Motor noise reduction housing with low noise

Abstract

The utility model provides a motor noise reduction housing with low noise, and relates to the technical field of motor housings. The motor comprises a motor housing, the interior of the motor housing is rotatably connected with an output rotating shaft, the exterior of the output rotating shaft is provided with a heat dissipation mechanism, the heat dissipation mechanism comprises a rubber gasket fixedly connected with the output rotating shaft, and the outer surface of the rubber gasket is fixedly connected with a heat dissipation lantern ring. Through the arrangement of the output rotating shaft, the rubber gasket, the heat dissipation lantern ring, the heat dissipation fan blades and the reinforcing rods, the output rotating shaft rotates to drive the heat dissipation lantern ring to rotate, and the heat dissipation lantern ring drives the heat dissipation fan blades to rotate, so that heat in the motor shell is discharged out of the device, and normal operation of the motor is prevented from being influenced by over-high temperature in the motor shell; a rubber gasket and a reinforcing rod can keep the heat dissipation lantern ring stable in the rotating process, the situation that the heat dissipation lantern ring shakes to generate friction with the output rotating shaft is avoided, and noise generated by friction between the heat dissipation lantern ring and the output rotating shaft in the heat dissipation process is reduced.

Description

Technical Field

[0001] The utility model relates to a motor noise reduction shell, in particular to a motor noise reduction shell with low noise, belonging to the technical field of motor shells. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction, or converts one form of electrical energy into another. There are three main sources of noise in a motor: electromagnetic noise caused by the harmonic magnetic field of the air gap, mechanical noise caused by bearing noise and structural resonance noise or rotational vibration noise, and ventilation noise caused by the vibration of the cooling fan blades during rotation and the friction with the shaft.

[0003] According to the patent number CN218472924U, a protective noise reduction motor housing is disclosed, including a shell, a cover body is arranged on one side of the shell, a mounting plate is fixedly connected to one side of the shell and the cover body, a mounting seat is fixedly connected to the bottom of the shell, an exhaust mechanism is arranged on the top of the cover body, a placement groove is opened inside the shell, and a magnetic ring is fixedly connected inside the placement groove.

[0004] During the implementation of the above scheme, the shell can be automatically exhausted when the air pressure inside is high, thereby preventing humid air from the outside from entering the shell and damaging the components. However, during the implementation of the above scheme, it is difficult to eliminate the noise generated by the cooling fan during the rotation process. When the cooling fan is cooling the motor, it is easy to have a small swing due to the high speed, thereby rubbing against the shaft and making noise, which is not only easy to cause damage to both, but also affects the working environment. To this end, we provide a motor noise reduction housing with low noise to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a motor noise reduction housing with low noise in order to solve the above problems, so as to solve the problem in the prior art that the motor heat dissipation fan blades easily rub against the output shaft to generate noise.

[0006] The utility model is implemented through the following technical scheme: a motor noise reduction housing with low noise, comprising a motor housing, the interior of the motor housing is rotatably connected to an output shaft, a heat dissipation mechanism is arranged on the outside of the output shaft, the heat dissipation mechanism comprises a rubber gasket fixedly connected to the output shaft, a heat dissipation ring is fixedly connected to the outer surface of the rubber gasket, a group of heat dissipation blades in a circular array are fixedly connected to the outer surface of the heat dissipation ring, a group of reinforcement rods in a circular array are fixedly connected to the outer surface of the output shaft, each of the reinforcement rods passes through the heat dissipation ring and is fixedly connected to the heat dissipation ring.

[0007] Preferably, the two ends of the motor housing are respectively fixedly connected with a rear end cover and a front end cover, and the inner walls of the motor housing, the rear end cover and the front end cover are fixedly installed with noise reduction pads, which can absorb the noise generated during the operation of the motor.

[0008] Preferably, a stator core is fixedly installed inside the motor housing, a rotor core is installed inside the stator core, the rotor core is rotatably connected to the output shaft, and the rotor core can realize the conversion between electrical energy and kinetic energy.

