A disconnector

Abstract

The application relates to the technical field of switches, and relates to an isolating switch, wherein a moving contact assembly is rotatably arranged in a shell, a static contact assembly is arranged at a position close to the moving contact assembly, a V-shaped spring accommodating groove is arranged at a position close to a first end of the moving contact assembly in the shell, the shell further has a shifting rod, a spring and a sliding block, the spring is arranged in the spring accommodating groove, a first end of the spring abuts against the bottom of the spring accommodating groove, a second end of the spring is connected with the sliding block, a handle is connected with the shifting rod, the shifting rod is rotatably arranged on the shell, the sliding block has a first shifting protrusion and a third shifting protrusion, the shifting rod is connected with the first shifting protrusion, the first end of the moving contact assembly is provided with a second shifting protrusion, and the sliding block is connected with the second shifting protrusion through the third shifting protrusion. The isolating switch has the advantages of few parts, simple assembly, small volume, safety performance in line with national standards, and improvement in installation convenience and economy compared with the prior art.

Description

Technical Field

[0001] This invention relates to the field of switch technology, and in particular to an isolating switch. Background Technology

[0002] A switch-disconnector is a switching device primarily used for isolating power supplies, switching operations, and connecting and disconnecting low-current circuits.

[0003] Currently, the commonly used disconnect switches on the market use many parts, are relatively complex to assemble, and are quite large in size. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a disconnecting switch that has fewer parts, is simpler to assemble, is smaller in size, and meets national safety standards. Compared with existing disconnecting switches, it offers improved ease of installation and cost-effectiveness.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A disconnect switch includes a handle, a housing, a moving contact assembly, and a stationary contact assembly. The moving contact assembly is rotatably mounted inside the housing, and the stationary contact assembly is positioned adjacent to the moving contact assembly. A V-shaped spring receiving groove is provided inside the housing near the first end of the moving contact assembly. The housing also includes a lever, a spring, and a slider. The spring is placed in the spring receiving groove, with its first end abutting the bottom of the groove and its second end connected to the slider. The handle is connected to the lever, which is rotatably mounted on the housing. The slider has a first actuating protrusion and a third actuating protrusion. The lever is connected to the first actuating protrusion. The first end of the moving contact assembly has a second actuating protrusion, and the slider is connected to the second actuating protrusion via the third actuating protrusion. In the separated state, the spring rests against one side wall of the spring receiving groove, and the moving contact assembly and the stationary contact assembly are separated. Rotating the handle and using the lever to move the slider horizontally drives the spring to rotate and compress around the first end of the spring. At the same time, the slider drives the moving contact assembly to rotate through the second actuating protrusion. When the spring changes from compression to a rebound state and finally rests against the other side wall of the spring receiving groove, the moving contact assembly and the stationary contact assembly come into contact, so that the disconnecting switch is in the closed state.

[0006] Preferably, there are two sets of springs and spring receiving grooves, and the two sets of spring receiving grooves are arranged symmetrically with the axis of the moving contact assembly as the center.

[0007] Preferably, the bottom of the spring receiving groove has a spring positioning protrusion for positioning the spring and preventing the first end of the spring from moving, and the first end of the spring is fitted into the spring positioning protrusion.

[0008] Preferably, the housing has a mounting groove for mounting the moving contact assembly, and each side of the mounting groove has a number of corresponding stationary contact mounting positions. The stationary contact assembly is installed in the stationary contact mounting positions. When the disconnecting switch is in the closed state, the moving contact assembly is connected to the stationary contact assemblies on both sides.

[0009] Preferably, the contact support frame is cylindrical in shape, with several receiving holes in the middle of the contact support frame, and a shoulder is formed between two adjacent receiving holes, with an annular groove on the shoulder; the mounting groove has multiple annular guide structures, with a clearance groove between two adjacent guide structures, and when the moving contact assembly is installed in the mounting groove, the guide structure is engaged in the annular groove on the outer ring surface of the shoulder.

