JP2008192602A - Connection structure of terminal member, connection method of terminal member, electronic component, and switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of a terminal member capable of achieving a reliable electric connection without forming a terminal into a special shape. <P>SOLUTION: A flat plate section of a fixed terminal (6), 7 and a flat plate section of a connection terminal 11 with a lead wire attaching section 13 are superposed to each other. By subjecting the superposed portion to a shear and plastic deformation due to the driving of a shear punch thereto; a new outer end face 11a generating due to the shear of the connection terminal 11 and a new inner end face (6a), 7a generating due to the shear of the fixed terminal (6), 7 are closely jointed to each other so as not to contact the outside air. By subjecting the superposed portion to only a plastic deformation without a shear due to the driving of a shear punch, a new outer end face 11a generating due to the plastic deformation of the connection terminal and a new inner end face generating due to the plastic deformation of the fixed terminal may be closely jointed to each other so as not to contact the outside air. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connection member suitable for connecting a terminal member having a flat plate portion, for example, a terminal of a built-in switch and a connection terminal for connecting a conducting wire, a connection method, and an electronic component and a switch using them.

  Conventionally, for example, a limit switch includes a built-in switch, and an internal terminal of the built-in switch is pulled out to the outside through a terminal fitting having a terminal screw (for example, see Patent Document 1).

As a method of electrically connecting the internal terminal of the built-in switch and the terminal to be pulled out to the outside, a connection structure using welding connection such as resistance welding, spot welding, laser welding, or ultrasonic welding, or terminals to each other A connecting structure for soldering and joining, a boss that is stamped and formed on one terminal is inserted into the connecting hole of the mating terminal and caulked and deformed, or a rivet is inserted across the overlapping part of both terminals and caulked and deformed A connection structure using mechanical coupling such as rivet caulking is possible.
JP-A-2005-79041

  In the connection structure using the above welded connection, since the terminals are welded together internally, it is not possible to check the connection condition from the outside, and a nondestructive inspection cannot be performed. It becomes difficult.

  On the other hand, in connection structures using mechanical connection such as soldering and caulking, it is possible to check the connection condition from the outside as a shape change, so non-destructive inspection is possible and quality reliability is ensured. However, it is necessary to build the terminal shape into a shape that is easy to solder or that is suitable for caulking and bonding. Will increase the cost.

  In particular, in the boss caulking coupling in which the caulking boss is driven out to one terminal, it becomes an obstacle when the terminal is press-fitted into the case, and the terminal assembling form is restricted. Further, since the height of the boss to be launched is limited by the thickness of the base material of the terminal, the thickness of the mating terminal to be coupled is limited.

  Further, in the rivet caulking and joining, not only rivets are separately required, but also a rivet supply facility is required in the joining process, which tends to increase costs.

  The present invention has been made by paying attention to such a situation, and without making a special shape in the terminal, a terminal member capable of performing a reliable electrical connection with stable quality. It is an object of the present invention to provide a connection structure, a method for connecting terminal members, an electronic component and a switch using these.

  (1) The terminal member connection structure of the present invention is a terminal member connection structure for electrically connecting two terminal members, wherein the flat plate portions of the two terminal members are overlapped with each other and the shear load in the punching direction is obtained. The new outer end surface that is plastically deformed by the plastic deformation of one terminal member and the new inner end surface that is generated by the plastic deformation of the other terminal member are in close contact with each other.

  The terminal member may be the terminal itself, a member such as a contact piece constituting the terminal, a terminal component such as a cut clamp, or a member used for connection.

  Both terminal members may be made of the same metal material or different metal materials.

  It is preferable that the overlapped flat plate portion is plastically deformed with respect to a rectangular region, for example, by a shearing load in the punching direction in the longitudinal direction and the width direction (direction orthogonal to the longitudinal direction).

  The plastic deformation is preferably performed using a shearing tool including a shearing punch and a die.

  The new outer end surface or inner end surface generated by plastic deformation refers to the outer end surface or inner end surface newly generated by stretching by plastic deformation.

  It is preferable that the new outer end surface generated by the plastic deformation of one terminal member and the new inner end surface generated by the plastic deformation of the other terminal member are in close contact with each other without a gap, and the contact area is wide. Is preferred.

  According to the present invention, the overlapped portion of the flat plate portion is plastically deformed, and a new outer end surface generated by the plastic deformation of one terminal member and a new inner end surface generated by the plastic deformation of the other terminal member are: Since they are bonded in close contact with each other, clean end surfaces that have been newly stretched by plastic deformation and have no adhesion of impurities, etc., are bonded in close contact with each other, so a highly reliable electrical connection can be obtained. And mechanically connected.

