Circuit breaker housing and plug-in circuit breaker

Abstract

The present invention relates to the technical field of circuit breakers, and specifically to a circuit breaker housing and a plug-in circuit breaker, comprising a housing body, inner grooves are arranged on both sides of the interior of the housing body, a limiting groove is arranged on one side of the housing body, an auxiliary component is arranged inside the two inner grooves, and the auxiliary component is used to assist the circuit breaker in opening and closing the gate; a circuit breaker body, and limiting blocks are arranged on both sides of one side of the circuit breaker body close to the housing body, respectively matching the limiting grooves; a piezoelectric component, the piezoelectric component is arranged on one side of the interior upper part of the circuit breaker body, and is arranged above the arc block and the fixed contact, and the piezoelectric component is used to assist in initial contact before the arc block and the fixed contact are closed. Compared with the prior art, the present invention effectively reduces the probability of arc and spark generation by providing an auxiliary component to cooperate with the piezoelectric component, and cooperates with the fixed contact and the movable contact, thereby improving the stability of the circuit connection and the life of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a circuit breaker housing and a plug-in circuit breaker. Background Art

[0002] The widespread use of circuit breakers has effectively improved the safety of electrical appliance use. In order to meet the miniaturization trend of electrical equipment, the overall structure and operation mode of the corresponding circuit breakers also need to be continuously upgraded and improved.

[0003] In the prior art, the circuit breaker housing and plug-in circuit breaker in the Chinese patent document with publication number CN111477506A proposes the circuit breaker housing, which is easy to install and use, has good insulation performance, and is conducive to improving the safety of users' electricity use. In addition, the circuit breaker includes an unlocking mechanism independent of the button mechanism to avoid the circuit breaker being accidentally pulled out of the circuit breaker assembly due to the opening operation. However, consistent with the traditional method, during the closing process of the traditional circuit breaker, when the movable contact and the fixed contact are close to and finally closed, the contact area is very limited at an instant, resulting in a large contact resistance, which is easy to generate an extremely high current density, thereby causing local overheating, and generating arcs and sparks. Although most traditional circuit breakers are equipped with arc extinguishing junctions, Structures, such as arc extinguishing grids or arc blowing magnetic fields, can quickly extinguish arcs by stretching the arc or decomposing the arc, thereby reducing the destructive effects of the arc. However, the main function of the arc extinguishing structure is to prevent the arc from continuing to burn. The arc will still briefly cause the contact surface to melt or ablate at the moment when the switch is first closed. As time goes by, these short arcs and sparks will damage the contact surface, forming local ablation points, which will cause the contact surface to become rougher or uneven, further exacerbating the increase in contact resistance. The continuous increase in contact resistance will affect the normal conduction of current, resulting in unstable energy transmitted in the circuit, affecting the reliability of the entire system. Therefore, the present invention discloses a circuit breaker housing and a plug-in circuit breaker to reduce the probability of arcs and sparks. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a circuit breaker housing and a plug-in circuit breaker to solve the problem that the arc may temporarily cause the contact surface to melt or burn at the moment of initial closing.

[0005] Based on the above purpose, the present invention provides a circuit breaker housing, comprising a housing body, inner grooves are arranged on both sides of the interior of the housing body, and a limiting groove is arranged on one side of the housing body;

[0006] An auxiliary component is arranged inside the two inner grooves, and the auxiliary component is used to assist the circuit breaker in opening and closing the gate.

[0007] The auxiliary component includes a first rotating rod and a second rotating rod rotatably mounted on the upper inner side of the inner groove, and the middle part of the first rotating rod is sleeved with a rotating sleeve tooth, and a vertical sliding groove is also provided on one side of the inner side of the inner groove, and a first tooth plate and a second tooth plate that mesh with each other are slidably mounted inside the vertical sliding groove, and a limiting groove is provided on one side of the first rotating rod away from the shell body, and a sliding groove is also provided on the upper inner side of the inner groove, and a sliding block is slidably mounted on the sliding groove, and a pushing block is fixedly mounted on the side of the sliding block away from the shell body, and a V-shaped rotating plate is sleeved on the outer surface of the second rotating rod, and one end of the rotating plate is fixedly connected to the sliding block, and pressure plates are fixedly mounted on both sides of a side of the second tooth plate close to the rotating plate, and the two pressure plates are respectively located on the upper and lower sides of the rotating plate.

[0008] Preferably, the slide groove is opened in an arc shape, and the bottom of the push block is arranged in a semicircular shape.