[0009] Preferably, a heat sink is fixedly connected to the inner wall of the motor housing, a first bearing is rotatably connected to the outer surface of the output shaft, the first bearing is rotatably connected to the heat sink, and the heat sink facilitates the circulation of heat inside the motor housing.

[0010] Preferably, a ventilation filter plate is fixedly connected to the outer surface of the rear end cover, and a connecting plate is fixedly connected to the inner wall of the front end cover, and the ventilation filter plate can block and filter dust.

[0011] Preferably, a second bearing is rotatably connected to the outer surface of the output shaft, and the second bearing is rotatably connected to the connecting plate, so that the second bearing can support the rotation of the output shaft.

[0012] Preferably, two fixing plates are fixedly connected to the outer surface of the motor housing, and a three-phase power connection box is fixedly installed on the outer surface of the motor housing, and the fixing plates facilitate installation and fixation of the device.

[0013] The utility model provides a motor noise reduction housing with low noise, which has the following beneficial effects:

[0014] The utility model arranges an output shaft, a rubber gasket, a heat dissipation ring, heat dissipation fan blades and a reinforcement rod. The output shaft rotates to drive the heat dissipation ring to rotate, and the heat dissipation ring drives the heat dissipation fan blades to rotate, thereby generating a wind flow inside the rear end cover, so that the heat inside the motor housing is discharged to the outside of the device through the heat dissipation holes on the heat dissipation plate, avoiding the internal temperature of the motor housing being too high to affect the normal operation of the motor. The rubber gasket and the reinforcement rod can keep the heat dissipation ring stable during rotation, avoiding the heat dissipation ring from shaking and generating friction with the output shaft, reducing the noise generated by the friction between the heat dissipation ring and the output shaft during the heat dissipation process, extending the service life of the device, and avoiding the noise from affecting the staff or other working equipment.

[0015] The utility model can provide ventilation effect for the heat dissipation of the device through the provision of a ventilation filter plate, and can also block fine particulate matter such as dust carried in the air, thereby preventing dust and other substances from entering the device and affecting the normal operation of other components inside the device. Through the provision of a noise reduction pad, the noise generated inside the motor can be blocked and absorbed, thereby reducing the noise generated during the operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of the motor housing of the utility model;

[0018] Figure 3 It is an expanded view of the overall structure of the utility model;

[0019] Figure 4 For this utility model Figure 3 A-section structure enlarged view.

[0020]

Main component symbol description

[0021] 1. Motor housing; 2. Rear cover; 3. Front cover; 4. Stator core; 5. Rotor core; 6. Output shaft; 7. Heat sink; 8. First bearing;

[0022] 9. heat dissipation mechanism; 901. rubber gasket; 902. heat dissipation collar; 903. heat dissipation fan blades; 904. reinforcement rod;

[0023] 10. Ventilation filter plate; 11. Connecting plate; 12. Second bearing; 13. Noise reduction pad; 14. Fixing plate; 15. Three-phase power connection box. DETAILED DESCRIPTION

[0024] The embodiment of the utility model provides a motor noise reduction housing with low noise.

[0025] See also Figure 1 , Figure 2 and Figure 3 , including a motor housing 1, the two ends of the motor housing 1 are respectively fixedly connected with a rear end cover 2 and a front end cover 3. Some components in the motor do not involve the scope of rights of this application, so they are not drawn in detail in the drawings and are not described in detail in this application. The styles of components in the drawings of this application are for reference only, and the specific details are mainly based on actual production.

[0026] See also Figure 2 and Figure 3The stator core 4 is fixedly installed inside the motor housing 1. The stator core 4 is an important component that constitutes the motor magnetic flux circuit and fixes the stator coil. It is compressed into a whole by punching sheets and various fasteners. It has good magnetic conductivity and low loss; good rigidity and good vibration; and has the advantage of good ventilation in the structural layout.

