WO2021075056A1 - Contact switch and connection auxiliary pin - Google Patents

Contact switch and connection auxiliary pin Download PDF

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Publication number
WO2021075056A1
WO2021075056A1 PCT/JP2019/041163 JP2019041163W WO2021075056A1 WO 2021075056 A1 WO2021075056 A1 WO 2021075056A1 JP 2019041163 W JP2019041163 W JP 2019041163W WO 2021075056 A1 WO2021075056 A1 WO 2021075056A1
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WO
WIPO (PCT)
Prior art keywords
electric wire
wire insertion
conductive metal
contact switch
housing
Prior art date
Application number
PCT/JP2019/041163
Other languages
French (fr)
Japanese (ja)
Inventor
省吾 稲垣
林　亨
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/041163 priority Critical patent/WO2021075056A1/en
Priority to CN201980101366.9A priority patent/CN114600217B/en
Priority to JP2020511404A priority patent/JP6732155B1/en
Priority to KR1020227008977A priority patent/KR20220041941A/en
Publication of WO2021075056A1 publication Critical patent/WO2021075056A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/01—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member

Definitions

  • the present invention relates to a contact switch that opens and closes an electric current path, and a connection auxiliary pin that assists an electrical connection between the contact switch and an expansion device.
  • the contact switch that opens and closes the current path has a terminal connected to the power supply via the electric wire and a terminal connected to the load via the electric wire.
  • the electric wire connected to these terminals of the contact switch is stripped of the insulating coating at the end, and a connecting terminal for connecting to these terminals is attached to the portion where the insulating coating is stripped.
  • the screw type terminal has a screw with a washer and a conductive metal fitting, and by fastening the screw with a washer to a screw hole made in the conductive metal fitting, the connection terminal can be connected between the washer and the conductive metal fitting. Crimping. As a result, electrical continuity between the conductive metal fitting and the connection terminal is achieved. Screws are fastened to the conductive metal fittings using a tool such as a screwdriver. The screws are arranged with the screw heads facing the front so that the user of the contact switch can fasten the screws from the front.
  • connection terminal of the electric wire connected to the power supply When the connection terminal of the electric wire connected to the power supply is connected to the screw type terminal of the contact switch, the connection terminal is a washer and a conductive metal fitting along the arrangement direction of the terminal on the power supply side and the terminal on the load side. It is inserted between and.
  • the spring type terminal has a conductive metal fitting having a frame portion formed thereof and a leaf spring-shaped spring fitted in the frame portion, and holds the connection terminal inserted in the frame portion by the pressure of the spring. ..
  • electrical conduction between the conductive metal fitting and the connection terminal is achieved.
  • the opening of the electric wire insertion portion is directed to the front, and the connection terminal is inserted from the front of the contact switch.
  • a contact switch with a spring-type terminal completes wiring by inserting the connection terminal of the wire into the wire insertion part, so the man-hours for wiring work are less than those of a contact switch with a screw-type terminal. For this reason, in recent years, contact switches having spring-type terminals are often used.
  • a terminal on the power supply side or a terminal on the load side is used.
  • the expansion device that couples to the contact switch is equipped with a connecting conductor for coupling.
  • the connecting conductor of the expansion device is inserted between the washer and the conductive metal fitting along the arrangement direction of the terminal on the power supply side and the terminal on the load side. Then, the connecting conductor of the expansion device is crimped with the conductive metal fitting and the washer.
  • the connecting conductor of the expansion device is inserted into the electric wire insertion portion of the spring type terminal from the front of the contact switch.
  • the contact switch having a screw type terminal and the contact switch having a spring type terminal are different in the direction in which the connecting conductor of the expansion device is inserted. Further, the expansion device for the contact switch having the screw type terminal is coupled to the contact switch along the arrangement direction of the terminal on the power supply side and the terminal on the load side. On the other hand, an expansion device for a contact switch having a spring-loaded terminal is coupled to the front of the contact switch. Therefore, when the contact switch having the screw type terminal is replaced with the contact switch having the spring type terminal, it becomes impossible to combine the expansion device for the contact switch having the screw type terminal.
  • Patent Document 1 discloses a connecting unit that converts a connecting conductor for a screw type terminal into a connecting conductor for a spring type terminal.
  • an expansion device for a screw type terminal can be connected to a contact switch having a spring type terminal.
  • the present invention has been made in view of the above, and an object of the present invention is to obtain a contact switch capable of connecting an expansion device for a screw type terminal while suppressing an increase in man-hours while having a spring type terminal. ..
  • the present invention has a first electric wire insertion part into which an electric wire connected to a power source for supplying electric power to a load device is inserted, and an electric wire connected to the load device.
  • An opening / closing part that switches between electrically connecting or insulating the conductive metal fittings installed in the insertion parts, the conductive metal fittings of the first electric wire insertion part, and the conductive metal fittings of the second electric wire insertion part.
  • the rod-shaped connecting conductor is arranged in the arrangement direction of the first electric wire insertion portion and the second electric wire insertion portion until it comes into contact with the conductive metal fitting of the first electric wire insertion portion or the conductive metal fitting of the second electric wire insertion portion. It has a conductor insertion slot that can be inserted from the first direction.
  • the contact switch according to the present invention has an effect that it is possible to connect an expansion device for a screw type terminal while suppressing an increase in man-hours while having a spring type terminal.
  • Perspective view of the contact switch according to the first embodiment of the present invention Perspective view of the contact switch according to the first embodiment of the present invention.
  • Perspective view of the contact switch according to the first embodiment Front view of the contact switch according to the first embodiment Sectional drawing of the contact switch which concerns on Embodiment 1.
  • Perspective view of the housing of the contact switch according to the first embodiment Top view of the housing of the contact switch according to the first embodiment.
  • Top view of the housing of the contact switch according to the first embodiment Cross-sectional view of the housing according to the first embodiment
  • Perspective view of the conductive metal fitting of the contact switch according to the first embodiment Perspective view of the conductive metal fitting of the contact switch according to the first embodiment.
  • Perspective view of a thermal relay coupled to the contact switch according to the first embodiment Perspective view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are combined.
  • FIG. 1 Front view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are combined.
  • Cross-sectional view of the coupling portion between the contact switch and the thermal relay according to the first embodiment The figure which shows the modification of the conductive metal fitting of the contact switch which concerns on Embodiment 1.
  • Perspective view of the connection auxiliary pin according to the second embodiment of the present invention Plan view of the connection auxiliary pin according to the second embodiment
  • Perspective view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using a connection auxiliary pin according to the second embodiment.
  • Front view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using a connection auxiliary pin according to the second embodiment.
  • FIG. 1 is a perspective view of a contact switch according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view of the contact switch according to the first embodiment.
  • FIG. 3 is a front view of the contact switch according to the first embodiment.
  • FIG. 4 is a cross-sectional view of the contact switch according to the first embodiment.
  • FIG. 4 shows a cross section along the IV-IV line in FIG.
  • the housing 100 of the contact switch 1 includes a case 2 and a rear case 3.
  • the case 2 and the rear case 3 are made of an insulating material.
  • the contact switch 1 includes an electric wire insertion portion 4 into which an electric wire connected to a power source for supplying electric power to a load device is inserted, an electric wire insertion portion 5 into which an electric wire connected to the load equipment is inserted, and a contact switch 1. It is provided with an electric wire insertion portion 6 into which an electric wire for the operation of the above is inserted.
  • the electric wire insertion portion 4 which is the first electric wire insertion portion and the electric wire insertion portion 5 which is the second electric wire insertion portion have the same structure with respect to the surface ⁇ passing through the center of the contact switch 1 shown in FIG. They are arranged symmetrically.
  • the first direction which is the arrangement direction of the electric wire insertion portion 4 which is the first electric wire insertion portion and the electric wire insertion portion 5 which is the second electric wire insertion portion
  • the second direction which is the arrangement direction of the case 2 and the rear case 3 and is orthogonal to the first direction
  • the third direction orthogonal to both the first direction and the second direction is defined as the left-right direction.
  • the case 2 side is in front of the contact switch 1, and the rear case 3 side is behind the contact switch 1. Further, the side where the electric wire insertion portion 4 is provided is above the contact switch 1, and the side where the electric wire insertion portion 5 is provided is below the contact switch 1.
  • the left-hand side in the direction from the rear to the front of the contact switch 1 is the left side of the contact switch 1
  • the right-hand side in the direction from the rear to the front of the contact switch 1 is the right side of the contact switch 1.
  • the structure of the contact switch 1 will be described in a coordinate system based on an X-axis extending in the front-rear direction, a Y-axis extending in the left-right direction, and a Z-axis extending in the up-down direction.
  • the vertical direction of the contact switch 1 may not match the vertical direction.
  • the electric wire insertion portions 4, 5 and 6 have an insertion port member 7 having an opening, a spring type terminal 8, and a housing 9 forming a part of the housing 100.
  • the spring-type terminal 8 is composed of a conductive metal fitting 10 fixed to the case 2 and a spring 11 that engages with the frame portion 10a of the conductive metal fitting 10.
  • the connection terminal attached to the end of the electric wire is sandwiched between the frame portion 10a and the spring 11, and the connection terminal is pressed against the conductive metal fitting 10 by the elastic force of the spring 11 to be conductive.
  • the metal fitting 10 and the electric wire are electrically connected.
  • the spring-type terminal 8 can be electrically connected by directly sandwiching the end of the electric wire whose core wire is exposed by stripping the insulating coating.
  • the insertion port member 7 is fixed to the housing 9 and the case 2 with the opening 7a facing the front of the contact switch 1.
  • the connection terminal is guided between the frame portion 10a and the spring 11.
  • the insertion port member 7 is provided with a tool insertion port 7c for removing the electric wire and a voltage detection hole 7d for inserting a tester for voltage detection.
  • the contact switch 1 has an opening / closing portion 60 that switches between electrically connecting or insulating the conductive metal fitting 10 of the electric wire insertion portion 4 and the conductive metal fitting 10 of the electric wire insertion portion 5.
  • the opening / closing portion 60 includes an electromagnet portion 61 composed of a fixed iron core 52, an operating coil 66, and a movable iron core 54, and a movable portion 62 having a crossbar 57 and a movable contactor 41.
  • the operation coil 66 is wound around the central leg of the fixed iron core 52.
  • the movable iron core 54 is arranged so as to face each other with a gap from the fixed iron core 52.
  • the crossbar 57 is made of an insulating material and is connected to the movable iron core 54 via a connecting plate 59.
