WO2016008122A1

WO2016008122A1 - Motor rotary shaft and motor, and mounting structure of motor and rotary component

Info

Publication number: WO2016008122A1
Application number: PCT/CN2014/082338
Authority: WO
Inventors: 秦邦耀; 史克富; 吴延兵
Original assignee: 广东威灵电机制造有限公司
Priority date: 2014-07-16
Filing date: 2014-07-16
Publication date: 2016-01-21

Abstract

Disclosed are a motor rotary shaft, a motor having the motor rotary shaft, and a mounting structure of the motor and a rotary component. The motor rotary shaft comprises a first mounting shaft body (11) for the mounting of a rotor, a second mounting shaft body (12) for the mounting of the rotary component, and a damping assembly (13) mounted on the second mounting shaft body (12), wherein the damping assembly (13) comprises a first elastic element (131). The first elastic element (131) is provided in the center with a first shaft hole which penetrates therethrough and fits with the second mounting shaft body (12), and the first elastic element (131) is sheathed on the second mounting shaft body (12) with the first shaft hole. In one aspect, the motor rotary shaft can weaken the vibration energy transmitted to the rotary component, thereby reducing the vibration and noise in the operating process of the motor and the rotary component; in another aspect, a large amount of heat generated on the rotor can be prevented from being directly transmitted to the damping assembly, thereby guaranteeing the service life of the damping assembly; and in yet another aspect, the security and reliability of the operation of the motor can be increased.

Description

Motor shaft and motor, motor and rotating parts mounting structure

Technical field

The invention belongs to the technical field of motors, and in particular relates to a motor shaft and a motor having the motor shaft, and a mounting structure of the motor and the rotating component having the motor.

Background technique

The motor generally comprises a stator, a rotor, a casing and a rotating shaft. The stator and the rotor are both disposed in the outer casing, and the stator is fastened to the outer casing. One end of the rotating shaft extends into the outer casing and is fastened to the rotor, and the other end extends outside the outer casing and is connected with the impeller. The rotating member is fastened so that the rotating shaft can effectively drive the rotating member to rotate while the motor is running. During the specific installation, the motor is generally fastened to the installation equipment through the outer casing (such as the body of the air conditioner, the body of the range hood, the body of the washing machine heater, etc.). During the operation of the motor, both the stator and the rotor generate harmonic components, so that both the stator and the rotor carry a certain amount of vibration energy. If the corresponding vibration reduction measures are not taken, the vibration energy carried on the stator will pass through the motor. The outer shell is transmitted to the body of the equipment, and the vibration energy carried on the rotor can be transmitted to the rotating parts by the national rotating shaft, which will generate large noise and vibration, and thus can not meet the requirements of low noise environment in some applications. .

In the conventional technology, in order to reduce the running noise of the motor, it is generally adopted to provide a rubber damping structure between the motor casing and the device body, which can effectively reduce the vibration energy transmitted by the stator to the device body, thereby To a certain degree of vibration and noise reduction; but because it does not use corresponding measures to reduce the transmission of vibration energy on the rotor, the vibration and noise generated by the motor in the process of driving the rotating parts are still relatively large. It is difficult to meet the design requirements for low noise environments in some occasions.

In the prior art, in order to reduce the transmission of vibration energy on the rotor, a scheme of providing a damping ring between the rotor and the rotating shaft is proposed, so that the damping effect of the damping ring can weaken the rotor to a certain extent. The effect of vibration energy transmission can play a certain role in vibration and noise reduction. However, this solution still has the following shortcomings in specific applications: 1) Since the rotor is one of the main heat-generating components of the motor, it generates a large amount of heat during operation. Therefore, the damper ring is installed between the rotor and the rotating shaft, so that a large amount of heat generated on the rotor is directly transmitted to the damper ring, thereby easily causing rapid damage of the damper ring, thereby affecting the mounting position accuracy of the rotor and affecting The matching clearance between the rotor and the stator ultimately affects the safety and reliability of the motor operation, which brings certain safety hazards to the application of the motor. 2) It is used to lock the damping ring between the rotor and the shaft. The processing technology of the limiting parts is relatively complicated, which leads to the relatively high installation cost of the damping ring, which in turn makes the cost of the motor relatively high, which is ultimately not conducive to the large-scale popularization and application of the solution.

technical problem

The object of the present invention is to overcome the deficiencies of the prior art described above, and to provide a motor rotating shaft and a motor having the motor shaft, a mounting structure of the motor and the rotating component of the motor, which aims to solve the problem of how to ensure the safety and reliability of the motor operation. The technical problem of reducing the vibration energy of the rotor transmission to the rotating component is reduced.

