WO2020189377A1 - Dispositif disjoncteur - Google Patents

Dispositif disjoncteur Download PDF

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Publication number
WO2020189377A1
WO2020189377A1 PCT/JP2020/010043 JP2020010043W WO2020189377A1 WO 2020189377 A1 WO2020189377 A1 WO 2020189377A1 JP 2020010043 W JP2020010043 W JP 2020010043W WO 2020189377 A1 WO2020189377 A1 WO 2020189377A1
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WO
WIPO (PCT)
Prior art keywords
electric circuit
circuit portion
conductive
blocking device
conductive portion
Prior art date
Application number
PCT/JP2020/010043
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English (en)
Japanese (ja)
Inventor
純久 福田
健児 金松
一寿 木下
中村　真人
進弥 木本
瞬 伊藤
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2019169812A external-priority patent/JP2020161468A/ja
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2020189377A1 publication Critical patent/WO2020189377A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current

Definitions

  • the present disclosure relates to a breaking device, and more specifically, to a breaking device that cuts off an electric circuit.
  • the circuit breaker described in Patent Document 1 includes at least one conductor designed to be connected to an electric circuit, a housing, a matrix, a punch, and an actuator using a pyrotechnic. ..
  • the actuator is designed to move the punch from a first position to a second position when ignited.
  • the punch and matrix break at least one conductor into at least two separate parts as the punch moves from the first position to the second position.
  • An object of the present disclosure is to provide a breaking device capable of suppressing the generation of an arc.
  • the blocking device includes a housing having an internal space, a first electric circuit portion provided in the housing, a second electric circuit portion provided in the housing, and the housing.
  • a separation portion which is arranged in the internal space and electrically connects the first electric circuit portion and the second electric circuit portion to each other, and a first conductive portion are provided, and the first electric circuit portion and the first electric circuit portion move in the internal space. It includes an operation pin that separates the separation unit from at least one of the second electric circuit unit, and a drive unit that moves the operation pin.
  • the separation unit is located in a first direction from the operation pin, and is said to be the same.
  • the separation unit When the operation pin is moved in the first direction by the drive unit, the separation unit is separated from the first electric circuit unit or the second electric circuit unit by the operation pin, and the separation unit is the first electric circuit unit or After being separated from the second electric circuit portion, the first conductive portion moves between the first electric circuit portion and the second electric circuit portion, and electrically connects the first electric circuit portion and the second electric circuit portion. To connect to.
  • the blocking device of the present disclosure has an advantage that it is possible to suppress the generation of an arc.
  • FIG. 1 is a cross-sectional perspective view of the blocking device of one embodiment.
  • FIG. 2 is a perspective view of the breaking device of the same.
  • FIG. 3 is a cross-sectional view of the breaking device of the same.
  • FIG. 4 is a cross-sectional view of the breaking device of the same.
  • FIG. 5 is a cross-sectional view of the breaking device of the same.
  • FIG. 6 is an exploded perspective view of a main part including an operation pin of the breaking device of the same as above.
  • FIG. 7 is an exploded perspective view of a main part including an operation pin of the breaking device of the first modification.
  • FIG. 8 is a cross-sectional view of the blocking device of the second modification.
  • FIG. 1 is a cross-sectional perspective view of the blocking device of one embodiment.
  • FIG. 2 is a perspective view of the breaking device of the same.
  • FIG. 3 is a cross-sectional view of the breaking device of the same.
  • FIG. 4 is a cross-section
  • FIG. 9 is an exploded perspective view of a main part including an operation pin of the breaking device of the same as above.
  • FIG. 10 is an exploded perspective view of a main part including an operation pin of the breaking device of the modified example 3.
  • FIG. 11 is a cross-sectional view of the main part of the blocking device of the modified example 4 as viewed from above.
  • FIG. 12 is a cross-sectional view of the main part of the breaking device as seen from the side.
  • FIG. 13 is a perspective view of the operation pin of the breaking device of the same.
  • FIG. 14 is a cross-sectional view of the main part of the breaking device as seen from the side.
  • FIG. 15 is a perspective view of the operation pin of the breaking device of the modified example 5.
  • FIG. 10 is an exploded perspective view of a main part including an operation pin of the breaking device of the modified example 3.
  • FIG. 11 is a cross-sectional view of the main part of the blocking device of the modified example 4 as viewed from above.
  • FIG. 12
  • FIG. 16 is a side view showing a main part of the above-mentioned breaking device.
  • FIG. 17 is a side view showing a main part of the above-mentioned breaking device.
  • FIG. 18 is a side view showing a main part of the above-mentioned breaking device.
  • FIG. 19 is a cross-sectional view of the main part of the blocking device of the modified example 6 as viewed from the side.
  • FIG. 20 is a cross-sectional view of the main part of the blocking device of the modified example 7 as viewed from the side.
  • FIG. 21 is a cross-sectional view of the main part of the blocking device of the modified example 8 as viewed from the side.
  • FIG. 22 is a cross-sectional perspective view of the blocking device of the modified example 9.
  • FIG. 23 is an exploded perspective view of a main part including the operation pin of the breaking device of the same as above.
  • FIG. 24 is a cross-sectional view of the breaking device of the same.
  • FIG. 25 is a cross-sectional view of the breaking device of the same.
  • FIG. 26 is a cross-sectional view of the breaking device of the same.
  • FIG. 27 is a cross-sectional view of the breaking device of the same.
  • FIG. 28 is a cross-sectional view of the breaking device of the same.
  • FIG. 29 is a cross-sectional view of the main part of the blocking device of the modified example 10 as viewed from the side.
  • FIG. 30 is a cross-sectional view of the blocking device of the modified example 11.
  • FIG. 31 is an exploded perspective view of a main part including an operation pin of the above-mentioned breaking device.
  • FIG. 32 is a cross-sectional view of the main part of the blocking device of the modified example 12 as viewed from the side.
  • each of the following embodiments is only a part of the various embodiments of the present disclosure.
  • Each of the following embodiments can be changed in various ways depending on the design and the like as long as the object of the present disclosure can be achieved.
  • each figure described in each of the following embodiments is a schematic view, and the ratio of the size and the thickness of each component in the figure does not necessarily reflect the actual dimensional ratio. Absent.
  • the cutoff device 1 of the present embodiment includes a first electric circuit portion 21, a second electric circuit portion 22, a drive mechanism 7, and an operation pin 8. , Is equipped. Further, the cutoff device 1 includes a third electric circuit portion (separation portion) 23 and a housing 9.
  • the first electric circuit portion 21 and the second electric circuit portion 22 are electrically connected to each other.
  • the first electric circuit portion 21 and the second electric circuit portion 22 are electrically connected to each other via the third electric circuit portion 23.
  • the first electric circuit portion 21 and the second electric circuit portion 22 together with the third electric circuit portion 23 constitute one conductive member 2.
  • the third electric circuit portion 23 is a portion of the conductive member 2 that connects the first electric circuit portion 21 and the second electric circuit portion 22.
  • the conductive member 2 includes a first electric circuit portion 21 and a second electric circuit portion 22.
  • the conductive member 2 includes a third electric circuit portion 23. As shown in FIG. 1, the third electric circuit portion 23 is provided in the internal space of the housing 9.
  • the drive mechanism 7 moves the operation pin 8 (see FIG. 3).
  • the operation pin 8 is driven by the drive mechanism 7 and moves.
  • the operation pin 8 separates the first electric circuit portion 21 and the second electric circuit portion 22.
  • the operation pin 8 here separates the first electric circuit portion 21 and the second electric circuit portion 22 by breaking the conductive member 2.
  • the operation pin 8 is driven by the drive mechanism 7 to move and directly pushes the third electric circuit portion 23, whereby the third electric circuit portion 23 is pushed from the first electric circuit portion 21 and the second electric circuit portion 22. Separate. That is, the operation pin 8 moves in the internal space of the housing 9 from at least one (here, both) of the first electric circuit portion 21 and the second electric circuit portion 22 to the third electric circuit portion (separation portion) 23.
  • the operation pin 8 moves in the internal space of the housing 9 from at least one (here, both) of the first electric circuit portion 21 and the second electric circuit portion 22 to the third electric circuit portion (separation portion) 23.
  • the blocking device 1 includes a conductive portion 4 and an insulating portion 5.
  • the conductive portion 4 is arranged between the rear end (upper end of FIG. 1) of the operation pin 8 and the third electric circuit portion (separation portion) 23 in the moving direction of the operation pin 8 (vertical direction of FIGS. 4 and 5). It moves in conjunction with the operation pin 8.
  • the conductive portion 4 and the insulating portion 5 are a part of the operation pin 8. That is, the operation pin 8 has a conductive portion 4 and an insulating portion 5.
  • the conductive portion 4 enters between the opened first electric circuit portion 21 and the second electric circuit portion 22. As a result, the conductive portion 4 electrically connects (conducts) the first electric circuit portion 21 and the second electric circuit portion 22.
  • the insulating portion 5 is opened. It enters between the first electric circuit portion 21 and the second electric circuit portion 22. As a result, the insulating portion 5 insulates between the first electric circuit portion 21 and the second electric circuit portion 22.
  • the blocking device 1 of the present embodiment after the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other, the first electric circuit portion 21 and the second electric circuit portion 22 are temporarily separated by the conductive portion 4. ) Conducted. Then, in the blocking device 1, after the first electric circuit portion 21 and the second electric circuit portion 22 are electrically connected by the conductive portion 4, the first electric circuit portion 21 and the second electric circuit portion 22 are insulated by the insulating portion 5. That is, when the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other, they are once conducted through the conductive portion 4 and then insulated (here, by the insulating portion 5).
  • the current flowing through the conductive member 2 when insulating the first electric circuit portion 21 and the second electric circuit portion 22 (here, by the insulating portion 5). It is possible to reduce the size of. Therefore, it is possible to suppress the generation of an arc when insulating the first electric circuit portion 21 and the second electric circuit portion 22. It should be noted that suppressing the generation of an arc is not limited to not generating the arc, but may also include shortening the duration of the generated arc or reducing the energy of the generated arc.
  • the blocking device 1 includes a conductive member 2 including a first electric circuit portion 21, a second electric circuit portion 22, and a third electric circuit portion 23 (separation portion), and an operation pin 8 including a conductive portion 4 and an insulating portion 5. And a drive mechanism 7.
  • the conductive portion 4 and the insulating portion 5 are a part of the operation pin 8.
  • the blocking device 1 includes a housing 9 as shown in FIG.
  • the blocking device 1 is provided in, for example, an electric vehicle.
  • the cutoff device 1 is provided in, for example, an electric circuit that connects a power source of an electric vehicle and a motor, and switches whether or not a current is supplied from the power source to the motor.
  • the operation of the drive mechanism 7 in the shutoff device 1 is controlled by, for example, a control unit (ECU: Electronic Control Unit or the like) provided in the electric vehicle.
  • ECU Electronic Control Unit or the like
  • the moving direction of the operating pin 8 and the direction in which the operating pin 8 and the conductive member 2 face each other is referred to as a vertical direction
  • the conductive member 2 is viewed from the operating pin 8.
  • the side is called the lower side
  • the operation pin 8 side when viewed from the conductive member 2 is called the upper side.
  • the longitudinal direction of the conductive member 2 in which the first electric circuit portion 21 and the second electric circuit portion 22 are lined up is referred to as a left-right direction.
  • a direction orthogonal to both the vertical direction and the horizontal direction is referred to as a front-back direction. It should be noted that these directions are for convenience of explaining the structure of the breaking device 1, and do not specify the orientation of the breaking device 1 when the breaking device 1 is used.
  • the conductive member 2 has a plate shape having a thickness in the vertical direction.
  • the conductive member 2 is made of, for example, copper.
  • the conductive member 2 includes a first electric circuit portion 21, a second electric circuit portion 22, and a third electric circuit portion 23.
  • the first electric circuit portion 21 and the second electric circuit portion 22 are connected to each other via the third electric circuit portion 23, and are electrically connected to each other.
  • the third electric circuit portion 23 is provided between the first electric circuit portion 21 and the second electric circuit portion 22.
  • the first electric circuit portion 21, the second electric circuit portion 22, and the third electric circuit portion 23 are integrally formed. In the longitudinal direction of the conductive member 2, the first electric circuit portion 21, the third electric circuit portion 23, and the second electric circuit portion 22 are arranged in this order.
  • the first electric circuit portion 21 has a rectangular plate-shaped portion and a protruding portion protruding from the side surface of the rectangular plate-shaped portion.
  • the protruding end face of the protruding portion is concave.
  • the second electric circuit portion 22 has a rectangular plate-shaped portion and a protruding portion protruding from the side surface of the rectangular plate-shaped portion. The protruding end face of the protruding portion is concave.
  • the first electric circuit portion 21 has a first terminal 211.
  • the second electric circuit portion 22 has a second terminal 221.
  • the first terminal 211 and the second terminal 221 are electrically connected to both ends of an electric circuit that connects the power supply of the electric vehicle and the motor.
  • Each of the first terminal 211 and the second terminal 221 has, for example, a through hole.
  • Each of the first terminal 211 and the second terminal 221 can be electrically connected to the electric circuit by passing a screw through the through hole and connecting the screw to the terminal of the electric circuit.
  • the third electric circuit portion 23 has a plate shape having a width (dimension in the front-rear direction) narrower than that of the first electric circuit portion 21 and the second electric circuit portion 22. That is, the conductive member 2 has a substantially H shape when viewed from above.
  • the conductive member 2 has a groove 24 between the first electric circuit portion 21 and the third electric circuit portion 23, and between the second electric circuit portion 22 and the third electric circuit portion 23.
  • the groove 24 is formed on the first surface F1 of the first surface F1 (see FIG. 3) of the conductive member 2 and the second surface F2 (see FIG. 3) opposite to the first surface F1.
  • the first surface F1 is a surface facing the operation pin 8
  • the second surface F2 is a surface facing the relaxation space S2.
  • the depth direction of each groove 24 is along the thickness direction of the conductive member 2.
  • Each of the two grooves 24 is partially cylindrical.
  • the two grooves 24 are formed concentrically.
  • the two grooves 24 have the same diameter on the outside (the side far from the center) and the same diameter on the inside (the side near the center).
  • the two grooves 24 define the boundary portion 240 between the first electric circuit portion 21 and the third electric circuit portion 23, and the boundary portion 240 between the second electric circuit portion 22 and the third electric circuit portion 23.
  • the breaking strength of the boundary portion 240 is equal to or less than the breaking strength of the first electric path portion 21 and the second electric path portion 22. Further, the breaking strength of the boundary portion 240 is equal to or less than the breaking strength of the third electric circuit portion 23.
  • a boundary portion 240 is provided between the first electric circuit portion 21 and the third electric circuit portion 23, and a boundary portion 240 is provided between the second electric circuit portion 22 and the third electric circuit portion 23.
