CN211930393U

CN211930393U - Rotor, motor and fan

Info

Publication number: CN211930393U
Application number: CN202020819767.8U
Authority: CN
Inventors: 迟闯; 左亚军
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-11-13
Anticipated expiration: 2030-05-15

Abstract

The application provides a rotor, a motor and a fan; the rotor includes the pivot and installs in the epaxial permanent magnet of commentaries on classics, and first bearing is installed to the one end of pivot, and first bearing is located the one end of permanent magnet, and the rotor still includes the bearing frame, and the bearing frame overlaps on first bearing, and the one end of bearing frame is equipped with keeps off the ring, keeps off and is equipped with the elastic washer between ring and the first bearing. The first bearing is arranged at one end of the rotor, the bearing seat is sleeved on the first bearing, the retaining ring is arranged on the bearing seat, the elastic gasket is arranged between the retaining ring and the first bearing, the elastic gasket can elastically abut against the first bearing when the first bearing is installed, pre-tightening is applied to the first bearing, so that when the bearing is used, the axial acting force of the rotating shaft generated by effective absorption load is applied, the relative position of the inner ring and the outer ring of the first bearing is adjusted, and therefore when the bearing is applied to a motor, stable operation of the motor is guaranteed, and reliability of the motor is improved.

Description

Rotor, motor and fan

Technical Field

The application belongs to the technical field of motors, and more specifically relates to a rotor, a motor and a fan.

Background

Along with the higher and higher requirement on the rotating speed of the motor, the working life of the corresponding motor is more and more greatly influenced by bearing factors. In addition, in order to reduce the diameter of the motor body, the motor is miniaturized, and higher requirements are put on the service life of the bearing.

At present miniaturized motor for improving motor assembly precision, generally make the part that needs the assembly reduce, and then make the assembling process succinct to promote the axiality of rotor and stator. However, during the assembly process, due to the size limitation of the motor body, it is difficult to apply a pre-tightening structure to the bearing, so that the working performance and reliability of the motor will be reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide a rotor, and the problem that in the prior art, an upper shaft of the rotor bears the size limitation of a motor body and a pre-tightening structure is difficult to apply is solved.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the utility model provides a rotor, including the pivot with install in change epaxial permanent magnet, first bearing is installed to the one end of pivot, first bearing is located the one end of permanent magnet, the rotor still includes the bearing frame, the bearing frame sleeve in on the first bearing, the one end of bearing frame is equipped with keeps off the ring, keep off the ring with be equipped with the elastic washer between the first bearing.

In one embodiment, the elastic washer elastically abuts against the outer ring of the first bearing.

In one embodiment, the inner diameter of the resilient washer is larger than the outer diameter of the inner race of the first bearing.

In one embodiment, a positioning ring table for positioning and supporting the elastic washer is arranged on one surface of the baffle ring close to the first bearing, and the inner diameter of the positioning ring table is larger than the outer diameter of the inner ring of the first bearing.

In one embodiment, the positioning ring platform is formed by protruding and extending the edge of one surface of the baffle ring, which is close to the first bearing.

In one embodiment, the resilient gasket is an O-ring, a flat gasket, a wave gasket, or a spring.

In one embodiment, the first bearing is sleeved with two bearing seats, the two bearing seats are arranged oppositely, the retaining rings of the two bearing seats are respectively located at two sides of the first bearing, and the elastic washers are respectively arranged between each retaining ring and the first bearing.

In one embodiment, the baffle ring is positioned at one end of the bearing seat far away from the permanent magnet; or the baffle ring is positioned at one end of the bearing seat close to the permanent magnet.

Another objective of the embodiments of the present application is to provide an electric motor, which includes a stator and a supporting frame, the supporting frame includes a plurality of supporting rods for supporting the stator, a first supporting ring for connecting one end of each of the supporting rods, and a second supporting ring for connecting the other end of each of the supporting rods, the electric motor further includes a rotor as described in any one of the above embodiments, the rotor is installed in the supporting frame, the bearing seat is fixed in the first supporting ring, and the second supporting ring is supported on the rotating shaft.

It is a further object of an embodiment of the present invention to provide a fan including a motor and an impeller as described in the previous embodiments, wherein the impeller is mounted on an end of the rotating shaft adjacent to the first bearing.