  • the movable contact 41 is arranged in a holding hole provided in the head of the crossbar 57, and faces each of the conductive metal fitting 10 of the electric wire insertion portion 4 and the conductive metal fitting 10 of the electric wire insertion portion 5.
  • the contact switch 1 includes five electric wire insertion portions 4 and five electric wire insertion portions 5.
  • the three central wire insertion portions 4 in the Y direction form main contacts for opening and closing a circuit through which a large current flows, and the two wire insertion portions 4 at the ends in the Y direction are auxiliary contacts for opening and closing a circuit through which a small current flows. Make up. Further, the three central wire insertion portions 5 in the Y direction form main contacts for opening and closing a circuit through which a large current flows, and the two wire insertion portions 5 at the ends in the Y direction open and close a circuit through which a small current flows. Makes an auxiliary contact.
  • FIG. 5 is a perspective view of the housing of the contact switch according to the first embodiment.
  • FIG. 6 is a plan view of the housing of the contact switch according to the first embodiment.
  • FIG. 7 is a cross-sectional view of the housing according to the first embodiment.
  • FIG. 7 shows a cross section along lines VII-VII in FIG.
  • the housing 9 has a conductor insertion port 9a that guides a rod-shaped connecting conductor of an expansion device to a position where it comes into contact with the conductive metal fitting 10.
  • the conductor insertion port 9a is provided at a portion that faces upward or downward when the housing 9 is assembled to the case 2. Therefore, the rod-shaped connecting conductor of the expansion device can be inserted into the contact switch 1 from the vertical direction.
  • the conductor insertion port 9a is closed by a thin-walled portion 9b in order to prevent dust from entering the inside of the contact switch 1 from the outside.
  • the thickness of the thin portion 9b is a thickness that can be pierced by a rod-shaped rigid body. As an example, by setting the thickness of the thin-walled portion 9b to 0.3 mm or less, it is possible to break through the thin-walled portion 9b with a rod-shaped rigid body. By providing the housing 9 with an opening having the same size as the connecting conductor of the expansion device, it is possible to penetrate the rod-shaped rigid body and reduce the concern about the intrusion of dust.
  • the direction in which the rod-shaped connecting conductor of the expansion device is inserted into the conductor insertion port 9a does not have to be completely the same as the vertical direction. That is, even when the direction in which the rod-shaped connecting conductor of the expansion device is inserted into the conductor insertion port 9a has an inclination within the design limit with respect to the vertical direction, the rod-shaped connecting conductor of the expansion device is inserted into the conductor insertion port 9a.
  • the insertion direction can be regarded as the vertical direction.
  • FIG. 8 is a perspective view of the conductive metal fitting of the contact switch according to the first embodiment.
  • FIG. 9 is a perspective view of the conductive metal fitting of the contact switch according to the first embodiment.
  • the shape of the conductive metal fitting 10 will be described assuming that the conductive metal fitting 10 is used for the spring type terminal 8 of the electric wire insertion portion 5 on the load side. Since the electric wire insertion portion 4 and the electric wire insertion portion 5 have the same structure and are arranged symmetrically with respect to the surface ⁇ passing through the center of the contact switch 1, the conductive metal fitting 10 is a spring type of the electric wire insertion portion 4. When used for the terminal 8, the left and right and top and bottom are the opposite of the following description.
  • the conductive metal fitting 10 is folded downward from the first portion 31 provided at one end, the second portion 32 extending rearward from the upper end portion of the first portion 31, and the left end portion of the second portion 32.
  • the third portion 33 and the fifth portion 35 face the upper surface of the housing 100.
  • the first portion 31 is provided with a frame portion 10a that comes into contact with a connection terminal attached to an end portion of the electric wire.
  • the third portion 33 is provided with a conductor contact portion 10b that comes into contact with the connecting conductor of the expansion device.
  • the conductor contact portion 10b is provided at the right end portion of the third portion 33.
  • the conductor contact portion 10b has a curved surface portion 22 whose direction continuously changes from the downward direction to the front direction, a flat surface portion 21 located in front of the curved surface portion 22 on the XY plane, and a flat surface portion 21 on the XY plane. It has a conductor holding portion 23 that projects forward.
  • FIG. 10 is a perspective view of a thermal relay coupled to the contact switch according to the first embodiment.
  • the thermal relay 12 is arranged on the load side of the contact switch 1 in the wiring path to form an electromagnetic switch.
  • the front / rear, left / right, and top / bottom of the thermal relay 12 are defined so as to coincide with the front / rear, left / right, and top / bottom when the thermal relay 12 is connected to the contact switch 1.
  • the housing 110 of the thermal relay 12 is formed by a lower case 13 and an upper cover 14. Since the thermal relay 12 is an expansion device for a contact switch having a screw type terminal, the rod-shaped connecting conductor 15 projects upward from the cover 14.
  • FIG. 11 is an exploded perspective view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are combined.
  • FIG. 12 is a front view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are combined.
  • FIG. 13 is a cross-sectional view of a coupling portion between the contact switch and the thermal relay according to the first embodiment.
  • FIG. 13 shows a cross section along the line XIII-XIII in FIG.
  • the connecting conductor 15 inserted into the conductor insertion port 9a comes into contact with the conductor contact portion 10b of the conductive metal fitting 10 arranged inside the housing 9. At this time, the connecting conductor 15 is guided forward by the curved surface portion 22 of the conductor contacting portion 10b, and the flat surface portion 21 and the side surface 15a of the connecting conductor 15 come into contact with each other.
  • the connecting conductor 15 of the thermal relay 12 When the connecting conductor 15 of the thermal relay 12 is inserted into the contact switch 1 from below, the side surface 15a of the connecting conductor 15 in contact with the curved surface portion 22 and bent forward comes into contact with the flat surface portion 21. .. That is, the side surface 15a of the connecting conductor 15 comes into contact with the flat surface portion 21 arranged at the guide destination of the connecting conductor 15 by the curved surface portion 22.
  • the position of the curved surface portion 22 on the XY plane By setting the position of the curved surface portion 22 on the XY plane to a position that interferes with the connecting conductor 15, a force that presses the connecting conductor 15 against the flat surface portion 21 is generated and the conduction area is expanded, so that resistance in electrical connection is increased. Can be reduced. Further, since the conductor holding portion 23 adjacent to the right side of the connecting conductor 15 projects forward from the flat surface portion 21, the connecting conductor 15 is prevented from falling off to the right.
  • the conductor contact portion 10b is provided at the third portion 33 of the conductive metal fitting 10, but the conductor contact portion 10b may be provided at the fifth portion 35 instead of the third portion 33. .. That is, the conductor contact portion 10b may be provided at a portion facing the upper surface or the lower surface of the housing 100 of the contact switch 1.
  • FIG. 14 is a diagram showing a modified example of the conductive metal fitting of the contact switch according to the first embodiment.
  • a front guide portion 10 g and a rear guide portion 10 h are provided at the right end portion of the third portion 33.
  • the lower surface of the forward guide portion 10g is a curved surface whose direction continuously changes from the lower direction to the rear direction.
  • the lower surface of the rear guide portion 10h is a curved surface whose direction continuously changes from the lower direction to the front direction. That is, in each of the pair of guide portions, the front guide portion 10g and the rear guide portion 10h, the surfaces facing the lower surface of the housing 100 continuously change in the direction of the pair of guide portions toward the other party. It is a curved surface.
  • the connecting conductor 15 of the thermal relay 12 that is in contact with the front guide portion 10 g or the rear guide portion 10 h is guided to the gap between the front guide portion 10 g and the rear guide portion 10 h, and is fitted and fixed in the gap.
  • sandwiching the connecting conductor 15 between the front guide portion 10g and the rear guide portion 10h the reliability of the electrical connection between the conductive metal fitting 10 and the electric wire is improved. Further, since the connecting conductor 15 is sandwiched between the front guide portion 10 g and the rear guide portion 10 h, the electric wire is unlikely to fall off in the right direction.
  • a pair of opposing guide portions are provided and a connecting conductor can be sandwiched between the pair of guide portions and fixed, and the pair of guide portions may be arranged in a direction other than the front-rear direction in the XY plane.
  • the electric wire insertion portions 4, 5 and 6 are spring type terminals. Although it is a spring type including 8, it is possible to directly connect an expansion device for a screw type terminal. Further, since the conductor contact portion 10b is provided in the third portion 33 of the conductive metal fitting 10, which is a portion facing the upper surface or the lower surface of the housing 100 of the contact switch 1, the wire insertion portions 4 and 5 Expansion devices for screw terminals can be connected from the vertical direction, which is different from the opening direction of, 6. If the rod-shaped connecting conductor of the expansion device can be inserted into the housing 100 from the vertical direction, the housing 9 may be installed on a portion other than the upper surface or the lower surface of the housing 100.
  • FIG. 15 is a perspective view of the connection auxiliary pin according to the second embodiment of the present invention.
  • FIG. 16 is a plan view of the connection auxiliary pin according to the second embodiment.
  • the connection auxiliary pin 16 is composed of a rod-shaped pin portion 17 that presses the connection conductor 15 against the conductive metal fitting 10, and a pin housing 18 that holds the pin portion 17 and assists the connection with the contact switch 1.
  • the pin housing 18 determines the insertion position of the pin portion 17 with respect to the electric wire insertion portion 5.
  • FIG. 17 is a perspective view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are coupled by using the connection auxiliary pin according to the second embodiment.
  • the pin portion 17 has an inclined surface 171 having an inclination with respect to the insertion direction into the electric wire insertion portion 5.
  • FIG. 19 is a cross-sectional view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are coupled by using the connection auxiliary pin according to the second embodiment.
  • FIG. 19 shows a cross section along the XIX-XIX line in FIG.
  • FIG. 20 is a cross-sectional view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using the connection auxiliary pin according to the second embodiment.
  • FIG. 20 shows a cross section along the line XX-XX in FIG.
  • the connection auxiliary pin 16 is inserted through the opening 7a of the electric wire insertion portion 5 of the phase to which the connection conductor 15 is connected.
  • the position of the insertion point is determined by the pin housing 18, and the inclined surface 171 of the pin portion 17 comes into contact with the flat surface portion 21 of the conductive metal fitting 10 of the connecting conductor 15 and the opposite side in contact with the conductor holding portion 23.
  • the pin portion 17 and the connecting conductor 15 interfere with each other due to the positional relationship, and the connecting conductor 15 is pressed against the plane portion 21 and the conductor holding portion 23.
  • the pin portion 17 is in contact with the connecting conductor 15 and is electrically connected to the frame portion 10a of the conductive metal fitting 10, it also has a function of securing a new energizing path.
