CN110380557B - Plastic package motor and air conditioner - Google Patents
Plastic package motor and air conditioner Download PDFInfo
- Publication number
- CN110380557B CN110380557B CN201910571864.1A CN201910571864A CN110380557B CN 110380557 B CN110380557 B CN 110380557B CN 201910571864 A CN201910571864 A CN 201910571864A CN 110380557 B CN110380557 B CN 110380557B
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- Prior art keywords
- bearing
- plastic package
- elastic sheet
- conductive elastic
- main body
- Prior art date
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- 238000005452 bending Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000012634 fragment Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to a plastic package motor and an air conditioner, and belongs to the technical field of plastic package motors, wherein the plastic package motor comprises a rotor assembly, a first bearing, a second bearing, a conductive elastic sheet, a bearing cover and a stator assembly with a bearing mounting groove; the first bearing is arranged in the bearing mounting groove, the bearing cover is covered at the notch of the bearing mounting groove and is provided with a bearing chamber, the second bearing is arranged in the bearing chamber, and the outer rings of the first bearing and the second bearing are contacted with the conductive elastic sheet; the rotor assembly is arranged on one side of the bearing cover, which is far away from the stator assembly, and the rotating shaft of the rotor assembly penetrates through the inner rings of the first bearing and the second bearing.
Description
Technical Field
The invention belongs to the technical field of plastic package motors, and particularly relates to a plastic package motor and an air conditioner.
Background
The plastic package motor is a development trend of the future motor industry, the bearing in the traditional plastic package motor can be subjected to electrolytic corrosion to cause uneven outer circumferential surface of the bearing, the service life of the bearing is reduced, the noise is increased, and how to alleviate or avoid bearing pitting corrosion is a problem which needs to be solved in the plastic package motor.
The bearing anti-electric corrosion method adopted by the plastic package motor at present mainly comprises the steps of sticking a conductive adhesive tape on a plastic package shell to connect the front end cover and the rear end cover of the motor, but has low reliability and great potential safety hazard; or the stator core is connected with the end cover by the contact pin, but the method is unreliable, and the method cannot solve the problem of electrolytic corrosion of the bearing of the plastic package motor.
Disclosure of Invention
The invention provides a plastic package motor which is used for solving the technical problem of low reliability of the traditional plastic package motor bearing in the process of preventing electric corrosion.
The invention is realized by the following technical scheme: a plastic package motor comprises a rotor assembly, a first bearing, a second bearing, a conductive spring piece, a bearing cover and a stator assembly with a bearing mounting groove;
The first bearing is arranged in the bearing mounting groove, the bearing cover covers the notch of the bearing mounting groove and is provided with a bearing chamber, the second bearing is arranged in the bearing chamber, and the outer rings of the first bearing and the second bearing are both contacted with the conductive elastic sheet;
the rotor assembly is arranged on one side of the bearing cover away from the stator assembly, and the rotating shaft of the rotor assembly penetrates through the first bearing and the inner ring of the second bearing.
Further, in order to better realize the invention, at least two protrusions are arranged on the conductive elastic sheet, the first bearing outer ring is propped against the top of one protrusion, and the second bearing outer ring is propped against the top of the other protrusion.
Further, in order to better realize the invention, the protrusion is a structure formed by bending the main body of the conductive elastic sheet.
Further, in order to better realize the invention, the width of the protrusion gradually decreases from one side close to the main body of the conductive elastic sheet to one side far away from the main body of the conductive elastic sheet, and the included angles between the two sides, where the protrusion is connected with the main body of the conductive elastic sheet, and the main body of the conductive elastic sheet are obtuse angles.
Further, in order to better implement the present invention, the cross-sectional shape of the protrusion is a trapezoid or a circular arc.
Further, in order to better realize the invention, two ends of the main body of the conductive elastic sheet are respectively provided with a radial positioning block, the bearing cover and the stator assembly are respectively provided with a clamping groove, and the two radial positioning blocks are respectively inserted into the two clamping grooves.
Further, in order to better realize the invention, the radial positioning block comprises a transverse plate and a vertical plate, one end of the vertical plate is connected to the middle part of the transverse plate to form a T-shaped structure, the other end of the vertical plate is vertically connected to the end part of the main body of the conductive elastic sheet, and the clamping groove is a T-shaped groove matched with the radial positioning block.
