WO2005088810A1 - ブラシレスモータ - Google Patents
ブラシレスモータ Download PDFInfo
- Publication number
- WO2005088810A1 WO2005088810A1 PCT/JP2005/004078 JP2005004078W WO2005088810A1 WO 2005088810 A1 WO2005088810 A1 WO 2005088810A1 JP 2005004078 W JP2005004078 W JP 2005004078W WO 2005088810 A1 WO2005088810 A1 WO 2005088810A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- waterproof case
- brushless motor
- casing
- terminal bar
- hollow
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- 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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
-
- 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
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Definitions
- the present invention relates to a brushless motor, and more particularly to an improvement in workability and waterproofness of a connection portion between an excitation coil wound on a stator and a circuit board provided in a casing. About things.
- a brushless motor of this type for example, a rotor in which a rotor is rotatably supported and provided on a top surface of a casing in which a circuit board is stored, and a stator on which an exciting coil is wound are fixed.
- a rotor in which a rotor is rotatably supported and provided on a top surface of a casing in which a circuit board is stored, and a stator on which an exciting coil is wound are fixed. What is done is publicly known (for example, see Patent Document 1).
- a powerful brushless motor requires an electrical connection between an exciting coil and an electric circuit on a circuit board.
- a linear and rigid conductor is used as a terminal pin, and one end of the terminal pin is provided.
- the other side is soldered to the excitation coil, and the other end is joined to a relatively wide conductive member called a bus bar provided on the circuit board, so that the electric connection between the excitation coil of the stator and the circuit board is made. Connections are being made.
- the terminal pin may be used for a blower for a power vehicle provided so that the terminal pin penetrates the casing, etc. It is necessary to take sufficient waterproofing measures for the penetrating parts. Further, in the above-described conventional example, the soldering portion between the exciting coil and the terminal pin is formed together with the water-proofing treatment of the exciting coil, and from the viewpoint of providing an inexpensive brushless motor, It is desired to further improve the workability of parts requiring such a waterproofing treatment.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-69741
- the present invention has been made in view of the above situation, and has an exciting coil wound around a stator.
- An object of the present invention is to provide a brushless motor that improves workability of electrical connection with a circuit board disposed in a casing, and that ensures waterproofness with a simple structure.
- a brushless motor including a casing configured to house and hold a circuit board and rotatably support a rotor, wherein an excitation is provided inside the rotor.
- a stator having a coil wound thereon is provided, and the exciting coil is connected to the circuit board via a terminal bar provided on the casing.
- the terminal bar is configured such that one end to which the excitation coil is connected is located at the hollow portion of the waterproof case having a hollow portion. Further, the other end of the terminal bar is made to protrude with the waterproof case force, and the hollow portion of the hollow portion is filled with an adhesive and embedded, and the waterproof case is formed in the hollow shape.
- a brushless motor is provided which is provided on the upper surface side of the casing such that the cut portion faces the rotor.
- the terminal bar used for electrical connection between the excitation coil and the circuit board is embedded in a waterproof case having a hollow portion, and this preventive case is mounted on the casing of the brushless motor.
- the fitting force or the integral molding is used, and the adhesive is injected into the hollow space.
- a relatively simple structure is used to insulate the connection between the excitation coil and the terminal. In addition to this, it is possible to easily carry out the process, and to ensure the watertightness of the portion penetrating the casing of the terminal bar.
- FIG. 1 is a longitudinal sectional view showing a first configuration example of a brushless motor according to an embodiment of the present invention.
- FIG. 2 is a plan view of the brushless motor shown in FIG. 1 in a state before a blower fan is attached.
- FIG. 3 A side view of the brushless motor shown in FIG. 1 before a blower fan is attached. It is.
- FIG. 4 is a bottom view of the brushless motor shown in FIG. 1.
- FIG. 5 is a longitudinal sectional view of a main part in an exploded state for explaining a procedure for assembling a casing.
- FIG. 6 is an enlarged vertical sectional view near a waterproof case in the first configuration example shown in FIG. 1.
- FIG. 7 is an enlarged vertical sectional view near a waterproof case in a second configuration example.
- FIG. 8 is an enlarged vertical sectional view near a waterproof case in a third configuration example.
- FIG. 9 is an enlarged vertical sectional view near a waterproof case in a fourth configuration example.
- the brushless motor according to the embodiment of the present invention has a base fixed to the casing 1.
- Stator 2 a rotor 3 rotatably provided on the stator 2, and a circuit board 4 for controlling energization of an exciting coil 7 wound on the stator 2 (see FIG. 1). 1).
