Modular self-protecting switch

Abstract

The application relates to the technical field of switches, and discloses a modular self-protection switch, which comprises an electric switch body, first and second connecting modules connected to the two sides of the electric switch body respectively, a switching assembly and a main control assembly arranged in the electric switch body, the switching assembly is used for replacing a main circuit with a secondary circuit, and comprises a rotating mechanism and a limiting mechanism; when the rotating mechanism rotates to a first position, the rotating mechanism is locked by the limiting mechanism, at this time, the main circuit is in a conduction state and the secondary circuit is in a cut-off state; when the rotating mechanism rotates to a second position, the main circuit is in a cut-off state and the secondary circuit is in a conduction state; and the main control assembly is used for synchronously cutting off power supply of the main circuit and the secondary circuit; in the application, when the main circuit is overloaded, the main circuit is replaced with the secondary circuit for power supply by the rotating mechanism, and the rotating mechanism is locked in a state of main-circuit power supply or secondary-circuit power supply by the limiting mechanism, so that the stability of the power supply state is ensured; in addition, the main control assembly can be used for quickly cutting off power supply of the two circuits.

Description

Technical Field

[0001] This invention relates to the field of switch technology, and in particular to a modular self-protection switch. Background Technology

[0002] Electrical switches can interrupt circuits under load, have self-extinguishing arc-extinguishing capabilities, and feature arc-extinguishing enclosures in their structure. They also offer overload protection. Combinations of electrical switches and fuses can automatically trip, possessing some of the functions of circuit breakers. Circuit breakers, on the other hand, can provide short-circuit protection, overload protection, and leakage protection. The fundamental difference between electrical switches and circuit breakers lies in their breaking capacity. Circuit breakers can have very high breaking capacity during manufacturing, but electrical switches have limited breaking capacity. Electrical switches are typically protected by fuses, offering only instantaneous tripping and overcurrent protection. Electrical switches are mainly used in substations and small-capacity distribution transformers, while circuit breakers are primarily used in motors that frequently interrupt loads, large-capacity transformers, and substations.

[0003] The electrical switch adopts a modular design, which has the advantages of being compact and not taking up much space. However, some existing electrical switches control one circuit with one switch. When the voltage is too high, the power can be cut off by pneumatic means. When the electrical switch controls two circuits according to the usage requirements, one is the main circuit and the other is the auxiliary circuit. When the main circuit fails due to voltage, the auxiliary circuit can be replaced in time. This usage requirement requires the addition of an electrical switch to manually control the two circuits in sections.

[0004] Therefore, it is necessary to invent a modular self-protection switch to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a modular self-protection switch to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modular self-protection switch, comprising an electric switch body, wherein a first connection module and a second connection module are fixedly connected to both sides of the electric switch body, and the first and second connection modules are respectively connected to the main circuit and the second circuit, and the electric switch body contains:

[0007] The switching component, used to replace the main circuit with the secondary circuit, includes a rotating mechanism and a limiting mechanism. When the rotating mechanism rotates to the first position, it is locked by the limiting mechanism. At this time, the main circuit is open and the secondary circuit is closed. When the rotating mechanism rotates to the second position, the main circuit is closed and the secondary circuit is open.

[0008] The main control component is used to synchronously power off the main circuit and the auxiliary circuit.

[0009] In the above technical solution, when the main circuit experiences a voltage overload, the rotating mechanism is used to switch the main circuit to the auxiliary circuit for power supply. The rotating mechanism is locked in either the main circuit or the auxiliary circuit is powered on by a limit mechanism to ensure the stability of the power supply state. In addition, the main control component can quickly cut off the power to protect both circuits.