Further, in order to better realize the invention, the notch of the clamping groove is provided with a guiding bevel edge.
Further, in order to better realize the invention, the thickness of the conductive spring plate is 0.3-0.8mm.
Further, in order to better realize the invention, the transverse plate, the vertical plate and the conductive elastic sheet are integrally formed.
The invention also provides an air conditioner which is used for solving the technical problem that the service life of the air conditioner in the prior art is not long due to the fact that the bearing pitting corrosion is prevented by adopting the traditional function.
The invention is realized by the following technical scheme: an air conditioner comprises the plastic package motor.
Compared with the prior art, the invention has the following beneficial effects:
(1) The plastic package motor provided by the invention has the advantages that the first bearing is arranged in the bearing mounting groove on the stator assembly, the bearing cover is covered at the notch of the bearing mounting groove, the second bearing is arranged in the bearing chamber on the bearing cover, the rotor assembly is arranged on one side of the bearing cover far away from the stator assembly, and the rotating shaft of the rotor assembly penetrates through the first bearing and the inner ring of the second bearing, so that the first bearing and the second bearing are arranged between the rotor assembly and the stator assembly, namely, the two bearings are arranged on the same side of the rotor assembly, the distance between the two bearings is reduced, and the conductive spring piece is contacted with the first bearing and the second bearing, so that electricity is conducted between the first bearing and the second bearing.
(2) The air conditioner provided by the invention has the advantages that due to the adoption of the plastic package motor, the service life of the motor and the service life of the whole air conditioner are longer, and the noise is smaller because the plastic package motor is electrically etched to be low in the use process.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a plastic package motor according to the present invention;
FIG. 2 is an enlarged partial view of area A of FIG. 1;
fig. 3 is a sectional view of the plastic package motor in the present invention in an exploded state;
FIG. 4 is an enlarged partial view of region B in FIG. 3;
Fig. 5 is a schematic structural view of the plastic package motor in another explosion state;
FIG. 6 is another view of the structure of FIG. 5;
FIG. 7 is an enlarged partial view of region C of FIG. 5;
fig. 8 is a partial enlarged view of region D in fig. 6;
Fig. 9 is a schematic structural diagram of a conductive spring plate in the present invention.
In the figure:
1-a rotor assembly; 11-a rotating shaft;
2-a first bearing;
3-a second bearing;
4-a conductive spring piece; 41-bulge; 42-radial positioning blocks; 421-cross plate; 422-risers;
5-a bearing cap; 51-bearing chamber;
6-stator assembly; 61-bearing mounting grooves;
7-clamping grooves; 71-a guide bevel;
8-end cap.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
Example 1:
The present embodiment provides a plastic package motor for solving the problem that the anti-electric corrosion technology of the plastic package motor in the prior art is unreliable, the plastic package motor includes a rotor assembly 1, a first bearing 2, a second bearing 3, a conductive spring plate 4, a bearing cover 5 and a stator assembly 6, the stator assembly 6 and the rotor assembly 1 together form a core part of the plastic package motor for converting electric energy into kinetic energy, the stator assembly 6 has a bearing mounting groove 61, the first bearing 2 is mounted in the bearing mounting groove 61, the bearing cover 5 covers a notch of the bearing mounting groove 61, specifically, the plastic package part of the stator assembly 6 is thickened and forms a slot at the notch of the bearing mounting groove 61, and the bearing cover 5 is inserted in the slot and fixed by interference or fixed by a screw.
The bearing cover 5 is provided with a bearing chamber 51, the second bearing 3 is installed in the bearing chamber 51 and is opposite to and concentric with the first bearing 2, at this time, the bearing cover 5 not only can cover the bearing installation groove 61, but also can install the second bearing 3 so that the distance between the first bearing 2 and the second bearing 3 is closer, the rotating shaft 11 of the rotor assembly 1 is penetrated in the inner rings of the first bearing 2 and the second bearing 3, the rotor assembly 2 is positioned at one side of the bearing cover 5 far away from the stator assembly 6, the stator assembly 6 is also covered with the end cover 8, and the rotor assembly 1 is positioned between the end cover 8 and the stator assembly 6. With this structure, the first bearing 2 and the second bearing 3 are located between the rotor assembly 1 and the stator assembly 6, that is, the first bearing 2 and the second bearing 3 are located on the same side of the rotor assembly 1, and the distance between the two is smaller, so that the effect of reducing the current of the plastic-sealed motor shaft can be achieved.