  • the boundary portion 240 may be considered to be a part of the first electric circuit portion 21, the second electric circuit portion 22, or the third electric circuit portion 23.
  • the housing 9 is made of, for example, resin.
  • the housing 9 has a space (internal space) inside.
  • the housing 9 has a first accommodating portion 91 and a second accommodating portion 97.
  • the first accommodating portion 91 has an accommodating space S1 for accommodating a part of the operation pin 8 before movement.
  • the second accommodating portion 97 has a space (relaxation space S2) inside thereof.
  • the first accommodating portion 91 includes a first body 92, a first cover 93, and a cap 94.
  • the first body 92 has a rectangular plate-shaped plate portion 921 and a tubular portion 922.
  • the plate portion 921 has a through hole 920 having a circular cross section in the center thereof.
  • the tubular portion 922 is provided on one surface (upper surface) of the plate portion 921.
  • the outer diameter of the tubular portion 922 is a size that fits in the plate portion 921.
  • the outer surface of the tubular portion 922 has a cylindrical surface shape.
  • the inner surface of the tubular portion 922 has a conical pedestal shape in which one end (lower end) is connected to the through hole 920 and the diameter gradually increases toward the upper side away from the plate portion 921.
  • the first cover 93 has a rectangular box shape with an open lower surface.
  • the first cover 93 covers the first body 92 from above.
  • the first cover 93 has a through hole 930 having a circular cross section and extending in the vertical direction at the center thereof.
  • the first cover 93 has a recess 931 on its lower surface.
  • the recess 931 has a first recess 932 having a cylindrical inner surface and a second recess 933 recessed upward from the bottom surface (upper surface) of the first recess 932 in a bowl shape.
  • the first recess 932 has a shape in which the tubular portion 922 fits.
  • the recess 931 has a ring-shaped third recess 934 connected to the first recess 932 around the first recess 932 on the lower surface of the first cover 93.
  • the accommodation space S1 is surrounded by the inner surface of the tubular portion 922 of the first body 92 and the inner surface of the second recess 933 of the first cover 93. Is formed.
  • An O-ring 61 is arranged in the third recess 934 of the first cover 93 so as to be sandwiched between the third recess 934 and the upper surface of the plate portion 921 of the first body 92. As a result, the gap between the first body 92 and the first cover 93 is sealed, and the airtightness of the accommodation space S1 can be ensured.
  • the cap 94 is put on the upper surface of the first cover 93.
  • the cap 94 includes a base portion 95 and a covering portion 96.
  • the base portion 95 and the covering portion 96 may be integrated or separate.
  • the base portion 95 has a shape including a rectangular parallelepiped portion and a columnar portion placed on the rectangular parallelepiped portion.
  • Through holes 950 penetrate vertically in the center of the base 95.
  • the through hole 950 includes a columnar recess 951 formed in the center of the lower surface of the base 95 so as to be recessed upward, and a storage recess 952 formed on the upper surface of the base 95.
  • the bottom surface (upper surface) of the recess 951 and the bottom surface (lower surface) of the accommodation recess 952 are connected to each other.
  • the cross-sectional shape of the recess 951 (the shape in the plane orthogonal to the vertical direction) is the same as the cross-sectional shape of the through hole 930 of the first cover 93.
  • the recess 951 of the base 95 and the through hole 930 of the first cover 93 are connected. That is, the recess 951 of the cap 94 is connected to the through hole 930 of the first cover 93, the accommodation space S1, and the through hole 920 of the first body 92.
  • a ring-shaped recess 953 is provided on the lower surface of the base 95, and an O-ring 62 is arranged in the recess 953.
  • the operation pin 8 is arranged in a space composed of the recess 951 of the base 95 of the cap 94, the through hole 930 of the first cover 93, the accommodation space S1, and the through hole 920 of the first body 92. Further, the gas generator 70 is arranged in the space inside the accommodation recess 952 of the cap 94.
  • the covering portion 96 has a bottomed cylindrical shape with an open lower surface. A through hole for exposing the upper surface of the gas generator 70 is formed in the center of the upper wall of the covering portion 96.
  • the covering portion 96 covers the base portion 95 so as to cover the upper surface of the base portion 95.
  • the second accommodating portion 97 includes a second body 98 and a second cover 99.
  • the second body 98 has a rectangular box shape.
  • the second body 98 has a recess 981 on its upper surface (the surface closer to the operation pin 8).
  • the recess 981 has a first recess 982 having a cylindrical inner surface and a second recess 983 recessed downward from the bottom surface (lower surface) of the first recess 982.
  • the second recess 983 has a cylindrical inner surface having an inner diameter smaller than the inner diameter of the first recess 982, and the boundary portion between the inner bottom surface and the inner surface thereof is curved.
  • the recess 981 has a ring-shaped third recess 984 connected to the first recess 982 around the first recess 982 on the upper surface of the second body 98.
  • the second cover 99 covers the second body 98 from above.
  • the second cover 99 has a shape that is vertically symmetrical with the first body 92.
  • the second cover 99 has a rectangular plate-shaped plate portion 991 and a cylindrical portion 992 having a cylindrical surface-shaped outer surface.
  • the plate portion 991 has a through hole 990 having a circular cross section in the center thereof.
  • the tubular portion 992 is provided on one surface (lower surface) of the plate portion 991.
  • the outer diameter of the tubular portion 992 is a size that fits in the plate portion 991.
  • the outer shape of the tubular portion 992 is a shape that fits into the first recess 982.
  • the inner surface of the tubular portion 992 has a conical pedestal shape in which one end is connected to the through hole 990 and the diameter gradually increases toward the downward direction away from the plate portion 991.
  • the relaxation space S2 is formed so as to be surrounded by the second recess 983 of the second body 98 and the inner surface of the tubular portion 993 of the second cover 99 in a state where the second cover 99 is covered with the second body 98. Will be done.
  • An O-ring 63 is arranged in the third recess 984 of the second body 98 so as to be sandwiched between the third recess 984 and the upper surface of the plate portion 991 of the second cover 99. As a result, the gap between the second body 98 and the second cover 99 is sealed, and the airtightness of the relaxation space S2 can be ensured.
  • the conductive member 2 is arranged between the first body 92 and the second cover 99. More specifically, a recess is formed on the lower surface of the first body 92, and the conductive member 2 is fitted in this recess.
  • the third electric circuit portion 23 and the boundary portion 240 are housed inside the housing 9.
  • the conductive member 2 is arranged so that the third electric circuit portion 23 faces the lower surface of the operation pin 8. Further, in the conductive member 2, the first terminal 211 of the first electric circuit portion 21 and the second terminal 221 of the second electric circuit portion 22 are exposed to the outside of the housing 9.
  • the drive mechanism 7 includes a gas generator 70.
  • the drive mechanism 7 moves the operation pin 8 in conjunction with the pressure of the gas generated by the gas generator 70.
  • the gas generator 70 is arranged in the accommodation recess 952 of the housing 9. As shown in FIG. 1, the gas generator 70 includes a fuel 74, a case 71, two pin electrodes 72 for energization, and a heat generating element 73.
  • Case 71 is a hollow columnar shape.
  • the blocking device 1 further includes an O-ring 64 interposed between the outer peripheral surface of the case 71 and the inner surface of the accommodating recess 952.
  • a cross groove is formed on the lower wall constituting the internal space, and the portion where the groove is formed is more likely to break than the other portions.
  • the fuel 74 is housed in the internal space of the case 71.
  • the fuel 74 burns to generate gas when the temperature rises.
  • the fuel 74 is, for example, explosives such as nitrocellulose, lead azide, black powder, and glycidyl azidopolymer.
  • the two pin electrodes 72 are held in the case 71.
  • the first end of each of the two pin electrodes 72 is exposed to the outside of the housing 9.
  • the second end of each of the two pin electrodes 72 is connected to the heat generating element 73. That is, the heat generating element 73 is connected between the two pin electrodes 72.
  • the heat generating element 73 is arranged in the internal space in which the fuel 74 is housed in the case 71.
  • the heat generating element 73 generates heat when it is energized.
  • the heat generating element 73 is, for example, a nichrome wire or an alloy wire of iron, chromium and aluminum.
  • the gas generator 70 generates gas by burning the fuel 74. More specifically, in the gas generator 70, when the space between the two pin electrodes 72 is energized, the heat generating element 73 generates heat, and the temperature of the fuel 74 around the heat generating element 73 is raised. As a result, the fuel 74 is burned and gas is generated.
  • the operation pin 8 is arranged between the gas generator 70 and the third electric circuit portion 23.
  • the operation pin 8 includes a conductive portion 4 and an insulating portion 5.
  • the main body of the operating pin 8 is composed of the insulating portion 5, and the conductive portion 4 is fixed to the member (insulating portion 5) constituting the operating pin 8.
  • the insulating part 5 has electrical insulation.
  • the insulating portion 5 contains, for example, a resin as a material.
  • the insulating portion 5 (member constituting the operation pin 8) has a long columnar shape in the vertical direction.
  • the diameter of the insulating portion 5 is substantially equal to the diameter of the through hole 920 and the diameter of the through hole 930.
  • the diameter of the insulating portion 5 is smaller than the outer diameter of the groove 24 and larger than the inner diameter of the groove 24.
  • the diameter of the insulating portion 5 may be substantially equal to the diameter outside the groove 24.
  • the insulating portion 5 is arranged in the housing 9 so that the first surface (upper surface) in the height direction faces the gas generator 70 and the second surface (lower surface) faces the conductive member 2.
  • the insulating portion 5 is arranged in the housing 9 so that the first end (upper end) is located in the recess 951 and the through hole 930 and the second end (lower end) is located in the through hole 920. Has been done.
  • a ring-shaped groove 51 along the circumferential direction of the insulating portion 5 is formed on the outer edge of the upper end of the insulating portion 5 (member constituting the operation pin 8).
  • the blocking device 1 further includes an O-ring 65 fitted in the groove 51. The outer edge of the O-ring 65 is in contact with the inner surface of the recess 951.
  • the operation pin 8 is held in the housing 9 inside the recess 951 by the frictional force between the inner surface of the groove 51 and the inner surface of the recess 951 and the O-ring 65.
  • An airtight space (pressurizing chamber 75) is formed in the housing 9 so as to be surrounded by the first surface (upper surface) of the insulating portion 5, the lower surface of the gas generator 70, and the inner surface of the through hole 950. There is. As shown in FIG. 6, a fitting recess 52 having a shape corresponding to the conductive portion 4 and into which the conductive portion 4 is fitted is formed at the lower end of the insulating portion 5.
  • the conductive portion 4 is made of metal.
  • the material of the conductive portion 4 is, for example, stainless steel, tungsten, a nichrome alloy, an alloy of iron, chromium, and aluminum.
  • the metal used as the material of the conductive portion 4 is selected in consideration of the electric resistance value, heat resistance, heat capacity, heat transfer property, etc. of the conductive portion 4.
  • the shape of the conductive portion 4 is selected in consideration of the electrical resistance, heat resistance, heat capacity, heat transfer property, etc. of the conductive portion 4.
  • the material and shape of the conductive portion 4 are selected so that the electric resistance of the conductive portion 4 is equal to or higher than the electric resistance of the third electric circuit portion 23. It is desirable that the material and shape of the conductive portion 4 be selected so that the electric resistance of the conductive portion 4 is larger than the electric resistance of the third electric circuit portion 23.
  • the electrical resistance of the conductive portion 4 means that when the conductive portion 4 is located between the first electric circuit portion 21 and the second electric circuit portion 22, the portion of the conductive portion 4 facing the first electric circuit portion 21 and the second one. 2 This is the electrical resistance between the electric circuit portion 22 and the opposite portion.
  • the electrical resistance of the third electric circuit portion 23 is the first electric circuit portion 21 in the third electric circuit portion 23 when the third electric circuit portion 23 is connected between the first electric circuit portion 21 and the second electric circuit portion 22. It is an electric resistance between the connecting portion with and the connecting portion with the second electric circuit portion 22.
  • the material and shape of the conductive portion 4 are preferably selected so that the heat resistance of the conductive portion 4 is high, the heat capacity is large, and the heat transfer property is high.
  • the material and shape of the conductive portion 4 are selected so that the conductive portion 4 does not melt during the operation of the blocking device 1, for example.
  • the conductive portion 4 includes a first portion 41, a second portion 42, and a third portion 43.
  • the conductive portion 4 has a substantially H-shaped shape when viewed from above.
  • the first portion 41 has a partial cylindrical shape having the same center as the center of the insulating portion 5 (members constituting the operation pin 8).
  • the outer diameter of the first portion 41 is substantially equal to the outer diameter of the insulating portion 5.
  • the outer diameter of the first portion 41 is smaller than the outer diameter of the groove 24 and larger than the inner diameter.
  • the inner diameter of the first portion 41 is smaller than the inner diameter of the groove 24.
  • the first portion 41 has a predetermined height (vertical dimension).
  • the height of the first portion 41 is larger than the thickness (vertical dimension) of the conductive member 2.
  • the height of the first portion 41 is larger than the thickness of the plate portion 921 of the first body 92 (vertical dimension) and smaller than the height of the first body 92 (vertical dimension).
  • the vertical dimension of the first portion 41 is, for example, about 10 mm.
  • the second portion 42 has the same dimensions and shape as the first portion 41, and is at a position point-symmetrical to the center of the insulating portion 5 with respect to the first portion 41.
  • the first portion 41 faces the groove 24 on one side (right side) of the conductive member 2.
  • the second portion 42 faces the groove 24 on the other side (left side) of the conductive member 2.
  • the third part 43 electrically connects the first part 41 and the second part 42.
  • the third portion 43 has a higher electrical resistance than the first portion 41 and the second portion 42.
  • the third portion 43 has a rectangular rod shape connecting the first portion 41 and the second portion 42.
  • the vertical dimension of the third portion 43 is smaller than the vertical dimension of the first portion 41 and the vertical dimension of the second portion 42.
  • the dimensions of the third portion 43 in the front-rear direction are smaller than the dimensions of the first portion 41 in the front-rear direction and the dimensions of the second portion 42 in the front-rear direction. That is, the area of the cross section of the third portion 43 orthogonal to the left-right direction is smaller than that of the first portion 41 and the second portion 42.
  • the third portion 43 has a higher electrical resistance per unit length than the first portion 41 and the second portion.
  • the conductive portion 4 is coupled to the insulating portion 5 (a member constituting the operation pin 8) by being fitted into the fitting recess 52 provided at the lower end of the insulating portion 5.
  • the operation pin 8 is arranged in the housing 9 so that its outer peripheral edge faces the groove 24 (boundary portion 240) of the conductive member 2.
  • the operation pin 8 is arranged in the housing 9 so that the conductive portion 4 comes into contact with the conductive member 2.
