Embedded permanent magnet synchronous motor rotor and stator

Abstract

The utility model belongs to the technical field of embedded permanent magnet synchronous motors, and particularly relates to an embedded permanent magnet synchronous motor rotor and stator, which comprises a stator iron core and a rotor iron core, the inner wall of the stator iron core is fixedly connected with a stator winding, the rotor iron core is positioned in the stator iron core, and the inner wall of the rotor iron core is fixedly connected with a stator winding. A rotating shaft is fixedly connected to the inner wall of the rotor core, a through hole is formed in the rotor core, and a permanent magnet is attached to the inner wall of the through hole. According to the embedded permanent magnet synchronous motor rotor and stator, the permanent magnet can be fixed in the through hole through cooperation of the pressing block, the limiting plate, the hollow circular plate, the protruding block, the first circular hole, the threaded cylinder, the second circular hole and the fixing bolt, and meanwhile when the permanent magnet is disassembled, the pressing block can slide in the through hole, and the longitudinal section of the through hole is larger than that of the permanent magnet, so that the permanent magnet can be disassembled conveniently. And therefore, the permanent magnet cannot be clamped in the through hole, and a user can replace the permanent magnet more conveniently.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of built-in permanent magnet synchronous motor, concretely relates to a built-in permanent magnet synchronous motor rotor stator. BACKGROUND

[0002] The built-in permanent magnet synchronous motor is a kind of permanent magnet synchronous motor. Its permanent magnet is embedded in the motor rotor, and the rotating magnetic field generated by the stator winding interacts with the rotor permanent magnet magnetic field, so that the motor rotates, and the conversion from electric energy to mechanical energy is realized.

[0003] At present, the built-in permanent magnet synchronous motor rotor stator is mainly composed of stator core, stator winding, rotor core, permanent magnet and rotating shaft, wherein the rotor core is fixed on the rotating shaft, the permanent magnet is embedded in the rotor core, and the stator winding is fixed in the stator core. However, when replacing the permanent magnet in the rotor core, the permanent magnet embedded in the rotor core is easy to be stuck in the rotor core, which causes the maintenance personnel to be more troublesome when replacing the permanent magnet. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of built-in permanent magnet synchronous motor rotor stator, solve the problem that when replacing the permanent magnet in the rotor core, the permanent magnet embedded in the rotor core is easy to be stuck in the rotor core, which causes the maintenance personnel to be more troublesome when replacing the permanent magnet.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A kind of built-in permanent magnet synchronous motor rotor stator, including stator core and rotor core, the inner wall of the stator core is fixedly connected with stator winding, the rotor core is located in stator core, the inner wall of the rotor core is fixedly connected with rotating shaft, the inside of the rotor core is provided with through hole, the inner wall of the through hole is attached with permanent magnet, the surface of the permanent magnet and the inner wall of the through hole are attached with pressing block, the left and right sides of the pressing block are fixedly connected with limit plate, the left and right sides of the rotor core are attached with the side surface of limit plate, the surface of the limit plate, the surface of rotating shaft and the left and right sides of the rotor core are attached with hollow round plate, the surface of the hollow round plate is fixedly connected with lug, the surface of the lug is attached with the surface of limit plate, the inside of the rotor core is provided with first circular hole, the inner wall of the first circular hole is fixedly connected with threaded cylinder, the inside of the hollow round plate is provided with second circular hole, the inner wall of the second circular hole is attached with fixed bolt, the surface of the fixed bolt is threadedly connected with the inner wall of threaded cylinder.

[0007] The utility model is further provided with reinforcing block fixedly connected with the left and right sides of the pressing block, and the surface of the reinforcing block is fixedly connected with the surface of the limit plate.

[0008] The utility model further sets up, the left and right sides of hollow round board all are pasted with limit ring, the inner wall of limit ring is fixedly connected with the surface of pivot.

