Universal circuit breaker

Abstract

The present invention relates to the field of low-voltage electrical appliances, and particularly relates to a universal circuit breaker, which comprises a drawer base and a circuit breaker body arranged in the drawer base; the drawer base comprises a drawer base bottom plate and a sliding plate, a lead screw and an electric device arranged on the drawer base bottom plate; the lead screw is in threaded connection with the sliding plate, and the axial rotation of the lead screw drives the sliding plate to reciprocate relative to the drawer base bottom plate, and the sliding plate drives the circuit breaker body to switch between a separated position, a test position and a connection position; the electric device comprises a motor and a gear mechanism, and the motor is drivingly connected with the lead screw through the gear mechanism; the universal circuit breaker further comprises a first switch element connected in series in the power supply circuit of the motor, and when the circuit breaker body is in the connection position, the circuit breaker body closes and simultaneously drives the first switch element to act, so as to disconnect the power supply circuit of the motor; the universal circuit breaker of the present invention has high use safety.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly to a universal circuit breaker. Background Art

[0002] The draw-out type universal circuit breaker is divided into two parts: the circuit breaker body and the drawer base. The drawer base is directly connected to the external power supply. Through the transmission of the drawer base, the circuit breaker body can be pushed into or pulled out of the drawer base. By switching the circuit breaker body between the separated, test, and connected positions in the drawer base, the connection and disconnection between the body and the drawer base can be achieved. As a large-capacity switching element, there are certain risks when pushing or pulling out the circuit breaker body. For example, the electric arc generated by circuit faults and secondary phenomena pose a great threat to the personal safety of surrounding operators; in addition, with the continuous increase in the capacity of the circuit breaker, the driving force required for pushing or pulling out operations is getting larger and larger. Therefore, in order to overcome the above deficiencies, a more reliable and effective drawer base transmission structure is needed, which can replace manual labor to operate the circuit breaker body to be pushed into or pulled out of the drawer base.

[0003] When the circuit breaker body is in the closed state at the connected position of the drawer base and the main circuit power supply is connected, if the body is moved out from the connected position of the drawer base to the test and separated positions, there is a hidden danger of incorrect operation causing the main circuit power failure and damage to personal and property safety. Therefore, in order to overcome the above deficiencies, a structure is needed to prevent the body from being manually or electrically moved out of the drawer base when the circuit breaker body is in the closed state at the connected position. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a universal circuit breaker with high usage safety.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A universal circuit breaker, which includes a drawer base 1 and a circuit breaker body 2 arranged in the drawer base 1; the drawer base 1 includes a drawer base bottom plate 3A and a slide plate 1B, a lead screw 4B, and an electric device arranged on the drawer base bottom plate 3A; the lead screw 4B is threadedly connected to the slide plate 1B, and the axial rotation of the lead screw 4B drives the slide plate 1B to reciprocate relative to the drawer base bottom plate 3A, and the slide plate 1B drives the circuit breaker body 2 to switch between the separated position, the test position, and the connected position; the electric device includes a motor 5B and a gear mechanism 6B, and the motor 5B is drivingly connected to the lead screw 4B through the gear mechanism 6B;

[0007] The universal circuit breaker further includes a first switch element connected in series in the power supply circuit of the motor 5B. When the circuit breaker body 2 is in the connected position, the circuit breaker body 2 closes and simultaneously drives the first switch element to act, disconnecting the power supply circuit of the motor 5B.

[0008] Preferably, the circuit breaker body 2 includes an energy storage operating mechanism, and the energy storage operating mechanism includes a rotating shaft assembly 1D drivingly connected to the moving contact of the circuit breaker body 2, and the rotating shaft assembly 1D is drivingly engaged with the first switch member.

[0009] Preferably, the rotating shaft assembly 1D includes a rotating shaft 10D, a switch driving arm 12D and a switch driving shaft 13D. One end of the switch driving arm 12D is connected to the rotating shaft 10D, and the other end is provided with the switch driving shaft 13D;

[0010] The drawer base 1 further includes two relatively arranged drawer base side plates respectively arranged at both ends of the drawer base bottom plate 3A, namely a first side plate 1A and a second side plate 2A; the drawer base 1 further includes a first lever 20D rotatably arranged on any one of the drawer base side plates. When the circuit breaker body 2 is in the connected position, the switch driving shaft 13D is drivingly connected to the first lever 20D;

[0011] The first switch member is arranged on the drawer base side plate on one side of the first lever 20D and is drivingly engaged with it. When the circuit breaker body 2 is closed in the connected position, the rotating shaft 10D rotates and drives the switch driving arm 12D to swing. The switch driving arm 12D drives the first lever 20D to swing through the switch driving shaft 13D, and the first lever 20D drives the first switch member to act, disconnecting the power supply circuit of the motor 5B.

[0012] Preferably, the middle of the first lever 20D is rotatably arranged through a first lever rotating shaft 21D, and one end is provided with a first lever engaging groove 23D. When the circuit breaker body 2 moves to the connected position, the switch driving shaft 13D enters the first lever engaging groove 23D and is drivingly engaged with it.

[0013] Preferably, the drawer base 1 further includes an operating handle 1C and a lead screw baffle 6D. The lead screw baffle 6D includes a handle insertion hole 62D provided thereon, and the handle insertion hole 62D is arranged offset from one end of the lead screw 4B; the operating handle 1C drives the lead screw baffle 6D to move to one side, so that the handle insertion hole 62D faces the lead screw 4B, and the operating handle 1C passes through the handle insertion hole 62D and is drivingly connected to the lead screw 4B; the drawer base 1 further includes a baffle limiting component 4D drivingly engaged with the first lever 20D. When the circuit breaker body 2 is closed in the connected position, the first lever 20D drives the baffle limiting component 4D to act, so that the baffle limiting component 4D is in limiting cooperation with the lead screw baffle 6D to prevent the lead screw baffle 6D from moving.

[0014] Preferably, the baffle limiting component 4D includes a second lever 43D, a stop driving arm 40D, and a baffle limiting block 42D. The middle of the second lever 43D is rotatably arranged on the side plate of the drawer seat. One end is drivingly connected to the first lever 20D, and the other end is drivingly connected to the stop driving arm 40D. The baffle limiting block 42D is arranged at the other end of the stop driving arm 40D and is in limiting cooperation with the screw baffle 6D.

[0015] Preferably, the first lever 20D is drivingly connected to the second lever 43D through a first lever return spring 7D, and the second lever 43D is connected to the side plate of the drawer seat through a second lever return spring 8D; the drawer seat 1 further includes a first lever limiting post 90D and a second lever limiting post 91D. The first lever return spring 7D makes the first lever 20D abut against the first lever limiting post 90D, and the second lever return spring 8D makes the second lever 43D abut against the second lever limiting post 91D.

[0016] Preferably, the first switch member is a micro switch SS1. The micro switch SS1 is fixedly arranged on the side plate of the drawer seat and is in driving cooperation with the first lever 20D or the second lever 43D of the drawer seat 1.

[0017] Preferably, the universal circuit breaker further includes a locking structure arranged on the bottom plate 3A of the drawer seat. The locking structure includes a guide rail 7B and a locking plate assembly 3B; the guide rail 7B is connected to the sliding plate 1B and moves synchronously. The guide rail 7B includes three locking grooves arranged in sequence along its axial direction, namely a first locking groove 730B, a second locking groove 731B, and a third locking groove 732B corresponding to the separated position, the test position, and the connection position respectively; the locking plate assembly 3B is in limiting cooperation with the locking groove to lock the guide rail 7B, and at the same time, the locking plate assembly 3B is in limiting cooperation with the screw rod 4B to lock the screw rod 4B;

[0018] The universal circuit breaker further includes a second switch member connected in series in the power supply circuit of the motor 5B. When the locking plate assembly 3B locks the guide rail 7B and the screw rod 4B respectively, it drives the second switch member to disconnect the power supply circuit of the motor 5B.

[0019] Preferably, the locking plate assembly 3B includes a second mounting plate 30B fixedly arranged on the bottom plate 3A of the drawer seat and a locking plate 31B arranged in parallel with the second mounting plate 30B; the second switch member is a micro switch SS2, which is arranged on the second mounting plate 30B, between the second mounting plate 30B and the locking plate 31B and is in driving cooperation with the locking plate 31B; when the locking plate assembly 3B locks the guide rail 7B and the screw rod 4B respectively, the locking plate 31B drives the micro switch SS2 to disconnect the power supply circuit of the motor 5B.

[0020] Preferably, the guide rail 7B is arranged on one side of the screw rod 4B and is parallel to it, and the electric device is arranged on the other side of the screw rod 4B.

[0021] Preferably, the power supply circuit of the motor 5B further includes a current commutation switch S1, a field commutation button SB1, and a remote commutation button SB2; the current commutation switch S1 includes a first common contact CT1 and a second common contact CT2, a first output contact T1 and a second output contact T2 that cooperate with the first common contact CT1, and a third output contact T3 and a fourth output contact T4 that cooperate with the second common contact CT2; the first common contact CT1 is connected to the first output contact T1 while the second common contact CT2 is connected to the third output contact T3, or the first common contact CT1 is connected to the second output contact T2 while the second common contact CT2 is connected to the fourth output contact T4; the first common contact CT1 is connected to the positive pole of the power supply through a first switch element, and the second common contact CT2 is connected to the negative pole of the power supply; the first output contact T1 and the third output contact T3 are respectively connected to the input ends of the remote commutation button SB2, the second output contact T2 and the fourth output contact T4 are respectively connected to the input ends of the field commutation button SB1, the first output end of the field commutation button SB1 and the second output end of the remote commutation button SB2 are both connected to an input end of the motor 5B through a second switch element, the second output end of the field commutation button SB1 and the first output end of the remote commutation button SB2 are both connected to the other input end of the motor 5B, and the polarities of the first output end of the commutation button SB1 and the second output end of the commutation button SB2 are opposite.

[0022] For the universal circuit breaker of the present invention, when the circuit breaker body 2 is in the connected position, closing the circuit breaker simultaneously drives the first switch element to act, disconnecting the power supply circuit of the motor 5B, thereby avoiding the situation that the circuit breaker body 2 is moved out of the connected position by the electric device when the circuit breaker body 2 is in the closed state, ensuring the safety of users' electricity consumption. In addition, for the universal circuit breaker of the present invention, its baffle limit assembly 4D is in limit cooperation with the lead screw baffle 6D when the circuit breaker body 2 is closed in the connected position, thereby avoiding the situation that the circuit breaker body 2 is moved out of the connected position by the operating handle 1C when the circuit breaker body 2 is in the closed state, ensuring the safety of users' electricity consumption. In addition, for the universal circuit breaker of the present invention, its second switch element can disconnect the power supply circuit of the motor 5B simultaneously when the locking plate assembly 3B locks the guide rail 7B and the lead screw 4B, thereby realizing precise control of the electric device and avoiding the situation that the locking plate assembly 3B still operates after completing the locking of the guide rail 7B and the lead screw 4B, damaging the locking structure. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the universal circuit breaker of the present invention, showing at least the assembly relationship between the drawer base and the circuit breaker body;

[0024] Figure 2 is a schematic structural diagram of the drawer base of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the drawer seat of the present invention, showing at least the assembly relationship between the unlocking electromagnet and the locking structure;

[0026] Figure 4 It is a schematic structural diagram of the drawer seat of the present invention, showing at least the assembly relationship between the locking reset structure and the locking structure of the first embodiment, and the assembly relationship between the indicating member and the guide rail of the first embodiment;

[0027] Figure 5 It is a schematic structural diagram of the reset operating handle of the present invention, showing at least the structure on one side of the reset operating handle;

[0028] Figure 6 It is a schematic structural diagram of the reset operating handle of the present invention, showing at least the structure on the other side of the reset operating handle;

[0029] Figure 7 It is a schematic structural diagram of the locking reset structure of the second embodiment of the present invention. At this time, the locking plate assembly locks the guide rail;

[0030] Figure 8 It is a schematic structural diagram of the locking reset structure of the second embodiment of the present invention. At this time, the locking reset structure drives the locking plate assembly to reset;

[0031] Figure 9 It is a schematic diagram of the assembly relationship among the lead screw, the clutch structure and the drive gear of the present invention;

[0032] Figure 10 It is an exploded structural diagram of the lead screw, the clutch structure and the drive gear of the present invention;

[0033] Figure 11 It is a schematic sectional view of the assembly relationship among the lead screw, the clutch structure and the drive gear of the present invention;

[0034] Figure 12 It is a schematic structural diagram of the operating handle of the present invention;

[0035] Figure 13A It is a schematic structural diagram of the locking structure of the first embodiment of the present invention. At this time, the locking plate is in limit fit with the second limiting wall;

[0036] Figure 13B It is a schematic structural diagram of the locking structure of the first embodiment of the present invention. At this time, the locking plate is in limit fit with the first limiting wall;

[0037] Figure 13C It is a schematic structural diagram of the locking structure of the first embodiment of the present invention. At this time, the locking plate is in limit fit with the locking groove;

[0038] Figure 13DIt is a schematic structural diagram of the locking structure according to the first embodiment of the present invention. At this time, after the locking plate is reset, it is limited and cooperated with the second limiting wall again;