  • connection auxiliary pin 16 Since the connection auxiliary pin 16 is attached to the electric wire insertion portion 5, the pin portion 17 is held by the spring type terminal 8 and the fixing force is always secured.
  • connection auxiliary pin 16 in order for the connection auxiliary pin 16 to secure the contact pressure between the connection conductor 15 and the conductive metal fitting 10, it is necessary to secure the pressing amount of the connection conductor 15 against the conductor contact portion 10b. Therefore, it is necessary to press-fit the connection auxiliary pin 16 into the electric wire insertion portion 5, but it is difficult to always numerically control the completion of press-fitting, and there is a possibility that the press-fitting will be insufficient when connected.
  • FIG. 21 is a cross-sectional view of the connection auxiliary pin according to the second embodiment when not in use.
  • FIG. 21 shows a cross section along the XXI-XXI line in FIG.
  • FIG. 22 is a cross-sectional view of the connection auxiliary pin according to the second embodiment after being press-fitted into the electromagnetic switch.
  • connection auxiliary pin 16 When the connection auxiliary pin 16 is press-fitted into the electric wire insertion portion 5, a reaction force of press-fitting is generated in the pin portion 17.
  • the housing coupling portion 17a of the pin portion 17 gets over the convex portion 18c and engages with the second engaging portion 18b due to the reaction force. That is, when the reaction force received by the pin portion 17 when being inserted into the electric wire insertion portion 5 exceeds a certain value, the pin portion 17 gets over the convex portion 18c and engages with the second engaging portion 18b.
  • vibration and engagement noise are generated.
  • the inserter of the connection auxiliary pin 16 determines that the press-fitting is completed based on the vibration and engagement noise. Can be recognized.
  • the housing coupling portion 17a moves over the convex portion 18c to the second engaging portion 18b, the first engaging portion 18a is restored to its original shape, and the housing coupling portion 17a is fixed to the second engaging portion 18b.
  • connection auxiliary pin 16 has an inclined surface 171 that is inclined with respect to the insertion direction into the electric wire inserting portion 5, and when inserted into the electric wire inserting portion 5, the inclined surface 171 is connected. Since the conductor 15 is urged toward the conductive metal fitting 10, the contact pressure between the connecting conductor 15 and the conductive metal fitting 10 is increased, and the reliability of the electrical connection between the connecting conductor 15 and the conductive metal fitting 10 is enhanced. Can be done.
  • the configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

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  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

The present invention is provided with: a housing (100) having an electric wire insertion part (4) into which an electric wire connected to a power supply for supplying electric power to a load device is inserted and an electric wire insertion part (5) to which an electric wire connected to the load device is inserted, with the electric wire insertion part (4) and the electric wire insertion part (5) being open in a front surface direction of the housing; conductive metal fittings (10) respectively provided to the electric wire insertion part (4) and the electric wire insertion part (5); and a switch part (60) for switching between electrical connection and electric insulation between the conductive metal fitting (10) of the electric wire insertion part (4) and the conductive metal fitting (10) of the electric wire insertion part (5), wherein the housing (100) has a conductor insertion slot to which a rod-like connection conductor can be inserted until coming into contact with the conductive metal fitting (10) of the electric wire insertion part (4) or the conductive metal fitting (10) of the electric wire insertion part (5), from a first direction in which the electric wire insertion part (4) and the electric wire insertion part (5) are arrayed.

Description

接点開閉器及び接続補助ピンContact switch and connection auxiliary pin
　本発明は、電流路の開閉を行う接点開閉器、及びこの接点開閉器と拡張機器との電気的な接続を補助する接続補助ピンに関する。 The present invention relates to a contact switch that opens and closes an electric current path, and a connection auxiliary pin that assists an electrical connection between the contact switch and an expansion device.
　電流路の開閉を行う接点開閉器は、電線を介して電源に接続される端子と、電線を介して負荷に接続される端子とを備えている。接点開閉器のこれらの端子に接続される電線は、端部の絶縁被覆が剥がされて、絶縁被覆が剥がされた部分にこれらの端子と接続されるための接続端子が取り付けられる。接点開閉器の端子には、ねじ式端子とスプリング式端子との２種類がある。 The contact switch that opens and closes the current path has a terminal connected to the power supply via the electric wire and a terminal connected to the load via the electric wire. The electric wire connected to these terminals of the contact switch is stripped of the insulating coating at the end, and a connecting terminal for connecting to these terminals is attached to the portion where the insulating coating is stripped. There are two types of contact switch terminals: screw type terminals and spring type terminals.
　ねじ式端子は、座金が付属したねじと導電性金具とを有し、座金が付属したねじを導電性金具に開けられたねじ穴に締結することで、座金と導電性金具とで接続端子を圧着する。これにより、導電性金具と接続端子のとの電気的導通が図られる。導電性金具へのねじの締結は、ドライバーといった工具を用いて行われる。接点開閉器の使用者が正面方向からねじを締結できるように、ねじは、ねじ頭を正面に向けて配置される。電源に接続される電線の接続端子が、接点開閉器のねじ式端子に接続される場合、接続端子は、電源側の端子と負荷側の端子との配列方向に沿って、座金と導電性金具との間に挿入される。 The screw type terminal has a screw with a washer and a conductive metal fitting, and by fastening the screw with a washer to a screw hole made in the conductive metal fitting, the connection terminal can be connected between the washer and the conductive metal fitting. Crimping. As a result, electrical continuity between the conductive metal fitting and the connection terminal is achieved. Screws are fastened to the conductive metal fittings using a tool such as a screwdriver. The screws are arranged with the screw heads facing the front so that the user of the contact switch can fasten the screws from the front. When the connection terminal of the electric wire connected to the power supply is connected to the screw type terminal of the contact switch, the connection terminal is a washer and a conductive metal fitting along the arrangement direction of the terminal on the power supply side and the terminal on the load side. It is inserted between and.
　一方、スプリング式端子は、枠部が形成された導電性金具と、枠部に嵌め込まれた板ばね状のスプリングとを有し、枠部に差し込まれた接続端子をスプリングの圧力にて保持する。これにより、導電性金具と接続端子との電気的導通が図られる。スプリング式端子を有する接点開閉器は、電線挿入部の開口が正面に向けられており、接点開閉器の正面から接続端子が挿入される。 On the other hand, the spring type terminal has a conductive metal fitting having a frame portion formed thereof and a leaf spring-shaped spring fitted in the frame portion, and holds the connection terminal inserted in the frame portion by the pressure of the spring. .. As a result, electrical conduction between the conductive metal fitting and the connection terminal is achieved. In the contact switch having a spring type terminal, the opening of the electric wire insertion portion is directed to the front, and the connection terminal is inserted from the front of the contact switch.
　スプリング式端子を有する接点開閉器は、電線挿入部に電線の接続端子を差し込むことで配線が完了するため、配線作業の工数は、ねじ式端子を有する接点開閉器よりも少なくて済む。このため、近年ではスプリング式端子を有する接点開閉器が用いられることが多くなっている。 A contact switch with a spring-type terminal completes wiring by inserting the connection terminal of the wire into the wire insertion part, so the man-hours for wiring work are less than those of a contact switch with a screw-type terminal. For this reason, in recent years, contact switches having spring-type terminals are often used.
　熱動継電器及び他の機器と結合するための接続導体ユニットといった拡張機器を接点開閉器に結合する際には、電源側の端子又は負荷側の端子が利用される。接点開閉器に結合する拡張機器は、結合用の接続導体を備えている。ねじ式端子を有する接点開閉器に拡張機器を結合する場合には、電源側の端子と負荷側の端子との配列方向に沿って座金と導電性金具との間に拡張機器の接続導体が挿入され、導電性金具と座金とで拡張機器の接続導体が圧着される。一方、スプリング式端子を有する接点開閉器に拡張機器を結合する場合には、接点開閉器の正面から拡張機器の接続導体がスプリング式端子の電線挿入部に挿入される。 When connecting an expansion device such as a thermal relay and a connecting conductor unit for connecting to other devices to a contact switch, a terminal on the power supply side or a terminal on the load side is used. The expansion device that couples to the contact switch is equipped with a connecting conductor for coupling. When connecting an expansion device to a contact switch with a screw type terminal, the connecting conductor of the expansion device is inserted between the washer and the conductive metal fitting along the arrangement direction of the terminal on the power supply side and the terminal on the load side. Then, the connecting conductor of the expansion device is crimped with the conductive metal fitting and the washer. On the other hand, when the expansion device is connected to the contact switch having the spring type terminal, the connecting conductor of the expansion device is inserted into the electric wire insertion portion of the spring type terminal from the front of the contact switch.
　上記のように、ねじ式端子を有する接点開閉器とスプリング式端子を有する接点開閉器とは、拡張機器の接続導体を挿入する方向が異なっている。また、ねじ式端子を有する接点開閉器用の拡張機器は、電源側の端子と負荷側の端子との配列方向に沿って接点開閉器と結合される。一方、スプリング式端子を有する接点開閉器用の拡張機器は、接点開閉器の正面に結合される。したがって、ねじ式端子を有する接点開閉器からスプリング式端子を有する接点開閉器に置き換えた場合には、ねじ式端子を有する接点開閉器用の拡張機器を結合することができなくなってしまう。 As described above, the contact switch having a screw type terminal and the contact switch having a spring type terminal are different in the direction in which the connecting conductor of the expansion device is inserted. Further, the expansion device for the contact switch having the screw type terminal is coupled to the contact switch along the arrangement direction of the terminal on the power supply side and the terminal on the load side. On the other hand, an expansion device for a contact switch having a spring-loaded terminal is coupled to the front of the contact switch. Therefore, when the contact switch having the screw type terminal is replaced with the contact switch having the spring type terminal, it becomes impossible to combine the expansion device for the contact switch having the screw type terminal.
　特許文献１には、ねじ式端子用の接続導体をスプリング式端子用の接続導体に変換する連結ユニットが開示されている。特許文献１に開示される連結ユニットを用いれば、ねじ式端子用の拡張機器をスプリング式端子を有する接点開閉器に結合することができる。 Patent Document 1 discloses a connecting unit that converts a connecting conductor for a screw type terminal into a connecting conductor for a spring type terminal. By using the connecting unit disclosed in Patent Document 1, an expansion device for a screw type terminal can be connected to a contact switch having a spring type terminal.
