Circuit breaking device

Abstract

A circuit breaking device (1) used in a high-voltage circuit is provided with: an igniter (20) provided in a housing (10); an emitter (40) that is emitted in a prescribed emission direction along the accommodation space in the housing by energy received from the igniter; a pair of energizing parts (30) configured to be electrically connected and released when the igniter is operated and the emitter is emitted; and an arc extinguishing material (50) disposed in the predetermined region.

Description

Technical Field

[0001] The invention relates to a circuit breaker device. Background Art

[0002] In a circuit, a circuit breaker is sometimes provided, which operates to urgently cut off the conduction in the circuit when an abnormality occurs in a device constituting the circuit or a system equipped with the circuit. As one solution, a circuit breaker is proposed, which separates a conductive metal from a part of the circuit by energy imparted by an igniter, etc., thereby cutting off the circuit (for example, refer to Patent Document 1, etc.). In addition, in recent years, the importance of circuit breaker devices used in electric vehicles equipped with high-voltage power supplies has been increasing.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2009-99559 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In reality, an arc is easily generated when a conductor forming a part of a circuit is separated in a circuit breaker. Once an arc is generated, the circuit cannot be quickly interrupted, so it is required to quickly extinguish the generated arc in the circuit breaker.

[0008] Furthermore, when the circuit breaker is operating, the gas generated from the igniter is high temperature and often ionized. The generated high temperature gas often covers the conductive metal part, and even if the conductive metal is separated, it may be electrically conductive due to being covered by the ionized gas.

[0009] The technology disclosed in the present invention has been accomplished in view of the above-mentioned actual situation, and an object thereof is to provide a circuit breaker device that can quickly extinguish an arc generated during operation.

[0010] Solutions for solving problems

[0011] In order to solve the above-mentioned problems, the circuit breaker device of the present invention comprises: a shell; an igniter, which is arranged in the shell; a first storage space, which is formed in the shell and extends in one direction; a projectile, which is positioned at a first position of the first storage space before the igniter works, and is launched in a specified launch direction along the first storage space by the energy received from the igniter when the igniter works, and the projectile includes a conductive member with conductivity; a pair of current-carrying parts, which are arranged in the shell and form a part of the circuit, and the pair of current-carrying parts are configured to be electrically connected via the conductive member of the projectile located at the first position before the igniter works, and the electrical connection is released when the igniter works and the projectile is launched; and an arc-extinguishing material, which is arranged in a specified area before the igniter works, and the circuit breaker device is configured to discharge the arc-extinguishing material from the specified area by the impact generated by the emission of the projectile when the igniter works, and to cover at least a part of the projectile with the discharged arc-extinguishing material.

[0012] In addition, the circuit breaker device of the present disclosure may include: a second storage space, which is formed on the outside of the first storage space as the specified area and is provided in the shell; and a first connecting portion, which connects the first storage space with the second storage space, and before the igniter works, the first connecting portion is blocked by the projectile located at the first position, and the projectile is emitted by the operation of the igniter, thereby opening the first connecting portion and discharging the arc extinguishing material from the second storage space to the first storage space.

[0013] Furthermore, the circuit breaking device of the present disclosure may further include a second connecting portion that connects a region of the first storage space on the front side of the emitter in the emitting direction with the second storage space.

[0014] Furthermore, when the emitter is emitted by the operation of the igniter, the arc extinguishing material may be accommodated in a region of the first accommodation space that is closer to the front side than the emitter in the emission direction.

[0015] In addition, it may also be that the pair of current-carrying parts are arranged separately from each other in the launching direction, the first current-carrying part on the front side of the launching direction of the pair of current-carrying parts has a first cylindrical socket extending along the launching direction, and the second current-carrying part on the front side of the launching direction of the pair of current-carrying parts has a second cylindrical socket extending along the launching direction, the first accommodating space is defined by the first socket and the second socket, and before the igniter works, the launcher is embedded in the first socket and the second socket in such a manner that the first socket and the second socket are electrically connected via the conductive member.

[0016] Furthermore, before the igniter is actuated, the conductive member may be pressed into at least one of the first socket and the second socket.

[0017] Furthermore, before the igniter is operated, the conductive member may be bonded to at least one of the first socket and the second socket.