[0039] Figure 14 It is a schematic structural diagram of the second mounting plate according to the first embodiment of the present invention;

[0040] Figure 15 It is a schematic cooperation diagram of the locking plate and the lead screw according to the first embodiment of the present invention;

[0041] Figure 16 It is a schematic structural diagram of the guide rail according to the first embodiment of the present invention;

[0042] Figure 16A It is another schematic structural diagram of the guide rail according to the first embodiment of the present invention;

[0043] Figure 17A It is a schematic structural diagram of the locking structure according to the second embodiment of the present invention. At this time, after the locking plate is reset, it is limited and cooperated with the side wall of the guide rail;

[0044] Figure 17B It is a schematic structural diagram of the locking structure according to the second embodiment of the present invention. At this time, the locking plate begins to cooperate with the second transition boss;

[0045] Figure 17C It is a schematic structural diagram of the locking structure according to the second embodiment of the present invention. At this time, the locking plate is opposite to the third locking groove;

[0046] Figure 17D It is a schematic structural diagram of the locking structure according to the second embodiment of the present invention. At this time, the locking plate is limited and cooperated with the third locking groove;

[0047] Figure 18 It is an exploded structural diagram of the locking structure according to the second embodiment of the present invention;

[0048] Figure 19 It is a schematic structural diagram of the guide rail according to the second embodiment of the present invention;

[0049] Figure 20 It is a schematic structural diagram of the sliding plate of the present invention;

[0050] Figure 21A It is a schematic structural diagram of the locking structure according to the third embodiment of the present invention. At this time, the locking plate and the unlocking plate are reset, and the unlocking hook is limited and cooperated with the guide rail;

[0051] Figure 21B It is a schematic structural diagram of the locking structure according to the third embodiment of the present invention. At this time, the unlocking hook releases the limit cooperation with the guide rail from the first unlocking groove;

[0052] Figure 21CIt is a schematic structural diagram of the locking structure according to the third embodiment of the present invention. At this time, the locking plate hook is in limit fit with the first locking groove;

[0053] Figure 21D It is a schematic structural diagram of the locking structure according to the third embodiment of the present invention. At this time, the locking plate and the unlocking plate are reset again, and the unlocking hook is in limit fit with the guide rail;

[0054] Figure 22A It is an exploded structural diagram of the locking structure according to the third embodiment of the present invention;

[0055] Figure 22B It is a schematic diagram of the cooperation relationship between the unlocking hook and the guide rail of the present invention;

[0056] Figure 23 It is a schematic structural diagram of the indicating member according to the second embodiment of the present invention;

[0057] Figure 24 It is a topological diagram of the power supply circuit of the motor of the present invention;

[0058] Figure 25 It is a schematic structural diagram of the energy storage operating mechanism of the circuit breaker body of the present invention, at least showing the structure of the rotating shaft assembly;

[0059] Figure 26A It is a schematic structural diagram of the energy storage operating mechanism of the circuit breaker body of the present invention. At this time, the circuit breaker body is in the open state;

[0060] Figure 26B It is a schematic structural diagram of the energy storage operating mechanism of the circuit breaker body of the present invention. At this time, the circuit breaker body is in the closed state;

[0061] Figure 27 It is a schematic structural diagram of the drawer base of the present invention, at least showing the assembly relationship of the first lever, the second lever, and the baffle limit assembly;

[0062] Figure 28A It is the assembly relationship of the first lever, the second lever, and the baffle limit assembly of the present invention. At this time, the circuit breaker body is in the open state;

[0063] Figure 28B It is the assembly relationship of the first lever, the second lever, and the baffle limit assembly of the present invention. At this time, the circuit breaker body is in the closed state;

[0064] Figure 29 It is a schematic structural diagram of the screw rod baffle of the present invention;

[0065] Figure 30 It is a schematic diagram of the assembly relationship between the second switch member and the locking plate of the present invention. Detailed implementation manners

[0066] The following is combined with the attachedFigures 1 - 30 The embodiments given further illustrate the specific implementation manners of the universal circuit breaker of the present invention. The universal circuit breaker of the present invention is not limited to the descriptions of the following embodiments.

[0067] As Figure 1 shown, the universal circuit breaker of the present invention includes a drawer base 1 and a circuit breaker body 2 disposed inside the drawer base 1. As Figure 2 、 13A shown in FIGS. 10-13D, 17A-17D and 21A-21D, the drawer base 1 includes a drawer base bottom plate 3A, a lead screw 4B, a slide plate 1B, a locking structure, an operating handle 1C (as Figure 12 shown, it should be noted that the operating handle 1C shown in the figure is actually only the end structure linked to the lead screw 4B of the drawer base 1, and it also includes a rocker structure extending outwards. The user holds and rotates the rocker structure to drive the end structure so as to drive the lead screw 4B to rotate) and an electric device; one end of the lead screw 4B is a lead screw threaded portion 40B threadedly connected to the slide plate 1B (see Figure 9 ), and the other end is a lead screw driven portion. The lead screw driven portion is respectively in driving cooperation with the electric device and the operating handle 1C. The slide plate 1B is in driving connection with the circuit breaker body 2. The operating handle 1C or the electric device drives the lead screw 4B to rotate (the lead screw 4B rotates axially), and then drives the slide plate 1B to reciprocate relative to the drawer base bottom plate 3A. The slide plate 1B drives the circuit breaker body 2 to switch between a separating position, a test position and a connecting position; a clutch structure is disposed between the electric device and the lead screw 4B, and the driving cooperation between the electric device and the lead screw 4B can be released through the clutch structure, that is, the lead screw 4B cannot be driven to rotate by the electric device; the locking structure includes a locking plate assembly 3B and a guide rail 7B. One end of the guide rail 7B is connected to the slide plate 1B and moves synchronously. The guide rail 7B includes three locking grooves sequentially arranged along its axial direction, which are a first locking groove 730B, a second locking groove 731B and a third locking groove 732B corresponding to the separating position, the test position and the connecting position respectively. When the circuit breaker body 2 is respectively located at the separating position, the test position and the connecting position, the locking plate assembly 3B is respectively in limiting cooperation with the first locking groove 730B, the second locking groove 731B and the third locking groove 732B to lock the guide rail 7B; while locking the guide rail 7B, the locking plate assembly 3B is also in limiting cooperation with the lead screw 4B to lock the lead screw 4B.

[0068] An improvement point of the universal circuit breaker of the present invention lies in the clutch structure: As Figures 9 - 11As shown in the figure, the electric device includes a driving gear 60B sleeved on the driven part of the lead screw 4B, and a clutch structure arranged on the lead screw 4B. The clutch structure is simultaneously in limit cooperation with the lead screw 4B and the driving gear 60B, so that the lead screw 4B and the driving gear 60B are linked; a lead screw operation hole 4-0B is provided in the middle of the free end of the driven part of the lead screw. When the operation handle 1C is inserted into the lead screw operation hole 4-0B, the driving clutch structure is disengaged from the limit cooperation with the driving gear 60B, so that the lead screw 4B can rotate relative to the driving gear 60B. For the universal circuit breaker of the present invention, when the clutch structure is simultaneously in limit cooperation with the lead screw 4B and the driving gear 60B, the linkage between the lead screw 4B and the driving gear 60B is realized. Inserting the operation handle 1C into the lead screw operation hole 4-0B can drive the clutch structure to disengage from the limit cooperation with the driving gear 60B, so that the universal circuit breaker of the present invention can be compatible with both manual and electric operations at the same time, and the two do not affect each other. When the user drives the lead screw 4B to axially rotate through the operation handle 1C, there is no need to overcome the resistance of the electric device, and the operation is more relaxed and smooth; the driving gear 60B is sleeved on the driven part of the lead screw and the clutch structure is arranged on the driven part of the lead screw, the structure is more compact, the principle is simpler, and the cooperation is more reliable.

[0069] Another improvement point of the universal circuit breaker of the present invention lies in the locking structure. The locking structure has the following three implementation manners, which are respectively:

[0070] As Figures 13A - 16 shown, it is the first implementation manner of the locking structure.

[0071] As Figures 13A - 13D shown, the locking plate assembly 3B includes a locking plate 31B that cooperates with the locking groove to lock the guide rail 7B. The locking plate 31B is perpendicular to the moving direction of the guide rail 7B; as Figure 16 shown, the guide rail 7B includes a first limiting wall 73B and a second limiting wall 74B arranged along its axial direction, a first transition boss 730-731B arranged between the first locking groove 730B and the second locking groove 731B, and a second transition boss 731-732B arranged between the second locking groove 731B and the third locking groove 732B; the first limiting wall 73B is stacked on one side of the second limiting wall 74B, and the three locking grooves are sequentially arranged on the first limiting wall 73B. The first limiting wall 73B includes a first limiting wall 73-0B extending along its axial direction, and the second limiting wall 74B includes a second limiting wall 74-0B extending along its axial direction; as Figures 13A - 13DAs shown, when the locking plate 31B is in limit cooperation with the second limit wall 74-0B, the guide rail 7B moves relative to the locking plate 31B. After the first transition boss 730-731B or the second transition boss 732 drives the locking plate 31B to disengage from the second limit wall 74-0B, it is in limit cooperation with the first limit wall 73-0B. When the locking plate 31B is opposite to a certain locking groove, the locking plate 31B (under the action of the first locking spring 30-31B) inserts into the locking groove and locks the guide rail 7B. When an external force causes the locking plate 31B to move back to its original position, the locking plate 31B is in limit cooperation with the second limit wall 74-0B again. Further, as Figure 16 shown, the guide rail 7B includes a guide rail main body 70B, a first limit wall 73B, a second limit wall 74B, and the guide rail main body 70B are stacked in sequence to form a three-level stepped structure; the first transition boss 730-731B and the second transition boss 731-732B are arranged on the upper side of the guide rail main body 70B, and the height is not lower than that of the second limit wall 74B (as Figure 16 shown, the first transition boss 730-731B and the second transition boss 731-732B can have the same height as the second limit wall 74B; or, as Figure 16A shown, the first transition boss 730-731B and the second transition boss 731-732B can also be higher than the second limit wall 74B). For the universal circuit breaker of the present invention, its locking structure can realize the locking and unlocking of the guide rail 7B only through the cooperation of the locking plate 31B and the guide rail 7B. The structure is simple and the operation is convenient, which is beneficial to simplifying the structure of the drawer seat 1 and facilitating the installation and operation of the drawer seat 1.

[0072] As Figures 17A - 19 shown, it is the second implementation manner of the locking structure.

[0073] As Figures 17A - 17D shown, the locking plate structure 3B includes a locking plate 31B and a locking hook 32B. The locking hook 32B is arranged on the locking plate 31B and can move in a single dimension relative to the locking plate 31B. The locking plate 31B is perpendicular to the moving direction of the guide rail 7B, and the locking hook 32B is in limit cooperation with the locking groove to lock the guide rail 7B; as Figure 19 shown, the guide rail 7B further includes a first transition boss 730-731B arranged between the first locking groove 730B and the second locking groove 731B and a second transition boss 731-732B arranged between the second locking groove 731B and the third locking groove 732B; as Figures 17A - 17DAs shown, when the locking hook 32B is in limit fit with a certain locking groove, an external force causes the locking plate 31B to move and reset. After the locking plate 31B drives the locking hook 32B out of the locking groove, the locking hook 32B moves relative to the locking base 31B in the first direction and is in limit fit with the side wall of the guide rail 7B; when the guide rail 7B moves relative to the locking plate 31B, the first transition boss 730-731B or the second transition boss 731-732B drives the locking hook 32B to move relative to the locking plate 31B in the second direction. When the locking hook 32B is opposite to another locking groove, the locking plate 31B drives the locking hook 32B to move and insert into the locking groove. Further, as Figures 17A - 17D shown, the locking hook 32B can only move up and down relative to the locking plate 31B; an external force causes the locking plate 31B to move and reset. After the locking plate 31B drives the locking hook 32B out of the locking groove, the locking hook 32B moves down relative to the locking plate 31B until the lower end of the locking hook 32B crosses the bottom wall of the locking groove and is in limit fit with the side wall of the guide rail 7B; the first transition boss 730-731B or the second transition boss 731-732B drives the locking hook 32B to move up relative to the locking plate 31B until the lower end of the locking hook 32B is not lower than the bottom wall of the locking groove. For the universal circuit breaker of the present invention, its locking structure can achieve reliable locking of the guide rail 7B, ensure that the circuit breaker body 2 is reliably locked in the separated position, test position or connection position, and ensure the reliability of the operation of the universal circuit breaker.

[0074] As Figures 21A - 22B shown, it is the third implementation manner of the locking structure.

