Dustproof heat dissipation motor

Abstract

The utility model relates to the technical field of motors, in particular to a dustproof heat dissipation motor. The utility model provides a dustproof heat dissipation motor which comprises a motor body providing output power and further comprises an output shaft coaxially arranged in the axial direction of the motor body in a back-to-back mode, a heat dissipation cavity is formed in the tail end of the motor body, and heat dissipation operation is conducted in the cavity in an air cooling mode. The heat dissipation piece can move in a reciprocating mode in the axial direction of the output shaft so as to achieve sealing and dustproof operation; according to the heat dissipation motor, the heat dissipation part is designed, so that heat dissipation operation during operation of the motor can be realized through the heat dissipation part, dustproof operation during stopping of the motor can also be realized through the heat dissipation part, and the problems that in the prior art, the motor mainly depends on fan blades arranged at the tail to perform air exhaust and heat dissipation operation, and dust cannot be prevented when the motor is in a non-working state are solved. And external dust easily enters the motor along the tail part, so that the heat dissipation of the motor is influenced, and a stator and a rotor in the motor are eroded.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a dust-proof heat dissipation motor. Background Art

[0002] In the prior art, a motor refers to an electromagnetic device that realizes electrical energy conversion or transmission based on the law of electromagnetic induction. Since the motor generates heat during operation and the motor is a closed structure, its heat dissipation capacity is poor. Therefore, a coaxially driven fan blade is usually added to the tail to exhaust and dissipate heat. However, when the motor is not working, external dust can easily enter the motor along the tail, which not only affects the heat dissipation of the motor but also causes erosion to the stator and rotor inside it. Therefore, it is particularly important to improve the dustproof performance of the motor while ensuring normal heat dissipation of the motor. Utility Model Content

[0003] The problem to be solved by the present application is that the existing motor mainly relies on the fan blades arranged at the tail to perform exhaust and heat dissipation operations, and when not in working state, external dust can easily enter the interior of the motor along the tail, which not only affects the heat dissipation of the motor but also causes erosion of the stator and rotor inside it.

[0004] In order to solve the above-mentioned technical problems, the present application provides a dustproof and heat-dissipating motor, including a body that provides output power, and also includes an output shaft that is coaxially and back-to-back arranged along the axial direction of the body. A heat dissipation cavity is formed at the end of the body, and the interior of the cavity is arranged with a heat dissipation component that uses air cooling to perform heat dissipation operations, and can reciprocate along the axial direction of the output shaft to achieve sealed and dust-proof operations.

[0005] Since the heat dissipation motor of the present application is designed with a heat sink, the heat sink can be used to achieve heat dissipation operations when the motor is running, and can also be used to achieve dust-proof operations when the motor is stopped. This solves the problem that the motor in the prior art mainly relies on the fan blades arranged at the tail to perform exhaust and heat dissipation operations, while when not working, external dust can easily enter the inside of the motor along the tail, which not only affects the heat dissipation of the motor but also causes erosion of the stator and rotor inside it. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the structure of the body and hood.

[0007] Figure 2 It is a schematic diagram of the structure of the heat sink.

[0008] Figure 3 It is a schematic diagram of the structure of the positive axis and cavity.

[0009] Figure 4 This is a schematic diagram of the structure of the secondary shaft, spring and wind wheel.

[0010] Figure 5 This is a schematic diagram of the structure of the wind wheel.

[0011] Figure 6 It is a schematic diagram of the structure of the cover plate.

[0012] Figure 7 It is a schematic diagram of the structure of the through hole and the cover plate.