  • the first electric path portion 21 and the second electric path portion 22 are connected to each other via the third electric path portion 23. Is electrically connected. Therefore, the conductive member 2 functions as a conducting wire, and the first electric circuit portion 21, the second electric circuit portion 22, and the third electric circuit portion 23 are electrically connected to the first terminal 211 and the second terminal 221. The current supplied from flows.
  • the drive mechanism 7 When the control unit of the electric vehicle or the like energizes between the two pin electrodes 72, the drive mechanism 7 is driven and the heat generating element 73 connected to the pin electrodes 72 generates heat.
  • the fuel 74 is ignited by the heat generated by the heat generating element 73, and the fuel 74 burns to generate gas.
  • the gas increases the pressure of the space containing the fuel 74 in the case 71, breaks the wall (lower wall) constituting this space, and is introduced into the pressurizing chamber 75 through the broken portion to be introduced into the pressurizing chamber 75. Increase the pressure inside. Due to the pressure of the gas in the pressurizing chamber 75, a force in the direction of pushing the third electric circuit portion 23 (downward) acts on the operation pin 8.
  • the downward direction may be represented as the first direction.
  • the operation pin 8 is driven against the frictional force of the O-ring 65, and the lower surface of the operation pin 8 pushes the third electric circuit portion 23.
  • the conductive member 2 has the groove 24 of the boundary portion 240 between the first electric circuit portion 21 and the third electric circuit portion 23, and the second electric circuit portion 23. It is broken in the groove 24 of the boundary portion 240 between the electric circuit portion 22 and the third electric circuit portion 23.
  • the third electric circuit portion (separation portion) 23 is separated from the first electric circuit portion 21 and the second electric circuit portion 22, and the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other.
  • the third electric circuit portion 23 separated from the first electric circuit portion 21 and the second electric circuit portion 22 is pushed by the operation pin 8 and enters the relaxation space S2 below.
  • the operation pin 8 has a conductive portion 4 at its lower end (tip in the traveling direction). Therefore, when the operation pin 8 moves, the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other, and then the conductor is conducted between the opened first electric circuit portion 21 and the second electric circuit portion 22. Part 4 enters. Then, the first portion 41 of the conductive portion 4 contacts (opposes) the separated first electric circuit portion 21, and the second portion 42 contacts (opposes) the separated second electric circuit portion 22. Therefore, the current flowing through the third electric circuit portion 23 will flow through the conductive portion 4.
  • the electric resistance of the conductive portion 4 is larger than the electric resistance of the third electric circuit portion 23. Therefore, the electrical resistance between the first terminal 211 and the second terminal 221 is higher when the first electric circuit portion 21 and the second electric circuit portion 22 are conducted via the conductive portion 4 (see FIG. 4). This is larger than the case where the first electric circuit portion 21 and the second electric circuit portion 22 conduct with each other via the third electric circuit portion (separation portion) 23 (see FIG. 3). In other words, the electrical resistance between the first terminal 211 and the second terminal 221 is better when the first electric circuit portion 21 and the second electric circuit portion 22 are conducted via the conductive portion 4 (see FIG. 4).
  • the first electric circuit portion 21 and the second electric circuit portion 22 are larger than before being separated by the movement of the operation pin 8 (see FIG. 3).
  • the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 is when the first electric circuit portion 21 and the second electric circuit portion 22 are connected via the conductive portion 4 (see FIG. 4).
  • the first electric circuit portion 21 and the second electric circuit portion 22 are smaller than before being separated by the movement of the operation pin 8 (see FIG. 3).
  • the first portion 41 of the conductive portion 4 becomes the first. Move away from the electric circuit section 21. Further, when the distance traveled by the operation pin 8 exceeds a predetermined distance (a distance corresponding to the sum of the thickness of the third electric circuit portion 23 and the height of the second portion 42), the second portion 42 of the conductive portion 4 becomes the second. Separate from the electric circuit section 22. Then, the insulating portion 5 of the operation pin 8 moves between the opened first electric circuit portion 21 and the second electric circuit portion 22.
  • the depth (vertical dimension) of the relaxation space S2 is set so that the insulating portion 5 of the operating pin 8 after movement stays between the opened first electric circuit portion 21 and the second electric circuit portion 22. There is.
  • the first electric circuit portion 21 and the second electric circuit portion 22 are once conducted through the conductive portion 4 and then insulated. That is, the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 is cut off by the insulating portion 5 after its magnitude is reduced by flowing through the conductive portion 4. As a result, the magnitude of the current at the time of interruption becomes smaller than that in the case where the conductive portion 4 is not provided. As a result, according to the blocking device 1 of the present embodiment, it is possible to suppress an arc generated when the first electric circuit portion 21 and the second electric circuit portion 22 are insulated. Further, by suppressing the generation of the arc, the energy of the generated arc can be reduced.
  • the breaking performance can be improved and the breaking device 1 can be downsized.
  • the movement of the operation pin 8 causes the first portion 41 of the conductive portion 4 to face the fracture surface of the first electric circuit portion 21 separated from the third electric circuit portion 23 ( Proximity). Therefore, the arc generated between the first electric circuit portion 21 and the third electric circuit portion 23 moves between the first electric circuit portion 21 and the first portion 41 of the conductive portion 4. Further, as the operation pin 8 moves, the second portion 42 of the conductive portion 4 faces (closes) the fracture surface of the second electric circuit portion 22 separated from the third electric circuit portion 23.
  • the arc generated between the second electric circuit portion 22 and the third electric circuit portion 23 moves between the second electric circuit portion 22 and the second portion 42 of the conductive portion 4. That is, the arc generated between the first electric circuit portion 21 or the second electric circuit portion 22 and the third electric circuit portion 23 is first rather than being extended between the electric circuit portions by the movement of the third electric circuit portion 23. It will move between the electric circuit portion 21 or the second electric circuit portion 22 and the conductive portion 4. Then, as described above, the energy is reduced by passing through the conductive portion 4, and then the energy is cut off by the insulating portion 5. As a result, the cutoff device 1 of the present embodiment can suppress the arc generated when the third electric circuit portion 23 is separated from the first electric circuit portion 21 and the second electric circuit portion 22.
  • the generated arc may melt the conductive portion 4, the first electric circuit portion 21, and the second electric circuit portion 22, vaporize these materials (copper), and increase the pressure in the housing 9. ..
  • the housing 9 since the housing 9 includes the relaxation space S2, it is possible to suppress the degree of pressure increase.
  • the blocking device 1A includes a conductive portion 4A and an insulating portion 5A.
  • the conductive portion 4A and the insulating portion 5A are a part of the operation pin 8A.
  • the main body of the operating pin 8A is composed of an insulating portion 5A, and the conductive portion 4A is fixed to a member (insulating portion 5A) constituting the operating pin 8A. That is, the operation pin 8A includes a conductive portion 4A and an insulating portion 5A.
  • the conductive portion 4A includes a first portion 41A, a second portion 42A, and a third portion 43A.
  • the first part 41A and the second part 42A are rod-shaped long in the vertical direction.
  • the first portion 41A faces the opened first electric circuit portion 21.
  • the second portion 42A faces the opened second electric circuit portion 22.
  • the third portion 43A has a long rod shape on the left and right.
  • the third portion 43A electrically connects the first portion 41A and the second portion 42A.
  • the dimensions (widths) of the first portion 41A to the third portion 43A in the front-rear direction are equal to each other.
  • the conductive portion 4A is formed in a U-shape (square bracket shape) in front view by the first portion 41A to the third portion 43A.
  • the insulating portion 5A (member constituting the operation pin 8A) has a shape corresponding to the conductive portion 4A and has a fitting recess 52A into which the conductive portion 4A is fitted.
  • the breaking device 1A of this modified example also has the conductive portion 4A and the insulating portion 5A, so that the generation of an arc can be suppressed.
  • the conductive portion 4A can be manufactured by bending the wire rod, and the manufacturing procedure can be simplified.
  • the housing 9B includes a first body 92B, a first cover 93B, a cap 94B, a second body 98B, and a second cover 99B.
  • the housing 9B has a space (internal space) inside.
  • the first body 92B has a box shape having a through hole 920B having a circular cross section and a recess 921B having an open upper surface and a cylindrical inner peripheral surface.
  • the first cover 93B is cylindrical and has a recess 930B having a cylindrical inner peripheral surface with an open lower surface.
  • the first cover 93B is provided with a cylindrical accommodating wall 932B at the upper end thereof for accommodating the gas generator 70 of the drive mechanism 7.
  • the first cover 93B is fitted into the first body 92B so that its outer peripheral surface faces the inner peripheral surface of the recess 921B of the first body 92B.
  • the operation pin 8B is arranged in the internal space of the recess 930B of the first cover 93B and in the through hole 920B of the first body 92B.
  • the cap 94B is attached to the first body 92B and the first cover 93B so as to cover the upper surface of the first body 92B and the upper surface of the first cover 93B.
  • An O-ring 62B is arranged between the first body 92B and the cap 94B.
  • the second cover 99B has a plate-shaped plate portion and a cylindrical tubular portion protruding from the lower surface of the plate portion.
  • a circular through hole 990B is formed in the plate portion.
  • the inner peripheral surface of the tubular portion has a conical pedestal shape in which the diameter increases toward the bottom.
  • the second body 98B has an internal space.
  • the internal space of the second body 98B defines a relaxation space S2 that alleviates the pressure rise in the housing 9.
  • the internal space of the second body 98B includes a columnar portion connected to the internal space of the second cover 99B and a bowl-shaped portion.
  • a base portion protruding from the bottom surface is provided in the internal space of the second body 98B.
  • the base portion is a member for preventing further movement of the operation pin 8B when the operation pin 8B (actually, the third electric circuit portion 23) that moves downward by the drive mechanism 7 collides with the operation pin 8B.
  • the height of the base portion is set so that the insulating portion 5B of the operation pin 8B after movement stays between the opened first electric circuit portion 21B and the second electric circuit portion 22B.
  • An O-ring 63B is arranged between the second body 98B and the second cover 99B.
  • the conductive member 2B is arranged so as to be sandwiched between the first body 92B and the second cover 99B. As shown in FIG. 9, the conductive member 2B is a third electric circuit portion (separation portion) that connects the plate-shaped first electric circuit portion 21B and the second electric circuit portion 22B, and the first electric circuit portion 21B and the second electric circuit portion 22B, respectively. ) 23B and.
  • the width of the third electric circuit portion 23B is smaller than the width of the first electric circuit portion 21B and the width of the second electric circuit portion 22B.
  • a partially cylindrical groove 24B is formed between the first electric circuit portion 21B and the third electric circuit portion 23B, and between the second electric circuit portion 22B and the third electric circuit portion 23B.
  • the gas generator 70 is arranged in the space surrounded by the accommodation wall 932B of the first cover 93B.
  • An O-ring 64B is arranged between the gas generator 70 and the first cover 93B.
  • the blocking device 1B includes a conductive portion 4B and an insulating portion 5B.
  • the conductive portion 4B and the insulating portion 5B are a part of the operation pin 8B.
  • the main body of the operating pin 8B is composed of an insulating portion 5B, and the conductive portion 4B is fixed to a member (insulating portion 5B) constituting the operating pin 8B. That is, as shown in FIG. 9, the operation pin 8B includes a conductive portion 4B and an insulating portion 5B.
  • the conductive portion 4B includes a first portion 41B, a second portion 42B, and a third portion 43B.
  • the first portion 41B faces the opened first electric circuit portion 21B.
  • the second portion 42B faces the opened second electric circuit portion 22B.
  • the third portion 43B electrically connects the first portion 41B and the second portion 42B.
  • the first part 41B and the second part 42B are rod-shaped long in the vertical direction.
  • the third portion 43B has a shape in which a long wire rod is alternately bent in opposite directions a plurality of times, and has a plurality of bent portions. That is, the third portion 43B has a current path longer than the linear distance connecting both ends of the third portion 43B. As a result, the electrical resistance of the third portion 43B becomes larger than that in the case where the third portion 43B is linear (see FIGS. 6, 7, etc.). Further, by appropriately setting the length between the bent portions of the third portion 43B, it is possible to appropriately determine the electrical resistance of the third portion 43B. Further, since the third portion 43B has a plurality of bent portions, the third portion 43B having a large electric resistance can be accommodated in the operation pin 8B. As a result, the breaking performance can be improved and the breaking device 1B can be downsized.
  • the insulating portion 5B (member constituting the operation pin 8B) has a columnar shape.
  • An annular groove 51B along the circumferential direction of the insulating portion 5B is formed on the outer edge of the upper end of the insulating portion 5B.
  • the O-ring 65B is fitted in the groove 51B.
  • a fitting recess 52B is formed at the lower end of the insulating portion 5B.
  • the conductive portion 4B is fitted into the fitting recess 52B.
  • the operation pin 8B is arranged in the housing 9B so that the conductive portion 4B faces the third electric circuit portion 23B of the conductive member 2B.
  • the breaking device 1B of this modification also includes the conductive portion 4B and the insulating portion 5B, so that the arc when the first electric circuit portion 21B and the second electric circuit portion 22B are separated from each other can be generated. It is possible to suppress the occurrence. As a result, the blocking device 1B can improve the blocking performance and reduce the size of the blocking device 1B. Further, the conductive portion 4B can be manufactured by bending a wire rod or punching a metal plate, and the manufacturing procedure can be simplified. Further, the number of times of bending and the total length of the conductive portion 4B can be appropriately set, and the degree of freedom in design is increased.
  • the blocking device 1C includes a conductive portion 4C and an insulating portion 5C.
  • the insulating portion 5C is a part of the operating pin 8C.
  • the main body of the operation pin 8C is composed of the insulating portion 5C.
  • the blocking device 1C includes a holding cap (holding portion) 80C for holding the conductive portion 4C.
  • the conductive portion 4C and the holding cap 80C are a part of the operation pin 8C. That is, as shown in FIG. 10, the operation pin 8C includes a conductive portion 4C and an insulating portion 5C.
  • the holding cap 80C and the conductive portion 4C may be regarded as separate members from the operating pin 8C.
  • the conductive portion 4C includes a first portion 41C, a second portion 42C, and a third portion 43C.
  • the first part 41C and the second part 42C are vertically long cylinders.
  • the first portion 41C faces the opened first electric circuit portion 21B.
  • the second portion 42C faces the opened second electric circuit portion 22B.
  • the third part 43C electrically connects the first part 41C and the second part 42C.
  • the third portion 43C has a spiral portion. More specifically, the third portion 43C includes a linear portion connected to the lower end of the first portion 41C, a spiral portion spirally extending from the end of the linear portion, and a second portion extending from the upper end of the spiral portion. It has an L-shaped portion connected to the lower end of 42C. That is, the third portion 43C has a current path longer than the linear distance connecting both ends of the third portion 43C.
  • the insulating portion 5C (member constituting the operation pin 8C) has a shape corresponding to the conductive portion 4C and has a fitting recess 52C into which the conductive portion 4C is fitted.
