WO2021131535A1 - Cutoff device - Google Patents

Cutoff device Download PDF

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Publication number
WO2021131535A1
WO2021131535A1 PCT/JP2020/044692 JP2020044692W WO2021131535A1 WO 2021131535 A1 WO2021131535 A1 WO 2021131535A1 JP 2020044692 W JP2020044692 W JP 2020044692W WO 2021131535 A1 WO2021131535 A1 WO 2021131535A1
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WO
WIPO (PCT)
Prior art keywords
conductor
cooling body
space
terminal portion
separation
Prior art date
Application number
PCT/JP2020/044692
Other languages
French (fr)
Japanese (ja)
Inventor
健児 金松
進弥 木本
瞬 伊藤
康平 澁瀬
航 喜多見
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.)
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Publication date
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 WO2021131535A1 publication Critical patent/WO2021131535A1/en

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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.
  • the blocking device includes a gas generator that generates gas, a housing having an internal space, and a first conductor that is at least partially arranged in the internal space and connected to an external electric path.
  • a second conductor which is at least partially arranged in the internal space and is connected in parallel with the first conductor, and a second conductor which is arranged in the internal space and is provided above the first conductor and the second conductor.
  • a cooling body is provided, and the first conductor is housed in the first terminal portion connected to the external electric circuit, the second terminal portion connected to the external electric path, and the internal space of the housing. It has a first separation part that connects the first terminal part and the second terminal part, and by moving the operation pin, the first separation part becomes the first terminal part or the second terminal part.
  • the second conductor is separated from the third terminal portion connected to the first terminal portion of the first conductor, and the fourth terminal portion connected to the second terminal portion of the first conductor. It has a portion and a second separation portion that is housed in the internal space of the housing and connects the third terminal portion and the fourth terminal portion, and the second separation portion is formed by moving the operation pin. Is separated from the third terminal portion or the fourth terminal portion, the first separation portion and the second separation portion are located below the operation pin, and the cooling body is below the operation pin. It is provided.
  • FIG. 1 is a cross-sectional perspective view of the blocking device of one embodiment.
  • FIG. 2 is a perspective view of the blocking device of the same.
  • FIG. 3 is a perspective view of a main part of the above-mentioned breaking device.
  • FIG. 4 is a perspective view of a main part of the above-mentioned breaking device.
  • FIG. 5 is a cross-sectional perspective view showing a state in which a part of the member of the blocking device is removed.
  • FIG. 6 is a cross-sectional view of the breaking device of the same as above, showing a state before the operation pin is driven.
  • FIG. 7 is a cross-sectional view of the breaking device of the same as above, showing a state immediately after the operation pin is driven.
  • FIG. 1 is a cross-sectional perspective view of the blocking device of one embodiment.
  • FIG. 2 is a perspective view of the blocking device of the same.
  • FIG. 3 is a perspective view of a main part of the above-mentione
  • FIG. 8 is a cross-sectional view of the breaking device of the same as above, and is a view showing a state after the operation pin is driven.
  • FIG. 9 is a cross-sectional view of the breaking device of the same as above, showing a state in which the movement of the operation pin is completed.
  • FIG. 10 is a cross-sectional view of the blocking device of the first modification.
  • FIG. 11 is a cross-sectional view of the blocking device of the second modification.
  • FIG. 12 is a cross-sectional view of the blocking device of the modified example 3.
  • FIG. 13 is a cross-sectional view of the blocking device of the modified example 4.
  • each of the following embodiments is only 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 always reflect the actual dimensional ratio. Absent.
  • the shutoff device 1 of the present embodiment has a first conductor 2, a second conductor 5, a cooling body 3, and a gas generator 70, as shown in FIG.
  • the operation pin 8 and the housing 9 are provided.
  • the first conductor 2 is connected to an external electric circuit.
  • the first conductor 2 has terminal portions 21 and 22, and a separation portion 23.
  • the terminal portions 21 and 22 are portions of the first conductor 2 that are connected to an external electric circuit.
  • the separation portion 23 is a portion of the first conductor 2 that connects the terminal portions 21 and 22.
  • the second conductor 5 is connected in parallel with the first conductor 2.
  • the second conductor 5 has terminal portions 51 and 52 and a separation portion 53.
  • the terminal portions 51 and 52 are portions of the second conductor 5 that are connected to the first conductor 2.
  • the separation portion 53 is a portion of the second conductor 5 that connects the terminal portions 51 and 52.
  • the second conductor 5 has a first end 510 and a second end 520.
  • the first end 510 is an end portion of one of the terminal portions 51 and 52 that is connected to the corresponding terminal portion 21.
  • the second end 520 is an end portion of the other terminal portion 52 of the terminal portions 51 and 52 that is connected to the corresponding terminal portion 22.
  • the housing 9 has an internal space 90.
  • the separating portion 23 of the first conductor 2 and the separating portion 53 of the second conductor 5 are housed in the internal space 90.
  • the gas generator 70 generates gas by burning the fuel 74.
  • the operation pin 8 is arranged in the internal space 90 of the housing 9.
  • the operation pin 8 is driven by the pressure of the gas generated by the gas generator 70 and moves in the moving direction (lower part of FIG. 1).
  • the separation unit 23 and the separation unit 53 are located in the projection region of the operation pin 8 in the moving direction of the operation pin 8. In other words, the separation unit 23 and the separation unit 53 are located below the operation pin 8. In the present embodiment, the separation unit 53 is separated from the operation pin 8 by the separation unit 23. That is, the operation pin 8, the separation unit 23, and the separation unit 53 are arranged in this order in the moving direction of the operation pin 8.
  • the separation unit 23 is separated from at least one (here, both) of the terminal units 21 and 22 by the movement of the operation pin 8. Further, as shown in FIG. 8, the separation unit 53 is separated from at least one (here, both) of the terminal units 51 and 52 by the movement of the operation pin 8.
  • the cooling body 3 is arranged in the internal space 90 of the housing 9.
  • the cooling body 3 is arranged in the projection region of the operating pin 8 in the moving direction of the operating pin 8. In other words, the cooling body 3 is located below the operating pin 8.
  • the cooling body 3 cools the arc generated in the internal space 90.
  • the path (first path) passes through the separation portion 23 of the first conductor 2.
  • the path (second path) passing through the separation portion 53 of the second conductor 5 a current flows through the parallel circuit.
  • the separation unit 23 is separated from the terminal units 21 and 22 (see FIG. 7). As a result, the first path is cut off and current flows only in the second path (commutation).
  • the separation unit 53 is further separated from the terminal units 51 and 52 by the movement of the operation pin 8 (see FIG. 8). As a result, the second path is blocked. At this time, arcs A1 and A2 may be generated at a position where the separation portion 53 is separated from the terminal portions 51 and 52.
  • the cooling body 3 comes into contact with the arc A1 generated when the separating portion 53 is separated from the terminal portion 51 and the arc A2 generated when the separating portion 53 is separated from the terminal portion 52. As a result, the arcs A1 and A2 are cooled, and the extinguishing of the arcs A1 and A2 is promoted.
  • the metal gas constituting the arc adheres to the cooling body 3. Therefore, the presence of the cooling body 3 can suppress an increase in pressure in the internal space 90 due to the generation of an arc.
  • the electric circuit between the terminal portions 21 and 22 changes from the parallel circuit of the first path and the second path to the circuit of only the second path by blocking the first path. It changes with.
  • the electrical resistance of the electric circuit between the terminals 21 and 22 increases, and the magnitude of the current flowing through this electric circuit decreases (current limiting).
  • the electric circuit between the terminal portions 21 and 22 is cut off by separating the separation portion 53 in a state where the magnitude of the current is reduced.
  • the breaking device 1 of the present embodiment the magnitude of the current flowing through the electric circuit when the electric circuit is cut off is smaller than that of the breaking device 1 not provided with, for example, the separation unit 53. Therefore, the breaking device 1 can suppress the generation of an arc as compared with the breaking device not provided with the separation unit 53. It should be noted that suppressing the generation of an arc is not limited to not generating the arc, but may include shortening the duration of the generated arc or reducing the energy of the generated arc.
  • the cooling body 3 is arranged in the projection region of the operating pin 8 in the moving direction of the operating pin 8. In other words, the cooling body 3 is located below the operating pin 8. Therefore, the cooling body 3 is likely to come into contact with the generated arc. This makes it possible to promote the extinguishing of the arc.
  • the blocking device 1 includes a first conductor 2, a second conductor 5, a cooling body 3, a gas generator 70, an operation pin 8, and a housing 9. Further, the blocking device 1 includes a first regulating body 41 and a second regulating body 42.
  • 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 gas generator 70 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 direction in which the operation pin 8 and the first conductor 2 face each other is referred to as the vertical direction
  • the operation pin 8 The side of the first conductor 2 is referred to as the lower side, and the side of the operation pin 8 as viewed from the first conductor 2 is referred to as the upper side.
  • the longitudinal direction of the first conductor 2 and the direction in which the terminal portions 21 and 22 are lined up is referred to as a left-right direction.
  • a direction orthogonal to both the vertical direction and the horizontal direction (direction perpendicular to the paper surface of FIG. 6) is referred to as a front-back direction. It should be noted that these directions are for convenience of explaining the structure of the blocking device 1, and do not specify the orientation of the blocking device 1 when the blocking device 1 is used.
  • the first conductor 2 is made of copper, for example. As shown in FIGS. 3 and 6, the first conductor 2 is formed in the shape of a rectangular plate having a thickness in the vertical direction and a long shape in the horizontal direction. As shown in FIG. 3, the terminal portions 21 and 22 and the separating portion 23 have the same width (dimension in the front-rear direction) and thickness (dimension in the vertical direction).
  • the terminal portions 21 and 22 are electrically connected to an external electric circuit (electric circuit of an electric vehicle). Each of the terminal portions 21 and 22 can be electrically connected to an external electric circuit by appropriate means such as fitting, bonding, welding, and screwing.
  • the separation unit 23 connects the terminal units 21 and 22.
  • the terminal portions 21 and 22 and the separation portion 23 are integrally formed. In the longitudinal direction of the first conductor 2, one terminal portion 21, the separation portion 23, and the other terminal portion 22 are arranged in this order.
  • the first conductor 2 has two grooves 24 arranged in the longitudinal direction of the first conductor 2.
  • Each groove 24 is a first surface F1 of a first surface F1 (see FIG. 6) of the first conductor 2 and a second surface F2 (see FIG. 6) opposite to the first surface F1. Is formed in.
  • the first surface F1 is a surface facing the operation pin 8.
  • the depth direction of each groove 24 is along the thickness direction of the first conductor 2.
  • Each of the two grooves 24 is partially cylindrical (arc-shaped).
  • 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 one terminal portion 21 and the separation portion 23, and the boundary portion 240 between the other terminal portion 22 and the separation portion 23.
  • the breaking strength of the boundary portion 240 is equal to or less than the breaking strength of each of the terminal portions 21 and 22. Further, the breaking strength of the boundary portion 240 is equal to or less than the breaking strength of the separating portion 23. That is, the boundary portion 240 is more likely to break than other portions of the first conductor 2.
  • Through holes are formed near the grooves 24 in each of the two terminal portions 21 and 22.
  • the second conductor 5 is made of, for example, copper. However, the present invention is not limited to this, and the second conductor 5 may be formed of a conductive material having a higher resistivity than the material of the first conductor 2. The thickness of the second conductor 5 is thinner than the thickness of the first conductor 2.
  • the second conductor 5 includes a bottom plate portion 501 that is long in the left-right direction, a pair of vertical plate portions 502,503 extending upward from both ends of the bottom plate portion 501, and a pair of vertical plate portions 502,503. It integrally has a pair of collar portions 504 and 505 extending in directions away from each other from the upper end of the above.
  • the width of each of the pair of flange portions 504 and 505 (dimensions in the front-rear direction) is larger than the width of the bottom plate portion 501 (dimensions in the front-rear direction).
  • Through holes are formed in each of the collar portions 504 and 505.
  • the second conductor 5 can be formed, for example, by subjecting a metal plate thinner than the first conductor 2 to punching and bending.
  • the bottom plate portion 501 has two narrow portions 54 having a width (dimensions in the front-rear direction) smaller than the other portions of the bottom plate portion 501.
  • the two narrow portions 54 are provided at symmetrical positions in the longitudinal direction of the bottom plate portion 501.
  • the two narrow portions 54 define the boundary portion between one terminal portion 51 and the separation portion 53, and the boundary portion between the other terminal portion 52 and the separation portion 53.
  • the narrow portion 54 is more likely to break than other portions of the bottom plate portion 501.
  • the housing 9 is made of, for example, resin.
  • the housing 9 has a space (internal space 90) inside the housing 9.
  • the internal space 90 is a closed space isolated from the outside of the housing 9.
  • the housing 9 includes a first body 91, a second body 92, a third body 93, a fourth body 94, a first holder 95, and a second holder. It has 96 and. Note that FIG. 5 shows the shutoff device 1 in a state in which the cooling body 3 and the operation pin 8 are removed.
  • the first body 91 has a rectangular box shape. At the center of the upper surface of the first body 91, a tubular recess 910 having an inner peripheral surface having a circular cross section and opening upward is formed. The bottom surface of the recess 910 is a curved surface. An annular recess is formed around the recess 910 on the upper surface of the first body 91. Due to this recess, an annular groove 911 is formed in a state where the second body 92 is overlapped on the upper surface of the first body 91.
  • the second body 92 has a rectangular box shape.
  • the second body 92 is superposed on the upper surface of the first body 91.
  • a through hole 920 having a circular cross section extending in the vertical direction is formed in the center of the second body 92.
  • the diameter of the through hole 920 is smaller than the diameter of the recess 910 of the first body 91.
  • a recess 921 having a circular cross section having a diameter larger than the diameter of the through hole 920 is formed concentrically with the through hole 920.
  • a recess 921 having a depth of about the thickness of the second conductor 5 and extending in the left-right direction is formed.
  • the bottom plate portion 501 of the second conductor 5 is arranged in this recess.
  • a fitting recess extending in the left-right direction is formed on the upper surface of the second body 92. The lower portion of the first conductor 2 is fitted into the fitting recess.
  • the third body 93 has a rectangular box shape.
  • the third body 93 is superposed on the upper surface of the second body 92.
  • a through hole 930 having a circular cross section extending in the vertical direction is formed in the center of the third body 93.
  • a recess 931 having a circular cross section having a diameter larger than the diameter of the through hole 930 is formed concentrically with the through hole 930.
  • the diameter of the recess 931 is substantially the same as the diameter of the recess 921.
  • an annular rib 932 protruding inward from the inner peripheral surface of the through hole 930 is formed above the recess 931.
  • a fitting recess extending in the left-right direction is formed on the lower surface of the third body 93. The upper portion of the first conductor 2 is fitted into the fitting recess.
  • An annular recess 933 is formed around the through hole 930 on the upper surface of the third body 93.
  • the lower end portion of the second holder 96 is fitted into this recess.
  • the fourth body 94 has a shape in which a rectangular box-shaped portion and a columnar portion formed on the upper surface thereof are combined.
  • the fourth body 94 is superposed on the upper surface of the third body 93.
  • a through hole extending in the vertical direction is formed in the center of the fourth body 94.
  • An annular groove is formed on the lower surface of the fourth body 94 (the surface in contact with the upper surface of the third body 93). The O-ring 62 is fitted into this groove.
  • the first holder 95 has a first portion 951 and a second portion 952.
  • the first part has a hollow cylindrical shape whose axis is along the vertical direction.
  • the first portion 951 has recesses on both left and right side surfaces thereof.
  • the second portion is a hollow cylinder concentric with the first portion 951.
  • the second portion 952 extends upward from the upper surface of the first portion 951.
  • the outer diameter of the second portion 952 is substantially equal to the inner diameter of the rib 932 of the third body 93.
  • the first holder 95 has a through hole 950 having a circular cross section extending in the vertical direction in the center thereof.
  • a step 953 is formed in an annular shape on the inner peripheral surface (inner surface of the through hole 950) of the first holder 95.
  • the diameter of the through hole 950 is larger in the upper portion than the step 953 than in the lower portion.
  • the first holder 95 has a through hole 954 having a rectangular cross section that penetrates in the left-right direction.
  • the cross-sectional shape of the through hole 954 is substantially the same as the cross-sectional shape of the first conductor 2.
  • the first conductor 2 is held in the first holder 95 by being inserted into the left and right through holes 954 of the first holder 95.
  • the first portion 951 is located in the space surrounded by the recesses 921 and 931, and the outer circumference of the second portion 952 is on the inner peripheral surface of the rib 932 of the third body 93. It is held between the second body 92 and the third body 93 in a state where the surfaces are in contact with each other.
  • the diameter of the through hole 950 of the first holder 95 is substantially equal to the diameter of the groove 24 in the first conductor 2. More specifically, the diameter of the through hole 950 is smaller than the outer diameter of the groove 24 and larger than the inner diameter.
  • the first conductor 2 is held by the first holder 95 at a position where the groove 24 faces the lower end of the inner surface of the through hole 950.
  • the end portion of one terminal portion 21 on the separation portion 23 side and the end portion of the other terminal portion 22 on the separation portion 23 side are held by the housing 9 (first holder 95). ..
  • the end portion of one terminal portion 21 opposite to the separation portion 23 and the end portion of the other terminal portion 22 opposite to the separation portion 23 are exposed to the outside of the housing 9. ing.
  • the second conductor 5 is arranged so that the bottom plate portions 501 and the vertical plate portions 502 and 503 are along the lower surface and the side surface of the first holder 95, and the flange portions 504 and 505 are in contact with the lower surface of the first conductor 2. Will be done. Then, for example, a bolt common to the through hole formed in the flange portion 504 (505) of the second conductor 5 and the through hole formed in the terminal portion 21 (22) of the first conductor 2. The first conductor 2 and the second conductor 5 are bonded by connecting the nut to the bolt.
  • the pair of flange portions 504 and 505 are connected to the terminal portions 21 of the first conductor 2, respectively, at the first end 510 and the second end 520. Corresponds to.
  • the second conductor 5 is thinner than the first conductor 2. Further, the length of the second path is longer than the length of the first path.
  • the first path is a portion (a portion connected to the first end 510 and a portion connected to the second end 520) of the first conductor 2 connected to the second conductor 5. The portion including the separation portion 23).
  • the second path is a portion (a portion including the separation portion 53) between the portions (first end 510 and second end 520) connected to the first conductor 2 in the second conductor 5. Therefore, in the breaking device 1, the electric resistance of the first path is smaller than the electric resistance of the second path.
  • the electrical resistance of the portion of the first conductor 2 between the portion connected to the first end 510 and the portion connected to the second end 520 is the first in the second conductor 5. It is smaller than the electrical resistance of the part between the end 510 and the second end 520.
  • the electrical resistance of the first path is preferably sufficiently smaller than the electrical resistance of the second path.
  • the electric resistance of the first path is 1/100 or less of the electric resistance of the second path.
  • the melting point of the portion of the second conductor 5 between the first end 510 and the second end 520 is the portion connected to the first end 510 of the first conductor 2 and the second end. It is higher than the melting point of the part between it and the part connected to 520. That is, in the blocking device 1, the portion constituting the second path is less likely to melt than the portion constituting the first path.
  • the first conductor 2 is fitted with the upper surface of the second body 92. It is fitted into the recess and the fitting recess on the lower surface of the third body 93.
  • the bottom plate portion 501 of the second conductor 5 is located in the recess formed in the bottom surface of the recess 921 of the second body 92, and the lower surface of the first holder 95 and the recess of the second body 92. It is sandwiched between the bottom surface of the place 921 and the bottom surface.
  • the pair of vertical plate portions 502 and 503 of the second conductor 5 are along the left and right side walls of the first holder 95.
  • the first holder 95 may be made of, for example, a material having higher heat resistance than the material of the second body 92 and the material of the third body 93.
  • the second holder 96 is arranged in the through hole of the fourth body 94.
  • the outer peripheral surface of the second holder 96 has a shape along the inner peripheral surface of the through hole of the fourth body 94. Further, the lower end portion of the second holder 96 is fitted in the recess 933 of the third body 93.
  • the second holder 96 has an inner peripheral surface having a circular cross section and has a recess 960 that opens downward.
  • the diameter of the inner peripheral surface of the recess 960 is substantially equal to the diameter of the inner peripheral surface of the through hole 930 of the third body 93.
  • the second holder 96 is provided with a cylindrical accommodating wall 961 at the upper end thereof.
  • a gas generator 70 is arranged inside the containment wall 961.
  • An O-ring 64 is arranged between the containment wall 961 and the gas generator 70.
  • the internal space 90 of the housing 9 is sealed.
  • the internal space 90 of the housing 9 is the inner surface of the recess 910 of the first body 91, the inner surface of the through hole 920 of the second body 92, the inner surface of the through hole 950 of the first holder 95, and the groove 24 of the first conductor 2. It is a space surrounded by the side surface, the inner surface of the through hole 930 of the third body 93, the inner surface of the recess 960 of the second holder 96, and the lower surface of the gas generator 70.
  • the internal space 90 (sealed space) of the housing 9 includes the first space SP1, the second space SP2, and the third space SP3.
  • the first space SP1, the second space SP2, and the third space SP3 are connected to each other.
  • the first space SP1 includes a portion of the inner surface of the through hole 950 of the first holder 95 above the first conductor 2 (before being broken), an inner surface of the through hole 930 of the third body 93, and a second holder. It is a space surrounded by the inner surface of the recess 960 of 96 and the lower surface of the gas generator 70. That is, the first space SP1 is a space above the first conductor 2 in the internal space 90.
  • the operation pin 8 is arranged in the first space SP1.
  • the second space SP2 is a space surrounded by the inner surface of the through hole 920 of the second body 92 and the inner surface of the recess 910 of the first body 91. That is, the second space SP2 is a space below the second conductor 5 in the internal space 90.
  • the second space SP2 is a space in which the separation portion 23 separated from the terminal portions 21 and 22 and the separation portion 53 separated from the terminal portions 51 and 52 are housed.
  • the third space SP3 is located below the first conductor 2 (before being broken) and above the second conductor 5 (before being broken) on the inner surface of the through hole 950 of the first holder 95. It is a space surrounded. That is, the third space SP3 is a space between the first conductor 2 and the second conductor 5 in the internal space 90.
  • the gas generator 70 is arranged inside the accommodation wall 961.
  • the gas generator 70 generates gas by burning the fuel 74.
  • the gas generator 70 moves the operation pin 8 in conjunction with the pressure of the generated gas.
  • 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 case 71 has an internal space at the lower end thereof.
  • the fuel 74 and the heat generating element 73 are housed in the internal space of the case 71.
  • 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.
  • 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 generates heat when it is energized.
  • the heat generating element 73 is, for example, a nichrome wire, an alloy wire of iron, chromium, and aluminum, or the like.
  • 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 in the internal space 90 of the housing 9.
  • the operation pin 8 is arranged between the gas generator 70 and the separation unit 23.
  • the operation pin 8 has electrical insulation.
  • the operation pin 8 contains, for example, a resin as a material.
  • the operation pin 8 has a first columnar portion 81 and a second columnar portion 82.
  • the first columnar portion 81 is columnar.
  • the first columnar portion 81 is located on the side (lower side) closer to the separation portion 23.
  • the outer diameter of the first columnar portion 81 is substantially equal to the diameter of the through hole 950 of the first holder 95.
  • the second columnar portion 82 is located on the side (upper side) far from the separation portion 23.
  • the second columnar portion 82 is a columnar shape having an outer diameter larger than that of the first columnar portion 81. Therefore, there is a step between the first columnar portion 81 and the second columnar portion 82.
  • the outer diameter of the second columnar portion 82 is substantially equal to the diameter of the inner peripheral surface of the recess 960 of the second holder 96 and the diameter of the through hole 930 of the third body 93.
  • an annular recess is formed on the outer peripheral surface of the second columnar portion 82 of the operation pin 8.
  • An O-ring 65 is arranged in this recess (see FIG. 1). The outer edge of the O-ring 65 is in contact with the inner surface of the recess 960.
  • the operating pin 8 is held in the first space SP1 of the housing 9 by the frictional force between the O-ring 65 and the operating pin 8 and the second holder 96.
  • a recess 84 is formed on the upper surface of the operation pin 8.
  • the operation pin 8 is arranged in the first space SP1 of the housing 9 so that the first surface (upper surface) in the height direction faces the gas generator 70.
  • an airtight space is provided in the housing 9 so as to be surrounded by the recess 84 of the operation pin 8, the lower surface of the gas generator 70, and the inner surface of the recess 960. 75) is formed (see FIG. 1).
  • the height of the operation pin 8 (vertical dimension) is smaller than the vertical dimension of the first space SP1.
  • the operation pin 8 has a gap (hereinafter, also referred to as “gap space SP11”) between the tip of the operation pin 8 in the moving direction (the surface facing the separating portion 23 of the first conductor 2; the lower surface) and the first conductor 2. It is arranged in the first space SP1 of the housing 9 so as to generate (referred to as).
  • the separation portion 23 is located in the internal space 90 of the housing 9. As shown in FIG. 1, in the first conductor 2, the separating portion 23 faces the lower surface of the operation pin 8.
  • the separation portion 53 (the portion between the two narrow portions 54 in the bottom plate portion 501) is located in the internal space 90 of the housing 9. As shown in FIG. 1, in the second conductor 5, the separating portion 53 faces the lower surface of the operation pin 8.
  • the first regulator 41 is arranged in the internal space 90 of the housing 9.
  • the first regulator 41 is arranged in the second space SP2.
  • the first regulator 41 is made of resin here.
  • the first regulator 41 has a disk shape.
  • the outer diameter of the first regulator 41 is larger than the diameter of the recess 910.
  • the outer diameter of the first regulator 41 is substantially equal to the diameter of the groove 911.
  • the first regulator 41 is fitted in the groove 911 and held in the housing 9.
  • the first regulator 41 divides the internal space 90.
  • the first regulator 41 is arranged in the second space SP2, and divides the second space SP2 into a first subspace SP21 and a second subspace SP22.
  • a groove 410 concentric with the outer edge of the first regulator 41 is formed on the surface (upper surface) of the first regulator 41 facing the operation pin 8.
  • the diameter of the groove 410 is substantially equal to the diameter of the recess 910.
  • the first regulator 41 is liable to break in the groove 410 when a force is applied in the thickness direction (vertical direction).
  • the diameter of the groove 410 may be substantially equal to the diameter of the lower surface of the operation pin 8.
  • the second regulator 42 is arranged in the internal space 90 of the housing 9.
  • the second regulator 42 is arranged in the first space SP1.
  • the second regulator 42 is made of resin here.
  • the second regulator 42 has a disk shape.
  • the outer diameter of the second regulator 42 is larger than the diameter of the through hole 950.
  • the second regulator 42 is fitted in the step 953 and is held by the first holder 95.
  • the second restrictor 42 is arranged between the operation pin 8 and the first conductor 2 (separation portion 23).
  • the second regulator 42 divides the internal space 90.
  • the second regulator 42 is arranged in the first space SP1, and the first space SP1 is divided into a gap space SP11 and an arrangement space SP12 in which the operation pin 8 is arranged.
  • a groove 420 concentric with the outer edge of the second regulator 42 is formed on the surface (upper surface) of the second regulator 42 facing the operation pin 8.
  • the diameter of the groove 420 is substantially equal to the diameter of the lower surface of the operating pin 8.
  • the groove 420 faces the outer edge of the lower surface of the operating pin 8.
