Isolating switch

Abstract

The invention relates to the field of electrical equipment, in particular to an isolating switch. Comprising a surface cover assembly comprising a handle; a housing; the linkage assembly comprises a wiring terminal which comprises a plurality of contact knives; the moving contact assembly comprises contact point parts of which the number is the same as that of the contact knives, and the moving contact assembly is rotationally arranged in the shell; the long swing arm comprises a movable end and a fixed end, and the fixed end is connected to the moving contact assembly; the elastic component is used for connecting the movable end of the long swing arm and the handle, and the handle controls the elastic component to swing; in a switching-on state, the contact knife is in contact with the contact part; according to the invention, the length of the arm of force is increased through the long swing arm, the pulling force needing to be applied is reduced, the existence time of an electric arc generated by switching on and switching off between the contact knife and the contact part can be effectively shortened by means of instantaneous contraction of the elastic component, and the service life can be effectively prolonged.

Description

Technical Field

[0001] The invention relates to the field of electrical equipment, and in particular to an isolating switch. Background Art

[0002] Isolating switch is an electrical device used in power system, usually used to disconnect or connect the circuit to ensure the safety of equipment during maintenance or overhaul. It can form physical isolation in the circuit to prevent the flow of current and ensure that the staff will not receive electric shock during maintenance. It is mainly used to provide a clear disconnection point in the circuit to ensure the safe isolation of the circuit during maintenance or overhaul.

[0003] Use scenarios:

[0004] Maintenance and overhaul: When electrical equipment needs to be repaired, inspected or replaced, the isolating switch can effectively cut off the circuit and prevent the current from continuing to flow, avoiding safety issues such as electric shock.

[0005] High-voltage electrical equipment: Disconnectors are widely used in high-voltage electrical equipment, such as substations and power distribution systems.

[0006] The multi-breakpoint isolating switches on the market usually open and close the switch by directly twisting the shaft of the moving contact, which is too laborious and slow to adjust manually. The arc generated during opening and closing lasts for a long time, and the energy of the arc is released on the shell, resulting in a short service life of the shell.

[0007] Therefore, there is an urgent need to provide an improved technical solution to solve the above technical problems. Summary of the invention

[0008] The purpose of the present invention is to provide a switch that is more labor-saving and has a longer service life in view of the above-mentioned technical problems.

[0009] In view of this, the present invention provides an isolating switch, comprising:

[0010] A face cover assembly, including a handle;

[0011] shell;

[0012] Linkage components, which include:

[0013] A terminal block, including a plurality of contacts;

[0014] The moving contact assembly includes a contact portion having the same number as the contact blades and is rotatably arranged in the housing;

[0015] A long swing arm, the long swing arm comprises a movable end and a fixed end, and the fixed end is connected to the moving contact assembly;

[0016] An elastic member, the elastic member is used to connect the movable end of the long swing arm and the handle, and the handle controls the swing of the elastic member;

[0017] When in the closed state, the contact knife contacts the contact part.

[0018] Furthermore, the fixed end is arranged at the middle position of the long swing arm, the other end of the long swing arm opposite to the movable end is hinged on the housing, and the fixed end is eccentrically hinged on the moving contact assembly.

[0019] Furthermore, one end of the long swing arm is fixedly connected to the moving contact assembly.

[0020] Furthermore, it comprises two groups of housings and linkage components, the long swing arms are arranged opposite to each other, a receiving cavity for receiving the long swing arms is formed between the housings, and the movable ends of the two long swing arms are fixedly connected.

[0021] Furthermore, the housings may be assembled in pairs or in groups of two.

[0022] Furthermore, the face cover assembly also includes: a slider that is driven by the handle and slides along the Z direction, and the elastic component is connected between the slider and the long swing arm.

[0023] Furthermore, the slider is also provided with a spring shaft sliding along the Y direction, and one end of the elastic member is hooked on the spring shaft;

[0024] A limiter, two of which are arranged on the housing, each of which is provided with a curved surface, and the limiter is in conflict with the spring shaft;

[0025] The limit slot is arranged on the shell and is used to limit the swing range of the spring shaft.

[0026] Furthermore, the moving contact assembly includes:

[0027] The disc body has a receiving groove on its circumferential side, two overlapping contact parts are arranged in the receiving groove, a gap is formed between the contact parts, and a notch is arranged on one side of the disc body and penetrates to the edge.

