Isolating switch
By introducing a limit structure into the disconnecting switch, the grounding component is ensured to open when the switch is closed, which solves the problem that the grounding component cannot open when the disconnecting switch is closed, thus improving the safety of the equipment and operators and extending the service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING SENHENG ELECTRICAL APPLIANCES
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-17
AI Technical Summary
When a disconnecting switch is closed, it cannot ensure that the grounding component is open, which may lead to a short circuit and endanger the safety of equipment and operators.
A disconnecting switch is designed, which includes a limiting structure comprising a first limiting plate, a second limiting plate, and a moving rod. The moving rod prevents the second limiting plate from rotating, and the first and second limiting plates are locked to each other to ensure that the grounding component is opened when closed, thus avoiding misoperation.
It effectively prevents the disconnecting switch and grounding components from closing simultaneously, ensuring the safety of operators and equipment and extending the service life of the equipment.
Smart Images
Figure CN224138083U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of disconnecting switches, and in particular to a disconnecting switch. Background Technology
[0002] Disconnecting switches are a type of electrical device used in daily life. They are mainly used for isolating power sources, switching operations, and connecting and controlling the flow of current. This device controls the opening and closing of moving contacts and stationary contacts to cut off or connect electrical paths. Disconnecting switches are usually used in conjunction with grounding components. When the disconnecting switch is closed, the grounding component is in the open state to protect the safety of operators and equipment.
[0003] In related technologies, a disconnecting switch includes a base, on which a first support column and a second support column are provided. A first knife holder and a second knife holder are respectively provided on the first support column and the second support column. A knife switch is rotatably connected to the first knife holder, and the second knife holder is for the knife switch to abut against. A rotating component is provided on the knife switch, and the rotating component is used to drive the knife switch to rotate.
[0004] Since disconnecting switches and grounding components are usually manually locked, it cannot be guaranteed that the grounding component will open when the disconnecting switch is closed or close when the disconnecting switch is open. This may result in the disconnecting switch and grounding component closing at the same time, which can easily lead to a short circuit and cause significant damage to the equipment. Utility Model Content
[0005] To address the issue that the grounding component cannot be guaranteed to open when the disconnecting switch is closed, this application provides a disconnecting switch.
[0006] This application provides a disconnecting switch, which adopts the following technical solution:
[0007] A disconnecting switch includes a base, on which a first support column and a second support column are provided. A first knife holder and a second knife holder are respectively provided on the first and second support columns. A knife switch is rotatably connected to the first knife holder, and the second knife holder is for the knife switch to abut against. A rotating assembly is provided on the knife switch for driving the knife switch to rotate. A first rotating shaft is rotatably connected to the base, and the rotating assembly is fixedly connected to the first rotating shaft. A limiting structure is provided on the base, comprising a first limiting plate, a second limiting plate, and a moving rod. The first limiting plate is disposed on the first rotating shaft, and the first limiting plate is rotatably connected to the base. The second rotating shaft has a second limiting plate mounted on it. The moving rod is slidably connected to the base and is used to block the rotation of the second limiting plate. Both the first and second limiting plates are located on the moving path of the moving rod. A grounding component is provided on the second rotating shaft. When the switch is in the closed state, the first limiting plate restricts the movement of the moving rod, the moving rod restricts the rotation of the second limiting plate, and the grounding component is in the open state. When the switch is in the open state, the moving rod can move towards the first limiting plate, the second limiting plate can rotate, and the grounding component is in the closed state.
[0008] By adopting the above technical solution, when the switch is in the closed state, the moving rod blocks the rotation of the second limit plate. Both the first and second limit plates are located on the moving path of the moving rod, so that the first limit plate blocks the movement of the moving rod, and the moving rod restricts the rotation of the second limit plate, thereby keeping the grounding component in the open state. The first limit plate, the moving rod, and the second limit plate are mutually locked to prevent operators from accidentally touching the grounding component and reduce the occurrence of the disconnecting switch and the grounding component being closed at the same time, further ensuring the safety of operators and equipment. When the switch is switched from the closed state to the open state, the moving rod moves towards the first limit plate, so that the moving rod no longer restricts the rotation of the second limit plate, and the grounding component is in the closed state. The grounding component can conduct the current to the ground, thereby preventing the operator from being injured when touching the disconnecting switch.