Technical solution

In order to achieve the above object, the technical solution adopted by the present invention is: a motor rotating shaft, comprising a first mounting shaft body for rotor mounting, a second mounting shaft body for rotating component mounting, and a reduction mounted on the second mounting shaft body a vibration assembly comprising a first elastic member, the first elastic member being provided with a first shaft hole disposed in cooperation with the second mounting shaft body along a central position thereof, the first elastic member passing The first shaft hole is sleeved on the second mounting shaft body.

Further, the motor shaft further includes a rigid pressure plate mounted on the second mounting shaft body, and the vibration damping assembly further includes a second elastic member having an outer dimension larger than an outer dimension of the first elastic member. a through hole is formed through the rigid pressure plate, and the second elastic member is provided with a receiving groove disposed in cooperation with the outer surface of the rigid pressure plate and a second shaft hole disposed along the concave bottom portion of the receiving groove The second elastic member is sleeved on the second mounting shaft body through the second shaft hole with the receiving groove facing away from the first elastic member, and the rigid pressure plate passes through the The hole is sleeved on the second mounting shaft body and received in the receiving groove, and the first elastic member is located between the first mounting shaft portion and the second elastic member.

Preferably, the radial dimension of the first mounting shaft body is larger than the radial dimension of the second mounting shaft body, and the joint between the first mounting shaft body and the second mounting shaft body forms a stepped surface. An end of the first elastic member facing the first mounting shaft body abuts against the stepped surface.

Further, the first elastic member is a member made of silicone rubber or polyurethane, and includes a hollow tube portion interposed between an inner wall of the mounting hole of the rotating member and an outer wall of the second mounting shaft, and An annular flange portion that is external to the mounting hole of the rotating member and that is interposed between the rotating member and the stepped surface, the annular flange portion is protruded from the hollow tube portion At one end, the first shaft hole is disposed through the hollow tube portion and the annular flange portion.

Preferably, the outer contour of the rigid pressure plate, the inner contour of the accommodating groove and the outer shape of the second elastic member are both rectangular.

Specifically, the second mounting shaft body includes a first shaft portion disposed in cooperation with the first shaft hole and the second shaft hole, and an outer diameter smaller than an outer diameter of the first shaft portion and the through hole a second shaft portion is disposed, and the first shaft portion is located between the first mounting shaft body and the second shaft portion, and the first elastic member and the second elastic member are sleeved on The rigid pressure plate is sleeved on the second shaft portion on the first shaft portion.

Preferably, the through hole is formed by a smooth circular arc surface and a flat surface joint, the smooth circular arc surface is a circular arc surface having an arc greater than a semicircular arc, and the shape of the second shaft portion and the shape of the through hole Match settings.

Further, the motor shaft further includes a locking member for restricting axial displacement displacement of the vibration damping assembly on the second mounting shaft, the locking member being fastened to the second shaft portion The end portion of the first shaft portion is opposite to the rigid pressure plate.

Further, the present invention also provides a motor including a stator, a rotor mated with the stator, a motor housing disposed outside the stator and the rotor, and the motor shaft described above, the rotor being mounted to the motor shaft The first mounting shaft is on the body.

Further, the present invention also provides a mounting structure of a motor and a rotating component, comprising a rotating component and the above-described motor, the rotating component being sleeved on the damping component.

