes the produced elasticity of elastic component deformation all be used for making the butt piece slip as far as possible. Simultaneously, the butt piece can slide and imbed to the recess in, the butt piece makes the flexible direction of elastic component stretch out and draw back along the direction of recess as far as to improve the sliding stability of butt piece and the life of elastic component.

Preferably, the surface of the abutting block, which is far away from the connecting tooth, is provided with a guide surface, the distance from any point on the guide surface to the axis of the limiting column is increased along with the point, which is close to the connecting tooth, and the guide surface is used for abutting the body.

Through adopting above-mentioned technical scheme, during the installation body, through body butt spigot surface, continue to apply external force in the body to the direction that is close to the connection tooth for the butt joint piece is along the groove of recess in to the slip embedding recess, so that people connect the body with the connection tooth, thereby people of being convenient for change the fan.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the positioning column is separated from the blind hole, people can take down the fan and replace the new fan, and when the new fan is sleeved on the outer periphery of the motor shaft, the positioning column is embedded into the blind hole again to complete the replacement of the fan, so that the fan is convenient to maintain or replace;

2. the positioning column is in threaded connection with the positioning hole, and the connecting tooth key is connected with the embedded hole, so that the connection stability can be improved;

3. the setting of elastic component for after people installed the body, the butt piece can be under the effect of elastic component elasticity, butt piece self-sliding to butt piece butt body, with improvement people's installation effectiveness.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application

FIG. 2 is a partial view of an embodiment of the present application, primarily to show a fan.

Fig. 3 is an exploded view of an embodiment of the present application.

Fig. 4 is an enlarged view at a in fig. 3.

Description of reference numerals: 1. a machine base; 11. a housing; 12. an end cap; 121. a through hole; 13. sealing the cover; 131. a flow port; 2. a motor shaft; 21. blind holes; 3. a fan; 31. a body; 311. embedding holes; 32. a connecting portion; 321. connecting columns; 3211. mounting holes; 3212. positioning holes; 322. a positioning column; 323. a connecting tooth; 324. a limiting column; 3241. a groove; 325. a butting block; 3251. a guide surface; 5. an elastic member.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Referring to fig. 1 and 2, the embodiment of the present application discloses a permanent magnet motor, which includes a housing 1, a motor shaft 2, and a fan 3, wherein the housing 1 includes a casing 11, two end covers 12, and a cover 13. The housing 11 is similar to a cylinder, and the motor shaft 2 is rotatably connected to the housing 11. Two end covers 12 are respectively fixed connection in casing 11 along self axial both ends, and two end covers 12 all are coaxial to be equipped with through-hole 121, and two through-holes 121 are stretched into respectively at the both ends of motor shaft 2. The periphery of the housing 11 is provided with a threaded hole, a bolt penetrates through the sealing cover 13 and then is connected in the threaded hole in a threaded manner, so that the sealing cover 13 can be detachably connected to the housing 11, an installation space for installing the fan 3 is formed between the sealing cover 13 and the end cover 12, and one end of the motor shaft 2 extends into the through hole 121 and then is located in the installation space. The lid 13 is provided with a flow port 131, and the flow port 131 penetrates the lid 13.

Referring to fig. 2 and 3, the fan 3 includes a body 31 and a connecting portion 32, and the connecting portion 32 further includes a connecting post 321, a positioning post 322, a connecting tooth 323, a limiting post 324, and an abutting block 325. The connecting column 321 is coaxially provided with a mounting hole 3211, the mounting hole 3211 penetrates through the connecting column 321, and the motor shaft 2 is coaxially embedded into the mounting hole 3211, so that the connecting column 321 is sleeved on the periphery of the motor shaft 2. The periphery of motor shaft 2 is equipped with blind hole 21, and the axial of blind hole 21 is perpendicular to the axial of motor shaft 2. The hole wall of the mounting hole 3211 is provided with a positioning hole 3212, the positioning hole 3212 penetrates the connecting column 321 along a direction deviating from an axis of the positioning hole 3212, and an axial direction of the positioning hole 3212 is perpendicular to an axial direction of the mounting hole 3211. The positioning post 322 is provided with threads on its periphery, the positioning post 322 is connected to the positioning hole 3212 by threads, and the positioning post 322 is used to extend into the mounting hole 3211 and to be inserted into the blind hole 21 in a sliding manner.