[0009] The utility model further sets up, the upper surface of limit ring is equipped with recess, the side surface of hollow round board is fixedly connected with cylinder, the surface of cylinder is fixedly connected with baffle ring, the side surface of baffle ring, the surface of cylinder and the side surface of hollow round board all are pasted with stopper, the surface of stopper is pasted with the inner wall of recess.

[0010] The utility model further sets up, the gravity of stopper is greater than the sum of friction between stopper, cylinder, baffle ring and hollow round board.

[0011] The utility model further sets up, the side surface of hollow round board and the surface of fixed bolt all are pasted with rubber ring.

[0012] The utility model discloses a kind of technical effects for:

[0013] The utility model discloses a kind of embedded permanent magnet synchronous motor rotor stator, which is fixed on the rotor core by the cooperation of the fixing bolt and the threaded cylinder. When the hollow round plate is fixed on the rotor core, the pressing block is pressed against the permanent magnet through the cooperation of the protruding block and the limiting plate, and the permanent magnet is fixed in the through hole through the extrusion force. When the fixing bolt is separated from the threaded cylinder, the pressing block no longer presses the permanent magnet by rotating the hollow round plate. Since the longitudinal section of the through hole is larger than the longitudinal section of the permanent magnet, the permanent magnet will not be stuck in the through hole, so that the user can replace the permanent magnet more conveniently.

[0014] The utility model discloses a kind of embedded permanent magnet synchronous motor rotor stator, which is fixed on the rotor core by the cooperation of the fixing bolt and the threaded cylinder. When the hollow round plate is fixed on the rotor core, the pressing block is pressed against the permanent magnet through the cooperation of the protruding block and the limiting plate, and the permanent magnet is fixed in the through hole through the extrusion force. When the fixing bolt is separated from the threaded cylinder, the pressing block no longer presses the permanent magnet by rotating the hollow round plate. Since the longitudinal section of the through hole is larger than the longitudinal section of the permanent magnet, the permanent magnet will not be stuck in the through hole, so that the user can replace the permanent magnet more conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional schematic view of the structure of the utility model;

[0016] Figure 2 It is Figure 1 the enlarged view of A in figure;

[0017] Figure 3 It is the side view of the structure of the utility model;

[0018] Figure 4 is Figure 3 enlarged view of B in the middle;

[0019] Figure 5 is Figure 3 sectional view of C-C in the middle;

[0020] Figure 6 is Figure 5 enlarged view of D in the middle;

[0021] Figure 7 is the side view of the rotor core in the utility model;

[0022] Figure 8 is the side view of the hollow round plate in the utility model;

[0023] Figure 9 is the side view of the stop rod in the utility model.

[0024] In the drawings, the components represented by each reference numeral are listed as follows:

[0025] 1, stator core; 2, rotor core; 3, stator winding; 4, rotating shaft; 5, through hole; 6, permanent magnet; 7, pressing block; 8, limiting plate; 9, hollow round plate; 10, protruding block; 11, first circular hole; 12, threaded cylinder; 13, second circular hole; 14, fixing bolt; 15, reinforcing block; 16, limiting ring; 17, recess; 18, cylinder; 19, stop ring; 20, stop rod; 21, rubber ring. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, easy to understand, the specific implementation of the utility model is described in detail below with the help of the drawings in the specification.

[0027] In the following description, a lot of specific details are set forth in order to give a full and complete understanding of the present application, but the present application can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0028] As Figures 1 to 8As shown, a built-in permanent magnet synchronous motor rotor stator, including a stator core 1 and rotor core 2, the inner wall of the stator core 1 is fixedly connected with stator winding 3, the rotor core 2 is located in the stator core 1, the inner wall of the rotor core 2 is fixedly connected with the rotating shaft 4, the inside of the rotor core 2 is provided with a through hole 5, the inner wall of the through hole 5 is provided with a permanent magnet 6, the surface of the permanent magnet 6 and the inner wall of the through hole 5 are provided with a pressing block 7, the left and right sides of the pressing block 7 are fixedly connected with a limiting plate 8, the left and right sides of the rotor core 2 are combined with the side surface of the limiting plate 8, the surface of the limiting plate 8, the surface of the rotating shaft 4 and the left and right sides of the rotor core 2 are provided with a hollow circular plate 9, the surface of the hollow circular plate 9 is fixedly connected with a convex block 10, the surface of the convex block 10 is combined with the surface of the limiting plate 8, the inside of the rotor core 2 is provided with a first circular hole 11, the inner wall of the first circular hole 11 is fixedly connected with a threaded cylinder 12, the inside of the hollow circular plate 9 is provided with a second circular hole 13, the inner wall of the second circular hole 13 is provided with a fixed bolt 14, the surface of the fixed bolt 14 is threadedly connected with the inner wall of the threaded cylinder 12.