In addition, the conductive spring 4 is of a thin sheet structure, and has elasticity and good conductive performance, and the conductive spring 4 is in contact with the first bearing 2 and the second bearing 3, so that the two bearings can be conducted by using the conductive spring 4, and the voltage difference between the first bearing 2 and the second bearing 3 is reduced to zero.
Through the above-mentioned two modes, namely two bearings set up in the same side of rotor subassembly 1 and utilize electrically conductive shell fragment 4 to switch on first bearing 2 and second bearing 3, like this, can play better effect that prevents bearing galvanic corrosion to the structure is simpler reliable, almost need not to change plastic envelope motor and originally the structure, and processing cost is lower.
Example 2:
In this embodiment, as a preferred implementation manner of embodiment 1, at least two protrusions 41 are disposed on the conductive elastic sheet 4 in this embodiment, the outer ring of the first bearing 2 abuts against the top of one of the protrusions 41, and the outer ring of the second bearing 3 abuts against the top of the other protrusion 41, and it is noted that the top of the protrusion 41 refers to the end of the protrusion 41 away from the conductive elastic sheet 4.
With this structure, since the conductive spring piece 4 is a thin sheet structure, the two protrusions 41 can ensure that the conductive spring piece 4 can be in hundred percent contact with the outer ring of the bearing, so as to ensure that the conduction effect between the first bearing 2 and the second bearing 3 is optimal.
As a preferred embodiment of the present embodiment, the number of the protrusions 41 is two in the present embodiment, and the positions of the two protrusions 41 correspond to the positional relationship between the first bearing 2 and the second bearing 3 after being mounted. In addition, the protrusion 41 is actually a structure formed by bending the main body of the conductive spring 4, and it is noted that the main body of the conductive spring 4 is used for distinguishing from the protrusion 41, and the protrusion 41 is also actually a part of the conductive spring 4, so that the main body of the conductive spring 4 is used for distinguishing. By adopting the structure, the bulge 41 is a structure formed by bending the conductive elastic sheet 4, so that the connection stability between the bulge 41 and the conductive elastic sheet 4 is higher, and the bulge 41 also has certain elasticity, so as to obtain better contact effect with the bearing outer ring.
The main body of the conductive spring piece 4 in the embodiment is of a thin-wall straight sheet structure, the thickness of the conductive spring piece is 0.3-0.8mm, and the conductive spring piece has good elasticity and conductivity and is quite convenient to install.
Of course, the conductive spring piece 4 may have any other shape as long as it is capable of conducting the first bearing 2 and the second bearing 3.
Example 3:
In this embodiment, as a preferred implementation manner of the above embodiment, the width of the protrusion 41 in this embodiment gradually decreases from the side close to the main body of the conductive elastic sheet 4 toward the side far from the main body of the conductive elastic sheet 4, so that a guiding edge is formed at the position where the main body of the conductive elastic sheet 4 is connected with the protrusion 41, so as to facilitate the clamping into the bearing. It should be noted that, the included angles between the two sides of the protrusion 41 connected to the main body of the conductive elastic sheet 4 and the main body of the conductive elastic sheet 4 are all obtuse angles.
As a preferred embodiment of the present embodiment, the cross-sectional shape of the projection 41 in the present embodiment is an isosceles trapezoid or a circular arc. When the elastic piece is clamped in, the bevel edge of the isosceles trapezoid and the arc surface of the arc shape can form better abdication on the side wall of the bearing, and the elastic parts of the protrusion 41 and the main body of the conductive elastic piece 4 can be used for assembling smoothly.
The shape of the protrusion 41 in this embodiment may be other shapes, as long as the width of the protrusion 41 is ensured to gradually decrease from the side close to the main body of the conductive elastic sheet to the side far away from the main body of the conductive elastic sheet, and the included angles between the two sides of the protrusion 41 connected with the main body of the conductive elastic sheet 4 and the main body of the conductive elastic sheet 4 are obtuse angles.