Referring to fig. 3 and 4, the connecting teeth 323 are coaxially and fixedly connected to the connecting column 321, and the outer diameter of the connecting teeth 323 is smaller than that of the connecting column 321, so that the connecting column 321 is close to the end surface of the connecting teeth 323. The limiting column 324 is coaxially and fixedly connected to one end of the connecting tooth 323 departing from the connecting column 321. The periphery of spacing post 324 is equipped with recess 3241, and permanent-magnet machine still includes elastic component 5, and elastic component 5 is located recess 3241, and the one end of elastic component 5 is connected in the tank bottom of recess 3241, and the other end of elastic component 5 is connected in butt joint piece 325, and butt joint piece 325 slidable imbeds to the recess 3241 in, and butt joint piece 325's slip direction is the same with elastic component 5's flexible direction, and the slip direction perpendicular to spacing post 324's of butt joint piece 325 axial. The surface of the abutment block 325 adjacent to the coupling tooth 323 is flat, and there is a space between the abutment block 325 and the coupling tooth 323. The surface of the abutting block 325 away from the connecting tooth 323 is provided with a guide surface 3251, the distance from any point on the guide surface 3251 to the axis of the limiting column 324 increases as the point approaches the connecting tooth 323, and the guide surface 3251 is used for abutting the body 31. In this embodiment, the elastic member 5 is a spring.

The body 31 is provided with a caulking hole 311, the diameter of the limiting column 324 is smaller than or equal to the diameter of the caulking hole 311, so that the caulking hole 311 is used for the limiting column 324 to pass through, and after the limiting column 324 passes through the caulking hole 311, the caulking hole 311 is used for coaxially embedding the connecting teeth 323 and realizing that the connecting teeth 323 are in key connection in the caulking hole 311. In this embodiment, the diameter of the limiting column 324 is equal to the diameter of the insertion hole 311, and in other embodiments, the diameter of the limiting column 324 may be smaller than the diameter of the insertion hole 311. When the limiting column 324 is just embedded into the embedding hole 311 and the body 31 abuts against the guide surface 3251, the projection area of the abutting block 325 and the limiting column 324 along the axial direction of the limiting column 324 is larger than the area of the embedding hole 311; with the continuous movement of the body 31, when the body 31 presses the guide surface 3251 and the abutting block 325 presses the elastic element 5 and slides into the groove 3241, the area of the axial projection of the abutting block 325 and the limiting column 324 along the limiting column 324 is equal to the area of the axial projection of the limiting column 324 along the limiting column, and the diameter of the limiting column 324 is equal to the diameter of the insertion hole 311, so that the limiting column 324 passes through the insertion hole 311 until the connecting teeth 323 are inserted into the insertion hole 311, and the body 31 abuts against the end surface of the connecting column 321. At this time, the abutting block 325 slides out of the groove 3241 by the elastic member 5, so that the surface of the abutting block 325 near the connecting tooth 323 abuts against the body 31, thereby clamping the body 31 by the connecting column 321 and the abutting block 325.

