CN105914968A - Permanent magnet rotor forming method, permanent magnet rotor and electric machinery - Google Patents
Permanent magnet rotor forming method, permanent magnet rotor and electric machinery Download PDFInfo
- Publication number
- CN105914968A CN105914968A CN201610364971.3A CN201610364971A CN105914968A CN 105914968 A CN105914968 A CN 105914968A CN 201610364971 A CN201610364971 A CN 201610364971A CN 105914968 A CN105914968 A CN 105914968A
- Authority
- CN
- China
- Prior art keywords
- rotor
- armature spindle
- limiting section
- magnet
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
Abstract
The invention discloses a permanent magnet rotor forming method, a permanent magnet rotor and an electric machinery. The permanent magnet rotor forming method comprises the following steps: providing a rotor shaft; and using a permanent magnet powder material to form a magnet and a limiting part for limiting axial endplay of a bearing which sleeves the rotor shaft on the rotor shaft through injection molding. By using the permanent magnet powder material to form the magnet and the limiting part on the rotor shaft through injection molding, a snap ring structure is omitted, there is no need to arrange a snap ring slot on the rotor shaft, the production process is simplified, the production efficiency is improved, and the structure strength of the rotor is ensured.
Description
Technical field
The present invention relates to technical field of motors, more specifically, relate to a kind of p-m rotor forming method,
P-m rotor and comprise the motor of this p-m rotor.
Background technology
It is fixed that motor (English: Electric machinery, to be commonly called as " motor ") refers to according to electromagnetic induction
Rule realizes electric energy conversion or a kind of calutron of transmission.Motor is made up of stator, rotor and other adnexa.
The rotor of existing motor generally is p-m rotor, and p-m rotor can be that motor runs offer permanent magnetic field, when
When this rotor is applied on motor, can coordinate and bearing is installed.As it is shown in figure 1, this p-m rotor includes turning
Sub-axle 1 ' and the magnet 2 ' being fixed on the upper synchronous rotation of armature spindle 1 ', the two ends of armature spindle 1 ' lead to
Cross bearing 3 ' to be connected with the housing of motor, on armature spindle 1 ' and be positioned at bearing 3 ' near magnet 2 '
Side arranges the annular groove 4 ' of annular, is arranged with snap ring 5 ' in annular groove 4 '.The permanent magnetism of said structure
Prevent bearing 3 ' along the axis of armature spindle 1 ' although rotor can be coordinated by annular groove 4 ' and snap ring 5 '
Direction play, but owing to annular groove 4 ' processed on armature spindle 1 ' by needs and increases snap ring 5 ' so that
Production technology is more loaded down with trivial details, and production process is many, and then reduces speed of production, offers on armature spindle 1 ' simultaneously
Annular groove 4 ' also can reduce the structural strength of armature spindle 1 ', even if the structural strength of whole p-m rotor reduces.
Summary of the invention
It is an object of the present invention to provide the forming method of a kind of p-m rotor, it can simplify production
Operation, effectively prevent bearing play in the axial direction.
Further object is that a kind of p-m rotor of offer, its simple in construction, production process is few,
Production efficiency is high, and structural strength is high, can effectively prevent bearing play in the axial direction.
A further object of the present invention is to provide a kind of motor, and it uses the p-m rotor of integrated injection molding.
For reaching this purpose, the present invention by the following technical solutions:
On the one hand, it is provided that the forming method of a kind of p-m rotor, concretely comprise the following steps: provide armature spindle, in institute
State and on armature spindle, use permanent magnetism powder body material integrated injection molding magnet and sheathed for limiting on described armature spindle
The limiting section of bearing generation axial float.
On the other hand, also provide for a kind of p-m rotor, including armature spindle and magnet, also include for limiting
State the limiting section of bearing generation axial float sheathed on armature spindle, described magnet and described limiting section to use forever
Magnetic material integrated injection molding is on described armature spindle.
Yet another aspect, also provides for a kind of motor, including p-m rotor as above.
The invention have the benefit that the forming method of the p-m rotor that the present invention provides is by by magnet and limit
Position portion uses permanent magnet material integrated injection molding on armature spindle, eliminates Snap ring structure, simultaneously without at rotor
Offer annular groove on axle, decrease production process, improve production efficiency, also ensure that the knot of rotor simultaneously
Structure intensity.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing p-m rotor.
Fig. 2 is the structural representation of the p-m rotor described in the embodiment of the present invention.
In Fig. 1:
1 ', armature spindle；2 ', magnet；3 ', bearing；4 ', annular groove；5 ', snap ring.
In Fig. 2:
1, armature spindle；2, magnet；3, bearing；4, limiting section.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
The embodiment of the present invention provides the forming method of a kind of p-m rotor, comprises the steps: to provide armature spindle,
Armature spindle uses permanent magnetism powder body material integrated injection molding magnet and for limiting axle sheathed on armature spindle
Hold the limiting section that axial float occurs.