Example 4:
as a specific implementation manner of the foregoing embodiment, the two ends of the main body of the conductive elastic sheet 4 in this embodiment are respectively provided with a radial positioning block 42, and it should be noted that, the radial direction refers to the radial direction of the rotating shaft 11. The bearing cover 5 and the stator assembly 6 are respectively provided with a clamping groove 7, and two radial positioning blocks 42 are respectively inserted into the two clamping grooves 7. In this way the conductive dome 4 is mounted, in particular the conductive dome 4 is mounted on the bearing cap 5 and the stator assembly 6. During installation, the radial positioning blocks 42 at the two ends of the conductive spring plate 4 are only required to be respectively inserted into the corresponding clamping grooves 7, and the assembly and the disassembly are very convenient.
The clamping groove 7 on the stator assembly 6 is actually formed on the wall of the bearing mounting groove 61, and the clamping groove 7 on the bearing cover 5 is actually formed on the wall of the bearing chamber 51. In a specific assembly, one radial positioning block 42 of the conductive spring plate 4 is inserted into the clamping groove 7 on the stator assembly 6, then the first bearing 2 is installed into the bearing installation groove 61, then the other radial positioning block 42 of the conductive spring plate 4 is inserted into the clamping groove 7 on the bearing cover 5, then the second bearing 6 is installed in the bearing chamber 51, finally the bearing cover 5 is pressed into the slot, in the process, the conductive spring plate 4 is extruded, and the two protrusions 41 are in good contact with the outer walls of the two bearings.
The cooperation between radial locating piece 42 and draw-in groove 7 can avoid this conductive shell fragment 4 to play about the radial of pivot 11 in the use to guarantee that protruding 41 can contact with the bearing outer wall well.
As a specific implementation manner of this embodiment, the radial positioning block 42 in this embodiment includes a transverse plate 421 and a vertical plate 422, one end of the vertical plate 422 is connected to the middle portion of the transverse plate 421 to form a T-shaped structure, and the other end of the vertical plate 422 is vertically connected to the main body end portion of the conductive elastic sheet 4 to form an L-shaped structure, where the clamping groove 7 is a T-shaped groove adapted to the radial positioning block 42 with the T-shaped structure. At this time, the radial positioning function can be achieved by limiting the distance between the cross plate 421 and the wall of the T-shaped slot. Of course, the radial positioning block 42 in the present embodiment may be a V-shaped block, a major arc block, or other structures, as long as the radial positioning function is achieved in the present invention. It should be noted that the cross plate 421, the vertical plate 422, and the main body of the conductive spring 4 are integrally formed.
As a preferred implementation manner of this embodiment, the notch edge of the clamping groove 7 in this embodiment is further provided with a guiding bevel edge 71, so that the clamping groove 7 forms an open groove body, so as to facilitate the radial positioning block 42 to be inserted therein.
Of course, there are many ways to install the conductive spring 4 in this embodiment, for example, when the stator assembly 6 is injection molded, the conductive spring 4 is injection molded together with the stator assembly 6.
Example 5:
the embodiment provides an air conditioner, the plastic package motor is used and is intersected with a traditional air conditioner, and the plastic package motor of the air conditioner has better bearing galvanic corrosion prevention effect, so that the service life of the air conditioner is longer, and the noise is lower during use.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A plastic envelope motor, its characterized in that: the motor comprises a rotor assembly, a first bearing, a second bearing, a conductive spring piece, a bearing cover and a stator assembly with a bearing mounting groove;
The first bearing is arranged in the bearing mounting groove, the bearing cover covers the notch of the bearing mounting groove and is provided with a bearing chamber, the second bearing is arranged in the bearing chamber, and the outer rings of the first bearing and the second bearing are both contacted with the conductive elastic sheet;
The rotor assembly is arranged on one side of the bearing cover away from the stator assembly, and a rotating shaft of the rotor assembly penetrates through the inner rings of the first bearing and the second bearing;
The conductive elastic sheet is provided with at least two bulges, the first bearing outer ring is propped against one of the tops of the bulges, and the second bearing outer ring is propped against the other of the tops of the bulges.
