CN202260716U - Permanent magnet rotor of water pump - Google Patents
Permanent magnet rotor of water pump Download PDFInfo
- Publication number
- CN202260716U CN202260716U CN2011203200711U CN201120320071U CN202260716U CN 202260716 U CN202260716 U CN 202260716U CN 2011203200711 U CN2011203200711 U CN 2011203200711U CN 201120320071 U CN201120320071 U CN 201120320071U CN 202260716 U CN202260716 U CN 202260716U
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- China
- Prior art keywords
- bearing
- water pump
- permanent magnet
- clutch shaft
- armature spindle
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Abstract
The utility model discloses a permanent magnet rotor of a water pump. The permanent magnet rotor comprises a rotor shaft, two permanent magnets and a bearing, wherein the two permanent magnets are fixed into a whole in an injection molding manner, a plastic protection layer is formed outside each permanent magnet, the bearing is fixed with the permanent magnets into a whole in the injection molding manner, and plastic sheltering structures are formed at two outer ends of the bearing. Preferentially, the bearing is of a spilt structure and is formed by splicing a firs bearing and a second bearing with each other, the inner holes of the first bearing and the second bearing are both of a step shape, the first bearing and the second bearing are respectively in rotation fit with the rotor shaft through the opposite inner holes at far ends, and the inner diameters of the inner holes at adjoining parts of the first bearing and the second bearing are more than the outer diameter of the rotor shaft at a corresponding position. The permanent magnet rotor disclosed by the utility model has the beneficial effects that the bearings never fall off, the starting speed is high, the energy consumption is low, the manufacturing cost is low and the service life is long.
Description
Technical field
The utility model relates to a kind of water pump rotor, particularly a kind of water pump PM rotor.
Background technology
The water pump PM rotor comprises armature spindle and permanent magnet, through the injection moulding mode the two fixedly is integrally formed usually.But, particularly when permanent magnet magnetizes after, produce magnetic and consider to be worth doing owing to magneticaction is easy to collide with other magnetic conductor such as iron class workpiece because there is frangible characteristic in permanent magnet.Because these magnetic bits itself have magnetic, therefore, still can be adsorbed on the permanent magnet, in case this PM rotor is installed on the product, just stuck the and phenomenon of damage water pump of water pump rotor and stator appears probably in the water pump use.For this reason; The applicant had once proposed a kind of " water pump PM rotor " patent application that is formed with protective layer in the permanent magnet outside on February 21st, 2006; Even can not occur after splitting damaging the phenomenon of water pump because of the magnetic bits drop to guarantee to be broken up at permanent magnet yet; This application is granted patent on February 21st, 2007, and the rotor of this structure generally is used on the water pump product.Yet because armature spindle and permanent magnet fixedly are integrally formed, the moment of inertia of PM rotor is big, and the starting mode of pump electric current is big, and energy consumption is high, response speed is slow; And armature spindle need be supported on the water pump cover through sliding bearing, and assembly process is complicated.At present; The water pump PM rotor that a kind of permanent magnet and armature spindle are the branch body structure has appearred in market, and permanent magnet is sleeved on the armature spindle, through sliding bearing like this; During pump working; Have only permanent magnet to rotate with water pump vane, armature spindle is fixedly mounted on the water pump cover, thereby has overcome the defective of aforementioned integrative-structure.But the sliding bearing of PM rotor is the parts of plastics that the parcel permanent magnet is installed in the prior art, because injection moulding and bearing material thermal coefficient of expansion differ bigger, therefore, in use, exists bearing to come off easily and causes the water pump fault.
Summary of the invention
The purpose of the utility model is exactly the deficiency to prior art, and a kind of permanent magnet and armature spindle water pump PM rotor in relative rotation is provided, and its bearing does not come off, and toggle speed is fast, energy consumption is low.
For realizing above-mentioned purpose, the utility model adopts following technical scheme.
A kind of water pump PM rotor; Comprise armature spindle, two permanent magnets, bearing, two permanent magnets are fixed into one through the injection moulding mode, and the permanent magnet outside is formed with plastic protective layer; Said bearing also is fixed into one through injection moulding mode and permanent magnet, and bearing two outer ends are formed with the plastics barrier structure.
Adopt the utility model of such scheme,, in the assembling of water pump product, saved the bearing assembling procedure, therefore, reduced the assembly work amount, thereby improved assembly work efficient because bearing and permanent magnet have formed one through the injection moulding mode; Simultaneously, because the bearing two ends are formed with barrier structure, no matter this plastics barrier structure is baffle ring shape or retaining ligule, can stop all that in the water pump use bearing comes off; The plastics barrier structure forms partial occlusion to bearing face or blocks entirely, mainly confirms according to the physical dimension size of the plastics baffle ring thickness that forms, water pump PM rotor; In addition, because bearing and rotor bearing divide body structure, so toggle speed is fast, energy consumption is low.
