CN101710534B - Reactor unit - Google Patents

Reactor unit Download PDF

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Publication number
CN101710534B
CN101710534B CN2009101731997A CN200910173199A CN101710534B CN 101710534 B CN101710534 B CN 101710534B CN 2009101731997 A CN2009101731997 A CN 2009101731997A CN 200910173199 A CN200910173199 A CN 200910173199A CN 101710534 B CN101710534 B CN 101710534B
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CN
China
Prior art keywords
contact portion
pressure contact
winding coil
reactor unit
electric terminal
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Active
Application number
CN2009101731997A
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Chinese (zh)
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CN101710534A (en
Inventor
柳真介
松尾繁
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Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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Publication of CN101710534A publication Critical patent/CN101710534A/en
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Publication of CN101710534B publication Critical patent/CN101710534B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/16—End pieces terminating in a soldering tip or socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/023—Soldered or welded connections between cables or wires and terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/029—Welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/187—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping combined with soldering or welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

A reactor unit includes a winding coil having aluminum wires wound around an iron core, and a copper-made electric terminal connected to end parts of the winding coil, in which the electric terminal has a pressing and connecting part for pressing and connecting aluminum wires of the winding coil at one end, and a welding part of a nearly flat shape at other end, so that the electrical connection between dissimilar materials is realized at low cost and high reliability.