  • the second regulator 42 is likely to break at the groove 420 when a force is applied in the thickness direction (vertical direction).
  • the cooling body 3 is arranged in the internal space 90 of the housing 9.
  • the cooling body 3 has electrical insulation.
  • the cooling body 3 is arranged between the first regulating body 41 and the second regulating body 42 in the internal space 90.
  • the cooling body 3 is arranged in the first space SP1, the second space SP2, and the third space SP3 in the internal space 90. That is, the cooling bodies 3 are arranged on both sides of the first conductor 2 (separating portion 23) in the thickness direction (vertical direction) in the internal space 90. Further, the cooling bodies 3 are arranged on both sides of the second conductor 5 (separating portion 53) in the thickness direction (vertical direction) in the internal space 90.
  • the cooling body 3 is arranged around the first conductor 2.
  • the cooling body 3 is in contact with the first conductor 2 (separating portion 23). Further, the cooling body 3 is arranged around the second conductor 5.
  • the cooling body 3 is in contact with the second conductor 5 (separating portion 53).
  • the cooling body 3 is arranged in the projection region of the operating pin 8 in the moving direction of the operating pin 8.
  • the cooling body 3 is arranged in the space (gap space SP11) between the second regulating body 42 and the first conductor 2 (separating portion 23). That is, at least a part of the cooling body 3 is arranged between the separation unit 23 and the separation unit 53, whichever is closer to the operation pin 8 (separation unit 23), and the operation pin 8.
  • the cooling body 3 arranged in the gap space SP11 is also referred to as a first cooling body 31.
  • the first cooling body 31 is arranged in the entire gap space SP11.
  • the cooling body 3 is arranged in the space (first subspace SP21) between the first regulating body 41 and the second conductor 5 (separating portion 53). That is, at least a part of the cooling body 3 is arranged at a position farther from the operation pin 8 than any of the separating portion 23 and the separating portion 53.
  • the cooling body 3 arranged in the first subspace SP21 is also referred to as a second cooling body 32.
  • the second cooling body 32 is arranged in the entire first subspace SP21.
  • the cooling body 3 is arranged in the space (third space SP3) between the first conductor 2 (separation part 23) and the second conductor 5 (separation part 53).
  • the cooling body 3 arranged in the third space SP3 is also referred to as a third cooling body 33.
  • the third cooling body 33 is arranged in the entire third space SP3.
  • the cooling body 3 is also arranged in the space between the side surface of the first conductor 2 and the inner peripheral surface of the housing 9.
  • the cooling body 3 is also arranged in the space between the side surface of the second conductor 5 and the inner peripheral surface of the housing 9. That is, the cooling body 3 is arranged (filled) in the entire space between the first regulating body 41 and the second regulating body 42.
  • the cooling body 3 of this embodiment is in the form of particles. That is, the cooling body 3 includes a large number (plurality) of particles 300 that are not bonded to each other.
  • the material of the cooling body 3 contains at least one of a metal oxide and an inorganic oxide.
  • the material of the cooling body 3 is at least one of a metal oxide and an inorganic oxide.
  • the metal oxide used as the material of the cooling body 3 contains, for example, at least one of aluminum oxide, zirconia oxide, and iron oxide.
  • the inorganic oxide used as a material for the cooling body 3 contains, for example, at least one of silicon oxide, zinc oxide, and magnesium oxide.
  • the metal oxide or inorganic oxide used as the material of the cooling body 3 is preferably a substance that does not generate gas even when melted. Note that "does not generate gas even when melted" does not mean that gas is not generated at all even when melted, and the pressure of the internal space 90 is excessively applied (for example, the pressure of the internal space 90 is excessively applied) so as not to affect the performance of the shutoff device 1. A small amount of gas may be generated as long as it does not increase.
  • the material of the cooling body 3 contains aluminum oxide (Al 2 O 3 ) or silicon oxide (SiO 2 ) as a main component.
  • the particles 300 constituting the cooling body 3 are alumina particles.
  • the larger the particle size the larger the gap between the particles 300, but the smaller the surface area of the cooling body 3 as a whole.
  • the smaller the particle size the larger the surface area of the cooling body 3 as a whole, but the smaller the gap between the particles 300.
  • the particle size of the particles 300 is preferably set to an appropriate range that is neither too large nor too small.
  • the particle size of the particles 300 constituting the cooling body 3 is, for example, about 0.3 to 1 mm.
  • the particle size here is an average value, but may be an intermediate value.
  • the particles 300 constituting the cooling body 3 are not limited to a spherical shape, and may be an amorphous shape.
  • the materials of the first cooling body 31, the second cooling body 32, and the third cooling body 33 may be the same or different from each other.
  • the first cooling body 31, the second cooling body 32, and the third cooling body 33 are formed of the same material (aluminum oxide).
  • the first cooling body 31, the second cooling body 32, and the third cooling body 33 may have the same or different particle size (average particle size) of the particles 300.
  • the particle sizes of the first cooling body 31 and the third cooling body 33 are the same.
  • the particle size of the particles 300 of the first cooling body 31 (and the third cooling body 33) is smaller than that of the second cooling body 32. That is, the particle size of the cooling body 3 is accommodated by the particles (first cooling body 31) arranged in the gap (gap space SP11) and the particles (third cooling body 33) arranged in the third space SP3. It is smaller than the particles (second cooling body 32) arranged in the space SP20.
  • the range in which the cooling body 3 can be moved in the vertical direction is defined by the first regulating body 41 and the second regulating body 42. That is, the cooling body 3 is restricted from moving in the vertical direction by the first regulating body 41 and the second regulating body 42.
  • the blocking device 1 is provided separately from the first conductor 2 and the second conductor 5 by dividing the internal space 90 of the housing 9, and restricts the movement of the cooling body 3 in the moving direction of the operation pin 8. It is provided with a regulator (first regulator 41, second regulator 42).
  • the cushion portion 97 is arranged in the first space SP1 in the internal space 90 of the housing 9.
  • the cushion portion 97 has an annular shape.
  • the cushion portion 97 is arranged so as to surround the circumference of the first columnar portion 81 of the operation pin 8 in the through hole 930.
  • the cushion portion 97 is made of, for example, resin.
  • the cushion portion 97 is preferably softer than the rib 932 of the third body 93.
  • the terminal portions 21 and 22 have the first path (the path including the separation section 23) and the second path (the separation section). It is electrically connected via a parallel circuit (path including 53). Therefore, the first conductor 2 and the second conductor 5 function as electric circuits, and the first conductor 2 and the second conductor 5 are supplied to the first conductor 2 and the second conductor 5 from an external electric circuit electrically connected to the terminal portions 21 and 22.
  • the current that is generated flows.
  • the electric resistance of the first path is sufficiently smaller than the electric resistance of the second electric line. Therefore, when viewed in a parallel circuit of the first path and the second path, almost all the current flows through the first path, and almost no current flows in the second path.
  • the gas generator 70 When the control unit of the electric vehicle or the like energizes between the two pin electrodes 72, the gas generator 70 is driven and the heat generating element 73 connected to the pin electrodes 72 generates heat.
  • the heat generated by the heat generating element 73 ignites the fuel 74, and the fuel 74 burns to generate gas.
  • the gas increases the pressure in the internal space accommodating the fuel 74 in the case 71, breaks the wall (lower wall) constituting the internal space, and is introduced into the pressurizing chamber 75 through the broken portion to be introduced into the pressurizing chamber 75. Increase the pressure within 75. Due to the pressure of the gas in the pressurizing chamber 75, a force acting in the direction (downward) toward the separation portion 23 acts on the operation pin 8.
  • the operation pin 8 is driven against the frictional force of the O-ring 65 and moves downward (movement direction), and the lower surface of the operation pin 8 pushes the second regulator 42 downward.
  • the second regulator 42 pushed by the operating pin 8 is broken in the groove 420 (see FIG. 7).
  • the first cooling body 31 moves in the moving direction (downward) of the operation pin 8 by being pushed by the operation pin 8 via the second regulator 42.
  • the cooling body 3 moves in the moving direction of the operating pin 8 in conjunction with the movement of the operating pin 8.
  • the operation pin 8 moves downward and pushes the separating portion 23 of the first conductor 2 (via the second regulating body 42 and the first cooling body 31) from above.
  • the separation portion 23 is pushed by the operation pin 8, as shown in FIG. 7, the first conductor 2 has a groove 24 of a boundary portion 240 between one terminal portion 21 and the separation portion 23, and the other terminal portion. It is broken in the groove 24 of the boundary portion 240 between the 22 and the separating portion 23. As a result, the separation unit 23 is separated from the terminal units 21 and 22, and the first path is cut off.
  • the separation unit 23 starts separation, the separation unit 53 is connected to the terminal units 51 and 52. That is, when the separation portion 23 starts the separation, the terminal portions 51 and 52 of the second conductor 5 are conducting with each other.
  • the operating pin 8 moves further downward, it is pushed by the operating pin 8 via the second regulating body 42, the first cooling body 31 and the separating portion 23, so that the third cooling body 33 moves in the moving direction of the operating pin 8. Move to (down). In short, the cooling body 3 (third cooling body 33) moves in the moving direction of the operating pin 8 in conjunction with the movement of the operating pin 8.
  • the operating pin 8 moves downward, the operating pin 8 moves to the separating portion of the second conductor 5 (via the second regulator 42, the first cooling body 31, the separating portion 23, and the third cooling body 33).
  • Push 53 from above When the separation portion 53 is pushed by the operation pin 8, as shown in FIG. 8, the second conductor 5 has a narrow portion 54 between one terminal portion 51 and the separation portion 53, and the other terminal portion. It is broken at the narrow portion 54 between the 52 and the separation portion 53. As a result, the separation unit 53 is separated from the terminal units 51 and 52, and the second path is cut off.
  • an arc may be generated between the separated portions in the second conductor 5.
  • the arc can be generated, for example, so as to connect the terminal portion 51 and the separation portion 53, or to connect the terminal portion 52 and the separation portion 53.
  • FIG. 8 the arc A1 generated between one terminal portion 51 and the separation portion 53 and the arc A2 generated between the other terminal portion 52 and the separation portion 53 are schematically shown by dotted lines. is there.
  • the third cooling body 33 exists between the separating portion 23 and the separating portion 53. Therefore, the arcs A1 and A2 can pass through the gap of the third cooling body 33 and come into contact with the third cooling body 33.
  • the arcs A1 and A2 in contact with the third cooling body 33 are cooled by absorbing heat by the third cooling body 33. As a result, the extinguishing of the arcs A1 and A2 is promoted.
  • the second cooling body 32 exists in the first subspace SP21 of the second space SP2.
  • a part of the arcs A1 and A2 can wrap around to the second cooling body 32 side and come into contact with the second cooling body 32.
  • the arcs A1 and A2 in contact with the second cooling body 32 are cooled by absorbing heat by the second cooling body 32. As a result, the extinguishing of the arcs A1 and A2 is promoted.
  • the first cooling body 31 exists between the operating pin 8 and the separating portion 23.
  • the first cooling body 31 is also pushed by the operating pin 8 and moves downward, and the first cooling body 31 may come into contact with the arcs A1 and A2.
  • the arcs A1 and A2 in contact with the first cooling body 31 are cooled by absorbing heat by the first cooling body 31. As a result, the extinguishing of the arcs A1 and A2 is promoted.
  • the cooling body 3 cools the arcs A1 and A2 generated when the separating portion 53 is separated from the terminal portions 51 and 52 while the current is flowing through the second conductor 5. As a result, the extinguishing of the arcs A1 and A2 is promoted.
  • the operation pin 8 moves downward, it is pushed by the operation pin 8 via the second regulator 42, the first cooling body 31, the separation unit 23, the third cooling body 33, and the separation unit 53, so that the second cooling is performed.
  • the body 32 moves in the moving direction (downward) of the operation pin 8.
  • the cooling body 3 (second cooling body 32) moves in the moving direction of the operating pin 8 in conjunction with the movement of the operating pin 8.
  • the operating pin 8 moves downward, the operating pin 8 passes through (the second regulator 42, the first cooling body 31, the separating unit 23, the third cooling body 33, the separating unit 53, and the second cooling body 32). Push the first regulator 41 downward. The first regulator 41 pushed by the operation pin 8 is broken in the groove 410.
  • the operation pin 8 moves further downward, and the lower surface of the second columnar portion 82 comes into contact with the upper surface of the rib 932 via the cushion portion 97 to stop the movement (see FIG. 9). That is, the operation pin 8 is restricted from being excessively moved by the housing 9.
  • the housing 9 is provided with a regulating portion for restricting excessive movement of the operating pin 8 in the space (first space SP1) accommodating the operating pin 8.
  • the first columnar portion 81 of the operation pin 8 is interposed between the two terminal portions 21 and 22 of the first conductor 2. Further, a first columnar portion 81 of the operation pin 8 is interposed between the two terminal portions 51 and 52 of the second conductor 5. That is, the electric circuit between the terminal portions 21 and 22 is electrically insulated by the operation pin 8 (first columnar portion 81).
  • the second regulator 42, the separator 23, the separator 53, and the first regulator 41 are housed in the second space SP2 in the internal space 90 of the housing 9 (see FIG. 9).
  • the cooling bodies 3 (first cooling body 31, second cooling body 32, and third cooling body 33) are in the form of particles, and are mixed and housed in the second space SP2. Therefore, in FIG. 9, the illustration of the cooling body 3 is omitted.
  • the separation portion 23 of the first conductor 2 when the voltage applied between the terminal portions 21 and 22 is large, when the separation portion 23 of the first conductor 2 is separated from the terminal portions 21 and 22, an arc is generated between the separated portions. May be done.
  • the arc can be generated, for example, so as to connect one terminal portion 21 and the separation portion 23, and to connect the other terminal portion 22 and the separation portion 23.
  • the first cooling body 31 exists between the operating pin 8 and the separating portion 23. Therefore, the arc can pass through the gap of the first cooling body 31 and come into contact with the first cooling body 31.
  • the arc that comes into contact with the first cooling body 31 is cooled by absorbing heat by the first cooling body 31. This promotes the extinguishing of the arc.
  • the blocking device 1 of the present embodiment includes a second conductor 5 connected in parallel with the first conductor 2. Then, the first conductor 2 is first broken (the first path is cut off) by the operation pin 8, and then the second conductor 5 is broken (the second path is cut off). Therefore, the breaking device 1 of the present embodiment has a smaller current flowing through the electric circuit when the electric circuit is cut off than, for example, a breaking device not provided with the second conductor 5. Therefore, the breaking device 1 can suppress the generation of an arc as compared with a breaking device that does not include, for example, the second conductor 5.
  • the cooling body 3 is arranged in the projection region of the operating pin 8 in the moving direction of the operating pin 8. Therefore, even if an arc is generated in the internal space 90, the cooling body 3 can easily come into contact with the arc, and the arc can be extinguished.
  • the cooling body 3 is in the form of particles, the surface area of the cooling body 3 can be increased, the arc can easily come into contact with the cooling body 3, and the arc extinguishing can be further promoted. It will be possible.
  • the cooling body 3 is arranged in the second space SP2 (more specifically, the first subspace SP21) and the third space SP3, but the first space SP1 (more specifically, the first space SP1). It is not arranged in the gap space SP11). That is, the cooling body 3 includes the second cooling body 32 and the third cooling body 33, but does not include the first cooling body 31 (see FIG. 6).
  • the blocking device 1A includes a third regulator 43 instead of the second regulator 42.
  • a step 953 of the through hole 950 (not shown in FIG. 10) is formed directly above the through hole 954, and the third regulator 43 is fitted into the step 953 to form the third regulator 43. It is held in the housing 9.
  • the lower surface of the third regulator 43 may be in contact with the upper surface of the first conductor 2 (separation portion 23).
  • the lower end of the operation pin 8A is fitted into the through hole 950 (the operation pin 8A has a length such that the lower end is fitted into the through hole 950).
  • the cooling body 3 (the second cooling body 32 and the third cooling body 33) can promote the extinguishing of the arc as in the breaking device 1. Further, by omitting the first cooling body 31, it is possible to simplify the configuration and reduce the manufacturing cost.
  • the third regulator 43 may be arranged so as to be in contact with the lower surface of the first conductor 2, that is, between the cooling body 3 (third cooling body 33) and the first conductor 2. Further, the third regulator 43 may be omitted.
  • the cooling body 3 is arranged in the first space SP1 (more specifically, the gap space SP11) and the third space SP3, but the second space SP2 (first space SP2). It is not arranged in the subspace SP21). That is, the cooling body 3 includes the first cooling body 31 and the third cooling body 33, but does not include the second cooling body 32 (see FIG. 6).
  • the blocking device 1B includes a fourth regulatory body 44 instead of the first regulatory body 41.
  • the fourth regulator 44 is fitted into an annular groove formed in the bottom surface of the recess 921 of the second body 92 of the housing 9, and together with the bottom plate portion 501 of the second conductor 5, the second body 92 and the first holder. It is held in the housing 9 by being sandwiched between the 95 and the 95.
  • the fourth regulator 44 restricts the movement of the third cooling body 33 in the moving direction of the operating pin 8.
  • the upper surface of the fourth regulator 44 may be in contact with the lower surface of the second conductor 5 (separation portion 53).
  • the cooling body 3 (the first cooling body 31 and the third cooling body 33) can promote the extinguishing of the arc as in the breaking device 1. Further, by omitting the second cooling body 32, it is possible to simplify the configuration and reduce the manufacturing cost.
  • the fourth regulator 44 may be arranged so as to be in contact with the upper surface of the second conductor 5, that is, between the third cooling body 33 and the second conductor 5 (separation portion 53).
  • the cooling body 3 is arranged in the first space SP1 (more specifically, the gap space SP11) and the second space SP2 (more specifically, the first subspace SP21). However, it is not arranged in the third space SP3. Therefore, the third space SP3 is blank. That is, the cooling body 3 includes the first cooling body 31 and the second cooling body 32, but does not include the third cooling body 33 (see FIG. 6).
  • the blocking device 1B further includes a third regulatory body 43 and a fourth regulatory body 44.
  • the third regulator 43 may be formed at the same time (for example, by two-color molding) when the first holder 95 is molded, for example.
  • the cooling body 3 (the first cooling body 31 and the second cooling body 32) can promote the extinguishing of the arc as in the breaking device 1. Further, by omitting the third cooling body 33, it is possible to simplify the configuration and reduce the manufacturing cost.
  • the cooling body 3 has a porous body.
  • the porous body constituting the cooling body 3 is composed of at least one of a metal oxide and an inorganic oxide.
  • the porous body may be one member having a large number of fine holes, or one or more members arranged so as to form a gap between itself or another member (the member itself is a hole). It may or may not have).
  • the porous body in the blocking device 1D of this modified example is a collection of fibrous members 301. That is, in the blocking device 1D of the present modification, the cooling body 3 has the fibrous member 301.
  • the fibrous member 301 may further include one or more side chain portions branched from a string-like portion serving as a skeleton.
  • the cooling body 3 is deformable (compressed) because the cooling body 3 includes a fibrous member 301 forming a gap between the cooling bodies 3.
  • the blocking device 1D of this modified example does not include the first restricting body 41, and the second cooling body 32 is arranged in the entire second space SP2 (see FIG. 5).
  • the blocking device 1D of this modified example when the operating pin 8 moves downward, the cooling body 3 is compressed by being pushed directly or indirectly by the operating pin 8. Therefore, a space (second subspace SP22: see FIG. 5) for accommodating the moved cooling body 3 as in the blocking device 1 of the basic example is unnecessary. Therefore, according to the blocking device 1D of the present modification, the manufacturing process can be simplified.
  • breaking device 1D of this modified example it is possible to promote the extinguishing of the arc by the cooling body 3 (first cooling body 31, second cooling body 32, third cooling body 33) as in the breaking device 1. Become.
  • the blocking device 1D of this modification may also be provided with the first regulator 41, the third regulator 43, the fourth regulator 44, and the like.
  • the blocking device 1 includes only one of the first cooling body 31, the second cooling body 32, and the third cooling body 33 as the cooling body 3. You may. However, from the viewpoint of promoting the extinguishing of the arcs A1 and A2, the blocking device 1 is provided with the cooling bodies 3 on both sides of the second conductor 5, that is, the second cooling body 32 and the first cooling body. It is preferable to include at least one of 31 and the third cooling body 33.
  • the first cooling body 31 does not have to be arranged in the entire gap space SP11.
  • the second cooling body 32 may not be arranged in the entire first subspace SP21.
  • the third cooling body 33 does not have to be arranged in the entire third space SP3.
  • the cooling body 3 may have both a plurality of particles 300 that are not bonded to each other and a porous body (fibrous member 301).
  • the operation pins 8 and 8A may be composed of a plurality of members.
  • the first columnar portion 81 and the second columnar portion 82 may be composed of different members formed of different materials.
  • portions that do not face the first conductor 2 and the second conductor 5 terminal portions 21 and 22, terminal portions 51 and 52) after the movement of the operation pins 8 and 8A, for example, the second columnar portion 82. Does not have to have electrical insulation.
  • the shapes of the operation pins 8 and 8A are not limited to the illustrated shapes, and may be, for example, any polygonal columnar shape.
  • the diameter of the groove 24 and the diameter of the operation pins 8 and 8A may be smaller than the diameter of the through hole 950 of the first holder 95. That is, the entire boundary portion 240 (the portion broken in the first conductor 2) in the first conductor 2 is located in the internal space 90 of the housing 9, and a part of the terminal portion 21 (the end on the separation portion 23 side). The portion) and a part of the terminal portion 22 (the end portion on the separation portion 23 side) may also be located in the internal space 90. Similarly, the entire narrow portion 54 (the portion broken in the second conductor 5) in the second conductor 5 is located in the internal space 90 of the housing 9, and a part of the terminal portion 51 (separation portion 53 side). (End portion) and a part of the terminal portion 52 (end portion on the separation portion 53 side) may also be located in the internal space 90.
  • the cooling body 3 does not have to be in contact with the first conductor 2 and the second conductor 5.
  • the groove 24 may be formed on the second surface F2 in place of or in addition to the first surface F1 of the first conductor 2.
  • the blocking devices 1, 1A to 1D may be provided with a permanent magnet for extending the generated arc.
  • the permanent magnet may be arranged in the space inside the housing 9, or may be embedded in the housing 9, for example.
  • terminal portions 21 and 22 and the separation portion 23 do not have to be integral members. In one modification, the terminal portions 51, 52 and the separation portion 53 do not have to be integral members.
  • an additional cooling body may be arranged in a region other than the projection region of the operating pins 8 and 8A.
  • the cooling body may be arranged in a recess formed in the inner wall surface of the second space SP2 of the housing 9.
  • the density (filling rate) of the cooling body 3 can be appropriately set so as not to interfere with the operation of the operating pin 8.
  • the separation unit 53 may be separated from the terminals 51 and 52 before the separation unit 23 is separated from the terminals 21 and 22.
  • the operation pin 8, the separation unit 53, and the separation unit 23 may be arranged in this order. It should be noted that the path passing through the separation section (in this case, the separation section 53) separated first has a smaller electrical resistance than the path passing through the separation section (in this case, the separation section 23) separated later. preferable.
  • the housing 9 may be provided with an appropriate additional O-ring (eg, an O-ring located between the first body 91 and the second body 92) to seal the interior space 90. Good.
  • an appropriate additional O-ring eg, an O-ring located between the first body 91 and the second body 92
  • shutoff device 1 (1A to 1D) is a gas generator 70 that generates gas, a housing 9 having an internal space 90, and a first portion of the internal space 90 that is at least partially arranged and connected to an external electric circuit.
  • the first conductor 2 and the second conductor 5 which is arranged at least a part in the internal space 90 and is connected in parallel with the first conductor 2 and the first conductor 2 and the second conductor 5 which are arranged in the internal space 90.
  • An operation pin 8 (8A) provided above the conductor 5 and moving toward the first conductor 2 and the second conductor 5 by the pressure of the gas generated by the gas generator 70, and arranged in the internal space 90.
  • a cooling body 3 for cooling an arc generated in the internal space 90 is provided.
  • the first conductor 2 is housed in the terminal portion 21 connected to the external electric circuit, the terminal portion 22 connected to the external electric circuit, and the internal space 90 of the housing 9, and connects the terminal portion 21 and the terminal portion 22. It has a separation unit 23, and the separation unit 23 is separated from the terminal unit 21 or the terminal unit 22 by the movement of the operation pin 8 (8A).
  • the second conductor 5 is provided in the terminal portion 51 connected to the terminal portion 21 of the first conductor 2, the terminal portion 52 connected to the terminal portion 22 of the first conductor 2, and the internal space 90 of the housing 9. It has a separating portion 53 that is accommodated and connects the terminal portion 51 and the terminal portion 52, and the separating portion 53 is separated from the terminal portion 51 or the terminal portion 52 by the movement of the operation pin 8 (8A).
  • the separation unit 23 and the separation unit 53 are located below the operation pin 8, and the cooling body 3 is provided below the operation pin 8.
  • At least a part of the cooling body 3 is provided between the separating unit 23 and the separating unit 53.
  • the separation unit 23 is located above the separation unit 53, and at least a part of the cooling body 3 (first cooling body 31) is the operation pin 8 and the separation unit 23. It is provided between and.
  • At least a part of the cooling body 3 is provided below the separating portion 23 and the separating portion 53.
  • the operation pin 8 (8A), the separating portion (23), and the separating portion (53) are arranged in this order from the upper side to the lower side.
  • the terminal portion 21 and the terminal portion 22 are conducted via the second conductor 5. ..
  • the magnitude of the current flowing between the terminal portion 21 and the terminal portion 22 can be reduced, and the arc in the internal space 90 can be reduced. Can be suppressed.
  • one end of the terminal portion 51 of the second conductor 5 is connected to the first portion of the terminal portion 21 of the first conductor 2, and the second conductor is connected.
  • One end of the terminal portion 52 of 5 is connected to the second portion of the terminal portion 22 of the first conductor 2.
  • the separating portion 23 is connected to both the terminal portion 21 and the terminal portion 22, and the separating portion 53 is connected to both the terminal portion 51 and the terminal portion 52, the first portion and the first portion in the first conductor 2 are connected.
  • the electrical resistance between the two portions is smaller than the electrical resistance between one end of the terminal portion 51 of the second conductor 5 and one end of the terminal portion 52.
  • the blocking device 1 (1A to 1D) of another aspect further includes a first regulator 41 that separates the internal space 90 and a second regulator 42 that separates the internal space.
  • the internal space 90 includes the first space SP1, the second space SP2, and the third space SP3, and is arranged in the order of the first space SP1, the third space SP3, and the second space SP2 from the upper side to the lower side.
  • the first regulator 41 is arranged in the second space SP2 so as to separate the second space SP2, and the second regulator 42 is arranged in the first space SP1 so as to separate the first space SP1.
  • a separation unit 23, a separation unit 53, and a cooling body 3 are provided between the regulation body 41 and the second regulation body 42, and the operation pin 8 (8A) is arranged above the second regulation body 42. ..
  • the cooling body 3 has a plurality of particles 300.
  • the surface area of the cooling body 3 can be increased, the arc can easily come into contact with the cooling body 3, and the arc extinguishing can be promoted.
  • the cooling body 3 has a porous body.
  • the surface area of the cooling body 3 can be increased, the arc can easily come into contact with the cooling body 3, and the arc extinguishing can be promoted.
  • the cooling body 3 has a fibrous member 301.
  • the surface area of the cooling body 3 can be increased, the arc can easily come into contact with the cooling body 3, and the arc extinguishing can be promoted.
  • the cooling body 3 can be easily deformed or compressed.
  • 1,1A to 1D blocking device 2 1st conductor 21 and 22 terminal part 23 separation part 24 groove 240 boundary part 3 cooling body 31 1st cooling body 32 2nd cooling body 33 3rd cooling body 300 particles 301 fibrous member 41 1st regulator (regulator) 42 Second regulatory body (regulatory body) 43 Third regulatory body (regulatory body) 44 Fourth Regulator (Regulator) 5 Second conductor 501 Bottom plate 51, 52 Terminal 53 Separation 54 Narrow 510 First end 520 Second end 70 Gas generator 74 Fuel 8,8A Operating pin 9 Housing 90 Internal space 95 First holder 96th 2 holder SP1 1st space SP2 2nd space SP3 3rd space