[0009] Optionally, the first limiting plate has a first inclined surface and a first arc surface, and the distance from the first arc surface to the first rotating shaft is greater than the distance from the first inclined surface to the first rotating shaft; when the switch is in the closed state, the moving rod abuts against the first arc surface, and the shortest distance between the first arc surface and the second limiting plate is equal to the length of the moving rod.
[0010] By adopting the above technical solution, when the switch is in the closed state, the moving rod abuts against the first arc surface, and the shortest distance between the first arc surface and the second limit plate is equal to the length of the moving rod, so that the moving rod and the second limit plate are in a fixed state, thereby locking the open state of the grounding component; when the switch is switched from the closed state to the open state, the distance from the first arc surface to the first rotating shaft is greater than the distance from the first inclined surface to the first rotating shaft, so that the first inclined surface provides space for the moving rod to move towards the first limit plate, and the moving rod can move towards the first limit plate, thereby unlocking the fixed state of the second limit plate, so that the second limit plate can rotate to realize the closing of the grounding component.
[0011] Optionally, the distance between the first arc surface and the first rotating shaft gradually increases along the direction of the switch opening, and the first arc surface is used to drive the moving rod to move towards the second limiting plate.
[0012] By adopting the above technical solution, when the switch switches from the closed state to the open state, the distance between the first arc surface and the first rotating shaft gradually increases along the opening direction of the switch, so that the operator can realize the first arc surface driving the moving rod to move towards the second limit plate without sliding the moving rod.
[0013] Optionally, the first limiting plate is provided with a baffle, which is used to restrict the rotation of the first rotating shaft. When the switch is in the closed state, the baffle abuts against the moving rod.
[0014] By adopting the above technical solution, when the switch is in the closed state, the baffle abuts against the moving rod and restricts the rotation of the first rotating shaft, so that the first rotating shaft cannot continue to rotate in the rotation direction of the switch being closed, and the switch will not continue to move towards the second support column of the second switch seat, reducing the possibility of damage to the switch and the second switch seat due to compression, thereby extending the service life of the equipment.
[0015] Optionally, the second limiting plate is provided with a protrusion for limiting the rotation of the second limiting plate, and the second limiting plate is provided with a second arc surface. The distance between the second arc surface and the first rotating shaft gradually increases along the direction of the grounding component opening. The second arc surface is used to drive the moving rod to move towards the direction of the first limiting plate.
[0016] By adopting the above technical solution, when the switch is in the closed state, the distance between the second arc surface and the first rotating shaft gradually increases along the direction of the grounding component opening. The second arc surface can drive the moving rod to move towards the first limit plate, so that by rotating the second rotating shaft, the moving rod can be pushed towards the first limit plate, thereby saving the operator the step of sliding the moving rod and making it convenient for people to control the closing and opening of the grounding component.
[0017] Optionally, the limiting structure is provided in two sets, the two sets of limiting structures are respectively located on opposite sides of the base, and the two sets of limiting structures are respectively located on both sides of the first rotating shaft. A third rotating shaft is rotatably connected to the base, the second limiting plate is disposed on the third rotating shaft, and multiple sets of grounding components are provided, the grounding components are disposed on the third rotating shaft.
[0018] By adopting the above technical solution, with the two sets of limiting structures located on opposite sides of the base and on both sides of the first rotating shaft, both the first support column and the second support column can be grounded, thereby ensuring the safety of operators and equipment.
[0019] Optionally, both ends of the first rotating shaft, both ends of the second rotating shaft, and both ends of the third rotating shaft protrude from the surface of the base.
[0020] By adopting the above technical solution, with both ends of the first rotating shaft, both ends of the second rotating shaft, and both ends of the third rotating shaft protruding from the surface of the base, people can control the two sets of grounding components from one side of the base. People do not need to control the corresponding grounding components on opposite sides of the base separately, which provides convenience for people's operation.
[0021] Optionally, the base has a fixing hole, the second rotating shaft passes through the fixing hole and rotates, and there is a space between the second limiting plate and the surface of the base with the fixing hole.
[0022] By adopting the above technical solution, there is a space between the surface of the second limiting plate and the base with the fixing hole, so that the surface of the second limiting plate near the second support column does not abut against the base, the friction between the second limiting plate and the base is reduced, making it easier and more convenient to rotate the second limiting plate.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. When the switch is in the closed state, the moving rod blocks the rotation of the second limit plate. Both the first and second limit plates are located on the moving path of the moving rod, so that the first limit plate blocks the movement of the moving rod, and the moving rod restricts the rotation of the second limit plate, thereby keeping the grounding component in the open state. The first limit plate, the moving rod, and the second limit plate are mutually locked to prevent the operator from accidentally touching the grounding component and reduce the occurrence of the disconnecting switch and the grounding component being closed at the same time, further ensuring the safety of the operator and equipment. When the switch is switched from the closed state to the open state, the moving rod moves towards the first limit plate, so that the moving rod no longer restricts the rotation of the second limit plate, and the grounding component is in the closed state. The grounding component can conduct the current to the ground, thereby preventing the operator from being injured when touching the disconnecting switch.