  As a result, it is not necessary to build the terminal member into a special shape suitable for soldering or boss caulking, and connection can be made with a stable quality in a flat state.

  (2) The connection structure of the terminal member of the present invention is a connection structure of the terminal member that electrically connects the two terminal members, and the flat plate portions of the both terminal members are overlapped and sheared and plastically deformed. The new outer end surface generated by the shearing of one terminal member and the new inner end surface generated by the shearing of the other terminal member are in close contact with each other.

  The overlapped flat plate portion is preferably sheared and plastically deformed, for example, for a rectangular region, the longitudinal direction of the rectangular region is cut, and the width direction (direction perpendicular to the longitudinal direction) is not cut. It is preferable to plastically deform.

  Shearing and plastic deformation are preferably performed using a shearing tool comprising a shearing punch and a die.

  It is preferable that the new outer end surface generated by the shearing of one terminal member and the new inner end surface generated by the shearing of the other terminal member are in close contact with each other without a gap, and the wider contact area is preferable.

  According to the present invention, the overlapped portion of the flat plate portion is sheared and plastically deformed, and a new outer end surface generated by the shearing of one terminal member and a new inner end surface generated by the shearing of the other terminal member are: Since they are bonded in close contact, clean end faces that are free from adhesion of oxide film or impurities newly generated by shearing are bonded in close contact, so that a highly reliable electrical connection can be obtained and the machine Connected.

  As a result, it is not necessary to form the terminal member in a special shape suitable for soldering or boss caulking, and connection can be made with a stable quality in a flat state.

  (3) In one embodiment of the connection structure of the terminal member of the present invention described in (1) above, the flat plate portions are overlapped on a die and plastically deformed by driving a punch into the overlapping portion. The outer end face of the one terminal member is in close contact with and joined to the inner end face of the other terminal member so as not to contact outside air.

  On the die, it is preferable that one terminal member is disposed on the upper side, that is, the punch side, and the other terminal member is disposed on the lower side. Further, in order to firmly adhere the outer end face of one terminal member to the inner end face of the other terminal member, the metal material constituting the other terminal member is made stronger than the metal material constituting the one terminal member. A hard material is preferable.

  According to this embodiment, one terminal member is plastically deformed and stretched and compressed, and its outer end surface is plastically deformed toward the inner end surface side of the other terminal member. The end face and the inner end face of the other terminal member are pressed so as to bite into each other, and are joined in close contact with each other without a gap that does not contact the outside air. It can be effectively prevented to increase the reliability of the electrical connection, and the bonding strength is improved.

  (4) In one embodiment of the connection structure of the terminal member of the present invention of (2), the flat plate portions are overlapped on a die and sheared by punching into the overlapping portion, The outer end face of the one terminal member is in close contact with and joined to the inner end face of the other terminal member so as not to contact outside air.

  According to this embodiment, one terminal member is sheared and compressed, and its outer end surface is plastically deformed toward the inner end surface side of the other terminal member, whereby the outer end surface of one terminal member and the other terminal The inner end surface of the member is crimped so that it bites into each other, and is bonded in close contact with no gap that does not contact the outside air, so that the joint surface is effectively prevented from being corroded by the outside air. In addition, the reliability of electrical connection can be increased, and the bonding strength is improved.

  (5) In the embodiment of the above (3) or (4), the amount of punch punching into the die is determined based on the close contact state between the outer end face of the one terminal member and the inner end face of the other terminal member. Is controlled by.

  The close contact state refers to the close contact strength, the close contact area, and the like, and a close contact state without voids is preferable so that outside air does not enter.

  According to this embodiment, the close contact state between the outer end surface of one terminal member and the inner end surface of the other terminal member is controlled, for example, by the outside air, by controlling the amount of driving of the die onto the flat plate portion superimposed on the die. In addition to being able to adhere without gaps so as not to come into contact with each other, it is possible to secure a tight contact area, thereby improving the reliability of electrical connection and securing necessary bonding strength.

  (6) In the embodiment of (5) above, the contact state includes at least one of the contact area and the contact strength between the outer end surface and the inner end surface.

  According to this embodiment, it is possible to control at least one of the contact area and the contact strength between the outer end surface and the inner end surface according to the punching amount into the die, and thereby the electrical connection and the bond strength. Can be controlled.

