Heat dissipation type auto-focusing motor

Abstract

The utility model discloses a heat dissipation type automatic focusing motor, include: motor assembly, shell and wind power drive source, motor assembly sets up in the inside of shell, and wind power drive source sets up at the outside of shell, motor assembly includes a pair of magnet, motor carrier, motor upper cover, motor base, coil, first elastic sheet and second elastic sheet, and the outside of shell is provided with the air inlet and the air outlet, and the wind power output end of wind power drive source communicates the air inlet, and the inside of shell is provided with the first heat dissipation groove that spirally sets down, and the outer wall of a pair of magnet is provided with the second heat dissipation groove that spirally sets down, and the first heat dissipation groove is connected with the second heat dissipation groove and forms the heat dissipation channel, and the both ends of heat dissipation channel communicate the air inlet and the air outlet respectively, when wind power drive source drives and produces flowing air, and flowing air flows from the air inlet, and flows through heat dissipation channel and flows from the air outlet. The utility model has improved the heat dissipation performance of automatic focusing motor.

Description

Technical Field

[0001] This utility model relates to the field of focusing motor technology, and in particular to a heat-dissipating automatic focusing motor. Background Technology

[0002] With the development of modern technology, autofocus motors have been widely used in devices such as smartphones, digital cameras, and surveillance cameras. These devices place increasingly higher demands on motor performance, requiring not only high-precision focusing capabilities but also excellent heat dissipation to cope with the heat generated during prolonged high-load operation. While traditional autofocus motors have seen significant improvements in drive accuracy and response speed, they still have limitations in heat dissipation. Prolonged high-power operation can easily lead to excessively high internal temperatures in the motor components, affecting motor stability, lifespan, and even causing overheating damage.

[0003] Existing autofocus motor cooling methods primarily rely on the internal structure of the motor for heat conduction and dissipation. However, with the increase in motor power, traditional cooling methods alone are no longer sufficient to effectively meet the cooling demands of continuous high-power operation. To address this issue, some technical solutions attempt to add external cooling devices such as heat sinks or fins, but these solutions often increase the size and weight of the equipment, resulting in a less compact overall design that is unsuitable for the requirements of modern precision, small-scale equipment.

[0004] Furthermore, while some existing heat dissipation solutions incorporate ventilation holes and channels on the motor housing, these channels often fail to create efficient airflow circulation, hindering heat removal and impacting motor operation and overall equipment performance. Therefore, designing an autofocus motor with efficient heat dissipation capabilities without increasing equipment size has become a pressing issue in the current technological field. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a heat-dissipating autofocus motor to improve the heat dissipation performance of the autofocus motor while maintaining the overall structural compactness.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat-dissipating autofocus motor, comprising a motor assembly, a housing, and a wind-driven source, wherein the motor assembly is disposed inside the housing, and the wind-driven source is disposed outside the housing;

[0007] The motor assembly includes a pair of magnets, a motor carrier, a motor cover, a motor base, a coil, a first spring, and a second spring. The motor carrier is located at the center of the outer shell, and the coil is fixedly sleeved on the motor carrier. The first spring and the second spring are respectively fixedly connected to the upper and lower end faces of the motor carrier. The upper end of the first spring is fixedly connected to the motor cover, and the lower end of the second spring is fixedly connected to the motor base. The pair of magnets are arranged opposite to each other on the outside of the motor carrier, and the shape of the pair of magnets is adapted to the shape of the outer shell.

[0008] An air inlet and an air outlet are provided on the outer side of the outer shell. The wind power output end of the wind power drive source is connected to the air inlet. A first heat dissipation groove with a downward spiral is provided on the inner side of the outer shell. A second heat dissipation groove with a downward spiral is provided on the outer wall of the pair of magnets. The first heat dissipation groove and the second heat dissipation groove abut against each other to form a heat dissipation channel. The two ends of the heat dissipation channel are respectively connected to the air inlet and the air outlet.

[0009] When the wind power source drives the flow of air, the flow of air flows from the air inlet into the downward-facing heat dissipation channel, carries away the heat in the heat dissipation channel, and then flows out from the air outlet.

[0010] Furthermore, the wind power drive source includes a wind turbine, a vortex housing, and rotating blades. The output end of the wind turbine is fixedly connected to the center of the rotating blades, and the rotating blades are rotatably disposed inside the vortex housing.

[0011] When the wind turbine drives the rotating blades to rotate inside the vortex housing, flowing air is generated and flows from the output end of the vortex housing into the air inlet.