  • the fitting recess 52C includes a recess having a columnar internal space for accommodating the third portion 43C of the conductive portion 4C, and a first portion 41C and a second portion 42C extending left and right from the opening end of the recess. It has a groove for accommodating it.
  • the conductive portion 4C is housed in the internal space of the insulating portion 5C.
  • the holding cap (holding portion) 80C holds the conductive portion 4C.
  • the holding cap 80C is electrically insulating.
  • the holding cap 80C is housed in the internal space of the insulating portion 5C, and the conductive portion 4C is arranged in the insulating portion 5C.
  • the breaking device 1C of this modified example also has the conductive portion 4C and the insulating portion 5C, so that the generation of an arc can be suppressed.
  • the breaking device 1C can improve the breaking performance and reduce the size of the breaking device 1C.
  • the conductive portion 4C can be formed by bending the wire rod, and the manufacturing procedure can be simplified.
  • FIG. 11 is a cross-sectional view of the main part of the blocking device 1D as viewed from above.
  • FIG. 12 is a cross-sectional view of the main part of the blocking device 1D as viewed from the side, and shows a state before the operation of the operation pin 8D.
  • FIG. 13 is a perspective view of the operation pin 8D.
  • FIG. 14 is a cross-sectional view of the main part of the blocking device 1D as viewed from the side, showing the state of the operating pin 8D after operation.
  • arrows representing up and down, left and right, and front and back are shown in FIGS. 11, 12, and 14, the arrows are shown for the sake of explanation, and are intended to limit the direction in which the blocking device 1D is used. Absent.
  • the blocking device 1D of this modification includes a housing 9D, a drive mechanism 7D including a gas generator 70D, a conductive portion 4D, an insulating portion 5D, an operation pin 8D, a first fixed terminal 210D as a first electric circuit portion 21D, and a second It includes a second fixed terminal 220D as an electric circuit portion 22D, a movable contact 230D as a third electric circuit portion (separation portion) 23D, and a pressure contact spring 14D.
  • the conductive portion 4D and the insulating portion 5D are a part of the operation pin 8D.
  • each of the first fixed terminal 210D and the second fixed terminal 220D is formed in the shape of a rectangular plate long in the left-right direction.
  • Each of the first fixed terminal 210D and the second fixed terminal 220D is formed of a conductive material such as copper.
  • the first fixed terminal 210D and the second fixed terminal 220D are arranged so as to be arranged in the left-right direction.
  • the first fixed terminal 210D has a first fixed contact 11D on the front surface of its tip (right end).
  • the second fixed terminal 220D has a second fixed contact 13D on the front surface of its tip (left end).
  • the movable contact 230D is made of a conductive material such as copper.
  • the movable contact 230D is formed in a plate shape that is long in the left-right direction.
  • the movable contact 230D has a first movable contact 121D on the rear surface of the first end (left end) in the longitudinal direction and a second movable contact 122D on the rear surface of the second end (right end).
  • the first fixed terminal 210D, the second fixed terminal 220D and the movable contact 230D are arranged so that the first movable contact 121D faces the first fixed contact 11D and the second movable contact 122D faces the second fixed contact 13D. Have been placed.
  • the first fixed terminal 210D and the second fixed terminal 220D are electrically connected to an electric circuit outside the breaking device 1D.
  • the pressure contact spring 14D is, for example, a compression coil spring.
  • the pressure contact spring 14D applies a spring force to the movable contact 230D so that the movable contact 230D faces the first fixed terminal 210D and the second fixed terminal 220D. That is, the pressure spring 14D applies a spring force to the movable contact 230D in the direction in which the first movable contact 121D is connected to the first fixed contact 11D and the second movable contact 122D is connected to the second fixed contact 13D. ing.
  • the gas generator 70D is housed in the case 76D.
  • the case 76D is located above the movable contact 230D.
  • the case 76D is formed in a cylindrical shape.
  • An opening for exposing the two pin electrodes 72 of the gas generator 70D is formed on the upper surface of the case 76D.
  • a hole 761D for discharging the gas generated by the gas generator 70D is formed inside the case 76D.
  • a space (pressurizing chamber 75D) is formed below the gas generator 70D.
  • the operation pin 8D is arranged between the case 76D (gas generator 70D) and the movable contact 230D in the vertical direction.
  • the operation pin 8D has a conductive portion 4D and an insulating portion 5D.
  • the insulating portion 5D is a rectangular plate-shaped portion having a length in the left-right direction and a thickness in the vertical direction, and a so-called wedge-shaped portion (a trapezoidal portion in which a right triangle is connected to the lower side of a rectangle in cross-sectional shape). ) And.
  • the lower end of the operation pin 8D is located between the movable contact 230D and the first fixed terminal 210D (second fixed terminal 220D) in the front-rear direction.
  • the conductive portion 4D is provided with a V-shaped cross section so as to straddle the front surface and the rear surface of the insulating portion 5D at the lower end of the insulating portion 5D.
  • the conductive portion 4D is provided near the left end and near the right end at the lower end of the insulating portion 5D. That is, the conductive portion 4D is inserted between the first fixed contact 11D and the first movable contact 121D and between the second fixed contact 13D and the second movable contact 122D when the operating pin 8D moves. It is provided in.
  • the housing 9D is formed in a rectangular box shape having an internal space.
  • the first fixed contact 11D, the second fixed contact 13D, the movable contact 230D, the pressure contact spring 14D, the case 76D, and the operation pin 8D are housed in the internal space of the housing 9D.
  • the operation pin 8D here moves the separation unit 23D relative to at least one (here, both) of the first electric path portion 21D and the second electric path portion 22D, thereby causing the first electric path.
  • the portion 21D and the second electric circuit portion 22D are separated from each other.
  • the movable contact 230D (separation) is placed between the opened first fixed terminal 210D (first electric circuit portion 21D) and the second fixed terminal 220D (second electric circuit portion 22D).
  • the conductive portion 4D enters through the portion 23D) and conducts the first electric circuit portion 21D and the second electric circuit portion 22D.
  • the conductive portion 4D is separated from at least one of the first electric circuit portion 21D and the second electric circuit portion 22D, and then between the first electric circuit portion 21D and the separation portion 23D.
  • the insulating portion 5D is inserted between the second electric circuit portion 22D and the separating portion 23D.
  • the first electric circuit portion 21D and the second electric circuit portion 22D are insulated by the insulating portion 5D (see FIG. 14).
  • the operation pin 8D includes the conductive portion 4D and the insulating portion 5D, so that the first electric circuit portion 21D and the second electric circuit portion 22D are separated from each other. It is possible to suppress the generation of an arc at that time.
  • the shutoff device 1D may include two sets of a gas generator 70D and an operation pin 8D.
  • one of the two sets of gas generator 70D and operation pin 8D drives the first movable contact 121D.
  • the other set of gas generators 70D and operating pins 8D drive the second movable contact 122D.
  • the number of pairs of the fixed contact and the movable contact may be one set or three or more sets.
  • the operation pin 8D may move the separation unit 23D relative to at least one of the first electric path portion 21D and the second electric path portion 22D, and may be changed to or in addition to the separation portion 23D.
  • the first electric circuit portion 21D and / or the second electric circuit portion 22D may be moved.
  • first fixed terminal 210D and the first fixed contact 11D may be connected to each other by attaching the first fixed contact 11D, which is different from the first fixed terminal 210D, to the first fixed terminal 210D.
  • the first fixed contact 11D may be configured as a member integrated with the first fixed terminal 210D.
  • the movable contact 230D and the first movable contact 121D may have a first movable contact 121D that is separate from the movable contact 230D and may be attached to the movable contact 230D and coupled to each other.
  • the movable contact 121D may be configured as a member integrated with the movable contact 230D.
  • the relationship between the second fixed terminal 220D and the second fixed contact 13D and the relationship between the movable contact 230D and the second movable contact 122D are the same.
  • the operation pin 8E of the breaking device 1E includes a conductive portion 4E and an insulating portion 5E.
  • the conductive portion 4E and the insulating portion 5E are a part of the operation pin 8E.
  • the main body of the operating pin 8E is composed of an insulating portion 5E, and the conductive portion 4E is fixed to a member (insulating portion 5E) constituting the operating pin 8E. That is, the operation pin 8E of this modification has a conductive portion 4E and an insulating portion 5E.
  • the insulating portion 5E of this modified example has a rectangular plate-shaped portion and a wedge-shaped portion, similarly to the operation pin 8D of the blocking device 1D of the modified example 4.
  • the conductive portion 4E is provided at the lower end of the insulating portion 5E in a V-shaped cross section.
  • the blocking device 1E of this modified example includes a plate-shaped conductive member 2E as shown in FIG.
  • the conductive member 2E includes a first electric circuit portion 21E, a second electric circuit portion 22E, and a third electric circuit portion (separation portion) 23E.
  • the first electric circuit portion 21E and the second electric circuit portion 22E are connected to each other via the third electric circuit portion 23E.
  • the first electric circuit portion 21E, the third electric circuit portion 23E, and the second electric circuit portion 22E are arranged in this order from right to left in FIG.
  • the conductive member 2E has a groove 24E between the first electric circuit portion 21E and the third electric circuit portion 23E, and between the second electric circuit portion 22E and the third electric circuit portion 23E.
  • Each groove 24E is formed on the first surface F1 of the first surface F1 (see FIG. 16) of the conductive member 2E and the second surface F2 (see FIG. 16) opposite to the first surface F1. It is formed.
  • the first surface F1 is a surface facing the operation pin 8E.
  • the depth direction of each groove 24E is along the thickness direction of the conductive member 2E.
  • the length direction of each groove 24E is along the width direction of the conductive member 2E.
  • Each groove 24E has a V-shaped cross section.
  • the groove 24E between the first electric path portion 21E and the third electric path portion 23E is also referred to as a groove 241E
  • the groove 24E between the second electric path portion 22E and the third electric path portion 23E is also referred to as a groove 242E.
  • the operation pin 8E is arranged so that the tip of the wedge-shaped portion faces one groove 24E (241E) of the conductive member 2E and the rectangular plate-shaped portion faces the gas generator 70 (see FIG. 1). Has been done.
  • the operation pin 8E when gas is generated in the gas generator 70, the operation pin 8E is pushed by the pressure of the gas and moves toward the conductive member 2E. The tip of the operation pin 8E is inserted into the groove 241E as it moves, and the conductive member 2E is broken in the groove 241E. As a result, the third electric circuit portion 23E is separated from the first electric circuit portion 21E, and the first electric circuit portion 21E and the second electric circuit portion 22E are separated from each other.
  • the conductive portion 4E is provided at the tip of the operation pin 8E, when the conductive member 2E is broken in the groove 241E, the first electric circuit portion 21E and the third electric circuit portion 23E form the conductive portion 4E. Conducts through (see FIG. 17). That is, the conductive portion 4E is connected in series between the first electric circuit portion 21E and the third electric circuit portion 23E, and the current flows from the first electric circuit portion 21E through the conductive portion 4E to the third electric circuit portion 23E. Flow to. Therefore, the electric resistance between the first terminal 211E and the second terminal 221E is increased by at least the electric resistance of the conductive portion 4E as compared with before the operation pin 8E moves.
  • the electrical resistance between the first terminal 211E and the second terminal 221E is higher when the first electric circuit portion 21E and the second electric circuit portion 22E are conducted via the conductive portion 4E (see FIG. 17).
  • the first electric circuit portion 21E and the second electric circuit portion 22E are larger than before being separated by the movement of the operation pin 8E (see FIG. 16).
  • the conductive member 2E is broken in the groove 242E (the groove 24E to which the operation pin 8E is not inserted) between the second electric path portion 22E and the third electric path portion 23E.
  • the conductive portion 4E separates from the first electric circuit portion 21E, and the insulating portion 5E is separated between the opened first electric circuit portion 21E and the second electric circuit portion 22E. Move to.
  • the first electric circuit portion 21E and the second electric circuit portion 22E are insulated by the insulating portion 5E (see FIG. 18).
  • the breaking device 1E of this modified example also includes the conductive portion 4E and the insulating portion 5E, so that the arc when the first electric circuit portion 21E and the second electric circuit portion 22E are separated from each other can be generated. It is possible to suppress the occurrence.
  • FIG. 19 is a cross-sectional view showing a main part of the blocking device 1F.
  • the same components as those of the blocking device 1 of the basic example are designated by the same reference numerals, and description thereof will be omitted as appropriate.
  • the operation pin 8F of the breaking device 1F of this modified example has an arc extinguishing member 30 in addition to the conductive portion 4F and the insulating portion 5F.
  • the insulating portion 5F is a columnar shape that is long in the vertical direction, and here constitutes the main body of the operating pin 8F.
  • the upper end of the insulating portion 5F faces the gas generator 70 (see FIG. 1).
  • the arc extinguishing member 30 constitutes at least a part of the operation pin 8F. More specifically, the arc extinguishing member 30 constitutes at least a part of the outer peripheral surface of the operation pin 8F. In other words, the outer peripheral surface of the operation pin 8F includes the outer surface of the arc extinguishing member 30.
  • the conductive portion 4F is located at the tip (lower end) of the operation pin 8F.
  • the conductive portion 4F has a disk shape here. Before the operation pin 8F is driven by the gas generator 70, the conductive portion 4F is in contact with the third electric circuit portion 23 of the conductive member 2.
  • the conductive portion 4F, the arc extinguishing member 30, and the insulating portion 5F are arranged in this order from the tip side (lower side) of the operation pin 8F. That is, the arc extinguishing member 30 is located between the conductive portion 4F and the insulating portion 5F.
  • the arc extinguishing member 30 is embedded in, for example, a resin molding member which is the main configuration of the operation pin 8F.
  • the resin molding member includes the insulating portion 5F.
  • the arc extinguishing member 30 may be attached to the resin molding member which is the main configuration of the operation pin 8F.
  • the insulating portion 5F is located on the side opposite to the conductive portion 4F side with respect to the arc extinguishing member 30, and has higher electrical insulation than the arc extinguishing member 30.
  • the arc extinguishing member 30 has an arc extinguishing action.
  • the arc-extinguishing member 30 is, for example, a member formed into a solid or semi-solid state by mixing an epoxy resin and a curing agent with silica sand and curing the epoxy resin. That is, the arc extinguishing member 30 contains silica sand (silica). In the arc extinguishing member 30, silica sand has an arc extinguishing action.
  • the third electric circuit portion (separation portion) 23 is pushed by the operation pin 8F.
  • the conductive member 2 is broken in the groove 24 between the first electric circuit portion 21 and the third electric circuit portion 23 and in the groove 24 between the second electric circuit portion 22 and the third electric circuit portion 23.
  • the conductive portion 4F enters between the opened first electric circuit portion 21 and the second electric circuit portion 22. Therefore, the current flowing through the third electric circuit portion 23 will flow through the conductive portion 4F.
  • the arc extinguishing member 30 moves between the opened first electric path portion 21 and the second electric path portion 22.
