Integrated servo motor

Abstract

This application discloses an integrated servo motor, belonging to the field of servo motor technology. It includes a drive box and a motor body. The motor body is fitted with a heat sink base. The drive box is mounted on the top surface of the heat sink base. Thermal grease is partially applied to the bottom surface of the drive box, connecting the drive box and the heat sink base. The drive box includes a housing and a control device. The housing has a rectangular parallelepiped structure, and a cavity for mounting the control device is formed inside. The housing is made of die-cast aluminum. This application optimizes the heat dissipation design and structural layout, effectively improving the heat dissipation performance of the integrated servo motor.

Description

Technical Field

[0001] This application relates to the field of servo motor technology, and in particular to an integrated servo motor. Background Technology

[0002] A servo motor is a type of motor used to control the operation of mechanical components, playing a crucial role in servo systems. It converts voltage signals into torque and speed to precisely drive the controlled object, achieving high-precision control of speed and position. Compared to traditional single-unit asynchronous motors, servo motors offer significant advantages such as high starting torque, wide operating range, and no self-rotation, making them widely used in various automation equipment, robotics, aerospace, and other fields.

[0003] Integrated servo motors are an innovative product in the field of servo motor technology. They integrate the servo driver and the servo motor into a single, unified structure. Compared to the traditional combination of discrete servo drives and motors, this design offers several significant advantages. First, it greatly reduces the size and internal space of the electrical cabinet. In the integrated design, numerous servo drive power units are distributed across the servo motor shafts at various moving positions within the equipment, requiring only one matching rectifier power unit to be installed in the electrical cabinet. Second, the reduced number of components and smaller cabinet size effectively optimize system costs while also lowering system complexity and the probability of failure.

[0004] Existing technologies related to integrated servo motors, such as Chinese patent application "An Integrated Servo Motor", application number: CN202421898599.0, disclose a motor body, which is covered with a shell with heat sinks. The shell includes a top plate, and several capacitors are installed below the top plate. A controller is installed on the top plate. The controller includes a top shell and a drive circuit board assembly installed inside the top shell. The top of the capacitors passes through the top plate and the top shell and is connected to the drive circuit board assembly.

[0005] However, existing integrated servo motors still have some shortcomings in terms of structural design and component layout, leaving room for further improvement. For example, the heat dissipation performance of some integrated servo motors is not ideal, leading to performance degradation or even damage to electronic components due to overheating during long-term operation or high-load work. To address these issues, this application proposes a novel integrated servo motor, aiming to further optimize its structural design and component layout, improve heat dissipation performance, and enhance system stability and reliability to meet a wider range of application needs. Utility Model Content

[0006] The technical problem to be solved by this application is to provide an integrated servo motor with optimized heat dissipation design and structural layout, which effectively improves the heat dissipation performance of the integrated servo motor.

[0007] The technical solution adopted in this application is: an integrated servo motor, including a drive box and a motor body. The motor body is covered with a heat dissipation base. The drive box is installed on the top surface of the heat dissipation base. The bottom surface of the drive box is partially coated with thermal grease. The thermal grease connects the drive box and the heat dissipation base. The drive box includes a shell and a control device. The shell is generally rectangular, and a cavity for installing the control device is formed inside the shell. The shell is made of die-cast aluminum.

[0008] Compared with existing technologies, the advantages of this application are as follows: First, thermal grease is applied locally at the contact point between the driver box and the heat sink base. This design effectively improves heat conduction efficiency. As a material with high thermal conductivity, thermal grease can fill the tiny gaps between the driver box and the heat sink base, reducing thermal resistance. This allows the heat generated by the driver box to be quickly and smoothly conducted to the heat sink base, and then dissipated into the surrounding environment through the heat sink base. This prevents heat from accumulating inside the driver box, effectively reducing the operating temperature of electronic components, extending their service life, and improving system reliability.

[0009] Secondly, the drive box uses an all-aluminum die-cast shell. Aluminum has excellent thermal conductivity, which can quickly conduct the heat generated by the internal electronic components to the shell surface. At the same time, the die-casting process makes the shell structure more compact, reducing heat loss inside and further improving the efficiency of heat conduction. This helps to better perform heat dissipation and enhances heat dissipation performance.

[0010] Furthermore, the aluminum die-cast housing not only offers excellent heat dissipation but also reduces production costs. Aluminum is a relatively economical metal, and the die-casting process is mature, efficient, and allows for large-scale production, thus lowering the unit cost. In addition, the die-cast housing possesses high strength and good surface quality, providing better protection for internal control devices and improving system reliability.