Abstract

The present invention comprises: a gas generator for generating gas; a housing having an internal space; a first conductor, at least a portion of which is disposed in the internal space, and which is connected to an external electric path; a second conductor, at least a portion of which is disposed in the internal space, and which is connected in parallel to the first conductor; an operation pin which is disposed in the internal space, is provided above the first conductor and the second conductor, and moves toward the first conductor and the second conductor due to the pressure of the gas generated by the gas generator; and a cooling body which is disposed in the internal space and cools an arc generated in the internal space. A separation part of the first conductor and a separation part of the second conductor are positioned below the operation pin, and the cooling body is provided below the operation pin.

Description

遮断装置Breaker
　本開示は遮断装置に関し、より詳細には、電路を遮断する遮断装置に関する。 The present disclosure relates to a breaking device, and more specifically, to a breaking device that cuts off an electric circuit.
　特許文献１記載の回路遮断器は、電気回路に接続されるように設計された少なくとも１つの導電体と、ハウジングと、マトリクスと、パンチと、火工品を用いたアクチュエータと、を備えている。アクチュエータは、点火されたときにパンチを第１の位置から第２の位置に移動させるように設計されている。パンチ及びマトリクスは、パンチが第１の位置から第２の位置に移動するときに、少なくとも１つの導電体を破断して、少なくとも２つの別個の部分にする。 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.
特表２０１７－５０７４６９号公報Special Table 2017-507469
　特許文献１に記載されている回路遮断器のような遮断装置では、導電体に大電流が流れているときに導電体を破断すると、破断した箇所でアークが発生することがある。 In a circuit breaker such as the circuit breaker described in Patent Document 1, if the conductor is broken while a large current is flowing through the conductor, an arc may be generated at the broken part.
　本開示の一態様に係る遮断装置は、ガスを発生させるガス発生器と、内部空間を有するハウジングと、前記内部空間に少なくとも一部が配置され、外部電路に接続される第１導電体と、前記内部空間に少なくとも一部が配置され、前記第１導電体と並列に接続される第２導電体と、前記内部空間に配置され、前記第１導電体および前記第２導電体の上方に設けられ、前記ガス発生器で発生した前記ガスの圧力により前記第１導電体および前記第２導電体に向かって移動する動作ピンと、前記内部空間に配置され、前記内部空間で発生するアークを冷却する冷却体と、を備え、前記第１導電体は、前記外部電路に接続される第１端子部と、前記外部電路に接続される第２端子部と、前記ハウジングの前記内部空間に収容され、前記第１端子部と前記第２端子部とを接続する第１分離部と、を有し、前記動作ピンの移動によって、前記第１分離部は、前記第１端子部または前記第２端子部から切り離され、前記第２導電体は、前記第１導電体の前記第１端子部に接続される第３端子部と、前記第１導電体の前記第２端子部に接続される第４端子部と、前記ハウジングの前記内部空間に収容され、前記第３端子部と前記第４端子部とを接続する第２分離部と、を有し、前記動作ピンの移動によって、前記第２分離部は、前記第３端子部または前記第４端子部から切り離され、前記第１分離部及び前記第２分離部は、前記動作ピンの下方に位置し、前記冷却体は、前記動作ピンの下方に設けられている。 The blocking device according to one aspect of the present disclosure includes a gas generator that generates gas, a housing having an internal space, and a first conductor that is at least partially arranged in the internal space and connected to an external electric path. A second conductor, which is at least partially arranged in the internal space and is connected in parallel with the first conductor, and a second conductor which is arranged in the internal space and is provided above the first conductor and the second conductor. The operation pins that move toward the first conductor and the second conductor by the pressure of the gas generated by the gas generator, and the arcs that are arranged in the internal space and generated in the internal space are cooled. A cooling body is provided, and the first conductor is housed in the first terminal portion connected to the external electric circuit, the second terminal portion connected to the external electric path, and the internal space of the housing. It has a first separation part that connects the first terminal part and the second terminal part, and by moving the operation pin, the first separation part becomes the first terminal part or the second terminal part. The second conductor is separated from the third terminal portion connected to the first terminal portion of the first conductor, and the fourth terminal portion connected to the second terminal portion of the first conductor. It has a portion and a second separation portion that is housed in the internal space of the housing and connects the third terminal portion and the fourth terminal portion, and the second separation portion is formed by moving the operation pin. Is separated from the third terminal portion or the fourth terminal portion, the first separation portion and the second separation portion are located below the operation pin, and the cooling body is below the operation pin. It is provided.
図１は、一実施形態の遮断装置の断面斜視図である。FIG. 1 is a cross-sectional perspective view of the blocking device of one embodiment. 図２は、同上の遮断装置の斜視図である。FIG. 2 is a perspective view of the blocking device of the same. 図３は、同上の遮断装置の要部の斜視図である。FIG. 3 is a perspective view of a main part of the above-mentioned breaking device. 図４は、同上の遮断装置の要部の斜視図である。FIG. 4 is a perspective view of a main part of the above-mentioned breaking device. 図５は、同上の遮断装置の一部の部材を取り除いた状態の断面斜視図である。FIG. 5 is a cross-sectional perspective view showing a state in which a part of the member of the blocking device is removed. 図６は、同上の遮断装置の断面図であって、動作ピンが駆動される前の状態を示す図である。FIG. 6 is a cross-sectional view of the breaking device of the same as above, showing a state before the operation pin is driven. 図７は、同上の遮断装置の断面図であって、動作ピンが駆動された直後の状態を示す図である。FIG. 7 is a cross-sectional view of the breaking device of the same as above, showing a state immediately after the operation pin is driven. 図８は、同上の遮断装置の断面図であって、動作ピンが駆動された後の状態を示す図である。FIG. 8 is a cross-sectional view of the breaking device of the same as above, and is a view showing a state after the operation pin is driven. 図９は、同上の遮断装置の断面図であって、動作ピンの移動が完了した状態を示す図である。FIG. 9 is a cross-sectional view of the breaking device of the same as above, showing a state in which the movement of the operation pin is completed. 図１０は、変形例１の遮断装置の断面図である。FIG. 10 is a cross-sectional view of the blocking device of the first modification. 図１１は、変形例２の遮断装置の断面図である。FIG. 11 is a cross-sectional view of the blocking device of the second modification. 図１２は、変形例３の遮断装置の断面図である。FIG. 12 is a cross-sectional view of the blocking device of the modified example 3. 図１３は、変形例４の遮断装置の断面図である。FIG. 13 is a cross-sectional view of the blocking device of the modified example 4.
　以下、本開示の実施形態に係る遮断装置について、添付の図面を参照して説明する。ただし、下記の各実施形態は、本開示の様々な実施形態の一部に過ぎない。下記の各実施形態は、本開示の目的を達成できれば、設計等に応じて種々の変更が可能である。また、下記の各実施形態において説明する各図は、模式的な図であり、図中の各構成要素の大きさ及び厚さそれぞれの比が必ずしも実際の寸法比を反映しているとは限らない。 Hereinafter, the blocking device according to the embodiment of the present disclosure will be described with reference to the attached drawings. However, each of the following embodiments is only 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. Further, 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 always reflect the actual dimensional ratio. Absent.
　なお、本開示では、「上」、「下」、「上方」、「下方」等の方向を示す用語を用いて説明するが、これらは相対的な位置関係を示しているだけであり、それにより本開示が限定されるものではない。 In this disclosure, terms indicating directions such as "upper", "lower", "upper", and "lower" are used, but these only indicate relative positional relationships. Does not limit this disclosure.
　（１）実施形態
　（１．１）概要
　本実施形態の遮断装置１は、図１に示すように、第１導電体２と、第２導電体５と、冷却体３と、ガス発生器７０と、動作ピン８と、ハウジング９と、を備える。 (1) Outline of the embodiment (1.1) The shutoff device 1 of the present embodiment has a first conductor 2, a second conductor 5, a cooling body 3, and a gas generator 70, as shown in FIG. The operation pin 8 and the housing 9 are provided.
　第１導電体２は、外部電路に接続される。第１導電体２は、端子部２１，２２、及び分離部２３を有する。端子部２１，２２は、第１導電体２において、外部電路に接続される部分である。分離部２３は、第１導電体２において、端子部２１，２２をつなぐ部分である。 The first conductor 2 is connected to an external electric circuit. The first conductor 2 has terminal portions 21 and 22, and a separation portion 23. The terminal portions 21 and 22 are portions of the first conductor 2 that are connected to an external electric circuit. The separation portion 23 is a portion of the first conductor 2 that connects the terminal portions 21 and 22.
　第２導電体５は、第１導電体２と並列に接続される。第２導電体５は、端子部５１，５２、及び分離部５３を有する。端子部５１，５２は、第２導電体５において、第１導電体２に接続される部分である。分離部５３は、第２導電体５において、端子部５１，５２をつなぐ部分である。 The second conductor 5 is connected in parallel with the first conductor 2. The second conductor 5 has terminal portions 51 and 52 and a separation portion 53. The terminal portions 51 and 52 are portions of the second conductor 5 that are connected to the first conductor 2. The separation portion 53 is a portion of the second conductor 5 that connects the terminal portions 51 and 52.
　図３に示すように、第２導電体５は、第１端５１０及び第２端５２０を有している。第１端５１０は、端子部５１，５２のうちの一方の端子部５１において、対応する端子部２１と接続される端部である。第２端５２０は、端子部５１，５２のうちの他方の端子部５２において、対応する端子部２２と接続される端部である。 As shown in FIG. 3, the second conductor 5 has a first end 510 and a second end 520. The first end 510 is an end portion of one of the terminal portions 51 and 52 that is connected to the corresponding terminal portion 21. The second end 520 is an end portion of the other terminal portion 52 of the terminal portions 51 and 52 that is connected to the corresponding terminal portion 22.
　図１に示すように、ハウジング９は、内部空間９０を有する。第１導電体２の分離部２３、及び第２導電体５の分離部５３は、内部空間９０に収容されている。 As shown in FIG. 1, the housing 9 has an internal space 90. The separating portion 23 of the first conductor 2 and the separating portion 53 of the second conductor 5 are housed in the internal space 90.
　ガス発生器７０は、燃料７４の燃焼によりガスを発生させる。 The gas generator 70 generates gas by burning the fuel 74.
　動作ピン８は、ハウジング９の内部空間９０に配置される。動作ピン８は、ガス発生器７０で発生したガスの圧力により駆動されて、移動方向（図１の下方）に移動する。 The operation pin 8 is arranged in the internal space 90 of the housing 9. The operation pin 8 is driven by the pressure of the gas generated by the gas generator 70 and moves in the moving direction (lower part of FIG. 1).
　分離部２３及び分離部５３は、動作ピン８の移動方向において動作ピン８の投影領域に位置している。言い換えれば、分離部２３及び分離部５３は、動作ピン８の下方に位置する。本実施形態では、分離部５３は、分離部２３よりも動作ピン８から離れている。すなわち、動作ピン８、分離部２３、及び分離部５３は、動作ピン８の移動方向において、この順に並んでいる。 The separation unit 23 and the separation unit 53 are located in the projection region of the operation pin 8 in the moving direction of the operation pin 8. In other words, the separation unit 23 and the separation unit 53 are located below the operation pin 8. In the present embodiment, the separation unit 53 is separated from the operation pin 8 by the separation unit 23. That is, the operation pin 8, the separation unit 23, and the separation unit 53 are arranged in this order in the moving direction of the operation pin 8.
　図７に示すように、分離部２３は、動作ピン８の移動により、端子部２１，２２のうちの少なくとも一方（ここでは両方）から分離される。また、図８に示すように、分離部５３は、動作ピン８の移動により、端子部５１，５２のうちの少なくとも一方（ここでは両方）から分離される。 As shown in FIG. 7, the separation unit 23 is separated from at least one (here, both) of the terminal units 21 and 22 by the movement of the operation pin 8. Further, as shown in FIG. 8, the separation unit 53 is separated from at least one (here, both) of the terminal units 51 and 52 by the movement of the operation pin 8.
　図１に示すように、冷却体３は、ハウジング９の内部空間９０に配置される。冷却体３は、動作ピン８の移動方向において動作ピン８の投影領域に配置されている。言い換えれば、冷却体３は、動作ピン８の下方に位置する。冷却体３は、内部空間９０で発生するアークを冷却する。 As shown in FIG. 1, the cooling body 3 is arranged in the internal space 90 of the housing 9. The cooling body 3 is arranged in the projection region of the operating pin 8 in the moving direction of the operating pin 8. In other words, the cooling body 3 is located below the operating pin 8. The cooling body 3 cools the arc generated in the internal space 90.
　遮断装置１では、動作ピン８が駆動される前（図６参照）において、端子部２１，２２間に電圧が印加されると、第１導電体２の分離部２３を通る経路（第１経路）と第２導電体５の分離部５３を通る経路（第２経路）との並列回路に、電流が流れる。 In the blocking device 1, when a voltage is applied between the terminal portions 21 and 22 before the operation pin 8 is driven (see FIG. 6), the path (first path) passes through the separation portion 23 of the first conductor 2. ) And the path (second path) passing through the separation portion 53 of the second conductor 5, a current flows through the parallel circuit.
　遮断装置１では、動作ピン８が駆動されると、分離部２３が端子部２１，２２から分離される（図７参照）。これにより、第１経路が遮断されて第２経路のみに電流が流れるようになる（転流）。 In the shutoff device 1, when the operation pin 8 is driven, the separation unit 23 is separated from the terminal units 21 and 22 (see FIG. 7). As a result, the first path is cut off and current flows only in the second path (commutation).
　遮断装置１では、動作ピン８の移動によって、さらに、分離部５３が端子部５１，５２から分離される（図８参照）。これにより、第２経路が遮断される。このとき、分離部５３が端子部５１，５２から分離される箇所で、アークＡ１，Ａ２が発生する場合がある。 In the blocking device 1, the separation unit 53 is further separated from the terminal units 51 and 52 by the movement of the operation pin 8 (see FIG. 8). As a result, the second path is blocked. At this time, arcs A1 and A2 may be generated at a position where the separation portion 53 is separated from the terminal portions 51 and 52.
　冷却体３は、分離部５３が端子部５１から分離されるときに発生するアークＡ１、及び分離部５３が端子部５２から分離されるときに発生するアークＡ２に、接触する。これにより、アークＡ１，Ａ２が冷却され、アークＡ１，Ａ２の消弧が促進される。なお、アークが冷却体３に接触することで、アークを構成する金属ガスが冷却体３に付着する。そのため、冷却体３があることで、アークの発生に起因する内部空間９０の圧力の上昇が抑制され得る。 The cooling body 3 comes into contact with the arc A1 generated when the separating portion 53 is separated from the terminal portion 51 and the arc A2 generated when the separating portion 53 is separated from the terminal portion 52. As a result, the arcs A1 and A2 are cooled, and the extinguishing of the arcs A1 and A2 is promoted. When the arc comes into contact with the cooling body 3, the metal gas constituting the arc adheres to the cooling body 3. Therefore, the presence of the cooling body 3 can suppress an increase in pressure in the internal space 90 due to the generation of an arc.
　本実施形態の遮断装置１によれば、端子部２１，２２間の電路は、第１経路と第２経路との並列回路から、第１経路が遮断されることによって第２経路のみの回路へと変化する。これにより、端子部２１，２２間の電路の電気抵抗が増加し、この電路に流れる電流の大きさが減少する（限流）。そして、端子部２１，２２間の電路は、電流の大きさが減少した状態で分離部５３が分離されることによって、遮断される。 According to the blocking device 1 of the present embodiment, the electric circuit between the terminal portions 21 and 22 changes from the parallel circuit of the first path and the second path to the circuit of only the second path by blocking the first path. It changes with. As a result, the electrical resistance of the electric circuit between the terminals 21 and 22 increases, and the magnitude of the current flowing through this electric circuit decreases (current limiting). Then, the electric circuit between the terminal portions 21 and 22 is cut off by separating the separation portion 53 in a state where the magnitude of the current is reduced.
　すなわち、本実施形態の遮断装置１は、例えば分離部５３を備えていない遮断装置に比べて、電路が遮断される時に電路に流れている電流の大きさが小さくなる。そのため、遮断装置１は、分離部５３を備えていない遮断装置に比べて、アークの発生を抑制することが可能となる。なお、アークの発生を抑制するとは、アークを発生させなくすることに限らず、発生したアークが持続する時間を短くすること、又は発生するアークのエネルギーを小さくすることを含み得る。 That is, in the breaking device 1 of the present embodiment, the magnitude of the current flowing through the electric circuit when the electric circuit is cut off is smaller than that of the breaking device 1 not provided with, for example, the separation unit 53. Therefore, the breaking device 1 can suppress the generation of an arc as compared with the breaking device not provided with the separation unit 53. It should be noted that suppressing the generation of an arc is not limited to not generating the arc, but may include shortening the duration of the generated arc or reducing the energy of the generated arc.
　また、遮断装置１では、冷却体３が、動作ピン８の移動方向において動作ピン８の投影領域に配置されている。言い換えれば、冷却体３は、動作ピン８の下方に位置する。そのため、冷却体３が、発生したアークに接触しやすい。これにより、アークの消弧を促進することが可能となる。 Further, in the blocking device 1, the cooling body 3 is arranged in the projection region of the operating pin 8 in the moving direction of the operating pin 8. In other words, the cooling body 3 is located below the operating pin 8. Therefore, the cooling body 3 is likely to come into contact with the generated arc. This makes it possible to promote the extinguishing of the arc.
　（１．２）構成
　本実施形態の遮断装置１について、図１～図９を参照して、より詳細に説明する。 (1.2) Configuration The blocking device 1 of the present embodiment will be described in more detail with reference to FIGS. 1 to 9.
　遮断装置１は、上述のように、第１導電体２と、第２導電体５と、冷却体３と、ガス発生器７０と、動作ピン８と、ハウジング９と、を備えている。また、遮断装置１は、第１規制体４１と、第２規制体４２と、を備えている。 As described above, the blocking device 1 includes a first conductor 2, a second conductor 5, a cooling body 3, a gas generator 70, an operation pin 8, and a housing 9. Further, the blocking device 1 includes a first regulating body 41 and a second regulating body 42.
　遮断装置１は、例えば、電動車両等に備えられる。遮断装置１は、例えば、電動車両の電源とモータとを接続する電気回路に設けられ、電源からモータへの電流の供給の有無を切り替える。遮断装置１におけるガス発生器７０の動作は、例えば、電動車両に設けられている制御部（ＥＣＵ：Electronic Control Unit等）によって制御される。 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 gas generator 70 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.
　以下では、説明の便宜上、動作ピン８の移動方向に沿った方向であって動作ピン８と第１導電体２とが対向する方向（図６の上下方向）を上下方向と呼び、動作ピン８から見て第１導電体２側を下側、第１導電体２から見て動作ピン８側を上側と呼ぶ。また、第１導電体２の長手方向であって端子部２１，２２が並ぶ方向（図６の左右方向）を左右方向と呼ぶ。また、上下方向及び左右方向の両方と直交する方向（図６の紙面に垂直な方向）を前後方向と呼ぶ。なお、これらの方向は、遮断装置１の構造を説明するための便宜的なものであり、遮断装置１を使用する場合の遮断装置１の向き等を規定するものではない。 Hereinafter, for convenience of explanation, the direction in which the operation pin 8 and the first conductor 2 face each other (the vertical direction in FIG. 6), which is the direction along the moving direction of the operation pin 8, is referred to as the vertical direction, and the operation pin 8 The side of the first conductor 2 is referred to as the lower side, and the side of the operation pin 8 as viewed from the first conductor 2 is referred to as the upper side. Further, the longitudinal direction of the first conductor 2 and the direction in which the terminal portions 21 and 22 are lined up (the left-right direction in FIG. 6) is referred to as a left-right direction. Further, a direction orthogonal to both the vertical direction and the horizontal direction (direction perpendicular to the paper surface of FIG. 6) is referred to as a front-back direction. It should be noted that these directions are for convenience of explaining the structure of the blocking device 1, and do not specify the orientation of the blocking device 1 when the blocking device 1 is used.
　第１導電体２は、例えば、銅により形成されている。図３、図６に示すように、第１導電体２は、上下方向に厚さを有し左右方向に長い矩形の板状に形成されている。図３に示すように、端子部２１，２２、及び分離部２３は、幅（前後方向の寸法）及び厚さ（上下方向の寸法）が互いに等しい。 The first conductor 2 is made of copper, for example. As shown in FIGS. 3 and 6, the first conductor 2 is formed in the shape of a rectangular plate having a thickness in the vertical direction and a long shape in the horizontal direction. As shown in FIG. 3, the terminal portions 21 and 22 and the separating portion 23 have the same width (dimension in the front-rear direction) and thickness (dimension in the vertical direction).
　端子部２１，２２は、外部電路（電動車両の電気回路）に電気的に接続される。端子部２１，２２の各々は、嵌合、接着、溶着、ねじ止め等の適宜の手段で、外部電路に対して電気的に接続され得る。 The terminal portions 21 and 22 are electrically connected to an external electric circuit (electric circuit of an electric vehicle). Each of the terminal portions 21 and 22 can be electrically connected to an external electric circuit by appropriate means such as fitting, bonding, welding, and screwing.
　分離部２３は、端子部２１，２２をつないでいる。端子部２１，２２及び分離部２３は、一体に形成されている。第１導電体２の長手方向において、一方の端子部２１と、分離部２３と、他方の端子部２２とが、この順に並んでいる。 The separation unit 23 connects the terminal units 21 and 22. The terminal portions 21 and 22 and the separation portion 23 are integrally formed. In the longitudinal direction of the first conductor 2, one terminal portion 21, the separation portion 23, and the other terminal portion 22 are arranged in this order.
　第１導電体２は、第１導電体２の長手方向に並ぶ２つの溝２４を有している。各溝２４は、第１導電体２の第１の面Ｆ１（図６参照）及び第１の面Ｆ１とは反対側の第２の面Ｆ２（図６参照）のうち、第１の面Ｆ１に形成されている。第１の面Ｆ１は、動作ピン８と対向する面である。各溝２４の深さ方向は、第１導電体２の厚さ方向に沿っている。２つの溝２４の各々は、部分円筒状（円弧状）である。２つの溝２４は、同心状に形成されている。２つの溝２４は、外側（中心から遠い側）の径が互いに等しく、内側（中心に近い側）の径も互いに等しい。 The first conductor 2 has two grooves 24 arranged in the longitudinal direction of the first conductor 2. Each groove 24 is a first surface F1 of a first surface F1 (see FIG. 6) of the first conductor 2 and a second surface F2 (see FIG. 6) opposite to the first surface F1. Is formed in. The first surface F1 is a surface facing the operation pin 8. The depth direction of each groove 24 is along the thickness direction of the first conductor 2. Each of the two grooves 24 is partially cylindrical (arc-shaped). 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).
　２つの溝２４が、一方の端子部２１と分離部２３との境界部分２４０、及び他方の端子部２２と分離部２３との境界部分２４０を規定する。境界部分２４０の破断強度は、端子部２１，２２の各々の破断強度以下である。また、境界部分２４０の破断強度は、分離部２３の破断強度以下である。すなわち、境界部分２４０は、第１導電体２の他の箇所に比べて破断しやすい。 The two grooves 24 define the boundary portion 240 between one terminal portion 21 and the separation portion 23, and the boundary portion 240 between the other terminal portion 22 and the separation portion 23. The breaking strength of the boundary portion 240 is equal to or less than the breaking strength of each of the terminal portions 21 and 22. Further, the breaking strength of the boundary portion 240 is equal to or less than the breaking strength of the separating portion 23. That is, the boundary portion 240 is more likely to break than other portions of the first conductor 2.
　２つの端子部２１，２２の各々において、溝２４の近くに、貫通孔が形成されている。 Through holes are formed near the grooves 24 in each of the two terminal portions 21 and 22.
　第２導電体５は、例えば、銅により形成されている。ただし、これに限らず、第２導電体５は、第１導電体２の材料よりも抵抗率の高い導電材料から形成されていてもよい。第２導電体５の厚さは、第１導電体２の厚さよりも薄い。 The second conductor 5 is made of, for example, copper. However, the present invention is not limited to this, and the second conductor 5 may be formed of a conductive material having a higher resistivity than the material of the first conductor 2. The thickness of the second conductor 5 is thinner than the thickness of the first conductor 2.
　図３に示すように、第２導電体５は、左右方向に長い底板部５０１と、底板部５０１の両端から上方に延びる一対の縦板部５０２，５０３と、一対の縦板部５０２，５０３の上端から互いに離れる向きに延びる一対の鍔部５０４，５０５と、を一体に有している。一対の鍔部５０４，５０５の各々の幅（前後方向の寸法）は、底板部５０１の幅（前後方向の寸法）よりも大きい。各鍔部５０４，５０５には、貫通孔が形成されている。第２導電体５は、例えば、第１導電体２よりも薄い金属板に、打抜加工及び折曲加工を施すことで形成され得る。 As shown in FIG. 3, the second conductor 5 includes a bottom plate portion 501 that is long in the left-right direction, a pair of vertical plate portions 502,503 extending upward from both ends of the bottom plate portion 501, and a pair of vertical plate portions 502,503. It integrally has a pair of collar portions 504 and 505 extending in directions away from each other from the upper end of the above. The width of each of the pair of flange portions 504 and 505 (dimensions in the front-rear direction) is larger than the width of the bottom plate portion 501 (dimensions in the front-rear direction). Through holes are formed in each of the collar portions 504 and 505. The second conductor 5 can be formed, for example, by subjecting a metal plate thinner than the first conductor 2 to punching and bending.
　底板部５０１は、底板部５０１の他の部分よりも幅（前後方向の寸法）が小さな幅狭部５４を２つ有している。２つの幅狭部５４は、底板部５０１の長手方向において、対称な位置に設けられている。第２導電体５において、２つの幅狭部５４が、一方の端子部５１と分離部５３との境界部分、及び他方の端子部５２と分離部５３との境界部分を規定する。幅狭部５４は、底板部５０１の他の箇所に比べて破断しやすい。 The bottom plate portion 501 has two narrow portions 54 having a width (dimensions in the front-rear direction) smaller than the other portions of the bottom plate portion 501. The two narrow portions 54 are provided at symmetrical positions in the longitudinal direction of the bottom plate portion 501. In the second conductor 5, the two narrow portions 54 define the boundary portion between one terminal portion 51 and the separation portion 53, and the boundary portion between the other terminal portion 52 and the separation portion 53. The narrow portion 54 is more likely to break than other portions of the bottom plate portion 501.
　ハウジング９は、例えば、樹脂により形成されている。ハウジング９は、その内部に空間（内部空間９０）を有している。内部空間９０は、ハウジング９の外部から隔離された密閉空間である。 The housing 9 is made of, for example, resin. The housing 9 has a space (internal space 90) inside the housing 9. The internal space 90 is a closed space isolated from the outside of the housing 9.
　図１、図２、図５に示すように、ハウジング９は、第１ボディ９１と、第２ボディ９２と、第３ボディ９３と、第４ボディ９４と、第１ホルダ９５と、第２ホルダ９６と、を備えている。なお、図５は、冷却体３及び動作ピン８を取り除いた状態の遮断装置１を示している。 As shown in FIGS. 1, 2, and 5, the housing 9 includes a first body 91, a second body 92, a third body 93, a fourth body 94, a first holder 95, and a second holder. It has 96 and. Note that FIG. 5 shows the shutoff device 1 in a state in which the cooling body 3 and the operation pin 8 are removed.
　第１ボディ９１は、矩形の箱状である。第１ボディ９１の上面の中央には、断面円形状の内周面を有し上側に開口する筒状の凹所９１０が形成されている。凹所９１０の底面は、湾曲面である。第１ボディ９１の上面において凹所９１０の周りには、円環状の凹所が形成されている。この凹所により、第１ボディ９１の上面に第２ボディ９２が重ねられた状態で、円環状の溝９１１が形成される。 The first body 91 has a rectangular box shape. At the center of the upper surface of the first body 91, a tubular recess 910 having an inner peripheral surface having a circular cross section and opening upward is formed. The bottom surface of the recess 910 is a curved surface. An annular recess is formed around the recess 910 on the upper surface of the first body 91. Due to this recess, an annular groove 911 is formed in a state where the second body 92 is overlapped on the upper surface of the first body 91.
　第２ボディ９２は、矩形の箱状である。第２ボディ９２は、第１ボディ９１の上面に重ねられる。第２ボディ９２の中央には、上下方向に延びる断面円形状の貫通孔９２０が形成されている。貫通孔９２０の径は、第１ボディ９１の凹所９１０の径よりも小さい。 The second body 92 has a rectangular box shape. The second body 92 is superposed on the upper surface of the first body 91. A through hole 920 having a circular cross section extending in the vertical direction is formed in the center of the second body 92. The diameter of the through hole 920 is smaller than the diameter of the recess 910 of the first body 91.
　第２ボディ９２の上面において貫通孔９２０の周りには、貫通孔９２０の径よりも径の大きな断面円形状の凹所９２１が、貫通孔９２０と同心状に形成されている。凹所９２１の底面には、第２導電体５の厚さ程度の深さを有し左右方向に延びる窪みが形成されている。この窪みに、第２導電体５の底板部５０１が配置される。 On the upper surface of the second body 92, around the through hole 920, a recess 921 having a circular cross section having a diameter larger than the diameter of the through hole 920 is formed concentrically with the through hole 920. On the bottom surface of the recess 921, a recess having a depth of about the thickness of the second conductor 5 and extending in the left-right direction is formed. The bottom plate portion 501 of the second conductor 5 is arranged in this recess.
　また、第２ボディ９２の上面には、左右方向に延びる嵌合凹所が形成されている。この嵌合凹所に、第１導電体２の下側の部分が嵌め込まれる。 Further, a fitting recess extending in the left-right direction is formed on the upper surface of the second body 92. The lower portion of the first conductor 2 is fitted into the fitting recess.
　第３ボディ９３は、矩形の箱状である。第３ボディ９３は、第２ボディ９２の上面に重ねられる。第３ボディ９３の中央には、上下方向に延びる断面円形状の貫通孔９３０が形成されている。 The third body 93 has a rectangular box shape. The third body 93 is superposed on the upper surface of the second body 92. A through hole 930 having a circular cross section extending in the vertical direction is formed in the center of the third body 93.
