A motor rotor core machine with good noise reduction performance

Abstract

The invention discloses a motor rotor core machine with good noise reduction performance, and relates to the technical field of motor rotors. The motor rotor core machine comprises a motor stator and a rotor core, wherein the rotor core is located inside the motor stator; and further comprises: a rotating shaft, which is arranged inside the rotor core, and the two ends of the rotating shaft extend to the outside of the rotor core, a shell is arranged outside the motor stator, and the two ends of the rotating shaft extend out of the outside of the shell respectively, and connecting holes are arranged at the two ends of the shell, a connecting rod is arranged on one side of the rotating shaft, and a fan blade is arranged on the other end of the connecting rod, and the motor rotates the rotating shaft when rotating, thereby driving the connecting rod and the fan blades on both sides to rotate around the outside of the motor stator, and the rotation of the fan blades will generate wind force to discharge the air inside the shell from the exhaust groove, so that the air inside the shell can be discharged, and the noise generated by the contact and friction between the air inside the shell and the rotor core is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of motor rotors, and in particular to a motor rotor core machine with good noise reduction performance. Background Art

[0002] In recent years, with the continuous development of motor technology, solid rotor core has gradually become a new trend. Compared with the traditional laminated rotor core, solid rotor core has higher energy efficiency and smaller volume, so it has been widely used in the field of high-efficiency and miniaturized motors. The processing and manufacturing of solid rotor core requires the use of special machinery and technical means, such as precision casting, powder metallurgy, etc. The motor rotor core is part of the motor magnetic circuit, which is used to embed the rotor winding. It is an important part of the motor rotor and has an important impact on the performance and efficiency of the motor.

[0003] For example, the publication number CN108462294A is entitled an energy-saving motor with noise reduction function, comprising a first housing, a rotating shaft, a rotor and a stator, and also comprising a noise reduction mechanism and a clutch mechanism. The noise reduction mechanism comprises a second housing, a transmission assembly, an air extraction assembly and a check assembly. The air extraction assembly comprises an air extraction cylinder, an air inlet, a piston and a first transmission rod. The main purpose of the disclosure is to solve the problem that during the rotation of the rotor, the rotor rubs against the air, thereby causing the motor to vibrate and thus cause the motor to emit noise. During use of the above device, it is inconvenient to use the rotor to drive the transmission rod and the piston to reciprocate to discharge the air inside the shell, and the efficiency will be reduced. Therefore, we propose a motor rotor core machine with good noise reduction performance to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a motor rotor core machine with good noise reduction performance to solve the problem in the above background technology that the method of using the rotor to drive the transmission rod and the piston to reciprocate to discharge the air inside the shell is inconvenient and the efficiency is reduced.

[0005] To achieve the above object, the present invention provides the following technical solution: a motor rotor core machine with good noise reduction performance, comprising a motor stator and a rotor core, wherein the rotor core is located inside the motor stator; Also includes: A rotating shaft is arranged inside the rotor core, and both ends of the rotating shaft extend to the outside of the rotor core. A shell is arranged outside the motor stator, and both ends of the rotating shaft extend out of the outside of the shell respectively. Connecting holes are arranged at both ends of the shell, and the rotating shaft extends out of the shell through the connecting holes. Exhaust bumps are symmetrically arranged on both sides of the outside of the shell, and the exhaust bumps on both sides are arranged oppositely. An exhaust groove is integrally formed inside the exhaust bump, and the exhaust groove is connected to the front end of the exhaust bump, and the exhaust bump is connected to the inside of the shell. A connecting rod is symmetrically arranged on one side of the outside of the rotating shaft, and the connecting rod is located inside the shell. A fan blade is arranged on the other end of the connecting rod, and the fan blade is arranged on the outside of the motor stator.

[0006] Preferably, a one-way plate is provided at the front end of the exhaust bump, the one-way plate is connected to the exhaust bump via a connector, the connector includes a return spring, and the one-way plate swings at the front end of the exhaust bump via the connector and the return spring.

