Cut-out switch comprising conductive member having elasticity

Abstract

The present invention relates to a cut-out switch comprising a conductive member having elasticity, which is configured such that the conductive state can be stably maintained and, if the fuse is melted and broken, the current-limiting fuse can be quickly separated from the insulating portion. The cut-out switch comprising a conductive member having elasticity according to the present invention comprises: an insulating portion; a current-limiting fuse disposed to be spaced apart from the insulating portion, both ends of the current-limiting fuse being blocked, and a striker protruding from the lower end thereof so as to protrude when an accident current occurs; a link separating / supporting portion having one end fixedly coupled to the upper end of the insulating portion and having the other end detachably coupled to the current-limiting fuse such that, when the striker protrudes, same supports the current-limiting fuse so as to be separated; and a link rotating / supporting portion for connecting the lower portion of the insulating portion and the lower portion of the current-limiting fuse such that, when the striker protrudes, same supports the current-limiting fuse so as to rotate downwards. The link rotating / supporting portion has the configuration of a conductive member having elasticity such that, in a normal state, same plays the role of conducting currents and, if the striker protrudes due to an accident current occurring, same pushes the lower portion of the current-limiting fuse, thereby quickly blocking the current.

Description

Cut-out switch having a conductive member with elasticity

[0001] The present invention relates to a cut-out switch, and more specifically, to a cut-out switch capable of stably maintaining a current-carrying state and quickly separating a current-limiting fuse from an insulating portion when the fuse blows.

[0002] Power distribution systems typically employ various devices to prevent damage by interrupting current flow in the event of a fault current. Among these devices is the cut-out switch (COS).

[0003] A cut-out switch (COS) is a protective device installed on the pressure side of a transformer used to transmit and distribute power from a power system to a user, to protect the transformer from fault currents (overcurrent, overload current) occurring at the user.

[0004] These cut-out switches (COS) are largely composed of an insulating part (insulator part) and a fuse holder. When a fault current occurs, the fuse link is cut off internally, and the fuse holder is separated from the insulating part to allow visual confirmation.

[0005] The cut-out switch is provided with a lower assembly that rotates the fuse holder in the insulating part when a fault current occurs, and an upper assembly that releases the engagement state when the fuse holder is rotated is provided on the upper side of the fuse holder.

[0006] The fuse link mounted on the fuse holder of a conventional cut-out switch (COS) is a non-current-limiting explosive fuse. If an accident current (overcurrent or overload current) occurs in the cut-out switch (COS), gas is released outside the fuse, generating noise and sparks. This gas and sparks may cause secondary damage.

[0007] To compensate for these shortcomings, various cut-out switch (COS) technologies have been developed and used.

[0008] The technology in the patent literature related to cut-out switches (COS)

[0009] Improved current limiting fuse and dropout fuse holder, registered patent no. 10-0370818,

[0010] Cut-out switch, registered patent no. 10-1670422,

[0011] Current-limiting fuse cut-out switch having a current-carrying member, registered patent number 10-2260566,

[0012] Cut-out switch, patented by Publication No. 10-2024-0003933,

[0013] Various technologies such as these are provided.

[0014] Figure 1 illustrates a conventional cut-out switch (COS).

[0015] A cut-out switch (COS) comprises: an insulating portion (10); a current-limiting fuse (20) spaced apart from the insulating portion (10), having both ends blocked and a striker (21) protruding at the bottom when a fault current occurs; an upper racket (31) having one end fixedly connected to the upper end of the insulating portion (10) and the other end detachably connected to the current-limiting fuse (20) so as to support the current-limiting fuse (20) to be separated when the striker (21) protrudes; a link separation support portion (300) comprising a contact plate (32) in contact with the upper end of the current-limiting fuse (20); a coil spring (33) elastically supporting the contact plate (32); and an upper guide hole (34) for inserting and guiding the upper end of the current-limiting fuse (20). A fuse fixing clamp (41) that connects the lower part of the insulating part (10) and the lower part of the current-limiting fuse (20), and is fixedly connected to the lower part of the current-limiting fuse (20) so that the current-limiting fuse (20) rotates downward when the striker (21) protrudes, a lower support bracket (42) that is fixedly connected to the insulating part (10), and a rotation operating member (43) that connects the fuse fixing clamp (41) and the lower support bracket (42) to each other, one end of which is rotatably connected to the fuse fixing clamp (41) around a clamp rotation axis (P1), and a middle part of which is rotatably connected to the lower support bracket (42) around a link rotation axis (P2), and one end of which is in contact with the lower end of the current-limiting fuse (20), and the other end of which is connected to the link rotation axis (P2), and It is composed of a link rotation support member (40) which is elastically supported by an elastic member installed on the link rotation axis (P2) and rotates around the link rotation axis (P2) when the striker (21) protrudes, and a current-carrying member (45) which has one end installed on the fuse fixing clamp (41) and the other end installed on the rotation operation member (43).