特開２０１８－１９０５７４号公報JP-A-2018-190574
　しかしながら、特許文献１に開示される連結ユニットは、拡張機器と連結ユニットとを連結する工数が必要であるため、配線作業の工数削減の妨げとなってしまう。 However, the connecting unit disclosed in Patent Document 1 requires man-hours for connecting the expansion device and the connecting unit, which hinders the reduction of man-hours for wiring work.
　本発明は、上記に鑑みてなされたものであって、スプリング式端子を備えながらもねじ式端子用の拡張機器を工数の増加を抑制して接続可能な接点開閉器を得ることを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to obtain a contact switch capable of connecting an expansion device for a screw type terminal while suppressing an increase in man-hours while having a spring type terminal. ..
　上述した課題を解決し、目的を達成するために、本発明は、負荷機器に電力を供給する電源に接続される電線が挿入される第１の電線挿入部と、負荷機器に接続される電線が挿入される第２の電線挿入部とを備え、第１の電線挿入部及び第２の電線挿入部の各々が正面方向に開口した筐体と、第１の電線挿入部及び第２の電線挿入部にそれぞれ設置された導電性金具と、第１の電線挿入部の導電性金具と第２の電線挿入部の導電性金具とを電気的に接続するか、絶縁するかを切り換える開閉部とを有する。筐体は、第１の電線挿入部の導電性金具又は第２の電線挿入部の導電性金具に接するまで棒状の接続導体を第１の電線挿入部と第２の電線挿入部との配列方向である第１の方向から挿入可能な導体挿入口を有する。 In order to solve the above-mentioned problems and achieve the object, the present invention has a first electric wire insertion part into which an electric wire connected to a power source for supplying electric power to a load device is inserted, and an electric wire connected to the load device. A housing in which each of the first electric wire insertion portion and the second electric wire insertion portion is opened in the front direction, and the first electric wire insertion portion and the second electric wire are provided. An opening / closing part that switches between electrically connecting or insulating the conductive metal fittings installed in the insertion parts, the conductive metal fittings of the first electric wire insertion part, and the conductive metal fittings of the second electric wire insertion part. Has. In the housing, the rod-shaped connecting conductor is arranged in the arrangement direction of the first electric wire insertion portion and the second electric wire insertion portion until it comes into contact with the conductive metal fitting of the first electric wire insertion portion or the conductive metal fitting of the second electric wire insertion portion. It has a conductor insertion slot that can be inserted from the first direction.
　本発明に係る接点開閉器は、スプリング式端子を備えながらもねじ式端子用の拡張機器を工数の増加を抑制して接続できるという効果を奏する。 The contact switch according to the present invention has an effect that it is possible to connect an expansion device for a screw type terminal while suppressing an increase in man-hours while having a spring type terminal.
本発明の実施の形態１に係る接点開閉器の斜視図Perspective view of the contact switch according to the first embodiment of the present invention. 実施の形態１に係る接点開閉器の斜視図Perspective view of the contact switch according to the first embodiment 実施の形態１に係る接点開閉器の正面図Front view of the contact switch according to the first embodiment 実施の形態１に係る接点開閉器の断面図Sectional drawing of the contact switch which concerns on Embodiment 1. 実施の形態１に係る接点開閉器のハウジングの斜視図Perspective view of the housing of the contact switch according to the first embodiment. 実施の形態１に係る接点開閉器のハウジングの平面図Top view of the housing of the contact switch according to the first embodiment 実施の形態１に係るハウジングの断面図Cross-sectional view of the housing according to the first embodiment 実施の形態１に係る接点開閉器の導電性金具の斜視図Perspective view of the conductive metal fitting of the contact switch according to the first embodiment. 実施の形態１に係る接点開閉器の導電性金具の斜視図Perspective view of the conductive metal fitting of the contact switch according to the first embodiment. 実施の形態１に係る接点開閉器に結合される熱動継電器の斜視図Perspective view of a thermal relay coupled to the contact switch according to the first embodiment. 実施の形態１に係る接点開閉器と熱動継電器とを組み合わせた電磁開閉器の分解斜視図An exploded perspective view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are combined. 実施の形態１に係る接点開閉器と熱動継電器とを組み合わせた電磁開閉器の正面図Front view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are combined. 実施の形態１に係る接点開閉器と熱動継電器との結合部分の断面図Cross-sectional view of the coupling portion between the contact switch and the thermal relay according to the first embodiment. 実施の形態１に係る接点開閉器の導電性金具の変形例を示す図The figure which shows the modification of the conductive metal fitting of the contact switch which concerns on Embodiment 1. 本発明の実施の形態２に係る接続補助ピンの斜視図Perspective view of the connection auxiliary pin according to the second embodiment of the present invention. 実施の形態２に係る接続補助ピンの平面図Plan view of the connection auxiliary pin according to the second embodiment 実施の形態２に係る接続補助ピンを用いて実施の形態１に係る接点開閉器と熱動継電器とを結合した電磁開閉器の斜視図Perspective view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using a connection auxiliary pin according to the second embodiment. 実施の形態２に係る接続補助ピンを用いて実施の形態１に係る接点開閉器と熱動継電器とを結合した電磁開閉器の正面図Front view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using a connection auxiliary pin according to the second embodiment. 実施の形態２に係る接続補助ピンを用いて実施の形態１に係る接点開閉器と熱動継電器とを結合した電磁開閉器の断面図Cross-sectional view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using a connection auxiliary pin according to the second embodiment. 実施の形態２に係る接続補助ピンを用いて実施の形態１に係る接点開閉器と熱動継電器とを結合した電磁開閉器の断面図Cross-sectional view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using a connection auxiliary pin according to the second embodiment. 実施の形態２に係る接続補助ピンの未使用時の断面図Cross-sectional view of the connection auxiliary pin according to the second embodiment when not in use. 実施の形態２に係る接続補助ピンの電磁開閉器への圧入後の断面図Cross-sectional view of the connection auxiliary pin according to the second embodiment after press fitting into the electromagnetic switch.
　以下に、本発明の実施の形態に係る接点開閉器及び接続補助ピンを図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 Hereinafter, the contact switch and the connection auxiliary pin according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.
実施の形態１．
　図１は、本発明の実施の形態１に係る接点開閉器の斜視図である。図２は、実施の形態１に係る接点開閉器の斜視図である。図３は、実施の形態１に係る接点開閉器の正面図である。図４は、実施の形態１に係る接点開閉器の断面図である。図４は、図３中のIV-IV線に沿った断面を示している。接点開閉器１の筐体１００は、ケース２及びリアケース３を備えている。ケース２及びリアケース３は、絶縁材で形成されている。接点開閉器１は、負荷機器に電力を供給する電源に接続される電線が挿入される電線挿入部４と、負荷機器に接続される電線が挿入される電線挿入部５と、接点開閉器１の操作用の電線が挿入される電線挿入部６とを備える。なお、第１の電線挿入部である電線挿入部４と第２の電線挿入部である電線挿入部５は同じ構造であり、図３に示す接点開閉器１の中心を通る面αに対して対称に配置されている。 Embodiment 1.
FIG. 1 is a perspective view of a contact switch according to a first embodiment of the present invention. FIG. 2 is a perspective view of the contact switch according to the first embodiment. FIG. 3 is a front view of the contact switch according to the first embodiment. FIG. 4 is a cross-sectional view of the contact switch according to the first embodiment. FIG. 4 shows a cross section along the IV-IV line in FIG. The housing 100 of the contact switch 1 includes a case 2 and a rear case 3. The case 2 and the rear case 3 are made of an insulating material. The contact switch 1 includes an electric wire insertion portion 4 into which an electric wire connected to a power source for supplying electric power to a load device is inserted, an electric wire insertion portion 5 into which an electric wire connected to the load equipment is inserted, and a contact switch 1. It is provided with an electric wire insertion portion 6 into which an electric wire for the operation of the above is inserted. The electric wire insertion portion 4 which is the first electric wire insertion portion and the electric wire insertion portion 5 which is the second electric wire insertion portion have the same structure with respect to the surface α passing through the center of the contact switch 1 shown in FIG. They are arranged symmetrically.
　接点開閉器１において、第１の電線挿入部である電線挿入部４と第２の電線挿入部である電線挿入部５との配列方向である第１の方向を上下方向とする。また、ケース２及びリアケース３の配列方向であり、第１の方向と直交する第２の方向を前後方向とする。さらに、第１の方向及び第２の方向の両方に直交する第３の方向を左右方向とする。なお、ケース２側が接点開閉器１の前方であり、リアケース３側が接点開閉器１の後方である。また、電線挿入部４が設けられている側が接点開閉器１の上方であり、電線挿入部５が設けられている側が接点開閉器１の下方である。また、接点開閉器１の後方から前方へ向かう方向での左手側が接点開閉器１の左方であり、接点開閉器１の後方から前方へ向かう方向での右手側が接点開閉器１の右方である。以下、前後方向に伸びるＸ軸、左右方向に伸びるＹ軸及び上下方向に伸びるＺ軸による座標系において接点開閉器１の構造を説明する。なお、接点開閉器１を設置したときの姿勢によっては、接点開閉器１の上下方向は鉛直方向と一致しない場合がありうる。 In the contact switch 1, the first direction, which is the arrangement direction of the electric wire insertion portion 4 which is the first electric wire insertion portion and the electric wire insertion portion 5 which is the second electric wire insertion portion, is the vertical direction. Further, the second direction, which is the arrangement direction of the case 2 and the rear case 3 and is orthogonal to the first direction, is the front-rear direction. Further, the third direction orthogonal to both the first direction and the second direction is defined as the left-right direction. The case 2 side is in front of the contact switch 1, and the rear case 3 side is behind the contact switch 1. Further, the side where the electric wire insertion portion 4 is provided is above the contact switch 1, and the side where the electric wire insertion portion 5 is provided is below the contact switch 1. Further, the left-hand side in the direction from the rear to the front of the contact switch 1 is the left side of the contact switch 1, and the right-hand side in the direction from the rear to the front of the contact switch 1 is the right side of the contact switch 1. is there. Hereinafter, the structure of the contact switch 1 will be described in a coordinate system based on an X-axis extending in the front-rear direction, a Y-axis extending in the left-right direction, and a Z-axis extending in the up-down direction. Depending on the posture when the contact switch 1 is installed, the vertical direction of the contact switch 1 may not match the vertical direction.