[0013] In the figure: 1. machine body; 2. machine cover; 3. through hole; 4. heat sink; 5. main shaft; 6. cavity; 7. secondary shaft; 8. spring; 9. wind wheel; 10. shaft; 11. blades; 12. cover plate. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0015] The present application relates to a dustproof heat dissipation motor, such as Figure 1-7 As shown, the heat dissipation motor includes a body 1 for providing output power, and the output shafts are coaxially and back-to-back arranged inside the body 1 along the axial direction. In order to improve the heat dissipation performance of the body 1, a heat dissipation cavity 6 is formed at the end of the body 1, and a heat dissipation element 4 for heat dissipation operation by air cooling is arranged inside the cavity 6. In order to facilitate the loading, unloading and maintenance of the heat dissipation element 4, a detachably connected cover 2 is provided at the position of the cavity 6, and through holes 3 for air circulation are evenly opened on the upper part of the cover 2, so that when the heat dissipation element 4 is running, the inside of the body 1 can be The heat is blown out along the through hole 3, thereby realizing effective heat dissipation operation of the body 1. In order to meet the heat dissipation requirements while improving the dust-proof performance of the motor, the heat sink 4 can reciprocate along the axial direction of the body 1. When the heat sink 4 is in contact with the hood 2, that is, the motor is in a stopped state, the through hole 3 is blocked by the heat sink 4, so that the air inside the cavity 6 no longer circulates, thereby preventing external dust from entering the cavity 6 along the through hole 3. When the heat sink 4 is not in contact with the hood 2, that is, the motor is in a running state, the through hole 3 maintains an unobstructed ventilation state.

[0016] The output shaft is divided into a main shaft 5 and a secondary shaft 7 according to different output functions. The main shaft 5 is used to connect with an external transmission structure or driving component and drive it to operate, while the secondary shaft 7 is connected to the heat sink 4, thereby driving the heat sink 4 to rotate for cooling and heat dissipation.

[0017] The heat sink 4 includes a wind wheel 9 and a spring 8. The wind wheel 9 and the secondary shaft 7 are coaxially arranged. In order to enable the wind wheel 9 to slide along the axial direction of the secondary shaft 7 while rotating with the secondary shaft 7, a spline connection is adopted between the wind wheel 9 and the secondary shaft 7, so that the wind wheel 9 can achieve a composite movement of rotation and sliding along the surface of the secondary shaft 7. In order to block the through hole 3 by the wind wheel 9 when the motor is stopped, the wind wheel 9 needs to abut against the hood 2 in a stationary state. Therefore, a spring 8 abutting against the wind wheel 9 is sleeved on the upper part of the secondary shaft 7. At this time, the spring 8 is preferably a compression spring with a preload force. With the help of the preload force of the spring 8, the wind wheel 9 is driven to abut against the hood 2. When the motor is running, the secondary shaft 7 drives the wind wheel 9 to rotate. As the wind wheel 9 continuously discharges the heat inside the motor along the through hole 3, the air pressure inside the cavity 6 is made lower than the external atmospheric pressure, which will cause unbalanced force on both sides of the wind wheel 9. When the pressure difference on both sides is greater than the elastic force of the spring 8, the wind wheel 9 will move in the cavity 6 away from the through hole 3 under the action of the atmospheric pressure until a new force balance is reached or the maximum compression of the spring 8 is reached. At this moment, the through hole 3 of the hood 2 remains unobstructed, realizing the heat exchange operation of the motor.

[0018] In order to enable the wind wheel 9 to block the through hole 3, the wind wheel 9 includes a shaft body 10, blades 11 and a cover plate 12. In order to achieve the connection operation with the secondary shaft 7, the shaft body 10 is a hollow shaft body 10 with an internal spline, and the blades 11 for guiding the air are evenly arranged in the axial direction of the shaft body 10. In order to increase the air volume and strength of the wind wheel 9, the blades 11 are arranged in a spiral shape along the axial direction of the shaft body 10, and the spiral angle is 30-40°, preferably 36°. In order to block the through hole 3, a cover plate 12 adapted to the through hole 3 for covering the through hole 3 is arranged at the end of the wind wheel 9.