[0009] The present invention also provides a plug-in circuit breaker, which is applied to the above-mentioned circuit breaker housing, comprising:

[0010] A circuit breaker body, wherein limit blocks are arranged on both sides of a side of the circuit breaker body close to the shell body, and the limit blocks are respectively matched with the limit grooves, and a first terminal and a second terminal are respectively arranged on the top and the bottom of the circuit breaker body, and an adjusting gate is rotatably installed on a side of the circuit breaker body away from the shell body, and a first linkage block is rotatably installed on one side of the inner part of the circuit breaker body, one end of the first linkage block is connected to one side of the adjusting gate, and a second linkage block is rotatably installed on the upper part of the inner part of the circuit breaker body, and a rotating shaft is arranged on one side of the second linkage block, and the second linkage block is rotatably connected to the circuit breaker body through the rotating shaft, one end of the second linkage block is rotatably connected to one end of the first linkage block, and an arc block is arranged on the other end of the second linkage block, and a movable contact is fixedly installed on the upper end of the arc block away from the second linkage block, and a fixed contact matched with the arc block is arranged below the first terminal, and the circuit breaker body An electromagnetic coil is arranged in the middle part of the interior, and the upper part of the electromagnetic coil is connected to one side of the second linkage block. A leakage protection component is also arranged inside the circuit breaker body, and the leakage protection component includes a circuit breaking protection module and an overload protection module. The circuit breaking protection module includes an iron core column movably installed inside the electromagnetic coil, and the iron core column penetrates the second linkage block, and a limiting cap is arranged on the top of the iron core column. The overload protection module includes a double bridge piece fixedly installed at the bottom of the circuit breaker body, one side of the double bridge piece is connected to one side of the second terminal, and the other side of the double bridge piece is connected to the bottom of the electromagnetic coil. The overload protection module also includes a tripping spring piece 1 rotatably installed at the bottom of the circuit breaker body and a tripping spring piece 2 rotatably installed on one side of the circuit breaker body, the tripping spring piece 1 is adapted to the tripping spring piece 2, and an arc extinguishing chamber is also arranged on the side of the circuit breaker body away from the regulating gate.

[0011] A piezoelectric component, the piezoelectric component is arranged on one side of the upper part of the circuit breaker body and above the arc block and the fixed contact, and the piezoelectric component is used to perform auxiliary initial contact before the arc block and the fixed contact are closed;

[0012] A protection component is arranged inside the circuit breaker body, and the protection component is arranged on a side close to the fixed contact, and the protection component is used to protect and guard the fixed contact after the circuit is broken.

[0013] Preferably, a next-level contact is also arranged in the middle of the top of the movable contact, next-level contacts are arranged on both sides of the top of the movable contact, an upper-level contact matching the next-level contact is arranged in the middle of the bottom of the fixed contact, and upper-level contacts matching the next-level contact are arranged on both sides of the bottom of the fixed contact.

[0014] Preferably, the next-level contact and the previous-level contact are both hemispherical, the height of the next-level contact is higher than the two next-level contacts, the top surface of the previous-level contact is connected to the bottom surface of the fixed contact by a spring, the spherical surfaces of the next-level contact and the previous-level contact are both grid-shaped, the next-level contact is an upwardly protruding semi-cylindrical shape, and a semicircular groove matching the next-level contact is provided at the bottom of the upper-level contact.

[0015] Preferably, the piezoelectric assembly includes a piezoelectric device fixedly mounted on one side of the upper interior of the circuit breaker body, a piezoelectric ceramic is provided on one side of the interior of the piezoelectric device, a movable pressure rod is movably installed on the other side of the piezoelectric device, and mutually adaptable tapping contacts are provided on one side of the piezoelectric ceramic close to the movable pressure rod and on the side of the movable pressure rod close to the piezoelectric ceramic, a tension spring is fixedly connected to one side of the interior of the movable pressure rod, and the other end of the tension spring is fixedly connected to the tapping contact close to the side of the movable pressure rod, a high-voltage lead is also provided inside the movable pressure rod, and the high-voltage lead passes through the movable pressure rod, the tail end of the piezoelectric ceramic is provided on the side of the connection between the arc block and the fixed contact, and the main material of the piezoelectric ceramic is set to silicon dioxide.

[0016] Preferably, the rotating shaft passes through the circuit breaker body, and limiting protrusions are provided at both ends of the rotating shaft on a side close to the first rotating rod, the limiting protrusions are adapted to the limiting grooves on one side of the first rotating rod, a through groove is provided on a side of the circuit breaker body close to the piezoelectric component, a positioning plate is also fixedly connected to one side of the movable pressure rod, the positioning plate passes through the through groove, a push block on one side of the positioning plate is adapted to the positioning plate, a side of the positioning plate away from the movable pressure rod is straight, a side of the positioning plate close to the movable pressure rod is inclined, and the top of the positioning plate is semicircular.