[0028] Furthermore, it also includes:

[0029] A power-assisting plate, one end of which is hinged on the outer shell, and the other end of which can be in contact with the sliding block, and a shifting rod is provided in the middle of the power-assisting plate, and the end of the shifting rod is hooked on one side of the long swing arm.

[0030] Furthermore, an eccentric hole is provided on one side of the moving contact assembly, and an eccentric rod matched with the eccentric hole is provided on the side wall of the long swing arm, and the eccentric rod can slide and rotate in the eccentric hole.

[0031] The beneficial effects of the present invention are:

[0032] 1. The present invention increases the length of the force arm by means of a long swing arm, reduces the pulling force that needs to be applied, and relies on the instantaneous contraction of the elastic component to effectively shorten the existence time of the arc generated by the closing and opening of the contact blade and the contact part, thereby effectively extending the service life.

[0033] 2. A notch is provided on one side of the disk body of the present invention, which runs through the edge of the disk body. The notch facilitates the placement of the contact blade in the accommodating groove, making it easy to match and install the contact blade and the moving contact assembly. When the switch is opened, the contact blade corresponds to the notch position, which can effectively prevent the contact blade from having a creepage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0035] Figure 2 It is a schematic structural diagram of the matching of the cover body and the shell of the present invention;

[0036] Figure 3 It is a schematic diagram of the installation structure of the spring shaft of the present invention;

[0037] Figure 4 It is a schematic diagram of the installation structure of two housings of the present invention;

[0038] Figure 5 It is a schematic diagram of the three-dimensional structure of a single shell of the present invention;

[0039] Figure 6 It is a structural schematic diagram of the moving contact assembly of the present invention;

[0040] Figure 7 It is a schematic diagram of the matching structure between the slider and the spring shaft of the present invention;

[0041] Figure 8 It is a structural schematic diagram of the eccentric hole of the present invention.

[0042] The symbols in the figure are:

[0043] 1. Cover body; 2. First slide groove; 3. Slider; 4. Shell; 5. Wiring terminal; 6. Contact knife; 7. Contact part; 8. Long swing arm; 9. Elastic member; 10. Handle; 11. Accommodating cavity; 12. Spring shaft; 13. Limiting member; 14. Limiting slot; 15. Disc; 16. Accommodating slot; 17. Notch; 18. Power assist plate; 19. Push rod; 20. Eccentric hole; 21. Eccentric rod; 22. Arc-starting slot; 23. Rivet tube; 24. Hook slot. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0045] Embodiment 1:

[0046] This embodiment provides an isolating switch, comprising:

[0047] The face cover assembly includes a handle 10;

[0048] Housing 4;

[0049] Linkage components, which include:

[0050] A wiring terminal 5, comprising a plurality of contact blades 6;

[0051] The movable contact assembly includes a contact portion 7 having the same number as the contact blades 6, and is rotatably arranged in the housing 4;

[0052] A long swing arm 8, the long swing arm 8 comprises a movable end and a fixed end, and the fixed end is connected to the moving contact assembly;

[0053] An elastic member 9, the elastic member 9 is used to connect the movable end of the long swing arm 8 and the handle 10, and the handle 10 controls the swing of the elastic member 9;

[0054] When in the closed state, the contact blade 6 contacts the contact point 7 .

[0055] The switch of this embodiment is divided into two parts, a shell 4 and its internal structure and a cover assembly. The cover assembly is installed on the front of the shell 4 at a position that is easy to observe. The cover assembly includes a cover body 1 and a handle 10 rotatably connected to the cover body 1. For easy installation, the shell 4 is divided into two parts, left and right. The linkage assembly includes a wiring terminal 5, a moving contact assembly, a long swing arm 8 and an elastic member 9. The wiring terminal 5 is arranged on the upper and lower sides of the shell 4 for connecting the neutral and live wires. A wiring terminal 5 for connecting the ground wire can also be added. The wires are fixed by means of screws, and the wiring terminal The sub-contact 5 includes a contact knife 6, which is a static contact. The contact knife 6 is arranged on the upper and lower sides of the moving contact assembly, and can also be at any position on the circumferential side. The contact knife 6 is provided with an arc-striking groove 22, and the arc-striking groove 22 is used to prevent the arc generated when closing the circuit breaker from diverging. Magnets are installed on the walls of the shell 4 on both sides of the contact knife 6. The magnets generate a magnetic blowing effect to start the arc, thereby preventing the arc from releasing energy to the shell 4 and causing damage to the shell 4. The shell 4 can be effectively protected, and a grid corresponding to the contact part is provided on the outer peripheral side of the swinging direction of the contact part in the shell 4. The grid pieces are arranged in a staggered manner of long and short to achieve arc extinguishing.

