Circuit breaker device

Abstract

The invention provides a circuit breaker device capable of suppressing an increase in power of a power supply and easily cutting off a circuit even if the resistance of a cutting-off part is reduced. A circuit breaker device 600 includes a breaking portion 400 constituting a part of a circuit, in which the breaking portion 400 includes base members 430 on both sides and a separating member 420 connected between the base members 430, and includes a pressing connection portion 431 that connects contact surfaces of the base members 430 and the separating member 420 while being pressed, the pressing connection portion 431 being configured to press the contact surfaces of the base members 430 and the separating member 420, and the pressing connection portion 431 being configured to press the contact surfaces of the base members 430 and the separating member 420. The separating member 420 moves by the power mechanism and is separated from the base member 430 while being in contact with the base member 430 along the contact surface, and thus the connection between the base members 430 is disconnected.

Description

Technical Field

[0001] The present invention relates to a circuit breaker device mainly used for an electric circuit of an automobile or the like. Background Art

[0002] Generally, a circuit breaker device is used to protect a circuit and various electrical components connected to the circuit mounted on an automobile, etc. Specifically, when an abnormality occurs in the circuit, the circuit breaker device disconnects a part of the circuit to physically disconnect the circuit.

[0003] There are various types of such circuit breaker devices. For example, the circuit breaker device of Patent Document 1 is a circuit breaker device including a housing, a cut-off portion provided in the housing and constituting a part of a circuit, a power source provided on a first end side of the housing, and a moving body moving between the first end and a second end opposite to the first end in the housing. When the moving body moves from the first end to the second end by the power source, a part of the moving body cuts off the cut-off portion to disconnect the circuit.

[0004] Since the voltage and current applied to the circuit tend to increase due to the performance improvement of automobiles, etc. in recent years, the heat generated by the current flowing through the cut-off portion constituting a part of the circuit, that is, the power consumption, also increases. Therefore, the cut-off cross-sectional area is increased by increasing the thickness of the cut-off portion and reducing the resistance of the cut-off portion, thereby suppressing the power loss. However, when the cut-off cross-sectional area increases, the power for cutting the cut-off portion needs to be increased, and as a result, the strength of the housing needs to be further improved to withstand the increased power (explosive force of gunpowder, etc.). There is a problem that the housing becomes larger, and the size and price of the circuit breaker device increase accordingly.

[0005] Citation List

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application 2021-100645 Summary of the invention

[0008] Technical issues

[0009] Therefore, in view of the above-mentioned problems, the present invention provides a circuit breaker device capable of suppressing an increase in power supply power and easily breaking a circuit even when the resistance of a cutoff portion is reduced.

[0010] Solutions to the problem

[0011] The circuit breaker device of the present invention is a circuit breaker device comprising: a disconnecting portion constituting a part of a circuit, wherein the disconnecting portion comprises base members on both sides and a separating member connected between the base members, and

[0012] The circuit breaker device includes a press-connection portion that connects contact surfaces of a base member and a separation member while pressing, and is configured so that the separation member moves through a power mechanism while in contact with the base member along the contact surface and is separated from the base member, thereby disconnecting the connection between the base members.

[0013] According to the above-mentioned features, the base member and the separation member as the separation body are maintained in an electrically connected state by pressing the connection portion. In addition, when the circuit is disconnected, unlike the known case where the disconnection portion formed integrally is physically cut off with a large force, the connection state between the base member and the separation member as the initial separation body can be separated. Therefore, even when the resistance of the disconnection portion is reduced, the circuit can be easily disconnected with less power than before, and the size and manufacturing cost of the circuit breaker device can be suppressed.

[0014] Along the contact surface of the base member and the separator, the separator moves while in contact with the base member. Therefore, by reducing the surface roughness of the contact surface of the base member and the separator and appropriately adjusting the maximum friction force of the contact surface of the base member and the separator to be smaller, the force required to separate the separator from the base member can be reduced. As a result, the circuit can be easily disconnected with less power, and the size and manufacturing cost of the circuit breaker device can be suppressed.

[0015] In the circuit breaker device of the present invention, the arc extinguishing portion is provided near the separating member, and after the separating member moves to disconnect the connection between the base members, the arc extinguishing portion is connected between the base members.

[0016] According to the above-mentioned features, even when a high-voltage arc is generated between the base members on both sides, the arc extinguishing portion connected between the base members can effectively extinguish the arc.

[0017] In the circuit breaker device of the present invention, the arc extinguishing portion is formed integrally with the separator.

[0018] According to the above feature, after the separation member is separated from the base member, the arc extinguishing portion is smoothly switched as it is, and is reliably connected between the base members.

[0019] In the circuit breaker device of the present invention, the arc extinguishing material having a fluid shape or a particle shape is provided in the moving direction of the separator, and when the separator moves, the separator enters the arc extinguishing material up to the connection terminal portion of the separator.

[0020] According to the above feature, the arc generated around the connection terminal portion is effectively extinguished by the arc extinguishing material just before the separation member is separated from the base member.

[0021] The circuit breaker device of the present invention includes an arc extinguishing material provided at a position where the arc extinguishing material contacts a connection terminal portion of a separating member when the separating member moves.

[0022] According to the above feature, the arc generated around the connection terminal portion is effectively extinguished by the arc extinguishing material just before the separation member is separated from the base member.

[0023] The circuit breaker device of the present invention includes a moving body that moves between a first end where the power mechanism is provided and a second end opposite to the first end, wherein the moving body is configured to move by the power of the power mechanism to separate the separation piece from the base piece, and the moving body is formed integrally with the separation piece.

[0024] According to the above features, since the separating piece is a separate body from the base member, even if the moving body and the separating piece are formed integrally, the moving body and the entire disconnecting portion are not formed integrally, so it is impossible to increase the size of the circuit breaker device. In addition, since the assembly man-hours are reduced, the assembly time can be shortened.

[0025] The circuit breaker device of the present invention comprises: a fuse including a fuse portion and an arc extinguishing material; and an insulator adjacent to the separator, wherein the insulator is provided with a pair of electrodes connected to the fuse, and when the separator moves to disconnect the connection between the base members, the electrodes of the insulator are connected between the base members.

[0026] According to the above features, when the separation member is completely separated from the base member and the circuit is disconnected, the overcurrent is smoothly and reliably induced to the fuse, so that an arc caused by a fault current can be prevented from being generated between the base members on both sides.

[0027] Advantageous Effects of the Invention

[0028] As described above, according to the circuit breaker device of the present invention, even when the resistance of the cutoff portion is reduced, it is possible to suppress an increase in power supply power and to easily cut off a circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 (a) is an overall perspective view of a lower case constituting a case of a circuit breaker device according to a first embodiment of the present invention, and Figure 1 (b) is a top view of the lower shell.

[0030] Figure 2 (a) is an overall perspective view of an upper case constituting a case of a circuit breaker device according to a first embodiment of the present invention, and Figure 2 (b) is a bottom view of the upper shell.

[0031] Figure 3 (a) is a perspective view of a moving body of a circuit breaker device according to a first embodiment of the present invention, and Figure 3 (b) is a bottom view of the moving object.

[0032] Figure 4 (a) is a perspective view of a disconnecting portion of a circuit breaker device according to a first embodiment of the present invention, and Figure 4 (b) is a side view of the broken portion, and Figure 4 (c) is a top view of the broken portion.

[0033] Figure 5 is an exploded perspective view of a circuit breaker device according to a first embodiment of the present invention.

[0034] Figure 6 It is being assembled Figure 5 The circuit breaker device is shown in a cross-sectional view taken along line AA in the state shown.

[0035] Figure 7 It shows the moving body from Figure 6 A cross-sectional view of the state movement is shown.

[0036] Figure 8 (a) is a perspective view of a disconnecting portion and a moving body of a circuit breaker device according to a second embodiment, and Figure 8 (b) is a front view of the disconnecting portion and the moving body.

[0037] Fig. 9 Shows something like Figure 6 A cross-sectional view of a circuit breaker device according to a second embodiment.

[0038] Fig.10 It shows the moving body from Fig. 9 A cross-sectional view of the state movement is shown.

[0039] Fig.11 Shows something like Figure 6 4. A cross-sectional view of a circuit breaker device according to a third embodiment.

[0040] Fig.12 It shows the moving body from Fig.11 A cross-sectional view of the state movement is shown.

[0041] Fig.13 Shows something like Figure 6 4. A cross-sectional view of a circuit breaker device according to a fourth embodiment.

[0042] Fig.14 It shows the moving body from Fig.13 A cross-sectional view of the state movement is shown.

[0043] Fig.15 is a perspective view of a disconnecting portion and a moving body of a circuit breaker device according to a fifth embodiment.

[0044] Fig.16is a perspective view of a disconnecting portion of a circuit breaker device according to a sixth embodiment.

[0045] Fig.17 (a) is a perspective view of a disconnecting portion of a circuit breaker device according to a seventh embodiment, and (b) is a perspective view of a disconnecting portion of a circuit breaker device according to an eighth embodiment.