[0025] 2. When the switch is in the closed state, the baffle abuts against the moving rod and restricts the rotation of the first rotating shaft, so that the first rotating shaft cannot continue to rotate in the rotation direction of the switch being closed. The switch will not continue to move towards the second support column of the second switch seat, reducing the possibility of damage to the switch and the second switch seat due to compression, thereby extending the service life of the equipment. Attached Figure Description
[0026] Figure 1 This is a structural schematic diagram of an embodiment of this application;
[0027] Figure 2 This is a partial structural diagram highlighting the limiting structure in the embodiments of this application.
[0028] Reference numerals: 1. Base; 11. First support column; 111. First knife holder; 12. Second support column; 121. Second knife holder; 13. Knife gate; 131. Rotating assembly; 14. First rotating shaft; 15. Second rotating shaft; 16. Third rotating shaft; 17. Fixing hole; 18. Grounding assembly; 19. Fixing plate; 191. Through hole; 2. Limiting structure; 21. First limiting plate; 211. Baffle; 212. First inclined surface; 213. First arc surface; 22. Second limiting plate; 221. Second inclined surface; 222. Second arc surface; 223. Protrusion; 23. Moving rod. Detailed Implementation
[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0030] This embodiment discloses a disconnecting switch. (Refer to...) Figure 1 A disconnecting switch includes a base 1. A first support column 11 and a second support column 12 are fixedly connected to the base 1, and multiple first support columns 11 and 12 are provided. A first knife holder 111 is fixedly connected to the first support column 11, and a second knife holder 121 is fixedly connected to the second support column 12. A knife switch 13 is rotatably connected to each first knife holder 111, and the second knife holder 121 provides contact for the corresponding knife switch 13. When the knife switch 13 contacts the second knife holder 121, the disconnecting switch is in the closed state. A rotating assembly 131 is fixedly connected to each knife switch 13, and the rotating assembly 131 drives the knife switch 13 to rotate. A first rotating shaft 14 is rotatably connected to the base 1, and the rotating assemblies 131 are all fixedly connected to the first rotating shaft 14. When the first rotating shaft 14 rotates, all the knife switches 13 rotate together.
[0031] Reference Figure 1A second rotating shaft 15 and a third rotating shaft 16 are rotatably connected to the base 1. The second rotating shaft 15 is located on the side of the second support column 12 away from the first rotating shaft 14, and the third rotating shaft 16 is located on the side of the first support column 11 away from the first rotating shaft 14. Both ends of the first rotating shaft 14, both ends of the second rotating shaft 15, and both ends of the third rotating shaft 16 protrude from the surface of the base 1. The base 1 has multiple fixing holes 17, which are respectively passed through by the first rotating shaft 14, the second rotating shaft 15, and the third rotating shaft 16. Multiple grounding components 18 are fixedly connected to both the second rotating shaft 15 and the third rotating shaft 16.
[0032] Reference Figure 1 and Figure 2 A limiting structure 2 is fixedly connected to the base 1. The limiting structure 2 includes a first limiting plate 21, a second limiting plate 22, and a moving rod 23. Two sets of limiting structures 2 are provided, located on opposite sides of the base 1 and at opposite ends of the first rotating shaft 14. One set of limiting structures 2 controls the rotation of the second rotating shaft 15 via the first rotating shaft 14, i.e., one set of limiting structures 2 controls the grounding component 18 of the second rotating shaft 15; the other set of limiting structures 2 controls the rotation of the third rotating shaft 16 via the first rotating shaft 14, i.e., the other set of limiting structures 2 controls the grounding component 18 of the third rotating shaft 16. There is a space between the first limiting plate 21 and the surface of the base 1 with the fixing hole 17, and there is a space between the second limiting plate 22 and the surface of the base 1 with the fixing hole 17.
