WO2020110295A1 - Electric contactor and method of manufacturing same - Google Patents

Electric contactor and method of manufacturing same Download PDF

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Publication number
WO2020110295A1
WO2020110295A1 PCT/JP2018/044211 JP2018044211W WO2020110295A1 WO 2020110295 A1 WO2020110295 A1 WO 2020110295A1 JP 2018044211 W JP2018044211 W JP 2018044211W WO 2020110295 A1 WO2020110295 A1 WO 2020110295A1
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WO
WIPO (PCT)
Prior art keywords
bonding material
contact
base metal
rivet
bonding
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Application number
PCT/JP2018/044211
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French (fr)
Japanese (ja)
Inventor
紀久 松本
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三菱電機株式会社
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2018/044211 priority Critical patent/WO2020110295A1/en
Priority to CN201880099744.XA priority patent/CN113168971B/en
Priority to JP2019517441A priority patent/JP6580290B1/en
Publication of WO2020110295A1 publication Critical patent/WO2020110295A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier

Definitions

  • the present invention relates to an electric contactor in which contacts are joined to a base metal and a method for manufacturing the same.
  • an electric contactor including a base metal, a bonding material provided on the base metal, and a contact bonded to the base metal via the bonding material is known (see, for example, Patent Document 1). Further, conventionally, a base metal having a through hole formed in the plate thickness direction, a joining material provided on the base metal, a leg portion inserted into the through hole, and a collar portion joined to the base metal via the joining material. There is known an electric contactor including a rivet having a rivet and a contact provided on a collar portion of the rivet (for example, see Patent Document 2).
  • the peripheral portion of the bonding material may be separated from the base metal due to the use of the electric contactor. In this case, there is a problem that the joint between the contact and the base metal is deteriorated.
  • the peripheral edge portion of the contact may be separated from the collar portion of the rivet by using the electric contactor. In this case, there has been a problem that the joint between the contact point and the base metal via the rivet is deteriorated.
  • the present invention has been made to solve the above problems, and an object thereof is to provide an electric contactor capable of suppressing deterioration of the joint between a contact and a base metal and a manufacturing method thereof. To do.
  • the electrical contactor according to the present invention is formed into a plate shape and has a base metal having through holes formed in the plate thickness direction, a bonding material provided on the first surface of the metal base, and a base metal via the bonding material.
  • the first brim portion provided inside the bonding material, facing the first surface, and integrally formed with the first brim portion and the leg portion and the leg portion inserted into the through hole.
  • a rivet having a second collar portion facing the second surface of the base metal, and the joining material is pressed against the first surface by the rivet.
  • a method of manufacturing an electric contact according to the present invention includes a first bonding material applying step of applying a first bonding material to a first surface of a plate-shaped base metal, and a step of forming the base metal after the first bonding material applying step.
  • the rivet leg inserting step of inserting the rivet leg into the formed through hole and stacking the first rivet first collar on the first joining material, and the rivet leg inserting step, after which the first rivet and first joining are performed.
  • a contact is placed on the bonding material, the contact, the first bonding material, and the second bonding material are compressed in the stacking direction and heated, and the contact, the rivet, and the A contact bonding step of bonding the base metal to each other, and a leg deforming step of deforming the leg portion after the contact bonding step to form a second brim portion facing the second surface of the base metal on the rivet,
  • the bonding material is pressed against the first surface by the rivet.
  • FIG. 3 is a flowchart showing a method of manufacturing the electric contactor of FIG. 1. It is a figure which shows the 1st joining material application process of FIG. It is a figure which shows the rivet leg part insertion process of FIG. It is a figure which shows the 2nd joining material application process of FIG. It is a figure which shows the contact bonding process of FIG. It is a figure which shows the leg deformation
  • Embodiment 1. 1 is a sectional view showing an electric contactor according to Embodiment 1 of the present invention.
  • FIG. 2 is an enlarged view showing part A of FIG.
  • the electric contactor according to Embodiment 1 of the present invention includes a base metal 1, a joining material 2 provided on the base metal 1, a rivet 3 joined to the base metal 1 via the joining material 2, and a joining material. And a contact point 4 joined to the base metal 1 via 2.
  • the base metal 1 is made of a copper alloy whose main component is Cu (copper).
  • the base metal 1 is formed in a plate shape.
  • the base metal 1 is formed with a through hole 11 penetrating in the plate thickness direction of the base metal 1.
  • One surface of the base metal 1 is a first surface 12 and the other surface is a second surface 13.
  • the joining material 2 is overlaid on the first surface 12 of the base metal 1.
  • a sintered silver bonding material paste containing Ag nanoparticles that are Ag (silver) particles is used as the bonding material 2.
  • the Ag particles are included in the metal particles.
  • the central particle diameter of Ag nanoparticles is 50 nm.
  • the rivet 3 faces the first surface 12 and has a first flange portion 31 provided inside the bonding material 2, and a leg portion 32 formed integrally with the first flange portion 31 and inserted into the through hole 11.
  • the second flange portion 33 is formed integrally with the leg portion 32 and faces the second surface 13.
  • the area of the first flange portion 31 is larger than the area of the through hole 11. Therefore, the first flange portion 31 is not inserted into the through hole 11.
  • the area of the second flange portion 33 is larger than the area of the through hole 11. Therefore, the second flange 33 is not inserted into the through hole 11.
  • the second flange 33 pushes the base metal 1 toward the bonding material 2.
  • the compressive force P acts on the bonding material 2.
  • the joining material 2 is pressed against the first surface 12 by the rivets 3.
  • Contact point 4 contains a main component and an additive.
  • the main component of the contact 4 is Ag.
  • the additives of the contact 4 are In (indium) oxide and Sn (tin) oxide.
  • the contact 4 contains about 1 to 30 wt% of In oxide and Sn oxide.
  • FIG. 3 is a flowchart showing a method for manufacturing the electric contactor of FIG.
  • step S1 the first bonding material coating step is performed.
  • FIG. 4 is a diagram showing the first bonding material applying step of FIG.
  • the first bonding material 21 is applied around the through hole 11 on the first surface 12 of the base metal 1.
  • the first bonding material 21 is a part of the bonding material 2.
  • the amount of the first bonding material 21 is 1/3 of the amount of the bonding material 2.
  • the dimension of the first bonding material 21 in the thickness direction is about 50 ⁇ m.
  • a screen printing machine and a screen printing mask are used in the first bonding material application step. By using the screen printing machine and the screen printing mask, the first bonding material 21 is applied only to the set region of the base metal 1.
  • step S2 a first heat drying step is performed in step S2.
  • the organic solvent contained in the first bonding material 21 is removed.
  • the first heat drying step can be omitted.
  • FIG. 5 is a figure which shows the rivet leg part insertion process of FIG.
  • the leg 32 of the rivet 3 is inserted into the through hole 11 of the base metal 1 from the first surface 12 side, and the first flange 31 of the rivet 3 is overlaid on the first joining material 21.
  • a part of the leg portion 32 of the rivet 3 is projected in the direction away from the first surface 12 with respect to the second surface 13. Since the organic solvent contained in the first bonding material 21 has been removed in the first heat drying step, the first bonding material 21 forms the first brim portion 31 of the rivet 3 and the base metal 1 in the rivet leg insertion step. Crushing between the two is suppressed.
  • FIG. 6 is a diagram showing the second bonding material applying step of FIG.
  • the second bonding material 22 is applied to the first brim portion 31 and the first bonding material 21 so that the first brim portion 31 is interposed between the first bonding material 21 and the second bonding material 22. To place.
  • the second joint material 22 is a part of the joint material 2.
  • the amount of the second bonding material 22 is 2 ⁇ 3 of the amount of the bonding material 2.
  • the second bonding material 22 is a portion of the bonding material 2 excluding the first bonding material 21.
  • the screen printing machine and the screen printing mask are used as in the first bonding material applying step.
  • the second bonding material 22 is applied only to the respective set areas of the first flange portion 31 and the first bonding material 21.
  • the coating amount of the second bonding material 22 is changed by changing the plate thickness of the screen printing plate.
  • step S5 a second heat drying step is performed in step S5.
  • the organic solvent contained in the bonding material 2 is removed.
  • the bonding material 2 is heated to 80° C. for 30 minutes.
  • FIG. 7 is a diagram showing the contact bonding step of FIG.
  • the contact 4 is stacked on the second bonding material 22, and the contact 4, the first bonding material 21, and the second bonding material 22 are compressed in the stacking direction and heated to bond the first bonding material 21 and the second bonding material.
  • the joining material 2 made of the material 22 and the contact 4 are joined.
  • the work of stacking the contact points 4 on the second bonding material 22 is automatically performed by a mounting device having a positioning camera and a mounting collet.
