WO2015045515A1 - Structure de connexion de borne de composant électrique - Google Patents

Structure de connexion de borne de composant électrique Download PDF

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Publication number
WO2015045515A1
WO2015045515A1 PCT/JP2014/066125 JP2014066125W WO2015045515A1 WO 2015045515 A1 WO2015045515 A1 WO 2015045515A1 JP 2014066125 W JP2014066125 W JP 2014066125W WO 2015045515 A1 WO2015045515 A1 WO 2015045515A1
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WO
WIPO (PCT)
Prior art keywords
terminal
heater
connector
melted
connection structure
Prior art date
Application number
PCT/JP2014/066125
Other languages
English (en)
Japanese (ja)
Inventor
哲弥 西村
Original Assignee
日本サーモスタット株式会社
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 日本サーモスタット株式会社 filed Critical 日本サーモスタット株式会社
Publication of WO2015045515A1 publication Critical patent/WO2015045515A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • B23K26/323—Bonding taking account of the properties of the material involved involving parts made of dissimilar metallic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/38—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
    • H01R4/58—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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0221—Laser welding

Definitions

  • the present invention relates to a terminal connection structure for an electrical component suitable for use in the case where one terminal is resin-molded when welding a terminal made of a different metal.
  • a heater is incorporated to operate the on-off valve of the device regardless of the cooling water temperature, and the heater is installed as necessary. It is generally employed to control opening and closing of the on-off valve by controlling energization.
  • this type of electric control type thermostat has a thermoelement enclosing wax or the like so as to face the inside of a device housing that forms a cooling water passage as shown in Patent Document 1, for example, and heat is generated depending on the cooling water temperature.
  • the movement of the axis direction of expansion and contraction is transmitted to the valve body that opens and closes the cooling water passage, thereby controlling the opening and closing of the cooling water passage.
  • a rod-shaped heater is exposed from the outside of the device housing into the thermo element, and the wax can be selectively thermally expanded by the heat effect of the rod-shaped heater.
  • terminal terminals for external connection for connecting the heater to the outside of the apparatus are drawn out of the apparatus housing. That is, the terminal terminal has a resin-molded connector member for fixing the terminal terminal to the apparatus housing side.
  • the connector member is configured such that a part of the connector terminal is exposed to the outside, and the heater terminal on the heater side is connected to the connector terminal.
  • the above-described heater terminal is generally made of a high-melting point metal such as nickel or kovar, and the connector terminal is made of a low-melting point metal such as brass. These terminals are welded, for example, by resistance welding. Has been.
  • Patent Document 2 in a joint in which a gap is provided between an upper member having a high melting point and a lower member having a low melting point, only the upper member is heated and melted by laser irradiation, and heat transfer from the upper member is performed with the lower member.
  • a laser bonding method for melting the bonding surface is disclosed.
  • This invention is made
  • the terminal connection structure for an electrical component includes a first terminal made of a refractory metal and a second terminal made of a low melting metal.
  • a molded resin member is attached to the anti-joining surface of the second terminal, and the first terminal is on the connection surface of the second terminal.
  • a non-contact body is contacted with a predetermined gap, laser irradiation is performed from the anti-joint surface side of the first terminal, the first terminal is heated and melted, and heat is transferred from the first terminal. It is characterized in that both terminals are welded together by melting the joint surface of the second terminal.
  • the terminal connection structure for electrical parts according to the present invention is the electrical component terminal connection structure according to claim 1, wherein the first terminal is melted and melted by heating and melting by laser irradiation from the anti-joint surface side. Both terminals are joined by joining the first terminal to the joint surface of the second terminal by its own weight.
  • the terminal connection structure for an electrical component according to the present invention is the electrical component type thermostat according to claim 1 or 2, wherein the first component is a heater of a heater in the thermostat.
  • the second terminal is a connector terminal in a connector for externally connecting the heater.
  • the first terminal made of a refractory metal is made of, for example, nickel, cobalt, an alloy thereof, or the like.
  • the second terminal made of a low melting point metal is made of, for example, brass.
  • the expressions high melting point and low melting point are relative expressions of the melting points of the two metal materials to be joined, and do not specify a certain temperature range.
  • the metal material is not limited to the above example.
  • the resin member by molding is attached to the antibonding surface side of the second terminal, and a part of the resin member surrounds the periphery of the bonding surface of the second terminal. Even when the wall portion is formed, the first terminal is brought into contact with the second terminal in a non-contact state, and laser irradiation is performed from the anti-joint surface side of the first terminal. By doing. Both terminals can be welded together.
  • a heater terminal made of a high melting point metal and a heater terminal made of a low melting point metal When the connector-side terminal molded with resin so that the resin member exists on the opposite surface in contact with the heat is melted by laser irradiation only on the heater terminal side, and heat transfer from the heater terminal Both terminals can be welded together by melting the joint surface.
  • both terminals are in a non-contact state, but the molten heater terminal comes into contact with the connector terminal by its own weight and is joined.
  • the laser irradiation only needs to be such that only the heater terminal can be heated and melted, and there is no limitation on just focus or defocus. Further, the intensity and time of laser irradiation may be appropriately selected depending on the properties of the target metal.
  • the first and second terminals made of different metals are brought into a non-contact state with a predetermined interval from the anti-joint surface side of the first terminal.
  • the first terminal is melted, and the second terminal is melted by heat transfer from the first terminal, so that both terminals are heated and melted and welded.
  • the first terminal (heater terminal) By irradiating only the first terminal (heater terminal) with laser, the first terminal (heater terminal), the second terminal (connector side terminal; hereinafter referred to as connector terminal) are attached to this. Even if the resin member is arranged so as to overlap in the laser irradiation direction, the thermal influence on the peripheral member of the irradiated member is small, and the resin member near the lower plate does not deteriorate. 2. Since the sealing property of the product can be maintained, the effect of preventing cooling water leakage can be exhibited.
  • the terminal evaporates due to melting and the thickness is not reduced. Therefore, a sufficient bonding area can be secured and the bonding strength is improved.
  • the thermal effect on the peripheral portion to be joined is small, and the thickness of the resin member in the vicinity of the joining surface can be reduced and the weight can be reduced. Even if the resin member is thinned, the through hole is not opened in the resin member, so that it is not affected by outside air. Also, dust does not enter.
