CN108512345B - Bearing assembly and motor with same - Google Patents
Bearing assembly and motor with same Download PDFInfo
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- CN108512345B CN108512345B CN201810188406.5A CN201810188406A CN108512345B CN 108512345 B CN108512345 B CN 108512345B CN 201810188406 A CN201810188406 A CN 201810188406A CN 108512345 B CN108512345 B CN 108512345B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
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- Support Of The Bearing (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention provides a bearing assembly and a motor with the same. Through set up the elastic bearing cover in bearing and rigid bearing cover, through the cushioning effect of elastic bearing cover, reduced the wearing and tearing between rigid bearing cover and bearing, prolonged the life of bearing, adopt the elastic bearing cover can effectively reduce the noise that produces between bearing and the bearing cover, improved this bearing assembly's practicality and reliability.
Description
Technical Field
The invention relates to the technical field of motor equipment, in particular to a bearing assembly and a motor with the same.
Background
with the market development demand and the attention on energy conservation and emission reduction, the direct fluidization of the fan of the household appliance gradually becomes a trend, and the axial magnetic field motor is gradually popularized and applied with the performance advantage thereof at present.
In the prior art, the wave pad needs to be arranged in a bearing hole of a motor end cover during motor assembly, axial movement is prevented, certain pretightening force is given to a bearing, the cost of the wave pad is high, and cost saving is not facilitated. Further, as shown in fig. 1, the bearing chamber of the axial magnetic field motor is formed by directly rubbing, extruding and contacting the bearing 30 'and the hard bearing sleeve 10', the bearing is easily damaged, the bearing is easily subjected to electric corrosion, electric sparks are generated in severe cases, early failure is caused, the relative life of the axial magnetic field motor is shortened, and when the whole machine works, the noise is high, and the user experience is poor.
Disclosure of Invention
The invention mainly aims to provide a bearing assembly and a motor with the same, so as to solve the problem of serious bearing abrasion in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a bearing assembly including: a bearing portion; a hard bearing sleeve, wherein the bearing part is arranged in the hard bearing sleeve; and the elastic bearing sleeve is arranged in the rigid bearing sleeve and is positioned between the bearing part and the inner wall of the rigid bearing sleeve.
Further, hard bearing housing has first bearing chamber and the second bearing chamber of coaxial setting, and the bearing portion includes first bearing and second bearing, and the elastic bearing cover includes first bearing cover and second bearing cover, and first bearing sets up in first bearing chamber, and first bearing cover sets up in first bearing chamber and lies in between the inner wall of first bearing and first bearing chamber, and the second bearing sets up in the second bearing chamber, and the second bearing cover sets up in second bearing chamber and lies in between the inner wall of second bearing and second bearing chamber.
further, the first bearing housing includes: a first cylindrical body, an axis of which is arranged along an axial direction of the first bearing chamber; the first end of first supporter is connected with the tip of first cylindric body, and the second end of first supporter inwards extends along the radial direction of first cylindric body, and first supporter encloses with first cylindric body and establishes into first chamber that holds, and first bearing is located first chamber that holds.
further, the second bearing sleeve includes: a second cylindrical body, an axis of which is arranged along an axial direction of the second bearing chamber; and the first end of the second supporting body is connected with the end part of the second cylindrical body, the second end of the second supporting body extends inwards along the radial direction of the second cylindrical body, a second accommodating cavity is formed by the second supporting body and the second cylindrical body in an enclosing manner, and the second bearing is positioned in the second accommodating cavity.
Furthermore, the middle part of the rigid bearing sleeve is provided with an annular step for separating the first bearing chamber from the second bearing chamber, the first support body is abutted against a first table top of the annular step, and the second support body is abutted against a second table top opposite to the first table top.
Further, the elastic bearing sleeve further comprises: the first end of the connecting body is connected with the first supporting body, and the second end of the connecting body is connected with the second supporting body.
furthermore, the outer peripheral surface of at least one of the first bearing sleeve, the second bearing sleeve and the connector is provided with a reinforcing rib, and the reinforcing rib is arranged along the axial direction of the rigid bearing sleeve.
