An isolating switch with independently deflectable moving contact blade
By designing an isolated switch that can be independently offset by the dynamic touchpad, and using a combination of dynamic touchpad stacking and valley peak structure, the problem of poor performance of the isolating switch in a high current environment is solved, and lower contact resistance and higher conductivity efficiency are achieved.
Patent Information
- Application Number
- CN202520310943.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2035-02-26
AI Technical Summary
The existing isolating switches have poor performance in high current working environments, mainly due to the reduced contact area of dynamic and static contacts and arc ablation, resulting in rough surface and increased contact resistance, which in turn causes power loss and heating.
A disconnector with the dynamic touch blade can be independently offset is designed, and the stacking arrangement of the first and second of the moving touch blade is adopted. Combined with the synergistic effect of the connecting rod and the torsion spring, the surface of the moving touch blade forms a valley structure, the torsion spring provides elastic buffering, and the limiting member is used to accurately control contact displacement.
Through the combination of the moving contactor and the peak structure, the position deviation is effectively compensated, the contact area is increased, the contact resistance is reduced, the power loss and heating phenomenon are reduced, and the conductivity and stability of the isolating switch are improved.
Smart Images
Figure CN222734879U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of isolating switches, in particular to an isolating switch with a movable contact knife capable of independent displacement. Background Art
[0002] The isolating switch is a switching device that can close, carry and disconnect current under normal working conditions of the circuit. It is usually used in the switch cabinet for the purpose of connecting and isolating the incoming busbar and grounding the feeding device. It has three working positions: closing, isolating and grounding.
[0003] Conventional disconnectors use a single-piece moving contact. When a small current is converted to a large current, the current carrying capacity is increased by thickening the contact, but the effect is not good. The first reason is that although the moving contact is thickened, the contact area of the moving and static contacts is not effectively increased when the switch is closed. This is because the limitations of the processing technology cannot ensure the flatness of the contact surface, resulting in a certain connection gap between the moving contact and the conductor, reducing the actual contact surface and weakening the current carrying capacity; second, after the opening and closing operations, the contact surface of the moving and static contacts is arc-eroded. When the switch is closed again, the resistance becomes larger and the temperature rise is too high. Arc erosion will change the surface state of the moving and static contacts, making the contact surface rough and uneven, and even producing some protrusions or depressions, which greatly reduces the effective contact area. Continuous high temperature may also cause thermal deformation of the contacts, further deteriorating the contact condition, increasing the contact resistance, and forming a vicious circle. Summary of the invention
[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the utility model is to provide a heat recovery and reuse system, method and electronic equipment to improve the performance of the isolating switch in a high current working environment.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] A disconnect switch with an independently displaceable moving contact blade comprises a box body, wherein a switch, a moving contact blade assembly, a connecting rod, a torsion spring and a stationary contact are arranged in the box body, wherein the moving contact blade assembly comprises a moving contact blade 1 and a moving contact blade 2, wherein the moving contact blade 1 and the moving contact blade 2 are stacked, wherein the connecting rod is used to link the switch with the moving contact blade assembly, wherein the torsion spring cooperates with the connecting rod to constrain the relative movement and the displacement angle of the moving contact blade 1 and the moving contact blade 2, and when the switch is in a closed state and is subjected to a driving force, the connecting rod pushes the moving contact blade assembly to move toward the stationary contact, and a limiting member is further provided in the box body at a position corresponding to the stationary contact facing away from the moving contact blade assembly, wherein the limiting member is used to limit the displacement offset when the stationary contact contacts the moving contact blade assembly.
[0007] In some embodiments of the utility model, the movable contact knife 1 and the movable contact knife 2 both have a through hole 1 and a through hole 2 which are axially penetrated when viewed from above, and a fixed shaft is formed on the box body corresponding to the through hole 2, and the fixed shaft is rotatably connected to the through hole 2, and the two ends of the connecting rod are respectively rotatably connected to the switch and the through hole 1.
