Motor permanent magnet fixing structure

Abstract

The utility model relates to the technical field of permanent magnets, and discloses a motor permanent magnet fixing structure which comprises a rotor body, connecting plates are slidably connected to the inner walls of the two sides of a connecting frame, permanent magnets are fixedly connected to one sides of the two sets of connecting plates, and connecting rings are fixedly connected to the inner sides of the tops of the permanent magnets. Threaded holes are formed in the surface of the connecting ring and the periphery of the top of the rotor body, the threaded holes of the connecting ring and the threaded holes of the rotor body are equal in size, the top of the connecting ring is in threaded connection with a bolt, and the bottom end of the bolt is in threaded connection with the inner wall of the rotor body. The connecting rings are fixed through the bolts, the permanent magnets can be effectively fixed, the cost of structural materials used for fixing the permanent magnets is low, the overall cost of motor manufacturing is reduced, and the structures for fixing the permanent magnets are all made of iron and stainless steel, so that the abrasion resistance is high, damage caused by friction of the permanent magnets is not prone to occurring, and the service life of the motor is prolonged. Therefore, the fixing time of the permanent magnet is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to permanent magnet technology field, concretely is a motor permanent magnet fixing structure. BACKGROUND

[0002] High -speed motor is widely used in the field of commercial air conditioner, but the poor fixing reliability of rotor permanent magnet and the low tensile strength of permanent magnet restrict, make the existing high -speed motor speed difficult to further speed up, the traditional permanent magnet fixing method generally through carbon fiber binding permanent magnet, but still exist some problems.

[0003] Such as the patent file with the announcement number CN214281158U discloses: "a motor permanent magnet fixing structure relates to permanent magnet field, mainly in order to solve the fixing problem of permanent magnet, the device includes the top plate, the top of top plate is equipped with the first slot, the side of first slot is equipped with the second slot, the vertical direction edge of top plate top is bonded and installed with the gasket, the inside of gasket is inserted and installed with the bolt, the middle part of top plate is equipped with the hole, the side of hole is equipped with the key groove, the bottom of top plate side part is fixedly installed with the outer cover, the bottom of first slot is inserted and installed with the first plugboard, the inside of second slot is inserted and installed with the second plugboard, the embedded groove is equipped between first plugboard, second plugboard, the surface of first plugboard, second plugboard is inserted and installed with carbon fiber, the bottom of carbon fiber is bound and installed with permanent magnet, the bottom of permanent magnet is fixedly installed with bottom plate".

[0004] But the carbon fiber of above -mentioned device when binding and fixing permanent magnet, because carbon fiber needs to consume a large amount of energy when producing, make the use cost of carbon fiber higher, cause the overall cost of motor manufacturing to improve, and the wear resistance of carbon fiber body is poor, make its in the process of fixing permanent magnet, permanent magnet to carbon fiber persistent wear, lead to carbon fiber easily break, lead to the fixing time of permanent magnet to be shorter, therefore need new type's motor permanent magnet fixing structure to solve above -mentioned problem. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of motor permanent magnet fixing structure, to solve the problem that carbon fiber is used in above background technique Higher cost and the wear resistance of carbon fiber body is poor and easily be worn and broken by permanent magnet.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution, disclosing a permanent magnet fixing structure for a motor, comprising: a rotor body, wherein the rotor body is fixedly connected to a connecting frame on all four sides, the horizontal cross-section of the connecting frame is H-shaped, the inner walls on both sides of the connecting frame are slidably connected to connecting plates, one side of two groups of the connecting plates are fixedly connected to a permanent magnet, a connecting ring is fixedly connected to the inner side of the top of the permanent magnet, threaded holes are provided on the surface of the connecting ring and on all four sides of the top of the rotor body, and the threaded holes of the connecting ring are equal in size to the threaded holes of the rotor body, the top of the connecting ring is threadedly connected to a bolt, and the bottom end of the bolt is threadedly connected to the inner wall of the rotor body.

[0007] As a preferred technical solution of the present invention, a first limiting plate is fixedly connected to the outer surface of the connecting frame, a stator winding is fixedly connected to the outer surface of the first limiting plate, and a horizontal longitudinal section of the stator winding is elliptical.

[0008] As a preferred technical solution of the present invention, a second limiting plate is fixedly connected to one side of the stator winding, and the outer surface of the second limiting plate is arc-shaped.

[0009] As a preferred technical solution of the present invention, a connecting collar is fixedly connected to the outer surface of the second limiting plate, and the radius of the inner wall of the connecting collar is the same as the radius of the outer surface of the second limiting plate.

[0010] As an optimal technical solution of the present invention, connecting plates are fixedly connected to the four sides of the connecting ring surface, and the upper and lower ends of the outer side of the connecting plate are both arc-shaped, and the upper and lower sides of the inner wall of the connecting plate are rotatably connected to rotating rods.