Further, a plurality of hollow holes are formed in the circumferential direction of the first bearing sleeve and/or the second bearing sleeve and are arranged at intervals.
The first bearing sleeve further comprises a first limiting ring, the first limiting ring is connected with the end portion of the first cylindrical body and arranged opposite to the first supporting body, the first limiting ring is located outside the first bearing chamber, the outer diameter of the first limiting ring is larger than the inner diameter of the first bearing chamber so that part of the first limiting ring is lapped on the end face, provided with the first bearing chamber, of the rigid bearing sleeve, and/or the second bearing sleeve further comprises a second limiting ring, the second limiting ring is connected with the end portion of the second cylindrical body and arranged opposite to the second supporting body, the second limiting ring is located outside the second bearing chamber, and the outer diameter of the second limiting ring is larger than the inner diameter of the first bearing chamber so that part of the second limiting ring is lapped on the end face, provided with the second bearing chamber, of the rigid bearing sleeve.
Furthermore, one of the first bearing sleeve and the first table top is provided with a first limiting column, the other is provided with a first positioning hole matched with the first limiting column, and/or one of the second bearing sleeve and the second table top is provided with a second limiting column, and the other is provided with a second positioning hole matched with the second limiting column.
Further, first bearing cover, connector and the integrative setting of second bearing cover, perhaps, first bearing cover sets up with connector is integrative, and second bearing cover sets up with connector detachably, and perhaps, second bearing cover sets up with connector is integrative, and first bearing cover sets up with connector detachably.
Further, at least one of the first support body, the second support body and the connecting body is an annular structure.
Further, the bearing assembly further comprises: and the rotating shaft is sequentially connected with the first bearing and the second bearing along the axis direction of the rigid bearing sleeve.
Furthermore, the inner wall surfaces of the first bearing chamber, the second bearing chamber and the annular step are provided with limiting grooves matched with the reinforcing ribs.
According to another aspect of the invention, there is provided an electric machine comprising a bearing assembly, the bearing assembly being as described above.
By applying the technical scheme of the invention, the elastic bearing sleeve is arranged in the bearing and the rigid bearing sleeve, the abrasion between the rigid bearing sleeve and the bearing is reduced through the damping action of the elastic bearing sleeve, the service life of the bearing is prolonged, the noise generated between the bearing and the bearing sleeve can be effectively reduced by adopting the elastic bearing sleeve, and the practicability and the reliability of the bearing assembly are improved.
drawings
the accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic cross-sectional structure of a prior art electric machine;
Fig. 2 shows a cross-sectional structural schematic of an embodiment of an electrical machine according to the invention;
FIG. 3 illustrates a schematic structural view of a first embodiment of a bearing assembly according to the present invention;
FIG. 4 shows a cross-sectional structural schematic view of a second embodiment of a bearing assembly according to the present invention;
FIG. 5 shows a cross-sectional structural schematic view of a third embodiment of a bearing assembly according to the present invention;
FIG. 6 shows an exploded view of a fourth embodiment of a bearing assembly according to the present invention;
FIG. 7 shows an exploded view of an embodiment five of a bearing assembly according to the present invention;
FIG. 8 shows a cross-sectional structural schematic view of embodiment six of a bearing assembly according to the present invention;
FIG. 9 shows a cross-sectional structural schematic view of embodiment seven of a bearing assembly according to the present invention;
FIG. 10 shows a cross-sectional structural schematic view of an embodiment eight of a bearing assembly according to the present invention;
Fig. 11 shows an exploded view of an embodiment nine of a bearing assembly according to the present invention.