[0075] As Figures 21A - 22B shown, the locking plate assembly 3B includes a locking plate 31B and an unlocking plate 33B. The unlocking plate 33B is arranged on the locking plate 31B and is movably connected thereto. The locking plate 31B is perpendicular to the moving direction of the guide rail 7B, and the locking plate 31B cooperates with the locking groove to lock the guide rail 7B; the unlocking plate 33B includes an unlocking hook 331B, and the locking plate 31B includes a locking plate hook 316-2B; as shown in Figure 22, the guide rail 7B further includes a first unlocking groove 750B provided between the first locking groove 730B and the second locking groove 731B and a second unlocking groove 751B provided between the second locking groove 731B and the third locking groove 732B; as Figures 21A - 21DAs shown, when the locking plate 31B locks the guide rail 7B, the locking plate hook 316-2B is in limit fit with a locking groove. The unlocking hook 331B is located on the first side of the guide rail 7B. An external force causes the locking plate 31B to move back to its original position. The locking plate 31B drives both the locking plate hook 316-2B and the unlocking hook 331B to move to the second side of the guide rail 7B. The unlocking hook 331B is in limit fit with the guide rail 7B. The guide rail 7B moves relative to the locking plate 31B. The unlocking hook 331B is disengaged from the limit fit with the guide rail 7B at the first unlocking groove 750B or the second unlocking groove 751B or the locking groove and moves to the first side of the guide rail 7B. The locking plate hook 316-2B is in limit fit with the guide rail 7B. When the locking plate hook 316-2B faces another locking groove, the locking plate hook 316-2B inserts into this locking groove to lock the guide rail 7B.

[0076] Preferably, as shown in Figure 22, the depths of the first unlocking groove 750B and the second unlocking groove 751B are less than the depth of the locking groove; as Figure 22B shown, the lower end of the locking plate 316-2B protrudes below the lower end of the unlocking hook 331B.

[0077] Preferably, as Figure 22B shown, when the unlocking hook 331B is in limit fit with the guide rail 7B, there is a gap between the locking plate hook 316-2B and the guide rail 7B.

[0078] For the universal circuit breaker of the present invention, its locking structure locks the guide rail 7B through the locking plate 31B and unlocks the guide rail 7B through the unlocking plate 33B, achieving reliable locking and unlocking of the guide rail 7B, ensuring that the circuit breaker body 2 is reliably locked in the separated position, the test position or the connected position, and guaranteeing the reliability of the operation of the universal circuit breaker.

[0079] Another improvement point of the universal circuit breaker of the present invention is that the universal circuit breaker further includes an indicating member 8B for indicating the current position of the circuit breaker body. As Figure 4 and 23 shown, the guide rail 7B is drivingly connected to the indicating member 8B. When the sliding plate 1B reciprocally slides to drive the circuit breaker body 2 to switch between the separated position, the test position and the connected position, the guide rail 7B drives the indicating member 8B to rotate.

[0080] For example, the indicating member 8B can be drivingly connected to the guide rail 7B in the following two ways:

[0081] The first way: as Figure 4 shown, the indicating member 8B is of a cylindrical structure. The guide rail 7B is drivingly connected to the indicating member 8B through a transmission connecting rod 7-8B to drive the indicating member 8B to axially rotate.

[0082] It should be noted that the indicating member 8B can also be cooperated in a manner of meshing a rack with a gear. The gear is coaxially linked with the indicating member 8B, and the rack is connected to the guide rail 7B and moves synchronously.

[0083] The second way is as Figure 23 shown. The drawer base 1 further includes a drawer base panel 5A. An indicating member mounting hole is provided on the drawer base panel 5A. The indicating member 8B is of a cylindrical structure and is rotatably arranged in the indicating member mounting hole. The guide rail 7B is connected to the indicating member 8B through a flexible connecting member. An indicating member return torsion spring is provided between the indicating member 8B and the drawer base panel 5A. Further, the flexible connecting member is a steel wire or a nylon rope, and the indicating member 8B includes an indicating member winch for coiling the flexible connecting member.

[0084] For the universal circuit breaker of the present invention, the structure of the indicating member 8B is simple and the installation is convenient, which is beneficial to simplifying the structure of the drawer base 1. The indicating member 8B is drivingly connected to the guide rail 7B and can accurately reflect the current position of the circuit breaker body 2, avoiding false alarms.

[0085] Another improvement point of the universal circuit breaker of the present invention lies in the control of the electric device, as Figure 2 、 Figures 24 - 30 shown. The electric device includes a motor 5B and a gear mechanism 6B. The motor 5B is drivingly connected to the lead screw 4B through the gear structure 6B. The universal circuit breaker further includes a first switching member connected in series in the power supply circuit of the motor 5B. When the circuit breaker body 2 is in the connected position, the circuit breaker body 2 closes and simultaneously drives the first switching member to act, disconnecting the power supply circuit of the motor 5B. Further, as Figures 25 - 28B shown, the circuit breaker body 2 includes an energy storage operating mechanism. The energy storage operating mechanism includes a rotating shaft assembly 1D drivingly connected to the moving contact of the circuit breaker body 2. The rotating shaft assembly 1D is drivingly cooperated with the first switching member. For the universal circuit breaker of the present invention, when the circuit breaker body 2 is in the connected position, it closes and simultaneously drives the first switching member to act, disconnecting the power supply circuit of the motor 5B, thereby avoiding the situation that the circuit breaker body 2 is moved out of the connected position through the electric device when the circuit breaker body 2 is in the closed state, ensuring the user's electricity safety.

[0086] Preferably, as Figure 27 and 29 shown, the drawer base 1 further includes a lead screw baffle 6D. The lead screw baffle 6D includes a handle insertion hole 62D provided thereon. The handle insertion hole 62D is arranged offset from one end of the lead screw 4B. The operating handle 1C drives the lead screw baffle 6D to move to one side, making the handle insertion hole 62D opposite to the lead screw 4B. The operating handle 1C passes through the handle insertion hole 62D and is drivingly connected to the lead screw 4B. As Figures 27 - 28BAs shown, the drawer base 1 further includes a baffle limiting component 4D that is drivingly engaged with the first lever 20D. When the circuit breaker body 2 is closed in the connected position, the rotating shaft component 1D drives the baffle limiting component 4D to act, and the baffle limiting component 4D is in limiting cooperation with the screw baffle 6D to prevent the screw baffle 6D from acting. For the universal circuit breaker of the present invention, its baffle limiting component 4D is in limiting cooperation with the screw baffle 6D when the circuit breaker body 2 is closed in the connected position, thereby avoiding the situation that the circuit breaker body 2 is moved out of the connected position by the operating handle 1C when the circuit breaker body 2 is in the closed state, ensuring the user's electricity consumption safety.

[0087] Preferably, as Figure 24 and 30 As shown, the universal circuit breaker of the present invention further includes a second switch component connected in series in the power supply circuit of the motor 5B. When the locking plate component 3B locks the guide rail 7B and the screw rod 4B respectively, it drives the second switch component to disconnect the power supply circuit of the motor 5B. For the universal circuit breaker of the present invention, its second switch component can disconnect the power supply circuit of the motor 5B simultaneously when the locking plate component 3B locks the guide rail 7B and the screw rod 4B, thereby realizing the precise control of the electric device and avoiding the situation that the locking plate component 3B still works after completing the locking of the guide rail 7B and the screw rod 4B, damaging the locking structure.

[0088] The following will further illustrate the universal circuit breaker of the present invention in conjunction with the specification drawings and specific embodiments.

[0089] As Figures 1 - 16 and 23 shown, it is the first embodiment of the universal circuit breaker of the present invention.

[0090] As Figure 1 As shown, the universal circuit breaker of the present invention includes a drawer base 1 and a circuit breaker body 2 arranged in the drawer base 1.

[0091] As Figure 1 As shown, the similarities between the drawer base 1 and the prior art are as follows: both include a drawer base bottom plate 3A, drawer base side plates, and a zero-flyover arc cover 4A. The drawer base side plates include two relatively arranged side plates, namely the first side plate 1A and the second side plate 2A. The drawer base bottom plate 3A, the zero-flyover arc cover 4A, the first side plate 1A, and the second side plate 2A jointly enclose a square assembly space, and the circuit breaker body 2 is arranged in this square assembly space.

[0092] As Figure 2As shown, the drawer seat 1 also includes a slide plate 1B, a screw rod 4B, a mounting plate, a locking structure, an electric device and an operating handle 1C; the mounting plate is fixedly arranged on the bottom plate 3A of the drawer seat, and the screw rod 4B is mounted on the mounting plate and is rotatably connected thereto; the electric device includes a motor 5B and a gear mechanism 6B, and the motor 5B is driven and connected to the screw rod 4B through the gear mechanism 6B; the slide plate 1B is slidably arranged on the upper side of the bottom plate 3A of the drawer seat, one end of the screw rod 4B is a screw rod threaded portion 40B threadedly connected to the slide plate 1B, and the other end is a screw rod driven portion, which are respectively driven and matched with the electric device and the operating handle 1C, and the electric device or the operating handle 1C drives the screw rod 4B to rotate axially (the screw rod 4B rotates axially), and drives the slide plate 1B to slide back and forth (move) relative to the bottom plate 3A of the drawer seat to drive the circuit breaker body 2 to switch between the separation position, the test position and the connection position; A clutch structure is provided between the electric device and the lead screw 4B, and the driving cooperation between the electric device and the lead screw 4B can be released by the clutch structure, that is, the lead screw 4B cannot be driven axially by the electric device; the locking structure includes a locking plate assembly 3B and a guide rail 7B, the guide rail 7B is connected to the slide plate 1B and moves synchronously, the guide rail 7B includes three locking grooves arranged along its axial direction, which are a first locking groove 730B, a second locking groove 731B and a third locking groove 732B corresponding to the separation position, the test position and the connection position respectively, when the circuit breaker body 2 is respectively located in the separation position, the test position and the connection position, the locking plate assembly 3B is respectively limitedly matched with the first locking groove 730B, the second locking groove 731B and the third locking groove 732B to lock the guide rail 7B; while locking the guide rail 7B, the locking plate assembly 3B also limits and cooperates with the lead screw 4B to lock the lead screw 4B.

[0093] Preferably, Figure 4 , 9 -11 is an embodiment of the clutch structure.

[0094] like Figure 4 , 9 -11, the gear mechanism 6B of the electric device includes a driving gear 60B mounted on the screw driven part of the screw 4B and a clutch structure arranged on the screw 4B, and the clutch structure is simultaneously limited by the screw 4B and the driving gear 60B to enable the screw 4B and the driving gear 60B to be linked; a screw operating hole 4-0B is provided in the middle of the free end of the screw driven part, and the operating handle 1C is inserted into the screw operating hole 4-0B and drives the clutch structure to release the limit cooperation with the driving gear 60B, so that the screw 4B can rotate relative to the driving gear 60B.

[0095] Preferably, Figures 9 - 11As shown, the clutch structure includes a clutch member 44B slidably disposed on a lead screw 4B, and a clutch member return spring 45B disposed between the clutch member 44B and the lead screw 4B. The clutch member return spring 45B applies a force to the clutch member 44B to keep the clutch member 44B in limiting cooperation with the driving gear 60B (when the clutch member 44B is in limiting cooperation with the gear 60B, the lead screw 4B and the driving gear 60B rotate synchronously). Further, as Figure 11 shown, the driven part of the lead screw includes a clutch member track hole 43B provided in the middle thereof and extending along the axial direction of the lead screw 4B, and the clutch member 44B is slidably disposed in the clutch member track hole 43B; the driving gear 60B includes at least one driving gear limiting groove 602B provided at one end thereof; the clutch member 44B is in limiting cooperation with the lead screw 4B through the clutch member track hole 43B, and is in limiting cooperation with the driving gear 60B through the driving gear limiting groove 602B. After the driving gear 60B is connected to the lead screw 4B, the driving gear limiting groove 602B corresponds to the clutch member track hole 43B, so that the clutch member 44B slides in the clutch member track hole 43B under the drive of the clutch member return spring 45B and enters the driving gear limiting groove 602B to limit the driving gear 60B. Further, as Figure 11 shown, the two openings of the clutch member track hole 43B are respectively located at the radial two ends of the driven part of the lead screw. The two ends of the clutch member 44B respectively protrude on both sides of the two openings of the clutch member track hole 43B. The driving gear 60B includes two groups of driving gear limiting grooves 602B. The two driving gear limiting grooves 602B of each group of driving gear limiting grooves 602B are respectively located at the radial two ends of the driving gear 60B and are respectively in limiting cooperation with the two ends of the clutch member 44B.

[0096] Preferably, as Figure 11 shown, the lead screw 4B includes a clutch member return spring groove 4-2B provided in the middle of the driven part of the lead screw and communicating with the clutch member track hole 43B at one end. The clutch member return spring groove 4-2B extends along the axial direction of the lead screw 4B. One end of the clutch member return spring 45B is disposed in the clutch member spring groove 4-2B, and the other end is in limiting cooperation with the clutch member 44B, thereby ensuring the reliability of the installation of the clutch member return spring 45B. Further, as Figure 10 and 11 shown, the clutch structure further includes a clutch member guide post 46B. One end of the clutch member guide post 46B is connected to the clutch member 44B, and the other end is inserted into the clutch member return spring 45B to be in limiting cooperation therewith and this end is located in the return spring groove 4-2B. The clutch member guide post 46B is in limiting cooperation with the return spring groove 4-2B, thereby ensuring the reliability and stability of the movement track of the clutch member 44B, and thus ensuring the reliable operation of the clutch structure and avoiding the situation that the cooperation between the clutch member 44B and the driving gear 60B fails due to the deviation of the clutch member 44B.