[0016] This conventional cut-out switch (COS) can maintain a safe current state between the fuse fixing clamp (41) and the rotation operation member (43) by having a current-carrying member (45).

[0017] The present invention provides a cut-out switch that can maintain a stable current state and at the same time, can separate a current-limiting fuse more accurately and quickly than a conventional cut-out switch (COS) when a fault current occurs.

[0018] That is, the present invention provides a cut-out switch that is provided with a current-carrying member so that a current-carrying state can be stably maintained, and the current-carrying member has elasticity, so that when a fault current occurs, a current-limiting fuse can be separated more accurately and quickly by the current-carrying member having elasticity.

[0019] The present invention relates to a cut-out switch having a current-carrying member having elasticity, comprising: an insulating member; a current-limiting fuse disposed to be spaced apart from the insulating member, having both ends blocked and a striker provided at the lower end to protrude when a fault current occurs; a link separation support member having one end fixedly connected to an upper end of the insulating member and the other end detachably connected to the current-limiting fuse to support the current-limiting fuse so that it is separated when the striker protrudes; and a link rotation support member connecting a lower portion of the insulating member and a lower portion of the current-limiting fuse and supporting the current-limiting fuse so that it rotates downward when the striker protrudes. The link rotation support member includes a current-carrying member having elasticity that performs a current-carrying function in a normal state and pushes out a lower portion of the current-limiting fuse when the striker protrudes due to the occurrence of a fault current, thereby enabling rapid disconnection.

[0020] The above link rotation support part comprises: a fuse fixing clamp fixedly connected to the lower part of the current-limiting fuse; a lower support bracket fixedly connected to the insulating part; a rotation operating member connecting the fuse fixing clamp and the lower support bracket, wherein one end of the fuse fixing clamp is rotatably connected to the fuse fixing clamp around a clamp rotation axis, and a middle portion of the fuse fixing clamp is rotatably connected to the lower support bracket around a link rotation axis; a flipper having one end in contact with the lower end of the current-limiting fuse, the other end of the flipper is connected to the link rotation axis, and is elastically supported by an elastic member installed on the link rotation axis so as to rotate around the link rotation axis when the striker protrudes; It includes a conductive member having elasticity, which is fixed at one end to the above-mentioned rotating member and has the other end in contact with the above-mentioned fuse fixing clamp, so as to conduct current between the above-mentioned fuse fixing clamp and the above-mentioned rotating member, and is installed in a compressed (pressurized) state to push out the fuse fixing clamp when the striker protrudes due to the occurrence of an accidental current.

[0021] The above flipper is formed with a catchable bend to prevent it from rotating under normal load, and a catchable end is formed on the lower side of the fuse fixing clamp to catch the catchable bend, and one end of the conductive member having elasticity is brought into contact with the catchable end.

[0022] The conductive member having the above elasticity has at least one bent portion to have compressive elasticity.

[0023] The conductive member having the above elasticity uses a dissimilar metal plate composed of a plate for conductive material and a plate for elastic material.

[0024] The above-mentioned plate for the conductive material is made of copper, and the plate for the elastic material is made of spring steel.

[0025] The cut-out switch having a conductive member having elasticity according to the present invention can maintain a stable conductive state by providing a conductive member having elasticity in a link rotation support portion, and can increase safety by enabling rapid disconnection in the event of an accident.

[0026] That is, the cut-out switch having a current-carrying member having elastic capability according to the present invention can maintain a stable current-carrying state by installing the current-carrying member having elastic capability in a compressed (pressurized) state between the fuse fixing clamp and the rotation operating member among the components of the link rotation support section, and when the striker protrudes due to the occurrence of an accident current, the fuse fixing clamp can be quickly pushed out so that the upper part of the current-limiting fuse can be separated from the link separation support section.