Description

Reactor unit
Technical field
The present invention relates to the reactor of a kind of use in electric and electronic, more particularly, relate to a kind of reactor unit that between winding coil with aluminum coil coiled and copper cash, is provided with electrical connection arrangement.
Background technology
Japan Patent discloses in communique 1995-22258 number a kind of existing reactor that between winding coil and copper cash, is provided with electrical connection arrangement has been shown, and Fig. 5 is the front view of this existing reactor.
As shown in Figure 5, on iron base 1, be equipped with on made of iron unshakable in one's determination 2, unshakable in one's determination 2 winding coil 4 is housed, the surperficial sintering of winding coil 4 usefulness has aluminum steel 3 coilings of paint film to form, and whole reactor also will carry out dipping lacquer to be handled.Winding coil 4 by material be reason that the aluminum steel 3 of aluminium constitutes be aluminum steel 3 than copper cash cost ratio, aluminum steel is widely used in the winding of reactor etc. in recent years.
During connection, the enamelled coating that will be positioned at earlier on the aluminum steel 3 of winding starting point and destination county of winding coil 4 is partly removed, and aluminum core line 5 usefulness scolding tin 7 are welded on the copper electric terminal 6 of other setting.
In said structure, the input of 8 power supply can be carried out through being inserted on the electric terminal 6 with the lead connection terminals from the outside to the reactor.
But; In the electrical connection arrangement between existing aluminium matter winding coil and copper cash; Can't aluminum steel be fixed on the electric terminal made of copper with common scolding tin,, can produce than problems such as common scolding tin cost height, operating difficultiess so need to use the soldering tin material of aluminum steel special use.
In addition, the heat of winding coil passes on the terminal, when applying thermal stress to electric terminal, because the thermal coefficient of expansion of aluminium and copper is different, just crackle occurs easily at the scolding tin position, causes loose contact, so also exist the problem of reliability aspect.
Summary of the invention
The present invention is intended to solve the problems referred to above that exist in the prior art; It is a kind of at the reactor unit that between winding coil that forms and copper cash, is provided with electric connection part with aluminum coil that its purpose is to provide; The contact site of this reactor unit can not cause loose contact yet under ambient temperature situation jumpy; And low cost of manufacture, reliability is high.
In order to address the above problem, reactor unit of the present invention comprises: with the aluminum coil winding coil that forms and the copper electric terminal that is connected with the end of said winding coil on the iron iron core.Wherein, an end of said electric terminal has with the aluminum steel of said winding coil and compresses the pressure contact portion that is connected, and the other end has the weld part that is slightly plane.
Like this, even can realize that the rapid variation of a kind of ambient temperature can not cause the high reactor unit of loose contact and reliability yet with cheap manufacturing cost.
Description of drawings
Fig. 1 is the sectional view of the reactor unit in one embodiment of the present of invention,
Fig. 2 is the front view of this reactor unit,
Fig. 3 A is the side enlarged drawing of the connecting portion in this reactor unit,
Fig. 3 B is the front enlarged drawing of the connecting portion in this reactor unit,
Fig. 3 C is the 3C-3C sectional view of the connecting portion in this reactor unit,
Fig. 3 D is the 3D-3D sectional view of the connecting portion in this reactor unit,
Fig. 4 is the electrical characteristic table of this reactor unit,
Fig. 5 is for being provided with the front view of the existing reactor of electric connection part between winding coil and copper cash.
Embodiment
With reference to the accompanying drawings one embodiment of the present of invention are elaborated.It is pointed out that simultaneously embodiments of the invention do not have the effect that limits the scope of the invention.
(embodiment)
With reference to Fig. 1～Fig. 4 the reactor unit of present embodiment is described below.The reactor unit of present embodiment is used for suppressing carrying out the high-frequency current in the washing machine of VFC etc., improves power factor, and winding coil has wherein used aluminum steel, and power input part divides and adopts copper cash, between winding coil and copper cash, is provided with electric connection part.
Fig. 1 is the sectional view of the reactor unit in the present embodiment.As shown in Figure 1, the electromagnetism sheet metal is become English alphabet " E " word shape by the punch process die stamping after range upon range of/welding back forms E shape iron core 9, there is the winding coil 10 of the aluminum coil coiled of paint film to be embedded into the E shape unshakable in one's determination 9 from the top by surperficial sintering.Then, the electromagnetism sheet metal is become alphabetical " I " shape by the punch process die stamping after the I shape iron core 11 that range upon range of/welding back forms is set on the E shape unshakable in one's determination 9, again the contact side of periphery is welded, fixed with welding material 12.
In addition, can be fixed on screw on the product such as washing machine in order to make E shape unshakable in one's determination 9, E shape unshakable in one's determination 9 is soldered, is fixed on the base 13 made of iron through welding material 12.
And, be used to realize the insulating tape 15 that insulate on the peripheral part of winding coil 10 is also reeled.
When whole welding after fixedly operation finishes, also to reactor integral body be carried out dipping lacquer and handle.The purpose that dipping lacquer is handled is to get rusty, suppress electromagnetic noise, prevent that the coil insulation adhesive tape from making moist etc. for the iron core that prevents E shape unshakable in one's determination 9 and I shape unshakable in one's determination 11.
Fig. 2 is the front view of this reactor unit.As shown in Figure 2; E shape unshakable in one's determination 9 and I shape unshakable in one's determination 11 constitute iron unshakable in one's determination 16 on the winding coil 10 that is wound into by aluminum steel 18 is installed, and, remove at the start-up portion of the winding coil 10 that aluminum steel 18 is wound into and the terminal point enamelled coating on partly; After making the aluminum core line 19 of aluminum steel 18 approximately expose 10mm; Crimping (being that compression type connects, down together) is fixed on the pressure contact portion 25 of electric terminal 17 made of copper, constitutes reactor unit 14 with this.
In addition, at the opposite side (opposite one side) of electric terminal 17, be provided with and be used for to reactor power supply and have the copper lead 21 of connector 22, the heart yearn of copper lead 21 is fixed on the weld part 17c that is slightly plane in the electric terminal 17 through the spot-welded on mode.
At the portion that is welded to connect 20 places of aluminum core line 19 and copper electric terminal 17,, can produce potential difference owing to be that aluminium and these two kinds of different metallic of copper interconnect and form.Thereby, can cause the galvanic corrosion phenomenon when adhering to water or moisture, cause contact resistance to increase.So, to be coated with through brush etc. at the contact site of different metal at least and apply silica gel resin 23, contact site is hidden fully, thereby can keep suitable being electrically connected.
In addition, put the effect that the heat-shrinkable tube 24 that can when high temperature shines, shrink plays insulating tape again, can further improve waterproof effect in the periphery of the portion of being welded to connect 20.
Fig. 3 is the detailed maps of connecting portion.Wherein, Fig. 3 A is the side-looking enlarged drawing of connecting portion, and Fig. 3 B is the enlarged drawing of facing of connecting portion, and Fig. 3 C is the 3C-3C sectional view of Fig. 3 A, and Fig. 3 D is the 3D-3D sectional view of Fig. 3 A.
Shown in Fig. 3 A and Fig. 3 B, the aluminum core line 19 of aluminum steel 18 is crimped on 17 last times of electric terminal, be formed with first lower pressure contact portion 17a of crimp height and the second higher pressure contact portion 17b of crimp height, be the two-part crimping.
Shown in Fig. 3 C and Fig. 3 D, demonstrated the first lower pressure contact portion 17a of crimp height among the 3C-3C of cross section, its crimp height is Δ A; Demonstrated the second higher crimping part 17b of crimp height among the 3D-3D of cross section, its crimp height is Δ B.In order to make the relation of crimp height formation Δ A＜Δ B, need in the course of processing, change the crimp height of the end 30 of terminal.
In the first pressure contact portion 17a at cross section 3C-3C place, terminal ends 30 is curved to the degree that compression takes place inner aluminum core line 19.Relative therewith, in the second pressure contact portion 17b at cross section 3D-3D place, terminal ends 30 is curved to inner aluminum core line 19 and does not produce the degree of plastic deformation.
In general, aluminum steel is different with copper cash, and case hardness is comparatively soft, receive stress during crimping after aluminium itself can extend, cause plastic deformation, so crimping should be kept in touch stablizing of resistance fixedly the time and guaranteed that again tensile strength is very difficult.For head it off; In the present embodiment crimp height is separated different kinds; The first pressure contact portion 17a through cross section 3C-3C place keeps in touch resistance stabilization; The second pressure contact portion 17b through cross section 3D-3D place guarantees tensile strength simultaneously, carries out different crimping according to the different effects that in connection, takes place.
Be in an opposite side with aluminum steel 18 in the electric terminal 17 and be provided with weld part 17c, weld part 17c is used for through spot welding copper lead 21 being welded on the electric terminal 17.
Owing to all be that copper material welds in weld part 17c, there is not coefficient of thermal expansion differences, the performance of the portion that connects with welding of institute 20 heatproof degree variation is very high.
Fig. 4 is the electric characteristic figure of the reactor unit that demonstrates among the embodiment.Transverse axis in this electric characteristic figure is represented the crimp height of pressure contact portion, and the longitudinal axis is represented the contact resistance value of pressure contact portion.As shown in Figure 4, carry out under the situation of crimping at aluminum steel for example Φ 2.0mm, crimp height be 1.8mm in the scope of 2.3mm, contact resistance value is stabilized in below about 0.2m Ω; When crimp height reaches 2.3mm when above, contact resistance will increase at leisure.
In other words, when the serious compression of aluminum core line quilt, when producing plastic deformation, though contact resistance is stabilized in than low value, tensile strength is also low.
In addition, crimp height be 1.8mm in the scope of 2.3mm, tensile strength is grow at leisure; Crimp height be 2.3mm in the scope of 2.6mm, tensile strength rises gradually and is stabilized in 300N/m 2More than.
Therefore,, adopt the crimp height of 1.9mm to 2.1mm to carry out crimping, simultaneously,, adopt the crimp height of 2.4mm to 2.6mm to carry out crimping for the second pressure contact portion 17b and fix in order to ensure tensile strength for the first pressure contact portion 17a in order to stablize contact resistance.Through the method, can satisfy the requirement of contact resistance and tensile strength two aspects simultaneously.
As stated; In the reactor list 14 of present embodiment; Be crimped on the electric terminal 17 that copper material processes through aluminum steel 18 different materials is fixed winding coil 10; And equally also be on the copper electric terminal 17 with copper cash 21 through spot-welded on, can not come in contact the reactor unit bad, that reliability is high even realized that a kind of low cost of manufacture and ambient temperature sharply change yet.
In addition, through when the first pressure contact portion 17a and the second pressure contact portion 17b are carried out crimping with the crimp height change, can make the tensile strength of pressure contact portion 25 and contact resistance keep stable simultaneously.Therefore, in the long-term process of using, also can keep good performance, further improve its reliability.
Moreover; Through on the contact-making surface of aluminium matter and copper material, carrying out water-proofing treatment with the silica gel resin; Or put the heat-shrinkable tube that after high temperature irradiation, can shrink and carry out water-proofing treatment, can prevent to produce galvanic corrosion between the metal not of the same race, further improve its reliability.

