WO2009076805A1 - Claw pole of stepper motor - Google Patents

Claw pole of stepper motor Download PDF

Info

Publication number
WO2009076805A1
WO2009076805A1 PCT/CN2008/071323 CN2008071323W WO2009076805A1 WO 2009076805 A1 WO2009076805 A1 WO 2009076805A1 CN 2008071323 W CN2008071323 W CN 2008071323W WO 2009076805 A1 WO2009076805 A1 WO 2009076805A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
piece
claw
claws
pole piece
Prior art date
Application number
PCT/CN2008/071323
Other languages
French (fr)
Chinese (zh)
Inventor
Chengfang Xiao
Original Assignee
Shanghai Moons' Electric Co., Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Moons' Electric Co., Ltd filed Critical Shanghai Moons' Electric Co., Ltd
Publication of WO2009076805A1 publication Critical patent/WO2009076805A1/en

Links

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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures

Definitions

  • the utility model relates to a pole claw of a stepping motor, the pole claw comprising a pole piece and a plurality of pole claws arranged on the pole piece.
  • Figure 1 shows a known pole-claw stepper motor pole which is directly stamped from a magnetically permeable material, comprising a pole piece 10 and a plurality of pole claws 13, pole claws 13 It is a claw-like structure that protrudes from the pole piece 10 and extends in a one-piece manner in the vertical direction of the inner ring edge in the pole piece.
  • a stepping motor pole is described in the Chinese Utility Model Patent Specification of the publication No. CN 2394368Y.
  • the pole claws become dense, the thickness of the pole claws is larger than the width, and the integrally formed pole claws and pole claws are difficult to pass, for example, stamping. Way of processing. Summary of the invention
  • the technical problem to be solved by the present invention is to improve the pole claw structure of the stepping motor so that when the pole claws are dense, the pole claws can still be processed by stamping.
  • the stepping motor pole claw of the present invention is characterized by comprising an annular first pole claw piece, an annular second pole piece piece and a plurality of pole claw teeth, and a second pole piece piece and the first
  • the pole piece forms a laminated structure, and the first pole piece and the pole piece are formed by integral molding.
  • the pole claw is divided into two parts, the thickness of the second pole claw piece, the first pole claw piece and the pole claw tooth is thinner than the existing pole claw structure, so the pole claw of the present invention is even in the pole claw tooth When it is very dense, it can still be processed by stamping. BRIEF abstract
  • FIG. 1 is a schematic view showing the structure of a pole claw of a known stepping motor.
  • Figure 2 is a schematic view showing the structure of a portion of the pole claw of the present invention.
  • the pole claw includes a first pole claw piece 21 and a second pole piece piece. 23 and a plurality of pole claws 25, the pole claw teeth 25 are integral with the first pole claw piece 21, the first pole claw piece 21 and the second pole piece piece 23 are substantially the same shape, and the second pole piece piece 23 is disposed on Above the first pole claw piece 21, the two form a laminated structure.
  • the pole claw of the present invention is split into two parts, the thickness of the first pole claw piece 21, the second pole piece piece 23, and the pole claw teeth 25 is thinned.
  • the pole claw structure of the utility model can make the width of the pole claw teeth 25 larger than the thickness, so even if the pole claws are required to be dense, the pole claws of the utility model can be processed by stamping. Further, since the second pole claw piece 23 is superposed on the first pole claw piece 21, the pole claw teeth 25 extend from the first pole piece piece 21 toward the second pole piece piece 23, as shown in FIG. 2A. As shown, the thickness of the pole claw 25 and the abutment of the first pole claw piece 21 and the second pole claw piece 23 becomes thick, which enhances the magnetic permeability of the pole claw.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

A claw pole of a stepper motor. The claw pole includes a first claw-pole piece (21) with a ring type, a second claw-pole piece (23) with a ring type and several claw-pole teeth (25). The second claw-pole piece (23) and the first claw-pole piece (21) are formed into a laminate structure. The first claw-pole piece (21) and the claw-pole teeth (25) are formed in one-piece.

