CN113113993B - Permanent magnet motor with special magnetic field structure - Google Patents

Abstract

The invention relates to the technical field of motors and discloses a permanent magnet motor with a special magnetic field structure, which comprises a shell, wherein one side of the shell is fixedly provided with a mounting cover through a bolt, an inner cavity of the shell is provided with a rotor core, the other side of the shell is provided with a heat dissipation port, the outer side of the rotor core is provided with a stator, and one side and the outer side of the rotor core are respectively provided with a connecting port and a placing groove. The permanent magnet motor with the special magnetic field structure is connected with the S-level and the N-level of the permanent magnet through the rotor core by using the fixing plate, the connecting plate, the spring and the plugboard, the connecting plate is clamped in the inner cavity of the clamping groove conveniently, the S-level and the N-level of the permanent magnet are fixed on the outer side of the rotor core by using the elasticity of the spring, and the moving ring drives the fixing plate to move, so that the clamping groove and the connecting plate are separated, the limitation on the S-level and the N-level of the permanent magnet is relieved, and the S-level and the N-level of the permanent magnet are detached from the rotor core conveniently.

Description

A permanent magnet motor with a special magnetic field structure

Technical Field

The invention relates to the technical field of motors, and in particular to a permanent magnet motor with a special magnetic field structure.

Background technique

Permanent magnet motors (PMMs) generate torque through the interaction of stator current with permanent magnets on or within the rotor. Surface rotor magnets are common in small, low-power motors used in IT equipment, business machines, and automotive auxiliary equipment, while internal magnets (IPMs) are common in larger machines such as electric vehicles and industrial motors.

The rotor core on the existing permanent magnet motor with a special magnetic field structure is fixedly connected to the permanent magnet S stage and the permanent magnet N stage respectively. However, after long-term use, the magnetic field generated by the permanent magnet S stage and the permanent magnet N stage of the permanent magnet motor with a special magnetic field structure will weaken, and it is necessary to replace the permanent magnet S stage and the permanent magnet N stage in the permanent magnet motor with a special magnetic field structure, and replace the rotor core together, thereby causing a waste of resources and increasing the cost of use.

Summary of the invention

The present invention provides a permanent magnet motor with a special magnetic field structure, which has the advantage of being easy to replace and connect the rotor core with the permanent magnet S level and the permanent magnet N level, respectively, and solves the problems mentioned in the above background technology.

The present invention provides the following technical solution: a permanent magnet motor with a special magnetic field structure, comprising a shell, a mounting cover is fixedly installed on one side of the shell by bolts, a rotor core is arranged in the inner cavity of the shell, a heat dissipation port is opened on the other side of the shell, a stator is arranged on the outer side of the rotor core, a connection port and a placement slot are respectively opened on one side and the outer side of the rotor core, a permanent magnet S level and a permanent magnet N level are respectively movably connected to the outer side of the rotor core, a plug plate located in the inner cavity of the connection port is fixedly installed on the inner side of the permanent magnet S level and the inner side of the permanent magnet N level, a telescopic rod is fixedly installed on the inner side of the plug plate, a connecting plate is fixedly installed on one end of the connecting plate, a spring is movably sleeved on the outer side of the telescopic rod, and two ends of the spring are respectively fixedly installed on the inner side of the plug plate and the outer side of the connecting plate, a ring is movably sleeved on the inner wall of the inner cavity of the placement slot, a fixing plate is fixedly installed on one side of the ring, a card slot is opened on the inner side of the fixing plate, and a connecting plate is movably sleeved in the inner cavity of the card slot.

Preferably, pull rods are fixedly mounted on the upper and lower sides of the other side of the circular ring, and the inner wall of the circular ring contacts the inner wall of the inner cavity of the placement groove.

Preferably, a cooling tube is fixedly sleeved inside the rotor core, a disc is fixedly sleeved on one side of the cooling tube, and the outer side of the disc is movably sleeved on the center of the other side of the shell.

Preferably, the upper and lower sides of the other side of the circular ring are both U-shaped, and both ends of the circular ring are located outside the shell.