  (7) In another embodiment of the terminal member connection structure of the present invention, either one of the two terminal members is a cut clamp that clamps and fixes the external conductor to the slit.

  According to this embodiment, external conductors can be connected in a form that is easy to attach and detach.

  (8) In still another embodiment of the terminal member connection structure of the present invention, either one of the two terminal members is a screw terminal that screw-connects an external conductor.

  According to this embodiment, it can be effectively used in a usage pattern in which a tension acts on the external conductor.

  (9) The terminal member connection method of the present invention is a terminal member connection method for electrically connecting two terminal members, wherein the flat plate portions of the both terminal members are overlapped on a die, and this overlap is performed. A punch is driven into the combined portion to cause plastic deformation, and a new outer end surface generated by the plastic deformation of one terminal member and a new inner end surface generated by the plastic deformation of the other terminal member are brought into close contact and joined.

  According to the present invention, the overlapped portion of the flat plate portion is plastically deformed, and a new outer end surface generated by the plastic deformation of one terminal member and a new inner end surface generated by the plastic deformation of the other terminal member are: Since they are bonded in close contact with each other, clean end faces that are newly formed by plastic deformation and have no adhesion of impurities, etc. will be bonded in close contact, and are electrically connected with high reliability. And mechanically connected.

  (10) The terminal member connection method of the present invention is a terminal member connection method for electrically connecting two terminal members, wherein the flat plate portions of the both terminal members are overlapped on a die, and this overlap is performed. A punch is driven into the combined portion and sheared and plastically deformed, and a new outer end surface generated by the shearing of one terminal member and a new inner end surface generated by the shearing of the other terminal member are brought into close contact and joined.

  According to the present invention, the overlapped portion of the flat plate portion is sheared and plastically deformed, and a new outer end surface generated by the shearing of one terminal member and a new inner end surface generated by the shearing of the other terminal member are: Because it is closely bonded and joined, clean end faces without adhesion of oxide film and impurities newly generated by shearing will be closely bonded and electrically connected with high reliability, Mechanically connected.

  (11) In one embodiment of the terminal member connection method of the present invention, the punching amount of the punch into the die is controlled, and the outer end surface of the one terminal member and the inner end surface of the other terminal member It controls the close contact state.

  According to this embodiment, the close contact state between the outer end surface of one terminal member and the inner end surface of the other terminal member is controlled, for example, by the outside air, by controlling the amount of driving of the die onto the flat plate portion superimposed on the die. In addition to being able to adhere without gaps so as not to come into contact with each other, it is possible to secure a tight contact area, thereby improving the reliability of electrical connection and securing necessary bonding strength.

  (12) The electronic component of the present invention includes the terminal member connection structure according to the present invention.

  According to the present invention, it is possible to obtain an electronic component in which both terminal members are electrically connected with high reliability and mechanically connected.

  (13) The switch according to the present invention is a switch in which a terminal protruding outward from the case and a terminal having a conductor mounting portion are electrically connected, and the flat portions of the two terminals are overlapped. A new outer end face that is plastically deformed by a shearing load in the punching direction and is generated by the plastic deformation of one terminal and a new inner end face that is generated by the plastic deformation of the other terminal are in close contact with each other.

  According to the present invention, since the connecting portion of the terminal has a flat plate shape, the entire terminal can be formed in a flat plate shape, press-fitted into the case, and can be fixed by penetration, facilitating automation of terminal assembly.

  (14) The switch according to the present invention is a switch in which a terminal protruding outward from the case and a terminal having a conductor mounting portion are electrically connected, and the flat portions of the two terminals are overlapped. A new outer end face that is sheared and plastically deformed and is generated by the shearing of one terminal and a new inner end face that is generated by the shearing of the other terminal are in close contact with each other.

  According to the present invention, since the connecting portion of the terminal has a flat plate shape, the entire terminal can be formed in a flat plate shape, press-fitted into the case, and can be fixed by penetration, facilitating automation of terminal assembly.

  (15) In one embodiment of the switch of the present invention according to (13), a new outer end face caused by the plastic deformation of the one terminal and a new inner end face caused by the plastic deformation of the other terminal are: It is tightly bonded so as not to contact the outside air.

  According to this embodiment, since the outer end surface of one terminal member is closely bonded to the inner end surface of the other terminal member in a state without a gap so as not to contact outside air, the bonding surface is corroded by outside air. Therefore, it is possible to effectively prevent the electrical connection and increase the reliability of the electrical connection and the bonding strength.