[0033] Reference Figure 1 and Figure 2 Two first limiting plates 21 are provided, each fixedly connected to both ends of the first rotating shaft 14. Two second limiting plates 22 are provided, each fixedly connected to the second rotating shaft 15 and the third rotating shaft 16, respectively, and fitted onto the second rotating shaft 15 and the third rotating shaft 16. Two fixing plates 19 are fixedly connected to the base 1. Each fixing plate 19 has a through hole 191 through which a moving rod 23 passes. The moving rod 23 is slidably connected within the through hole 191, thus slidably connecting the moving rod 23 between the first limiting plate 21 and the second limiting plate 22. The moving rod 23 is used to prevent the second limiting plate 22 from rotating. Both the first limiting plate 21 and the second limiting plate 22 are located on the moving path of the moving rod 23.
[0034] Reference Figure 1 and Figure 2A first inclined surface 212 is provided on the outer surface of the first limiting plate 21. When the switch 13 is in the closed state, the distance from the first inclined surface 212 to the second limiting plate 22 gradually decreases along the direction of the second switch seat 121 towards the second support column 12. The operator rotates the first limiting plate 21 so that the first inclined surface 212 rotates towards the moving rod 23, and the moving rod 23 can move towards the first limiting plate 21.
[0035] Reference Figure 2 A first arc surface 213 is formed on the outer surface of the first limiting plate 21. The distance between the first arc surface 213 and the first rotating shaft 14 gradually increases along the opening direction of the switch 13. The first arc surface 213 is used to drive the moving rod 23 to move towards the second limiting plate 22. The distance from the first arc surface 213 to the first rotating shaft 14 is greater than the distance from the first inclined surface 212 to the first rotating shaft 14. A baffle 211 is fixedly connected to the first limiting plate 21. The baffle 211 is located on the moving path of the moving rod 23 and is located on the side of the first arc surface 213 away from the first inclined surface 212.
[0036] Reference Figure 1 and Figure 2 A protrusion 223 is integrally formed on the outer surface of the second limiting plate 22, and the base 1 is located on the rotation path of the protrusion 223. When the grounding component 18 is tripped, the protrusion 223 abuts against the base 1, thereby restricting the rotation of the second limiting plate 22. A second inclined surface 221 is formed on the outer surface of the second limiting plate 22. When the switch 13 is in the closed state, the distance from the second inclined surface 221 to the first rotating shaft 14 gradually increases along the direction of the switch 13 toward the first rotating shaft 14. There is a gap between the second inclined surface 221 and the base 1 to facilitate the rotation of the second rotating shaft 15.
[0037] The second limiting plate 22 has a second arc surface 222. The distance between the second arc surface 222 and the first rotating shaft 14 gradually increases along the direction of the grounding component 18 opening. The second arc surface 222 is used to drive the moving rod 23 to move closer to the first limiting plate 21. When the operator rotates the second rotating shaft 15, that is, when the grounding component 18 is closed, the second inclined surface 221 pushes the moving rod 23 to move closer to the first limiting plate 21. The protrusion 223 does not abut against the base 1, and there is still a gap between the second inclined surface 221 and the base 1. (Refer to...) Figure 1 and Figure 2When the switch 13 switches from the open state to the closed state, the baffle 211 abuts against the moving rod 23 and the baffle 211 restricts the first rotating shaft 14 from continuing to rotate in the direction of the switch 13 closing. The moving rod 23 abuts against the first arc surface 213, and the first arc surface 213 drives the moving rod 23 to move towards the second limiting plate 22 until the shortest distance between the first arc surface 213 and the second limiting plate 22 is equal to the length of the moving rod 23. At this time, the first arc surface 213 and the second limiting plate 22 fix the moving rod 23, and the moving rod 23 restricts the rotation of the second limiting plate 22. Grounding component 1 8. Achieve tripping; When the switch 13 switches from the closed state to the open state, the first inclined surface 212 rotates toward the moving rod 23, and the moving rod 23 can move toward the first limit plate 21. The operator rotates the second rotating shaft 15 in the direction of opening the switch 13, and rotates the third rotating shaft 16 on the same side in the direction of closing the switch 13. The second inclined surface 221 drives the moving rod 23 to move toward the first limit plate 21. The end of the moving rod 23 near the first limit plate 21 abuts against the first inclined surface 212, and all grounding components 18 achieve closing.