[0011] As a preferred technical solution of the present invention, a rotating wheel is fixedly connected to the surface of the rotating rod, and the rotating wheel is made of stainless steel. The surface of the rotating wheel is provided with vertical grooves.

[0012] As a preferred technical solution of the present invention, the horizontal cross-sections of the connecting frame and the connecting plate are both arc-shaped, and the radius of the outer side of the connecting plate is the same as the radius of the inner side of the connecting frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model uses a connecting plate and a connecting ring in combination, slides the connecting plate into the inner wall of the connecting frame, so that the permanent magnet fits the rotor body, and then fixes the connecting ring with bolts. This device can effectively fix the permanent magnet, and the structural material cost used to fix the permanent magnet is low, which reduces the overall cost of motor manufacturing. In addition, the structure for fixing the permanent magnet is made of iron and stainless steel, which has high wear resistance and is not easily damaged by friction of the permanent magnet, thereby extending the fixing time of the permanent magnet.

[0015] 2、The utility model discloses a cooperation of the rotation of the rotation wheel, when installing the motor, the rotation wheel contacts the stator core, makes the connecting ring when rotating, makes the rotation wheel rotate on the surface of the stator core, thereby effectively reduce the friction of the stator core, reduces the wear and tear of the stator core, and then prolongs the service life of the motor whole. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure perspective drawing of the utility model;

[0017] Figure 2 It is the structure perspective drawing of the utility model permanent magnet;

[0018] Figure 3 It is the structure perspective drawing of the utility model connecting plate;

[0019] Figure 4 It is the structure distribution drawing of the utility model rotation wheel;

[0020] Figure 5 It is the structure distribution drawing of the utility model connecting ring.

[0021] In the drawing: 1, rotor body;2, connecting frame;3, connecting plate;4, permanent magnet;5, connecting ring;6, bolt;7, first limit board;8, stator winding;9, second limit board;10, connecting ring;11, link plate;12, rotating rod;13, rotation wheel. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 , a kind of motor permanent magnet fixed structure:

[0024] The utility model relates to a rotor body 1, the four around fixed connection of rotor body 1 has the connecting frame 2, the horizontal cross section of connecting frame 2 is H type, the inner wall of both sides of connecting frame 2 is slidably connected with the connecting plate 3, the one side of two groups of connecting plate 3 is fixedly connected with permanent magnet 4, the inboard of permanent magnet 4 top is fixedly connected with the connecting ring 5, the surface of connecting ring 5 and the four around of rotor body 1 top are equipped with the threaded hole, and the threaded hole of connecting ring 5 and the threaded hole size of rotor body 1 are equal, the top of connecting ring 5 is screwed with bolt 6, and the bottom end of bolt 6 is screwed in the inner wall of rotor body 1.

[0025] When the device is used to fix the permanent magnet 4, the connecting plate 3 is placed on the top of the rotor body 1, then the connecting plate 3 is slid from the slots on the top of the connecting frame 2, at this time, the permanent magnet 4 is attached to the rotor body 1, and the connecting plate 3 is slid to the bottom of the square slot of the connecting frame 2, so that the top of the rotor body 1 and the permanent magnet 4 are at the same horizontal height, then the bolt 6 is placed on the top of the connecting ring 5, the bolt 6 is rotated and inserted into the inner wall of the connecting ring 5, and the bolt 6 is inserted into the inner wall of the rotor body 1 through the connecting ring 5, thereby completing the connection and fixation of the rotor body 1 and the permanent magnet 4.

[0026] Please refer to Figure 1 、 Figure 2 and Figure 4 , the outer surface of the connecting frame 2 is fixedly connected with the first limiting plate 7, the outer surface of the first limiting plate 7 is fixedly connected with the stator winding 8, and the horizontal longitudinal cross section of the stator winding 8 is elliptical, one side of the stator winding 8 is fixedly connected with the second limiting plate 9, the outer surface of the second limiting plate 9 is arc-shaped, the outer surface of the second limiting plate 9 is fixedly connected with the connecting sleeve ring 10, the radius of the inner wall of the connecting sleeve ring 10 is the same as the radius of the outer surface of the second limiting plate 9, the outer surface of the connecting sleeve ring 10 is fixedly connected with the abutment plate 11, the upper and lower ends of the outer side of the abutment plate 11 are circularly arc-shaped, the upper and lower sides of the inner wall of the abutment plate 11 are rotatably connected with the rotating rod 12, the surface of the rotating rod 12 is fixedly connected with the rotating wheel 13, the material of the rotating wheel 13 is stainless steel, and the surface of the rotating wheel 13 is provided with vertical grooves.