  • both terminals can be melted and welded by laser irradiation from the back side of one terminal
  • the other terminal is molded and has a wall portion surrounding the terminal, for example, an electrode for spot welding Even in the case where the periphery of the joint is so narrow that it does not enter, welding can be performed easily and reliably.
  • FIG. 1 shows an embodiment of an electric component terminal connection structure according to the present invention, and is a cross-sectional view of a main part of an electronically controlled thermostat.
  • FIG. It is a schematic perspective view for demonstrating the connection part of the terminal connector and heater in the A section of FIG.
  • FIG. 1 to 4 show an embodiment of an electric component terminal connection structure according to the present invention.
  • the present invention relates to the connector terminal 4 of the connector portion 3 in the terminal terminal 2 for external connection in the electric control type thermostat 1 and the heater for electric temperature control in the thermostat 1 (16 described later). The case where it is applied to the joint portion with the heater terminal 6 in FIG.
  • the electric control type thermostat 1 to which the present invention is applied has a conventionally well-known configuration as apparent from Patent Document 1 described above, and a detailed description thereof is omitted here.
  • 10 is a device housing assembled to a device body that forms a cooling water passage (not shown)
  • 11 is a main valve body that opens and closes a cooling water passage 12 formed in the device housing 10
  • 13 is A return spring that biases the main valve body 11.
  • Reference numeral 15 denotes a thermo element in which the main valve body 11 is assembled and fixed in a part of the axial direction, and includes a wax inside and a piston (both not shown) that moves forward and backward in the axial direction by its thermal expansion and contraction. Has been.
  • thermo element 15 Inside the thermo element 15, a rod-like heater 16 extending from a connector mounting portion opened in the axial direction of the apparatus housing 10 is inserted, and by controlling the heat generation temperature of the heater 16, the wax is Regardless of the cooling water temperature, it is configured so that it can expand and contract.
  • FIG. 1 in connecting the first terminal (heater terminal 6) made of a high melting point metal and the second terminal (connector terminal 4) made of a low melting point metal, FIG.
  • a molded resin member (connector member 3) is attached to the anti-joining surface of the connector terminal 4, and the heater terminal 6 has a predetermined gap GAP on the connection surface of the connector terminal 4.
  • the contact is made with a non-contact body, and laser irradiation (indicated by an arrow in FIG. 4) is performed from the side opposite to the surface of the heater terminal 6 to heat and melt the heater terminal 6 and to transmit from the heater terminal 6. It is characterized in that both terminals 4 and 6 are welded and connected by melting the joint surface of the connector terminal 4 with heat.
  • the heater terminals 6 are heated and melted by laser irradiation from the side opposite to the joint surface of the heater terminal 6, and the melted and melted heater terminal 6 is joined to the joint surface of the connector terminal 4 by its own weight. 6 are joined.
  • the left side shows a state in which a gap GAP is open between the connector terminal 4 and the heater terminal 6 before laser irradiation
  • the right side in FIG. 4 shows that the heater terminal 6 is melted by laser irradiation.
  • the state joined to the connector terminal 4 with dead weight is shown.
  • the heater terminal 6 made of the above-described refractory metal is made of, for example, nickel, cobalt, or an alloy thereof.
  • the connector terminal 4 made of a low melting point metal is made of, for example, brass.
  • the expressions high melting point and low melting point are relative expressions of the melting points of the two metal materials to be joined, and do not specify a certain temperature range. Further, the metal material is not limited to the above example.
  • the connector terminal 4 as described above is generally plated with a plating material such as Sn, Ag, Au or the like for the purpose of preventing oxidative degradation. Regardless of the type of plating or the presence or absence of the plating process, the heater is used. The welding connection with the terminal 6 in a good state is possible.
  • the resin member (connector member) by molding is attached to the anti-joining surface side of the connector terminal 4, and this connector
  • a part of the member 3 has a wall portion 8 formed so as to surround the periphery of the joint surface of the connector terminal 4, as shown in FIG. 2 and FIG.
  • the heater terminal 6 is brought into contact with the connector terminal 4 in a non-contact state with a predetermined gap, and laser irradiation is performed from the anti-joining surface side of the heater terminal 6. Both terminals 4 and 6 can be simply and reliably welded together.
  • the molten heater terminal 6 comes into contact with the connector terminal 4 by its own weight and is joined. Further, the laser irradiation may be performed to such an extent that only the heater terminal 6 can be heated and melted. In this case, the intensity of laser irradiation, the laser output, the spot diameter, and the time may be appropriately selected depending on the properties, thickness, width, etc. of the target metal. It has been confirmed by experiments that the width of the heater terminal 6 is good within twice the spot diameter.
  • the heater terminal 6 by irradiating only the heater terminal 6 with the laser, the heater terminal 6, the connector side terminal (hereinafter referred to as the connector terminal 4), and the connector member 3 attached thereto are overlapped in the laser irradiation direction.
  • the thermal influence on the peripheral members of the irradiated member is small, and the connector member 3 side located on the lower side does not deteriorate. Accordingly, since the connector member 3 is not affected by heat such as welding, the sealing performance of the product can be maintained, and therefore, an effect of preventing cooling water leakage can be exhibited.
  • the terminals 4 and 6 are very little evaporated by dissolution and the thickness is not reduced. Therefore, a sufficient bonding area can be secured and the bonding strength is improved. In addition, there is no problem that damages the electrical connection such as a short circuit. In addition, the thermal influence on the peripheral portion to be joined is small, and the thickness of the connector member 3 in the vicinity of the joining surface can be reduced and the weight can be reduced. Further, even if the connector member 3 is thinned, there is an advantage that a through hole is not opened in the member, so that it is not affected by outside air and foreign matter such as dust does not enter.
  • both terminals 4 and 6 can be melted and welded by laser irradiation from the back side of one terminal 6, the other terminal 6 is molded and has a wall portion 8 surrounding the periphery of the terminal. Even if it exists, it can weld-join easily and reliably.
  • reference numeral 9 in FIG. 4 is a holding jig for pressing the connector terminal 4 during welding, and can be freely used as necessary.
  • this invention is not limited to the structure demonstrated by embodiment mentioned above, and comprises the junction part of the connector terminal 4 of the connector part of the terminal terminal 2 and the heater terminal 6 in the electric control type thermostat 1 as an electrical component.
  • the shape, structure, and the like of each part can be appropriately modified and changed.
  • the electric component to which the present invention can be applied is not limited to the connector portion of the electric control type thermostat 1 described above.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Temperature-Responsive Valves (AREA)
  • Laser Beam Processing (AREA)