[0019] During use, when the motor starts to run, due to the high speed of the motor, after its secondary shaft 7 drives the wind wheel 9 to rotate, the wind wheel 9 will instantly discharge the air inside the cavity 6, so that the cover plate 12 only generates a brief dynamic friction with the hood 2, that is, under the action of atmospheric pressure, it moves along the axial direction of the secondary shaft 7 in the direction away from the through hole 3 along with the wind wheel 9. At this moment, the spring 8 on the upper part of the secondary shaft 7 begins to be gradually compressed. Since the wind wheel 9 is in a rotating state, a gasket for transitional contact can be added between the spring 8 and the wind wheel 9 to avoid wear of the spring 8 or follow-up rotation operation, and the gasket can be considered to be further replaced by a ball-type structure to further reduce the wear caused by dynamic friction. At this moment, the through hole 3 begins to remain unobstructed, and the heat generated by the body 1 It will continue to leave the cavity 6 through the through hole 3 driven by the blades 11 of the wind wheel 9, thereby satisfying the heat dissipation operation when the motor is running. When the motor stops, the secondary shaft 7 starts to drive the wind wheel 9 to gradually slow down until it stops rotating. Then the air pressure of the cavity 6 and the outside world begins to gradually restore the balance, and then the force acting on the compressed spring 8 is lost, so that the wind wheel 9 begins to approach the through hole 3 along the axial direction of the secondary shaft 7 under the drive of the spring 8, and completes the abutment with the hood 2, so that the through hole 3 is blocked by the cover plate 12, and the cavity 6 is in a closed state at this moment, avoiding the entry of external dust. Since the body 1 no longer generates new heat at this moment, even if it still has residual heat, the residual heat can be slowly exchanged with the wall of the body 1 and the cavity 6 with the help of the body 1.

[0020] It is to be understood that the present application is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present application. In addition, under the guidance of the present application, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the scope protected by the present application.

Claims

1. A dustproof heat dissipation motor, comprising a body (1) for providing output power, characterized in that: It also includes an output shaft coaxially arranged in a back-to-back direction along the axial direction of the machine body (1); a heat dissipation cavity (6) is formed at the end of the machine body (1); a heat dissipation element (4) is arranged inside the cavity (6) and is operable to dissipate heat by air cooling and is capable of reciprocating along the axial direction of the output shaft to achieve a sealed and dustproof operation.

2. The dustproof heat dissipation motor according to claim 1, characterized in that: A detachably connected machine cover (2) is provided at the position of the cavity (6), and through holes (3) for air circulation are evenly provided on the upper part of the machine cover (2).

3. The dustproof heat dissipation motor according to claim 1, characterized in that: The output shaft is divided into a positive shaft (5) and a secondary shaft (7); the positive shaft (5) is used to connect with an external transmission structure or a driving component and drive it to operate, and the secondary shaft (7) is connected to the heat sink (4) and drives it to rotate.

4. The dustproof heat dissipation motor according to claim 2, characterized in that: The heat sink (4) comprises a wind wheel (9) and a spring (8). The wind wheel (9) and the secondary shaft (7) are coaxially arranged. The upper part of the secondary shaft (7) is sleeved with a spring (8) that abuts against the wind wheel (9) so as to drive the wind wheel (9) to slide and return along the axial direction of the secondary shaft (7).

5. The dustproof heat dissipation motor according to claim 4, characterized in that: A spline connection is adopted between the wind wheel (9) and the secondary shaft (7), which enables the wind wheel (9) to achieve a composite motion of rotation and sliding along the surface of the secondary shaft (7).

6. The dustproof heat dissipation motor according to claim 4, characterized in that: The spring (8) is a compression spring with a preload force.

7. The dustproof heat dissipation motor according to claim 4, characterized in that: The wind wheel (9) comprises a shaft body (10), blades (11) and a cover plate (12); the shaft body (10) and the secondary shaft (7) are connected by a spline; the blades (11) are arranged in a spiral shape along the axial direction of the shaft body (10); and the cover plate (12) adapted to the through hole (3) for achieving a covering operation is arranged at the end of the wind wheel (9).

8. The dustproof heat dissipation motor according to claim 7, characterized in that: The shaft body (10) is a hollow shaft body (10) with internal splines.

9. The dustproof heat dissipation motor according to claim 7, characterized in that: The helical angle of the blade (11) is 30-40°.

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