A new structure high-performance direct-current speed reduction motor

Abstract

This utility model relates to a novel high-performance DC geared motor, comprising a shaft and a frame. A rotor core is mounted on the shaft, and the frame is inserted into the rotor core. A closed-slot ring is mounted on the outer circumference of the wound rotor core, with its inner diameter pressed into and fixed to the rotor core. The closed-slot ring is annular in structure. Sealing adhesive layers are provided on both sides of the frame and on the wound armature. By modifying the structure of the brushed motor rotor, a closed-slot design is implemented in the traditional rotor to reduce cogging torque, improve the smoothness of the solar energy mechanism's operation, reduce stray losses, and thus improve motor efficiency. The main body of the rotor core is sealed with a high thermal conductivity adhesive, with large-area sealing to improve the heat dissipation of the entire winding, reduce temperature rise and copper losses, thereby improving motor efficiency.

Description

Technical Field

[0001] This utility model relates to the field of DC motor technology, and in particular to a new structure of high-performance DC geared motor. Background Technology

[0002] With the increasing global demand for clean and efficient energy, solar energy, as a renewable energy source, has received widespread attention and application. In solar power systems, the widely used DC brushed motors are key energy conversion devices, and their high efficiency and reliability significantly impact the overall system efficiency and stability. However, conventional solar DC brushed motors employ an open-slot design and varnish-coated windings, resulting in high stray losses and poor heat dissipation. This leads to the ineffective utilization of conventional brushed geared motor systems in solar energy applications. Utility Model Content

[0003] The purpose of this invention is to provide a new structure for a high-performance DC geared motor to solve the problems encountered in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A novel high-performance DC geared motor includes a shaft and a frame. A rotor core is mounted on the shaft, and the frame is inserted into the rotor core. A closed ring is mounted on the outer circumferential surface of the wound rotor core. The inner diameter surface of the closed ring is press-fitted and fixed to the rotor core. The closed ring has an annular structure. Sealing adhesive layers are provided on both sides of the frame and on the wound armature.

[0006] In the above scheme, an installation hole is provided on the end face of the closed ring, and the outer circumferential surface of the wound rotor core is inserted into the installation hole through a plug rod and fixedly connected to the closed ring.

[0007] In the above scheme, the interior of the closed ring has a polygonal structure, and the center of each inner side is provided with a boss that abuts against the skeleton. As a preferred embodiment, the boss is a convex structure that bulges inward into the cavity, and a closed groove is provided between two adjacent bosses.

[0008] In the above scheme, an electromagnetic wire is installed in the cavity of the frame. Additionally, a commutator is installed on one side of the rotating shaft.

[0009] Compared with existing technologies, the beneficial effects of this utility model are as follows: By modifying the structure of the brushed motor rotor, a closed-slot design is adopted for the traditional rotor to reduce cogging torque, improve the operational stability of the solar energy mechanism, reduce the amplitude of air gap magnetic flux density harmonics, and reduce stray losses, thereby improving motor efficiency. The rotor core body is then encapsulated with a high thermal conductivity adhesive over a large area, improving the heat dissipation of the entire winding, reducing temperature rise and copper losses, and thus improving motor efficiency. Attached Figure Description

[0010] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0011] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0012] Figure 2 This is a schematic diagram of the external structure of this utility model;

[0013] Figure 3 This is a longitudinal sectional view of the rotor in this utility model;

[0014] Figure 4 This is a schematic diagram of the closed ring structure in this utility model;

[0015] The following numbers are labeled in the diagram: 1-shaft; 11-frame; 2-rotor core; 21-closed ring; 22-sealing layer; 23-electromagnetic wire; 24-mounting hole; 25-boss; 26-closed groove; 3-commutator. Detailed Implementation

[0016] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the utility model will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of this utility model, and therefore only show the relevant components of this utility model.

[0017] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 and Figure 2 As shown, a novel high-performance DC geared motor includes a shaft 1 and a frame 11. A rotor core 2 is mounted on the shaft 1, and the frame 11 is inserted into the rotor core 2. A closed ring 21 is installed on the outer circumferential surface of the wound rotor core 2. The inner diameter surface of the closed ring 21 is press-fitted and fixed to the rotor core 2. The closed ring 21 has an annular structure. In implementation, after the entire rotor core 2 is wound, the closed ring 21 is pressed in by a press, forming an interference fit with the outer circumferential surface of the rotor core 2.