[0010] Preferably, the moving contact assembly includes a contact support frame, a moving contact, and spring sheets. The main body of the contact support frame has a circular cross-section and a radially opened receiving hole. Inside the receiving hole, there are two corresponding positioning protrusions at positions corresponding to the axis of the contact support frame. The moving contact includes a first contact piece and a second contact piece in the shape of a long strip plate, wherein the first contact piece and the second contact piece are aligned and fitted together. There are two spring sheets, each with an arc-shaped structure. The spring sheet has a positioning groove in the middle of one of its protruding sides, and both ends of the spring sheet are bent to form positioning folds. The two spring sheets are respectively fastened to both sides of the moving contact, and the arc-shaped structure at the end of the spring sheet is fastened to the end of the moving contact in the length direction. The two spring sheets and the moving contact are installed together in the receiving hole, and the positioning protrusions are engaged in the positioning grooves. The two spring plates are used to apply elastic force to the first and second contact plates to press against each other and to position the first and second contact plates.

[0011] Preferably, the first contact piece has a mounting protrusion on the side facing the second contact piece, and the second contact piece has a mounting cutout on the side facing the first contact piece. The mounting cutout and the mounting protrusion are shaped to match, and when the first contact piece and the second contact piece are attached, the mounting protrusion is embedded into the mounting cutout.

[0012] Preferably, the first contact piece forms a first chamfer along the length of one side surface of the second contact piece, and the second contact piece forms a second chamfer along the length of one side surface of the first contact piece. When the first contact piece and the second contact piece are attached, the first chamfer and the second chamfer combine to form a guide groove opened along the height direction of the moving contact.

[0013] Preferably, the stationary contact assembly includes a stationary contact and a terminal, wherein the stationary contact is mounted on the terminal, and the stationary contact has a conductive plate protruding from the main body of the stationary contact assembly. The connection between the end face and the outer edge of the conductive plate forms a chamfer. When the moving contact assembly and the stationary contact assembly are closed, the conductive plate enters between the first contact piece and the second contact piece through the guide groove, and the first contact piece and the second contact piece are clamped on both sides of the conductive plate.

[0014] Preferably, the housing includes an upper housing assembly and a lower housing assembly. The upper housing assembly further includes an upper housing, a cover, and a viewing window. The top surface of the upper housing is hollowed out corresponding to the position of the stationary contact assembly. The upper viewing window covers the hollowed-out area of ​​the upper housing. The cover covers the viewing window and is hollowed out corresponding to the position of the viewing window.

[0015] The beneficial effects of using this invention are: Because this disconnecting switch has an integrated guide structure inside the housing, and the manufacturing process pre-reserves mounting positions for the stationary contact, the moving contact assembly and the stationary contact assembly are directly installed inside the housing. The internal structure of the disconnecting switch is compact, the parting surface between the upper housing assembly and the lower housing assembly is reasonable, the assembly is simple, and the size is small.

[0016] The disconnecting switch, through its spring and spring receiving groove design, enables operation independent of human intervention. This means the speed of human operation is independent of the internal operating speed of the switch, ensuring stable connection and disconnection speeds. The spring also prevents the disconnecting switch from automatically switching between open and closed states; it can only be operated using a specific handle, thus enhancing safety.

[0017] Because the moving contact assembly works with the contact support frame, the moving contact, and the spring plate, and because of the special design of the moving contact and the spring plate, the spring plate can hold the moving contact and accurately position it. During the switching of the disconnecting switch, the moving contact will not shift.

[0018] In addition, this disconnecting switch also has the following characteristics: 1. Fewer parts, simple assembly. This disconnect switch drive mechanism consists of four parts: a lever, a slider, a spring, and a contact support frame. The fewer parts significantly reduce the number of molds required, further reducing the cost of the switch. Moreover, only four screws are needed to assemble the mechanism.

[0019] 2. Smaller size. Taking a common disconnector of the same grade on the market as an example, its length, width, and thickness are approximately 107×124×96 (mm). In comparison, the size of this disconnector can be controlled at around 91×85×66 (mm), reducing the volume by about 60%.

[0020] 3. The moving and stationary contacts of this disconnecting switch rotate to open and close, currently at a rotation angle of 90°. By adjusting the mechanism dimensions, the rotation angle can be further increased, thereby increasing the opening distance and leaving room for further upgrades to improve switch performance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the isolating switch of the present invention.