  • the silica sand contained in the arc extinguishing member 30
  • the silica sand is exposed to the heat of the arc.
  • the silica sand then absorbs the heat of the arc and melts. That is, the arc extinguishing member 30 has an action of cooling the arc in contact with the arc extinguishing member 30.
  • the arc voltage rises and the arc extinguishing is promoted.
  • silica sand may re-solidify after melting.
  • the product produced by resolidification has an electrical insulating property because it contains silica, and the arc voltage rises when the arc comes into contact with the product.
  • the product can ensure the electrical insulation between the first electric circuit portion 21 and the second electric circuit portion 22 after the arc is cut off.
  • the insulating portion 5F moves between the opened first electric circuit portion 21 and the second electric circuit portion 22.
  • the space between the first electric circuit portion 21 and the second electric circuit portion 22 is insulated by the insulating portion 5F.
  • the breaking device 1F of this modified example also includes the conductive portion 4F and the insulating portion 5F, so that the arc when the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other can be generated. It is possible to suppress the occurrence. Further, in the blocking device 1F of the present modification, since the operation pin 8F includes the arc extinguishing member 30, it is possible to promote the extinguishing of the generated arc.
  • the arc extinguishing member 30 is not limited to the configuration using silica sand.
  • the arc extinguishing member 30 for example, polyamide (nylon) such as SiC, SiO 2 , alumina, PA6, PA46, PA66, or a material obtained by mixing magnesium hydroxide or magnesium borate with the resin of this polyamide can be used. ..
  • the arc extinguishing member 30 is decomposed by the heat of the arc and the heat generated in the conductive portion 4F to generate an arc extinguishing gas.
  • the arc-extinguishing gas is a gas having an arc-extinguishing action, and contains, for example, at least one of hydrogen, water, carbon dioxide, nitrogen, and the like. The arc-extinguishing gas raises the arc voltage and promotes the extinguishing of the arc.
  • a hydrogen storage alloy may be used as the arc extinguishing member 30.
  • the hydrogen storage alloy used as the arc extinguishing member 30 is heated by the arc and the conductive portion 4F, hydrogen as an arc extinguishing gas is generated.
  • the arc-extinguishing gas raises the arc voltage and promotes the extinguishing of the arc.
  • the arc extinguishing member 30 for example, a member containing silicon or silicon carbide (SiC) may be used.
  • SiC silicon or silicon carbide
  • the silicon or silicon carbide contained in the arc extinguishing member 30 absorbs the heat of the arc and the conductive portion 4F and melts, thereby cooling the arc, so that the arc voltage rises and the arc extinguishing is promoted. ..
  • the arc extinguishing member 30 may contain ceramic. Since ceramic has higher arc resistance than materials such as resin, it is possible to improve the arc resistance of the arc extinguishing member 30 by using ceramic.
  • FIG. 20 is a cross-sectional view showing a main part of the blocking device 1G.
  • the same components as those of the blocking device 1 of the basic example are designated by the same reference numerals, and the description thereof will be omitted as appropriate.
  • the operation pin 8G of the blocking device 1G of this modified example has a conductive portion 4G and an insulating portion 5G.
  • the insulating portion 5G is a columnar shape that is long in the vertical direction. The upper end of the insulating portion 5G faces the gas generator 70 (see FIG. 1).
  • the conductive portion 4G is located at the lower end of the operation pin 8G.
  • the conductive portion 4G has a disk shape here.
  • the conductive part 4G of this modification contains a hydrogen storage alloy.
  • the hydrogen storage alloy When heated by an arc, the hydrogen storage alloy produces hydrogen as an arc extinguishing gas.
  • the arc-extinguishing gas raises the arc voltage and promotes the extinguishing of the arc. That is, the operation pin 8G includes an arc extinguishing member 30 having an arc extinguishing action.
  • the hydrogen storage alloy has conductivity, but has a higher resistivity than the material of the conductive member 2.
  • the material and shape of the conductive portion 4G are selected so that the electrical resistance of the conductive portion 4G is larger than the electrical resistance of the third electric circuit portion (separation portion) 23 of the conductive member 2.
  • the breaking device 1G of this modified example also includes the conductive portion 4G and the insulating portion 5G, so that the arc when the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other can be generated. It is possible to suppress the occurrence. Further, in the blocking device 1G of the present modification, since the conductive portion 4G functions as the arc extinguishing member 30, it is possible to promote the extinguishing of the generated arc.
  • FIG. 21 is a cross-sectional view showing a main part of the blocking device 1H.
  • the same components as those of the blocking device 1G of the modification 7 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.
  • the operation pin 8H of the blocking device 1H of this modified example has a plurality of conductive portions 4H and an insulating portion 5H.
  • the insulating portion 5H is a columnar shape that is long in the vertical direction.
  • the upper end of the insulating portion 5H faces the gas generator 70 (see FIG. 1), and the lower end faces the conductive member 2.
  • Each of the plurality of conductive portions 4H is made of a metal plate. More specifically, each of the plurality of conductive portions 4H is made of a magnetic material such as iron. Each of the plurality of conductive portions 4H has a frame shape. The shape of each of the plurality of conductive portions 4G is annular here. The plurality of conductive portions 4H project from the outer peripheral surface of the insulating portion 5H. The plurality of conductive portions 4H are arranged in the moving direction of the operation pin 8H. The electrical resistances of the plurality of conductive portions 4H may be the same or different from each other.
  • the plurality of conductive portions 4H function as an arc grid.
  • the third electric circuit portion (separation portion) 23 is separated from the first electric circuit portion 21 and the second electric circuit portion 22 by being pushed by the operation pin 8H, between the first electric circuit portion 21 and the third electric circuit portion 23, Alternatively, an arc may be generated between the second electric circuit portion 22 and the third electric circuit portion 23.
  • the generated arc is pushed by the operation pin 8H, and as the third electric circuit portion 23 moves downward, the generated arc is between the first electric circuit portion 21 and the third electric circuit portion 23, and between the second electric circuit portion 22 and the third electric circuit portion 23. It will pass through the conductive portion 4H (metal plate) between and.
  • the operation pin 8H includes an arc-extinguishing member 30 having an arc-extinguishing action.
  • a plurality of arc extinguishing members 30 functioning as an arc grid may be provided at the lower end of the insulating portion 5H.
  • the shape of the plurality of arc-extinguishing members 30 provided at the lower ends of the insulating portion 5H is, for example, a rectangular plate. It is preferable that the plurality of arc-extinguishing members 30 provided at the lower ends are arranged in the left-right direction in FIG.
  • the operation pin 8H includes the conductive portion 4H and the insulating portion 5H, so that the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other. It is possible to suppress the generation of an arc at that time. Further, even in the blocking device 1H of the present modification, since the conductive portion 4H functions as the arc extinguishing member 30, it is possible to promote the extinguishing of the generated arc.
  • the housing 9I has a space (internal space) inside. As shown in FIG. 22, the housing 9I has a first accommodating portion 91I and a second accommodating portion 97I.
  • the first accommodating portion 91I has an accommodating space for accommodating a part of the operation pin 8I before movement.
  • the second accommodating portion 97I has a space (relaxation space S2) inside thereof.
  • the first accommodating portion 91I includes a first body 92I, a first cover 93I, and a cap 94I.
  • the first body 92I has a circular cross section and has a columnar shape having through holes 920I extending in the vertical direction, that is, a cylindrical shape. On the lower surface of the first body 92I, recesses into which the conductive member 2 is fitted are formed on the left and right sides of the through hole 920I.
  • the first cover 93I has a rectangular box shape.
  • the first cover 93I has a through hole 930I having a circular cross section and extending in the vertical direction in the center thereof.
  • the inner diameter of the through hole 930I is equal to the outer diameter of the first body 92I.
  • the first body 92I is arranged in the through hole 930I. Further, recesses for passing the conductive member 2 are formed at the left and right positions on the lower surface of the first cover 93I.
  • the cap 94I is put on the upper surfaces of the first body 92I and the first cover 93I.
  • the cap 94I includes a base portion 95I and a covering portion 96I.
  • the base portion 95I and the covering portion 96I may be integrated or separate.
  • the base 95I has a through hole 950I including a recess 951I and a storage recess 952I, and a recess 953I in which the O-ring 62 is arranged.
  • the recess 951I is cylindrical and is connected to the through hole 920I of the first body 92I with the base 95I attached to the first body 92I.
  • the operation pin 8I is arranged in the space composed of the through hole 920I and the recess 951I.
  • the gas generator 70 is arranged in the space in the accommodation recess 952I.
  • the covering portion 96I is put on the base portion 95I so as to cover the upper surface of the base portion 95I. Since the shapes of the base portion 95I and the cover portion 96I are the same as those of the base portion 95 and the cover portion 96 of the blocking device 1 of the basic example, detailed description thereof will be omitted.
  • the second accommodating portion 97I includes a second body 98I and a second cover 99I.
  • the second body 98I has a rectangular box shape.
  • the second body 98I has a recess 981I on its upper surface (the surface closer to the operation pin 8I).
  • the recess 981I has a first recess 982I having a cylindrical inner surface and a second recess 983I recessed downward from the bottom surface (lower surface) of the first recess 982I.
  • the boundary between the side surface and the bottom surface of the first recess 982I is curved.
  • the second recess 983I has a cylindrical inner surface having an inner diameter smaller than the inner diameter of the first recess 982I, and the boundary portion between the inner bottom surface and the inner surface thereof is curved.
  • the second cover 99I covers the second body 98I from above.
  • the second cover 99I has a cylindrical shape having a cylindrical outer surface.
  • the second cover 99I has a through hole 990I having a circular cross section in the center thereof.
  • the outer shape of the second cover 99I is a shape that fits into the first recess 982I of the second body 98I.
  • the bottom surface of the second cover 99I has a conical pedestal shape in which one end is connected to the through hole 990I and is separated from the through hole 990I as it goes downward.
  • the relaxation space S2 is formed so as to be surrounded by the second recess 983I of the second body 98I and the bottom surface of the second cover 99I.
  • the conductive member 2 is arranged between the first body 92I and the second cover 99I.
  • the third electric circuit portion 23 and the boundary portion 240 are housed inside the housing 9I.
  • the conductive member 2 is arranged so that the third electric circuit portion 23 faces the lower surface of the operation pin 8I. Further, in the conductive member 2, the first terminal 211 of the first electric circuit portion 21 and the second terminal 221 of the second electric circuit portion 22 are exposed to the outside of the housing 9.
  • the blocking device 1I includes an insulating portion 5I and an operating pin I including a plurality of conductive portions.
  • the insulating portion 5I and the plurality of conductive portions are a part of the operating pin 8I. That is, the operation pin 8I includes an insulating portion 5I and a plurality of conductive portions.
  • the operation pin 8I is arranged between the gas generator 70 and the third electric circuit portion (separation portion) 23.
  • the insulating part 5I has electrical insulation.
  • the insulating portion 5I contains, for example, a resin as a material.
  • the insulating portion 5I (member constituting the operation pin 8I) is a long columnar shape in the vertical direction.
  • the diameter of the insulating portion 5I is substantially equal to the diameter of the through hole 920I and the diameter of the through hole 990I.
  • the diameter of the insulating portion 5I is smaller than the outer diameter of the groove 24 of the conductive member 2 and larger than the inner diameter of the groove 24.
  • the diameter of the insulating portion 5I may be substantially equal to the diameter outside the groove 24.
  • the insulating portion 5I is arranged in the housing 9I so that the first surface (upper surface) in the height direction faces the gas generator 70 and the second surface (lower surface) faces the conductive member 2.
  • the insulating portion 5I is arranged in the housing 9I so that the first end (upper end) is located in the recess 951I and the second end (lower end) is located in the through hole 920I.
  • a ring-shaped groove 51I along the circumferential direction of the insulating portion 5I is formed on the outer edge of the upper end of the insulating portion 5I (member constituting the operation pin 8I).
  • the O-ring 65 is fitted into the groove 51I.
  • the operating pin 8I is held by the housing 9I inside the recess 951 due to the frictional force between the inner surface of the groove 51I and the inner surface of the recess 951I and the O-ring 65.
  • the plurality of conductive portions include at least the first conductive portion 401 (conductive portion 4I) and the second conductive portion 402.
  • the first conductive portion 401 and the second conductive portion 402 are aligned in the moving direction (vertical direction) in which the operation pin 8I moves. Before the operation pin 8I is moved, the first conductive portion 401 is closer to the conductive member 2 than the second conductive portion 402.
  • the plurality of conductive portions further include a third conductive portion 403, a fourth conductive portion 404, and a fifth conductive portion 405.
  • the first conductive portion 401 to the fifth conductive portion 405 are arranged in this order from the side closer to the conductive member 2 (from the lower side) in the moving direction of the operation pin 8I.
  • Each of the first conductive portion 401 to the fifth conductive portion 405 is a long columnar shape (pin shape) on the left and right.
  • the length (dimension in the left-right direction) of each of the first conductive portion 401 to the fifth conductive portion 405 is substantially equal to the diameter of the insulating portion 5I.
  • Each of the first conductive portion 401 to the fifth conductive portion 405 faces the first portion (the rightmost end surface in FIG. 22) facing the separated first electric circuit portion 21 and the separated second electric circuit portion 22. It has a second portion (the leftmost end face in FIG. 22) and a third portion that connects the first portion and the second portion.
  • a plurality of through holes into which a plurality of conductive portions are inserted are penetrated to the left and right in the lower portion of the insulating portion 5I (member constituting the operation pin 8I). That is, the insulating portion 5I is formed with first through holes 501 to fifth through holes 505 into which the first conductive portions 401 to 405 are inserted, respectively. The lower end of the first through hole 501 is cut out, and the inner surface of the first through hole 501 is connected to the lower surface of the insulating portion 5I. In other words, the first through hole 501 is a recess formed on the lower surface of the insulating portion 5I.
  • a part of the insulating portion 5I is interposed between the first conductive portion 401 and the second conductive portion 402. That is, the operation pin 8I includes an intervening portion 53 that is located between the first conductive portion 401 and the second conductive portion 402 and insulates between the first conductive portion 401 and the second conductive portion 402.
  • the operation pin 8I of the blocking device 1I of this modification the second conductive portion 402 and the third conductive portion 403, the third conductive portion 403 and the fourth conductive portion 404, and the fourth conductive portion
  • a part of the insulating portion 5I is also interposed between the 404 and the fifth conductive portion 405.
  • the distance between the first conductive portion 401 and the second conductive portion 402 in the moving direction of the operating pin 8I is equal to or less than the thickness of the conductive member 2 (the dimension of the conductive member 2 in the moving direction of the operating pin 8I).
  • the distance between the first conductive portion 401 and the second conductive portion 402 in the moving direction of the operation pin 8I is smaller than the thickness of the conductive member 2 here.
