A fuse-type disconnecting switch

Abstract

The present invention provides a fuse-type disconnecting switch, which relates to the technical field of electrical switches and includes: an operating mechanism and a conductive circuit. The conductive circuit includes at least one-phase circuit. Each phase circuit includes a fusing component, a first switching component and a second switching component respectively connected to both ends of the fusing component. The operating mechanism is drivingly connected to the first switching component and the second switching component of each phase circuit, and is used to drive the first switching component and the second switching component of each phase circuit to be in a conducting state or a disconnecting state simultaneously when the operating mechanism is stressed and operates. Since the first switching component and the second switching component are in the same state simultaneously, therefore, when the fuse-type disconnecting switch is in the disconnecting state, obvious breakpoints can be formed at both ends of the fusing component respectively. The multiple breakpoints enable the fuse-type disconnecting switch to have a safer and more reliable isolation function when breaking.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical switches, and more particularly, to a fuse-disconnecting switch. Background Art

[0002] With the rapid development of the economy and the rapid improvement of people's living standards, there is a higher demand for electrical safety. The fuse-disconnecting switch has good breaking capacity, so it can be installed in the distribution line. At the same time, it can also connect, carry and break the current under normal or abnormal circuit conditions, and effectively protect the line and electrical equipment. With the in-depth research on the fuse-disconnecting switch, the technology of opening and closing the fuse-disconnecting switch has gradually matured.

[0003] The existing fuse-disconnecting switch usually forms only one break point in the circuit during opening and closing, especially during opening, resulting in limited breaking capacity of the fuse-disconnecting switch. Summary of the Invention

[0004] The purpose of the present invention is to provide a fuse-disconnecting switch to solve the problem of limited breaking capacity of the existing fuse-disconnecting switch in view of the above-mentioned deficiencies in the prior art.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present invention is as follows:

[0006] On the one hand, an embodiment of the present invention provides a fuse-disconnecting switch, including: an operating mechanism and a conductive circuit. The conductive circuit includes at least one phase of circuit. Each phase of circuit includes a fuse component, a first switching component and a second switching component respectively connected to both ends of the fuse component. The operating mechanism is drivingly connected to the first switching component and the second switching component of each phase of circuit, and is used to drive the first switching component and the second switching component of each phase of circuit to be in a conducting state or a disconnecting state simultaneously when the operating mechanism is stressed.

[0007] Optionally, the conductive circuit further includes at least one phase of wiring mechanism connected to each phase of circuit in one-to-one correspondence. Each phase of wiring mechanism includes an incoming line mechanism connected to the first switching component and an outgoing line mechanism connected to the second switching component.

[0008] Optionally, the first switching component includes a first moving contact and a first stationary contact connected to one end of the fuse component. The second switching component includes a second moving contact and a second stationary contact connected to the other end of the fuse component. The first moving contact and the second moving contact are respectively connected to the operating mechanism. The first switching component further includes an incoming line moving contact connected to the first moving contact and an incoming line stationary contact connected to the incoming line mechanism. The second switching component further includes an outgoing line moving contact connected to the second moving contact and an outgoing line stationary contact connected to the outgoing line mechanism.

[0009] Optionally, when the conductive circuit includes a three-phase wiring mechanism, the wiring terminals of the outgoing wire mechanism in the three-phase wiring mechanism are arranged in a stepped manner on the same side of the fuse-type disconnector.

[0010] Optionally, the three-phase wiring mechanism includes a three-phase outgoing line mechanism, the three-phase outgoing line mechanism includes a first phase outgoing line conductive plate, a second phase outgoing line conductive plate and a third phase outgoing line conductive plate, the first phase outgoing line conductive plate and the second phase outgoing line conductive plate are respectively located on both sides of the third phase outgoing line conductive plate, and the plate surfaces of the first phase outgoing line conductive plate and the second phase outgoing line conductive plate are opposite to each other.

[0011] Optionally, the first opening and closing component and the second opening and closing component are connected in a linkage manner.

[0012] Optionally, the operating mechanism and at least one phase circuit in the conductive loop are arranged in the same row.

[0013] Optionally, the fuse assembly includes a fuse body and a first blade and a second blade respectively connected to two ends of the fuse body; the first blade is connected to the first opening and closing assembly, and the second blade is connected to the second opening and closing assembly.

[0014] Optionally, the fusible disconnector also includes a busbar housing and a first contact sub-housing and a second contact sub-housing that are arranged opposite to each other; a first groove is arranged on the first contact sub-housing, and a second groove opposite to the opening of the first groove is arranged on the second contact sub-housing; a first plug-in portion and a second plug-in portion are arranged on the busbar housing, and the first plug-in portion and the second plug-in portion are respectively plugged into the first groove and the second groove to enclose the first contact sub-housing and the second contact sub-housing to form a contact housing, the first opening and closing assembly and the second opening and closing assembly are arranged in the contact housing, and the wiring mechanism is arranged in the busbar housing.

[0015] Optionally, the fusible disconnect switch also includes a locking piece and a fuse shell for accommodating the fuse assembly, a third groove is provided on the first contact sub-shell, and a fourth groove is provided on the second contact sub-shell, the fuse shell includes a first fuse sub-shell and a second fuse sub-shell that are relatively arranged, the first fuse sub-shell is connected to the second fuse sub-shell through the locking piece, and the first fuse sub-shell and the second fuse sub-shell are respectively plugged into the third groove and the fourth groove to connect the fuse shell and the contact shell.

[0016] Optionally, the operating mechanism includes a linkage assembly, a driving member and an elastic member connected to the linkage assembly, the driving member is drivingly connected to the first opening and closing assembly and the second opening and closing assembly, the driving member is provided with a guide groove, and the linkage member is used to move from the first working position to the second working position in the guide groove when subjected to force to drive the elastic member to store energy; the elastic member is used to drive the linkage assembly to move from the second working position to the third working position in the guide groove when releasing energy to drive the driving member to make the first opening and closing assembly and the second opening and closing assembly of each phase circuit be in the on state or the off state at the same time.

[0017] Optionally, the linkage assembly includes a first linkage and a second linkage. The elastic member is sleeved on the second linkage. The second linkage is provided with a chute. One end of the first linkage close to the second linkage is located in the guiding groove and is slidably arranged in the chute, and is used for when the first linkage is stressed, one end of the first linkage moves along a first direction in the chute to drive the elastic member to store energy; when the elastic member releases energy, it drives one end of the first linkage to move along a second direction in the chute to drive the driving member; the first direction is opposite to the second direction.