[0097] Preferably, asFigure 10 As shown, the clutch member 44B and the clutch member guide post 46B form a T-shaped structure. One end of the clutch member guide post 46B is connected to the middle of the clutch member 44B, and both ends of the clutch member 44B extend into the clutch member track hole 43B for sliding fit.

[0098] Preferably, as Figure 10 shown, the clutch member 44B is a T-shaped structure, including a clutch member engaging portion 440B and a clutch member connecting portion 441B disposed at a right angle to the middle of the engaging portion 440B; one end of the clutch member guide post 46B is provided with a clutch member guide post hole, and the clutch member connecting portion 441B is inserted into the clutch member guide post hole to achieve the connection between the clutch member 44B and the clutch member guide post 46B. It should be noted that the clutch member 44B and the clutch member guide post 46B can also be provided as an integral structure, and the structure of the lead screw 4B also needs to be adjusted accordingly to adapt to the installation requirements of the integral clutch member 44B and the clutch member guide post 46B, which will lead to the complication of the lead screw 4B. The universal circuit breaker of the present invention preferably uses a split clutch member 44B and a clutch member guide post 46B. On the one hand, it can reduce the complexity of the component structure, thereby reducing the production difficulty. On the other hand, its assembly is more convenient and flexible.

[0099] Preferably, as Figure 10 and 11 shown, the lead screw 4B further includes a first annular stop 480B and a first annular groove 481B respectively provided on the driven part of the lead screw. A gear shaft portion 482B is formed between the first annular stop 480B and the first annular groove 481B. The drive gear 602B is sleeved on the gear shaft portion 482B, and the gear limit clip 47B is disposed in the first annular groove 481B to limit the drive gear 60B between the first annular stop 480B and the gear limit clip 47B. Further, as Figure 10 and 11 shown, both ends of the clutch member track hole 43B are respectively located on both sides of the first annular stop 480B.

[0100] Preferably, as Figure 10 shown, as an embodiment of the drive gear 60B, the drive gear 60B includes a gear end 600B and a mating end 601B. A drive gear limit groove 602B is provided on the mating end 601B, and a drive gear assembly hole 603B is provided in the middle of the drive gear 60B.

[0101] Specifically, as Figure 11In the direction shown, the clutch part return spring groove 4-2B, the clutch part track hole 43B, and the lead screw operation hole 4-0B are sequentially arranged from left to right along the axial direction of the lead screw 4B in the middle of the driven part of the lead screw. The left end of the clutch part track hole 43B communicates with the right end of the clutch part return spring groove 4-2B, and the right end of the clutch part track hole 43B communicates with the lead screw operation hole 4-0B. The clutch part return spring 45B keeps the clutch part 44B in limit fit with the right end of the clutch part track hole 43B and the drive gear 60B. When the operating handle 1C is inserted into the lead screw operation hole 4-0B, it can drive the clutch part 44B to move leftward against the force of the clutch part return spring 45B, so that the clutch part 44B is disengaged from the limit fit with the drive gear 60B. Further, as Figure 11 In the direction shown, the left and right ends of the clutch part track hole 43B are respectively located on the left and right sides of the first annular retaining platform 480B. Further, the cross-sectional shape of the clutch part 44B can not only be circular, but also various shapes such as oval; when it is circular, as Figure 11 In the direction shown, the width of the part of the clutch part track hole 43B located on the right side of the first annular retaining platform 480 is greater than the outer diameter of the clutch part 44B, so as to ensure that the entire diameter of the clutch part 44B is embedded in the drive gear limit groove 602B of the drive gear 60B, and ensure the reliability of the limit between the clutch part 44B and the drive gear 60B.

[0102] Preferably, as Figure 4 、 9 -11 shown, the following is an assembly method of the lead screw 4B.

[0103] As Figure 9 shown, the lead screw 4B further includes a second annular retaining platform 411B and a third annular boss 413B arranged between the lead screw thread part 40B and the driven part of the lead screw. A lead screw mounting shaft part 412B is formed between the second annular retaining platform 411B and the third annular retaining platform 413B; the mounting plate includes a first mounting plate 2B, and the lead screw 4B is rotationally connected to the first mounting plate 2B through the lead screw mounting shaft part 412B, and the second annular retaining platform 411B and the third annular retaining platform 413B are respectively arranged on both sides of the first mounting plate 2B and are respectively in limit fit with the first mounting plate 2B.

[0104] Preferably, as Figure 12 shown, it is an implementation manner of the cooperation between the operating handle 1C and the lead screw 4B.

[0105] As Figure 12As shown, the operating handle 1C includes a handle body 10C, a limiting ball 12C, and a limiting ball return spring 11C. The handle body 10C is a polygonal columnar structure, and one end thereof is provided with a limiting ball assembly groove 100C. The limiting ball return spring 11C is arranged in the limiting ball assembly groove 100C, and the limiting ball 12C is limited in the limiting ball assembly groove 100C. The limiting ball return spring 11C applies a force to the limiting ball 12C so that one end of the limiting ball 12C protrudes outside the limiting ball assembly groove 100C; As Figure 10 and 11 shown, the screw rod operation hole 4-0B is a polygonal hole, and at least one limiting ball mating hole 49B is provided on its side wall; after the operating handle 1C is inserted into the screw rod operation hole 4-0B and the clutch member 44B is disengaged from the limiting fit with the driving gear 60B, the limiting ball 12C is in limiting fit with the limiting ball mating hole 49B. Thus, after the user operates the handle 1C to disengage the clutch member 44B from the limiting fit with the driving gear 60B, there is no need to always apply a thrust to the operating handle 1C to keep it in this position, which is convenient for operation. Further, as Figure 10 and 11 shown, the limiting ball mating holes 49B are provided on each side wall of the screw rod operation hole 4-0B, so that the limiting fit between the limiting ball 12C and the limiting ball mating hole 49B can be conveniently and quickly achieved without the user having to distinguish the position of the limiting ball mating hole 49B.

[0106] Preferably, as Figures 13A - 16A shown, it is the first embodiment of the locking structure.

[0107] As Figures 13A - 13D shown, the locking structure includes a guide rail 7B and a locking plate assembly 3B; the guide rail 7B is connected to the sliding plate 1B and moves synchronously. The guide rail 7B includes three locking grooves arranged in sequence along its axial direction, which are a first locking groove 730B, a second locking groove 731B, and a third locking groove 732B corresponding to the separation position, the test position, and the connection position respectively; the locking plate assembly 3B includes a locking plate 31B that cooperates with the locking groove to lock the guide rail 7B, and the locking plate 31B is perpendicular to the moving direction of the guide rail 7B; the locking plate assembly 3B includes a locking plate 31B, and the moving direction of the locking plate 31B is perpendicular to the moving direction of the guide rail 7B; As Figure 16As shown, the guide rail 7B further includes a first limiting wall 73B and a second limiting wall 74B arranged along its axial direction, a first transition boss 730-731B disposed between the first locking groove 730B and the second locking groove 731B, and a second transition boss 731-732B disposed between the second locking groove 731B and the third locking groove 732B; the first limiting wall 73B is stacked on one side of the second limiting wall 74B, and the three locking grooves are sequentially arranged on the first limiting wall 73B. The first limiting wall 73B includes a first limiting wall 73-0B extending along its axial direction, and the second limiting wall 74B includes a second limiting wall 74-0B extending along its axial direction. As Figures 13A - 13D As shown, when the locking plate 31B is in limiting cooperation with the second limiting wall 74-0B, the guide rail 7B moves relative to the locking plate 31B. After the first transition boss 730-731B or the second transition boss 731-732B drives the locking plate 31B to disengage from the second limiting wall 74-0B and is in limiting cooperation with the first limiting wall 73-0B, when the locking plate 31B is opposite to a certain locking groove, the locking plate 31B is inserted into the locking groove to lock the guide rail 7B. When an external force causes the locking plate 31B to move and reset, the locking plate 31B is in limiting cooperation with the second limiting wall 74-0B again.

[0108] Preferably, as Figure 16 and 16A As shown, the guide rail 7B includes a guide rail main body 70B, and the first limiting wall 73B, the second limiting wall 74B and the guide rail main body 70B are sequentially stacked together to form a three-step structure; the first limiting wall 73-0B and the second limiting wall 74-0B are arranged at intervals (the first limiting wall 73-0 and the second limiting wall 74-0B are preferably arranged in parallel, and there may also be an included angle of a certain angle between the two, and the included angle is 0 to 45°), and are located on the same side of the first limiting wall 73B and the second limiting wall 74B; the first transition boss 730-731B and the second transition boss 731-732B are disposed on the upper side of the guide rail main body 70B, and the height is not lower than the height of the second limiting wall 74B (as Figure 16 As shown, the heights of the first transition boss 730-731B and the second transition boss 731-732B are the same as the height of the second limiting wall 74B; as Figure 16A As shown, the heights of the first transition boss 730-731B and the second transition boss 731-732B are higher than the height of the second limiting wall 74B).

[0109] Specifically, as Figures 13A - 13D As shown in the direction, the guide rail 7B can move back and forth relative to the locking plate 31B, the locking plate 31B can move left and right relative to the guide rail 7B, and the locking plate 31B can swing slightly relative to the guide rail 7B; as Figure 13AIn the shown direction, the left end of the locking plate 31B is in limiting cooperation with the second limiting wall 74B, and the guide rail 7B starts to move forward relative to the locking plate 31B, as Figure 13B shown in the direction, the first transition boss 730-731B pushes against the locking plate 31B, causing it to rotate clockwise slightly, and the locking plate 31B disengages from the second limiting wall 74-0B and is in limiting cooperation with the first limiting wall 73-0B, as Figure 13C shown, the guide rail 7B continues to move forward until the locking plate 31B is opposite to a locking groove (as Figure 13C shown, it is the second locking groove 731B), the locking plate 31B moves to the left and inserts into the locking groove to lock the guide rail 7B. When unlocking is required, an external force causes the locking plate 31B to move to the right and rotate counterclockwise slightly, and the locking plate 31B moves out of the locking groove and is in limiting cooperation with the second limiting wall 74-0B again, entering the state as Figure 13D shown.

[0110] Preferably, as Figure 16 and 16A shown, both the first transition boss 730-731B and the second transition boss 731-732B are isosceles trapezoidal bosses (as Figure 16 shown) or arc-shaped bosses or triangular bosses (as Figure 16A shown); one end of the first transition boss 730-731B and the second transition boss 731-732B are respectively connected to the second limiting wall 74-0B.

[0111] Preferably, as Figure 16 shown, the guide rail 7 further includes two stroke limiting platforms 76B respectively arranged at both ends thereof, and the two stroke limiting platforms 76B are respectively in limiting cooperation with the locking plate 31B to prevent the guide rail 7B from moving excessively relative to the locking plate 31B, resulting in the situation of their disengagement.

[0112] Preferably, as Figure 13A shown, the locking structure further includes a first locking spring 30-31B with one end connected to the locking plate 31B and the other end fixedly arranged, and the first locking spring 30-31B applies a force to the locking plate 31B to make the locking plate 31B tend to the direction where the guide rail 7B is located. Further, as Figure 13A shown, the locking plate 31B includes a locking plate main body 31-0B and a first locking end 31-1B arranged at one end of the locking plate main body 31-0B. A locking plate guide rail avoidance groove 31-2B is provided at the connection between the first locking end 31-1B and the locking plate main body 31-0B, and the guide rail passes through the locking plate guide rail avoidance groove 31-2B, and the first locking spring 30-31B makes the locking plate 31B incline towards the guide rail 7B.

[0113] Specifically, as Figure 13AIn the shown direction, the first locking end 31-1B is arranged at the upper part of the left end of the locking plate main body 31-0B. The locking plate guide rail avoidance groove 31-2B is located below the first locking end 31-1B and on the left side of the locking plate main body 31-0B. The first locking spring 30-31B applies pressure to the locking plate 31B, making it tilt towards the lower left (the direction where the guide rail 7B is located).

[0114] Preferably, as Figure 2 , 4 , shown in FIGS. 13A-13D, the locking plate assembly 3B further includes a second mounting plate 30B which is arranged in parallel with the locking plate 31B and fixedly arranged on the bottom plate 3A of the drawer seat. The locking plate 31B is movably connected to the second mounting plate 30B through a first connection and limiting structure. Further, as Figure 13A and 14 shown, the first connection and limiting structure includes a first locking plate limiting shaft 302B and a second locking plate limiting shaft 303B which are respectively arranged on the second mounting plate 30B, and a first locking plate kidney-shaped hole 312B and a second locking plate kidney-shaped hole 313B which are respectively arranged on the locking plate 31B; the first locking plate limiting shaft 302B and the second locking plate limiting shaft 303B are respectively matched with the first locking plate kidney-shaped hole 312B and the second locking plate kidney-shaped hole 313B. Further, as Figures 13A - 13D shown, both ends of the first locking spring 30-31B are respectively connected to the locking plate 31B and the second mounting plate 30B. One end of the first locking spring 30-31B is preferably connected to the lower left corner of the locking plate main body 31-0B of the locking plate 31B.

[0115] Specifically, as Figure 14 shown, the first locking plate limiting shaft 302B and the second locking plate limiting shaft 303B are arranged in parallel and at intervals on one side of the second mounting plate 30B, and both are vertically connected to the second mounting plate 30B. The first locking plate limiting shaft 302B is arranged in the middle of the second mounting plate 30B, and the second locking plate limiting shaft 303B is arranged at one end of the second mounting plate 30B far from the guide rail 7B. A second mounting plate screw rod avoidance hole 300B for the screw rod 4B to pass through is also arranged in the middle of the second mounting plate 30B. The first locking plate limiting shaft 302B is located on one side of the second mounting plate screw rod avoidance hole 300B. The second mounting plate 30B further includes a first locking spring limiting column 307-1B which is respectively arranged at both ends of the second mounting plate 30B with the second locking plate limiting shaft 303B. The first locking plate limiting shaft 302B, the second locking plate limiting shaft 303B and the first locking spring limiting column 307-1B are located at the three vertices of a triangle, and the first locking plate limiting shaft 302B, the second locking plate limiting shaft 303B and the first locking spring limiting column 307-1B are distributed on the outer periphery of the second mounting plate screw rod avoidance hole 300B; as Figure 13AAs shown, on the locking plate body 31-0B of the locking plate 31B, there are a first locking plate waist-shaped hole 312B, a second locking plate waist-shaped hole 313B, and a first locking plate spring limiting hole 314B. The three are located at the three vertices of a triangle. In the middle of the locking plate body 31-0B, there is also a locking plate screw rod avoiding hole 310B. The first locking plate waist-shaped hole 312B, the second locking plate waist-shaped hole 313B, and the first locking plate spring limiting hole 314B are distributed on the outer periphery of the locking plate screw rod avoiding hole 310B. Both ends of the first locking spring 30-31B are respectively connected to the first locking spring limiting post 307-1B and the first locking plate spring limiting hole 314B.

[0116] Preferably, as Figure 2 and 4 shown, the sliding plate 1B, the first mounting plate 2B, the locking plate 31B, and the second mounting plate 30B are sequentially arranged on the bottom plate 3A of the drawer seat. The sliding plate connecting plate 10B of the sliding plate 1B, the first mounting plate 2B, the locking plate 31B, and the second mounting plate 30B are arranged parallel to each other. Further, the screw rod 4B sequentially passes through the sliding plate 1B, the first mounting plate 2B (the first mounting plate screw rod avoiding hole provided in the middle of the first mounting plate 2B), the locking plate 31B (the locking plate screw rod avoiding hole 310B), and the second mounting plate 30B (the second mounting plate screw rod avoiding hole 300B). The guide rail 7B is arranged on one side of the screw rod 4B and is parallel to it. The electric device is arranged on the other side of the screw rod 4B, making the structure of the drawer seat 1 more compact. Specifically, as Figure 2 shown in the direction, the electric device and the guide rail 7B are respectively arranged on the left and right sides of the screw rod 4B.

[0117] Preferably, as Figure 15 shown, it is a locking method of the locking plate 31B and the screw rod 4B.

[0118] As Figure 15 shown, one end of the locking plate screw rod avoiding hole 310B is provided with a locking plate screw rod locking protrusion 3100B. The screw rod 4B includes a plurality of screw rod locking grooves 42B provided on it. The screw rod 4B is inserted into the locking plate screw rod avoiding hole 310B. When the locking plate 31B locks the guide rail 7B, the locking plate screw rod locking protrusion 3100B is simultaneously inserted into the screw rod locking groove 42B to lock the screw rod 4B.

[0119] Preferably, as Figure 16 、 18 and shown in 20, it is a connection method of the guide rail 7B and the sliding plate 1B.

[0120] As Figure 16As shown, the guide rail 7B also includes a guide rail connecting portion 71-72B arranged at one end thereof and having a T-shaped structure, the guide rail connecting portion 71-72B includes a guide rail connecting portion limiting arm 71B and a guide rail connecting portion connecting arm 72B, one end of the guide rail connecting portion connecting arm 72B is connected at a right angle to the middle of the guide rail connecting portion limiting arm 71B, and the other end is connected to the guide rail body 70B of the guide rail 7B; Figure 20 As shown, the skateboard 1B is an L-shaped structure, including a skateboard base plate 11B and a skateboard connecting plate 10B that are bent and connected. The skateboard base plate 11B is arranged parallel to the drawer seat bottom plate 3A, and the skateboard connecting plate 10B is provided with a skateboard guide connecting hole 101B; Figure 18 As shown, the second mounting plate 30B includes a second mounting plate guide rail limiting hole 305B. Figure 16 , 18 As shown in 20, after the guide rail connection part limiting arm 71B passes through the slide rail connection hole 101B, the guide rail 7B is rotated to make the guide rail connection part limiting arm 71B and the outer peripheral side wall of the slide rail connection hole 101B limited and matched, and the other end of the guide rail 7B is inserted into the second mounting plate guide rail limiting hole 305 to limit and match it, so as to prevent the guide rail 7B from rotating.

[0121] Preferably, Figures 3 - 8 As shown, the drawer seat 1 also includes a locking and resetting structure for releasing the locking relationship between the locking plate 31B and the guide rail 7B and the screw rod 4B.

[0122] like Figures 4 - 6 As shown in the figure, it is the first embodiment of the locking and resetting structure: the locking and resetting structure comprises a resetting shaft 90B and a resetting operating handle 91B, the two ends of the resetting shaft 90B are respectively connected to the locking plate 31B and the resetting operating handle 91B, the resetting operating handle 91B is turned to drive the resetting shaft 90B to rotate axially, and the resetting shaft 90B drives the locking plate 31B to move, so that the locking plate 31B moves out of the locking groove and cooperates with the second limiting wall 74-0B, and at the same time, the locking plate screw locking protrusion 3100B moves out of the screw positioning groove 43B. Further, as Figure 4 As shown, the reset shaft 90B includes a reset shaft body that is rotatably arranged and two reset shaft toggle arms that are respectively arranged at both ends of the reset shaft body. The reset shaft toggle arm is an L-shaped structure, including a toggle arm connecting part that is vertically connected to the reset shaft body and a toggle arm transmission part that is parallel to the reset shaft body; the reset operating handle 91B includes a reset operating handle main board 91-1B and a reset operating handle driving part 91-3B and a reset operating handle handle 91-2B that are respectively arranged on both sides of the reset operating handle main board 91-1B. A waist-shaped reset operating handle driving groove 91-30B is arranged in the middle of the reset operating handle driving part 91-3B to cooperate with the toggle arm transmission part. Further, as Figure 14As shown, the second mounting plate 30B includes a second mounting plate return rotation shaft hole 301B, as Figure 13A As shown, the locking plate 31B includes a locking plate return rotation shaft hole 311-1B; the second mounting plate return rotation shaft hole 301B is an arc-shaped hole, and the locking plate return rotation shaft hole 311-1B is an oblong hole. The driving arm transmission part of the return rotation shaft toggle arm of the return rotation shaft 90B passes through the second mounting plate return rotation shaft hole 301B and is in driving cooperation with the locking plate return rotation shaft hole 311-1B to drive the locking plate 31B to move horizontally.

[0123] Preferably, as Figure 2 and 3 As shown, the drawer base 1 further includes a drawer base panel 5A provided at one end of the drawer base bottom plate 3A and fixedly connected thereto. The return operation handle main board 91-1B is slidably arranged on the drawer base panel 5A. The drawer base panel 5A includes a panel padlock handle 51A provided thereon. When the locking plate 31B locks the guide rail 7B and the lead screw 4B, the return operation handle padlock handle 91-2B and the panel padlock handle 51A are adjacent to each other, and the return operation handle padlock handle 91-2B and the panel padlock handle 51A are locked together by a lock 92B to prevent the return operation handle 91B from moving, so that the locking plate 31B keeps locking the guide rail 7B and the lead screw 4B, thereby avoiding unexpected unlocking operations (such as misoperations by users or illegal operations by unauthorized personnel, etc.) and ensuring the electrical safety of users.

[0124] As Figure 7 and 8 As shown, it is the second embodiment of the locking and resetting structure: the locking and resetting structure includes a reset button member 93B, a reset button member return spring 94B, and a reset link 95B. The middle of the reset link 95B is rotatably arranged, and the two ends are respectively drivingly connected to the reset button member 93B and the locking plate 31B; pressing the reset button member 93B drives one end of the reset link 95B to swing, and the other end of the reset link 95B drives the locking plate 31B to move and reset, releasing the locking of the guide rail 7B and the lead screw 4B, and the reset button member return spring 94B drives the reset button member 93B to reset. Further, as Figure 7 and 8 As shown, the reset button member return spring 94B is sleeved on the lead screw 4B, and the reset button member 93B is arranged on one side of the lead screw 4B and is parallel to it; the drawer base 1 further includes a drawer base panel 5A provided at one end of the drawer base bottom plate 3A and fixedly connected thereto. The reset button member 93B is slidably arranged on the drawer base panel 5A. Further, the reset button member 93B includes a reset button member driving oblong hole, one end of the reset link 95B is provided with a reset link driven shaft that cooperates with the reset button member driving oblong hole, the other end of the reset link 95B is provided with a reset link driving oblong hole, and the locking plate 31B is provided with a reset driven shaft that cooperates with the reset link driving oblong hole.

[0125] As Figure 3 shown, it is the third embodiment of the locking and resetting structure: The locking and resetting structure includes an unlocking electromagnet 2C arranged on the bottom plate 3A of the drawer seat. The unlocking electromagnet 2C is arranged on one side of the locking plate 31B and is drivingly connected thereto, realizing remote control of the movement and reset of the locking plate 31B. Specifically, the unlocking electromagnet 2C includes a push rod, and the push rod is drivingly connected to the locking plate 31B.

[0126] Preferably, as Figure 4 and 23 shown, the universal circuit breaker of the present invention further includes an indicating structure for indicating the position of the circuit breaker body 2.

[0127] As Figure 4 and 23 shown, the indicating structure includes an indicating member 8B rotatably arranged on the drawer seat 1, and the guide rail 7B is drivingly connected to the indicating member 8B; when the sliding plate 1B reciprocates to drive the circuit breaker body 2 to switch between the separated position, the test position and the connected position, the guide rail 7B drives the indicating member 8B to rotate to indicate the position of the circuit breaker body 2.

[0128] As Figure 4 shown, it is the first embodiment of the indicating member 8B: The indicating member 8B is of a cylindrical structure, and the guide rail 7B is drivingly connected to the indicating member 8B through a transmission connecting rod 7-8B to drive the axial rotation of the indicating member 8B.

[0129] Preferably, the indicating member 8B is rotatably arranged on the bottom plate 3A of the drawer seat 1 of the drawer seat, and an indicating member return torsion spring is arranged between the indicating member 8B and the bottom plate 3A of the drawer seat.

[0130] Preferably, as Figure 4 shown, three marks corresponding to the separated position, the test position and the connected position are respectively arranged on the circumferential side surface of the indicating member 8B, and the marks include at least one of a text mark, a symbol mark and a color mark. Further, as Figure 4 shown, the drawer seat 1 further includes a drawer seat panel 5A, and a status indicating hole 52A for observing the marks is arranged on the drawer seat panel 5A.

[0131] Preferably, as Figure 4 and 16 shown, the guide rail 7B includes a guide rail indicating member driving portion 75B arranged at one end thereof, and the guide rail indicating member driving portion 75B is provided with a guide rail indicating member driving portion connection hole 750B, which cooperates with one end of the transmission connecting rod 7-8B. Specifically, guide rail connection portions 71-72B and a guide rail indicating member driving portion 75B are respectively arranged at both ends of the guide rail 7B.

[0132] As Figure 23As shown in the figure, it is the second embodiment of the indicating member 8B: an indicating member mounting hole is provided on the drawer seat panel 5A, the indicating member 8B is of a cylindrical structure and is rotatably arranged in the indicating member mounting hole; the guide rail 7B is drivingly connected to the indicating member 8B through a flexible connecting member, and an indicating member return torsion spring is provided between the indicating member 8B and the drawer seat panel 5A. Further, the flexible connecting member is a steel wire or a nylon rope, and the indicating member 8B includes an indicating member winch for coiling the flexible connecting member.

[0133] Preferably, as Figure 23 shown, an indicating arrow is provided on one side of the indicating member 8B facing the operator, and three markings corresponding to the separated position, the test position and the connected position are provided on the drawer seat panel 5A. The indicating arrow cooperates with the three markings to indicate the position of the circuit breaker body 2. Specifically, when the guide rail 7 is driven to move by an external force (driven by the slide plate 1B), the indicating member 8B is driven to rotate, and the indicating arrow rotates following the indicating member 8B. When the circuit breaker body 2 reaches a certain position, the marking pointed by the indicating arrow is the current position of the circuit breaker body 2.

[0134] As Figures 17A - 19 shown, it is the second embodiment of the universal circuit breaker of the present invention.