  • the mounting device identifies each of the position of the contact 4 and the position of the second bonding material 22 by using the image captured by the alignment camera, and determines the position where the contact 4 is overlapped with the second bonding material 22. To do.
  • the mounting device heats the mounting collet holding the contact 4 to about 150° C. and presses the contact 4 with the second bonding material 22 at a pressure of about 500 Pa. Press on.
  • the adhesive solvent contained in the second bonding material 22 is volatilized, and the contact 4 and the second bonding material 22 are bonded to each other.
  • the work of compressing and heating the contact 4, the first joining material 21, and the second joining material 22 in the stacking direction is performed by the pair of joining collets 5.
  • one joining collet 5 is applied to the contact 4 and the other joining collet 5 is applied to the leg portion 32. ..
  • the bonding collet 5 is heated to 250° C., and at the same time, the bonding collet 5 is used at a pressure of 10 MPa.
  • the contacts 4 and the legs 32 are compressed in the stacking direction for 10 minutes.
  • the first bonding material 21 and the second bonding material 22 are integrated, and the contact points 4 and the bonding material 2 are bonded to each other.
  • FIG. 8 is a figure which shows the leg deformation process of FIG.
  • the leg deforming step the leg 32 is deformed to form the second brim portion 33 facing the second surface 13 on the rivet 3.
  • the rivet 3 is fixed to the base metal 1 by caulking.
  • the leg portion 32 is compressed in the stacking direction, and the second collar portion 33 facing the second surface 13 is formed on the rivet 3.
  • the contact 4 and the leg 32 are compressed in the stacking direction for 10 minutes at a pressure of 30 MPa using the pair of joining collets 5.
  • the second collar 33 is formed on the rivet 3 by the leg deforming process.
  • the compressive force P that acts on the portion of the bonding material 2 that overlaps the peripheral portion of the contact 4 remains.
  • the portion of the bonding material 2 that is overlapped with the peripheral portion of the contact 4 is pressed against the first surface 12. Therefore, the bonding strength between the contact 4 and the bonding material 2 is improved, and peeling of the contact 4 from the base metal 1 is suppressed. As a result, the reliable life of the electrical contact is extended.
  • the contact 4 is bonded to the base metal 1 via the bonding material 2. Therefore, diffusion bonding is formed at the interface between the contact 4 and the bonding material 2.
  • the bonding force between the contact 4 and the bonding material 2 is determined by the mechanical stress and the heating temperature applied from the outside when the contact 4 and the bonding material 2 are bonded. Therefore, as the electric contactor is used, the bonding force between the contact 4 and the bonding material 2 gradually decreases.
  • the joining force between the contact points 4 and the joining material 2 is the weakest.
  • a peeling phenomenon is likely to occur between the peripheral portion and the portion of the bonding material 2 that is overlapped with the peripheral portion of the contact 4.
  • the electric contactor includes the contact 4 joined to the base metal 1 via the joining material 2 and the rivet 3.
  • the rivet 3 faces the first surface 12 and is formed integrally with the first flange portion 31, the first flange portion 31 provided inside the bonding material 2, and the leg portion 32 and the leg portion 32 inserted into the through hole 11.
  • the base 32 has a second flange 33 that is integrally formed with the base 32 and faces the second surface 13 of the base metal 1.
  • the joining material 2 is pressed against the first surface 12 by the rivets 3.
  • the peripheral edge portion of the bonding material 2 is suppressed from being separated from the base metal 1.
  • the deterioration of the joint between the contact 4 and the base metal 1 can be suppressed.
  • the part of the bonding material 2 that is overlapped with the peripheral edge of the contact 4 is pressed against the first surface 12 by the rivet 3.
  • a force acts on the peripheral portion of the contact 4 in a direction away from the bonding material 2.
  • the portion of the bonding material 2 overlapped with the peripheral edge of the contact 4 is pressed against the first surface 12 by the rivet 3, so that the portion of the bonding material 2 overlapped with the peripheral edge of the contact 4 becomes a base. It is possible to suppress separation from Gold 1. As a result, the deterioration of the joint between the contact 4 and the base metal 1 can be suppressed.
  • the peripheral edge of the first flange 31 presses the bonding material 2 toward the contact 4. Therefore, the bonding strength between the peripheral portion of the contact 4 and the portion of the bonding material 2 overlapped with the peripheral portion of the contact 4 can be increased.
  • the leg portion 32 is deformed to form the second flange portion 33 facing the second surface 13 of the base metal 1 on the rivet 3.
  • the joining material 2 is pressed against the first surface 12 by the rivets 3.
  • the peripheral edge portion of the bonding material 2 is suppressed from being separated from the base metal 1.
  • the deterioration of the joint between the contact 4 and the base metal 1 can be suppressed.
  • the bonding material 2 contains Ag fine particles.
  • the main component of the contact 4 is Ag, and the additive of the contact 4 is the oxide of In and the oxide of Sn.
  • the bonding material 2 contains Cu nanoparticles that are Cu fine particles. Cu fine particles are included in the metal fine particles.
  • the main component of the contact 4 is Cu, and the additive of the contact 4 is W (tungsten).
  • the contact 4 contains about 1 to 40 wt% of W. Other configurations are similar to those of the first embodiment.
  • the joining collet 5 in the contact joining step, is heated to 250° C., and at the same time, the joining collet 5 is used to compress the contacts 4 and the leg portions 32 in the stacking direction for 10 minutes at a pressure of 10 MPa. ..
  • the joining collet 5 in the contact joining step, is heated to 280° C., and at the same time, the joining collet 5 is used to compress the contacts 4 and the leg portions 32 in the stacking direction at a pressure of 20 MPa for 10 minutes.
  • the other manufacturing method of the electric contact is similar to that of the first embodiment.
  • the electric contact according to the second embodiment of the present invention includes the contact 4 joined to the base metal 1 via the joining material 2 and the rivet 3.
  • the rivet 3 faces the first surface 12 and is formed integrally with the first flange portion 31, the first flange portion 31 provided inside the bonding material 2, and the leg portion 32 and the leg portion 32 inserted into the through hole 11.
  • the base 32 has a second flange 33 that is integrally formed with the base 32 and faces the second surface 13 of the base metal 1.
  • the joining material 2 is pressed against the first surface 12 by the rivets 3.
  • the peripheral edge portion of the bonding material 2 is suppressed from being separated from the base metal 1.
  • the deterioration of the joint between the contact 4 and the base metal 1 can be suppressed.
  • FIG. 9 is a sectional view showing an electric contact according to the third embodiment of the present invention.
  • An uneven portion 34 is formed on the surface of the first flange 31 of the rivet 3 facing the contact 4.
  • the contact area of the first brim portion 31 of the rivet 3 with the bonding material 2 increases. Therefore, the bonding strength between the first flange portion 31 of the rivet 3 and the bonding material 2 is improved.
  • Other configurations are similar to those of the first embodiment. Note that other configurations may be similar to those of the second embodiment.
  • the concavo-convex portion 34 is formed on the surface of the first flange 31 facing the contact 4. Thereby, the bonding strength between the first flange portion 31 of the rivet 3 and the bonding material 2 can be improved.
  • FIG. 10 is a sectional view showing an electric contact according to Embodiment 4 of the present invention.
  • An uneven portion 35 is formed on the surface of the first brim portion 31 of the rivet 3 facing the base metal 1.
  • the contact area of the first brim portion 31 of the rivet 3 with the bonding material 2 increases. Therefore, the bonding strength between the first flange portion 31 of the rivet 3 and the bonding material 2 is improved.
  • the uneven portion 35 is formed on the surface of the first flange 31 of the rivet 3 facing the base metal 1.
  • a concavo-convex portion 41 is formed on the surface of the contact 4 facing the base metal 1.
  • FIG. 11 is a sectional view showing an electric contact according to the fifth embodiment of the present invention.
  • a concave portion 42 is formed on the surface of the peripheral portion of the contact point 4 facing the base metal 1.
  • the contact area of the peripheral edge of the contact 4 with the bonding material 2 increases. Therefore, the bonding strength between the peripheral portion of the contact 4 and the bonding material 2 is improved.
  • Other configurations are similar to those of the fourth embodiment.
  • the concave portion 42 is formed on the surface of the peripheral portion of the contact 4 facing the base metal 1. Thereby, the bonding strength between the peripheral portion of the contact 4 and the bonding material 2 can be improved.
  • the uneven portion 34 is formed on the surface of the first flange 31 facing the contact point 4, and the uneven portion 35 is formed on the surface of the first flange 31 facing the base metal 1.
  • the configuration is not limited to this, and as shown in FIG. 12, a configuration may be adopted in which the concave portion 36 is formed in the surface facing the contact point 4 in the peripheral portion of the first flange portion 31. Thereby, the bonding strength between the peripheral portion of the first flange 31 and the bonding material 2 can be improved.
  • a configuration may be adopted in which a concave portion 37 is formed in the peripheral portion of the first flange portion 31 on the surface facing the base metal 1. Thereby, the bonding strength between the peripheral portion of the first flange 31 and the bonding material 2 can be improved.