[0022] Figure 2 This is a schematic diagram showing the handle and the disconnect switch body of the present invention in a separated state.

[0023] Figure 3 This is an exploded view of the disconnecting switch of the present invention.

[0024] Figure 4 This is an exploded view of the moving contact assembly in the disconnector of the present invention.

[0025] Figure 5 This is an exploded view of the moving contact in the disconnector switch of the present invention.

[0026] Figure 6 This is a schematic diagram showing the separated state of the stationary contact and terminal in the disconnecting switch of the present invention.

[0027] Figure 7 This is an exploded view of the lower housing assembly in the disconnector switch of the present invention.

[0028] Figure 8 This is an exploded view of the upper housing assembly in the disconnector switch of the present invention.

[0029] Figure 9 This is a schematic diagram of the base assembly in the disconnector switch of the present invention.

[0030] Figure 10 This is a schematic diagram of the handle assembly in the disconnect switch of the present invention.

[0031] Figure 11 This is a schematic diagram of the disconnected state in the disconnecting switch of the present invention.

[0032] Figure 12 This is a schematic diagram of the disconnected state from another perspective in the disconnecting switch of the present invention.

[0033] Figure 13 This is a schematic diagram of the intermediate state of the disconnecting switch of the present invention.

[0034] Figure 14 This is a schematic diagram of the intermediate state of the disconnecting switch in this invention from another perspective.

[0035] Figure 15 This is a schematic diagram of the closed state in the disconnecting switch of the present invention.

[0036] Figure 16This is a schematic diagram from another perspective of the closed state of the disconnecting switch of the present invention.

[0037] The reference numerals in the figures include: 1-Handle, 2-Isolating switch body, 3-Moving contact assembly, 4-Stationary contact assembly, 5-Lower housing assembly, 6-Upper housing assembly, 7-Foot assembly, 8-Contact support frame, 9-Moving contact, 10-Spring plate, 11-Stationary contact, 12-Terminal, 13-Lower housing, 14-Spring, 15-Slider, 16-Upper housing, 17-Toggle lever, 18-Cover, 19-Viewing window, 20-Clamping plate, 21-Foot, 22-Locking plate, 23-Handle housing, 24-Shaft; 81-Shaft body, 82-Shaft shoulder, 83-Accommodation hole, 84-Positioning protrusion, 85-Second actuating protrusion; 91-First contact piece, 911-Mounting protrusion, 912-First chamfer, 92-Second contact piece, 921-Mounting cutout, 922-Second chamfer; 101-Positioning groove, 102-Extension body, 103-Positioning fold; 131-Positioning structure, 132-Guide structure, 133-Stationary contact mounting position, 134-Screw hole, 135-Allowing groove, 136-Spring receiving groove, 137-Spring positioning protrusion; 151 - First toggle protrusion, 152 - Third toggle protrusion. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this technical solution clearer, the following detailed description, in conjunction with specific embodiments, further illustrates this technical solution. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this technical solution.

[0039] like Figures 1-10As shown, this embodiment proposes a disconnecting switch, including a handle 1, a housing, a moving contact assembly 3, and a stationary contact assembly 4. The moving contact assembly 3 is rotatably mounted inside the housing, and the stationary contact assembly 4 is positioned adjacent to the moving contact assembly 3. A V-shaped spring receiving groove 136 is provided inside the housing near the first end of the moving contact assembly 3. The housing also includes a lever 17, a spring 14, and a slider 15. The spring 14 is placed in the spring receiving groove 136, with its first end abutting the bottom of the groove and its second end connected to the slider 15. The handle 1 is connected to the lever 17, which is rotatably mounted on the housing. The slider 15 has a first actuating protrusion 151 and a third actuating protrusion 152. 7 is connected to the first actuating protrusion 151. The first end of the moving contact assembly 3 is provided with a second actuating protrusion 85. The slider 15 is connected to the second actuating protrusion 85 through the third actuating protrusion 152. In the separated state, the spring 14 abuts against one side wall of the spring receiving groove 136, and the moving contact assembly 3 and the stationary contact assembly 4 are separated. Rotating the lever 17 causes the slider 15 to move horizontally, and drives the spring 14 to rotate and compress around the first end of the spring 14. At the same time, the slider 15 drives the moving contact assembly 3 to rotate through the second actuating protrusion 85. When the spring 14 changes from compression to rebound and finally abuts against the other side wall of the spring receiving groove 136, the moving contact assembly 3 and the stationary contact assembly 4 come into contact, so that the disconnecting switch is in the closed state.