[0010] Preferably, the rotating mechanism includes a rotating shaft rotatably disposed inside the electric switch body. A gear and a torsion spring for driving the gear to rotate are sleeved on the outside of the rotating shaft. Two racks are meshed with the outside of the gear. The racks are located on both sides of the gear and are slidably connected inside the electric switch body. A connecting plate is fixedly connected to the bottom of each rack. A second connecting block is fixedly connected to the bottom of the connecting plate away from the rack. A rotary switch for cooperating with a first connecting module or a second connecting module is fixedly connected to the bottom of the second connecting block. First, the limiting mechanism locks the gear in the first position. At this time, the main circuit is open and the secondary circuit is closed. When the main circuit experiences a voltage overload, the limiting mechanism unlocks the gear. The gear rotates under the action of the torsion spring, causing the racks on both sides to move in the opposite direction, thereby causing the two rotary switches to move in the opposite direction. When the gear rotates to the second position, the limiting mechanism locks it again. At this time, under the action of the two rotary switches, the main circuit is closed and the secondary circuit is open.

[0011] Preferably, the limiting mechanism includes two opposing limiting seats located inside the electric switch body. Each limiting seat has a limiting groove, and a magnetic block is disposed inside the limiting groove. Two opposing third fixing rods are fixedly connected to the outside of the rotating shaft. A third moving rod that cooperates with the magnetic block is slidably connected to the end of the third fixing rod away from the rotating shaft. When the third moving rod moves into the limiting groove and engages with the magnetic block inside the limiting groove, the rotating mechanism can be limited. When the third moving rod disengages from the limiting groove, the rotating mechanism can be unlocked. At this time, the rotating mechanism can rotate under the action of the torsion spring.

[0012] Preferably, the main control mechanism includes a rotating ring sleeved on the outside of the rotating shaft. A first connecting block is fixedly connected to the outer ring of the rotating ring, and a first moving rod is fixedly connected to the bottom of the first connecting block. A first cylinder is installed inside the electric switch body, and a connecting rod is fixedly connected to the top of the first cylinder. A first fixed rod connects the connecting rod and the first moving rod. When the first cylinder is activated, it drives the first moving rod to move horizontally. The first connecting block, rotating ring, rotating shaft, gear, and rack move synchronously, driving the two rotary switches to move synchronously, thereby realizing the synchronous power-off of the main circuit and the auxiliary circuit.

[0013] Preferably, the top of the electric switch body is provided with a first moving groove, and the two sides of the first moving groove are provided with second moving grooves. The rotating shaft is slidably connected inside the first moving groove, the rack is slidably connected inside the second moving groove, and the two sides of the electric switch body are provided with third moving grooves. The interior of the third moving groove is interconnected with the interior of the second moving groove, and the connecting plate is slidably connected inside the third moving groove.

[0014] Preferably, a second cylinder is provided on one side of the limiting seat. A second fixed rod is fixedly connected to one end of the second cylinder near the limiting seat. A second moving rod is slidably connected to one end of the second fixed rod away from the second cylinder. A push block for pushing a third moving rod to disengage it from the limiting groove is fixedly connected to one end of the second moving rod away from the second fixed rod. A sliding groove communicating with the limiting seat is opened on the side of the limiting seat near the second cylinder. The sliding groove and the push block cooperate with each other, and the push block slides inside the sliding groove. When the second cylinder is activated, the second fixed rod drives the second moving rod and the push block to move. The push block contacts the third moving rod, pushing the third moving rod to disengage from the magnetic block inside the limiting groove, thereby unlocking the rotating mechanism.

[0015] Preferably, a first current detection device is fixedly connected to the top of the first cylinder, and a second current detection device is fixedly connected to the side of the second cylinder away from the second fixed rod; both the first and second current detection devices are connected to the circuit. When the first current detection device receives overload information from the circuit, it controls the first cylinder to start, and when the second current detection device receives overload information from the circuit, it controls the second cylinder to start.

[0016] Preferably, the electric switch body has a protective shell on top, a top plate is fixedly connected to the top of the protective shell, a fixed frame is fixedly connected inside the protective shell, the rotating shaft is inserted into the center of the top plate, two handles are fixedly connected to the outside of the rotating shaft, the two handles are symmetrically arranged, and a circular stop is fixedly connected to the outside of the rotating shaft, the circular stop being located below the handles.