Wherein the figures include the following reference numerals:
10. A hard bearing sleeve; 11. a first bearing chamber; 12. a second bearing chamber; 13. an annular step; 131. a first table top; 132. a second table top;
20. An elastic bearing housing; 21. a first bearing sleeve; 211. a first cylindrical body; 212. a first support; 213. a first accommodating chamber;
22. a second bearing housing; 221. a second cylindrical body; 222. a second support; 223. a second accommodating chamber;
23. A linker; 24. reinforcing ribs; 25. a first spacing collar; 26. a second limit ring; 27. hollowing out holes; 28. a first limit post; 281. a first positioning hole; 29. a second limit post;
30. a bearing portion; 31. a first bearing; 32. a second bearing.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
Referring to fig. 2 to 11, according to an embodiment of the present invention, an air outlet assembly is provided.
specifically, as shown in fig. 2 and 3, the bearing assembly includes a bearing portion 30, a hard bearing sleeve 10, and an elastic bearing sleeve 20, the bearing portion 30 is disposed in the hard bearing sleeve 10, and the elastic bearing sleeve 20 is disposed in the hard bearing sleeve 10 and between the bearing portion 30 and an inner wall of the hard bearing sleeve 10.
In this embodiment, through set up the elastic bearing cover in bearing and rigid bearing cover, through the cushioning effect of elastic bearing cover, reduced the wearing and tearing between rigid bearing cover and the bearing, prolonged the life of bearing, adopt the elastic bearing cover can effectively reduce the noise that produces between bearing and the bearing cover, improved this bearing assembly's practicality and reliability.
As shown in fig. 2 and 4, the hard bearing sleeve 10 has a first bearing chamber 11 and a second bearing chamber 12 coaxially disposed, the bearing portion 30 includes a first bearing 31 and a second bearing 32, the elastic bearing sleeve 20 includes a first bearing sleeve 21 and a second bearing sleeve 22, the first bearing 31 is disposed in the first bearing chamber 11, the first bearing sleeve 21 is disposed in the first bearing chamber 11 and located between the first bearing 31 and an inner wall of the first bearing chamber 11, the second bearing 32 is disposed in the second bearing chamber 12, and the second bearing sleeve 22 is disposed in the second bearing chamber 12 and located between the second bearing 32 and an inner wall of the second bearing chamber 12. The elastic bearing sleeve is arranged in the bearing and the rigid bearing sleeve, so that the abrasion between the rigid bearing sleeve and the bearing is reduced.
As shown in fig. 4, the first bearing housing 21 includes a first cylindrical body 211 and a first supporting body 212, an axis of the first cylindrical body 211 is arranged along an axial direction of the first bearing chamber 11, a first end of the first supporting body 212 is connected to an end portion of the first cylindrical body 211, a second end of the first supporting body 212 extends inward along a radial direction of the first cylindrical body 211, the first supporting body 212 and the first cylindrical body 211 enclose a first accommodating cavity 213, and the first bearing 31 is located in the first accommodating cavity 213. The arrangement is convenient for the first bearing to be arranged in the cylindrical body, and the first bearing absorbs vibration from the circumferential direction and the end face of the bearing, so that the vibration absorption effect is enhanced.
Further, the second bearing sleeve 22 includes a second cylindrical body 221 and a second supporting body 222, an axis of the second cylindrical body 221 is arranged along an axial direction of the second bearing chamber 12, a first end of the second supporting body 222 is connected with an end portion of the second cylindrical body 221, a second end of the second supporting body 222 extends inward along a radial direction of the second cylindrical body 221, the second supporting body 222 and the second cylindrical body 221 are enclosed into a second accommodating cavity 223, and the second bearing 32 is located in the second accommodating cavity 223. The arrangement is convenient for the second bearing to be arranged in the cylindrical body, and the second bearing absorbs the vibration from the circumferential direction and the end face of the bearing, so that the vibration absorption effect is enhanced.