[0056] The moving contact assembly includes a disk body 15, and a contact part 7 electrically connected to each other is arranged inside the disk body 15. The contact part 7 is made of conductive material. Axles are arranged on both sides of the disk body 15. The axles are fitted in the housing 4 so that the moving contact assembly can be selected. The contact part 7 can change its position by rotation. When the circuit is closed, the contact blade 6 and the contact part 7 are in contact to realize the energization of the neutral and live wires. When the circuit is opened, the contact blade 6 and the contact part 7 are staggered to realize the disconnection of the moving contact assembly from the neutral and live wires at the same time, realizing double breaking or multi-breakpoint opening, improving the breaking capacity, and dividing the circuit into two independent breakpoints, each breakpoint is separated at the same time, thereby effectively reducing the energy carried by a single breakpoint when breaking a short-circuit current. This design significantly improves the breaking capacity of the circuit breaker and can handle higher short-circuit currents.

[0057] The double breakpoint design can effectively avoid current short circuit and arc generation, reduce the impact range of short circuit faults, and thus improve the reliability of the power grid.

[0058] The long swing arm 8 includes a movable end and a fixed end. The long swing arm 8 is generally arranged on the outer wall of the housing 4. The fixed end of the long swing arm 8 is fixedly connected to the center position of the disk 15 of the moving contact assembly. When the movable end is pulled up and down, the long swing arm 8 swings up and down. The movable end is in the upper and lower positions, which correspond to the opening and closing states of the switch respectively. The length of the force arm is increased by the long swing arm 8, and the pulling force to be applied is reduced. A swing rod that swings up and down by rotating the handle 10 can be arranged on the handle 10. One end of the elastic member 9 is fixed on the swing rod, and the other end is fixed on the long swing arm. 8, when one end of the elastic component 9 is swung up and down by operating the handle 10, the energy storage of the elastic component 9 can make the closing of the long swing arm 8 produce hysteresis, and the position of the movable end of the long swing arm 8 can be instantaneously adjusted by relying on the property of the elastic component 9 to instantly restore to its original state. After the handle 10 is adjusted from the opening position to the closing position, the elastic component 9 instantly contracts and pulls the long swing arm 8 to the closing position, which can effectively shorten the existence time of the arc generated by the closing and opening of the contact blade 6 and the contact part 7, and can effectively extend the service life.

[0059] The elastic member 9 is usually a tension spring, with two ends respectively hung on the handle 10 and the long swing arm 8 .

[0060] Embodiment 2:

[0061] This embodiment provides an isolating switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0062] The fixed end is arranged at the middle position of the long swing arm 8, the other end of the long swing arm 8 opposite to the movable end is hinged on the housing 4, and the fixed end is eccentrically hinged on the moving contact assembly.

[0063] Another connection form of the long swing arm 8 is to set the fixed end in the middle position of the long swing arm 8. The fixed end refers not only to the end, but also to the installation position of the long swing arm 8 on the disk body 15. The fixed end is hinged at the eccentric position of the disk body 15, and the other end of the long swing arm 8 opposite to the movable end is hinged on the outer shell 4, or is hinged at the center position of the disk body 15. When hinged on the outer shell 4, it is necessary to set an eccentric hole 20 on the disk body 15, and an eccentric rod 21 that cooperates with the eccentric hole 20 is provided on the side wall of the long swing arm 8. The eccentric rod 21 can slide and rotate in the eccentric hole 20 for easy movement. Through the above method, the pulling force that can start the movable end of the long swing arm 8 can be further reduced, which can save more effort and make the rotation of the handle 10 easier.

[0064] Embodiment 3:

[0065] This embodiment provides an isolating switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0066] It comprises two groups of housings 4 and linkage components, the long swing arms 8 are arranged opposite to each other, a receiving cavity 11 for receiving the long swing arms 8 is formed between the housings 4, and the movable ends of the two long swing arms 8 are fixedly connected.