[0038] The implementation principle of a disconnecting switch in this application embodiment is as follows: When the disconnecting switch is in the open state, the operator drives the knife switch 13 to abut against the second knife seat 121, and the rotating component 131 drives the first rotating shaft 14 to rotate in the rotation direction of the knife switch 13 when it is closed. The first rotating shaft 14 drives the first limiting plate 21 to rotate, and the first arc surface 213 drives the moving rod 23 to move towards the second limiting plate 22 until the baffle 211 abuts against the moving rod 23. At this time, the moving rod 23 abuts against the second limiting plate 22, and the moving rod 23 restricts the second rotating shaft 15 from rotating, so that the grounding component 18 is in the open state.
[0039] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0040] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.
Claims
1. A disconnecting switch, comprising a base (1), wherein a first support column (11) and a second support column (12) are provided on the base (1), a first knife holder (111) and a second knife holder (121) are respectively provided on the first support column (111) and the second support column (12), a knife switch (13) is rotatably connected to the first knife holder (111), the second knife holder (121) is for the knife switch (13) to abut against, and a rotating assembly (131) is provided on the knife switch (13), the rotating assembly (131) being used to drive the knife switch (13) to rotate, characterized in that: A first rotating shaft (14) is rotatably connected to the base (1), and a rotating assembly (131) is fixedly connected to the first rotating shaft (14). A limiting structure (2) is provided on the base (1). The limiting structure (2) includes a first limiting plate (21), a second limiting plate (22), and a moving rod (23). The first limiting plate (21) is disposed on the first rotating shaft (14), and a second rotating shaft (15) is rotatably connected to the base (1). The second limiting plate (22) is disposed on the second rotating shaft (15), and the moving rod (23) is slidably connected to the base (1). The moving rod (23) is used to block the rotation of the second limiting plate (22). The first limiting plate (21) and the second limiting plate (22) are both located on the moving path of the moving rod (23), and the second rotating shaft (15) is provided with a grounding component (18); when the switch (13) is in the closed state, the first limiting plate (21) restricts the movement of the moving rod (23), the moving rod (23) restricts the rotation of the second limiting plate (22), and the grounding component (18) is in the open state; when the switch (13) is in the open state, the moving rod (23) can move towards the first limiting plate (21), the second limiting plate (22) can rotate, and the grounding component (18) is in the closed state.
2. The disconnecting switch according to claim 1, characterized in that: The first limiting plate (21) has a first inclined surface (212) and a first arc surface (213). The distance from the first arc surface (213) to the first rotating shaft (14) is greater than the distance from the first inclined surface (212) to the first rotating shaft (14). When the switch (13) is in the closed state, the moving rod (23) abuts against the first arc surface (213), and the shortest distance between the first arc surface (213) and the second limiting plate (22) is equal to the length of the moving rod (23).
3. A disconnector according to claim 2, characterised in that: The distance between the first arc surface (213) and the first rotating shaft (14) gradually increases along the direction of the opening of the switch (13). The first arc surface (213) is used to drive the moving rod (23) to move towards the second limiting plate (22).
4. The disconnector according to claim 1, characterized in that: The first limiting plate (21) is provided with a baffle (211), which is used to restrict the rotation of the first rotating shaft (14). When the switch (13) is in the closed state, the baffle (211) abuts against the moving rod (23).
5. An isolating switch according to claim 1, characterized in that: The second limiting plate (22) is provided with a protrusion (223) for limiting the rotation of the second limiting plate (22). The second limiting plate (22) is provided with a second arc surface (222). The distance between the second arc surface (222) and the first rotating shaft (14) gradually increases along the direction of the grounding component (18) opening. The second arc surface (222) is used to drive the moving rod (23) to move towards the first limiting plate (21).
6. An isolating switch according to claim 1, characterized in that: The limiting structure (2) is provided in two sets, and the two sets of the limiting structure (2) are respectively located on opposite sides of the base (1), and the two sets of the limiting structure (2) are respectively located on both sides of the first rotating shaft (14). The base (1) is rotatably connected to the third rotating shaft (16), and the second limiting plate (22) is provided on the third rotating shaft (16). The grounding component (18) is provided in multiple sets, and the grounding component (18) is provided on the third rotating shaft (16).
7. An isolating switch according to claim 6, characterised in that: Both ends of the first rotating shaft (14), both ends of the second rotating shaft (15), and both ends of the third rotating shaft (16) protrude from the surface of the base (1).
8. The disconnector according to claim 1, characterized in that: The base (1) has a fixing hole (17) and the second rotating shaft (15) rotates through the fixing hole (17). There is a space between the second limiting plate (22) and the surface of the base (1) with the fixing hole (17).