[0018] Furthermore, before the igniter is operated, at least one of the first socket and the second socket may be integrally connected to the conductive member.

[0019] Furthermore, the projectile may include a piston, the piston being disposed on the front side of the conductive member in the projecting direction, and the piston being projected in the projecting direction by energy received from the igniter when the igniter is operated.

[0020] Furthermore, the predetermined region may be included in the piston.

[0021] Furthermore, the arc-extinguishing material may be formed of an inorganic oxide.

[0022] Furthermore, the arc extinguishing material may be formed of zeolite.

[0023] Effects of the Invention

[0024] According to the present disclosure, it is possible to provide a circuit breaker device that can quickly extinguish an arc generated during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a longitudinal sectional view showing a state before operation of the circuit breaker device according to the embodiment.

[0026] Figure 2 It is a longitudinal sectional view for explaining the internal space of the circuit breaker device according to the embodiment.

[0027] Figure 3 It is a longitudinal sectional view showing a state after the circuit breaker device according to the embodiment is operated.

[0028] Figure 4 It is a longitudinal sectional view of the circuit breaking device according to the modification 1 of the embodiment.

[0029] Figure 5 It is a longitudinal sectional view of a circuit breaker device according to a second modification of the embodiment.

[0030] Figure 6 It is a longitudinal sectional view of a circuit breaking device according to a third modification of the embodiment. DETAILED DESCRIPTION

[0031] <Implementation Method>

[0032] [Device configuration]

[0033] Figure 1 It is a longitudinal sectional view showing a state before operation of a circuit breaker device (hereinafter, simply referred to as a “breaker device”) 1 according to the embodiment. Figure 1 The state of the circuit breaker 1 before operation is shown. The circuit breaker 1 is a device for preventing a large loss by cutting off the circuit when a circuit included in an automobile, a home appliance, or a system including a battery (for example, a lithium-ion battery) is abnormal. In this specification, the circuit breaker 1 is described as follows. Figure 1 The section in the height direction (i.e., the vertical direction and the direction in which the first storage space 13 described later extends) shown in FIG. 1 is referred to as the longitudinal section of the circuit breaker 1, and the section orthogonal to the longitudinal section is referred to as the transverse section of the circuit breaker 1. In addition, the direction in which the emitter 40 described later is emitted along the first storage space 13 is referred to as the emission direction. Figure 1 However, in this specification, the up and down directions of the circuit breaker 1 are only used to indicate the relative positional relationship of the elements of the circuit breaker 1 for the convenience of explaining the embodiment.

[0034] The circuit breaker 1 includes a housing 10, an igniter 20, a current supply unit 30, an emitter 40, an arc extinguishing material 50, etc. The housing 10 has a first accommodation space 13 extending from an upper first end 11 to a lower second end 12 in a vertical direction. Figure 2 1 is a longitudinal sectional view for explaining the internal space of the circuit breaker device 1 according to the first embodiment. Figure 2 In the figure, the emitter 40 and the arc extinguishing material 50 are omitted. Figure 2 As shown, the first storage space 13 is a cylindrical space formed in a linear shape so that the projectile 40 can move, and extends along the vertical direction of the circuit breaker device 1. The housing 10 also has a second storage space 14 on the lateral outer side of the first storage space 13. The second storage space 14 is an annular space surrounding the first storage space 13, and is formed as an example of the "prescribed area" of the present disclosure. Figure 1 As shown, the arc extinguishing material 50 is contained in the second containing space 14. Figure 1In the scheme shown, the projectile 40 is contained in the first storage space 13 formed inside the housing 10, and the arc extinguishing material 50 is contained in the second storage space 14 which is demarcated as a specified area. In addition, a first connecting portion 16 is formed between the first storage space 13 and the second storage space 14 to connect them. The details will be described later. In the initial state before the operation of the circuit breaker 1 (igniter 20), the projectile 40 positioned at the first position 131 of the first storage space 13 blocks the first connecting portion 16. After the circuit breaker 1 (igniter 20) is operated, the projectile 40 is launched in the launch direction to open the first connecting portion 16, and the arc extinguishing material 50 is discharged from the second storage space 14 to the first storage space 13 by the impact generated by the launch.

