WO2014010373A1 - Structure de contacts électriques et moteur électrique - Google Patents

Structure de contacts électriques et moteur électrique Download PDF

Info

Publication number
WO2014010373A1
WO2014010373A1 PCT/JP2013/066575 JP2013066575W WO2014010373A1 WO 2014010373 A1 WO2014010373 A1 WO 2014010373A1 JP 2013066575 W JP2013066575 W JP 2013066575W WO 2014010373 A1 WO2014010373 A1 WO 2014010373A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact structure
electrical contact
contact member
commutator
base material
Prior art date
Application number
PCT/JP2013/066575
Other languages
English (en)
Japanese (ja)
Inventor
紘敬 三輪
南部　俊和
義貴 上原
Original Assignee
日産自動車株式会社
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 日産自動車株式会社 filed Critical 日産自動車株式会社
Priority to JP2014524704A priority Critical patent/JP5862776B2/ja
Publication of WO2014010373A1 publication Critical patent/WO2014010373A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres

Definitions

  • the present invention relates to an electrical contact structure and an electric motor.
  • Electric contact structures that slide against each other under pressure are used for electric motors (electric motors / generators) and pantographs.
  • electric motors electric motors / generators
  • pantographs In such a structure, when the contact member is worn, it is necessary to perform maintenance such as component replacement. Therefore, in JP2002-25346A, the surface of the contact member is coated with conductive diamond-like carbon (hereinafter referred to as “DLC” as appropriate) in order to improve wear resistance.
  • DLC conductive diamond-like carbon
  • An object of the present invention is to provide an electric contact structure and an electric motor that can prevent wear of contact members and obtain good conformability between members.
  • One embodiment of the electrical contact structure according to the present invention is an electrical contact structure that slides against each other in a pressurized state. Then, one contact member containing conductive hard carbon, a base material, and a surface of the base material which is formed in a region where the one contact member abuts and includes at least one of an iron group element and titanium. And the other contact member having a layered material.
  • FIG. 1 is a view showing an electric motor suitable for using the electrical contact structure according to the present invention.
  • FIG. 2 is an enlarged view of a portion II in FIG.
  • FIG. 3 is a diagram for explaining an example of a method for forming the layered material 23 b on the base material 23 a of the commutator 23.
  • FIG. 4 is a view showing a second embodiment of the electrical contact structure according to the present invention.
  • FIG. 5 is a view showing a third embodiment of the electrical contact structure according to the present invention.
  • FIG. 1 is a view showing an electric motor suitable for using the electrical contact structure according to the present invention.
  • the electric motor 1 is a DC motor.
  • the electric motor has an electric motor function for generating mechanical power when electric energy is supplied, and has a generator function for generating electric energy when mechanical energy is supplied.
  • the electric motor 1 shown in FIG. 1 includes a case 10 and a rotor 20.
  • the case 10 has a substantially cylindrical shape.
  • a pair of bearings 11 are coaxially fitted to both end faces 10 a of the case 10.
  • a magnet 12 is provided on the inner wall surface 10 b of the case 10. Further, the case 10 is provided with a plurality of brushes 14 through elastic bodies 13.
  • the rotor 20 includes a rotor shaft 21, a rotor core 22, and a commutator 23.
  • the rotor shaft 21 is a rotating shaft of the rotor 20.
  • the rotor core 22 is provided around the rotor shaft 21.
  • the rotor core 22 is formed by laminating a number of electromagnetic steel plates in the axial direction of the rotor shaft.
  • the rotor core 22 is formed with a coil 22a.
  • the commutator 23 is fixed to the rotor shaft 21.
  • the brush 14 is pressed against the commutator 23 by the elastic body 13.
  • the electric motor 1 shown in FIG. 1 is a DC electric motor having conductive contact members (the brush 14 and the commutator 23).
  • conductive contact members the brush 14 and the commutator 23.
  • the wear resistance is improved by coating the contact member with conductive DLC.
  • the contact member coated with the conductive DLC hardly wears, there is a possibility that the conformability between the members is poor and the contact area between the members remains small.
  • the members have manufacturing accuracy variations, it is difficult to bring the outer peripheral surface of the commutator 23 and the inner peripheral surface of the brush 14 into surface contact with each other, and the members are likely to be in a one-to-one contact state. If the contact member is coated with conductive DLC, the wear resistance will be improved, but it will hardly wear. Will continue. Further, if there are minute irregularities on the outer peripheral surface of the commutator and the inner peripheral surface of the brush, the irregularities will remain without any wear. This also continues the state where the contact area between the members is small. On the other hand, for example, when a commutator having a low hardness is used, the wear resistance is lowered.
  • the inventors configured one contact member (one of the brush 14 and the commutator 23) with hard carbon such as conductive diamond or conductive DLC. Then, a layered material made of a material containing an iron group element or titanium Ti was formed on the surface of the other contact member (the other member of the brush 14 and the commutator 23). Since the iron group element or titanium Ti can promote wear of hard carbon such as diamond and DLC, the conformability between members can be obtained by this embodiment. Specific contents will be described below.
  • FIG. 2 is an enlarged view of the II part of FIG. 1, FIG. 2 (A) shows the initial shape, and FIG. 2 (B) shows the time-lapse shape.