[0046] Fig.18 (a) is a perspective view of a disconnecting portion of a circuit breaker device according to a ninth embodiment, and (b) is a perspective view of a disconnecting portion and a moving body of the circuit breaker device according to the ninth embodiment.

[0047] Fig.19 is a perspective view of a disconnecting portion of a circuit breaker device and a solenoid type trip device according to a tenth embodiment.

[0048] Fig. 20 is an exploded perspective view of a circuit breaker device according to a tenth embodiment.

[0049] Fig.21 It is being assembled Fig. 20 A cross-sectional view taken along line BB of the circuit breaker device in the state shown.

[0050] Fig. 22 Is to separate the parts from Fig.21 A cross-sectional diagram of a state of separation.

[0051] Fig.23 is an exploded perspective view of a circuit breaker device according to an eleventh embodiment.

[0052] Reference Symbols List

[0053] 300 Shell

[0054] 400 disconnection unit

[0055] 420 Separation Parts

[0056] 430 base parts

[0057] 600 Circuit Breaker Device DETAILED DESCRIPTION

[0058] Various embodiments of the present invention will be described with reference to the accompanying drawings. Note that the shape, material, etc. of each component of the circuit breaker device in the embodiments described below are merely examples and are not limited thereto.

[0059] <First Embodiment>

[0060] first, Figure 1 The lower housing 100 constituting the housing 300 of the circuit breaker device according to the first embodiment of the present invention is shown. Figure 1 (a) is an overall perspective view of the lower housing 100, and Figure 1 (b) is a top view of the lower housing 100 .

[0061] like Figure 1 As shown, the lower housing 100 is a generally quadrangular prism made of an insulator such as synthetic resin, and includes a hollow lower receiving portion 110 inside. The lower receiving portion 110 extends from the upper surface 120 toward the lower surface 130 of the lower housing 100 and is configured to be able to receive the moving body 500 described later.

[0062] In addition, a portion of the upper surface 120 includes an insertion portion 113 that is recessed according to the shape of the base member 430 so that the base member 430 of the disconnecting portion 400 described later can be inserted. The insertion portion 113 is arranged to face both sides of the lower receiving portion 110, and the insertion portion 113 supports the disconnecting portion 400 extending linearly on both sides.

[0063] Next, Figure 2 An upper case 200 constituting a case 300 of a circuit breaker device according to a first embodiment of the present invention is shown. Figure 2 (a) is an overall perspective view of the upper housing 200, and Figure 2 (b) is a bottom view of the upper housing 200 .

[0064] like Figure 2 As shown, the upper housing 200 is a substantially quadrilateral prism body made of an insulator such as synthetic resin, and is formed with Figure 1 The upper housing 200 is shown as a pair of housings 300 with the lower housing 100. The upper housing 200 includes a hollow upper housing portion 210 in the interior, and the upper housing portion 210 extends from the lower surface 230 toward the upper surface 220 of the upper housing 200, and is configured to be able to accommodate the moving body 500 described later. The inner surface 211 of the upper housing portion 210 is a smooth surface so that the moving body 500 can slide inside in the up and down directions. As described below, the upper housing portion 210 is arranged up and down with the lower housing portion 110 of the lower housing 100 to form a linearly extended housing portion 310, and the moving body 500 can move up and down in the housing portion 310.

[0065] In addition, a power storage section 221 in which the power source P is accommodated is formed in a portion of the upper surface 220 side of the upper housing 200. The power storage section 221 is communicated with the upper end side of the upper accommodation section 210. As described in detail later, the power such as air pressure generated from the power source P accommodated in the power storage section 221 is transmitted to the moving body 500 in the upper accommodation section 210, and the moving body 500 is moved. Note that the lower housing 100 and the upper housing 200 are basically quadrilateral prism bodies made of synthetic resin, but are not limited thereto, and may have any shape made of another material as long as they have high insulation performance and strength enough to withstand use.

[0066] Next, Figure 3 A moving body 500 according to a first embodiment of the present invention is shown. Figure 3 (a) is a perspective view of the moving body 500, and Figure 3 (b) is a bottom view of the moving object 500 .

[0067] like Figure 3 As shown, the moving body 500 is made of an insulator such as a synthetic resin, and includes a main body 510 having a substantially columnar shape on the upper end side, a sliding portion 520 having a flat quadrilateral shape at the center, and a protruding portion 530 protruding downward on the lower end side. The upper end of the main body 510 is provided with a recess 511, which is a portion facing the power source P. The sliding portion 520 has a shape corresponding to the inner surface shape of the accommodating portion 310, and the sliding portion 520 slides on the inner surface of the accommodating portion 310, whereby the moving body 500 can slide smoothly while maintaining a posture along the inner side of the accommodating portion 310. Note that the moving body 500 is made of a synthetic resin, but is not limited thereto, and may have any shape made of other materials as long as they have high insulation performance and strength sufficient to withstand use.

[0068] Next, Figure 4 The disconnecting portion 400 constituting a part of the circuit disconnected by the circuit breaker device 600 according to the first embodiment of the present invention is shown. Figure 4 (a) is a perspective view of the disconnection portion 400, Figure 4 (b) is a side view of the disconnection portion 400, and Figure 4 (c) is a top view of the breaking portion 400 .

[0069] The disconnecting part 400 is a conductor made entirely of a metal such as copper so as to be electrically connected to a circuit, and includes a base member 430 for being electrically connected to the circuit at both ends, and a separator 420 which is a separated body from the base member 430 and is located between the base members 430. A connection hole 410 for connecting to the circuit is formed at the end of the base member 430. The base member 430 includes a press-connection part 431 having a pair of retainers. The press-connection part 431 is also made entirely of a conductor made of a metal such as copper so as to be electrically connected to the circuit. The press-connection part 431 retains the separator 420 from both sides of the separator 420.

[0070] More specifically, the end of the pressing connection part 431 is a flat surface 432, and the flat surface 432 is in contact with the side surface 421 of the separator 420 having a plate shape. In particular, since the side surface 421 of the separator 420 is also a flat surface, the flat surface 432 of the pressing connection part 431 and the side surface 421 of the separator 420 are in close contact with each other and in surface contact with each other. The contact surfaces of the base member 430 and the separator 420, that is, the flat surface 432 of the pressing connection part 431 and the side surface 421 of the separator 420 are pressed by the pressing force F, and the pressing connection part 431 holds the separator 420 by the pressing force F. Therefore, the base member 430 and the separator 420 as a separated body are assembled to be electrically and physically connected to each other.

[0071] In particular, since the pressing force F is applied to the contact surfaces of the base member 430 and the separator 420, the contact resistance of the contact surfaces of the base member 430 and the separator 420 (the contact surface of the flat surface 432 of the pressing connection portion 431 and the side surface 421 of the separator 420) can be suppressed to be low, and further, this state can be maintained for a long time. Note that suppressing the contact resistance between the contact surfaces of the base member 430 and the separator 420 to be low means suppressing the resistance between the contact surfaces on both sides in contact with each other to be low, because the contact surfaces of the base member 430 and the separator 420 (the contact surface of the flat surface 432 of the pressing connection portion 431 and the side surface 421 of the separator 420) are more firmly adhered to each other by the pressing force F, and therefore the current easily flows accordingly.

[0072] The contact surface of the base member 430 (at Figure 4 , the flat surface 432) or the contact surface of the separator 420 (in Figure 4The electroplating layer is formed by performing electroplating on the contact surface of the base member 430 and the contact surface of the separator 420. The electroplating layer can fill the gap due to the slight unevenness on the contact surface of the base member 430 and the contact surface of the separator 420, and suppress oxidation due to the surrounding environment, so that low contact resistance can be maintained for a long time. In addition, the electroplating layer includes tin (Sn), and its hardness is lower than the hardness of the metal such as copper (Cu) constituting the disconnection portion 400 (that is, the separator 420 and the base member 430). Therefore, when the pressing force F is applied, the electroplating layer with low hardness is strongly squeezed and crushed by the contact surface of the base member 430 and the contact surface of the separator 420 with high hardness, so that the gap caused by the slight unevenness of the contact surface of the base member 430 and the contact surface of the separator 420 can be more reliably filled, and the contact resistance can be suppressed to be low. The plating layer may be made of gold (Au), silver (Ag), etc., and may have lower hardness than metal constituting the disconnection portion 400 such as copper (Cu), and may have higher or equal electrical conductivity than metal such as copper (Cu).

[0073] The disconnecting portion 400 has a long plate shape as a whole similar to the disconnecting portion of a known circuit breaker device, and includes Figure 4 (b) shows the short side 401 and the long side 402. The short direction of the break portion 400 is along the PP axis, which is perpendicular to the long axis QQ extending along the long side 402 of the break portion 400. Note that the separator 420 is not limited to Figure 4 The shape shown in the figure may have any shape as long as the base members 430 on both sides can be electrically and physically connected. The pressing connection part 431 that connects the base member 430 and the separating member 420 while pressing the contact surfaces of the base member 430 and the separating member 420 has the characteristics of a pair of retaining members, but is not limited thereto, and may have any configuration as long as it can connect the base member 430 and the separating member 420 while pressing the contact surfaces of the base member 430 and the separating member 420.