[0135] The difference between the universal circuit breaker of this embodiment and the first embodiment is that: the second embodiment of the locking structure is adopted in this embodiment. Specifically, as Figures 17A - 19 shown, the locking plate assembly 3B includes a locking plate 31B and a locking hook 32B. The locking hook 32B is arranged on the locking plate 31B and can only move in a single dimension relative to the locking plate 31B. The locking plate 31B is perpendicular to the moving direction of the guide rail 7B, and the locking hook 32B is in limit cooperation with the locking groove to lock the guide rail 7B; the guide rail 7B further includes a first transition boss 730-731B arranged between the first locking groove 730B and the second locking groove 731B and a second transition boss 731-732B arranged between the second locking groove 731B and the third locking groove 732B; when the locking hook 32B is in limit cooperation with a certain locking groove, the locking plate 31B is moved and reset under the action of an external force. After the locking plate 31B drives the locking hook 32B out of the locking groove, the locking hook 32B moves in the first direction relative to the locking plate 31B and is in limit cooperation with the side wall of the guide rail 7B; when the guide rail 7B moves relative to the locking plate 31B, the first transition boss 730-731B or the second transition boss 731-732B drives the locking hook 32B to move in the second direction relative to the locking plate 31B. When the locking hook 32B is opposite to another locking groove, the locking plate 31B drives the locking plate 32B to move and insert into the locking groove. Further, as Figures 17A - 17DAs shown, the locking plate 31B can only move up and down relative to the locking plate 31B; when the locking plate 31B is moved and reset under an external force, after the locking hook 32B is driven by the locking plate 31B to move out of the locking groove, the locking hook 32B moves downward relative to the locking plate 31B until the lower end of the locking hook 32B crosses the bottom wall of the locking groove and is in limit fit with the side wall of the guide rail 7B; the first transition boss 730-731B or the second transition boss 731-732B drives the locking hook 32B to move upward relative to the locking plate 31B until the lower end of the locking hook 32B is not lower than the bottom wall of the locking groove.

[0136] Specifically, when the locking hook 32B is in limit fit with a certain locking groove (such as the second locking groove 731B), when the locking plate 31B is moved (moved to the left) and reset under an external force, after the locking plate 31B drives the locking hook 32B to move out of the locking groove, the locking hook 32B moves downward relative to the locking plate 31B until the lower end of the locking hook 32B crosses the bottom surface of the locking groove and is in limit fit with the side wall of the guide rail 7B, entering Figure 17A the state shown; as Figure 17B shown in the direction, when the guide rail 7B moves forward relative to the locking plate 31B, the second transition boss 731-732B drives the locking hook 32B to move upward relative to the locking plate 31B (if the guide rail 7B moves backward relative to the locking plate 31B, the first transition boss 730-731B drives the locking hook 32B to move upward relative to the locking plate 31) until the lower end of the locking hook 32B is not lower than the bottom surface of the locking groove. When the locking hook 32B is opposite to another locking groove (such as Figure 17C shown, the third locking groove 732B), the locking plate 31B drives the locking hook 32B to move to the right, so that the locking hook 32B is inserted into the locking groove, entering the state shown in Figure 17D At this time, the guide rail 7B is locked. If it is necessary to unlock the guide rail 7B, only an external force needs to be applied to the locking plate 31B to move the locking plate 31 and the locking hook 32B to the left. After the locking hook 32B moves out of the locking groove, it moves downward and is in limit fit with the side wall of the guide rail 7B.

[0137] Preferably, as Figure 19 shown, the first locking groove 730B, the first transition boss 730-731B, the second locking groove 731B, the second transition boss 731-732B and the third locking groove 732B are sequentially arranged on one side of the guide rail 7B along the axial direction of the guide rail 7B. Further, the first transition boss 730-731B and the second transition boss 731-732B are isosceles trapezoidal bosses or arc-shaped bosses.

[0138] Preferably, as Figure 18As shown, the locking hook 32B includes a locking hook mounting portion 320B and a locking hook locking portion 321B. The locking hook locking portion 321B is disposed at the lower end of the locking hook mounting portion 320B. The locking hook locking portion 321B is in limit fit with the locking groove, and the first transition boss 730 - 731B or the second transition boss 731 - 732 drives the locking hook 32B to move upward relative to the locking plate 31B through the locking hook mounting portion 320B. Further, as Figure 18 shown, the locking plate 31B includes a locking plate main body 31 - 0B and a locking plate hook mounting portion 31 - 3B disposed at one end of the locking plate main body 31 - 0B. A locking plate guide rail avoidance groove 31 - 2B for avoiding the guide rail 7B is formed at the connection between the locking plate main body 31 - 0B and the locking plate hook mounting portion 31 - 1B. The guide rail 7B passes through the locking plate guide rail avoidance groove 31 - 2B, and the locking plate hook mounting portion 31 - 3B and the locking hook 32B are located above the guide rail 7B. Further, as Figure 18 shown, the locking plate 31B further includes a locking plate hook limiting portion 316 - 1B bent and connected to one end of the locking plate hook mounting portion 31 - 3B and a locking plate hook mounting shaft 311 - 2B disposed on the locking plate hook mounting portion 31 - 3B. The locking plate hook limiting portion 316 - 1B and the locking plate main body 31 - 0B are respectively connected to both ends of the locking plate hook mounting portion 31 - 3B. The locking plate hook limiting portion 316 - 1B is in limit fit with the locking hook mounting portion 320B. The locking hook 32B includes a locking hook waist-shaped hole 323B disposed on the locking hook mounting portion 320B. The locking hook 32B is mounted on the locking plate hook mounting shaft 311 - 2B through the locking hook waist-shaped hole 323B and is in limit fit with the locking plate hook limiting portion 316 - 1B. The width of the locking hook waist-shaped hole 323B matches the outer diameter of the locking plate hook mounting shaft 311 - 2B, and the length of the locking hook waist-shaped hole 323B is greater than the outer diameter of the locking plate hook mounting shaft 311 - 2B, so that the locking hook 32B can move smoothly up and down relative to the locking plate 31B.

[0139] Specifically, as Figure 18 shown, the locking plate hook limiting portion 316 - 1B and the locking plate main body 31 - 0B are respectively located at the left and right ends of the locking plate hook mounting portion 31 - 3B. The locking plate hook limiting portion 316 - 1B is connected to the locking plate hook mounting portion 31 - 3B at a right angle. The locking plate hook mounting portion 31 - 3B is located at the upper left corner of the locking plate main body 31 - 0. The locking plate guide rail avoidance groove 31 - 2B is located below the locking plate hook mounting portion 31 - 3B and on the left side of the locking plate main body 31 - 0B. The locking hook locking portion 321B is located at the lower left end of the locking hook mounting portion 320B.

[0140] Preferably, as Figure 18As shown, the locking plate assembly 3B further includes a second mounting plate 30B fixedly arranged on the bottom plate of the drawer seat 3A and arranged parallel to the locking plate 31B. The locking plate 31B is connected to the second mounting plate 30B through a first connection and limiting structure, and the locking plate 31B can only move horizontally relative to the second mounting plate 30B. Further, as Figure 18 shown, the first connection and limiting structure includes a first locking plate limiting shaft 302B and a second locking plate limiting shaft 303B respectively arranged on the second mounting plate 30B, and a first locking plate waist-shaped hole 312B and a second locking plate waist-shaped hole 313B respectively arranged on the locking plate 31B; the first locking plate waist-shaped hole 312B and the second locking plate waist-shaped hole 313B are respectively matched with the first locking plate limiting shaft 302B and the second locking plate limiting shaft 303B. Further, as Figure 18 shown, the second mounting plate 30B is further provided with a second mounting plate return rotation shaft hole 301B, a second mounting plate lead screw avoidance hole 300B, a second mounting plate guide rail limiting hole 305B and a second mounting plate locking spring limiting protrusion 307-2B; the locking plate 31B is further provided with a locking plate return rotation shaft hole 311-1B (not shown in the figure), a locking plate lead screw avoidance hole 310B, a first locking plate spring limiting hole 314B and a spring limiting protrusion avoidance groove 315B.

[0141] Specifically, as Figure 18In the shown direction, the second locking plate limiting shaft 303B and the second mounting plate screw rod avoidance hole 300B are arranged in the middle of the second mounting plate 30B. The second locking plate limiting shaft 303B is located below the second mounting plate screw rod avoidance hole 300B. The second mounting plate guide rail limiting hole 305B and the second mounting plate locking spring limiting protrusion 307-2B are respectively located at the left and right ends of the second mounting plate 30B. The second mounting plate reset rotating shaft hole 301B is located between the second mounting plate guide rail limiting hole 305B and the second mounting plate screw rod avoidance hole 300B, and above the second mounting plate guide rail limiting hole 305B and the second mounting plate screw rod avoidance hole 300B. The first locking plate limiting shaft 302B is located between the second mounting plate screw rod avoidance hole 300B and the second mounting plate locking spring limiting protrusion 307-2B, and above the second mounting plate screw rod avoidance hole 300B and the second mounting plate locking spring limiting protrusion 307-2B. The locking plate screw rod avoidance hole 310B and the second locking plate waist-shaped hole 313B are located in the middle of the locking plate main body 31-0B. The second locking plate waist-shaped hole 313B is located below the locking plate screw rod avoidance hole 310B. The spring limiting protrusion avoidance groove 315B is located at the right end of the locking plate main body 31-0B for avoiding the second mounting plate locking spring limiting protrusion 307-2B. The first locking plate spring limiting hole 314B is arranged between the locking plate screw rod avoidance hole 310B and the spring limiting protrusion avoidance groove 315B. The first locking plate waist-shaped hole 312B is located above the spring limiting protrusion avoidance groove 315B. The locking plate reset rotating shaft hole 311-1B is located at the upper left end of the locking plate main body 31-0B.

[0142] Preferably, as Figures 17A - 17D shown, the locking structure further includes a first locking spring 30-31B. The two ends of the first locking spring 30-31B are respectively connected to the second mounting plate 30B and the locking plate 31B of the locking plate assembly 3B. Further, the two ends of the first locking spring 30-31B are respectively connected to the first locking plate spring limiting hole 314B and the second mounting plate locking spring limiting protrusion 307-2B.

[0143] It should be noted that, as Figure 18 shown, the locking plate 31B may not be provided with the locking plate reset rotating shaft hole 311-1B, but a locking plate reset shaft is provided. A locking plate reset shaft matching hole is arranged in the middle of the locking plate reset shaft. The locking plate reset shaft passes through the second mounting plate reset rotating shaft hole 301B, and the locking plate reset shaft matching hole is matched with the locking and reset structure.

[0144] It should be noted that: in combination with Figure 17A shown, when the locking and reset structure releases the locking relationship between the locking plate assembly 3B and the guide rail 7B and the screw rod 4B, the locking and reset structure drives the locking plate 31B to move horizontally. The locking plate 31B drives the locking hook 32B to move out of the locking groove and be in limit cooperation with the side wall of the guide rail 7B.

[0145] As Figures 21A - 22B shown, this is the third embodiment of the universal circuit breaker of the present invention.

[0146] The difference between the universal circuit breaker of this embodiment and the first embodiment is that: this embodiment adopts the third embodiment of the locking structure. Specifically, as Figures 21A - 22B shown, the locking plate assembly 3B includes a locking plate 31B and an unlocking plate 33B. The unlocking plate 33B is arranged on the locking plate 31B and is movably connected thereto. The locking plate 31B is perpendicular to the moving direction of the guide rail 7B. The locking plate 31B is in limit fit with the locking groove to lock the guide rail 7B; the unlocking plate 33B includes an unlocking hook 331B, and the locking plate 31B includes a locking plate hook 316-2B; the guide rail 7B further includes a first unlocking groove 750B arranged between the first locking groove 730B and the second locking groove 731B, and a second unlocking groove 751B arranged between the second locking groove 731B and the third locking groove 732B; when the locking plate 31B locks the guide rail 7B, the locking plate hook 316-2B is in limit fit with a locking groove, the unlocking hook 331B is located on the first side of the guide rail 7B, an external force causes the locking plate 31B to move and reset, the locking plate 31B drives both the locking plate hook 316-2B and the unlocking hook 331B to move to the second side of the guide rail 7B, the unlocking hook 331B is in limit fit with the guide rail 7B, the guide rail 7B moves relative to the locking plate 31B, the unlocking hook 331B is disengaged from the limit fit with the guide rail 7B from the first unlocking groove 750B or the second unlocking groove 751B or the locking groove and moves to the first side of the guide rail 7B, the locking plate hook 316-2B is in limit fit with the guide rail 7B, and when the locking plate hook 316-2B faces another locking groove, the locking plate hook 316-2B is inserted into the locking groove to lock the guide rail 7B. Further, as Figures 21A - 22A shown, the depths of the first unlocking groove 750B and the second unlocking groove 751B are less than the depth of the locking groove; the lower end of the locking plate hook 316-2B protrudes below the lower end of the unlocking hook 331B.

[0147] Preferably, as Figure 22B shown, when the unlocking hook 331B is in limit fit with the guide rail 7B, there is a gap between the locking plate hook 316-2B and the guide rail 7B, which is beneficial to reducing the resistance when the guide rail 7B slides relative to the locking plate 31B.