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  • Manufacturing & Machinery (AREA)
  • Contacts (AREA)
  • Manufacture Of Switches (AREA)

Abstract

An electric contactor that can suppress the deterioration of a joint between a contact point and a base metal is obtained. This electric contactor comprises: a base metal formed in a plate shape and having a through-hole formed in a plate thickness direction; a joining material provided on a first surface of the base metal; a contact point joined to the base metal via the joining material; and a rivet having a first flange part facing the first surface and provided inside the joining material, a leg part formed integrally with the first flange part and inserted into the through-hole, and a second flange part formed integrally with the leg part and facing a second surface of the base metal, wherein the joining material is pressed against the first surface by the rivet.

Description

電気接触子およびその製造方法Electric contactor and manufacturing method thereof
　この発明は、接点が台金に接合された電気接触子およびその製造方法に関する。 The present invention relates to an electric contactor in which contacts are joined to a base metal and a method for manufacturing the same.
　従来、台金と、台金に設けられた接合材と、接合材を介して台金に接合された接点とを備えた電気接触子が知られている（例えば、特許文献１参照）。また、従来、板厚方向に貫通孔が形成された台金と、台金に設けられた接合材と、貫通孔に挿入された脚部および接合材を介して台金に接合された鍔部を有するリベットと、リベットの鍔部に設けられた接点とを備えた電気接触子が知られている（例えば、特許文献２参照）。 Conventionally, an electric contactor including a base metal, a bonding material provided on the base metal, and a contact bonded to the base metal via the bonding material is known (see, for example, Patent Document 1). Further, conventionally, a base metal having a through hole formed in the plate thickness direction, a joining material provided on the base metal, a leg portion inserted into the through hole, and a collar portion joined to the base metal via the joining material. There is known an electric contactor including a rivet having a rivet and a contact provided on a collar portion of the rivet (for example, see Patent Document 2).
特開２０１４－２３２６１７号公報JP, 2014-232617, A 特開２０１６－２０７３８０号公報JP, 2016-207380, A
　しかしながら、特許文献１に記載の電気接触子では、電気接触子が使用されることによって、接合材の周縁部が台金から剥離する場合がある。この場合に、接点と台金との間の接合が劣化してしまうという課題があった。特許文献２に記載の電気接触子では、電気接触子が使用されることによって、接点の周縁部がリベットの鍔部から剥離する場合がある。この場合に、リベットを介した接点と台金との間の接合が劣化してしまうという課題があった。 However, in the electric contactor described in Patent Document 1, the peripheral portion of the bonding material may be separated from the base metal due to the use of the electric contactor. In this case, there is a problem that the joint between the contact and the base metal is deteriorated. In the electric contactor described in Patent Document 2, the peripheral edge portion of the contact may be separated from the collar portion of the rivet by using the electric contactor. In this case, there has been a problem that the joint between the contact point and the base metal via the rivet is deteriorated.
　この発明は、上述のような課題を解決するためになされたものであり、その目的は、接点と台金との間の接合の劣化を抑制することができる電気接触子およびその製造方法を提供するものである。 The present invention has been made to solve the above problems, and an object thereof is to provide an electric contactor capable of suppressing deterioration of the joint between a contact and a base metal and a manufacturing method thereof. To do.
　この発明に係る電気接触子は、板形状に形成され、板厚方向に貫通孔が形成された台金と、台金の第１面に設けられた接合材と、接合材を介して台金に接合された接点と、第１面に対向し、接合材の内部に設けられた第１鍔部、第１鍔部と一体に形成され、貫通孔に挿入された脚部および脚部に一体に形成され、台金の第２面に対向する第２鍔部を有するリベットとを備え、接合材は、リベットによって、第１面に押し付けられている。
　この発明に係る電気接触子の製造方法は、板形状の台金の第１面に第１接合材を塗布する第１接合材塗布工程と、第１接合材塗布工程の後、台金に形成された貫通孔にリベットの脚部を挿入して、リベットの第１鍔部を第１接合材に重ねるリベット脚部挿入工程と、リベット脚部挿入工程の後、第１鍔部および第１接合材に第２接合材を塗布して、第１鍔部を第１接合材と第２接合材との間に配置する第２接合材塗布工程と、第２接合材塗布工程の後、第２接合材に接点を重ね、接点、第１接合材および第２接合材を積層方向に圧縮するとともに加熱して、第１接合材および第２接合材からなる接合材を介して、接点、リベットおよび台金を互いに接合する接点接合工程と、接点接合工程の後、脚部を変形させて、台金の第２面に対向する第２鍔部をリベットに形成する脚部変形工程とを備え、脚部変形工程において、接合材は、リベットによって、第１面に押し付けられる。 The electrical contactor according to the present invention is formed into a plate shape and has a base metal having through holes formed in the plate thickness direction, a bonding material provided on the first surface of the metal base, and a base metal via the bonding material. To the contact point joined to the first surface, the first brim portion provided inside the bonding material, facing the first surface, and integrally formed with the first brim portion and the leg portion and the leg portion inserted into the through hole. And a rivet having a second collar portion facing the second surface of the base metal, and the joining material is pressed against the first surface by the rivet.
A method of manufacturing an electric contact according to the present invention includes a first bonding material applying step of applying a first bonding material to a first surface of a plate-shaped base metal, and a step of forming the base metal after the first bonding material applying step. The rivet leg inserting step of inserting the rivet leg into the formed through hole and stacking the first rivet first collar on the first joining material, and the rivet leg inserting step, after which the first rivet and first joining are performed. A second bonding material applying step of applying a second bonding material to the material and arranging the first brim portion between the first bonding material and the second bonding material; A contact is placed on the bonding material, the contact, the first bonding material, and the second bonding material are compressed in the stacking direction and heated, and the contact, the rivet, and the A contact bonding step of bonding the base metal to each other, and a leg deforming step of deforming the leg portion after the contact bonding step to form a second brim portion facing the second surface of the base metal on the rivet, In the leg deforming step, the bonding material is pressed against the first surface by the rivet.
　この発明に係る電気接触子およびその製造方法によれば、接点と台金との間の接合の劣化を抑制することができる。 According to the electric contact and the manufacturing method thereof according to the present invention, it is possible to suppress the deterioration of the joint between the contact and the base metal.
この発明の実施の形態１に係る電気接触子を示す断面図である。It is sectional drawing which shows the electric contactor which concerns on Embodiment 1 of this invention. 図１のＡ部を示す拡大図である。It is an enlarged view which shows the A section of FIG. 図１の電気接触子の製造方法を示すフローチャートである。3 is a flowchart showing a method of manufacturing the electric contactor of FIG. 1. 図３の第１接合材塗布工程を示す図である。It is a figure which shows the 1st joining material application process of FIG. 図３のリベット脚部挿入工程を示す図である。It is a figure which shows the rivet leg part insertion process of FIG. 図３の第２接合材塗布工程を示す図である。It is a figure which shows the 2nd joining material application process of FIG. 図３の接点接合工程を示す図である。It is a figure which shows the contact bonding process of FIG. 図３の脚部変形工程を示す図である。It is a figure which shows the leg deformation|transformation process of FIG. この発明の実施の形態３に係る電気接触子を示す断面図である。It is sectional drawing which shows the electric contactor which concerns on Embodiment 3 of this invention. この発明の実施の形態４に係る電気接触子を示す断面図である。It is sectional drawing which shows the electric contactor which concerns on Embodiment 4 of this invention. この発明の実施の形態５に係る電気接触子を示す断面図である。It is sectional drawing which shows the electric contactor which concerns on Embodiment 5 of this invention. 図１１の電気接触子の変形例を示す断面図である。It is sectional drawing which shows the modification of the electric contactor of FIG. 図１１の電気接触子の変形例を示す断面図である。It is sectional drawing which shows the modification of the electric contactor of FIG.
　実施の形態１．
　図１は、この発明の実施の形態１に係る電気接触子を示す断面図である。図２は、図１のＡ部を示す拡大図である。この発明の実施の形態１に係る電気接触子は、台金１と、台金１に設けられた接合材２と、接合材２を介して台金１に接合されたリベット３と、接合材２を介して台金１に接合された接点４とを備えている。 Embodiment 1.
1 is a sectional view showing an electric contactor according to Embodiment 1 of the present invention. FIG. 2 is an enlarged view showing part A of FIG. The electric contactor according to Embodiment 1 of the present invention includes a base metal 1, a joining material 2 provided on the base metal 1, a rivet 3 joined to the base metal 1 via the joining material 2, and a joining material. And a contact point 4 joined to the base metal 1 via 2.
　台金１は、Ｃｕ（銅）を主成分とする銅合金から構成されている。台金１は、板形状に形成されている。台金１には、台金１の板厚方向に貫通する貫通孔１１が形成されている。台金１における一方の面を第１面１２とし、他方の面を第２面１３とする。 The base metal 1 is made of a copper alloy whose main component is Cu (copper). The base metal 1 is formed in a plate shape. The base metal 1 is formed with a through hole 11 penetrating in the plate thickness direction of the base metal 1. One surface of the base metal 1 is a first surface 12 and the other surface is a second surface 13.
　接合材２は、台金１の第１面１２に重ねられている。接合材２としては、Ａｇ（銀）微粒子であるＡｇナノ粒子を含む焼結型銀接合材ペーストが用いられている。Ａｇ微粒子は、金属微粒子に含まれる。Ａｇナノ粒子の中心粒子径は、５０ｎｍとなっている。 The joining material 2 is overlaid on the first surface 12 of the base metal 1. As the bonding material 2, a sintered silver bonding material paste containing Ag nanoparticles that are Ag (silver) particles is used. The Ag particles are included in the metal particles. The central particle diameter of Ag nanoparticles is 50 nm.