　図４に示すように、電線挿入部４，５，６は、開口部を持つ挿入口部材７と、スプリング式端子８と、筐体１００の一部をなすハウジング９とを有する。スプリング式端子８は、ケース２に固定された導電性金具１０と、導電性金具１０の枠部１０ａに係合するスプリング１１とで構成される。スプリング式端子８は、電線の端部に取り付けられた接続端子を枠部１０ａとスプリング１１との間に挟むことで、スプリング１１の弾性力によって接続端子を導電性金具１０に圧接させ、導電性金具１０と電線とを電気的に接続する。なお、スプリング式端子８は、絶縁被覆を剥いで芯線を露出させた電線の端部を直接挟み込んで導通することも可能である。 As shown in FIG. 4, the electric wire insertion portions 4, 5 and 6 have an insertion port member 7 having an opening, a spring type terminal 8, and a housing 9 forming a part of the housing 100. The spring-type terminal 8 is composed of a conductive metal fitting 10 fixed to the case 2 and a spring 11 that engages with the frame portion 10a of the conductive metal fitting 10. In the spring type terminal 8, the connection terminal attached to the end of the electric wire is sandwiched between the frame portion 10a and the spring 11, and the connection terminal is pressed against the conductive metal fitting 10 by the elastic force of the spring 11 to be conductive. The metal fitting 10 and the electric wire are electrically connected. The spring-type terminal 8 can be electrically connected by directly sandwiching the end of the electric wire whose core wire is exposed by stripping the insulating coating.
　図３及び図４に示すように、挿入口部材７は、開口部７ａを接点開閉器１の正面に向けてハウジング９及びケース２に固定される。電線を接点開閉器１に配線する際、電線の端部に取り付けられた接続端子を挿入口部材７の筒状部７ｂに挿入すると、枠部１０ａとスプリング１１との間に接続端子が案内される。また、挿入口部材７に、電線を取り外すための工具挿入口７ｃ及び検電用のテスターを挿入するための検電孔７ｄが設けられている。工具挿入口７ｃに工具を挿入することで枠部１０ａとスプリング１１との間に隙間が形成され、電線の取り外しが可能となる。また、検電孔７ｄにテスターを挿入することによってテスターの先端がスプリング１１に接触し、導通を確認することが可能となる。ハウジング９は枠部１０ａ及びスプリング１１を覆うように配置され、絶縁性を確保している。 As shown in FIGS. 3 and 4, the insertion port member 7 is fixed to the housing 9 and the case 2 with the opening 7a facing the front of the contact switch 1. When wiring the electric wire to the contact switch 1, when the connection terminal attached to the end of the electric wire is inserted into the tubular portion 7b of the insertion port member 7, the connection terminal is guided between the frame portion 10a and the spring 11. To. Further, the insertion port member 7 is provided with a tool insertion port 7c for removing the electric wire and a voltage detection hole 7d for inserting a tester for voltage detection. By inserting the tool into the tool insertion port 7c, a gap is formed between the frame portion 10a and the spring 11, and the electric wire can be removed. Further, by inserting the tester into the voltage detection hole 7d, the tip of the tester comes into contact with the spring 11, and it becomes possible to confirm the continuity. The housing 9 is arranged so as to cover the frame portion 10a and the spring 11 to ensure insulation.
　図４に示すように、接点開閉器１は、電線挿入部４の導電性金具１０と電線挿入部５の導電性金具１０とを電気的に接続するか絶縁するかを切り換える開閉部６０を有する。開閉部６０は、固定鉄心５２、操作コイル６６及び可動鉄心５４によって構成される電磁石部６１と、クロスバー５７及び可動接触子４１を有する可動部６２とを備える。操作コイル６６は、固定鉄心５２の中央脚に巻回されている。可動鉄心５４は、固定鉄心５２と間隔をもって相対向して配置されている。クロスバー５７は、絶縁材料で形成され連結板５９を介して可動鉄心５４と連結されている。可動接触子４１は、クロスバー５７の頭部に設けた保持穴に配設されて、電線挿入部４の導電性金具１０及び電線挿入部５の導電性金具１０のそれぞれと対向している。可動接触子４１が電線挿入部４の導電性金具１０及び電線挿入部５の導電性金具１０の双方に接触することで電流が通電され、回路が形成される。接点開閉器１は、電線挿入部４及び電線挿入部５を五つずつ備える。Ｙ方向における中央の三つの電線挿入部４は、大電流を流す回路を開閉する主接点をなし、Ｙ方向における端部の二つの電線挿入部４は、小電流を流す回路を開閉する補助接点をなす。また、Ｙ方向における中央の三つの電線挿入部５は、大電流を流す回路を開閉する主接点をなし、Ｙ方向における端部の二つの電線挿入部５は、小電流を流す回路を開閉する補助接点をなす。 As shown in FIG. 4, the contact switch 1 has an opening / closing portion 60 that switches between electrically connecting or insulating the conductive metal fitting 10 of the electric wire insertion portion 4 and the conductive metal fitting 10 of the electric wire insertion portion 5. .. The opening / closing portion 60 includes an electromagnet portion 61 composed of a fixed iron core 52, an operating coil 66, and a movable iron core 54, and a movable portion 62 having a crossbar 57 and a movable contactor 41. The operation coil 66 is wound around the central leg of the fixed iron core 52. The movable iron core 54 is arranged so as to face each other with a gap from the fixed iron core 52. The crossbar 57 is made of an insulating material and is connected to the movable iron core 54 via a connecting plate 59. The movable contact 41 is arranged in a holding hole provided in the head of the crossbar 57, and faces each of the conductive metal fitting 10 of the electric wire insertion portion 4 and the conductive metal fitting 10 of the electric wire insertion portion 5. When the movable contact 41 comes into contact with both the conductive metal fitting 10 of the electric wire insertion portion 4 and the conductive metal fitting 10 of the electric wire insertion portion 5, an electric current is energized and a circuit is formed. The contact switch 1 includes five electric wire insertion portions 4 and five electric wire insertion portions 5. The three central wire insertion portions 4 in the Y direction form main contacts for opening and closing a circuit through which a large current flows, and the two wire insertion portions 4 at the ends in the Y direction are auxiliary contacts for opening and closing a circuit through which a small current flows. Make up. Further, the three central wire insertion portions 5 in the Y direction form main contacts for opening and closing a circuit through which a large current flows, and the two wire insertion portions 5 at the ends in the Y direction open and close a circuit through which a small current flows. Makes an auxiliary contact.
　図５は、実施の形態１に係る接点開閉器のハウジングの斜視図である。図６は、実施の形態１に係る接点開閉器のハウジングの平面図である。図７は、実施の形態１に係るハウジングの断面図である。図７は、図６中のVII-VII線に沿った断面を示している。ハウジング９は、拡張機器の棒状の接続導体を導電性金具１０との接触する箇所に導く導体挿入口９ａを有する。導体挿入口９ａは、ハウジング９をケース２に組付けた際に上方又は下方を向く部分に設けられている。したがって、接点開閉器１には、上下方向から拡張機器の棒状の接続導体を挿入可能となっている。導体挿入口９ａは、外部から接点開閉器１の内部への塵埃の侵入を防ぐために、薄肉部９ｂによって塞がれている。薄肉部９ｂの厚さは、棒状剛体で突き破ることが可能な厚さである。一例をあげると、薄肉部９ｂの厚さを０．３ｍｍ以下とすることで、棒状剛体で薄肉部９ｂを突き破ることが可能となる。なお、拡張機器の接続導体と同じ大きさの開口をハウジング９に設けることで、棒状剛体を貫通可能とし、かつ塵埃の侵入の懸念を小さくすることができる。なお、導体挿入口９ａに拡張機器の棒状の接続導体を挿入する方向は、上下方向と完全に一致していなくてもよい。すなわち、導体挿入口９ａに拡張機器の棒状の接続導体を挿入する方向が、上下方向に対して設計上の限度内の傾きを有する場合も、導体挿入口９ａに拡張機器の棒状の接続導体を挿入する方向が上下方向と見なすことができる。 FIG. 5 is a perspective view of the housing of the contact switch according to the first embodiment. FIG. 6 is a plan view of the housing of the contact switch according to the first embodiment. FIG. 7 is a cross-sectional view of the housing according to the first embodiment. FIG. 7 shows a cross section along lines VII-VII in FIG. The housing 9 has a conductor insertion port 9a that guides a rod-shaped connecting conductor of an expansion device to a position where it comes into contact with the conductive metal fitting 10. The conductor insertion port 9a is provided at a portion that faces upward or downward when the housing 9 is assembled to the case 2. Therefore, the rod-shaped connecting conductor of the expansion device can be inserted into the contact switch 1 from the vertical direction. The conductor insertion port 9a is closed by a thin-walled portion 9b in order to prevent dust from entering the inside of the contact switch 1 from the outside. The thickness of the thin portion 9b is a thickness that can be pierced by a rod-shaped rigid body. As an example, by setting the thickness of the thin-walled portion 9b to 0.3 mm or less, it is possible to break through the thin-walled portion 9b with a rod-shaped rigid body. By providing the housing 9 with an opening having the same size as the connecting conductor of the expansion device, it is possible to penetrate the rod-shaped rigid body and reduce the concern about the intrusion of dust. The direction in which the rod-shaped connecting conductor of the expansion device is inserted into the conductor insertion port 9a does not have to be completely the same as the vertical direction. That is, even when the direction in which the rod-shaped connecting conductor of the expansion device is inserted into the conductor insertion port 9a has an inclination within the design limit with respect to the vertical direction, the rod-shaped connecting conductor of the expansion device is inserted into the conductor insertion port 9a. The insertion direction can be regarded as the vertical direction.
　図８は、実施の形態１に係る接点開閉器の導電性金具の斜視図である。図９は、実施の形態１に係る接点開閉器の導電性金具の斜視図である。以下において、導電性金具１０が負荷側である電線挿入部５のスプリング式端子８に用いられる場合を想定して導電性金具１０の形状を説明する。なお、電線挿入部４と電線挿入部５は同じ構造であり、接点開閉器１の中心を通る面αに対して対称に配置されているため、導電性金具１０が電線挿入部４のスプリング式端子８に用いられる場合には、左右及び上下は下記の説明とは逆となる。 FIG. 8 is a perspective view of the conductive metal fitting of the contact switch according to the first embodiment. FIG. 9 is a perspective view of the conductive metal fitting of the contact switch according to the first embodiment. In the following, the shape of the conductive metal fitting 10 will be described assuming that the conductive metal fitting 10 is used for the spring type terminal 8 of the electric wire insertion portion 5 on the load side. Since the electric wire insertion portion 4 and the electric wire insertion portion 5 have the same structure and are arranged symmetrically with respect to the surface α passing through the center of the contact switch 1, the conductive metal fitting 10 is a spring type of the electric wire insertion portion 4. When used for the terminal 8, the left and right and top and bottom are the opposite of the following description.