[0027] Figure 1 is a schematic diagram of a conventional cut-out switch.

[0028] FIG. 2 is a schematic diagram of a cut-out switch having a conductive member having elasticity, showing an embodiment of the present invention.

[0029] FIG. 3 is a detailed view of the main parts of a cut-out switch having a conductive member having elasticity, showing an embodiment of the present invention.

[0030] FIG. 4 is a schematic diagram showing the operating state of the main part of a cut-out switch having a conductive member having elasticity according to an embodiment of the present invention.

[0031] Fig. 5 is a perspective view showing a first embodiment of a conductive member having elasticity, which is a main component of a cut-out switch having a conductive member having elasticity according to the present invention.

[0032] Fig. 6 is a schematic diagram of a state in which a conductive member having the elastic capacity shown in Fig. 5 is installed.

[0033] Fig. 7 is a perspective view showing a second embodiment of a conductive member having elasticity, which is a main component of a cut-out switch having a conductive member having elasticity according to the present invention.

[0034] Fig. 8 is a schematic diagram of a state in which a conductive member having the elastic capacity shown in Fig. 7 is installed.

[0035] Fig. 9 is a perspective view showing a third embodiment of a conductive member having elasticity, which is a main component of a cut-out switch having a conductive member having elasticity according to the present invention.

[0036] Fig. 10 is a schematic diagram of a state in which a conductive member having the elastic capacity shown in Fig. 9 is installed.

[0037] [Explanation of symbols]

[0038] COS: Cut-out switch with a current-carrying member having elasticity

[0039] 100: Insulation

[0040] 110: Upper power supply 120: Lower power supply

[0041] 200: Korean Wave Fuse

[0042] 210: Upper joint 220: Lower joint

[0043] 230: Striker

[0044] 300: Link Separation Branch

[0045] 310: Upper support bracket 320: Contact plate

[0046] 330: Coil spring 340: Upper guide hole

[0047] 400: Link Rotation Support Unit

[0048] 410: Fuse fixing clamp 411: Clamp fixing end

[0049] 412: Clamp fastening member 413: Shaft coupling leg

[0050] 414: Clamp rotation axis

[0051] 420: Lower support bracket 421: Side plate

[0052] 430: Rotating operating member 431: Curved portion

[0053] 434: Link pivot

[0054] 440: Flipper 441: Hook-and-loop fastener

[0055] 450: Conductive member 451: Plate for conducting material

[0056] 452: Plate for elastic material 453; Fixing part

[0057] 454: Current-carrying contact

[0058] 470: Hook end 471: Insert for bending

[0059] 472: Contact surface for current transmission

[0060]

[0061] The present invention provides a cut-out switch having a current-carrying member having elasticity, comprising: an insulating portion (100); a current-limiting fuse (200) disposed spaced apart from the insulating portion (100), having both ends blocked and a striker (230) provided at the lower end to protrude when a fault current occurs; a link separation support portion (300) having one end fixedly connected to the upper end of the insulating portion (100) and the other end detachably connected to the current-limiting fuse (200) to support the current-limiting fuse (200) so that it is separated when the striker (230) protrudes; and a link rotation support portion (400) connecting the lower portion of the insulating portion (100) and the lower portion of the current-limiting fuse (200) and supporting the current-limiting fuse (200) so that it rotates downward when the striker (230) protrudes.

[0062] The above link rotation support member (400) includes a current-conducting member (450) having at least one curved portion to have compressive elasticity so that it performs a current-conducting role in a normal state and can quickly cut off by pushing out the lower part of the current-limiting fuse (200) when the striker (230) protrudes due to the occurrence of an accidental current.

[0063]

[0064] Another invention, a cut-out switch having a current-carrying member having elasticity, comprises: an insulating portion (100); a current-limiting fuse (200) spaced apart from the insulating portion (100), having both ends blocked and a striker (230) provided at the lower end to protrude when a fault current occurs; a link separation support portion (300) having one end fixedly connected to the upper end of the insulating portion (100) and the other end detachably connected to the current-limiting fuse (200) to support the current-limiting fuse (200) so that it is separated when the striker (230) protrudes; and a link rotation support portion (400) connecting the lower portion of the insulating portion (100) and the lower portion of the current-limiting fuse (200) and supporting the current-limiting fuse (200) so that it rotates downward when the striker (230) protrudes.