[0027] The stator core 4 is internally installed with a rotor core 5, which includes an iron core and a winding. The armature winding is installed on the rotor core. When powered on, it generates an induced electromotive force, acts as a rotating magnetic field, and then generates an electromagnetic torque to convert electrical energy into mechanical energy.

[0028] The motor housing 1 is internally rotatably connected to an output shaft 6, to which the rotor core 5 is rotatably connected. The output shaft 6 is the output end of the mechanical energy converted by the motor. The rotor core 5 can convert electrical energy into mechanical energy to drive the output shaft 6 to rotate. The specific conversion method is a prior art and will not be described in detail in this application.

[0029] A heat sink 7 is fixedly connected to the inner wall of the motor housing 1, and a first bearing 8 is rotatably connected to the outer surface of the output shaft 6. The first bearing 8 is rotatably connected to the heat sink 7. The first bearing 8 and the second bearing 12 are both prior art and will not be described in detail in this application. The first bearing 8 can support the rotation of the output shaft 6, and has the characteristics of small sliding resistance, low power consumption, easy starting, etc. Heat dissipation holes are provided on the heat sink 7.

[0030] The inner wall of the front end cover 3 is fixedly connected to a connecting plate 11, and the outer surface of the output shaft 6 is rotatably connected to a second bearing 12. The second bearing 12 is rotatably connected to the connecting plate 11. The second bearing 12 also provides support for the rotation of the output shaft 6, so that the output shaft 6 can remain stable when outputting kinetic energy, thereby preventing the output shaft 6 from shaking during rotation and affecting the normal use of external devices.

[0031] The outer surface of the rear end cover 2 is fixedly connected with a ventilation filter plate 10, which can provide ventilation effect for the heat dissipation of the device, and at the same time can block fine particulate matter such as dust carried in the air, preventing dust and other substances from entering the device and affecting the normal operation of other components inside the device.

[0032] See also Figure 3 The inner walls of the motor housing 1, the rear cover 2 and the front cover 3 are all fixedly installed with noise reduction pads 13. The noise reduction pads 13 are prior art and will not be described in detail in this application. The noise reduction pads 13 can block and absorb the noise generated inside the motor, reduce the noise generated during the operation of the motor, and avoid the noise from affecting the staff or other work equipment.

[0033] See also Figure 1Two fixing plates 14 are fixedly connected to the outer surface of the motor housing 1. Screw holes are provided on the two fixing plates 14. The staff can install the motor to a suitable position through the screw holes. The fixing plates 14 can provide support and protection for the normal operation of the motor.

[0034] A three-phase power connection box 15 is fixedly installed on the outer surface of the motor housing 1. The three-phase power connection box 15 is a prior art and will not be described in detail in this application. The setting of the three-phase power connection box 15 facilitates the connection of the motor with the external power line. At the same time, the three-phase power connection box 15 will also protect the power connector to avoid leakage that threatens the safety of the staff.

[0035] See also Figure 3 and Figure 4 A heat dissipation mechanism 9 is arranged on the outside of the output shaft 6, and the heat dissipation mechanism 9 includes a rubber gasket 901 fixedly connected to the output shaft 6. The rubber gasket 901 can make the connection between the heat dissipation ring 902 and the output shaft 6 tighter, and buffer the vibration generated by the operation of the heat dissipation fan blades 903, thereby avoiding friction between the heat dissipation ring 902 and the output shaft 6 and reducing the noise generated by the vibration.

[0036] A heat dissipation ring 902 is fixedly connected to the outer surface of the rubber gasket 901, and a group of heat dissipation blades 903 in a circular array are fixedly connected to the outer surface of the heat dissipation ring 902. The rotation of the output shaft 6 drives the heat dissipation ring 902 to rotate, and the rotation of the heat dissipation ring 902 drives the heat dissipation blades 903 to rotate. The rotation of the heat dissipation blades 903 will generate a flow of air inside the rear end cover 2, thereby discharging the heat inside the motor housing 1 to the outside of the device through the heat dissipation holes on the heat dissipation plate 7, so as to prevent the internal temperature of the motor housing 1 from being too high and affecting the normal operation of the motor.