[0007] Preferably, the rotating shaft is connected to the motor stator via a first bearing, the rotating shaft is connected to the housing via a second bearing, and the second bearing is engaged inside the connecting hole.

[0008] Preferably, a sealing gasket is provided inside the connecting hole, and the sealing gasket is engaged with the outer side of the second bearing.

[0009] Preferably, a third bearing is provided on a side of the motor stator away from the connecting rod, and the other side of the fan blade is fixed on the outer side of the third bearing.

[0010] Preferably, a sound-absorbing sponge is provided inside the exhaust groove, and the sound-absorbing sponge is located between the rear side of the one-way plate and the front end of the exhaust groove.

[0011] Preferably, a circular hole is provided on the other side of the shell, a fixing rod is provided on the other side of the motor stator, and the fixing rod extends out of the shell through the circular hole, a limiting disk is provided on the outside of the fixing rod, and the limiting disk is attached to the inner wall of the shell.

[0012] Preferably, the outer surface of the fixing rod is provided with an external thread, and the external thread is located on the surface of the fixing rod extending out of the outer shell, the other end of the fixing rod is connected to a fixing nut, the inner wall of the fixing nut is provided with a threaded hole, and the fixing nut is threadedly connected to the fixing rod through the threaded hole.

[0013] Preferably, a shock-absorbing pad is provided on a side of the fixing nut close to the shell, and the shock-absorbing pad is fixed to the inner side of the fixing nut by adhesion.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) By setting a shell on the outside of the motor stator, noise and vibration can be reduced, and a connecting rod is set on one side of the rotating shaft, and a fan blade is set on the other end of the connecting rod. When the motor rotates, the rotating shaft rotates, thereby driving the connecting rod and the fan blades on both sides to rotate around the outside of the motor stator. The rotation of the fan blades will generate wind force to discharge the air inside the shell from the exhaust groove, so that the air inside the shell can be discharged, reducing the noise generated by the contact and friction between the air inside the shell and the rotor core, and reducing the medium for sound propagation inside the shell, thereby improving the noise reduction performance of the motor. Compared with the comparative document, the device is provided with two sets of fan blades to further improve the discharge of air, and the movement trajectory of the fan blades is larger than the trajectory of the reciprocating motion of the piston in the comparative document, so the device is more powerful in terms of air discharge, and the two sets of exhaust grooves can also discharge air more efficiently.

[0015] (2) By arranging a silencer sponge inside the exhaust groove, the noise generated when the air is discharged can be reduced, and by arranging a sealing gasket at the connection between the connecting hole and the rotating shaft, the noise generated by the contact between the rotating shaft and the outer shell can be further reduced. At the same time, by arranging a shock-absorbing pad on the contact surface between the fixing nut and the outer shell, the noise generated by vibration can also be reduced. These shock-absorbing structures can further reduce the vibration and noise of the entire motor device, so that the motor maintains good noise reduction performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the rotor core structure of the present invention; Figure 3 It is a side cross-sectional view of the overall structure of the present invention; Figure 4 It is a front cross-sectional view of the overall structure of the present invention; Figure 5 It is an enlarged view of the structure at A of the present invention; In the figure: 1. casing; 2. motor stator; 3. rotor core; 4. rotating shaft; 5. first bearing; 6. second bearing; 7. sealing gasket; 8. fixing rod; 9. fixing nut; 10. shock-absorbing pad; 11. fan blade; 12. connecting rod; 13. exhaust bump; 14. one-way plate; 15. connecting piece; 16. exhaust groove; 17. silencer sponge; 18. third bearing; 19. threaded hole; 20. external thread; 21. limit plate; 22. round hole; 23. connecting hole. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] The present invention provides a motor rotor core machine with good noise reduction performance, the device comprises a motor stator 2 and a rotor core 3, wherein the rotor core 3 is located inside the motor stator 2. The present invention mainly solves the problem that the method of using the rotor to drive the transmission rod and the piston to reciprocate to discharge the air inside the housing is inconvenient and the efficiency is reduced.