[0008] In some embodiments of the utility model, a valley-peak structure is formed on the surface of the movable contact blade one and the movable contact blade two, and the valley-peak structure includes a valley groove portion and a peak convex portion, and the positions of the valley groove portion and the peak convex portion on the surfaces of the movable contact blade one and the movable contact blade two are staggered with each other; the torsion spring is composed of a rotating portion, a closing portion and two contact heads, and the two contact heads respectively correspond to the valley-peak structures on the surfaces of the movable contact blade one and the movable contact blade two, the rotating portion is wound around the rod body of the connecting rod, and the closing portion abuts against the surfaces of the movable contact blade one and the movable contact blade two.
[0009] In some embodiments of the present invention, the aperture size of the second through hole is larger than the diameter size of the fixed shaft.
[0010] In some embodiments of the present invention, the through hole 2 is located at the same end of the movable contact knife 1 and the movable contact knife 2, the other end of the movable contact knife 1 and the movable contact knife 2 is a movable contact surface, and the through hole 1 is closer to the movable contact surface than the through hole 2.
[0011] In some embodiments of the present invention, the movable contact blade 1 and the movable contact blade 2 are both formed with a convex point 1 on both sides corresponding to the closed portion.
[0012] In some embodiments of the utility model, a protrusion 2 is formed on the surface of the movable contact blade 1 and the movable contact blade 2 toward the static contact, a U-shaped stopper is formed on the box body corresponding to the direction of the protrusion 2, and a spring is arranged between the opening of the U-shaped stopper and the protrusion 2.
[0013] In some embodiments of the present invention, the static contact has an L-shaped structure, and a portion of the box body corresponding to the static contact forms a limited position channel.
[0014] In some embodiments of the present utility model, a stationary contact protrusion is formed on the surface of the stationary contact facing the movable contact blade assembly, and a limiting groove is formed on the surface of the stationary contact facing the limiting member.
[0015] In some embodiments of the present invention, the limiting member includes an arc-shaped spring piece, both sides of the arc-shaped spring piece are connected to a fixing plate, and the fixing plate is connected to the box body through screws.
[0016] Beneficial effects of the utility model:
[0017] Compared with the traditional method, this technical solution adopts a large clearance design between the moving contact blade 1 and the moving contact blade 2 and the fixed shaft, so that there is space for displacement when closing the switch, which can effectively compensate for the position deviation of the moving and static contacts caused by processing technology or installation, and ensure that the moving contact blade and the static contact are in good contact; not only that, the valley-peak structure on the surface of the moving contact blade cooperates with the torsion spring to increase the contact area with the static contact and reduce the contact resistance; the staggered distribution of the valley-peak structure enables the moving contact blade to better fit the surface of the static contact, and the torsion spring provides elastic buffering while constraining the movement of the moving contact blade, reducing the impact force of closing the switch and preventing damage to components. When a large current passes through, the lower contact resistance can reduce power loss and heat generation, and improve the conductive efficiency and stability of the disconnector. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The utility model is further described below in conjunction with the accompanying drawings.
[0019] Figure 1 It is a three-dimensional view of the utility model;
[0020] Figure 2 It is a top view of the internal structure of the box body in the utility model;
[0021] Figure 3 It is a three-dimensional view of the internal structure of the box body in the utility model;
[0022] Figure 4 It is a three-dimensional view of the movable contact knife 1, the movable contact knife 2 and the torsion spring in the utility model;
[0023] Figure 5 It is a side view of the movable contact knife 1, the movable contact knife 2, the connecting rod and the torsion spring in the utility model;
[0024] Figure 6 It is a stereoscopic view of the movable touch knife 1 and the movable touch knife 2 in the utility model. Figure 1 ;
[0025] Figure 7 It is a stereoscopic view of the movable touch knife 1 and the movable touch knife 2 in the utility model. Figure 2 ;
[0026] Figure 8 It is a stereoscopic view of the static contact in the utility model. Figure 1 ;
[0027] Fig. 9 It is a stereoscopic view of the static contact in the utility model. Figure 2 ;
[0028] Fig.10 It is a three-dimensional view of the limiting member in the utility model.