[0074] Next, we will refer to Figure 5 and Figure 6 The assembly method of the circuit breaker device 600 of the present invention is described. Note that Figure 5 is an exploded perspective view of a circuit breaker device 600, Figure 6 It is assembling Figure 5 The circuit breaker device 600 is shown in a cross-sectional view taken along line AA in the state shown.

[0075] When the circuit breaker device 600 is assembled, first, the base 430 of the disconnecting part 400 is inserted into the inserting part 113 of the lower case 100 , and the disconnecting part 400 is arranged so that the separating piece 420 crosses the lower receiving part 110 of the lower case 100 .

[0076] Next, the upper housing 200 is assembled from above the lower housing 100 so that the main body 510 side of the moving body 500 is inserted into the upper receiving portion 210 of the upper housing 200. In this way, the housing 300 including the lower housing 100 and the upper housing 200 is assembled with the disconnecting portion 400 and the moving body 500 received inside.

[0077] In addition, the power storage section 221 of the upper housing 200 is attached with a power source P as a power mechanism for moving the separation member 420, and a part of the power source P is accommodated in the recess 511 of the moving body 500. When an abnormality signal is input from the outside when an abnormality of the circuit is detected, the power source P, for example, causes gunpowder in the power source P to explode, and the moving body 500 in the accommodating section 310 is instantly pushed out and moved by the air pressure generated due to the explosion. Note that the power source P is not limited to a power source using gunpowder, and other known power sources may be used as long as it generates electric power for moving the moving body 500.

[0078] like Figure 6 As shown, the moving body 500 is accommodated in the accommodating portion 310, which includes a lower accommodating portion 110 and an upper accommodating portion 210 arranged linearly. The accommodating portion 310 extends from the first end 320 of the housing 300 to the second end 330 on the opposite side of the first end 320. Since the moving body 500 is arranged on the first end 320 side where the power source P is provided, the second end 330 side of the accommodating portion 310 is hollow. Therefore, as described below, the moving body 500 can move on the second end 330 side while separating the separating piece 420. Since the recess 511 on the upper end side of the moving body 500 is adjacent to the power source P, the air pressure generated by the explosion of the gunpowder in the power source P is transmitted to the upper end side of the moving body 500, as described below.

[0079] Note that Figure 6 As shown, the assembled circuit breaker device 600 is used by being connected in a circuit to be protected. Specifically, the base member 430 of the disconnecting part 400 is connected to a part of the circuit, and the disconnecting part 400 constitutes a part of the circuit. Under normal circumstances, since the base member 430 and the separating member 420 of the disconnecting part 400 are not separated from each other and are physically and electrically connected to each other, current flows in the circuit via the base member 430 and the separating member 420 of the disconnecting part 400.

[0080] Next, we will refer to Figure 7 A circuit breaker device 600 is described that disconnects a circuit when an abnormality such as an overcurrent flowing through the circuit is detected. In addition, Figure 7 It indicates that the moving object 500 is Figure 6 A cross-sectional view of the state movement is shown.

[0081] First, if Figure 7 As shown, when an abnormality such as an overcurrent flowing through the circuit is detected, an abnormality signal is input to the power source P, and the gunpowder in the power source P explodes. Then, the air pressure generated by the explosion is transmitted to the recessed portion 511 on the upper end side of the moving body 500. By this air pressure, the moving body 500 is strongly blown away from the first end 320 toward the second end 330, and moves instantaneously in the accommodation portion 310 toward the second end 330.

[0082] Then, the protrusion 530 of the moving body 500 forcefully pushes out the separator 420 on the second end 330 side. The separator 420 is pushed out along the PP axis, that is, along the extension direction of the short side of 400 (that is, the short direction), and the separator 420 is separated from the base member 430, and the base members 430 on both sides enter an electrically disconnected state. Thus, the state in which the base members 430 on both sides of the disconnection portion 400 are energized via the separator 420 is disconnected, and overcurrent can be prevented from flowing through the circuit.

[0083] Note that the force with which the protrusion 530 of the moving body 500 strongly pushes the separating member 420 on the second end 330 side is greater than the pressing force F with which the base members 430 on both sides hold the separating member 420 therebetween, and thus the moving body 500 can separate the separating member 420 from the base member 430. Since the direction of the force with which the moving body 500 pushes the separating member 420 on the second end 330 side and the direction of the pressing force F with which the base members 430 on both sides hold the separating member 420 therebetween intersect with each other, the force of the moving body 500 is effectively transmitted to the separating member 420, and the moving body 500 can easily separate the separating member 420 from the base member 430. In particular, when the direction of the force with which the moving body 500 pushes the separating member 420 on the second end 330 side and the direction of the pressure F between the base members 430 on both sides that holds the separating member 420 are orthogonal to each other, the force of the moving body 500 is more effectively transmitted to the separating member 420, and the moving body 500 can more easily separate the separating member 420 from the base member 430.

[0084] The thickness (plate thickness) of the disconnecting portion 400 can be made similar to that of the disconnecting portion of the known technology, and the resistance of the disconnecting portion 400 is reduced to suppress power consumption. The circuit breaker device 600 of the present invention maintains the base member 430 and the separation member 420 as the separation body in a state of being electrically connected by pressing the connection portion 431. In addition, when the circuit is disconnected, unlike the known case of physically cutting off the disconnecting portion formed integrally with a large force, the connection state between the base member 430 and the separation member 420 as the initial separation body can be separated. Therefore, even when the resistance of the disconnecting portion 400 is reduced, the circuit can be easily disconnected with less power than before, and the size and manufacturing cost of the circuit breaker device can be suppressed.

[0085] Furthermore, when the separator 420 moves along the PP axis, that is, moves along the extending direction of the short side of 400 and separates from the base member 430, the separator 420 moves along the contact surface of the base member 430 and the separator 420 (the contact surface of the flat surface 432 of the pressing connection portion 431 and the side surface 421 of the separator 420) in contact with the base member 430. The force required to separate the separator 420 from the base member 430 needs to be greater than the maximum friction force on the contact surface of the base member 430 and the separator 420 (the contact surface of the flat surface 432 of the pressing connection portion 431 and the side surface 421 of the separator 420). Therefore, if the maximum friction force of the contact surfaces of the base member 430 and the separator 420 (the contact surface of the flat surface 432 of the pressing connection portion 431 and the side surface 421 of the separator 420) is appropriately adjusted to be smaller by reducing the surface roughness of the contact surfaces of the base member 430 and the separator 420, it is possible to reduce the force required to separate the separator 420 from the base member 430. As a result, the circuit can be easily disconnected with less power, and the size and manufacturing cost of the circuit breaker device can be suppressed.

[0086] The plate-shaped separator 420 moves in a state where the side surface 421 stands upright along the PP axis, that is, along the extending direction of the short side of the disconnecting portion 400. Therefore, since the end side portion 422 having a smaller surface area than the side surface 421 faces the traveling direction of the separator 420, the end side portion 422 becomes a head and moves toward the second end 330 in the accommodating portion 310. Therefore, in the traveling direction of the separator 420, the range of interference between the separator 420 and other parts (a part of the accommodating portion 310, arc extinguishing material, etc.) can be made as narrow as possible, and the internal structure of the housing 300 can be simplified. Note that in the circuit breaker device 600 of the present invention, each component element such as the disconnecting portion 400 is accommodated in the housing 300, but the present invention is not limited thereto. For example, the circuit breaker device 600 may be built in other devices or components together with each component element (such as the disconnecting portion 400 without the housing 300), and the circuit breaker device 600 may be configured in any aspect.

[0087] <Second Embodiment>

[0088] Next, we will refer to Figure 8 A circuit breaker device 600A of the present invention according to the second embodiment is described. Note that Figure 8 (a) is a perspective view of a disconnecting portion 400A and a moving body 500A of a circuit breaker device 600A according to the second embodiment, and Figure 8(b) is a front view of the disconnecting portion 400A and the moving body 500A. Note that the configuration of the circuit breaker device 600A according to the second embodiment is different from the configuration of the circuit breaker device 600 according to the first embodiment in terms of the configuration of the push-connecting portion 431A of the disconnecting portion 400A and the protruding portion 530A of the moving body 500A, but the other configurations are substantially the same as the configuration of the circuit breaker device 600 according to the first embodiment, and thus the description of the same configuration will be omitted.

[0089] like Figure 8 As shown, disconnection part 400A is a conductor made of metal such as copper, so as to be electrically connected to the circuit, and includes a base member 430A for being electrically connected to the circuit at both ends, and a separator 420A located between the base members 430A. The base member 430A includes a press-connection part 431A with a press member. The press-connection part 431A is also made of a conductor made of metal such as copper, so as to be electrically connected to the circuit. The end of the press-connection part 431A is a flat surface 432A, and the flat surface 432A contacts the side surface 421A on the front side of the separator 420A with a plate shape. Since the side surface 421A of the separator 420A is also a flat surface, the flat surface 432A of the press-connection part 431A and the side surface 421A of the separator 420A are in close contact with each other and in surface contact with each other. In addition, the base end 434A of the press-connection part 431A is fixed to the surface of the base member 430A.