[0065] The above link rotation support member (400) comprises: a fuse fixing clamp (410) fixedly coupled to the lower portion of the current-limiting fuse (200); a lower support bracket (420) fixedly coupled to the insulating member (100); a rotation operation member (430) that connects the fuse fixing clamp (410) and the lower support bracket (420) to each other, and has one end rotatably coupled to the fuse fixing clamp (410) about a clamp rotation axis (419) and a middle portion rotatably coupled to the lower support bracket (420) about a link rotation axis (434); A flipper (440) having one end in contact with the lower end of the current-carrying fuse (200), the other end coupled to the link rotation shaft (434), and elastically supported by an elastic member (445) installed on the link rotation shaft (434) so ​​as to rotate around the link rotation shaft (434) when the striker (230) protrudes; and an elastic conducting member (450) installed in a compressed state so as to have one end fixed to the rotation operating member (430) and the other end in contact with the fuse fixing clamp (410), so as to conduct current between the fuse fixing clamp (410) and the rotation operating member (430) in a normal state, and to push out the fuse fixing clamp (410) when the striker (230) protrudes due to the occurrence of an accident current so as to enable a quick cut-off.

[0066]

[0067] The cut-out switch having a current-carrying member having elasticity according to the present invention is configured to stably maintain a current-carrying state and to quickly separate a current-limiting fuse from an insulating portion when the fuse is blown.

[0068] Figure 2 is a front view showing the front configuration of a cut-out switch (COS) having a conductive member having elasticity.

[0069] Referring to Figure 2,

[0070] The present invention provides a cut-out switch (COS) having a current-carrying member having elasticity, which includes an insulating portion (100), a current-limiting fuse (200) that is electrically connected to the insulating portion (100) and rotates to cut off and separate current when a fault current occurs, a link separation support portion (300) that connects the upper portion of the insulating portion (100) and the upper portion of the current-limiting fuse (200) to each other and supports the upper portion of the current-limiting fuse (200) to be separated when a fault current occurs, and a link rotation support portion (400) that connects the lower portion of the insulating portion (100) and the lower portion of the current-limiting fuse (200) to each other and supports the current-limiting fuse (200) to be rotated when a fault current occurs.

[0071] The above insulating part (100) is formed of an insulator, which is an insulator. An upper current-carrying terminal (110) is provided on the upper part of the insulating part (100), and a lower current-carrying terminal (120) is provided on the lower part.

[0072] The above-mentioned current-limiting fuse (200) has an upper coupling end (210) and a lower coupling end (220) that are electrically connected to the upper current-conducting end (110) and the lower current-conducting end (120) of the insulating part (100). The current-limiting fuse (200) according to the present invention is provided as a current-limiting type with both ends blocked.

[0073] A striker (230) that protrudes outward when a fault current occurs is provided at the bottom of the current-limiting fuse (200). During normal operation, the striker (230) remains embedded within the lower connection section (220) of the current-limiting fuse (200), and when a fault current occurs, it protrudes out of the lower connection section (220) and operates the flipper (440) of the link rotation support section (400).

[0074]

[0075] The above link separation support member (300) is configured to support the upper coupling end (210) of the current-limiting fuse (200) to be separated when the striker (230) of the current-limiting fuse (200) is operated due to the occurrence of a fault current. The link separation support member (300) supports the upper current-carrying end (110) of the insulating member (100) and the upper coupling end (210) of the current-limiting fuse (200) to be energized, and supports the upper coupling end (210) to be separated when a fault current occurs.

[0076] The above-mentioned link separation support member (300) includes an upper support bracket (310) horizontally arranged on the upper portion of the upper current-carrying member (110), a contact plate (320) that is installed to have elasticity by being coupled at one end to the upper support bracket (310) and to come into contact with the upper coupling end (210) of the current-limiting fuse (200), a coil spring (330) that is installed to apply elasticity to the contact plate (320) so that a stable contact state can be maintained with the upper coupling end (210) located at the lower side, an upper guide member (340) coupled to the upper support bracket (310) and supporting the side surface of the current-limiting fuse (200), and an upper pad (350) provided at the end of the upper support bracket (310).