  • the brush 14 is formed of a material containing conductive diamond.
  • the conductive diamond is a diamond semiconductor doped with impurities (such as boron B). This is preferable because good wear resistance can be obtained.
  • the commutator 23 has a layered material 23b containing at least one of an iron group element and titanium Ti on a surface of the base material 23a and at least a region where the brush 14 abuts. Is formed.
  • the layered material 23b disappears in the commutator 23 with time, but remains in the case as dust. Therefore, by examining the dust component and the amount of dust in the case, it can be determined whether or not the layered material 23b containing at least one of the iron group element and titanium Ti has been formed in the initial stage.
  • the material of the base material 23a of the commutator 23 for example, a metal material such as copper Cu, aluminum Al, zinc Zn, gold Au, silver Ag may be used. In this way, since the electric conductivity after the brush 14 and the commutator 23 are familiar with each other is good, the energy efficiency of the electric motor is excellent. Further, the compatibility of the commutator 23 is further improved.
  • a material containing conductive diamond may be used similarly to the brush 14.
  • a conductive diamond layer may be formed on the surface of the metal substrate, or the metal substrate may contain conductive diamond. In this way, after the brush 14 and the commutator 23 become familiar with each other, both are hardly worn, so that the life can be extended.
  • FIG. 3 is a diagram for explaining an example of a method of forming the layered material 23b on the base material 23a of the commutator 23.
  • a method of forming the layered material 23b containing at least one of iron group elements and titanium Ti on the surface of the base material 23a of the commutator 23 for example, a plating method, a chemical vapor deposition method (Chemical Vapor Deposition; CVD) , Physical vapor deposition (PVD), powder deposition, and the like.
  • CVD chemical Vapor Deposition
  • PVD Physical vapor deposition
  • the apparatus for carrying out the powder deposition method includes a jet nozzle N, a heater H for heating helium gas, and a feeder F for supplying a powder material.
  • the jet nozzle N injects a powder material together with helium gas to the workpiece (base material 23a).
  • the conformability of the contact member (brush 14 and commutator 23) can be improved, and good wear resistance after conforming can be obtained. If the electrical contact structure as in this embodiment is applied to an electric motor, an electric motor having excellent maintainability (maintenance-free) can be obtained.
  • FIG. 4 is a view showing a second embodiment of the electrical contact structure according to the present invention, FIG. 4 (A) shows an initial shape, and FIG. 4 (B) shows a shape with time.
  • the brush 14 of the first embodiment described above was formed of a material containing conductive diamond.
  • the surface of the base material 14a is coated with a layered material 14b containing conductive DLC.
  • DLC DiamondiaLike Carbon
  • SP3 crystal structure a diamond structure
  • SP2 crystal structure a graphite structure
  • the above-described powder deposition method and sintering method can be used.
  • the powder deposition method When manufactured by a sintering method, there is little deformation of particles.
  • the powder deposition method when used, the particles are deformed as compared with the sintering method. Therefore, the manufacturing method can be estimated by examining the shape of the particles contained in the layered material 14b.
  • the metal component when manufactured by the sintering method, the metal component is hardly included between the particles, but when manufactured by the powder deposition method, it exists between the particles compared to the case of manufacturing by the sintering method. There is also a feature that there are many metal components. Therefore, it can be said that it is a more preferable method because electric conductivity is improved.
  • FIG. 5 is a view showing a third embodiment of the electrical contact structure according to the present invention, FIG. 5 (A) shows an initial shape, and FIG. 5 (B) shows a time-dependent shape.
  • the layered material 23b containing at least one of the iron group element and titanium Ti is formed on the surface of the base material 23a and at least in the region where the brush 14 abuts.
  • the surface of the base material 23a is coated with a DLC layered material 23c containing conductive DLC. Conductive diamond may be included.
  • a layered material 23b containing at least one of an iron group element and titanium Ti is formed thereon.
  • Layered materials containing conductive diamond and conductive DLC include the above-mentioned powder deposition method, sintering method, chemical vapor deposition method (Chemical Vapor Deposition; CVD), physical vapor deposition method (Physical Vapor Deposition; PVD) Can be formed.
  • the brush 14 may be the same as that in the first embodiment or the second embodiment, and thus the description thereof is omitted.
  • the material composition of the brush 14 and the commutator 23 may be reversed. That is, in the first embodiment, the brush 14 is formed of a material including conductive diamond, and the commutator 23 is formed with the layered material 23b including at least one of an iron group element and titanium Ti. Conversely, the commutator 23 may be formed of a material containing conductive diamond, and a layered material containing at least one of an iron group element and titanium Ti may be formed on the brush 14. The same applies to the second embodiment and the third embodiment.
  • the electric contact of the electric motor has been described.
  • the present invention is not limited to this.
  • the present invention can be applied to various electrical contacts for energizing while being in sliding contact with a counterpart member, such as a pantograph or a movable contact of switches.