[0018] Optionally, the operating mechanism further includes a handle. The handle includes a body and a driving groove arranged in the body. The body is connected to one end of the first linkage away from the elastic member. One end of the first linkage close to the handle is provided with a protrusion, and the protrusion extends into the driving groove; when the handle is rotated, the groove wall of the driving groove acts on the protrusion, so that one end of the first linkage close to the guiding groove moves in the guiding groove to drive the first linkage to move from the first working position to the second working position.

[0019] The beneficial effects of the present invention include:

[0020] The present invention provides a fusing disconnecting switch, including: an operating mechanism and a conductive circuit. The conductive circuit includes at least one phase of circuit. Each phase of circuit includes a fusing component, a first switching and closing component and a second switching and closing component respectively connected to both ends of the fusing component. The operating mechanism is drivingly connected to the first switching and closing component and the second switching and closing component of each phase of circuit, and is used for when the operating mechanism is stressed, driving the first switching and closing component and the second switching and closing component of each phase of circuit to be in a conducting state or a disconnecting state simultaneously. Since the first switching and closing component and the second switching and closing component are in the same state simultaneously, therefore, when the fusing disconnecting switch is in the disconnecting state, obvious breakpoints can be formed at both ends of the fusing component respectively, thereby improving the breaking capacity of the fusing disconnecting switch, enabling it to not only carry and break low-current circuits, but also cooperate with the fusing component to reliably carry and break high-current circuits. The multiple breakpoints enable the fusing disconnecting switch to have a safer and more reliable isolation function when breaking. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of a fusing disconnecting switch in a switched-off state provided by an embodiment of the present invention;

[0023] Figure 2 Structural schematic diagram of a fuse disconnecting switch in the closed state provided by an embodiment of the present invention;

[0024] Figure 3 One of the structural schematic diagrams of a fuse disconnecting switch provided by an embodiment of the present invention;

[0025] Figure 4 Another structural schematic diagram of a fuse disconnecting switch provided by an embodiment of the present invention;

[0026] Figure 5 Still another structural schematic diagram of a fuse disconnecting switch provided by an embodiment of the present invention;

[0027] Figure 6 Yet another structural schematic diagram of a fuse disconnecting switch provided by an embodiment of the present invention;

[0028] Figure 7 It is Figure 6 A partial enlarged view of area A in

[0029] Figure 8 One of the structural schematic diagrams of the operating mechanism of a fuse disconnecting switch provided by an embodiment of the present invention;

[0030] Figure 9 Another structural schematic diagram of the operating mechanism of a fuse disconnecting switch provided by an embodiment of the present invention;

[0031] Figure 10 Still another structural schematic diagram of the operating mechanism of a fuse disconnecting switch provided by an embodiment of the present invention.

[0032] Icons: 01 - Operating mechanism; 02 - Conductive circuit; 110 - First linkage; 111 - Protrusion; 120 - Second linkage; 121 - Slide groove; 130 - Elastic member; 140 - Driving member; 141 - Guide groove; 142 - First working position; 143 - Second working position; 144 - Third working position; 150 - Handle; 151 - Driving groove; 152 - First moving position; 153 - Second moving position; 154 - Third moving position; 200 - Fuse component; 210 - Fuse body; 230 - First plug knife; 220 - Second plug knife; 300 - First switching component; 310 - First static contact; 320 - First moving contact; 340 - Incoming line static contact; 330 - Incoming line moving contact; 400 - Second switching component; 410 - Second static contact; 420 - Second moving contact; 440 - Outgoing line static contact; 430 - Outgoing line moving contact; 510 - First-phase incoming line conductive plate; 520 - First-phase outgoing line conductive plate; 521 - Terminal of the first-phase outgoing line conductive plate; 530 - Second-phase incoming line conductive plate; 540 - Second-phase outgoing line conductive plate; 541 - Terminal of the second-phase outgoing line conductive plate; 550 - Third-phase incoming line conductive plate; 560 - Third-phase outgoing line conductive plate; 561 - Terminal of the third-phase outgoing line conductive plate; 600 - Connecting rod; 710 - Contact housing; 711 - First contact sub-housing; 712 - Second contact sub-housing; 713 - First groove; 714 - Second groove; 715 - Third groove; 716 - Fourth groove; 720 - Bus housing; 721 - First plugging portion; 722 - Second plugging portion; 731 - First fuse sub-housing; 732 - Second fuse sub-housing. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. It should be noted that, without conflict, the various features in the embodiments of the present invention can be combined with each other, and the combined embodiments are still within the protection scope of the present invention.

[0035] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0037] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0038] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] On the one hand, an embodiment of the present invention provides a fuse-type disconnecting switch, including: an operating mechanism 01 and a conductive circuit 02. The conductive circuit 02 includes at least one phase circuit. Each phase circuit includes a fusing component 200, a first switching component 300 and a second switching component 400 respectively connected to both ends of the fusing component 200. The operating mechanism 01 is drivingly connected to the first switching component 300 and the second switching component 400 of each phase circuit, and is used to drive the first switching component 300 and the second switching component 400 of each phase circuit to be in a conducting state or a disconnecting state simultaneously when the operating mechanism 01 is stressed.

[0040] For example, Figure 1As shown in the figure, the fuse disconnecting switch may include an operating mechanism 01 and a conductive circuit 02. The conductive circuit 02 may be provided with at least one-phase circuit according to actual requirements, such as a single-phase circuit, a three-phase circuit, a four-phase circuit, and so on. Among them, each phase circuit may include a fuse component 200, a first switching component 300, and a second switching component 400. The first switching component 300 and the second switching component 400 may be respectively connected to both ends of the fuse component 200. When both the first switching component 300 and the second switching component 400 are in the conducting state, a conducting circuit from the first switching component 300 through the fuse component 200 to the second switching component 400 may be formed. In order to achieve the conduction or disconnection of the fuse disconnecting switch, the first switching component 300 and the second switching component 400 in each phase circuit may be respectively drivingly connected to the operating mechanism 01, that is, the operating mechanism 01 can drive the first switching component 300 and the second switching component 400 in each phase circuit to move so that they are simultaneously in the conducting state or the disconnecting state, so that the fuse disconnecting switch remains in the conducting or disconnecting state. Since the first switching component 300 and the second switching component 400 are in the same state at the same time, when the fuse disconnecting switch is in the disconnecting state, obvious break points may be respectively formed at both ends of the fuse component 200, thereby improving the breaking capacity of the fuse disconnecting switch, enabling it not only to carry and break low-voltage circuits, but also to cooperate with the fuse component 200 to reliably carry and break high-voltage circuits. The multiple break points enable the fuse disconnecting switch to have a safer and more reliable isolation function when breaking.