Beneficial effect

The motor shaft provided by the present invention and the motor having the motor shaft, the motor and the rotating component mounting structure of the motor, the vibration damping component is added to the second mounting shaft body, and the vibration damping component is sleeved in the second installation. The first elastic member on the shaft body, so that the inherent elastic property of the first elastic member can effectively buffer the vibration energy transmitted from the motor shaft to the rotating member, thereby greatly reducing the transmission from the motor shaft to the rotating member. The vibration energy on the upper side effectively reduces the vibration and noise generated during the operation of the motor and rotating parts. The invention installs the vibration damping component for vibration damping and noise reduction on the second mounting shaft body, so that the vibration damping component can be disposed away from the rotor on the one hand, so that a large amount of heat generated on the rotor can be prevented from being directly transmitted to the vibration damping component. In addition, the phenomenon that the first elastic member is quickly damaged is avoided, and the service life of the vibration damping assembly is ensured; on the other hand, since the vibration damping assembly is installed outside the motor casing, it is beneficial to the heat dissipation thereof, thereby facilitating the reduction. The service life of the vibration component; on the other hand, there is no direct connection between the vibration damping component and the rotor, so even if the first elastic component is damaged, the installation position accuracy of the rotor will not be affected, and the rotor and the stator will not be affected. The matching gap between them ensures the safety and reliability of the motor operation.

DRAWINGS

1 is a schematic view showing a mounting structure of a motor and a rotating component according to an embodiment of the present invention;

2 is a schematic structural view of a motor shaft according to an embodiment of the present invention;

3 is a schematic structural view of a first elastic member according to an embodiment of the present invention;

4 is a schematic structural view of a second elastic member according to an embodiment of the present invention;

Figure 5 is a left side cross-sectional view of Figure 4;

6 is a schematic structural view of a rigid pressure plate according to an embodiment of the present invention;

Figure 7 is a left side cross-sectional view of Figure 6;

FIG. 8 is a schematic structural view of a rotating component according to an embodiment of the present invention.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the motor shaft 1 according to the embodiment of the present invention includes a first mounting shaft 11 for rotor mounting, a second mounting shaft 12 for mounting the rotating member 2 , and a second mounting shaft. The damper assembly 13 is mounted on the shaft body 12. The damper assembly 13 includes a first elastic member 131. The first elastic member 131 is disposed at a central position thereof along the first shaft hole 1311 disposed in cooperation with the second mounting shaft 12. The first elastic member 131 is sleeved on the second mounting shaft 12 through the first shaft hole 1311. The arrangement of the first shaft hole 1311 on the first elastic member 131 is mainly used to realize the mounting of the first elastic member 131 on the second mounting shaft 12. During the rotation of the motor shaft 1 to drive the rotating member 2, the inherent elastic property of the first elastic member 131 can effectively buffer the vibration energy transmitted from the motor shaft 1 to the rotating member 2, thereby greatly reducing the rotation of the motor shaft 1 The vibration energy transmitted to the rotating member 2 is thereby effectively reduced the vibration and noise generated during the operation of the motor and the rotating member 2. Meanwhile, in the embodiment of the present invention, the vibration damping assembly 13 for vibration damping and noise reduction is mounted on the second mounting shaft body 12, On the one hand, the vibration damping assembly 13 can be disposed away from the rotor, so that a large amount of heat generated on the rotor can be prevented from being directly transmitted to the vibration damping assembly 13, thereby avoiding the phenomenon that the first elastic member 131 is quickly damaged, and the vibration damping assembly 13 is ensured. On the other hand, since the vibration damping assembly 13 is installed outside the motor casing, it facilitates the dissipation of heat thereon, thereby facilitating the service life of the vibration damping assembly 13; on the other hand, the vibration damping assembly 13 and the rotor There is no direct connection relationship between each other. Therefore, even if the vibration-damping component 13 is damaged, the installation position accuracy of the rotor will not be affected, and the matching clearance between the rotor and the stator will not be affected, thereby effectively ensuring the safety and reliability of the motor operation. .