[0017] Preferably, the protection assembly includes a connecting plate rotatably mounted above the inside of the circuit breaker body, one side of the second rotating rod inside the circuit breaker housing penetrates the circuit breaker body, one end of the connecting plate is fixedly connected to the second rotating rod, and the other end of the connecting plate is provided with a sheath.

[0018] Preferably, the sheath is U-shaped, the sheath is made of rubber material, and the sheath is compatible with the fixed contact.

[0019] Beneficial effects of the present invention:

[0020] 1. This type of circuit breaker housing and plug-in circuit breaker are equipped with an auxiliary component to cooperate with the piezoelectric component, and are equipped with fixed contacts and movable contacts. During the closing process, the piezoelectric component is mechanically pushed by the movable pressure rod to make the piezoelectric ceramic generate a voltage signal before the contact is closed to assist the initial contact. This process can reduce the resistance at the moment of initial contact, reduce the probability of arc and spark generation, and ensure the smooth conduction of current. The auxiliary component is linked by a rotating rod, a slider, and a push block to assist the piezoelectric component to work smoothly during the closing process, and its reset process will not interfere with the normal operation of the circuit breaker. At the same time, the multi-level contacts of the fixed contacts and the movable contacts further optimize the current conduction path, disperse the current through the priority contact of the next-level contacts, reduce the formation of instantaneous arcs, and enhance the stability of the circuit connection through the secondary contacts.

[0021] 2. This type of circuit breaker housing and plug-in circuit breaker are provided with a protection component. During the closing operation, the second rotating rod drives the sheath away from the fixed contact through the connecting plate, ensuring that the fixed contact and the movable contact can smoothly contact and conduct current, avoiding interference of the sheath on the contact of the contacts. In the circuit-breaking or tripping state, the second rotating rod rotates in the opposite direction, driving the sheath to gradually wrap the fixed contact, providing comprehensive physical protection for the contact. This wrapping can effectively prevent the fixed contact from being affected by the external environment and avoid the contact from being exposed to the outside, thereby increasing its safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the housing body and the circuit breaker body of the present invention;

[0025] Figure 3 This is a schematic diagram of the planar structure of the circuit breaker body of the present invention;

[0026] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0027] Figure 5 It is a schematic diagram of the structure of the fixed contact and the movable contact of the present invention;

[0028] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0029] Figure 7 It is a schematic diagram of the planar structure of the fixed contact and the movable contact of the present invention;

[0030] Figure 8 This is a schematic diagram of the internal structure of the circuit breaker body of the present invention;

[0031] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0032] Fig.10 This is a schematic diagram of the structure of the auxiliary component of the present invention from a first viewing angle;

[0033] Fig.11 This is a schematic diagram of the structure of the auxiliary component of the present invention from a second viewing angle;

[0034] Fig.12 For the present invention Fig.11 The enlarged structural diagram at D in the middle;

[0035] Fig.13 It is a schematic diagram of the three-dimensional structure of the piezoelectric component of the present invention;

[0036] Fig.14 A schematic diagram of the internal structure of the piezoelectric component of the present invention;

[0037] Fig.15 For the present invention Fig.10 The enlarged structural diagram at E in the middle;

[0038] Fig.16 It is a schematic diagram of the tooth plate structure of the present invention.

[0039] The markings in the figure are:

[0040] 1. Shell body; 2. Inner groove; 3. Limit groove; 4. Circuit breaker body; 5. Limit block; 6. First terminal; 7. Second terminal; 8. Adjustment gate; 9. First linkage block; 10. Second linkage block; 11. Electromagnetic coil; 12. Iron core column; 13. Double bridge piece; 14. Tripping spring piece 1; 15. Tripping spring piece 2; 16. Arc extinguishing chamber; 17. Arc block; 18. Movable contact; 19. Next level contact; 20. Next level contact; 21. Fixed contact; 22. Previous level contact; 23. Upper secondary contact; 24, piezoelectric device; 25, movable pressure rod; 26, piezoelectric ceramic; 27, tapping contact; 28, tension spring; 29, high-voltage lead; 30, first rotating rod; 31, rotating sleeve gear; 32, rotating shaft; 33, limiting protrusion; 34, second rotating rod; 35, rotating plate; 36, sliding groove; 37, sliding block; 38, pushing block; 40, connecting plate; 41, positioning plate; 42, sheath; 43, through groove; 44, vertical sliding groove; 45, first tooth plate; 46, second tooth plate; 47, pressure plate. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0042] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] like Figures 1 to 9 As shown, a circuit breaker housing comprises a housing body 1, inner grooves 2 are arranged on both sides of the housing body 1, and a limiting groove 3 is arranged on one side of the housing body 1; an auxiliary component is arranged inside the two inner grooves 2, and the auxiliary component is used to assist the circuit breaker in opening and closing the gate;

[0044] The inner groove 2 provides a clear installation and sliding path for the auxiliary components, ensuring the precise positioning and smooth operation of the auxiliary components, thereby effectively assisting the opening and closing actions of the circuit breaker gate to perform synchronous movement. The limit groove 3 further ensures the stability of the gate during the switching process, avoiding misoperation or poor contact caused by shaking or displacement.