Bearing in the aforementioned techniques scheme can be an overall structure, also can be the branch body structure, when adopting overall structure, and PM rotor good rigidly, long service life; At this moment, the endoporus of bearing is arranged to the stepped hole of mid diameter greater than armature spindle corresponding site diameter, and bearing is rotatably assorted through the endoporus and the armature spindle formation at two ends; When adopting the branch body structure, bearing is made up of the clutch shaft bearing and second bearing, and bearing is easily manufactured, the reduction manufacturing cost.This situation adopts two kinds of schemes; The first clutch shaft bearing and second bearing shaft are to separated by a distance; Injection moulding section between the clutch shaft bearing and second bearing is formed with the injecting hole greater than armature spindle corresponding site diameter; The clutch shaft bearing and second bearing are rotatably assorted through self endoporus and armature spindle formation respectively, can reduce bearing material consumption, reduce manufacturing cost; It two is that the clutch shaft bearing and second bearing splice each other; It is step-like that the endoporus of the clutch shaft bearing and second bearing all is; The clutch shaft bearing and second bearing endoporus through relative far-end and armature spindle respectively form and are rotatably assorted, be positioned at the clutch shaft bearing and second bearing in abutting connection with the diameter of bore at position greater than corresponding site armature spindle external diameter.The integral rigidity of PM rotor is better to technical scheme separated by a distance than the clutch shaft bearing and second bearing shaft.
In the technique scheme, because the particularity of product environment for use, bearing material generally adopts stainless steel or pottery to make, when adopting ceramic material, and the useful life that can effectively improve PM rotor; When bearing outside surface is provided with projection and/or depression, when injection moulding, injected plastics material is filled depression or is coated the protruding part, thereby improves the transfer torque of PM rotor, prolongs rotor useful life.Can be only to establish projection or depression at bearing outside surface, also can be both to be provided with projection at bearing outside surface, establishes the situation of depression again.Said projection is a kind of in boss, the connectivity fin or the combination of the two; Said depression is pit, connectivity groove, cut a kind of or three's in the flat horizontal surface combination.
The utility model beneficial effect compared with prior art is that bearing does not come off, toggle speed is fast, energy consumption is low; And low cost of manufacture, long service life.
The utility model beneficial effect compared with prior art is that bearing does not come off, toggle speed is fast, energy consumption is low; And low cost of manufacture, long service life.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation that the clutch shaft bearing surface of the utility model embodiment 1 is provided with depression.
Fig. 3 is the structural representation of the utility model embodiment 2.
Fig. 4 is the clutch shaft bearing structural representation of the utility model embodiment 2.
Fig. 5 is the structural representation that the clutch shaft bearing surface of the utility model embodiment 2 is provided with the situation of projection.
Fig. 6 is the structural representation of the utility model embodiment 3.
Fig. 7 is the structural representation that the utility model bearing surface is provided with depression and projection.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, but therefore the utility model is not limited among the described scope of embodiments.
Embodiment 1Referring to Fig. 1; A kind of water pump PM rotor comprises that armature spindle 1, two permanent magnets 2,3, two permanent magnets 2 of bearing are fixed into one through the injection moulding mode; Permanent magnet 2 outsides are formed with plastic protective layer; Said bearing 3 also is fixed into one through injection moulding mode and permanent magnet 2, and 3 liang of outer ends of bearing are formed with ring-shaped plastics barrier structure 4, and barrier structure 4 forms bearing 3 outer faces entirely and blocks.
Said bearing 3 is the branch body structure, and bearing 3 is made up of the clutch shaft bearing 31 and second bearing 32.
Be formed with injection moulding section 5 between the said clutch shaft bearing 31 and second bearing 32, injection moulding section 5 is formed with the injecting hole 51 of diameter greater than armature spindle 1, and the clutch shaft bearing 31 and second bearing 32 all form through respective interior bores and armature spindle 1 and be rotatably assorted.
Referring to Fig. 2, the said clutch shaft bearing 31 and second bearing 32 are processed by ceramic material, are equipped with depression 3d on clutch shaft bearing 31 and second bearing, 32 outer surfaces, and depression 3d is the combination that connectivity is cut flat horizontal surface and groove.
When permanent magnet 2 and bearing 3 are integrally formed through the injection moulding mode, with blade 6 integrated injection moldings of water pump PM rotor.
Embodiment 2Referring to; 3, Fig. 4; The said clutch shaft bearing 31 and second bearing 32 are spliced to form bearing 3 each other; It is step-like that the endoporus of the clutch shaft bearing 31 and second bearing 32 all is, and the clutch shaft bearing 31 and second bearing 32 the bearing mating holes through relative far-end 33 respectively form with armature spindle 1 and be rotatably assorted, and is positioned at the clutch shaft bearing 31 and second bearing 32 and lets emptying aperture 34 diameters greater than corresponding site armature spindle 1 external diameter in abutting connection with the position.The ring-shaped plastics barrier structure 4 that clutch shaft bearing 31 and second bearing, 32 outer ends form forms partial occlusion with bearing 3 outer faces.
All the other structures of present embodiment are identical with embodiment 1, repeat no more at this.