[0035] [case]

[0036] The housing 10 includes a housing plate 100, a first housing 110, a second housing 120, a third housing 130 and a base plate 140. The first housing 110, the second housing 120, the third housing 130 and the base plate 140 are vertically coupled to the housing plate 100 by bolts 150, thereby forming an integrated housing 10.

[0037] The housing 10 has, for example, a substantially prismatic outer shape. However, the shape of the housing 10 is not particularly limited. In addition, a cylindrical cavity is formed in the first housing 110, the second housing 120, and the third housing 130 included in the housing 10 along the up-down direction. In the upper part of the housing 10, an igniter accommodating portion 200 is formed by the housing plate 100 and the first housing 110, and an igniter 20 described later is arranged in the igniter accommodating portion 200. In addition, the first housing 110 is configured to be able to be configured with the first power-carrying portion 31, and the third housing 130 is configured to be able to be configured with the second power-carrying portion 32. A pair of first retaining holes 300A and second retaining holes 300B are formed in the housing 10 of the embodiment. The first retaining holes 300A and the second retaining holes 300B are formed inside the housing 10, and the first housing 110, the second housing 120, and the third housing 130 extending in the up-down direction and configured as described above can be formed, for example, by an insulating member such as a synthetic resin. For example, it can also be formed by nylon, which is a kind of polyamide synthetic resin.

[0038] Internal threads are provided at the four corners of the housing plate 100, and holes are also provided in the first housing 110, the second housing 120, and the third housing 130 so that bolts 150 can be inserted from the substrate 140 side. The first housing 110, the second housing 120, and the third housing 130 are sandwiched between the housing plate 100 and the substrate 140, and the bolts 150 are fastened to the internal threads provided on the housing plate 100, thereby combining the housing plate 100, the first housing 110, the second housing 120, the third housing 130, and the substrate 140. The housing plate 100 constructed as described above can be formed of a suitable metal member such as stainless steel, aluminum, etc. with excellent strength and durability. However, the material forming the housing plate 100 is not particularly limited. In addition, the above scheme is an example of the shape of the housing plate 100, and other shapes can also be adopted.

[0039] The substrate 140 is also formed of a metal material. The substrate 140 can be formed of a suitable metal member such as stainless steel, aluminum, etc., which has excellent strength and durability. However, the material forming the substrate 140 is not particularly limited. In addition, regarding the shape of the substrate 140, the above scheme is also an example, and other shapes can also be adopted.

[0040] [Ignition]

[0041] Next, the igniter 20 is described. The igniter 20 is an electric igniter including an igniter body 21 having a pair of conductive pins 211 and an ignition portion 22 including a primer. The igniter body 21 is surrounded by, for example, an insulating resin. In addition, the top ends of the pair of conductive pins 211 in the igniter body 21 are exposed to the outside and are connected to a power source when the circuit breaker 1 is used.

[0042] The igniter 20 includes an igniter body 21 and an ignition portion 22, and the igniter body 21 is accommodated in the interior of the igniter accommodation portion 200 formed by the first housing 110 and the housing plate 100. The igniter 20 is fixed in a manner of being clamped between the housing plate 100 and the first housing 110 when the housing plate 100 and the first housing 110 are assembled. In addition, an O-ring installation groove may be formed in an annular shape along the circumference of the igniter body 21 on the igniter installation surface 111 of the first housing 110, and an O-ring may be embedded in the groove. For example, the O-ring may be formed of rubber (such as silicone rubber) or synthetic resin, and the O-ring may function in a manner of improving the airtightness between the inner circumferential surface of the igniter accommodation portion 200 and the igniter body 21.

[0043] like Figure 1As shown, the ignition part 22 of the igniter 20 is set to face the first storage space 13 of the housing 10, and is arranged at the upper end (first end 11) of the first storage space 13. The ignition part 22 is, for example, configured to accommodate explosives in an igniter cup. For example, the explosives are contained in the igniter cup of the ignition part 22 in a state of contact with a bridge wire (resistor) connected and erected in a manner that connects the base ends of a pair of conductive pins 211 to each other. As the explosives, for example, ZPP (zirconium-potassium perchlorate), ZWPP (zirconium-tungsten-potassium perchlorate), THPP (titanium hydride-potassium perchlorate), lead trinitroresorcinate, etc. can be used.

