A motor structure for improving heat dissipation performance by optimizing the distance between a rear cover and a PCB

Abstract

The utility model provides a kind of motor structure for improving heat dissipation performance by optimizing the distance between rear cover and PCB, including motor shell, motor body is fixedly installed in the motor shell inside, and the motor plate body rear end is fixedly installed with PCB board, the motor shell end portion is fixedly installed with rear cover, the utility model is closely contacted by boss in rear cover inside and PCB board surface, forms main heat conduction surface, so that the heat generated in the working process of PCB board can be rapidly conducted to rear cover by boss, and further spread to surrounding environment by the heat dissipation fin on the outer wall of rear cover, at the same time, the distance between PCB board and rear cover is controlled in 1-3mm range, not only ensure that there is enough contact area between the two for heat conduction, also effectively shorten the heat conduction path, so that heat can be more quickly conducted from PCB board to rear cover, and then radiate to surrounding environment by heat dissipation fin, and compact structure, without additional heat dissipation component, keep motor miniaturization.

Description

Technical Field

[0001] This utility model mainly relates to the field of motor technology, specifically a motor structure that improves heat dissipation performance by optimizing the spacing between the back cover and the PCB. Background Technology

[0002] Heat dissipation is a key factor in ensuring reliable operation and extending the lifespan of an electric motor. Motors generate a significant amount of heat during operation; if this heat is not dissipated promptly, it will cause the motor temperature to rise, affecting its performance and potentially leading to malfunction. Therefore, proper heat dissipation design is crucial for electric motors.

[0003] In existing technologies, the gap between the PCB board and the back cover in some motors is relatively large, resulting in an excessively long heat conduction path and low heat conduction efficiency. This makes the motor prone to overheating during long-term operation. To improve heat dissipation efficiency, some motor designs add additional heat dissipation components, such as fans or radiators. These components not only increase the size and weight of the motor but also increase manufacturing costs and maintenance difficulty. Utility Model Content

[0004] This utility model mainly provides a motor structure that improves heat dissipation performance by optimizing the distance between the back cover and the PCB, in order to solve the technical problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A motor structure that improves heat dissipation performance by optimizing the spacing between the back cover and the PCB includes a motor housing, a motor body fixedly installed inside the motor housing, a PCB board fixedly installed at the rear end of the motor body, a back cover fixedly installed at the end of the motor housing, first connecting blocks fixedly installed on both sides of the back cover, a heat dissipation component provided on the inner wall of the back cover, and a baffle component provided at one end of the back cover.

[0006] Preferably, the heat dissipation component includes a boss and heat dissipation fins. The boss is fixedly connected to the inner wall of the rear cover. One end of the boss is in contact with the surface of the PCB board, and multiple heat dissipation fins are provided on the outer wall of the rear cover.

[0007] Preferably, the partition assembly includes a partition ring, a partition plate, and a second connecting block. The partition ring is fitted to one end of the rear cover, and the partition plate is fixedly connected to one end of the partition ring. The second connecting blocks are fixedly installed on both sides of the partition plate, and the two second connecting blocks are connected to the first connecting block by bolts.

[0008] Preferably, the heat dissipation fins are distributed in a circular pattern on the outer wall of the rear cover, with the center point of the outer wall as a reference.

[0009] Preferably, the boss is a ring structure and is arranged around the central axis of the inner wall of the rear cover.

[0010] Preferably, mounting bases are fixedly installed on both bottom sides of the motor housing, and the two mounting bases are connected to other equipment by bolts.

[0011] Preferably, the distance between the back cover and the PCB board is set to 1-3mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The protrusions on the inner side of the back cover are in close contact with the PCB board surface, forming the main heat-conducting surface. This allows the heat generated by the PCB board during operation to be quickly conducted to the back cover through the protrusions, and then further dissipated to the surrounding environment through the heat dissipation fins on the outer wall of the back cover. At the same time, the gap between the PCB board and the back cover is controlled within the range of 1-3mm, which not only ensures sufficient contact area for heat conduction, but also effectively shortens the heat conduction path, allowing heat to be conducted more quickly from the PCB board to the back cover, and then dissipated to the surrounding environment through the heat dissipation fins. The structure is compact, requiring no additional heat dissipation components, thus keeping the motor miniaturized.