[0029] It should be noted that the limiting plate 8 makes the pressing block 7 unable to move left and right in the through hole 5, when the fixed bolt 14 is inserted into the second circular hole 13 and screwed into the threaded cylinder 12, the hollow circular plate 9 can be fixed on the rotor core 2 by the cooperation of the fixed bolt 14 and the threaded cylinder 12, and the pressing block 7 can press the permanent magnet 6 by the cooperation of the convex block 10 and the limiting plate 8, and the permanent magnet 6 can be fixed in the through hole 5 by the extrusion force, at the same time, when the fixed bolt 14 is separated from the threaded cylinder 12, the pressing block 7 no longer presses the permanent magnet 6 by rotating the hollow circular plate 9, and because the longitudinal section of the through hole 5 is larger than the longitudinal section of the permanent magnet 6, the permanent magnet 6 will not be stuck in the through hole 5.

[0030] As shown in Figures 1 to 6 The left and right sides of the pressing block 7 are fixedly connected with a reinforcing block 15, the surface of the reinforcing block 15 is fixedly connected with the surface of the limiting plate 8, and the limiting plate 8 and the pressing block 7 are more firmly fixed by the reinforcing block 15.

[0031] As shown in Figures 1 to 9 The left and right sides of the hollow circular plate 9 are provided with a limiting ring 16, the inner wall of the limiting ring 16 is fixedly connected with the surface of the rotating shaft 4, the upper surface of the limiting ring 16 is provided with a groove 17, the side surface of the hollow circular plate 9 is fixedly connected with a cylinder 18, the surface of the cylinder 18 is fixedly connected with a stop ring 19, the side surface of the stop ring 19, the surface of the cylinder 18 and the side surface of the hollow circular plate 9 are provided with a stop rod 20, the surface of the stop rod 20 is combined with the inner wall of the groove 17.

[0032] Among them, the gravity of the stop rod 20 is greater than the sum of the friction between the stop rod 20 and the cylinder 18, the stop ring 19 and the hollow circular plate 9.

[0033] It should be noted that the hollow circular plate 9 is secured between the limiting ring 16 and the rotor core 2 by the limiting ring 16, and the stop rod 20 is secured on the cylinder 18 by the retaining ring 19. The stop rod 20 can rotate freely on the cylinder 18. When the hollow circular plate 9 rotates clockwise, the stop rod 20 can slide directly out of the groove 17 through the inclined surface on the groove 17. When the hollow circular plate 9 rotates counterclockwise, the stop rod 20 first automatically enters the groove 17 by its own gravity. When the stop rod 20 contacts the vertical surface of the groove 17, the cooperation between the stop rod 20 and the groove 17 prevents the hollow circular plate 9 from continuing to rotate counterclockwise, and aligns the second circular hole 13 on the hollow circular plate 9 with the threaded cylinder 12.

[0034] like Figures 1 to 6 As shown, rubber rings 21 are attached to both the side of the hollow circular plate 9 and the surface of the fixing bolt 14. When the fixing bolt 14 is screwed into the threaded cylinder 12, the friction between the fixing bolt 14 and the rubber ring 21 makes the fixing bolt 14 less likely to loosen.

