A dust-free heat dissipation micro motor

Abstract

The present application provides a dust-free heat dissipation micro motor, which relates to a micro motor, including a motor housing, a stator installed inside the motor housing, a rotor arranged inside the stator, and a transmission output shaft. The present application cooperates with each other through the provision of a primary heat dissipation mechanism, a secondary heat dissipation mechanism, and a guide tube, so that the transmission output shaft and the rotating drum synchronously drive the built-in fan blades in the primary heat dissipation mechanism and the secondary heat dissipation mechanism to rotate synchronously while rotating. The built-in fan blades generate negative pressure on one side of the inside of the rotating drum during the rotation process, so that the external airflow is input into the inside of the rotating drum through the shaft tube, and passes through the first heat conduction mechanism and the second heat conduction mechanism in sequence. The air takes away the heat transferred from the heat dissipation fins during the flow process, thereby effectively realizing the stable operation of the micro motor, and solving the problem in the prior art that the heat dissipation effect of the micro motor is poor when the space near the motor housing is small and the air has poor fluidity in the natural state.

Description

Technical Field

[0001] The present invention relates to the field of micro motors, and in particular to a dust-free heat dissipation micro motor. Background Art

[0002] A micro motor is a type of motor with a small size and capacity, an output power generally below a few hundred watts, and special requirements for use, performance and environmental conditions. A micro motor refers to a motor with a diameter less than 160mm or a rated power less than 750W. Micro motors are often used in control systems or transmission mechanical loads to realize functions such as detection, analytical calculation, amplification, execution or conversion of electromechanical signals or energy.

[0003] When the micro motor is powered on to drive the output shaft to rotate, a certain amount of heat will be generated inside the motor. If the high temperature inside the motor continues, it is very unfavorable for the stable driving of the motor. Therefore, in order to achieve better heat dissipation, traditional micro motors usually have multiple through grooves on the surface of the motor housing. Through the through grooves, the motor housing and the external air can communicate and achieve better heat dissipation when the motor is working.

[0004] However, in the actual use of the above-mentioned micro motor, if the space around the motor housing is relatively closed, the gas flow is poor, which leads to a corresponding deterioration in the heat dissipation effect during the use of the motor. In addition, most motors are exposed to the outside world for use. During the heat dissipation of the housing through the through grooves, dust will also enter the inside of the motor housing. Long-term dust accumulation is not conducive to the stable use of the motor. In addition, due to the small size of the micro motor, it is inconvenient to clean the dust.

[0005] Therefore, we made improvements on this and proposed a dust-free heat dissipation micro motor. Summary of the invention

[0006] The purpose of the present invention is to provide a dust-free heat dissipation micro motor. By setting a first positioning mechanism, a second positioning mechanism, a primary heat dissipation mechanism and a secondary heat dissipation mechanism, etc., the problem that the current traditional micro motor has poor heat dissipation effect and is easy to adhere to dust inside, which is not conducive to the stable use of the motor is solved.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0008] A dust-free heat dissipation micro motor is provided to improve the above problems.

[0009] The present application is specifically as follows: it includes a motor housing, a stator installed inside the motor housing, a rotor arranged in the stator and a transmission output shaft, the inner side of the rotor is fixedly connected to a rotating drum, both sides of the upper surface of the rotating drum are rotatably installed with axial retainers through bearings, a guide cylinder is fixedly connected to the center of the inside of the rotating drum, positioning grooves are opened at the centers of both sides of the guide cylinder, swirl grooves are opened on both sides of the guide cylinder near the positioning grooves, the rotating drum is symmetrically installed with a primary heat dissipation mechanism and a secondary heat dissipation mechanism through the positioning grooves, one side of the motor housing is fixedly connected to an end protection cover by bolts, the center of the end protection cover is provided with an axial through pipe connected to one end of the rotating drum, the surface of the end protection cover is provided with a first positioning mechanism for positioning the primary heat dissipation mechanism, and the side of the motor housing away from the end protection cover is provided with a second positioning mechanism for positioning the secondary heat dissipation mechanism;