[0012] Furthermore, the air inlet is provided with an air guide assembly, which includes an air guide bracket and multiple air guide vanes, each of which is oscillatingly mounted on the air guide bracket.

[0013] Furthermore, the air guide assembly also includes a pair of linkage rods, which are rotatably disposed on both sides of each of the air guide vanes, and the air guide vanes are parallel to each other.

[0014] Furthermore, the heat dissipation channel is provided with a plurality of spirally distributed heat dissipation fins, and the extension direction of each heat dissipation fin is consistent with the extension direction of the heat dissipation channel.

[0015] Furthermore, the heat sink is provided with honeycomb-shaped heat dissipation holes evenly distributed on it.

[0016] Furthermore, a dustproof component is provided on the inner side of the air inlet. The dustproof component includes a dustproof bracket, a filter element, and a filter screen. The dustproof bracket is fixed on the inner side of the air inlet, the filter screen is fixed on the side of the dustproof bracket near the wind power drive source, and the filter element is fixed on the side of the dustproof bracket facing the air guide component.

[0017] The beneficial effects of this utility model are:

[0018] This invention, through the design of a unique heat dissipation channel structure, adopts the combination of a wind-driven source and a heat dissipation trough, which can effectively improve the heat dissipation capacity of the autofocus motor: the wind-driven source drives the airflow, which enters from the air inlet into the heat dissipation channel with a downward spiral structure, carries away the heat and is discharged through the air outlet. The design of the heat dissipation channel allows the airflow to cover the key areas of the motor components, thereby keeping the motor temperature within a reasonable range when working under high load, preventing overheating and extending the service life of the motor.

[0019] Meanwhile, the heat dissipation channel has a compact structure and is adapted to the shape of the motor housing and the outer wall of the magnet. It can effectively utilize the motor space to achieve efficient airflow and heat conduction. Compared with traditional heat sinks or radiators, the heat dissipation channel of this utility model not only improves heat dissipation efficiency, but also avoids the increase in the size and weight of the equipment by external additional components, ensuring the miniaturization and lightweight of the motor components, and meeting the strict requirements of modern small equipment for size and weight. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the heat dissipation type autofocus motor in this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the air guide component and the dustproof component in this utility model;

[0022] Figure 3 This is an internal cross-sectional view of the heat dissipation channel in this utility model.

[0023] Reference numerals: 1. Motor assembly; 11. Magnet; 12. Motor carrier; 13. Motor cover; 14. Motor base; 15. Coil; 16. First spring; 17. Second spring; 2. Housing; 21. Air inlet; 22. Air outlet; 3. Wind power drive source; 31. Wind turbine; 32. Vortex casing; 33. Rotating blade; 4. First heat dissipation groove; 5. Second heat dissipation groove; 6. Heat dissipation channel; 7. Air guide assembly; 71. Air guide bracket; 72. Air guide vane; 73. Linkage rod; 8. Heat sink; 9. Dustproof assembly; 91. Dustproof bracket; 92. Filter element; 93. Filter screen. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] Example 1, referring to Figure 1 This is the first embodiment of the present invention. This embodiment provides a heat-dissipating autofocus motor, which can improve the heat dissipation performance of the autofocus motor while maintaining the overall structural compactness. It includes a motor assembly 1, a housing 2 and a wind power drive source 3. The motor assembly 1 is disposed inside the housing 2 and the wind power drive source 3 is disposed outside the housing 2.

[0026] The motor assembly 1 includes a pair of magnets 11, a motor carrier 12, a motor cover 13, a motor base 14, a coil 15, a first spring 16, and a second spring 17. The motor carrier 12 is located at the center of the outer shell 2. The coil 15 is fixedly sleeved on the motor carrier 12. The first spring 16 and the second spring 17 are respectively fixedly connected to the upper and lower end faces of the motor carrier 12. The upper end of the first spring 16 is fixedly connected to the motor cover 13, and the lower end of the second spring 17 is fixedly connected to the motor base 14. The pair of magnets 11 are arranged opposite to each other on the outside of the motor carrier 12. The shape of the pair of magnets 11 is adapted to the shape of the outer shell 2.

[0027] An air inlet 21 and an air outlet 22 are provided on the outer side of the outer shell 2. The wind power output end of the wind power drive source 3 is connected to the air inlet 21. A first heat dissipation groove 4 is provided on the inner side of the outer shell 2, and a second heat dissipation groove 5 is provided on the outer wall of a pair of magnets 11, which is arranged in a spiral downward. The first heat dissipation groove 4 and the second heat dissipation groove 5 are joined together to form a heat dissipation channel 6. The two ends of the heat dissipation channel 6 are connected to the air inlet 21 and the air outlet 22 respectively.