[0017] Preferably, both the first connecting module and the second connecting module have square slots on their tops, and a rotating column is rotatably connected inside the square slots. The outside of the rotating column is fixedly connected to one end of the rotary switch. Both sides of the top of the first connecting module and the second connecting module are fixedly connected with multiple fixing rings, and each fixing ring is threaded with a threaded pin inside.

[0018] Preferably, the surfaces on which the third moving rod and the push block interact are both convex arc surfaces, and their interaction can cause the third moving rod to disengage from the limiting groove.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. This invention utilizes a rotating mechanism. The handle and rotating shaft within the mechanism work together. Under the action of a torsion spring, when the voltage in the main circuit is too high, the second current detection device connected to the circuit receives an overload signal. This signal controls the second cylinder, which drives the push block to move horizontally. This helps to release the restriction of the third moving rod, allowing it to move into the interior of the third fixed rod. Once the gear is unrestricted, it rotates autonomously under the elastic force of the torsion spring, causing the racks on both sides to move vertically. One rack drives the main circuit's rotating switch to disconnect, while the other rack drives the auxiliary circuit's rotating switch to open. When the main circuit experiences a voltage overload, the auxiliary circuit can be replaced for immediate power supply.

[0021] 2. This invention utilizes a limiting mechanism. The limiting seat and the limiting groove in the limiting mechanism cooperate with each other. Under the action of the magnetic block, the third moving rod is confined inside the limiting seat. When the main circuit is disconnected and the secondary circuit is powered on, the third moving rod approaches the corresponding other limiting seat under the rotation of the torsion spring. The magnetic block in the other limiting seat attracts the third moving rod, confining it in the other limiting seat. This helps to disconnect the main circuit and allow the secondary circuit to be powered on for normal use.

[0022] 3. This invention utilizes a main control component. The rotating ring and the first moving rod in the main control component cooperate with each other. Under the action of the first cylinder, they help to drive the entire rotating mechanism to move. When the first current detection device on the first cylinder receives overload information from the two circuits, it controls the first cylinder through the signal received by the first current detection device. The first cylinder drives the first moving rod to move horizontally, which helps the gear to move horizontally inside the first moving groove. The racks on both sides of the gear move in the direction of the gear, which facilitates the pneumatic disconnection of the two rotary switches and can quickly provide power-off protection for the two circuits. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the electrical switch structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of the electrical switch of the present invention.

[0025] Figure 3 This is a schematic diagram of the rotating mechanism of the present invention.

[0026] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0027] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B.

[0028] In the diagram: 1. Electric switch body; 101. First moving slot; 102. Second moving slot; 103. Third moving slot; 2. First connecting module; 201. Square slot; 3. Second connecting module; 4. Fixing ring; 5. Threaded nail; 6. Protective housing; 7. Top plate; 8. Handle; 9. Rotating shaft; 10. Circular stop; 11. Rotating ring; 12. First connecting block; 13. First moving rod; 14. First fixing rod; 15. Connecting rod; 16. First cylinder; 17. First current detection device; 18. Fixed frame; 19. Second current detection device; 20. Second cylinder; 21. Second fixed rod; 22. Second moving rod; 23. Push block; 24. Limit seat; 25. Slide groove; 26. Third moving rod; 27. Third fixed rod; 28. Torsion spring; 29. ​​Gear; 30. Rack; 31. Connecting plate; 32. Second connecting block; 33. Rotary switch; 34. Rotating column. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention provides, for example Figures 1-5 The modular self-protection switch shown includes an electric switch body 1. The top of the electric switch body 1 is provided with a first moving groove 101. The two sides of the first moving groove 101 are provided with second moving grooves 102. The two sides of the electric switch body 1 are provided with third moving grooves 103. The interior of the third moving groove 103 is interconnected with the interior of the second moving groove 102. The two sides of the electric switch body 1 are respectively fixedly connected to a first connecting module 2 and a second connecting module 3, which are respectively connected to the main circuit and the auxiliary circuit. The top of the first connecting module 2 and the second connecting module 3 are provided with square grooves 201. The interior of the square grooves 201 is rotatably connected to a rotating column 34. The top two sides of the first connecting module 2 and the second connecting module 3 are fixedly connected with multiple fixing rings 4. The interior of each fixing ring 4 is threaded with a threaded nail 5.

