Commutator for motor of automobile glass lifter

Abstract

The utility model relates to the technical field of motor commutators, and discloses a motor commutator of an automobile glass lifter, which comprises a plurality of commutator sheets, heat dissipation fins are fixedly connected to insulation gaps formed among the commutator sheets, commutator sheet hooks are fixedly connected to the tops of the commutator sheets, and the commutator sheets are fixedly connected to the commutator sheet hooks. The outer walls of the commutator segment hooks are fixedly connected with arc-shaped flow deflectors, and the interior of the commutator segment is provided with a self-heat-dissipation assembly. The self-heat-dissipation assembly comprises a silver-plated coating, a chromium-zirconium-copper layer and a heat-conducting filler, the silver-plated coating is uniformly coated on the outer wall of the commutator segment, and the chromium-zirconium-copper layer and the heat-conducting filler are respectively arranged in the commutator segment. According to the utility model, a multi-stage heat dissipation structure is constructed, heat can be rapidly led out and dissipated, the working temperature is reduced, material aging is reduced, the operation stability of the motor is enhanced, the service life of the commutator is prolonged, and the performance and reliability of the motor are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of motor commutator technology, and in particular to a commutator for an automotive window regulator motor. Background Technology

[0002] In daily car use, the power window function is frequently operated. As a key component of this system, the performance of the power window motor commutator directly affects the smoothness and stability of window operation, as well as the lifespan of the entire system. With the continuous development of the automotive industry, consumers' demands for vehicle comfort and reliability are increasing, making the optimization of the power window motor commutator's performance particularly urgent.

[0003] In existing technologies, automotive window regulator motor commutators typically use conventional metal materials as conductive components, relying on simple mechanical connections to achieve current commutation. Regarding heat dissipation, most rely solely on natural cooling or simple heat sinks, lacking a systematic and efficient heat dissipation mechanism. Their working principle is mainly based on basic electromagnetic induction, using a commutator to change the current direction to achieve continuous rotation of the motor rotor, but there are limited methods for improving conductivity and heat management.

[0004] Existing automotive window regulator motor commutators suffer from high contact resistance during operation, leading to low conductivity and significant energy loss. This not only increases vehicle energy consumption but also reduces motor output power. Furthermore, the lack of an effective heat dissipation structure causes the commutator temperature to rise sharply after prolonged operation, accelerating material aging, severely impacting motor stability, causing frequent malfunctions, and drastically shortening the commutator's lifespan. This ultimately fails to meet the demands of modern automobiles for high-performance, high-reliability window regulator systems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a commutator for an automotive window regulator motor, which aims to improve the problem that in the existing automotive window regulator motor commutator, the contact resistance is large when current flows through the components during operation, resulting in low conductivity and a large amount of electrical energy being wasted for no reason. This not only increases the energy consumption of the car, but also reduces the output power of the motor.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a commutator for an automotive window regulator motor, comprising multiple commutator segments, wherein heat dissipation fins are fixedly connected to the insulating gaps formed between the multiple commutator segments, a commutator segment hook is fixedly connected to the top of the commutator segment, an arc-shaped guide plate is fixedly connected to the outer wall of the commutator segment hook, and a self-heating component is provided inside the commutator segment;

[0007] The self-heating component includes a silver-plated coating, a chromium-zirconium-copper layer, and a thermally conductive filler. The silver-plated coating is uniformly applied to the outer wall of the commutator segments, and the chromium-zirconium-copper layer and the thermally conductive filler are respectively disposed inside the commutator segments.

[0008] Furthermore, a base is provided inside the commutator segment, and a mold core is fixedly connected inside the base. Hook feet, support feet, and T-shaped limiting posts are fixedly connected to the inner wall of the commutator segment, and the hook feet, support feet, and T-shaped limiting posts are all located inside the base.

[0009] Furthermore, the arc-shaped guide vane is arranged in an arc-shaped inclined shape to guide the airflow.

[0010] Furthermore, the T-shaped limiting post is designed to guide the installation of the commutator segments.

[0011] Furthermore, the hook foot and the support foot are arranged in the same direction to facilitate the installation of the commutator segments.

[0012] Furthermore, the silver plating coating is disposed on the inner and outer sides of the commutator segments to improve the conductivity of the commutator segments.

[0013] Furthermore, the chromium-zirconium copper layer is made of electrolytic copper as a substrate, which is used to improve the electrical and thermal conductivity of the commutator segments.

[0014] Furthermore, the thermally conductive filler is made of thermally conductive silicone grease, which is used to improve the heat dissipation performance of the commutator segments.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the outer wall of the commutator segments is silver-plated, which greatly reduces contact resistance, improves conductivity, and reduces energy consumption. The internal chromium-zirconium-copper layer is combined with thermally conductive filler, and is equipped with heat dissipation fins and arc-shaped guide vanes to construct a multi-level heat dissipation structure, which can quickly conduct and dissipate heat, reduce operating temperature, reduce material aging, enhance motor operation stability, extend commutator service life, and significantly improve motor performance and reliability.