[0013] 2. By assembling the baffle plate and baffle ring, aligning them with the mounting position of the rear cover, and then using bolts to secure the second connecting blocks on both sides of the baffle plate to the first connecting block on the rear cover, the baffle assembly completely shields the heat dissipation fin area outside the rear cover, effectively preventing water vapor or dust in the environment from entering the motor housing through the heat dissipation duct. In humid or harsh environmental conditions, the intrusion of water vapor and dust may cause corrosion or damage to the PCB board and motor body, thereby affecting the motor's performance and service life.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the internal structure of the motor housing of this utility model; Figure 3 This is a schematic diagram of the connection structure between the partition component and the rear cover of this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0016] The attached figures are labeled as follows: 1. Motor housing; 2. Motor body; 3. PCB board; 4. Rear cover; 5. First connecting block; 6. Heat dissipation assembly; 601. Boss; 602. Heat dissipation fins; 7. Baffle assembly; 701. Baffle ring; 702. Baffle plate; 703. Second connecting block; 8. Mounting base. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive. Example

[0018] Please refer to the appendix carefully. Figure 1-4A motor structure that improves heat dissipation performance by optimizing the spacing between the back cover and the PCB includes a motor housing 1, a motor body 2 fixedly installed inside the motor housing 1, the motor body 2 being responsible for converting electrical energy into mechanical energy to realize the motor's operation function, a PCB board 3 fixedly installed at the rear end of the motor body 2, the PCB board 3 being the motor's control circuit board, carrying the motor control circuit, a back cover 4 fixedly installed at the end of the motor housing 1, the spacing between the back cover 4 and the PCB board 3 being set to 1-3mm to ensure sufficient space for heat conduction between the PCB board 3 and the back cover 4, and to avoid unnecessary interference due to excessive distance between the two, first connecting blocks 5 are fixedly installed on both sides of the back cover 4, the first connecting blocks 5 providing connection points for the back cover 4 to other components, facilitating subsequent assembly and installation operations, and a heat dissipation component 6 is provided on the inner wall of the back cover 4, the heat dissipation component 6 including a boss 601 and heat dissipation fins 602, the boss 601 being a ring structure fixedly connected to the inner wall of the back cover 4, and arranged around the central axis of the inner wall of the back cover 4, so that the boss 601 can... The boss 601 ensures full contact with the surface of the PCB board 3, forming a highly efficient main heat-conducting surface. When the PCB board 3 generates heat during operation, the heat can be quickly conducted to the rear cover 4 through the boss 601. Multiple heat dissipation fins 602 are provided on the outer wall of the rear cover 4. These fins are distributed circumferentially on the outer wall of the rear cover 4, with the center point as a reference, allowing for full contact between the heat dissipation fins 602 and the outside air. This quickly dissipates the heat conducted from the rear cover 4 into the surrounding environment, effectively reducing the internal temperature of the motor. Furthermore, a baffle assembly 7 is provided at one end of the rear cover 4. The baffle assembly 7 includes a baffle ring 701, a baffle plate 702, and a second connecting block 703. The baffle ring 701, made of fluororubber, is fixedly connected to one end of the rear cover 4, providing excellent sealing. The baffle plate 702 is fixedly connected to one end of the baffle ring 701, and the second connecting blocks 703 are fixedly installed on both sides of the baffle plate 702. The two second connecting blocks 703 are connected to the first connecting block 5 by bolts. The baffle assembly 7 completely shields the heat dissipation fins 602 area outside the rear cover 4. This effectively prevents water vapor or dust in the environment from entering the interior of the motor housing 1 through the heat dissipation duct, thereby avoiding corrosion or damage to the PCB board 3 and the motor body 2. Mounting seats 8 are fixedly installed on both bottom sides of the motor housing 1. The mounting seats 8 provide mounting points for the device, facilitating its installation on other equipment. The two mounting seats 8 are connected to other equipment by bolts, ensuring that the motor can be stably fixed on other equipment after installation, thus enabling the motor to work collaboratively with other equipment.