[0031] The electric switch body 1 is provided with a protective shell 6 on the top. A top plate 7 is fixedly connected to the top of the protective shell 6. A rotating shaft 9 is rotatably connected to the center of the top plate 7. The rotating shaft 9 is slidably connected inside the first moving groove 101. Two handles 8 are fixedly connected to the outside of the rotating shaft 9. The two handles 8 are arranged symmetrically. A circular stop block 10 is fixedly connected to the outside of the rotating shaft 9. The circular stop block 10 is located below the handles 8.

[0032] The rotating mechanism includes two third fixed rods 27 fixedly connected to the outside of the rotating shaft 9. A spring is installed inside each third fixed rod 27, and the spring is fixedly connected to one end of a third moving rod 26. The third moving rod 26 is slidably connected to opposite sides of the two third fixed rods 27. The end of the third moving rod 26 away from the third fixed rod 27 has a convex arc surface. A torsion spring 28 is fixedly connected to the bottom of each third fixed rod 27, and the torsion spring 28 is sleeved on the outside of the rotating shaft 9. A gear 29 is fixedly connected to the outside of the rotating shaft 9, and the bottom of the torsion spring 28 is fixedly connected to the gear 29, with the gear 29 engaging with it. On the upper surface of the electric switch body 1, two racks 30 are meshed with the gear 29. The racks 30 are slidably connected inside the second moving groove 102. The racks 30 are located on both sides of the gear 29 and are slidably connected to the electric switch body 1. A connecting plate 31 is fixedly connected to the bottom of the two racks 30. The connecting plate 31 is slidably connected inside the third moving groove 103. A second connecting block 32 is fixedly connected to the bottom of the connecting plate 31. A rotary switch 33 is fixedly connected to the bottom of the second connecting block 32. The outside of the rotating column 34 is fixedly connected to one end of the rotary switch 33.

[0033] This invention utilizes a rotating mechanism. Through the cooperation of the handle 8 and the rotating shaft 9 within the rotating mechanism, and under the action of the torsion spring 28, when the voltage in the main circuit is too high, the second current detection device 19 connected to the circuit receives an overload signal. Based on the signal received by the second current detection device 19, the second cylinder 20 is controlled. The second cylinder 20 drives the second moving rod 22 to move horizontally. The push block 23 follows the direction of the second moving rod 22 and moves horizontally. The push block 23 and the third moving rod 26 are in contact with each other, and the push block 23 pushes the third moving rod 26 to move horizontally. The third moving rod 26 moves inward towards the third fixed rod 27. When the third moving rod 26 moves from the limiting seat 24... After being removed from the limiting groove, the limiting seat 24 releases its restriction on the third moving rod 26. After the third moving rod 26 moves into the interior of the third fixed rod 27, the gear 29 is no longer restricted and rotates autonomously under the elastic force of the torsion spring 28, driving the racks 30 on both sides to move horizontally. The connecting plate 31 moves horizontally following the direction of the racks 30, and the second connecting block 32 moves horizontally following the direction of the connecting plate 31. The rotary switch 33 is rotated under force. One rack 30 drives the rotary switch 33 of the main circuit to disconnect the circuit, while the other rack 30 drives the rotary switch 33 of the auxiliary circuit to open the circuit. When the main circuit experiences a voltage overload, the auxiliary circuit can be replaced in time for power supply.

[0034] The main control component includes a rotating ring 11 sleeved on the outside of the rotating shaft 9. A first connecting block 12 is fixedly connected to the outer ring of the rotating ring 11. A first moving rod 13 is fixedly connected to the bottom of the first connecting block 12. A first cylinder 16 is installed inside the electric switch body 1. A connecting rod 15 is fixedly connected to the top of the first cylinder 16. A first fixed rod 14 is connected between the connecting rod 15 and the first moving rod 13. A first current detection device 17 is fixedly connected to the top of the first cylinder 16. The first current detection device 17 is located between the connecting rod 15 and the protective shell 6.