　導電性金具１０は、一端部に設けられた第１の部位３１と、第１の部位３１の上端部から後方へ伸びる第２の部位３２と、第２の部位３２の左端部から下方に折り返された第３の部位３３と、第３の部位３３の後端部から下方に伸びる第４の部位３４と、第４の部位３４の下端部から後方へ伸びる第５の部位３５と、第５の部位３５の後端部から上方へ伸びる第６の部位３６とを有する。導電性金具１０のうち、第３の部位３３及び第５の部位３５は、筐体１００の上面と対向する。第１の部位３１には、電線の端部に取り付けられた接続端子と接触する枠部１０ａが設けられている。第３の部位３３には、拡張機器の接続導体と接触する導体接触部１０ｂが設けられている。導体接触部１０ｂは、第３の部位３３の右端部に設けられている。第６の部位３６に可動接触子４１が接触したり離れたりすることによって、電源と負荷機器との間の通電及び遮断が切り替わる。 The conductive metal fitting 10 is folded downward from the first portion 31 provided at one end, the second portion 32 extending rearward from the upper end portion of the first portion 31, and the left end portion of the second portion 32. A third part 33, a fourth part 34 extending downward from the rear end of the third part 33, a fifth part 35 extending rearward from the lower end of the fourth part 34, and a fifth part. It has a sixth portion 36 extending upward from the rear end portion of the portion 35 of the. Of the conductive metal fittings 10, the third portion 33 and the fifth portion 35 face the upper surface of the housing 100. The first portion 31 is provided with a frame portion 10a that comes into contact with a connection terminal attached to an end portion of the electric wire. The third portion 33 is provided with a conductor contact portion 10b that comes into contact with the connecting conductor of the expansion device. The conductor contact portion 10b is provided at the right end portion of the third portion 33. When the movable contactor 41 comes into contact with or separates from the sixth portion 36, the energization and disconnection between the power supply and the load device are switched.
　導体接触部１０ｂは、下方向から前方向まで連続的に向きが変化する曲面部２２と、ＸＹ平面上において曲面部２２の前方に位置する平面部２１と、ＸＹ平面上において平面部２１よりも前方に張り出す導体押さえ部２３とを有する。 The conductor contact portion 10b has a curved surface portion 22 whose direction continuously changes from the downward direction to the front direction, a flat surface portion 21 located in front of the curved surface portion 22 on the XY plane, and a flat surface portion 21 on the XY plane. It has a conductor holding portion 23 that projects forward.
　図１０は、実施の形態１に係る接点開閉器に結合される熱動継電器の斜視図である。熱動継電器１２は、配線経路において接点開閉器１よりも負荷側に配置されて電磁開閉器を構成する。以下の説明において、熱動継電器１２を接点開閉器１に結合した際の前後、左右及び上下と一致するように、熱動継電器１２の前後、左右及び上下を定義する。熱動継電器１２の筐体１１０は、下部のケース１３と上部のカバー１４とによって形成されている。熱動継電器１２は、ねじ式端子を有する接点開閉器用の拡張機器であるため、棒状の接続導体１５は、カバー１４から突出して上方向に伸びている。 FIG. 10 is a perspective view of a thermal relay coupled to the contact switch according to the first embodiment. The thermal relay 12 is arranged on the load side of the contact switch 1 in the wiring path to form an electromagnetic switch. In the following description, the front / rear, left / right, and top / bottom of the thermal relay 12 are defined so as to coincide with the front / rear, left / right, and top / bottom when the thermal relay 12 is connected to the contact switch 1. The housing 110 of the thermal relay 12 is formed by a lower case 13 and an upper cover 14. Since the thermal relay 12 is an expansion device for a contact switch having a screw type terminal, the rod-shaped connecting conductor 15 projects upward from the cover 14.
　図１１は、実施の形態１に係る接点開閉器と熱動継電器とを組み合わせた電磁開閉器の分解斜視図である。図１２は、実施の形態１に係る接点開閉器と熱動継電器とを組み合わせた電磁開閉器の正面図である。図１３は、実施の形態１に係る接点開閉器と熱動継電器との結合部分の断面図である。図１３は、図１２中のXIII-XIII線に沿った断面を示している。接点開閉器１と熱動継電器１２との結合時には、接点開閉器１の下面側に配置されたハウジング９が有する導体挿入口９ａに熱動継電器１２の棒状の接続導体１５が挿入される。導体挿入口９ａに挿入された接続導体１５は、ハウジング９内部に配置された導電性金具１０の導体接触部１０ｂに接触する。この際、接続導体１５は、導体接触部１０ｂの曲面部２２によって前方に案内され、平面部２１と接続導体１５の側面１５ａとが接触する。 FIG. 11 is an exploded perspective view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are combined. FIG. 12 is a front view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are combined. FIG. 13 is a cross-sectional view of a coupling portion between the contact switch and the thermal relay according to the first embodiment. FIG. 13 shows a cross section along the line XIII-XIII in FIG. When the contact switch 1 and the thermal relay 12 are coupled, the rod-shaped connecting conductor 15 of the thermal relay 12 is inserted into the conductor insertion port 9a of the housing 9 arranged on the lower surface side of the contact switch 1. The connecting conductor 15 inserted into the conductor insertion port 9a comes into contact with the conductor contact portion 10b of the conductive metal fitting 10 arranged inside the housing 9. At this time, the connecting conductor 15 is guided forward by the curved surface portion 22 of the conductor contacting portion 10b, and the flat surface portion 21 and the side surface 15a of the connecting conductor 15 come into contact with each other.
　接点開閉器１に下方向から熱動継電器１２の接続導体１５が挿入された際に、曲面部２２に接触して前方に撓んだ状態の接続導体１５の側面１５ａが平面部２１に接触する。すなわち、曲面部２２による接続導体１５の案内先に配置されている平面部２１に、接続導体１５の側面１５ａが接触する。ＸＹ平面上での曲面部２２の位置を、接続導体１５と干渉する位置にすることにより、接続導体１５を平面部２１に押し付ける力が生じて導通面積が拡大するため、電気的接続における抵抗を減らすことができる。また、接続導体１５の右方に隣接する導体押さえ部２３が平面部２１よりも前方に張り出しているため、接続導体１５が右方向に脱落することは防止される。 When the connecting conductor 15 of the thermal relay 12 is inserted into the contact switch 1 from below, the side surface 15a of the connecting conductor 15 in contact with the curved surface portion 22 and bent forward comes into contact with the flat surface portion 21. .. That is, the side surface 15a of the connecting conductor 15 comes into contact with the flat surface portion 21 arranged at the guide destination of the connecting conductor 15 by the curved surface portion 22. By setting the position of the curved surface portion 22 on the XY plane to a position that interferes with the connecting conductor 15, a force that presses the connecting conductor 15 against the flat surface portion 21 is generated and the conduction area is expanded, so that resistance in electrical connection is increased. Can be reduced. Further, since the conductor holding portion 23 adjacent to the right side of the connecting conductor 15 projects forward from the flat surface portion 21, the connecting conductor 15 is prevented from falling off to the right.
　上記の例において、導電性金具１０の第３の部位３３に導体接触部１０ｂが設けられていたが、導体接触部１０ｂは、第３の部位３３ではなく第５の部位３５に設けても良い。すなわち、導体接触部１０ｂは、接点開閉器１の筐体１００の上面又は下面と対向する部位に設けられていればよい。 In the above example, the conductor contact portion 10b is provided at the third portion 33 of the conductive metal fitting 10, but the conductor contact portion 10b may be provided at the fifth portion 35 instead of the third portion 33. .. That is, the conductor contact portion 10b may be provided at a portion facing the upper surface or the lower surface of the housing 100 of the contact switch 1.
　図１４は、実施の形態１に係る接点開閉器の導電性金具の変形例を示す図である。第３の部位３３の右端部には、前方案内部１０ｇ及び後方案内部１０ｈが設けられている。前方案内部１０ｇの下面は、下方向から後方向まで向きが連続的に変化する曲面となっている。後方案内部１０ｈの下面は、下方向から前方向まで向きが連続的に変化する曲面となっている。すなわち、一対の案内部である前方案内部１０ｇ及び後方案内部１０ｈの各々は、筐体１００の下面と対向する面が、一対の案内部の対の相手へ向かう方向へ向きが連続的に変化する曲面となっている。前方案内部１０ｇ又は後方案内部１０ｈに当接した熱動継電器１２の接続導体１５は、前方案内部１０ｇと後方案内部１０ｈとの隙間に導かれ、隙間に嵌まって固定される。接続導体１５が前方案内部１０ｇと後方案内部１０ｈとに挟まれることにより、導電性金具１０と電線との電気的な接続の信頼性が向上する。また、接続導体１５が前方案内部１０ｇと後方案内部１０ｈとに挟まれるため、電線が右方向に脱落しにくい。 FIG. 14 is a diagram showing a modified example of the conductive metal fitting of the contact switch according to the first embodiment. A front guide portion 10 g and a rear guide portion 10 h are provided at the right end portion of the third portion 33. The lower surface of the forward guide portion 10g is a curved surface whose direction continuously changes from the lower direction to the rear direction. The lower surface of the rear guide portion 10h is a curved surface whose direction continuously changes from the lower direction to the front direction. That is, in each of the pair of guide portions, the front guide portion 10g and the rear guide portion 10h, the surfaces facing the lower surface of the housing 100 continuously change in the direction of the pair of guide portions toward the other party. It is a curved surface. The connecting conductor 15 of the thermal relay 12 that is in contact with the front guide portion 10 g or the rear guide portion 10 h is guided to the gap between the front guide portion 10 g and the rear guide portion 10 h, and is fitted and fixed in the gap. By sandwiching the connecting conductor 15 between the front guide portion 10g and the rear guide portion 10h, the reliability of the electrical connection between the conductive metal fitting 10 and the electric wire is improved. Further, since the connecting conductor 15 is sandwiched between the front guide portion 10 g and the rear guide portion 10 h, the electric wire is unlikely to fall off in the right direction.
　なお、相対する一対の案内部を備え、一対の案内部の間に接続導体を挟んで固定できればよく、一対の案内部は、ＸＹ平面内で前後方向以外の方向に並んでいてもよい。 It is sufficient that a pair of opposing guide portions are provided and a connecting conductor can be sandwiched between the pair of guide portions and fixed, and the pair of guide portions may be arranged in a direction other than the front-rear direction in the XY plane.
