• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Rotor for brushless external rotor electric motor, formed by a housing in which an axis (4) is incorporated for mounting on the electric motor of application and magnets (2) to actuate, and which is constituted by a aluminum casing (6), made in one piece, which determines a cylindrical configuration body closed at one end where it centrally has a conformation (7) provided with an axial hole (8) in which the assembly of the shaft (4), while on the outside the cylindrical body itself determines a conformation (9) for fastening an element that has to rotate with the rotor. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2589168A1
    申请号:ES201530610
    申请日:2015-05-05
    公开日:2016-11-10
    发明作者:Màrius Gamissans Bou
    申请人:Soler and Palau Research SL；
    IPC主号:
    专利说明:

    ROTOR FOR OUTDOOR ROTOR ELECTRIC MOTOR WITHOUT BRUSHES 5 Technical sector
    The present invention is related to the formation of brushless outer rotor electric motors, proposing a rotor for said type of motors, developed with a structural embodiment whose characteristics make it advantageous with respect to the rotors
    10 which are currently used in such engines. State of the art
    Brushless outer rotor electric motors offer features
    15 constructive, functional and performance, which make this type of motor particularly preferred with respect to electric motors with brushes, which have been discarded in many applications.
    Due to the functional system of said electric motors, its rotor requires a housing of
    20 magnetic material to fix on it the magnets of the operating system, whereby in those motors the rotor is generally made with a housing formed by drawing from an iron plate, thus fulfilling the necessary requirement for said motors.
    25 That conventional housing of the rotor motors of external rotor without brushes, has to be complemented with a means of fastening a shaft for mounting the rotor on the application motor, which is solved by incorporating an accessory sleeve in a hole axial of the housing, where the bushing has to be fixed so that it is integral with the housing, which requires operations that increase the cost of
    30 rotor, in addition to determining a possible loosening and mismatch of the bushing assembly causing a malfunction of the application motor.
    On the other hand, for rotor applications, such as the drive of propellers or fan impellers, a flange must be incorporated on the rotor housing.
    35 mooring of the element to be operated, which in turn requires complementary operations that also increase the cost of the rotor.


    Therefore, it is of interest the development of a rotor for the aforementioned electric motors of external rotor without brushes, which allows to comply in an appropriate manner with the specifications required by the application in this type of motors, while avoiding the problems of higher cost of the manufacturing presented by conventional rotors of said application. Object of the invention
    According to the invention, a rotor is proposed for brushless outer rotor electric motors, made with construction characteristics that make it advantageous with respect to conventional rotors of that application.
    This rotor object of the invention consists of a structural carcass formed of molded aluminum, said carcass determining a cylindrical shape closed by one end, centrally at said closed end having a conformation provided with an axial hole in which the assembly of the shaft of the shaft is established. rotor; while on the outside the peripheral wall of the body of the housing determines a conformation for the mooring of an element that has to rotate with the rotor, such as a propeller of an axial fan or an impeller of a radial fan; the inner part of said peripheral wall of the body of the housing being a cylindrical package of annular plates or a cylindrical body of sheet metal, of magnetic material, on which the magnets of the functional system of the rotor are arranged.
    A rotor is thus obtained that adequately integrates the magnets necessary for operation in a brushless outer rotor motor, having a light and corrosion resistant material housing, such as aluminum, which housing determines integrated in one piece construction, a conformation for the assembly of the rotor shaft and a conformation for the fastening of any element that has to rotate with the rotor.
    With this, the rotor results from a simpler and cheaper manufacturing than conventional rotors of the same application, since its housing includes all necessary structural parts integrated in one piece, without having to incorporate accessory elements into the body of the housing after forming it, which reduces manufacturing operations and also prevents possible clearances and decoupling of joints of independent parts associated with the body of the housing.