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

La présente invention porte sur une structure pour des contacts électriques qui coulissent les uns contre les autres dans un état pressé, ladite structure comprenant : un élément de contact qui contient du carbone dur conducteur ; et un autre élément de contact qui comprend un matériau de base et un matériau stratifié qui est formé sur une région de surface du matériau de base où l'élément de contact est amené en contact, ledit matériau stratifié contenant au moins un élément de groupe de fer ou du titane.
PCT/JP2013/066575 2012-07-12 2013-06-17 Structure de contacts électriques et moteur électrique WO2014010373A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014524704A JP5862776B2 (ja) 2012-07-12 2013-06-17 電気接点構造及び電動機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-156371 2012-07-12
JP2012156371 2012-07-12

Publications (1)

Publication Number Publication Date
WO2014010373A1 true WO2014010373A1 (fr) 2014-01-16

Family

ID=49915841

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/066575 WO2014010373A1 (fr) 2012-07-12 2013-06-17 Structure de contacts électriques et moteur électrique

Country Status (2)

Country Link
JP (1) JP5862776B2 (fr)
WO (1) WO2014010373A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0778664A (ja) * 1993-09-10 1995-03-20 Hitachi Koki Co Ltd セラミックス整流子の製造方法
JPH07111760A (ja) * 1993-10-08 1995-04-25 Hitachi Ltd 珪化物系セラミックスを用いた整流子
JPH07166269A (ja) * 1993-12-15 1995-06-27 Tanaka Kikinzoku Kogyo Kk 摺動接点用素材及びその製造方法
JPH08291349A (ja) * 1995-02-24 1996-11-05 Mabuchi Motor Co Ltd 摺動接点材料及びクラッド複合材ならびにそれらからなるコンミテータ及びそのコンミテータを使用した直流小型モータ
JPH0989930A (ja) * 1995-09-27 1997-04-04 Osaka Diamond Ind Co Ltd 電子機器用接触子及びその製造方法
JP2000152567A (ja) * 1998-11-05 2000-05-30 Ryobi Ltd ブラシ
JP2002025346A (ja) * 2000-07-13 2002-01-25 Sumitomo Electric Ind Ltd 導電部材
JP2004129425A (ja) * 2002-10-04 2004-04-22 Denso Corp 電動機およびそれを用いた燃料ポンプ
JP2010200569A (ja) * 2009-02-27 2010-09-09 Hitachi Chem Co Ltd 整流子及びブラシ
WO2010150595A1 (fr) * 2009-06-24 2010-12-29 三洋電機株式会社 Structure stratifiée et son procédé de production