[0090] The end surface 433A on the inner side of the base member 430A is a flat surface, and the end surface 433A contacts the side surface 421A on the rear side of the separator 420A having a plate shape. Since the side surface 421A of the separator 420A is also a flat surface, the end surface 433A and the side surface 421A of the separator 420A are in close contact with each other and in surface contact with each other.

[0091] In addition, the flat surface 432A of the pressing connection part 431A is attached to the compression spring 440A. Specifically, one end 441A of the compression spring 440A is connected to the flat surface 432A, and when the disconnecting part 400A is accommodated in the housing 300A, the other end 442A abuts against the inner wall of the accommodating part 310A. Therefore, the flat surface 432A is pressed against the separator 420A by the pressing force FA of the compression spring 440A. The contact surface of the base member 430A and the separator 420A, that is, the flat surface 432A of the pressing connection part 431A and the side surface 421A of the separator 420A are pressed by the pressing force FA of the compression spring 440A. Therefore, the base member 430A and the separator 420A as a separated body enter an assembled state so as to be electrically and physically connected to each other.

[0092] In particular, since the pressing force FA is applied to the contact surface of the base member 430A and the separator 420A, the contact resistance of the contact surface of the base member 430A and the separator 420A (the contact surface of the flat surface 432A of the pressing connection portion 431A and the side surface 421A of the separator 420A) can be suppressed to be low, and further, this state can be maintained for a long time. Since the separator 420A is also pressed toward the end surface 433A of the base member 430A by the pressing force FA of the compression spring 440A, the contact resistance of the end surface 433A on the back surface of the separator 420A and the side surface 421A can be suppressed to be low, and further, this state can be maintained for a long time.

[0093] like Figure 8 As shown, the moving body 500A includes a protrusion 530A protruding downward. The protrusion 530A is an arc extinguishing portion 533A made of an arc extinguishing material. The arc extinguishing portion 533A has a plate shape similar to the separator 420A, and the flat side surface 534A on the front side of the arc extinguishing portion 533A is configured to be able to be in close contact and surface contact with the flat surface 432A of the pressing connection portion 431A when the protrusion 530A moves downward as described below. Similarly, the flat side surface 534A on the rear side of the arc extinguishing portion 533A is configured to be able to be in close contact and surface contact with the end surface 433A of the base member 430A. Note that the arc extinguishing portion 533A can be made of any material as long as the material can extinguish an arc, and can be made by solidifying, for example, silicone resin, silica sand, etc. into a plate shape.

[0094] Next, we will refer to Fig. 9 and Fig.10 A circuit breaker device 600A of the present invention is described. Fig. 9 Shows something like Figure 6 A cross-sectional view of a circuit breaker device 600A, and Fig.10 The moving body 500A is shown in FIG. Fig. 9 A cross-sectional view of the state movement is shown.

[0095] like Fig. 9 As shown, the base member 430A of the disconnect portion 400A is connected to a part of the circuit, and the disconnect portion 400A constitutes a part of the circuit. Under normal circumstances, since the base member 430A and the separator 420A of the disconnect portion 400A are not separated from each other and are physically and electrically connected to each other, current flows in the circuit via the base member 430A and the separator 420A of the disconnect portion 400A.

[0096] Next, if Fig.10As shown, when an abnormality such as an overcurrent flowing through the circuit is detected, an abnormality signal is input to the power supply PA, and the gunpowder in the power supply PA explodes. Then, the moving body 500A is blown away from the first end 320A toward the second end 330A with force, and moves instantaneously toward the second end 330A in the accommodation portion 310A.

[0097] Then, the arc extinguishing part 533A of the moving body 500A forcefully pushes out the separator 420A on the second end 330A side. The separator 420A is pushed out along the PP axis, that is, along the extending direction of the short side of the disconnecting part 400A, and the separator 420A is separated from the base member 430A, and the base members 430A on both sides enter an electrically disconnected state. That is, the state in which the base members 430A on both sides of the disconnecting part 400A are energized via the separator 420A is disconnected, and overcurrent can be prevented from flowing through the circuit.

[0098] In addition, after the arc extinguishing portion 533A of the moving body 500A pushes the separating member 420A toward the second end 330A, the arc extinguishing portion 533A itself is connected between the base members 430A so as to be replaced with the separating member 420A. Specifically, the arc extinguishing portion 533A moving toward the second end 330A is slidably inserted between the flat surface 432A of the pressing connection portion 431A and the end surface 433A of the base member 430A. Even if a high-voltage arc is generated between the base members 430A on both sides, the arc extinguishing portion 533A can effectively extinguish the arc.

[0099] The arc extinguishing portion 533A and the separator 420A are separate bodies, but are not limited thereto, and the arc extinguishing portion 533A and the separator 420A may be fixed and integrated in an adjacent state. When the arc extinguishing portion 533A and the separator 420A are integrated, the assembly of the circuit breaker device 600A becomes easier than when the arc extinguishing portion 533A and the separator 420A are separate bodies. When the arc extinguishing portion 533A and the separator 420A are formed as one body, after the separator 420A is separated from the base member 430A, the arc extinguishing portion 533A is smoothly switched as it is, and is reliably connected between the base members 430.

[0100] The moving body 500A and the separating piece 420A are separating bodies, but are not limited thereto, and the moving body 500A and the separating piece 420A can be fixed and integrated in an adjacent state. In the known technology, since the separating piece 420A is formed integrally with the base member 430A, when the moving body 500A and the separating piece 420A are formed integrally, the moving body 500A and the entire disconnecting part 400A are also formed integrally, so there is a possibility that the size of the circuit breaker device becomes larger. However, in the present invention, since the separating piece 420A is a separating body from the base member 430A, even if the moving body 500A and the separating piece 420A are formed integrally, the moving body 500A and the entire disconnecting part 400A are not formed integrally, so it is impossible to make the size of the circuit breaker device larger. In addition, since the assembly man-hours are reduced, the assembly time can be shortened.

[0101] <Third Embodiment>

[0102] Next, we will refer to Fig.11 and Fig.12 A circuit breaker device 600B of the present invention according to the third embodiment is described. Note that Fig.11 Shows something like Figure 6 A cross-sectional view of a circuit breaker device 600B, and Fig.12 The moving body 500B is shown as Fig.11 Note that the configuration of the circuit breaker device 600B according to the third embodiment is different from the configuration of the circuit breaker device 600A according to the second embodiment in that the arc extinguishing material 700B is included, but the other configurations are substantially the same as the configuration of the circuit breaker device 600A according to the second embodiment, so the description of the same configuration will be omitted.

[0103] like Fig.11 As shown, the base member 430B of the disconnecting portion 400B is connected to a part of the circuit, and the disconnecting portion 400B constitutes a part of the circuit. Under normal circumstances, since the base member 430B and the separating member 420B of the disconnecting portion 400B are not separated from each other and are physically and electrically connected to each other, current flows in the circuit via the base member 430B and the separating member 420B of the disconnecting portion 400B.

[0104] The arc extinguishing material 700B is accommodated on the second end 330B side of the accommodating portion 310B. The arc extinguishing material 700B is a low-viscosity fluid arc extinguishing material having an arc extinguishing effect, such as silicone oil or silicone gel. The end side portion 422B on the lower side (second end 330B side) of the separator 420B is arranged in the arc extinguishing material 700B. On the other hand, the end side portion 423B on the upper side (first end 320B side) of the separator 420B is arranged above the arc extinguishing material 700B. The end side portion 423B on the upper side of the separator 420B is a boundary portion with the adjacent arc extinguishing portion 533B, and when the separator 420B moves downward as described below, the end side portion 423B becomes a terminal electrically connected to the base member 430B, that is, the connecting terminal portion 424B.

[0105] Next, if Fig.12 As shown, when an abnormality such as an overcurrent flowing through the circuit is detected, an abnormality signal is input to the power supply PB, and the gunpowder in the power supply PB explodes. Then, the moving body 500B is blown away from the first end 320B toward the second end 330B with force, and moves instantaneously toward the second end 330B in the accommodation portion 310B.

[0106] Then, the arc extinguishing portion 533B of the moving body 500B forcefully pushes out the separator 420B on the second end 330 side. The separator 420B is pushed out along the PP axis, that is, along the extending direction of the short side of the disconnecting portion 400B, and the separator 420B enters the arc extinguishing material 700B. Then, as Fig.12 As shown in the figure, before the separation piece 420B is separated from the base piece 430B, the end side portion 423B on the upper side of the separation piece 420B, that is, the connection terminal portion 424B is still in a state of being electrically and physically connected to the base pieces 430B on both sides. Therefore, since high current and high voltage are concentrated on the connection terminal portion 424B, there is a possibility that heat is concentrated on the connection terminal portion 424B or an arc is generated around the connection terminal portion 424B.