[0011] In some embodiments of this application, a cooling fan is installed inside the heat dissipation base, and thermally conductive silicone grease is applied to the bottom surface of the drive box near the cooling fan.

[0012] The cooling fan actively accelerates airflow, carrying away heat from the heatsink base. Thermal grease applied near the fan quickly transfers heat from the drive unit to the heatsink base, where the fan dissipates the heat. This combination further improves heat dissipation efficiency, ensuring the drive unit maintains a low operating temperature under high load or prolonged operation, thus extending the lifespan of electronic components.

[0013] In some embodiments of this application, a slot is provided on the bottom surface of the housing, and the slot is located on the side away from the cooling fan.

[0014] The slot design increases the contact area between the bottom surface of the casing and the air, improving airflow. The slot is located on the side away from the cooling fan, so it does not interfere with the heat transfer from the drive box to the heatsink base where the cooling fan is located via thermal grease.

[0015] In some embodiments of this application, the slot is rectangular. As a preferred structure, the rectangular slot design matches the rectangular structure of the bottom surface of the housing, allowing for better utilization of the space on the bottom surface and ensuring uniform airflow distribution across the entire bottom surface, thus improving heat dissipation. Simultaneously, the rectangular structure is relatively simple to process and manufacture, reducing production costs.

[0016] In some embodiments of this application, the control device includes a circuit board, the bottom surface of which is provided with a base, and the circuit board is mounted on the top surface of a heat sink base via the base.

[0017] The base design provides stable support for the circuit board, ensuring its stability during installation and operation. Simultaneously, the base can be made with a thermally conductive medium to further improve heat transfer efficiency between the circuit board and the heat sink, protecting the electronic components on the circuit board.

[0018] In some embodiments of this application, a predetermined distance exists between the bottom surface of the circuit board and the inner bottom surface of the housing.

[0019] By setting a predetermined spacing, an air gap can be formed between the circuit board and the bottom surface of the housing, reducing heat conduction from the bottom surface of the housing to the circuit board. This design can effectively reduce the impact of heat generated by heat-generating components (such as bipolar transistors) on other electronic components, improving the stability and reliability of the system.

[0020] In some embodiments of this application, a plurality of support pillars are provided on the inner bottom surface of the housing, and the support pillars are connected to the circuit board. The support pillars can provide stable support for the circuit board, ensuring the stability of the circuit board during installation and operation.

[0021] In some embodiments of this application, four support pillars are provided on the bottom surface of the outer casing corresponding to the four corners of the circuit board, and the support pillars are connected to the circuit board by locking components.

[0022] Installing support pillars at the four corners of the circuit board ensures its stability in all directions, preventing it from loosening or being damaged due to vibration or external forces. Using locking mechanisms further enhances the connection's robustness, ensuring the circuit board's reliability during long-term operation.

[0023] In some embodiments of this application, the circuit board is provided with a connection hole that passes through the circuit board and the base. The top surface of the heat sink is coaxially provided with a mounting hole. The circuit board and the heat sink are connected by a fastener, one end of which passes through the mounting hole and connects to the connection hole.

[0024] The use of connection holes and mounting holes ensures a secure connection between the circuit board and the heat sink, guaranteeing tight contact and improving heat transfer efficiency. The use of locking fasteners further enhances connection stability, ensuring the connection between the circuit board and the heat sink remains secure during extended operation, thus improving system reliability.

[0025] Preferably, the circuit board has two connection holes, and the top surface of the heat sink base has two mounting holes.

[0026] In some embodiments of this application, a plurality of heat sinks are arranged on the top surface of the inner wall of the heat sink base. The heat sinks are arranged along the axial direction of the motor body, and there is a gap between two adjacent heat sinks.

[0027] The design of the heat sink increases the heat dissipation area of ​​the heat sink base, improving heat dissipation efficiency. The heat sink is positioned along the axial direction of the motor body, which better guides airflow and removes more heat. The gaps between adjacent heat sinks ensure smooth airflow, preventing heat buildup and further enhancing heat dissipation performance.

[0028] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0029] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a side view of this application; Figure 3 for Figure 2 Sectional view of section AA; Figure 4 This is a schematic diagram of the internal structure of the driver box in this application; Figure 5 for Figure 4 Top view; Figure 6 for Figure 5 Sectional view of section BB.