[0040] Preferably, there are two sets of springs 14 and spring receiving grooves 136, and the two sets of spring receiving grooves 136 are arranged symmetrically with the axis of the moving contact assembly 3 as the center. The two sets of springs 14 and spring receiving grooves 136 can be compressed and rebounded on both sides of the moving contact assembly 3, forming a system independent of human operation, that is, the speed of human operation is independent of the internal operating speed of the switch, so that the speed of connection and disconnection is stable.

[0041] The bottom of the spring receiving groove 136 has a spring positioning protrusion 137 for positioning the spring 14 and preventing the first end of the spring 14 from moving. The first end of the spring 14 is fitted into the spring positioning protrusion 137. When combined with the V-shaped spring receiving groove 136, the spring 14 can be positioned by the spring positioning protrusion 137, and the spring 14 can also swing left and right by the drive of the slider 15.

[0042] Specifically, such as Figure 1 , Figure 2 As shown, this disconnecting switch consists of a handle 1 and a disconnecting switch body 2, which are detachable. The lower part of the handle 1 has a transmission structure with a square cross-section, and the top of the disconnecting switch body has a socket adapted to the transmission structure to facilitate switching between the open and closed states of the disconnecting switch.

[0043] like Figure 3As shown, the disconnecting switch consists of a moving contact assembly 3, a stationary contact assembly 4, a lower housing assembly 5, an upper housing assembly 6, and a base assembly 7. The following details each of these components.

[0044] like Figure 4 As shown, the moving contact assembly 3 consists of a contact support frame 8, a moving contact 9, and a spring plate 10. The contact support frame 8 is cylindrical in shape, with the main body being the shaft 81. Several receiving holes 83 are formed in the middle of the contact support frame 8, and a shoulder 82 is formed between adjacent receiving holes 83. An annular groove is formed on the shoulder 82. Figure 7 As shown, the mounting groove has multiple annular guide structures 132, with a clearance groove 135 between adjacent guide structures 132. When the moving contact assembly 3 is installed in the mounting groove, the positioning structure 131 is also annular, and the shoulder 82 is installed on the positioning structure 131. The guide structure 132 on the positioning structure 131 is engaged in the annular groove on the outer ring surface of the shoulder 82. Multiple effects can be achieved through the cooperation of the contact support frame 8 and the lower housing 13. First, the contact support frame 8 can form a rotation limit and rotation guide effect in the lower housing 13 through the shoulder 82 and the annular groove on the shoulder 82. By designing multiple shoulders 82, the contact support frame 8 is subjected to balanced force in all parts and the rotation drive action is precise. The receiving hole 83 and the positioning protrusion 84 provided on the shaft 81 serve to install and position the moving contact 9 and the spring plate 10.

[0045] Combination Figure 4 , Figure 5 As shown, the moving contact assembly 3 includes a contact support frame 8, a moving contact 9, and a spring plate 10. The contact support frame 8 has a circular cross-section and a radially opened receiving hole 83. Inside the receiving hole 83, corresponding to the position of the axis of the contact support frame 8, there are two corresponding positioning protrusions 84. The moving contact 9 includes a strip-shaped first contact piece 91 and a second contact piece 92, wherein the first contact piece 91 and the second contact piece 92 are aligned and fitted together. There are two spring plates 10, and the spring plates 10 have an arc-shaped structure. The spring plates 10 have a protrusion... The side center has a positioning groove 101. The two ends of the spring sheet 10 are bent to form a positioning fold 103. The two spring sheets 10 are respectively fastened to both sides of the moving contact 9, and the bow-shaped structure at the end of the spring sheet 10 is fastened to the end of the moving contact 9 in the length direction. The two spring sheets 10 and the moving contact 9 are installed together in the receiving hole 83, and the positioning protrusion 84 is snapped into the positioning groove 101. The two spring sheets 10 are used to exert the elastic force of the first contact sheet 91 and the second contact sheet 92 to press against each other and to position the first contact sheet 91 and the second contact sheet 92.