[0045] like Figures 1 to 9As shown, the present invention also provides a plug-in circuit breaker, which is applied to the above-mentioned circuit breaker housing, including a circuit breaker body 4, and both sides of the side of the circuit breaker body 4 close to the housing body 1 are provided with limit blocks 5, and the limit blocks 5 are respectively adapted to the limit grooves 3. The top and bottom of the circuit breaker body 4 are respectively provided with a first terminal 6 and a second terminal 7, and the side of the circuit breaker body 4 away from the housing body 1 is rotatably installed with an adjusting gate 8, and the inside of the circuit breaker body 4 is rotatably installed with a first linkage block 9, one end of the first linkage block 9 is connected to one side of the adjusting gate 8, and the inside of the circuit breaker body 4 is rotatably installed with a second linkage block 9. 10, a rotating shaft 32 is provided on one side of the second linkage block 10, and the second linkage block 10 is rotatably connected to the circuit breaker body 4 through the rotating shaft 32, one end of the second linkage block 10 is rotatably connected to one end of the first linkage block 9, and an arc block 17 is provided on the other end of the second linkage block 10, and a movable contact 18 is fixedly installed on the upper end of the arc block 17 away from the second linkage block 10, and a fixed contact 21 adapted to the arc block 17 is provided below the first terminal 6, and an electromagnetic coil 11 is provided in the middle of the inner part of the circuit breaker body 4, and the upper part of the electromagnetic coil 11 is connected to one side of the second linkage block 10, and a leakage The electric protection component, the leakage protection component includes a circuit breaker protection module and an overload protection module, the circuit breaker protection module includes an iron core column 12 movably installed inside the electromagnetic coil 11, and the iron core column 12 penetrates the second linkage block 10, and a limit cap is arranged on the top of the iron core column 12, the overload protection module includes a double bridge piece 13 fixedly installed at the bottom of the circuit breaker body 4, one side of the double bridge piece 13 is connected to one side of the second terminal 7, and the other side of the double bridge piece 13 is connected to the bottom of the electromagnetic coil 11, the overload protection module also includes a tripping spring piece 14 rotatably installed at the bottom of the circuit breaker body 4 and a tripping spring piece 14 rotatably installed at the bottom of the circuit breaker body 4 and a tripping spring piece 14 rotatably installed at the bottom of the circuit breaker body 4. A trip spring piece 15 is provided on one side of the circuit breaker body 4, and the trip spring piece 14 is matched with the trip spring piece 15. An arc extinguishing chamber 16 is also provided on the side of the circuit breaker body 4 away from the regulating gate 8; a piezoelectric component is provided on the upper side of the circuit breaker body 4 and above the arc block 17 and the fixed contact 21. The piezoelectric component is used to assist in initial contact before the arc block 17 and the fixed contact 21 are closed; a protection component is provided inside the circuit breaker body 4 and on the side close to the fixed contact 21. The protection component is used to protect and guard the fixed contact 21 after the circuit is broken;

[0046] When the circuit breaker is working normally, the current flows into the circuit breaker through the first terminal 6, and is conducted to the second terminal 7 through the double bridge piece 13 and the electromagnetic coil 11, forming a normal circuit closure. When the regulating gate 8 is closed, the first linkage block 9 and the second linkage block 10 drive the arc block 17 to gradually approach the fixed contact 21. When the arc block 17 and the fixed contact 21 are about to close, the piezoelectric component assists in initial contact to ensure that the current flows quickly and reduces the contact resistance. When a circuit breaker is broken, the iron core column 12 and the electromagnetic coil 11 produce an electromagnetic reaction to trip, and when an overload occurs, the double bridge piece 13 is heated and tilted to push the trip spring piece 14 to drive the trip spring piece 2 15 to trip and break the circuit (wherein the closing and closing process of the circuit breaker and Circuit breaking protection and overload protection are both existing technologies and are not elaborated on in detail. At the same time, the arc extinguishing chamber 16 extinguishes the generated arc in time to protect the internal components. The protection component protects the fixed contact 21 to prevent damage. The addition of the piezoelectric component provides an auxiliary initial contact function before the arc block 17 and the fixed contact 21 are closed. At the moment of current transmission, the energy release of the piezoelectric component can be used to improve the efficiency of the initial arc formation, thereby ensuring that the resistance and friction loss between the contact points are reduced during the current on-off process, extending the service life of the circuit breaker and reducing the risk of overheating and poor contact. The protection component is located on one side of the fixed contact 21, which can effectively protect the fixed contact 21 after the circuit is broken, thereby increasing safety.