[0029] In the figure: 1. box body; 11. fixed shaft; 12. U-shaped stopper; 13. limit channel; 2. switch; 3. moving contact knife 1; 4. moving contact knife 2; 41. through hole 1; 42. through hole 2; 43. convex point 1; 44. convex point 2; 45. valley part; 46. peak convex part; 5. connecting rod; 6. torsion spring; 61. contact head; 62. rotating part; 63. closing part; 7. spring; 8. static contact; 81. static contact convex block; 82. limit groove; 9. limit member; 91. arc-shaped spring piece; 92. fixing plate; 93. screw. DETAILED DESCRIPTION
[0030] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] like Figure 1 , Figure 2 , Figure 3 As shown, an isolating switch with an independently displaceable moving contact blade comprises a box body 1, in which a switch 2, a moving contact blade assembly, a connecting rod 5, a torsion spring 6 and a stationary contact 8 are arranged, the moving contact blade assembly comprises a moving contact blade 1 3 and a moving contact blade 2 4, the moving contact blade 1 3 and the moving contact blade 2 4 are stacked, the connecting rod 5 is used to link the switch 2 with the moving contact blade assembly, the torsion spring 6 cooperates with the connecting rod 5 to constrain the relative movement and displacement angle of the moving contact blade 1 3 and the moving contact blade 2 4, in the closed state, after the switch 2 is driven by the driving force, the connecting rod 5 pushes the moving contact blade assembly to move toward the stationary contact 8, and a limiting member 9 is further arranged in the box body 1 at a position corresponding to the stationary contact 8 facing away from the moving contact blade assembly, the limiting member 9 is used to limit the displacement offset when the stationary contact 8 contacts the moving contact blade assembly.
[0032] The isolating switch contains various components through the box body 1, forming a compact isolating switch structure, which is easy to install and maintain. The coordinated layout of the switch 2, the moving contact blade assembly, the connecting rod 5 and the torsion spring 6 realizes the effective transmission of power and the precise control of the movement of the moving contact blade, ensuring that the isolating switch can reliably complete the opening and closing operations and meet the on-off requirements of the power system. When closing, the switch 2 is driven by the driving force and transmits the force to the moving contact blade assembly through the connecting rod 5. The two ends of the connecting rod 5 are respectively connected to the switch 2 and the through hole 1 41 that runs through the moving contact blade 1 3 and the moving contact blade 2 4. This rotating connection method makes the transmission of force smoother and can adapt to the angle change of the moving contact blade during the movement. The moving contact blade assembly moves toward the static contact 8 under the push of the connecting rod 5 to realize the closing action. When opening, the switch 2 is operated in the reverse direction, and the connecting rod 5 is pulled to make the moving contact blade assembly away from the static contact 8 to complete the opening.
[0033] It should be noted that switch 2 is a key component for controlling the action of the moving contact blade assembly. After receiving external operation instructions or electrical signals, it drives the connecting rod 5 to move, thereby realizing the opening and closing operations of the moving contact blade assembly and the static contact 8. It plays a key role in opening and closing the circuit in the power system and determines the working state switching of the isolating switch.
[0034] As an example, the moving contact blade assembly is composed of a stack of moving contact blades 1 3 and moving contact blades 2 4. This double moving contact blade design increases the contact redundancy and reliability with the static contact 8. During the closing process, the two work together to contact the static contact 8 and share the current conduction task. Compared with the single-piece moving contact blade design, it can better cope with high current conditions, reduce the current carrying pressure of a single moving contact blade, and reduce the risk of overheating and damage caused by excessive current carrying.
[0035] In some embodiments of the present invention, Figure 2 As shown, both the movable contact blade 1 3 and the movable contact blade 2 4 have a through hole 1 41 and a through hole 2 42 which are opened and penetrated in the axial direction when viewed from above. A fixed shaft 11 is formed at the box body 1 corresponding to the through hole 2 42. The fixed shaft 11 is rotationally connected to the through hole 2 42. The two ends of the connecting rod 5 are rotationally connected to the switch 2 and the through hole 1 41 respectively. This rotation connection mode enables the connecting rod 5 to adapt to the change of the motion trajectory of the movable contact blade assembly when transmitting the driving force of the switch 2, and convert the linear motion into the rotation and linear compound motion of the movable contact blade assembly, thereby ensuring the stability and effectiveness of power transmission and avoiding motion jamming or component damage caused by unreasonable connection mode.