[0067] The two groups of shells 4 can be assembled with each other and fixedly connected by rivet tubes 23, and the long swing arms 8 are arranged opposite to each other and adjacent to each other. A accommodating cavity 11 for accommodating the long swing arms 8 is formed between the shells 4, which can protect the long swing arms 8 and make them more beautiful. The movable ends of the two long swing arms 8 are fixedly connected, which can be a fixing rod connected by screws, or the two long swing arms 8 can be bent into one piece, or they can be welded together so that the two long swing arms 8 can swing synchronously. The above method can realize the assembly of multiple shells 4, increase the number of wiring terminals 5, and connect multiple wires.

[0068] The housings 4 can be assembled in pairs or in groups of two.

[0069] Two groups of two mounted housings 4 are assembled together and connected together through riveted tubes 23 . Alternatively, two or a single housing 4 can be assembled together to achieve the arrangement of multiple groups of connecting terminals 5 .

[0070] Embodiment 4:

[0071] This embodiment provides an isolating switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] The face cover assembly further includes: a slider 3 driven by a handle 10 and arranged to slide along the Z direction, and an elastic member 9 connected between the slider 3 and the long swing arm 8 .

[0073] A slide groove is provided on the cover body 1, and a slider 3 is provided in the slide groove and is slidably connected along the Z direction. A gear is provided on the handle 10, and a rack is provided on the slider 3. Through the cooperation of the gear and rack, when the handle 10 is rotated, the slider 3 can slide up and down along the Z direction, and one end of the elastic component 9 is fixed on the movable end of the long swing arm 8, and the other end is fixed on the slider 3, so that the end of the elastic component 9 away from the long swing arm 8 can move straight up and down, so that the moving structure of the elastic component 9 is more stable, and there will be no left and right swinging, so that the long swing arm 8 will not be subjected to the force in the left and right directions, and the force generated by the long swing arm 8 and the disk body 15 in directions other than torsion is reduced, so that the structure is more stable and the service life is increased.

[0074] Embodiment 5:

[0075] This embodiment provides an isolating switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0076] The slider 3 is also provided with a spring shaft 12 that slides along the Y direction, and one end of the elastic member 9 is hooked on the spring shaft 12;

[0077] A limiter 13, two limiters 13 are provided on the housing 4, a curved surface is provided on the limiter 13, and the limiter 13 conflicts with the spring shaft 12;

[0078] The limiting slot 14 is provided on the housing 4 and is used to limit the swing range of the spring shaft 12 .

[0079] The slider 3 is also provided with a first slide groove 2 opened along the Y direction, and the spring shaft 12 is installed in the first slide groove 2. The first slide groove 2 can be open or closed. The open slide groove is convenient for installing the spring shaft 12. The spring shaft 12 is provided with a plurality of hook grooves 24, and the hook grooves 24 are used to hook the ends of the main tension springs, which are convenient for installation and have a stable structure; two limit members 13 are provided on all shells 4, and they are preferably provided on the outermost sides of the shells 4. The limit member 13 is provided with a curved surface, and the limit card groove 14 is provided on the end surface of the shell 4 close to the spring rod. The limit card groove 14 can be open or closed. The former is convenient for installation, and the latter has a stable structure; the above method can make the elastic member 9 always in a state of stretched length, so that the elastic member 9 is always in a state of energy storage during the movement of the spring rod. The set limit card groove 14 can limit the moving range of the spring rod, and the long swing arm 8 can be swung when the spring shaft 12 reaches the two end points, so as to prevent excessive movement from causing excessive elongation and damage of the elastic member 9.

[0080] It should be noted that the spring shaft 12 can be used in conjunction with the elastic components 9 of multiple housings 4 at the same time, thereby simplifying the structure.

[0081] Embodiment 6:

[0082] This embodiment provides an isolating switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0083] The moving contact assembly includes:

[0084] The disc body 15 has a receiving groove 16 on its circumferential side. Two overlapping contact parts 7 are arranged in the receiving groove 16 . A gap is formed between the contact parts 7 . A notch 17 penetrating to the edge is arranged on one side of the disc body 15 .

[0085] A receiving groove 16 is provided on the circumferential side of the disk body 15, and two overlapping contact parts 7 are provided on both sides of the receiving groove 16. A gap is formed between the contact parts 7. The contact blade 6 contacts the contact part 7 in the gap, thereby increasing the contact area and enhancing the conductive capacity. A notch 17 is provided on one side of the disk body 15 and passes through the edge of the disk body 15. This notch 17 facilitates the placement of the contact blade 6 in the receiving groove 16, so that the contact blade 6 and the moving contact assembly are easy to match and install. When the switch is opened, the contact blade 6 corresponds to the position of the notch 17, which can effectively prevent the contact blade 6 from having a creepage effect.