　実施の形態１に係る接点開閉器１は、筐体１００の上面又は下面の一部をなすハウジング９に導体挿入口９ａが設けられているため、電線挿入部４，５，６がスプリング式端子８を備えるスプリング式であるが、ねじ式端子用の拡張機器を直接結合することができる。また、導電性金具１０のうち、接点開閉器１の筐体１００の上面又は下面と対向する部位である第３の部位３３に導体接触部１０ｂが設けられているため、電線挿入部４，５，６の開口方向とは向きが異なる上下方向からねじ式端子用の拡張機器を結合することができる。なお、拡張機器の棒状の接続導体を上下方向から筐体１００に挿入可能であるならば、ハウジング９は、筐体１００の上面又は下面以外の部分に設置してもよい。 In the contact switch 1 according to the first embodiment, since the conductor insertion port 9a is provided in the housing 9 forming a part of the upper surface or the lower surface of the housing 100, the electric wire insertion portions 4, 5 and 6 are spring type terminals. Although it is a spring type including 8, it is possible to directly connect an expansion device for a screw type terminal. Further, since the conductor contact portion 10b is provided in the third portion 33 of the conductive metal fitting 10, which is a portion facing the upper surface or the lower surface of the housing 100 of the contact switch 1, the wire insertion portions 4 and 5 Expansion devices for screw terminals can be connected from the vertical direction, which is different from the opening direction of, 6. If the rod-shaped connecting conductor of the expansion device can be inserted into the housing 100 from the vertical direction, the housing 9 may be installed on a portion other than the upper surface or the lower surface of the housing 100.
実施の形態２．
　図１５は、本発明の実施の形態２に係る接続補助ピンの斜視図である。図１６は、実施の形態２に係る接続補助ピンの平面図である。接続補助ピン１６は、導電性金具１０に接続導体１５を押し付ける棒状のピン部１７と、ピン部１７を保持し接点開閉器１との結合を補助するピンハウジング１８とで構成されている。ピンハウジング１８は、電線挿入部５に対するピン部１７の挿入箇所を決定する。図１７は、実施の形態２に係る接続補助ピンを用いて実施の形態１に係る接点開閉器と熱動継電器とを結合した電磁開閉器の斜視図である。図１８は、実施の形態２に係る接続補助ピンを用いて実施の形態１に係る接点開閉器と熱動継電器とを結合した電磁開閉器の正面図である。ピン部１７は、電線挿入部５への挿入方向に対する傾きを有する傾斜面１７１を有する。 Embodiment 2.
FIG. 15 is a perspective view of the connection auxiliary pin according to the second embodiment of the present invention. FIG. 16 is a plan view of the connection auxiliary pin according to the second embodiment. The connection auxiliary pin 16 is composed of a rod-shaped pin portion 17 that presses the connection conductor 15 against the conductive metal fitting 10, and a pin housing 18 that holds the pin portion 17 and assists the connection with the contact switch 1. The pin housing 18 determines the insertion position of the pin portion 17 with respect to the electric wire insertion portion 5. FIG. 17 is a perspective view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are coupled by using the connection auxiliary pin according to the second embodiment. FIG. 18 is a front view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using a connection auxiliary pin according to the second embodiment. The pin portion 17 has an inclined surface 171 having an inclination with respect to the insertion direction into the electric wire insertion portion 5.
　図１９は、実施の形態２に係る接続補助ピンを用いて実施の形態１に係る接点開閉器と熱動継電器とを結合した電磁開閉器の断面図である。図１９は、図１８中のXIX-XIX線に沿った断面を示している。図２０は、実施の形態２に係る接続補助ピンを用いて実施の形態１に係る接点開閉器と熱動継電器とを結合した電磁開閉器の断面図である。図２０は、図１８中のXX-XX線に沿った断面を示している。接続補助ピン１６は、接続導体１５が結合した相の電線挿入部５の開口部７ａから挿入される。ピンハウジング１８により挿入箇所の位置が決定され、ピン部１７の傾斜面１７１は接続導体１５の導電性金具１０の平面部２１及び導体押さえ部２３と接している逆側に接触する。完全に挿入されると、位置の関係によりピン部１７と接続導体１５は干渉し、接続導体１５を平面部２１の方向及び導体押さえ部２３の方向へ圧接する。 FIG. 19 is a cross-sectional view of an electromagnetic switch in which the contact switch and the thermal relay according to the first embodiment are coupled by using the connection auxiliary pin according to the second embodiment. FIG. 19 shows a cross section along the XIX-XIX line in FIG. FIG. 20 is a cross-sectional view of an electromagnetic switch in which a contact switch and a thermal relay according to the first embodiment are coupled by using the connection auxiliary pin according to the second embodiment. FIG. 20 shows a cross section along the line XX-XX in FIG. The connection auxiliary pin 16 is inserted through the opening 7a of the electric wire insertion portion 5 of the phase to which the connection conductor 15 is connected. The position of the insertion point is determined by the pin housing 18, and the inclined surface 171 of the pin portion 17 comes into contact with the flat surface portion 21 of the conductive metal fitting 10 of the connecting conductor 15 and the opposite side in contact with the conductor holding portion 23. When completely inserted, the pin portion 17 and the connecting conductor 15 interfere with each other due to the positional relationship, and the connecting conductor 15 is pressed against the plane portion 21 and the conductor holding portion 23.
　また、ピン部１７は接続導体１５と接触しており、かつ導電性金具１０の枠部１０ａと電気的に接続されているため、新たな通電路を確保する機能も併せ持つ。 Further, since the pin portion 17 is in contact with the connecting conductor 15 and is electrically connected to the frame portion 10a of the conductive metal fitting 10, it also has a function of securing a new energizing path.
　接続補助ピン１６を電線挿入部５に取り付けるため、ピン部１７はスプリング式端子８に保持され、固定力は常に担保される。 Since the connection auxiliary pin 16 is attached to the electric wire insertion portion 5, the pin portion 17 is held by the spring type terminal 8 and the fixing force is always secured.
　また、接続補助ピン１６が接続導体１５と導電性金具１０との接触圧力を担保するためには、接続導体１５の導体接触部１０ｂへの押付け量を確保する必要がある。そのため、接続補助ピン１６を電線挿入部５に圧入する必要があるが、圧入の完了を常に数値的に管理することは困難であり、接続した際に圧入不足となる可能性がある。 Further, in order for the connection auxiliary pin 16 to secure the contact pressure between the connection conductor 15 and the conductive metal fitting 10, it is necessary to secure the pressing amount of the connection conductor 15 against the conductor contact portion 10b. Therefore, it is necessary to press-fit the connection auxiliary pin 16 into the electric wire insertion portion 5, but it is difficult to always numerically control the completion of press-fitting, and there is a possibility that the press-fitting will be insufficient when connected.
　図２１は、実施の形態２に係る接続補助ピンの未使用時の断面図である。図２１は、図１６中のXXI-XXI線に沿った断面を示している。図２２は、実施の形態２に係る接続補助ピンの電磁開閉器への圧入後の断面図である。接続補助ピン１６が未使用時には、ピン部１７のハウジング結合部１７ａは、ピンハウジング１８の第１係合部１８ａに係合している。ピンハウジング１８の第１係合部１８ａの径は、接点開閉器１の挿入口部材７の筒状部７ｂの径と同じである。第１係合部１８ａは、ハウジング結合部１７ａによって押し広げられて弾性変形している。接続補助ピン１６が電線挿入部５に圧入される際に、ピン部１７に圧入の反力が発生する。圧入が完了する挿入圧力に達した際に、反力によりピン部１７のハウジング結合部１７ａが凸部１８ｃを乗り越えて第２係合部１８ｂに係合する。すなわち、電線挿入部５への挿入時にピン部１７が受ける反力が一定値を超えると、ピン部１７は凸部１８ｃを乗り越えて第２係合部１８ｂに係合する。凸部１８ｃをピン部１７のハウジング結合部１７ａが乗り越える際に、振動及び係合音が発生するため、接続補助ピン１６の挿入者は、圧入が完了したことを振動及び係合音に基づいて認識することができる。凸部１８ｃを乗り越えて第２係合部１８ｂにハウジング結合部１７ａが移動すると、第１係合部１８ａは元の形状に復元し、ハウジング結合部１７ａは、第２係合部１８ｂに固定される。 FIG. 21 is a cross-sectional view of the connection auxiliary pin according to the second embodiment when not in use. FIG. 21 shows a cross section along the XXI-XXI line in FIG. FIG. 22 is a cross-sectional view of the connection auxiliary pin according to the second embodiment after being press-fitted into the electromagnetic switch. When the connection auxiliary pin 16 is not in use, the housing coupling portion 17a of the pin portion 17 is engaged with the first engaging portion 18a of the pin housing 18. The diameter of the first engaging portion 18a of the pin housing 18 is the same as the diameter of the tubular portion 7b of the insertion port member 7 of the contact switch 1. The first engaging portion 18a is expanded and elastically deformed by the housing connecting portion 17a. When the connection auxiliary pin 16 is press-fitted into the electric wire insertion portion 5, a reaction force of press-fitting is generated in the pin portion 17. When the insertion pressure at which the press-fitting is completed is reached, the housing coupling portion 17a of the pin portion 17 gets over the convex portion 18c and engages with the second engaging portion 18b due to the reaction force. That is, when the reaction force received by the pin portion 17 when being inserted into the electric wire insertion portion 5 exceeds a certain value, the pin portion 17 gets over the convex portion 18c and engages with the second engaging portion 18b. When the housing coupling portion 17a of the pin portion 17 gets over the convex portion 18c, vibration and engagement noise are generated. Therefore, the inserter of the connection auxiliary pin 16 determines that the press-fitting is completed based on the vibration and engagement noise. Can be recognized. When the housing coupling portion 17a moves over the convex portion 18c to the second engaging portion 18b, the first engaging portion 18a is restored to its original shape, and the housing coupling portion 17a is fixed to the second engaging portion 18b. To.
　実施の形態２に係る接続補助ピン１６は、電線挿入部５への挿入方向に対して傾きを有する傾斜面１７１を有し、電線挿入部５へ挿入された際に、傾斜面１７１は、接続導体１５を導電性金具１０側に付勢するため、接続導体１５と導電性金具１０との接触圧力を高くし、接続導体１５と導電性金具１０との電気的な接続の信頼性を高めることができる。 The connection auxiliary pin 16 according to the second embodiment has an inclined surface 171 that is inclined with respect to the insertion direction into the electric wire inserting portion 5, and when inserted into the electric wire inserting portion 5, the inclined surface 171 is connected. Since the conductor 15 is urged toward the conductive metal fitting 10, the contact pressure between the connecting conductor 15 and the conductive metal fitting 10 is increased, and the reliability of the electrical connection between the connecting conductor 15 and the conductive metal fitting 10 is enhanced. Can be done.