[0036] In some embodiments of the present invention, Figure 4 , Figure 5 , Figure 7 As shown, the surfaces of the movable contact blade 1 3 and the movable contact blade 2 4 are both formed with valley-peak structures, which include valley grooves 45 and peak convex parts 46, and the positions of the valley grooves 45 and peak convex parts 46 on the surfaces of the movable contact blade 1 3 and the movable contact blade 2 4 are mutually displaced; the torsion spring 6 is composed of a rotating part 62, a closing part 63 and two contact heads 61, and the two contact heads 61 correspond to the valley-peak structures on the surfaces of the movable contact blade 1 3 and the movable contact blade 2 4, respectively, the rotating part 62 is wound around the rod body where the connecting rod 5 is inserted into the through hole 1 41, and the closing part 63 abuts against the surfaces of the movable contact blade 1 3 and the movable contact blade 2 4. It should be noted that the two contact heads 61 are in a disconnected state.
[0037] During the closing process, the moving contact blade 1 3 and the moving contact blade 2 4 are forced to move toward the static contact 8. When contacting the static contact 8, if the moving contact blade is subjected to uneven force, the moving contact blade can be fine-tuned on the valley-peak structure under the action of the torsion spring 6. For example, if one side is subjected to greater force, the moving contact blade will produce a slight displacement at the valley peak of that side, and the elastic force of the torsion spring 6 will prompt the moving contact blade on the other side to adjust accordingly, ensuring that the contact pressure between the two moving contact blades and the static contact 8 is evenly distributed, maintaining a stable contact state, and effectively avoiding arcing and heating problems caused by poor contact. The unique design of the valley-peak structure on the surface of the moving contact blade and the torsion spring 6 greatly improves the contact performance of the moving contact blade. The staggered distribution of the valley-peak structure enables the moving contact blade assembly to better fit the surface of the static contact 8 when in contact with the static contact 8, increasing the contact area and reducing the contact resistance. The contact head 61 of the torsion spring 6 corresponds to the valley-peak structure, and the closing portion 63 abuts against the surface of the moving contact blade. While restricting the relative movement and offset angle of the moving contact blade, it provides a moderate elastic buffer for the moving contact blade, reduces the impact force during closing, prevents the moving contact blade and the static contact 8 from being damaged due to collision, and extends the service life of the equipment.
[0038] In some embodiments of the present invention, Figure 7 As shown, the aperture size of the through hole 42 is larger than the diameter size of the fixed shaft 11. Since the aperture size of the through hole 42 is larger than the diameter of the fixed shaft 11, a large clearance fit is formed. This design provides sufficient offset space for the moving contact blade, effectively compensates for the position deviation of the moving and static contacts caused by processing errors or installation deviations, ensures that the moving contact blade and the static contact 8 can be in good contact under various working conditions, and improves the adaptability and reliability of the isolating switch. When the moving contact blade assembly approaches the static contact 8, if there is a slight offset in the position of the static contact 8 or the moving contact blade itself is tilted due to uneven force, the moving contact blade can rotate and offset a certain angle around the fixed shaft 11 by means of a large clearance fit, and automatically adjust the position, so that the contact between the moving contact blade and the static contact 8 is closer and more stable, thereby ensuring the stable transmission of current.
[0039] In some embodiments of the present invention, Figure 7 As shown, through hole 2 42 is located at the same end of moving contact blade 1 3 and moving contact blade 2 4, and the other end of moving contact blade 1 3 and moving contact blade 2 4 is a moving contact surface, and through hole 1 41 is closer to the moving contact surface than through hole 2 42. This means that when the switch is in the closed state, through hole 1 41 connected with connecting rod 5, moving contact blade and torsion spring 6 is on the side away from fixed shaft 11, so that the position where the moving contact surface contacts with static contact 8 when the switch is closed is the first force point, and the point where the fixed shaft 11 contacts with through hole 2 42 is the second force point, ensuring close contact and good pressure distribution between the moving and static contacts.
[0040] In some embodiments of the present invention, Figure 4 , Figure 5 , Figure 7As shown, both sides of the movable contact blade 1 3 and the movable contact blade 2 4 corresponding to the closed portion 63 are formed with protrusions 1 43. The protrusions 1 43 are closely matched with the contact head 61 and the closed portion 63 of the torsion spring 6. When the movable contact blade moves and is subjected to force, the protrusions 1 43 serve as support points and positioning points to limit unnecessary movement of the torsion spring 6. The protrusions 1 43 on both sides of the closed portion 63 corresponding to the movable contact blade enhance the positioning and connection stability between the torsion spring 6 and the movable contact blade, prevent the torsion spring 6 from being displaced or falling off during operation, ensure that the torsion spring 6 can continue to effectively play its restraining and buffering role, and ensure the reliability of the movement of the movable contact blade.