[0017] 2. In this utility model, the hook foot, support foot and T-shaped limiting post of the inner wall of the commutator plate are embedded in the base. The hook foot and support foot provide a stable assembly reference. The T-shaped limiting post accurately guides the installation position to avoid misalignment. The inner mold core of the base has a reinforced structure. The arc-shaped guide plate has an inclined design to optimize heat dissipation and reduce installation interference, making assembly simpler and more accurate. It improves the product structure stability and assembly efficiency, which is conducive to large-scale production. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the commutator of the automotive window regulator motor proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the commutator segment of the commutator motor for the automotive window regulator proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the base of the commutator of the automotive window regulator motor proposed in this utility model.

[0021] Figure 4 This is a schematic diagram showing one side of the commutator segment of the commutator motor for the automotive window regulator proposed in this utility model.

[0022] Legend:

[0023] 1. Commutator segment; 2. Heat dissipation fins; 3. Commutator segment hooks; 4. Arc-shaped guide vanes; 5. Silver plating; 6. Chromium-zirconium-copper layer; 7. Thermally conductive filler; 8. Base; 9. Mold core; 10. Hook foot; 11. Support foot; 12. T-shaped limit post. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 - Figure 4 The present invention provides an embodiment of a car window regulator motor commutator, comprising multiple commutator segments 1, with heat dissipation fins 2 fixedly connected to the insulating gaps formed between the multiple commutator segments 1. By setting the heat dissipation gaps, the heat dissipation area is increased, providing more ways for heat dissipation and improving heat dissipation efficiency. A commutator segment hook 3 is fixedly connected to the top of the commutator segment 1, and an arc-shaped guide plate 4 is fixedly connected to the outer wall of the commutator segment hook 3. Located on the commutator segment hook 3, it guides the airflow and accelerates heat dissipation. At the same time, its inclined design optimizes the heat dissipation airflow and reduces spatial interference during installation. A self-heating component is provided inside the commutator segment 1.

[0026] The self-heating component includes a silver-plated coating 5, a chromium-zirconium-copper layer 6, and a thermally conductive filler 7. The silver-plated coating 5 is uniformly coated on the outer wall of the commutator segment 1. Due to the excellent conductivity of silver, the contact resistance when current flows through the commutator segment 1 is greatly reduced, the conductivity efficiency is improved, and the energy loss is reduced. The chromium-zirconium-copper layer 6 and the thermally conductive filler 7 are respectively disposed inside the commutator segment 1. The chromium-zirconium-copper layer 6 uses electrolytic copper as the base material. Combined with the highly thermally conductive thermally conductive filler 7, it can quickly conduct the heat generated inside the commutator segment 1. The thermally conductive filler 7 works in conjunction with the chromium-zirconium-copper layer 6 to enhance the thermal conductivity of the chromium-zirconium-copper layer 6 and help to quickly conduct the heat inside the commutator segment 1.

[0027] Specifically, during commutator operation, current flows through commutator segments 1. The silver-plated coating 5 on the outer wall of the segment significantly reduces contact resistance, improves conductivity, and reduces energy loss due to the excellent conductivity of silver. The chromium-zirconium copper layer 6 inside the commutator segment 1 uses electrolytic copper as the base material and is combined with a thermally conductive filler 7 with high thermal conductivity to quickly dissipate internal heat. The heat dissipation fins 2 at the insulation gaps increase the heat dissipation area, and the arc-shaped guide vanes 4 on the commutator segment hooks 3 guide airflow, accelerate heat dissipation, effectively reduce operating temperature, reduce material aging caused by high temperature, enhance motor operation stability, extend commutator service life, and ensure stable operation of the automotive window regulator motor.

[0028] Reference Figure 1 - Figure 4 The commutator segment 1 has a base 8 inside, and a mold core 9 is fixedly connected inside the base 8. The base 8 supports all components, and the mold core 9 is located inside the base 8 to further reinforce the overall structure. The inner wall of the commutator segment 1 is fixedly connected to hook feet 10, support feet 11, and T-shaped limiting posts 12. The hook feet 10, support feet 11, and T-shaped limiting posts 12 are all located inside the base 8 and are arranged in the same direction on the inner wall of the commutator segment 1, providing a stable reference for the assembly of the commutator segment 1. The arc-shaped guide vane 4 is set in an arc-shaped inclined shape. The following components are used to guide airflow: T-shaped limit post 12 is used to guide the installation of commutator segment 1; hook foot 10 and support foot 11 are arranged in the same direction to facilitate the installation of commutator segment 1; silver plating coating 5 is applied to the inner and outer sides of commutator segment 1 to improve the conductivity of commutator segment 1; chromium zirconium copper layer 6 is made of electrolytic copper as the base material to improve the conductivity and thermal conductivity of commutator segment 1; and thermally conductive filler 7 is made of thermally conductive silicone grease to improve the heat dissipation performance of commutator segment 1.