One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

the rotor that this application embodiment provided, one end through at the rotor sets up first bearing, and suit bearing frame on first bearing, and set up on the bearing frame and keep off the ring, set up the spring washer between keeping off ring and first bearing, thereby when the first bearing of installation, can make the spring washer elasticity support and hold first bearing, in order to exert the pretension to first bearing, so that when using, the axial effort of the edge pivot that the effective absorption load produced, adjust the relative position of first bearing inner circle and outer lane, so that when being applied to in the motor, guarantee that the motor operates steadily and improve motor reliability.

The motor that this application embodiment provided has used the rotor of above-mentioned any embodiment, and when the motor starts the operation, the elastic washer can absorb along the axial effort of pivot, adjusts the relative position of first bearing inner race and outer lane, guarantees that the motor operates steadily and improves the motor reliability.

The fan of this application embodiment has used the motor of above-mentioned any embodiment, can effectively guarantee impeller even running to absorb the axial effort that the impeller rotation produced and send out, guarantee fan operating stability and reliability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a fan provided in an embodiment of the present application;

FIG. 2 is an exploded view of the blower of FIG. 1;

FIG. 3 is a schematic structural view of the rotor portion of FIG. 2;

FIG. 4 is a cross-sectional structural view of the rotor portion of FIG. 3;

FIG. 5 is a schematic cross-sectional structural view of a rotor part of a second embodiment of the present application;

FIG. 6 is a schematic cross-sectional view of a rotor part according to a third embodiment of the present application;

FIG. 7 is a schematic structural diagram of a flat gasket provided in an embodiment of the present application;

FIG. 8 is a schematic structural view of an O-ring provided in an embodiment of the present application;

fig. 9 is a schematic side view of a wave washer according to an embodiment of the present disclosure.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-a fan;

10-a motor;

20-a rotor; 21-a rotating shaft; 211-an output terminal; 212-a sensing terminal; 22-a permanent magnet; 23-a gimbal ring; 24-a first bearing; 241-outer ring; 242-inner ring; 25-a bearing seat; 251-a baffle ring; 252-a positioning ring table; 26-a resilient gasket; 261-flat washer; 262-O-shaped ring; 263-wave washer; 27-a second bearing; 28-an induction magnet ring;

30-a stator;

40-a support frame; 41-a support bar; 42-a first support ring; 43-a second support ring;

51-impeller.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and fig. 2, a fan 100, a motor 10 and a rotor 20 provided in the present application will be described, wherein the fan 100 includes the motor 10 and an impeller 51.

The motor 10 includes a stator 30, a rotor 20, and a support frame 40, wherein the support frame 40 includes a plurality of support bars 41, a first support ring 42 and a second support ring 43, the first support ring 42 connects one end of each support bar 41, the second support ring 43 connects the other end of each support bar 41, two adjacent support bars 41 are spaced apart, teeth of the stator 30 may be inserted into corresponding positions between the two support bars 41, and a core yoke of each stator 30 may be supported on the corresponding support bar 41 to support the stator 30 through each support bar 41 so as to fix the stator 30. The rotor 20 is installed in the support frame 40 to position the rotor 20 and the stator 30 through the support frame 40, ensuring the coaxiality of the stator 30 and the rotor 20.

Referring to fig. 3 and 4, the rotor 20 includes a rotation shaft 21, a permanent magnet 22, a first bearing 24, a bearing seat 25, and an elastic washer 26; the permanent magnet 22 is mounted on the rotating shaft 21 so that the stator 30 drives the rotating shaft 21 to rotate. The first bearing 24 is installed at one end of the rotating shaft 21, and the first bearing 24 is located at one end of the permanent magnet 22 so that the rotating shaft 21 can rotate flexibly. The bearing seat 25 is sleeved on the first bearing 24, when being installed, the bearing seat 25 can be fixedly connected with the stator 30 to support the first bearing 24, one end of the bearing seat 25 is provided with the baffle ring 251, and the elastic gasket 26 is arranged between the baffle ring 251 and the first bearing 24, so that when being installed, pretightening force can be applied to the first bearing 24 through the elastic gasket 26, so that when being used, acting force generated by load along the axial direction of the rotating shaft 21 can be effectively absorbed, and when being rotated at high speed, the relative positions of the inner ring 242 and the outer ring 241 of the first bearing 24 can be adjusted, so that when being applied to the motor 10, the motor 10 can be ensured to stably operate, and the reliability of the motor 10 can be improved.