[0010] The primary heat dissipation mechanism comprises a rotating rod clamped in one of the positioning grooves, the surface of the rotating rod is fixedly connected with a built-in fan blade, the surface of the rotating rod is fixedly connected with a sliding support frame near the built-in fan blade, a clamping groove is opened on one side of the sliding support frame, and the sliding support frame is clamped with a resistance mechanism through the clamping groove, the primary heat dissipation mechanism and the secondary heat dissipation mechanism have the same structure, and the transmission output shaft is fixedly connected to the rotating rod in the primary heat dissipation mechanism;

[0011] A first guide limit groove and a second guide limit groove are symmetrically provided on both sides of the rotating drum, and a first heat conduction mechanism and a second heat conduction mechanism are symmetrically provided on both sides of the guide drum;

[0012] The first heat-conducting mechanism includes a plurality of heat-conducting fins, and the plurality of heat-conducting fins are evenly and equidistantly arranged in a circular array to form a conical cylinder, and the backs of the plurality of heat-conducting fins are fixedly connected to a heat-conducting seat, and the heat-conducting fins are fixedly connected to the inner wall of the rotating cylinder through the heat-conducting seat. The first heat-conducting mechanism and the second heat-conducting mechanism have the same structure.

[0013] As a preferred technical solution of the present application, external heat sinks are installed on the outer surface of the motor housing. The number of the external heat sinks is several and the several external heat sinks are evenly and equidistantly distributed on the outside of the motor housing.

[0014] As a preferred technical solution of the present application, the first positioning mechanism includes a first side cover, a surface of the first side cover is threadedly connected with a first connecting bolt, a first through groove is opened inside the first side cover, and the first positioning mechanism is connected to the end protection cover through the first connecting bolt, and the second positioning mechanism includes a second side cover, a surface of the second side cover is threadedly connected with a second bolt, a second through groove is opened inside the second side cover, and the second side cover is connected to the other side of the motor housing through the second bolt.

[0015] As a preferred technical solution of the present application, a dustproof sheet is fixedly connected to the surface of the shaft through tube, and the material of the dustproof sheet is high manganese steel.

[0016] As a preferred technical solution of the present application, the interference mechanism includes a interference ring, both ends of one side of the interference ring are fixedly connected to a limiting rod, the limiting rod is clamped with the sliding support frame through a slot, and a ball is embedded and installed on one side of the interference ring.

[0017] As a preferred technical solution of the present application, the axial retainer is fixedly installed on the inner side of the motor housing, and the vertical cross-section of the positioning groove is an equilateral hexagon and is adapted to the end of the rotating rod.

[0018] As a preferred technical solution of the present application, the axial through-tube is fixedly connected to the rotating drum, and the two built-in fan blades are respectively placed inside the corresponding first heat conducting mechanism and the second heat conducting mechanism.

[0019] As a preferred technical solution of the present application, the two sliding support frames are slidably connected to the rotating drum through a first guide limiting groove and a second guide limiting groove respectively.

[0020] As a preferred technical solution of the present application, the centers of the motor housing, the rotating drum, the rotating rod, the guide tube, the shaft through tube and the end protection cover are all located on the same axis.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the scheme of this application:

[0023] 1. The primary heat dissipation mechanism, the secondary heat dissipation mechanism and the guide tube cooperate with each other, so that the transmission output shaft and the drum rotate and synchronously drive the built-in fan blades in the primary heat dissipation mechanism and the secondary heat dissipation mechanism to rotate synchronously. The built-in fan blades generate negative pressure on one side of the drum during rotation, so that the external airflow is input into the drum through the shaft pipe, and passes through the first heat conduction mechanism and the second heat conduction mechanism in sequence. The air takes away the heat transferred on the heat dissipation fins during the flow, thereby effectively realizing the stable operation of the micro motor. Moreover, through the two conical cylindrical heat dissipation fins, when the air flows in through one end of the shaft pipe, it is guided by the multiple heat dissipation fins in the first heat conduction mechanism, so that the inflowing air can be relatively gathered during the flow so that it can flow into the swirl groove better. The air flowing out of the swirl groove forms a tendency to disperse outward through the second heat conduction mechanism, so that the air can form a better contact with the heat dissipation fins in the first heat conduction mechanism and the second heat conduction mechanism, which is conducive to better flow and heat dissipation, and solves the problem in the prior art that the space near the motor housing is small and the air has poor fluidity in the natural state, resulting in poor heat dissipation effect of the micro motor;