　リベット３は、第１面１２に対向し、接合材２の内部に設けられた第１鍔部３１と、第１鍔部３１と一体に形成され、貫通孔１１に挿入された脚部３２と、脚部３２に一体に形成され、第２面１３に対向する第２鍔部３３とを有している。台金１の板厚方向に視た場合に、第１鍔部３１の面積は、貫通孔１１の面積よりも大きい。したがって、第１鍔部３１は、貫通孔１１に挿入されない。また、台金１の板厚方向に視た場合に、第２鍔部３３の面積は、貫通孔１１の面積よりも大きい。したがって、第２鍔部３３は、貫通孔１１に挿入されない。 The rivet 3 faces the first surface 12 and has a first flange portion 31 provided inside the bonding material 2, and a leg portion 32 formed integrally with the first flange portion 31 and inserted into the through hole 11. The second flange portion 33 is formed integrally with the leg portion 32 and faces the second surface 13. When viewed in the plate thickness direction of the base metal 1, the area of the first flange portion 31 is larger than the area of the through hole 11. Therefore, the first flange portion 31 is not inserted into the through hole 11. Further, when viewed in the plate thickness direction of the base metal 1, the area of the second flange portion 33 is larger than the area of the through hole 11. Therefore, the second flange 33 is not inserted into the through hole 11.
　第２鍔部３３は、台金１を接合材２に向かって押している。これにより、接合材２には、圧縮力Ｐが作用している。言い換えれば、接合材２は、リベット３によって、第１面１２に押し付けられている。 The second flange 33 pushes the base metal 1 toward the bonding material 2. As a result, the compressive force P acts on the bonding material 2. In other words, the joining material 2 is pressed against the first surface 12 by the rivets 3.
　接点４は、主成分と添加物とを含んでいる。接点４の主成分は、Ａｇとなっている。接点４の添加物は、Ｉｎ（インジウム）の酸化物およびＳｎ（錫）の酸化物となっている。接点４には、Ｉｎの酸化物およびＳｎの酸化物が１～３０ｗｔ％程度含まれている。 Contact point 4 contains a main component and an additive. The main component of the contact 4 is Ag. The additives of the contact 4 are In (indium) oxide and Sn (tin) oxide. The contact 4 contains about 1 to 30 wt% of In oxide and Sn oxide.
　次に、電気接触子の製造方法について説明する。図３は、図１の電気接触子の製造方法を示すフローチャートである。まず、ステップＳ１において、第１接合材塗布工程を行う。図４は、図３の第１接合材塗布工程を示す図である。第１接合材塗布工程では、台金１の第１面１２であって貫通孔１１の周囲に第１接合材２１を塗布する。 Next, a method of manufacturing the electric contact will be described. FIG. 3 is a flowchart showing a method for manufacturing the electric contactor of FIG. First, in step S1, the first bonding material coating step is performed. FIG. 4 is a diagram showing the first bonding material applying step of FIG. In the first bonding material applying step, the first bonding material 21 is applied around the through hole 11 on the first surface 12 of the base metal 1.
　第１接合材２１は、接合材２の一部である。第１接合材２１の量は、接合材２の量の１／３の量となっている。第１接合材２１の厚さ方向の寸法は、約５０μｍとなっている。 The first bonding material 21 is a part of the bonding material 2. The amount of the first bonding material 21 is 1/3 of the amount of the bonding material 2. The dimension of the first bonding material 21 in the thickness direction is about 50 μm.
　第１接合材塗布工程では、スクリーン印刷機およびスクリーン印刷マスクが用いられる。スクリーン印刷機およびスクリーン印刷マスクが用いられることによって、台金１における設定領域のみに、第１接合材２１が塗布される。 A screen printing machine and a screen printing mask are used in the first bonding material application step. By using the screen printing machine and the screen printing mask, the first bonding material 21 is applied only to the set region of the base metal 1.
　図３に示すように、ステップＳ１の後、ステップＳ２において、第１熱乾燥工程を行う。第１熱乾燥工程では、第１接合材２１に含まれる有機溶媒を除去する。なお、第１接合材２１の厚さ方向の寸法が小さい場合には、第１熱乾燥工程は、省略可能である。 As shown in FIG. 3, after step S1, a first heat drying step is performed in step S2. In the first heat drying step, the organic solvent contained in the first bonding material 21 is removed. When the dimension of the first bonding material 21 in the thickness direction is small, the first heat drying step can be omitted.
　ステップＳ２の後、ステップＳ３において、リベット脚部挿入工程を行う。図５は、図３のリベット脚部挿入工程を示す図である。リベット脚部挿入工程では、台金１の貫通孔１１にリベット３の脚部３２を第１面１２側から挿入して、リベット３の第１鍔部３１を第１接合材２１に重ねる。リベット脚部挿入工程では、リベット３の脚部３２の一部を、第２面１３に対して第１面１２から離れる方向に突出させる。第１熱乾燥工程において、第１接合材２１に含まれる有機溶媒が除去されているので、リベット脚部挿入工程において、第１接合材２１がリベット３の第１鍔部３１と台金１との間で押しつぶされることが抑制される。 After step S2, the step of inserting the rivet leg is performed in step S3. FIG. 5: is a figure which shows the rivet leg part insertion process of FIG. In the rivet leg inserting step, the leg 32 of the rivet 3 is inserted into the through hole 11 of the base metal 1 from the first surface 12 side, and the first flange 31 of the rivet 3 is overlaid on the first joining material 21. In the step of inserting the rivet leg portion, a part of the leg portion 32 of the rivet 3 is projected in the direction away from the first surface 12 with respect to the second surface 13. Since the organic solvent contained in the first bonding material 21 has been removed in the first heat drying step, the first bonding material 21 forms the first brim portion 31 of the rivet 3 and the base metal 1 in the rivet leg insertion step. Crushing between the two is suppressed.
　図３に示すように、ステップＳ３の後、ステップＳ４において、第２接合材塗布工程を行う。図６は、図３の第２接合材塗布工程を示す図である。第２接合材塗布工程では、第１鍔部３１および第１接合材２１に第２接合材２２を塗布して、第１鍔部３１を第１接合材２１と第２接合材２２との間に配置する。 As shown in FIG. 3, after step S3, a second bonding material application step is performed in step S4. FIG. 6 is a diagram showing the second bonding material applying step of FIG. In the second bonding material applying step, the second bonding material 22 is applied to the first brim portion 31 and the first bonding material 21 so that the first brim portion 31 is interposed between the first bonding material 21 and the second bonding material 22. To place.
　第２接合材２２は、接合材２の一部である。第２接合材２２の量は、接合材２の量の２／３の量となっている。言い換えれば、第２接合材２２は、接合材２のうちから第１接合材２１を除いた部分である。第２接合材塗布工程では、第１接合材塗布工程と同様に、スクリーン印刷機およびスクリーン印刷マスクが用いられる。これにより、第１鍔部３１および第１接合材２１におけるそれぞれの設定領域のみに、第２接合材２２が塗布される。スクリーン印刷版の版厚を変更することによって、第２接合材２２の塗布量が変更される。 The second joint material 22 is a part of the joint material 2. The amount of the second bonding material 22 is ⅔ of the amount of the bonding material 2. In other words, the second bonding material 22 is a portion of the bonding material 2 excluding the first bonding material 21. In the second bonding material applying step, the screen printing machine and the screen printing mask are used as in the first bonding material applying step. As a result, the second bonding material 22 is applied only to the respective set areas of the first flange portion 31 and the first bonding material 21. The coating amount of the second bonding material 22 is changed by changing the plate thickness of the screen printing plate.
　図３に示すように、ステップＳ４の後、ステップＳ５において、第２熱乾燥工程を行う。第２熱乾燥工程では、接合材２に含まれる有機溶媒を除去する。第２熱乾燥工程では、接合材２を３０分間だけ８０℃に加熱する。 As shown in FIG. 3, after step S4, a second heat drying step is performed in step S5. In the second heat drying step, the organic solvent contained in the bonding material 2 is removed. In the second heat drying step, the bonding material 2 is heated to 80° C. for 30 minutes.
　ステップＳ５の後、ステップＳ６において、接点接合工程を行う。図７は、図３の接点接合工程を示す図である。接点接合工程では、第２接合材２２に接点４を重ね、接点４、第１接合材２１および第２接合材２２を積層方向に圧縮するとともに加熱して、第１接合材２１および第２接合材２２からなる接合材２と接点４とを接合する。 After step S5, a contact joining process is performed in step S6. FIG. 7 is a diagram showing the contact bonding step of FIG. In the contact bonding step, the contact 4 is stacked on the second bonding material 22, and the contact 4, the first bonding material 21, and the second bonding material 22 are compressed in the stacking direction and heated to bond the first bonding material 21 and the second bonding material. The joining material 2 made of the material 22 and the contact 4 are joined.
　第２接合材２２に接点４を重ねる作業は、位置合わせカメラおよびマウント用コレットを有するマウント装置によって自動的に行われる。マウント装置は、位置合わせカメラが撮影する画像を用いて、接点４の位置と第２接合材２２の位置とのそれぞれを特定し、第２接合材２２に対して接点４が重ねられる位置を決定する。 The work of stacking the contact points 4 on the second bonding material 22 is automatically performed by a mounting device having a positioning camera and a mounting collet. The mounting device identifies each of the position of the contact 4 and the position of the second bonding material 22 by using the image captured by the alignment camera, and determines the position where the contact 4 is overlapped with the second bonding material 22. To do.
　また、第２接合材２２に接点４を重ねる作業では、マウント装置は、接点４を保持するマウント用コレットを１５０℃程度に加熱して、５００Ｐａ程度の圧力で、接点４を第２接合材２２に押し付ける。これにより、第２接合材２２に含まれる粘着溶媒が揮発して、接点４と第２接合材２２とが互いに粘着される。 In addition, in the operation of stacking the contact 4 on the second bonding material 22, the mounting device heats the mounting collet holding the contact 4 to about 150° C. and presses the contact 4 with the second bonding material 22 at a pressure of about 500 Pa. Press on. As a result, the adhesive solvent contained in the second bonding material 22 is volatilized, and the contact 4 and the second bonding material 22 are bonded to each other.
　接点４、第１接合材２１および第２接合材２２を積層方向に圧縮するとともに加熱する作業は、一対の接合用コレット５によって行われる。接点４、第１接合材２１および第２接合材２２を積層方向に圧縮するとともに加熱する作業では、一方の接合用コレット５を接点４に当て、他方の接合用コレット５を脚部３２に当てる。また、接点４、第１接合材２１および第２接合材２２を積層方向に圧縮するとともに加熱する作業では、接合用コレット５を２５０℃に加熱すると同時に接合用コレット５を用いて１０ＭＰａの圧力で、接点４および脚部３２を積層方向に１０分間だけ圧縮する。これにより、第１接合材２１と第２接合材２２とが一体となり、接点４と接合材２とが互いに接合される。 The work of compressing and heating the contact 4, the first joining material 21, and the second joining material 22 in the stacking direction is performed by the pair of joining collets 5. In the work of compressing and heating the contact point 4, the first bonding material 21, and the second bonding material 22 in the stacking direction, one joining collet 5 is applied to the contact 4 and the other joining collet 5 is applied to the leg portion 32. .. Further, in the work of compressing and heating the contact point 4, the first bonding material 21, and the second bonding material 22 in the stacking direction, the bonding collet 5 is heated to 250° C., and at the same time, the bonding collet 5 is used at a pressure of 10 MPa. , The contacts 4 and the legs 32 are compressed in the stacking direction for 10 minutes. As a result, the first bonding material 21 and the second bonding material 22 are integrated, and the contact points 4 and the bonding material 2 are bonded to each other.