Further, as shown in FIG. 1 , FIG. 2 , FIG. 5 , FIG. 7 and FIG. 7 , the motor shaft 1 provided by the embodiment of the present invention further includes a rigid pressure plate 14 mounted on the second mounting shaft body 12 , and the vibration damping assembly 13 further The second elastic member 132 is disposed between the rigid pressure plate 14 and the mounting groove 22 of the rotating member 2, and the rigid pressure plate 14 is provided with a through hole 141 along the center thereof. The second elastic member 132 is provided with a receiving groove 1321 which is disposed in cooperation with the outer surface of the rigid pressing plate 14 and a second shaft hole 1322 which is disposed along the concave bottom portion of the receiving groove 1321. The second elastic member 132 passes through the second axial hole. The ferrule 1321 is sleeved on the second mounting shaft 12 with the accommodating groove 1321 facing away from the first elastic member 131. The rigid pressure plate 14 is sleeved on the second mounting shaft 12 through the through hole 141 and received in the accommodating groove 1321. The first elastic member 131 is located between the first mounting shaft portion and the second elastic member 132. The arrangement of the rigid pressure plate 14 can drive the rotating member 2 to rotate along with the motor shaft 1 on the one hand, and prevent the first elastic member 131 and the second elastic member 132 from being infinitely compressed by the rotating member 2 on the other hand to cause the first elastic member 131 to be infinitely compressed. The phenomenon that the second elastic member 132 is detonated occurs, thereby facilitating the service life of the vibration damping assembly 13. The arrangement of the second elastic member 132 is mainly for effectively isolating the direct contact between the rotating member 2 and the rigid pressure plate 14, so that the vibration energy carried on the motor shaft 1 can be effectively prevented from being transmitted to the rotating member 2 through the rigid pressure plate 14. The rigid pressure plate 14 can be made of a material having a relatively good rigidity and strength, such as a metal material such as Q235A carbon structural steel. The second elastic member 132 can be made of a material with better elasticity and better heat resistance, such as silicone rubber, polyurethane (polyurethane), etc., so as to ensure the vibration absorption and noise reduction effect of the second elastic member 132 and The service life of the second elastic member 132.

Preferably, as shown in FIGS. 1 and 2, the radial dimension of the first mounting axle body 11 is greater than the radial dimension of the second mounting axle body 12, and the junction of the first mounting axle body 11 and the second mounting axle body 12 Forming the stepped surface 101, the end of the first elastic member 131 facing the first mounting shaft 11 abuts against the stepped surface 101, that is, the two ends of the first elastic member 131 abut against the stepped surface 101 and the second elastic member, respectively. 132. In this way, the stepped surface 101 can be used to limit the axial displacement displacement of the first elastic member 131 toward the first mounting shaft 11 , which has high reliability and facilitates the installation cost of the vibration damping assembly 13 . Of course, in the specific application, the first elastic member 131 can be restricted toward the first mounting shaft by adding a limiting member (such as a circlip, a bushing, etc.) to the second mounting shaft 12 or the first mounting shaft 11. The axial movement of the body 11 is displaced, but this increases the installation cost of the vibration damping assembly 13.

Specifically, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the first elastic member 131 is a member made of silicone rubber or polyurethane, and the first elastic member 131 includes an inner wall of the mounting hole 21 and the first surface of the rotating member 2 . The hollow tube portion 1312 between the outer wall of the mounting shaft 12 and the annular flange portion 1313 which is externally mounted on the mounting hole 21 of the rotating member 2 and interposed between the rotating member 2 and the stepped surface 101, the annular flange The portion 1313 is protruded from one end of the hollow tube portion 1312, and the first shaft hole 1311 is provided through the hollow tube portion 1312 and the annular flange portion 1313. The first elastic member 131 can be made of a material with better elasticity and better heat resistance, such as silicone rubber, polyurethane (polyurethane), etc., so as to ensure the vibration absorption and noise reduction effect of the first elastic member 131 and The service life of the first elastic member 131. The hollow tube portion 1312 is mainly used for isolating the direct contact between the inner wall of the mounting hole 21 of the rotating member 2 and the outer wall of the second mounting shaft body 12, thereby effectively preventing the vibration energy carried on the motor shaft 1 from being directly transmitted to the rotating member 2. . The annular flange portion 1313 is mainly used to isolate the direct contact of the rotary member 2 with the stepped surface 101, so that the vibration energy carried on the motor shaft 1 can be effectively prevented from being transmitted to the rotary member 2 through the stepped surface 101. Thus, by the cooperation of the hollow tube portion 1312 and the annular flange portion 1313, the purpose of completely isolating the direct contact between the rotating member 2 and the motor shaft 1 can be achieved, which is advantageous for reducing the vibration generated during the operation of the motor and the rotating member 2. noise.