[0041] For the convenience of understanding, the following will be described by taking a three-phase circuit as an example schematically:

[0042] As Figure 1 shown in the figure, when the conductive circuit 02 includes a three-phase circuit, each phase circuit in the three-phase circuit includes a fuse component 200, a first switching component 300, and a second switching component 400, that is, the three-phase circuit correspondingly has three sets of fuse components 200, first switching components 300, and second switching components 400 that are not electrically connected to each other. The first switching component 300 and the second switching component 400 (for the convenience of description, the first switching component 300 and the second switching component 400 in each phase circuit will be referred to as a switching mechanism hereinafter) in each phase circuit are respectively connected to the operating mechanism 01. For example: the first switching component 300 and the second switching component 400 in each phase circuit may be respectively and individually connected to the operating mechanism 01, or the two may be connected first and then connected to the operating mechanism 01 (such as Figure 1 shown in the figure); the three switching mechanisms in the three-phase circuit may be respectively and individually connected to the operating mechanism 01, or the three may be connected first and then connected to the operating mechanism 01 (such as Figure 2 shown in the figure). CombiningFigure 1 and Figure 2 As shown, when the fuse disconnecting switch needs to be closed, the operating mechanism 01 drives the three closing and opening mechanisms connected thereto to move, so that the three closing and opening mechanisms are simultaneously in a conducting state. At this time, the first closing and opening component 300 and the second closing and opening component 400 in each closing and opening mechanism are both in a conducting state (as Figure 2 shown). When the fuse disconnecting switch needs to be opened, the operating mechanism 01 drives the three closing and opening mechanisms connected thereto to move, so that the three closing and opening mechanisms are simultaneously in an open state (as Figure 1 shown). At this time, the first closing and opening component 300 and the second closing and opening component 400 in each closing and opening mechanism are both in an open state. Twelve break points are correspondingly formed in the entire fuse disconnecting switch (4 break points in each phase circuit).

[0043] When the conductive circuit 02 includes more than two-phase circuits, at least an electrical isolation member can be provided between adjacent two circuits, or a housing can also be provided, as Figure 6 shown. More than two independent accommodating cavities are correspondingly provided in the housing, and each accommodating cavity can accommodate one-phase circuit. In addition, each accommodating cavity can be further divided into two independent sub-cavities, one of the sub-cavities is used to accommodate the fuse component 200, and the other sub-cavity is used to accommodate the first closing and opening component 300 and the second closing and opening component 400.

[0044] Optionally, the conductive circuit 02 further includes at least one-phase wiring mechanism connected to at least one-phase circuit in one-to-one correspondence. Each phase wiring mechanism includes an incoming line mechanism connected to the first closing and opening component 300 and an outgoing line mechanism connected to the second closing and opening component 400.

[0045] Exemplarily, in combination with Figure 1 and Figure 2 shown, the conductive circuit 02 can further include a wiring mechanism to facilitate the fuse disconnecting switch to be correspondingly connected to the load circuit. The number of wiring mechanisms can be reasonably set according to the number of phase circuits. For example, one wiring mechanism can be provided for each phase circuit, and each wiring mechanism can include an incoming line mechanism and an outgoing line mechanism. Among them, the incoming line mechanism is connected to the first closing and opening component 300, and the outgoing line mechanism is connected to the second closing and opening component 400. In this way, a conductive channel from the incoming line mechanism, the first closing and opening component 300, the fuse component 200, the second closing and opening component 400 to the outgoing line mechanism can be formed for each phase circuit. The setting of the incoming line mechanism and the outgoing line mechanism enables the fuse disconnecting switch to be conveniently and quickly connected to the load circuit, improving the convenience of installation and use of the fuse disconnecting switch.

[0046] The incoming line mechanism may include an incoming busbar (which may be the incoming conductive plate in the following embodiments) and a wiring board. One end of the incoming busbar is connected to the first switching component 300, and the other end is connected to the wiring board. The outgoing line mechanism may include a carrying busbar (which may be the outgoing conductive plate in the following embodiments) and a wiring terminal. One end of the carrying busbar is connected to the second switching component 400, and the other end is connected to the wiring terminal. When a housing is provided for the fuse disconnecting switch, in order to form good electrical isolation for the circuit and at the same time make the fuse disconnecting switch convenient for wiring, the wiring board and the wiring terminal may also be arranged outside the housing, that is, isolate the two from the internal components and connect them through the above-mentioned incoming busbar and carrying busbar in the middle.

[0047] Optionally, the first switching component 300 includes a first moving contact 320 and a first static contact 310 connected to one end of the fuse component 200, and the second switching component 400 includes a second moving contact 420 and a second static contact 410 connected to the other end of the fuse component 200; the first moving contact 320 and the second moving contact 420 are respectively connected to the operating mechanism 01; when the conductive circuit 02 further includes a wiring mechanism, the first switching component 300 further includes an incoming line moving contact 330 connected to the first moving contact 320 and an incoming line static contact 340 connected to the incoming line mechanism, and the second switching component 400 further includes an outgoing line moving contact 430 connected to the second moving contact 420 and an outgoing line static contact 440 connected to the outgoing line mechanism.

[0048] Exemplarily, as Figure 3 shown, one of the embodiments is: the first switching component 300 includes a first moving contact 320 and a first static contact 310, the second switching component 400 includes a second moving contact 420 and a second static contact 410, the first static contact 310 and the second static contact 410 are respectively connected to both ends of the fuse component 200, the first moving contact 320 corresponds to the first static contact 310, and the second moving contact 420 corresponds to the second static contact 410. Here, the correspondence means that the first moving contact 320 can be turned on or off with the first static contact 310 under the drive of the operating mechanism 01 (similarly for the second moving contact 420), and the first moving contact 320 and the second moving contact 420 are respectively connected to the operating mechanism 01. In this way, by driving the movement of the first moving contact 320 and the second moving contact 420 by the operating mechanism 01, the first moving contact 320 and the second moving contact 420 can respectively form break points in the off state, thereby effectively improving the breaking capacity of the fuse disconnecting switch.