- a brushless motor having a powerful structure is used, for example, for rotating a blower fan 5 in a vehicle air conditioner, and the blower fan 5 is fixed to a tip 12a of a rotating shaft 12. (See Figure 1).
- the stator 2 has a laminated core 6, an exciting coil 7 wound around the laminated core 6, an upper insulating cover 8a, and a lower insulating cover and bearing holder 8b. And is arranged inside the rotor 3.
- the upper insulating cover 8a has an annular flange 15b formed at an appropriate position on the outer peripheral surface of the hollow cylindrical portion 15a, and the upper flange is formed on the hollow cylindrical portion 15a.
- the bearing holder 9a is press-fitted.
- the upper bearing holder 9a holds the upper bearing 10a and is provided with a column-shaped upper press-fitting portion 14a which is pressed into the upper side (the rotor 3 side in FIG. 1) of the laminated core 6. ing
- the lower insulating cover and bearing holder 8b functions as an insulating cover on the lower side of the laminated core 6 (the case 1 side in FIG. 1), similarly to the upper insulating cover 8a, and also has a lower bearing. 10b is stored and held. That is, the lower insulating cover and bearing holder 8b has a lower bearing 10b disposed inside a substantially cylindrical portion 16a similarly to the upper insulating cover 8a, and an outer peripheral surface of the portion 16a. An annular collar 16b is formed at an appropriate position. Further, a lower press-fit portion 14b which is press-fitted into the lower portion of the laminated core 6 is provided at an end of the portion 16a opposite to the casing 1.
- the upper press-fitting portion 14a of the upper bearing holder 9a is press-fitted into a central portion on the upper side thereof, and the lower press-fitting portion of the lower insulating cover and bearing holder 8b is press-fitted into the lower central portion.
- the upper insulating cover 8a and the upper bearing holder 9a are held from above and below by the lower insulating cover and bearing holder 8b so as to be held (see FIG. 1). .
- the lower insulating cover and bearing holder 8b is opposite to the end where the lower press-fit portion 14b is formed.
- the end on the side is fixed to a motor cover 21 which is a first cover member constituting the casing 1.
- the upper bearing holder 9a and the lower insulating cover / bearing holder 8b have a hollow central portion, and the rotary shaft 12 is passed through the hollow portion. It is rotatably supported on case 1 by 10a and lower bearing 10b (see Fig. 1).
- the rotor 3 has a yoke 11 formed on the approximate bowl side, and has an open surface formed on the casing 1 side and a closed surface formed on the upper surface, and is punched in the center of the closed surface.
- the rotating shaft 12 passes through the provided shaft through hole 1 la, is fixed to the rotating shaft 12, and is held on the casing 1.
- a plurality of magnets 13 are fixed to the inner peripheral surface of the yoke 11 at appropriate intervals in the circumferential direction, and face the peripheral surface of the laminated core 6 via an appropriate gap. (refer graph1).
- the casing 1 also acts as a force with the motor cover 21 and the board cover 22.
- the casing 1 according to the embodiment of the present invention differs from the conventional case in that there are no through holes for ventilating the inside and outside. It is not formed and is configured in a closed container shape.
- the motor cover 21 as the first case member is made of, for example, an aluminum member and has a generally disk-shaped outer appearance (see FIG. 2).
- a first annular peripheral wall 21b is provided upright on the peripheral portion of the cover base 21a (see FIG. 1).
- the rotor 3 is rotatably supported as described above (see FIGS. 1 and 3).
- annular groove 21c is recessed, and an O-ring 23 is fitted into the annular groove 21c, and is fitted into the first annular peripheral wall 21b.
- An O-ring 23 is wound.
- the circuit board 4 is connected to a board-side connector 28 attached to the circuit board 4, a cover-side connector 29 provided on a board cover 22 described later, and an external connector connection portion 30.
- the child circuit is configured.
- the board-side connector 28 is attached near the edge of the circuit board 4 so as to partially protrude from the circuit board 4 (see FIGS. 1 and 5).
- the power bar side connector 29 is fitted.
- the circuit board 4 and the exciting coil 7 are electrically connected to each other via a terminal bar 24 made of a conductive member. That is, the terminal bar 24 according to the embodiment of the present invention has one end formed in a substantially U-shape for connection of the excitation coil 7, and the immediately below the U-shaped end is the waterproof case 25. It is buried (see Figure 1).
- the waterproof case 25 is formed in a substantially columnar shape as a whole, and includes a large-diameter portion 25a and a small-diameter portion 25b, and the large-diameter portion 25a has a hollow bottomed cylindrical shape.