As shown in fig. 4, the hard bearing housing 10 is provided at a middle portion thereof with an annular step 13 for separating the first bearing chamber 11 and the second bearing chamber 12, the first support 212 abuts against a first land 131 of the annular step 13, and the second support 222 abuts against a second land 132 opposite to the first land 131. This arrangement facilitates the use of the annular step to provide a plurality of bearings.
as shown in fig. 8 to 9, the elastic bearing housing 20 further includes a connecting body 23, a first end of the connecting body 23 is connected to the first supporting body 212, and a second end of the connecting body 23 is connected to the second supporting body 222. The arrangement is convenient for the elastic bearing sleeve to be more stably connected with the rigid bearing sleeve and the bearing.
as shown in fig. 2, 5, 9 and 10, a rib 24 is provided on an outer peripheral surface of at least one of the first bearing sleeve 21, the second bearing sleeve 22 and the connecting body 23, and the rib 24 is provided along an axial direction of the rigid bearing sleeve 10. The arrangement makes the elastic bearing sleeve more firmly connected with the rigid bearing sleeve and the bearing.
as shown in fig. 7, a plurality of through holes 27 are formed in the circumferential direction of the first bearing housing 21 or the second bearing housing 22, and the plurality of through holes 27 are provided at intervals, but of course, a plurality of through holes may be formed in both the first bearing housing 21 and the second bearing housing 22. And the thickness of the ring body at the non-hollow hole is slightly larger than the inner diameter of the bearing chamber. The arrangement is convenient for improving the material utilization rate and improving the heat dissipation performance.
as shown in fig. 4 and 8, the first bearing housing 21 further includes a first limiting ring 25, the first limiting ring 25 is connected to the end of the first cylindrical body 211 and is disposed opposite to the first supporting body 212, the first limiting ring 25 is located outside the first bearing chamber 11, the outer diameter of the first limiting ring 25 is larger than the inner diameter of the first bearing chamber 11 so that part of the first limiting ring 25 is overlapped on the end surface of the rigid bearing housing 10, where the first bearing chamber 11 is formed, or the second bearing housing 22 further includes a second limiting ring 26, the second limiting ring 26 is connected to the end of the second cylindrical body 221 and is disposed opposite to the second supporting body 222, the second limiting ring 26 is located outside the second bearing chamber 12, and the outer diameter of the second limiting ring 26 is larger than the inner diameter of the first bearing chamber 11 so that part of the rigid second limiting ring 26 is overlapped on the end surface of the bearing housing 10, where the second bearing chamber 12 is formed. Of course, the first bearing sleeve and the second bearing sleeve can be provided with the first limiting ring and the second limiting ring, so that the elastic bearing sleeve is connected with the rigid bearing sleeve more firmly.
as shown in fig. 6 and 11, one of the first bearing sleeve 21 and the first table-board 131 is provided with a first position-limiting post 28, and the other is provided with a first positioning hole 281 adapted to the first position-limiting post 28, or one of the second bearing sleeve 22 and the second table-board 132 is provided with a second position-limiting post 29, and the other is provided with a second positioning hole adapted to the second position-limiting post 29. Of course, one of the first bearing sleeve 21 and the first table 131 and one of the second bearing sleeve 22 and the second table 132 may be provided with a spacing post, so that the elastic bearing sleeve is connected with the rigid bearing sleeve more firmly.
In the present embodiment, the first bearing sleeve 21, the connecting body 23 and the second bearing sleeve 22 are integrally provided, or the first bearing sleeve 21 is integrally provided with the connecting body 23, and the second bearing sleeve 22 is detachably provided with the connecting body 23, or the second bearing sleeve 22 is integrally provided with the connecting body 23, and the first bearing sleeve 21 is detachably provided with the connecting body 23. The arrangement is convenient for the elastic bearing sleeve to be more conveniently connected with the rigid bearing sleeve.
Further, at least one of the first support body 212, the second support body 222 and the connection body 23 is a ring-shaped structure. The arrangement is convenient for the elastic bearing sleeve to be connected with the rigid bearing sleeve more firmly.
In this embodiment, the bearing assembly further comprises a rotating shaft, which is sequentially connected with the first bearing 31 and the second bearing 32 along the axial direction of the hard bearing sleeve 10.