  (16) In one embodiment of the switch of the present invention described in (14) above, a new outer end surface generated by the shearing of the one terminal and a new inner end surface generated by the shearing of the other terminal are exposed to the outside air. It is closely attached and joined so as not to contact.

  According to this embodiment, since the outer end surface of one terminal member is closely bonded to the inner end surface of the other terminal member in a state without a gap so as not to contact outside air, the bonding surface is corroded by outside air. Therefore, it is possible to effectively prevent the electrical connection and increase the reliability of the electrical connection and the bonding strength.

  (17) The switch of the present invention includes a switching mechanism and a plurality of contact modules each having a pair of fixed terminals projecting, which are positioned in a holder and supported in parallel, and the connection terminal having a conductor mounting portion is Corresponding to the fixed terminal, the holder is positioned and supported in parallel, the fixed terminal and the connection terminal are electrically connected, and the holder supporting the contact module and the connection terminal is incorporated in the switch case and operated from the outside. A switch that opens and closes a plurality of circuits by pressing the plunger of each contact module with an operating member, and the plate portions of the fixed terminal and the connection terminal are overlapped and plastically deformed by a shearing load in the punching direction. A new outer end surface caused by the plastic deformation of one terminal and the plastic deformation of the other terminal. A new inner end face are joined in close contact.

  The contact module is preferably configured by assembling a switching mechanism (contact mechanism) to the module case.

  According to the present invention, the flat plate portion of the connection terminal can be easily and reliably connected to the flat plate portion of the fixed terminal using plastic deformation caused by a shear load, so that a switch having various conductor connection portions is configured. And it is easy to meet a wide range of needs.

  (18) The switch according to the present invention includes a switching mechanism and a plurality of contact modules each having a pair of fixed terminals projecting. Corresponding to the fixed terminal, the holder is positioned and supported in parallel, the fixed terminal and the connection terminal are electrically connected, and the holder supporting the contact module and the connection terminal is incorporated in the switch case and operated from the outside. A switch that opens and closes a plurality of circuits by pressing a plunger of each contact module with an operating member, wherein the fixed plate and the flat portion of the connection terminal are overlapped and sheared and plastically deformed, The new outer end face caused by the shearing of the terminal and the new inner end face caused by the shearing of the other terminal are in close contact with each other. They are joined.

  According to the present invention, the flat plate portion of the connection terminal can be easily and reliably connected to the flat plate portion of the fixed terminal by using shear, so that it is possible to configure a switch having various conductor connection portions. It is easy to meet a wide range of needs.

  (19) In one embodiment of the switch of the present invention of (17), a new outer end face caused by the plastic deformation of the one terminal and a new inner end face caused by the plastic deformation of the other terminal are: Insulating ribs provided in the holder are interposed between the adjacent terminals which are in close contact with each other so as not to contact the outside air and are supported in parallel to the holder.

  According to this embodiment, it is possible to effectively prevent the joint surfaces of both terminals from being corroded by the outside air and improve the reliability of the electrical connection, while insulating between adjacent terminals supported in parallel. It is effective in opening and closing a plurality of circuits with high reliability.

  (20) In one embodiment of the switch of the present invention described in (18) above, a new outer end surface generated by the shearing of the one terminal and a new inner end surface generated by the shearing of the other terminal are exposed to the outside air. Insulating ribs provided on the holder are interposed between the adjacent terminals which are closely contacted and joined so as not to contact each other and are supported in parallel by the holder.

  According to this embodiment, it is possible to effectively prevent the joint surfaces of both terminals from being corroded by the outside air and improve the reliability of the electrical connection, while insulating between adjacent terminals supported in parallel. It is effective in opening and closing a plurality of circuits with high reliability.

  (21) In another embodiment of the switch of the present invention, the operation member is supported by the holder.

  According to this embodiment, the relative position between the contact module and the operation member assembled in the common holder is ensured as predetermined, and each contact module is accurately operated with the operation member regardless of the holder assembly error in the switch box. Can do.

  (22) In the embodiment of the above (21), the operation member is formed widely in the contact module parallel direction, and both end portions in the width direction of the operation member are swingably supported by the holder.

  According to this embodiment, the position and posture of the operating member can be stabilized by supporting the operating member with a long span.