[0044] When the igniter 20 is operated, when the working current for igniting the primer is supplied from the power supply to the conductive pin 211, the bridge wire in the ignition part 22 is heated, and as a result, the primer in the igniter cup is ignited and burns, generating combustion gas. Then, as the primer in the igniter cup of the igniter 22 burns, the pressure in the igniter cup rises, the cleavage surface 22A of the ignition part 22 is cleaved, and the combustion gas is discharged from the igniter cup to the first storage space 13. More specifically, the combustion gas from the igniter cup is discharged toward the recessed portion 411 in the piston 41 included in the projectile 40 disposed at the first position 131 in the first storage space 13.

[0045] [Electrification Department]

[0046] Next, the conducting part 30 is described. The conducting part 30 is a conductive metal body that forms a part of a predetermined circuit when the circuit breaker 1 is mounted in the circuit. The conducting part 30 includes a pair of first conducting parts 31 and second conducting parts 32 that are separated from each other in the vertical direction (i.e., the radiation direction).

[0047] like Figure 1 As shown, the first power-carrying part 31 has a first bus bar 311 and a first socket 312. In addition, the second power-carrying part 32 has a second bus bar 321 and a second socket 322. The first socket 312 and the second socket 322 are formed into a cylindrical shape extending in the up-down direction, and the first socket 312 is arranged in the first holding hole 300A, and the second socket 322 is arranged in the second holding hole 300B. The first bus bar 311 and the second bus bar 321 are formed into a sheet shape, and the first bus bar 311 extends from the first socket 312 in the lateral direction and protrudes to the outside of the housing 10, and the second bus bar 321 extends from the second socket 322 in the lateral direction and protrudes to the outside of the housing 10. In the above circuit, the portion of the first bus bar 311 and the second bus bar 321 that protrudes to the outside of the housing 10 is connected to other conductors (such as leads).

[0048] The conducting part 30 may be formed of a metal such as copper (Cu), for example. However, the conducting part 30 may be formed of a metal other than copper, or may be formed of an alloy of copper and other metals. However, the conducting part 30 may take various forms, and its shape is not particularly limited.

[0049] [Accommodation space]

[0050] like Figure 2 As shown, the first accommodating space 13 is defined by the igniter 20, the first shell 110, the second shell 120, the third shell 130, the first socket 312 and the second socket 322. The upper end (first end 11) of the first accommodating space 13 is formed by the igniter 20, and the lower end (second end 12) of the first accommodating space 13 is formed by the third shell 130. The first accommodating space 13 includes the internal space of the first socket 312, the central part of the cavity of the second shell 120 and the internal space of the second socket 322, and the first accommodating space 13 is formed in a cylindrical shape.

[0051] The second storage space 14, which is a predetermined area for arranging the arc-extinguishing material 50 described later, is formed in an annular shape on the lateral outer side of the first storage space 13 in a manner surrounding the first storage space 13. The second storage space 14 is formed by the portion of the second housing 120 except the central portion of the cavity portion (i.e., the portion included in the first storage space 13). Figure 1 In the initial state before operation shown, the second accommodation space 14 is defined by the emitter 40 positioned at the first position 131 and the second housing 120. Figure 2 As shown, the first accommodation space 13 and the second accommodation space 14 are communicated via the first communication portion 16. The first communication portion 16 is configured as an annular gap formed between the first socket 312 and the second socket 322.

[0052] [Emissive]

[0053] Next, refer to Figure 1 The projectile 40 is described. The projectile 40 includes a piston 41 and a rod 42 as a conductive member provided in contact with the piston 41, and the projectile 40 is arranged in the first storage space 13. The piston 41 is formed of an insulating member such as synthetic resin. In addition, the rod 42 is formed of a conductive member such as copper. Figure 1As shown, inside the first accommodating space 13, the piston 41 is arranged on the side closer to the first end 11 than the rod 42 (the front side of the emission direction). It should be noted that, as far as the rod 42 is concerned, as long as the first socket 312 and the second socket 322 can be connected in the initial state before work, it is not necessary to form the entire rod 42 by a conductive member, and the scheme can be appropriately changed. For example, the rod 42 can also be formed by covering a non-conductive member with copper foil. In this way, the amount of conductive members used for the rod 42 can be suppressed to a minimum, and lightweight and low-cost can be achieved.