In the present embodiment, the inner wall surfaces of the first bearing chamber 11, the second bearing chamber 12 and the annular step 13 are provided with a stopper groove that engages with the rib 24. The arrangement is convenient for the elastic bearing sleeve to be connected with the rigid bearing sleeve more firmly.
The bearing assembly in the above embodiment can also be used in the technical field of motor equipment, that is, according to another aspect of the present invention, there is provided a motor, comprising the bearing assembly in the above embodiment.
In the prior art, a wave pad needs to be arranged in a bearing hole of a motor end cover during motor assembly, axial movement is prevented, certain pretightening force is given to a bearing, and the cost of the wave pad is high. In the application, the stepped elastic bearing sleeve is additionally arranged in the bearing chamber, so that the wave pad can be replaced, and the cost is saved.
when the traditional axial magnetic field motor moves integrally, the vibration of the rotor side affects the stator side, so that the problem of poor integral noise is caused. By adopting the motor structure in the embodiment, the motor structure is integrated or the elastic bearing sleeve with 2 units separated is arranged between the rigid bearing sleeve and the bearing, so that the problem of high noise of the traditional motor is solved on the energy transmission path, and the noise reduction effect is realized.
The bearing chamber of the traditional axial magnetic field motor is in direct friction extrusion contact between the bearing and the rigid bearing sleeve, and the bearing and the rigid bearing sleeve are easily damaged.
by adopting the elastic bearing sleeve, the problem of high cost caused by adopting a wave pad in the traditional axial magnetic field is avoided. The elastic bearing sleeve is made of insulating materials, and the risk of electric corrosion of the bearing can be effectively weakened.
By adopting the rotor structure, the hard bearing sleeve is prevented from being in direct contact with the bearing, the design of the elastic bearing sleeve optimizes the problem of motor noise, and the noise reduction effect is achieved. The bearing assembly with the structure can reduce the damage between the rigid bearing sleeve and the bearing when the bearing is pressed at one time, so that the problem of short service life between the rigid bearing sleeve and the bearing is solved, and the stepped elastic bearing sleeve can replace a wave pad.
The bearing chamber of the traditional axial magnetic field motor is formed by direct friction extrusion contact and axial magnetic pull between the bearing and the rigid bearing sleeve, so that the bearing and the rigid bearing sleeve are easily damaged, and when the bearing is pressed, the bearing sleeve avoids the direct contact between the rigid bearing sleeve and the bearing, so that the problem that the service life of the bearing of the traditional axial magnetic field motor is short relative to that of the rigid bearing sleeve is solved.
In the motor structure, a rigid bearing sleeve provided with two bearing chambers and an elastic bearing sleeve are tightly matched between the bearings, and a step structure can be arranged in the rigid bearing sleeve to form a tight-matching clamping position.
The elastic bearing sleeve can be designed to be uniformly distributed and hollowed, and the hollowed surface is positioned on the surface of the outer ring of the bearing, so that the heat dissipation area is increased, and the material benefit rate is improved.
the rotor structure solves the problem of direct friction connection between a hard bearing sleeve and a bearing between a bearing chamber of a traditional motor, reduces damage between the bearing and the hard bearing sleeve, and improves the problem of relative service life of the bearing and the bearing sleeve of the traditional axial magnetic field motor. Noise problem in the motor motion process is improved, promote product property ability, weaken the bearing and produce the galvanic corrosion risk, this structure can do benefit to and carry out actual processing production and volume production application.
as shown in figure 3, the rotor of the invention consists of a rotor, a hard bearing sleeve, a bearing and an elastic bearing sleeve.
As shown in fig. 4 and 8, the elastic bearing housing is composed of 1 or 2 unit elastic bearing housings according to performance requirements. The problem of poor noise of the axial magnetic field motor is solved. The damage between the bearing and the hard bearing sleeve is reduced, the service life is prolonged, the electric corrosion risk of the bearing of the traditional axial magnetic field motor is weakened, and the process bottleneck of the rotor of the traditional axial magnetic field motor is solved.
