Rotor sheet structure of brushless motor

Abstract

The utility model discloses a rotor sheet structure of a brushless motor, which belongs to the technical field of motors and comprises a rotor sheet body and a shaft hole, the shaft hole is arranged in the middle of the surface of the rotor sheet body, a rotating shaft is arranged in the shaft hole, a plurality of winding columns distributed circumferentially are connected to the peripheral side of the rotor sheet body, and the outer end of each winding column is connected with fixing teeth. A plurality of positioning holes which are distributed circumferentially are formed in the surface of the rotor sheet body, a plurality of positioning columns which are distributed circumferentially are connected to the surface of the rotor sheet body, and each positioning column is arranged between every two adjacent positioning holes. According to the utility model, when two adjacent rotor sheet bodies are stacked, the positioning holes of the rotor sheet body at the upper end can be inserted into the positioning columns of the rotor sheet body at the lower end at will, so that the accuracy and convenience of assembly are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a rotor sheet structure of a brushless motor. Background Art

[0002] Brushless DC motors use semiconductor switching devices to achieve electronic commutation, that is, electronic switching devices are used to replace traditional contact commutators and brushes. It has the advantages of high reliability, no commutation sparks, and low mechanical noise. It is widely used in high-end recorders, video recorders, electronic instruments and automated office equipment. The rotor of the brushless motor is a permanent magnet, which is connected to the output shaft together with the housing. The stator is a winding coil, and the commutation brushes used by the brushed motor to alternately transform the electromagnetic field are removed;

[0003] For example, the utility model patent with the announcement number CN216162485U discloses a rotor punching sheet of a brushless DC motor, comprising a punching sheet body; a bearing hole is provided inside the punching sheet body; the bearing hole and the punching sheet body are concentric circles; a latch is fixedly connected to the bearing hole; by providing a bearing hole on the punching sheet body and arranging a latch on the side of the bearing hole, a guiding function is achieved in the process of stacking rotor punching sheets, and the existing rotor punching sheets are solved. During the stacking process, since more rotor punching sheets need to be stacked, the stacked rotor punching sheets are not easy to align, which makes the rotor inside the rotor difficult to align. The uneven grooves are likely to cause deviations when winding the coil. Such a rotor will be in an oscillating state during use. Over time, the rotor bearing will eventually bend and break, resulting in damage to the device. However, due to the large number of grooves and protrusions when stacking the sheet bodies, the installation of the sheet bodies will be inconvenient, and the alignment process will be cumbersome when stacking two sheet bodies, which will ultimately result in a reduced stacking efficiency of the sheet bodies. For this reason, we propose a rotor sheet structure for a brushless motor. Utility Model Content

[0004] The purpose of the utility model is to provide a rotor sheet structure of a brushless motor to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotor plate structure of a brushless motor, comprising a rotor plate body and an axial hole, an axial hole is opened at a middle position on the surface of the rotor plate body, a rotating shaft is arranged in the axial hole, a plurality of circumferentially distributed winding posts are connected to the outer peripheral side of the rotor plate body, a fixing tooth is connected to the outer end of each winding post, a plurality of circumferentially distributed positioning holes are opened on the surface of the rotor plate body, a plurality of circumferentially distributed positioning posts are connected to the surface of the rotor plate body, and each of the positioning posts is arranged between two adjacent positioning holes.

[0006] Preferably, through holes A are formed on the surface of the wire winding post, through holes B are formed on the surface of the fixed teeth, and the through holes A and the through holes B are communicated with each other.

[0007] Preferably, the angle formed between the two wire winding posts is equal to the angle formed between the positioning hole and the adjacent positioning post.

[0008] Preferably, the outer diameter dimension of the positioning post is matched with the inner diameter dimension of the positioning hole.

[0009] Preferably, a plurality of heat dissipation holes distributed in a circumferential manner are formed through the surface of the rotor sheet body, and the angle between two adjacent heat dissipation holes is matched with the angle between two adjacent wire winding posts.

[0010] Preferably, the heat dissipation holes are arranged on one side of the positioning hole close to the shaft hole.

[0011] Preferably, the depth of the positioning hole is matched with the length of the positioning post.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The rotor sheet body, the shaft hole, the heat dissipation holes, the wire winding posts, the fixed teeth, the positioning holes, the positioning posts and the rotating shaft are provided, so that when two adjacent rotor sheet bodies are stacked, the positioning holes of the upper rotor sheet body can be inserted into the positioning posts of the lower rotor sheet body arbitrarily, ensuring the accuracy and convenience of assembly.

[0014] 2. The circumferentially distributed heat dissipation holes, the through holes A and the through holes B are provided, which can effectively dissipate the heat generated during the operation of the motor, avoiding the influence of overheating on the performance and service life of the motor.

[0015] 3. Through the uniform angular distribution design (such as between the wire winding posts, between the positioning holes and the positioning posts), it helps to evenly distribute the magnetic lines of force inside the motor, thereby improving the energy efficiency conversion of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a front view structural schematic diagram of the utility model;

[0018] Figure 3 is a schematic diagram of the stacked structure of the rotor sheet body of the utility model.

[0019] In the figure: 1, rotor sheet body; 2, shaft hole; 3, heat dissipation hole; 4, wire winding post; 5, fixed tooth; 6, through hole A; 7, through hole B; 8, positioning hole; 9, positioning post; 10, rotating shaft. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 3 , the present invention provides a technical solution: a rotor sheet structure of a brushless motor, including a rotor sheet body 1 and a shaft hole 2. A shaft hole 2 is provided at the middle position on the surface of the rotor sheet body 1. A rotating shaft 10 is arranged in the shaft hole 2. A plurality of winding columns 4 distributed in a circle are connected to the outer peripheral side of the rotor sheet body 1. A fixing tooth 5 is connected to the outer end of each winding column 4. A plurality of positioning holes 8 distributed in a circle are provided on the surface of the rotor sheet body 1. A plurality of positioning columns 9 distributed in a circle are connected to the surface of the rotor sheet body 1. Each positioning column 9 is arranged between two adjacent positioning holes 8.