[0031] The specific explanations of the reference numerals in the attached drawings are as follows: 1. Drive box; 2. Motor body; 3. Heat sink base; 4. Thermal grease; 5. Housing; 6. Control device; 7. Cooling fan; 8. Slot; 9. Circuit board; 10. Base; 11. Support column; 13. Connection hole; 14. Mounting hole; 16. Heat sink. Detailed Implementation

[0032] The present application will now be described in detail with reference to the accompanying drawings.

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0034] Integrated servo motor, Example 1 as follows Figures 1 to 6 As shown, the system includes a drive box 1 and a motor body 2. The motor body 2 is covered by a heat sink 3. The drive box 1 is mounted on the top surface of the heat sink 3. A portion of the bottom surface of the drive box 1 is coated with thermal grease 4, which connects the drive box 1 and the heat sink 3. This design effectively improves heat conduction efficiency. As a material with high thermal conductivity, the thermal grease 4 fills the tiny gaps between the drive box 1 and the heat sink 3, reducing thermal resistance. This allows the heat generated by the drive box 1 to be quickly and smoothly conducted to the heat sink 3, and then dissipated into the surrounding environment through the heat sink 3. This prevents heat accumulation inside the drive box 1, effectively reducing the operating temperature of electronic components, extending their lifespan, and improving system reliability.

[0035] The drive box 1 includes a housing 5 and a control device 6. The housing 5 has a rectangular parallelepiped structure, and a cavity is formed inside the housing 5 for mounting the control device 6. The housing 5 is made of die-cast aluminum. Aluminum has good thermal conductivity, which can quickly conduct the heat generated by the internal electronic components to the surface of the housing 5. At the same time, the die-casting process makes the structure of the housing 5 more compact, reducing heat loss inside and further improving the efficiency of heat conduction, which helps to better perform heat dissipation and improve heat dissipation performance.

[0036] The aluminum die-cast housing 5 not only offers excellent heat dissipation but also reduces production costs. Aluminum is a relatively economical metal material, and the die-casting process is mature and highly efficient, enabling large-scale production and thus lowering the unit cost. Furthermore, the die-cast housing 5 possesses high strength and good surface quality, providing better protection for the internal control devices 6 and improving system reliability.

[0037] Example 2, as Figures 1 to 6 As shown, a cooling fan 7 is installed inside the heat dissipation base 3, and thermal grease 4 is applied to the bottom surface of the drive box 1 near the cooling fan 7. The cooling fan 7 actively accelerates airflow to remove heat from the heat dissipation base 3, while the thermal grease 4 applied near the cooling fan 7 quickly conducts heat from the drive box 1 to the heat dissipation base 3, where it is then dissipated by the cooling fan 7. This combination further improves heat dissipation efficiency, ensuring that the drive box 1 maintains a low operating temperature under high load or long-term operation, thus extending the lifespan of electronic components.

[0038] The bottom surface of the outer casing 5 has a slot 8, which is located on the side away from the cooling fan 7. The design of the slot 8 increases the contact area between the bottom surface of the outer casing 5 and the air, improving airflow. The slot 8 is located on the side away from the cooling fan 7, so it does not affect the heat conduction from the drive box 1 to the heat sink 3 where the cooling fan 7 is located through the thermal grease 4.

[0039] The slot 8 is rectangular. As a preferred structure in this application, the rectangular slot 8 matches the rectangular structure of the bottom surface of the outer casing 5, allowing for better utilization of the space on the bottom surface of the outer casing 5, ensuring uniform airflow distribution across the entire bottom surface, and improving heat dissipation. Simultaneously, the rectangular structure is relatively simple to process and manufacture, reducing production costs.

[0040] The control device 6 includes a circuit board 9, with a base 10 on its bottom surface. The circuit board 9 is mounted on the top surface of the heat dissipation base 3 via the base 10. The base 10 is designed to provide stable support for the circuit board 9, ensuring its stability during installation and operation. Simultaneously, the base 10 can be made of a thermally conductive medium to further improve the heat transfer efficiency between the circuit board 9 and the heat dissipation base 3, protecting the electronic components on the circuit board 9.

[0041] There is a predetermined gap between the bottom surface of the circuit board 9 and the inner bottom surface of the housing 5. By setting the predetermined gap, an air gap can be formed between the circuit board 9 and the inner bottom surface of the housing 5, reducing heat conduction from the inner bottom surface of the housing 5 to the circuit board 9. This design can effectively reduce the impact of heat generated by heat-generating components (such as bipolar transistors) on other electronic components, improving the stability and reliability of the system.

[0042] The bottom surface of the outer casing 5 is provided with a plurality of support columns 11, which are connected to the circuit board 9. The support columns 11 can provide stable support for the circuit board 9, ensuring the stability of the circuit board 9 during installation and operation.