[0086] Embodiment 7:

[0087] This embodiment provides an isolating switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0088] Also includes:

[0089] A power assisting plate 18 is hinged at one end on the housing 4 , and the other end can be in contact with the slider 3 , and a lever 19 is provided in the middle of the power assisting plate 18 , and the end of the lever 19 is hooked on one side of the long swing arm 8 .

[0090] One end of the assisting plate 18 is hinged on the housing 4, and the other end can be pressed down by the slider 3 or the spring rod. When the switch is opened, since the contact knife 6 is clamped between the contact parts 7, or contacts the contact parts 7, a certain friction force will be generated, and a larger pulling force is required for closing the switch. When the assisting plate 18 is contacted by the spring rod or the slider 3, the long swing arm 8 is pushed in the swinging direction of the assisting plate 18 by the lever 19, which can more effectively achieve the opening of the switch.

[0091] Also includes:

[0092] The face cover assembly comprises a face cover body, a display window is arranged on the face cover body, a slider slidingly arranged along the Z direction and a handle for driving the slider to move, and a driving rod on the slider;

[0093] shell;

[0094] A linkage component, the linkage component is driven by the movement of a slider;

[0095] An indicating slide plate is driven by a driving rod, is slidably arranged in a slide groove on the inner surface of the cover body along the Z direction and is correspondingly arranged at the display window position, an elastic member is arranged on one side of the indicating slide plate, a protrusion is arranged on the surface of the elastic member, and at least two grooves matching with the protrusion are arranged on one side of the slide groove;

[0096] When the slider slides, the protrusions move into different grooves.

[0097] The face cover assembly includes a face cover body, a display window is provided on the face cover body, a slider is provided for sliding along the Z direction shown in the figure, a groove body for slidingly installing the slider is provided on the face cover body, the slider passes through the groove body and is connected with the linkage assembly, the handle is rotatably provided on the face cover body, and the slider is driven to rotate by rotation, a disc with a groove body open to the edge can be installed on the handle, and a slide rod that slides with the groove body on the disc can be provided on the slider to realize the sliding of the slider driven by the rotation of the handle, the outer shell is the main body for installing the linkage assembly, and the linkage assembly realizes the closing and opening actions through the sliding drive of the slider, and the specific structure is not repeated; the indicating slide plate is driven by the contact of the driving rod on the slider, and the indicating slide plate is slidably provided in the slide groove on the inner surface of the face cover body along the Z direction, and the indicating slide plate corresponds to The indicator slide is arranged at a position of the display window, through which the color of the indicator slide can be observed. The indicator slide is divided into two color areas, which are usually arranged in red and green colors. An elastic member is arranged on one side of the indicator slide, and the elastic member can be formed on the indicator slide, such as a through hole is arranged on one side of the indicator slide to form a thin-walled elastic member, a protrusion is arranged on the surface of the elastic member, and at least two grooves that can cooperate with the protrusion are arranged on one side wall of the slide groove. When the slider slides, the indicator slide is pushed by the up and down swinging of the driving rod. When the protrusion escapes from the groove, the elastic member is compressed. When the protrusion moves to another groove, the elastic member returns to its original state, and the protrusion is clamped in the groove, so that the position of the indicator slide is fixed. Then the color of the indicator slide is observed through the display window. Each position corresponds to a color and a working state.

[0098] Through the above structure, the working state of the isolating switch can be displayed, and the structure is simple, easy to install, and the working state is stable.

[0099] The indicating slide plate is provided with a gear rod, and a driving rod is arranged between the gear rods. When the protrusion needs to move from one groove to another groove, the driving rod 11 contacts and moves the gear rod, and the width between the gear rods is greater than the spacing between the two grooves.

[0100] A gear lever is provided on the back of the indicating slide plate, and the driving rod is placed between the two gear levers. When the protrusion needs to move from one groove to another, the driving rod contacts and pushes the moving gear lever to move the gear lever, and the spacing between the gear levers is greater than the spacing between the two grooves. The sliding distance of the slider is controlled by the spacing between the gear levers, which can increase the moving distance of the slider. The gear lever is pushed only when the switch is closed or opened. Increasing the moving distance can make it easier for the slider to drive the linkage component.

[0101] The indicating slide plate is provided with a retaining groove. When the protrusion needs to move from one groove to another groove, the driving rod abuts against one end of the retaining groove, and the length of the retaining groove is greater than the distance between the two grooves.