[0054] exist Figure 1 In the embodiment, the piston 41 and the rod 42 have a substantially cylindrical shape and have an outer diameter substantially corresponding to the inner diameter of the first accommodation space 13. In addition, a recessed portion 411 as a recessed portion having a cylindrical shape is formed on the upper surface of the piston 41 in the projectile 40, for example, and is configured to accommodate the ignition portion 22 in the recessed portion 411. The bottom surface of the recessed portion 411 forms the energy received from the igniter 20 when the igniter 20 is in operation as a pressure-receiving portion. In addition, a mounting protrusion 412 for mounting the rod 42 is provided on the lower end side of the piston 41. Moreover, a mounting concave portion 421 that fits with the mounting protrusion 412 of the piston 41 is provided on the upper end side of the rod 42. However, the piston 41 and the rod 42 may be bonded with an adhesive material or formed by integral molding.

[0055] exist Figure 1 In the initial state before operation shown, the projectile 40 constructed as described above is arranged at the first position 131 of the first accommodation space 13 in a state where the attachment concave portion 421 of the rod 42 is engaged and attached to the attachment convex portion 412 of the piston 41. Figure 1 In the example shown, the piston 41 of the projectile 40 is positioned on the igniter 20 side (upper end side) in the first accommodation space 13. Figure 1 In the example shown, the rod 42 of the emitter 40 is held in a state of being inserted into the first socket 312 included in the first power supply part 31 of the power supply part 30 and the second socket 322 included in the second power supply part 32. The rod 42 is embedded in the first socket 312 and the second socket 322 of the power supply part 32 with both ends held in the first socket 312 of the first power supply part 31 and the second socket 322 of the power supply part 32. Thus, in the initial state before operation, the circuit is electrically connected through the rod 42 and the first socket 312 and the second socket 322 included in the power supply part 30. However, the rod 42 included in the emitter 40 may be provided in at least one of the first socket 312 and the second socket 322 by any of the schemes shown as examples such as embedding, pressing, bonding, etc., or the rod 42 may be integrally connected to at least one of the first socket 312 and the second socket 322.

[0056] exist Figure 1In the initial state before operation of the circuit breaker device 1 shown, the emitter 40 is positioned at the first position 131, whereby the portion defining the first accommodation space 13 in the second housing 120 is blocked by the emitter 40, thereby defining the second accommodation space 14. Figure 3 In the illustrated state of the breaker device 1 (igniter 20) in operation, the emitter 40 moves in the first accommodation space 13 to a second position 132 that is moved from the first position 131 toward the second end 12 that is the lower end of the emission direction.

[0057] [Arc extinguishing materials]

[0058] Next, the arc extinguishing material 50 disposed in the second storage space 14 of the housing 10 is described. The arc extinguishing material 50 is a cooling material used to capture the arc generated when the electrical connection between the rod 42 and the first socket 312 and the second socket 322 is released, as well as the heat energy of the power supply portion 30 and the rod 42, thereby suppressing the arc generated when the current is cut off or extinguishing the generated arc. Figure 1 In the initial state before operation of the circuit breaker device 1 shown in FIG. 1 , the arc extinguishing material 50 is arranged in the second accommodation space 14. In contrast, in Figure 3 In the state where the circuit breaker 1 (igniter 20) is in operation, the projectile 40 moves to the second position 132, and the arc-extinguishing material 50 is accommodated in the area of ​​the first accommodation space 13 that is closer to the front side (the first end 11 side) than the projectile 40 in the emission direction of the projectile 40. However, the arc-extinguishing material 50 may also be filled in the area of ​​the first accommodation space 13 that is closer to the front side (the first end 11 side) than the projectile 40 in the emission direction of the projectile 40.