[0041] In some embodiments of the present invention, Figure 2 , Figure 3 , Figure 6 As shown, the surfaces of the moving contact blade 1 3 and the moving contact blade 2 4 are formed with a convex point 2 44 in the direction of the stationary contact 8, and the box body 1 is formed with a U-shaped stopper 12 in the direction corresponding to the convex point 2 44, and a spring 7 is arranged between the opening of the U-shaped stopper 12 and the convex point 2 44. For the convex point 2 44, when closing the switch, the moving contact blade first contacts the spring 7, and the spring 7 is compressed, absorbing part of the kinetic energy, slowing down the speed of the moving contact blade; after the closing is completed, the rebound force of the spring 7 and the gravity and contact force of the moving contact blade are balanced with each other, so that the moving contact blade maintains a relatively stable position at the stationary contact 8, thereby improving the contact reliability. The convex point 2 44 of the moving contact blade facing the stationary contact 8 cooperates with the U-shaped stopper 12 and the spring 7 of the box body 1, and plays a role of buffering and auxiliary positioning when closing the switch. The elastic force of the spring 7 can make the moving contact blade have a buffering process before contacting the stationary contact 8, reduce the collision force, and to a certain extent help the moving contact blade to maintain a stable position after closing the switch, reducing the poor contact phenomenon caused by external vibration and other factors.
[0042] In some embodiments of the present invention, Figure 2 As shown, the stationary contact 8 is in an L-shaped structure, and a portion of the box body 1 corresponding to the stationary contact 8 forms a limiting channel 13. The limiting channel 13 limits and guides the stationary contact 8, ensuring that the position of the stationary contact 8 in the box body 1 is stable, and preventing the stationary contact 8 from being displaced due to external force or vibration, thereby affecting the contact effect with the moving contact blade.
[0043] In some embodiments of the present invention, Figure 8 , Fig. 9 As shown, a stationary contact protrusion 81 is formed on the surface of the stationary contact 8 facing the moving contact blade assembly, and a limiting groove 82 is formed on the surface of the stationary contact 8 facing the limiting member 9. The L-shaped structure of the stationary contact 8 and the design of the stationary contact protrusion 81 on the surface increase the contact area and contact stability with the moving contact blade. The stationary contact protrusion 81 can fit tightly with the moving contact blade, further reducing the contact resistance and improving the current transmission efficiency.
[0044] In some embodiments of the present invention, Fig.10 As shown, the limiting member 9 includes an arc-shaped spring piece 91, and both sides of the arc-shaped spring piece 91 are connected to a fixing plate 92, and the fixing plate 92 is connected to the box body 1 through a screw 93. The limiting groove 82 on the surface of the static contact 8 cooperates with the arc-shaped spring piece 91 of the limiting member 9, and accurately limits the displacement offset when the moving contact knife contacts the static contact 8. When the moving contact knife has a tendency to excessively deviate due to force or other factors, the arc-shaped spring piece 91, supported by the fixing plate 92, interacts with the limiting groove 82 to effectively block and correct the displacement of the moving contact knife, ensuring that the contact between the moving contact knife and the static contact 8 is always within a reasonable range, preventing problems such as poor contact, arc generation or component damage caused by excessive offset, and ensuring the safe and stable operation of the disconnector.
[0045] In this solution, the movable contact blade 1 3 and the movable contact blade 2 4 cooperate with the large clearance of the fixed shaft 11, so that there is space for displacement when closing the switch, which can effectively compensate for the position deviation of the moving and static contacts caused by processing technology or installation, and ensure that the movable contact blade assembly is in good contact with the static contact 8. For example, in actual working conditions, even if the static contact 8 has a certain installation tilt or the movable contact blade itself has a slight deformation, the movable contact blade can maintain a stable contact state through offset adjustment, reducing the risk of failure caused by poor contact. In addition, the valley-peak structure on the surface of the movable contact blade cooperates with the torsion spring 6 to increase the contact area with the static contact 8 and reduce the contact resistance. The staggered distribution of the valley-peak structure enables the movable contact blade to better fit the surface of the static contact 8, and the torsion spring 6 provides elastic buffering while constraining the movement of the movable contact blade, reducing the impact force of closing the switch and preventing damage to components. When a large current passes through, the lower contact resistance can reduce power loss and heat generation, and improve the conductive efficiency and stability of the disconnector.