[0037] A group of reinforcing rods 904 in a circular array are fixedly connected to the outer surface of the output shaft 6, and each reinforcing rod 904 passes through the heat dissipation ring 902 and is fixedly connected to the heat dissipation ring 902. Through the arrangement of the reinforcing rods 904, the heat dissipation ring 902 can remain stable with the output shaft 6 during rotation, thereby preventing the heat dissipation ring 902 from shaking during rotation and rubbing against the output shaft 6, reducing the noise generated by the friction, and extending the service life of the heat dissipation ring 902 and the output shaft 6.

[0038] When the utility model is in use: the staff first correctly connects the power cord to the three-phase power connection box 15, and then starts the power supply. Through the action of the stator core 4 and the rotor core 5, the output shaft 6 starts to rotate, and the rotation of the output shaft 6 drives the heat dissipation ring 902 to rotate, and the heat dissipation ring 902 drives the heat dissipation fan blades 903 to rotate, thereby generating a flow of wind inside the rear end cover 2, thereby discharging the heat inside the motor housing 1 to the outside of the device through the heat dissipation holes on the heat dissipation plate 7, avoiding the excessively high temperature inside the motor housing 1 affecting the normal operation of the motor, and the rubber gasket 901 and the reinforcement rod 904 can keep the heat dissipation ring 902 stable during the rotation process, avoiding the heat dissipation ring 902 from shaking and generating friction with the output shaft 6, reducing the noise generated by the friction between the heat dissipation ring 902 and the output shaft 6 during the heat dissipation process, and avoiding the noise from affecting the staff or other working equipment.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A motor noise reduction housing with low noise, comprising a motor housing (1), characterized in that: The motor housing (1) is rotatably connected to an output shaft (6) inside, and a heat dissipation mechanism (9) is arranged outside the output shaft (6). The heat dissipation mechanism (9) comprises a rubber gasket (901) fixedly connected to the output shaft (6), and a heat dissipation ring (902) is fixedly connected to the outer surface of the rubber gasket (901), and a group of heat dissipation blades (903) in a circular array are fixedly connected to the outer surface of the heat dissipation ring (902), and a group of reinforcement rods (904) in a circular array are fixedly connected to the outer surface of the output shaft (6), and each reinforcement rod (904) passes through the heat dissipation ring (902) and is fixedly connected to the heat dissipation ring (902).

2. The motor noise reduction housing with low noise according to claim 1, characterized in that: The two ends of the motor housing (1) are respectively fixedly connected with a rear end cover (2) and a front end cover (3), and the inner walls of the motor housing (1), the rear end cover (2) and the front end cover (3) are all fixedly mounted with noise reduction pads (13).

3. The motor noise reduction housing with low noise according to claim 1, characterized in that: A stator core (4) is fixedly installed inside the motor housing (1), a rotor core (5) is installed inside the stator core (4), and the rotor core (5) is rotatably connected to an output shaft (6).

4. The motor noise reduction housing with low noise according to claim 1, characterized in that: A heat sink (7) is fixedly connected to the inner wall of the motor housing (1), a first bearing (8) is rotatably connected to the outer surface of the output shaft (6), and the first bearing (8) is rotatably connected to the heat sink (7).

5. The motor noise reduction housing with low noise according to claim 2, characterized in that: The outer surface of the rear end cover (2) is fixedly connected to a ventilation filter plate (10), and the inner wall of the front end cover (3) is fixedly connected to a connecting plate (11).

6. The motor noise reduction housing with low noise according to claim 5, characterized in that: The outer surface of the output shaft (6) is rotatably connected to a second bearing (12), and the second bearing (12) is rotatably connected to the connecting plate (11).

7. The motor noise reduction housing with low noise according to claim 1, characterized in that: Two fixing plates (14) are fixedly connected to the outer surface of the motor housing (1), and a three-phase power connection box (15) is fixedly installed on the outer surface of the motor housing (1).

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