2. A plastic package motor according to claim 1, wherein: the protrusions are formed by bending the main body of the conductive elastic sheet.
3. A plastic package motor according to claim 1, wherein: the width of the bulge gradually decreases from one side of the main body close to the conductive elastic sheet to one side of the main body far away from the conductive elastic sheet, and the included angles between the two sides, where the bulge is connected with the main body of the conductive elastic sheet, and the main body of the conductive elastic sheet are obtuse angles.
4. A plastic package motor according to claim 3, wherein: the cross section of the bulge is isosceles trapezoid or circular arc.
5. A plastic package motor according to claim 1, wherein: the two ends of the main body of the conductive elastic sheet are respectively provided with a radial positioning block, the bearing cover and the stator assembly are respectively provided with a clamping groove, and the two radial positioning blocks are respectively inserted into the two clamping grooves.
6. The plastic package motor of claim 5, wherein: the radial locating block comprises a transverse plate and a vertical plate, one end of the vertical plate is connected with the middle of the transverse plate to form a T-shaped structure, the other end of the vertical plate is vertically connected with the end part of the main body of the conductive elastic sheet, and the clamping groove is a T-shaped groove matched with the radial locating block.
7. The plastic package motor of claim 6, wherein: the notch of the clamping groove is provided with a guide bevel edge.
8. A plastic package motor according to any one of claims 1-7, wherein: the thickness of the conductive spring piece is 0.3-0.8mm.
9. The plastic package motor of claim 6, wherein: the transverse plate, the vertical plate and the conductive elastic sheet are integrally formed.
10. An air conditioner, characterized in that: a plastic package motor comprising any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910571864.1A CN110380557B (en) | 2019-06-28 | 2019-06-28 | Plastic package motor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910571864.1A CN110380557B (en) | 2019-06-28 | 2019-06-28 | Plastic package motor and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110380557A CN110380557A (en) | 2019-10-25 |
| CN110380557B true CN110380557B (en) | 2024-08-06 |
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ID=68251107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910571864.1A Active CN110380557B (en) | 2019-06-28 | 2019-06-28 | Plastic package motor and air conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN110380557B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221481B (en) * | 2021-11-18 | 2023-05-23 | 威睿电动汽车技术(宁波)有限公司 | Motor and vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048692A (en) * | 2015-08-25 | 2015-11-11 | 广东威灵电机制造有限公司 | Bearing electric corrosion prevention structure of plastic package motor |
| CN206894412U (en) * | 2017-07-14 | 2018-01-16 | 深圳市东方伺服数控技术有限公司 | A kind of external rotor permanent magnet servomotor |
| CN210093014U (en) * | 2019-06-28 | 2020-02-18 | 珠海凯邦电机制造有限公司 | Plastic package motor and air conditioner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467294B (en) * | 2014-11-14 | 2017-11-10 | 广东威灵电机制造有限公司 | Motor |
| CN204835727U (en) * | 2015-07-04 | 2015-12-02 | 中山大洋电机股份有限公司 | Plastic package motor |
| CN106026490B (en) * | 2016-05-17 | 2018-04-06 | 中山大洋电机股份有限公司 | With the external rotor electric machine of axially spaced-apart shock absorbing ring installation and using its fans load |
| CN205892442U (en) * | 2016-05-30 | 2017-01-18 | 宁波欣达电梯配件厂 | Encoder forward type hauler |
-
2019
- 2019-06-28 CN CN201910571864.1A patent/CN110380557B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048692A (en) * | 2015-08-25 | 2015-11-11 | 广东威灵电机制造有限公司 | Bearing electric corrosion prevention structure of plastic package motor |
| CN206894412U (en) * | 2017-07-14 | 2018-01-16 | 深圳市东方伺服数控技术有限公司 | A kind of external rotor permanent magnet servomotor |
| CN210093014U (en) * | 2019-06-28 | 2020-02-18 | 珠海凯邦电机制造有限公司 | Plastic package motor and air conditioner |
Also Published As
| Publication number | Publication date |
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| CN110380557A (en) | 2019-10-25 |
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