[0107] However, since the separator 420B has moved until the connection terminal portion 424B enters the arc extinguishing material 700B, the arc generated around the connection terminal portion 424B is effectively extinguished by the arc extinguishing material 700B. In addition, since the separator 420B having a plate shape moves in a state where the side surface 421B is erected along PP, i.e., along the extension direction of the short side of the disconnecting portion 400B, the end side portion 422B having a smaller surface area than the side surface 421B is pushed toward the arc extinguishing material 700B. Therefore, when the separator 420B moves on the second end 330B side, the resistance when traveling in the arc extinguishing material 700B can be reduced as much as possible. As a result, the circuit can be easily disconnected with less power, and the size and manufacturing cost of the circuit breaker device can be suppressed.

[0108] Note that subsequently, the separator 420B moves to the bottom on the second end 330B side of the accommodating portion 310B and is completely separated from the base member 430B, and the base members 430B on both sides enter an electrically disconnected state. That is, the state in which the base members 430B on both sides of the disconnecting portion 400B are energized via the separator 420B is disconnected, and overcurrent can be prevented from flowing through the circuit. The arc extinguishing material 700B is a low-viscosity fluid arc extinguishing material having an arc extinguishing effect, such as silicone oil or silicone gel, but is not limited thereto, and a granular arc extinguishing material or another form of arc extinguishing material can be accommodated in the accommodating portion 310B.

[0109] <Fourth Embodiment>

[0110] Next, we will refer to Fig.13 and Fig.14 A circuit breaker device 600C of the present invention according to a fourth embodiment will be described. Fig.13 is with Figure 6 Likewise, a cross-sectional view of a circuit breaker device 600C is shown, and Fig.14 It indicates that the moving object 500C is Fig.13 Note that the configuration of the circuit breaker device 600C according to the third embodiment is different from the configuration of the circuit breaker device 600A according to the second embodiment in that the arc extinguishing material 700C is included, but the other configurations are substantially the same as the configuration of the circuit breaker device 600A according to the second embodiment, so the description of the same configuration will be omitted.

[0111] like Fig.13 As shown, the base member 430C of the disconnecting portion 400C is connected to a part of the circuit, and the disconnecting portion 400C constitutes a part of the circuit. Under normal circumstances, since the base member 430C and the separating member 420C of the disconnecting portion 400C are not separated from each other and are physically and electrically connected to each other, current flows in the circuit via the base member 430C and the separating member 420C of the disconnecting portion 400C.

[0112] The arc extinguishing material 700C is installed in the accommodating portion 310C. The arc extinguishing material 700C is a solid arc extinguishing material made of silicone resin or the like. The arc extinguishing material 700C is provided on the front and rear sides of the separator 420C so as to contact the periphery of the end side portion 422C on the lower side (second end 330C side) of the separator 420C. The end side portion 423C on the upper side (first end 320C side) of the separator 420C is a boundary portion with the adjacent arc extinguishing portion 533C, and when the separator 420C moves downward as described below, the end side portion 423C becomes a terminal electrically connected to the base member 430C, i.e., a connecting terminal portion 424C.

[0113] Next, if Fig.14As shown, when an abnormality such as an overcurrent flowing through the circuit is detected, an abnormality signal is input to the power supply PC, and the gunpowder in the power supply PC explodes. Then, the moving body 500C is blown away from the first end 320C toward the second end 330C with force, and moves instantaneously toward the second end 330C in the accommodation portion 310C.

[0114] Then, the arc extinguishing portion 533C of the moving body 500C forcefully pushes out the separating piece 420C on the second end 330C side. The separating piece 420C is pushed out along the PP axis, that is, along the extending direction of the short side of the disconnecting portion 400C. Fig.14 As shown in the figure, before the separation piece 420C is separated from the base piece 430C, the end side portion 423C on the upper side of the separation piece 420C, that is, the connection terminal portion 424C is still in a state of being electrically and physically connected to the base pieces 430C on both sides. Therefore, since high current and high voltage are concentrated on the connection terminal portion 424C, there is a possibility that heat is concentrated on the connection terminal portion 424C or an arc is generated around the connection terminal portion 424C.

[0115] However, since the arc extinguishing material 700C is arranged at a position in contact with the connection terminal portion 420C of the separator 424C, the arc generated around the connection terminal portion 424C is effectively extinguished. The arc extinguishing material 700C is arranged to contact the side surface 421C of the separator 420C from the lateral side, and is not arranged below the end side portion 422C of the separator 420C. Therefore, when the separator 420C moves on the second end 330C side, the arc extinguishing material 700C does not hinder the movement of the separator 420C, and the resistance when the moving body 500C moves can be reduced as much as possible. As a result, the circuit can be easily disconnected with less power, and the size and manufacturing cost of the circuit breaker device can be suppressed.

[0116] Note that subsequently, the separator 420C moves to the bottom on the second end 330C side of the accommodating portion 310C and is completely separated from the base member 430C, and the base members 430C on both sides enter an electrically disconnected state. That is, the state in which the base members 430C on both sides of the disconnecting portion 400C are energized via the separator 420C is disconnected, and overcurrent can be prevented from flowing through the circuit. The arc extinguishing material 700C is a solid arc extinguishing material made of silicone or the like, but is not limited thereto, and may be a granular arc extinguishing material or other forms of arc extinguishing material.

[0117] <Fifth Embodiment>

[0118] Next, we will refer to Fig.15 A circuit breaker device 600D of the present invention according to the fifth embodiment is described. Note that Fig.154 is a perspective view of a disconnecting portion 400D and a moving body 500D of a circuit breaker device 600D according to the fifth embodiment. Note that the configuration of the circuit breaker device 600D according to the fifth embodiment is different from that of the circuit breaker device 600 according to the first embodiment in terms of the configuration of the disconnecting portion 400D, but the other configurations are substantially the same as those of the circuit breaker device 600 according to the first embodiment, and thus description of the same configurations will be omitted.

[0119] like Fig.15 As shown, the disconnecting portion 400D is a conductor made entirely of metal such as copper to be electrically connected to a circuit, and includes base members 430D for electrically connecting to the circuit at both ends, and a separating member 420D located between the base members 430D.

[0120] A base 430D ( Fig.15 The right side in the figure) includes a press-connection part 431D having a press piece. The press-connection part 431D is also made entirely of a conductor made of metal such as copper so as to be electrically connected to the circuit. The end of the press-connection part 431D is a flat surface 432D, and the flat surface 432D contacts the side surface 421D on the front side of the separator 420D having a plate shape. Since the side surface 421D of the separator 420D is also a flat surface, the flat surface 432D of the press-connection part 431D and the side surface 421D of the separator 420D are in close contact with each other and in surface contact with each other. In addition, the base end 434D of the press-connection part 431D is fixed to the surface of the base 430D. The end surface 433D on the inner side of the base 430D is a flat surface, and the end surface 433D contacts the side surface 421D on the rear side of the separator 420D having a plate shape. Since the side surface 421D of the separation piece 420D is also a flat surface, the one base piece 430D and the separation piece 420D are in close contact with each other and in surface contact with each other.

[0121] Another base member 430D ( Fig.15 The left side in the figure) is coupled and fixed to the separator 420D through the rotation axis 405D. The end surface 433D of the other base member 430D and the side surface 421D of the back side of the separator 420D are in close contact with each other and in surface contact with each other. As described later, the separator 420D can rotate around the rotation axis 405D while being electrically connected to the other base member 430D.

[0122] The flat surface 432D of the pressing connection portion 431D is attached to the compression spring 440D. Specifically, when the compression spring 400D is accommodated in the housing 300D, one end 441D of the compression spring 440D is attached to the flat surface 432D, and the other end 442D abuts against the inner wall of the accommodating portion 310D. Therefore, the flat surface 432D is pressed against the separator 420D by the pressing force FD of the compression spring 440D. The contact surface of a base member 430D and the separator 420D, that is, the flat surface 432D of the pressing connection portion 431D and the side surface 421D of the separator 420D are pressed by the pressing force FD of the compression spring 440D. Therefore, a base member 430D and the separator 420D as separate bodies are assembled to be electrically and physically connected to each other.

[0123] An arc extinguishing portion 533D made of an arc extinguishing material is provided on the upper side of the separator 420D. The arc extinguishing portion 533D is integrally fixed to the separator 420D and has a plate shape similar to that of the separator 420D. The flat side surface 534D on the front surface side of the arc extinguishing portion 533D is configured to be able to be in close contact and surface contact with the flat surface 432D of the pressing connection portion 431D when the separator 420D is pushed downward by the moving body 500D, as described below. Similarly, the flat side surface 534D on the back side of the arc extinguishing portion 533D is configured to be able to be in close contact and surface contact with the end surface 433D of a base member 430D. Note that the arc extinguishing portion 533D can be made of any material as long as the material can extinguish an arc, and can be made by curing, for example, silicone resin, silica sand, etc. into a plate shape.

[0124] In a normal situation, since one base piece 430D and the separation piece 420D of the disconnect portion 400D are not separated from each other and are physically and electrically connected to each other, current flows in a circuit via the base piece 430D and the separation piece 420D on both sides of the disconnect portion 400D.