[0022] In this embodiment, a through hole A6 is provided on the surface of the winding column 4, and a through hole B7 is provided on the surface of the fixing tooth 5. The through hole A6 and the through hole B7 are communicated.

[0023] Specifically, the provision of the through hole A6 and the through hole B7 can effectively dissipate the heat generated during the operation of the motor, avoiding the influence of overheating on the performance and life of the motor.

[0024] In this embodiment, the angle formed between two winding columns 4 is equal to the angle formed between the positioning hole 8 and the adjacent positioning column 9.

[0025] Specifically, the outer diameter dimension of the positioning column 9 matches the inner diameter dimension of the positioning hole 8, and the depth of the positioning hole 8 matches the length of the positioning column 9, ensuring the accuracy and convenience of assembly, and improving the precision and efficiency of motor assembly.

[0026] In this embodiment, the outer diameter dimension of the positioning column 9 is matched with the inner diameter dimension of the positioning hole 8.

[0027] Specifically, it is ensured that there is no interference phenomenon when the positioning column 9 is inserted into the positioning hole 8.

[0028] In this embodiment, a plurality of heat dissipation holes 3 distributed in a circle are provided through the surface of the rotor sheet body 1. The angle between two adjacent heat dissipation holes 3 is matched with the angle between two adjacent winding columns 4.

[0029] Specifically, the provision of heat dissipation holes 3 can effectively increase the heat generated during the operation of the rotor sheet body 1, avoiding the impact of overheating on the performance and lifespan of the motor. The cooperation of through hole A6 and through hole B7 can further improve the heat dissipation effect.

[0030] In this embodiment, the heat dissipation holes 3 are provided on the side of the positioning hole 8 closer to the shaft hole 2.

[0031] In this embodiment, the depth of the positioning hole 8 is set to match the length of the positioning post 9.

[0032] Specifically, it is ensured that there are no gaps when two adjacent rotor sheet bodies 1 are stacked.

[0033] Working principle: When stacking the rotor sheets, it is only necessary to insert the positioning hole 8 of the upper rotor sheet body 1 into the positioning post 9 of the lower rotor sheet body 1 at this time. At this time, the winding posts 4 on two adjacent rotor sheet bodies 1 will not cross each other. The heat dissipation holes 3 on two adjacent rotor sheet bodies 1 are all provided in a through manner. After the motor is powered on, the current generates a magnetic field through the wire wound around the winding post 4 on the rotor sheet. The circumferentially distributed winding posts 4 and the fixing teeth 5 at their outer ends ensure the stability and regularity of the wire winding, thereby generating a stable and consistent magnetic field. The rotating shaft 10 in the shaft hole 2 drives the rotor sheet body 1 to rotate. The cooperation of the positioning hole 8 and the positioning post 9 ensures the position accuracy of the rotor sheet during rotation, enabling the components to maintain an accurate relative position. The heat dissipation holes 3 help to timely dissipate the heat generated during the operation of the motor, reduce the temperature of the rotor sheet, and ensure the performance and lifespan of the motor. During the rotation process, due to the reasonable distribution and precise cooperation of the components, the change of the magnetic field becomes more orderly, thereby realizing the efficient and stable operation of the motor. This utility model realizes that when stacking two adjacent rotor sheet bodies 1, the positioning hole 8 of the upper rotor sheet body 1 can be arbitrarily inserted into the positioning post 9 of the lower rotor sheet body 1, ensuring the accuracy and convenience of the assembly.

[0034] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. The rotor sheet structure of a brushless motor, comprising a rotor sheet body (1) and a shaft hole (2), is characterized in that: A shaft hole (2) is provided in the middle of the surface of the rotor sheet body (1). A rotating shaft (10) is arranged in the shaft hole (2). A plurality of wire winding columns (4) distributed in a circle are connected to the outer peripheral side of the rotor sheet body (1). A fixing tooth (5) is connected to the outer end of each wire winding column (4). A plurality of positioning holes (8) distributed in a circle are provided on the surface of the rotor sheet body (1). A plurality of positioning columns (9) distributed in a circle are connected to the surface of the rotor sheet body (1). Each positioning column (9) is arranged between two adjacent positioning holes (8).

2. The rotor sheet structure of a brushless motor according to claim 1, characterized in that: A through hole A (6) is provided on the surface of the wire winding column (4). A through hole B (7) is provided on the surface of the fixing tooth (5). The through hole A (6) and the through hole B (7) are communicated with each other.

3. The rotor sheet structure of a brushless motor according to claim 1, characterized in that: The angle formed between two adjacent wire winding columns (4) is equal to the angle formed between the positioning hole (8) and the adjacent positioning column (9).

4. The rotor sheet structure of a brushless motor according to claim 1, characterized in that: The outer diameter of the positioning column (9) is matched with the inner diameter of the positioning hole (8).

5. The rotor sheet structure of a brushless motor according to claim 1, characterized in that: A plurality of heat dissipation holes (3) distributed in a circle are provided through the surface of the rotor sheet body (1). The angle between two adjacent heat dissipation holes (3) is matched with the angle between two adjacent wire winding columns (4).

6. The rotor sheet structure of a brushless motor according to claim 5, characterized in that: The heat dissipation hole (3) is arranged on the side of the positioning hole (8) close to the shaft hole (2).

7. The rotor sheet structure of a brushless motor according to claim 1, characterized in that: The depth of the positioning hole (8) is matched with the length of the positioning column (9).

Images