　第３ボディ９３の下面において貫通孔９３０の周りには、貫通孔９３０の径よりも径の大きな断面円形状の凹所９３１が、貫通孔９３０と同心状に形成されている。凹所９３１の径は、凹所９２１の径と略同じである。また、第３ボディ９３の貫通孔９３０の内周面において、凹所９３１の上方には、貫通孔９３０の内周面から内方に突出する円環状のリブ９３２が形成されている。 On the lower surface of the third body 93, around the through hole 930, a recess 931 having a circular cross section having a diameter larger than the diameter of the through hole 930 is formed concentrically with the through hole 930. The diameter of the recess 931 is substantially the same as the diameter of the recess 921. Further, on the inner peripheral surface of the through hole 930 of the third body 93, an annular rib 932 protruding inward from the inner peripheral surface of the through hole 930 is formed above the recess 931.
　また、第３ボディ９３の下面には、左右方向に延びる嵌合凹所が形成されている。この嵌合凹所に、第１導電体２の上側の部分が嵌め込まれる。 Further, a fitting recess extending in the left-right direction is formed on the lower surface of the third body 93. The upper portion of the first conductor 2 is fitted into the fitting recess.
　第３ボディ９３の上面において貫通孔９３０の周りには、円環状の凹所９３３が形成されている。この凹所に、第２ホルダ９６の下端部分が嵌め込まれる。 An annular recess 933 is formed around the through hole 930 on the upper surface of the third body 93. The lower end portion of the second holder 96 is fitted into this recess.
　第４ボディ９４は、矩形箱状の部分と、その上面に形成された円柱状の部分と、が組み合わされた形状を有している。第４ボディ９４は、第３ボディ９３の上面に重ねられる。 The fourth body 94 has a shape in which a rectangular box-shaped portion and a columnar portion formed on the upper surface thereof are combined. The fourth body 94 is superposed on the upper surface of the third body 93.
　第４ボディ９４の中央には、上下方向に延びる貫通孔が形成されている。また、第４ボディ９４の下面（第３ボディ９３の上面と接する面）には、円環状の溝が形成されている。この溝に、オーリング６２が嵌め込まれる。 A through hole extending in the vertical direction is formed in the center of the fourth body 94. An annular groove is formed on the lower surface of the fourth body 94 (the surface in contact with the upper surface of the third body 93). The O-ring 62 is fitted into this groove.
　図４に示すように、第１ホルダ９５は、第１部分９５１と、第２部分９５２と、を有している。第１部分は、その軸が上下方向に沿った中空の円筒状である。第１部分９５１は、その左右の両側面に凹所を有している。第２部分は、第１部分９５１と同心の中空の円筒状である。第２部分９５２は、第１部分９５１の上面から上方に延びている。第２部分９５２の外径は、第３ボディ９３のリブ９３２の内径と略等しい。 As shown in FIG. 4, the first holder 95 has a first portion 951 and a second portion 952. The first part has a hollow cylindrical shape whose axis is along the vertical direction. The first portion 951 has recesses on both left and right side surfaces thereof. The second portion is a hollow cylinder concentric with the first portion 951. The second portion 952 extends upward from the upper surface of the first portion 951. The outer diameter of the second portion 952 is substantially equal to the inner diameter of the rib 932 of the third body 93.
　第１ホルダ９５は、その中央に、上下方向に延びる断面円形状の貫通孔９５０を有している。第１ホルダ９５の内周面（貫通孔９５０の内面）には段差９５３が円環状に形成されている。貫通孔９５０の径は、段差９５３より上側の部分の方が、下側の部分よりも大きい。 The first holder 95 has a through hole 950 having a circular cross section extending in the vertical direction in the center thereof. A step 953 is formed in an annular shape on the inner peripheral surface (inner surface of the through hole 950) of the first holder 95. The diameter of the through hole 950 is larger in the upper portion than the step 953 than in the lower portion.
　第１ホルダ９５は、左右方向に貫通する、断面矩形状の貫通孔９５４を有している。貫通孔９５４の断面形状は、第１導電体２の断面形状と略同じである。第１導電体２は、第１ホルダ９５の左右の貫通孔９５４に挿入されることで、第１ホルダ９５に保持される。 The first holder 95 has a through hole 954 having a rectangular cross section that penetrates in the left-right direction. The cross-sectional shape of the through hole 954 is substantially the same as the cross-sectional shape of the first conductor 2. The first conductor 2 is held in the first holder 95 by being inserted into the left and right through holes 954 of the first holder 95.
　図５に示すように、第１ホルダ９５は、凹所９２１，９３１で囲まれる空間内に第１部分９５１が位置し、第３ボディ９３のリブ９３２の内周面に第２部分９５２の外周面が接触した状態で、第２ボディ９２と第３ボディ９３との間に保持される。 As shown in FIG. 5, in the first holder 95, the first portion 951 is located in the space surrounded by the recesses 921 and 931, and the outer circumference of the second portion 952 is on the inner peripheral surface of the rib 932 of the third body 93. It is held between the second body 92 and the third body 93 in a state where the surfaces are in contact with each other.
　第１ホルダ９５が第２ボディ９２と第３ボディ９３との間に保持された状態で、第１ホルダ９５の貫通孔９５０の下端と第２ボディ９２の貫通孔９２０の内周面の上端とは、つながっている。 With the first holder 95 held between the second body 92 and the third body 93, the lower end of the through hole 950 of the first holder 95 and the upper end of the inner peripheral surface of the through hole 920 of the second body 92. Are connected.
　図１、図５に示すように、第１ホルダ９５の貫通孔９５０の径は、第１導電体２における溝２４の径とほぼ等しい。より詳細には、貫通孔９５０の径は、溝２４の外側の径よりも小さく、内側の径よりも大きい。第１導電体２は、溝２４が貫通孔９５０の内面の下端と対向する位置で、第１ホルダ９５に保持されている。 As shown in FIGS. 1 and 5, the diameter of the through hole 950 of the first holder 95 is substantially equal to the diameter of the groove 24 in the first conductor 2. More specifically, the diameter of the through hole 950 is smaller than the outer diameter of the groove 24 and larger than the inner diameter. The first conductor 2 is held by the first holder 95 at a position where the groove 24 faces the lower end of the inner surface of the through hole 950.
　第１導電体２において、一方の端子部２１における分離部２３側の端部、及び他方の端子部２２における分離部２３側の端部は、ハウジング９（第１ホルダ９５）に保持されている。第１導電体２において、一方の端子部２１における分離部２３とは反対側の端部、及び他方の端子部２２における分離部２３とは反対側の端部は、ハウジング９の外部へ露出している。 In the first conductor 2, the end portion of one terminal portion 21 on the separation portion 23 side and the end portion of the other terminal portion 22 on the separation portion 23 side are held by the housing 9 (first holder 95). .. In the first conductor 2, the end portion of one terminal portion 21 opposite to the separation portion 23 and the end portion of the other terminal portion 22 opposite to the separation portion 23 are exposed to the outside of the housing 9. ing.
　第２導電体５は、底板部５０１及び縦板部５０２，５０３が第１ホルダ９５の下面及び側面に沿い、かつ鍔部５０４，５０５が第１導電体２の下面に接触するように、配置される。そして、例えば、第２導電体５の鍔部５０４（５０５）に形成されている貫通孔と、第１導電体２の端子部２１（２２）に形成されている貫通孔とに、共通のボルトを通し、ボルトにナットを結合することで、第１導電体２と第２導電体５とが結合される。要するに、本実施形態の遮断装置１では、第２導電体５において、一対の鍔部５０４，５０５が、第１導電体２の端子部２１とそれぞれ接続される第１端５１０及び第２端５２０に相当する。 The second conductor 5 is arranged so that the bottom plate portions 501 and the vertical plate portions 502 and 503 are along the lower surface and the side surface of the first holder 95, and the flange portions 504 and 505 are in contact with the lower surface of the first conductor 2. Will be done. Then, for example, a bolt common to the through hole formed in the flange portion 504 (505) of the second conductor 5 and the through hole formed in the terminal portion 21 (22) of the first conductor 2. The first conductor 2 and the second conductor 5 are bonded by connecting the nut to the bolt. In short, in the blocking device 1 of the present embodiment, in the second conductor 5, the pair of flange portions 504 and 505 are connected to the terminal portions 21 of the first conductor 2, respectively, at the first end 510 and the second end 520. Corresponds to.
　遮断装置１では、第２導電体５は、第１導電体２よりも薄い。また、第２経路の長さは第１経路の長さよりも長い。ここで、第１経路は、第１導電体２において第２導電体５に接続される箇所（第１端５１０に接続される箇所及び第２端５２０に接続される箇所）の間の部分（分離部２３を含む部分）である。また、第２経路は、第２導電体５において第１導電体２に接続される箇所（第１端５１０及び第２端５２０）の間の部分（分離部５３を含む部分）である。そのため、遮断装置１では、第１経路の電気抵抗は、第２経路の電気抵抗より小さい。すなわち、遮断装置１では、第１導電体２における第１端５１０に接続される部位と第２端５２０に接続される部位との間の部分の電気抵抗は、第２導電体５における第１端５１０と第２端５２０との間の部分の電気抵抗より小さい。第１経路の電気抵抗は、第２経路の電気抵抗よりも十分に小さいことが好ましい。特に限定されないが、例えば、第１経路の電気抵抗は、第２経路の電気抵抗の１／１００以下である。 In the blocking device 1, the second conductor 5 is thinner than the first conductor 2. Further, the length of the second path is longer than the length of the first path. Here, the first path is a portion (a portion connected to the first end 510 and a portion connected to the second end 520) of the first conductor 2 connected to the second conductor 5. The portion including the separation portion 23). The second path is a portion (a portion including the separation portion 53) between the portions (first end 510 and second end 520) connected to the first conductor 2 in the second conductor 5. Therefore, in the breaking device 1, the electric resistance of the first path is smaller than the electric resistance of the second path. That is, in the blocking device 1, the electrical resistance of the portion of the first conductor 2 between the portion connected to the first end 510 and the portion connected to the second end 520 is the first in the second conductor 5. It is smaller than the electrical resistance of the part between the end 510 and the second end 520. The electrical resistance of the first path is preferably sufficiently smaller than the electrical resistance of the second path. Although not particularly limited, for example, the electric resistance of the first path is 1/100 or less of the electric resistance of the second path.
　また、遮断装置１では、第２導電体５における第１端５１０と第２端５２０との間の部分の融点は、第１導電体２における第１端５１０に接続される部位と第２端５２０に接続される部位との間の部分の融点よりも、高い。すなわち、遮断装置１では、第２経路を構成する部分の方が、第１経路を構成する部分よりも、溶融しにくい。 Further, in the blocking device 1, the melting point of the portion of the second conductor 5 between the first end 510 and the second end 520 is the portion connected to the first end 510 of the first conductor 2 and the second end. It is higher than the melting point of the part between it and the part connected to 520. That is, in the blocking device 1, the portion constituting the second path is less likely to melt than the portion constituting the first path.
　図５に示すように、凹所９２１，９３１で囲まれる空間内に第１ホルダ９５の第１部分９５１が配置された状態において、第１導電体２は、第２ボディ９２の上面の嵌合凹所及び第３ボディ９３の下面の嵌合凹所に嵌め込まれる。このとき、第２導電体５の底板部５０１は、第２ボディ９２の凹所９２１の底面に形成されている窪み内に位置しており、第１ホルダ９５の下面と第２ボディ９２の凹所９２１の底面との間に挟持されている。また、第２導電体５の一対の縦板部５０２，５０３は、第１ホルダ９５の左右の側壁に沿っている。 As shown in FIG. 5, in a state where the first portion 951 of the first holder 95 is arranged in the space surrounded by the recesses 921 and 931, the first conductor 2 is fitted with the upper surface of the second body 92. It is fitted into the recess and the fitting recess on the lower surface of the third body 93. At this time, the bottom plate portion 501 of the second conductor 5 is located in the recess formed in the bottom surface of the recess 921 of the second body 92, and the lower surface of the first holder 95 and the recess of the second body 92. It is sandwiched between the bottom surface of the place 921 and the bottom surface. Further, the pair of vertical plate portions 502 and 503 of the second conductor 5 are along the left and right side walls of the first holder 95.
　第１ホルダ９５は、例えば、第２ボディ９２の材料及び第３ボディ９３の材料よりも耐熱性の高い材料で形成されていてもよい。 The first holder 95 may be made of, for example, a material having higher heat resistance than the material of the second body 92 and the material of the third body 93.
　第２ホルダ９６は、第４ボディ９４の貫通孔内に配置されている。第２ホルダ９６は、その外周面が第４ボディ９４の貫通孔の内周面に沿う形状を有している。また、第２ホルダ９６の下端部分は、第３ボディ９３の凹所９３３に嵌め込まれている。 The second holder 96 is arranged in the through hole of the fourth body 94. The outer peripheral surface of the second holder 96 has a shape along the inner peripheral surface of the through hole of the fourth body 94. Further, the lower end portion of the second holder 96 is fitted in the recess 933 of the third body 93.
　第２ホルダ９６は、断面円形状の内周面を有し下側に開口する凹所９６０を有している。凹所９６０の内周面の径は、第３ボディ９３の貫通孔９３０の内周面の径と略等しい。第２ホルダ９６が、第４ボディ９４内及び第３ボディ９３の凹所９３３内に配置された状態で、第２ホルダ９６の凹所９６０の内周面の下端は、第３ボディ９３の貫通孔９３０の内周面の上端と、つながっている。 The second holder 96 has an inner peripheral surface having a circular cross section and has a recess 960 that opens downward. The diameter of the inner peripheral surface of the recess 960 is substantially equal to the diameter of the inner peripheral surface of the through hole 930 of the third body 93. With the second holder 96 arranged in the fourth body 94 and the recess 933 of the third body 93, the lower end of the inner peripheral surface of the recess 960 of the second holder 96 penetrates the third body 93. It is connected to the upper end of the inner peripheral surface of the hole 930.
　また、第２ホルダ９６は、その上端に、円筒状の収容壁９６１を備えている。収容壁９６１の内部に、ガス発生器７０が配置される。収容壁９６１とガス発生器７０との間には、オーリング６４が配置される。ガス発生器７０が収容壁９６１に配置されることで、ハウジング９の内部空間９０が密閉される。ハウジング９の内部空間９０は、第１ボディ９１の凹所９１０の内面、第２ボディ９２の貫通孔９２０の内面、第１ホルダ９５の貫通孔９５０の内面、第１導電体２の溝２４の側面、第３ボディ９３の貫通孔９３０の内面、第２ホルダ９６の凹所９６０の内面、及びガス発生器７０の下面で囲まれる空間である。 Further, the second holder 96 is provided with a cylindrical accommodating wall 961 at the upper end thereof. A gas generator 70 is arranged inside the containment wall 961. An O-ring 64 is arranged between the containment wall 961 and the gas generator 70. By arranging the gas generator 70 on the accommodation wall 961, the internal space 90 of the housing 9 is sealed. The internal space 90 of the housing 9 is the inner surface of the recess 910 of the first body 91, the inner surface of the through hole 920 of the second body 92, the inner surface of the through hole 950 of the first holder 95, and the groove 24 of the first conductor 2. It is a space surrounded by the side surface, the inner surface of the through hole 930 of the third body 93, the inner surface of the recess 960 of the second holder 96, and the lower surface of the gas generator 70.
　図５に示すように、ハウジング９の内部空間９０（密閉空間）は、第１空間ＳＰ１と第２空間ＳＰ２と第３空間ＳＰ３とを含む。第１空間ＳＰ１と第２空間ＳＰ２と第３空間ＳＰ３とは、つながっている。 As shown in FIG. 5, the internal space 90 (sealed space) of the housing 9 includes the first space SP1, the second space SP2, and the third space SP3. The first space SP1, the second space SP2, and the third space SP3 are connected to each other.
　第１空間ＳＰ１は、第１ホルダ９５の貫通孔９５０の内面における第１導電体２（破断される前）よりも上側の部分と、第３ボディ９３の貫通孔９３０の内面と、第２ホルダ９６の凹所９６０の内面と、ガス発生器７０の下面と、で囲まれる空間である。すなわち、第１空間ＳＰ１は、内部空間９０において、第１導電体２よりも上側の空間である。この第１空間ＳＰ１に、動作ピン８が配置される。 The first space SP1 includes a portion of the inner surface of the through hole 950 of the first holder 95 above the first conductor 2 (before being broken), an inner surface of the through hole 930 of the third body 93, and a second holder. It is a space surrounded by the inner surface of the recess 960 of 96 and the lower surface of the gas generator 70. That is, the first space SP1 is a space above the first conductor 2 in the internal space 90. The operation pin 8 is arranged in the first space SP1.
　第２空間ＳＰ２は、第２ボディ９２の貫通孔９２０の内面と、第１ボディ９１の凹所９１０の内面と、で囲まれる空間である。すなわち、第２空間ＳＰ２は、内部空間９０において、第２導電体５よりも下側の空間である。第２空間ＳＰ２は、端子部２１，２２から分離された分離部２３、及び端子部５１，５２から分離された分離部５３が、収容される空間である。 The second space SP2 is a space surrounded by the inner surface of the through hole 920 of the second body 92 and the inner surface of the recess 910 of the first body 91. That is, the second space SP2 is a space below the second conductor 5 in the internal space 90. The second space SP2 is a space in which the separation portion 23 separated from the terminal portions 21 and 22 and the separation portion 53 separated from the terminal portions 51 and 52 are housed.
　第３空間ＳＰ３は、第１ホルダ９５の貫通孔９５０の内面における第１導電体２（破断される前）よりも下側かつ第２導電体５（破断される前）よりも上側の部分で囲まれる空間である。すなわち、第３空間ＳＰ３は、内部空間９０において、第１導電体２と第２導電体５との間の空間である。 The third space SP3 is located below the first conductor 2 (before being broken) and above the second conductor 5 (before being broken) on the inner surface of the through hole 950 of the first holder 95. It is a space surrounded. That is, the third space SP3 is a space between the first conductor 2 and the second conductor 5 in the internal space 90.
　ガス発生器７０は、収容壁９６１の内部に配置される。ガス発生器７０は、燃料７４の燃焼によりガスを発生させる。ガス発生器７０は、発生したガスの圧力に連動して、動作ピン８を移動させる。図１に示すように、ガス発生器７０は、燃料７４と、ケース７１と、通電用の２つのピン電極７２と、発熱素子７３と、を備えている。 The gas generator 70 is arranged inside the accommodation wall 961. The gas generator 70 generates gas by burning the fuel 74. The gas generator 70 moves the operation pin 8 in conjunction with the pressure of the generated gas. 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.
　ケース７１は、中空の円柱状である。ケース７１は、その下端に、内部空間を有している。このケース７１の内部空間に、燃料７４及び発熱素子７３が収容される。ケース７１は、内部空間を構成する下側の壁に、例えば十字溝が形成されており、この溝が形成された部分が他の部分よりも破断しやすくなっている。 Case 71 is a hollow columnar shape. The case 71 has an internal space at the lower end thereof. The fuel 74 and the heat generating element 73 are housed in the internal space of the case 71. In the case 71, for example, 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.
　燃料７４は、温度が上昇すると燃焼してガスを発生させる。燃料７４は、例えば、ニトロセルロース、アジ化鉛、黒色火薬、グリシジルアジドポリマ等の火薬である。 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.
　２つのピン電極７２は、ケース７１に保持されている。２つのピン電極７２の各々の第１端は、ハウジング９の外部に露出している。２つのピン電極７２の各々の第２端は、発熱素子７３に接続されている。つまり、発熱素子７３は、２つのピン電極７２の間に接続されている。発熱素子７３は、通電されることにより熱を発生する。発熱素子７３は、例えばニクロム線、鉄とクロムとアルミの合金線等である。 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 generates heat when it is energized. The heat generating element 73 is, for example, a nichrome wire, an alloy wire of iron, chromium, and aluminum, or the like.
　ガス発生器７０は、燃料７４を燃焼させることによりガスを発生させる。より詳細には、ガス発生器７０は、２つのピン電極７２の間が通電されると発熱素子７３が発熱して、発熱素子７３の周りの燃料７４の温度を上昇させる。これにより燃料７４が燃焼して、ガスが発生する。 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.
　図１に示すように、動作ピン８は、ハウジング９の内部空間９０に配置される。動作ピン８は、ガス発生器７０と分離部２３との間に配置されている。動作ピン８は、電気絶縁性を有している。動作ピン８は、例えば、材料として樹脂を含む。 As shown in FIG. 1, the operation pin 8 is arranged in the internal space 90 of the housing 9. The operation pin 8 is arranged between the gas generator 70 and the separation unit 23. The operation pin 8 has electrical insulation. The operation pin 8 contains, for example, a resin as a material.
　図１、図３に示すように、動作ピン８は、第１柱状部８１と、第２柱状部８２と、を有している。 As shown in FIGS. 1 and 3, the operation pin 8 has a first columnar portion 81 and a second columnar portion 82.
　第１柱状部８１は、円柱状である。第１柱状部８１は、分離部２３に近い側（下側）に位置する。第１柱状部８１の外径は、第１ホルダ９５の貫通孔９５０の径と略等しい。 The first columnar portion 81 is columnar. The first columnar portion 81 is located on the side (lower side) closer to the separation portion 23. The outer diameter of the first columnar portion 81 is substantially equal to the diameter of the through hole 950 of the first holder 95.
　第２柱状部８２は、分離部２３から遠い側（上側）に位置する。第２柱状部８２は、第１柱状部８１よりも外径が大きな円柱状である。そのため、第１柱状部８１と第２柱状部８２との間には段差がある。第２柱状部８２の外径は、第２ホルダ９６の凹所９６０の内周面の径、及び第３ボディ９３の貫通孔９３０の径と、略等しい。 The second columnar portion 82 is located on the side (upper side) far from the separation portion 23. The second columnar portion 82 is a columnar shape having an outer diameter larger than that of the first columnar portion 81. Therefore, there is a step between the first columnar portion 81 and the second columnar portion 82. The outer diameter of the second columnar portion 82 is substantially equal to the diameter of the inner peripheral surface of the recess 960 of the second holder 96 and the diameter of the through hole 930 of the third body 93.
　図３に示すように、動作ピン８の第２柱状部８２の外周面には、円環状の凹所が形成されている。この凹所に、オーリング６５が配置される（図１参照）。オーリング６５の外縁は、凹所９６０の内面に接している。このオーリング６５と、動作ピン８及び第２ホルダ９６との間の摩擦力により、動作ピン８が、ハウジング９の第１空間ＳＰ１内に保持されている。また、動作ピン８の上面には、凹所８４が形成されている。 As shown in FIG. 3, an annular recess is formed on the outer peripheral surface of the second columnar portion 82 of the operation pin 8. An O-ring 65 is arranged in this recess (see FIG. 1). The outer edge of the O-ring 65 is in contact with the inner surface of the recess 960. The operating pin 8 is held in the first space SP1 of the housing 9 by the frictional force between the O-ring 65 and the operating pin 8 and the second holder 96. Further, a recess 84 is formed on the upper surface of the operation pin 8.
　動作ピン８は、高さ方向の第１面（上面）がガス発生器７０に対向するように、ハウジング９の第１空間ＳＰ１内に配置されている。動作ピン８が配置された状態で、ハウジング９内には、動作ピン８の凹所８４、ガス発生器７０の下面、及び凹所９６０の内面に囲まれるように、気密な空間（加圧室７５）が形成されている（図１参照）。 The operation pin 8 is arranged in the first space SP1 of the housing 9 so that the first surface (upper surface) in the height direction faces the gas generator 70. In the state where the operation pin 8 is arranged, an airtight space (pressurization chamber) is provided in the housing 9 so as to be surrounded by the recess 84 of the operation pin 8, the lower surface of the gas generator 70, and the inner surface of the recess 960. 75) is formed (see FIG. 1).
　動作ピン８の高さ（上下方向の寸法）は、第１空間ＳＰ１の上下方向の寸法よりも小さい。動作ピン８は、動作ピン８の移動方向の先端（第１導電体２の分離部２３と対向する面；下面）と第１導電体２との間に隙間（以下、「隙間空間ＳＰ１１」ともいう）を生じるように、ハウジング９の第１空間ＳＰ１内に配置されている。 The height of the operation pin 8 (vertical dimension) is smaller than the vertical dimension of the first space SP1. The operation pin 8 has a gap (hereinafter, also referred to as “gap space SP11”) between the tip of the operation pin 8 in the moving direction (the surface facing the separating portion 23 of the first conductor 2; the lower surface) and the first conductor 2. It is arranged in the first space SP1 of the housing 9 so as to generate (referred to as).
　第１導電体２において、分離部２３は、ハウジング９の内部空間９０内に位置している。図１に示すように、第１導電体２は、分離部２３が動作ピン８の下面と対向している。 In the first conductor 2, the separation portion 23 is located in the internal space 90 of the housing 9. As shown in FIG. 1, in the first conductor 2, the separating portion 23 faces the lower surface of the operation pin 8.
　第２導電体５において、分離部５３（底板部５０１において、２つの幅狭部５４の間の部分）は、ハウジング９の内部空間９０内に位置している。図１に示すように、第２導電体５は、分離部５３が動作ピン８の下面と対向している。 In the second conductor 5, the separation portion 53 (the portion between the two narrow portions 54 in the bottom plate portion 501) is located in the internal space 90 of the housing 9. As shown in FIG. 1, in the second conductor 5, the separating portion 53 faces the lower surface of the operation pin 8.
　図５に示すように、第１規制体４１は、ハウジング９の内部空間９０に配置されている。第１規制体４１は、第２空間ＳＰ２に配置されている。第１規制体４１は、ここでは樹脂製である。 As shown in FIG. 5, the first regulator 41 is arranged in the internal space 90 of the housing 9. The first regulator 41 is arranged in the second space SP2. The first regulator 41 is made of resin here.
　第１規制体４１は、円板状である。第１規制体４１の外径は、凹所９１０の径よりも大きい。第１規制体４１の外径は、溝９１１の径と略等しい。第１規制体４１は、溝９１１に嵌め込まれて、ハウジング９に保持されている。第１規制体４１は、内部空間９０を区分する。第１規制体４１は、第２空間ＳＰ２に配置され、第２空間ＳＰ２を、第１部分空間ＳＰ２１と第２部分空間ＳＰ２２とに区分している。 The first regulator 41 has a disk shape. The outer diameter of the first regulator 41 is larger than the diameter of the recess 910. The outer diameter of the first regulator 41 is substantially equal to the diameter of the groove 911. The first regulator 41 is fitted in the groove 911 and held in the housing 9. The first regulator 41 divides the internal space 90. The first regulator 41 is arranged in the second space SP2, and divides the second space SP2 into a first subspace SP21 and a second subspace SP22.
　第１規制体４１において動作ピン８と対向する面（上面）には、第１規制体４１の外縁と同心状の溝４１０が形成されている。溝４１０の径は、凹所９１０の径と略等しい。第１規制体４１は、厚さ方向（上下方向）に力を受けたとき、溝４１０の部分において破断しやすい。なお、溝４１０の径は、動作ピン８の下面の径と略等しくてもよい。 A groove 410 concentric with the outer edge of the first regulator 41 is formed on the surface (upper surface) of the first regulator 41 facing the operation pin 8. The diameter of the groove 410 is substantially equal to the diameter of the recess 910. The first regulator 41 is liable to break in the groove 410 when a force is applied in the thickness direction (vertical direction). The diameter of the groove 410 may be substantially equal to the diameter of the lower surface of the operation pin 8.
　第２規制体４２は、ハウジング９の内部空間９０に配置されている。第２規制体４２は、第１空間ＳＰ１に配置されている。第２規制体４２は、ここでは樹脂製である。 The second regulator 42 is arranged in the internal space 90 of the housing 9. The second regulator 42 is arranged in the first space SP1. The second regulator 42 is made of resin here.
　第２規制体４２は、円板状である。第２規制体４２の外径は、貫通孔９５０の径よりも大きい。第２規制体４２は、段差９５３に嵌め込まれて、第１ホルダ９５に保持されている。第２規制体４２は、動作ピン８と第１導電体２（分離部２３）との間に配置されている。第２規制体４２は、内部空間９０を区分する。第２規制体４２は、第１空間ＳＰ１に配置されており、第１空間ＳＰ１を、隙間空間ＳＰ１１と、動作ピン８が配置される配置空間ＳＰ１２と、に区分している。 The second regulator 42 has a disk shape. The outer diameter of the second regulator 42 is larger than the diameter of the through hole 950. The second regulator 42 is fitted in the step 953 and is held by the first holder 95. The second restrictor 42 is arranged between the operation pin 8 and the first conductor 2 (separation portion 23). The second regulator 42 divides the internal space 90. The second regulator 42 is arranged in the first space SP1, and the first space SP1 is divided into a gap space SP11 and an arrangement space SP12 in which the operation pin 8 is arranged.
　第２規制体４２において動作ピン８と対向する面（上面）には、第２規制体４２の外縁と同心状の溝４２０が形成されている。溝４２０の径は、動作ピン８の下面の径と略等しい。溝４２０は、動作ピン８の下面の外縁に対向している。第２規制体４２は、厚さ方向（上下方向）に力を受けたとき、溝４２０の部分において破断しやすい。 A groove 420 concentric with the outer edge of the second regulator 42 is formed on the surface (upper surface) of the second regulator 42 facing the operation pin 8. The diameter of the groove 420 is substantially equal to the diameter of the lower surface of the operating pin 8. The groove 420 faces the outer edge of the lower surface of the operating pin 8. The second regulator 42 is likely to break at the groove 420 when a force is applied in the thickness direction (vertical direction).
　図１に示すように、冷却体３は、ハウジング９の内部空間９０に配置されている。冷却体３は、電気絶縁性を有する。冷却体３は、内部空間９０内において、第１規制体４１と第２規制体４２との間に配置されている。 As shown in FIG. 1, the cooling body 3 is arranged in the internal space 90 of the housing 9. The cooling body 3 has electrical insulation. The cooling body 3 is arranged between the first regulating body 41 and the second regulating body 42 in the internal space 90.
　本実施形態の遮断装置１では、冷却体３は、内部空間９０における第１空間ＳＰ１、第２空間ＳＰ２、及び第３空間ＳＰ３に配置されている。すなわち、冷却体３は、内部空間９０において、第１導電体２（分離部２３）の厚さ方向（上下方向）の両側に配置されている。また、冷却体３は、内部空間９０において、第２導電体５（分離部５３）の厚さ方向（上下方向）の両側に配置されている。冷却体３は、第１導電体２の周囲に配置されている。冷却体３は、第１導電体２（分離部２３）と接している。また、冷却体３は、第２導電体５の周囲に配置されている。冷却体３は、第２導電体５（分離部５３）と接している。冷却体３は、動作ピン８の移動方向において、動作ピン８の投影領域に配置されている。 In the blocking device 1 of the present embodiment, the cooling body 3 is arranged in the first space SP1, the second space SP2, and the third space SP3 in the internal space 90. That is, the cooling bodies 3 are arranged on both sides of the first conductor 2 (separating portion 23) in the thickness direction (vertical direction) in the internal space 90. Further, the cooling bodies 3 are arranged on both sides of the second conductor 5 (separating portion 53) in the thickness direction (vertical direction) in the internal space 90. The cooling body 3 is arranged around the first conductor 2. The cooling body 3 is in contact with the first conductor 2 (separating portion 23). Further, the cooling body 3 is arranged around the second conductor 5. The cooling body 3 is in contact with the second conductor 5 (separating portion 53). The cooling body 3 is arranged in the projection region of the operating pin 8 in the moving direction of the operating pin 8.