[0024] 2. The interference mechanism, the first positioning mechanism and the second positioning mechanism cooperate with each other, so that the dust of the motor can flow along the axial direction of the inner drum with the air during the rotation and heat dissipation process, thereby improving the heat dissipation effect of the motor. In addition, the first side cover and the second side cover can effectively block the edge of the drum, thereby effectively blocking the dust, thus solving the problem in the prior art that the dust can easily fall into the inner side of the motor housing due to the through grooves on the surface of the motor housing;

[0025] 3. By cooperating with the first positioning mechanism and the second positioning mechanism, the first connecting bolt and the second bolt are rotated to open the first side cover and the second side cover, take out the interference mechanism inside thereof, and rotate the primary heat dissipation mechanism and the secondary heat dissipation mechanism to make them slide out through the first guide limit groove and the second guide limit groove, thereby realizing the disassembly of the primary heat dissipation mechanism and the secondary heat dissipation mechanism, thereby facilitating the cleaning of dust and impurities thereon and facilitating daily maintenance by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the dust-free heat dissipation micro motor provided in this application;

[0027] Figure 2 A schematic diagram of the cutaway structure of the motor housing of the dust-free heat dissipation micro motor provided in this application;

[0028] Figure 3 A schematic diagram of the cross-section structure of the rotary drum of the dust-free heat dissipation micro motor provided in this application;

[0029] Figure 4 A schematic diagram of the unfolded structure of the drum of the dust-free heat dissipation micro motor provided in this application;

[0030] Figure 5 A schematic diagram of the structure of the first heat conduction mechanism of the dust-free heat dissipation micro motor provided in this application;

[0031] Figure 6 The dust-free heat dissipation micro motor provided in this application Figure 3 The enlarged structural diagram at A in the middle;

[0032] Figure 7 A schematic diagram of the structure of the interference mechanism of the dust-free heat dissipation micro motor provided in this application;

[0033] Figure 8 The dust-free heat dissipation micro motor provided in this application Figure 7 Enlarged structural diagram at B in the middle.

[0034] Indicated in the figure:

[0035] 1. Motor housing; 2. Stator; 3. Rotor; 4. Drum; 5. Axial cage; 6. Positioning groove;

[0036] 7. Primary heat dissipation mechanism; 701. Rotating rod; 702. Built-in fan blades; 703. Sliding support frame; 704. Card slot;

[0037] 8. Secondary heat dissipation mechanism; 9. End protection cover; 10. Shaft through pipe;

[0038] 11. first positioning mechanism; 1101. first side cover; 1102. first through slot;

[0039] 12. second positioning mechanism; 1201. second side cover; 1202. second through slot;

[0040] 13. First guide limit groove; 14. Second guide limit groove; 15. Guide tube; 16. Swirl groove;

[0041] 17. first heat conducting mechanism; 1701. heat dissipating fins; 1702. heat conducting seat;

[0042] 18. Second heat conduction mechanism; 19. External heat sink; 20. Transmission output shaft; 21. Resistance ring; 22. Limit rod; 23. Dustproof sheet; 24. Ball. DETAILED DESCRIPTION

[0043] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0044] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0048] See also Figures 1 to 8 The present invention provides a technical solution: a dust-free heat dissipation micro motor,