Preferably, as shown in FIG. 1 , FIG. 4 and FIG. 6 , the outer contour of the rigid pressure plate 14 , the inner contour of the accommodating groove 1321 and the outer shape of the second elastic member 132 are both rectangular, so that the rectangular structure is utilized. The edge prevents relative rotational movement between the rigid pressure plate 14 and the rotating member 2, thereby facilitating the motor shaft 1 to pass through the rigid pressure plate 14 drives the reliability of the rotation of the rotating member 2.

Specifically, as shown in FIG. 1 and FIG. 2, the second mounting shaft 12 includes a first shaft hole 1311 and a second shaft hole. The first shaft portion 121 and the second shaft portion 122 having an outer diameter smaller than the outer diameter of the first shaft portion 121 and cooperating with the through hole 141 are disposed, and the first shaft portion 121 is located at the first mounting shaft body 11 and the second portion Between the shaft portions 122, the first elastic member 131 and the second elastic member 132 are sleeved on the first shaft portion 121, and the rigid pressure plate 14 is sleeved on the second shaft portion 122. In this embodiment, the second mounting shaft 12 is set as a stepped shaft, and under the premise that the second mounting shaft 12 has sufficient strength to support the rotating member 2, the weight of the second mounting shaft 12 can be reduced, which is advantageous for improving the motor. The rotation performance of the rotary shaft 1 can be simultaneously adjusted by the first shaft portion 121 to restrict the axial displacement of the rigid pressure plate 14 toward the first mounting shaft 11.

Preferably, as shown in FIG. 2, FIG. 6 and FIG. 7, the through hole 141 is formed by a smooth circular arc surface 1411 and a flat surface 1412. The smooth circular arc surface 1411 is a circular arc surface having a curvature greater than a semi-circular arc degree, and the second axis The shape of the portion 122 is matched with the shape of the through hole 141. In this embodiment, the cross-sections of the through hole 141 and the second shaft portion 122 are not completely circular, but are larger than a semicircular pattern. Thus, the rigid platen 14 is not attached to the second shaft portion 122 and is not rotatable about the second shaft portion 122. The rotary motion is performed to facilitate the relative rotational movement between the rigid pressure plate 14 and the second shaft portion 122, thereby ensuring the reliability of the motor shaft 1 driving the rigid pressure plate 14 to rotate, thereby facilitating the motor shaft 1 to drive the rotating member through the rigid pressure plate 14. 2 rotation reliability. Of course, in a specific application, the broken sections of the through hole 141 and the second shaft portion 122 may also be set to be completely circular, and in order to prevent relative rotational movement between the rigid pressure plate 14 and the second shaft portion 122, an improvement may be adopted. A measure of the tightness between the through hole 141 and the second shaft portion 122.

Further, as shown in FIG. 1 and FIG. 2, the motor shaft 1 of the present embodiment further includes a locking member 15 for restricting axial displacement displacement of the vibration damping assembly 13 on the second mounting shaft body 12, the locking member 15 is fastened to the end of the second shaft portion 122 facing away from the first shaft portion 121 and abuts against the rigid pressure plate 14. In this embodiment, the locking member 15 can effectively limit the axial displacement displacement of the vibration damping assembly 13 and the rotating component 2 after being mounted on the motor shaft 1 in the direction of the first mounting shaft 11 , and the step surface 101 can be limited. The vibration assembly 13 and the rotating member 2 are mounted on the motor shaft 1 and then displaced in the axial direction of the first mounting shaft 11 . Therefore, the vibration limiting effect can be effectively ensured by the common limiting action of the locking member 15 and the step surface 101. The stability of the assembly 13 and the rotating member 2 mounted on the motor shaft 1 is stable.