  According to the present invention, the overlapped portions of the flat plate portions of the terminal are at least plastically deformed, and the clean end surfaces to which the newly formed oxide film or impurities are not adhered are brought into close contact with each other. High electrical connection is obtained. In addition, highly reliable electrical connection is possible in a state in which the terminals are flattened without being formed into a special shape.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an external perspective view of a small contact module 1 which is an example of an electronic component to which the terminal member connection structure of the present invention is applied, FIG. 2 is a longitudinal front view thereof, FIG. 4 shows a longitudinal side view thereof.

  In the contact module 1, a plunger 3 that can be slid up and down, a switching mechanism 4 that is contacted and separated by the vertical movement of the plunger 3, and a return spring 5 that slides and urges the plunger 3 upward are assembled to the module case 2. It has a structure.

  The switching mechanism 4 includes a pair of left and right fixed terminals 6 and 7 that are press-fitted and fixed to the front wall of the module case 2 with an appropriate insulation interval, and fixed contacts 6a and 7a provided at the ends of the fixed terminals 6 and 7. And a movable piece 8 made of a conductive metal plate provided with movable contacts 8a and 8b opposite to each other on both the left and right sides. The plunger 3 supporting the movable piece 8 is slid upwardly by a return spring 5. The upper end of the plunger 3 protrudes from the upper surface of the module case 2, and the fixed terminals 6 and 7 protrude from the lower surface of the module case 2.

  On both the left and right sides of the plunger 3, long and long ridges 9 are provided, and on the left and right inner surfaces of the module case 2, linear guide grooves 10 for engaging the ridges 9 so as to be movable up and down are formed. The plunger 3 is supported by the guide grooves 10 and the protrusions 9 so as to be slidable in the vertical direction.

  The module case 2 includes a box-shaped case main body 2a and an upper cover 2b fitted and fixed to the upper end thereof. The movable piece 8 and the return spring 5 are pre-assembled with the plunger 3, and the pre-assembled plunger is assembled. 3 is assembled into the case main body 2a from above, and the flat fixed terminals 6 and 7 whose upper portions are bent are press-fitted into the case main body 2a from above, and then the upper cover 2b is fitted to the upper end of the case main body 1a. The contact module 1 is completed by fastening.

  As shown in FIG. 1, for example, connecting terminals 11 made of phosphor bronze are connected and fixed to fixed terminals 6, 7 made of brass, for example, which protrude from the lower part of the module case 2. Is done.

  In this embodiment, the fixed terminals 6 and 7 and the connection terminal 11 have a width of, for example, 1.8 mm and a thickness of, for example, 0.5 mm.

  The connection terminal 11 of this embodiment is formed with a cut plumb specification lead wire connection portion 13 that sandwiches and holds an external lead wire in a divergent slit 12 formed in the upper portion. As shown in FIGS. The lower flat plate portion 11 is connected to the protruding flat plate portion of the fixed terminals 6 and 7 through the caulking coupling portion 14.

  The caulking joint portion 14 is formed by shear bonding using a shear bonding tool including a shear punch and a die.

  In this embodiment, as shown in FIG. 5, the caulking coupling portion 14 has a rectangular shape, and the caulking coupling portion 14 has a length in the longitudinal direction of 2 mm, for example, and a length in the width direction is, for example, 0.6 mm.

  FIG. 7 is a schematic cross-sectional view showing the procedure of shear bonding of this embodiment, and is a cross-sectional view corresponding to the direction of arrows AA in FIG.

  First, as shown in FIG. 7 (a), the flat portions of the fixed terminals (6), 7 and the connection terminal 11 are overlapped on the die 30, and as shown in FIGS. 7 (b), (c). The shearing punch 31 is driven into the rectangular region from the side of the connection terminal 11 to the die 30 and is recessed into a long groove shape in the terminal longitudinal direction (perpendicular to the paper surface of FIG. 7).

  The upper and lower end portions (both short sides of the rectangular region) of the caulking joint portion 14 are plastically deformed without being sheared (cut) as shown in FIG. 6, and the width direction of the caulking joint portion 14 (in FIG. 7). Both end portions (both long sides of the rectangular area) in the left-right direction are sheared as shown in FIGS.

  As shown in FIG. 7D, the sheared connection terminal 11 is compressed and plastically deformed so as to expand in the width direction, and is generated by shearing as shown in a partially enlarged view of FIG. The new outer end face 11a is tightly joined tightly and without gaps so as to bite into the new inner end faces (6a) and 7a generated by shearing of the fixed terminals (6) and 7, thereby electrically and mechanically. Connected.