[0028] When the wind-driven source 3 drives the flow of air, the air flows from the air inlet 21 into the downward-facing heat dissipation channel 6, carries away the heat in the heat dissipation channel 6, and then flows out from the air outlet 22.

[0029] Working principle of Example 1:

[0030] The motor carrier 12 is located at the center of the housing 2, serving a supporting function and fixing other components. A coil 15 is fixedly sleeved on the motor carrier 12. When current is applied to the coil 15, an electromagnetic field is generated, driving the motor's rotation. A pair of magnets 11 are respectively disposed on the outside of the motor carrier 12, interacting with the coil 15 to generate an electromagnetic force that drives the motor's rotation. The shape of the magnets 11 is adapted to the shape of the housing 2, effectively ensuring a uniform distribution of the magnetic field and improving driving efficiency. A first spring 16 and a second spring 17 are respectively connected to the upper and lower end faces of the motor carrier 12, fixing the motor cover 13 and the motor base 14. The two springs provide necessary elastic support to ensure the stability of the motor assembly 1 during autofocusing.

[0031] The outer side of the housing 2 has an air inlet 21 and an air outlet 22, which are connected to the air output end of the wind power source 3. The wind power source 3 provides airflow, which introduces air into the air inlet 21, removes heat through the heat dissipation channel 6, and is discharged through the air outlet 22. The design of the housing 2 ensures that the airflow can flow smoothly, achieving an effective heat dissipation effect.

[0032] The heat dissipation channel 6 consists of a first heat dissipation slot 4 and a second heat dissipation slot 5. The first heat dissipation slot 4 is located on the inner side of the outer casing 2 and is spiraled downwards to form an airflow path leading to the air outlet 22. The second heat dissipation slot 5 is located on the outer wall of the magnet 11 and also adopts a spiraling downwards design. The two are joined together to form a complete heat dissipation channel 6. Airflow passes through the connection between the first heat dissipation slot 4 and the second heat dissipation slot 5, carrying away heat from the heat dissipation area and dissipating it to the outside.

[0033] The wind power source 3 is typically an electric fan, which drives airflow to draw air in from the outside through the air inlet 21 and directs the airflow through the heat dissipation channel 6. The wind power source 3 can adjust the wind speed as needed, ensuring that the airflow maintains an appropriate speed during motor operation, thereby effectively reducing the internal temperature of the motor and preventing performance degradation due to overheating.

[0034] In this embodiment, when the wind power source 3 is started, airflow flows into the heat dissipation channel 6 through the air inlet 21, enters the first heat dissipation slot 4, and then flows downward along the path of the second heat dissipation slot 5, carrying away the heat generated by the motor, and finally being discharged through the air outlet 22. This process ensures that the heat-dissipating autofocus motor can maintain a low operating temperature under high load conditions, thereby improving the stability and lifespan of the motor.

[0035] Therefore, in this embodiment, the combination of wind power drive source 3 and heat dissipation slot can effectively improve the heat dissipation capacity of autofocus motor;

[0036] Preferred, Reference Figure 2The wind power drive source 3 includes a wind turbine 31, a vortex shell 32 and a rotating blade 33. The output end of the wind turbine 31 is fixedly connected to the center of the rotating blade 33, and the rotating blade 33 is rotatably disposed inside the vortex shell 32.

[0037] When the wind turbine 31 drives the rotating blades 33 to rotate inside the vortex shell 32, the resulting airflow flows from the output end of the vortex shell 32 into the air inlet 21.

[0038] Specifically, in this embodiment, the wind turbine 31 drives the rotating blades 33 to rotate inside the vortex shell 32. The air flow inside the vortex shell 32 forms a vortex and flows into the air inlet 21, providing an aerodynamic source for heat dissipation.

[0039] Example 2, refer to Figure 2 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an air guide assembly 7, which can further improve the heat dissipation efficiency of the heat dissipation type autofocus motor. The air inlet 21 is provided with the air guide assembly 7. The air guide assembly 7 includes an air guide bracket 71 and a plurality of air guide blades 72. Each air guide blade 72 is swayably mounted on the air guide bracket 71. The air guide assembly 7 also includes a pair of linkage rods 73. The pair of linkage rods 73 are rotatably arranged on both sides of each air guide blade 72, and the air guide blades 72 are parallel to each other.