[0125] Then, when an abnormality such as an overcurrent flowing through the circuit is detected, the protrusion 530D of the moving body 500D moving downward abuts against the upper end of the arc extinguishing portion 533D to forcefully push the arc extinguishing portion 533D and the separator 420D downward. Then, the arc extinguishing portion 533D and the separator 420D are pushed out along the PP axis, i.e., along the extension direction of the short side of the disconnecting portion 400D, and the arc extinguishing portion 533D and the separator 420D rotate downward around the rotation axis 405D. Then, the separator 420D is separated from one base member 430D, and the base members 430D on both sides enter an electrically disconnected state. That is, the state in which the base members 430D on both sides of the disconnecting portion 400D are energized via the separator 420D is disconnected, and overcurrent can be prevented from flowing through the circuit.

[0126] In addition, the arc extinguishing portion 533D and the separating member 420D rotate downward about the rotation axis 405D, but the arc extinguishing portion 533D disposed above the separating member 420D is connected to one base member 430D so that after the separating member 420D is separated from the one base member 430D ( Fig.15 The right side of the base member 430D is replaced with the separation member 420D. Specifically, the arc extinguishing portion 533D rotated downward is inserted while sliding between the flat surface 432D of the pressing connection portion 431D and the end surface 433D of the base member 430D. Even if a high-voltage arc is generated between the base members 430D on both sides, the arc extinguishing portion 533D can effectively extinguish the arc.

[0127] <Sixth Embodiment>

[0128] Then, see Fig.16 A circuit breaker device 600E of the present invention according to the sixth embodiment is described. Note that Fig.16 1 is a perspective view of a disconnecting portion 400E of a circuit breaker device 600E according to the sixth embodiment. Note that the configuration of the circuit breaker device 600E according to the sixth embodiment is different from that of the circuit breaker device 600 according to the first embodiment in terms of the configuration of the push-connecting portion 431E of the disconnecting portion 400E, but the other configurations are substantially the same as those of the circuit breaker device 600 according to the first embodiment, and thus description of the same configurations will be omitted.

[0129] The disconnecting part 400E is a conductor made entirely of a metal such as copper so as to be electrically connected to a circuit, and includes a base member 430E and a separating member 420E for electrically connecting to the circuit at both ends. The base member 430E includes a press-connecting part 431E including a pair of retaining members. The press-connecting part 431E has a Figure 4 The push-connection part 431 of the first embodiment shown has a substantially same configuration, but is different in the attachment direction. Specifically, the push-connection part 431E faces downward, and the push-connection part 431E holds the separation part 420E from both sides of the separation part 420E so that the separation part 420E is disposed below the base part 430E. Therefore, the base part 430E and the separation part 420E as a separation body are assembled to be electrically and physically connected to each other.

[0130] The disconnecting portion 400E has a long plate shape as a whole, and the short direction of the disconnecting portion 400E is along the direction of the PP axis perpendicular to the long axis QQ extending along the long direction of the disconnecting portion 400E. Then, when an abnormality such as an overcurrent flowing through the circuit is detected, the separating member 420E is strongly pushed downward by the moving body, and the separating member 420E moves along the PP axis, that is, along the extension direction of the short side of the disconnecting portion 400E, and is separated from the base member 430E. At this time, the separating member 420E moves along the contact surface of the base member 430E and the separating member 420E (the contact surface of the flat surface 432E of the pressing connecting portion 431E and the side surface 421E of the separating member 420E) in contact with the base member 430E. Note that the protrusion of the moving body moves through the gap X between the base members 430E on both sides to push the separating member 420E downward.

[0131] <Seventh Embodiment>

[0132] Then, see Fig.17 (a) A circuit breaker device 600F of the present invention according to the seventh embodiment is described. Note that Fig.17 (a) is a perspective view of a disconnecting portion 400F of a circuit breaker device 600F according to the seventh embodiment. Note that the configuration of the circuit breaker device 600F according to the seventh embodiment is different from that of the circuit breaker device 600 according to the first embodiment in the configuration of the base member 430E of the disconnecting portion 400F, but the other configurations are substantially the same as those of the circuit breaker device 600 according to the first embodiment, and thus description of the same configurations will be omitted.

[0133] The disconnecting part 400F is a conductor made entirely of a metal such as copper so as to be electrically connected to a circuit, and includes a base member 430F and a separator 420F for being electrically connected to the circuit at both ends. The base member 430F includes a press-connection part 431F cut into a groove shape. The width of the groove portion of the press-connection part 431F is slightly narrower than the thickness of the separator 420F. Therefore, when the separator 420F is inserted into the press-connection part 431F, the press-connection part 431F holds the separator 420F from both sides of the separator 420F.

[0134] The holding surface on the inner side of the pressing connection part 431F is a flat surface 432F, and the flat surface 432F is in contact with the side surface 421F of the separator 420F having a plate shape. Specifically, since the side surface 421F of the separator 420F is also a flat surface, the flat surface 432F of the pressing connection part 431F and the side surface 421F of the separator 420F are in close contact with each other and in surface contact with each other. The contact surfaces of the base member 430F and the separator 420F, that is, the flat surface 432F of the pressing connection part 431F and the side surface 421F of the separator 420F are pressed by the pressing force FF, and the pressing connection part 431F holds the separator 420F by the pressing force FF. Therefore, the base member 430F and the separator 420F as a separation body are assembled to be electrically and physically connected to each other.

[0135] In particular, since the pressing force FF is applied to the contact surfaces of the base member 430F and the separating member 420F, the contact resistance of the contact surfaces of the base member 430F and the separating member 420F (the contact surfaces of the flat surface 432F of the pressing connection portion 431F and the side surface 421F of the separating member 420F) can be suppressed to be low, and further, this state can be maintained for a long time.

[0136] In a state where the separator 420F is assembled to the base 430F, the disconnection portion 400F has a long plate shape as a whole, and the short direction of the disconnection portion 400F is along the direction of the PP axis perpendicular to the long axis QQ extending along the long direction of the disconnection portion 400F. Then, when an abnormality such as an overcurrent flowing through the circuit is detected, the separator 420F is strongly pushed downward by the moving body, and the separator 420F moves along the PP axis, that is, along the extension direction of the short side of the disconnection portion 400F, and is separated from the base 430F. At this time, the separator 420F moves along the contact surface of the base 430F and the separator 420F (the contact surface of the flat surface 432F of the pressing connection portion 431F and the side surface 421F of the separator 420F) in contact with the base 430F.

[0137] <Eighth Embodiment>

[0138] Then, see Fig.17 (b) A circuit breaker device 600G of the present invention according to the eighth embodiment is described. Note that Fig.17(b) is a perspective view of a disconnecting portion 400G of a circuit breaker device 600G according to the eighth embodiment. Note that the configuration of the circuit breaker device 600G according to the eighth embodiment is different from that of the circuit breaker device 600F according to the seventh embodiment in that a separating piece 420G of the disconnecting portion 400G includes a pressing connecting portion 426G, but the other configurations are substantially the same as those of the circuit breaker device 600F according to the seventh embodiment, and thus description of the same configurations will be omitted.

[0139] like Fig.17 As shown in (b), the separating piece 420G of the disconnecting part 400G also has a pressing connection part 426G cut into a groove shape. The width of the groove part of the pressing connection part 426G is slightly narrower than the thickness of the base member 430G. Therefore, when the pressing connection part 426G is inserted into the base member 430G, the pressing connection part 426G holds the base member 430G from both sides of the base member 430G. The holding surface on the inner side of the pressing connection part 426G is a flat surface 427G, and the flat surface 427G and the flat side surface 437G of the base member 430G are in close contact with each other and in surface contact with each other. The contact surface of the base member 430G and the separating piece 420G, that is, the side surface 437G of the base member 430G and the flat surface 427G of the pressing connection part 426G are pressed by the pressing force FG, and the pressing connection part 426G holds the base member 430G by the pressing force FG. Therefore, the base member 430G and the separated member 420G, which are separated bodies, are assembled to be electrically and physically connected to each other.

[0140] In particular, since the pressing force FG is applied to the contact surface of the base member 430G and the separating member 420G, the contact resistance of the contact surface of the base member 430G and the separating member 420G (the contact surface of the side surface 437G of the base member 430G and the flat surface 427G of the pressing connecting portion 426G) can be suppressed to be low, and further, this state can be maintained for a long time.

[0141] <Ninth Embodiment>

[0142] Next, we will refer to Fig.18 A circuit breaker device 600H of the present invention according to a ninth embodiment will be described. Note that Fig.18 (a) is a perspective view of a disconnecting portion 400H of a circuit breaker device 600H according to the ninth embodiment, and Fig.18(b) is a perspective view of the disconnecting portion 400H and the moving body 500H of the circuit breaker device 600H according to the ninth embodiment. Note that the configuration of the circuit breaker device 600H according to the fifth embodiment is different from that of the circuit breaker device 600 according to the ninth embodiment in terms of the configuration of the disconnecting portion 400H, but the other configurations are substantially the same as those of the circuit breaker device 600 according to the first embodiment, and thus description of the same configurations will be omitted.