Description

歩进马达极爪 技术领域  Breaking motor poles
本实用新型涉及一种步进马达的极爪， 该极爪包括一极爪片和设置于极爪片 上的多个极爪齿。 背景技术  The utility model relates to a pole claw of a stepping motor, the pole claw comprising a pole piece and a plurality of pole claws arranged on the pole piece. Background technique
图 1示出了一种公知的极爪式步进马达极爪， 该步进马达极爪由导磁材料直 接冲压成型， 包括一极爪片 10和多个极爪齿 13， 极爪齿 13是为突起于极爪片 10上 的爪状结构， 并以一体成型的方式延伸于极爪片内的内环边缘的垂直方向。 这样 的步进马达极爪在公告号 CN 2394368Y的中国实用新型专利说明书中所有记载。 对 于此类步进马达极爪， 为当马达步进角度很小时， 极爪齿变得很密， 极爪齿的厚 度大于宽度， 一体成型的极爪片和极爪齿很难通过例如冲压成型的方式加工。 发明内容  Figure 1 shows a known pole-claw stepper motor pole which is directly stamped from a magnetically permeable material, comprising a pole piece 10 and a plurality of pole claws 13, pole claws 13 It is a claw-like structure that protrudes from the pole piece 10 and extends in a one-piece manner in the vertical direction of the inner ring edge in the pole piece. Such a stepping motor pole is described in the Chinese Utility Model Patent Specification of the publication No. CN 2394368Y. For such stepping motor poles, in order to make the motor stepping angle very small, the pole claws become dense, the thickness of the pole claws is larger than the width, and the integrally formed pole claws and pole claws are difficult to pass, for example, stamping. Way of processing. Summary of the invention
本实用新型所要解决的技术问题是通过步进马达的极爪结构进行改进， 以使 极爪齿很密时， 极爪仍然能通过冲压成型的方式加工。  The technical problem to be solved by the present invention is to improve the pole claw structure of the stepping motor so that when the pole claws are dense, the pole claws can still be processed by stamping.
为了解决所述技术问题， 本实用新型的步进马达极爪的特点是包括环形的第 一极爪片、 环形的第二极爪片和多个极爪齿， 第二极爪片与第一极爪片形成叠层 结构， 第一极爪片和所述极爪齿通过一体成型的方式形成。  In order to solve the technical problem, the stepping motor pole claw of the present invention is characterized by comprising an annular first pole claw piece, an annular second pole piece piece and a plurality of pole claw teeth, and a second pole piece piece and the first The pole piece forms a laminated structure, and the first pole piece and the pole piece are formed by integral molding.
由于极爪分成两部分， 与现有的极爪结构相比， 第二极爪片、 第一极爪片和 极爪齿的料厚变薄， 故本实用新型的极爪即使在极爪齿很密时， 仍然能通过冲压 成型的方式加工。 附图概述  Since the pole claw is divided into two parts, the thickness of the second pole claw piece, the first pole claw piece and the pole claw tooth is thinner than the existing pole claw structure, so the pole claw of the present invention is even in the pole claw tooth When it is very dense, it can still be processed by stamping. BRIEF abstract
本发明的具体特征、 性能由以下的实施例及其附图进一步给出。  Specific features and properties of the present invention are further exemplified by the following examples and the accompanying drawings.
图 1是一种公知的步进马达的极爪结构示意图。  BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of a pole claw of a known stepping motor.
图 2显示了本实用新型的极爪的一部的结构示意图。 本发明的最佳实施方式  Figure 2 is a schematic view showing the structure of a portion of the pole claw of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
本实用新型的一实施例， 如图 2所示， 极爪包括第一极爪片 21、 第二极爪片 23以及多个极爪齿 25， 极爪齿 25与第一极爪片 21是一体的， 第一极爪片 21和第二 极爪片 23的形状大致相同， 第二极爪片 23设置于第一极爪片 21之上， 两者形成叠 层结构。 与图 1所示的极爪结构相比， 由于本实用新型的极爪是拆分为两部分， 第 一极爪片 21、 第二极爪片 23以及极爪齿 25的料厚变薄， 值得一提的是， 本实用新 型的极爪结构可使得极爪齿 25的宽度大于厚度， 故即使对于要求极爪齿很密的情 况， 本实用新型的极爪也可以通过冲压成型的方式加工； 此外， 由于第二极爪片 23叠置在第一极爪片 21之上， 极爪齿 25从第一极爪片 21朝第二极爪片 23的方向延 伸， 如图 2的 A处所示， 极爪齿 25与第一极爪片 21与第二极爪片 23的邻接处的料厚 变厚， 增强了极爪的导磁性能。 According to an embodiment of the present invention, as shown in FIG. 2, the pole claw includes a first pole claw piece 21 and a second pole piece piece. 23 and a plurality of pole claws 25, the pole claw teeth 25 are integral with the first pole claw piece 21, the first pole claw piece 21 and the second pole piece piece 23 are substantially the same shape, and the second pole piece piece 23 is disposed on Above the first pole claw piece 21, the two form a laminated structure. Compared with the pole claw structure shown in FIG. 1, since the pole claw of the present invention is split into two parts, the thickness of the first pole claw piece 21, the second pole piece piece 23, and the pole claw teeth 25 is thinned. It is worth mentioning that the pole claw structure of the utility model can make the width of the pole claw teeth 25 larger than the thickness, so even if the pole claws are required to be dense, the pole claws of the utility model can be processed by stamping. Further, since the second pole claw piece 23 is superposed on the first pole claw piece 21, the pole claw teeth 25 extend from the first pole piece piece 21 toward the second pole piece piece 23, as shown in FIG. 2A. As shown, the thickness of the pole claw 25 and the abutment of the first pole claw piece 21 and the second pole claw piece 23 becomes thick, which enhances the magnetic permeability of the pole claw.