[0046] In this embodiment, the spring sheet 10 is made of a material with good elasticity. The main body of the spring sheet 10 is arc-shaped. The front side of the spring sheet 10 faces the movable contact plate, and the back side of the middle of the spring sheet 10 is recessed inward to form a positioning groove 101. The extension body 102 is located between the positioning groove 101 and both ends. The main elastic force of the spring sheet 10 is provided by the extension body 102. At the connection between the extension body 102 and the positioning fold 103, there is also a short-length curved structure that protrudes towards the back plate of the spring sheet 10. This short-length curved structure with a small radius of curvature mainly provides elastic force to the positioning fold 103.

[0047] The spring plate 10 has two main functions. First, the spring plate 10, through the positioning fold 103, secures the movable contact within the spring plate 10, meaning the movable contact will not move along its length relative to the spring plate 10. In the contact support frame 8, the spring plate 10 and the movable contact are positioned in the height direction by the inner wall of the receiving hole 83, and the positioning groove 101 engages with the positioning protrusion 84. Therefore, the movable contact is accurately positioned by the limiting effect of the spring plate 10. Second, the spring plate 10 can drive the first contact 91 and the second contact 92 to engage, ensuring that the first contact 91 and the second contact 92 maintain a consistent engagement tendency.

[0048] Specifically, the first contact piece 91 has a mounting protrusion 911 on the side facing the second contact piece 92, and the second contact piece 92 has a mounting cutout 921 on the side facing the first contact piece 91. The mounting cutout 921 and the mounting protrusion 911 are shaped to match. When the first contact piece 91 and the second contact piece 92 are in contact, the mounting protrusion 911 is embedded in the mounting cutout 921.

[0049] In the moving contact 9, when the first contact piece 91 and the second contact piece 92 are in contact with each other, the mounting protrusion 911 on the first contact piece 91 can be embedded in the mounting cutout 921 of the second contact piece 92, thereby positioning the first contact piece 91 and the second contact piece 92. During the switching of the disconnecting switch state, as the stationary contact 11 is inserted into the first contact piece 91 and the second contact piece 92, the first contact piece 91 and the second contact piece 92 open on the side away from the stationary contact 11. In addition, the first contact piece 91 forms a first chamfer 912 on the edge of the surface of the second contact piece 92 corresponding to the length direction of the surface of the first contact piece 91, and the second contact piece 92 forms a second chamfer 922 on the edge of the surface of the first contact piece 91 corresponding to the length direction of the surface of the first contact piece 91. When the first contact piece 91 and the second contact piece 92 are in contact, the first chamfer 912 and the second chamfer 922 combine to form a guide groove opened along the height direction of the moving contact 9. During the process of inserting the first contact piece 91 and the second contact piece 92, the stationary contact 11 can more smoothly separate the first contact piece 91 and the second contact piece 92 due to the guiding effect of the first chamfer 912 and the second chamfer 922.

[0050] like Figure 6As shown, the stationary contact assembly 4 includes a stationary contact 11 and a terminal 12, wherein the stationary contact 11 is mounted on the terminal 12. The stationary contact 11 has a conductive plate protruding from the body of the stationary contact assembly 4. The connection between the end face and the outer edge of the conductive plate forms a chamfer. When the moving contact assembly 3 and the stationary contact assembly 4 are closed, the conductive plate enters between the first contact piece 91 and the second contact piece 92 through the guide groove, and the first contact piece 91 and the second contact piece 92 are clamped on both sides of the conductive plate.

[0051] The housing of this disconnecting switch is divided into an upper housing assembly 6 and a lower housing assembly 5. Taking the lower housing assembly 5 as an example, ... Figure 7 As shown, the housing has a mounting groove for mounting the moving contact assembly 3. There are several stationary contact mounting positions 133 on both sides of the mounting groove. The stationary contact assembly 4 is installed in the stationary contact mounting position 133. When the disconnecting switch is in the closed state, the moving contact assembly 3 is connected to the stationary contact assemblies 4 on both sides.