[0019] The specific operation method of this utility model is as follows: When the motor body 2 is working normally, the inner protrusion 601 of the rear cover 4 contacts the surface of the PCB board 3 to form a highly efficient main heat-generating surface. The heat generated by the PCB board 3 can be conducted to the rear cover 4 through the protrusion 601, and further dissipated to the surrounding environment through the heat dissipation fins 602 on the outer wall of the rear cover 4. At the same time, the distance between the PCB board 3 and the rear cover 4 is controlled within the range of 1-3mm, which shortens the heat conduction path and significantly improves the overall heat dissipation efficiency. When the motor body 2 is in a stopped state for a long time, the baffle plate 702 and the baffle ring 701 are assembled and aligned with the installation position of the rear cover 4. The second connecting blocks 703 on both sides of the baffle plate 702 are fastened to the first connecting block 5 on the rear cover 4 by bolts. In this way, the baffle assembly 7 completely covers the heat dissipation fins 602 area outside the rear cover 4, effectively preventing water vapor or dust in the environment from entering the motor housing 1 through the heat dissipation air duct, avoiding corrosion or damage to the PCB board 3 and the motor body 2, and ensuring the reliability of the motor in long-term storage and use in humid or harsh environments.

[0020] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A motor structure that improves heat dissipation performance by optimizing the spacing between the back cover and the PCB, comprising a motor housing (1), characterized in that: The motor body (2) is fixedly installed inside the motor housing (1), and a PCB board (3) is fixedly installed at the rear end of the motor body. A rear cover (4) is fixedly installed at the end of the motor housing (1), and a first connecting block (5) is fixedly installed on both sides of the rear cover (4). A heat dissipation component (6) is provided on the inner wall of the rear cover (4), and a baffle component (7) is provided at one end of the rear cover (4).

2. The motor structure according to claim 1, which improves heat dissipation performance by optimizing the distance between the back cover and the PCB, is characterized in that... The heat dissipation component (6) includes a boss (601) and heat dissipation fins (602). The boss (601) is fixedly connected to the inner wall of the back cover (4). One end of the boss (601) is in contact with the surface of the PCB board (3), and multiple heat dissipation fins (602) are provided on the outer wall of the back cover (4).

3. The motor structure according to claim 1, which improves heat dissipation performance by optimizing the distance between the back cover and the PCB, is characterized in that... The partition assembly (7) includes a partition ring (701), a partition plate (702), and a second connecting block (703). The back cover (4) is fitted with a partition ring (701) at one end, and a partition plate (702) is fixedly connected to one end of the partition ring (701). The second connecting blocks (703) are fixedly installed on both sides of the partition plate (702), and the two second connecting blocks (703) are connected to the first connecting block (5) by bolts.

4. The motor structure according to claim 2, which improves heat dissipation performance by optimizing the distance between the back cover and the PCB, is characterized in that... The heat dissipation fins (602) are distributed in a circular pattern on the outer wall of the back cover (4) with the center point of the outer wall of the back cover (4) as the reference.

5. The motor structure according to claim 2, which improves heat dissipation performance by optimizing the distance between the back cover and the PCB, is characterized in that... The boss (601) is a ring structure and is set around the central axis of the inner wall of the rear cover (4).

6. The motor structure according to claim 1, which improves heat dissipation performance by optimizing the distance between the back cover and the PCB, is characterized in that... The motor housing (1) has mounting bases (8) fixedly installed on both sides of the bottom, and the two mounting bases (8) are connected to other equipment by bolts.

7. The motor structure according to claim 1, which improves heat dissipation performance by optimizing the distance between the back cover and the PCB, is characterized in that... The distance between the back cover (4) and the PCB board (3) is set to 1-3mm.

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