Motor and rotor protection structure thereof

Abstract

The utility model relates to the technical field of motor equipment, in particular to a motor and a rotor protection structure thereof, which comprises a motor body and further comprises a combined rotor arranged in the motor body. The cooling assembly is arranged on one side of the combined rotor and the motor body; the cooling assembly is arranged on one side of the combined rotor and the motor body, the connecting assembly is arranged on the other side of the combined rotor and the motor body, and connection between the combined rotor and the motor body is achieved through the connecting assembly. Air entering the motor body is quickly and averagely distributed to the periphery of the combined rotor by using the cooling assembly, so that the air flows more smoothly, heat dissipation fins on the combined rotor can better dissipate heat, the heat dissipation efficiency of the motor body is improved, and the over-temperature phenomenon of the motor body is avoided; and the rotor body can be further protected through a telescopic spring, a limiting pile and a limiting groove, so that the rotor body can be buffered when being impacted by external force, and the impact force is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a motor and a rotor protection structure thereof. Background Art

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It is widely used in the electric power industry, machinery manufacturing, transportation and other fields. Its main structure includes rotor, stator, end cover, bearings, fan and other components.

[0003] The rotor of a brushless DC motor is composed of permanent magnets with a certain number of pole pairs embedded on the surface of an iron core or embedded inside the iron core. Permanent magnets are mostly made of rare earth permanent magnet materials with high coercivity and high magnetic induction density, such as neodymium iron boron. When the motor is working, a large amount of heat energy will be generated inside it. If the heat cannot be dissipated, the temperature will continue to rise. The motor rotor in the prior art is provided with fans on both the front and rear sides. The fans can flow external air into the motor and take away heat and moisture through the fans. However, the fans in the prior art have a single structure and a general heat dissipation effect. When the temperature inside the motor rises rapidly due to an unexpected situation, they cannot effectively dissipate heat. For this reason, we propose a motor and its rotor protection structure. Utility Model Content

[0004] A technical problem to be solved by the present application is that the heat dissipation efficiency of the fan on the motor rotor in the prior art needs to be improved.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a motor and a rotor protection structure thereof, including a motor body, and also including:

[0006] A combined rotor, wherein the combined rotor is arranged inside the motor body;

[0007] A cooling component, which is arranged on one side of the combined rotor and the motor body, and through which the heat generated between the motor body and the combined rotor is further reduced;

[0008] A connecting component is arranged on the other side of the combined rotor and the motor body, and the connection between the combined rotor and the motor body is achieved through the connecting component.

[0009] In some embodiments, the interior of the motor body is hollow, the combined rotor includes a rotor body, fixing rings are fixedly provided at both ends of the rotor body, and a plurality of cooling fins are fixedly provided on one side of the fixing ring.

[0010] In some embodiments, the heat dissipation fins are arranged in a circular shape, and the heat dissipation fins are arranged in an inclined shape.

[0011] In some embodiments, the cooling component includes a protective plate, a main shaft is rotatably connected at the center of the protective plate, an impeller is disposed on one side of the protective plate, and a plurality of heat dissipation holes are opened on the protective plate.

[0012] In some embodiments, the protective plate is rotatably disposed at one end of the motor body, one end of the main shaft is fixedly connected to the rotor body, the impeller is circularly disposed, and the heat dissipation hole is disposed between the main shaft and the impeller.

[0013] In some embodiments, the connecting assembly includes a connecting shaft, a connecting seat is disposed at one end of the connecting shaft, and a telescopic spring is disposed at one end of the connecting shaft.

[0014] In some embodiments, the other end of the telescopic spring is fixedly disposed on a side surface of a connecting seat, and the connecting seat is rotatably disposed on the inner side wall of the motor body.

[0015] In some embodiments, a plurality of limit piles are provided at one end of the connecting shaft, and a limit groove matching the limit piles is provided on the connecting seat.

[0016] The utility model has at least the following beneficial effects:

[0017] By setting up a cooling component and a connecting component, the cooling component is used to quickly and evenly distribute the air entering the motor body to the surroundings of the combined rotor, making the air flow smoother, facilitating the cooling fins on the combined rotor to better dissipate heat, thereby improving the heat dissipation efficiency of the motor body and avoiding overheating.