Abstract

La présente invention est conçue de manière que, lorsqu'une connexion doit être établie entre une première borne (6) comprenant un métal à point de fusion élevé et une seconde borne (4) comprenant un métal à point de fusion bas et ayant un élément (3) de résine moulé fixé au côté en regard de sa surface de jonction, la première borne (6) soit couplée dans un état sans contact à la surface de connexion de la seconde borne (4) dans un espace prescrit, et un faisceau laser est dirigé à partir du côté de la première borne (6) en regard de la surface de jonction pour faire fondre la première borne (6) sous l'action de la chaleur, ce qui amène la surface de jonction de la seconde borne (4) à fondre également en raison de la chaleur transmise par la première borne (6), soudant ainsi ensemble les deux bornes.
PCT/JP2014/066125 2013-09-25 2014-06-18 Structure de connexion de borne de composant électrique WO2015045515A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013198136A JP2015065019A (ja) 2013-09-25 2013-09-25 電気部品の端子接続構造
JP2013-198136 2013-09-25

Publications (1)

Publication Number Publication Date
WO2015045515A1 true WO2015045515A1 (fr) 2015-04-02

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ID=52742673

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PCT/JP2014/066125 WO2015045515A1 (fr) 2013-09-25 2014-06-18 Structure de connexion de borne de composant électrique

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JP (1) JP2015065019A (fr)
WO (1) WO2015045515A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004042053A (ja) * 2002-07-09 2004-02-12 Toyota Motor Corp 異種金属材料の接合方法
JP2005155831A (ja) * 2003-11-27 2005-06-16 Nippon Thermostat Co Ltd サーモスタット装置及びそのピストン
JP2010069516A (ja) * 2008-09-19 2010-04-02 Mitsubishi Electric Corp 電子機器の接続構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004042053A (ja) * 2002-07-09 2004-02-12 Toyota Motor Corp 異種金属材料の接合方法
JP2005155831A (ja) * 2003-11-27 2005-06-16 Nippon Thermostat Co Ltd サーモスタット装置及びそのピストン
JP2010069516A (ja) * 2008-09-19 2010-04-02 Mitsubishi Electric Corp 電子機器の接続構造

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Publication number Publication date
JP2015065019A (ja) 2015-04-09

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