[0059] When the circuit breaker 1 (igniter 20) is working, the arc extinguishing material 50 is discharged from the second storage space 14 to the first storage space 13 via the first connecting portion 16. As one embodiment, the arc extinguishing material 50 is a powdered zeolite. The above embodiment of the arc extinguishing material 50 is an example and is not limited to these embodiments. For example, the arc extinguishing material 50 may also be formed of an inorganic oxide in a granular form. In addition, the arc extinguishing material 50 may not be a solid but a fluid substance represented by a liquid, a gel, etc.

[0060] [action]

[0061] Next, the operation of the circuit breaker device 1 according to the embodiment will be described. Figure 1 The state of the circuit breaker device 1 before operation of the embodiment is shown in FIG. Figure 3 The following shows the working state. Figure 1 and Figure 3 The operation contents of the circuit breaker device 1 when it is in operation will be described.

[0062] like Figure 1 As shown, before the circuit breaker 1 works, the emitter 40 is positioned at the first position 131. By arranging the emitter 40 at the first position 131, the first socket 312 of the first power supply portion 31 and the second socket 322 of the second power supply portion 32 are electrically connected via the rod 42, and the circuit is turned on. In addition, the first communication portion 16 is blocked by the emitter 40 arranged at the first position 131. Therefore, in the initial state before working, the arc extinguishing material 50 is retained in the second accommodation space 14.

[0063] When the circuit breaker 1 Figure 3 In operation in the illustrated state, the projectile 40 moves toward the second position 132 .

[0064] More specifically, through the action of the igniter 20, the recessed portion 411 of the piston 41 receives the energy generated by the gas emitted from the cracked surface 22A of the ignition portion 22 included in the igniter 20, and the projectile 40 is launched in the launching direction and moves from the first position 131 in the first storage space 13 to the second position 132. That is, when the igniter 20 is working, the piston 41 included in the projectile 40 is launched in the launching direction by the energy received from the igniter 20, so that the projectile 40 moves from the first position 131 to the second position 132, thereby interrupting the circuit connected to the power supply portion 30 and the rod 42 included in the projectile 40. At this time, the projectile 40 moves from the first position 131, thereby opening the first connecting portion 16 connecting the first storage space 13 and the second storage space 14. Furthermore, the impact generated by the emission of the emitter 40 acts on the arc-extinguishing material 50 arranged in the second storage space 14, thereby the arc-extinguishing material 50 arranged in the second storage space 14 is discharged into the first storage space 13 through the first connecting portion 16. The arc-extinguishing material 50 is discharged into the first storage space 13, thereby at least a part of the emitter 40 is covered with the arc-extinguishing material 50 by the discharged arc-extinguishing material 50, and the arc is quickly extinguished and the high-temperature gas generated from the igniter 20 is quickly cooled. In addition, the arc-extinguishing material 50 is stored in the area of ​​the first storage space 13 that is closer to the front side than the emitter 40 in the emission direction from the second storage space 14 through the first connecting portion 16, thereby suppressing the return of the emitter 40 from the second position 132 to the first position 131, and maintaining the insulation state.

[0065] [Function / Effect]

[0066] As described above, according to the circuit breaker 1 of this embodiment, even if an arc is generated when the circuit is broken when the device constituting the circuit is abnormal or the system equipped with the circuit is abnormal, a circuit breaker can be provided that can quickly extinguish the arc. In addition, the high-temperature gas generated by the igniter can be quickly cooled.

[0067] <Variation 1 of the embodiment>

[0068] [Device configuration]

[0069] Figure 4 FIG. 1 is a longitudinal sectional view of a circuit breaker device 1A according to a first modification of the embodiment. Figure 4 , the schematic structure of the circuit breaker 1A is shown when viewed from the side. Figure 4 A circuit breaker 1A according to a first variation of the embodiment will be described. Figure 1 to Figure 3 The following description will focus on the differences between the circuit breaker device 1 described above. In addition, among the components constituting the circuit breaker device 1A, the components common to the circuit breaker device 1 are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

[0070] like Figure 4 As shown, the circuit breaker 1A of the modification 1 is provided with a second connecting portion 17 for moving air and arc extinguishing material 50 in the second housing 120 and the third housing 130 on the basis of the structure of the circuit breaker 1. The second connecting portion 17 connects the second storage space 14 with the region (region on the second end 12 side) closer to the top of the emitter 40 in the first storage space 13 in the emission direction. As a result, as described later, when the circuit breaker 1A is in operation, it can be expected that the operating speed of the emitter 40 is improved, and the arc extinguishing material 50 is facilitated to diffuse and discharge.