  In this way, the amount of stroke (stroke) of the shear punch 31 to the die 30 is such that the new outer end face 11a of the connection terminal 11 is in close contact with the new inner end faces (6a) and 7a of the fixed terminals (6) and 7 without any gaps. Volume) and the load during driving.

  FIG. 9 is a view for explaining a joining state of the outer end face 11a of the connection terminal 11 and the inner end faces (6a) and 7a of the fixed terminals (6) and 7. FIG.

  First, as shown in FIG. 9A, the new outer end surface 11a generated by the shearing of the connection terminal 11 is opposed to the new inner end surfaces (6a) and 7a generated by the shearing of the fixed terminals (6) and 7. Until sheared.

  Each of the end surfaces 11a newly generated by shearing; (6a), 7a is a clean surface free from adhesion of an oxide film or impurities, but since it is a sheared surface or fractured surface generated by shearing, it has fine irregularities. And there are voids.

  As the shearing progresses, the connection terminal 11 that has been sheared is compressed by the shear punch 31 and the die 30 described above, and as a result, the outer end surface 11a becomes the inner end surface (6a), 7 of the fixed terminal (6), 7. 9 (b) and 9 (c), the end faces 11a; (6a) and 7 are pressure-bonded to each other so that there is no gap, and are firmly joined.

  In this way, the clean end surfaces 11a (6a) and 7 generated by shearing are joined in close contact so that there is no gap and does not come into contact with the outside air. It is possible to improve the reliability of connection and increase the bonding strength.

  In addition, the clean end faces 11a; (6a) and 7 are brought into close contact with each other, and at the same time, interfacial interactions such as metal bonding and interdiffusion occur at the bonding interface due to the shear heat and the press load accompanying the shearing process. Joining by pressure welding is assumed, and it can be expected to obtain a more reliable electrical connection.

  In order to evaluate the reliability of such electrical connection, a test using a corrosive gas was performed.

  That is, a brass plate and a phosphor bronze plate having the same size as each of the terminals 11; 6, 7 described above were superposed on a die and sheared and joined as described above by a shear punch.

Using a mixed gas of hydrogen sulfide (H ₂ S) and sulfur dioxide (SO ₂ ), a gas test was conducted for 96 hours in accordance with JEIDA-38-1984 and JEIDA-39-1984.

  The resistance value of the joint is 1.18 mΩ before the test and 1.66 mΩ after the test, and even after the test, a sufficiently small resistance value can be secured with respect to the design target value of 5 mΩ. At the same time, the fluctuation is small.

  The joint part after 96 hours was forcibly separated and the joint surface was observed. As a result, the upper and lower mere mating surfaces S of the upper surfaces of the fixed terminals (6) and 7 and the lower surface of the connection terminal 11 shown in FIG. The contact surface between the outer end surface 11a of the connection terminal 11 and the inner end surfaces (6a) and 7 of the fixed terminals (6) and 7 newly generated by shearing is not discolored and is not corroded. It could be confirmed.

  10 and 11 schematically show a switch 21 configured to open and close three circuits using the three contact modules 1 described above.

  The switch 21 includes a holder 22 for supporting the three contact modules 1 and the connection terminals 11, a front / rear split type switch box 23 to which the holder 22 is connected and fixed, and a pair of left and right connected to the upper portion of the holder 22. And a torsion spring 25 for swinging and returning the operating member 24 from the outside, and the like. By swinging and slidingly operating the plunger 3 of each contact module 1, the three circuits are opened and closed simultaneously.

  The three contact modules 1 are positioned and supported in parallel with the back surface of the holder 22, and each connection terminal 11 is placed on the front surface of the holder 22 so as to overlap with the protruding portions of the fixed terminals 6 and 7 in each contact module 1. Is positioned and supported. As shown in FIG. 11, a large number of insulating ribs 22b project from the front surface of the holder 22, and each connecting terminal 11 is inserted and positioned between the insulating ribs 22b. Is electrically isolated by the insulating rib 22b. Then, after the contact module 1 and the connection terminal 11 are positioned and supported by the holder 22, the holder module 22 is carried into a caulking device, and punching processing is performed on the overlapping portions of the fixed terminals 6 and 7 and the connection terminal 11, as described above. The fixed terminals 6 and 7 and the connection terminal 11 are caulked and connected by shearing.