[0049] The micro motor comprises a motor housing 1, a stator 2 installed inside the motor housing 1, a rotor 3 arranged inside the stator 2, and a transmission output shaft 20. An external heat sink 19 is installed on the outer surface of the motor housing 1. The number of the external heat sink 19 is several, and the several external heat sinks 19 are evenly and equidistantly distributed on the outer side of the motor housing 1. Through the arrangement of multiple external heat sinks 19, the heat on the surface of the motor housing 1 can be transferred, and the direct contact between the external heat sink 19 and the outside air is beneficial to better heat dissipation of the micro motor. A rotating drum 4 is fixedly connected to the inner side of the rotor 3. The first guide limit groove 13 and the second guide limit groove 14 are symmetrically opened on both sides of the inside of the rotating drum 4. The upper surface of the rotating drum 4 Axial retainers 5 are rotatably installed on both sides through bearings, and the axial retainers 5 are fixedly installed on the inner side of the motor housing 1. The two axial retainers 5 are symmetrically arranged inside the motor housing 1. The arrangement of the two axial retainers 5 ensures the stable rotation of the drum 4 when the micro motor is powered on and started. A guide cylinder 15 is fixedly connected to the center of the drum 4. Positioning grooves 6 are provided at the centers of both sides of the guide cylinder 15. Swirl grooves 16 are provided on both sides of the guide cylinder 15 near the positioning grooves 6. The number of swirl grooves 16 is several. Through the arrangement of the swirl grooves 16, the air flowing into the drum 4 can be guided and diverted, so that the air can flow better, which is beneficial to its subsequent heat dissipation. The first-level heat dissipation mechanism 7 and the second-level heat dissipation mechanism 8 are symmetrically installed through the positioning groove 6. An end protection cover 9 is fixedly connected to one side of the motor housing 1 by bolts. The bolts on the end protection cover 9 are taken out to realize the disassembly of the end protection cover 9. An axial through-tube 10 connected to one end of the rotating drum 4 is provided at the center of the end protection cover 9. The axial through-tube 10 is fixedly connected to the rotating drum 4. A dustproof sheet 23 is fixedly connected to the surface of the axial through-tube 10. The material of the dustproof sheet 23 is high manganese steel. During the installation process, the end protection cover 9 is clamped to one side of the motor housing 1 so that the inner side of the end protection cover 9 is tightly attached to the surface of the dustproof sheet 23, and the bolts on the end protection cover 9 are turned to realize the removal of the end protection cover 9. The motor housing 1 is provided with a first positioning mechanism 11 for positioning the primary heat dissipation mechanism 7, and a second positioning mechanism 12 for positioning the secondary heat dissipation mechanism 8 is provided on the side of the motor housing 1 away from the end protection cover 9. The two sliding support frames 703 are slidably connected to the drum 4 through the first guide limit groove 13 and the second guide limit groove 14, respectively.

[0050] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the primary heat dissipation mechanism 7 includes a rotating rod 701 clamped in one of the positioning grooves 6, the centers of the motor housing 1, the rotating drum 4, the rotating rod 701, the guide tube 15, the shaft through tube 10 and the end protection cover 9 are all on the same axis, the vertical section of the positioning groove 6 is an equilateral hexagon and is adapted to the end of the rotating rod 701, the surface of the rotating rod 701 is fixedly connected with a built-in fan blade 702, the surface of the rotating rod 701 is fixedly connected with a sliding support frame 703 near the built-in fan blade 702, a clamping groove 704 is provided on one side of the sliding support frame 703, and the sliding support frame 703 is clamped with a resistance mechanism through the clamping groove 704, the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8 have the same structure, and the transmission The dynamic output shaft 20 is fixedly connected with the rotating rod 701 in the primary heat dissipation mechanism 7, and the sliding support frame 703 on the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8 respectively passes through one end of the rotating cylinder 4 and one end of the shaft through tube 10 and slides along the corresponding first guide limit groove 13 and second guide limit groove 14 to the inside of the rotating cylinder 4. When it slides to the bottom, it rotates along the first guide limit groove 13 and the second guide limit groove 14. At this time, the positions of the rotating rod 701 and the positioning groove 6 correspond to each other. Then, after the sliding support frame 703 is pushed inward to be placed in the specified position, the rotating rod 701 is snapped into the inside of the positioning groove 6, and the assembly of the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8 is completed;

[0051] Specifically, when in use, the micro motor is energized to drive the rotating drum 4 to rotate through the cooperation of the stator 2 and the rotor 3. During the rotation, the rotating drum 4 drives the rotating rod 701 in the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8 to rotate. The rotation of the rotating rod 701 causes the built-in fan blades 702 thereon to rotate synchronously. During the rotation, the built-in fan blades 702 generate negative pressure on one side of the interior of the rotating drum 4, so that the external airflow is input into the interior of the rotating drum 4 through the shaft tube 10, thereby realizing the heat dissipation inside the motor.