    Therefore, said rotor object of the invention results in characteristics that give it its own life and preferential character with respect to the rotors with iron casing that have been conventionally used in electric motors of external rotor without brushes. Description of the figures
    Figure 1 shows a diametral section of a conventional rotor with an iron housing for a brushless outer rotor electric motor.
    10 Figure 2 shows a diametral section of an example of rotor for brushless outer rotor electric motor, according to the invention, in an embodiment intended to incorporate an axial type element, such as a fan propeller.
    Fig. 3 is a diametral section of an example of rotor for brushless outer rotor electric motor, according to the invention, in an embodiment intended to incorporate a radial type element, such as a fan impeller.
    Figure 4 is a diametral section of a rotor like that of Figure 2, incorporating in the
    20 inside a cylindrical sheet body, instead of a pack of annular sheets, on which the rotor magnets are held. Detailed description of the invention
    The object of the invention is a rotor for brushless outer rotor electric motors, which has been developed according to an embodiment that improves the structural characteristics of the rotors that are conventionally used in said application, as shown in Figure 1, It has a housing (1) formed by drawing an iron sheet, on which are arranged inside magnets (2) which are what determine the
    30 rotor operation in the application motor.
    In said type of rotor, the housing (1) formed of an iron plate requires the accessory incorporation of a bushing (3) for fastening a shaft (4) for mounting the rotor in the application motor, as well as the incorporation of a flange (5) in the outer part 35 for securing the element to be rotated with the rotor, such as an axial fan propeller or a radial fan impeller, requiring the


    incorporation of the aforementioned bushing (3) and the aforementioned flange (5), complementary assembly and fixing operations that make the rotor more expensive and make it susceptible to gaps and mismatches that may cause a malfunction of the engine in which it is arranged the rotor
    The rotor object of the invention (figures 2, 3 and 4), consists of an aluminum housing (6), which can be made by molding, which is formed by a cylindrical configuration body closed at one end, having centrally at the closed end a conformation (7) provided with an axial hole (8), where the shaft assembly is established
    10 (4) of the rotor, without it being necessary to incorporate an accessory sleeve for said assembly.
    In addition, the body of the housing itself (6) determines on the outside a conformation
    (9) for securing the element that has to rotate with the rotor; said conformation (9) may be provided, for example, as in the embodiment of figures 2 and 4, for
    15 fastening the blades of an axial fan propeller, according to a configuration in the form of lugs equal to that of the blades to be fastened, to hold a blade in each lug; or it may be formed as in the embodiment of Figure 3, according to an annular wing-shaped configuration, for fastening an element such as a radial fan impeller; without these embodiments being limiting.
    On the other hand, the cylindrical wall of the body of the housing determines on the inside a housing (10), where a cylindrical packaging (11) of magnetic plates is arranged, as in the examples of Figures 2 and 3, or a cylindrical body (12) of magnetic sheet, as in the example of figure 4, on which the magnets (2) are fixed which
    25 constitute the functional assembly to operatively rotate the rotor in the application motor.
    This results in a rotor that has the functional advantages of conventional rotors of brushless outer rotor motors, and also has the
    30 construction advantages of an aluminum housing (6), which determines in its same construction piece a conformation (7) for the assembly of the rotor shaft (4) and a conformation (9) for the fastening of the element that has to rotate with the rotor, without having to incorporate accessory elements for these functions.

    权利要求:
    Claims (3)
    [1]
    1.-Rotor for brushless outer rotor electric motor, formed by a housing in thewhich incorporates a shaft (4) for mounting on the electric application motor and about5 magnets (2) to actuate the operation, characterized in that it is constituted by aAluminum housing (6), made in one piece, which determines a body ofcylindrical configuration closed at one end where it centrally has aconformation (7) provided with an axial hole (8) in which the shaft assembly is established(4), while on the outside the cylindrical body itself determines a conformation
    10 (9) for holding an element that has to rotate with the rotor.
    [2]
    2.-Rotor for brushless outer rotor electric motor, according to the first claim, characterized in that the conformation (9) has a configuration in the form of lugs, to hold on each lug a blade of an axial fan propeller.
    15-Rotor for brushless outer rotor electric motor, according to the first claim, characterized in that the conformation (9) has a ring-shaped configuration, to hold on it an element such as a radial fan impeller .
    20 4.-Rotor for brushless outer rotor electric motor, according to the first claim, characterized in that the cylindrical configuration body of the housing (6) determines in the inner part a housing (10), wherein a cylindrical packaging (11) of magnetic plates on which the magnets (2) actuators of the
    25 rotor operation.
    [5]
    5.-Rotor for brushless outer rotor electric motor, according to the first claim, characterized in that the cylindrical configuration body of the housing (6) determines in the inner part a housing (10), where a body is arranged cylindrical
    30 (12) of magnetic sheet on which the magnets (2) actuators of the rotor operation are fastened.



