WO2021131535A1 - Dispositif de coupure - Google Patents

Dispositif de coupure 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
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English (en)
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
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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/fr

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

Definitions

  • the present disclosure relates to a breaking device, and more specifically, to a breaking device that cuts off an electric circuit.
  • the circuit breaker described in Patent Document 1 includes at least one conductor designed to be connected to an electric circuit, a housing, a matrix, a punch, and an actuator using a pyrotechnic. ..
  • the actuator is designed to move the punch from a first position to a second position when ignited.
  • the punch and matrix break at least one conductor into at least two separate parts as the punch moves from the first position to the second position.
  • 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

La présente invention comprend : un générateur de gaz destiné à générer du gaz ; un boîtier comportant un espace interne ; un premier conducteur, dont au moins une partie est placée dans l'espace interne, et qui est connecté à un trajet électrique externe ; un second conducteur dont au moins une partie est placée dans l'espace interne, et qui est connecté en parallèle au premier conducteur ; une broche d'actionnement qui est placée dans l'espace interne, qui est disposée au-dessus des premier et second conducteurs, et qui se déplace vers les premier et second conducteurs en raison de la pression du gaz généré par le générateur de gaz ; et un corps de refroidissement qui est placé dans l'espace interne et qui refroidit un arc généré dans l'espace interne. Une partie de séparation du premier conducteur et une partie de séparation du second conducteur sont positionnées sous la broche d'actionnement, et le corps de refroidissement est placé au-dessous de la broche d'actionnement.
PCT/JP2020/044692 2019-12-27 2020-12-01 Dispositif de coupure WO2021131535A1 (fr)

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JP2019239858A JP7390552B2 (ja) 2019-12-27 2019-12-27 遮断装置
JP2019-239858 2019-12-27

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WO2023218715A1 (fr) * 2022-05-13 2023-11-16 太平洋精工株式会社 Dispositif de disjoncteur électrique

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Publication number Priority date Publication date Assignee Title
JP7413064B2 (ja) 2020-02-14 2024-01-15 株式会社ダイセル 電気回路遮断装置

Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2017507469A (ja) * 2014-02-04 2017-03-16 オートリブ ディベロプメント エービー パイロテクニック回路遮断器
JP2019029152A (ja) * 2017-07-28 2019-02-21 株式会社ダイセル 並列回路を有する電気回路遮断装置
JP2019515476A (ja) * 2016-05-16 2019-06-06 アリアングループ・エス・ア・エス 電気回路への接続のための遮断器装置
JP2020161468A (ja) * 2019-03-20 2020-10-01 パナソニックＩｐマネジメント株式会社 遮断装置

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2017507469A (ja) * 2014-02-04 2017-03-16 オートリブ ディベロプメント エービー パイロテクニック回路遮断器
JP2019515476A (ja) * 2016-05-16 2019-06-06 アリアングループ・エス・ア・エス 電気回路への接続のための遮断器装置
JP2019029152A (ja) * 2017-07-28 2019-02-21 株式会社ダイセル 並列回路を有する電気回路遮断装置
JP2020161468A (ja) * 2019-03-20 2020-10-01 パナソニックＩｐマネジメント株式会社 遮断装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023218715A1 (fr) * 2022-05-13 2023-11-16 太平洋精工株式会社 Dispositif de disjoncteur électrique

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