[0052] like Figure 3 , Figure 7 , Figure 8 As shown, the interference mechanism includes an interference ring 21, and both ends of one side of the interference ring 21 are fixedly connected to the limit rod 22, and the limit rod 22 is clamped with the sliding support frame 703 through the clamping groove 704. A ball 24 is embedded and installed on one side of the interference ring 21. After the first-level heat dissipation mechanism 7 and the second-level heat dissipation mechanism 8 are assembled, the corresponding interference mechanism is slid inside the rotating drum 4, so that the limit rod 22 on it is clamped in the clamping groove 704 on the first-level heat dissipation mechanism 7 and the second-level heat dissipation mechanism 8;

[0053] like Figure 4 , Figure 5As shown, the first heat conducting mechanism 17 and the second heat conducting mechanism 18 are symmetrically arranged on both sides of the guide tube 15, and the two built-in fan blades 702 are respectively placed inside the corresponding first heat conducting mechanism 17 and the second heat conducting mechanism 18;

[0054] Among them, the first heat-conducting mechanism 17 includes a plurality of heat-dissipating fins 1701, and the plurality of heat-dissipating fins 1701 are evenly and equidistantly enclosed in a circular array to form a conical cylinder. The arrangement of the plurality of heat-dissipating fins 1701 can effectively increase the heat-dissipating area of ​​the rotating drum 4, so that the flowing air can dissipate heat to the micro-motor more effectively, and the backs of the plurality of heat-dissipating fins 1701 are fixedly connected with a heat-conducting seat 1702, and the heat-dissipating fins 1701 are fixedly connected to the inner wall of the rotating drum 4 through the heat-conducting seat 1702, and the first heat-conducting mechanism 17 and the second heat-conducting mechanism 18 have the same structure;

[0055] Among them, through the two conical cylinders, when air flows in through one end of the axial through-tube 10, it is guided by the multiple heat dissipation fins 1701 in the first heat conduction mechanism 17, so that the inflowing air can be relatively gathered during the flow process so that it can flow into the inside of the swirl groove 16 better. The air flowing out of the swirl groove 16 forms a tendency to disperse outward through the second heat conduction mechanism 18, so that the air can form a better contact with the heat dissipation fins 1701 in the first heat conduction mechanism 17 and the second heat conduction mechanism 18, which is conducive to better flow and heat dissipation;

[0056] Specifically, when in use, the heat generated by the micromotor will be transferred to the multiple heat dissipation fins 1701 through the heat conductive seat 1702. When the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8 generate negative pressure inside the rotating drum 4 to promote air flow, the heat transferred to the heat dissipation fins 1701 will be taken away during the flow, thereby effectively realizing the stable operation of the micromotor, solving the problem in the prior art that the heat dissipation effect of the micromotor is poor when the space near the motor casing is small and the air has poor fluidity in a natural state.

[0057] The first positioning mechanism 11 includes a first side cover 1101, the surface of the first side cover 1101 is threadedly connected with a first connecting bolt, and the first side cover 1101 is provided with a first through groove 1102. The first side cover 1101 in the first positioning mechanism 11 is clamped to one side of the end protection cover 9, and one end of the first side cover 1101 is inserted into the interior of the shaft through tube 10, so that it forms a resistance to the resistance ring 21 on the resistance mechanism on one side of the primary heat dissipation mechanism 7. The first connecting bolt is rotated to fix the first side cover 1101, so as to form a better dustproof barrier for the connection between the shaft through tube 10 and the end protection cover 9, and at the same time, the resistance mechanism on one side of the primary heat dissipation mechanism 7 can be limited so that its upper limit rod 2 2 will not slide, so that the primary heat dissipation mechanism 7 is more stable during use. The second positioning mechanism 12 includes a second side cover 1201. The surface of the second side cover 1201 is threadedly connected with a second bolt. The second side cover 1201 is provided with a second through slot 1202. The first positioning mechanism 11 is connected to the end protection cover 9 through a first connecting bolt. Similarly, the second side cover 1201 on the second positioning mechanism 12 is clamped to one side of the rotating drum 4, and the second bolt is rotated to form a resistance to the secondary heat dissipation mechanism 8, so that the secondary heat dissipation mechanism 8 will not shake during the rotation of the rotating drum 4. The second side cover 1201 is connected to the other side of the motor housing 1 through the second bolt.