　図１に示すように、冷却体３の少なくとも一部は、第２規制体４２と第１導電体２（分離部２３）との間の空間（隙間空間ＳＰ１１）に配置されている。すなわち、冷却体３の少なくとも一部は、分離部２３及び分離部５３のうちで動作ピン８に近い方（分離部２３）と、動作ピン８と、の間に配置されている。以下、隙間空間ＳＰ１１に配置されている冷却体３を、第１冷却体３１ともいう。第１冷却体３１は、隙間空間ＳＰ１１の全体に配置されている。 As shown in FIG. 1, at least a part of the cooling body 3 is arranged in the space (gap space SP11) between the second regulating body 42 and the first conductor 2 (separating portion 23). That is, at least a part of the cooling body 3 is arranged between the separation unit 23 and the separation unit 53, whichever is closer to the operation pin 8 (separation unit 23), and the operation pin 8. Hereinafter, the cooling body 3 arranged in the gap space SP11 is also referred to as a first cooling body 31. The first cooling body 31 is arranged in the entire gap space SP11.
　また、冷却体３の少なくとも一部は、第１規制体４１と第２導電体５（分離部５３）との間の空間（第１部分空間ＳＰ２１）に配置されている。すなわち、冷却体３の少なくとも一部は、分離部２３及び分離部５３のいずれよりも動作ピン８から離れた位置に、配置されている。以下、第１部分空間ＳＰ２１に配置されている冷却体３を、第２冷却体３２ともいう。第２冷却体３２は、第１部分空間ＳＰ２１の全体に配置されている。 Further, at least a part of the cooling body 3 is arranged in the space (first subspace SP21) between the first regulating body 41 and the second conductor 5 (separating portion 53). That is, at least a part of the cooling body 3 is arranged at a position farther from the operation pin 8 than any of the separating portion 23 and the separating portion 53. Hereinafter, the cooling body 3 arranged in the first subspace SP21 is also referred to as a second cooling body 32. The second cooling body 32 is arranged in the entire first subspace SP21.
　また、冷却体３の少なくとも一部は、第１導電体２（分離部２３）と第２導電体５（分離部５３）との間の空間（第３空間ＳＰ３）に配置されている。以下、第３空間ＳＰ３に配置されている冷却体３を、第３冷却体３３ともいう。第３冷却体３３は、第３空間ＳＰ３の全体に配置されている。 Further, at least a part of the cooling body 3 is arranged in the space (third space SP3) between the first conductor 2 (separation part 23) and the second conductor 5 (separation part 53). Hereinafter, the cooling body 3 arranged in the third space SP3 is also referred to as a third cooling body 33. The third cooling body 33 is arranged in the entire third space SP3.
　図示は省略するが、冷却体３は、第１導電体２の側面とハウジング９の内周面との間の空間にも配置されている。また、冷却体３は、第２導電体５の側面とハウジング９の内周面との間の空間にも配置されている。すなわち、冷却体３は、第１規制体４１と第２規制体４２との間の空間の全体に、配置（充填）されている。 Although not shown, the cooling body 3 is also arranged in the space between the side surface of the first conductor 2 and the inner peripheral surface of the housing 9. The cooling body 3 is also arranged in the space between the side surface of the second conductor 5 and the inner peripheral surface of the housing 9. That is, the cooling body 3 is arranged (filled) in the entire space between the first regulating body 41 and the second regulating body 42.
　本実施形態の冷却体３は、粒子状である。すなわち、冷却体３は、互いに結合していない多数（複数）の粒子３００を含む。冷却体３の材料は、金属酸化物又は無機酸化物の少なくとも一方を含む。ここでは、冷却体３の材料は、金属酸化物又は無機酸化物の少なくとも一方である。 The cooling body 3 of this embodiment is in the form of particles. That is, the cooling body 3 includes a large number (plurality) of particles 300 that are not bonded to each other. The material of the cooling body 3 contains at least one of a metal oxide and an inorganic oxide. Here, the material of the cooling body 3 is at least one of a metal oxide and an inorganic oxide.
　冷却体３の材料となる金属酸化物は、例えば、酸化アルミニウム、酸化ジルコニア、及び酸化鉄のうち少なくも１つを含む。また、冷却体３の材料となる無機酸化物は、例えば、酸化ケイ素、酸化亜鉛、及び酸化マグネシウムのうち少なくとも１つを含む。冷却体３の材料となる金属酸化物又は無機酸化物は、溶融してもガスを発生しない物質であることが好ましい。なお、「溶融してもガスを発生しない」とは、溶融しても全くガスを発生しないことに限らず、遮断装置１の性能に影響を与えない程度（例えば、内部空間９０の圧力を過度に上昇させない程度）であれば、僅かにガスを発生してもよい。 The metal oxide used as the material of the cooling body 3 contains, for example, at least one of aluminum oxide, zirconia oxide, and iron oxide. The inorganic oxide used as a material for the cooling body 3 contains, for example, at least one of silicon oxide, zinc oxide, and magnesium oxide. The metal oxide or inorganic oxide used as the material of the cooling body 3 is preferably a substance that does not generate gas even when melted. Note that "does not generate gas even when melted" does not mean that gas is not generated at all even when melted, and the pressure of the internal space 90 is excessively applied (for example, the pressure of the internal space 90 is excessively applied) so as not to affect the performance of the shutoff device 1. A small amount of gas may be generated as long as it does not increase.
　本実施形態の遮断装置１では、冷却体３の材料は、主成分として酸化アルミニウム（Ａｌ２Ｏ３）又は酸化ケイ素（ＳｉＯ２）を含む。本実施形態の遮断装置１では、冷却体３を構成する粒子３００は、アルミナ粒子である。冷却体３を構成する粒子３００の粒径に関して言えば、粒径が大きい程、粒子３００間の隙間が大きくなるが、冷却体３全体でみたときの表面積が小さくなる。逆に、粒径が小さいほど、冷却体３全体でみたときの表面積は大きくなるが、粒子３００間の隙間が小さくなる。そのため、冷却体３へのアークの接触しやすさの観点から、粒子３００の粒径は、大き過ぎず小さ過ぎない適切な範囲に設定されることが好ましい。冷却体３を構成する粒子３００の粒径は、例えば、０．３～１ｍｍ程度である。ここでの粒径は、平均値であるが、中間値であってもよい。また、冷却体３を構成する粒子３００は、球形に限らず、不定形であってもよい。 In the blocking device 1 of the present embodiment, the material of the cooling body 3 contains aluminum oxide (Al 2 O 3 ) or silicon oxide (SiO 2 ) as a main component. In the blocking device 1 of the present embodiment, the particles 300 constituting the cooling body 3 are alumina particles. Regarding the particle size of the particles 300 constituting the cooling body 3, the larger the particle size, the larger the gap between the particles 300, but the smaller the surface area of the cooling body 3 as a whole. On the contrary, the smaller the particle size, the larger the surface area of the cooling body 3 as a whole, but the smaller the gap between the particles 300. Therefore, from the viewpoint of the ease of contact of the arc with the cooling body 3, the particle size of the particles 300 is preferably set to an appropriate range that is neither too large nor too small. The particle size of the particles 300 constituting the cooling body 3 is, for example, about 0.3 to 1 mm. The particle size here is an average value, but may be an intermediate value. Further, the particles 300 constituting the cooling body 3 are not limited to a spherical shape, and may be an amorphous shape.
　第１冷却体３１と第２冷却体３２と第３冷却体３３とは、材料が互いに同じであってもよいし異なっていてもよい。本実施形態の遮断装置１では、第１冷却体３１と第２冷却体３２と第３冷却体３３とは、同じ材料（酸化アルミニウム）から形成される。 The materials of the first cooling body 31, the second cooling body 32, and the third cooling body 33 may be the same or different from each other. In the blocking device 1 of the present embodiment, the first cooling body 31, the second cooling body 32, and the third cooling body 33 are formed of the same material (aluminum oxide).
　第１冷却体３１と第２冷却体３２と第３冷却体３３とは、粒子３００の粒径（平均粒径）が互いに同じであってもよいし異なっていてもよい。本実施形態の遮断装置１では、第１冷却体３１及び第３冷却体３３の粒径は同じである。また、第１冷却体３１（及び第３冷却体３３）の方が、第２冷却体３２よりも、粒子３００の粒径が小さい。すなわち、冷却体３の粒径は、隙間（隙間空間ＳＰ１１）に配置される粒子（第１冷却体３１）及び第３空間ＳＰ３に配置される粒子（第３冷却体３３）の方が、収容空間ＳＰ２０に配置される粒子（第２冷却体３２）よりも、小さい。 The first cooling body 31, the second cooling body 32, and the third cooling body 33 may have the same or different particle size (average particle size) of the particles 300. In the blocking device 1 of the present embodiment, the particle sizes of the first cooling body 31 and the third cooling body 33 are the same. Further, the particle size of the particles 300 of the first cooling body 31 (and the third cooling body 33) is smaller than that of the second cooling body 32. That is, the particle size of the cooling body 3 is accommodated by the particles (first cooling body 31) arranged in the gap (gap space SP11) and the particles (third cooling body 33) arranged in the third space SP3. It is smaller than the particles (second cooling body 32) arranged in the space SP20.
　冷却体３は、第１規制体４１及び第２規制体４２によって、上下方向において移動可能な範囲が規定されている。すなわち、冷却体３は、第１規制体４１及び第２規制体４２によって、上下方向の移動が制限されている。要するに、遮断装置１は、ハウジング９の内部空間９０を区分し第１導電体２及び第２導電体５とは別体に設けられ、動作ピン８の移動方向における冷却体３の移動を制限する規制体（第１規制体４１、第２規制体４２）を備えている。 The range in which the cooling body 3 can be moved in the vertical direction is defined by the first regulating body 41 and the second regulating body 42. That is, the cooling body 3 is restricted from moving in the vertical direction by the first regulating body 41 and the second regulating body 42. In short, the blocking device 1 is provided separately from the first conductor 2 and the second conductor 5 by dividing the internal space 90 of the housing 9, and restricts the movement of the cooling body 3 in the moving direction of the operation pin 8. It is provided with a regulator (first regulator 41, second regulator 42).
　また、ハウジング９の内部空間９０における第１空間ＳＰ１内には、クッション部９７が配置されている。クッション部９７は、円環状である。クッション部９７は、ここでは、貫通孔９３０内において動作ピン８の第１柱状部８１の周囲を囲むように配置されている。クッション部９７は、例えば樹脂製である。クッション部９７は、第３ボディ９３のリブ９３２よりも柔らかいことが好ましい。 Further, the cushion portion 97 is arranged in the first space SP1 in the internal space 90 of the housing 9. The cushion portion 97 has an annular shape. Here, the cushion portion 97 is arranged so as to surround the circumference of the first columnar portion 81 of the operation pin 8 in the through hole 930. The cushion portion 97 is made of, for example, resin. The cushion portion 97 is preferably softer than the rib 932 of the third body 93.
　（１．３）動作
　次に、遮断装置１の動作について、図６～図９を参照して説明する。 (1.3) Operation Next, the operation of the blocking device 1 will be described with reference to FIGS. 6 to 9.
　ピン電極７２が通電されずガス発生器７０が駆動されていない場合、図６に示すように、端子部２１，２２は、第１経路（分離部２３を含む経路）及び第２経路（分離部５３を含む経路）の並列回路を介して、電気的に接続されている。そのため、第１導電体２及び第２導電体５は電路として機能し、第１導電体２及び第２導電体５には、端子部２１，２２に電気的に接続されている外部電路から供給される電流が流れる。なお、上述のように、第１経路の電気抵抗は、第２電路の電気抵抗よりも十分に小さい。そのため、第１経路と第２経路との並列回路で見れば、ほぼすべての電流が第１経路を通って流れ、第２経路にはほぼ電流が流れない。 When the pin electrode 72 is not energized and the gas generator 70 is not driven, as shown in FIG. 6, the terminal portions 21 and 22 have the first path (the path including the separation section 23) and the second path (the separation section). It is electrically connected via a parallel circuit (path including 53). Therefore, the first conductor 2 and the second conductor 5 function as electric circuits, and the first conductor 2 and the second conductor 5 are supplied to the first conductor 2 and the second conductor 5 from an external electric circuit electrically connected to the terminal portions 21 and 22. The current that is generated flows. As described above, the electric resistance of the first path is sufficiently smaller than the electric resistance of the second electric line. Therefore, when viewed in a parallel circuit of the first path and the second path, almost all the current flows through the first path, and almost no current flows in the second path.
　電動車両の制御部等が、２つのピン電極７２間に通電すると、ガス発生器７０が駆動されて、ピン電極７２に接続されている発熱素子７３が発熱する。この発熱素子７３で発生した熱によって燃料７４が点火され、燃料７４が燃焼してガスを発生する。ガスは、ケース７１において燃料７４を収容する内部空間の圧力を上昇させて、内部空間を構成する壁（下壁）を破断し、この破断した部分を通して加圧室７５に導入されて加圧室７５内の圧力を上昇させる。加圧室７５内のガスの圧力により、動作ピン８には、分離部２３に向かう向き（下向き）の力が作用する。 When the control unit of the electric vehicle or the like energizes between the two pin electrodes 72, the gas generator 70 is driven and the heat generating element 73 connected to the pin electrodes 72 generates heat. The heat generated by the heat generating element 73 ignites the fuel 74, and the fuel 74 burns to generate gas. The gas increases the pressure in the internal space accommodating the fuel 74 in the case 71, breaks the wall (lower wall) constituting the internal space, and is introduced into the pressurizing chamber 75 through the broken portion to be introduced into the pressurizing chamber 75. Increase the pressure within 75. Due to the pressure of the gas in the pressurizing chamber 75, a force acting in the direction (downward) toward the separation portion 23 acts on the operation pin 8.
　動作ピン８は、オーリング６５の摩擦力に抗して駆動されて下方（移動方向）に移動し、動作ピン８の下面が第２規制体４２を下方に押す。動作ピン８に押された第２規制体４２は、溝４２０において破断される（図７参照）。 The operation pin 8 is driven against the frictional force of the O-ring 65 and moves downward (movement direction), and the lower surface of the operation pin 8 pushes the second regulator 42 downward. The second regulator 42 pushed by the operating pin 8 is broken in the groove 420 (see FIG. 7).
　動作ピン８が下方へ移動すると、第２規制体４２を介して動作ピン８に押されることにより、第１冷却体３１は、動作ピン８の移動方向（下方）へ移動する。要するに、冷却体３（第１冷却体３１）は、動作ピン８の移動に連動して、動作ピン８の移動方向に移動する。 When the operation pin 8 moves downward, the first cooling body 31 moves in the moving direction (downward) of the operation pin 8 by being pushed by the operation pin 8 via the second regulator 42. In short, the cooling body 3 (first cooling body 31) moves in the moving direction of the operating pin 8 in conjunction with the movement of the operating pin 8.
　動作ピン８は下方へ移動し、（第２規制体４２及び第１冷却体３１を介して）第１導電体２の分離部２３を上方から押す。分離部２３が動作ピン８に押されることにより、図７に示すように、第１導電体２は、一方の端子部２１と分離部２３との境界部分２４０の溝２４、及び他方の端子部２２と分離部２３との境界部分２４０の溝２４において破断される。これにより、分離部２３が端子部２１，２２から切り離され、第１経路が遮断される。 The operation pin 8 moves downward and pushes the separating portion 23 of the first conductor 2 (via the second regulating body 42 and the first cooling body 31) from above. When the separation portion 23 is pushed by the operation pin 8, as shown in FIG. 7, the first conductor 2 has a groove 24 of a boundary portion 240 between one terminal portion 21 and the separation portion 23, and the other terminal portion. It is broken in the groove 24 of the boundary portion 240 between the 22 and the separating portion 23. As a result, the separation unit 23 is separated from the terminal units 21 and 22, and the first path is cut off.
　第１経路が遮断されると、端子部２１，２２間の電路は第２経路のみとなる。そのため、端子部２１，２２間の電気抵抗が増加し、端子部２１，２２間に流れる電流の大きさが減少する（限流）。なお、図７に示すように、分離部２３が分離を開始するとき、分離部５３は端子部５１，５２につながっている。すなわち、分離部２３が分離を開始するとき、第２導電体５における端子部５１，５２間は導通している。 When the first path is cut off, the electric line between the terminals 21 and 22 becomes only the second path. Therefore, the electric resistance between the terminal portions 21 and 22 increases, and the magnitude of the current flowing between the terminal portions 21 and 22 decreases (current limiting). As shown in FIG. 7, when the separation unit 23 starts separation, the separation unit 53 is connected to the terminal units 51 and 52. That is, when the separation portion 23 starts the separation, the terminal portions 51 and 52 of the second conductor 5 are conducting with each other.
　動作ピン８がさらに下方へ移動すると、第２規制体４２、第１冷却体３１及び分離部２３を介して動作ピン８に押されることにより、第３冷却体３３は、動作ピン８の移動方向（下方）へ移動する。要するに、冷却体３（第３冷却体３３）は、動作ピン８の移動に連動して、動作ピン８の移動方向に移動する。 When the operating pin 8 moves further downward, it is pushed by the operating pin 8 via the second regulating body 42, the first cooling body 31 and the separating portion 23, so that the third cooling body 33 moves in the moving direction of the operating pin 8. Move to (down). In short, the cooling body 3 (third cooling body 33) moves in the moving direction of the operating pin 8 in conjunction with the movement of the operating pin 8.
　動作ピン８が下方へ移動するにつれて、動作ピン８は、（第２規制体４２、第１冷却体３１、分離部２３、及び第３冷却体３３を介して）第２導電体５の分離部５３を上方から押す。分離部５３が動作ピン８に押されることにより、図８に示すように、第２導電体５は、一方の端子部５１と分離部５３との間の幅狭部５４、及び他方の端子部５２と分離部５３との間の幅狭部５４において破断される。これにより、分離部５３が端子部５１，５２から切り離され、第２経路が遮断される。 As the operating pin 8 moves downward, the operating pin 8 moves to the separating portion of the second conductor 5 (via the second regulator 42, the first cooling body 31, the separating portion 23, and the third cooling body 33). Push 53 from above. When the separation portion 53 is pushed by the operation pin 8, as shown in FIG. 8, the second conductor 5 has a narrow portion 54 between one terminal portion 51 and the separation portion 53, and the other terminal portion. It is broken at the narrow portion 54 between the 52 and the separation portion 53. As a result, the separation unit 53 is separated from the terminal units 51 and 52, and the second path is cut off.
　第２導電体５において、分離部５３が端子部５１，５２から切り離されると、第２導電体５において切り離された部分の間で、アークが発生する場合がある。アークは、例えば、端子部５１と分離部５３とをつなぐように、また、端子部５２と分離部５３とをつなぐように発生し得る。図８には、一方の端子部５１と分離部５３との間に発生するアークＡ１、及び他方の端子部５２と分離部５３との間に発生するアークＡ２を、点線で模式的に示してある。 In the second conductor 5, when the separation portion 53 is separated from the terminal portions 51 and 52, an arc may be generated between the separated portions in the second conductor 5. The arc can be generated, for example, so as to connect the terminal portion 51 and the separation portion 53, or to connect the terminal portion 52 and the separation portion 53. In FIG. 8, the arc A1 generated between one terminal portion 51 and the separation portion 53 and the arc A2 generated between the other terminal portion 52 and the separation portion 53 are schematically shown by dotted lines. is there.
　上述のように、分離部２３と分離部５３との間には、第３冷却体３３が存在する。そのため、アークＡ１，Ａ２は、第３冷却体３３の隙間内を通り、第３冷却体３３に接触し得る。第３冷却体３３に接触したアークＡ１，Ａ２は、第３冷却体３３に熱を吸収されて冷却される。これにより、アークＡ１，Ａ２の消弧が促進される。 As described above, the third cooling body 33 exists between the separating portion 23 and the separating portion 53. Therefore, the arcs A1 and A2 can pass through the gap of the third cooling body 33 and come into contact with the third cooling body 33. The arcs A1 and A2 in contact with the third cooling body 33 are cooled by absorbing heat by the third cooling body 33. As a result, the extinguishing of the arcs A1 and A2 is promoted.
　また、第２空間ＳＰ２の第１部分空間ＳＰ２１には、第２冷却体３２が存在する。アークＡ１，Ａ２の一部は、第２冷却体３２側にも回り込んで、第２冷却体３２に接触し得る。第２冷却体３２に接触したアークＡ１，Ａ２は、第２冷却体３２に熱を吸収されて冷却される。これにより、アークＡ１，Ａ２の消弧が促進される。 Further, the second cooling body 32 exists in the first subspace SP21 of the second space SP2. A part of the arcs A1 and A2 can wrap around to the second cooling body 32 side and come into contact with the second cooling body 32. The arcs A1 and A2 in contact with the second cooling body 32 are cooled by absorbing heat by the second cooling body 32. As a result, the extinguishing of the arcs A1 and A2 is promoted.
　なお、動作ピン８と分離部２３との間には、第１冷却体３１が存在する。動作ピン８がさらに下方へ移動すると、第１冷却体３１も動作ピン８に押されて下方へと移動し、第１冷却体３１がアークＡ１，Ａ２に接触し得る。第１冷却体３１に接触したアークＡ１，Ａ２は、第１冷却体３１に熱を吸収されて冷却される。これにより、アークＡ１，Ａ２の消弧が促進される。 The first cooling body 31 exists between the operating pin 8 and the separating portion 23. When the operating pin 8 moves further downward, the first cooling body 31 is also pushed by the operating pin 8 and moves downward, and the first cooling body 31 may come into contact with the arcs A1 and A2. The arcs A1 and A2 in contact with the first cooling body 31 are cooled by absorbing heat by the first cooling body 31. As a result, the extinguishing of the arcs A1 and A2 is promoted.
　要するに、冷却体３は、第２導電体５に電流が流れている状態で分離部５３が端子部５１，５２から分離されたときに発生するアークＡ１，Ａ２を、冷却する。これにより、アークＡ１，Ａ２の消弧が促進される。 In short, the cooling body 3 cools the arcs A1 and A2 generated when the separating portion 53 is separated from the terminal portions 51 and 52 while the current is flowing through the second conductor 5. As a result, the extinguishing of the arcs A1 and A2 is promoted.
　動作ピン８が下方へ移動すると、第２規制体４２、第１冷却体３１、分離部２３、第３冷却体３３、及び分離部５３を介して動作ピン８に押されることにより、第２冷却体３２は、動作ピン８の移動方向（下方）へ移動する。要するに、冷却体３（第２冷却体３２）は、動作ピン８の移動に連動して、動作ピン８の移動方向に移動する。 When the operation pin 8 moves downward, it is pushed by the operation pin 8 via the second regulator 42, the first cooling body 31, the separation unit 23, the third cooling body 33, and the separation unit 53, so that the second cooling is performed. The body 32 moves in the moving direction (downward) of the operation pin 8. In short, the cooling body 3 (second cooling body 32) moves in the moving direction of the operating pin 8 in conjunction with the movement of the operating pin 8.
　動作ピン８が下方へ移動するにつれて、動作ピン８は、（第２規制体４２、第１冷却体３１、分離部２３、第３冷却体３３、分離部５３、及び第２冷却体３２を介して）第１規制体４１を下方に押す。動作ピン８に押された第１規制体４１は、溝４１０において破断される。 As the operating pin 8 moves downward, the operating pin 8 passes through (the second regulator 42, the first cooling body 31, the separating unit 23, the third cooling body 33, the separating unit 53, and the second cooling body 32). Push the first regulator 41 downward. The first regulator 41 pushed by the operation pin 8 is broken in the groove 410.
　動作ピン８はさらに下方へ移動し、第２柱状部８２の下面がクッション部９７を介してリブ９３２の上面に接触することで、移動を停止する（図９参照）。つまり、動作ピン８は、ハウジング９によって、過度の移動が規制される。要するに、ハウジング９は、動作ピン８を収容する空間（第１空間ＳＰ１）に、動作ピン８の過度の移動を規制する規制部を備えている。 The operation pin 8 moves further downward, and the lower surface of the second columnar portion 82 comes into contact with the upper surface of the rib 932 via the cushion portion 97 to stop the movement (see FIG. 9). That is, the operation pin 8 is restricted from being excessively moved by the housing 9. In short, the housing 9 is provided with a regulating portion for restricting excessive movement of the operating pin 8 in the space (first space SP1) accommodating the operating pin 8.
　動作ピン８が移動を停止したとき、第１導電体２の２つ端子部２１，２２の間には、動作ピン８の第１柱状部８１が介在している。また、第２導電体５の２つ端子部５１，５２の間には、動作ピン８の第１柱状部８１が介在している。すなわち、端子部２１，２２間の電路が、動作ピン８（第１柱状部８１）によって電気的に絶縁される。 When the operation pin 8 stops moving, the first columnar portion 81 of the operation pin 8 is interposed between the two terminal portions 21 and 22 of the first conductor 2. Further, a first columnar portion 81 of the operation pin 8 is interposed between the two terminal portions 51 and 52 of the second conductor 5. That is, the electric circuit between the terminal portions 21 and 22 is electrically insulated by the operation pin 8 (first columnar portion 81).
　第２規制体４２、分離部２３、分離部５３、及び第１規制体４１は、ハウジング９の内部空間９０における第２空間ＳＰ２内に収容される（図９参照）。なお、冷却体３（第１冷却体３１、第２冷却体３２、及び第３冷却体３３）は、粒子状であり、第２空間ＳＰ２内で互いに混ざり合って収容される。そのため、図９では、冷却体３の図示を省略している。 The second regulator 42, the separator 23, the separator 53, and the first regulator 41 are housed in the second space SP2 in the internal space 90 of the housing 9 (see FIG. 9). The cooling bodies 3 (first cooling body 31, second cooling body 32, and third cooling body 33) are in the form of particles, and are mixed and housed in the second space SP2. Therefore, in FIG. 9, the illustration of the cooling body 3 is omitted.
　なお、例えば端子部２１，２２間にかかる電圧が大きい場合には、第１導電体２の分離部２３が端子部２１，２２から切り離されたときに、切り離された部分の間でアークが発生する場合がある。アークは、例えば、一方の端子部２１と分離部２３とをつなぐように、また、他方の端子部２２と分離部２３とをつなぐように発生し得る。 For example, when the voltage applied between the terminal portions 21 and 22 is large, when the separation portion 23 of the first conductor 2 is separated from the terminal portions 21 and 22, an arc is generated between the separated portions. May be done. The arc can be generated, for example, so as to connect one terminal portion 21 and the separation portion 23, and to connect the other terminal portion 22 and the separation portion 23.
　本実施形態の遮断装置１では、上述のように、動作ピン８と分離部２３との間に、第１冷却体３１が存在する。そのため、アークは、第１冷却体３１の隙間内を通り、第１冷却体３１に接触し得る。第１冷却体３１に接触したアークは、第１冷却体３１に熱を吸収されて冷却される。これにより、アークの消弧が促進される。また、分離部２３よりも下方には、第３冷却体３３及び第２冷却体３２が存在する。アークの一部は、第３冷却体３３及び第２冷却体３２側にも回り込んで、第３冷却体３３及び第２冷却体３２に接触し得る。これにより、アークの消弧が促進される。 In the blocking device 1 of the present embodiment, as described above, the first cooling body 31 exists between the operating pin 8 and the separating portion 23. Therefore, the arc can pass through the gap of the first cooling body 31 and come into contact with the first cooling body 31. The arc that comes into contact with the first cooling body 31 is cooled by absorbing heat by the first cooling body 31. This promotes the extinguishing of the arc. Further, below the separating portion 23, there are a third cooling body 33 and a second cooling body 32. A part of the arc can also wrap around to the third cooling body 33 and the second cooling body 32 side and come into contact with the third cooling body 33 and the second cooling body 32. This promotes the extinguishing of the arc.
　（１．４）利点
　上述のように、本実施形態の遮断装置１は、第１導電体２と並列に接続される第２導電体５を備えている。そして、動作ピン８によってまず第１導電体２が破断（第１経路が遮断）された後に、第２導電体５が破断（第２経路が遮断）される。そのため、本実施形態の遮断装置１は、例えば第２導電体５を備えていない遮断装置に比べて、電路が遮断される時に電路に流れている電流の大きさが小さくなる。そのため、遮断装置１は、例えば第２導電体５を備えていない遮断装置に比べて、アークの発生を抑制することが可能となる。 (1.4) Advantages As described above, the blocking device 1 of the present embodiment includes a second conductor 5 connected in parallel with the first conductor 2. Then, the first conductor 2 is first broken (the first path is cut off) by the operation pin 8, and then the second conductor 5 is broken (the second path is cut off). Therefore, the breaking device 1 of the present embodiment has a smaller current flowing through the electric circuit when the electric circuit is cut off than, for example, a breaking device not provided with the second conductor 5. Therefore, the breaking device 1 can suppress the generation of an arc as compared with a breaking device that does not include, for example, the second conductor 5.
　また、遮断装置１では、冷却体３が、動作ピン８の移動方向において動作ピン８の投影領域に配置されている。そのため、内部空間９０でアークが発生したとしても、冷却体３がこのアークに接触し易くなり、アークの消弧を促進することが可能となる。 Further, in the blocking device 1, the cooling body 3 is arranged in the projection region of the operating pin 8 in the moving direction of the operating pin 8. Therefore, even if an arc is generated in the internal space 90, the cooling body 3 can easily come into contact with the arc, and the arc can be extinguished.
　また、遮断装置１では、冷却体３が粒子状であるため、冷却体３の表面積を大きくすることができ、冷却体３にアークが接触しやすくなり、アークの消弧を更に促進することが可能となる。 Further, in the blocking device 1, since the cooling body 3 is in the form of particles, the surface area of the cooling body 3 can be increased, the arc can easily come into contact with the cooling body 3, and the arc extinguishing can be further promoted. It will be possible.
　なお、第２導電体５に電流が流れていない状態或いは第２導電体５に流れる電流の大きさが小さい状態で動作ピン８が駆動された場合には、第２導電体５が破断されたとしても、アークが発生しないこともあり得る。 When the operation pin 8 was driven in a state where no current was flowing through the second conductor 5 or when the magnitude of the current flowing through the second conductor 5 was small, the second conductor 5 was broken. However, it is possible that the arc does not occur.
　（２）変形例
　上述の実施形態は、本開示の様々な実施形態の一つに過ぎない。上述の実施形態は、本開示の目的を達成できれば、設計等に応じて種々の変更が可能である。以下、上述の実施形態の変形例を列挙する。以下に説明する変形例は、適宜組み合わせて適用可能である。なお、以下では、上記実施形態を「基本例」と呼ぶこともある。 (2) Modified Example The above-described embodiment is only one of the various embodiments of the present disclosure. The above-described embodiment 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. Hereinafter, modifications of the above-described embodiment will be listed. The modifications described below can be applied in combination as appropriate. In the following, the above embodiment may be referred to as a "basic example".
　（２．１）変形例１
　本変形例の遮断装置１Ａについて、図１０を参照して説明する。本変形例の遮断装置１Ａにおいて、基本例の遮断装置１と同様の構成については、同一の符号を付して適宜説明を省略する。 (2.1) Modification 1
The blocking device 1A of this modified example will be described with reference to FIG. In the blocking device 1A of the present modification, 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.
　図１０に示すように、遮断装置１Ａでは、冷却体３は、第２空間ＳＰ２（より詳細には、第１部分空間ＳＰ２１）及び第３空間ＳＰ３に配置されているが、第１空間ＳＰ１（隙間空間ＳＰ１１）には配置されていない。すなわち、冷却体３は、第２冷却体３２及び第３冷却体３３を含むが、第１冷却体３１（図６参照）を含まない。 As shown in FIG. 10, in the blocking device 1A, the cooling body 3 is arranged in the second space SP2 (more specifically, the first subspace SP21) and the third space SP3, but the first space SP1 (more specifically, the first space SP1). It is not arranged in the gap space SP11). That is, the cooling body 3 includes the second cooling body 32 and the third cooling body 33, but does not include the first cooling body 31 (see FIG. 6).