Magnet and limiting section use the permanent magnet material integrated injection molding concrete operation step on armature spindle to be: according to
The injection mold of the structure design specialized of p-m rotor, is then placed on armature spindle in this mould, injects forever
The magnetic powder of magnetic material, uses the modes such as compacting to form magnet and limiting section on armature spindle, and whole process uses
Mould has coordinated, it is not necessary to assembling magnet and limiting section, greatly reduces assembly process, improves life
Produce efficiency.Further, since do not process the structures such as annular groove on armature spindle so that armature spindle is the most whole
The intensity of p-m rotor is the highest.
The embodiment of the present invention additionally provides a kind of p-m rotor, as in figure 2 it is shown, p-m rotor includes armature spindle 1
With magnet 2, also include the limiting section that axial float occurs for limiting bearing 3 sheathed on described armature spindle 1
4, described magnet 2 and described limiting section 4 use permanent magnet material integrated injection molding on described armature spindle 1.
By using permanent magnet material integrated injection molding on armature spindle 1 magnet 2 and limiting section 4, eliminate card
Ring structure, offers annular groove without on armature spindle 1 simultaneously, decreases production process, improve production
Efficiency, also ensure that the structural strength of p-m rotor simultaneously.
Concrete, described limiting section 4 in annular, its projection on described armature spindle 2, and with described turn
Sub-axle 2 is coaxially disposed.
By limiting section 4 being set to projection cirque structure on armature spindle 1, on the one hand can increase
The intensity of limiting section 4, on the other hand can simplify mould structure, reduces manufacturing cost.
In the present embodiment, outside described limiting section 4 is away from one end and the described armature spindle 1 of described magnet 2
Being formed with limited step between perimeter surface, described limited step is parallel with the end face of described bearing 3.
When the size of limiting section 4 is bigger, its part may contact with the outer ring of bearing 3, although at permanent magnetism
In rotor rotation process, will not relatively rotate between the inner ring of limiting section 4 and bearing 3, but spacing
Portion 4 can relatively rotate with the outer ring of bearing 3, therefore by the limited step of limiting section 4 and bearing 3
End face is parallel, and the friction that can reduce between limited step and the outer ring of bearing 3 when p-m rotor rotates is shaken
Dynamic, and then reduce noise when p-m rotor rotates, increase the service life.
Preferably, described limited step is provided with sealing coat.
On the one hand sealing coat is set and can prevent bearing 3 or other zero when p-m rotor is installed with bearing 3
Part and limiting section 4 direct collision, extend the service life of limiting section 4, if another aspect limiting section 4
Size is bigger, it is also possible to prevent limiting section 4 from rubbing with the outer ring of bearing 3, reduces the generation of magnetic bits,
Reduce the abrasion of limiting section 4 further, extend the service life of limiting section 4.
More preferably, described sealing coat is fixing with described limited step is connected.
By being connected fixing to sealing coat and limited step, it is possible to prevent between sealing coat with limiting section to produce phase
To rotation, and then sealing coat would not rub limited step, effectively prevents the generation that magnetic is considered to be worth doing.
In other embodiments of the invention, described limiting section is two or more spacing preiection, two
Individual or plural spacing preiection is uniformly distributed along the circumference of described armature spindle 1.
By being set to by limiting section along the circumferential equally distributed spacing preiection of armature spindle 1, it is possible not only to prevent
Bearing 3 axial float, it is also possible to reduce the material consumption of limiting section, and then the weight of reduction rotor, save
Use material.
In other embodiments of the invention, described magnet 2 and described limiting section 4 surface are additionally provided with one layer
Injection protective layer.
By arranging this injection protective layer, magnet 2 and limiting section 4 can be sealed on armature spindle, effectively
Prevent magnet 2 and limiting section 4 from after colliding with other magnetic conductor, producing magnetic bits, extend making of p-m rotor
Use the life-span.
In other embodiments of the invention, on described armature spindle 1 with described magnet 2 and described limiting section 4
The position of contact is formed with roughening region by roughening treatment.
By arranging roughening region, magnet 2 and limiting section 4 can be made when injection and the combination of armature spindle 1
Tightr.
Roughening region is the rough region that armature spindle 1 is formed in its appointment region, surface by roughening treatment,
In magnet 2 and limiting section 4 injection molding process, can pass through this rough region enhancing magnet 2, limiting section 4 with
The bonding strength of armature spindle 1.
Embodiments of the invention additionally provide a kind of motor, including p-m rotor as above.P-m rotor
Structure can refer to Fig. 2 and above-described embodiment, here is omitted.
The know-why of the present invention is described above in association with specific embodiment.These describe and are intended merely to explain this
The principle of invention, and limiting the scope of the invention can not be construed to by any way.Based on herein
Explaining, those skilled in the art need not pay performing creative labour can associate other tool of the present invention
Body embodiment, within these modes fall within protection scope of the present invention.