The implementation principle of the permanent magnet motor in the embodiment of the application is as follows: when the fan 3 is replaced, the cover 13 of the permanent magnet motor is opened. The abutment block 325 is pressed so that the abutment block 325 extends into the groove 3241, at which time the body 31 can be slid out of the connecting tooth 323. If maintenance or replacement of the body 31 is required, after the maintenance or replacement of the body 31, the body 31 is pressed in the axial direction of the stopper column 324 so that the body 31 is connected to the connecting teeth 323 again, thereby completing the replacement of the body 31. If need change connecting portion 32, then revolve and twist reference column 322 for reference column 322 is from blind hole 21 and goes out, takes off spliced pole 321 from motor shaft 2 periphery, maintains or changes connecting portion 32 back, overlaps spliced pole 321 in motor shaft 2 periphery again, and revolves to twist reference column 322 and make reference column 322 imbed to blind hole 21 in, so that accomplish people and maintain the change to body 31 or connecting portion 32, and then be convenient for people to maintain or change fan 3 is whole.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A permanent magnet electric machine characterized by: the motor comprises a base (1), a motor shaft (2) and a fan (3), wherein the motor shaft (2) is rotatably connected to the base (1), and a blind hole (21) is formed in the periphery of the motor shaft (2); the fan (3) is provided with a mounting hole (3211), the mounting hole (3211) is used for coaxially embedding the motor shaft (2), the hole wall of the mounting hole (3211) is provided with a positioning hole (3212), and the positioning hole (3212) penetrates through the fan (3) along the direction deviating from the axis of the positioning hole (3212); positioning columns (322) are embedded into the positioning holes (3212), and the positioning columns (322) extend into the mounting holes (3211) and are embedded into the blind holes (21).

2. The permanent magnet electric machine of claim 1, wherein: the periphery of the positioning column (322) is provided with threads, and the positioning column (322) is in threaded connection with the positioning hole (3212).

3. The permanent magnet electric machine of claim 1, wherein: the fan (3) comprises a body (31) and a connecting part (32), the connecting part (32) is detachably connected to the body (31), and the positioning hole (3212) and the mounting hole (3211) are arranged on the connecting part (32).

4. A permanent magnet electric machine according to claim 3, characterized in that: the connecting part (32) comprises a connecting column (321) and connecting teeth (323), the connecting column (321) is coaxially and fixedly connected to the connecting teeth (323), the positioning hole (3212) and the mounting hole (3211) are both formed in the connecting column (321), and the mounting hole (3211) and the connecting column (321) have the same axial direction; the body (31) is provided with a caulking hole (311), and the connecting teeth (323) are connected in the caulking hole (311) in a key mode.

5. The permanent magnet electric machine of claim 4, wherein: the outer diameter of the connecting column (321) is larger than that of the connecting teeth (323), and the surface, close to the connecting teeth (323), of the connecting column (321) is used for being abutted to the body (31).

6. The permanent magnet electric machine of claim 5, wherein: the connecting portion (32) further comprises a limiting column (324) and a butting block (325), the limiting column (324) is coaxially and fixedly connected to one end, away from the connecting column (321), of the connecting tooth (323), the butting block (325) is connected to the limiting column (324) in a sliding mode, an included angle exists between the sliding direction of the butting block (325) and the axial direction of the limiting column (324), and the diameter of the limiting column (324) is smaller than or equal to that of the embedding hole (311);

when the abutting block (325) slides to the position that the axial projection of the abutting block (325) and the limiting column (324) along the limiting column (324) is smaller than the area of the embedding hole (311), the embedding hole (311) is used for allowing the abutting block (325) and the limiting column (324) to penetrate through; when the abutting block (325) slides to the position where the axial projection of the abutting block (325) and the limiting column (324) along the limiting column (324) is larger than the area of the embedding hole (311), the surface, facing the connecting tooth (323), of the abutting block (325) is used for abutting against the body (31).

7. The permanent magnet electric machine of claim 6, wherein: still include elastic component (5), elastic component (5) connect in spacing post (324) with between butt piece (325), and the flexible direction of elastic component (5) is the same with the slip direction of butt piece (325).

8. The permanent magnet electric machine of claim 7, wherein: a groove (3241) is formed in the periphery of the limiting column (324), the elastic piece (5) is located in the groove (3241), one end of the elastic piece (5) is connected into the groove (3241), and the other end of the elastic piece (5) is connected to the abutting block (325); the groove (3241) is used for the abutting block (325) to be embedded in a sliding mode.

9. The permanent magnet electric machine of claim 8, wherein: the surface of the abutting block (325) far away from the connecting teeth (323) is provided with a guide surface (3251), the distance from any point on the guide surface (3251) to the axis of the limiting column (324) is increased along with the fact that the point is close to the connecting teeth (323), and the guide surface (3251) is used for abutting the body (31).