Referring to Fig. 5, in the present embodiment, clutch shaft bearing 31 and second bearing, 32 outer surfaces also can be provided with the projection 3c of penetrability fin.
Embodiment 3Referring to; 5, said bearing 3 is overall structure, and bearing 3 endoporus are made up of first endoporus 3a that is positioned at two ends and the second endoporus 3b that is positioned at the middle part; Bearing 3 forms through the first endoporus 3a and armature spindle 1 and is rotatably assorted, and the diameter of the second endoporus 3b is greater than armature spindle 1 corresponding site external diameter.3 liang of outer ends of bearing are formed with ring-shaped plastics barrier structure 4 and bearing 3 outer faces are formed entirely block.
Referring to Fig. 6, said bearing 3 outer surfaces are provided with projection 3c and depression 3d, and depression 3d is that connectivity is cut flat horizontal surface, and projection 3c is the penetrability fin.
All the other structures of present embodiment are identical with embodiment 1, repeat no more at this.
Though more than combined accompanying drawing to describe the execution mode of the utility model; But those of ordinary skill in the art also can recognize in the scope to accompanying claims and make various variations or modification, and it is within the scope of the utility model and intention that these modifications and variation are interpreted as.
Claims (6)
1. water pump PM rotor; Comprise armature spindle (1), two permanent magnets (2), bearing (3); Two permanent magnets (2) are fixed into one through the injection moulding mode; Permanent magnet (2) outside is formed with plastic protective layer, it is characterized in that: said bearing (3) also is fixed into one through injection moulding mode and permanent magnet (2), and bearing (3) two outer ends are formed with plastics barrier structure (4).
2. water pump PM rotor according to claim 1 is characterized in that: said bearing (3) is the branch body structure, and bearing (3) is made up of clutch shaft bearing (31) and second bearing (32).
3. water pump PM rotor according to claim 2; It is characterized in that: be formed with injection moulding section (5) between said clutch shaft bearing (31) and second bearing (32); Injection moulding section (5) is formed with the injecting hole (51) of diameter greater than armature spindle (1), and clutch shaft bearing (31) and second bearing (32) all form through respective interior bores and armature spindle (1) and be rotatably assorted.
4. water pump PM rotor according to claim 2; It is characterized in that: said clutch shaft bearing (31) and second bearing (32) are spliced to form bearing (3) each other; The endoporus of clutch shaft bearing (31) and second bearing (32) all is step-like; Clutch shaft bearing (31) and second bearing (32) the bearing mating holes (33) through relative far-end respectively form with armature spindle (1) and are rotatably assorted, and are positioned at clutch shaft bearing (31) and second bearing (32) and let emptying aperture (34) diameter greater than corresponding site armature spindle (1) external diameter in abutting connection with the position.
5. water pump PM rotor according to claim 1; It is characterized in that: said bearing (3) is overall structure; Bearing (3) endoporus by first endoporus (3a) that is positioned at two ends and be positioned at the middle part second endoporus (3b) form; Bearing (3) forms with armature spindle (1) through first endoporus (3a) and is rotatably assorted, and the diameter of second endoporus (3b) is greater than armature spindle (1) corresponding site external diameter.
6. according to the described water pump PM rotor of any claim in the claim 1～5, it is characterized in that: said bearing (3) is processed by ceramic material, and bearing (3) outer surface is provided with projection (3c) and/or depression (3d).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203200711U CN202260716U (en) | 2011-08-30 | 2011-08-30 | Permanent magnet rotor of water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203200711U CN202260716U (en) | 2011-08-30 | 2011-08-30 | Permanent magnet rotor of water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202260716U true CN202260716U (en) | 2012-05-30 |
Family
ID=46121899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203200711U Expired - Fee Related CN202260716U (en) | 2011-08-30 | 2011-08-30 | Permanent magnet rotor of water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202260716U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591919A (en) * | 2017-08-30 | 2018-01-16 | 广东威灵电机制造有限公司 | Rotor core and rotor |
| CN108288882A (en) * | 2018-02-05 | 2018-07-17 | 中山市海鲸电器科技有限公司 | Neodymium iron boron rotor and its manufacturing process |
| CN110486321A (en) * | 2019-08-26 | 2019-11-22 | 佛山市力诚智能科技有限公司 | A kind of water pump rotor forming method |
-
2011
- 2011-08-30 CN CN2011203200711U patent/CN202260716U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591919A (en) * | 2017-08-30 | 2018-01-16 | 广东威灵电机制造有限公司 | Rotor core and rotor |
| CN107591919B (en) * | 2017-08-30 | 2020-11-27 | 美的威灵电机技术（上海）有限公司 | Rotor core and rotor |
| CN108288882A (en) * | 2018-02-05 | 2018-07-17 | 中山市海鲸电器科技有限公司 | Neodymium iron boron rotor and its manufacturing process |
| CN110486321A (en) * | 2019-08-26 | 2019-11-22 | 佛山市力诚智能科技有限公司 | A kind of water pump rotor forming method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20180830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |