A circuit breaker

Abstract

The application belongs to the technical field of circuit breakers, and particularly discloses a circuit breaker. The circuit breaker is characterized in that an upper shell, an intermediate shell and a lower shell are sequentially arranged along the height direction, an operating mechanism is installed in a first installation cavity formed by the upper shell and the intermediate shell, and a main circuit mechanism is installed in a second installation cavity arranged in the lower shell. Compared with the prior art, the circuit breaker can integrate the operating mechanism and the main circuit mechanism in the shell, so that the installation size of the circuit breaker is reduced, and the utilization rate of the internal space of the circuit breaker is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker, in particular to a circuit breaker. BACKGROUND

[0002] The circuit breaker is an important switching device in the power mechanism, which can realize the functions of power-off, power supply and circuit conversion by closing or opening the circuit supplying power when the electrical appliance is working normally. When the electrical appliance appears abnormal such as overload and short circuit, the circuit breaker will trip to cut off the electrical circuit to avoid endangering the safety of workers and the normal operation of equipment. At present, the circuit breaker has been widely used in power system.

[0003] The existing method of adding functions to the circuit breaker is to add additional modules on the basis of the shell. For example, when adding remote control function to the circuit breaker, the electric operating mechanism needs to be installed above the circuit breaker. When adding monitoring and display function to the circuit breaker, the ammeter module and current transformer module need to be installed below the circuit breaker.

[0004] However, when adding functions in this way, the components are simply stacked outside the circuit breaker, which increases the space occupied by the plastic shell circuit breaker and its surrounding components in daily life, that is, a larger installation size is required during installation. At the same time, the space inside the circuit breaker is not used reasonably, resulting in low integration of the circuit breaker and failing to meet the requirements of high-density power distribution. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is that in the prior art, when the existing circuit breaker wants to add functions, the components are simply stacked, which requires a larger installation size during installation and the space inside the circuit breaker is not used reasonably, resulting in low integration of the circuit breaker.

[0006] To this end, the present application provides a circuit breaker, which comprises:

[0007] A shell mechanism comprising an upper shell, an intermediate shell and a lower shell connected in sequence along the height direction, the upper shell and the intermediate shell enclosing a first installation cavity, and the lower shell being provided with a second installation cavity inside;

[0008] An operating mechanism arranged in the first installation cavity;

[0009] A main circuit mechanism arranged in the second installation cavity.

[0010] Optionally, the circuit breaker described above,

[0011] The operating mechanism comprises an electric drive assembly and an energy storage assembly;

[0012] The electric transmission assembly comprises a motor, a first transmission gear and a driving shaft, a driving end of the motor directly or indirectly drives the first transmission gear to rotate, the first transmission gear is coaxially arranged with the driving shaft and the first transmission gear is installed on the driving shaft;

[0013] The energy storage assembly comprises an energy storage rotating disc, an energy storage connecting rod, an energy storage rolling shaft sleeve, a fixed shaft and an energy storage biasing member, the energy storage rotating disc is installed on the driving shaft, the energy storage connecting rod has a first connecting part, a second connecting part and a third connecting part, the first connecting part is arranged between the second connecting part and the third connecting part, the third connecting part is located on a side of the first connecting part close to the energy storage rotating disc, the energy storage rolling shaft sleeve is rotatably installed on the third connecting part, and the fixed shaft is connected with the first connecting part.

[0014] Optionally, the circuit breaker,

[0015] The energy storage assembly further comprises an energy storage lock catch sleeve, an energy storage lock catch member and an energy storage lock catch limiting shaft, the energy storage lock catch sleeve is integrally formed with the energy storage rotating disc, the energy storage lock catch member and the energy storage lock catch limiting shaft are located on a side of the energy storage lock catch sleeve away from the energy storage biasing member, and the energy storage lock catch member is arranged between the energy storage lock catch limiting shaft and the energy storage lock catch sleeve, the energy storage lock catch member has a clamping part and a first abutting part, the clamping part is arranged close to the energy storage lock catch sleeve, and the first abutting part is arranged away from the energy storage lock catch sleeve.

[0016] Optionally, the circuit breaker,

[0017] The operating mechanism further comprises a lock catch assembly, and the lock catch assembly comprises:

[0018] A jump catch member is rotatably installed on the driving shaft, the jump catch member is provided with a fourth connecting part and a second abutting part;

[0019] A jump catch biasing member is installed on the driving shaft;

[0020] A first connecting rod has one end connected with the fourth connecting part;

[0021] A second connecting rod has one end connected with the other end of the first connecting rod;

[0022] A third connecting rod is provided with a fifth connecting part and a sixth connecting part, the fifth connecting part serves as a rotating part, the sixth connecting part is located on a side of the fifth connecting part away from the driving shaft, and the sixth connecting part is connected with the other end of the second connecting rod;

[0023] A lock catch main shaft is arranged in a spaced manner with the driving shaft;

[0024] A lock catch is rotatably mounted on the lock catch main shaft, and the lock catch is located on the side of the second abutting portion away from the main shaft. The lock catch is provided with a third abutting portion and a seventh connecting portion. The third abutting portion is arranged on the side close to the second abutting portion. The seventh connecting portion is located on the side of the lock catch main shaft away from the third connecting rod.

[0025] A lock catch biasing member is fixed at one end and fixedly connected to the seventh connecting portion at the other end.

[0026] Optionally, the circuit breaker described above,

[0027] The lock catch assembly further comprises a fixed lock catch limiting shaft, which is located between the lock catch main shaft and the third connecting rod.

[0028] The lock catch further has a fourth abutting portion, which is located on the side of the lock catch main shaft close to the third connecting rod.

[0029] Optionally, the circuit breaker described above,

[0030] The upper shell comprises a display shell and a base. The display shell is located on the side of the intermediate shell away from the lower shell. The base is located between the display shell and the intermediate shell.

[0031] The operating mechanism further comprises a manual transmission assembly. The manual transmission assembly is mounted on the display shell. The manual transmission assembly comprises an operating handle, an energy release button, an opening button, a first display frame, and a second display frame.

[0032] Optionally, the circuit breaker described above,

[0033] The operating mechanism further comprises other components. The other components comprise an energy release tripping member. The energy release tripping member is fixedly mounted on the energy storage lock catch limiting shaft. The energy release tripping member is provided with a fifth abutting portion. The fifth abutting portion is adapted to rotate under the action of an external force.

[0034] The energy release button is provided with a sixth abutting portion. When the energy release button is pressed by an external force, the sixth abutting portion moves on the side close to the fifth abutting portion until it abuts against the fifth abutting portion.

[0035] Optionally, the circuit breaker described above,

[0036] The other components further comprise:

[0037] A lower connecting rod shaft is located on the side of the fixed lock catch limiting shaft away from the lock catch main shaft.

[0038] A split reset biasing member, one end of the split reset biasing member is connected with the lock catch main shaft, and the other end of the split reset biasing member is connected with the fixed lock catch limiting shaft;

[0039] A fourth connecting rod, one end of the fourth connecting rod is installed on the lower connecting rod shaft;

[0040] A stationary contact, located below the third connecting rod;

[0041] A movable contact, fixedly installed on the other end of the fourth connecting rod, and adapted to approach or move away from the stationary contact under the driving of the fourth connecting rod.

[0042] Optionally, the circuit breaker,

[0043] The other components further include a first display member, the first display member is provided with an eighth connecting part and a display part, the display part is arranged close to the first display frame, the eighth connecting part is in an arc shape, one end of the eighth connecting part is rotatably connected with the fixed shaft, and the other end of the eighth connecting part is connected with the display part.

[0044] Optionally, the circuit breaker,

[0045] The operating mechanism further includes a first tripping assembly, the first tripping assembly is arranged close to the energy releasing tripping member, the first tripping assembly includes a first tripping member, and the first tripping member is driven to rotate the fifth abutting part under the action of an electromagnetic field.

[0046] Optionally, the circuit breaker,

[0047] The lock catch assembly further includes a lock catch limiting member, and the lock catch limiting member is installed on the fixed lock catch limiting shaft.

[0048] The split button is provided with a seventh abutting part, the seventh abutting part is arranged close to one side of the fixed lock catch limiting shaft, under the action of an external force, when the external force presses down the split button, the seventh abutting part moves close to one side of the lock catch limiting member until the seventh abutting part abuts against the lock catch limiting member.

[0049] Optionally, the circuit breaker,

[0050] The operating mechanism further includes a second tripping assembly, the second tripping assembly is arranged close to the fixed lock catch limiting shaft, the second tripping assembly is provided with a second tripping member, and the second tripping member is adapted to receive a rotating signal of a circuit board to rotate.

[0051] The technical scheme provided by the present application has the following advantages:

[0052] The circuit breaker provided by the application comprises a shell mechanism, an operating mechanism and a main circuit mechanism. The shell mechanism comprises an upper shell, an intermediate shell and a lower shell connected in sequence along the height direction, the upper shell and the intermediate shell enclose a first mounting cavity, and the lower shell is internally provided with a second mounting cavity; the operating mechanism is arranged in the first mounting cavity; and the main circuit mechanism is arranged in the second mounting cavity.

[0053] The circuit breaker with the structure can arrange the operating mechanism and the main circuit mechanism in the shell, realize the integration of the operating mechanism, the shell mechanism and the main circuit mechanism, reduce the overall installation size of the functional components and the circuit breaker during installation, and improve the utilization rate of the internal space of the circuit breaker. BRIEF DESCRIPTION OF DRAWINGS

[0054] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0055] Figure 1 The isometric view of the circuit breaker provided in the embodiments of the application;

[0056] Figure 2 The front view of the circuit breaker provided in the embodiments of the application;

[0057] Figure 3 The top view of the circuit breaker provided in the embodiments of the application;

[0058] Figure 4 The structural schematic view of the operating mechanism and the main circuit mechanism of the circuit breaker provided in the embodiments of the application;

[0059] Figure 5 The structural schematic view of the electric transmission assembly in the circuit breaker provided in the embodiments of the application;

[0060] Figure 6 The structural schematic view of the operating mechanism in the circuit breaker provided in the embodiments of the application;

[0061] Figure 7 The structural schematic view of the operating mechanism in the circuit breaker provided in the embodiments of the application;

[0062] Figure 8 Structure diagram of the energy storage component in the circuit breaker provided in the embodiment of the present application in the energy releasing state;

[0063] Figure 9 Structure diagram of the energy storage component in the circuit breaker provided in the embodiment of the present application in the energy storage state;

[0064] Figure 10 Structure diagram of the partial component in the energy storage component in the circuit breaker provided in the embodiment of the present application;

[0065] Figure 11 Structure diagram of the energy storage lock catch limiting shaft in the circuit breaker provided in the embodiment of the present application;

[0066] Figure 12 Structure diagram of the lock catch component in the circuit breaker provided in the embodiment of the present application;

[0067] Figure 13 Structure diagram of the partial component in the lock catch component in the circuit breaker provided in the embodiment of the present application;

[0068] Figure 14 Structure diagram of the moving contact and the stationary contact in the circuit breaker provided in the embodiment of the present application in the open state;

[0069] Figure 15 Structure diagram of the moving contact and the stationary contact in the circuit breaker provided in the embodiment of the present application in the closed state;

[0070] Figure 16 Structure diagram of the energy releasing button in the circuit breaker provided in the embodiment of the present application acting on the energy releasing release;

[0071] Figure 17 Structure diagram of the first release in the circuit breaker provided in the embodiment of the present application acting on the energy releasing release;

[0072] Figure 18 Structure diagram of the open button in the circuit breaker provided in the embodiment of the present application acting on the second release;

[0073] Explanation of reference numerals:

[0074] 1 - housing mechanism; 11 - upper housing; 111 - display housing; 112 - base; 12 - intermediate housing; 13 - lower housing;

[0075] 2 - operating mechanism; 21 - electric transmission assembly; 211 - motor; 212 - first transmission gear; 213 - driving shaft; 22 - energy storage assembly; 221 - energy storage turntable; 222 - energy storage connecting rod; 2221 - first connecting part; 2222 - second connecting part; 2223 - third connecting part; 223 - energy storage rolling shaft sleeve; 224 - fixed shaft; 225 - energy storage biasing member; 226 - energy storage lock catch shaft sleeve; 227 - energy storage lock catch member; 2271 - clamping part; 2272 - first abutting part; 228 - energy storage lock catch limiting shaft; 23 - lock catch assembly; 231 - jump catch member; 2311 - fourth connecting part; 2312 - second abutting part; 232 - jump catch biasing member; 233 - first connecting rod; 234 - second connecting rod; 235 - third connecting rod; 2351 - fifth connecting part; 2352 - sixth connecting part; 236 - lock catch main shaft; 237 - lock catch member; 2371 - third abutting part; 2372 - seventh connecting part; 2373 - fourth abutting part; 238 - lock catch biasing member; 239 - fixed lock catch limiting shaft; 240 - lock catch limiting member; 24 - manual transmission assembly; 241 - operating handle; 242 - energy release button; 2421 - sixth abutting part; 243 - disconnecting button; 2431 - seventh abutting part; 244 - first display frame; 245 - second display frame; 25 - other assembly; 251 - energy release tripping member; 2511 - fifth abutting part; 252 - lower connecting rod shaft; 253 - disconnecting reset biasing member; 254 - fourth connecting rod; 255 - stationary contact; 256 - movable contact; 257 - first display member; 2571 - eighth connecting part; 2572 - display part; 258 - energy release limiting shaft; 259 - second display member; 26 - first tripping assembly; 261 - first tripping member; 27 - second tripping assembly; 271 - second tripping member;

[0076] 3 - main circuit mechanism; 31 - wiring terminal; 32 - current transformer. DETAILED DESCRIPTION

[0077] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0078] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0079] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0080] Furthermore, 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.

[0081] Example 1

[0082] This embodiment provides a circuit breaker, such as Figures 1 to 18 As shown, it includes a housing mechanism 1 and an operating mechanism 2. The housing mechanism 1 includes an upper housing 11, an intermediate housing 12, and a lower housing 13 connected sequentially along the height direction. The upper housing 11 and the intermediate housing 12 enclose a first mounting cavity, and the lower housing 13 has a second mounting cavity inside. The operating mechanism 2 is disposed in the first mounting cavity, and the main circuit mechanism 3 is disposed in the second mounting cavity.

[0083] It can be noted that, in this embodiment, the main circuit mechanism 3 may include a terminal block 31, a current transformer 32, an arc extinguishing system (not shown in the figure), and a contact system (not shown in the figure).

[0084] The circuit breaker of the structure, by sequentially arranging the upper shell 11, the middle shell 12 and the lower shell 13 along the height direction, installing the operating mechanism 2 in the first installation cavity enclosed by the upper shell 11 and the middle shell 12, and installing the main circuit mechanism 3 in the second installation cavity arranged in the lower shell 13, compared with the prior art scheme of only installing each functional component outside the circuit breaker for stacking when adding functions, the circuit breaker of the structure can arrange the operating mechanism 2 and the main circuit mechanism 3 inside the shell, realize the integration of the operating mechanism 2, the shell mechanism 1 and the main circuit mechanism 3, reduce the overall installation size of each functional component and the circuit breaker during installation, and improve the utilization rate of the internal space of the circuit breaker.

[0085] As shown in Figures 4 to 10 , the circuit breaker provided by the embodiment includes the operating mechanism 2, the main circuit mechanism 3 and other components 25. The operating mechanism 2 includes the electric transmission assembly 21 and the energy storage assembly 22. The electric transmission assembly 21 includes the motor 211, the first transmission gear 212 and the driving shaft 213. The driving end of the motor 211 directly or indirectly drives the first transmission gear 212 to rotate. The first transmission gear 212 is coaxially arranged with the driving shaft 213 and is installed on the driving shaft 213. The energy storage assembly 22 includes the energy storage turntable 221, the energy storage connecting rod 222, the energy storage rolling shaft sleeve 223, the fixed shaft 224 and the energy storage biasing member 225. The energy storage turntable 221 is installed on the driving shaft 213. The energy storage connecting rod 222 has the first connecting part 2221, the second connecting part 2222 and the third connecting part 2223. The first connecting part 2221 is arranged between the second connecting part 2222 and the third connecting part 2223. The third connecting part 2223 is located on the side of the first connecting part 2221 close to the energy storage turntable 221. The energy storage rolling shaft sleeve 223 is rotatably installed on the third connecting part 2223. The fixed shaft 224 is connected with the first connecting part 2221.