Referring to fig. 2 and 4, in the present embodiment, the bearing seat 25 is installed in the first support ring 42 of the support frame 40, and the second support ring 43 of the support frame 40 is rotatably installed on the rotating shaft 21. In some embodiments, when the support frame 40 is not provided, such as the motor 10 is provided with a housing to support the stator 30 and the rotor 20, the bearing housing 25 may be mounted on the housing, and the rotating shaft 21 may be rotatably supported on the housing.

In this embodiment, the impeller 51 is mounted on the rotating shaft 21, so that the motor 10 forms a fan 100 structure. In other embodiments, the motor 10 may also be used in other devices requiring the motor 10, that is, other loads may also be connected to the rotating shaft 21, such as a grinding wheel, to form an electric grinding wheel, etc.

The rotor 20 that this application embodiment provided, through set up first bearing 24 in the one end of rotor 20, and suit bearing frame 25 on first bearing 24, and set up on bearing frame 25 and keep off ring 251, set up elastic gasket 26 between keeping off ring 251 and first bearing 24, thereby when installing first bearing 24, can make elastic gasket 26 elasticity support first bearing 24, in order to exert the pretension to first bearing 24, in order to effectively absorb along the axial effort of pivot 21, adjust the relative position of first bearing 24 inner circle 242 and outer lane 241, so that when being applied to in the motor 10, guarantee that the motor 10 operates steadily and improve the motor 10 reliability.

The motor 10 provided by the embodiment of the application uses the rotor 20, when the motor 10 starts to operate, the elastic washer 26 can absorb the axial acting force along the rotating shaft 21, and adjust the relative position of the inner ring 242 and the outer ring 241 of the first bearing 24, thereby ensuring the stable operation of the motor 10 and improving the reliability of the motor 10.

The fan 100 of the embodiment of the application uses the motor 10, can effectively ensure the stable operation of the impeller 51, absorbs the axial acting force generated by the rotation of the impeller 51, and ensures the operation stability and reliability of the fan 100.

In one embodiment, referring to fig. 1 to fig. 3, the rotating shaft 21 is further provided with a second bearing 27, the second bearing 27 is disposed at the other end of the permanent magnet 22, that is, the first bearing 24 and the second bearing 27 are respectively located at two ends of the permanent magnet 22, and when in use, the second bearing 27 can be installed in the second supporting ring 43 to support the rotating shaft 21 in cooperation with the first bearing 24, so as to facilitate the flexible rotation of the rotating shaft 21. Of course, in some embodiments, a bearing bush or the like may be provided to support the rotating shaft 21 in cooperation with the first rotating shaft 21. Of course, in some embodiments, when the first bearing 24 can support the rotating shaft 21, only the first bearing 24 can be used to support the rotating shaft 21, for example, in some small fans, only the first bearing 24 can be installed on the rotating shaft 21.

In one embodiment, referring to fig. 2 and 3, a balance ring 23 is further installed on the rotating shaft 21 for performing dynamic balance calibration to better adjust the balance of the rotor 20 and ensure the rotor 20 rotates at a high speed in a balanced manner.

In one embodiment, referring to fig. 2 and 3, the permanent magnet 22 is mounted at both ends thereof to the balancing rings 23, respectively, for better alignment of dynamic balance, so that the rotating shaft 21 rotates smoothly at a high speed.

In one embodiment, referring to fig. 2 and 3, the rotating shaft 21 has an output end 211, the output end 211 is used for connecting a load, and the first bearing 24 and the bearing seat 25 are installed at the output end 211. I.e. the first bearing 24 and the bearing seat 25 are located at the end of the rotating shaft 21 near the load. In this embodiment, the first bearing 24 and the bearing seat 25 are located at one end of the rotating shaft 21 close to the impeller 51. The rotor 20 is applied, and when the rotating shaft 21 rotates, the elastic washer 26 in the bearing seat 25 can absorb the force along the axial direction of the rotating shaft 21 more effectively, and adjust the relative position of the inner ring 242 and the outer ring 241 of the first bearing 24, so as to ensure the smooth operation of the motor 10 and improve the reliability of the motor 10 when applied to the motor 10.