[0049] In another embodiment, based on the above embodiments, the first switching component 300 may further include an incoming line moving contact 330 and an incoming line static contact 340, and the second switching component 400 may further include an outgoing line moving contact 430 and an outgoing line static contact 440. Among them, the incoming line static contact 340 can be connected to the incoming line mechanism, and the outgoing line static contact 440 is connected to the outgoing line mechanism. At the same time, the incoming line moving contact 330 corresponds to the incoming line static contact 340, and the outgoing line moving contact 430 corresponds to the outgoing line static contact 440. Here, the correspondence means that the incoming line moving contact 330 can be driven by the operating mechanism 01 to achieve conduction or disconnection with the incoming line static contact 340 (similarly for the outgoing line moving contact 430). The incoming line moving contact 330 and the outgoing line moving contact 430 are respectively connected to the operating mechanism 01. At the same time, the incoming line moving contact 330 is connected to the first moving contact 320, and the outgoing line moving contact 430 is connected to the second moving contact 420, forming a conductive circuit 02 from the incoming line mechanism, the incoming line static contact 340, the incoming line moving contact 330, the first moving contact 320, the first static contact 310, the fusing component 200, the second static contact 410, the second moving contact 420, the outgoing line moving contact 430, the outgoing line static contact 440 to the outgoing line mechanism. In this way, by driving the first moving contact 320, the second moving contact 420, the incoming line moving contact 330, and the outgoing line moving contact 430 to move respectively by the operating mechanism 01, it is possible to make the first moving contact 320, the second moving contact 420, the incoming line moving contact 330, and the outgoing line moving contact 430 form break points respectively in the off state, that is, a phase circuit contains four break points, further improving the breaking capacity of the fuse disconnecting switch.

[0050] Optionally, when the conductive circuit 02 includes a three-phase wiring mechanism, the connection terminals of the outgoing line mechanisms in the three-phase wiring mechanism are arranged in a stepped shape on the same side of the fuse disconnecting switch.

[0051] Exemplarily, in combination with Figures 1 to 3 As shown, the conductive circuit 02 may include a three-phase wiring mechanism, and correspondingly, there are also three-phase circuits at the same time. The connection terminals of the three outgoing line mechanisms in the three-phase wiring mechanism can be arranged on the same side of the fuse disconnecting switch, for example, on the side away from the operating mechanism 01, and the three connection terminals can be arranged in a stepped shape in sequence. In this way, not only can the convenience during wiring be effectively improved, but also the isolation effect of the multi-phase circuit at the connection terminal can be further improved, and the stability of the fuse disconnecting switch can be enhanced.

[0052] Optionally, the three-phase wiring mechanism includes a three-phase outgoing line mechanism. The three-phase outgoing line mechanism includes a first-phase outgoing line conductive plate 520 connected to the second switching-on and -off assembly 400 of the first phase, a second-phase outgoing line conductive plate 540 connected to the second switching-on and -off assembly 400 of the second phase, and a third-phase outgoing line conductive plate 560 connected to the second switching-on and -off assembly 400 of the third phase. The first-phase outgoing line conductive plate 520 and the second-phase outgoing line conductive plate 540 are respectively located on both sides of the third-phase outgoing line conductive plate 560, and the plate surfaces of the first-phase outgoing line conductive plate 520 and the second-phase outgoing line conductive plate 540 are opposite to each other. The three-phase incoming line mechanism includes a first-phase incoming line conductive plate 510 connected to the first switching-on and -off assembly 300 of the first phase, a second-phase incoming line conductive plate 530 connected to the first switching-on and -off assembly 300 of the second phase, and a third-phase incoming line conductive plate 550 connected to the first switching-on and -off assembly 300 of the third phase.

[0053] Exemplarily, as Figure 3 shown, the third-phase outgoing line conductive plate 560 in the middle adopts a flat layout form, and the first-phase outgoing line conductive plate 520 and the second-phase outgoing line conductive plate 540 located on both sides of the third-phase outgoing line conductive plate 560 adopt a side-standing layout form, that is, the plate surfaces of the first-phase outgoing line conductive plate 520 and the second-phase outgoing line conductive plate 540 located on both sides of the third-phase outgoing line conductive plate 560 are opposite to each other. In this way, the thickness of the fuse disconnecting switch can be further reduced, thereby reducing its overall volume.

[0054] In addition, as Figure 4 shown, the connection terminal 521 of the first-phase outgoing line conductive plate and the connection terminal 541 of the second-phase outgoing line conductive plate are bent towards the connection terminal 561 of the third-phase outgoing line conductive plate, so that the connection terminal 521 of the first-phase outgoing line conductive plate, the connection terminal 541 of the second-phase outgoing line conductive plate, and the connection terminal 561 of the third-phase outgoing line conductive plate are located in the same plane. As Figure 4 shown, from the top view perspective, it can be seen that the three are located on the same straight line, thereby further reducing the thickness of the fuse disconnecting switch.

[0055] Optionally, the first switching-on and -off assembly 300 and the second switching-on and -off assembly 400 are connected in a linkage manner.

[0056] Exemplarily, the first switching-on and -off assembly 300 and the second switching-on and -off assembly 400 can be connected to achieve linkage. For example, a connecting member (the connecting rod 600 in Figure 1 ) is provided. The first moving contact 320 in the first switching-on and -off assembly 300 and the second moving contact 420 in the second switching-on and -off assembly 400 are arranged on the connecting rod 600, and then the connecting rod 600 is connected to the operating mechanism 01 (it can be a detachable manner). The operating mechanism 01 drives the connecting rod 600 to simultaneously drive the first moving contact 320 and the second moving contact 420 to move, so that the two can be in a conducting or disconnecting state at the same time.