　以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
　１　接点開閉器、２，１３　ケース、３　リアケース、４，５，６　電線挿入部、７　挿入口部材、７ａ　開口部、７ｂ　筒状部、７ｃ　工具挿入口、７ｄ　検電孔、８　スプリング式端子、９　ハウジング、９ａ　導体挿入口、９ｂ　薄肉部、１０　導電性金具、１０ａ　枠部、１０ｂ　導体接触部、１０ｇ　前方案内部、１０ｈ　後方案内部、１１　スプリング、１２　熱動継電器、１４　カバー、１５　接続導体、１５ａ　側面、１６　接続補助ピン、１７　ピン部、１７ａ　ハウジング結合部、１８　ピンハウジング、１８ａ　第１係合部、１８ｂ　第２係合部、１８ｃ　凸部、２１　平面部、２２　曲面部、２３　導体押さえ部、３１　第１の部位、３２　第２の部位、３３　第３の部位、３４　第４の部位、３５　第５の部位、３６　第６の部位、４１　可動接触子、５２　固定鉄心、５４　可動鉄心、５７　クロスバー、５９　連結板、６０　開閉部、６１　電磁石部、６２　可動部、６６　操作コイル、１００，１１０　筐体、１７１　傾斜面。 1 contact switch, 2,13 case, 3 rear case, 4,5,6 wire insertion part, 7 insertion port member, 7a opening, 7b tubular part, 7c tool insertion port, 7d voltage detection hole, 8 spring type Terminal, 9 housing, 9a conductor insertion port, 9b thin wall part, 10 conductive metal fittings, 10a frame part, 10b conductor contact part, 10g front guide part, 10h rear guide part, 11 spring, 12 thermal relay, 14 cover, 15 Connection conductor, 15a side surface, 16 connection auxiliary pin, 17 pin part, 17a housing joint part, 18 pin housing, 18a first engagement part, 18b second engagement part, 18c convex part, 21 flat part, 22 curved part, 23 Conductor holding part, 31 1st part, 32 2nd part, 33 3rd part, 34 4th part, 35 5th part, 36 6th part, 41 movable contact, 52 fixed iron core, 54 movable iron core, 57 crossbar, 59 connecting plate, 60 opening / closing part, 61 electromagnet part, 62 movable part, 66 operating coil, 100, 110 housing, 171 inclined surface.

Claims (8)

  1. 　負荷機器に電力を供給する電源に接続される電線が挿入される第１の電線挿入部と、前記負荷機器に接続される電線が挿入される第２の電線挿入部とを備え、前記第１の電線挿入部及び前記第２の電線挿入部の各々が正面方向に開口した筐体と、
    　前記第１の電線挿入部及び前記第２の電線挿入部にそれぞれ設置された導電性金具と、
    　前記第１の電線挿入部の導電性金具と前記第２の電線挿入部の導電性金具とを電気的に接続するか、絶縁するかを切り換える開閉部とを有し、
    　前記筐体は、前記第１の電線挿入部の導電性金具又は前記第２の電線挿入部の導電性金具に接するまで棒状の接続導体を前記第１の電線挿入部と前記第２の電線挿入部との配列方向である第１の方向から挿入可能な導体挿入口を有することを特徴とする接点開閉器。     The first wire insertion section is provided with a first wire insertion section into which an electric wire connected to a power source for supplying electric power to the load device is inserted, and a second wire insertion section into which an electric wire connected to the load device is inserted. And the housing in which each of the electric wire insertion part and the second electric wire insertion part is opened in the front direction.
    Conductive metal fittings installed in the first electric wire insertion portion and the second electric wire insertion portion, respectively.
    It has an opening / closing portion for switching between electrically connecting or insulating the conductive metal fitting of the first electric wire insertion portion and the conductive metal fitting of the second electric wire insertion portion.
    In the housing, a rod-shaped connecting conductor is inserted into the first electric wire insertion portion and the second electric wire until it comes into contact with the conductive metal fitting of the first electric wire insertion portion or the conductive metal fitting of the second electric wire insertion portion. A contact switch having a conductor insertion port that can be inserted from a first direction that is an arrangement direction with a portion.
  2. 　前記筐体は、前記第１の方向の二つの端面の各々に、前記第１の電線挿入部の導電性金具及び前記第２の電線挿入部の導電性金具を覆うハウジングを有し、
    　前記導体挿入口は、前記ハウジングに形成されていることを特徴とする請求項１に記載の接点開閉器。     The housing has a housing that covers the conductive metal fittings of the first electric wire insertion portion and the conductive metal fittings of the second electric wire insertion portion on each of the two end faces in the first direction.
    The contact switch according to claim 1, wherein the conductor insertion port is formed in the housing.
  3. 　前記ハウジングは、前記導体挿入口を塞ぐ薄肉部を備えることを特徴とする請求項２に記載の接点開閉器。 The contact switch according to claim 2, wherein the housing includes a thin-walled portion that closes the conductor insertion port.
  4. 　前記第１の電線挿入部の導電性金具及び前記第２の電線挿入部の導電性金具は、前記筐体の前記第１の方向の二つの端面のうちの一方と対向する部位に、前記導体挿入口を通じて前記筐体内に挿入された前記接続導体と接触する導体接触部を備えることを特徴とする請求項１から３のいずれか１項に記載の接点開閉器。 The conductive metal fitting of the first electric wire insertion portion and the conductive metal fitting of the second electric wire insertion portion are formed on the conductor at a portion of the housing facing one of the two end faces in the first direction. The contact switch according to any one of claims 1 to 3, further comprising a conductor contact portion that comes into contact with the connecting conductor inserted into the housing through the insertion port.
  5. 　前記導体接触部は、前記第１の方向と垂直な方向に前記接続導体を案内する曲面部と、前記曲面部による前記接続導体の案内先に配置されて、前記接続導体の側面と接触する平面部とを備えることを特徴とする請求項４に記載の接点開閉器。 The conductor contact portion is arranged at a curved surface portion that guides the connecting conductor in a direction perpendicular to the first direction and a guide destination of the connecting conductor by the curved surface portion, and is a flat surface that contacts the side surface of the connecting conductor. The contact switch according to claim 4, further comprising a unit.
  6. 　前記導体接触部は、前記第１の方向と垂直な平面において間隔を空けて相対する一対の案内部を備え、
    　前記一対の案内部の各々は、前記筐体の前記第１の方向の二つの端面のうちの一方と対向する面が、前記一対の案内部の対の相手へ向かう方向へ、向きが連続的に変化する曲面であることを特徴とする請求項４に記載の接点開閉器。     The conductor contact portion includes a pair of guide portions that face each other at intervals in a plane perpendicular to the first direction.
    Each of the pair of guides has a continuous direction in which the surface of the housing facing one of the two end faces in the first direction faces the other of the pair of guides. The contact switch according to claim 4, wherein the contact switch has a curved surface that changes to.
  7. 　請求項１から６のいずれか１項に記載の接点開閉器の前記第１の電線挿入部又は前記第２の電線挿入部に挿入される接続補助ピンであって、
    　前記第１の電線挿入部又は前記第２の電線挿入部への挿入方向に対して傾きを有する傾斜面を有し、
    　前記第１の電線挿入部又は前記第２の電線挿入部へ挿入された際に、前記傾斜面は、前記接続導体を前記第１の電線挿入部の導電性金具又は前記第２の電線挿入部の導電性金具側に付勢することを特徴とする接続補助ピン。     A connection auxiliary pin inserted into the first electric wire insertion portion or the second electric wire insertion portion of the contact switch according to any one of claims 1 to 6.
    It has an inclined surface that is inclined with respect to the insertion direction into the first electric wire insertion portion or the second electric wire insertion portion.
    When inserted into the first electric wire insertion portion or the second electric wire insertion portion, the inclined surface has the connecting conductor connected to the conductive metal fitting of the first electric wire insertion portion or the second electric wire insertion portion. A connection auxiliary pin characterized by urging the conductive metal fittings side of the wire.
  8. 　棒状のピン部と、前記ピン部を保持するピンハウジングとを有し、
    　前記ピンハウジングは、前記ピン部が係合した第１係合部と、前記第１係合部よりも前記第１の電線挿入部又は前記第２の電線挿入部への挿入方向の後方に設けられた第２係合部とを、前記第１係合部と前記第２係合部との間に設けられた凸部とを備え、
    　前記第１の電線挿入部又は前記第２の電線挿入部への挿入時に前記ピン部が受ける反力が一定値を超えると、前記ピン部は前記凸部を乗り越えて前記第２係合部に係合することを特徴とする請求項７に記載の接続補助ピン。     It has a rod-shaped pin portion and a pin housing that holds the pin portion.
    The pin housing is provided behind the first engaging portion with which the pin portion is engaged and the first engaging portion in the insertion direction into the first electric wire inserting portion or the second electric wire inserting portion. The second engaging portion is provided with a convex portion provided between the first engaging portion and the second engaging portion.
    When the reaction force received by the pin portion when inserted into the first electric wire insertion portion or the second electric wire insertion portion exceeds a certain value, the pin portion gets over the convex portion and becomes the second engaging portion. The connection auxiliary pin according to claim 7, wherein the connection auxiliary pin is engaged.
PCT/JP2019/041163 2019-10-18 2019-10-18 Contact switch and connection auxiliary pin WO2021075056A1 (en)

Priority Applications (4)

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PCT/JP2019/041163 WO2021075056A1 (en) 2019-10-18 2019-10-18 Contact switch and connection auxiliary pin
CN201980101366.9A CN114600217B (en) 2019-10-18 2019-10-18 Contact switch and connection auxiliary pin
JP2020511404A JP6732155B1 (en) 2019-10-18 2019-10-18 Contact switch and auxiliary connection pin
KR1020227008977A KR20220041941A (en) 2019-10-18 2019-10-18 Contact switch and connection auxiliary pins

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JPS56138883A (en) * 1980-03-31 1981-10-29 Fujitsu Ltd Multiconnector
JPH0631074U (en) * 1992-09-25 1994-04-22 日東工業株式会社 Terminal device
JP2004071402A (en) * 2002-08-07 2004-03-04 Molex Inc Outlet device
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JP6732155B1 (en) 2020-07-29
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JPWO2021075056A1 (en) 2021-11-04
KR20220041941A (en) 2022-04-01

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