In one embodiment, referring to fig. 3 and 4, the rotating shaft 21 is provided with a magnetic induction ring 28 for inducing the rotating speed and angle of the rotating shaft 21.

In an embodiment, referring to fig. 3 and 4, the rotating shaft 21 has an induction end 212, the output end 211 and the induction end 212 are two ends of the rotating shaft 21, respectively, and the induction magnetic ring 28 is disposed at the induction end 212 of the rotating shaft 21, which can facilitate the layout of the position of the induction magnetic ring 28.

In one embodiment, referring to fig. 3 and 4, the first bearing 24 may be fixed on the rotating shaft 21 by bonding or interference fit. The second bearing 27 may also be fixed to the shaft 21 by bonding or interference fit.

In one embodiment, referring to fig. 4, the elastic washer 26 elastically supports against the outer ring 241 of the first bearing 24. Because the bearing seat 25 is sleeved on the first bearing 24, the bearing seat 25 is fixed with the outer ring 241 of the first bearing 24, the first bearing 24 is installed on the rotating shaft 21, the inner ring 242 of the first bearing 24 is fixed with the rotating shaft 21, and the elastic washer 26 is elastically abutted against the outer ring 241 of the first bearing 24, so that the relative position between the outer ring 241 and the inner ring 242 of the first bearing 24 can be better adjusted when the rotating shaft rotates at high speed.

In one embodiment, referring to fig. 4, the inner diameter of the elastic washer 26 is larger than the outer diameter of the inner ring 242 of the first bearing 24, so that the elastic washer 26 can better elastically abut against the outer ring 241 of the first bearing 24, and the interference of the inner ring 242 of the first bearing 24 with the elastic washer 26 can be avoided, so that the elastic washer 26 can elastically abut against the outer ring 241 of the first bearing 24 more flexibly. Of course, in some embodiments, when the elastic washer 26 abuts against the inner ring 242 of the first bearing 24, since the inner ring 242 of the first bearing 24 is fixed on the rotating shaft 21, the inner ring 242 of the first bearing 24 does not move relative to the rotating shaft 21, and the elastic washer 26 can still elastically abut against the outer ring 241 of the first bearing 24, i.e. a pre-tightening force can be applied to the outer ring 241 of the first bearing 24, and during high-speed rotation, the relative position between the outer ring 241 and the inner ring 242 of the first bearing 24 can be adjusted.

In one embodiment, referring to fig. 4, a positioning ring platform 252 is disposed on a surface of the baffle ring 251 close to the first bearing 24, an inner diameter of the positioning ring platform 252 is larger than an outer diameter of the inner ring 242 of the first bearing 24, and the positioning ring platform 252 is used for positioning and supporting the elastic washer 26, so as to facilitate installation of the elastic washer 26 and enable the elastic washer 26 to better apply a pre-tightening force to the outer ring 241 of the first bearing 24.

In one embodiment, referring to fig. 4, the positioning ring platform 252 is formed by protruding and extending an edge of a side of the retainer ring 251 close to the first bearing 24, so as to facilitate manufacturing and installation of the positioning elastic gasket 26.

In one embodiment, referring to fig. 4, the retainer ring 251 is located at an end of the bearing seat 25 away from the permanent magnet 22 to elastically push the first bearing 24 in a direction toward the permanent magnet 22, so as to apply a pre-tightening force to the first bearing 24 in the direction toward the permanent magnet 22, and when some load is connected to the rotating shaft 21, the axial force in the direction toward the permanent magnet 22 can be better absorbed, so that the motor 10 can be ensured to operate in a balanced manner, and the service life can be prolonged.

In one embodiment, referring to fig. 5, the retainer ring 251 is located at one end of the bearing seat 25 close to the permanent magnet 22 to elastically push the first bearing 24 in a direction toward the permanent magnet 22 so as to apply a pre-tightening force to the first bearing 24 in a direction away from the permanent magnet 22, so that when some load is connected to the rotating shaft 21, the axial force in the direction away from the permanent magnet 22 can be better absorbed, so as to ensure balanced operation of the motor 10 in use and improve the service life.