[0052] In addition, during assembly, only four screws are needed to screw into screw holes 134 to secure the upper housing assembly 6 and the lower housing assembly 5, thus completing the assembly of the mechanism.

[0053] like Figure 8 As shown, the upper housing assembly 6 includes an upper housing 16, a cover 18, and a viewing window 19. The top surface of the upper housing 16 is hollowed out corresponding to the position of the stationary contact assembly 4. The upper viewing window 19 covers the hollowed-out area of ​​the upper housing 16, and the cover 18 covers the viewing window 19 and is hollowed out corresponding to the position of the viewing window 19.

[0054] like Figure 9 As shown, the base assembly 7 consists of a retaining plate 20 and a base 21, which allows the switch to be mounted on a guide rail.

[0055] See Figure 10 The handle 1 consists of a locking plate 22, a handle housing 23, and a rotating shaft 24. The lower part of the locking plate 22 has a hinged hook-like body, which can realize the padlock operation of the disconnect switch.

[0056] When the switch is in the off position, see Figure 11 Spring 14, in the illustrated position, pushes slider 15 to the right. The upper feature of slider 15 pushes lever 17, and the lower feature pushes moving contact assembly 3 to the illustrated position. See... Figure 12 At this time, the other end of the moving contact assembly 3 is in the state shown in the figure, and the moving contact 9 is disconnected from the stationary contact 11.

[0057] When operating the switch, rotating handle 1 causes lever 17 to rotate, which in turn pushes slider 15 to the left. Slider 15 then rotates moving contact assembly 3, compressing spring 14. The operation continues until... Figure 13 In the current position, spring 14 is compressed to its maximum compression stroke. See Figure 14At this point, the other end of the moving contact assembly 3 is in the state shown in the diagram, and the moving contact 9 begins to move towards the stationary contact 11. Continuing to rotate the lever 17, after the spring 14 has completed its maximum compression stroke, the spring 14 begins to release, pushing the slider 15 to move rapidly to the left. The third actuating protrusion 152 below the slider 15 pushes the moving contact assembly 3 to rotate rapidly. The moving contact assembly 3 then causes the moving contact 9 to quickly close with the stationary contact 11.

[0058] After closing, see Figure 15 Spring 14, in the illustrated position, pushes slider 15 to the left. The upper feature of slider 15 pushes lever 17, and the lower feature pushes moving contact assembly 3 to the illustrated position. See... Figure 16 At this time, the other end of the moving contact assembly 3 is in the state shown in the figure, and the moving contact 9 and the stationary contact 11 are closed. At this time, the switch completes the closing operation.

[0059] When performing the tripping operation, rotate handle 1 in the opposite direction, and the internal operation of the switch will run in the opposite manner as described above.

[0060] In summary, disconnect switches have fewer parts, are simpler to assemble, and are smaller in size. Their safety performance meets national standards, and they offer improved installation convenience and cost-effectiveness compared to existing disconnect switch technologies.

[0061] The above content is only a preferred embodiment of the present invention. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the ideas of the present invention. As long as these changes do not depart from the concept of the present invention, they all fall within the protection scope of this patent.

Claims

1. A disconnecting switch, characterized in that: The device includes a handle, a housing, a moving contact assembly, and a stationary contact assembly. The moving contact assembly is rotatably mounted inside the housing, and the stationary contact assembly is positioned adjacent to the moving contact assembly. A V-shaped spring receiving groove is provided inside the housing near the first end of the moving contact assembly. The housing also includes a lever, a spring, and a slider. The spring is placed in the spring receiving groove, with its first end abutting the bottom of the groove and its second end connected to the slider. The handle is connected to the lever, which is rotatably mounted on the housing. The slider has a first actuating protrusion and a third actuating protrusion. The lever is connected to the first actuating protrusion. The first end of the moving contact assembly has a second actuating protrusion, and the slider is connected to the second actuating protrusion via the third actuating protrusion. In the separated state, the spring rests against one side wall of the spring receiving groove, and the moving contact assembly and the stationary contact assembly are separated. Rotating the handle and using the lever to move the slider horizontally drives the spring to rotate and compress around the first end of the spring. At the same time, the slider drives the moving contact assembly to rotate through the second actuating protrusion. When the spring changes from compression to a rebound state and finally rests against the other side wall of the spring receiving groove, the moving contact assembly and the stationary contact assembly come into contact, so that the disconnecting switch is in the closed state.