　図３に示すように、ステップＳ６の後、ステップＳ７において、脚部変形工程を行う。図８は、図３の脚部変形工程を示す図である。脚部変形工程では、脚部３２を変形させて、第２面１３に対向する第２鍔部３３をリベット３に形成する。これにより、リベット３がかしめによって台金１に固定される。この例では、脚部３２を積層方向に圧縮して、第２面１３に対向する第２鍔部３３をリベット３に形成する。脚部変形工程では、一対の接合用コレット５を用いて３０ＭＰａの圧力で、接点４および脚部３２を積層方向に１０分間だけ圧縮する。以上により、電気接触子が製造される。 As shown in FIG. 3, after step S6, a leg deforming step is performed in step S7. FIG. 8: is a figure which shows the leg deformation process of FIG. In the leg deforming step, the leg 32 is deformed to form the second brim portion 33 facing the second surface 13 on the rivet 3. As a result, the rivet 3 is fixed to the base metal 1 by caulking. In this example, the leg portion 32 is compressed in the stacking direction, and the second collar portion 33 facing the second surface 13 is formed on the rivet 3. In the leg deforming step, the contact 4 and the leg 32 are compressed in the stacking direction for 10 minutes at a pressure of 30 MPa using the pair of joining collets 5. By the above, an electric contactor is manufactured.
　脚部変形工程によって、リベット３には、第２鍔部３３が形成される。これにより、図２に示すように、接点４の周縁部に対して重ねられた接合材２の部分に作用する圧縮力Ｐが残存する。言い換えれば、接点４の周縁部に対して重ねられた接合材２の部分は、第１面１２に押し付けられる。したがって、接点４と接合材２との間の接合強度が向上し、台金１からの接点４の剥離が抑制される。その結果、電気接触子の信頼性寿命が長くなる。 The second collar 33 is formed on the rivet 3 by the leg deforming process. As a result, as shown in FIG. 2, the compressive force P that acts on the portion of the bonding material 2 that overlaps the peripheral portion of the contact 4 remains. In other words, the portion of the bonding material 2 that is overlapped with the peripheral portion of the contact 4 is pressed against the first surface 12. Therefore, the bonding strength between the contact 4 and the bonding material 2 is improved, and peeling of the contact 4 from the base metal 1 is suppressed. As a result, the reliable life of the electrical contact is extended.
　次に、リベット３の第１鍔部３１が接合材２の内部に配置されることによるさらなる効果について説明する。第１鍔部３１が接合材２の内部に配置されていない場合には、接点４は台金１に対して接合材２を介して接合される。したがって、接点４と接合材２の間の界面には、拡散接合が形成される。接点４と接合材２との間の接合力は、接点４と接合材２とを接合した際に外部から加えられた機械的応力と加熱温度とによって決定される。したがって、電気接触子が使用されるにつれて、接点４と接合材２との間の接合力は、徐々に低下する。接点４と接合材２との間の接合力のうちで、接点４の周縁部と接点４の周縁部に重ねられた接合材２の部分との間の接合力が最も弱いので、接点４の周縁部と接点４の周縁部に重ねられた接合材２の部分との間で、剥離現象が発生しやすい。 Next, a further effect obtained by disposing the first flange portion 31 of the rivet 3 inside the bonding material 2 will be described. When the first collar portion 31 is not arranged inside the bonding material 2, the contact 4 is bonded to the base metal 1 via the bonding material 2. Therefore, diffusion bonding is formed at the interface between the contact 4 and the bonding material 2. The bonding force between the contact 4 and the bonding material 2 is determined by the mechanical stress and the heating temperature applied from the outside when the contact 4 and the bonding material 2 are bonded. Therefore, as the electric contactor is used, the bonding force between the contact 4 and the bonding material 2 gradually decreases. Of the joining forces between the contact points 4 and the joining material 2, the joining force between the peripheral edge portion of the contact points 4 and the portion of the joining material 2 overlapped with the peripheral edge portions of the contact points 4 is the weakest. A peeling phenomenon is likely to occur between the peripheral portion and the portion of the bonding material 2 that is overlapped with the peripheral portion of the contact 4.
　一方、第１鍔部３１が接合材２の内部に配置されている場合には、リベット３には、リベット３の圧縮変形によってリベット３に生じた応力を解放する力が働く。したがって、第１鍔部３１には、接合材２を接点４に向かって押し付ける力が働く。第１鍔部３１の周縁部によって接合材２が接点４に向かって押し付けられる力は、第１鍔部３１の中心部によって接合材２が接点４に向かって押し付けられる力よりも大きい。したがって、接合材２の周縁部は、接合材２の中心部よりも強い力で接点４に向かって押し付けられる。 On the other hand, when the first brim portion 31 is arranged inside the bonding material 2, a force for releasing the stress generated in the rivet 3 due to the compressive deformation of the rivet 3 acts on the rivet 3. Therefore, a force that presses the bonding material 2 toward the contact 4 acts on the first flange portion 31. The force with which the bonding material 2 is pressed toward the contact 4 by the peripheral portion of the first flange 31 is greater than the force with which the bonding material 2 is pressed toward the contact 4 by the center of the first flange 31. Therefore, the peripheral edge portion of the bonding material 2 is pressed toward the contact point 4 with a stronger force than the central portion of the bonding material 2.
　接点接合工程の後においても、外部からの機械的応力および加熱が接合材２と接点４とに加えられることによって、接合材２と接点４との間の界面での拡散接合が進行し、接合材２と接点４との間の接合強度が高くなる。したがって、リベット３から接点４に作用する力によって、接合材２と接点４との間の拡散接合が進行する。その結果、電気接触子が使用されるにつれて、接合材２と接点４との間の接合強度が高くなる。以上のことから、リベット３の第１鍔部３１が接合材２の内部に配置されていない場合と比較して、接点４の周縁部と接点４の周縁部に重ねられた接合材２の部分との間の接合強度が高くなる。 Even after the contact bonding step, external mechanical stress and heating are applied to the bonding material 2 and the contact 4, so that diffusion bonding at the interface between the bonding material 2 and the contact 4 proceeds and bonding is performed. The bonding strength between the material 2 and the contact 4 is increased. Therefore, the diffusion bonding between the bonding material 2 and the contact 4 proceeds due to the force applied from the rivet 3 to the contact 4. As a result, as the electric contact is used, the bonding strength between the bonding material 2 and the contact 4 increases. From the above, as compared with the case where the first brim portion 31 of the rivet 3 is not arranged inside the bonding material 2, the peripheral portion of the contact 4 and the portion of the bonding material 2 overlapped with the peripheral portion of the contact 4. The joint strength between
　以上説明したように、この発明の実施の形態１に係る電気接触子によれば、接合材２を介して台金１に接合された接点４と、リベット３とを備えている。リベット３は、第１面１２に対向し、接合材２の内部に設けられた第１鍔部３１、第１鍔部３１と一体に形成され、貫通孔１１に挿入された脚部３２および脚部３２に一体に形成され、台金１の第２面１３に対向する第２鍔部３３を有している。接合材２は、リベット３によって、第１面１２に押し付けられている。これにより、接合材２の周縁部が台金１から剥離することが抑制される。その結果、接点４と台金１との間の接合の劣化を抑制することができる。 As described above, the electric contactor according to the first embodiment of the present invention includes the contact 4 joined to the base metal 1 via the joining material 2 and the rivet 3. The rivet 3 faces the first surface 12 and is formed integrally with the first flange portion 31, the first flange portion 31 provided inside the bonding material 2, and the leg portion 32 and the leg portion 32 inserted into the through hole 11. The base 32 has a second flange 33 that is integrally formed with the base 32 and faces the second surface 13 of the base metal 1. The joining material 2 is pressed against the first surface 12 by the rivets 3. As a result, the peripheral edge portion of the bonding material 2 is suppressed from being separated from the base metal 1. As a result, the deterioration of the joint between the contact 4 and the base metal 1 can be suppressed.
　また、接点４の周縁部に対して重ねられた接合材２の部分は、リベット３によって、第１面１２に押し付けられている。電気接触子が使用されることによって、接点４の周縁部には、接合材２から離れる方向に力が作用する。接点４の周縁部に対して重ねられた接合材２の部分は、リベット３によって、第１面１２に押し付けられることによって、接点４の周縁部に対して重ねられた接合材２の部分が台金１から離れることが抑制される。その結果、接点４と台金１との間の接合の劣化を抑制することができる。 The part of the bonding material 2 that is overlapped with the peripheral edge of the contact 4 is pressed against the first surface 12 by the rivet 3. By using the electric contactor, a force acts on the peripheral portion of the contact 4 in a direction away from the bonding material 2. The portion of the bonding material 2 overlapped with the peripheral edge of the contact 4 is pressed against the first surface 12 by the rivet 3, so that the portion of the bonding material 2 overlapped with the peripheral edge of the contact 4 becomes a base. It is possible to suppress separation from Gold 1. As a result, the deterioration of the joint between the contact 4 and the base metal 1 can be suppressed.
　また、第１鍔部３１の周縁部は、接合材２を接点４に向かって押し付ける。したがって、接点４の周縁部と接点４の周縁部に重ねられた接合材２の部分との間の接合強度を高くすることができる。 Also, the peripheral edge of the first flange 31 presses the bonding material 2 toward the contact 4. Therefore, the bonding strength between the peripheral portion of the contact 4 and the portion of the bonding material 2 overlapped with the peripheral portion of the contact 4 can be increased.
　この発明の実施の形態１に係る電気接触子の製造方法によれば、脚部３２を変形させて、台金１の第２面１３に対向する第２鍔部３３をリベット３に形成する脚部変形工程を備え、脚部変形工程において、接合材２は、リベット３によって、第１面１２に押し付けられる。これにより、接合材２の周縁部が台金１から剥離することが抑制される。その結果、接点４と台金１との間の接合の劣化を抑制することができる。 According to the method for manufacturing an electric contact according to the first embodiment of the present invention, the leg portion 32 is deformed to form the second flange portion 33 facing the second surface 13 of the base metal 1 on the rivet 3. In the leg deforming step, the joining material 2 is pressed against the first surface 12 by the rivets 3. As a result, the peripheral edge portion of the bonding material 2 is suppressed from being separated from the base metal 1. As a result, the deterioration of the joint between the contact 4 and the base metal 1 can be suppressed.