[0077]

[0078] The configuration of the aforementioned insulating portion (100), the current-type fuse (200), and the link separation support portion (300) is a configuration known in the background technology.

[0079]

[0080] Referring to Figures 2 and 3,

[0081] The link rotation support member (400) is configured so that when an accident current occurs, the current-limiting fuse (200) rotates downwards to separate the upper current-carrying end (110) and the upper coupling end (210) of the insulating part (100) connected to the link separation support member (300).

[0082] The above link rotation support member (400) comprises a fuse fixing clamp (410) fixed to the lower connection end (220) of the current-carrying fuse (200), a lower support bracket (420) fixedly connected to the lower current-carrying end (120) of the insulating part (100), a rotation operation member (430) that supports the fuse fixing clamp (410) to be rotatable with respect to the lower support bracket (420), a flipper (440) that transmits the protrusion of the striker (230) to the rotation of the rotation operation member (430), a current-carrying member (450) having an elastic ability to conduct current through the fuse fixing clamp (410) and the rotation operation member (430), a lower pad (460) provided at the end of the lower support bracket (420), and a lower pad (460) provided on one side of the lower portion of the fuse fixing clamp (410). It includes a configuration of a hanging end (470) formed to protrude downward.

[0083] The above fuse fixing clamp (410) is fixed to the lower joint (220) of the current-limiting fuse (200) and is rotatably connected to the lower support bracket (420). As a result, the current-limiting fuse (200) can also be rotated together with the fuse fixing clamp (410).

[0084] The above fuse fixing clamp (410) is usually formed in a ring shape that surrounds the lower coupling section (220). A clamp fixing section (411) is provided at the end of the fuse fixing clamp (410), and a coupling hole for a clamp fastening member (412) such as a bolt or nut is formed in the clamp fixing section (411), and the fuse fixing clamp (410) is firmly fixed to the lower coupling section (220) by the clamp fastening member (412).

[0085] A pair of shaft coupling legs (413) are formed extending from the rear of the above fuse fixing clamp (410). The shaft coupling legs (413) have a through-hole for rotating the shaft coupling, and one end portion having a through-hole for rotating the rotational operating member (430) is arranged between the pair of shaft coupling legs (413), and a clamp rotational axis (414) is formed that passes through the through-hole formed in the end portion of the rotational operating member (430) and the rotational shaft coupling holes of the pair of shaft coupling legs (413).

[0086] The above lower support bracket (420) is fixedly connected to the lower current-carrying section (120) of the insulating section (100) to support the current-carrying fuse (200) so that it can rotate. The lower support bracket (420) has a flat upper surface that is arranged parallel to the upper portion of the lower current-carrying section (120) and is fixed to the lower current-carrying section (120) using a fixing bolt.

[0087] The upper surface of the lower support bracket (420) has a rotation interference avoidance space formed by recessing a certain depth inward from the edge area, and the rotation interference avoidance space prevents interference with the rotation radius when the rotation operation member (430) rotates with respect to the lower support bracket (420) about the link rotation axis (434).

[0088] On both sides of the lower support bracket (420), a pair of side plates (421) having a certain area are provided, and a rotational operating member (430) is rotatably accommodated in the space between the pair of side plates (421). The end portions of the pair of side plates (421) have a rotational shaft receiving groove (423) for accommodating a link rotational shaft (434) formed in a vertically recessed shape.

[0089] The above-mentioned rotational operating member (430) is rotatably connected to the lower support bracket (420) by a link rotation shaft (434), and is configured to rotatably support the fuse fixing clamp (410).

[0090] The above-mentioned rotation operation member (430) is formed to have a curved portion (431) supported by a pair of elastic members (422) provided on both sides of the inner side of the lower support bracket (420) on both sides.

[0091] This rotational operating member (430) is rotatably connected to the lower support bracket (420) at the lower middle portion by a link rotation shaft (434), and the upper portion is rotatably connected to the shaft coupling leg (413) of the fuse fixing clamp (410) by a clamp rotation shaft (414).

[0092] The lower part of the above-mentioned rotation operation member (430) is formed to have a shape corresponding to the flipper (440) so that the flipper (440) can be accommodated therein.