[0035] During the assembly of the motor rotor and stator: first, the permanent magnet 6 is inserted into the through hole 5. Then, by rotating the hollow circular plate 9, the second circular hole 13 on the hollow circular plate 9 is aligned with the threaded cylinder 12. Next, the fixing bolt 14 is inserted into the second circular hole 13 and screwed into the threaded cylinder 12. At this time, the hollow circular plate 9 is fixed by the cooperation of the fixing bolt 14 and the threaded cylinder 12. Then, by the cooperation of the protrusion 10 and the limiting plate 8, the pressure block 7 squeezes the permanent magnet 6 and fixes the permanent magnet 6 in the through hole 5 by the squeezing force.

[0036] When it is necessary to disassemble the permanent magnet 6, first unscrew the fixing bolt 14 from the threaded cylinder 12. Then, by rotating the hollow circular plate 9, the protrusion 10 is rotated at a certain angle, and the pressure block 7 is no longer pressing on the permanent magnet 6. At this time, since the longitudinal section of the through hole 5 is larger than the longitudinal section of the permanent magnet 6, the permanent magnet 6 can be smoothly moved out of the through hole 5.

[0037] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An interior permanent magnet synchronous motor rotor-stator, characterized by: The utility model relates to a kind of permanent magnet synchronous motor, including stator core (1) and rotor core (2), the inner wall of the stator core (1) is fixedly connected with stator winding (3), the rotor core (2) is located in stator core (1), the inner wall of the rotor core (2) is fixedly connected with rotating shaft (4), the inside of the rotor core (2) is equipped with through hole (5), the inner wall of the through hole (5) is in contact with permanent magnet (6) and is set, the surface of permanent magnet (6) and the inner wall of through hole (5) are in contact with pressure block (7) and are set, the left and right sides of pressure block (7) are fixedly connected with limit plate (8), the left and right sides of the rotor core (2) are in contact with the side of limit plate (8), the surface of limit plate (8), the surface of rotating shaft (4) and the left and right sides of the rotor core (2) are in contact with hollow round plate (9) and are set, the surface of hollow round plate (9) is fixedly connected with lug (10), the surface of lug (10) is in contact with the surface of limit plate (8), the inside of the rotor core (2) is equipped with first circular hole (11), the inner wall of first circular hole (11) is fixedly connected with threaded cylinder (12), the inside of hollow round plate (9) is equipped with second circular hole (13), the inner wall of second circular hole (13) is in contact with fixed bolt (14) and is set, the surface of fixed bolt (14) is in threaded connection with the inner wall of threaded cylinder (12).

2. An interior permanent magnet synchronous motor rotor-stator according to claim 1, characterized in that: The left and right sides of the pressure block (7) are fixedly connected with reinforcing block (15), and the surface of the reinforcing block (15) is fixedly connected with the surface of the limit plate (8).

3. The interior-embedded permanent magnet synchronous motor rotor-stator of claim 1, wherein: The left and right sides of the hollow round plate (9) are in contact with limit ring (16) and are set, and the inner wall of the limit ring (16) is fixedly connected with the surface of the rotating shaft (4).

4. An interior permanent magnet synchronous motor rotor-stator according to claim 3, characterized in that: The upper surface of the limit ring (16) is provided with a groove (17), the side surface of the hollow round plate (9) is fixedly connected with a cylinder (18), the surface of the cylinder (18) is fixedly connected with a stop ring (19), the side surface of the stop ring (19), the surface of the cylinder (18) and the side surface of the hollow round plate (9) are in contact with a stop rod (20), and the surface of the stop rod (20) is in contact with the inner wall of the groove (17).

5. An interior permanent magnet synchronous motor rotor-stator according to claim 4, characterized in that: The gravity of the stop rod (20) is greater than the sum of the frictional forces between the stop rod (20) and the cylinder (18), the stop ring (19) and the hollow round plate (9).

6. An interior permanent magnet synchronous motor rotor-stator according to claim 1, characterized in that: The side surface of the hollow round plate (9) and the surface of the fixed bolt (14) are in contact with a rubber ring (21).

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