Preferably, a rotating shaft is movably sleeved on the other side of the inner cavity of the shell, a first gear is fixedly sleeved on one side of the rotating shaft, a second gear is fixedly sleeved on one side of the rotor core, the outer teeth of the first gear and the outer teeth of the first gear are meshed with each other, and fan blades are fixedly sleeved on the other side of the rotating shaft and one side of the rotor core.

Preferably, the number of the first gears and the number of the rotating shafts are three, and the three first gears and the three rotating shafts are evenly distributed on the outer side of the second gear.

Preferably, springs and telescopic rods are provided on the upper and lower sides of the plug plate, and the springs are in a stretched state when the connecting plate is located in the inner cavity of the card slot.

Preferably, two edges of the fixing plate on one side of the connecting plate are both rounded.

The present invention has the following beneficial effects:

1. The permanent magnet motor with the special magnetic field structure is connected to the permanent magnet S level and the permanent magnet N level through the rotor core by means of a fixing plate, a connecting plate, a spring and a plug plate, so that the connecting plate is conveniently clamped in the inner cavity of the card slot, and the permanent magnet S level and the permanent magnet N level are fixed on the outer side of the rotor core by means of the elastic force of the spring, and the moving ring drives the fixing plate to move, so that the card slot and the connecting plate are separated, and the restriction on the permanent magnet S level and the permanent magnet N level is released, so that the permanent magnet S level and the permanent magnet N level are conveniently removed from the rotor core.

2. The permanent magnet motor with a special magnetic field structure is provided with a cooling pipe inside the rotor core, so that the other end of the cooling pipe can be connected to the external coolant to dissipate heat and cool the inside of the rotor core, thereby avoiding excessive internal temperature of the rotor core and affecting the service life of the rotor core.

3. The permanent magnet motor with a special magnetic field structure is provided with a second gear on the outside of the rotor core. Due to the meshing between the first gear and the second gear, the shaft is driven to rotate. When the rotor core is running, the fan blades on the rotor core and the fan blades on the shaft can rotate, which can generate wind flow in the inner cavity of the shell, facilitate heat dissipation inside the shell, and improve the service life of this permanent magnet motor.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the present invention;

FIG2 is a schematic side view of the three-dimensional structure of the present invention;

FIG3 is a schematic diagram of an exploded three-dimensional structure between a rotor core and a stator according to the present invention;

FIG4 is a schematic diagram of an exploded three-dimensional structure between the rotor core and the ring of the present invention;

FIG5 is a schematic diagram of a three-dimensional structure of a spring according to the present invention;

FIG. 6 is a schematic diagram of the three-dimensional structure of the second gear of the present invention.

