Stator assembly of motor, motor and unmanned aerial vehicle

Abstract

The utility model discloses a stator assembly of a motor, a motor and an unmanned aerial vehicle, and relates to the technical field of motors. The stator assembly comprises a stator iron core, an inner ring of the stator iron core is provided with a plurality of antiskid grooves, the plurality of antiskid grooves are arranged in a plurality of S shapes, and the contact parts of the side surfaces of the plurality of antiskid grooves and the inner ring surface of the stator iron core are all provided with fillets. When the coil is loaded, the insulation paper is deformed and enters the anti-skid grooves under the extrusion of the coil, and the friction force between the insulation paper and the stator iron core is increased through the anti-skid grooves, so that the phenomenon that the insulation paper is driven to move synchronously while the coil moves due to the friction force between the coil and the insulation paper when the coil passes through the stator grooves is avoided; according to the utility model, the insulation paper does not displace after the installation of the coil is completed, the possibility that the insulation paper leaves the stator slot to cause the fault of the stator assembly is prevented, and the arrangement of the fillet enables the insulation paper not to rub with the sharp corner angle after entering the anti-skid slot, thereby preventing the insulation paper from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a stator assembly of a motor, a motor, and a drone. Background Technology

[0002] In drones, motors are installed to provide power. As one of the core components of the motor system, the stator assembly has evolved from traditional wound type to modern centralized winding type.

[0003] However, during the production of motors, insulating paper needs to be added to the stator slots in the stator core before the coil is filled in. However, the stator slots are narrow, and the insulation paper often shifts position when the coil is filled manually, which is difficult to correct, resulting in a decrease in the production efficiency of the motor stator assembly. Utility Model Content

[0004] The purpose of this invention is to provide a stator assembly for an electric motor, an electric motor, and an unmanned aerial vehicle (UAV) to address the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: it includes a stator core, and the inner ring of the stator core is provided with a plurality of anti-slip grooves, the plurality of anti-slip grooves are arranged in multiple S-shaped patterns, and the contact parts between the sides of the plurality of anti-slip grooves and the inner ring surface of the stator core are all provided with rounded corners.

[0006] Furthermore, a plurality of isolation components are provided at the inner ring of the stator core, and the plurality of isolation components correspond to the positions of the plurality of anti-slip grooves.

[0007] Furthermore, there is a gap between every two of the spacers, and the gap between every two spacers forms a stator groove, and the anti-slip grooves are respectively and correspondingly arranged in the stator grooves.

[0008] Furthermore, the outer ring of the stator core is provided with a plurality of first limiting grooves and a plurality of second limiting grooves, and the plurality of first limiting grooves correspond one-to-one with the positions of the plurality of second limiting grooves.

[0009] Furthermore, the two ends of the plurality of stator slots respectively extend to the two ends of the stator core cross-section, and a plurality of expansion slots are provided at one end face of the stator core, and the plurality of expansion slots are respectively connected to the plurality of stator slots one by one.

[0010] Furthermore, the connection points between the expansion slots and the stator slots are all provided with rounded corners, and the expansion slots of the rod correspond one-to-one with the positions of the anti-slip slots.

[0011] Compared with the prior art, the stator assembly of the motor, the motor and the drone provided by this utility model, during the coil loading process, the insulation paper deforms and enters the anti-slip groove under the compression of the coil. At this time, the multiple S-shaped settings of the anti-slip groove increase the friction between the insulation paper and the stator core, avoiding the friction between the coil and the insulation paper causing the coil to move synchronously with the insulation paper when passing through the stator slot. This prevents the insulation paper from shifting after the coil installation is completed, thus preventing the possibility of the insulation paper leaving the stator slot and causing the stator assembly to malfunction. At the same time, the rounded corners prevent the insulation paper from rubbing against sharp edges after entering the anti-slip groove, thus preventing damage to the insulation paper. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0014] Figure 2 Provided for the embodiments of this utility model Figure 1 A magnified structural diagram at point A;

[0015] Figure 3 Provided for the embodiments of this utility model Figure 1 A magnified structural diagram at point B;

[0016] Figure 4 A schematic diagram of the stator core end face structure provided for an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Stator core; 2. Anti-slip groove; 3. Isolator; 4. Stator slot; 5. First limiting slot; 6. Second limiting slot; 7. Expansion slot. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] Please see Figure 1-4This utility model provides a stator assembly for an electric motor, an electric motor, and an unmanned aerial vehicle. The stator assembly includes a stator core 1. A plurality of anti-slip grooves 2 are formed on the inner ring of the stator core 1. These anti-slip grooves 2 are arranged in multiple S-shapes. The contact points between the sides of the anti-slip grooves 2 and the inner ring surface of the stator core 1 are rounded. The rounded corners at the contact points ensure that the anti-slip grooves 2 do not interfere with the installation of insulating paper into the stator slots 4. Furthermore, during coil loading, the compression of the coil causes the insulating paper to deform and enter the anti-slip grooves. Inside slot 2, the multiple S-shaped designs of the anti-slip slot 2 increase the friction between the insulating paper and the stator core 1. This prevents the coil from moving synchronously with the insulating paper as it passes through the stator slot 4 due to the friction between the coil and the insulating paper. This ensures that the insulating paper will not shift after the coil is installed, preventing the possibility of the stator assembly malfunctioning due to the insulating paper leaving the stator slot 4. At the same time, the rounded corners prevent the insulating paper from rubbing against sharp edges after entering the anti-slip slot 2, thus preventing damage to the insulating paper.

[0020] Preferably, a plurality of isolation members 3 are provided at the inner ring of the stator core 1, and the plurality of isolation members 3 correspond to the positions of a plurality of anti-slip grooves 2 respectively. The arrangement of the isolation members 3 enables the formation of a plurality of stator slots 4, which facilitates the subsequent coil arrangement.