[0019] For the device provided by the present invention, please refer to Figure 1-5 , a detailed introduction is given below.

[0020] The rotating shaft 4 is arranged inside the rotor core 3, and the two ends of the rotating shaft 4 extend to the outside of the rotor core 3. The outside of the motor stator 2 is provided with a shell 1, and the two ends of the rotating shaft 4 extend out of the outside of the shell 1 respectively. The two ends of the shell 1 are provided with connecting holes 23, and the rotating shaft 4 extends out of the shell 1 through the connecting holes 23. Exhaust protrusions 13 are symmetrically arranged on both sides of the outside of the shell 1, and the exhaust protrusions 13 on both sides are arranged oppositely. The exhaust protrusions 13 are integrally formed with exhaust grooves 16 inside, and the exhaust grooves 16 are connected to the front end of the exhaust protrusions 13, and the exhaust protrusions 13 are connected to the inside of the shell 1. A silencer sponge 17 is arranged inside the exhaust groove 16, and the silencer sponge 17 is located between the rear side of the one-way plate 14 and the front end of the exhaust groove 16. The silencer sponge 17 can reduce the noise generated when the air is discharged. A connecting rod 12 is symmetrically arranged on the side, and the connecting rod 12 is located inside the shell 1, a fan blade 11 is arranged on the other end of the connecting rod 12, and the fan blade 11 is arranged on the outside of the motor stator 2, a third bearing 18 is arranged on the side of the motor stator 2 away from the connecting rod 12, and the other side of the fan blade 11 is fixed to the outside of the third bearing 18, which can support and assist the rotation of the other side of the fan blade 11, a one-way plate 14 is arranged at the front end of the exhaust protrusion 13, the one-way plate 14 and the exhaust protrusion 13 are connected by a connecting member 15, the connecting member 15 includes a return spring, and the one-way plate 14 swings at the front end of the exhaust protrusion 13 through the connecting member 15 and the return spring, and the one-way plate 14 is arranged at the front end of the exhaust protrusion 13 to form a one-way valve structure, so that air can be discharged smoothly, and the external air will not flow back to the inside of the shell 1.

[0021] To further illustrate, the rotating shaft 4 is connected to the motor stator 2 via a first bearing 5, and the rotating shaft 4 is connected to the housing 1 via a second bearing 6, and the second bearing 6 is engaged in the interior of the connecting hole 23, a sealing gasket 7 is provided in the interior of the connecting hole 23, and the sealing gasket 7 is engaged in the outer side of the second bearing 6, and the provision of two sets of bearings can improve the stability of the rotor core 3 during rotation and thus reduce the generation of vibration, and the sealing gasket 7 can reduce the noise generated between the rotating shaft 4 and the housing 1.

[0022] To further explain, a circular hole 22 is provided on the other side of the shell 1, and a fixing rod 8 is provided on the other side of the motor stator 2, and the fixing rod 8 extends out of the outside of the shell 1 through the circular hole 22, and a limiting disk 21 is provided on the outside of the fixing rod 8, and the limiting disk 21 is fitted on the inner wall of the shell 1, and an external thread 20 is provided on the outer surface of the fixing rod 8, and the external thread 20 is located on the surface of the fixing rod 8 extending out of the outside of the shell 1, and a fixing nut 9 is connected to the other end of the fixing rod 8, and a threaded hole 19 is provided on the inner wall of the fixing nut 9, and the fixing nut 9 is threadedly connected to the fixing rod 8 through the threaded hole 19, and the fixing nut 9 is threadedly connected to the fixing rod 8, and the motor stator 2 is firmly fixed to the inside of the shell 1 with the cooperation of the limiting disk 21 and the fixing nut 9, and a shock-absorbing pad 10 is provided on the side of the fixing nut 9 close to the shell 1, and the shock-absorbing pad 10 is fixed to the inner side of the fixing nut 9 by adhesion, and the shock-absorbing pad 10 can reduce the vibration generated when the fixing nut 9 and the shell 1 are fitted together.