[0020] By modifying the structure of the brushed motor rotor and incorporating a closed-slot design, the cogging torque is reduced, improving the operational stability of the solar energy mechanism. This also reduces the amplitude of air gap magnetic flux density harmonics and stray losses, thereby increasing motor efficiency.

[0021] Based on different models of DC brushed motors, the size and shape of the closed ring 21 are precisely calculated using finite element analysis and computer-aided design to ensure uniform magnetic circuit distribution and connection strength, thereby guaranteeing stability under high-speed operation.

[0022] Please refer to Figure 4 The end face of the closed ring 21 is provided with a mounting hole 24. The outer circle of the skeleton 11 does not exceed the inner diameter of the closed ring 21. The outer circumference of the wound rotor core 2 is inserted into the mounting hole 24 through the insertion rod and fixedly connected to the closed ring 21. Both ends are equipped with screws and are covered by a sealing layer 22.

[0023] The closed ring 21 has a polygonal internal structure, with a boss 25 at the center of each inner side that abuts against the frame 11. As a preferred embodiment, the boss 25 is a convex structure extending into the inner cavity, and a closed groove 26 is provided between two adjacent bosses 25, located at the included angle of the polygonal internal structure of the closed ring 21. The design of the closed groove 26 and the boss 25 ensures that the closed ring 21 can be accurately and tightly connected and fixed to the rotor teeth, improving the connection stability and operating efficiency of the brushed motor.

[0024] The two sides of the frame 11 and the armature after winding are provided with a sealing layer 22. The sealing layer 22 covers the entire rotor armature but does not exceed the outer circle of the closed ring 21. This sealing layer 22 provides large-area potting and has good heat dissipation capacity. In implementation, a high thermal conductivity material can be used for potting the rotor core 2. After the main body of the rotor core 2 is sealed, it is potted with a high thermal conductivity adhesive to improve the heat dissipation of the entire winding, reduce temperature rise and copper loss, thereby improving motor efficiency and also contributing to improving the overall energy efficiency and stability of the motor.

[0025] Please see Figure 1 and Figure 3During implementation, an electromagnetic wire 23 is installed in the cavity of the frame 11 to achieve the electromagnetic cutting function. In addition, a commutator 3 is installed on one side of the rotating shaft 1 to drive the motor to rotate smoothly.

[0026] The manufacturing process of this utility model is as follows: the rotor core 2 is inserted into the rotating shaft 1----the frame 11 is installed on the rotor core 2----the commutator 3 is pressed in----the electromagnetic wire 23 is wound----spot welding----the closed ring 21 is pressed in and mates with the outer tooth surface of the rotor core----the entire rotor assembly is potted with adhesive layer 22.

[0027] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel high-performance DC geared motor, comprising a rotating shaft (1) and a frame (11), wherein a rotor core (2) is mounted on the rotating shaft (1), and the frame (11) is inserted into the rotor core (2), characterized in that: A closed ring (21) is installed on the outer circumferential surface of the wound rotor core (2). The inner diameter surface of the closed ring (21) is pressed into and fixed with the rotor core. The closed ring (21) is a ring structure. The two sides of the skeleton (11) and the armature after winding are provided with a sealing layer (22).

2. The novel high-performance DC geared motor according to claim 1, characterized in that: The end face of the closed ring (21) is provided with a mounting hole (24). The outer circumference of the wound rotor core (2) is inserted into the mounting hole (24) through a plug rod and fixedly connected to the closed ring (21).

3. The novel high-performance DC geared motor according to claim 1, characterized in that: The interior of the closed ring (21) has a polygonal structure, and each inner side has a boss (25) that abuts against the skeleton (11) at the center.

4. The novel high-performance DC geared motor according to claim 3, characterized in that: The boss (25) is a convex structure that bulges into the inner cavity, and a closed groove (26) is provided between two adjacent bosses (25).

5. A novel high-performance DC geared motor according to claim 1, characterized in that: Electromagnetic wires (23) are installed in the cavity of the skeleton (11).

6. The novel high-performance DC geared motor according to claim 1, characterized in that: A commutator (3) is installed on one side of the shaft (1).

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