[0047] like Figure 1 , Figure 7 , Figure 8 As shown, a next-level contact 19 is also provided in the middle of the top of the movable contact 18, and next-level contacts 20 are provided on both sides of the top of the movable contact 18. An upper-level contact 22 adapted to the next-level contact 19 is provided in the middle of the bottom of the fixed contact 21, and upper-level contacts 23 adapted to the next-level contact 20 are provided on both sides of the bottom of the fixed contact 21. The next-level contact 19 and the upper-level contact 22 are both hemispherical. The height of the next-level contact 19 is higher than that of the two next-level contacts 20. The top surface of the upper-level contact 22 is connected to the bottom surface of the fixed contact 21 by a spring. The spherical surfaces of the next-level contact 19 and the upper-level contact 22 are both grid-shaped. The next-level contact 20 is an upwardly protruding semi-cylindrical arrangement, and a semicircular groove adapted to the next-level contact 20 is provided at the bottom of the upper-level contact 23.

[0048] During the closing process of the circuit breaker, the movable contact 18 approaches the fixed contact 21. First, the next-level contact 19 contacts the upper-level contact 22. This is because their height is higher than the lower-level contact 20. The main current is preferentially conducted through the hemispherical grid-like contact surface, and the current is evenly dispersed, reducing the generation of arcs and sparks. Next, as the closing continues, the lower-level contact 20 gradually contacts the semicircular groove of the upper-level contact 23. At this time, the current is further conducted through the secondary contact to form a more stable circuit connection. The action of the spring ensures close contact between the contacts and provides a buffer for mechanical shock, ensuring the safe operation of the equipment. During the opening process, the movable contact 18 moves away from the fixed contact 21, the contacts are gradually separated, the current is gradually reduced, and the arcs and sparks are also effectively controlled, making the contact more dispersed, providing multiple contact points, and increasing the total area of ​​the contact surface, thereby effectively improving the stability of the contact and reducing the poor contact problems that may be caused by single-point contact.

[0049] like Figure 3 , Figure 4 , Figure 6 , Fig. 9 As shown, the piezoelectric assembly includes a piezoelectric device 24 fixedly mounted on one side of the upper part of the circuit breaker body 4, a piezoelectric ceramic 26 is arranged on one side of the inside of the piezoelectric device 24, a movable pressure rod 25 is movably mounted on the other side of the piezoelectric device 24, and a side of the piezoelectric ceramic 26 close to the movable pressure rod 25 and a side of the movable pressure rod 25 close to the piezoelectric ceramic 26 are both provided with mutually adapted knocking contacts 27, a tension spring 28 is fixedly connected to one side of the inside of the movable pressure rod 25, and the other end of the tension spring 28 is fixedly connected to the knocking contact 27 close to the side of the movable pressure rod 25, a high-voltage lead 29 is also arranged inside the movable pressure rod 25, and the high-voltage lead 29 is arranged through the movable pressure rod 25, the end of the piezoelectric ceramic 26 is arranged on one side of the connection between the arc block 17 and the fixed contact 21, and the main material of the piezoelectric ceramic 26 is set to silicon dioxide;

[0050] When the circuit breaker is closed, the movable pressure rod 25 is pressed with the mechanical action, and the tension spring 28 starts to pull the knocking contact 27, so that the piezoelectric ceramic 26 is subjected to mechanical pressure. The piezoelectric ceramic 26 generates a voltage signal under the pressure, and transmits the voltage signal to the connection between the arc block 17 and the fixed contact 21 through the high-voltage lead 29. This process is completed before the contact is closed, so that an auxiliary voltage is provided at the moment of closing, reducing the contact resistance and ensuring the smooth conduction of the current. The advantage of this is that at the moment of contact closure, the current generated by the piezoelectric device can be pre-loaded with a small micro-current, thereby reducing the contact resistance, which can ensure that the current can start to flow before the contacts are fully in contact. This micro-current can not only improve the initial contact, but also reduce the probability of instantaneous electric sparks or arcs. Although the energy generated by the piezoelectric element is low, it plays a pre-conduction role at the moment of conduction, thereby creating better conditions for the transmission of large currents.