[0143] like Fig.18 As shown in (a), the disconnecting portion 400H is a conductor made entirely of a metal such as copper in order to be electrically connected to a circuit, and includes a base member 430H whose two ends are electrically connected to the circuit and a pair of separated members (separated member 420H and separated member 420H'). Then, the pair of separated members (separated member 420H and separated member 420H') are attached so as to be held from both sides of the base member 430H. Specifically, a press-connecting portion 431H such as a screw or a rivet is passed through a gap X between the base member 430H on both sides, thereby connecting and fixing the pair of separated members (separated member 420H and separated member 420H') to each other. Then, the press-connecting portion 431H is securely fastened, thereby Fig.18 As shown in (b), a pair of separators (separator 420H and separator 420H') enter the state of holding the base member 430H from both sides by the pressing force FH. As a result, the base member 430H and separators (separator 420H and separator 420H') as separate bodies are assembled to be electrically and physically connected to each other.

[0144] The flat side surface 421H of the separation piece 420H is in close contact and surface contact with the flat side surface 437H on the front side of the base piece 430H, and the flat side surface 421H' of the separation piece 420H' is also in close contact and surface contact with the flat side surface 437H on the rear side of the base piece 430H. Fig.18 As shown, in the case where two separators (separator 420H and separator 420H') are connected to the base member 430H in surface contact, the contact area between the separator and the base member is doubled compared to the case where one separator is connected to the base member in surface contact. In this way, since the contact area can be doubled, the contact resistance can be reduced to about half. Since a pair of separators (separator 420H and separator 420H') having a plate shape are configured to be held from both sides of the base member 430H, the arrangement space of the pair of separators (separator 420H and separator 420H') can be reduced, and the increase in the size and manufacturing cost of the circuit breaker device can be suppressed.

[0145] Since the pressing force FH is applied to the contact surface of the base member 430H and the pair of separators (separator 420H and separator 420H'), the contact resistance of the contact surface of the base member 430H and the pair of separators (separator 420H and separator 420H') can be suppressed to be low, and further, this state can be maintained for a long time. Since the pair of separators (separator 420H and separator 420H') are configured to be fastened in a direction approaching each other by a pressing connection part 431H such as a screw or a rivet, a strong pressing force FH can be generated with a simple configuration, and the contact resistance can be further suppressed to be low. In addition, the pressing connection part 431H is not limited to a screw, a rivet, etc., as long as it is a structure that can fasten a pair of separators (separator 420H and separator 420H') in a direction approaching each other.

[0146] In a state where a pair of separation pieces (separation piece 420H and separation piece 420H') are assembled to the base piece 430H, the disconnection portion 400H has a long plate shape as a whole, and the short direction of the disconnection portion 400H is the direction along the PP axis perpendicular to the long axis QQ extending along the long direction of the disconnection portion 400H. Then, when an abnormality such as an overcurrent flowing through the circuit is detected, the protrusion 530H of the moving body 500H moving downward strongly pushes the pair of separation pieces (separation piece 420H and separation piece 420H') downward while passing through the gap X between the base pieces 430H. Then, the pair of separation pieces (separation piece 420H and separation piece 420H') coupled by the pressing connection portion 431H move along the PP axis, that is, move along the extending direction of the short side of the disconnection portion 400H, and are separated from the base piece 430H. At this time, the pair of separation members (separation member 420H and separation member 420H′) moves along the contact surfaces of the base member 430H and the pair of separation members (separation member 420H and separation member 420H′) in contact with the base member 430H.

[0147] <Tenth Embodiment>

[0148] Next, we will refer to Figures 19 to 22 A circuit breaker device 600I of the present invention according to the tenth embodiment is described. Note that Fig.19 4 is a perspective view of a disconnecting portion 400I and a solenoid type tripping device 800I of a circuit breaker device 600I according to a tenth embodiment, Fig. 20 is an exploded perspective view of a circuit breaker device 600I according to a tenth embodiment, Fig.21 It is assembling Fig. 20 A cross-sectional view taken along line BB of the circuit breaker device 600I in the state shown, and Fig. 22 is in the separation piece 420I and Fig.21Note that the configuration of the circuit breaker device 600I according to the tenth embodiment is different from the configuration of the circuit breaker device 600 according to the first embodiment in the configuration of the pressing connection portion 431I of the disconnecting portion 400I, including the configuration of the electromagnetic coil type tripping device 800I and the tension spring 470I replacing the moving body 500 and the power source P, and the configuration of the housing 300I, but the other configurations are basically the same as the configuration of the circuit breaker device 600 according to the first embodiment, so the description of the same configuration will be omitted.

[0149] like Fig.19 As shown, the disconnecting portion 400I is a conductor made entirely of a metal such as copper so as to be electrically connected to a circuit, and includes a base member 430I for being electrically connected to the circuit at both ends, and a separator 420I located between the base members 430I. The base member 430I includes a pressing connection portion 431I having a leaf spring shape, and the pressing connection portion 431I holds the separator 420I and the base member 430I. More specifically, a base end 434I of the pressing connection portion 431I is fixed to an end face 433I of the base member 430I, and an end 436I holds the separator 420I by overlapping and pressing the separator 420I on the base member 430I. The flat side surface 421I of the rear surface of the separator 420I and the flat end surface 433I of the base member 430I are in close contact with each other and in surface contact with each other. The contact surfaces of the base member 430I and the separator 420I, that is, the end surface 433I of the base member 430I and the side surface 421I of the separator 420I are pressed by the pressure FI, by which the connection portion 431I is pressed to hold the separator 420I. Therefore, the base member 430I and the separator 420I as separate bodies are assembled to be electrically and physically connected to each other.

[0150] In particular, since pressure FI is applied to the contact surfaces of the base member 430I and the separator 420I, the contact resistance of the contact surfaces of the base member 430I and the separator 420I (the contact surfaces of the end surface 433I of the base member 430I and the side surface 421I of the separator 420I) can be suppressed to be low, and further, this state can be maintained for a long time.

[0151] The circuit breaker device 600I of the present invention according to the tenth embodiment includes an electromagnetic coil type tripping device 800I and a tension spring 470I as a power mechanism for moving the separation member 420 as described in the first embodiment, that is, a power mechanism for moving the separation member 420I instead of the power source P. The electromagnetic coil type tripping device 800I uses the existing principles conventionally used, and the configuration of the electromagnetic coil type tripping device 800I will be described in detail. Specifically, the electromagnetic coil type tripping device 800I includes a fixed iron core 810I, a coil 820I wound around the fixed iron core 810I, and an operating iron piece 830I. One end 821I of the coil 820I is electrically connected to a base member 430I ( Fig.19 The left side in the figure), and the other end 822I of the coil 820I is electrically connected to the fuse 840I. In addition, the fuse 840I is electrically connected to another base member 430I ( Fig.19 In this way, the base member 430I on both sides is electrically connected to the coil 820I via the fuse 840I. Note that the power mechanism includes a power source P, or an electromagnetic coil type trip device 800I and a tension spring 470I, but is not limited thereto, and any configuration may be adopted as long as the separation member can move.

[0152] The operating iron piece 830I is pivotally supported by the base 801I through the rotating shaft 831I, and the operating iron piece 830I is rotatable around the rotating shaft 831I. Since the end 832I of the operating iron piece 830I is pulled by the tension spring 802I fixed to the base 801I, the terminal 833I on the opposite side of the end 832I is separated from the head 461I of the shaft 460I.

[0153] The separator 420I is attached to the attachment portion 450I to which the shaft 460I and the tension spring 470I are coupled. The head 461I of the shaft 460I is locked to the fixing plate 480I, which is fixed to the housing 300I described later. Specifically, the fixing plate 480I includes a locking hole 481I having a narrower width than the head 461I and an insertion hole 482I having a wider width than the head 461I. The locking hole 481I and the insertion hole 482I are continuous, and as described below, the state can be changed from a state in which the head 461I is locked around the locking hole 481I to a state in which the head 461I moves to the insertion hole 482I and the head 461I slides down through the insertion hole 482I and falls off. One end 471I of the tension spring 470I is fixed to the attachment portion 450I attached to the separator 420I, and the other end 472I is fixed to a portion of the housing 300I.

[0154] Next, we will refer to Fig. 20 and Fig.21Describe the aspect that the electromagnetic coil type tripping device 800I and the disconnecting portion 400I are accommodated in the housing 300I. The housing 300I includes a separate housing member divided into a front portion and a rear portion, and the electromagnetic coil type tripping device 800I and the disconnecting portion 400I can be accommodated and sealed in the separate housing member. Specifically, the electromagnetic coil type tripping device 800I is accommodated in the upper accommodation portion 350I on the first end 320I side. The lower wall portion 351I of the upper accommodation portion 350I is provided with a through hole 352I, through which the head 461I of the shaft 460I can be inserted. The fixing plate 480I is fixed to the lower wall portion 351I so that the locking hole 481 and the insertion hole 482I of the fixing plate 480I overlap with the through hole 352I. Furthermore, the lower wall portion 351I is provided with a through hole 353I through which the end portion 821I of the coil 820I is inserted and a through hole 354I through which the electric wire 841I of the fuse 840I is inserted.