[0027] When the device is used to install the rotor body 1, the copper wire is wound around the stator winding 8, and the horizontal longitudinal cross section of the stator winding 8 has no dead angle, so that the copper wire is not easy to be cut and damaged when winding, when the connecting sleeve ring 10 is installed in the motor housing, the rotating wheel 13 contacts the stator core, when the motor is connected to the power supply and rotates, the connecting sleeve ring 10 rotates, the connecting sleeve ring 10 drives the abutment plate 11 on the surface to rotate, the abutment plate 11 drives the rotating rod 12 to rotate, thereby the rotating rod 12 drives the rotating wheel 13 to roll on the surface of the stator core, and the rotating wheel 13 rotates around the rotor body 1.

[0028] The working principle is that the permanent magnet 4 is adhered and slid from the top of the rotor body 1, the connecting plate 3 is inserted into the square groove on the two sides of the connecting frame 2, the permanent magnet 4 is slid and inserted into the top of the rotor body 1 and is in the same horizontal line with the top of the permanent magnet 4, then the bolt 6 is rotated and passed through the top of the connecting ring 5, the bolt 6 is inserted into the inner wall of the rotor body 1, thereby the connection and fixation of the connecting frame 2 and the permanent magnet 4 are completed, the materials of the connecting frame 2, the connecting ring 5, the connecting plate 3 and the bolt 6 are steel, so that the material cost is lower, and the wear resistance of the steel material is higher, and the permanent magnet 4 is not easy to be damaged by friction, thereby the fixation time of the permanent magnet 4 is prolonged, then the connecting sleeve ring 10 and the structure inside the connecting sleeve ring 10 are installed in the motor shell, at this time, the rotor body 1 is in the middle of the inner wall of the motor shell, and the rotating wheel 13 contacts the stator core, so that when the connecting sleeve ring 10 rotates, the rotating wheel 13 rolls on the inner wall of the stator core and does the circular motion around the rotor body 1, wherein the rotation of the rotating wheel 13 reduces the friction with the stator core, thereby reducing the wear of the stator core.

[0029] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments but can be implemented in other embodiments without departing from the scope of the present application. The scope of the application is defined by the appended claims rather than by the description of the exemplary embodiments. Therefore, all changes and modifications that come within the meaning and range of equivalents of the claims are to be embraced by the application. Any reference signs in the claims should not be construed as limiting the claims.

Claims

1. A permanent magnet fixing structure for a motor, comprising: A rotor body (1) is characterized in that: the rotor body (1) is fixedly connected to a connecting frame (2) on all sides, the horizontal cross-section of the connecting frame (2) is H-shaped, the inner walls of both sides of the connecting frame (2) are slidably connected to connecting plates (3), one side of two groups of the connecting plates (3) are fixedly connected to permanent magnets (4), the inner side of the top of the permanent magnet (4) is fixedly connected to a connecting ring (5), the surface of the connecting ring (5) and the top of the rotor body (1) are provided with threaded holes, and the threaded holes of the connecting ring (5) are equal in size to the threaded holes of the rotor body (1), the top of the connecting ring (5) is threadedly connected to a bolt (6), and the bottom end of the bolt (6) is threadedly connected to the inner wall of the rotor body (1).

2. The permanent magnet fixing structure for a motor according to claim 1, characterized in that: A first limiting plate (7) is fixedly connected to the outer surface of the connecting frame (2), a stator winding (8) is fixedly connected to the outer surface of the first limiting plate (7), and a horizontal longitudinal section of the stator winding (8) is elliptical.

3. The permanent magnet fixing structure for a motor according to claim 2, characterized in that: A second limiting plate (9) is fixedly connected to one side of the stator winding (8), and the outer surface of the second limiting plate (9) is arc-shaped.

4. The permanent magnet fixing structure for a motor according to claim 3, characterized in that: A connecting collar (10) is fixedly connected to the outer surface of the second limiting plate (9), and the radius of the inner wall of the connecting collar (10) is the same as the radius of the outer surface of the second limiting plate (9).

5. The permanent magnet fixing structure for a motor according to claim 4, characterized in that: The connecting ring (10) is fixedly connected to a connecting plate (11) on all four sides of its surface, and the upper and lower ends of the outer side of the connecting plate (11) are both arc-shaped, and the upper and lower sides of the inner wall of the connecting plate (11) are rotatably connected to a rotating rod (12).

6. The permanent magnet fixing structure for a motor according to claim 5, characterized in that: A rotating wheel (13) is fixedly connected to the surface of the rotating rod (12), and the rotating wheel (13) is made of stainless steel. The surface of the rotating wheel (13) is provided with vertical grooves.

7. The permanent magnet fixing structure for a motor according to claim 1, characterized in that: The horizontal cross-sections of the connecting frame (2) and the connecting plate (3) are both arc-shaped, and the radius of the outer side of the connecting plate (3) is the same as the radius of the inner side of the connecting frame (2).

Images