[0051] The auxiliary component includes a first rotating rod 30 and a second rotating rod 34 rotatably installed on the upper inner side of the inner groove 2. A rotating sleeve tooth 31 is sleeved on the middle part of the first rotating rod 30. A vertical sliding groove 44 is also provided on one side of the inner side of the inner groove 2. A first tooth plate 45 and a second tooth plate 46 that mesh with each other are slidably installed inside the vertical sliding groove. One side of the first tooth plate 45 meshes with the rotating sleeve tooth 31. A limiting groove is provided on the side of the first rotating rod 30 away from the outer shell body 1. A sliding groove 36 is also provided on the upper inner side of the inner groove 2. A slider 37 is slidably installed on the sliding groove 36. A push block 38 is fixedly installed on the side of the slider 37 away from the outer shell body 1. A V-shaped rotating plate 35 is sleeved on the outer surface of the second rotating rod 34. One end of the rotating plate 35 is fixedly connected to the slider 37. The second tooth plate 46 is close to one side of the rotating plate 35. A pressure plate 47 is fixedly installed on both sides, and the two pressure plates 47 are respectively located on the upper and lower sides of the rotating plate 35, the slide groove 36 is opened in an arc shape, and the bottom of the push block 38 is set in a semicircular shape; the rotating shaft 32 passes through the circuit breaker body 4, and the two ends of the rotating shaft 32 close to the first rotating rod 30 are provided with limiting protrusions 33, and the limiting protrusions 33 are adapted to the limiting grooves on one side of the first rotating rod 30. A through groove 43 is opened on the side of the circuit breaker body 4 close to the piezoelectric component, and a positioning plate 41 is also fixedly connected to one side of the movable pressure rod 25. The positioning plate 41 passes through the through groove 43, and the push block 38 on one side of the positioning plate 41 is adapted to the positioning plate 41. The side of the positioning plate 41 away from the movable pressure rod 25 is set in a straight surface shape, and the side of the positioning plate 41 close to the movable pressure rod 25 is set in an inclined shape, and the top of the positioning plate 41 is set in a semicircular shape;

[0052] When the circuit breaker body 4 is inserted into the shell body 1, the rotating shaft 32 is first clamped and fixed with the limiting groove on the first rotating rod 30 through the limiting protrusion 33 to ensure that the circuit breaker body 4 is stably fixed in the shell, and the positioning plate 41 cooperates with the pushing block 38. When the closing operation is started, the rotating shaft 32 rotates, driving the second linkage block 10 to flip upward, and then synchronously driving the first rotating rod 30 to rotate through the limiting protrusion 33. The rotation of the first rotating rod 30 also drives the rotating sleeve tooth 31 to rotate. The rotating sleeve tooth 31 drives the first tooth plate 45 to move upward synchronously, and the first tooth plate 45 drives the second tooth plate 46 to move in the opposite direction. Then the pressure plate 47 on the second tooth plate 46 will drive one side of the rotating plate 35 to press downward. At this time, the other end of the rotating plate 35 drives the slider 37 to slide along the arc-shaped sliding groove 36. When the slider 37 slides, it pushes the pushing block 38. The pushing block 38 contacts and pushes the positioning plate 41, driving the positioning plate 41 to slide to the side of the active pressure rod 25 of the piezoelectric component , pushing the movable pressure rod 25 to move. Under the action of the thrust, the movable pressure rod 25 triggers the piezoelectric ceramic 26 in the piezoelectric component to generate voltage to assist initial contact. When the piezoelectric component completes its work, the closing operation continues. At this time, the slider 37 continues to slide in the slide groove 36, but because the slide groove 36 is arc-shaped, the sliding of the slider 37 and the push block 38 skips their relative positions, avoiding continuing to press the movable pressure rod 25. In this process, the rebound force of the tension spring 28 causes the movable pressure rod 25 to automatically reset, ending the work of the piezoelectric component. When the circuit breaker enters the closed state, the reverse operation begins, and the rotating shaft 32 rotates in the reverse direction, driving the first rotating rod 30, the rotating plate 35 and the slider 37 to move in the reverse direction. At this time, the push block 38 passes through the inclined surface of the positioning plate 41 and the semicircular design at the top, and is adapted to the semicircular bottom of the push block 38, and passes smoothly, so that the positioning plate 41 and the push block 38 will not be hindered during the resetting process, thereby ensuring the smooth completion of the closing operation.