[0057] In addition, based on the above embodiments, the incoming line moving contact 330 and the outgoing line moving contact 430 can also be respectively arranged on the connecting member, and the electrical connection between the incoming line moving contact 330 and the first moving contact 320, and the electrical connection between the outgoing line moving contact 430 and the second moving contact 420 are maintained. In this way, the operating mechanism 01 can drive the connecting member to simultaneously drive the first moving contact 320, the second moving contact 420, the incoming line moving contact 330, and the outgoing line moving contact 430 to be in a conducting or disconnected state. The connecting member can be made of an insulating material to avoid interference between multi-phase circuits. In addition, the first switching and closing assemblies 300 and the second switching and closing assemblies 400 in adjacent phase circuits can be connected and arranged on the connecting member at the same time, so that the operating mechanism 01 can control the conduction and disconnection of multi-phase circuits only by acting on the connecting member.

[0058] For example Figure 1 As shown, there are three-phase circuits, and each phase includes a first moving contact 320 and a first static contact 310, a second moving contact 420 and a second static contact 410, an incoming line moving contact 330 and an incoming line static contact 340, and an outgoing line moving contact 430 and an outgoing line static contact 440. The first moving contact 320, the second moving contact 420, the incoming line moving contact 330, and the outgoing line moving contact 430 in each phase can be arranged on the connecting rod 600. According to the conduction direction, the incoming line moving contact 330 and the first moving contact 320 can be respectively arranged on both sides of the connecting rod 600, and the second moving contact 420 and the outgoing line moving contact 430 can also be arranged on both sides of the connecting rod 600, and the positions where the moving contacts are arranged in the above two places can be respectively located on both sides of the fuse link 210. Since the operating mechanism 01 drives the movement of each moving contact through the connecting rod 600 uniformly, the movement displacements of each moving contact are the same, that is, they are linked. In this way, it is ensured that when the operating mechanism 01 is operated to achieve switching and closing, the conduction or disconnection states in each phase circuit can be reliably ensured to be the same. When closing is required, under the action of an external force, the operating mechanism 01 performs a closing movement, and then drives the connecting rod 600 to move linearly in the third direction (such as Figure 1 in, from right to left), so that each moving contact in each phase circuit arranged on the connecting rod 600 moves towards the direction close to its corresponding static contact. When the connecting rod 600 moves in place, each moving contact contacts its corresponding static contact in place, realizing reliable closing. When opening is required, under the action of an external force, the operating mechanism 01 performs an opening movement, and then drives the connecting rod 600 to move linearly in the fourth direction (such as Figure 2 shown, from left to right), so that each moving contact in each phase circuit arranged on the connecting rod 600 moves towards the direction away from its corresponding static contact. When the connecting rod 600 moves in place, each moving contact separates from its corresponding static contact in place, realizing reliable opening. Among them, the third direction and the fourth direction are opposite.

[0059] Optionally, at least one phase circuit of the operating mechanism 01 and the conductive circuit 02 is arranged in the same row.

[0060] Exemplarily, in combination with Figures 1 to 6 As shown, the operating mechanism 01 can be arranged in the same row or side by side with the conductive circuit 02. For example, when the conductive circuit 02 includes two-phase circuits, the operating mechanism 01 and the two-phase circuits are arranged in the same row, and the two-phase circuits are also arranged in the same row; when the conductive circuit 02 includes three-phase circuits, the operating mechanism 01 and each phase circuit are arranged in the same row to form a strip-type fuse-disconnecting switch. For example, the operating mechanism 01 is located at the leftmost side, and the three-phase circuits are all arranged in the same row on its right side. This form has the characteristics of compact and reasonable structural layout and high integration, which is convenient for users to use.

[0061] Optionally, the fuse assembly 200 includes a fuse link 210, a first plug 230 and a second plug 220 respectively connected to both ends of the fuse link 210; the first plug 230 is connected to the first switching component 300, and the second plug 220 is connected to the second switching component 400.

[0062] Exemplarily, as Figure 1 shown, in order to realize the stable setting of the switching mechanism and facilitate the replacement of the fuse link 210 at the same time, the connection form between the fuse link 210 and the switching mechanism can be connected by plugs. For example, a first plug 230 and a second plug 220 are respectively arranged at both ends of the fuse link 210. Among them, the first switching component 300 is connected to the first plug 230, and the second switching component 400 is connected to the second plug 220. The connection form between both ends of the fuse link 210 and the first plug 230 and the second plug 220 can be a detachable form, such as a plug-in type, that is, the first plug 230 and the second plug 220 each have a slot, and both ends of the fuse link 210 are stably connected to it in the form of inserting into the slot.

[0063] Optionally, the fuse-disconnecting switch further includes a bus housing 720, and a first contact housing 711 and a second contact housing 712 arranged oppositely; a first groove 713 is arranged on the first contact housing 711, a second groove 714 with an opening opposite to that of the first groove 713 is arranged on the second contact housing 712, a first plug-in portion 721 and a second plug-in portion 722 are arranged on the bus housing 720, and the first plug-in portion 721 and the second plug-in portion 722 are respectively plugged into the first groove 713 and the second groove 714 so that the first contact housing 711 and the second contact housing 712 enclose to form a contact housing 710, the first switching component 300 and the second switching component 400 are arranged in the contact housing 710, and the wiring mechanism is arranged in the bus housing 720.

[0064] Exemplarily, as Figure 5As shown, the first contact sub-housing 711 and the second contact sub-housing 712 are arranged opposite to each other and spliced. By inserting the first insertion part 721 and the second insertion part 722 on the busbar housing 720 into the first groove 713 and the second groove 714 respectively, a force that makes the two approach each other is formed on the first contact sub-housing 711 and the second contact sub-housing 712 respectively, so that the integrity of the contact housing 710 formed by enclosing the first contact sub-housing 711 and the second contact sub-housing 712 can be further strengthened. At the same time, the connection between the contact housing 710 and the busbar housing 720 is also completed, and the insertion form makes the connection between the two more convenient.

[0065] The first groove 713 and the second groove 714 can form a dovetail groove, so as to further improve the connection strength. At the same time, some wiring terminals can also be accommodated through the dovetail groove, improving the compactness of the structure.