  After that, the operation member 24 and the torsion spring 25 are assembled to the holder 22, the contact module 1, the connection terminal 11, and the holder 22 assembled with the operation member 24 are assembled into the disassembled switch box 23 and fixed with screws. In addition, the switch box 23 that has been disassembled is joined from the front and the back, and the switch 21 is completed. Although not shown, an operation head having various specifications for pressing the operation member 24 can be mounted on the upper surface of the switch box 23.

(Other examples)
The present invention can also be implemented in the following forms.

  (1) In the above-described embodiment, although both ends in the width direction of the caulking coupling portion 14 (both long sides of the rectangular region) are completely sheared as shown in FIG. 7D and FIG. As another embodiment of the present invention, as shown in FIG. 12, it may be stopped by plastic deformation without being completely sheared.

  In this case, the connection terminal 11 and the fixed terminals (6) and 7 are each plastically deformed by a shearing load in the punching direction, and are stretched by the plastic deformation to generate new surfaces, respectively. The new inner end faces (6a) and 7a of the fixed terminals (6) and 7 are firmly joined to be electrically and mechanically connected.

  Each of the end surfaces 11a; (6a), 7a newly generated by being stretched by plastic deformation becomes a clean surface free from adhesion of an oxide film or impurities, and can improve the reliability of electrical connection.

  (2) As shown in FIG. 13, the lead wire mounting portion 13 of the connection terminal 11 can be applied to a screw terminal constituted by a screw tightening hole 15 for screw-connecting an external lead wire.

  (3) In an electronic component, for example, a relay, the present invention can be used for connection between a terminal of a coil housed in a case and a connection terminal 11 exposed to the outside of the case.

  (4) The terminal to be inserted may be applied to the connection of the pair of terminal members of a terminal block including a plurality of connection terminals sandwiched between a pair of terminal members (contact pieces) having spring properties.

  The present invention is useful for electrical connection of terminals of various electronic components.

It is a perspective view which shows a contact module and a connection terminal. It is a vertical front view of a contact module. It is a vertical front view of a contact module. It is a vertical side view of a contact module. It is a perspective view of the contact module which connected the connection terminal. It is a side view of the contact module which connected the connection terminal. FIG. 6 is a schematic cross section seen from the direction of arrows AA in FIG. 5 showing the procedure for joining by shearing. It is sectional drawing which shows the junction part by shearing. It is sectional drawing for demonstrating the change of the state of a joint surface. It is a schematic front view of the switch using a contact module. It is a schematic side view of the switch using a contact module. It is sectional drawing of the junction part of other embodiment. It is a perspective view of the contact module which connected the connecting terminal of the other Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Contact module 2 Module case 4 Switching mechanism 6 Fixed terminal 7 Fixed terminal 11 Connection terminal 12 Slit 13 Conductor connection part 14 Caulking coupling part 15 Screw tightening hole 22 Holder 22b Insulating rib 23 Switch box 24 Operation member

Claims (22)