- the U-shaped end of the terminal bar 24 is positioned at that portion, while the U-shaped end of the terminal bar 24 is positioned in the axial direction of the small diameter portion 25b. A portion of the substantially linear portion extending from the end is buried, and the remaining portion of the terminal bar 24 projects from the small diameter portion 25b (see FIG. 1).
- a hollow fitting cylindrical portion 26 is formed at an appropriate portion of the motor cover base portion 21a of the motor cover 21 so as to protrude toward the rear surface side.
- the fitting cylindrical portion 26 has a small diameter of the waterproof case 25.
- the part 25b is to be inserted.
- the outer peripheral surface of the small-diameter portion 25b is provided with a waterproof case annular groove 61, and the O-ring 27 is wound thereon.
- the end of the exciting coil 7 is welded or soldered to the U-shaped end of the terminal bar 24.
- the hollow portion of the large diameter portion 25a is filled with an adhesive 39, and the other end of the terminal bar 24 is to be soldered to the circuit board 4 (see FIG. 1). .
- the welding or soldering of the terminal bar 24 to the end of the exciting coil 7 is performed in a state where the terminal bar 24 is embedded in the waterproof case 25, in other words, the U-shape of the terminal bar 24, as described above. This is performed in a state in which the end of the shape is located inside the large-diameter portion 25a. ) Indicates that the tip of the welding electrode or soldering tool enters the inside of the large diameter part 25a. In addition, it is necessary that the size of the terminal bar 24 be set to a size that allows sufficient welding or soldering work between the end of the terminal bar 24 and the end of the exciting coil 7.
- the terminal bar 24 is a separate component that does not necessarily need to be provided by insert molding on the small-diameter portion 25b of the waterproof case 25. Before or after welding or soldering to the exciting coil 7, The small diameter portion 25b may be inserted into the small diameter portion 25b, and then the large diameter portion 25a may be filled with a bonding agent to be fixed to the waterproof case 25.
- the end of the excitation coil 7 welded or soldered to the terminal bar 24 also introduces the upper side of the waterproof case 25, that is, the opening side force of the large diameter portion 25a (see FIG. 1), but not necessarily.
- the upper force of the waterproof case 25 does not need to be introduced, but may be introduced from the side surface of the waterproof case 25, for example, from the side of the large diameter portion 25a.
- the board cover 22 as the second case member is formed, for example, by using a resin member, and has an approximately disk-like overall appearance in view of the bottom-side force, similarly to the motor cover 21. (See FIGS. 1 and 4), and a second annular peripheral wall 22b is provided upright on the peripheral portion of the substrate cover base portion 22a (see FIG. 1).
- the inner diameter of the second annular peripheral wall 22b is substantially equal to the outer diameter of the first annular peripheral wall 21b of the motor cover 21 (see FIG. 1).
- the motor cover 21 is inserted into the board cover 22 so as to be joined to the inner peripheral surface of the second annular peripheral wall 22b of the board cover 22 in the outer peripheral partial force of the first annular peripheral wall 21b. (See Figure 1).
- a storage space 38 for storing and holding the circuit board 4 is formed between the motor cover 21 and the board cover 22.
- the board cover base 22a of the board cover 22 has a board side attached to the circuit board 4 when the motor cover 21 is fitted into the board cover 22.
- a cover-side connector 29 to be fitted to the connector 28 is formed in a body, and when the motor cover 21 is fitted to the board cover 22, its position is set in advance so as to be fitted to each other. Become.
- the connector terminal 29a of this cover side connector 29 is
- the board cover 22 according to the embodiment of the present invention is to be buried when the board cover 22 is manufactured by resin molding, and the external connection connector 30 provided integrally with the outer surface of the board cover 22 is provided. One end is located (see Figure 1).
- An external connector (not shown) is fitted into the external connector 30 and is supplied to the circuit board 4 from the outside via the power supply voltage and driving pulse force, the external connector 30, the cover connector 29 and the board connector 28. It is possible.
- the preset assembling position is a position where the board-side connector 28 and the cover-side connector 29 are simultaneously fitted as they are when the motor cover 21 and the board cover 22 are fitted to each other.
- the motor cover 21 has the stator 2 and the rotor 3 attached thereto, and the excitation coil 7 and the circuit board 4 are connected via the terminal bar 24. Assume that the O-ring 23 is further wound.
- the relative position of the motor cover 21 and the board cover 22 in the circumferential direction is matched with a predetermined location set in advance, and then the portion of the first annular peripheral wall 21b of the motor cover 21 is attached to the board. Push it gradually into the cover 22.