[0023] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A motor rotor core machine with good noise reduction performance, comprising a motor stator (2) and a rotor core (3), wherein the rotor core (3) is located inside the motor stator (2); Features: Also includes: A rotating shaft (4) is arranged inside the rotor core (3), and both ends of the rotating shaft (4) extend toward the outside of the rotor core (3); a housing (1) is arranged outside the motor stator (2), and both ends of the rotating shaft (4) extend out of the outside of the housing (1); both ends of the housing (1) are provided with connecting holes (23), and the rotating shaft (4) extends out of the housing (1) through the connecting holes (23); exhaust bumps (13) are symmetrically arranged on both sides of the outside of the housing (1), and the exhaust bumps on both sides are The exhaust protrusions (13) are arranged opposite to each other, the exhaust grooves (16) are integrally formed inside the exhaust protrusions (13), the exhaust grooves (16) are connected to the front ends of the exhaust protrusions (13), and the exhaust protrusions (13) are connected to the inside of the housing (1), a connecting rod (12) is symmetrically arranged on one side of the outside of the rotating shaft (4), and the connecting rod (12) is located inside the housing (1), and a fan blade (11) is arranged at the other end of the connecting rod (12), and the fan blade (11) is arranged on the outside of the motor stator (2).

2. The motor rotor core machine with good noise reduction performance according to claim 1, characterized in that: A one-way plate (14) is provided at the front end of the exhaust lug (13); the one-way plate (14) and the exhaust lug (13) are connected via a connecting piece (15); a return spring is included inside the connecting piece (15); and the one-way plate (14) swings at the front end of the exhaust lug (13) via the connecting piece (15) and the return spring.

3. The motor rotor core machine with good noise reduction performance according to claim 1, characterized in that: The rotating shaft (4) and the motor stator (2) are connected via a first bearing (5), and the rotating shaft (4) and the housing (1) are connected via a second bearing (6), and the second bearing (6) is engaged inside the connecting hole (23).

4. The motor rotor core machine with good noise reduction performance according to claim 1, characterized in that: A sealing gasket (7) is disposed inside the connection hole (23), and the sealing gasket (7) is engaged with the outside of the second bearing (6).

5. The motor rotor core machine with good noise reduction performance according to claim 1, characterized in that: A third bearing (18) is provided on one side of the motor stator (2) away from the connecting rod (12), and the other side of the fan blade (11) is fixed on the outside of the third bearing (18).

6. The motor rotor core machine with good noise reduction performance according to claim 1, characterized in that: A sound-absorbing sponge (17) is arranged inside the exhaust groove (16), and the sound-absorbing sponge (17) is located between the rear side of the one-way plate (14) and the front end of the exhaust groove (16).

7. The motor rotor core machine with good noise reduction performance according to claim 1, characterized in that: A circular hole (22) is provided on the other side of the housing (1), a fixing rod (8) is provided on the other side of the motor stator (2), and the fixing rod (8) passes through the circular hole (22) and extends out of the housing (1), and a limiting plate (21) is provided outside the fixing rod (8), and the limiting plate (21) is attached to the inner wall of the housing (1).

8. The motor rotor core machine with good noise reduction performance according to claim 7, characterized in that: The outer surface of the fixing rod (8) is provided with an external thread (20), and the external thread (20) is located on the surface of the fixing rod (8) extending outside the housing (1); the other end of the fixing rod (8) is connected to a fixing nut (9); the inner wall of the fixing nut (9) is provided with a threaded hole (19), and the fixing nut (9) is threadedly connected to the fixing rod (8) through the threaded hole (19).

9. The motor rotor core machine with good noise reduction performance according to claim 8, characterized in that: A shock-absorbing pad (10) is provided on a side of the fixing nut (9) close to the housing (1), and the shock-absorbing pad (10) is fixed to the inner side of the fixing nut (9) by adhesion.

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