[0035] This invention utilizes a main control component. The rotating ring 11 and the first moving rod 13 within the main control component work together. Under the action of the first cylinder 16, they help to move the entire rotating mechanism. When the first current detection device 17 on the first cylinder 16 receives overload information from both circuits, it controls the first cylinder 16 based on the signal received. The first cylinder 16 drives the first moving rod 13 to move horizontally. The first connecting block 12 moves horizontally following the direction of the first moving rod 13. The rotating ring 11 moves horizontally following the direction of the first moving rod 13. The rotating shaft 9 moves horizontally following the direction of the first moving rod 13. The gear 29 moves horizontally inside the first moving groove 101. The rack 30, meshing with both sides of the gear 29, moves horizontally inside the first moving groove 102 following the gear 29. The connecting plate 31 moves horizontally inside the first moving groove 103 following the rack 30. The rotating switch 33 moves horizontally following the connecting plate 31 to disconnect the main circuit and the auxiliary circuit, providing rapid power-off protection for both circuits.

[0036] A fixed frame 18 is fixedly connected inside the protective housing 6. The inner side of the fixed frame 18 is in contact with one side of the first cylinder 16. The fixed frame 18 is fixedly connected to the electric switch body 1. A limit mechanism is provided on the top of the fixed frame 18. The limit mechanism includes a limit seat 24, which is slidably connected to the fixed frame 18. A limit groove is formed inside the limit seat 24, and a magnetic block is provided inside the limit groove. A third moving rod 26 is slidably connected inside the limit groove. The third moving rod 26 is made of metal and attracts the magnetic block, which can better limit the movement of the third moving rod 26. A second cylinder 20 is provided on one side of the limit seat 24 and is fixedly connected to the fixed frame 18. A second fixed rod 21 is fixedly connected to one end of the cylinder 20 near the limiting seat 24. A second moving rod 22 is connected to one end of the second fixed rod 21 away from the cylinder 20. A push block 23 for pushing a third moving rod 26 to disengage it from the limiting groove is fixedly connected to one end of the second moving rod 22 away from the second fixed rod 21. The push block 23 has a protruding arc surface at one end near the third moving rod 26. A second current detection device 19 is fixedly connected to one side of the cylinder 20 away from the second fixed rod 21. The second current detection device 19 is fixedly connected to the fixed frame 18. A sliding groove 25 is provided on one side of the limiting seat 24 near the cylinder 20. The sliding groove 25 cooperates with the push block 23, and the push block 23 slides inside the sliding groove 25.

[0037] This invention utilizes a limiting mechanism. The limiting seat 24 and the limiting groove in the limiting mechanism cooperate with each other. Under the action of the magnetic block, the third moving rod 26 is confined inside the limiting seat 24. When the main circuit is disconnected and the secondary circuit is powered on, the third moving rod 26 moves closer to the corresponding other limiting seat 24 under the rotation of the torsion spring 28. The magnetic block in the other limiting seat 24 attracts the third moving rod 26, thus confining the third moving rod 26 in the other limiting seat 24. This helps to disconnect the main circuit and allow the secondary circuit to be powered on for normal use.