　また、遮断装置１Ａは、第２規制体４２の代わりに第３規制体４３を備えている。遮断装置１Ａでは、貫通孔９５０の段差９５３（図１０では図示省略）が貫通孔９５４の直上に形成されており、この段差９５３に第３規制体４３が嵌め込まれることで第３規制体４３がハウジング９に保持されている。第３規制体４３の下面は、第１導電体２（分離部２３）の上面に接していてもよい。また、動作ピン８Ａの下端は、貫通孔９５０に嵌め込まれている（動作ピン８Ａは、下端が貫通孔９５０に嵌め込まれる程度の長さを有している）。 Further, the blocking device 1A includes a third regulator 43 instead of the second regulator 42. In the blocking device 1A, a step 953 of the through hole 950 (not shown in FIG. 10) is formed directly above the through hole 954, and the third regulator 43 is fitted into the step 953 to form the third regulator 43. It is held in the housing 9. The lower surface of the third regulator 43 may be in contact with the upper surface of the first conductor 2 (separation portion 23). Further, the lower end of the operation pin 8A is fitted into the through hole 950 (the operation pin 8A has a length such that the lower end is fitted into the through hole 950).
　本変形例の遮断装置１Ａでも、遮断装置１と同様、冷却体３（第２冷却体３２及び第３冷却体３３）によって、アークの消弧を促進することが可能となる。また、第１冷却体３１を省略することで、構成の簡素化、及び製造コストの低減を図ることが可能となる。 In the breaking device 1A of this modified example, the cooling body 3 (the second cooling body 32 and the third cooling body 33) can promote the extinguishing of the arc as in the breaking device 1. Further, by omitting the first cooling body 31, it is possible to simplify the configuration and reduce the manufacturing cost.
　なお、第３規制体４３は、第１導電体２の下面に接するように、すなわち冷却体３（第３冷却体３３）と第１導電体２との間に、配置されていてもよい。また、第３規制体４３は、省略されてもよい。 The third regulator 43 may be arranged so as to be in contact with the lower surface of the first conductor 2, that is, between the cooling body 3 (third cooling body 33) and the first conductor 2. Further, the third regulator 43 may be omitted.
　（２．２）変形例２
　本変形例の遮断装置１Ｂについて、図１１を参照して説明する。本変形例の遮断装置１Ｂにおいて、基本例の遮断装置１と同様の構成については、同一の符号を付して適宜説明を省略する。 (2.2) Modification 2
The blocking device 1B of this modification will be described with reference to FIG. In the blocking device 1B of the present modification, 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.
　図１１に示すように、遮断装置１Ｂでは、冷却体３は、第１空間ＳＰ１（より詳細には、隙間空間ＳＰ１１）及び第３空間ＳＰ３に配置されているが、第２空間ＳＰ２（第１部分空間ＳＰ２１）には配置されていない。すなわち、冷却体３は、第１冷却体３１及び第３冷却体３３を含むが、第２冷却体３２（図６参照）を含まない。 As shown in FIG. 11, in the blocking device 1B, the cooling body 3 is arranged in the first space SP1 (more specifically, the gap space SP11) and the third space SP3, but the second space SP2 (first space SP2). It is not arranged in the subspace SP21). That is, the cooling body 3 includes the first cooling body 31 and the third cooling body 33, but does not include the second cooling body 32 (see FIG. 6).
　また、遮断装置１Ｂは、第１規制体４１の代わりに、第４規制体４４を備えている。第４規制体４４は、ハウジング９の第２ボディ９２の凹所９２１の底面に形成された円環状の溝に嵌め込まれ、第２導電体５の底板部５０１とともに第２ボディ９２と第１ホルダ９５との間に挟持されることで、ハウジング９に保持されている。第４規制体４４は、動作ピン８の移動方向における第３冷却体３３の移動を制限する。第４規制体４４の上面は、第２導電体５（分離部５３）の下面に接していてもよい。 Further, the blocking device 1B includes a fourth regulatory body 44 instead of the first regulatory body 41. The fourth regulator 44 is fitted into an annular groove formed in the bottom surface of the recess 921 of the second body 92 of the housing 9, and together with the bottom plate portion 501 of the second conductor 5, the second body 92 and the first holder. It is held in the housing 9 by being sandwiched between the 95 and the 95. The fourth regulator 44 restricts the movement of the third cooling body 33 in the moving direction of the operating pin 8. The upper surface of the fourth regulator 44 may be in contact with the lower surface of the second conductor 5 (separation portion 53).
　本変形例の遮断装置１Ｂでも、遮断装置１と同様、冷却体３（第１冷却体３１及び第３冷却体３３）によって、アークの消弧を促進することが可能となる。また、第２冷却体３２を省略することで、構成の簡素化、及び製造コストの低減を図ることが可能となる。 In the breaking device 1B of this modified example, the cooling body 3 (the first cooling body 31 and the third cooling body 33) can promote the extinguishing of the arc as in the breaking device 1. Further, by omitting the second cooling body 32, it is possible to simplify the configuration and reduce the manufacturing cost.
　なお、第４規制体４４は、第２導電体５の上面に接するように、すなわち第３冷却体３３と第２導電体５（分離部５３）との間に、配置されていてもよい。 The fourth regulator 44 may be arranged so as to be in contact with the upper surface of the second conductor 5, that is, between the third cooling body 33 and the second conductor 5 (separation portion 53).
　（２．３）変形例３
　図１２に示すように、遮断装置１Ｃでは、冷却体３は、第１空間ＳＰ１（より詳細には、隙間空間ＳＰ１１）及び第２空間ＳＰ２（より詳細には、第１部分空間ＳＰ２１）に配置されているが、第３空間ＳＰ３には配置されていない。そのため、第３空間ＳＰ３は、ブランクである。すなわち、冷却体３は、第１冷却体３１及び第２冷却体３２を含むが、第３冷却体３３（図６参照）を含まない。 (2.3) Modification 3
As shown in FIG. 12, in the blocking device 1C, the cooling body 3 is arranged in the first space SP1 (more specifically, the gap space SP11) and the second space SP2 (more specifically, the first subspace SP21). However, it is not arranged in the third space SP3. Therefore, the third space SP3 is blank. That is, the cooling body 3 includes the first cooling body 31 and the second cooling body 32, but does not include the third cooling body 33 (see FIG. 6).
　また、遮断装置１Ｂは、第３規制体４３及び第４規制体４４をさらに備えている。本変形例では、第３規制体４３は、例えば第１ホルダ９５を成型する際に、同時に（例えば二色成型によって）形成されてもよい。 Further, the blocking device 1B further includes a third regulatory body 43 and a fourth regulatory body 44. In this modification, the third regulator 43 may be formed at the same time (for example, by two-color molding) when the first holder 95 is molded, for example.
　本変形例の遮断装置１Ｂでも、遮断装置１と同様、冷却体３（第１冷却体３１、第２冷却体３２）によって、アークの消弧を促進することが可能となる。また、第３冷却体３３を省略することで、構成の簡素化、及び製造コストの低減を図ることが可能となる。 In the breaking device 1B of this modified example, the cooling body 3 (the first cooling body 31 and the second cooling body 32) can promote the extinguishing of the arc as in the breaking device 1. Further, by omitting the third cooling body 33, it is possible to simplify the configuration and reduce the manufacturing cost.
　（２．４）変形例４
　本変形例の遮断装置１Ｄについて、図１３を参照して説明する。本変形例の遮断装置１Ｄにおいて、基本例の遮断装置１と同様の構成については、同一の符号を付して適宜説明を省略する。 (2.4) Modification 4
The blocking device 1D of this modification will be described with reference to FIG. In the blocking device 1D of the present modification, the same configurations 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.
　図１３に示すように、遮断装置１Ｄでは、冷却体３は、多孔質体を有する。冷却体３を構成する多孔質体は、金属酸化物又は無機酸化物の少なくとも一方から構成される。多孔質体は、多数の微細な孔を有する一つの部材であってもよいし、自身又は他の部材との間に隙間を形成するように配置された一又は複数の部材（部材自体は孔を有していても有していなくてもよい）の集まりであってもよい。 As shown in FIG. 13, in the blocking device 1D, the cooling body 3 has a porous body. The porous body constituting the cooling body 3 is composed of at least one of a metal oxide and an inorganic oxide. The porous body may be one member having a large number of fine holes, or one or more members arranged so as to form a gap between itself or another member (the member itself is a hole). It may or may not have).
　より詳細には、本変形例の遮断装置１Ｄにおける多孔質体は、繊維状部材３０１の集まりである。つまり、本変形例の遮断装置１Ｄでは、冷却体３は、繊維状部材３０１を有する。繊維状部材３０１は、骨格となる紐状の部分から枝分かれした一又は複数の側鎖部分を更に備えていてもよい。 More specifically, the porous body in the blocking device 1D of this modified example is a collection of fibrous members 301. That is, in the blocking device 1D of the present modification, the cooling body 3 has the fibrous member 301. The fibrous member 301 may further include one or more side chain portions branched from a string-like portion serving as a skeleton.
　本変形例の遮断装置１Ｄでは、冷却体３が、互いの間に隙間を形成する繊維状部材３０１を備えているため、冷却体３は変形（圧縮）可能である。 In the blocking device 1D of this modification, the cooling body 3 is deformable (compressed) because the cooling body 3 includes a fibrous member 301 forming a gap between the cooling bodies 3.
　また、本変形例の遮断装置１Ｄは、第１規制体４１を備えておらず、第２空間ＳＰ２（図５参照）全体に第２冷却体３２が配置されている。 Further, the blocking device 1D of this modified example does not include the first restricting body 41, and the second cooling body 32 is arranged in the entire second space SP2 (see FIG. 5).
　本変形例の遮断装置１Ｄでは、動作ピン８が下方へ移動すると、動作ピン８に直接又は間接的に押されることにより、冷却体３が圧縮される。そのため、基本例の遮断装置１のような、移動後の冷却体３を収容するための空間（第２部分空間ＳＰ２２：図５参照）が不要である。そのため、本変形例の遮断装置１Ｄによれば、製造工程を簡略化し得る。 In the blocking device 1D of this modified example, when the operating pin 8 moves downward, the cooling body 3 is compressed by being pushed directly or indirectly by the operating pin 8. Therefore, a space (second subspace SP22: see FIG. 5) for accommodating the moved cooling body 3 as in the blocking device 1 of the basic example is unnecessary. Therefore, according to the blocking device 1D of the present modification, the manufacturing process can be simplified.
　本変形例の遮断装置１Ｄでも、遮断装置１と同様、冷却体３（第１冷却体３１、第２冷却体３２、第３冷却体３３）によって、アークの消弧を促進することが可能となる。 In the breaking device 1D of this modified example, it is possible to promote the extinguishing of the arc by the cooling body 3 (first cooling body 31, second cooling body 32, third cooling body 33) as in the breaking device 1. Become.
　もちろん、本変形例の遮断装置１Ｄでも、第１規制体４１、第３規制体４３、第４規制体４４等を備えていてもよい。 Of course, the blocking device 1D of this modification may also be provided with the first regulator 41, the third regulator 43, the fourth regulator 44, and the like.
　（２．５）その他の変形例
　一変形例において、遮断装置１は、冷却体３として、第１冷却体３１、第２冷却体３２、第３冷却体３３のうちのいずれかのみを備えていてもよい。ただし、アークＡ１，Ａ２の消弧を促進する観点から、遮断装置１は、第２導電体５の両側に冷却体３を備えていること、すなわち、第２冷却体３２と、第１冷却体３１及び第３冷却体３３のうちの少なくとも一方と、を備えていることが、好ましい。 (2.5) Other Modified Examples In one modified example, the blocking device 1 includes only one of the first cooling body 31, the second cooling body 32, and the third cooling body 33 as the cooling body 3. You may. However, from the viewpoint of promoting the extinguishing of the arcs A1 and A2, the blocking device 1 is provided with the cooling bodies 3 on both sides of the second conductor 5, that is, the second cooling body 32 and the first cooling body. It is preferable to include at least one of 31 and the third cooling body 33.
　一変形例において、第１冷却体３１は、隙間空間ＳＰ１１の全体に配置されていなくてもよい。同様に、第２冷却体３２は、第１部分空間ＳＰ２１の全体に配置されていなくてもよい。また、第３冷却体３３は、第３空間ＳＰ３の全体に配置されていなくてもよい。 In one modification, the first cooling body 31 does not have to be arranged in the entire gap space SP11. Similarly, the second cooling body 32 may not be arranged in the entire first subspace SP21. Further, the third cooling body 33 does not have to be arranged in the entire third space SP3.
　一変形例において、冷却体３は、互いに結合していない複数の粒子３００と、多孔質体（繊維状部材３０１）と、の両方を有していてもよい。 In one modification, the cooling body 3 may have both a plurality of particles 300 that are not bonded to each other and a porous body (fibrous member 301).
　一変形例において、動作ピン８，８Ａは、複数の部材から構成されていてもよい。動作ピン８，８Ａは、例えば、第１柱状部８１と、第２柱状部８２とが、異なる材料から形成される別の部材から構成されていてもよい。動作ピン８，８Ａにおいて、動作ピン８，８Ａの移動後に第１導電体２及び第２導電体５（端子部２１，２２、端子部５１，５２）と対向しない部分、例えば第２柱状部８２は、電気絶縁性を有していなくてもよい。 In one modification, the operation pins 8 and 8A may be composed of a plurality of members. In the operation pins 8 and 8A, for example, the first columnar portion 81 and the second columnar portion 82 may be composed of different members formed of different materials. In the operation pins 8 and 8A, portions that do not face the first conductor 2 and the second conductor 5 ( terminal portions 21 and 22, terminal portions 51 and 52) after the movement of the operation pins 8 and 8A, for example, the second columnar portion 82. Does not have to have electrical insulation.
　一変形例において、動作ピン８，８Ａの形状は、例示した形状に限られず、例えば任意の多角柱状等であってもよい。 In one modification, the shapes of the operation pins 8 and 8A are not limited to the illustrated shapes, and may be, for example, any polygonal columnar shape.
　一変形例において、溝２４の径及び動作ピン８，８Ａの径は、第１ホルダ９５の貫通孔９５０の径より小さくてもよい。すなわち、第１導電体２における境界部分２４０（第１導電体２において破断される部分）の全体がハウジング９の内部空間９０内に位置し、端子部２１の一部（分離部２３側の端部）及び端子部２２の一部（分離部２３側の端部）も、内部空間９０内に位置していてもよい。同様に、第２導電体５における幅狭部５４（第２導電体５において破断される部分）の全体がハウジング９の内部空間９０内に位置し、端子部５１の一部（分離部５３側の端部）及び端子部５２の一部（分離部５３側の端部）も、内部空間９０内に位置していてもよい。 In one modification, the diameter of the groove 24 and the diameter of the operation pins 8 and 8A may be smaller than the diameter of the through hole 950 of the first holder 95. That is, the entire boundary portion 240 (the portion broken in the first conductor 2) in the first conductor 2 is located in the internal space 90 of the housing 9, and a part of the terminal portion 21 (the end on the separation portion 23 side). The portion) and a part of the terminal portion 22 (the end portion on the separation portion 23 side) may also be located in the internal space 90. Similarly, the entire narrow portion 54 (the portion broken in the second conductor 5) in the second conductor 5 is located in the internal space 90 of the housing 9, and a part of the terminal portion 51 (separation portion 53 side). (End portion) and a part of the terminal portion 52 (end portion on the separation portion 53 side) may also be located in the internal space 90.
　一変形例において、冷却体３は、第１導電体２、第２導電体５と接していなくてもよい。 In one modification, the cooling body 3 does not have to be in contact with the first conductor 2 and the second conductor 5.
　一変形例において、溝２４は、第１導電体２の第１の面Ｆ１に代えて又は加えて、第２の面Ｆ２に形成されていてもよい。 In one modification, the groove 24 may be formed on the second surface F2 in place of or in addition to the first surface F1 of the first conductor 2.
　一変形例において、遮断装置１，１Ａ～１Ｄは、発生したアークを引き延ばすための永久磁石を備えていてもよい。永久磁石は、例えば、ハウジング９内の空間に配置されてもよいし、ハウジング９に埋め込まれていてもよい。 In one modification, the blocking devices 1, 1A to 1D may be provided with a permanent magnet for extending the generated arc. The permanent magnet may be arranged in the space inside the housing 9, or may be embedded in the housing 9, for example.
　一変形例において、端子部２１，２２、及び分離部２３は、一体の部材でなくてもよい。一変形例において、端子部５１，５２、及び分離部５３は、一体の部材でなくてもよい。 In one modification, the terminal portions 21 and 22 and the separation portion 23 do not have to be integral members. In one modification, the terminal portions 51, 52 and the separation portion 53 do not have to be integral members.
　一変形例において、動作ピン８，８Ａの投影領域以外の領域に、追加の冷却体が配置されてもよい。例えば、ハウジング９の第２空間ＳＰ２の内壁面に形成された凹所に、冷却体が配置されてもよい。 In one modification, an additional cooling body may be arranged in a region other than the projection region of the operating pins 8 and 8A. For example, the cooling body may be arranged in a recess formed in the inner wall surface of the second space SP2 of the housing 9.
　一変形例において、冷却体３の密度（充填率）は、動作ピン８の動作を阻害しない程度に適宜に設定され得る。 In one modification, the density (filling rate) of the cooling body 3 can be appropriately set so as not to interfere with the operation of the operating pin 8.
　一変形例において、分離部２３が端子部２１，２２から分離されるよりも前に、分離部５３が端子部５１，５２から分離されてもよい。例えば、動作ピン８、分離部５３、分離部２３が、この順に並んでいてもよい。なお、先に分離される分離部（この場合、分離部５３）を通る経路の方が、後に分離される分離部（この場合、分離部２３）を通る経路よりも、電気抵抗が小さいことが好ましい。 In one modification, the separation unit 53 may be separated from the terminals 51 and 52 before the separation unit 23 is separated from the terminals 21 and 22. For example, the operation pin 8, the separation unit 53, and the separation unit 23 may be arranged in this order. It should be noted that the path passing through the separation section (in this case, the separation section 53) separated first has a smaller electrical resistance than the path passing through the separation section (in this case, the separation section 23) separated later. preferable.
　一変形例において、ハウジング９は、内部空間９０を密閉するための適宜の追加のオーリング（例えば、第１ボディ９１と第２ボディ９２との間に配置されるオーリング）を備えていてもよい。 In one variant, the housing 9 may be provided with an appropriate additional O-ring (eg, an O-ring located between the first body 91 and the second body 92) to seal the interior space 90. Good.
　（３）まとめ
　以上説明した実施形態及び変形例等から以下の態様が開示されている。 (3) Summary The following aspects are disclosed from the embodiments and modifications described above.
　一態様の遮断装置１（１Ａ～１Ｄ）は、ガスを発生させるガス発生器７０と、内部空間９０を有するハウジング９と、内部空間９０に少なくとも一部が配置され、外部電路に接続される第１導電体２と、内部空間９０に少なくとも一部が配置され、第１導電体２と並列に接続される第２導電体５と、内部空間９０に配置され、第１導電体２および第２導電体５の上方に設けられ、ガス発生器７０で発生したガスの圧力により第１導電体２および第２導電体５に向かって移動する動作ピン８（８Ａ）と、内部空間９０に配置され、内部空間９０で発生するアークを冷却する冷却体３と、を備える。第１導電体２は、外部電路に接続される端子部２１と、外部電路に接続される端子部２２と、ハウジング９の内部空間９０に収容され、端子部２１と端子部２２とを接続する分離部２３と、を有し、動作ピン８（８Ａ）の移動によって、分離部２３は、端子部２１または端子部２２から切り離される。第２導電体５は、第１導電体２の端子部２１に接続される端子部５１と、第１導電体２の端子部２２に接続される端子部５２と、ハウジング９の内部空間９０に収容され、端子部５１と端子部５２とを接続する分離部５３と、を有し、動作ピン８（８Ａ）の移動によって、分離部５３は、端子部５１または端子部５２から切り離される。分離部２３及び分離部５３は、動作ピン８の下方に位置し、冷却体３は、動作ピン８の下方に設けられている。 One aspect of the shutoff device 1 (1A to 1D) is a gas generator 70 that generates gas, a housing 9 having an internal space 90, and a first portion of the internal space 90 that is at least partially arranged and connected to an external electric circuit. The first conductor 2 and the second conductor 5 which is arranged at least a part in the internal space 90 and is connected in parallel with the first conductor 2 and the first conductor 2 and the second conductor 5 which are arranged in the internal space 90. An operation pin 8 (8A) provided above the conductor 5 and moving toward the first conductor 2 and the second conductor 5 by the pressure of the gas generated by the gas generator 70, and arranged in the internal space 90. A cooling body 3 for cooling an arc generated in the internal space 90 is provided. The first conductor 2 is housed in the terminal portion 21 connected to the external electric circuit, the terminal portion 22 connected to the external electric circuit, and the internal space 90 of the housing 9, and connects the terminal portion 21 and the terminal portion 22. It has a separation unit 23, and the separation unit 23 is separated from the terminal unit 21 or the terminal unit 22 by the movement of the operation pin 8 (8A). The second conductor 5 is provided in the terminal portion 51 connected to the terminal portion 21 of the first conductor 2, the terminal portion 52 connected to the terminal portion 22 of the first conductor 2, and the internal space 90 of the housing 9. It has a separating portion 53 that is accommodated and connects the terminal portion 51 and the terminal portion 52, and the separating portion 53 is separated from the terminal portion 51 or the terminal portion 52 by the movement of the operation pin 8 (8A). The separation unit 23 and the separation unit 53 are located below the operation pin 8, and the cooling body 3 is provided below the operation pin 8.
　この態様によれば、内部空間９０内でのアークの発生を抑制することが可能となる。また、内部空間９０で発生したアークの消弧を促進することが可能となる。 According to this aspect, it is possible to suppress the generation of an arc in the internal space 90. In addition, it is possible to promote the extinguishing of the arc generated in the internal space 90.
　別の態様の遮断装置１（１Ａ，１Ｂ，１Ｄ）では、冷却体３の少なくとも一部（第３冷却体３３）は、分離部２３と分離部５３との間に設けられている。 In another aspect of the blocking device 1 (1A, 1B, 1D), at least a part of the cooling body 3 (third cooling body 33) is provided between the separating unit 23 and the separating unit 53.
　この態様によれば、内部空間９０内でのアークの発生を抑制することが可能となる。また、内部空間９０で発生したアークの消弧を促進することが可能となる。 According to this aspect, it is possible to suppress the generation of an arc in the internal space 90. In addition, it is possible to promote the extinguishing of the arc generated in the internal space 90.
　別の態様の遮断装置１（１Ｂ～１Ｄ）では、分離部２３が分離部５３の上方に位置し、冷却体３の少なくとも一部（第１冷却体３１）は、動作ピン８と分離部２３との間に設けられる。 In another aspect of the blocking device 1 (1B to 1D), the separation unit 23 is located above the separation unit 53, and at least a part of the cooling body 3 (first cooling body 31) is the operation pin 8 and the separation unit 23. It is provided between and.
　この態様によれば、内部空間９０内でのアークの発生を抑制することが可能となる。また、内部空間９０で発生したアークの消弧を促進することが可能となる。 According to this aspect, it is possible to suppress the generation of an arc in the internal space 90. In addition, it is possible to promote the extinguishing of the arc generated in the internal space 90.
　別の態様の遮断装置１（１Ａ～１Ｃ）では、冷却体３の少なくとも一部は、分離部２３及び分離部５３の下方に設けられている。 In another aspect of the blocking device 1 (1A to 1C), at least a part of the cooling body 3 is provided below the separating portion 23 and the separating portion 53.
　この態様によれば、内部空間９０内でのアークの発生を抑制することが可能となる。また、内部空間９０で発生したアークの消弧を促進することが可能となる。 According to this aspect, it is possible to suppress the generation of an arc in the internal space 90. In addition, it is possible to promote the extinguishing of the arc generated in the internal space 90.
　別の態様の遮断装置１（１Ａ～１Ｄ）では、上方から下方に向かって、動作ピン８（８Ａ）、分離部（２３）、及び分離部（５３）の順に並んでいる。 In another aspect of the blocking device 1 (1A to 1D), the operation pin 8 (8A), the separating portion (23), and the separating portion (53) are arranged in this order from the upper side to the lower side.
　この態様によれば、内部空間９０内でのアークの発生を抑制することが可能となる。また、内部空間９０で発生したアークの消弧を促進することが可能となる。 According to this aspect, it is possible to suppress the generation of an arc in the internal space 90. In addition, it is possible to promote the extinguishing of the arc generated in the internal space 90.
　別の態様の遮断装置１（１Ａ～１Ｄ）では、分離部２３が端子部２１または端子部２２から切り離されるとき、端子部２１および端子部２２は第２導電体５を介して導通している。 In another aspect of the blocking device 1 (1A to 1D), when the separating portion 23 is separated from the terminal portion 21 or the terminal portion 22, the terminal portion 21 and the terminal portion 22 are conducted via the second conductor 5. ..
　この態様によれば、分離部２３を介する電路が遮断される際に、端子部２１と端子部２２と間に流れている電流の大きさを小さくすることができ、内部空間９０内でのアークの発生を抑制することが可能となる。 According to this aspect, when the electric path through the separation portion 23 is cut off, the magnitude of the current flowing between the terminal portion 21 and the terminal portion 22 can be reduced, and the arc in the internal space 90 can be reduced. Can be suppressed.
　別の態様の遮断装置１（１Ａ～１Ｄ）では、第２導電体５の端子部５１の一方の端が、第１導電体２の端子部２１の第１部位に接続され、第２導電体５の端子部５２の一方の端が、第１導電体２の端子部２２の第２部位に接続される。分離部２３が端子部２１および端子部２２の両方に接続され、かつ、分離部５３が端子部５１および端子部５２の両方に接続されているとき、第１導電体２における第１部位と第２部位との間の電気抵抗は、第２導電体５における端子部５１の一方の端と端子部５２における一方の端との間の電気抵抗より小さい。 In another aspect of the blocking device 1 (1A to 1D), one end of the terminal portion 51 of the second conductor 5 is connected to the first portion of the terminal portion 21 of the first conductor 2, and the second conductor is connected. One end of the terminal portion 52 of 5 is connected to the second portion of the terminal portion 22 of the first conductor 2. When the separating portion 23 is connected to both the terminal portion 21 and the terminal portion 22, and the separating portion 53 is connected to both the terminal portion 51 and the terminal portion 52, the first portion and the first portion in the first conductor 2 are connected. The electrical resistance between the two portions is smaller than the electrical resistance between one end of the terminal portion 51 of the second conductor 5 and one end of the terminal portion 52.
　この態様によれば、端子部２１と端子部２２間の分離部２３を介する電路が遮断される際に、端子部２１と端子部２２との間に流れている電流の大きさを小さくすることができ、内部空間９０内でのアークの発生を抑制することが可能となる。 According to this aspect, when the electric path via the separation portion 23 between the terminal portion 21 and the terminal portion 22 is cut off, the magnitude of the current flowing between the terminal portion 21 and the terminal portion 22 is reduced. This makes it possible to suppress the generation of an arc in the internal space 90.
　別の態様の遮断装置１（１Ａ～１Ｄ）は、内部空間９０を分離する第１規制体４１と、内部空間を分離する第２規制体４２と、を更に備える。内部空間９０は、第１空間ＳＰ１、第２空間ＳＰ２、第３空間ＳＰ３を含み、上方から下方に向かって、第１空間ＳＰ１、第３空間ＳＰ３、第２空間ＳＰ２の順に並んでいる。第１規制体４１は第２空間ＳＰ２を分離するように第２空間ＳＰ２内に配置され、第２規制体４２は第１空間ＳＰ１を分離するように第１空間ＳＰ１内に配置され、第１規制体４１と第２規制体４２との間に、分離部２３、分離部５３、および冷却体３は、設けられ、動作ピン８（８Ａ）は第２規制体４２の上方に配置されている。 The blocking device 1 (1A to 1D) of another aspect further includes a first regulator 41 that separates the internal space 90 and a second regulator 42 that separates the internal space. The internal space 90 includes the first space SP1, the second space SP2, and the third space SP3, and is arranged in the order of the first space SP1, the third space SP3, and the second space SP2 from the upper side to the lower side. The first regulator 41 is arranged in the second space SP2 so as to separate the second space SP2, and the second regulator 42 is arranged in the first space SP1 so as to separate the first space SP1. A separation unit 23, a separation unit 53, and a cooling body 3 are provided between the regulation body 41 and the second regulation body 42, and the operation pin 8 (8A) is arranged above the second regulation body 42. ..
　この態様によれば、冷却体３を所望の位置に保持しやすくなる。そのため、遮断装置１（１Ａ～１Ｄ）の取り扱い性が向上する。 According to this aspect, it becomes easy to hold the cooling body 3 in a desired position. Therefore, the handleability of the blocking device 1 (1A to 1D) is improved.
　別の態様の遮断装置１（１Ａ～１Ｃ）では、冷却体３は、複数の粒子３００を有する。 In another aspect of the blocking device 1 (1A to 1C), the cooling body 3 has a plurality of particles 300.
　この態様によれば、冷却体３の表面積を大きくすることができ、冷却体３にアークが接触しやすくなり、アークの消弧を促進することが可能となる。 According to this aspect, the surface area of the cooling body 3 can be increased, the arc can easily come into contact with the cooling body 3, and the arc extinguishing can be promoted.
　別の態様の遮断装置１Ｄでは、冷却体３は、多孔質体を有する。 In another aspect of the blocking device 1D, the cooling body 3 has a porous body.
　この態様によれば、冷却体３の表面積を大きくすることができ、冷却体３にアークが接触しやすくなり、アークの消弧を促進することが可能となる。 According to this aspect, the surface area of the cooling body 3 can be increased, the arc can easily come into contact with the cooling body 3, and the arc extinguishing can be promoted.
　別の態様の遮断装置１Ｄでは、冷却体３は、繊維状部材３０１を有する。 In another aspect of the blocking device 1D, the cooling body 3 has a fibrous member 301.
　この態様によれば、冷却体３の表面積を大きくすることができ、冷却体３にアークが接触しやすくなり、アークの消弧を促進することが可能となる。また、冷却体３の変形または圧縮が容易となる。 According to this aspect, the surface area of the cooling body 3 can be increased, the arc can easily come into contact with the cooling body 3, and the arc extinguishing can be promoted. In addition, the cooling body 3 can be easily deformed or compressed.
　１，１Ａ～１Ｄ　遮断装置
　２　第１導電体
　２１，２２　端子部
　２３　分離部
　２４　溝
　２４０　境界部分
　３　冷却体
　３１　第１冷却体
　３２　第２冷却体
　３３　第３冷却体
　３００　粒子
　３０１　繊維状部材
　４１　第１規制体（規制体）
　４２　第２規制体（規制体）
　４３　第３規制体（規制体）
　４４　第４規制体（規制体）
　５　第２導電体
　５０１　底板部
　５１，５２　端子部
　５３　分離部
　５４　幅狭部
　５１０　第１端
　５２０　第２端
　７０　ガス発生器
　７４　燃料
　８，８Ａ　動作ピン
　９　ハウジング
　９０　内部空間
　９５　第１ホルダ
　９６　第２ホルダ
　ＳＰ１　第１空間
　ＳＰ２　第２空間
　ＳＰ３　第３空間 1,1A to 1D blocking device 2 1st conductor 21 and 22 terminal part 23 separation part 24 groove 240 boundary part 3 cooling body 31 1st cooling body 32 2nd cooling body 33 3rd cooling body 300 particles 301 fibrous member 41 1st regulator (regulator)
42 Second regulatory body (regulatory body)
43 Third regulatory body (regulatory body)
44 Fourth Regulator (Regulator)
5 Second conductor 501 Bottom plate 51, 52 Terminal 53 Separation 54 Narrow 510 First end 520 Second end 70 Gas generator 74 Fuel 8,8A Operating pin 9 Housing 90 Internal space 95 First holder 96th 2 holder SP1 1st space SP2 2nd space SP3 3rd space