Claims (10)
1. the forming method of a p-m rotor, it is characterised in that provide armature spindle, on described armature spindle
Use permanent magnetism powder body material integrated injection molding magnet and occur for limiting bearing sheathed on described armature spindle
The limiting section of axial float.
2. a p-m rotor, including armature spindle and magnet, it is characterised in that also include for limiting described
The limiting section of bearing generation axial float sheathed on armature spindle, described magnet and described limiting section use permanent magnetism
Material integrated injection molding is on described armature spindle.
P-m rotor the most according to claim 2, it is characterised in that described limiting section is annular,
Its projection is on described armature spindle, and is coaxially disposed with described armature spindle.
P-m rotor the most according to claim 3, it is characterised in that described limiting section is away from described magnetic
Being formed with limited step between one end and the outer surface of described armature spindle of body, described limited step is with described
The end face of bearing is parallel.
P-m rotor the most according to claim 4, it is characterised in that be provided with on described limited step
Sealing coat.
P-m rotor the most according to claim 5, it is characterised in that described sealing coat is spacing with described
Step is fixing to be connected.
P-m rotor the most according to claim 2, it is characterised in that described limiting section is two or two
Individual above spacing preiection, two or more described spacing preiections are uniform along the circumference of described armature spindle
Distribution.
8. according to the p-m rotor described in any one of claim 2 to 7, it is characterised in that described magnet and
Described limiting section surface is additionally provided with one layer of injection protective layer.
9. according to the p-m rotor described in any one of claim 2 to 7, it is characterised in that described armature spindle
The upper position contacted with described magnet and described limiting section is formed with roughening region by roughening treatment.
10. a motor, it is characterised in that include that the permanent magnetism as described in any one of claim 2 to 9 turns
Son.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364971.3A CN105914968A (en) | 2016-05-26 | 2016-05-26 | Permanent magnet rotor forming method, permanent magnet rotor and electric machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610364971.3A CN105914968A (en) | 2016-05-26 | 2016-05-26 | Permanent magnet rotor forming method, permanent magnet rotor and electric machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105914968A true CN105914968A (en) | 2016-08-31 |
Family
ID=56742538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610364971.3A Pending CN105914968A (en) | 2016-05-26 | 2016-05-26 | Permanent magnet rotor forming method, permanent magnet rotor and electric machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105914968A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787329A (en) * | 2017-01-16 | 2017-05-31 | 江苏汇创机电科技股份有限公司 | A kind of motor shaft and the plastic magnetic rotor using this axle |
| CN107707052A (en) * | 2017-10-11 | 2018-02-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
| CN110149034A (en) * | 2019-05-07 | 2019-08-20 | 李明 | A kind of preparation method of permanent magnet rotor component |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162875A (en) * | 1997-08-26 | 1999-03-05 | Nikkiso Co Ltd | Canned motor pump |
| CN101588098A (en) * | 2008-05-23 | 2009-11-25 | 乐金电子(天津)电器有限公司 | Inner rotor type motor |
| CN102340198A (en) * | 2011-09-13 | 2012-02-01 | 蔡念威 | Motor rotor and manufacturing method thereof |
| CN102437670A (en) * | 2011-12-16 | 2012-05-02 | 深圳航天微电机有限公司 | Brushless motor used for roller drive of drum type washing machine and drum type washing machine |
| CN204497871U (en) * | 2013-11-27 | 2015-07-22 | 三菱电机株式会社 | The rotor of motor, motor and air conditioner |
| CN206077174U (en) * | 2016-05-26 | 2017-04-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of p-m rotor and motor |
-
2016
- 2016-05-26 CN CN201610364971.3A patent/CN105914968A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162875A (en) * | 1997-08-26 | 1999-03-05 | Nikkiso Co Ltd | Canned motor pump |
| CN101588098A (en) * | 2008-05-23 | 2009-11-25 | 乐金电子(天津)电器有限公司 | Inner rotor type motor |
| CN102340198A (en) * | 2011-09-13 | 2012-02-01 | 蔡念威 | Motor rotor and manufacturing method thereof |
| CN102437670A (en) * | 2011-12-16 | 2012-05-02 | 深圳航天微电机有限公司 | Brushless motor used for roller drive of drum type washing machine and drum type washing machine |
| CN204497871U (en) * | 2013-11-27 | 2015-07-22 | 三菱电机株式会社 | The rotor of motor, motor and air conditioner |
| CN206077174U (en) * | 2016-05-26 | 2017-04-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of p-m rotor and motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787329A (en) * | 2017-01-16 | 2017-05-31 | 江苏汇创机电科技股份有限公司 | A kind of motor shaft and the plastic magnetic rotor using this axle |
| CN107707052A (en) * | 2017-10-11 | 2018-02-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
| CN110149034A (en) * | 2019-05-07 | 2019-08-20 | 李明 | A kind of preparation method of permanent magnet rotor component |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160831 |
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| RJ01 | Rejection of invention patent application after publication |