- the board-side connector 28 and the cover-side connector 29 start to be fitted, and the top of the peripheral wall 41 of the cover-side connector 29 is fitted with the fitting groove 28c of the board-side connector 28.
- the fitting between the motor cover 21 and the board cover 22 and the fitting between the board-side connector 28 and the cover-side connector 29 are completed (see FIGS. 1 and 5). Then, by fitting an external connector (not shown) to the external connector connection portion 30, it is possible to supply a power voltage and a drive signal with an external force.
- the second configuration example is different from the first configuration example in that the prevention case 25B is formed integrally with the motor cover 21.
- the waterproof cover 25B is formed in a hollow cylindrical shape with a bottom, and is formed integrally with the motor cover 21 so that the opening side is the upper surface side of the motor cover 21, that is, the side where the rotor 3 is located. It becomes something.
- the terminal bar 24 has one end formed in a U-shape located in the hollow portion of the waterproof case 25B and the U-shape.
- the substantially linear portion where the force of one end formed also extends, penetrates the bottom of the waterproof case 25B, that is, the motor cover 21, and the other end reaches the circuit board 4, and is soldered to the circuit board 4. It is now attached.
- the terminal of the excitation coil 7 is connected to one end of the U-shaped terminal bar 24 (see FIG. 7).
- the size of the opening that is, the inner diameter R
- the tip of the welding electrode or the soldering tool is the waterproof case 25B. It must be set to a size that allows sufficient penetration or soldering between the end of the terminal bar 24 and the end of the excitation coil 7.
- the end of the exciting coil 7 may be introduced from the side of the waterproof case 25B, as in the first configuration example.
- the size of the opening of the waterproof case 25C where one end formed in the U-shape of the terminal bar 24 is located is relatively small, and the force of the waterproof case 25C is also waterproof.
- the case 25C differs from the first configuration example in that the case 25C also includes two members, and the other components are basically the same as the first configuration example. is there.
- the waterproof case 25C includes a first waterproof case member 25C1 and a second waterproof case member 25C2, and the first waterproof case member 25C1 is formed in a hollow cylindrical shape.
- the second waterproof case member 25C2 is the waterproof case in the first configuration example. It is formed in a structure basically similar to the small diameter portion 25b of the screw 25.
- the first and second waterproof case members 25C1 and 25C2 have a cylindrical appearance and the same outer diameter (see FIG. 8).
- the terminal bar 24 is attached to the waterproof case 25C after the terminal bar 24 and the excitation coil 7 are welded or soldered.
- the size of the opening of the case member 25C1 does not need to take into account the penetration of the tip of the welding electrode or the soldering tool as described in the first configuration example.
- the inner diameter R1 of the first waterproof case member 25C1 is sufficiently smaller than the inner diameter R shown in FIG.
- terminal bar 24 to waterproof case 25C in a strong configuration will be described first. First, a predetermined portion of terminal bar 24 and exciting coil 7 is welded or soldered.
- the second waterproof case member 25C2 is fitted by itself into the fitting tubular portion 26 of the motor cover 21 such that the O-ring 27 is located inside the casing 1 as shown in FIG. Let it be.
- the first waterproof case member 25C1 is positioned on the second waterproof case member 25C2 (see FIG. 8), and the terminal bar 24 has an end opposite to the one end formed in a U-shape. While being inserted into the inside of the first waterproof case member 25C1 from the side, it is inserted into the second waterproof case member 25C2 to form a U-shaped terminal bar 24 as shown in FIG. One end is located in the first waterproof case member 25C1, and the other end is located in a predetermined portion where soldering with the circuit board 4 is possible.
- the first and second waterproof case members 25C1 and 25C2 are fixed to each other and the terminal valve to the waterproof case 25C is connected. Will be completed.
- the end of the exciting coil 7 may be configured to be able to introduce the side force of the first waterproof case member 25C1 as in the first configuration example. .
- the waterproof case 25D in the fourth configuration example has a configuration in which the O-ring 27 of the second waterproof case member 25C2 forming the waterproof case 25C in the third configuration example is omitted.
- the waterproof case 25D includes a first waterproof case member 25D1 and a second waterproof case member 25D2, and the second waterproof case member 25D2 has a terminal board near the center of the cylindrical member.
- the first waterproof case member 25C2 in the third configuration example has the same force as the second waterproof case member 25C2 in the third configuration example. Unlike O-rings, it does not have a structure in which it is wound, and has a cylindrical surface (see Figure 9).