[0093] The flipper (440) is coupled to the above-mentioned rotational operating member (430) so as to rotate around the clamp rotational axis (414), and an elastic member (445) is installed on the clamp rotational axis (414) to elastically support the flipper (440) and apply elastic force so that the rotated rotational operating member (430) can return to its initial position.

[0094] Since the above link rotation axis (434) is shared by the flipper (440) and the rotation operation member (430), when the link rotation axis (434) is rotated by the flipper (440), the rotation operation member (430) is also rotated with respect to the lower support bracket (420).

[0095] The above flipper (440) is configured to transmit the protrusion of the striker (230) to the rotation of the rotation operating member (430) when a fault current occurs.

[0096] The above flipper (440) rotates around the link rotation axis (434) due to the protrusion of the striker (230) when a fault current occurs, and transmits rotational force to the rotation operation member (430) by the elastic force of the elastic member (445) during rotation.

[0097] The middle part of the above-mentioned flipper (440) has a hook-up bending portion (441) formed by bending upward, and the hook-up bending portion (441) is inserted into the bending insertion portion (471) of the hook-up end portion (470).

[0098] The hooking bending portion (441) of the above flipper (440) is inserted into the bending insertion portion (471) to prevent the flipper (440) from rotating due to a load applied from above when normal.

[0099] The above-mentioned elastic conductive member (450) is positioned between the rotational operating member (430) and the fuse fixing clamp (410) and is used as a conductive member in normal operation. When an accident current occurs, the elastic force pushes out the fuse fixing clamp (410) so that the upper connection end (210) of the current-limiting fuse (200) can be quickly separated and cut off.

[0100] The conductive member (450) having elasticity is installed so as to be in a compressed state between the rotation operation member (430) and the fuse fixing clamp (410) during installation.

[0101] The conductive member (450) having the above-described elasticity has one or more bending portions to have compressive elasticity as shown in FIGS. 5 to 10 showing examples.

[0102] The conductive member (450) having elasticity is usually made of a dissimilar metal plate composed of a conductive material plate (451) for electrical conductivity and an elastic material plate (452) for elasticity.

[0103] The plate (451) for the conductive material is usually made of copper, and the plate (452) for the elastic material is usually made of spring steel.

[0104] Referring to FIGS. 5 and 6 showing the first embodiment,

[0105] The conductive member (450) having elasticity is formed in a 'U' shape with one bending part, and has a fixing part (453) formed of a bolt hole on one side so that it can be fixed to the rotation operation member (430) with a bolt part, and has a conductive contact part (454) on the other side so that it comes into contact with a conductive contact surface (472) formed in a bending insertion part (471) of a fuse fixing clamp (410).

[0106] Referring to FIGS. 7 and 8 showing the second embodiment,

[0107] The conductive member (450) having elasticity is formed in a wave shape to have a plurality of bending portions, and has a fixing portion (453) formed of a bolt hole on one side so that it can be fixed to the rotation operation member (430) with a bolt member, and has a conductive contact portion (454) on the other side so that it comes into contact with a conductive contact surface (472) formed in a bending insertion portion (471) of a fuse fixing clamp (410).

[0108] Referring to FIGS. 9 and 10 showing the third embodiment,

[0109] The conductive member (450) having elasticity is formed in a bent shape to have a curved portion, and has a fixing portion (453) formed of a bolt hole on one side so that it can be fixed to a rotation operation member (430) with a bolt member, and has a conductive contact portion (454) on the other side so that it comes into contact with a conductive contact surface (472) formed in a bending insertion portion (471) of a fuse fixing clamp (410).

[0110] The conductive member (450) having elasticity as described above is fixed on one side to the rotational operation member (430) as shown in FIGS. 6, 8 and 10 and is installed in a compressed state between the rotational operation member (430) and the engaging end (470) of the fuse fixing clamp (410) so as to conduct current between the rotational operation member (430) and the fuse fixing clamp (410) in normal times, and in case of an accident, the engaging end (470) is pushed out by elastic force as shown in FIG. 4 so that the current-limiting fuse (200) is separated for rapid cut-off.

[0111] The inside of the above-mentioned hooking end (470) has a hooking bending part (441) formed by bending the flipper (440) upwards, and has a bending insertion part (471) that prevents the flipper (440) from rotating due to the load of the current-carrying fuse (200) applied from above, and the outside of the hooking end (470) has a flat contact surface (472) for current transmission formed to come into contact with a current-carrying member (450) having elasticity.