  • the materials and shapes of the first conductive portion 401 to the fifth conductive portion 405 are selected so that, for example, the electrical resistance of the conductive portion at the operating pin 8I gradually increases in the moving direction of the operating pin 8I. That is, as for the material and shape of the first conductive portion 401 to the fifth conductive portion 405, for example, the electric resistance of the first conductive portion 401 is equal to or higher than the electric resistance of the third electric path portion 23, and the electric resistance of the second conductive portion 402 is The electric resistance of the first conductive part 401 or more, the electric resistance of the third conductive part 403 is equal to or higher than the electric resistance of the second conductive part 402, the electric resistance of the fourth conductive part 404 is equal to or higher than the electric resistance of the third conductive part 403, the fifth. It is selected so that the electric resistance of the conductive portion 405 is equal to or higher than the electric resistance of the fourth conductive portion 404.
  • the electrical resistance of the first conductive portion 401 is the first electric circuit portion 21 in the first conductive portion 401 when the first conductive portion 401 is located between the first electric circuit portion 21 and the second electric circuit portion 22. It is an electric resistance between the portion facing the second electric circuit portion 22 and the portion facing the second electric circuit portion 22. The same applies to the electrical resistance of the second conductive portion 402 to the fifth conductive portion 405.
  • the electric resistances of the third electric circuit portion 23 and the first conductive portion 401 to the fifth conductive portion 405 are different from each other.
  • the materials and shapes of the first conductive portion 401 to the fifth conductive portion 405 are the third electric circuit portion 23, the first conductive portion 401, the second conductive portion 402, the third conductive portion 403, the fourth conductive portion 404, and the first.
  • the 5 conductive portions 405 are selected so that the electrical resistance increases in this order.
  • the material of the first conductive portion 401 is a low resistance conductor.
  • the material of the second conductive portion 402 is a conductor having a relatively high resistance.
  • the material of the third conductive portion 403 is a semiconductor having low resistance (however, the resistance is higher than that of the material of the second conductive portion 402).
  • the material of the fourth conductive portion 404 is a high resistance semiconductor.
  • the material of the fifth conductive portion 405 is a semiconductor that is close to an insulator (higher resistance than the material of the fourth conductive portion 404).
  • the electrical resistance of the conductive portion that finally moves between the first electric circuit portion 21 and the second electric circuit portion 22 when the operation pin 8I moves is first determined by the first electric circuit portion. It is preferably larger than the electrical resistance of the conductive portion that moves between the 21 and the second electric circuit portion 22.
  • the conductive portion that first moves between the first electric circuit portion 21 and the second electric circuit portion 22 when the operation pin 8I moves is the conductive portion closest to the conductive member 2 before the operation pin 8I moves.
  • it is the first conductive portion 401.
  • the conductive portion that finally moves between the first electric circuit portion 21 and the second electric circuit portion 22 is the conductive portion that is farthest from the conductive member 2 before the operation pin 8I moves.
  • the materials and shapes of the first conductive portion 401 to the fifth conductive portion 405 are selected so that the heat resistance of the first conductive portion 401 to the fifth conductive portion 405 is high, the heat capacity is large, and the heat transfer property is high. It is preferable to be done.
  • the materials and shapes of the first conductive portion 401 to the fifth conductive portion 405 are selected so that, for example, the first conductive portion 401 to the fifth conductive portion 405 do not melt during the operation of the blocking device 1I.
  • the first electric path portion 21 and the second electric path portion 22 are connected to each other via the third electric path portion 23. Is electrically connected. Therefore, the conductive member 2 functions as a conducting wire, and the first electric circuit portion 21, the second electric circuit portion 22, and the third electric circuit portion 23 are electrically connected to the first terminal 211 and the second terminal 221. The current supplied from flows.
  • the heat generating element 73 When the control unit of the electric vehicle or the like energizes between the two pin electrodes 72 of the gas generator 70, the heat generating element 73 generates heat, and the heat generated by the heat generating element 73 ignites the fuel 74 and burns the fuel 74. Generates gas.
  • the gas increases the pressure of the space containing the fuel 74 in the case 71, breaks the wall (lower wall) constituting this space, and is introduced into the pressurizing chamber 75 through the broken portion to be introduced into the pressurizing chamber 75. Increase the pressure inside. Due to the pressure of the gas in the pressurizing chamber 75, a force in the direction of pushing the third electric circuit portion 23 (downward) acts on the operation pin 8I.
  • the operation pin 8I is driven against the frictional force of the O-ring 65, and the lower surface of the operation pin 8I pushes the third electric circuit portion 23.
  • the conductive member 2 has a groove in the boundary portion 240 (see FIG. 23) between the first electric circuit portion 21 and the third electric circuit portion 23. It is broken at 24 (see FIG. 23) and at the groove 24 of the boundary portion 240 between the second electric circuit portion 22 and the third electric circuit portion 23.
  • the third electric circuit portion (separation portion) 23 is separated from the first electric circuit portion 21 and the second electric circuit portion 22, and the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other.
  • the third electric circuit portion 23 separated from the first electric circuit portion 21 and the second electric circuit portion 22 is pushed by the operation pin 8 and enters the relaxation space S2 below.
  • the operation pin 8I has a first conductive portion 401 at its lower end (tip in the traveling direction). Therefore, when the operation pin 8I moves, the first electric circuit portion 21 and the second electric circuit portion 22 are separated, and then the first electric circuit portion 21 and the second electric circuit portion 22 are separated from each other. 1
  • the conductive portion 401 enters. Then, one end (right end in FIG. 25) of the first conductive portion 401 comes into contact (opposite) with the opened first electric circuit portion 21, and the other end (left end in FIG. 25) of the first conductive portion 401 is separated. Contact (opposite) with the second electric circuit portion 22. Therefore, the current flowing through the third electric circuit portion 23 will flow through the first conductive portion 401.
  • the electric resistance of the first conductive part 401 is larger than the electric resistance of the third electric circuit part 23. Therefore, the electrical resistance between the first terminal 211 and the second terminal 221 is higher when the first electric circuit portion 21 and the second electric circuit portion 22 are conducted via the conductive portion 4 (see FIG. 25). This is larger than the case where the first electric circuit portion 21 and the second electric circuit portion 22 conduct with each other via the third electric circuit portion (separation portion) 23 (see FIG. 24). In other words, the electrical resistance between the first terminal 211 and the second terminal 221 is when the first electric circuit portion 21 and the second electric circuit portion 22 conduct with each other via the first conductive portion 401 (see FIG. 25).
  • the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 is the one when the first electric circuit portion 21 and the second electric circuit portion 22 are connected via the first conductive portion 401. Is smaller than when it is connected via the third electric circuit portion 23.
  • the operation pin 8I When the operation pin 8I is further moved, the first electric circuit portion 21 and the second electric circuit which are separated before the first conductive portion 401 is separated from the separated first electric circuit portion 21 and the second electric circuit portion 22.
  • the second conductive portion 402 enters between the portion 22 and the portion 22. Then, as shown in FIG. 26, one end of the second conductive portion 402 (the right end of FIG. 26) comes into contact (opposite) with the opened first electric circuit portion 21, and the other end of the second conductive portion 402 (FIG. 26). (Left end) comes into contact with (opposites) the opened second electric circuit portion 22. Therefore, the current flowing through the first conductive portion 401 will flow through the second conductive portion 402.
  • the operation pin 8I is driven by the gas generator 70 and moves to conduct the first electric circuit portion 21 and the second electric circuit portion 22 via the first conductive portion 401, and then the first electric circuit portion.
  • the 21 and the second electric circuit portion 22 are made conductive via the second conductive portion 402.
  • the electrical resistance of the second conductive portion 402 is different from the electrical resistance of the first conductive portion 401. Therefore, the electrical resistance between the first terminal 211 and the second terminal 221 is different when the first electric circuit portion 21 and the second electric circuit portion 22 are conducted via the second conductive portion 402 (see FIG. 26). The case where the first electric circuit portion 21 and the second electric circuit portion 22 conduct with each other via the first conductive portion 401 (see FIG. 25) is different from each other. More specifically, the electrical resistance of the second conductive portion 402 is larger than the electrical resistance of the first conductive portion 401.
  • the electrical resistance between the first terminal 211 and the second terminal 221 is in the case where the first electric circuit portion 21 and the second electric circuit portion 22 are conducted via the second conductive portion 402 (see FIG. 26). However, it is larger than the case where the first electric circuit portion 21 and the second electric circuit portion 22 conduct with each other via the first conductive portion 401 (see FIG. 25). As a result, the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 is the one when the first electric circuit portion 21 and the second electric circuit portion 22 are connected via the second conductive portion 402. However, it is smaller than when it is connected via the first conductive portion 401.
  • the operation pin 8I When the operation pin 8I is further moved, the first electric circuit portion 21 and the second electric circuit portion that are separated before the second conductive portion 402 is separated from the separated first electric circuit portion 21 and the second electric circuit portion 22.
  • the third conductive portion 403 is inserted between the portion 22 and the portion 22. Then, as shown in FIG. 27, one end of the third conductive portion 403 (the right end of FIG. 27) comes into contact with (opposite) the opened first electric circuit portion 21, and the other end of the third conductive portion 403 (FIG. 27). (Left end) comes into contact with (opposites) the opened second electric circuit portion 22. Therefore, the current flowing through the second conductive portion 402 will flow through the third conductive portion 403.
  • the operation pin 8I is driven by the gas generator 70 and moves to conduct the first electric circuit portion 21 and the second electric circuit portion 22 via the second conductive portion 402, and then the first electric circuit portion.
  • the 21 and the second electric circuit portion 22 are made conductive via the third conductive portion 403.
  • the electrical resistance of the third conductive portion 403 is different from the electrical resistance of the second conductive portion 402. More specifically, the electrical resistance of the third conductive portion 403 is larger than the electrical resistance of the second conductive portion 402. Therefore, the electrical resistance between the first terminal 211 and the second terminal 221 is in the case where the first electric circuit portion 21 and the second electric circuit portion 22 conduct with each other via the third conductive portion 403 (see FIG. 27). However, it is larger than the case where the first electric circuit portion 21 and the second electric circuit portion 22 conduct with each other via the second conductive portion 402 (see FIG. 26). As a result, the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 is the one when the first electric circuit portion 21 and the second electric circuit portion 22 are connected via the third conductive portion 403. Is smaller than when connected via the second conductive portion 402.
  • the first conductive portion 401, the second conductive portion 402, and the third conductive portion 403 are connected in this order.
  • the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 can be gradually reduced.
  • the first increase amount is different from the second increase amount.
  • the first increase amount is based on the electrical resistance when the first electric circuit portion 21 and the second electric circuit portion 22 are conducted through the first conductive portion 401, and the first electric circuit portion 21 and the first electric circuit portion 21 and the second through the second conductive portion 402. 2 This is the amount of increase in electrical resistance when conducting with the electric circuit portion 22.
  • the second increase amount is derived from the electrical resistance when the first electric circuit portion 21 and the second electric circuit portion 22 are conducted via the second conductive portion 402, and the first electric circuit portion 21 and the second increase amount via the third conductive portion 403. 2 This is the amount of increase in electrical resistance when conducting with the electric circuit portion 22.
  • the fourth conductive portion 404 enters between the opened first electric circuit portion 21 and the second electric circuit portion 22, and then the fifth conductive portion 405 enters. As a result, the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 is further reduced.
  • the distance traveled by the operation pin 8I exceeds a predetermined distance (a distance corresponding to the sum of the thickness of the third electric circuit portion 23 and the dimension between the upper end and the lower end of the plurality of conductive portions)
  • a plurality of distances are obtained.
  • the conductive portion separates from the first electric circuit portion 21.
  • a predetermined distance a distance corresponding to the total of the thickness of the third electric circuit portion 23 and the dimension between the upper end and the lower end of the plurality of conductive portions
  • a plurality of distances are provided.
  • the conductive portion separates from the second electric circuit portion 22.
  • the insulating portion 5I of the operation pin 8I moves between the opened first electric circuit portion 21 and the second electric circuit portion 22.
  • the first electric circuit portion 21 and the second electric circuit portion 22 are insulated by the insulating portion 5I (see FIG. 28). That is, in the insulating portion 5I, the first conductive portion (first conductive portion 401 to fifth conductive portion 405) is separated from at least one of the first electric circuit portion 21 and the second electric circuit portion 22. Insulate between the electric circuit portion 21 and the second electric circuit portion 22.
  • the first electric circuit portion 21 and the second electric circuit portion 22 are conducted through the first conductive portion 401 and then through the second conductive portion 402. Later, it will be insulated. That is, the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 is reduced in magnitude by flowing through the first conductive portion 401, and by flowing through the second conductive portion 402. After its size is further reduced, it is blocked by the insulating portion 5I. As a result, the magnitude of the current at the time of interruption by the insulating portion 5I becomes smaller than that in the case where the second conductive portion 402 is not provided.
  • the blocking device 1I of the present modification it is possible to suppress the generation of an arc when insulating the first electric circuit portion 21 and the second electric circuit portion 22. Further, by suppressing the generation of the arc, the energy of the generated arc can be reduced. Therefore, it is possible to reduce the volume of the relaxation space S2 for confining the arc energy inside. Further, it is possible to reduce the thickness of the wall of the housing 9I for confining the energy of the arc inside. As a result, the breaking performance can be improved and the breaking device 1I can be downsized.
  • the first electric circuit portion 21 and the second electric circuit portion 22 are conducted through the second conductive portion 402 and then through the third conductive portion 403. , Insulated by the insulating portion 5I.
  • the current flowing between the first electric circuit portion 21 and the second electric circuit portion 22 is cut off by the insulating portion 5I after its magnitude is further reduced by flowing through the third conductive portion 403. ..
  • the magnitude of the current at the time of being cut off by the insulating portion 5I is further reduced, and it is possible to suppress the generation of an arc when insulating the first electric circuit portion 21 and the second electric circuit portion 22. ..
  • the operation pin 8J of the breaking device 1J of this modification includes a plurality of conductive portions (first conductive portion 401J (conductive portion 4J) to fifth conductive portion 405J) and an insulating portion 5J. I have.
  • the diameter of the first conductive portion 401J to the fifth conductive portion 405J of the blocking device 1J of this modified example is larger than the diameter of the first conductive portion 401 to the fifth conductive portion 405 of the blocking device 1I of the modified example 9.
  • the vertical dimension of the intervening portion 53J between the first conductive portion 401J and the second conductive portion 402J is the vertical dimension of the conductive member 2 at the boundary portion 240 (the thickness of the conductive member 2 and the groove 24). Difference from depth) is almost equal to. Therefore, when the operation pin 8J moves, the first conductive portion 401J is separated from the separated first electric circuit portion 21 and the second electric circuit portion 22 before the first conductive portion 401J is separated from the separated first electric circuit portion 21.
  • the second conductive portion 402J easily enters between the second electric circuit portion 22 and the second electric circuit portion 22.