As shown in fig. 8, the elastic bearing sleeve has a step structure, and 1 or 2 unit elastic bearing sleeves can be selectively used to be connected between the bearing and the rigid bearing sleeve according to installation requirements.
As shown in fig. 5, 9 and 10, the elastic bearing sleeve has a structure with a reinforcing rib, and can be selectively connected with the hard bearing sleeve and the bearing at the joint with the rib in a matching manner or connected with the rigid bearing sleeve at the middle position of the rigid bearing sleeve in an integrated manner according to performance requirements.
During installation, the rigid bearing sleeve is pressed in, the elastic bearing sleeve is placed into the rigid bearing sleeve through extrusion, and finally the upper bearing and the lower bearing are distributed and pressed into the rigid bearing sleeve.
In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. a bearing assembly, comprising:
A bearing section (30);
A hard bearing sleeve (10), wherein the bearing part (30) is arranged in the hard bearing sleeve (10);
The elastic bearing sleeve (20) is arranged in the hard bearing sleeve (10) and is positioned between the bearing part (30) and the inner wall of the hard bearing sleeve (10);
the hard bearing sleeve (10) is provided with a first bearing chamber (11) and a second bearing chamber (12) which are coaxially arranged, the bearing portion (30) comprises a first bearing (31) and a second bearing (32), the elastic bearing sleeve (20) comprises a first bearing sleeve (21) and a second bearing sleeve (22), the first bearing (31) is arranged in the first bearing chamber (11), the first bearing sleeve (21) is arranged in the first bearing chamber (11) and is positioned between the first bearing (31) and the inner wall of the first bearing chamber (11), the second bearing (32) is arranged in the second bearing chamber (12), and the second bearing sleeve (22) is arranged in the second bearing chamber (12) and is positioned between the second bearing (32) and the inner wall of the second bearing chamber (12);
The first bearing sleeve (21) comprises:
a first cylindrical body (211), an axis of the first cylindrical body (211) being disposed along an axial direction of the first bearing chamber (11);
A first support body (212), a first end of the first support body (212) is connected with an end of the first cylindrical body (211), a second end of the first support body (212) extends inwards along a radial direction of the first cylindrical body (211), the first support body (212) and the first cylindrical body (211) are enclosed to form a first accommodating cavity (213), and the first bearing (31) is located in the first accommodating cavity (213);
The second bearing sleeve (22) comprises:
a second cylindrical body (221), an axis of the second cylindrical body (221) being disposed along an axial direction of the second bearing chamber (12);
A second supporting body (222), a first end of the second supporting body (222) is connected with an end of the second cylindrical body (221), a second end of the second supporting body (222) extends inwards along a radial direction of the second cylindrical body (221), the second supporting body (222) and the second cylindrical body (221) enclose a second accommodating cavity (223), and the second bearing (32) is located in the second accommodating cavity (223);
An annular step (13) for separating the first bearing chamber (11) from the second bearing chamber (12) is arranged in the middle of the hard bearing sleeve (10), the first support body (212) is abutted with a first table top (131) of the annular step (13), and the second support body (222) is abutted with a second table top (132) opposite to the first table top (131);
The elastic bearing sleeve (20) further comprises:
A connecting body (23), wherein a first end of the connecting body (23) is connected with the first supporting body (212), and a second end of the connecting body (23) is connected with the second supporting body (222);
And a reinforcing rib (24) is arranged on the peripheral surface of at least one of the first bearing sleeve (21), the second bearing sleeve (22) and the connecting body (23), and the reinforcing rib (24) is arranged along the axial direction of the hard bearing sleeve (10).
2. Bearing assembly according to claim 1, characterized in that the first bearing sleeve (21) and/or the second bearing sleeve (22) are provided circumferentially with a plurality of hollowed-out holes (27), the plurality of hollowed-out holes (27) being provided at intervals.