A terminal member connection structure for electrically connecting two terminal members,
The flat plate portions of the two terminal members are overlapped and plastically deformed by a shear load in the punching direction, and a new outer end surface generated by the plastic deformation of one terminal member and a new one generated by the plastic deformation of the other terminal member. A terminal member connection structure, characterized in that the inner end face is closely bonded and joined. A terminal member connection structure for electrically connecting two terminal members,
The flat plate portions of the two terminal members are overlapped and sheared and plastically deformed, and a new outer end surface generated by the shearing of one terminal member and a new inner end surface generated by the shearing of the other terminal member are brought into close contact with each other. Terminal member connection structure characterized by being joined together.   The flat plate portions are overlapped on a die and plastically deformed by punching into the overlapping portion, and the outer end surface of the one terminal member is on the inner end surface of the other terminal member, The terminal member connection structure according to claim 1, wherein the terminal member connection structure is tightly bonded so as not to contact outside air.   The flat plate portions are overlapped on a die and sheared by punching into the overlapping portion, and the outer end surface of the one terminal member is exposed to the inner end surface of the other terminal member. The terminal member connection structure according to claim 2, wherein the terminal member connection structure is tightly bonded so as not to come into contact with the terminal member.   The connection of the terminal member according to claim 3 or 4, wherein a close contact state between the outer end surface of the one terminal member and the inner end surface of the other terminal member is controlled by an amount of punching into the die. Construction.   The terminal member connection structure according to claim 5, wherein the contact state includes at least one of a contact area and a contact strength between the outer end surface and the inner end surface.   The connection structure for a terminal member according to any one of claims 1 to 6, wherein one of the two terminal members is a cut clamp that sandwiches and fixes an external conductor to the slit.   The terminal member connection structure according to any one of claims 1 to 6, wherein one of the two terminal members is a screw terminal for screw-connecting an external conductor. A terminal member connection method for electrically connecting two terminal members,
The flat plate portions of the two terminal members are overlapped on a die, and a punch is driven into the overlapped portion to cause plastic deformation, and a new outer end surface generated by the plastic deformation of one terminal member and the other terminal member A terminal member connection method, wherein a new inner end face produced by the plastic deformation is bonded in close contact. A terminal member connection method for electrically connecting two terminal members,
The flat portions of the two terminal members are overlapped on the die, punched into the overlapped portion, sheared and plastically deformed, and a new outer end surface generated by the shearing of one terminal member and the other terminal A terminal member connection method, wherein a new inner end face generated by the shearing of the member is brought into intimate contact with each other.   The terminal member according to claim 9 or 10, wherein the amount of punching into the die is controlled to control a close contact state between the outer end surface of the one terminal member and the inner end surface of the other terminal member. Connection method.   An electronic component comprising the terminal member connection structure according to any one of claims 1 to 8. A switch in which a terminal protruding outward from the case and a terminal having a conductor mounting portion are electrically connected,
The flat plate portions of both terminals are overlapped and plastically deformed by a shear load in the punching direction, and a new outer end surface generated by the plastic deformation of one terminal, and a new inner end surface generated by the plastic deformation of the other terminal, The switch is characterized by being closely attached and joined. A switch in which a terminal protruding outward from the case and a terminal having a conductor mounting portion are electrically connected,
The flat plate portions of both terminals are overlapped and subjected to shearing and plastic deformation, and a new outer end surface generated by the shearing of one terminal and a new inner end surface generated by the shearing of the other terminal are brought into close contact and joined. A switch characterized by   The new outer end surface generated by the plastic deformation of the one terminal and the new inner end surface generated by the plastic deformation of the other terminal are closely contacted and joined so as not to contact outside air. switch.   The switch according to claim 14, wherein a new outer end surface generated by the shearing of the one terminal and a new inner end surface generated by the shearing of the other terminal are in close contact with each other so as not to contact outside air. A plurality of contact modules having a built-in switching mechanism and protruding a pair of fixed terminals are positioned and supported in parallel on a holder, and a connection terminal having a conductor mounting portion is connected to the holder corresponding to the fixed terminal. Positioning and supporting in parallel, the fixed terminal and the connection terminal are electrically connected, the contact module and the holder supporting the connection terminal are assembled in the switch case, and the plunger of each contact module is operated by an operation member operated from the outside A switch that opens and closes multiple circuits by pressing
The flat plate portions of the fixed terminal and the connection terminal are overlapped and plastically deformed by a shearing load in the punching direction, and are generated by a new outer end face caused by the plastic deformation of one terminal and the plastic deformation of the other terminal. A switch characterized in that a new inner end face is bonded and joined. A plurality of contact modules having a built-in switching mechanism and protruding a pair of fixed terminals are positioned and supported in parallel on a holder, and a connection terminal having a conductor mounting portion is connected to the holder corresponding to the fixed terminal. Positioning and supporting in parallel, the fixed terminal and the connection terminal are electrically connected, the contact module and the holder supporting the connection terminal are assembled in the switch case, and the plunger of each contact module is operated by an operation member operated from the outside A switch that opens and closes multiple circuits by pressing
The flat plate portions of the fixed terminal and the connection terminal are overlapped and sheared and plastically deformed, and a new outer end surface generated by the shearing of one terminal and a new inner end surface generated by the shearing of the other terminal are in close contact with each other. A switch characterized by being joined. A new outer end face caused by the plastic deformation of the one terminal and a new inner end face caused by the plastic deformation of the other terminal are brought into close contact with each other so as not to contact outside air, and are joined.
The switch according to claim 17, wherein an insulating rib provided on the holder is interposed between the adjacent terminals supported in parallel to the holder. The new outer end face caused by the shearing of the one terminal and the new inner end face caused by the shearing of the other terminal are bonded and joined so as not to contact outside air,
The switch according to claim 18, wherein an insulating rib provided in the holder is interposed between the adjacent terminals supported in parallel to the holder.   The switch according to any one of claims 17 to 20, wherein the operation member is supported by the holder.   The switch according to claim 21, wherein the operation member is formed widely in the contact module parallel direction, and both end portions in the width direction of the operation member are swingably supported by the holder.

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