　実施の形態２．
　上記実施の形態１では、接合材２がＡｇ微粒子を含んでいる。また、上記実施の形態１では、接点４の主成分がＡｇとなっており、接点４の添加物がＩｎの酸化物およびＳｎの酸化物となっている。一方、実施の形態２では、接合材２がＣｕ微粒子であるＣｕナノ粒子を含んでいる。Ｃｕ微粒子は、金属微粒子に含まれる。接点４の主成分がＣｕとなっており、接点４の添加物がＷ（タングステン）となっている。接点４には、Ｗが１～４０ｗｔ％程度含まれている。その他の構成は、実施の形態１と同様である。 Embodiment 2.
In the first embodiment, the bonding material 2 contains Ag fine particles. In addition, in the first embodiment, the main component of the contact 4 is Ag, and the additive of the contact 4 is the oxide of In and the oxide of Sn. On the other hand, in the second embodiment, the bonding material 2 contains Cu nanoparticles that are Cu fine particles. Cu fine particles are included in the metal fine particles. The main component of the contact 4 is Cu, and the additive of the contact 4 is W (tungsten). The contact 4 contains about 1 to 40 wt% of W. Other configurations are similar to those of the first embodiment.
　上記実施の形態１では、接点接合工程において、接合用コレット５を２５０℃に加熱すると同時に接合用コレット５を用いて１０ＭＰａの圧力で、接点４および脚部３２を積層方向に１０分間だけ圧縮した。一方、実施の形態２では、接点接合工程において、接合用コレット５を２８０℃に加熱すると同時に接合用コレット５を用いて２０ＭＰａの圧力で、接点４および脚部３２を積層方向に１０分間だけ圧縮する。その他の電気接触子の製造方法は、実施の形態１と同様である。 In the first embodiment, in the contact joining step, the joining collet 5 is heated to 250° C., and at the same time, the joining collet 5 is used to compress the contacts 4 and the leg portions 32 in the stacking direction for 10 minutes at a pressure of 10 MPa. .. On the other hand, in the second embodiment, in the contact joining step, the joining collet 5 is heated to 280° C., and at the same time, the joining collet 5 is used to compress the contacts 4 and the leg portions 32 in the stacking direction at a pressure of 20 MPa for 10 minutes. To do. The other manufacturing method of the electric contact is similar to that of the first embodiment.
　以上説明したように、この発明の実施の形態２に係る電気接触子によれば、接合材２を介して台金１に接合された接点４と、リベット３とを備えている。リベット３は、第１面１２に対向し、接合材２の内部に設けられた第１鍔部３１、第１鍔部３１と一体に形成され、貫通孔１１に挿入された脚部３２および脚部３２に一体に形成され、台金１の第２面１３に対向する第２鍔部３３を有している。接合材２は、リベット３によって、第１面１２に押し付けられている。これにより、接合材２の周縁部が台金１から剥離することが抑制される。その結果、接点４と台金１との間の接合の劣化を抑制することができる。 As described above, the electric contact according to the second embodiment of the present invention includes the contact 4 joined to the base metal 1 via the joining material 2 and the rivet 3. The rivet 3 faces the first surface 12 and is formed integrally with the first flange portion 31, the first flange portion 31 provided inside the bonding material 2, and the leg portion 32 and the leg portion 32 inserted into the through hole 11. The base 32 has a second flange 33 that is integrally formed with the base 32 and faces the second surface 13 of the base metal 1. The joining material 2 is pressed against the first surface 12 by the rivets 3. As a result, the peripheral edge portion of the bonding material 2 is suppressed from being separated from the base metal 1. As a result, the deterioration of the joint between the contact 4 and the base metal 1 can be suppressed.
　実施の形態３．
　図９は、この発明の実施の形態３に係る電気接触子を示す断面図である。リベット３の第１鍔部３１における接点４に対向する面には、凹凸部３４が形成されている。これにより、リベット３の第１鍔部３１における接合材２に対する接触面積が増加する。したがって、リベット３の第１鍔部３１と接合材２との間の接合強度が向上する。その他の構成は、実施の形態１と同様である。なお、その他の構成は、実施の形態２と同様であってもよい。 Embodiment 3.
FIG. 9 is a sectional view showing an electric contact according to the third embodiment of the present invention. An uneven portion 34 is formed on the surface of the first flange 31 of the rivet 3 facing the contact 4. As a result, the contact area of the first brim portion 31 of the rivet 3 with the bonding material 2 increases. Therefore, the bonding strength between the first flange portion 31 of the rivet 3 and the bonding material 2 is improved. Other configurations are similar to those of the first embodiment. Note that other configurations may be similar to those of the second embodiment.
　以上説明したように、この発明の実施の形態２に係る電気接触子によれば、第１鍔部３１における接点４に対向する面には、凹凸部３４が形成されている。これにより、リベット３の第１鍔部３１と接合材２との間の接合強度を向上させることができる。 As described above, according to the electric contactor of the second embodiment of the present invention, the concavo-convex portion 34 is formed on the surface of the first flange 31 facing the contact 4. Thereby, the bonding strength between the first flange portion 31 of the rivet 3 and the bonding material 2 can be improved.
　実施の形態４．
　図１０は、この発明の実施の形態４に係る電気接触子を示す断面図である。リベット３の第１鍔部３１における台金１に対向する面には、凹凸部３５が形成されている。これにより、リベット３の第１鍔部３１における接合材２に対する接触面積が増加する。したがって、リベット３の第１鍔部３１と接合材２との間の接合強度が向上する。 Fourth Embodiment
FIG. 10 is a sectional view showing an electric contact according to Embodiment 4 of the present invention. An uneven portion 35 is formed on the surface of the first brim portion 31 of the rivet 3 facing the base metal 1. As a result, the contact area of the first brim portion 31 of the rivet 3 with the bonding material 2 increases. Therefore, the bonding strength between the first flange portion 31 of the rivet 3 and the bonding material 2 is improved.
　接点４における台金１に対向する面には、凹凸部４１が形成されている。これにより、接点４における接合材２に対する接触面積が増加する。したがって、接点４と接合材２との間の接合強度が向上する。その他の構成は、実施の形態３と同様である。 An uneven portion 41 is formed on the surface of the contact 4 facing the base metal 1. As a result, the contact area of the contact point 4 with the bonding material 2 increases. Therefore, the bonding strength between the contact 4 and the bonding material 2 is improved. Other configurations are similar to those of the third embodiment.
　以上説明したように、この発明の実施の形態４に係る電気接触子によれば、リベット３の第１鍔部３１における台金１に対向する面には、凹凸部３５が形成されている。これにより、リベット３の第１鍔部３１と接合材２との間の接合強度を向上させることができる。 As described above, according to the electric contactor of the fourth embodiment of the present invention, the uneven portion 35 is formed on the surface of the first flange 31 of the rivet 3 facing the base metal 1. Thereby, the bonding strength between the first flange portion 31 of the rivet 3 and the bonding material 2 can be improved.
　また、接点４における台金１に対向する面には、凹凸部４１が形成されている。これにより、接点４と接合材２との間の接合強度を向上させることができる。 Further, a concavo-convex portion 41 is formed on the surface of the contact 4 facing the base metal 1. Thereby, the joint strength between the contact 4 and the joint material 2 can be improved.
　実施の形態５．
　図１１は、この発明の実施の形態５に係る電気接触子を示す断面図である。接点４の周縁部における台金１に対向する面には、凹部４２が形成されている。これにより、接点４の周縁部における接合材２に対する接触面積が増加する。したがって、接点４の周縁部と接合材２との間の接合強度が向上する。その他の構成は、実施の形態４と同様である。 Embodiment 5.
FIG. 11 is a sectional view showing an electric contact according to the fifth embodiment of the present invention. A concave portion 42 is formed on the surface of the peripheral portion of the contact point 4 facing the base metal 1. As a result, the contact area of the peripheral edge of the contact 4 with the bonding material 2 increases. Therefore, the bonding strength between the peripheral portion of the contact 4 and the bonding material 2 is improved. Other configurations are similar to those of the fourth embodiment.
　以上説明したように、この発明の実施の形態５に係る電気接触子によれば、接点４の周縁部における台金１に対向する面には、凹部４２が形成されている。これにより、接点４の周縁部と接合材２との間の接合強度を向上させることができる。 As described above, according to the electric contactor of the fifth embodiment of the present invention, the concave portion 42 is formed on the surface of the peripheral portion of the contact 4 facing the base metal 1. Thereby, the bonding strength between the peripheral portion of the contact 4 and the bonding material 2 can be improved.
　なお、上記実施の形態５では、第１鍔部３１における接点４に対向する面に凹凸部３４が形成され、第１鍔部３１における台金１に対向する面に凹凸部３５が形成されている。しかしながら、これに限らず、図１２に示すように、第１鍔部３１の周縁部における接点４に対向する面に凹部３６が形成された構成であってもよい。これにより、第１鍔部３１の周縁部と接合材２との間の接合強度を向上させることができる。また、図１３に示すように、第１鍔部３１の周縁部における台金１に対向する面に凹部３７が形成された構成であってもよい。これにより、第１鍔部３１の周縁部と接合材２との間の接合強度を向上させることができる。 In the fifth embodiment, the uneven portion 34 is formed on the surface of the first flange 31 facing the contact point 4, and the uneven portion 35 is formed on the surface of the first flange 31 facing the base metal 1. There is. However, the configuration is not limited to this, and as shown in FIG. 12, a configuration may be adopted in which the concave portion 36 is formed in the surface facing the contact point 4 in the peripheral portion of the first flange portion 31. Thereby, the bonding strength between the peripheral portion of the first flange 31 and the bonding material 2 can be improved. Further, as shown in FIG. 13, a configuration may be adopted in which a concave portion 37 is formed in the peripheral portion of the first flange portion 31 on the surface facing the base metal 1. Thereby, the bonding strength between the peripheral portion of the first flange 31 and the bonding material 2 can be improved.
　１　台金、２　接合材、３　リベット、４　接点、５　接合用コレット、１１　貫通孔、１２　第１面、１３　第２面、２１　第１接合材、２２　第２接合材、３１　第１鍔部、３２　脚部、３３　第２鍔部、３４　凹凸部、３５　凹凸部、３６　凹部、３７　凹部、４１　凹凸部、４２　凹部。 1 base metal, 2 joining material, 3 rivets, 4 contacts, 5 joining collet, 11 through holes, 12 1st surface, 13 2nd surface, 21 1st bonding material, 22 2nd bonding material, 31 1st collar part , 32 legs, 33 second brim portion, 34 concave-convex portion, 35 concave-convex portion, 36 concave portion, 37 concave portion, 41 concave-convex portion, 42 concave portion.