[0040] Working principle of Example 2:

[0041] The main function of the air guide assembly 7 is to guide the air flowing into the air inlet 21, ensuring that the airflow is evenly distributed to the heat dissipation channel 6, thereby improving the overall heat dissipation effect. The air guide bracket 71, as the supporting structure of the entire air guide assembly 7, is fixedly installed inside the air inlet 21. The main function of the air guide bracket 71 is to provide support points for multiple air guide vanes 72 and ensure that each air guide vane 72 does not shift or fall off during movement. The bracket is designed using lightweight and high-strength materials to reduce additional weight while ensuring structural stability. The air guide vanes 72 are mounted on the air guide bracket 71 in a swingable manner, with both ends of each air guide vane 72 connected to the air guide bracket 71 via a rotating shaft. The shape and size of the air guide vanes 72 can be adjusted according to the specific needs of the heat dissipation channel 6 to ensure efficient airflow. Multiple air guide vanes 72 are arranged parallel to each other and can be adjusted according to airflow requirements. Each air guide vane 72 can swing independently to optimize the airflow path, reduce airflow resistance, and improve the uniformity of airflow.

[0042] To ensure that the guide vanes 72 can adjust their angles in a coordinated manner, this embodiment employs a pair of linkage rods 73. The linkage rods 73 are connected to both sides of each guide vane 72 via rotating shafts, and both linkage rods 73 can rotate simultaneously. When one linkage rod 73 rotates, it drives the other linkage rod 73 to rotate, thereby ensuring that the swing angle of all guide vanes 72 remains consistent. The design of the linkage rods 73 ensures the synchronization between the guide vanes 72 and effectively controls the airflow guiding effect of the entire air-guiding assembly 7.

[0043] When the heat-dissipating autofocus motor starts operating, the wind power source 3 activates and drives air into the air inlet 21. As the airflow passes through the air inlet 21, the air guide assembly 7 begins to function. Each guide vane 72 oscillates according to a set angle, making the incoming airflow direction more uniform and avoiding excessive concentration or unevenness in local airflow. The linkage rod 73 ensures that the angles of all guide vanes 72 are synchronized, ensuring efficient airflow guidance. The adjustability of the guide vanes 72 allows this assembly to flexibly change the airflow path according to actual operating conditions, optimizing airflow in different working environments. This design not only improves airflow but also enhances heat dissipation, especially under high load or long-term operation, effectively reducing the internal temperature of the motor and improving its stability and service life.

[0044] Example 3, referring to Figure 3 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides multiple heat sinks 8, which can further improve the heat dissipation efficiency of the heat-dissipating autofocus motor. The heat dissipation channel 6 is also provided with multiple spirally distributed heat sinks 8, and the extension direction of each heat sink 8 is consistent with the extension direction of the heat dissipation channel 6. The heat sinks 8 are uniformly provided with honeycomb-shaped heat dissipation holes.

[0045] Working principle of Example 3:

[0046] Multiple heat sinks 8 are arranged spirally along the extension direction of the heat dissipation channel 6. The extension direction of each heat sink 8 is consistent with that of the heat dissipation channel 6, ensuring maximum contact area between the air and the surface of the heat sink 8 as it flows through the channel. This spiral arrangement effectively increases the contact time between the air and the heat sink 8, improving heat exchange efficiency. Simultaneously, the spiral shape of the heat sinks 8 allows the airflow to rotate as it passes through the heat dissipation channel 6, contributing to uniform airflow and preventing localized airflow stagnation. The heat sinks 8 are made of non-magnetic material to avoid affecting the magnetic field of the magnet 11.

[0047] The surface of the heat sink 8 is uniformly covered with honeycomb-shaped ventilation holes. This arrangement significantly increases the surface area of ​​the heat sink 8, thereby improving heat transfer efficiency. The honeycomb structure effectively disperses the airflow path, allowing for more thorough heat exchange between the air and the surface of the heat sink 8 as it flows through it. The size and spacing of each ventilation hole were precisely designed based on experimental and practical requirements to ensure both sufficient airflow and high heat dissipation efficiency.

[0048] Preferably, a dustproof component 9 is also provided on the inner side of the air inlet 21. The dustproof component 9 includes a dustproof bracket 91, a filter element 92 and a filter screen 93. The dustproof bracket 91 is fixed on the inner side of the air inlet 21, the filter screen 93 is fixed on the side of the dustproof bracket 91 close to the wind power drive source 3, and the filter element 92 is fixed on the side of the dustproof bracket 91 facing the air guide component 7.