Preferably, as shown in FIG. 1 and FIG. 2, the locking member 15 is a nut, and the second shaft portion 122 is provided with an external thread that cooperates with a nut. The nut is screwed to the second shaft portion 122 and abuts against the rigid pressure plate. 14 on. Since the threaded connection has a self-locking action, the locking member 15 is set as a nut in this embodiment, which is advantageous for ensuring the vibration-damping component. 13 and the stable reliability of the rotating component 2 mounted on the motor shaft 1; at the same time, since the nut can be disassembled and assembled by a special tool such as a wrench, the disassembly and assembly process is simple. In the specific application, the nut can be made of standard parts, which will help simplify the design process and facilitate future repair and replacement. Of course, the locking member 15 can also be set as other components, such as a pin, a screw, etc., so that the second mounting shaft 12 is correspondingly provided with a pin hole for inserting a pin or a threaded hole for screwing.

Further, an embodiment of the present invention further provides a motor including a stator (not shown), a rotor mated with the stator (not shown), a motor housing (not shown) disposed outside the stator and the rotor, and the motor described above. The rotating shaft 1, the stator is fastened to the motor casing, the first mounting shaft 11 extends in the motor casing, the second mounting shaft 12 extends outside the motor casing, and the rotor is mounted on the first mounting shaft 11 of the motor shaft 1. The motor provided by the embodiment of the invention can reduce the vibration and noise generated when the motor is used to drive the rotating component 2 by using the motor shaft 1 described above, so that the motor is measured during no-load and load operation. The noise value of the A-weighted sound power level is greatly reduced, so that the motor can be applied to some applications that require high-noise working environment, such as in some low-noise working environment. In order to improve the market competitiveness of the motor.

Further, as shown in FIG. 1 , an embodiment of the present invention further provides a mounting structure of a motor and a rotating component, including a rotating component 2 and the above-mentioned motor. The rotating component 2 is provided with a mounting hole 21 along a central axial direction thereof, and is rotated. The component 2 is sleeved on the vibration damping assembly 13 , and the hollow tube portion 1312 is received in the mounting hole 21 and sandwiched between the inner wall of the mounting hole 21 and the outer wall of the second mounting shaft body 12 . The mounting structure of the motor and the rotating component provided by the embodiment of the present invention can effectively buffer the vibration energy transmitted from the motor shaft 1 to the rotating component 2 by using the above-mentioned motor, thereby greatly reducing the rotation of the motor shaft. The vibration energy transmitted to the rotating member 2 on the one side, thereby effectively reducing the vibration and noise generated during the operation of the motor and the rotating member 2.

Specifically, as shown in FIG. 1 and FIG. 8 , the rotating component 2 is further provided with a mounting groove 22 having an inner contour and an outer shape of the second elastic member 132 , and the mounting hole 21 is disposed along the concave bottom of the mounting groove 22 . The inner contour of the mounting hole 21 is disposed to match the outer contour of the hollow tube portion 1312, and the inner contour of the mounting groove 22 is disposed to cooperate with the outer contour of the second elastic member 132. The mounting structure of the motor and the rotating component provided by the embodiment of the invention, the rigid pressure plate 14 and the second elastic component The 132 is received in the mounting groove 22 of the rotating member 2 and sandwiched between the mounting groove 22 and the second mounting shaft 12 . The hollow tube portion 1312 of the first elastic member 131 is received in the mounting hole 21 and sandwiched between the rotating members. Between the inner wall of the mounting hole 21 and the outer wall of the second mounting shaft 12, the annular flange portion 1313 of the first elastic member 131 is caught outside the mounting hole 21 and sandwiched between the end surface of the rotating member 2 and the stepped surface 101.

The specific mounting process of the rotating component 2 on the motor is: firstly, the first elastic component 131 is sleeved on the first shaft portion 121 of the second mounting shaft 12 and the annular flange portion 1313 is abutted against the stepped surface 101. Then, the rotating member 2 is sleeved on the first elastic member 131; then the second elastic member 132 is sleeved on the second mounting shaft and completely received in the mounting groove 22 of the rotating member 2; then, the rigid pressing plate 14 is used. The sleeve is sleeved on the second mounting shaft 12 and is completely received in the receiving groove 1321 of the second elastic member 132. Finally, the nut is screwed onto the second shaft portion 122 of the second mounting shaft 12 and pressed. The rigid pressure plate 14 is tightened so that the rotating member 2 and the vibration damping assembly 13 can be effectively locked to the second mounting shaft body 12, thus completing the installation process of the rotating member 2 and the motor.