[0053] like Figure 4 , Fig. 9 As shown, the protection assembly includes a connecting plate 40 rotatably mounted on the upper part of the circuit breaker body 4, one side of the second rotating rod 34 inside the circuit breaker housing penetrates the circuit breaker body 4, one end of the connecting plate 40 is fixedly connected to the second rotating rod 34, and the other end of the connecting plate 40 is provided with a sheath 42, the sheath 42 is U-shaped, the sheath 42 is set to a rubber material, and the sheath 42 is adapted to the fixed contact 21;

[0054] The closing operation will drive the second rotating rod 34 to rotate. The second rotating rod 34 is connected to the connecting plate 40. A sheath 42 is fixed to the other end of the connecting plate 40. As the second rotating rod 34 rotates, the connecting plate 40 drives the sheath 42 to gradually move away from the fixed contact 21, so that the fixed contact 21 and the movable contact 18 can smoothly contact and energize. During this process, the sheath 42 is completely separated from the fixed contact 21, ensuring that there is no hindrance to the contact contact and ensuring a smooth circuit. When the circuit breaker enters the tripping or power-off state, the second rotating rod 34 starts to rotate in the opposite direction, driving the connecting plate 40 and the sheath 42 to move in the opposite direction. The sheath 42 gradually approaches and wraps the fixed contact 21 as the connecting plate 40 moves, completely enclosing the fixed contact 21. In this wrapped state, the sheath 42 provides comprehensive physical protection for the fixed contact 21, preventing the contact from being exposed to the outside, thereby increasing its safety.

[0055] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0056] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A circuit breaker housing, characterized in that: include: A shell body (1), wherein inner grooves (2) are provided on both sides of the interior of the shell body (1), and a limiting groove (3) is provided on one side of the shell body (1); An auxiliary component, the auxiliary component being arranged inside the two inner grooves (2), and the auxiliary component being used to assist the circuit breaker in opening and closing the gate; The auxiliary component comprises a first rotating rod (30) and a second rotating rod (34) rotatably mounted on the upper inner side of the inner groove (2); a rotating sleeve tooth (31) is sleeved on the middle part of the first rotating rod (30); a vertical sliding groove (44) is further provided on one side of the inner groove (2); a first tooth plate (45) and a second tooth plate (46) meshing with each other are slidably mounted inside the vertical sliding groove; one side of the first tooth plate (45) meshes with the rotating sleeve tooth (31); a limiting groove is provided on one side of the first rotating rod (30) away from the outer shell body (1); and the inner groove (2) is provided with a first tooth plate (45) and a second tooth plate (46) meshing with each other. A slide groove (36) is also provided on the upper inner side of the groove (2), a slider (37) is slidably mounted on the slide groove (36), a push block (38) is fixedly mounted on the side of the slider (37) away from the shell body (1), a V-shaped rotating plate (35) is sleeved on the outer surface of the second rotating rod (34), one end of the rotating plate (35) is fixedly connected to the slider (37), and pressure plates (47) are fixedly mounted on both sides of a side of the second tooth plate (46) close to the rotating plate (35), and the two pressure plates (47) are respectively located on the upper and lower sides of the rotating plate (35).

2. The circuit breaker housing according to claim 1, characterized in that: The slide groove (36) is opened in an arc shape, and the bottom of the push block (38) is arranged in a semicircular shape.

3. A plug-in circuit breaker, applied to the circuit breaker housing as claimed in claim 2, characterized in that: include: A circuit breaker body (4), wherein both sides of a surface of the circuit breaker body (4) close to the housing body (1) are provided with limit blocks (5), the limit blocks (5) are respectively matched with the limit grooves (3), the top and bottom of the circuit breaker body (4) are respectively provided with a first terminal (6) and a second terminal (7), an adjusting gate (8) is rotatably mounted on a surface of the circuit breaker body (4) away from the housing body (1), a first linkage block (9) is rotatably mounted on one side of the inside of the circuit breaker body (4), one end of the first linkage block (9) is connected to one side of the adjusting gate (8), and the circuit breaker body (4) A second linkage block (10) is rotatably mounted on the upper part of the inside, a rotating shaft (32) is provided on one side of the second linkage block (10), the second linkage block (10) is rotatably connected to the circuit breaker body (4) via the rotating shaft (32), one end of the second linkage block (10) is rotatably connected to one end of the first linkage block (9), an arc block (17) is provided on the other end of the second linkage block (10), a movable contact (18) is fixedly mounted on the upper end of the arc block (17) away from the second linkage block (10), and a fixed contact (21) adapted to the arc block (17) is provided below the first terminal (6). ), an electromagnetic coil (11) is arranged in the middle of the interior of the circuit breaker body (4), the upper part of the electromagnetic coil (11) is connected to one side of the second linkage block (10), and a leakage protection component is also arranged inside the circuit breaker body (4), the leakage protection component comprises a circuit breaker protection module and an overload protection module, the circuit breaker protection module comprises an iron core column (12) movably mounted inside the electromagnetic coil (11), and the iron core column (12) passes through the second linkage block (10), a limit cap is arranged on the top of the iron core column (12), and the overload protection module comprises a fixedly mounted on the circuit breaker body (4), one side of the double bridge piece (13) is connected to one side of the second terminal (7), and the other side of the double bridge piece (13) is connected to the bottom of the electromagnetic coil (11), the overload protection module also includes a tripping spring piece 1 (14) rotatably mounted at the bottom of the circuit breaker body (4) and a tripping spring piece 2 (15) rotatably mounted at one side of the circuit breaker body (4), the tripping spring piece 1 (14) is matched with the tripping spring piece 2 (15), and an arc extinguishing chamber (16) is also provided on a side of the circuit breaker body (4) away from the regulating gate (8); a piezoelectric component, the piezoelectric component being arranged on an upper side of the interior of the circuit breaker body (4) and arranged above the arc block (17) and the fixed contact (21), the piezoelectric component being used to perform auxiliary initial contact before the arc block (17) and the fixed contact (21) are closed; A protection component is arranged inside the circuit breaker body (4), and the protection component is arranged on a side close to the fixed contact (21), and the protection component is used to protect and safeguard the fixed contact (21) after the circuit is broken.