[0071] [action]

[0072] In the circuit breaker 1A configured as described above, when the igniter 20 is operated, the projectile 40 is launched in the launch direction by the energy from the igniter 20. At this time, the air existing in the region (region on the second end 12 side) closer to the top of the projectile 40 in the first storage space 13 in the launch direction is pressed toward the second connecting portion 17 by the projectile 40, and the air is sent to the second storage space 14. Through this operation, the second connecting portion 17 functions as an air discharge hole that becomes a resistance to the operation of the projectile 40, and the arc extinguishing material 50 is more likely to pass through the first connecting portion 16, thereby the discharge of the arc extinguishing material 50 to the first storage space 13 becomes more active, thereby providing further reliability of the operation, or speeding up the operation of the circuit breaker 1A. It should be noted that the opening on the first storage space 13 side and the opening on the second storage space 14 side of the second connecting portion 17 may be blocked by a rupture plate, for example, formed of a metal foil, which is ruptured by the operation of the igniter 20.

[0073] By providing the rupture plate, it is possible to prevent the arc extinguishing material 50 from accidentally flowing into the second connecting portion 17 before the igniter 20 operates. Figure 3The illustrated embodiment is an example, and the embodiment of the second communication portion 17 in the circuit breaker device 1A is not limited thereto.

[0074] <Variation 2 of the embodiment>

[0075] [Device configuration]

[0076] Figure 5 FIG. 2 is a longitudinal sectional view of a circuit breaker 1B according to a second modification of the embodiment. Figure 5 FIG. 2 shows a schematic structure of the circuit breaker 1B when viewed from the side. Figure 5 A circuit breaker 1B according to a second variation of the embodiment will be described. It should be noted that in the description of this variation, Figure 1 to Figure 3 The following description will be mainly focused on the differences between the circuit breaker device 1 described in . In addition, among the components constituting the circuit breaker device 1B, the components common to the circuit breaker device 1 are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

[0077] In the circuit breaker device 1B of Modification 2, the emitter 40 includes only the rod 42. The recessed portion 421A of the rod 42 receives energy generated by the gas discharged from the cleavage surface 22A of the ignition portion 22 included in the igniter 20.

[0078] [action]

[0079] In the circuit breaker device 1B constructed as described above, the emitter 40 is composed only of the rod 42 as a conductive component. When the igniter 20 is working, the igniter side of the rod 42, i.e., the recessed portion 421A, receives the energy generated by the igniter 20, thereby releasing the connection between the power supply portion 30 and the rod 42 and cutting off the circuit.

[0080] <Variation 3 of the embodiment>

[0081] [Device configuration]

[0082] Figure 6 FIG. 1 is a longitudinal sectional view of a circuit breaker device 1C according to a third variation of the embodiment. Figure 6 FIG. 2 shows a schematic structure of the circuit breaker 1C when viewed from the side. Figure 6 A circuit breaker 1C according to a third variation of the embodiment will be described. Figure 1 to Figure 3 The following description will be mainly focused on the differences between the circuit breaker device 1 described above. In addition, among the components constituting the circuit breaker device 1C, the components common to the circuit breaker device 1 are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

[0083] In the circuit breaker device 1C of the modification 3, the third storage space 15, which is the "predetermined area" of the present disclosure, is formed in the piston 41 included in the projectile 40. Figure 6 In the embodiment, arc extinguishing material 50 is arranged in the third accommodation space 15 included in the piston 41. However, the third accommodation space 15 may be arranged in a part of the piston 41, or may be entirely composed of the piston 41. More specifically, for example, a solution in which the third accommodation space 15 is included in a part such as the periphery or the interior of the piston 41, or a solution in which the piston 41 is composed of the arc extinguishing material 50 is cited. It should be noted that Figure 6 The illustrated embodiment is an example, and the embodiments of the third accommodation space 15 and the arc extinguishing material 50 in the circuit breaker device 1C are not limited thereto.