The mounting structure of the motor and the rotating component provided by the embodiment of the invention can be specifically applied to a fan or a range hood of an air conditioner or a heater or a fan of a washing machine, and the rotating component 2 can be an impeller, a turntable, a guide wheel, etc. The motor directly drives the rotating parts.

The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

a motor shaft, comprising a first mounting shaft for rotor mounting and a second mounting shaft for rotating component, further comprising: a vibration damping assembly mounted on the second mounting shaft, the damping The assembly includes a first elastic member, and the first elastic member is provided with a first shaft hole disposed in cooperation with the second mounting shaft body along a central position thereof, and the first elastic member passes through the first shaft hole sleeve Provided on the second mounting shaft body.
A motor shaft according to claim 1, further comprising a rigid pressure plate mounted on said second mounting shaft, said damping assembly further comprising an outer dimension larger than said first elastic member outer dimension a second elastic member, the rigid pressure plate is provided with a through hole, and the second elastic member is provided with a receiving groove disposed in cooperation with the outer surface of the rigid pressure plate and a concave bottom portion along the receiving groove a second shaft hole is disposed through the second shaft hole, and the second elastic shaft is sleeved on the second mounting shaft body with the receiving groove facing away from the first elastic member. The rigid pressure plate is sleeved on the second mounting shaft body and received in the receiving groove through the through hole, and the first elastic member is located at the first mounting shaft portion and the second elastic member between.
The motor shaft according to claim 1 or 2, wherein a radial dimension of said first mounting shaft body is larger than a radial dimension of said second mounting shaft body, said first mounting shaft body and said A joint portion of the second mounting shaft body forms a stepped surface, and an end of the first elastic member facing the first mounting shaft body abuts against the stepped surface.
A motor shaft according to claim 3, wherein said first elastic member is a member made of silicone rubber or polyurethane, and comprises an inner wall of the mounting hole and said second mounting member of said rotating member a hollow tube portion between the outer wall of the shaft and an annular flange portion that is trapped outside the mounting hole of the rotating member and interposed between the rotating member and the stepped surface, the annular convex portion The edge portion is protruded from one end of the hollow tube portion, and the first shaft hole is disposed through the hollow tube portion and the annular flange portion.
The motor shaft according to claim 2, wherein the outer contour of the rigid pressure plate, the inner contour of the accommodating groove, and the outer shape of the second elastic member are both rectangular.
The motor shaft according to claim 2 or 5, wherein the second mounting shaft body includes a first shaft portion and an outer diameter that are disposed in cooperation with the first shaft hole and the second shaft hole. a second shaft portion having an outer diameter of the first shaft portion and configured to cooperate with the through hole, and the first shaft portion is located between the first mounting shaft body and the second shaft portion, the first The elastic member and the second elastic member are sleeved on the first shaft portion, and the rigid pressure plate is sleeved on the second shaft portion.
The motor shaft according to claim 6, wherein the through hole is formed by a smooth arc surface and a flat surface joint, and the smooth circular surface is a circular arc surface having a curvature greater than a semi-circular degree, the second The shape of the shaft portion is matched with the shape of the through hole.
A motor shaft according to claim 6, further comprising: a locking member for restricting axial displacement displacement of said vibration damping assembly on said second mounting shaft, said locking member being fastened and mounted An end of the second shaft portion facing away from the first shaft portion and abutting against the rigid pressure plate.
An electric motor comprising a stator, a rotor mated with the stator, and a motor housing disposed outside the stator and the rotor, further comprising a motor shaft according to any one of claims 1 to 8, A rotor is mounted on the first mounting shaft of the motor shaft.
A mounting structure of a motor and a rotating component, comprising a rotating component, characterized by further comprising the motor of claim 9, the rotating component being sleeved on the damping component.