Claims

权利要求 Rights request
1 . 一种步进马达极爪， 其特征在于， 包括环形的第一极爪片、 环形的第二 极爪片和多个极爪齿， 第二极爪片与第一极爪片形成叠层结构， 第一极爪片和所 述极爪齿通过一体成型的方式形成。 What is claimed is: 1 . A stepping motor pole, comprising: an annular first pole piece, an annular second pole piece and a plurality of pole claws, the second pole piece forming a stack with the first pole piece The layer structure, the first pole claw piece and the pole claw tooth are formed by integral molding.
2.如权利要求 1所述的步进马达极爪， 其特征在于， 所述极爪齿从所述第一极 爪片朝第二极爪片方向延伸。  The stepping motor pole according to claim 1, wherein the pole claws extend from the first pole piece toward the second pole piece direction.
3. 如权利要求 1所述的步进马达极爪， 其特征在于， 所述极爪齿的宽度大于 厚度。  3. The stepper motor pole according to claim 1, wherein the pole claw teeth have a width greater than a thickness.
PCT/CN2008/071323 2007-12-17 2008-06-16 Claw pole of stepper motor WO2009076805A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720199352.X 2007-12-17
CNU200720199352XU CN201153222Y (en) 2007-12-17 2007-12-17 Step motor pole

Publications (1)

Publication Number Publication Date
WO2009076805A1 true WO2009076805A1 (en) 2009-06-25

Family

ID=40128899

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/071323 WO2009076805A1 (en) 2007-12-17 2008-06-16 Claw pole of stepper motor

Country Status (2)

Country Link
CN (1) CN201153222Y (en)
WO (1) WO2009076805A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2052076U (en) * 1989-03-23 1990-01-31 吴政 Multi-functional breezy electric fan
US20050046305A1 (en) * 2003-09-02 2005-03-03 Kunitake Matsushita Claw-pole type stepping motor
CN101047330A (en) * 2006-03-31 2007-10-03 厦门达真磁记录有限公司 Stator structure of permanent magnetic claw step electric machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2052076U (en) * 1989-03-23 1990-01-31 吴政 Multi-functional breezy electric fan
US20050046305A1 (en) * 2003-09-02 2005-03-03 Kunitake Matsushita Claw-pole type stepping motor
CN101047330A (en) * 2006-03-31 2007-10-03 厦门达真磁记录有限公司 Stator structure of permanent magnetic claw step electric machine

Also Published As

Publication number Publication date
CN201153222Y (en) 2008-11-19

Similar Documents

Publication Publication Date Title
JP5239200B2 (en) Permanent magnet rotating electric machine
WO2016101454A1 (en) Permanent magnet rotor and direct current brushless motor thereof
CN204928382U (en) Stator is towards piece and stator core and motor
CN102891552A (en) Built-in permanent magnet motor rotor punching and built-in permanent magnet motor rotor
WO2010146175A9 (en) Axial flux permanent magnet machine
EP2709248A2 (en) Axial gap type electric rotating machine, electric wheelchair and electric bicycle
JP2008048481A (en) Permanent magnet motor
CN107026518A (en) Stator module and motor and electronic pump with the stator module
TWI376460B (en) Fan and inner-rotor motor thereof
WO2009076805A1 (en) Claw pole of stepper motor
JP5307328B2 (en) Stator structure
JP2006254617A (en) Laminated core for motor
JP2006217741A (en) Rotor and motor
JP2006014521A (en) Rotor for electric motor
JP2004254403A (en) Permanent magnet type motor and manufacturing method for the motor
JP3821185B2 (en) Permanent magnet motor
CN203039447U (en) Built-in permanent magnet motor rotor punching sheet and built-in permanent magnet motor rotor
JP2010081776A (en) Rotor of synchronous motor, and method of manufacturing the same rotor
JP2012231586A (en) Rotating electric machine
JP5324131B2 (en) Motor with brush
WO2008145633A3 (en) Engine brake
TWM331590U (en) The electric fan with multiple rotor vanes
JP2008196515A (en) Pop nut
CN210867316U (en) Permanent magnet motor punching sheet and permanent magnet motor
JP2000228837A (en) Permanent magnet motor

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08757734

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08757734

Country of ref document: EP

Kind code of ref document: A1