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    同族专利:
    公开号 | 公开日
    WO2016177919A1|2016-11-10|
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    CN107534337A|2018-01-02|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5363003A|1991-06-06|1994-11-08|Nippon Densan Corporation|Motor and circuitry for protecting same|
    US5952747A|1996-12-06|1999-09-14|Nidec Corporation|Rotor and method for making same|
    CN102064654A|2010-12-16|2011-05-18|张家港市江南利玛特设备制造有限公司|Exterior rotor permanent magnet brushless direct current fan motor for air-conditioning system for ship|
    US20150093271A1|2013-09-30|2015-04-02|Minebea Co., Ltd.|Brushless motor and fan using the motor|
    DE59209596D1|1991-06-29|1999-02-04|Papst Motoren Gmbh & Co Kg|Disk storage drive|
    JPH08322222A|1995-05-29|1996-12-03|Matsushita Electric Ind Co Ltd|Outer-rotor brushless motor|
    US6753628B1|1999-07-29|2004-06-22|Encap Motor Corporation|High speed spindle motor for disc drive|
    US20040075356A1|2002-10-16|2004-04-22|Sunonwealth Electric Machine Industry Co., Ltd.|Fan rotor|
    TWM243572U|2003-10-07|2004-09-11|Datech Technology Co Ltd|Hub of fan wheel with improved attachment for metal case|
    DE102004006933A1|2004-02-12|2005-09-01|Conti Temic Microelectronic Gmbh|Fan rotor unit comprises an annular hub which is joined to the inner ring of the rotor and is produced together with the latter as a single item|
    TWI259638B|2004-12-01|2006-08-01|Ind Tech Res Inst|Structure of an electric motor|
    JP2007151349A|2005-11-29|2007-06-14|Nippon Densan Corp|Motor|
    JP2009278768A|2008-05-14|2009-11-26|Mitsuba Corp|Outer rotor type brushless motor|
    US7919893B2|2008-05-14|2011-04-05|Sunonwealth Electric Machine Industry Co., Ltd.|Permanent magnet rotor with annular rib coupling|
    CN201234178Y|2008-07-10|2009-05-06|佛山市顺德区泛仕达机电有限公司|Rotor of outer rotor permanent magnet brushless DC motor|CN110439828B|2019-08-02|2020-11-20|英飞同仁风机股份有限公司|Explosion-proof fan with can dismantle connecting portion|
    法律状态:
    2017-06-13| FG2A| Definitive protection|Ref document number: 2589168 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170613 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201530610A|ES2589168B1|2015-05-05|2015-05-05|ROTOR FOR OUTDOOR ROTOR ELECTRIC MOTOR WITHOUT BRUSHES|ES201530610A| ES2589168B1|2015-05-05|2015-05-05|ROTOR FOR OUTDOOR ROTOR ELECTRIC MOTOR WITHOUT BRUSHES|
    CN201680026226.6A| CN107534337A|2015-05-05|2016-04-07|Rotor for outer rotor brushless motor|
    EP16789353.6A| EP3293858A4|2015-05-05|2016-04-07|Rotor for outer rotor brushless electric motor|
    PCT/ES2016/070235| WO2016177919A1|2015-05-05|2016-04-07|Rotor for outer rotor brushless electric motor|
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