[0066] Optionally, the fuse-disconnect switch further includes a locking member and a fuse housing for accommodating the fuse assembly 200. A third groove 715 is provided on the first contact sub-housing 711, and a fourth groove 716 is provided on the second contact sub-housing 712. The fuse housing includes a first fuse sub-housing 731 and a second fuse sub-housing 732 arranged opposite to each other. The first fuse sub-housing 731 is connected to the second fuse sub-housing 732 through the locking member. The first fuse sub-housing 731 and the second fuse sub-housing 732 are respectively inserted into the third groove 715 and the fourth groove 716 to connect the fuse housing and the contact housing 710.

[0067] Exemplarily, such as Figure 6 and Figure 7 As shown, the third groove 715 can include two types of sub-grooves with intersecting extension directions. Figure 7 Among them, the extension directions of the two types of sub-grooves are perpendicularly intersecting. Correspondingly, insertion parts corresponding to the above two types of grooves can be provided on the first fuse sub-housing 731 and / or the second fuse sub-housing 732. By correspondingly inserting the insertion parts into the two types of grooves (forming limits in two directions, the connection is more stable), the preliminary fixation is completed. The fourth groove 716 can be set with reference to the third groove 715. At this time, the locking member such as a screw, a bolt, etc. is used to lock and connect the first fuse sub-housing 731 and the second fuse sub-housing 732, so that the stable connection between the fuse housing and the contact housing 710 can be realized. At the same time, the contact housing 710 can be further strengthened through the fuse housing. In order to improve the rationality of the layout, the busbar housing 720 can be arranged on one side of the contact housing 710, and the fuse housing can be arranged on the other side of the contact housing 710. Using the above-mentioned housing connection method is convenient for processing and forming, and the qualified rate is high.

[0068] Optionally, the operating mechanism 01 includes a linkage assembly, a driving member 140, and an elastic member 130 connected to the linkage assembly. The driving member 140 is drivingly connected to the first switching-on and switching-off assembly 300 and the second switching-on and switching-off assembly 400. The driving member 140 is provided with a guiding groove 141. The linkage member is configured to move from a first working position 142 to a second working position 143 in the guiding groove 141 when a force is applied thereto to drive the elastic member 130 to store energy. The elastic member 130 is configured to drive the linkage assembly to move from the second working position 143 to a third working position 144 in the guiding groove 141 when the energy is released, so as to drive the driving member 140 to make the first switching-on and switching-off assembly 300 and the second switching-on and switching-off assembly 400 of each phase circuit be in a conducting state or a disconnected state simultaneously.

[0069] Exemplarily, in combination with Figure 8 、 Figure 9 and Figure 10 as shown, when the initial position of the operating mechanism 01 is the closing position, the first working position 142 refers to the working position where the part of the linkage member in the guiding groove 141 is located in the guiding groove 141 in the initial state (at this time, the elastic member 130 is not affected by the force of the linkage member, and the moving contact acts on the static contact, and the fuse disconnecting switch is closed). The second working position 143 refers to the working position where the elastic member 130 is compressed and the energy storage is completed. The third working position 144 refers to the working position where the part of the linkage member in the guiding groove 141 is located in the guiding groove 141 when the moving contact separates from the static contact and the fuse disconnecting switch is in the opening position.

[0070] It should be noted that when the fuse disconnecting switch moves from the closing position to the opening position, it can have three working positions. Correspondingly, when the fuse disconnecting switch moves from the opening position to the closing position, it can also be realized through the above three working positions. Correspondingly, the first working position 142 in the process from the closing position to the opening position can be used as the third working position 144 in the process from the opening position to the closing position, and the third working position 144 in the process from the closing position to the opening position can be used as the first working position 142 in the process from the opening position to the closing position. That is to say, when in the first working position 142 and the third working position 144, they are only relative positions. It should not be regarded as a limitation on the first working position 142 and the third working position 144. For the convenience of description and understanding, the following will take the initial position of the operating mechanism 01 as the closing position as an example for corresponding illustration.

[0071] 0071 When it is necessary to open the fuse disconnecting switch, the part of the linkage member located in the guiding groove 141 moves forward in the guiding groove 141, and the acting member moves from the first working position 142 towards the second working position 143. At this time, the elastic member 130 will be compressed and store energy; when the acting member moves to the second working position 143, the elastic member 130 has completed energy storage; the elastic member 130 releases energy, and the linkage member can move from the second working position 143 towards the third working position 144. At this time, the linkage member is accelerated under the driving action of the elastic member 130, and then the part of the linkage member in the guiding groove 141 can accelerate to push the driving member 140 to move forward, so that the driving member 140 moves quickly to make the first switching component 300 and the second switching component 400 in each phase circuit in the off state simultaneously.

[0072] 0072 Similarly, when it is necessary to close the fuse disconnecting switch, the linkage member is driven to make the part of the linkage member in the guiding groove 141 move in the reverse direction. The linkage member moves from the first working position 142 (the third working position 144 during the opening process) towards the second working position 143. At this time, the elastic member 130 will be compressed and store energy; when the linkage member moves to the second working position 143, the elastic member 130 has completed energy storage; the elastic member 130 releases energy, and the linkage member can move from the second working position 143 towards the third working position 144 (the first working position 142 during the opening process). At this time, the linkage member is accelerated under the driving action of the elastic member 130, and then the accelerating action pushes the driving member 140 to move in the reverse direction, so that the driving member 140 moves quickly to push the moving contact towards the static contact to achieve closing. In this way, the operating mechanism 01 can first store energy through the elastic member 130, and then release the stored energy of the elastic member 130 to achieve the opening or closing of the moving contact and the static contact.

[0073] 0073 In the opening and closing movements of the above fuse disconnecting switch, both include the energy storage stage and the energy release stage of the elastic member 130. The energy storage of the elastic member 130 can be completed by applying an external force to the linkage member or the handle 150 connected to the linkage member in the subsequent embodiments. By using the energy release of the elastic member 130, it can drive the driving member 140 to move at a high speed, and then it is reflected in driving the first switching component 300 and the second switching component 400 in each phase circuit to quickly complete the state switching of opening and closing through the high-speed movement of the driving member 140, so as to improve the opening and closing ability of the fuse disconnecting switch and avoid the problem that the opening and closing performance of the fuse disconnecting switch is not ideal due to the slow speed of manual force application.