Claims (11)

  1. 　ガスを発生させるガス発生器と、
    　内部空間を有するハウジングと、
    　前記内部空間に少なくとも一部が配置され、外部電路に接続される第１導電体と、
    　前記内部空間に少なくとも一部が配置され、前記第１導電体と並列に接続される第２導電体と、
    　前記内部空間に配置され、前記第１導電体および前記第２導電体の上方に設けられ、前記ガス発生器で発生した前記ガスの圧力により前記第１導電体および前記第２導電体に向かって移動する動作ピンと、
    　前記内部空間に配置され、前記内部空間で発生するアークを冷却する冷却体と、
    を備え、
    　前記第１導電体は、
    　　前記外部電路に接続される第１端子部と、
    　　前記外部電路に接続される第２端子部と、
    　　前記ハウジングの前記内部空間に収容され、前記第１端子部と前記第２端子部とを接続する第１分離部と、
    　を有し、
    　前記動作ピンの移動によって、前記第１分離部は、前記第１端子部または前記第２端子部から切り離され、
    　前記第２導電体は、
    　　前記第１導電体の前記第１端子部に接続される第３端子部と、
    　　前記第１導電体の前記第２端子部に接続される第４端子部と、
    　　前記ハウジングの前記内部空間に収容され、前記第３端子部と前記第４端子部とを接続する第２分離部と、
    　を有し、
    　前記動作ピンの移動によって、前記第２分離部は、前記第３端子部または前記第４端子部から切り離され、
    　前記第１分離部及び前記第２分離部は、前記動作ピンの下方に位置し、
    　前記冷却体は、前記動作ピンの下方に設けられている、
    　遮断装置。     A gas generator that generates gas and
    A housing with an internal space and
    A first conductor, which is at least partially arranged in the internal space and is connected to an external electric circuit,
    A second conductor, at least a part of which is arranged in the internal space and connected in parallel with the first conductor,
    It is arranged in the internal space, is provided above the first conductor and the second conductor, and is directed toward the first conductor and the second conductor by the pressure of the gas generated by the gas generator. Moving motion pins and
    A cooling body arranged in the internal space and cooling an arc generated in the internal space,
    With
    The first conductor is
    The first terminal portion connected to the external electric circuit and
    The second terminal portion connected to the external electric circuit and
    A first separation portion housed in the internal space of the housing and connecting the first terminal portion and the second terminal portion,
    Have,
    By the movement of the operation pin, the first separation portion is separated from the first terminal portion or the second terminal portion.
    The second conductor is
    A third terminal portion connected to the first terminal portion of the first conductor, and a third terminal portion.
    A fourth terminal portion connected to the second terminal portion of the first conductor, and
    A second separation portion housed in the internal space of the housing and connecting the third terminal portion and the fourth terminal portion, and
    Have,
    By the movement of the operation pin, the second separation portion is separated from the third terminal portion or the fourth terminal portion.
    The first separation part and the second separation part are located below the operation pin.
    The cooling body is provided below the operating pin.
    Breaking device.
  2. 　前記冷却体の少なくとも一部は、前記第１分離部と前記第２分離部との間に設けられている、
    　請求項１に記載の遮断装置。     At least a part of the cooling body is provided between the first separating portion and the second separating portion.
    The blocking device according to claim 1.
  3. （１）前記第１分離部が前記第２分離部の上方に位置し、前記冷却体の少なくとも一部は、前記動作ピンと前記第１分離部との間に設けられる、
    　または、
    （２）前記第２分離部が前記第１分離部の上方に位置し、前記冷却体の少なくとも一部は、前記動作ピンと前記第２分離部との間に設けられる、
    　請求項１又は２に記載の遮断装置。     (1) The first separation portion is located above the second separation portion, and at least a part of the cooling body is provided between the operation pin and the first separation portion.
    Or
    (2) The second separation portion is located above the first separation portion, and at least a part of the cooling body is provided between the operation pin and the second separation portion.
    The blocking device according to claim 1 or 2.
  4. 　前記冷却体の少なくとも一部は、前記第１分離部及び前記第２分離部の下方に設けられている、
    　請求項１～３のいずれか１項に記載の遮断装置。     At least a part of the cooling body is provided below the first separation portion and the second separation portion.
    The blocking device according to any one of claims 1 to 3.
  5. 　上方から下方に向かって、前記動作ピン、前記第１分離部、及び前記第２分離部の順に並んでいる、
    　請求項１～４のいずれか１項に記載の遮断装置。     From the top to the bottom, the operation pin, the first separation part, and the second separation part are arranged in this order.
    The blocking device according to any one of claims 1 to 4.
  6. 　前記第１分離部が前記第１端子部または前記第２端子部から切り離されるとき、前記第１端子部および前記第２端子部は前記第２導電体を介して導通している、
    　請求項５に記載の遮断装置。     When the first separation portion is separated from the first terminal portion or the second terminal portion, the first terminal portion and the second terminal portion are conducted via the second conductor.
    The blocking device according to claim 5.
  7. 　前記第２導電体の前記第３端子部の一方の端が、前記第１導電体の前記第１端子部の第１部位に接続され、
    　前記第２導電体の前記第４端子部の一方の端が、前記第１導電体の前記第２端子部の第２部位に接続され、
    　前記第１分離部が前記第１端子部および前記第２端子部の両方に接続され、かつ、前記第２分離部が前記第３端子部および前記第４端子部の両方に接続されているとき、前記第１導電体における前記第１部位と前記第２部位との間の電気抵抗は、前記第２導電体における前記第３端子部の前記一方の端と前記第４端子部における前記一方の端との間の電気抵抗より小さい、
    　請求項１～６のいずれか１項に記載の遮断装置。     One end of the third terminal portion of the second conductor is connected to the first portion of the first terminal portion of the first conductor.
    One end of the fourth terminal portion of the second conductor is connected to the second portion of the second terminal portion of the first conductor.
    When the first separation portion is connected to both the first terminal portion and the second terminal portion, and the second separation portion is connected to both the third terminal portion and the fourth terminal portion. The electrical resistance between the first portion and the second portion of the first conductor is the one end of the third terminal portion of the second conductor and the one end of the fourth terminal portion of the second conductor. Less than the electrical resistance between the edges,
    The blocking device according to any one of claims 1 to 6.
  8. 　前記内部空間を分離する第１規制体と、
    　前記内部空間を分離する第２規制体と、
    を更に備え、
    　前記内部空間は、第１空間、第２空間、第３空間を含み、
    　上方から下方に向かって、第１空間、第３空間、第２空間の順に並んでおり、
    　前記第１規制体は前記第２空間を分離するように前記第２空間内に配置され、
    　前記第２規制体は前記第1空間を分離するように前記第１空間内に配置され、
    　前記第１規制体と前記第２規制体との間に、前記第１分離部、前記第２分離部、および前記冷却体は、設けられ、
    　前記動作ピンは前記第２規制体の上方に配置されている、
    　請求項１～７のいずれか１項に記載の遮断装置。     The first regulator that separates the internal space and
    The second regulator that separates the internal space and
    Further prepare
    The internal space includes a first space, a second space, and a third space.
    From the top to the bottom, the first space, the third space, and the second space are arranged in this order.
    The first regulator is arranged in the second space so as to separate the second space.
    The second regulator is arranged in the first space so as to separate the first space.
    The first separating portion, the second separating portion, and the cooling body are provided between the first regulating body and the second regulating body.
    The operating pin is located above the second regulator,
    The blocking device according to any one of claims 1 to 7.
  9. 　前記冷却体は、複数の粒子を有する、
    　請求項１～８のいずれか１項に記載の遮断装置。     The cooling body has a plurality of particles.
    The blocking device according to any one of claims 1 to 8.
  10. 　前記冷却体は、多孔質体を有する、
    　請求項１～９のいずれか１項に記載の遮断装置。     The cooling body has a porous body.
    The blocking device according to any one of claims 1 to 9.
  11. 　前記冷却体は、繊維状部材を有する、
    　請求項１～１０のいずれか１項に記載の遮断装置。     The cooling body has a fibrous member.
    The blocking device according to any one of claims 1 to 10.
PCT/JP2020/044692 2019-12-27 2020-12-01 Cutoff device WO2021131535A1 (en)