Claims (7)

  1. 　板形状に形成され、板厚方向に貫通孔が形成された台金と、
    　前記台金の第１面に設けられた接合材と、
    　前記接合材を介して前記台金に接合された接点と、
    　前記第１面に対向し、前記接合材の内部に設けられた第１鍔部、前記第１鍔部と一体に形成され、前記貫通孔に挿入された脚部および前記脚部に一体に形成され、前記台金の第２面に対向する第２鍔部を有するリベットと
    　を備え、
    　前記接合材は、前記リベットによって、前記第１面に押し付けられている電気接触子。     A base metal formed in a plate shape and having a through hole formed in the plate thickness direction,
    A bonding material provided on the first surface of the base metal,
    A contact bonded to the base metal through the bonding material,
    A first brim portion facing the first surface, provided inside the bonding material, integrally formed with the first brim portion, and formed integrally with the leg portion and the leg portion inserted into the through hole. And a rivet having a second collar portion facing the second surface of the base metal,
    The electrical contactor in which the bonding material is pressed against the first surface by the rivet.
  2. 　前記接点の周縁部に対して重ねられた前記接合材の部分は、前記リベットによって、前記第１面に押し付けられている請求項１に記載の電気接触子。 The electric contactor according to claim 1, wherein a portion of the joining material, which is overlapped with a peripheral portion of the contact, is pressed against the first surface by the rivet.
  3. 　前記第１鍔部における前記接点に対向する面および前記第１鍔部における前記台金に対向する面の少なくとも一方には、凹凸部が形成されている請求項１または請求項２に記載の電気接触子。 The electricity according to claim 1 or 2, wherein an uneven portion is formed on at least one of a surface of the first flange portion facing the contact and a surface of the first flange portion facing the base metal. Contactor.
  4. 　前記第１鍔部の周縁部における前記接点に対向する面および前記第１鍔部の周縁部における前記台金に対向する面の少なくとも一方には、凹部が形成されている請求項１から請求項３までの何れか一項に記載の電気接触子。 The recess is formed in at least one of a surface of the peripheral portion of the first flange portion facing the contact point and a surface of the peripheral portion of the first flange portion facing the base metal. The electrical contactor according to any one of items 1 to 3.
  5. 　板形状の台金の第１面に第１接合材を塗布する第１接合材塗布工程と、
    　前記第１接合材塗布工程の後、前記台金に形成された貫通孔にリベットの脚部を挿入して、前記リベットの第１鍔部を前記第１接合材に重ねるリベット脚部挿入工程と、
    　前記リベット脚部挿入工程の後、前記第１鍔部および前記第１接合材に第２接合材を塗布して、前記第１鍔部を前記第１接合材と前記第２接合材との間に配置する第２接合材塗布工程と、
    　前記第２接合材塗布工程の後、前記第２接合材に接点を重ね、前記接点、前記第１接合材および前記第２接合材を積層方向に圧縮するとともに加熱して、前記第１接合材および前記第２接合材からなる接合材を介して、前記接点、前記リベットおよび前記台金を互いに接合する接点接合工程と、
    　前記接点接合工程の後、前記脚部を変形させて、前記台金の第２面に対向する第２鍔部を前記リベットに形成する脚部変形工程と
    　を備え、
    　前記脚部変形工程において、前記接合材は、前記リベットによって、前記第１面に押し付けられる電気接触子の製造方法。     A first bonding material applying step of applying a first bonding material to the first surface of the plate-shaped base metal;
    A rivet leg inserting step of inserting a rivet leg into a through hole formed in the base metal after the first joining material applying step and stacking the first brim portion of the rivet on the first joining material; ,
    After the step of inserting the rivet leg portion, a second bonding material is applied to the first brim portion and the first bonding material, and the first brim portion is provided between the first bonding material and the second bonding material. A second bonding material applying step which is arranged in
    After the step of applying the second bonding material, a contact is placed on the second bonding material, and the contact, the first bonding material, and the second bonding material are compressed in the stacking direction and heated to form the first bonding material. And a contact bonding step of bonding the contact, the rivet, and the base metal to each other via a bonding material composed of the second bonding material,
    After the contact bonding step, the leg portion is deformed to form a second collar portion facing the second surface of the base metal on the rivet, the leg portion deforming step,
    In the leg deforming step, the method for manufacturing an electric contact in which the joining material is pressed against the first surface by the rivet.
  6. 　前記第１接合材および前記第２接合材は、金属微粒子を含んでいる請求項５に記載の電気接触子の製造方法。 The method for manufacturing an electric contact according to claim 5, wherein the first bonding material and the second bonding material contain fine metal particles.
  7. 　前記金属微粒子は、Ａｇ微粒子またはＣｕ微粒子である請求項６に記載の電気接触子の製造方法。 The method for manufacturing an electric contact according to claim 6, wherein the metal fine particles are Ag fine particles or Cu fine particles.
PCT/JP2018/044211 2018-11-30 2018-11-30 Electric contactor and method of manufacturing same WO2020110295A1 (en)