[0058] The arrangement of the ball bearings 24 can reduce the friction force of the relative sliding when the abutment ring 21 abuts against the first positioning mechanism 11 and the second positioning mechanism 12, and ensure the stability of the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8 provided by the abutment mechanism.

[0059] Specifically, when in use, the first connecting bolt and the second bolt are rotated to open the first side cover 1101 and the second side cover 1201, the interference mechanism inside thereof is taken out, and the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8 are rotated to make them slide out through the first guide limit groove 13 and the second guide limit groove 14, thereby realizing the disassembly of the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8, thereby facilitating the cleaning of dust and impurities thereon and facilitating daily maintenance by the staff.

[0060] Specifically, when the dust-free heat dissipation micromotor needs to be cleaned inside during use, the first connecting bolt and the second bolt on the first positioning mechanism 11 and the second positioning mechanism 12 are rotated to disassemble them, and then the bolts on the end protection cover 9 are rotated. After the end protection cover 9 is disassembled, the two interference mechanisms in the rotating drum 4 are pulled outward to disengage the limiting rods 22 thereon from the corresponding card slots 704, and then the primary heat dissipation mechanism 7 and the secondary heat dissipation mechanism 8 are pulled outward along the first guide limiting groove 13 and the second guide limiting groove 14 respectively, and then after rotating, they are pulled outward again to be taken out, so that the disassembled structure and the interior of the rotating drum 4 can be cleaned, which is convenient for the maintenance operation of the staff.

[0061] Specifically, when the dust-free heat dissipation micro motor is in use: the external power supply is turned on, and the cooperation between the stator 2 and the rotor 3 drives the rotating drum 4 to rotate, and the rotating drum 4 simultaneously drives the shaft through tube 10 thereon to rotate, and the built-in fan blades 702 of the shaft through tube 10 and the first-level heat dissipation mechanism 7 and the second-level heat dissipation mechanism 8 rotate, so that negative pressure can be generated inside, so that the outside air flows axially into the inside of the rotating drum 4, and the heat inside is taken away during the air flow, and the heat generated by the micro motor when it is working can be transferred through the cooperation of the first heat conduction mechanism 17 and the second heat conduction mechanism 18. Through the two conical cylinders, when air flows in through one end of the axial through tube 10, it is guided by the multiple heat dissipation fins 1701 in the first heat-conducting mechanism 17, so that the inflowing air can be relatively gathered during the flow process so that it can better flow into the interior of the swirl groove 16. The air flowing out of the swirl groove 16 forms a tendency to disperse outward through the second heat-conducting mechanism 18, so that the air can form a better contact with the heat dissipation fins 1701 in the first heat-conducting mechanism 17 and the second heat-conducting mechanism 18, and the heat on the surface of the heat dissipation fins 1701 is taken away by the flowing air, thereby achieving a better heat dissipation effect.