[0074] 0074 During the process of the linkage member driving the elastic member 130 to store energy, that is, during the process in which the portion of the linkage member located in the guiding groove 141 moves from the first working position 142 to the second working position 143, this stage can generally be achieved by applying an external force to the linkage member. In order to prevent the portion of the linkage member located in the guiding groove 141 from driving the driving member 140 to move during this process, it can also be made that when the portion of the linkage member located in the guiding groove 141 moves from the first working position 142 to the second working position 143, it only moves within the hollow area inside the guiding groove 141. In this way, it can be avoided that the portion of the linkage member located in the guiding groove 141 drives the entire driving member 140 to move due to contact with the groove wall of the guiding groove 141, which affects the opening and closing of the subsequent fuse disconnecting switch.

[0075] 0075 Optionally, the linkage assembly includes a first linkage member 110 and a second linkage member 120. The elastic member 130 is sleeved on the second linkage member 120. The second linkage member 120 is provided with a sliding groove 121. One end of the first linkage member 110 close to the second linkage member 120 is located in the guiding groove 141 and is slidably arranged in the sliding groove 121, and is used to drive the elastic member 130 to store energy when the first linkage member 110 is stressed, that is, one end of the first linkage member 110 moves along the first direction in the sliding groove 121; when the elastic member 130 releases energy, it drives one end of the first linkage member 110 to move along the second direction in the sliding groove 121 to drive the driving member 140; the first direction is opposite to the second direction.

[0076] 0076 Exemplarily, the sliding groove 121 provided on the second linkage member 120 is for the portion of the first linkage member 110 located in the sliding groove 121 of the second linkage member 120 (hereinafter referred to as the acting member) to slide therein. In this embodiment, the first linkage member 110 is the driving member, and the second linkage member 120 is the driven member, that is, the movement of the second linkage member 120 is driven by the first linkage member 110. In this way, when the acting member slides in the guiding groove 141, the acting member can also slide in the sliding groove 121 of the second linkage member 120. The elastic member 130 is sleeved on the second linkage member 120 and is used to drive the elastic member 130 to be compressed and store energy under the action of the acting member. As Figure 8 and Figure 9 shown, when the acting member moves from the first working position 142 to the second working position 143, the acting member moves downward (the first direction) in the sliding groove 121, thereby completing the compression of the elastic member 130. As Figure 9 and Figure 10 shown, when the acting member moves from the second working position 143 to the third working position 144, under the action of the elastic member 130, the acting member moves upward (the second direction) in the sliding groove 121.

[0077] Optionally, in this embodiment, the guiding groove 141 may be a trapezoidal groove. When the operating mechanism 01 is in the second working position 143, the acting member abuts against one of the inclined walls of the trapezoidal groove (corresponding to Figure 9 in the figure, it is the right side wall of the trapezoidal groove). In this way, when the elastic member 130 finishes energy storage under pressure, the acting member just abuts against the inclined wall of the trapezoidal groove. In this way, when the elastic member 130 releases the stored energy, under the action of the elastic member 130, the stroke of the acting member pushing the driving member 140 to move can be increased, so that the driving member 140 drives the first switching-on and switching-off assembly 300 and the second switching-on and switching-off assembly 400 in each phase circuit to achieve a greater movement stroke, thereby ensuring effective opening. Of course, when the operating mechanism 01 is in the second working position 143, there may still be a small gap between the acting member and the inclined wall of the trapezoidal groove. Alternatively, in other embodiments, the above guiding groove 141 may also be a square groove. It should be understood that whether it is a square groove or a trapezoidal groove, interference with the opening or closing of the fuse disconnecting switch during the energy storage process of the elastic member 130 should be avoided.

[0078] Optionally, the operating mechanism 01 further includes a handle 150. The handle 150 includes a body and a driving groove 151 provided in the body. The body is connected to the end of the first linkage 110 away from the elastic member 130. A protrusion 111 is provided at the end of the first linkage 110 close to the handle 150, and the protrusion 111 extends into the driving groove 151. By rotating the driving handle 150, the groove wall of the driving groove 151 acts on the protrusion 111, so that the end of the first linkage 110 close to the guiding groove 141 moves in the guiding groove 141 to drive the first linkage 110 to move from the first working position 142 to the second working position 143.

[0079] Exemplarily, please refer to Figure 8 , the handle 150 includes a body and a driving groove 151 provided in the body. A protrusion 111 is provided at the end of the first linkage 110 close to the handle 150, and the protrusion 111 extends into the driving groove 151. By rotating the driving handle 150, the groove wall of the driving groove 151 acts on the protrusion 111, so that the end of the first linkage 110 close to the guiding groove 141 moves in the guiding groove 141.

[0080] For example, please refer to Figures 8 to 10 , when the operating mechanism 01 is in the closed state, at this time the protrusion 111 abuts against the first groove wall of the driving groove 151 (at this time the protrusion 111 moves to the first movement position 152, and when in the first movement position 152, the protrusion 111 abuts against the bottom end of the first groove wall), please refer to Figure 8, at this time, the elastic member 130 is not compressed by the linkage member; when it is necessary to drive the actuating member to move in the guiding groove 141 so that the elastic member 130 is compressed and stores energy, the first groove wall driving protrusion 111 of the driving groove 151 drives the first end of the first groove wall to move to the other end of the first groove wall (that is, the protrusion 111 moves to the second movement position 153, and when in the second movement position 153, the protrusion 111 abuts against the top end of the first groove wall). Please refer to Figure 9 , at this time, the elastic member 130 has completed energy storage under compression; at this time, if the elastic member 130 releases energy, the protrusion 111 travels an idle stroke in the driving groove 151 under the action of the elastic member 130, moving from the first groove wall to the second groove wall of the driving wall (that is, the protrusion 111 moves to the third movement position 154, and when in the third movement position 154, the protrusion 111 abuts against the bottom end of the second groove wall). Please refer to Figure 10 , at this time, the energy release of the elastic member 130 ends, and the protrusion 111 is located at one end of the second groove wall close to the first groove wall. The first switching-on and switching-off assembly 300 and the second switching-on and switching-off assembly 400 in each phase circuit are both in the off state. The protrusion 111 travels an idle stroke in the driving groove 151 when the elastic member 130 releases energy, that is, travels in the hollow area in the driving groove 151, which can effectively avoid interference caused by the handle 150 to the switching-on and switching-off movement of the fuse disconnecting switch.

