IT201800006878A1 - SYSTEM FOR FIXING PERMANENT MAGNETS ON ROTORS FOR BRUSHLESS MOTORS - Google Patents
SYSTEM FOR FIXING PERMANENT MAGNETS ON ROTORS FOR BRUSHLESS MOTORS Download PDFInfo
- Publication number
- IT201800006878A1 IT201800006878A1 IT102018000006878A IT201800006878A IT201800006878A1 IT 201800006878 A1 IT201800006878 A1 IT 201800006878A1 IT 102018000006878 A IT102018000006878 A IT 102018000006878A IT 201800006878 A IT201800006878 A IT 201800006878A IT 201800006878 A1 IT201800006878 A1 IT 201800006878A1
- Authority
- IT
- Italy
- Prior art keywords
- rotor
- rotors
- brushless motors
- permanent magnets
- fixing permanent
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Brushless Motors (AREA)
Description
TITOLO INVENZIONE INDUSTRIALE: Sistema di fissaggio magneti permanenti su rotori per motori brushless INDUSTRIAL INVENTION TITLE: Permanent magnet fixing system on rotors for brushless motors
DESCRIZIONE DESCRIPTION
La presente domanda di brevetto per invenzione industriale ha per oggetto un sistema di fissaggio di magneti permanenti su rotori di motori brushless. The present patent application for industrial invention relates to a system for fixing permanent magnets on rotors of brushless motors.
Attualmente i motori brushless a magneti permanenti possono essere suddivisi in due tipologie: Currently, permanent magnet brushless motors can be divided into two types:
_ 1 - a rotore esterno e statore interno _ 1 - with external rotor and internal stator
2- a rotore interno e statore esterno 2- with internal rotor and external stator
Nei processi attuali di produzione il fissaggio meccanico dei magneti sul pacco lamellare del rotore viene eseguito tramite incollaggio o applicazione di molle o perni di recupero gioco inseriti a incastro. In current production processes, the mechanical fixing of the magnets on the rotor disc pack is performed by gluing or applying interlocking springs or slack pins.
La presente invenzione è riferita alla tipologia a rotore interno. The present invention refers to the internal rotor type.
Il rotore interno presenta delle sedi per l'alloggiamento dei magneti che possono essere realizzate sulla circonferenza esterna del pacco lamellare di rotore o internamente in apposite asole di sezione rettangolare a forma di parallelepipedo. The internal rotor has seats for housing the magnets which can be made on the external circumference of the rotor lamellar pack or internally in special rectangular section slots in the shape of a parallelepiped.
in entrambi i casi, durante la fase d'inserimento dei magneti nelle sedi, si riscontrano inevitabili problemi di accoppiamento a causa di eccessivo gioco o eccessiva interferenza che creano problematiche di assemblaggio e di affidabilità durante il normale funzionamento della macchina. in both cases, during the insertion phase of the magnets in the seats, coupling problems are inevitably encountered due to excessive play or excessive interference which create assembly and reliability problems during normal operation of the machine.
Scopo del trovato è quello di ovviare agli inconveniente sopra descritti con un sistema di tranciatura asola di forma perfezionata avente una cuspide d'interferenza sul magnete, un braccio pieghevole per il recupero del gioco e una sezione di aria vuota per consentire al Il vantaggio del sistema secondo il trovato rispetto a quelli finora adottati consiste nel riuscire ad ottenere un fissaggio forzato tra sede rotore e magnete permanente senza necessità di eseguire lavorazioni d'incollaggio o fissaggio meccanico con molle o applicazione di perni ad incastro. The purpose of the invention is to obviate the drawbacks described above with an improved shaped slot blanking system having an interference cusp on the magnet, a folding arm for the recovery of the play and an empty air section to allow the advantage of the system. according to the invention with respect to those adopted up to now, it consists in being able to obtain a forced fastening between the rotor seat and the permanent magnet without the need to perform gluing or mechanical fastening operations with springs or the application of interlocking pins.
Per maggiore chiarezza esplicativa il sistema di fissaggio secondo il trovato è evidenziato nelle figure allegate che hanno valore solo illustrativo e non limitativo dove: For greater clarity of explanation, the fastening system according to the invention is highlighted in the attached figures which are only illustrative and not limitative, where:
la figura 1 è Lina vista della forma di fissaggio del lamierino rotore per magneti posti sulla circonferenza esterna. Figure 1 is a view of the form of attachment of the rotor lamination for magnets placed on the outer circumference.
la figura 2 è una vista dell'assemblaggio magneti sulla circonferenza esterna del pacco rotorico. Figure 2 is a view of the magnet assembly on the outer circumference of the rotor pack.
la figura 3 è una vista della forma del lamierino rotore per magneti posti sulle asole interne del pacco rotorico. Figure 3 is a view of the shape of the rotor lamination for magnets placed on the internal slots of the rotor pack.
la figura 4 è una vista del magnete dopo fissaggio ad interferenza sulle asole interne del pacco rotorico. Figure 4 is a view of the magnet after interference fixing on the internal slots of the rotor pack.
Con particolare riferimento alle figure 1 e 3 viene mostrato il sistema di fissaggio secondo il trovato, ovvero di una forma perfezionata costituita da una cuspide per interferenza (1), un braccio per recupero giochi (2) ed una sezione di area vuota (3) che permette la flessione del braccio (2). With particular reference to Figures 1 and 3, the fastening system according to the invention is shown, i.e. of an improved shape consisting of an interference cusp (1), an arm for recovering play (2) and a section of empty area (3) which allows the flexion of the arm (2).
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102018000006878A IT201800006878A1 (en) | 2018-07-03 | 2018-07-03 | SYSTEM FOR FIXING PERMANENT MAGNETS ON ROTORS FOR BRUSHLESS MOTORS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102018000006878A IT201800006878A1 (en) | 2018-07-03 | 2018-07-03 | SYSTEM FOR FIXING PERMANENT MAGNETS ON ROTORS FOR BRUSHLESS MOTORS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT201800006878A1 true IT201800006878A1 (en) | 2020-01-03 |
Family
ID=63834378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT102018000006878A IT201800006878A1 (en) | 2018-07-03 | 2018-07-03 | SYSTEM FOR FIXING PERMANENT MAGNETS ON ROTORS FOR BRUSHLESS MOTORS |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT201800006878A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09233748A (en) * | 1996-02-23 | 1997-09-05 | Fuji Electric Co Ltd | Fixing equipment of cylindrical core of rotating electric machine and its outer cylindrical body |
| DE102015216051A1 (en) * | 2015-08-21 | 2017-02-23 | Continental Automotive Gmbh | Rotor for a permanent-magnet electric machine |
-
2018
- 2018-07-03 IT IT102018000006878A patent/IT201800006878A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09233748A (en) * | 1996-02-23 | 1997-09-05 | Fuji Electric Co Ltd | Fixing equipment of cylindrical core of rotating electric machine and its outer cylindrical body |
| DE102015216051A1 (en) * | 2015-08-21 | 2017-02-23 | Continental Automotive Gmbh | Rotor for a permanent-magnet electric machine |
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