[0062] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A dust-free heat dissipation micro motor, comprising a motor housing (1), a stator (2) installed inside the motor housing (1), a rotor (3) arranged inside the stator (2), and a transmission output shaft (20), characterized in that: A rotating drum (4) is fixedly connected to the inner side of the rotor (3); axial retainers (5) are rotatably mounted on both sides of the upper surface of the rotating drum (4) via bearings; a guide drum (15) is fixedly connected to the center of the rotating drum (4); positioning grooves (6) are provided at the centers of both sides of the guide drum (15); swirl grooves (16) are provided on both sides of the guide drum (15) near the positioning grooves (6); a primary heat dissipation mechanism (7) and a secondary heat dissipation mechanism (8) are symmetrically mounted on the rotating drum (4) via the positioning grooves (6); an end protection cover (9) is fixedly connected to one side of the motor housing (1) via bolts; an axial through pipe (10) connected to one end of the rotating drum (4) is provided at the center of the end protection cover (9); a first positioning mechanism (11) for positioning the primary heat dissipation mechanism (7) is provided on the surface of the end protection cover (9); and a second positioning mechanism (12) for positioning the secondary heat dissipation mechanism (8) is provided on the side of the motor housing (1) away from the end protection cover (9); The primary heat dissipation mechanism (7) comprises a rotating rod (701) that is clamped inside one of the positioning grooves (6); a built-in fan blade (702) is fixedly connected to the surface of the rotating rod (701); a sliding support frame (703) is fixedly connected to the surface of the rotating rod (701) near the built-in fan blade (702); a clamping groove (704) is provided on one side of the sliding support frame (703); a resistance mechanism is clamped on the sliding support frame (703) via the clamping groove (704); the primary heat dissipation mechanism (7) and the secondary heat dissipation mechanism (8) have the same structure; the transmission output shaft (20) is fixedly connected to the rotating rod (701) in the primary heat dissipation mechanism (7); A first guide limit groove (13) and a second guide limit groove (14) are symmetrically provided on both sides of the rotating cylinder (4), and a first heat conduction mechanism (17) and a second heat conduction mechanism (18) are symmetrically provided on both sides of the guide cylinder (15); The first heat-conducting mechanism (17) comprises a plurality of heat-conducting fins (1701), the number of the heat-conducting fins (1701) being equidistant and evenly arranged in a circular array to form a conical cylinder, and the backs of the plurality of heat-conducting fins (1701) are fixedly connected to a heat-conducting seat (1702), the heat-conducting fins (1701) being fixedly connected to the inner wall of the rotating drum (4) via the heat-conducting seat (1702), and the first heat-conducting mechanism (17) and the second heat-conducting mechanism (18) having the same structure.

2. A dust-free heat dissipation micromotor according to claim 1, characterized in that: External heat sinks (19) are installed on the outer surface of the motor housing (1), and the number of the external heat sinks (19) is a plurality, and the plurality of external heat sinks (19) are evenly and equidistantly distributed on the outside of the motor housing (1).

3. A dust-free heat dissipation micromotor according to claim 1, characterized in that: The first positioning mechanism (11) comprises a first side cover (1101), a surface of the first side cover (1101) being threadedly connected to a first connecting bolt, a first through slot (1102) being provided inside the first side cover (1101), the first positioning mechanism (11) being connected to the end protection cover (9) via the first connecting bolt, and the second positioning mechanism (12) comprising a second side cover (1201), a surface of the second side cover (1201) being threadedly connected to a second bolt, a second through slot (1202) being provided inside the second side cover (1201), and the second side cover (1201) being connected to the other side of the motor housing (1) via the second bolt.

4. A dust-free heat dissipation micromotor according to claim 3, characterized in that: A dustproof sheet (23) is fixedly connected to the surface of the shaft through tube (10), and the material of the dustproof sheet (23) is high manganese steel.

5. The dust-free heat dissipation micromotor according to claim 1, characterized in that: The abutment mechanism comprises an abutment ring (21), both ends of a side surface of the abutment ring (21) are fixedly connected to limit rods (22), the limit rods (22) are clamped with the sliding support frame (703) via a clamping groove (704), and a ball (24) is embedded and installed on one side of the abutment ring (21).

6. The dust-free heat dissipation micromotor according to claim 1, characterized in that: The axial retaining frame (5) is fixedly mounted on the inner side of the motor housing (1); the vertical cross-section of the positioning groove (6) is an equilateral hexagon and is adapted to the end of the rotating rod (701).

7. The dust-free heat dissipation micromotor according to claim 1, characterized in that: The axial through tube (10) is fixedly connected to the rotating drum (4), and the two built-in fan blades (702) are respectively placed inside the corresponding first heat conducting mechanism (17) and second heat conducting mechanism (18).

8. The dust-free heat dissipation micromotor according to claim 1, characterized in that: The two sliding support frames (703) are slidably connected to the rotating drum (4) via a first guide limit groove (13) and a second guide limit groove (14), respectively.

9. The dust-free heat dissipation micromotor according to claim 1, characterized in that: The centers of the motor housing (1), the rotating drum (4), the rotating rod (701), the guide drum (15), the shaft through tube (10) and the end protection cover (9) are all located on the same axis.

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