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0778664A (ja) * 1993-09-10 1995-03-20 Hitachi Koki Co Ltd セラミックス整流子の製造方法
JPH07111760A (ja) * 1993-10-08 1995-04-25 Hitachi Ltd 珪化物系セラミックスを用いた整流子
JPH07166269A (ja) * 1993-12-15 1995-06-27 Tanaka Kikinzoku Kogyo Kk 摺動接点用素材及びその製造方法
JPH08291349A (ja) * 1995-02-24 1996-11-05 Mabuchi Motor Co Ltd 摺動接点材料及びクラッド複合材ならびにそれらからなるコンミテータ及びそのコンミテータを使用した直流小型モータ
JPH0989930A (ja) * 1995-09-27 1997-04-04 Osaka Diamond Ind Co Ltd 電子機器用接触子及びその製造方法
JP2000152567A (ja) * 1998-11-05 2000-05-30 Ryobi Ltd ブラシ
JP2002025346A (ja) * 2000-07-13 2002-01-25 Sumitomo Electric Ind Ltd 導電部材
JP2004129425A (ja) * 2002-10-04 2004-04-22 Denso Corp 電動機およびそれを用いた燃料ポンプ
JP2010200569A (ja) * 2009-02-27 2010-09-09 Hitachi Chem Co Ltd 整流子及びブラシ
WO2010150595A1 (fr) * 2009-06-24 2010-12-29 三洋電機株式会社 Structure stratifiée et son procédé de production

Also Published As

Publication number Publication date
JPWO2014010373A1 (ja) 2016-06-20
JP5862776B2 (ja) 2016-02-16

Similar Documents

Publication Publication Date Title
JP5790885B2 (ja) 接点部材及び電動機
JP2015203150A (ja) 成形体の製造方法
JP5862776B2 (ja) 電気接点構造及び電動機
JP4881049B2 (ja) 電気メッキ用コンダクターロール
US20070145853A1 (en) Electrical brush and method for making the same
JP2007224406A (ja) 電界処理用集電ロール
JP2008266763A (ja) 金属電気メッキ及び電解銅箔設備における電解処理用コンダクターロール
JP2012169155A (ja) コネクタ及びそれに用いるローラ接触子
JP5822137B2 (ja) 摺動接点部材
CN113681436A (zh) 一种抛光装置及其抛光方法
JP2015082910A (ja) 摺動接点部材、電動機及び発電機
JP2015088306A (ja) 摺動接点部材、電動機及び発電機
JP2979477B2 (ja) 水素化アモルファスカーボン膜形成方法、該膜を形成した気体動圧軸受、スピンドルモータ及び回転体装置
CN101752942A (zh) 电动机防轴电流的轴承座套
CN109420936A (zh) 硬金属电化学研磨方法
JP2005139472A (ja) 通電ロール装置
JP2007107725A (ja) 電食防止型転がり軸受
JPS614178A (ja) 摺動集電装置
CN105846629A (zh) 一种径向充磁的真空洁净电机
JP2023059380A (ja) コレクタリング及び回転電機
JP2011102646A (ja) 電食防止型転がり軸受
JP2015035346A (ja) 摺動接点部材の組合せ
JP2595647Y2 (ja) ブラシ装置
JP2014143155A (ja) スパイラル集電子
CN116145003A (zh) 一种FeCrNiMn高熵合金材料及其制备方法

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: 13816877

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2014524704

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13816877

Country of ref document: EP

Kind code of ref document: A1