  • the blocking device 1J of this modified example since a plurality of conductive portions (first conductive portion 401J to fifth conductive portion 405J) and an insulating portion 5J are provided, the first electric circuit portion 21 and the second electric circuit portion 22 are provided. It is possible to suppress the generation of an arc when the circuit is opened.
  • the housing 9K includes a first body 92K, a first cover 93K, a cap 94K, and a second body 98K.
  • the first body 92K has a box shape having a through hole 920K having a circular cross section and a recess 921K having an open upper surface and a cylindrical inner peripheral surface.
  • the first cover 93K has a concave portion 930K which is cylindrical and has a cylindrical inner peripheral surface having an open lower surface.
  • the first cover 93K is provided with a cylindrical accommodating wall 932K at its upper end for accommodating the gas generator 70 of the drive mechanism 7.
  • the first cover 93K is fitted into the first body 92K so that its outer peripheral surface faces the inner peripheral surface of the recess 921K of the first body 92K.
  • the operation pin 8K is arranged in the internal space of the recess 930K of the first cover 93K and the through hole 920K of the first body 92K.
  • the cap 94K is attached to the first body 92K and the first cover 93K so as to cover the upper surface of the first body 92K and the upper surface of the first cover 93K.
  • An O-ring 62K is arranged between the first body 92K and the cap 94K.
  • the second body 98K has a recess 980K having a circular cross section in the center of the upper surface thereof.
  • the diameter of the recess 980K is substantially the same as the diameter of the through hole 920K.
  • the conductive member 2K is arranged so as to be sandwiched between the first body 92K and the second cover 99K. As shown in FIG. 31, the conductive member 2K is a third electric circuit portion (separation portion) that connects the plate-shaped first electric circuit portion 21K and the second electric circuit portion 22K, and the first electric circuit portion 21K and the second electric circuit portion 22K, respectively. ) 23K and. The width of the third electric circuit portion 23K is smaller than the width of the first electric circuit portion 21K and the width of the second electric circuit portion 22K.
  • a partially cylindrical groove 24K is formed between the first electric circuit portion 21K and the third electric circuit portion 23K, and between the second electric circuit portion 22K and the third electric circuit portion 23K.
  • the gas generator 70 is arranged in a space surrounded by a storage wall 932K of the first cover 93K.
  • An O-ring 64K is arranged between the gas generator 70 and the first cover 93K.
  • the blocking device 1K includes an operating pin 8K including a plurality of conductive portions and an insulating portion 5K.
  • the insulating portion 5K is a part of the operating pin 8K.
  • the main body of the operation pin 8K is composed of an insulating portion 5K.
  • the blocking device 1K includes a holding cap (holding portion) 80K for holding a plurality of conductive portions.
  • the plurality of conductive portions and the holding cap 80K are a part of the operating pin 8K. That is, as shown in FIG. 31, the operation pin 8K includes a plurality of conductive portions and an insulating portion 5K.
  • the plurality of conductive portions include a first conductive portion 401K (conductive portion 4K) and a second conductive portion 402K.
  • the first conductive portion 401K and the second conductive portion 402K are aligned in the moving direction (vertical direction) in which the operation pin 8K moves.
  • the holding cap 80K and the plurality of conductive portions may be regarded as separate members from the operating pin 8K.
  • the insulating portion 5K (member constituting the operation pin 8K) is cylindrical.
  • An annular groove 51K along the circumferential direction of the insulating portion 5K is formed on the outer edge of the upper end of the insulating portion 5K.
  • An O-ring 65K is fitted in the groove 51K.
  • a columnar recess is formed at the lower end of the insulating portion 5K.
  • the main body of the holding cap 80K (described later) is fitted in the recess.
  • the first conductive portion 401K is a long columnar (pin-shaped) to the left and right.
  • the second conductive portion 402K includes a first portion 412K, a second portion 422K, and a third portion 432K.
  • the first part 412K and the second part 422K are long cylindrical (pin-shaped) to the left and right.
  • the first portion 412K faces the opened first electric circuit portion 21K.
  • the second portion 422K faces the opened second electric circuit portion 22K.
  • the third part 432K electrically connects the first part 412K and the second part 422K.
  • the third portion 432K has a plurality of bent portions. More specifically, the third portion 432K includes a linear portion connected to the left end of the first portion 412K and extending upward, and a curved portion extending leftward from the upper end of the linear portion and including an inverted S-shaped portion. It has a linear portion extending downward from the left end of the curved portion and connecting to the second portion 422K. That is, the third portion 432K has a current path longer than the linear distance connecting both ends of the third portion 432K.
  • the holding cap 80K is electrically insulating.
  • the holding cap 80K has a columnar main body portion and a flange portion.
  • the holding cap 80K has a first through hole 501K into which the first conductive portion 401K is inserted and a second through hole 502K into which the second conductive portion 402K is inserted.
  • the first through hole 501K is formed in the collar portion of the holding cap 80K.
  • the second through hole 502K is formed in the main body of the holding cap 80K.
  • the upper end of the second through hole 502K is notched, and the inner surface of the second through hole 502K is connected to the upper surface of the holding cap 80K.
  • the second through hole 502K is a recess formed on the upper surface of the holding cap 80K.
  • the second conductive portion 402K is arranged in the insulating portion 5K.
  • the materials of the first conductive portion 401K and the second conductive portion 402K may be different.
  • the material of the second conductive portion 402K has a higher specific resistance than the material of the first conductive portion 401K.
  • the diameters of the first conductive portion 401K and the second conductive portion 402K may be different from each other.
  • the width (vertical dimension) of the operation pin 8K in the moving direction of the first conductive portion 401K and the second conductive portion 402K is different from each other.
  • the diameter of the first conductive portion 401K or the second conductive portion 402K does not have to be constant in the path of the conductive portion.
  • the path length of the current flowing between the first terminal 211 and the second terminal 221 is the case where the first electric circuit portion 21K and the second electric circuit portion 22K are conductive via the second conductive portion 402K, and the first. It is different in the case where the first electric circuit portion 21K and the second electric circuit portion 22K are electrically connected via the conductive portion 401K.
  • the path length of the current flowing between the first terminal 211 and the second terminal 221 is better when the first electric circuit portion 21K and the second electric circuit portion 22K are conductive via the second conductive portion 402K. It is longer than the case where the first electric circuit portion 21K and the second electric circuit portion 22K are electrically connected via the first conductive portion 401K.
  • the vertical dimension of the intervening portion 53K between the first conductive portion 401K and the second conductive portion 402K at the position facing the opened first electric circuit portion 21K is determined. It is substantially equal to the thickness of the conductive member 2. That is, when the operation pin 8K is driven by the gas generator 70 and moves, the end of the first conductive portion 401K faces the first electric circuit portion 21K, and then the end of the first conductive portion 401K becomes the first electric circuit portion 21K. The end of the second conductive portion 402K faces the first electric circuit portion 21K.
  • the areas of the end of the first conductive portion 401K and the end of the second conductive portion 402K on the side facing the first electric circuit portion 21K may be different.
  • the blocking device 1K of this modified example since a plurality of conductive portions (first conductive portion 401K and second conductive portion 402K) and an insulating portion 5K are provided, the first electric circuit portion 21K and the second electric circuit portion 22K are provided. It is possible to suppress the generation of an arc when the circuit is opened.
  • the breaking device 1L of this modified example includes an operation pin 8L having a shape different from that of the breaking device 1 of the basic example.
  • the same components as those of the blocking device 1 of the basic example are designated by the same reference numerals, and description thereof will be omitted as appropriate.
  • the operation pins 8L of the breaking device 1L of this modified example include a tip portion 81L, an intermediate portion 82L (conductive portion 4L), an arc extinguishing member 30, and an insulating portion 83L (insulating portion 5L). ,have.
  • the tip portion 81L, the intermediate portion 82L, the arc extinguishing member 30, and the insulating portion 83L are arranged in this order from the tip side of the operation pin 8L.
  • the tip portion 81L is formed of, for example, tungsten.
  • the intermediate portion 82L is formed of, for example, a semiconductor such as silicon.
  • the tip portion 81L has a larger electrical resistance than the intermediate portion 82L.
  • the insulating portion 83L is formed of, for example, a synthetic resin as a material.
  • the insulating portion 83L has electrical insulation.
  • the intermediate portion 82L is arranged between the tip portion 81L and the arc extinguishing member 30, and has a smaller electrical resistance than the tip portion 81L. Further, the insulating portion 83L is located on the side opposite to the tip portion 81L side with respect to the arc extinguishing member 30, and has higher electrical insulation than the arc extinguishing member 30.
  • the operating pin 8L When the operating pin 8L is driven by the pressure of the gas generated by the gas generator 70 (see FIG. 1), it is pushed by the operating pin 8L, so that the first electric circuit portion 21 and the second electric circuit portion 22 to the third electric circuit portion 23 is separated. Then, between the first electric path portion 21 and the second electric path portion 22, the tip portion 81L, the intermediate portion 82L, the arc extinguishing member 30, and the insulating portion 83L of the operation pin 8L are inserted in this order. In the state where the operation pin 8L is fully advanced, the insulating portion 83L is arranged between the first electric circuit portion 21 and the second electric circuit portion 22.
  • the tip portion 81L having a relatively large electric resistance comes into contact with the arc first, and the intermediate portion 82L having a relatively small electric resistance comes later. It touches the arc. Therefore, the energy of the arc discharge can be suppressed and the arc current can be gradually reduced as compared with the case where the intermediate portion 82L first comes into contact with the arc. After the arc current is gradually reduced, the arc extinguishing member 30 cuts off the arc, and then the insulating portion 83L electrically insulates between the first electric circuit portion 21 and the second electric circuit portion 22. By forming the operation pin 8L in such a structure, it is possible to improve the blocking performance of the electric circuit including the conductive member 2.
  • the shapes of the operation pins 8, 8A to 8C, 8F to 8L are not limited to the columnar shape, and may be any polygonal columnar shape. Good.
  • the grooves 24, 24B, 24E, 24K of the conductive members 2, 2B, 2E, 2K preferably have a shape that follows the shapes of the operation pins 8, 8A to 8C, 8E to 8L.
  • the shape of the operation pin 8D is not limited to the shape shown in the figure.
  • the conductive portions 4, 4A to 4L and / or the insulating portions 5, 5A to 5L may not be a part of the operation pins 8, 8A to 8L (the portion for separating the separation portion), and may be separate members. ..
  • one end (lower end) of the operation pins 8, 8A to 8C, 8E to 8L is connected to the third electric circuit portions 23, 23B, 23E, 23K of the conductive members 2, 2B, 2E, 2K. It may or may not be in contact.
  • the grooves 24, 24B, 24E, 24K of the conductive members 2, 2B, 2E, 2K are formed on the second surface F2 in place of / in addition to the first surface F1 of the conductive members 2, 2B, 2E, 2K. You may be.
  • the boundary portion 240 does not have to be defined by the grooves 24, 24B, 24E, 24K, and is defined by, for example, one or a plurality of holes penetrating in the thickness direction of the conductive members 2, 2B, 2E, 2K. You may.
  • the boundary portion 240 of the conductive members 2, 2B, 2E, and 2K may be formed of a material different from the other portions.
  • the breaking devices 1, 1A to 1L may be provided with a permanent magnet for extending the generated arc.
  • the permanent magnet may be arranged in the internal space of the housings 9, 9B, 9D, 9I, or may be embedded in the housings 9, 9B, 9D, 9I, for example.
  • the blocking devices 1, 1A to 1C and 1E to 1L may include an arc extinguishing body arranged in the relaxation space S2.
  • the blocking device 1D may include an arc extinguishing body arranged in the internal space of the housing 9D.
  • the arc-extinguishing body is a member having an arc-extinguishing action.
  • the arc extinguishing body is a hydrogen storage alloy, a polyamide (nylon) such as SiC, SiO2, alumina, PA6, PA46, PA66, a material obtained by mixing magnesium hydroxide or magnesium borate with the resin of this polyamide, silicon or silicon carbide (SiC). ), Ceramic, wool-like metal (metal fiber), or the like.
  • the second portions 42, 42A to 42C of the conductive portions 4, 4A to 4C do not have to have the same dimensions and shapes as the first portions 41, 41A to 41C.
  • the second portions 42, 42A to 42C may have different heights from the first portions 41, 41A to 41C.
  • the shape of the plurality of conductive portions is not limited to the pin shape, and may be, for example, a plate shape.
  • the intervening portion (53, 53J, 53K) may be an arc extinguishing member.
  • the housings 9 and 9I of the blocking devices 1, 1A, 1I and 1L may have the same base as the housing 9B of the blocking devices 1B and 1C.
  • the breaking devices 1, 1A to 1C, 1E to 1L are not limited to the configuration in which the operating pins 8, 8A to 8C, 8E to 8L push the conductive members 2, 2B, 2E, and 2K to break, and for example, via another member.
  • the conductive members 2, 2B, 2E and 2K may be broken.
  • the electrical resistances of the first conductive portions 401 and 401J to the fifth conductive portions 405 and 405J do not have to increase in this order.
  • the electric resistance of the second conductive portion 402 may be smaller than the electric resistance of the first conductive portion 401.
  • the conductive portions 4, 4A to 4L may be provided with a thermistor whose resistance value changes as the temperature rises.
  • the conductive portions 4, 4A to 4L may include, for example, a PTC (positive temperature coefficient) element whose resistance value increases as the temperature rises.
  • the conductive portions 4, 4A to 4L move between the first electric circuit portions 21,21B, 21D, 21E, 21K and the second electric circuit portions 22, 22B, 22D, 22E, 22K, and the conductive portions 4, 4A
  • a current flows through ⁇ 4L the temperature of the conductive parts 4, 4A ⁇ 4L rises.
  • the blocking device (1,1A to 1L) of one aspect of the present disclosure includes a housing (9,9B, 9D, 9I, 9K) having an internal space and a housing (9,9B, 9D, 9I, 9K).
  • , 22E, 22K are provided with a separation part (22,22B, 22D, 22E, 22K) for electrically connecting to each other, and a conductive part (4,4A to 4L), which moves in the internal space and is the first electric path.
  • the separation unit (22, 22B, 22D, 22E, 22K) is located in the first direction (lower in FIG. 1) from the operation pins (8, 8A to 8L), and the operation pins (8, 8A to 8L) are driven.
  • the separation part (22,22B, 22D, 22E, 22K) is moved to the first electric path part by the operation pin (8,8A to 8L).
  • the first conductive section (4, 4A to 4L) becomes the first electric circuit section (21).
  • the first electric circuit part (21, 21B, 21D, 21E, 21K) and the second electric circuit part (22,) are compared with the case where the operation pin does not have the conductive part (4,4A to 4L). 22B, 22D, 22E, 22K)
  • the magnitude of the current flowing through the first electric circuit section (21, 21B, 21D, 21E, 21K) and the second electric circuit section (22, 22B, 22D, 22E, 22K) when insulating It is possible to reduce the size. It is possible to suppress the generation of an arc when insulating the first electric circuit portion (21,21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K). Further, by suppressing the generation of the arc, it becomes possible to miniaturize the housing (9, 9B, 9D, 9I, 9K) for confining the energy of the arc.