[0021] Preferably, there is a gap between every two isolation members 3, and the gap between every two isolation members 3 forms a stator slot 4. A number of anti-slip grooves 2 are respectively arranged in a number of stator slots 4. The stator slots 4 are used to install coils to ensure the normal function of the stator assembly.

[0022] Preferably, the stator core 1 is provided with a plurality of first limiting grooves 5 and a plurality of second limiting grooves 6 on the outer ring. The plurality of first limiting grooves 5 correspond one-to-one with the positions of the plurality of second limiting grooves 6. The setting of the first limiting grooves 5 and the second limiting grooves 6 enables the stator core 1 to be conveniently limited and installed.

[0023] Preferably, the two ends of several stator slots 4 extend to the two ends of the stator core 1, and several expansion slots 7 are provided on one end face of the stator core 1. The expansion slots 7 are connected to the several stator slots 4 one by one. The setting of the expansion slots 7 facilitates the coil to enter the positioning slot for positioning work, and saves time in the production of stator components.

[0024] Preferably, the connection points between the expansion slots 7 and the stator slots 4 are all provided with rounded corners. If the expansion slots 7 correspond one-to-one with the positions of the anti-slip slots 2, the rounded corners prevent the coil from getting stuck. At the same time, the connection between the expansion slots 7 and the anti-slip slots 2 improves the heat dissipation effect of the coil after it is working.

[0025] Furthermore, the motor provided in this application includes the aforementioned stator assembly, which is located inside the motor. The stator assembly is one of the core components of the motor and is mainly responsible for generating a magnetic field and interacting with the rotor to realize the conversion of electrical energy into mechanical energy, so that the motor can output mechanical energy. Therefore, the motor provided in this application should also have the effects brought about by the aforementioned stator assembly, which will not be elaborated further.

[0026] Furthermore, this application provides an unmanned aerial vehicle (UAV) that includes the aforementioned motor. The motor is mounted on the UAV's arm and connected via wiring to drive the UAV's fan blades to rotate. It is an aviation device that enables flight via remote control. It is characterized by its flexibility, maneuverability, high efficiency, and convenience, and is widely used in fields such as military reconnaissance, battlefield strikes, aerial photography, geographic surveying, agricultural plant protection, logistics transportation, disaster relief, environmental monitoring, power line inspection, and communication relay. Therefore, the UAV provided in this application should also have the effects brought about by the aforementioned motor, which will not be elaborated further.

[0027] Working principle: The anti-slip groove 2 has rounded corners at the contact points with the inner ring surface of the stator core 1. This ensures that the anti-slip groove 2 does not interfere with the installation of the insulating paper into the stator slot 4. During coil loading, the coil's compression causes the insulating paper to deform and enter the anti-slip groove 2. The multiple S-shaped features of the anti-slip groove 2 increase the friction between the insulating paper and the stator core 1, preventing the insulating paper from moving synchronously with the coil as it passes through the stator slot 4. This prevents the insulating paper from shifting after coil installation, thus preventing potential stator assembly malfunctions caused by the insulating paper leaving the stator slot 4. The rounded corners prevent the insulating paper from rubbing against sharp edges after entering the anti-slip groove 2, thus preventing damage to the insulating paper. The isolation element 3 facilitates the formation of several stator slots 4, which are used to install the coils to ensure the normal function of the stator assembly. The first limiting groove 5 and the second limiting groove 6 allow the stator core 1 to be conveniently limited and installed. The expansion groove 7 facilitates the coil's entry into the positioning groove for positioning, saving time in the production of the stator assembly. The rounded corners prevent the coil from getting stuck. At the same time, the connection between the expansion groove 7 and the several anti-slip grooves 2 improves the heat dissipation effect of the coil after operation.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A stator assembly for an electric motor, characterized in that, Includes a stator core (1), and the inner ring of the stator core (1) is provided with a plurality of anti-slip grooves (2). The plurality of anti-slip grooves (2) are arranged in multiple S-shaped patterns, and the contact parts between the sides of the plurality of anti-slip grooves (2) and the inner ring surface of the stator core (1) are all provided with rounded corners.

2. The stator assembly of an electric motor according to claim 1, characterized in that, The stator core (1) has a plurality of isolation components (3) arranged in the inner ring, and the plurality of isolation components (3) correspond to the positions of the plurality of anti-slip grooves (2).

3. The stator assembly of an electric motor according to claim 2, characterized in that, There is a gap between every two isolation members (3), and the gap between every two isolation members (3) forms a stator groove (4). A plurality of anti-slip grooves (2) are respectively arranged in a plurality of stator grooves (4).

4. The stator assembly of an electric motor according to claim 3, characterized in that, The stator core (1) is provided with a plurality of first limiting grooves (5) and a plurality of second limiting grooves (6) on its outer ring, and the plurality of first limiting grooves (5) correspond one-to-one with the positions of the plurality of second limiting grooves (6).

5. The stator assembly of an electric motor according to claim 4, characterized in that, The stator slots (4) extend through both ends to the cross-sections of both ends of the stator core (1). A plurality of expansion slots (7) are provided on one end face of the stator core (1), and the plurality of expansion slots (7) are respectively connected to the plurality of stator slots (4).

6. The stator assembly of an electric motor according to claim 5, characterized in that, The connection points of several expansion slots (7) and several stator slots (4) are all provided with rounded corners. If the expansion slots (7) of the rod correspond one-to-one with the positions of several anti-slip slots (2).

7. An electric motor, characterized in that, Includes a stator assembly of an electric motor as described in any one of claims 1-6.

8. A drone, characterized in that, Including the motor as described in claim 7.

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