In an embodiment, referring to fig. 6, two bearing seats 25 are sleeved on the first bearing 24, the two bearing seats 25 are arranged oppositely, the baffle rings 251 of the two bearing seats 25 are respectively located at two sides of the first bearing 24, and an elastic washer 26 is respectively arranged between each baffle ring 251 and the first bearing 24, so that a certain pretightening force can be respectively applied to two sides of the first bearing 24 through the two elastic washers 26, and when the rotating shaft 21 is connected with a load to work, the axial force along the rotating shaft 21 can be better absorbed, so that the balanced operation of the motor 10 can be ensured in use, and the service life can be prolonged.

In one embodiment, referring to fig. 7, the resilient washer 26 may be a flat washer 261 to facilitate installation and ensure uniform force throughout the circumference of the first bearing 24.

In one embodiment, referring to fig. 8, the elastomeric gasket 26 may be an O-ring 262 to facilitate installation and reduce cost.

In one embodiment, the elastic washer 26 may be other structures, such as the wave washer 263 shown in fig. 9. In still other embodiments, the resilient washer 26 may be a standard resilient ring, spring, or the like.

In one embodiment, the resilient gasket 26 may be made of a low durometer material such as a rubber material or a thermoplastic elastomer.

The rotor 20 of the embodiment of the application can conveniently carry out dynamic balance calibration. When the bearing is applied to the motor 10 and used, the axial force generated by the load can be well absorbed, and the relative position between the outer ring 241 and the inner ring 242 of the first bearing 24 is adjusted, so that the rotating shaft 21 can be ensured to run well in balance. The motor 10 of the embodiment of the application can realize balanced high-speed operation and ensure good service life. The motor 10 of the embodiment of the present application may be applied to a household appliance, such as the blower 100, and may also be applied to a device such as an electric grinding wheel. The fan 100 of the embodiment of the present application can maintain the impeller 51 to rotate at a high speed, and can be applied to a blower 100, a vacuum cleaner, a compressor, and the like.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The rotor, including the pivot with install in epaxial permanent magnet rotates, first bearing is installed to the one end of pivot, first bearing is located the one end of permanent magnet, its characterized in that: the rotor further comprises a bearing seat, the bearing seat is sleeved on the first bearing, a retaining ring is arranged at one end of the bearing seat, and an elastic gasket is arranged between the retaining ring and the first bearing.

2. The rotor of claim 1, wherein: the elastic washer elastically abuts against the outer ring of the first bearing.

3. The rotor of claim 2, wherein: the inner diameter of the elastic washer is larger than the outer diameter of the inner ring of the first bearing.

4. The rotor of claim 2, wherein: and one surface of the baffle ring, which is close to the first bearing, is provided with a positioning ring table for positioning and supporting the elastic gasket, and the inner diameter of the positioning ring table is larger than the outer diameter of the inner ring of the first bearing.

5. The rotor of claim 4, wherein: the positioning ring platform is formed by extending the edge of one surface of the baffle ring close to the first bearing in a protruding mode.

6. The rotor of any one of claims 1-5, wherein: the elastic washer is an O-shaped ring, a flat washer, a wave washer or a spring.

7. The rotor of any one of claims 1-5, wherein: the first bearing is sleeved with two bearing seats, the two bearing seats are arranged oppositely, the baffle rings of the two bearing seats are respectively positioned at two sides of the first bearing, and the elastic washers are respectively arranged between each baffle ring and the first bearing.

8. The rotor of any one of claims 1-5, wherein: the baffle ring is positioned at one end of the bearing seat far away from the permanent magnet; or the baffle ring is positioned at one end of the bearing seat close to the permanent magnet.

9. The motor, including stator and braced frame, braced frame is including supporting a plurality of bracing pieces of stator, connect each first support ring of bracing piece one end and connect each the second support ring of bracing piece other end, its characterized in that: the electrical machine further comprising a rotor as claimed in any one of claims 1 to 8 mounted in the support frame, the bearing housing being secured in the first support ring, the second support ring being supported on the shaft.

10. The fan, its characterized in that: comprising a motor according to claim 9 and an impeller mounted on the shaft adjacent the first bearing.