3. The bearing assembly of claim 1,
The first bearing sleeve (21) further comprises a first limiting ring (25), the first limiting ring (25) is connected with the end portion of the first cylindrical body (211) and is arranged opposite to the first supporting body (212), the first limiting ring (25) is located outside the first bearing chamber (11), the outer diameter of the first limiting ring (25) is larger than the inner diameter of the first bearing chamber (11) so that part of the first limiting ring (25) is lapped on the end face, provided with the first bearing chamber (11), of the rigid bearing sleeve (10), and/or
the second bearing sleeve (22) further comprises a second limiting ring (26), the second limiting ring (26) is connected with the end portion of the second cylindrical body (221) and arranged opposite to the second support body (222), the second limiting ring (26) is located outside the second bearing chamber (12), and the outer diameter of the second limiting ring (26) is larger than the inner diameter of the first bearing chamber (11) so that part of the second limiting ring (26) is lapped on the end face, provided with the second bearing chamber (12), of the hard bearing sleeve (10).
4. The bearing assembly of claim 1,
One of the first bearing sleeve (21) and the first table top (131) is provided with a first limiting column (28), and the other is provided with a first positioning hole (281) matched with the first limiting column (28), and/or
One of the second bearing sleeve (22) and the second table top (132) is provided with a second limiting column (29), and the other one is provided with a second positioning hole matched with the second limiting column (29).
5. the bearing assembly of claim 1,
The first bearing sleeve (21), the connecting body (23) and the second bearing sleeve (22) are integrally arranged, or,
the first bearing sleeve (21) and the connecting body (23) are integrally arranged, the second bearing sleeve (22) and the connecting body (23) are detachably arranged, or,
the second bearing sleeve (22) and the connecting body (23) are integrally arranged, and the first bearing sleeve (21) and the connecting body (23) are detachably arranged.
6. The bearing assembly according to claim 1, characterized in that at least one of said first supporting body (212), said second supporting body (222) and said connecting body (23) is an annular structure.
7. The bearing assembly of claim 1, wherein the bearing assembly further comprises:
And the rotating shaft is sequentially connected with the first bearing (31) and the second bearing (32) along the axis direction of the hard bearing sleeve (10).
8. the bearing assembly according to claim 1, characterized in that the inner wall surfaces of the first bearing chamber (11), the second bearing chamber (12) and the annular step (13) are provided with a limiting groove which is matched with the reinforcing rib (24).
9. an electrical machine comprising a bearing assembly, wherein the bearing assembly is a bearing assembly according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188406.5A CN108512345B (en) | 2018-03-07 | 2018-03-07 | Bearing assembly and motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188406.5A CN108512345B (en) | 2018-03-07 | 2018-03-07 | Bearing assembly and motor with same |
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| Publication Number | Publication Date |
|---|---|
| CN108512345A CN108512345A (en) | 2018-09-07 |
| CN108512345B true CN108512345B (en) | 2019-12-06 |
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| CN201810188406.5A Active CN108512345B (en) | 2018-03-07 | 2018-03-07 | Bearing assembly and motor with same |
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|---|---|---|---|---|
| CN110535284B (en) * | 2019-10-08 | 2024-04-05 | 河南澈蓝环保技术有限公司 | High-precision self-balancing mute motor |
| WO2022127026A1 (en) * | 2020-12-15 | 2022-06-23 | 稻津电机(珠海)有限公司 | Small-sized high-speed fan |
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| JPH0767284A (en) * | 1993-08-27 | 1995-03-10 | Sanyo Electric Co Ltd | Bearing unit for motor |
| JPH11234956A (en) * | 1998-02-16 | 1999-08-27 | Nippon Electric Ind Co Ltd | Vibration damping structure of sr motor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108512345A (en) | 2018-09-07 |
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Address after: 519070 Guangdong city of Zhuhai Province Qianshan No. six Applicant after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Applicant after: Zhuhai Kaibang Motor Manufacture Co., Ltd. Address before: Doumen Longshan Town of Doumen District of Zhuhai city in Guangdong province 519110 two West Road No. six Applicant before: Zhuhai Kaibang Motor Manufacture Co., Ltd. Applicant before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI |
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