2. The disconnecting switch according to claim 1, characterized in that: There are two sets of springs and spring receiving slots, and the two sets of spring receiving slots are arranged symmetrically with the axis of the moving contact assembly as the center.

3. The disconnecting switch according to claim 1, characterized in that: The bottom of the spring receiving groove has a spring positioning protrusion for positioning the spring and preventing the first end of the spring from moving. The first end of the spring is fitted into the spring positioning protrusion.

4. The disconnecting switch according to claim 1, characterized in that: The housing has a mounting groove for installing the moving contact assembly. There are several stationary contact mounting positions on both sides of the mounting groove. The stationary contact assembly is installed in the stationary contact mounting position. When the disconnecting switch is in the closed state, the moving contact assembly is connected to the stationary contact assemblies on both sides.

5. The disconnecting switch according to claim 4, characterized in that: The disconnecting switch also includes a contact support frame. The main body of the contact support frame is cylindrical, and several receiving holes are opened in the middle of the contact support frame. A shoulder is formed between two adjacent receiving holes, and an annular groove is opened on the shoulder. The mounting groove has multiple annular guide structures, and a clearance groove is provided between two adjacent guide structures. When the moving contact assembly is installed in the mounting groove, the guide structure is engaged in the annular groove on the outer ring surface of the shoulder.

6. The disconnecting switch according to any one of claims 1-5, characterized in that: The moving contact assembly includes a contact support frame, a moving contact, and spring sheets. The main body of the contact support frame has a circular cross-section and a radially opened receiving hole. Inside the receiving hole, there are two corresponding positioning protrusions at positions corresponding to the axis of the contact support frame. The moving contact includes a long strip-shaped first contact piece and a second contact piece, wherein the first contact piece and the second contact piece are aligned and fitted together. There are two spring sheets, each with an arc-shaped structure. The spring sheet has a positioning groove in the middle of one of its protruding sides, and both ends of the spring sheet are bent to form positioning folds. The two spring sheets are respectively fastened to both sides of the moving contact, and the arc-shaped structure at the end of the spring sheet is fastened to the end of the moving contact in the length direction. The two spring sheets and the moving contact are installed together in the receiving hole, and the positioning protrusions are engaged in the positioning grooves. The two spring plates are used to apply elastic force to the first and second contact plates to press against each other and to position the first and second contact plates.

7. The disconnecting switch according to claim 6, characterized in that: The first contact piece has a mounting protrusion on the side facing the second contact piece, and the second contact piece has a mounting cutout on the side facing the first contact piece. The mounting cutout and the mounting protrusion are shaped to match. When the first contact piece and the second contact piece are attached, the mounting protrusion is embedded into the mounting cutout.

8. The disconnecting switch according to claim 6, characterized in that: The first contact piece forms a first chamfer along the length of one side surface of the second contact piece, and the second contact piece forms a second chamfer along the length of one side surface of the first contact piece. When the first contact piece and the second contact piece are attached, the first chamfer and the second chamfer combine to form a guide groove opened along the height direction of the moving contact.

9. The disconnecting switch according to claim 8, characterized in that: The stationary contact assembly includes a stationary contact and a terminal, wherein the stationary contact is mounted on the terminal and has a conductive plate protruding from the main body of the stationary contact assembly. The connection between the end face and the outer edge of the conductive plate forms a chamfer. When the moving contact assembly and the stationary contact assembly are closed, the conductive plate enters between the first contact piece and the second contact piece through the guide groove, and the first contact piece and the second contact piece are clamped on both sides of the conductive plate.

10. The disconnecting switch according to claim 1, characterized in that: The housing includes an upper housing assembly and a lower housing assembly. The upper housing assembly further includes an upper housing, a cover, and a viewing window. The top surface of the upper housing is hollowed out corresponding to the position of the stationary contact assembly. The upper viewing window covers the hollowed-out area of ​​the upper housing. The cover covers the viewing window and is hollowed out corresponding to the position of the viewing window.

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