[0148] Specifically, when the locking plate 31B is in limit fit with the second locking groove 731B to lock the guide rail 7B, the unlocking hook 331B is located on the left side (the first side of the guide rail 7B) of the guide rail 7B. An external force causes the locking plate 31B to move to the right to reset. The locking plate 31B drives both the locking plate hook 316-2B and the unlocking hook 331B to move to the right side (the second side of the guide rail 7B) of the guide rail 7B. The unlocking hook 331B is in limit fit with the guide rail 7B and enters Figure 21A the state shown; as Figure 21B shown, the guide rail 7B moves backward relative to the locking plate 31B. When the unlocking hook 331B is opposite to the first unlocking groove 750B, the unlocking hook 331B moves from the first unlocking groove 750B to the left side of the guide rail 7B to release the limit fit with the guide rail 7B (when the guide rail 7B moves forward relative to the locking plate 31B, the unlocking hook 331B will move from the second locking groove 731B to the left side of the guide rail 7B to release the limit fit with the guide rail 7B), so that the locking plate hook 316-2B is in limit fit with the guide rail 7B; as Figure 21C shown, the guide rail 7B continues to move backward relative to the locking plate 31B until the locking plate hook 316-2B is opposite to the first locking groove 730B. The locking plate 31B drives the locking plate hook 316-2B to insert into the first locking groove 730B; as Figure 21D shown, when the guide rail 7B needs to be unlocked again, an external force is applied to the locking plate 31B to make the locking plate 31B and the unlocking plate 33B move to the right until both the locking plate hook 316-2B and the unlocking hook 331B move to the right side of the guide rail 7B and the unlocking hook 331B is in limit fit with the guide rail 7B.

[0149] Preferably, as Figure 21D shown, the locking plate assembly 3B further includes a first locking spring 30-31B and a second unlocking spring 30-33B; one end of the first locking spring 30-31B is connected to the locking plate 31B and the other end is fixedly arranged; one end of the first unlocking spring 30-33B is connected to the unlocking plate 33B and the other end is fixedly arranged; the unlocking plate 33B can move horizontally and rotate relative to the locking plate 31B. Further, as Figure 21D shown, the first locking spring 30-31B applies a pulling force to the locking plate 31B to make it tend to the left; the first unlocking spring 30-33B applies a pulling force to the unlocking plate 33B to make it tend to the left. Further, as Figure 21D shown, both ends of the first locking spring 30-31B are respectively connected to the locking plate 31B and the second mounting plate 30B; both ends of the first unlocking spring 30-33B are respectively connected to the unlocking plate 33B and the second mounting plate 30B.

[0150] Preferably, as Figure 22BAs shown, one side of the unlocking hook 331B is used for limiting and cooperating with the guide rail 7B, and a chamfer structure is provided at the lower end of the other side, which is beneficial to reducing the resistance when the unlocking hook 33B moves from the first side of the guide rail 7B to the second side of the guide rail 7B.

[0151] Preferably, as Figure 22A shown, the locking plate 31B includes a locking plate main body 31-0B and a locking plate hook 316-2B provided at one end of the locking plate main body 31-0B. A locking plate guide rail avoidance groove 31-2B is provided at the connection between the locking plate main body 31-0B and the locking plate hook 316-2B; the unlocking plate 33B includes an unlocking plate main body 330B and an unlocking hook 331B provided at one end of the unlocking plate main body 330B; the guide rail 7B passes through the locking plate guide rail avoidance groove 31-2B, and the locking plate hook 316-2B and the unlocking plate 33B are located above the guide rail 7B. Further, the locking plate 31B further includes an unlocking plate limiting boss 318B, and the unlocking plate limiting boss 318B is located below the unlocking plate 33B and is in limiting cooperation with it. The first unlocking spring 30-33B makes the unlocking plate 33B abut against the unlocking plate limiting boss 318B. Specifically, as Figure 22A shown, the locking plate hook 316-2B is provided at the upper part of the right end of the locking plate main body 31-0B, and the locking plate guide rail avoidance groove 31-2B is located on the right side of the locking plate main body 31-0B and below the locking plate hook 316-2B; the unlocking plate 33B is provided at the upper part of the right end of the locking plate main body 31-0B, and the unlocking hook 331B is provided at the lower part of the right end of the unlocking plate main body 330B.

[0152] Preferably, as Figure 22A shown, the locking plate assembly 3B further includes a second mounting plate 30B fixedly provided on the bottom plate of the drawer seat 3A and arranged in parallel with the locking plate 31B. The locking plate 31B is movably connected to the second mounting plate 30B through a first connection and limiting structure. Further, as Figure 22A shown, the first connection and limiting structure includes a first locking plate limiting shaft 302B and a second locking plate limiting shaft 303B respectively provided on the second mounting plate 30B, and a first locking plate kidney-shaped hole 312B and a second locking plate kidney-shaped hole 313B respectively provided on the locking plate 31B; the first locking plate kidney-shaped hole 312B and the second locking plate kidney-shaped hole 313B are respectively matched with the first locking plate limiting shaft 302B and the second locking plate limiting shaft 303B. Further, as Figure 22A shown, the locking plate 30B can move horizontally relative to the second mounting plate 30B. Further, as Figure 22AAs shown, the second mounting plate 30B is further provided with a second mounting plate reset rotating shaft hole 301B, a second mounting plate lead screw avoiding hole 300B, a second mounting plate guide rail limiting hole 305B, and a third mounting plate locking spring limiting protrusion 307-3B; the locking plate 31B is further provided with a locking plate reset rotating shaft hole 311-1B (not shown in the figure), a locking plate lead screw avoiding hole 310B, a first locking plate spring limiting column 314-1B, a spring limiting protrusion avoiding groove 315B, and an unlocking plate mounting shaft 317B; the unlocking plate 33B includes an unlocking plate main body 330B, an unlocking plate shaft hole 333B, an unlocking plate spring limiting hole 334B, and an unlocking hook 331B.

[0153] Specifically, as Figure 22A shown, the second mounting plate lead screw avoiding hole 300B is arranged in the middle of the second mounting plate 30B, the first locking plate limiting shaft 302B and the third mounting plate locking spring limiting protrusion 307-3B are located at the left end of the second mounting plate 30B, the second mounting plate reset rotating shaft hole 301B, the second locking plate limiting shaft 303B, and the second mounting plate guide rail limiting hole 305B are located at the right end of the second mounting plate 30B, the second mounting plate reset rotating shaft hole 301B is located between the second mounting plate lead screw avoiding hole 300B and the second mounting plate guide rail limiting hole 305B, and the second locking plate limiting shaft 303B is located below the second mounting plate guide rail limiting hole 305B. Further, as Figure 22A shown, the second mounting plate guide rail limiting hole 305B is an L-shaped hole.

[0154] Specifically, as Figure 22A shown, the locking plate lead screw avoiding hole 310B is arranged in the middle of the locking plate 31B, the first locking plate spring limiting column 314-1B and the spring limiting protrusion avoiding groove 315B are located at the left end of the locking plate main body 31-0B, the first locking plate spring limiting column 314-1B is located between the spring limiting protrusion avoiding groove 315B and the locking plate lead screw avoiding hole 310B, the first locking plate waist-shaped hole 312B is located above the first locking plate spring limiting column 314-1B and the spring limiting protrusion avoiding groove 315B, the locking plate hook 316-2B is arranged at the upper end of the locking plate main body 31-0B, and the unlocking plate limiting boss 318B is located on the right side of the locking plate lead screw avoiding hole 310B and below the unlocking plate mounting shaft 317B.

[0155] Specifically, as Figure 22A shown, the unlocking plate shaft hole 333B is located in the middle of the unlocking plate main body 330B, the unlocking plate spring limiting hole 334B is arranged at the lower left corner of the unlocking plate main body 330B, and the unlocking hook 331B is located at the lower right corner of the unlocking plate main body 330B.

[0156] Preferably, as shown in Fig. 22, the cross-section of the guide rail 7B is an L-shaped structure, including a guide rail locking part 70-1B and a guide rail limiting part 70-0B which are bent and connected. The locking groove, the first unlocking groove 750B and the second unlocking groove 751B are all arranged on the guide rail locking part 70-1B.

[0157] It should be noted that, as shown in Figure 21A When the locking and reset structure releases the locking relationship between the locking plate assembly 3B, the guide rail 7B and the lead screw 4B, the locking and reset structure drives the locking plate 31B to move horizontally. The locking plate 31B drives the locking plate hook 316-2 out of the locking groove and makes the unlocking hook 331B be in limit fit with the side wall of the guide rail 7B.

[0158] As Figures 24 - 30 shown, it is the fourth embodiment of the universal circuit breaker of the present invention.

[0159] As Figure 24 shown, the universal circuit breaker of this embodiment further includes a first switching element connected in series in the power supply circuit of the motor 5B. When the circuit breaker body 2 is in the connected position, the circuit breaker body 2 closes the switch and simultaneously drives the first switching element to act, disconnecting the power supply circuit of the motor 5B. Further, as Figures 25 - 28A shown, the circuit breaker body 2 includes an energy storage operating mechanism. The energy storage operating mechanism includes a rotating shaft assembly 1D which is drivingly connected to the moving contact of the circuit breaker body 2. The rotating shaft assembly 1D is drivingly cooperated with the first switching element.

[0160] It should be noted that the rotating shaft assembly 1D is a structure directly drivingly connected to the moving contact of the circuit breaker body 2. Its axial rotation can drive the moving contact to act, driving the circuit breaker body 2 to close / open the switch, which is different from the main shaft (camshaft) of the energy storage operating mechanism for completing energy storage. In addition, other mechanisms of the energy storage operating mechanism can also drive the first switching element.

[0161] Preferably, as Figures 25 - 28AAs shown, the rotating shaft assembly 1D includes a rotating shaft 10D, a switch driving arm 12D, and a switch driving shaft 13D. One end of the switch driving arm 12D is connected to the rotating shaft 10D, and the other end is provided with the switch driving shaft 13D. The drawer base 1 further includes two relatively arranged drawer base side plates respectively arranged at both ends of the drawer base bottom plate 3A, namely a first side plate 1A and a second side plate 2A. The drawer base 1 further includes a first lever 20D rotatably arranged on any one of the drawer base side plates. When the circuit breaker body 2 is in the connected position, the switch driving shaft 13D is drivingly connected to the first lever 20D. The first switch member is arranged on the drawer base side plate on one side of the first lever 20D and is drivingly matched with it. When the circuit breaker body 2 is closed in the connected position, the rotating shaft 10D rotates and drives the switch driving arm 12D to swing. The switch driving arm 12D drives the first lever 20D to swing through the switch driving shaft 13D, and the first lever 20D drives the first switch member to act, disconnecting the power supply circuit of the motor 5B. Further, as Figure 28A As shown, the middle of the first lever 20D is rotatably arranged through a first lever rotating shaft 21D, and one end is provided with a first lever fitting groove 23D. When the circuit breaker body 2 moves to the connected position, the switch driving shaft 13D enters the first lever fitting groove 23D and is drivingly matched with it. Further, the drawer base further includes a first lever return spring 7D and a first lever limit post 90D arranged on the drawer base side plate. The first lever return spring 7D is connected to one end of the first lever 20D, so that the other end of the first lever 20D is in limit cooperation with the first lever limit post 90D.

[0162] Specifically, as Figure 28A As shown, the first switch member is a normally closed microswitch SS1. P1, P2, and P4 are preferred setting positions of the microswitch SS1. When the microswitch SS1 is in the P2 or P4 position, it cooperates with the left end of the first lever 20D. When it is in the P1 position, it cooperates with the right end of the first lever 20D. When the microswitch SS1 remains closed, the power supply circuit of the motor 5A remains unblocked. When the microswitch SS1 is triggered by the first lever 20D, it is converted to open, thereby disconnecting the power supply circuit of the motor 5A.

[0163] Preferably, as Figures 27 - 29As shown, the drawer base 1 further includes a lead screw baffle 6D. The lead screw baffle 6D includes a handle insertion hole 62D provided thereon, and the handle insertion hole 62D is arranged offset from one end of the lead screw 4B. The operating handle 1C drives the lead screw baffle 6D to move to one side, so that the handle insertion hole 62D faces the lead screw 4B, and the operating handle 1C passes through the handle insertion hole 62D and is drivingly connected to the lead screw 4B. The drawer base 1 further includes a baffle limit component 4D that is drivingly cooperated with the first lever 20D. When the circuit breaker body 2 is in the closed position at the connection position, the first lever 20D drives the baffle limit component 4D to act, so that the baffle limit component 4D is in limit cooperation with the lead screw baffle 6D to prevent the lead screw baffle 6D from moving. Further, as Figure 28A As shown, the baffle limit component 4D includes a second lever 43D, a block transmission arm 40D, and a baffle limit block 42D. The middle of the second lever 43D is rotatably arranged on the side plate of the drawer base, one end is drivingly connected to the first lever 20D, and the other end is drivingly connected to the block transmission arm 40D. The baffle limit block 42D is arranged at the other end of the block transmission arm 40D and is in limit cooperation with the lead screw baffle 6D. Further, a second lever kidney-shaped hole 43-3D is provided at one end of the second lever 43D, and a block transmission arm connecting shaft 41D is provided at one end of the block transmission arm 40D, which is matched with the second lever kidney-shaped hole 43-3D.