[0018] By setting a connecting shaft, a connecting seat, a telescopic spring, a limit pile and a limit groove, and utilizing the telescopic cooperation between the connecting shaft and the connecting seat, the rotor body is installed into the motor body. The telescopic spring, the limit pile and the limit groove can further protect the rotor body so that it can be buffered when hit by external force and reduce the impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the motor body in the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the rotor body and the impeller in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the connection assembly and the motor body in the utility model;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of the connecting seat in the utility model.

[0024] In the figure: 1. Motor body; 2. Combined rotor; 21. Rotor body; 22. Fixing ring; 23. Heat dissipation fins; 3. Cooling assembly; 31. Protective plate; 32. Main shaft; 33. Impeller; 34. Heat dissipation holes; 4. Connecting assembly; 41. Connecting shaft; 42. Connecting seat; 43. Telescopic spring; 44. Limiting pile; 45. Limiting groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1:

[0027] See also Figure 1-3 The utility model provides a technical solution for a motor and a rotor protection structure thereof: a motor and a rotor protection structure thereof, comprising a motor body 1, and further comprising: a combined rotor 2 arranged inside the motor body 1; a cooling component 3 arranged on one side of the combined rotor 2 and the motor body 1, and further reducing the heat generated between the motor body 1 and the combined rotor 2 through the cooling component 3;

[0028] The interior of the motor body 1 is hollow, and the motor body 1 is a bilaterally symmetrical combination, and its shell is fastened by screws. This is a prior art and will not be described in detail here. The combined rotor 2 includes a rotor body 21, and fixed rings 22 are fixedly arranged at both ends of the rotor body 21. A plurality of heat sink fins 23 are fixedly arranged on one side of the fixed ring 22. The heat sink fins 23 are circularly arranged, and the heat sink fins 23 are inclined. This is a prior art and will not be described in detail here. The cooling component 3 includes a protective plate 31, and a main shaft 32 is rotatably connected to the center of the protective plate 31. The protective plate An impeller 33 is arranged on one side of 31. The single impeller 33 is arranged in an arc shape. When the impeller 33 rotates, an outward eccentric force is generated at the center thereof, so that the air at the center flows toward the outer periphery. A plurality of heat dissipation holes 34 are opened on the protective plate 31. The heat dissipation holes 34 are arranged to facilitate the exchange of air inside and outside the motor body 1 so that the internal heat can be easily dissipated. The protective plate 31 is rotatably arranged at one end of the motor body 1, and one end of the main shaft 32 is fixedly connected to the rotor body 21. The impeller 33 is arranged in a circular shape, and the heat dissipation holes 34 are arranged between the main shaft 32 and the impeller 33.

[0029] A cooling component 3 and a connecting component 4 are provided, and the cooling component 3 is used to quickly and evenly distribute the air entering the motor body 1 to the surroundings of the combined rotor 2, so that the air flow is smoother, and the cooling fins 23 on the combined rotor 2 are more convenient for heat dissipation, thereby improving the heat dissipation efficiency of the motor body 1 and avoiding overheating.

[0030] When the motor body 1 starts to work, the rotor body 21 will rotate at a high speed under the influence of electromagnetics. When the rotor body 21 rotates at a high speed, it will drive the fixed ring 22 thereon to start rotating at a high speed. The rotation of the fixed ring 22 will drive the multiple heat dissipation fins 23 fixed thereon to start rotating. Since each of the heat dissipation fins 23 is arranged in an inclined shape, when the heat dissipation fins 23 rotate at the same time, the surrounding air will be stirred along the heat dissipation fins 23 to form a vortex, thereby accelerating the air flow rate around the rotor body 21. At the same time, the main shaft 32 drives the protective plate 31 to rotate, and the heat dissipation holes 34 opened on the protective plate 31 will connect the air circulation inside the motor body 1 and the external environment. When the air enters the motor body 1 from the heat dissipation holes 34, it is first located at the main shaft 32. The impeller 33 arranged on the periphery of the main shaft 32 will drive the air to continuously diffuse from the center to the surroundings when rotating, so that the heat at the center of the rotor body 21 is evenly moved quickly from the outer wall of the rotor body 21 to the other side along with the air.