- the procedure for attaching the terminal bar 24 to the waterproof case 25D in the strong configuration is basically the same as that described in the third configuration example, and therefore, the detailed description is omitted here. It shall be.
- a waterproof structure of a terminal for electrically connecting the exciting coil to the circuit board is provided, and a portion where waterproofness is required, for example, a brushless motor for driving a blower of a vehicle air conditioner, or the like. Applicable to
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- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Brushless Motors (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05720350.7A EP1732195B1 (en) | 2004-03-11 | 2005-03-09 | Brushless motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-069689 | 2004-03-11 | ||
JP2004069689A JP2005261089A (ja) | 2004-03-11 | 2004-03-11 | ブラシレスモータ |
Publications (1)
Publication Number | Publication Date |
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WO2005088810A1 true WO2005088810A1 (ja) | 2005-09-22 |
Family
ID=34975915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/004078 WO2005088810A1 (ja) | 2004-03-11 | 2005-03-09 | ブラシレスモータ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070001528A1 (ja) |
EP (1) | EP1732195B1 (ja) |
JP (1) | JP2005261089A (ja) |
CN (1) | CN1930761A (ja) |
WO (1) | WO2005088810A1 (ja) |
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CN101848499B (zh) * | 2009-03-25 | 2013-05-08 | 上海贝尔股份有限公司 | 改进无线系统中的分级业务传输的方法、网络单元及系统 |
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US20100123363A1 (en) * | 2008-11-17 | 2010-05-20 | Electrolux Home Products, Inc. | Method of preventing corrosion in a pump motor for a dishwasher, and associated apparatus |
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JP5476005B2 (ja) * | 2009-02-10 | 2014-04-23 | ミネベア株式会社 | モータ |
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WO2011152340A1 (ja) * | 2010-06-04 | 2011-12-08 | 日本電産株式会社 | モータ |
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JP5757419B2 (ja) * | 2011-08-30 | 2015-07-29 | ブラザー工業株式会社 | 印刷装置 |
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JP6135982B2 (ja) * | 2013-01-17 | 2017-05-31 | 日本電産株式会社 | モータ |
DE102013217993A1 (de) * | 2013-09-09 | 2015-03-12 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Leiterplattenanordnung, Verfahren zum Herstellen einer Leiterplattenanordnung und Kühlerlüftermodul |
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WO2016103396A1 (ja) * | 2014-12-25 | 2016-06-30 | 三菱電機株式会社 | モータ、空気調和装置、及びモータの製造方法 |
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WO2020069583A1 (pt) * | 2018-10-01 | 2020-04-09 | Gembrap Geradores De Energia E Motores Brasileiros De Alta Performance S.A. | Motor eletromagnético com acionamento e comutação magneto-mecânica |
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DE202007001507U1 (de) * | 2007-01-29 | 2007-04-19 | Gruner Ag | Volumenstromregler |
-
2004
- 2004-03-11 JP JP2004069689A patent/JP2005261089A/ja active Pending
-
2005
- 2005-03-09 CN CNA2005800076599A patent/CN1930761A/zh active Pending
- 2005-03-09 WO PCT/JP2005/004078 patent/WO2005088810A1/ja active Application Filing
- 2005-03-09 EP EP05720350.7A patent/EP1732195B1/en not_active Not-in-force
-
2006
- 2006-09-08 US US11/517,332 patent/US20070001528A1/en not_active Abandoned
Patent Citations (4)
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JP2000295810A (ja) * | 1999-03-31 | 2000-10-20 | Nikkiso Co Ltd | ターボポンプ用モータ |
JP2000350430A (ja) * | 1999-05-31 | 2000-12-15 | Calsonic Kansei Corp | ブラシレスモータ |
JP2002252958A (ja) * | 2001-02-23 | 2002-09-06 | Mitsubishi Electric Corp | ブラシレスdcモータ |
JP2003339135A (ja) * | 2002-05-20 | 2003-11-28 | Mitsuba Corp | モータの給電部構造 |
Non-Patent Citations (1)
Title |
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See also references of EP1732195A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101848499B (zh) * | 2009-03-25 | 2013-05-08 | 上海贝尔股份有限公司 | 改进无线系统中的分级业务传输的方法、网络单元及系统 |
Also Published As
Publication number | Publication date |
---|---|
CN1930761A (zh) | 2007-03-14 |
JP2005261089A (ja) | 2005-09-22 |
EP1732195B1 (en) | 2013-06-05 |
EP1732195A1 (en) | 2006-12-13 |
US20070001528A1 (en) | 2007-01-04 |
EP1732195A4 (en) | 2010-03-03 |
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