Claims (3)

1. reactor unit is characterized in that comprising: with the aluminum coil winding coil that forms and the copper electric terminal that is connected with the end of said winding coil on the iron iron core,
Wherein, an end of said electric terminal has with the aluminum steel of said winding coil and compresses the pressure contact portion that is connected, and the other end has the weld part that is slightly plane,
Pressure contact portion in the said electric terminal has first pressure contact portion and second pressure contact portion, and said first pressure contact portion is different with the crimp height of said second pressure contact portion,
When the aluminum core line with said aluminum steel is crimped on the said electric terminal, carry out the two-part crimping of high said second pressure contact portion of low said first pressure contact portion of crimp height and crimp height.
2. reactor unit as claimed in claim 1 is characterized in that:
Above-mentioned pressure contact portion carries out water-proofing treatment through the silica gel resin.
3. reactor unit as claimed in claim 1 is characterized in that:
Above-mentioned pressure contact portion is carried out water-proofing treatment by the heat-shrinkable tube covering.
CN2009101731997A 2008-09-19 2009-09-16 Reactor unit Active CN101710534B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008240483A JP4631951B2 (en) 2008-09-19 2008-09-19 Electrical connection means for washing machine between wound coil and copper wire
JP2008-240483 2008-09-19

Publications (2)

Publication Number Publication Date
CN101710534A CN101710534A (en) 2010-05-19
CN101710534B true CN101710534B (en) 2012-05-30

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CN2009101731997A Active CN101710534B (en) 2008-09-19 2009-09-16 Reactor unit

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EP (1) EP2166546B1 (en)
JP (1) JP4631951B2 (en)
CN (2) CN201508754U (en)
RU (1) RU2422934C2 (en)
TW (1) TWI431647B (en)

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CN101710534A (en) 2010-05-19
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EP2166546A2 (en) 2010-03-24
RU2422934C2 (en) 2011-06-27

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