[0084] [action]

[0085] The circuit breaker 1C constructed as described above receives energy generated when the igniter 20 is operated through the recessed portion 411 of the piston 41. At this time, the rod 42 is pressed down to cut off the circuit, and the arc extinguishing material 50 is discharged from the second accommodation space 14 formed in the piston 41 by the impact when the circuit breaker 1C is operated, so that the arc generated by the rod 42 and the current-carrying portion 30 is extinguished and the gas generated from the igniter 20 is cooled.

[0086] As mentioned above, although the embodiment of this disclosure is described, each scheme disclosed in this specification can also be combined with other arbitrary features disclosed in this specification.

[0087] Description of Reference Numerals

[0088] 1: Circuit breaker;

[0089] 10: Shell;

[0090] 20: Ignition device;

[0091] 30: Power supply unit;

[0092] 40: Emitter;

[0093] 50: Arc extinguishing material.

Claims

1. A circuit breaker device comprising: case; An igniter, disposed on the housing; A first accommodation space is formed in the housing and extends in one direction; an emitter, which is positioned at a first position of the first accommodation space before the igniter is operated, and is emitted toward a specified emission direction along the first accommodation space by energy received from the igniter when the igniter is operated, wherein the emitter includes a conductive member having conductivity; a pair of current-carrying parts provided on the housing and forming a part of the circuit, the pair of current-carrying parts being configured to be electrically connected via the conductive member of the emitter located at the first position before the igniter is operated, and to be electrically disconnected when the igniter is operated and the emitter is launched; as well as Arc extinguishing material is arranged in a specified area before the igniter works. The circuit breaking device is configured to discharge the arc extinguishing material from the predetermined area by the impact generated by the emission of the emitter when the igniter is operated, and to cover at least a portion of the emitter with the discharged arc extinguishing material.

2. The circuit breaker device according to claim 1, comprising: a second storage space formed as the prescribed area outside the first storage space and provided in the housing; and a first connecting portion, connecting the first accommodation space with the second accommodation space; Before the igniter works, the first connecting portion is blocked by the emitter located at the first position, and the emitter is emitted by the work of the igniter, thereby opening the first connecting portion and discharging the arc extinguishing material from the second storage space to the first storage space.

3. The circuit breaker device according to claim 2, further comprising: The second communication portion connects a region of the first storage space that is located on the front side of the emitter in the emission direction with the second storage space.

4. The circuit breaker device according to claim 1 or 2, wherein: When the emitter is emitted by the operation of the igniter, the arc extinguishing material is accommodated in a region of the first accommodation space that is closer to the front side than the emitter in the emission direction.

5. The circuit breaker device according to claim 1 or 2, wherein: The pair of current-carrying portions are arranged to be separated from each other in the emission direction, The first conducting portion of the pair of conducting portions on the front side in the emission direction has a first cylindrical socket extending along the emission direction. The second current-carrying portion of the pair of current-carrying portions on the front side in the emission direction has a second cylindrical socket extending along the emission direction. The first accommodating space is defined by the first socket and the second socket, Before the igniter is operated, the emitter is embedded in the first socket and the second socket in such a manner that the first socket and the second socket are electrically connected via the conductive member.

6. The circuit breaker device according to claim 5, wherein: Before the igniter is operated, the conductive member is pressed into at least one of the first socket and the second socket.

7. The circuit breaker device according to claim 5, wherein: Before the igniter is operated, the conductive member is bonded to at least one of the first socket and the second socket.

8. The circuit breaker device according to claim 5, wherein: Before the igniter is operated, at least one of the first socket and the second socket is integrally connected to the conductive member.

9. The circuit breaker device according to claim 1 or 2, wherein: The projectile includes a piston disposed on the front side of the conductive member in the projecting direction, and the piston is projected toward the projecting direction by energy received from the igniter when the igniter is operated.

10. The circuit interrupter device according to claim 9, wherein: The prescribed area is included in the piston.

11. The circuit breaker device according to claim 1 or 2, wherein: The arc-extinguishing material is formed of an inorganic oxide.

12. The circuit breaker device according to claim 1 or 2, wherein: The arc extinguishing material is formed of zeolite.

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