[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0047] The above contents are merely examples and explanations of the present utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.
Claims
1. An isolating switch with independently deflectable moving blade, comprising a box body, wherein a switch, a moving blade assembly, a connecting rod, a torsion spring and a stationary contact are arranged in the box body, characterized in that: The movable contact knife assembly includes a movable contact knife 1 and a movable contact knife 2, and the movable contact knife 1 and the movable contact knife 2 are stacked. The connecting rod is used to link the switch with the movable contact knife assembly. The torsion spring cooperates with the connecting rod to constrain the relative movement and offset angle of the movable contact knife 1 and the movable contact knife 2. When the switch is in a closed state and is subjected to a driving force, the connecting rod pushes the movable contact knife assembly toward the static contact. A limiting member is also provided in the box body at a position corresponding to the static contact facing away from the movable contact knife assembly. The limiting member is used to limit the displacement offset when the static contact contacts the movable contact knife assembly.
2. The isolating switch with independently deflectable movable contact blade according to claim 1, characterized in that: The movable contact knife 1 and the movable contact knife 2 both have a through hole 1 and a through hole 2 which are axially penetrated when viewed from above. The box body is formed with a fixed shaft corresponding to the through hole 2, and the fixed shaft is rotatably connected to the through hole 2. The two ends of the connecting rod are respectively rotatably connected to the switch and the through hole 1.
3. The isolating switch with independently deflectable movable contact blade according to claim 2, characterized in that: The surfaces of the movable contact blade one and the movable contact blade two are both formed with a valley-peak structure, and the valley-peak structure includes a valley groove portion and a peak convex portion, and the positions of the valley groove portion and the peak convex portion on the surfaces of the movable contact blade one and the movable contact blade two are staggered with each other; the torsion spring is composed of a rotating portion, a closing portion and two contact heads, and the two contact heads respectively correspond to the valley-peak structures on the surfaces of the movable contact blade one and the movable contact blade two, the rotating portion is wound around the rod body of the connecting rod, and the closing portion abuts against the surfaces of the movable contact blade one and the movable contact blade two.
4. The isolating switch with independently deflectable movable contact blade according to claim 2, characterized in that: The aperture size of the second through hole is larger than the diameter size of the fixed shaft.
5. The isolating switch with independently deflectable movable contact blade according to claim 2, characterized in that: The through hole 2 is located at the same end of the movable contact knife 1 and the movable contact knife 2, the other end of the movable contact knife 1 and the movable contact knife 2 is a movable contact surface, and the through hole 1 is closer to the movable contact surface than the through hole 2.
6. The isolating switch with independently deflectable movable contact blade according to claim 3, characterized in that: The movable contact blade 1 and the movable contact blade 2 are both formed with a convex point 1 on both sides corresponding to the closed part.
7. The isolating switch with independently deflectable movable contact blade according to claim 1, characterized in that: The surfaces of the movable contact blade 1 and the movable contact blade 2 are formed with a convex point 2 in the direction of the static contact, the box body is formed with a U-shaped stopper corresponding to the direction of the convex point 2, and a spring is arranged between the opening of the U-shaped stopper and the convex point 2.
8. The isolating switch with independently deflectable movable contact blade according to claim 1, characterized in that: The stationary contact has an L-shaped structure, and a portion of the box body corresponding to the stationary contact forms a limited position channel.
9. The isolating switch with independently deflectable movable contact blade according to claim 1, characterized in that: A stationary contact protrusion is formed on the surface of the stationary contact facing the movable contact blade assembly, and a limiting groove is formed on the surface of the stationary contact facing the limiting member.
10. The isolating switch with independently deflectable movable contact blade according to claim 1, characterized in that: The limiting member includes an arc-shaped spring piece, both sides of the arc-shaped spring piece are connected with a fixing plate, and the fixing plate is connected to the box body through screws.