In the figure: 1. shell; 2. mounting cover; 3. rotor core; 4. heat dissipation port; 5. stator; 6. connection port; 7. permanent magnet S level; 8. permanent magnet N level; 9. placement slot; 10. telescopic rod; 11. connecting plate; 12. spring; 13. ring; 14. fixing plate; 15. slot; 16. pull rod; 17. cooling pipe; 18. disc; 19. rotating shaft; 20. first gear; 21. second gear; 22. fan blade; 23. plug-in plate.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1-6, a permanent magnet motor with a special magnetic field structure includes a shell 1, a rotating shaft 19 is movably sleeved on the other side of the inner cavity of the shell 1, a first gear 20 is fixedly sleeved on one side of the rotating shaft 19, a second gear 21 is fixedly sleeved on one side of the rotor core 3, the outer teeth of the first gear 20 and the outer teeth of the first gear 20 are meshed with each other, and blades 22 are fixedly sleeved on the other side of the rotating shaft 19 and one side of the rotor core 3. The second gear 21 is provided on the outer side of the rotor core 3. Due to the meshing between the first gear 20 and the second gear 21, the rotating shaft 19 is driven to rotate. When the rotor core 3 is running, the blades 22 on the rotor core 3 and the blades 22 on the rotating shaft 19 can both rotate, which can generate wind flow in the inner cavity of the shell 1, facilitate heat dissipation treatment of the interior of the shell 1, and improve the service life of this permanent magnet motor. The number of the first gear 20 and the rotating shaft 19 are both three The three first gears 20 and the three rotating shafts 19 are evenly distributed on the outside of the second gear 21. The first gears 20 and the rotating shafts 19 are evenly arranged on the outside of the second gear 21, so as to improve the efficiency of heat dissipation inside the shell 1. A mounting cover 2 is fixedly installed on one side of the shell 1 by bolts. A rotor core 3 is arranged in the inner cavity of the shell 1. A cooling pipe 17 is fixedly sleeved inside the rotor core 3. A disc 18 is fixedly sleeved on one side of the cooling pipe 17. The outer side of the disc 18 is movably sleeved on the center of the other side of the shell 1. A cooling pipe 17 is arranged inside the rotor core 3, so that the other end of the cooling pipe 17 is connected to the external coolant to dissipate heat and cool the inside of the rotor core 3, thereby avoiding excessive internal temperature of the rotor core 3 and affecting the service life of the rotor core 3. A heat dissipation port 4 is opened on the other side of the shell 1. A stator 5 is arranged on the outside of the rotor core 3. One side and A connecting port 6 and a placement slot 9 are respectively provided on the outside, and a permanent magnet S-level 7 and a permanent magnet N-level 8 are movably connected to the outside of the rotor core 3. The inner side of the permanent magnet S-level 7 and the inner side of the permanent magnet N-level 8 are fixedly installed with a plug plate 23 located in the inner cavity of the connecting port 6. Springs 12 and telescopic rods 10 are provided on the upper and lower sides of the plug plate 23. When the connecting plate 11 is located in the inner cavity of the card slot 15, the spring 12 is in a stretched state. The springs 12 and telescopic rods 10 are provided on the upper and lower sides of the plug plate 23, thereby improving the stability of the connection between the plug plate 23 and the connecting plate 11. The telescopic rod 10 is fixedly installed on the inner side of the plug plate 23, and the connecting plate 11 is fixedly installed on one end of the connecting plate 11. The outer side of the telescopic rod 10 is movably sleeved with a spring 12, and the two ends of the spring 12 are respectively fixedly installed on the inner side of the plug plate 23 and the outer side of the connecting plate 11. The inner wall of the inner cavity of the placement slot 9 is movably sleeved with a ring 13, and the ring 1 The upper and lower sides of the other side of the circular ring 13 are fixedly installed with a pull rod 16. The inner wall of the circular ring 13 contacts the inner wall of the inner cavity of the placement groove 9. The pull rod 16 is provided on the other side of the circular ring 13, so that the circular ring 13 can be controlled to move in the inner cavity of the placement groove 9 by using the pull rod 16. The upper and lower sides of the other side of the circular ring 13 are both in a U shape. Both ends of the circular ring 13 are located on the outside of the housing 1. The upper and lower sides of the other side of the circular ring 13 are both in a U shape, which increases the cooling area of the inside of the rotor core 3. A fixing plate 14 is fixedly installed on one side of the circular ring 13. The two edges of the fixing plate 14 on one side of the connecting plate 11 are both rounded. The two edges of the fixing plate 14 on one side of the connecting plate 11 are both rounded, which facilitates the connecting plate 11 to enter and move out of the inner cavity of the card slot 15. The inner side of the fixing plate 14 is provided with a card slot 15, and the inner cavity of the card slot 15 is movably sleeved with the connecting plate 11.