Applications Claiming Priority (2)

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JP2019239858A JP7390552B2 (en) 2019-12-27 2019-12-27 Shutoff device
JP2019-239858 2019-12-27

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WO2021131535A1 true WO2021131535A1 (en) 2021-07-01

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Publication number Priority date Publication date Assignee Title
WO2023218715A1 (en) * 2022-05-13 2023-11-16 太平洋精工株式会社 Electric circuit breaker device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7413064B2 (en) 2020-02-14 2024-01-15 株式会社ダイセル electrical circuit interrupter

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JP2017507469A (en) * 2014-02-04 2017-03-16 オートリブ ディベロプメント エービー Pyrotechnic circuit breaker
JP2019029152A (en) * 2017-07-28 2019-02-21 株式会社ダイセル Electric circuit breaker device having parallel circuit
JP2019515476A (en) * 2016-05-16 2019-06-06 アリアングループ・エス・ア・エス Circuit breaker device for connection to electrical circuits
JP2020161468A (en) * 2019-03-20 2020-10-01 パナソニックＩｐマネジメント株式会社 Breaker device

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Publication number Priority date Publication date Assignee Title
JP2017507469A (en) * 2014-02-04 2017-03-16 オートリブ ディベロプメント エービー Pyrotechnic circuit breaker
JP2019515476A (en) * 2016-05-16 2019-06-06 アリアングループ・エス・ア・エス Circuit breaker device for connection to electrical circuits
JP2019029152A (en) * 2017-07-28 2019-02-21 株式会社ダイセル Electric circuit breaker device having parallel circuit
JP2020161468A (en) * 2019-03-20 2020-10-01 パナソニックＩｐマネジメント株式会社 Breaker device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023218715A1 (en) * 2022-05-13 2023-11-16 太平洋精工株式会社 Electric circuit breaker device

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