[0031] Embodiment 2:

[0032] See also Figure 4-5 The utility model provides a technical solution for a motor and its rotor protection structure: a motor and its rotor protection structure, comprising a connecting component 4 arranged on the other side of a combined rotor 2 and a motor body 1, the connection between the combined rotor 2 and the motor body 1 is realized by the connecting component 4, the connecting component 4 comprises a connecting shaft 41, one end of the connecting shaft 41 is provided with a connecting seat 42, one end of the connecting shaft 41 is provided with a telescopic spring 43, the other end of the telescopic spring 43 is fixedly arranged on a side surface of the connecting seat 42, the connecting seat 42 is rotatably arranged on the inner side wall of the motor body 1, one end of the connecting shaft 41 is provided with a plurality of limiting piles 44, and the connecting seat 42 is provided with limiting grooves 45 adapted to the limiting piles 44, the limiting piles 44 and the limiting grooves 45 are provided so that the limiting piles 44 can slide in the limiting grooves 45, and when the connecting shaft 41 drives the limiting piles 44 to rotate, the connecting seat 42 will be driven to rotate, so that the combined rotor 2 can ensure normal rotation while not affecting its installation.

[0033] A connecting shaft 41, a connecting seat 42, a telescopic spring 43, a limiting pile 44 and a limiting groove 45 are provided. The rotor body 21 is installed into the motor body 1 by utilizing the telescopic cooperation between the connecting shaft 41 and the connecting seat 42. The rotor body 21 can be further protected by the telescopic spring 43, the limiting pile 44 and the limiting groove 45 so that it can be buffered when hit by external force and reduce the impact force.

[0034] When installing the combined rotor 2, it is necessary to first insert the connecting seat 42 at one end of the rotor body 21 into the center of the inner wall of the motor body 1. By pressing the rotor body 21 toward one end, one end of the rotor body 21 will resist the connecting shaft 41 and move into the connecting seat 42. At this time, the limit pile 44 moves in the limit groove 45, and the telescopic spring 43 contracts. At the same time, the protective plate 31 is installed on the other side of the motor body 1. At this time, the telescopic spring 43 can be reset by letting go, and the rotor body 21 is installed inside the motor body 1. At this time, the connecting seat 42 can be closed to complete the installation.

[0035] 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.

[0036] 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

1. A motor and a rotor protection structure thereof, comprising a motor body (1), characterized in that: Also included are: A combined rotor (2), wherein the combined rotor (2) is arranged inside the motor body (1); A cooling component (3), the cooling component (3) being arranged on one side of the combined rotor (2) and the motor body (1), and further reducing the heat generated between the motor body (1) and the combined rotor (2) through the cooling component (3); A connecting component (4) is arranged on the other side of the combined rotor (2) and the motor body (1), and the connection between the combined rotor (2) and the motor body (1) is achieved through the connecting component (4).

2. A motor and rotor protection structure thereof according to claim 1, characterized in that: The interior of the motor body (1) is hollow, and the combined rotor (2) comprises a rotor body (21). Fixed rings (22) are fixedly provided at both ends of the rotor body (21), and a plurality of heat dissipation fins (23) are fixedly provided on one side of the fixed ring (22).

3. A motor and rotor protection structure thereof according to claim 2, characterized in that: The heat dissipation fins (23) are arranged in a circular shape, and the heat dissipation fins (23) are arranged in an inclined shape.

4. A motor and rotor protection structure thereof according to claim 3, characterized in that: The cooling component (3) comprises a protective plate (31), the center of which is rotatably connected to a main shaft (32), a side surface of the protective plate (31) is provided with an impeller (33), and the protective plate (31) is provided with a plurality of heat dissipation holes (34).

5. A motor and rotor protection structure thereof according to claim 4, characterized in that: The protective plate (31) is rotatably arranged at one end of the motor body (1), one end of the main shaft (32) is fixedly connected to the rotor body (21), the impeller (33) is arranged in a circular shape, and the heat dissipation hole (34) is arranged between the main shaft (32) and the impeller (33).

6. The motor and rotor protection structure thereof according to claim 1, characterized in that: The connecting assembly (4) comprises a connecting shaft (41), one end of the connecting shaft (41) is provided with a connecting seat (42), and one end of the connecting shaft (41) is provided with a telescopic spring (43).

7. A motor and rotor protection structure thereof according to claim 6, characterized in that: The other end of the telescopic spring (43) is fixedly arranged on a side surface of the connecting seat (42), and the connecting seat (42) is rotatably arranged on the inner side wall of the motor body (1).

8. A motor and rotor protection structure thereof according to claim 7, characterized in that: One end of the connecting shaft (41) is provided with a plurality of limiting piles (44), and the connecting seat (42) is provided with limiting grooves (45) matched with the limiting piles (44).

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