Working principle: by pushing the pull rod 16, the fixing plate 14 and the slot 15 are pushed toward the connecting plate 11, so that the connecting plate 11 enters the inner cavity of the slot 15. Since the connecting plate 11 is located in the inner cavity of the slot 15, the spring 12 is in a stretched state, so that the inner side of the permanent magnet S level 7 and the inner side of the permanent magnet N level 8 are tightly fitted with the outer side of the rotor core 3, so that the permanent magnet S level 7 and the permanent magnet N level 8 are respectively connected to the rotor core 3 more stably. By pulling the pull rod 16, the slot 15 and the connecting plate 11 are separated, and the restriction on the connecting plate 11 is released, and the permanent magnet S level 7 and the outer side of the permanent magnet N stage 8 are removed, and the permanent magnet S stage 7 and the permanent magnet N stage 8 can be replaced. By connecting one end of the cooling tube 17 to the external coolant, the coolant enters the interior of the rotor core 3 from one end of the cooling tube 17 and is discharged through the other end of the cooling tube 17 to cool the interior of the rotor core 3. When the rotor core 3 is running, it drives the second gear 21 to rotate. Due to the engagement between the first gear 20 and the second gear 21, the fan blades 22 on the rotor core 3 and the fan blades 22 on the rotating shaft 19 are driven to rotate, so that the interior of the shell 1 can be cooled.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a permanent magnet motor of special magnetic field structure, includes casing (1), its characterized in that: one side of casing (1) is through bolt fixed mounting has installation lid (2), the inner chamber of casing (1) is equipped with rotor core (3), heat dissipation mouth (4) have been seted up to the opposite side of casing (1), the outside of rotor core (3) is equipped with stator (5), connector (6) and standing groove (9) have been seted up respectively in one side and the outside of rotor core (3), the outside of rotor core (3) swing joint has permanent magnet S level (7) and permanent magnet N level (8) respectively, the inboard of permanent magnet S level (7) and the inboard of permanent magnet N level (8) all fixed mounting have picture peg (23) that are located connector (6) inner chamber, the inboard fixed mounting of picture peg (23) has telescopic link (10), the one end fixed mounting of connecting plate (11), the outside activity of telescopic link (10) has cup jointed spring (12), the both ends of spring (12) are fixed mounting respectively on the outside of the inboard of picture peg (23) and connecting plate (11), the inboard of standing groove (9) inner wall inner chamber (8) has picture peg (13), fixed ring (14) are equipped with fixed slot (14), the inner cavity of the clamping groove (15) is movably sleeved with the connecting plate (11), the upper side and the lower side of the inserting plate (23) are respectively provided with the spring (12) and the telescopic rod (10), and the spring (12) is in a stretching state when the connecting plate (11) is positioned in the inner cavity of the clamping groove (15).

2. A permanent magnet machine of a special field configuration according to claim 1, characterized in that: the upper side and the lower side of the other side of the circular ring (13) are fixedly provided with pull rods (16), and the inner wall of the circular ring (13) is in contact with the inner wall of the inner cavity of the placing groove (9).

3. A permanent magnet machine of a special field configuration according to claim 1, characterized in that: the rotor core (3) is characterized in that a cooling pipe (17) is fixedly sleeved in the rotor core (3), a disc (18) is fixedly sleeved on one side of the cooling pipe (17), and the outer side of the disc (18) is movably sleeved on the center of the other side of the shell (1).

4. A permanent magnet machine according to claim 3, characterized in that: the upper side and the lower side of the other side of the circular ring (13) are U-shaped, and both ends of the circular ring (13) are positioned on the outer side of the shell (1).

5. A permanent magnet machine of a special field configuration according to claim 1, characterized in that: the rotary shaft (19) has been cup jointed in the opposite side activity of casing (1) inner chamber, first gear (20) has been cup jointed in the fixed one side of pivot (19), second gear (21) has been cup jointed in the fixed one side of rotor core (3), the external tooth of first gear (20) and the external tooth intermeshing of first gear (20), flabellum (22) have all been cup jointed in the opposite side of pivot (19) and one side of rotor core (3) fixedly.

6. The permanent magnet motor of claim 5, wherein: the number of the first gears (20) and the rotating shafts (19) is three, and the three first gears (20) and the three rotating shafts (19) are uniformly distributed on the outer sides of the second gears (21).

7. A permanent magnet machine of a special field configuration according to claim 1, characterized in that: two edges of the fixing plate (14) positioned on one side of the connecting plate (11) are in round corner shapes.