[0038] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A modular self-protection switch, comprising an electric switch body (1), characterized in that: The electric switch body (1) is fixedly connected to a first connection module (2) and a second connection module (3) on both sides, which are respectively connected to the main circuit and the auxiliary circuit. The electric switch body (1) is provided with: The switching component, used to replace the main circuit with the secondary circuit, includes a rotating mechanism and a limiting mechanism. When the rotating mechanism rotates to the first position, it is locked by the limiting mechanism. At this time, the main circuit is open and the secondary circuit is closed. When the rotating mechanism rotates to the second position, the main circuit is closed and the secondary circuit is open. The main control component is used to synchronously de-energize the main circuit and the auxiliary circuit. The rotating mechanism includes a rotating shaft (9) rotatably disposed inside the electric switch body (1). A gear (29) and a torsion spring (28) for driving the gear (29) to rotate are sleeved on the outside of the rotating shaft (9). Two racks (30) are meshed with the outside of the gear (29). The racks (30) are located on both sides of the gear (29) and are slidably connected inside the electric switch body (1). A connecting plate (31) is fixedly connected to the bottom of each of the two racks (30). A second connecting block (32) is fixedly connected to the bottom of the end of the connecting plate (31) away from the rack (30). A rotary switch (33) for cooperating with the first connecting module (2) or the second connecting module (3) is fixedly connected to the bottom of the second connecting block (32). The limiting mechanism includes two limiting seats (24) located opposite each other inside the electric switch body (1). The limiting seats (24) have a limiting groove inside, and a magnetic block is provided inside the limiting groove. Two third fixing rods (27) are fixedly connected to the outside of the rotating shaft (9). The end of the third fixing rod (27) away from the rotating shaft (9) is slidably connected to a third moving rod (26) that cooperates with the magnetic block. The main control component includes a rotating ring (11) sleeved on the outside of the rotating shaft (9). A first connecting block (12) is fixedly connected to the outer ring of the rotating ring (11). A first moving rod (13) is fixedly connected to the bottom of the first connecting block (12). A first cylinder (16) is installed inside the electric switch body (1). A connecting rod (15) is fixedly connected to the top of the first cylinder (16). A first fixed rod (14) is connected between the connecting rod (15) and the first moving rod (13).

2. The modular self-protection switch according to claim 1, characterized in that: The electric switch body (1) has a first moving groove (101) on its top, and a second moving groove (102) on both sides of the first moving groove (101). The rotating shaft (9) is slidably connected inside the first moving groove (101), and the rack (30) is slidably connected inside the second moving groove (102). The electric switch body (1) has a third moving groove (103) on both sides, and the interior of the third moving groove (103) is interconnected with the interior of the second moving groove (102). The connecting plate (31) is slidably connected inside the third moving groove (103).

3. A modular self-protection switch according to claim 1, characterized in that: A second cylinder (20) is provided on one side of the limiting seat (24). A second fixed rod (21) is fixedly connected to one end of the second cylinder (20) near the limiting seat (24). A second moving rod (22) is connected to one end of the second fixed rod (21) away from the second cylinder (20). A push block (23) for pushing a third moving rod (26) to disengage it from the limiting groove is fixedly connected to one end of the second moving rod (22) away from the second fixed rod (21). A sliding groove (25) communicating with the limiting groove is provided on one side of the limiting seat (24) near the second cylinder (20). The sliding groove (25) and the push block (23) cooperate with each other. The push block (23) slides inside the sliding groove (25).

4. A modular self-protection switch according to claim 3, characterized in that: The top of the first cylinder (16) is fixedly connected to a first current detection device (17), and the side of the second cylinder (20) away from the second fixed rod (21) is fixedly connected to a second current detection device (19).

5. A modular self-protection switch according to claim 1, characterized in that: The electric switch body (1) is provided with a protective shell (6) on the top. A top plate (7) is fixedly connected to the top of the protective shell (6). A fixed frame (18) is fixedly connected inside the protective shell (6). The rotating shaft (9) is inserted into the center of the top plate (7). Two handles (8) are fixedly connected to the outside of the rotating shaft (9). The two handles (8) are arranged symmetrically. A circular stop (10) is fixedly connected to the outside of the rotating shaft (9). The circular stop (10) is located below the handles (8).

6. A modular self-protection switch according to claim 1, characterized in that: The top of the first connecting module (2) and the second connecting module (3) are provided with square grooves (201). A rotating column (34) is rotatably connected inside the square groove (201). The outside of the rotating column (34) is fixedly connected to one end of the rotating switch (33). Multiple fixing rings (4) are fixedly connected to both sides of the top of the first connecting module (2) and the second connecting module (3). Threaded nails (5) are threaded inside the fixing rings (4).

7. A modular self-protection switch according to claim 3, characterized in that: The interaction surfaces of the third moving rod (26) and the push block (23) are both convex arc surfaces.

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