[0043] Four support pillars 11 are provided on the bottom surface of the outer casing 5, corresponding to the four corners of the circuit board 9. The support pillars 11 are connected to the circuit board 9 by locking components. Providing support pillars 11 at the four corners of the circuit board 9 ensures its stability in all directions, preventing it from loosening or being damaged due to vibration or external force. The locking components further enhance the connection's strength, ensuring the reliability of the circuit board 9 during long-term operation.

[0044] The circuit board 9 has a connection hole 13 that passes through both the circuit board 9 and the base 10. The top surface of the heat sink 3 is coaxially provided with a mounting hole 14, which is also connected to the connection hole 13. The circuit board 9 and the heat sink 3 are connected by a fastener, one end of which passes through the mounting hole 14 and connects to the connection hole 13. The connection hole 13 and mounting hole 14 ensure a secure connection between the circuit board 9 and the heat sink 3, guaranteeing tight contact and improving heat transfer efficiency. The fastener further enhances the stability of the connection, ensuring that the connection between the circuit board 9 and the heat sink 3 will not loosen during long-term operation, thus improving system reliability.

[0045] Preferably, the circuit board 9 is provided with two connection holes 13, and the top surface of the heat sink 3 is provided with two mounting holes 14.

[0046] The top surface of the inner wall of the heat dissipation base 3 is provided with multiple heat dissipation fins 16, which are arranged along the axial direction of the motor body 2, with gaps between adjacent heat dissipation fins 16. The design of the heat dissipation fins 16 increases the heat dissipation area of ​​the heat dissipation base 3, improving heat dissipation efficiency. The axial arrangement of the heat dissipation fins 16 along the motor body 2 better guides airflow, carrying away more heat. The gaps between adjacent heat dissipation fins 16 ensure smooth airflow, preventing heat accumulation and further improving heat dissipation performance.

[0047] The rest of the contents of Example 2 are the same as those of Example 1.

[0048] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An integrated servo motor, characterized by, The device includes a drive box (1) and a motor body (2). The motor body (2) is covered with a heat dissipation base (3). The drive box (1) is installed on the top surface of the heat dissipation base (3). The bottom surface of the drive box (1) is partially coated with thermal grease (4). The thermal grease (4) connects the drive box (1) and the heat dissipation base (3). The drive box (1) includes a shell (5) and a control device (6). The shell (5) is in the shape of a cuboid. The shell (5) has a cavity for installing the control device (6). The shell (5) is made of die-cast aluminum.

2. The integrated servo motor according to claim 1, characterized in that, A cooling fan (7) is installed inside the heat dissipation base (3), and thermal grease (4) is applied to the bottom surface of the drive box (1) near the cooling fan (7).

3. The integrated servo motor of claim 1, wherein, The bottom surface of the outer casing (5) is provided with a slot (8), which is located on the side away from the cooling fan (7).

4. The integrated servo motor according to claim 3, characterized in that, The slot (8) is rectangular.

5. The integrated servo motor of claim 1, wherein, The control device (6) includes a circuit board (9), and a base (10) is provided on the bottom surface of the circuit board (9). The circuit board (9) is mounted on the top surface of the heat dissipation base (3) through the base (10).

6. The integrated servo motor according to claim 5, characterized in that, There is a predetermined distance between the bottom surface of the circuit board (9) and the inner bottom surface of the outer casing (5).

7. The integrated servo motor of claim 1, wherein, The bottom surface of the outer shell (5) is provided with a number of support columns (11), and the support columns (11) are connected to the circuit board (9).

8. The integrated servo motor according to claim 7, characterized in that, The bottom surface of the outer shell (5) is provided with four support columns (11) corresponding to the four corners of the circuit board (9), and the support columns (11) are connected to the circuit board (9) by locking components.

9. The integrated servo motor according to claim 8, characterized in that, The circuit board (9) is provided with a connection hole (13), which passes through the circuit board (9) and the base (10). The top surface of the heat sink (3) is provided with a mounting hole (14) coaxially with the connection hole (13). The circuit board (9) and the heat sink (3) are connected by a fastener, and one end of the fastener passes through the mounting hole (14) and connects to the connection hole (13).

10. The integrated servo motor according to claim 1, characterized in that, The top surface of the inner wall of the heat dissipation base (3) is provided with a plurality of heat dissipation fins (16), which are arranged along the axial direction of the motor body (2) and there is a gap between two adjacent heat dissipation fins (16).

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