[0112]

[0113] As described above, the cut-out switch having a current-carrying member having elastic capability according to the present invention can improve current-carrying performance between a fuse fixing clamp and a rotational operating member by having a separately provided current-carrying member having elastic capability, and further, in the event of an accident, the current-carrying member having elastic capability provided for improving current-carrying performance has the advantage of enabling a rapid rotational operation by pushing the lower part of the current-limiting fuse with elastic force, thereby enabling a rapid cut-off.

Claims

1. Insulating part (100); A current-limiting fuse (200) disposed apart from the above-mentioned insulating part (100), having both ends blocked and having a striker (230) protruding at the bottom when an accident current occurs; A link separation support member (300) that is fixedly connected at one end to the upper end of the insulating member (100) and detachably connected at the other end to the current-limiting fuse (200) so that the current-limiting fuse (200) is separated when the striker (230) protrudes; It includes a link rotation support member (400) that connects the lower part of the insulating part (100) and the lower part of the current-limiting fuse (200), and supports the current-limiting fuse (200) to rotate downward when the striker (230) protrudes. A cut-out switch having a conductive member having elasticity, characterized in that the above link rotation support member (400) includes a conductive member (450) having one or more bending portions to have compressive elasticity so that a rapid cut-off can be achieved by pushing out the lower part of a current-limiting fuse (200) when a striker (230) protrudes due to the occurrence of an accidental current, and to perform a current-conducting role in a normal state.

2. Insulating part (100); A current-limiting fuse (200) disposed apart from the above-mentioned insulating part (100), having both ends blocked and having a striker (230) protruding at the bottom when an accident current occurs; A link separation support member (300) that is fixedly connected at one end to the upper end of the insulating member (100) and detachably connected at the other end to the current-limiting fuse (200) so that the current-limiting fuse (200) is separated when the striker (230) protrudes; A link rotation support member (400) is included that connects the lower part of the insulating part (100) and the lower part of the current-limiting fuse (200), and supports the current-limiting fuse (200) to rotate downward when the striker (230) protrudes. The above link rotation support member (400) comprises: a fuse fixing clamp (410) fixedly coupled to the lower portion of the current-limiting fuse (200); a lower support bracket (420) fixedly coupled to the insulating member (100); a rotation operation member (430) that connects the fuse fixing clamp (410) and the lower support bracket (420) to each other, and has one end rotatably coupled to the fuse fixing clamp (410) about a clamp rotation axis (419) and a middle portion rotatably coupled to the lower support bracket (420) about a link rotation axis (434); A cut-out switch having a current-carrying member having elasticity, characterized in that it includes a flipper (440) which is arranged in contact with the lower end of the current-carrying fuse (200) at one end and is elastically supported by an elastic member (445) installed on the link rotation shaft (434) when the striker (230) protrudes and rotates around the link rotation shaft (434); and a current-carrying member (450) having elasticity, which is fixed at one end to the rotation-operating member (430) and has the other end in contact with the fuse fixing clamp (410), so that in a normal state, the fuse fixing clamp (410) and the rotation-operating member (430) conduct current to each other, and when the striker (230) protrudes due to the occurrence of a fault current, it pushes out the fuse fixing clamp (410) so that a quick cut-off can be achieved.

3. In paragraph 2, The above flipper (440) is formed with a catch bend (441) to prevent it from rotating under normal load. A hook end (470) is formed on the lower side of the above fuse fixing clamp (410) to allow the hooking bending portion (441) to be hooked. A cut-out switch having a conductive member having elasticity, characterized in that one end of the conductive member (450) having the above elasticity is brought into contact with a hooking end (470).

4. In paragraph 2, A cut-out switch having a conductive member having elasticity, characterized in that the conductive member (450) having the above elasticity has at least one bending portion to have compressive elasticity.

5. In paragraph 1 or paragraph 4, A cut-out switch having a conductive member (450) having the above elasticity is characterized by being a dissimilar metal plate composed of a conductive material plate (451) and an elastic material plate (452).

6. In paragraph 5, A cut-out switch having a conductive member, characterized in that the above conductive material plate (451) is made of a copper material and the elastic material plate (452) is made of spring steel.

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