[0102] Replace the gear lever with a gear slot. Compared with the gear lever, the gear slot structure is more stable, and compared with the gear slot, the gear lever is easier to install.

[0103] It also includes a pressing plate, which is fixedly arranged on the face cover body 1; the pressing plate includes a sliding groove, in which a sliding block is slidably arranged, and a through hole for setting the sliding groove is arranged at the bottom of the sliding groove; a spur rack is arranged on the sliding block, and a gear matching the spur rack is arranged on the handle.

[0104] The pressure plate is fixedly mounted on the face cover body by screws, and a slide groove is opened on the pressure plate on the inner side of the face cover body (the front side of the face cover body is the outer side), a slider is arranged in the slide groove, and the handle controls the movement of the slider through gear rack transmission.

[0105] The indicating slide plate is provided with a stabilizing portion which contacts with the pressing plate, and the cross-sectional area of ​​the stabilizing portion is smaller than the cross-sectional area of ​​the indicating slide plate.

[0106] The stabilizing portion is formed on one side of the indicating slide plate, so that the indicating slide plate body has a T-shaped cross-section structure, which reduces the contact area between the indicating slide plate and the pressure plate and reduces friction.

[0107] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which belong to the protection scope of the present application.

Claims

1. An isolating switch, characterized in that: include: A face cover assembly, comprising a handle (10); Housing (4); Linkage components, which include: A wiring terminal (5) comprising a plurality of contact blades (6); The movable contact assembly comprises contact portions (7) having the same number as the contact blades (6), and is rotatably arranged in the housing (4); A long swing arm (8), the long swing arm (8) comprising a movable end and a fixed end, the fixed end being connected to the moving contact assembly; An elastic member (9), the elastic member (9) is used to connect the movable end of the long swing arm (8) and the handle (10), and the handle (10) controls the swing of the elastic member (9); When in the closed state, the contact blade (6) contacts the contact part (7).

2. The isolating switch according to claim 1, characterized in that: The fixed end is arranged at the middle position of the long swing arm (8), the other end of the long swing arm (8) opposite to the movable end is hinged on the housing (4), and the fixed end is eccentrically hinged on the moving contact assembly.

3. The isolating switch according to claim 1, characterized in that: One end of the long swing arm (8) is fixedly connected to the moving contact assembly.

4. The isolating switch according to claim 1, characterized in that: It comprises two groups of housings (4) and linkage components, the long swing arms (8) are arranged opposite to each other, a receiving cavity (11) for receiving the long swing arms (8) is formed between the housings (4), and the movable ends of the two long swing arms (8) are fixedly connected.

5. The isolating switch according to claim 4, characterized in that: The housings (4) can be assembled in pairs or in groups of two.

6. The isolating switch according to claim 1, characterized in that: The face cover assembly also includes: a slider (3) driven by a handle (10) and arranged to slide along the Z direction; an elastic component (9) is connected between the slider (3) and the long swing arm (8).

7. The isolating switch according to claim 6, characterized in that: The slider (3) is also provided with a spring shaft (12) that slides along the Y direction, and one end of the elastic member (9) is hooked on the spring shaft (12); A limiting member (13), two limiting members (13) are provided on the housing (4), a curved surface is provided on the limiting member (13), and the limiting member (13) is in conflict with the spring shaft (12); A limit slot (14) is provided on the housing (4) and is used to limit the swing range of the spring shaft (12).

8. The isolating switch according to claim 1, characterized in that: The moving contact assembly includes: A disc body (15) is provided with a receiving groove (16) on the circumferential side of the disc body (15), two overlapping contact parts (7) are provided in the receiving groove (16), a gap is formed between the contact parts (7), and a notch (17) is provided on one side of the disc body (15) and penetrates to the edge.

9. The isolating switch according to claim 1, characterized in that: Also includes: A power-assisting plate (18) is hinged at one end on the housing (4), and the other end can be in contact with the slider (3). A lever (19) is provided in the middle of the power-assisting plate (18), and the end of the lever (19) is hooked on one side of the long swing arm (8).

10. The isolating switch according to claim 3, characterized in that: An eccentric hole (20) is provided on one side of the moving contact assembly, and an eccentric rod (21) matched with the eccentric hole (20) is provided on the side wall of the long swing arm (8). The eccentric rod (21) can slide and rotate in the eccentric hole (20).

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