[0029] Specifically, the hook feet 10 and support feet 11 on the inner wall of the commutator segment 1 are set in the same direction to provide a stable reference for assembly. The T-shaped limit post 12 accurately guides the installation position of the commutator segment 1 based on the T-shaped contour to prevent misalignment. The mold core 9 in the base 8 strengthens the overall structure. The inclined design of the arc-shaped guide vane 4 optimizes the heat dissipation airflow and reduces spatial interference during installation, improving assembly efficiency and making the production of the commutator of the automotive window regulator motor more efficient and convenient.

[0030] Working principle: During the operation of the commutator, when the current flows through the commutator segment 1, the silver-plated coating 5 on its outer wall significantly reduces the contact resistance, improves the conductivity, and reduces energy loss. At the same time, the chromium zirconium copper layer 6 set inside the commutator segment 1 uses electrolytic copper as the base material and is combined with the highly thermally conductive thermal filler 7 to quickly conduct heat out of the commutator segment. In addition, the heat dissipation fins 2 at the insulation gaps increase the heat dissipation area, and the arc-shaped guide vanes 4 on the commutator segment hooks 3 guide the airflow to accelerate heat dissipation. This multi-stage heat dissipation structure effectively reduces the operating temperature of the commutator, reduces material aging caused by high temperature, thereby improving the stability of motor operation and extending the service life of the commutator.

[0031] In addition, the hook feet 10, support feet 11 and T-shaped limiting posts 12 on the inner wall of the commutator segment 1 are all embedded in the base 8. The hook feet 10 and support feet 11, which are arranged in the same direction, provide a stable assembly reference, while the T-shaped limiting posts 12 guide the installation position of the commutator segment 1 precisely through their T-shaped contours to avoid misalignment. The mold core 9 in the base 8 further strengthens the overall structure. In addition, the inclined design of the arc-shaped guide vane 4 not only optimizes the heat dissipation airflow, but also reduces spatial interference during installation.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A commutator for an automotive window regulator motor, comprising multiple commutator segments (1), characterized in that: Heat dissipation fins (2) are fixedly connected to the insulating gaps formed between the multiple commutator segments (1), a commutator segment hook (3) is fixedly connected to the top of the commutator segment (1), an arc-shaped guide plate (4) is fixedly connected to the outer wall of the commutator segment hook (3), and a self-heating component is provided inside the commutator segment (1). The self-heating component includes a silver-plated coating (5), a chromium-zirconium-copper layer (6), and a thermally conductive filler (7). The silver-plated coating (5) is uniformly coated on the outer wall of the commutator segment (1), and the chromium-zirconium-copper layer (6) and the thermally conductive filler (7) are respectively disposed inside the commutator segment (1).

2. The commutator for the automotive window regulator motor according to claim 1, characterized in that: The commutator segment (1) is provided with a base (8) inside, and a mold core (9) is fixedly connected inside the base (8). The inner wall of the commutator segment (1) is fixedly connected with a hook foot (10), a support foot (11) and a T-shaped limiting post (12). The hook foot (10), the support foot (11) and the T-shaped limiting post (12) are all located inside the base (8).

3. The commutator for the automotive window regulator motor according to claim 2, characterized in that: The arc-shaped guide vane (4) is arranged in an arc-shaped inclined shape to guide the airflow.

4. The commutator for the automotive window regulator motor according to claim 2, characterized in that: The T-shaped limiting post (12) is T-shaped and is used to guide the installation of the commutator segment (1).

5. The commutator for the automotive window regulator motor according to claim 2, characterized in that: The hook foot (10) and the support foot (11) are arranged in the same direction to facilitate the installation of the commutator segment (1).

6. The commutator for the automotive window regulator motor according to claim 1, characterized in that: The silver plating coating (5) is disposed on the inner and outer sides of the commutator segment (1) to improve the conductivity of the commutator segment (1).

7. The commutator for the automotive window regulator motor according to claim 1, characterized in that: The chromium-zirconium copper layer (6) is made of electrolytic copper as a substrate and is used to improve the electrical and thermal conductivity of the commutator segments (1).

8. The commutator for the automotive window regulator motor according to claim 1, characterized in that: The thermally conductive filler (7) is made of thermally conductive silicone grease and is used to improve the heat dissipation performance of the commutator plate (1).

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