Molded case circuit breaker with electric operation structure

Abstract

The invention discloses a molded case circuit breaker with an electric operation structure, and the molded case circuit breaker is characterized in that a housing is provided with a first chamber and a second chamber, and the first chamber is located above the second chamber; the operating mechanism is accommodated in the first cavity; the electric mechanism is contained in the first cavity, located on one side of the operating mechanism and matched with the operating mechanism. The manual mechanism is accommodated in the first cavity, is positioned on one side, far away from the electric mechanism, of the operating mechanism, and is matched with the operating mechanism; the main body loop is accommodated in the second cavity, and the operating mechanism is matched with the main body loop to form opening and closing operation of the molded case circuit breaker; by adopting the structure, the layout is optimized, the overall structure is compact, the integration level is high, the size of the circuit breaker is reduced, the electric mechanism is directly arranged in the molded case circuit breaker, and remote operation is facilitated.

Description

Technical Field

[0001] The invention relates to the field of electrical technology, and in particular to a molded case circuit breaker with an electric operating structure. Background Art

[0002] Circuit breakers are important switching devices in power institutions. When electrical appliances are working normally, circuit breakers can close or disconnect the circuits that supply electrical energy to achieve functions such as power outages, power supply, and circuit conversion. When electrical appliances are overloaded or short-circuited, the circuit breakers will trip to cut off the electrical circuits to avoid endangering the safety of workers and the normal operation of equipment due to circuit failures. Currently, circuit breakers have been widely used in power systems.

[0003] With the popularization of intelligence, the demand for intelligent circuit breaker products is becoming more and more urgent. To achieve the remote opening and closing function of molded case circuit breakers, the molded case circuit breakers on the market are all realized by adding an electric control module to the molded case circuit breaker body. In this way, the overall switch volume is large, and it takes up a lot of space when installed. The circuit breaker is not highly integrated and cannot meet the requirements of high-density power distribution. It will also lead to the enlargement of the electrical cabinet and increase the cost of use. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is how to reduce the volume of an intelligent molded case circuit breaker. To this end, a molded case circuit breaker with an electric operating structure comprises:

[0005] A shell, wherein the shell is provided with a first chamber and a second chamber, wherein the first chamber is located above the second chamber;

[0006] an operating mechanism, the operating mechanism being accommodated in the first chamber;

[0007] An electric mechanism, the electric mechanism is accommodated in the first chamber, the electric mechanism is located on one side of the operating mechanism, and the electric mechanism cooperates with the operating mechanism;

[0008] A manual mechanism, the manual mechanism is accommodated in the first chamber, the manual mechanism is located on a side of the operating mechanism away from the electric mechanism, and the manual mechanism cooperates with the operating mechanism;

[0009] The main circuit is accommodated in the second chamber, and the operating mechanism cooperates with the main circuit to form the opening and closing operations of the molded case circuit breaker.

[0010] The operating mechanism comprises a main shaft, one end of which cooperates with the electric mechanism, and the other end of which cooperates with the manual mechanism.

[0011] It also includes a first ratchet and a ratchet gear. The electric mechanism includes a motor and a gear set. The gear set is provided with an output gear, and the motor is linked to the gear set; the first ratchet is sleeved on the main shaft and is linked to the main shaft, the ratchet gear is sleeved on the first ratchet, the ratchet gear is linked to the first ratchet, and the ratchet gear is meshed with the output gear; when the motor works, it drives the output gear to rotate, so that the ratchet gear drives the main shaft to rotate.

[0012] One of the first ratchet and the main shaft is provided with a first engaging portion, and the other of the first ratchet and the main shaft is provided with a first engaging groove that cooperates with the first engaging portion; one of the first ratchet and the ratchet gear is provided with a stepped protrusion, and the other of the first ratchet and the ratchet gear is provided with a stepped engaging groove that cooperates with the stepped protrusion.

[0013] The manual mechanism includes a handle and a turntable, the handle is linked with the turntable, the turntable is provided with a concave cavity facing the main shaft, the concave cavity accommodates a second ratchet and a pawl, the turntable drives the pawl to move, the pawl rotates relative to the concave cavity, the pawl cooperates with the second ratchet, and the second ratchet is linked with the main shaft; the movement of the handle drives the turntable to rotate, so that the second ratchet drives the main shaft to rotate.

[0014] The concave cavity accommodates a first restoring member, one end of the first restoring member is connected to the inner wall of the concave cavity, and the other end of the first restoring member is connected to the pawl.

[0015] One of the second ratchet and the main shaft is provided with a second engaging portion, and the other of the second ratchet and the main shaft is provided with a second engaging groove matched with the second engaging portion.

[0016] It also includes a tripping module, which is located on one side of the shell. The tripping module includes an electronic module and a mechanical module. The electronic module and the mechanical module are plug-in connected; the tripping module is a thermal magnetic structure or an electronic structure; the tripping module cooperates with the main circuit.

[0017] The operating mechanism includes a lower connecting rod; the main circuit includes a moving contact component, and the moving contact component includes two cover plates, and the cover plates are arranged on both sides of the moving contact component; the second chamber accommodates a transmission wheel, the lower end of the lower connecting rod is linked to the transmission wheel, one side of the transmission wheel is linked to the cover plate, and the other side of the transmission wheel is linked to the cover plate of the adjacent moving contact component.

[0018] It also includes a pin shaft, the lower connecting rod is provided with a through hole, and the pin shaft passes through the through hole and is fixed in cooperation with the transmission wheel.

[0019] The technical solution of the present invention has the following advantages:

[0020] 1. The present invention provides a molded case circuit breaker with an electric operation structure. By adopting this structure, the layout is optimized, so that the overall structure is compact and highly integrated, the volume of the circuit breaker is reduced, and the electric mechanism is directly arranged in the molded case circuit breaker, which is convenient for remote operation.

[0021] 2. The present invention provides a molded case circuit breaker with an electric operating structure, which uses a main shaft to cooperate with an electric mechanism and a manual mechanism respectively. When the main shaft rotates, the main shaft will drive the energy storage structure of the operating mechanism to store energy. By releasing the energy stored in the energy storage structure, the output of the operating mechanism is realized. The output end of the operating mechanism will cooperate with the main circuit to form a coordinated effect of opening and closing. In addition, the electric mechanism and the manual mechanism can also cooperate with other components of the operating mechanism to form the effect of driving the entire operating mechanism to move.

[0022] 3. The present invention provides a molded case circuit breaker with an electric operation structure, in which the output gear is meshed with the ratchet gear, and the ratchet gear cooperates with the main shaft through the first ratchet wheel to achieve the rotation effect of the main shaft, thereby forming an energy storage operation of the energy storage structure.

[0023] 4. The present invention provides a molded case circuit breaker with an electric operation structure, in which the first engaging portion cooperates with the first slot to achieve a linkage effect between the first ratchet and the main shaft, which is radial engagement here, and the radial direction specifically refers to the radial direction of the main shaft; the stepped protrusion cooperates with the stepped slot to also form a linkage effect.

[0024] 5. The present invention provides a molded case circuit breaker with an electric operation structure. Pressing the handle creates a rotation effect of the turntable. The pawl drives the main shaft to rotate through the second ratchet wheel, creating an effect that the handle drives the main shaft to rotate, and finally forms energy storage in the energy storage structure.

[0025] 6. In a molded case circuit breaker with an electric operation structure provided by the present invention, the first reset member gives a reset effect to the pawl, so that the pawl re-engages with the second ratchet wheel after passing over a tooth of the second ratchet wheel.

[0026] 7. In the molded case circuit breaker with an electric operation structure provided by the present invention, the second engaging portion and the second engaging groove are also radially engaged, where the radial direction is the radial direction of the main axis.

[0027] 8. The present invention provides a molded case circuit breaker with an electric operation structure, which is equipped with a switchable trip module for users to choose, and a quick plug-in connection method improves replacement efficiency.

[0028] 9. The present invention provides a molded case circuit breaker with an electric operation structure, in which the lower connecting rod of the operating mechanism acts on the transmission wheel. The transmission wheel cooperates with the cover plate, and the rotation of the transmission wheel drives the dynamic contact assembly to rotate, so that the circuit breaker completes the opening and closing actions. Compared with the original metal shaft passing through the transmission method between the poles, the electrical gap between the poles is increased, and the leakage current between the poles is greatly reduced.

[0029] 10. The molded case circuit breaker with an electric operation structure provided by the present invention adopts a pin-shaft fixing method, which is simple and reliable. In addition, a rivet structure or a snap-on connection can also be adopted. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 An exploded schematic diagram of a molded case circuit breaker with an electric operating structure provided by the present invention;

[0032] Figure 2 A distribution diagram of a molded case circuit breaker with an electric operating structure provided by the present invention;

[0033] Figure 3 A partial side view of a molded case circuit breaker with an electric operating structure provided by the present invention;

[0034] Figure 4 A schematic diagram of the structure of the operating mechanism provided by the present invention;

[0035] Figure 5 A schematic diagram of the structure of the main shaft, electric mechanism and manual mechanism provided by the present invention;

[0036] Figure 6 for Figure 5 Exploded diagram of

[0037] Figure 7 An exploded schematic diagram of the cooperation of the operating mechanism, electric mechanism, and manual mechanism provided by the present invention;

[0038] Figure 8 An exploded schematic diagram of the cooperation of the operating mechanism, the electric mechanism and the manual mechanism provided by the present invention from another angle;

[0039] Fig. 9 An exploded schematic diagram of the cooperation between the operating mechanism and the main circuit provided by the present invention;

[0040] Fig.10A partial exploded schematic diagram of the cooperation between the operating mechanism and the main circuit provided by the present invention;

[0041] Fig.11 This is a schematic diagram of the structure of the operating mechanism and the main circuit provided by the present invention.

[0042] Description of reference numerals:

[0043] 11. Housing; 12. Operating mechanism; 13. Electric mechanism; 14. Manual mechanism; 15. Main circuit; 16. First ratchet; 17. Ratchet gear; 18. First engaging portion; 19. First slot; 20. Stepped protrusion; 21. Stepped slot; 22. Second engaging portion; 23. Second slot; 24. Trip module; 25. Moving contact assembly; 26. Cover plate; 27. Transmission wheel; 28. Pin; 29. ​​First protrusion; 30. First through hole; 31. Second protrusion; 32. Second through hole; 33. Closing button; 34. Opening button; 35. Opening and closing indicator; 36, energy storage indicator; 111, first chamber; 112, second chamber; 121, main shaft; 122, lower connecting rod; 123, linkage shaft; 131, motor; 132, gear set; 133, output gear; 141, handle; 142, turntable; 241, electronic module; 242, mechanical module; 251, moving contact body; 252, moving contact; 271, fixing groove; 272, reinforcing rib; 1221, through hole; 1421, concave cavity; 1422, second ratchet; 1423, pawl; 1424, first reset member. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] Example 1

[0049] This embodiment provides a molded case circuit breaker with an electric operating structure, as shown in the attached Figure 1-Figure 11 As shown, including:

[0050] Shell 11, shell 11 is provided with a first chamber 111 and a second chamber 112, and the first chamber 111 is located above the second chamber 112. Operating mechanism 12, operating mechanism 12 is accommodated in the first chamber 111, most of the components of operating mechanism 12 are located in the first chamber 111, and part of operating mechanism 12 extends downward to the second chamber 112. The action of operating mechanism 12 here can realize the opening and closing operation of molded case circuit breaker. Operating mechanism 12 is provided with an energy storage structure, and the energy storage structure will form a driving force during the energy release process to achieve an opening and closing effect. Specifically, for example, when the energy storage structure completes the energy storage and reaches the critical point, there is an external force to break the balance at this time, and the energy storage structure will release energy, driving other components of operating mechanism 12 to perform closing or opening operations.

[0051] The electric mechanism 13 is accommodated in the first chamber 111. The electric mechanism 13 is located on one side of the operating mechanism 12. The electric mechanism 13 cooperates with the operating mechanism 12. Here, the electric mechanism 13 drives the energy storage structure in the operating mechanism 12 to store energy. The electric mechanism 13 cooperates with the operating mechanism 12 to form an electric operation structure, that is, an electric operation effect.

[0052] The manual mechanism 14 is accommodated in the first chamber 111. The manual mechanism 14 is located on the side of the operating mechanism 12 away from the electric mechanism 13, which is equivalent to the manual mechanism 14 and the electric mechanism 13 being arranged on both sides of the operating mechanism 12, that is, the operating mechanism 12 is located in the middle of the first chamber 111. The manual mechanism 14 cooperates with the operating mechanism 12, and the manual mechanism 14 drives the energy storage structure in the operating mechanism 12 to store energy.

[0053] The main circuit 15 is accommodated in the second chamber 112, and the operating mechanism 12 cooperates with the main circuit 15 to form the opening and closing operation of the molded case circuit breaker. With this structure, the layout is optimized, the overall structure is compact, the integration is high, the volume of the circuit breaker is reduced, and the electric mechanism 13 is directly arranged in the molded case circuit breaker, which is convenient for remote operation.

[0054] Specifically, as attached Figure 1-Figure 8 As shown, the operating mechanism 12 includes a main shaft 121, where the main shaft 121 is one of the components of the operating mechanism 12, and the main shaft 121 is specifically one of the components of the energy storage structure.

[0055] When the main shaft 121 rotates, the energy storage structure stores energy. The specific structure of the operating mechanism 12 here is the prior art, so it will not be described in detail in this embodiment. One end of the main shaft 121 cooperates with the electric mechanism 13, and the other end of the main shaft 121 cooperates with the manual mechanism 14. The main shaft 121 is respectively cooperated with the electric mechanism 13 and the manual mechanism 14. When the main shaft 121 rotates, the energy storage structure stores energy to provide energy for subsequent opening and closing operations. By releasing the stored energy of the energy storage structure, the output of the operating mechanism 12 is realized, and the output end of the operating mechanism 12 will cooperate with the main circuit 15 to form the opening and closing coordination effect. In addition, the electric mechanism 13 and the manual mechanism 14 can also cooperate with other components of the energy storage structure to form the effect of driving the entire operating mechanism 12 to move.

[0056] Specifically, as attached Figure 1-Figure 8 As shown, the electric mechanism 13 also includes a first ratchet 16 and a ratchet gear 17. The electric mechanism 13 includes a motor 131 and a gear set 132. The gear set 132 is provided with an output gear 133. The motor 131 is linked with the gear set 132, that is, the motor 131 works to make the gear set 132 move, and finally the output gear 133 rotates. The first ratchet 16 is sleeved on the main shaft 121 and is linked with the main shaft 121. The ratchet gear 17 is sleeved on the first ratchet 16. The ratchet gear 17 is linked with the first ratchet 16, and the ratchet gear 17 is meshed with the output gear 133. The motor 131 works to drive the output gear 133 to rotate, so that the ratchet gear 17 drives the main shaft 121 to rotate. The output gear 133 is meshed with the ratchet gear 17. The ratchet gear 17 cooperates with the main shaft 121 through the first ratchet 16 to achieve the rotation effect of the main shaft 121, forming the energy storage operation of the energy storage structure. Specifically, when the motor 131 is working, the gear set 132 is activated, and the output gear 133 is rotated. Since the output gear 133 is meshed with the ratchet gear 17 to achieve linkage between the two, the ratchet gear 17 drives the first ratchet 16 to move, and the first ratchet 16 drives the main shaft 121 to rotate. Finally, the main shaft 121 drives other components of the operating mechanism 12 to move, thereby realizing the opening or closing operation.

[0057] Specifically, as attached Figure 1-Figure 8 As shown, one of the first ratchet 16 and the main shaft 121 is provided with a first engaging portion 18, and the other of the first ratchet 16 and the main shaft 121 is provided with a first engaging groove 19 that cooperates with the first engaging portion 18. The first engaging portion 18 cooperates with the first engaging groove 19 to achieve a linkage effect between the first ratchet 16 and the main shaft 121, which is radial engagement here, and the radial direction specifically refers to the radial direction of the main shaft 121. One of the first ratchet 16 and the ratchet gear 17 is provided with a stepped protrusion 20, and the other of the first ratchet 16 and the ratchet gear 17 is provided with a stepped engaging groove 21 that cooperates with the stepped protrusion 20. The stepped protrusion 20 cooperates with the stepped engaging groove 21, and a linkage effect is also formed. Here, the step slot 21 and the step protrusion 20 are one-way linked. When the electric mechanism 13 moves, it will drive the main shaft 121 to rotate, forming energy storage in the energy storage structure. At this time, the step slot 21 and the step protrusion 20 are linked; on the contrary, when the manual mechanism 14 moves, it drives the main shaft 121 to rotate, and the step slot 21 and the step protrusion 20 do not cooperate. The two are in a clutch state, thereby forming a one-way linkage and reverse clutch, so that the electric mechanism 13 and the manual mechanism 14 will not interfere with each other.

[0058] Specifically, as attached Figure 1-Figure 8 As shown, the manual mechanism 14 includes a handle 141 and a rotating disk 142. The handle 141 and the rotating disk 142 are linked. The rotating disk 142 is provided with a concave cavity 1421 on the side facing the main shaft 121. The concave cavity 1421 contains a second ratchet 1422 and a pawl 1423. The rotating disk 142 drives the pawl 1423 to move. The pawl 1423 rotates relative to the concave cavity 1421. The pawl 1423 cooperates with the second ratchet 1422. The second ratchet 1422 is linked with the main shaft 121. The movement of the handle 141 drives the rotating disk 142 to rotate, so that the second ratchet 1422 drives the main shaft 121 to rotate. Pressing the handle 141 forms a rotation effect of the rotating disk 142. The pawl 1423 drives the main shaft 121 to rotate through the second ratchet 1422, forming an effect that the handle 141 drives the main shaft 121 to rotate. Here, the second ratchet 1422 is provided with a plurality of teeth distributed in a circumferential array. It should be noted that the pawl 1423 and the second ratchet 1422 are also one-way linked, that is, by pressing the handle 141, the pawl 1423 and the second ratchet 1422 are linked to realize the rotation of the main shaft 121. In the reset state, the teeth on the second ratchet 1422 will not drive the pawl 1423; moreover, when the electric mechanism 13 moves, it will drive the main shaft 121 to rotate, and the second ratchet 1422 will not drive the pawl 1423 to move, thus forming a one-way linkage and reverse clutch effect, so that the electric mechanism 13 and the manual mechanism 14 will not interfere with each other.

[0059] Specifically, as attached Figure 1-Figure 8As shown, the concave cavity 1421 accommodates a first restoring member 1424, one end of the first restoring member 1424 is connected to the inner wall of the concave cavity 1421, and the other end of the first restoring member 1424 is connected to the pawl 1423. The first restoring member 1424 gives the pawl 1423 a restoring effect, so that the pawl 1423 re-engages with the second ratchet 1422 after passing over a tooth of the second ratchet 1422.

[0060] Specifically, as attached Figure 1-Figure 8 As shown, one of the second ratchet 1422 and the main shaft 121 is provided with a second engaging portion 22, and the other of the second ratchet 1422 and the main shaft 121 is provided with a second engaging groove 23 that cooperates with the second engaging portion 22. The second engaging portion 22 and the second engaging groove 23 are also radially engaged, where the radial direction is the radial direction of the main shaft 121. In this embodiment, the first engaging groove 19 and the second engaging groove 23 have the same structure, both of which are V-shaped, and the first engaging portion 18 and the second engaging portion 22 are both a V-shaped protruding structure, thereby forming a radial engaging effect. In addition, those skilled in the art can also form a fixing method such as an axis.

[0061] Specifically, as attached Figure 1-Figure 8 As shown, it also includes a trip module 24, which is located on one side of the housing 11. The trip module 24 includes an electronic module 241 and a mechanical module 242. The electronic module 241 and the mechanical module 242 are plug-in connected; the trip module 24 is a thermal magnetic structure or an electronic structure; the trip module 24 cooperates with the main circuit 15. The switchable trip module 24 is provided for users to select, and the quick plug-in connection method improves the replacement efficiency. It should be noted here that the trip module 24 is connected to the first chamber 111 and the second chamber 112, so that the trip module 24 can control the main circuit 15 to perform the opening and closing operation. As the name implies, the electronic module 241 is provided with electronic components to form the control effect of the mechanical module 242, such as a coil or other control method. Since the service life of the electronic module 241 is lower than that of the mechanical structure, it can be replaced by quick plug-in. The mechanical module 242 is provided with a mechanical structure to form a tripping and opening effect.

[0062] Specifically, as attached Figure 9-11As shown, the operating mechanism 12 includes a lower connecting rod 122, which extends downward and extends to the second chamber 112. When the main shaft 121 rotates and the energy storage structure completes energy storage, the operating mechanism 12 is at a critical point. Once an external force breaks the balance, other components of the operating mechanism 12 will move, and eventually drive the lower connecting rod 122 to rotate. The lower connecting rod 122 cooperates with the moving contact assembly to form an opening and closing effect. The main circuit 15 includes a moving contact assembly 25, and the moving contact assembly 25 includes two cover plates 26. The cover plates 26 are arranged on both sides of the moving contact assembly 25. It should be noted here that one moving contact assembly 25 corresponds to one pole. The number of moving contact assemblies 25 here can be adjusted according to actual needs. In this embodiment, the number of moving contact assemblies 25 is described as three as an example, and the structure of each moving contact assembly 25 is consistent.

[0063] The second chamber 112 accommodates a transmission wheel 27, and the lower end of the lower connecting rod 122 is linked with the transmission wheel 27, one side of the transmission wheel 27 is linked with the cover plate 26, and the other side of the transmission wheel 27 is linked with the cover plate 26 of the adjacent moving contact assembly 25, that is, one transmission wheel 27 cooperates with one lower connecting rod 122 to form a linkage effect between two adjacent moving contact assemblies 25. When there are three moving contact assemblies 25, the number of transmission wheels 27 and lower connecting rods 122 are both two, and one transmission wheel 27 and one lower connecting rod 122 form a group. Similarly, when there are two moving contact assemblies 25, only one transmission wheel 27 and one lower connecting rod 122 are required. The lower connecting rod 122 of the operating mechanism 12 acts on the transmission wheel 27, and through the cooperation of the transmission wheel 27 and the cover plate 26, the transmission wheel 27 rotates to drive the moving contact assembly 25 to rotate, so as to realize the opening and closing action of the circuit breaker. Compared with the original metal shaft penetrating the transmission mode between the poles, the inter-pole electrical gap is increased, and the inter-pole leakage current is greatly reduced.

[0064] Specifically, as attached Figure 9-11 As shown, the lower connecting rod 122 also includes a pin 28, and the lower connecting rod 122 is provided with a through hole 1221. Here, the through hole 1221 is set at the lower end of the lower connecting rod 122, that is, the end away from the entire operating mechanism 12. The pin 28 passes through the through hole 1221 and is connected and fixed to the transmission wheel 27. The method of fixing with the pin 28 is simple and reliable. In addition, a rivet structure or a snap-on connection can also be used.

[0065] Specifically, as attached Figure 9-11 As shown, the transmission wheel 27 is provided with a fixing groove 271, and the fixing groove 271 is arranged inside the transmission wheel 27. In this embodiment, the fixing groove 271 is open upward, so that the lower connecting rod 122 extends to the fixing groove 271, forming a positioning and fixing effect of the lower connecting rod 122, and then the connection and fixation between the transmission wheel 27 and the lower connecting rod 122 are realized by the pin shaft 28, thereby improving the fixing strength.

[0066] Specifically, as attached Figure 9-11As shown, a reinforcing rib 272 is provided in the transmission wheel 27, and the reinforcing rib 272 is provided on one side of the fixing groove 271, and the pin 28 passes through the reinforcing rib 272. The provision of the reinforcing rib 272 further improves the strength of the transmission wheel 27.

[0067] Specifically, the imaginary central axis of the pin 28 is not arranged in a colinear manner with the imaginary central axis of the transmission wheel 27. The eccentric arrangement of the pin 28 reduces the driving force and makes the driving easier. In this embodiment, the center distance between the pin 28 and the transmission wheel 27 can be adjusted according to actual needs, so as to ensure the matching strength between the pin 28 and the transmission wheel 27, prevent the risk of breakage under the rotation force, and make the rotation easier.

[0068] Specifically, as attached Figure 9-11 As shown, the operating mechanism 12 further includes a linkage shaft 123, and the number of the lower connecting rods 122 is two or more, and the linkage shaft 123 passes through the lower connecting rods 122 to form a linkage effect between the lower connecting rods 122. A linkage effect is formed between two lower connecting rods 122 or multiple lower connecting rods 122, forming synchronization and consistency. In this embodiment, the number of the lower connecting rods 122 is taken as two, and the linkage shaft 123 cooperates with the two lower connecting rods 122 to form an inverted U-shaped structure.

[0069] Specifically, as attached Figure 9-11 As shown, one of the transmission wheel 27 and the cover plate 26 is provided with a first protrusion 29, and the other of the transmission wheel 27 and the cover plate 26 is provided with a first through hole 30 that cooperates with the first protrusion 29. The first protrusion 29 cooperates with the first through hole 30 to form a linkage effect between the transmission wheel 27 and the cover plate 26. The number of the first protrusions 29 here can be adjusted according to actual needs. When the number of the first protrusions 29 is two or more, the first protrusions 29 can be distributed in a circular array. In this embodiment, four first protrusions 29 are described as an example, and the four first protrusions 29 are distributed in a circular array. In this embodiment, four first protrusions 29 are provided on the side of the cover plate 26 facing the transmission wheel 27, and four corresponding first through holes 30 are provided on the side of the transmission wheel 27 facing the cover plate 26. The first protrusion 29 is cylindrical. The two side surfaces of the transmission wheel 27 are symmetrically arranged, that is, the structures of the two side surfaces are consistent.

[0070] Specifically, as attached Figure 9-11As shown, the dynamic contact assembly 25 includes a dynamic contact body 251, and one of the dynamic contact body 251 and the cover plate 26 is provided with a second protrusion 31, and the other of the dynamic contact body 251 and the cover plate 26 is provided with a second through hole 32 that cooperates with the second protrusion 31. The second protrusion 31 cooperates with the second through hole 32 to form a linkage effect between the dynamic contact body 251 and the cover plate 26. The number of the second protrusions 31 here can be adjusted according to actual needs. When the number of the second protrusions 31 is two or more, the second protrusions 31 can be distributed in a circular array. In this embodiment, the cover plate 26 is provided with two second protrusions 31 on the side facing the dynamic contact body 251, and the two second protrusions 31 are distributed in a circular array, and the dynamic contact body 251 is provided with two second through holes 32. The second protrusion 31 is square or irregular in shape.

[0071] Specifically, as attached Figure 9-11 As shown, the moving contact body 251 is fixed with two moving contacts 252, and the two moving contacts 252 face in opposite directions. In addition, the moving contact body 251 is also provided with an energy storage component for applying contact pressure to increase the contact pressure of the moving contact 252.

[0072] Specifically, it also includes a closing button 33, an opening button 34, a closing and opening indicator 35, and an energy storage indicator 36. When the energy storage structure completes energy storage, the closing button 33 is pressed, and the closing button 33 will break the balance, the energy storage structure quickly releases energy, and the remaining components of the operating mechanism 12 will be activated, and the closing effect is finally achieved. Press the opening button 34, and the opening button 34 will break the balance, the energy storage structure quickly releases energy, and the remaining components of the operating mechanism 12 will be activated, and the opening operation is finally achieved. Here, the closing button 33 and the opening button 34 can be mechanically driven, or a combination of electrical signals and mechanics (pressing generates a signal to control the internal drive motor or coil to achieve the closing and opening operation). When the molded case circuit breaker performs an opening or closing operation, the closing and opening indicator 35 will make an indication. When the energy storage structure completes energy storage, the energy storage indicator 36 performs energy storage indication. The control mechanism can receive an external command signal to form an opening and closing control effect.

[0073] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A molded case circuit breaker with an electric operating structure, characterized in that: include: A shell (11), wherein the shell (11) is provided with a first chamber (111) and a second chamber (112), wherein the first chamber (111) is located above the second chamber (112); an operating mechanism (12), the operating mechanism (12) being accommodated in the first chamber (111); an electric mechanism (13), the electric mechanism (13) being accommodated in the first chamber (111), the electric mechanism (13) being located on one side of the operating mechanism (12), and the electric mechanism (13) being matched with the operating mechanism (12); a manual mechanism (14), the manual mechanism (14) being accommodated in the first chamber (111), the manual mechanism (14) being located on a side of the operating mechanism (12) away from the electric mechanism (13), and the manual mechanism (14) cooperating with the operating mechanism (12); A main circuit (15), the main circuit (15) is accommodated in the second chamber (112), and the operating mechanism (12) cooperates with the main circuit (15) to form the opening and closing operations of the molded case circuit breaker.

2. The molded case circuit breaker with an electric operating structure according to claim 1, characterized in that: The operating mechanism (12) comprises a main shaft (121), one end of the main shaft (121) cooperates with the electric mechanism (13), and the other end of the main shaft (121) cooperates with the manual mechanism (14).

3. The molded case circuit breaker with an electric operating structure according to claim 2, characterized in that: The invention also comprises a first ratchet wheel (16) and a ratchet gear (17); the electric mechanism (13) comprises a motor (131) and a gear set (132); the gear set (132) is provided with an output gear (133); the motor (131) and the gear set (132) are linked; the first ratchet wheel (16) is sleeved on the main shaft (121) and is linked with the main shaft (121); the ratchet gear (17) is sleeved on the first ratchet wheel (16); the ratchet gear (17) and the first ratchet wheel (16) are linked; the ratchet gear (17) and the output gear (133) are meshed; the motor (131) works to drive the output gear (133) to rotate, so that the ratchet gear (17) drives the main shaft (121) to rotate.

4. The molded case circuit breaker with electric operation structure according to claim 3, characterized in that: One of the first ratchet wheel (16) and the main shaft (121) is provided with a first engaging portion (18), and the other of the first ratchet wheel (16) and the main shaft (121) is provided with a first engaging groove (19) matched with the first engaging portion (18); one of the first ratchet wheel (16) and the ratchet gear (17) is provided with a stepped protrusion (20), and the other of the first ratchet wheel (16) and the ratchet gear (17) is provided with a stepped engaging groove (21) matched with the stepped protrusion (20).

5. The molded case circuit breaker with electric operation structure according to claim 2, characterized in that: The manual mechanism (14) comprises a handle (141) and a rotating disk (142); the handle (141) and the rotating disk (142) are linked together; a concave cavity (1421) is provided on the rotating disk (142) facing the main shaft (121); the concave cavity (1421) accommodates a second ratchet (1422) and a pawl (1423); the rotating disk (142) drives the pawl (1423) to move; the pawl (1423) rotates relative to the concave cavity (1421); the pawl (1423) cooperates with the second ratchet (1422); the second ratchet (1422) and the main shaft (121) are linked together; the movement of the handle (141) drives the rotating disk (142) to rotate, so that the second ratchet (1422) drives the main shaft (121) to rotate.

6. The molded case circuit breaker with electric operation structure according to claim 5, characterized in that: The concave cavity (1421) accommodates a first restoring member (1424), one end of the first restoring member (1424) is connected to the inner wall of the concave cavity (1421), and the other end of the first restoring member (1424) is connected to the pawl (1423).

7. The molded case circuit breaker with an electric operating structure according to claim 5, characterized in that: One of the second ratchet (1422) and the main shaft (121) is provided with a second engaging portion (22), and the other of the second ratchet (1422) and the main shaft (121) is provided with a second engaging groove (23) matched with the second engaging portion (22).

8. The molded case circuit breaker with an electric operating structure according to claim 1, characterized in that: The invention also comprises a trip module (24), the trip module (24) being located on one side of the housing (11), the trip module (24) comprising an electronic module (241) and a mechanical module (242), the electronic module (241) and the mechanical module (242) being connected in a plug-in manner; the trip module (24) is a thermal magnetic structure or an electronic structure; the trip module (24) cooperates with the main circuit (15).

9. The molded case circuit breaker with an electric operating structure according to claim 1, characterized in that: The operating mechanism (12) includes a lower connecting rod (122); the main body circuit (15) includes a movable contact assembly (25), and the movable contact assembly (25) includes two cover plates (26), and the cover plates (26) are arranged on both sides of the movable contact assembly (25); the second chamber (112) accommodates a transmission wheel (27), the lower end of the lower connecting rod (122) is linked to the transmission wheel (27), one side of the transmission wheel (27) is linked to the cover plate (26), and the other side of the transmission wheel (27) is linked to the cover plate (26) of the adjacent movable contact assembly (25).

10. The molded case circuit breaker with an electric operating structure according to claim 1, characterized in that: It also includes a pin shaft (28), the lower connecting rod (122) is provided with a through hole (1221), and the pin shaft (28) passes through the through hole (1221) and is fixedly matched with the transmission wheel (27).

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