[0049] Specifically, in this embodiment, when the wind power source 3 is started, air flows into the system from the air inlet 21 and undergoes preliminary filtration through the dustproof component 9. First, the air flows through the filter screen 93, which captures larger dust and impurities, ensuring that large particles do not enter the air duct and motor. Next, the remaining airflow continues to pass through the filter element 92, which further filters fine particles in the air, ensuring that the air entering the air guide component 7 is cleaner.

[0050] Air that has undergone two stages of filtration enters the air guide assembly 7 and flows into the heat dissipation channel 6 under the guidance of the air guide vanes 72. Because the air has been effectively filtered, dust and impurities are prevented from accumulating on key components such as the heat sink 8 and the air drive source 3, thereby preventing problems such as decreased efficiency of the heat dissipation system, component wear or blockage.

[0051] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A heat dissipating type auto-focusing motor characterized by, It includes a motor assembly (1), a housing (2) and a wind power drive source (3), wherein the motor assembly (1) is disposed inside the housing (2) and the wind power drive source (3) is disposed outside the housing (2); The motor assembly (1) includes a pair of magnets (11), a motor carrier (12), a motor cover (13), a motor base (14), a coil (15), a first spring (16) and a second spring (17). The motor carrier (12) is located at the center of the outer shell (2). The coil (15) is fixedly sleeved on the motor carrier (12). The first spring (16) and the second spring (17) are respectively fixedly connected to the upper and lower end faces of the motor carrier (12). The upper end of the first spring (16) is fixedly connected to the motor cover (13), and the lower end of the second spring (17) is fixedly connected to the motor base (14). The pair of magnets (11) are arranged opposite to each other on the outside of the motor carrier (12). The shape of the pair of magnets (11) is adapted to the shape of the outer shell (2). An air inlet (21) and an air outlet (22) are provided on the outer side of the outer shell (2). The wind power output end of the wind power drive source (3) is connected to the air inlet (21). A first heat dissipation groove (4) is provided on the inner side of the outer shell (2). A second heat dissipation groove (5) is provided on the outer wall of the pair of magnets (11). The first heat dissipation groove (4) and the second heat dissipation groove (5) are joined together to form a heat dissipation channel (6). The two ends of the heat dissipation channel (6) are respectively connected to the air inlet (21) and the air outlet (22). When the wind power source (3) drives the flow of air, the flow of air flows from the air inlet (21) into the downward-facing heat dissipation channel (6), carries away the heat in the heat dissipation channel (6), and then flows out from the air outlet (22).

2. The heat dissipating type auto focus motor according to claim 1, characterized by: The wind power drive source (3) includes a wind turbine (31), a vortex shell (32) and a rotating blade (33). The output end of the wind turbine (31) is fixedly connected to the center of the rotating blade (33), and the rotating blade (33) is rotatably disposed inside the vortex shell (32). When the wind turbine (31) drives the rotating blade (33) to rotate inside the vortex shell (32), flowing air is generated and flows from the output end of the vortex shell (32) into the air inlet (21).

3. The heat dissipating auto-focusing motor according to claim 1, characterized by: The air inlet (21) is provided with an air guide assembly (7), which includes an air guide bracket (71) and multiple air guide vanes (72). Each air guide vane (72) is swayably mounted on the air guide bracket (71).

4. The heat dissipating type auto focus motor according to claim 3, characterized by: The air guide assembly (7) also includes a pair of linkage rods (73), which are rotatably disposed on both sides of each of the air guide vanes (72), and the air guide vanes (72) are parallel to each other.

5. The heat dissipating auto focus motor according to claim 1, characterized in that: The heat dissipation channel (6) is further provided with a plurality of spirally distributed heat dissipation fins (8), and the extension direction of each heat dissipation fin (8) is consistent with the extension direction of the heat dissipation channel (6).

6. The heat dissipating auto focus motor according to claim 5, wherein: The heat sink (8) has honeycomb-shaped heat dissipation holes evenly distributed on it.

7. The heat dissipating auto focus motor according to claim 3, wherein: The air inlet (21) is also provided with a dustproof component (9). The dustproof component (9) includes a dustproof bracket (91), a filter element (92) and a filter screen (93). The dustproof bracket (91) is fixed inside the air inlet (21). The filter screen (93) is fixed inside the dustproof bracket (91) on the side close to the wind power drive source (3). The filter element (92) is fixed inside the dustproof bracket (91) on the side facing the air guide component (7).

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