[0081] 0081 If switching on is required, the driving handle 150 is rotated in the reverse direction (that is, in the direction opposite to the rotation direction when the driving operating mechanism 01 switches off), so as to drive the protrusion 111 to move from the bottom end of the second groove wall to the top end of the second groove wall (at this time, the protrusion 111 rotates back from the third movement position 154 during the switching-off process to the second movement position 153), as Figure 9 shown. At this time, the elastic member 130 compresses and stores energy; when the elastic member 130 releases energy, the protrusion 111 travels an idle stroke in the driving groove 151 under the action of the elastic member 130 (at this time, the protrusion 111 rotates back from the second movement position 153 during the switching-off process to the first movement position 152), and the protrusion 111 moves from the top end of the second groove wall to the bottom end of the first groove wall. At this time, the energy release of the elastic member 130 is completed, and the first switching-on and switching-off assembly 300 and the second switching-on and switching-off assembly 400 in each phase circuit are both in the on state.

[0082] 0082 In this embodiment, the shape of the driving groove 151 can be referred to Figure 8 as shown. It should be understood that the settings of the shape of the driving groove 151, the shape of the guiding groove 141, the movement path of the actuating member, and the movement path of the driving member 140 should be mutually adapted. The driving groove 151 can be a trapezoidal groove. Of course, the driving groove 151 can also be a triangular groove, as Figure 8 shown. Among them, when the driving groove 151 is a triangular groove, the first movement position 152 and the third movement position 154 of the protrusion 111 in the driving groove 151 can be the same position. In addition, the aforementioned bottom end and top end are both based onFigure 8 Or Figures 9 to 10 The description made by taking the orientation shown as an example should not be regarded as a limitation to this application.

[0083] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fusing disconnect switch, characterized in that, Comprising: An operating mechanism and a conductive circuit, the conductive circuit including at least one phase of circuit, each phase of circuit including a fusing component, a first switching component and a second switching component respectively connected to both ends of the fusing component, the operating mechanism being drivingly connected to the first switching component and the second switching component of each phase of circuit, and being configured to, when the operating mechanism is stressed, drive the first switching component and the second switching component of each phase of circuit to be simultaneously in a conducting state or a disconnected state; The operating mechanism includes a linkage component, a driving member and an elastic member connected to the linkage component, the driving member being drivingly connected to the first switching component and the second switching component, the driving member being provided with a guiding groove, the linkage component being configured to, when stressed, move from a first working position to a second working position within a hollow region inside the guiding groove to drive the elastic member to store energy; the elastic member being configured to, when releasing energy, drive the linkage component to move from the second working position to a third working position within the guiding groove to drive the driving member to make the first switching component and the second switching component of each phase of circuit be simultaneously in a conducting state or a disconnected state; The operating mechanism further includes a handle, the handle having a driving groove, the handle being drivingly connected to the linkage component via the driving groove, the handle driving the linkage component to move from the first working position to the second working position via a groove wall of the driving groove, and when the elastic member releases energy, an end of the linkage component drivingly connected to the driving groove moves within a hollow region inside the driving groove.

2. The fuse-type disconnecting switch according to claim 1, characterized in that, The conductive circuit further includes at least one phase of wiring mechanism connected to the at least one phase of circuit in one-to-one correspondence, each phase of wiring mechanism including an incoming line mechanism connected to the first switching component and an outgoing line mechanism connected to the second switching component.

3. The fuse disconnecting switch according to claim 2, characterized in that, The first switching component includes a first moving contact and a first stationary contact connected to one end of the fusing component, the second switching component includes a second moving contact and a second stationary contact connected to the other end of the fusing component; the first moving contact and the second moving contact are respectively connected to the operating mechanism; The first switching component further includes an incoming line moving contact connected to the first moving contact and an incoming line stationary contact connected to the incoming line mechanism, the second switching component further includes an outgoing line moving contact connected to the second moving contact and an outgoing line stationary contact connected to the outgoing line mechanism.

4. The fuse disconnecting switch according to claim 2, characterized in that, When the conductive circuit includes three-phase wiring mechanisms, wiring ends of the outgoing line mechanisms in the three-phase wiring mechanisms are arranged in a stepped manner on the same side of the fuse disconnecting switch.

5. The fuse-disconnecting switch according to claim 4, characterized in that, The three-phase wiring mechanism includes three-phase outgoing line mechanisms, the three-phase outgoing line mechanisms including a first-phase outgoing line conductive plate, a second-phase outgoing line conductive plate and a third-phase outgoing line conductive plate, the first-phase outgoing line conductive plate and the second-phase outgoing line conductive plate being respectively located on both sides of the third-phase outgoing line conductive plate, and surfaces of the first-phase outgoing line conductive plate and the second-phase outgoing line conductive plate being opposite to each other.

6. The fuse-disconnecting switch according to claim 1, wherein, The first switching component and the second switching component are linked.

7. The fuse disconnecting switch according to claim 1, characterized in that, The operating mechanism and at least one phase of circuit in the conductive circuit are arranged in the same row.

8. The fuse-disconnector according to claim 1, characterized in that, The fusing component includes a fuse body, a first plug blade and a second plug blade respectively connected to both ends of the fuse body; the first plug blade is connected to the first switching component, and the second plug blade is connected to the second switching component.

9. The fuse-disconnecting switch according to claim 2, characterized in that, It further includes a busbar housing, a first contact sub-housing and a second contact sub-housing which are oppositely arranged; a first groove is provided on the first contact sub-housing, a second groove with an opening opposite to that of the first groove is provided on the second contact sub-housing, a first insertion part and a second insertion part are provided on the busbar housing, and the first insertion part and the second insertion part are respectively inserted into the first groove and the second groove to enable the first contact sub-housing and the second contact sub-housing to enclose and form a contact housing, the first switching component and the second switching component are arranged in the contact housing, and the wiring mechanism is arranged in the busbar housing.

10. The fuse-disconnecting switch according to claim 9, wherein, It further includes a locking member and a fuse housing for accommodating the fusing component, a third groove is provided on the first contact sub-housing, a fourth groove is provided on the second contact sub-housing, the fuse housing includes a first fuse sub-housing and a second fuse sub-housing which are oppositely arranged, the first fuse sub-housing is connected to the second fuse sub-housing through the locking member, and the first fuse sub-housing and the second fuse sub-housing are respectively inserted into the third groove and the fourth groove to connect the fuse housing and the contact housing.

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