  • the operating pins (4,4A-4L) have a first insulating portion (5,5A-5L), and the first conductive portion (4,4A-4L) is the first.
  • the operation pins (4, 4A to 4L) are the first.
  • the first electric circuit portion (21,21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K) are first. They are insulated from each other by insulating portions (5, 5A to 5L).
  • the first electric circuit part (21,21B, 21D, 21E, 21K) and the second electric circuit part (22, 22B, 22D, 22E, 22K) are provided by the first insulating part (5, 5A to 5L). And can be insulated, and the generation of arc can be suppressed.
  • the conductive portion (4,4A, 4B, 4D to 4J, 4L) has an operating pin (8,8A, 8B). , 8D to 8J, 8L) are fixed to the members.
  • the conductive portion (4,4A, 4B, 4D to 4J, 4L) can be held by the operating pins (8,8A, 8B, 8D to 8J, 8L).
  • the first electric circuit portion (21,21B, 21D, 21E, 21K) is the first terminal (211) electrically connected to an external circuit. , 211E), and the second electric circuit section (22, 22B, 22D, 22E, 22K) has a second terminal (221,221E) electrically connected to an external circuit, and a first terminal (211). , 211E) and the second terminal (221,221E), the first electric circuit part (21,21B, 21D, 21E, 21K) has the second electric circuit part (22, 22B, 22D, 22E, 22K).
  • the first electric circuit portion (21,21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K) are insulated, the first electric circuit portion (21, 21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K) can be reduced in magnitude of the current flowing through them. Therefore, it is possible to suppress the generation of an arc when insulating the first electric circuit portion (21,21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K). ..
  • the first electric circuit portion (21,21B, 21D, 21E, 21K) is a first terminal (211) electrically connected to an external circuit. , 211E), and the second electric circuit section (22, 22B, 22D, 22E, 22K) has a second terminal (221,221E) electrically connected to an external circuit, and a first terminal (211). , 211E) and the second terminal (221,221E), the first electric circuit part (21,21B, 21D, 21E, 21K) has the second electric circuit part (22, 22B, 22D, 22E, 22K).
  • the first electric circuit part (21, 21B, 21D, 21E, 21K) is connected to the second electric circuit part (22, 22B, 22D, 22D,) when it is connected to the conductive part (4,4A to 4L). 22E, 22K) is smaller than when connected via a separator.
  • the first electric circuit portion (21,21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K) are insulated, the first electric circuit portion (21, 21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K) can be reduced in magnitude of the current flowing through them. Therefore, it is possible to suppress the generation of an arc when insulating the first electric circuit portion (21,21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K). ..
  • a driving unit (7,7D) is further provided, and the driving unit (7,7D) is a gas generator (70) that generates gas by combustion. , 70D), and the operation pins (8,8A to 8L) are moved in conjunction with the pressure of the gas generated by the gas generator (70,70D).
  • the operation pins (8,8A to 8L) move in conjunction with the pressure of the gas generated by the gas generator (70,70D), the gas generator (70,70D) is not used.
  • the operation pins (8.8A to 8L) can be moved at a higher speed than the above. As a result, the arc can be rapidly extended, the duration of the generated arc can be shortened, and the cutoff performance of the electric path can be improved.
  • Another aspect of the blocking device (1,1A to 1C, 1E to 1L) of the present disclosure includes a first electric circuit portion (21,21B, 21E, 21K) and a second electric circuit portion (22, 22B, 22E, 22K). And a conductive member (2,2B, 2E, 2K) including a separation portion is further provided, and the operation pins (8,8A to 8C, 8E to 8L) break the conductive member (2,2B, 2E, 2K).
  • the first electric circuit portion (21,21B, 21E, 21K) and the second electric circuit portion (22, 22B, 22E, 22K) are separated from each other.
  • the movement of the operation pins (8,8A to 8C, 8E to 8L) and the first electric circuit part (21,21B, 21E, 21K) and the second electric circuit part (22,22B, 22E, 22K) It can be easily linked with the electrical disconnection of.
  • the operating pin (8D) is relative to at least one of the first electrical circuit section (21D) and the second electric circuit section (22D).
  • the first electric circuit portion (21D) and the second electric circuit portion (22D) are separated from each other by moving them in a targeted manner.
  • the movement of the operation pin (8D) and the electrical disconnection of the first electric circuit portion (21D) and the second electric circuit portion (22D) can be easily linked.
  • the conductive portions (4,4A to 4C) are the first portion (41,41A to 41C) and the second portion (42,42A to). 42C), a third portion (43,43A to 43C) connecting the first portion (41,41A to 41C) and the second portion (42,42A to 42C), and a conductive portion (4,4A).
  • the first part (41,41A to 41C) is the first electric circuit part (21, 21B)
  • the second part (42,42A to 42C) is in contact with the second electric circuit part (22,22B)
  • the electrical resistance of the third part (43,43A to 43C) is the first part (41,41A). It is larger than the electric resistance of ⁇ 41C) and the electric resistance of the second part (42, 42A to 42C).
  • the operating pins (8I to 8K) have a second conductive portion (401, 401J, 401K) electrically insulated from the first conductive portion (401, 401J, 401K).
  • 402, 402J, 402K) are further provided, and the first conductive portion (401, 401J, 401K) is located in the first direction (lower in FIG. 27) from the second conductive portion (402, 402J, 402K).
  • the first conductive section (401, 401J, 401K) and the second conductive section are electrically connected by the first conductive section (401, 401J, 401K)
  • the first conductive section (401, 401J, 401K) becomes the first. It moves in the direction of 1 (downward in FIG. 27), and the second conductive portion (402, 402J, 402K) moves between the first electric passage portion (21,21K) and the second electric passage portion (22,22K).
  • the first electric circuit portion (21,21K) and the second electric circuit portion (22,22K) are electrically connected.
  • the path is blocked after the size is reduced and the size is further reduced by flowing through the second conductive portion (402, 402J, 402K).
  • an arc is generated when the first electric circuit portion (21,21K) and the second electric circuit portion (22,22K) are insulated, as compared with the case where the second conductive portion (402, 402J, 402K) is not provided. It becomes possible to suppress.
  • the operating pins (8I to 8K) have an insulating portion (5I to 5K), and the second conductive portion (402, 402J, 402K) is the first.
  • the operation pins (8I to 8K) are further moved in the first direction (downward in FIG. 27).
  • the first electric circuit portion (21,21K) and the second electric circuit portion (22,22K) are insulated from each other by an insulating portion (5I to 5K).
  • the insulating portion (5I to 5K) makes it possible to insulate the first electric circuit portion (21,21K) and the second electric circuit portion (22,22K), thereby suppressing the generation of an arc. Is possible.
  • the electrical resistance between the first electric circuit section (21,21K) and the second electric circuit section (22,22K) is the first conductive section (401K).
  • 401J, 401K electrically connects the first electric circuit section (21,21K) and the second electric circuit section (22,22K)
  • the second conductive section (402, 402J, 402K) is the first electric circuit section. It differs depending on whether the unit (21,21K) and the second electric circuit unit (22,22K) are electrically connected.
  • the first electric circuit portion (21,21K) and the second electric circuit portion (22,22K) are insulated by, for example, the insulating portion (5I to 5K), the first electric circuit portion (21,21K) and It is possible to reduce the magnitude of the current flowing through the second electric circuit portion (22, 22K). Therefore, it is possible to suppress the generation of an arc when insulating the first electric circuit portion (21,21K) and the second electric circuit portion (22,22K).
  • the electrical resistance between the first electric circuit section (21,21K) and the second electric circuit section (22,22K) is the second conductive section (402).
  • 402J, 402K electrically connects the first electric circuit section (21,21K) and the second electric circuit section (22,22K)
  • the first conductive section (401, 401J, 401K) is the first. It is larger than when the first electric circuit portion (21,21K) and the second electric circuit portion (22,22K) are electrically connected.
  • the path is blocked after the size is reduced and the size is further reduced by flowing through the second conductive portion (402, 402J, 402K).
  • an arc is generated when the first electric circuit portion (21,21K) and the second electric circuit portion (22,22K) are insulated, as compared with the case where the second conductive portion (402, 402J, 402K) is not provided. It becomes possible to suppress.
  • the operating pins (8I, 8J) are electrically connected to the first conductive portion (401, 401J) and the second conductive portion (402, 402J).
  • An insulated third conductive portion (403,403J) is further provided, and the second conductive portion (402, 402J) is located in the first direction (lower in FIG. 27) from the third conductive portion (403,403J).
  • the second conductive portion (402, 402J) electrically connects the first electric circuit portion (21) and the second electric path portion (22), the second conductive portion (402, 402J) is in the first direction (402, 402J).
  • the magnitude of the current flowing through the first electric circuit portion (21) and the second electric circuit portion (22) when insulating the first electric circuit portion (21) and the second electric circuit portion (22) is determined. It can be made smaller. Therefore, it is possible to suppress the generation of an arc when insulating the first electric circuit portion (21) and the second electric circuit portion (22).
  • the electric resistance between the first electric circuit portion (21) and the second electric circuit portion (22) is determined by the third conductive portion (403, 403J).
  • the second conductive portion (402, 402J) is the first electric circuit portion (21) and the second electric circuit portion (22). 22) is larger than when electrically connected to.
  • the magnitude of the current flowing between the first electric circuit portion (21) and the second electric circuit portion (22) is reduced by flowing through the second conductive portion (402, 402J).
  • the path is blocked after its size is further reduced by flowing through the third conductive section (403, 403J).
  • the arc when the insulating portion (5I, 5J) insulates the first electric circuit portion (21) and the second electric circuit portion (22) is compared with the case where the third conductive portion (403, 403J) is not provided. It is possible to suppress the occurrence.
  • the first conductive portion (401, 401J) electrically connects the first electric circuit portion (21) and the second electric circuit portion (22).
  • the electrical resistance between the first electric circuit portion (21) and the second electric circuit portion (22) is R1
  • the second conductive portion (402, 402J) is the first electric circuit portion (21) and the second electric circuit portion (22).
  • the electrical resistance between the first electric circuit portion (21) and the second electric circuit portion (22) is R2
  • the third conductive portion (403, 403J) is the first electric circuit portion (21).
  • the degree of freedom in designing the operating pins (8I, 8J) is increased.
  • the length of the second conductive portion (402K) along the line is different.
  • the electric resistance of the first conductive part (401K) and the electric resistance of the second conductive part (402K) can be made different.
  • the path length of the current flowing between the section (21K) and the second electric circuit section (22K) is such that the first conductive section (401K) electrically connects the first electric circuit section (21K) and the second electric circuit section (22K). It is longer than the path length of the current flowing between the first electric circuit portion (21K) and the second electric circuit portion (22K) when connected to.
  • the electric resistance of the first conductive part (401K) and the electric resistance of the second conductive part (402K) can be made different.
  • the operating pins (8F to 8H, 8L) include an arc-extinguishing member (30) having an arc-extinguishing action.
  • the resistance value of the first conductive portion (4,4A to 4L) changes as the temperature rises.
  • a conductive portion (4,4A to 4L) is provided between the first electric circuit portion (21,21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K). Changes and a current flows through the conductive parts (4,4A to 4L), the temperature of the conductive parts (4,4A to 4L) changes. As a result, the electrical resistance of the conductive portion (4,4A to 4L) changes, and the current flowing through the conductive portion (4,4A to 4L) changes. Therefore, it is possible to suppress the generation of an arc when insulating the first electric circuit portion (21,21B, 21D, 21E, 21K) and the second electric circuit portion (22, 22B, 22D, 22E, 22K). Become.

Abstract

La présente invention concerne un dispositif disjoncteur comprenant : un boîtier ayant un espace interne ; un premier trajet électrique disposé dans le boîtier ; un second trajet électrique disposé dans le boîtier ; une section de séparation disposée dans l'espace interne dans le boîtier et connectant électriquement le premier trajet électrique et le second trajet électrique l'un à l'autre ; une broche d'actionnement ayant une première section conductrice disposée en son sein, déplaçant l'espace interne, et séparant la section de séparation d'au moins le premier trajet électrique ou le second trajet électrique ; et une unité d'entraînement qui actionne la broche d'actionnement. La section de séparation est positionnée plus loin dans une première direction que la broche d'actionnement et, lorsque la broche d'actionnement est déplacée dans la première direction par l'unité d'entraînement, la section de séparation est séparée du premier trajet électrique ou du second trajet électrique par la broche d'actionnement. Après que la section de séparation est séparée du premier trajet électrique ou du second trajet électrique, la première section conductrice se déplace entre le premier trajet électrique et le second trajet électrique et connecte électriquement le premier trajet électrique et le second trajet électrique.
PCT/JP2020/010043 2019-03-20 2020-03-09 Dispositif disjoncteur WO2020189377A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2019053845 2019-03-20
JP2019-053845 2019-03-20
JP2019-169812 2019-09-18
JP2019169812A JP2020161468A (ja) 2019-03-20 2019-09-18 遮断装置

Publications (1)

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WO2020189377A1 true WO2020189377A1 (fr) 2020-09-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022043162A1 (fr) * 2020-08-28 2022-03-03 Eaton Intelligent Power Ltd. Dispositif de séparation pyromécanique
WO2023218715A1 (fr) * 2022-05-13 2023-11-16 太平洋精工株式会社 Dispositif de disjoncteur électrique

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JP2010086653A (ja) * 2007-09-27 2010-04-15 Daikin Ind Ltd 切断装置、ブレーカ、接触器、および電気回路遮断器
US20190051478A1 (en) * 2015-10-19 2019-02-14 Hirtenberger Automotive Safety Gmbh Pyrotechnic isolator
JP2019029152A (ja) * 2017-07-28 2019-02-21 株式会社ダイセル 並列回路を有する電気回路遮断装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010086653A (ja) * 2007-09-27 2010-04-15 Daikin Ind Ltd 切断装置、ブレーカ、接触器、および電気回路遮断器
US20190051478A1 (en) * 2015-10-19 2019-02-14 Hirtenberger Automotive Safety Gmbh Pyrotechnic isolator
JP2019029152A (ja) * 2017-07-28 2019-02-21 株式会社ダイセル 並列回路を有する電気回路遮断装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022043162A1 (fr) * 2020-08-28 2022-03-03 Eaton Intelligent Power Ltd. Dispositif de séparation pyromécanique
GB2612745A (en) * 2020-08-28 2023-05-10 Eaton Intelligent Power Ltd Pyromechanical separation device
WO2023218715A1 (fr) * 2022-05-13 2023-11-16 太平洋精工株式会社 Dispositif de disjoncteur électrique

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