[0155] In addition, the disconnecting portion 400I is accommodated in the lower accommodation portion 360I on the second end 330I side. Both sides of the lower accommodation portion 360I are provided with through holes 362I through which the base member 430I of the disconnecting portion 400I can be inserted, and the disconnecting portion 400I is accommodated by being supported by the through holes 362I on both sides so as to pass through the lower accommodation portion 360I. The lower wall portion 361I of the lower accommodation portion 360I is provided with a fixing portion 363I fixing the end portion 472I of the tension spring 470I.

[0156] The circuit breaker device 600I is used by being attached to a circuit that is desired to be protected. Specifically, the base member 430I of the disconnecting portion 400I is connected to a portion of the circuit, and the disconnecting portion 400I constitutes a portion of the circuit. Under normal circumstances, since the base member 430I and the separator 420I of the disconnecting portion 400I are not separated from each other and are physically and electrically connected to each other, current flows in the circuit via the base member 430I and the separator 420I of the disconnecting portion 400I. Note that although the tension pulling toward the second end 330I acts on the separator 420I by the tension spring 470I, the head 461I of the shaft 460I fixed to the separator 420I is engaged with the fixing plate 480I, so that the separator 420I does not move toward the second end 330I.

[0157] Subsequently, a description will be given of a state in which the circuit breaker device 600I disconnects the circuit when an abnormality such as an overcurrent flowing through the circuit occurs. When an overcurrent exceeding a predetermined threshold value flows from the circuit to the coil 820I via the base member 430I, the operating iron piece 830I is attracted to the fixed iron core 810I by the magnetic field generated in the fixed iron core 810I. Since the suction force at this time is stronger than the tension of the tension spring 802I, the operating iron piece 830I rotates around the rotating shaft 831I toward the fixed iron core 810I. Then, the end 833I of the operating iron piece 830I abuts against the head 461I of the shaft 460I, and moves the head 461I from the locking hole 481I to the insertion hole 482I.

[0158] When the head 461I of the shaft 460I comes out of the insertion hole 482I to the second end 330I side, the shaft 460I and the fixing plate 480I are separated. Fig. 22 As shown, due to the tension pulled toward the second end 330I by the tension spring 470I, the separator 420I moves toward the second end 330I. The separator 420I is pushed out along the PP axis, that is, pushed out along the extension direction of the short side of the disconnection part 400I (that is, the short direction), the separator 420I is separated from the base member 430I, and the connection between the base members 430I on both sides is brought into a disconnected state. That is, the state in which the base members 430I on both sides of the disconnection part 400I are energized via the separator 420I is disconnected, and overcurrent can be prevented from flowing through the circuit. At this time, the separator 420I moves in contact with the base member 430I along the contact surface of the base member 430I and the separator 420I (the contact surface of the end face 433I of the base member 430I and the side face 421I of the separator 420I).

[0159] Immediately after the separator 420I is separated from the base member 430I, there is a possibility that an arc is generated between the base members 430I. However, immediately after the separator 420I is separated from the base member 430I, the overcurrent II flowing through the circuit is induced to the fuse 840I via the wire 841I. The overcurrent II instantly melts the fuse part in the fuse 840I, and the arc occurring in the fuse 840I can be safely and quickly extinguished by the arc extinguishing material in the fuse 840I. As a result, it is possible to prevent an arc from being generated between the base members 430I immediately after the separator 420I is separated from the base member 430I.

[0160] Note that the operating iron piece 830I is attracted by the magnetic field generated in the fixed iron core 810I, whereby the operating iron piece 830I rotates to disengage between the shaft 460I and the fixed plate 480I, but the present invention is not limited thereto, and any configuration may be adopted as long as the shaft 460I and the fixed plate 480I can be disengaged when an abnormality such as an overcurrent flowing through the circuit is detected. For example, when an abnormality such as an overcurrent flowing through the circuit is detected, a power source such as gunpowder may explode in response to an abnormality signal, and the operating iron piece 830I may be rotated by the power, and the shaft 460I and the fixed plate 480I may be disengaged.

[0161] <Eleventh Embodiment>

[0162] Next, we will refer to Fig.23 A circuit breaker device 600J of the present invention according to the eleventh embodiment is described. Note that Fig.23 6 is an exploded perspective view of a circuit breaker device 600J according to the eleventh embodiment. Note that the configuration of the circuit breaker device 600J according to the eleventh embodiment is different from that of the circuit breaker device 600A according to the second embodiment in terms of the configuration of the protrusion 530J and the inclusion of a fuse 601J, but the other configurations are substantially the same as those of the circuit breaker device 600A according to the second embodiment, and thus description of the same configurations will be omitted.

[0163] like Fig.23 As shown, the protrusion 530J of the moving body 500J of the circuit breaker device 600J is a plate-shaped insulator 531J. The insulator 531J is adjacent to the upper side of the separator 420J and is provided integrally or separately from the separator 420J. In addition, a pair of electrodes 532J made of metal are provided on both sides of the insulator 531J, and the pair of electrodes 532J are insulated from each other by the insulator 531J. A pair of electrodes 532J is connected to the fuse 601J through a wire 533J. The fuse 601J is an existing fuse filled with a fuse element 602J made of a metal conductor such as copper and an arc extinguishing material 603J on the periphery of the fuse element 602J. The fuse element 602J is provided with a fuse part 604J, which generates heat and melts when an unintentional overcurrent flows through a circuit, etc. Note that, for visibility of the configuration of the protrusion 530J, the protrusion 530J is shown separately from the main body 510J in the figure, but the protrusion 530J is actually fixed to the main body 510J. The fuse 601J is attached to any position of the circuit breaker device 600J.

[0164] Then, when an abnormality such as an overcurrent flowing through the circuit is detected, the circuit breaker device 600J disconnects the circuit in a manner substantially similar to that of the reference circuit. Fig. 9 and Fig.10However, in the circuit breaker device 600J according to the eleventh embodiment, when the moving body 500J moves downward and the insulator 531J pushes out the separating piece 420J and moves to the second end 330J side, the electrode 532J of the insulator 531J is gradually inserted while sliding between the flat surface 432J of the pressing connection portion 431J and the end surface 433J of the base member 430J. In this way, since the electrode 532J of the insulator 531J is gradually inserted along with the movement of the moving body 500J until the separating piece 420J is completely separated from the base member 430J, the separating piece 420J and the base member 430J are connected, and the electrode 532J of the insulator 531J is also connected to the base member 430J.

[0165] Then, when the separator 420J is completely separated from the base member 430J as the moving body 500J moves, the base member 430J has been electrically connected to the fuse 601J through the electrode 532J and the wire 533J, so the overcurrent IJ is smoothly and reliably induced to the fuse 601J. In this way, in the process of separating the separator 420J from the base member 430J, the separator 420J is continuously replaced with the electrode 532J, and the base member 430J is reliably connected to the fuse 601J. Therefore, when the separator 420J is completely separated from the base member 430J and the circuit is disconnected, it is possible to prevent the generation of an arc caused by the fault current IJ between the base members 430J on both sides. In addition, the fault current IJ induced in the fuse 601J is quickly disconnected by the fuse part 604J of the fuse 601J that is fused, and is safely and reliably disconnected by the arc extinguishing material 603J.

[0166] The circuit breaker device of the present invention is not limited to the above-described embodiments, and various modifications and combinations may be made within the scope of the claims and the scope of the embodiments, and these modifications and combinations are also included in the scope of the claims.

Claims

1. A circuit breaker device, comprising: A disconnection portion, the disconnection portion forming part of an electric circuit, wherein The disconnecting portion includes base members on both sides and a separating member connected between the base members, and The circuit breaker device includes a press-connection portion, which connects the contact surfaces of the base member and the separation member while pressing, and is configured so that the separation member moves through a power mechanism while contacting the base member along the contact surface and separates from the base member, thereby disconnecting the connection between the base members.

2. The circuit breaker device according to claim 1, wherein An arc extinguishing portion is provided adjacent to the separation member, and After the separation member moves to disconnect the connection between the base members, the arc extinguishing portion is connected between the base members.

3. The circuit breaker device according to claim 2, wherein the arc extinguishing portion is formed integrally with the separation member.

4. A circuit breaker device according to any one of claims 1 to 3, wherein The arc extinguishing material having a fluid shape or a particle shape is arranged in the moving direction of the separating member, and When the separating member moves, the separating member enters the arc extinguishing material up to the connecting terminal portion of the separating member. 5 . The circuit breaker device according to claim 1 , comprising an arc extinguishing material provided at a position contacting the connection terminal portion of the separating member when the separating member moves.

6. A circuit breaker device according to any one of claims 1 to 3, comprising: A moving body that moves between a first end equipped with the power mechanism and a second end opposite to the first end, wherein The moving body is configured to move by the power of the power mechanism to separate the separation member from the base member, and The moving body is formed integrally with the separating member.

7. The circuit breaker device according to claim 1, comprising: A fuse comprising a fuse portion and an arc extinguishing material; and an insulator adjacent to the separator, wherein The insulator is provided with a pair of electrodes connected to the fuse, and When the separation member moves to disconnect the connection between the base members, the electrodes of the insulator are connected between the base members.

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