4. The plug-in circuit breaker according to claim 3, characterized in that A next-level contact (19) is also arranged in the middle of the top of the movable contact (18), and next-level contacts (20) are arranged on both sides of the top of the movable contact (18). An upper-level contact (22) matching the next-level contact (19) is arranged in the middle of the bottom of the fixed contact (21), and upper-level contacts (23) matching the next-level contact (20) are arranged on both sides of the bottom of the fixed contact (21).

5. The plug-in circuit breaker according to claim 4, characterized in that The lower-level contact (19) and the upper-level contact (22) are both hemispherically arranged, the lower-level contact (19) is higher than the two lower-level contacts (20), the top surface of the upper-level contact (22) is connected to the bottom surface of the fixed contact (21) by means of a spring, the spherical surfaces of the lower-level contact (19) and the upper-level contact (22) are both grid-shaped, the lower-level contact (20) is in an upwardly protruding semi-cylindrical shape, and the lower-level contact (23) is provided with a semicircular groove at the bottom end thereof that matches the lower-level contact (20).

6. The plug-in circuit breaker according to claim 5, characterized in that The piezoelectric assembly comprises a piezoelectric device (24) fixedly mounted on one side of the upper interior of the circuit breaker body (4); a piezoelectric ceramic (26) is arranged on one side of the interior of the piezoelectric device (24); a movable pressure rod (25) is movably mounted on the other side of the piezoelectric device (24); a side of the piezoelectric ceramic (26) close to the movable pressure rod (25) and a side of the movable pressure rod (25) close to the piezoelectric ceramic (26) are both provided with mutually adapted knocking contacts (27); the interior of the movable pressure rod (25) A tension spring (28) is fixedly connected to one side, and the other end of the tension spring (28) is fixedly connected to a tapping contact (27) close to one side of the movable pressure rod (25). A high-voltage lead (29) is also arranged inside the movable pressure rod (25), and the high-voltage lead (29) passes through the movable pressure rod (25). The tail end of the piezoelectric ceramic (26) is arranged on one side of the connection between the arc block (17) and the fixed contact (21), and the main material of the piezoelectric ceramic (26) is set to silicon dioxide.

7. The plug-in circuit breaker according to claim 6, characterized in that The rotating shaft (32) passes through the circuit breaker body (4), and both ends of the rotating shaft (32) on a side close to the first rotating rod (30) are provided with limiting protrusions (33), and the limiting protrusions (33) are matched with the limiting grooves on one side of the first rotating rod (30). A through groove (43) is provided on the side of the circuit breaker body (4) close to the piezoelectric component. A positioning plate (41) is fixedly connected to one side of the movable pressure rod (25), and the positioning plate (41) passes through the through groove (43). A push block (38) on one side of the positioning plate (41) is matched with the positioning plate (41). A side of the positioning plate (41) away from the movable pressure rod (25) is arranged in a straight surface shape, and a side of the positioning plate (41) close to the movable pressure rod (25) is arranged in an inclined shape. The top of the positioning plate (41) is arranged in a semicircular shape.

8. The plug-in circuit breaker according to claim 7, characterized in that The protection assembly comprises a connecting plate (40) rotatably mounted above the inside of the circuit breaker body (4); one side of a second rotating rod (34) inside the circuit breaker housing penetrates the circuit breaker body (4); one end of the connecting plate (40) is fixedly connected to the second rotating rod (34); and the other end of the connecting plate (40) is provided with a sheath (42).

9. The plug-in circuit breaker according to claim 8, characterized in that The sheath (42) is arranged in a U shape, the sheath (42) is made of a rubber material, and the sheath (42) is adapted to the fixed contact (21).

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