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JPS57107519A (en) * 1980-12-25 1982-07-05 Tanaka Precious Metal Ind Method of produding composite electric contact
JPH06111671A (en) * 1992-09-28 1994-04-22 Mitsubishi Electric Corp Electrode for switch and its manufacture
JP2016207380A (en) * 2015-04-20 2016-12-08 三菱電機株式会社 Electric contactor and manufacturing method thereof

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GB910859A (en) * 1959-12-01 1962-11-21 Gibson Electric Company Method of making composite electrical contact bodies
US3562467A (en) * 1969-06-04 1971-02-09 Engelhard Min & Chem Electrical contact
JPH02227919A (en) * 1989-03-01 1990-09-11 Tanaka Kikinzoku Kogyo Kk Rivet type contact
DE112013005976B4 (en) * 2012-12-14 2023-03-16 Tanaka Kikinzoku Kogyo K.K. Rivet contact and method of making same
JP2013239437A (en) * 2013-05-02 2013-11-28 Tanaka Kikinzoku Kogyo Kk Rivet contact and manufacturing method therefor
JP6053612B2 (en) * 2013-05-29 2016-12-27 三菱電機株式会社 Electrical contactor for circuit breaker and manufacturing method thereof
KR20160040585A (en) * 2013-08-06 2016-04-14 가부시키가이샤 토쿠리키 혼텐 Electric contact point and contact element

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Publication number Priority date Publication date Assignee Title
JPS57107519A (en) * 1980-12-25 1982-07-05 Tanaka Precious Metal Ind Method of produding composite electric contact
JPH06111671A (en) * 1992-09-28 1994-04-22 Mitsubishi Electric Corp Electrode for switch and its manufacture
JP2016207380A (en) * 2015-04-20 2016-12-08 三菱電機株式会社 Electric contactor and manufacturing method thereof

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CN113168971B (en) 2022-07-22
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JPWO2020110295A1 (en) 2021-02-15

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