[0164] Preferably, as Figure 28A As shown, the first lever 20D is drivingly connected to the second lever 43D through a first lever return spring 7D, and the second lever 43D is connected to the side plate of the drawer base through a second lever return spring 8D. The drawer base 1 further includes a first lever limit post 90D and a second lever limit post 91D. The first lever return spring 7D makes the first lever 20D abut against the first lever limit post 90D, and the second lever return spring 8D makes the second lever 43D abut against the second lever limit post 91D. The first lever 20D is drivingly connected to the second lever 43D through the first lever return spring 7D, which can avoid the situation where the first lever 20D, the second lever 43D, and the baffle limit component 4D are damaged when the baffle limit component 4D is blocked (for example, the operating handle 1C is not pulled out of the handle insertion hole 62D in time) and cannot move.

[0165] Specifically, as Figure 28AAs shown, the middle part of the first lever 20D is rotationally arranged on the side plate of the drawer base through the first lever rotating shaft 21D. The left end of the first lever 20D is connected to the left end of the second lever 43D through the first lever return spring 7D. The left end of the second lever 43D is connected to the side plate of the drawer base through the second lever return spring 8D. The right end of the first lever 20D is provided with a first lever mating groove 23D and abuts against the first lever limiting post 90D at the right end. The middle part of the second lever 43D is rotationally arranged on the side plate of the drawer base through the second lever rotating shaft 43-2D. The right end of the second lever 43D is drivingly connected to the stop block driving arm 40D; in combination with Figure 28A and 28B As shown, when the circuit breaker body 2 is in the connected position, the switch driving shaft 13D of the rotating shaft assembly 1D enters the first lever mating groove 23D. When the circuit breaker body 2 is closed, the rotating shaft assembly 1D rotates axially and drives the first lever 20D to rotate clockwise through the switch driving shaft 13D. The first lever 20D then drives the second lever 43D to rotate clockwise through the first lever return spring 7D. The second lever 43D then drives the stop block driving arm 40D to drive the baffle limiting block 42D to move downward and be in limit cooperation with the lead screw baffle 6D.

[0166] Preferably, as Figure 28A shown, the first switch member can also cooperate with the second lever 43D. For example, the first switch member is arranged at the P3 position.

[0167] Preferably, as Figure 24 and 30 shown, the universal circuit breaker of the present invention further includes a second switch member connected in series in the power supply circuit of the motor 5B. When the locking plate assembly 3B locks the guide rail 7B and the lead screw 4B respectively, it drives the second switch member to disconnect the power supply circuit of the motor 5B. Further, as Figure 30 shown, the second switch member is a micro switch SS2, which is arranged on the second mounting plate 30B, between the second mounting plate 30B and the locking plate 31B and is in driving cooperation with the locking plate 31B; when the locking plate assembly 3B locks the guide rail 7B and the lead screw 4B respectively, the locking plate 31B drives the micro switch SS2 to disconnect the power supply circuit of the motor 5B.

[0168] As Figure 24 shown, it is an embodiment of the power supply circuit of the motor 5A. As Figure 24As shown, the power supply circuit of the motor 5B further includes a current commutation switch S1, a on-site commutation button SB1, and a remote commutation button SB2; the current commutation switch S1 includes a first common contact CT1 and a second common contact CT2, a first output contact T1 and a second output contact T2 that cooperate with the first common contact CT1, and a third output contact T3 and a fourth output contact T4 that cooperate with the second common contact CT2; the first common contact CT1 is connected to the first output contact T1 while the second common contact CT2 is connected to the third output contact T3, or the first common contact CT1 is connected to the second output contact T2 while the second common contact CT2 is connected to the fourth output contact T4; the first common contact CT1 is connected to the positive pole of the power supply through a first switching element, and the second common contact CT2 is connected to the negative pole of the power supply; the first output contact T1 and the third output contact T3 are respectively connected to the input ends of the remote commutation button SB2, and the second output contact T2 and the fourth output contact T4 are respectively connected to the input ends of the on-site commutation button SB1. The first output end of the on-site commutation button SB1 and the second output end of the remote commutation button SB2 are both connected to an input end of the motor 5B through a second switching element, and the second output end of the on-site commutation button SB1 and the first output end of the remote commutation button SB2 are both connected to the other input end of the motor 5B. The polarities of the first output end of the commutation button SB1 and the second output end of the commutation button SB2 are opposite. Further, when the user operates the commutation button SB1 on-site or operates the commutation button SB2 remotely, the current commutation switch S1 can be controlled to act, thereby changing the current direction input to the motor 5A and realizing the forward / reverse control of the motor 5A.

[0169] Specifically, the positive output end of the on-site commutation button SB1 and the negative output end of the remote commutation button SB2 are connected to the positive input end of the motor 5A through a second switching element (micro switch SS2); the negative output end of the on-site commutation button SB1 and the positive output end of the remote commutation button SB2 are connected to the negative input end of the motor 5A.

[0170] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. A universal circuit breaker, which comprises a drawer base (1) and a circuit breaker body (2) arranged in the drawer base (1); the drawer base (1) comprises a drawer base bottom plate (3A), a slide plate (1B), a lead screw (4B) and an electric device arranged on the drawer base bottom plate (3A); the lead screw (4B) is in threaded connection with the slide plate (1B), and the axial rotation of the lead screw (4B) drives the slide plate (1B) to reciprocate relative to the drawer base bottom plate (3A), and the slide plate (1B) drives the circuit breaker body (2) to switch between a separation position, a test position and a connection position; the electric device comprises a motor (5B) and a gear mechanism (6B), and the motor (5B) is drivingly connected to the lead screw (4B) through the gear mechanism (6B). It is characterized in that: The universal circuit breaker further comprises a first switch element connected in series in the power supply circuit of the motor (5B). When the circuit breaker body (2) is in the connection position, the circuit breaker body (2) closes and simultaneously drives the first switch element to act, disconnecting the power supply circuit of the motor (5B).

2. The universal circuit breaker according to claim 1, wherein: The circuit breaker body (2) comprises an energy storage operating mechanism, and the energy storage operating mechanism comprises a rotating shaft assembly (1D) drivingly connected to the moving contact of the circuit breaker body (2), and the rotating shaft assembly (1D) is drivingly cooperated with the first switch element.

3. The universal circuit breaker according to claim 2, characterized in that: The rotating shaft assembly (1D) comprises a rotating shaft (10D), a switch driving arm (12D) and a switch driving shaft (13D). One end of the switch driving arm (12D) is connected to the rotating shaft (10D), and the other end is provided with the switch driving shaft (13D). The drawer base (1) further comprises two oppositely arranged drawer base side plates respectively arranged at both ends of the drawer base bottom plate (3A), namely a first side plate (1A) and a second side plate (2A); the drawer base (1) further comprises a first lever (20D) rotatably arranged on any one of the drawer base side plates. When the circuit breaker body (2) is in the connection position, the switch driving shaft (13D) is drivingly connected to the first lever (20D). The first switch element is arranged on the drawer base side plate on one side of the first lever (20D) and is drivingly cooperated with it. When the circuit breaker body (2) is closed in the connection position, the rotating shaft (10D) rotates and drives the switch driving arm (12D) to swing. The switch driving arm (12D) drives the first lever (20D) to swing through the switch driving shaft (13D), and the first lever (20D) drives the first switch element to act, disconnecting the power supply circuit of the motor (5B).

4. The universal circuit breaker according to claim 3, characterized in that: The middle of the first lever (20D) is rotatably arranged through a first lever rotating shaft (21D), and one end is provided with a first lever matching groove (23D). When the circuit breaker body (2) moves to the connection position, the switch driving shaft (13D) enters the first lever matching groove (23D) and is drivingly cooperated with it.

5. The universal circuit breaker according to claim 3, wherein: The drawer base (1) further includes an operating handle (1C) and a lead screw baffle (6D). The lead screw baffle (6D) includes a handle insertion hole (62D) provided thereon, and the handle insertion hole (62D) is arranged offset from one end of the lead screw (4B). The operating handle (1C) drives the lead screw baffle (6D) to move to one side, so that the handle insertion hole (62D) faces the lead screw (4B), and the operating handle (1C) passes through the handle insertion hole (62D) and is drivingly connected to the lead screw (4B). The drawer base (1) further includes a baffle limiting component (4D) that is drivingly matched with the first lever (20D). When the circuit breaker body (2) is in the closed position at the connection position, the first lever (20D) drives the baffle limiting component (4D) to act, so that the baffle limiting component (4D) is in limiting cooperation with the lead screw baffle (6D) to prevent the lead screw baffle (6D) from moving.

6. The universal circuit breaker according to claim 5, wherein: The baffle limiting component (4D) includes a second lever (43D), a block transmission arm (40D), and a baffle limiting block (42D). The middle of the second lever (43D) is rotatably arranged on the side plate of the drawer base, one end is drivingly connected to the first lever (20D), the other end is drivingly connected to the block transmission arm (40D), and the baffle limiting block (42D) is arranged at the other end of the block transmission arm (40D) and is in limiting cooperation with the lead screw baffle (6D).

7. The universal circuit breaker according to claim 6, characterized in that: The first lever (20D) is drivingly connected to the second lever (43D) through a first lever return spring (7D), and the second lever (43D) is connected to the side plate of the drawer base through a second lever return spring (8D). The drawer base (1) further includes a first lever limiting post (90D) and a second lever limiting post (91D). The first lever return spring (7D) makes the first lever (20D) abut against the first lever limiting post (90D), and the second lever return spring (8D) makes the second lever (43D) abut against the second lever limiting post (91D).

8. The universal circuit breaker according to claim 1, characterized in that: The first switch element is a microswitch SS1. The microswitch SS1 is fixedly arranged on the side plate of the drawer base and is drivingly matched with the first lever (20D) or the second lever (43D) of the drawer base (1).

9. The universal circuit breaker according to claim 1, characterized in that: The universal circuit breaker further includes a locking structure arranged on the bottom plate (3A) of the drawer base. The locking structure includes a guide rail (7B) and a locking plate assembly (3B). The guide rail (7B) is connected to the slide plate (1B) and moves synchronously. The guide rail (7B) includes three locking grooves arranged in sequence along its axial direction, namely a first locking groove (730B), a second locking groove (731B), and a third locking groove (732B) corresponding to the separation position, the test position, and the connection position respectively. The locking plate assembly (3B) is in limiting cooperation with the locking groove to lock the guide rail (7B), and at the same time, the locking plate assembly (3B) is in limiting cooperation with the lead screw (4B) to lock the lead screw (4B). The universal circuit breaker further includes a second switch element connected in series in the power supply circuit of the motor (5B). When the locking plate assembly (3B) locks the guide rail (7B) and the lead screw (4B) respectively, it drives the second switch element to disconnect the power supply circuit of the motor (5B).

10. The universal circuit breaker according to claim 9, characterized in that: The locking plate assembly (3B) includes a second mounting plate (30B) fixedly arranged on the bottom plate of the drawer seat (3A) and a locking plate (31B) arranged in parallel with the second mounting plate (30B); the second switch is a microswitch SS2, which is arranged on the second mounting plate (30B), between the second mounting plate (30B) and the locking plate (31B) and is in driving cooperation with the locking plate (31B); when the locking plate assembly (3B) locks the guide rail (7B) and the lead screw (4B) respectively, the locking plate (31B) drives the microswitch SS2 to disconnect the power supply circuit of the motor (5B).

11. The universal circuit breaker according to claim 9, wherein: The guide rail (7B) is arranged on one side of the lead screw (4B) and is parallel to it, and the electric device is arranged on the other side of the lead screw (4B).

12. The universal circuit breaker according to claim 8, wherein: The power supply circuit of the motor (5B) further includes a current commutation switch S1, a local commutation button SB1 and a remote commutation button SB2; the current commutation switch S1 includes a first common contact CT1 and a second common contact CT2, a first output contact T1 and a second output contact T2 cooperating with the first common contact CT1, and a third output contact T3 and a fourth output contact T4 cooperating with the second common contact CT2; the first common contact CT1 is connected to the first output contact T1 while the second common contact CT2 is connected to the third output contact T3, or the first common contact CT1 is connected to the second output contact T2 while the second common contact CT2 is connected to the fourth output contact T4; the first common contact CT1 is connected to the positive pole of the power supply through a first switch, and the second common contact CT2 is connected to the negative pole of the power supply; the first output contact T1 and the third output contact T3 are respectively connected to the input ends of the remote commutation button SB2, the second output contact T2 and the fourth output contact T4 are respectively connected to the input ends of the local commutation button SB1, the first output end of the local commutation button SB1 and the second output end of the remote commutation button SB2 are both connected to an input end of the motor (5B) through a second switch, the second output end of the local commutation button SB1 and the first output end of the remote commutation button SB2 are both connected to the other input end of the motor (5B), and the polarities of the first output end of the commutation button SB1 and the second output end of the commutation button SB2 are opposite.

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