An electric opening and closing device for an intelligent circuit breaker

Abstract

The present invention discloses an electric opening and closing device for an intelligent circuit breaker, which includes a driving component and a handle transmission structure installed in a housing structure. The handle transmission structure includes a transmission handle rotatably arranged in the housing structure, and a driven component rotatably arranged in the installation inner cavity of the transmission handle through a rotating shaft. When performing opening and closing operations, the gear structure on the driven component is driven by the driving component to drive two driving cams to rotate synchronously. By the two driving cams abutting on two boss structures inside the transmission handle, a driving force required for performing closing or opening is applied to the transmission handle. Two force-bearing mating surfaces are formed by the two driving bosses abutting against the two boss structures, increasing the structural strength, making the force more uniform and stable, and improving the service life of the gear structure. The transmission handle can be used in cooperation with circuit breakers of different models through a push rod linkage part, reducing the setting cost and improving the use performance and market competitiveness of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and particularly relates to an electric opening and closing device for an intelligent circuit breaker. Background Art

[0002] With the popularization of the smart grid, the use of prepaid electricity meters, which are electricity metering devices, has become increasingly widespread. However, traditional manually operated circuit breakers can no longer meet the requirements of the smart grid. Therefore, the usage of smart circuit breaker products specifically matched with prepaid electricity meters is increasing. Currently, smart circuit breakers mainly consist of a circuit breaker unit and a reclosing unit, which can achieve automatic reclosing operation without the need for staff to manually open and close the circuit breaker, effectively saving manpower and material resources.

[0003] For example, Chinese Patent Document CN 204537958 U discloses a circuit breaker provided with a coaxial transmission mechanism, including a circuit breaker and a closing and opening module for controlling the opening and closing of the circuit breaker. The circuit breaker includes a first housing, and a handle, a tripping mechanism, a moving contact, and a static contact are provided inside the first housing; the closing and opening module includes a second housing, and a motor, a gear transmission mechanism, and a driving wheel are provided inside the second housing. The motor drives the driving wheel through the gear transmission mechanism, and a transmission shaft connected in a coaxial and linked manner is connected to the driving wheel. The transmission shaft passes through the axis of the handle and drives the handle to rotate. In the above circuit breaker, since the transmission shaft connects the handle and the driving wheel, the transmission shaft is directly subjected to the final impact of the driving wheel. When the gear transmission mechanism drives the driving wheel to rotate, it will cause an impact and shaking problem to the transmission shaft, resulting in unbalanced force on the transmission shaft, causing shaking or even bending deformation, so that the handle shakes together with the transmission shaft, and the transmission is unstable, affecting the automatic reclosing operation.

[0004] The existing reclosing device is usually installed as a whole on one side of the circuit breaker. In order to match different types of circuit breakers, a method different from the above-mentioned coaxial transmission is adopted. For example, Chinese patent document CN212907611U discloses a single-module width actuator for automatic reclosing, including a housing, an electric control mechanism, an operating handle, a linkage gear and a reset torsion spring. The operating handle is arranged outside the housing and the operating handle is linked to the linkage gear. The electric control mechanism includes a motor, a gear transmission assembly and a control unit. The gear transmission assembly includes a plurality of gear sets that cooperate with the linkage gear for transmission. An installation space is formed on the transmission part of the operating handle. The linkage gear is arranged in the installation space through a rotating shaft. The outer edge of the linkage gear is formed with a gear tooth notch along the circumferential direction, and a gear tooth notch is formed on the gear tooth. Two abutment surfaces are formed at the tooth notch, and the transmission part is located in the installation space and has a limiting convex strip abutting against the abutment surfaces. This type of reclosing actuator can form a linkage relationship between the two by simply putting the operating handle on the circuit breaker handle. However, it can be seen from the structure of the above-mentioned actuator that it still has the following problems: this linkage gear only has half of the gear tooth part, and the two abutment surfaces are connected to the two gear teeth at both ends of the gear tooth part of the linkage gear, that is, as the side parts of the two gear teeth, the force-bearing surface of the abutment is relatively small, and the torque is large, so that the gear tooth part is also under great pressure when the abutment surface is subjected to force. During long-term and frequent use, this force impact can easily cause the gear tooth part to be damaged or even broken, the structural stability is poor, the gear service life is shortened, and the product performance is affected. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the tooth part of the linkage gear is subjected to pressure synchronously when the abutment surface is subjected to force, which easily causes the tooth part to be damaged or even broken, and the structural stability is poor, affecting the performance of the product. The present invention thus provides good transmission stability, protects the gear part, applies uniform and stable force to the handle part, and is an electric opening and closing device that can be used with circuit breakers of different models.

[0006] In order to solve the above technical problems, the present invention provides an electric opening and closing device for an intelligent circuit breaker, comprising a circuit breaker body and an electric control module installed on one side of the circuit breaker body; the electric control module comprises a housing structure, and a drive component and a handle transmission structure installed on the housing structure, the drive component drives the circuit breaker handle on the circuit breaker body through the handle transmission structure to perform a closing or opening action; the handle transmission structure comprises:

[0007] A transmission handle is rotatably arranged on the housing structure, comprising an installation inner cavity and two boss structures formed in the installation inner cavity along an arc trajectory around the rotation center of the transmission handle, and a push rod linkage portion exposed above the housing structure and forming a linkage with the circuit breaker handle, wherein the two boss structures are opposite to each other and a gap is formed between them;

[0008] The driven component is rotatably arranged in the installation inner cavity through a rotating shaft, and includes a gear structure correspondingly connected between the two boss structures, and two driving cams symmetrically arranged on both side surfaces of the gear structure. The two boss structures are respectively located on the movement trajectories of the two driving cams; the gear structure is connected to the driving component and drives the two driving cams to rotate forward or backward under the drive of the driving component, so that when the two boss structures are synchronously pushed by the two driving cams, the transmission handle is driven to perform a closing or opening action.

[0009] As a preferred solution, the push rod linkage part is formed in a strip shape on the top arc surface of the transmission handle, and is provided with a handle card slot suitable for sleeving on the handle of the circuit breaker.

[0010] As a preferred solution, the transmission handle is rotatably arranged coaxially with the driven component. The gear structure, the driving cam and the transmission handle are respectively provided with shaft holes for passing through the rotating shaft. Two hollow shaft rods are formed on both side walls of the transmission handle along the axial direction of the shaft hole. Two positioning shafts rotatably connected to the two hollow shaft rods are arranged on the housing structure. Both ends of the rotating shaft pass through the hollow shaft rods and are rotatably connected to the two positioning shafts.

[0011] As a preferred solution, a set of first grooves and second grooves are respectively arranged at both ends of the two boss structures. When the two driving cams push against the first grooves, the transmission handle is driven to perform closing, and when the two driving cams push against the second grooves, the transmission handle is driven to perform opening; after the transmission handle realizes closing or opening, the gear structure drives the driving cam to rotate away from the boss structure by a certain stroke under the drive of the driving component and then resets to the initial position.

[0012] As a preferred solution, the driving cam includes a round shaft part provided with the shaft hole, and a boss part connected to the round shaft part and in an arc shape. Two reinforcing ribs are respectively arranged between the inner side walls of both sides of the installation inner cavity and the two boss structures; an arc groove located between the first groove and the second groove is arranged on the boss structure, the round shaft part is rotatably connected to the arc groove, and both ends of the boss part respectively push against the first groove and the second groove during the rotation of the driving cam.

[0013] As a preferred solution, a control circuit board for controlling and connecting the driving component is further arranged in the housing structure, and a detection structure for detecting the working state information of the circuit breaker body is arranged between the control circuit board and the handle transmission structure.

[0014] As a preferred solution, arc-shaped grooves are respectively formed on the two side walls of the transmission handle corresponding to the opening positions of the installation inner cavity; the detection structure includes two trigger rods arranged on one side wall of the transmission handle near both ends of the arc-shaped groove, and two first trigger switches arranged on the control circuit board and located on the movement paths of the two trigger rods respectively. The two trigger rods drive the two first trigger switches to be alternately turned on or off when the transmission handle completes closing or opening; or,

[0015] The detection structure includes two measured parts arranged on one side wall of the transmission handle, and position induction switches correspondingly arranged on the control circuit board. The position induction switches respectively detect the two measured parts and trigger to turn on when the transmission handle completes closing or opening.

[0016] As a preferred solution, the detection structure further includes a cylindrical structure arranged on one of the drive cams towards the control circuit board, a raised block formed on the top edge of the cylindrical structure, and a second trigger switch arranged on the control circuit board. The cylindrical structure reciprocates along the arc-shaped groove, and when the gear structure rotates to the initial position, it drives the raised block to drive the second trigger switch to turn on; or,

[0017] The detection structure further includes a measured part arranged in a concave hole at the top of the cylindrical structure, and a position induction switch correspondingly arranged on the control circuit board. The position induction switch detects the measured part on the cylindrical structure and triggers to turn on when the gear structure rotates to the initial position.

[0018] As a preferred solution, a receiving interval suitable for accommodating the drive assembly is arranged in the housing structure, and a cover member is buckled on the receiving interval to cover the drive assembly. The receiving interval is communicated with the handle interval where the handle transmission structure is located; the drive assembly includes a motor arranged in the receiving interval, a worm gear linked to the output shaft of the motor, and at least one transmission gear meshed between the worm gear and the gear structure. The gear structure is an incomplete gear and has a round wheel part suitable for connecting in the interval gap.

[0019] As a preferred solution, an arc-shaped tripping hole is arranged between the housing structure and the circuit breaker body. A tripping shaft is correspondingly arranged in the circuit breaker body for the tripping hole. A tripping structure for driving the tripping shaft to perform a tripping action is arranged on the housing structure; the tripping structure includes:

[0020] The driving block is slidably arranged in the housing structure. When one end of the driving block is driven by an external force, it moves upward and extends out of the top of the housing structure, and one end of the driving block is locked outside the top of the housing structure through a locking component. An opening groove suitable for accommodating one end of the driving block is arranged at the top of the housing structure;

[0021] The rotating push rod is rotatably arranged in the housing structure and is connected to the driving block. It has a lever structure that penetrates into the tripping hole and cooperates with the tripping shaft. When the driving block moves outward towards the outside of the housing structure, it pushes the rotating push rod to rotate, and the rotating push rod drives the tripping shaft to perform a tripping action through the lever structure;

[0022] The spring structure is arranged between the housing structure and the driving block along the moving direction of the driving block, and applies an elastic force to the driving block to reset and move downward into the housing structure.

[0023] As a preferred solution, the driving block includes a driving bevel arranged on one side thereof, and an arc-shaped positioning groove connected to the upper end of the driving bevel. The rotating push rod has a round rod portion slidably connected between the driving bevel and the arc-shaped positioning groove. When the driving block moves upward, it pushes the round rod portion through the driving bevel to drive the rotating push rod to drive the lever structure to rotate.

[0024] The technical solution of the present invention has the following advantages compared with the prior art:

[0025] 1. In the electric opening and closing device for an intelligent circuit breaker provided by the present invention, the driven component is rotatably arranged in the installation inner cavity of the transmission handle. When performing opening and closing operations, the gear structure on the driven component is driven by the driving component to drive two driving cams to rotate synchronously. By abutting the two driving cams against two boss structures inside the transmission handle, the driving force required for performing closing or opening is applied to the transmission handle. The advantage of such a design is that two force-bearing mating surfaces are formed by the two driving bosses and the two boss structures on both sides of the gear structure, increasing the structural strength, being able to withstand a greater torque effect, with the force being more uniform and stable, and the transmission being stable and reliable. The tooth part of the gear structure does not come into any contact with the transmission handle to avoid being damaged, improving the service life of the gear structure. Moreover, the transmission handle forms a linkage cooperation with the circuit breaker handle through the push rod linkage part, so that when the transmission handle performs closing or opening actions, it drives the circuit breaker to perform a reclosing operation. Such a design can not only avoid the impact of the circuit breaker handle by the final-stage gear, with good transmission stability, but also be compatible with different models of circuit breakers, making the electric opening and closing device more comprehensively compatible with the circuit breaker, having more selectivity, good versatility, reducing the setting cost, and improving the use performance and market competitiveness of the product.

[0026] 2. In the electric opening and closing device for the intelligent circuit breaker provided by the present invention, when the gear structure rotates forward under the drive of the drive assembly, it drives the two drive bosses to push against the first grooves of the two boss structures, thereby driving the transmission handle to perform the closing action; conversely, when the gear structure rotates backward under the drive of the drive assembly, it drives the two drive bosses to push against the second grooves of the two boss structures, thereby driving the transmission handle to perform the opening action. This design of the first groove and the second groove plays a role of fixed-point connection between the boss structure and the drive boss, with the stress point concentrated and the transmission being relatively stable. In addition, after the circuit breaker is closed or opened, the gear structure rotates and resets to the initial position under the drive of the drive assembly, and drives the drive cam to separate from the boss structure, that is, the gear structure and the drive boss no longer limit and hold the transmission handle in place for closing or opening, so that the transmission handle can move freely with the circuit breaker handle, thereby enabling the manual opening and closing operation of the circuit breaker.

[0027] 3. In the electric opening and closing device for the intelligent circuit breaker provided by the present invention, two trigger rods are provided on one side wall of the transmission handle, and two first trigger switches are correspondingly provided on the control circuit board. The two touch rods rotate following the transmission handle. When the transmission handle completes the closing operation, it drives one of the first trigger switches to turn on through one of the trigger rods, and the first trigger switch sends a signal indicating that the circuit breaker is closed; when the transmission handle completes the opening operation, it drives the other first trigger switch to turn on through the other trigger rod, and the first trigger switch sends a signal indicating that the circuit breaker is opened, so that the opening and closing working information of the circuit breaker can be accurately known. Although the mechanical trigger switch detection method is adopted in this technical solution, an electronic position induction switch detection method can also be adopted. For example, when the transmission handle closes or opens, it drives two measured parts to pass through the position induction switch respectively, and the position induction switch sends a signal about the closing or opening of the circuit breaker when it detects the two measured parts respectively. This kind of position induction switch can be selected from Hall switches, photoelectric induction switches, etc., and the opening and closing state information of the circuit breaker can also be obtained.

[0028] 4. In the electric opening and closing device for the intelligent circuit breaker provided by the present invention, by manually pulling one end of the driving block out of the opening groove at the top of the housing, during the upward movement of the driving block, the rotating push rod is pushed to rotate by a certain angle, so that during the rotation of the rotating push rod, the tripping shaft is triggered to perform a tripping action through the lever structure, realizing the tripping and opening of the circuit breaker. Then, the locking end extending out of the opening groove is locked by the locking component to prevent the driving block from resetting and moving into the housing structure. In this way, the tripping shaft is limited by the lever structure and always remains in the tripped position, thereby keeping the circuit breaker in a locked open state. This can not only prevent the accidental closing operation of the circuit breaker manually, but also prevent the accidental operation of the reclosing device for remote closing without knowledge. By preventing the accidental closing of the circuit breaker, the safe operation of the line maintenance work can be guaranteed. This structural design is simple, the cooperation is reliable, the safe tripping and opening of the circuit breaker are realized, the risk of electric shock caused by accidental closing is prevented, and the safety and reliability of product use are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 Schematic three-dimensional structure diagram of the electric opening and closing device for the intelligent circuit breaker of the present invention;

[0031] Figure 2 Schematic structure diagram of the electric opening and closing device of the present invention in the closed state;

[0032] Figure 3 Schematic structure diagram of the electric opening and closing device of the present invention in the open state;

[0033] Figure 4 Schematic exploded structure diagram of the transmission handle and the driven component of the present invention;

[0034] Figure 5 Schematic structure diagram of the driven component of the present invention;

[0035] Figure 6 Schematic structure diagram of the housing structure of the present invention;

[0036] Figure 7 Schematic installation structure diagram of the detection structure of the present invention;

[0037] Description of the reference numerals: 1. housing structure; 11. positioning shaft; 12. accommodation section; 13. tripping hole; 2. transmission handle; 21. installation inner cavity; 22. boss structure; 221. first groove; 222. second groove; 223. arc groove; 23. push rod linkage part; 24. hollow shaft rod; 25. arc groove; 3. driven component; 31. gear structure; 32. driving cam; 321. round shaft part; 322. cam part; 33. shaft hole; 4. driving assembly; 41. motor; 42. worm; 43. transmission gear; 5. control circuit board; 51. first trigger switch; 52. second trigger switch; 53. first position sensing switch; 54. second position sensing switch; 61. trigger rod; 62. cylindrical structure; 63. raised block; 71. first measured part; 72. second measured part; 8. tripping structure; 81. driving block; 811. driving bevel edge; 812. arc positioning groove; 82. rotating push rod; 821. round rod part; 9. circuit breaker body; 91. circuit breaker handle. Detailed implementation manners

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] Embodiment 1

[0042] This embodiment provides an electric closing and opening device for an intelligent circuit breaker as shown in Figure 1 Figure 7, including an electric control module installed on one side of the circuit breaker body 9; the electric control module includes a housing structure 1, a driving assembly 4 and a handle transmission structure installed on the housing structure 1, and the driving assembly 4 drives the circuit breaker handle 91 on the circuit breaker body 9 to perform closing or opening actions through the handle transmission structure; the handle transmission structure includes:

[0043] The transmission handle 2 is rotatably arranged on the housing structure 1, and includes an installation inner cavity 21 and two boss structures 22 formed in the installation inner cavity 21 along an arc track around the rotation center of the transmission handle 2, and a push rod linkage part 23 exposed above the housing structure 1 and forming a linkage fit with the circuit breaker handle 91. An interval gap is formed between the two opposite boss structures 22;

[0044] The driven component 3 is rotatably arranged in the installation inner cavity 21 through a rotating shaft, and includes a gear structure 31 correspondingly connected between the two boss structures 22, and two driving cams 32 symmetrically arranged on both side surfaces of the gear structure 31. The two boss structures 22 are respectively located on the movement tracks of the two driving cams 32; the gear structure 31 is connected to the driving component 4, and drives the two driving cams 32 to rotate forward or backward under the drive of the driving component 4, so that when the two boss structures 22 are simultaneously pushed by the two driving cams 32, the transmission handle 2 is driven to perform a closing or opening operation.

[0045] In the above embodiment, when the electric closing and opening device performs a closing and opening operation, the gear structure 31 on the driven component 3 is driven by the driving component 4 to drive the two driving cams 32 to rotate synchronously. By abutting the two driving cams 32 against the two boss structures 22 inside the transmission handle 2, a driving force required for closing or opening is applied to the transmission handle 2. The advantage of such a design is that two force-bearing mating surfaces are formed by the two driving cams 32 and the two boss structures 22 on both sides of the gear structure 31, increasing the structural strength, being able to withstand a greater torque, with the force being more uniform and stable, and the transmission being stable and reliable. The tooth part on the gear structure 31 does not come into contact with the transmission handle 2 to avoid damage, improving the service life of the gear structure 31. Moreover, the transmission handle 2 forms a linkage fit with the circuit breaker handle 91 through the push rod linkage part 23, so that when the transmission handle 2 performs a closing or opening operation, the circuit breaker is driven to perform a reclosing operation. Such a design can not only avoid the impact of the circuit breaker handle 91 by the final-stage gear, with good transmission stability, but also be compatible with different models of circuit breakers, making the electric closing and opening device more comprehensive, selective, and versatile when used in combination with the circuit breaker, reducing the setting cost, and improving the use performance and market competitiveness of the product.

[0046] As a preferred embodiment, the push rod linkage portion 23 is formed in a long strip shape on the top arc surface of the transmission handle 2, and is provided with a handle slot suitable for being mounted on the circuit breaker handle 91. With this structural arrangement, the push rod linkage portion 23 only needs to be mounted on the circuit breaker handle 91 through the handle slot, thereby assembling the push rod linkage portion 23 and the circuit breaker handle 91 together along their length directions. The assembly is relatively convenient, the contact area is increased, and the installation stability is good, so that the transmission handle 2 and the circuit breaker handle 91 form a linkage match. The push rod linkage portion 23 with this structural design can be used in conjunction with handles of various models of circuit breakers, can meet the installation and use needs of electric opening and closing devices and most circuit breakers on the market, and has a wide range of uses.

[0047] Combine the following Figure 1 5. Detailed description of the specific setting of the transmission handle and the driven parts:

[0048] A group of first grooves 221 and second grooves 222 are respectively provided at both ends of the two boss structures 22. When the gear structure 31 rotates forwardly under the drive of the driving component 4, it drives the two driving cams 32 to push against the first grooves 221 of the two boss structures 22, thereby driving the transmission handle 2 to perform a closing action; and when the gear structure 31 rotates reversely under the drive of the driving component 4, it drives the two driving cams 32 to push against the second grooves 222 of the two boss structures 22, thereby driving the transmission handle 2 to perform a closing action. This design of the first groove 221 and the second groove 222 plays a fixed-point connection role between the boss structure 22 and the driving cam 32, the force points are concentrated, and the coordinated transmission is relatively stable. In summary, the gear structure 31 is in the closing position when the transmission handle 2 is fully closed, and is in the opening position when the transmission handle 2 is fully opened. In order not to limit the free rotation of the transmission handle 2, after the transmission handle 2 is closed or opened, the gear structure 31 drives the drive cam 32 to rotate a certain distance away from the boss structure 22 under the drive of the drive assembly 4, and then resets to the initial position, that is, the gear structure 31 and the drive cam 32 are no longer limited to resist the transmission handle 2 in the closed or opened position, so that the transmission handle 2 can move freely with the circuit breaker handle 91, thereby realizing the manual closing and opening operation of the circuit breaker. It should be noted that the forward rotation and reverse rotation in this article refer to the opposite rotation directions of a certain component, and do not indicate its actual rotation direction.

[0049] As a specific structural setting, such as Figure 5As shown, the drive cam 32 includes a circular shaft portion 321 provided with a shaft hole 33, and a boss portion connected to the circular shaft portion 321 and having an arc shape. Two reinforcing ribs are respectively provided between the two inner side walls of the installation inner cavity 21 and the two boss structures 22. Through the reinforcing ribs, the structural strength of the boss structure 22 can be enhanced, and it can withstand greater pressure. Among them, an arc-shaped groove 223 is provided on the boss structure 22 between the first groove 221 and the second groove 222. The circular shaft portion 321 is rotatably connected to the arc-shaped groove 223. During the rotation of the drive cam 32, the two ends of the boss portion respectively abut against the first groove 221 and the second groove 222, thereby driving the transmission handle 2 to rotate for closing or opening the switch.

[0050] Combined with Figure 4 As shown in FIG. 6, the transmission handle 2 is rotatably arranged coaxially with the driven component 3. Shaft holes 33 for passing through the rotating shaft are respectively provided on the gear structure 31, the drive cam 32 and the transmission handle 2. The rotating shaft is arranged in linkage cooperation with the driven component 3 and can rotate relative to the transmission handle 2. Two hollow shaft rods 24 are formed on both side walls of the transmission handle 2 along the axial direction of the shaft hole 33. Two positioning shafts 11 rotatably connected to the two hollow shaft rods 24 are provided on the housing structure 1. A rotating hole is provided in the positioning shaft 11. Both ends of the rotating shaft pass through the hollow shaft rods 24 and are rotatably connected to the two positioning shafts 11. Through the above structure, it can be seen that the transmission handle 2 is rotatably connected to the housing structure 1 through the cooperation of the hollow shaft rods 24 and the positioning shafts 11, and the driven component 3 is rotatably connected to the installation inner cavity 21 of the transmission handle 2 through the rotating shaft, that is, the gear structure 31 is not directly linked to the transmission handle 2. It is necessary to push against the boss structure 22 to drive the transmission handle 2 to rotate. When the gear structure 31 returns to the initial position, the transmission handle 2 is not restricted by the boss structure 22 and can be freely operated for closing and opening the switch.

[0051] In this embodiment, a control circuit board 5 for controlling and connecting the drive assembly 4 is further provided in the housing structure 1. A detection structure for detecting the working state information of the circuit breaker body 9 is provided between the control circuit board 5 and the handle transmission structure.

[0052] As a preferred embodiment, combined with Figure 2 3, Figure 7As shown in the figure, arc-shaped grooves 25 are respectively formed on both side walls of the transmission handle 2 corresponding to the opening positions of the installation inner cavity 21; the detection structure includes two trigger rods 61 disposed on one side wall of the transmission handle 2 near both ends of the arc-shaped groove 25, and two first trigger switches 51 disposed on the control circuit board 5 and respectively located on the movement paths of the two trigger rods 61. The two trigger rods 61 drive the two first trigger switches 51 to be alternately turned on or off when the transmission handle 2 completes closing or opening. With this structural arrangement, the two trigger rods 61 rotate following the transmission handle 2. When the transmission handle 2 completes the closing operation, one of the trigger rods 61 drives one of the first trigger switches 51 to be turned on, causing the first trigger switch 51 to send a signal indicating that the circuit breaker is closed; when the transmission handle 2 completes the opening operation, the other trigger rod 61 drives the other first trigger switch 51 to be turned on, causing the first trigger switch 51 to send a signal indicating that the circuit breaker is opened. Thus, the opening and closing working information of the circuit breaker can be accurately known, ensuring the safe use of the circuit breaker.

[0053] Although the above preferably adopts the mechanical first trigger switch 51 detection method, obviously, an electronic first position induction switch 53 detection method can also be adopted. For details, refer to Figure 7 As shown in the figure, the detection structure includes two first measured parts 71 disposed on one side wall of the transmission handle 2, and a first position induction switch 53 correspondingly disposed on the control circuit board 5. The first position induction switch 53 is respectively triggered to be turned on when detecting the two first measured parts 71 when the transmission handle 2 completes closing or opening. Its working mode is as follows: when the transmission handle 2 closes or opens, it drives the two first measured parts 71 to respectively pass by the first position induction switch 53. When the first position induction switch 53 respectively detects the two first measured parts 71, it sends a signal regarding the closing or opening of the circuit breaker. The first position induction switch 53 can be a Hall switch, and the two first measured parts 71 are permanent magnets; or the first position induction switch 53 can be a photoelectric induction switch, and the two first measured parts 71 are emitters that can send photoelectric signals. Such settings can all obtain the opening and closing state information of the circuit breaker.

[0054] In order to detect whether the gear structure 31 and the driving cam 32 are reset to the initial positions, refer to Figure 7As shown, the detection structure also includes a cylindrical structure 62 arranged on one of the driving cams 32 facing the control circuit board 5, a protruding block 63 formed on the top edge of the cylindrical structure 62, and a second trigger switch 52 arranged on the control circuit board 5. The cylindrical structure 62 reciprocates along the arc groove 25. When the gear structure 31 rotates to the initial position, it drives the protruding block 63 to drive the second trigger switch 52 to turn on, so that the second trigger switch 52 generates a signal indicating that the gear structure 31 is reset. At this time, the staff can know that the circuit breaker handle 91 is in a free state and can perform manual opening and closing operations.

[0055] As an alternative embodiment, the detection structure also includes a second measured part 72 arranged in a recessed hole at the top of the cylindrical structure 62, and a second position sensing switch 54 correspondingly arranged on the control circuit board 5. The second position sensing switch 54 detects the second measured part 72 on the cylindrical structure 62 and triggers it to turn on when the gear structure 31 rotates to the initial position. Although the above technical solution adopts a mechanical second trigger switch 52 detection method, an electronic second position sensing switch 54 detection method can also be adopted. The second position sensing switch 54 can be a Hall switch or a photoelectric sensing switch, etc., which can also detect the reset status of the gear structure 31.

[0056] like Figure 6 As shown, the housing structure 1 is provided with a housing section 12 suitable for accommodating the drive assembly 4, and a cover member snapped onto the housing section 12 to cover the drive assembly 4, the housing section 12 is connected to the handle section where the handle transmission structure is located; the drive assembly 4 includes a motor 41 arranged in the housing section 12, and a worm 42 linked to the output shaft of the motor 41, and at least one transmission gear 43 meshingly connected between the worm 42 and the gear structure 31, the gear structure 31 is an incomplete gear, which has a circular wheel part suitable for connecting in the interval gap, and the torque output by the motor 41 is transmitted to the transmission handle 2 through the cooperation of the transmission gear 43 and the gear structure 31, and the transmission handle 2 drives the circuit breaker handle 91 to rotate synchronously during the opening and closing rotation process, thereby realizing the opening and closing operation of the circuit breaker.

[0057] Combination Figure 2As shown in FIG. 3, an arc-shaped tripping hole 13 is provided between the housing structure 1 and the circuit breaker body 9. A tripping shaft is provided in the circuit breaker body 9 corresponding to the tripping hole 13. That is, the circuit breaker remains in the closed state when the tripping shaft is in the closed position and in the open state when the tripping shaft is in the open position. In order to achieve the safe tripping of the circuit breaker to ensure the safety of line maintenance work, a tripping structure 8 for driving the tripping shaft to perform a tripping action is provided on the housing structure 1.

[0058] As a specific structural arrangement, the tripping structure 8 includes a driving block 81, a rotating push rod 82, and a spring structure (the spring structure is not shown in the drawings). Among them, the driving block 81 is slidably arranged in the housing structure 1. When one end of it is driven by an external force, it moves upward and extends out of the top of the housing structure 1, and the one end of the driving block 81 is locked outside the top of the housing structure 1 through a locking component. An opening groove suitable for accommodating one end of the driving block 81 is provided at the top of the housing structure 1; the rotating push rod 82 is rotatably arranged in the housing structure 1 and is connected to the driving block 81. It has a lever structure that penetrates into the tripping hole and cooperates with the tripping shaft. When the driving block 81 moves outward toward the outside of the housing structure 1, it pushes the rotating push rod 82 to rotate. The rotating push rod 82 drives the tripping shaft to perform a tripping action through the lever structure; the spring structure is arranged between the housing structure 1 and the driving block 81 along the moving direction of the driving block 81, and applies an elastic force to the driving block 81 to reset and move downward into the housing structure 1; the locking component includes a locking hole provided at one end of the driving block 81 and a padlock member inserted into the locking hole, and the one end of the driving block is restricted from resetting into the housing by the padlock member.

[0059] From the above structure, it can be seen that when it is necessary to lock the circuit breaker in the open and disconnected position, as long as one end of the driving block 81 is manually pulled out of the opening groove at the top of the housing, the driving block 81 pushes the rotating push rod 82 to rotate a certain angle during the upward movement, so that the rotating push rod 82 triggers the tripping shaft to perform a tripping action through the lever structure during the rotation process, realizing the tripping and opening of the circuit breaker. Then, the locking end extending out of the opening groove is locked through the locking component to prevent the driving block 81 from resetting and moving into the housing structure 1. In this way, the tripping shaft is limited by the lever structure and always remains in the tripping position, thereby keeping the circuit breaker locked in the open state. This can not only prevent the accidental closing operation of the circuit breaker manually, but also prevent the accidental operation of the reclosing device to perform remote closing without knowledge. By preventing the accidental closing of the circuit breaker, the safe operation of line maintenance work can be ensured. This structural design is simple, the cooperation is reliable, the safe tripping and opening of the circuit breaker are realized, the risk of accidental closing and electric shock is prevented, and the safety and reliability of product use are improved.

[0060] In order to reliably achieve the transmission cooperation between the driving block 81 and the rotating push rod 82, the driving block 81 includes a driving bevel edge 811 provided on one side thereof, and an arc-shaped positioning groove 812 connected to the upper end of the driving bevel edge 811. The rotating push rod 82 has a round rod portion 821 slidably connected between the driving bevel edge 811 and the arc-shaped positioning groove 812. The rotating push rod 82 is in a hook shape. The round rod portion 821 and the lever structure are respectively arranged at both ends of the rotating push rod 82, so that the round rod portion 821 and the lever structure rotate together with the rotating push rod 82. Therefore, when the driving block 81 moves upward, the round rod portion 821 is pushed by the driving bevel edge 811 to drive the rotating push rod 82 to drive the lever structure to rotate. During the rotation process, the lever structure triggers the tripping shaft to perform a tripping action, realizing the tripping and opening of the circuit breaker; when the driving block 81 is reset under the action of the spring structure, the rotating push rod 82 is no longer subjected to the pushing action of the driving block 81, that is, the lever structure will not continue to apply force to the tripping shaft. The rotating push rod can be provided with a reset torsion spring for automatic reset, or can be reset under the push of the tripping shaft.

[0061] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. An electric closing and opening device for an intelligent circuit breaker, comprising an electric control module installed on one side of a circuit breaker body (9); the electric control module includes a housing structure (1), a driving component (4) installed on the housing structure (1), and a handle transmission structure, and the driving component (4) drives a circuit breaker handle (91) on the circuit breaker body (9) to perform a closing or opening action through the handle transmission structure; characterized in that, The handle transmission structure includes: A transmission handle (2) rotatably arranged on the housing structure (1), including an installation inner cavity (21), two boss structures (22) formed in the installation inner cavity (21) along an arc trajectory around the rotation center of the transmission handle (2), and a push rod linkage part (23) exposed above the housing structure (1) and forming a linkage cooperation with the circuit breaker handle (91). A spaced gap is formed between the two boss structures (22) facing each other; A driven component (3) rotatably arranged in the installation inner cavity (21) through a rotating shaft, including a gear structure (31) correspondingly connected between the two boss structures (22), and two driving cams (32) symmetrically arranged on both side surfaces of the gear structure (31). The two boss structures (22) are respectively located on the movement trajectories of the two driving cams (32); the gear structure (31) is connected to the driving component (4) and drives the two driving cams (32) to rotate forward or backward under the drive of the driving component (4), so that when the two boss structures (22) are simultaneously pushed by the two driving cams (32), the transmission handle (2) is driven to perform a closing or opening action; Wherein, a set of first grooves (221) and second grooves (222) are respectively arranged at both ends of the two boss structures (22), and an arc groove (223) is arranged on the boss structure (22) between the first groove (221) and the second groove (222); the driving cam (32) includes a circular shaft part (321) provided with a shaft hole (33), and a boss part connected to the circular shaft part (321) and in an arc shape. The circular shaft part (321) is rotatably connected in the arc groove (223), and both ends of the boss part respectively abut against the first groove (221) and the second groove (222) during the rotation of the driving cam (32) to drive the transmission handle (2) to perform closing or opening.

2. The electric opening and closing device for an intelligent circuit breaker according to claim 1, wherein: The push rod linkage part (23) is formed in a strip shape on the top arc surface of the transmission handle (2) and is provided with a handle card slot suitable for sleeving on the circuit breaker handle (91).

3. The electric opening and closing device for the intelligent circuit breaker according to claim 2, wherein: When the two driving cams (32) abut against the first groove (221), the transmission handle (2) is driven to perform closing, and when abutting against the second groove (222), the transmission handle (2) is driven to perform opening; after the transmission handle (2) realizes closing or opening, the gear structure (31) drives the driving cam (32) to rotate away from the boss structure (22) by a certain stroke under the drive of the driving component (4) and then resets to the initial position.

4. The electric opening and closing device for the intelligent circuit breaker according to claim 3, wherein: Two reinforcing ribs are respectively arranged between the inner side walls of both sides of the installation inner cavity (21) and the two boss structures (22).

5. The electric opening and closing device for an intelligent circuit breaker according to claim 1, characterized in that: The driving handle (2) is coaxially rotatably arranged with the driven component (3). Shaft holes (33) for passing through a rotating shaft are respectively and correspondingly arranged on the gear structure (31), the driving cam (32), and the driving handle (2). Two hollow shaft rods (24) are formed on both side walls of the driving handle (2) along the axial direction of the shaft hole (33). Two positioning shafts (11) rotatably connected to the two hollow shaft rods (24) are arranged on the housing structure (1). Both ends of the rotating shaft pass through the hollow shaft rods (24) and are rotatably connected to the two positioning shafts (11).

6. The electric opening and closing device for an intelligent circuit breaker according to any one of claims 1 to 5, characterized in that: A control circuit board (5) for controlling and connecting the driving component (4) is further arranged inside the housing structure (1). A detection structure for detecting the working state information of the circuit breaker body (9) is arranged between the control circuit board (5) and the handle transmission structure.

7. The electric opening and closing device for intelligent circuit breaker according to claim 6, characterized in that: Arc-shaped grooves (25) are respectively formed on both side walls of the driving handle (2) corresponding to the opening positions of the installation inner cavity (21); the detection structure includes two trigger rods (61) arranged on one side wall of the driving handle (2) near both ends of the arc-shaped groove (25), and two first trigger switches (51) arranged on the control circuit board (5) and respectively located on the movement paths of the two trigger rods (61). When the driving handle (2) completes closing or opening, the two trigger rods (61) drive the two first trigger switches (51) to be alternately turned on or off; or, The detection structure includes two first measured parts (71) arranged on one side wall of the driving handle (2), and a first position induction switch (53) correspondingly arranged on the control circuit board (5). When the driving handle (2) completes closing or opening, the first position induction switch (53) respectively detects the two first measured parts (71) and is triggered to turn on.

8. The electric opening and closing device for the intelligent circuit breaker according to claim 7, wherein: The detection structure further includes a cylindrical structure (62) arranged on one of the driving cams (32) facing the control circuit board (5), a raised block (63) formed on the top edge of the cylindrical structure (62), and a second trigger switch (52) arranged on the control circuit board (5). The cylindrical structure (62) reciprocates along the arc-shaped groove (25). When the gear structure (31) rotates to the initial position, the raised block (63) drives the second trigger switch (52) to be turned on; or, The detection structure further includes a second measured part (72) arranged in a concave hole on the top of the cylindrical structure (62), and a second position induction switch (54) correspondingly arranged on the control circuit board (5). When the gear structure (31) rotates to the initial position, the second position induction switch (54) detects the second measured part (72) on the cylindrical structure (62) and is triggered to turn on.

9. The electric closing and opening device for an intelligent circuit breaker according to claim 1, wherein: The housing structure (1) is provided with a receiving space (12) suitable for accommodating the drive assembly (4), and a cover member snapped onto the receiving space (12) to cover the drive assembly (4); the receiving space (12) is connected to a handle space where the handle transmission structure is located; the drive assembly (4) comprises a motor (41) arranged in the receiving space (12), a worm (42) linked to an output shaft of the motor (41), and at least one transmission gear (43) meshingly connected between the worm (42) and a gear structure (31); the gear structure (31) is an incomplete gear.

10. The electric opening and closing device for an intelligent circuit breaker according to any one of claims 1 to 5, 7 to 9, characterized in that: An arc-shaped tripping hole (13) is provided between the housing structure (1) and the circuit breaker body (9); a tripping shaft is provided in the circuit breaker body (9) corresponding to the tripping hole (13); and a tripping structure (8) for driving the tripping shaft to perform a tripping action is provided on the housing structure (1); the tripping structure (8) comprises: A driving block (81) is slidably arranged in the housing structure (1), one end of which moves upward and extends out of the top of the housing structure (1) when driven by an external force, and one end of the driving block (81) is locked outside the top of the housing structure (1) by a locking assembly, and an open groove suitable for accommodating one end of the driving block (81) is provided on the top of the housing structure (1); A rotary push rod (82) is rotatably arranged in the housing structure (1) and connected to the driving block (81), and has a lever structure that penetrates into the tripping hole (13) and cooperates with the tripping shaft; when the driving block (81) moves outward from the housing structure (1), it pushes the rotary push rod (82) to rotate, and the rotary push rod (82) drives the tripping shaft through the lever structure to realize a tripping action; The spring structure is arranged between the housing structure (1) and the driving block (81) along the moving direction of the driving block (81), and applies an elastic force to the driving block (81) to return it to the inside of the housing structure (1) and move downward.

11. The electric opening and closing device for intelligent circuit breaker according to claim 10, wherein: The driving block (81) comprises a driving bevel (811) arranged on one side thereof, and an arc-shaped positioning groove (812) connected to the upper end of the driving bevel (811); the rotating push rod (82) comprises a round rod portion (821) slidably connected between the driving bevel (811) and the arc-shaped positioning groove (812); when the driving block (81) moves upward, the driving bevel (811) pushes the round rod portion (821) to drive the rotating push rod (82) to drive the lever structure to rotate.

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