[0086] As shown in Figure 3 , Figure 4 , Figure 6 and Figure 16 , the circuit breaker provided by the embodiment includes the operating mechanism 2, the main circuit mechanism 3 and other components 25. The operating mechanism 2 includes the electric transmission assembly 21 and the energy storage assembly 22. The electric transmission assembly 21 includes the motor 211, the first transmission gear 212 and the driving shaft 213. The driving end of the motor 211 directly or indirectly drives the first transmission gear 212 to rotate. The first transmission gear 212 is coaxially arranged with the driving shaft 213 and is installed on the driving shaft 213. The energy storage assembly 22 includes the energy storage turntable 221, the energy storage connecting rod 222, the energy storage rolling shaft sleeve 223, the fixed shaft 224 and the energy storage biasing member 225. The energy storage turntable 221 is installed on the driving shaft 213. The energy storage connecting rod 222 has the first connecting part 2221, the second connecting part 2222 and the third connecting part 2223. The first connecting part 2221 is arranged between the second connecting part 2222 and the third connecting part 2223. The third connecting part 2223 is located on the side of the first connecting part 2221 close to the energy storage turntable 221. The energy storage rolling shaft sleeve 223 is rotatably installed on the third connecting part 2223. The fixed shaft 224 is connected with the first connecting part 2221.

[0087] It can be explained that, in the embodiment, if it is needed to remotely control the circuit breaker to complete energy storage, at this time, it is only needed to drive the first transmission gear 212 to rotate through the driving end of the motor 211 directly or indirectly as shown in Figure 5 , at this time, the driving shaft 213 will rotate under the driving of the first transmission gear 212.

[0088] Further, in the embodiment, if manual operation of the circuit breaker is needed to complete energy storage, the operating handle 241 is pressed, so that the driving end of the operating handle 241 directly acts on the driving shaft 213, and manual pressing of the operating handle 241 drives the driving end of the operating handle to rotate the driving shaft 213.

[0089] As shown in Figure 4 , Figures 6 to 11 , the circuit breaker provided in the embodiment further comprises an energy storage locking shaft sleeve 226, an energy storage locking piece 227, and an energy storage locking limiting shaft 228. The energy storage locking shaft sleeve 226 is integrally formed with the energy storage rotating disc 221. The energy storage locking piece 227 and the energy storage locking limiting shaft 228 are both located on the side of the energy storage locking shaft sleeve 226 away from the energy storage biasing piece 225, and the energy storage locking piece 227 is arranged between the energy storage locking limiting shaft 228 and the energy storage locking shaft sleeve 226. The energy storage locking piece 227 has a clamping portion 2271 and a first abutting portion 2272. The clamping portion 2271 is arranged close to the energy storage locking shaft sleeve 226, and the first abutting portion 2272 is arranged away from the energy storage locking shaft sleeve 226.

[0090] It can be explained that, in the embodiment, as shown in Figures 4 to 11 , when the energy storage locking piece 227 is clamped in the B area, it is in the limiting state; and when the energy storage locking piece 227 is clamped in the A area, it is in the state of releasing the limiting.

[0091] As shown in Figure 4 , Figure 6 , Figure 7 , Figure 12 and Figure 13As shown, the circuit breaker provided by the embodiment further comprises a locking assembly 23, the locking assembly 23 comprising a locking piece 231, a locking biasing piece 232, a first connecting rod 233, a second connecting rod 234, a third connecting rod 235, a locking main shaft 236, a locking piece 237 and a locking biasing piece 238. The locking piece 231 is rotatably installed on the driving shaft 213, and the locking piece 231 is provided with a fourth connecting part 2311 and a second abutting part 2312. The locking biasing piece 232 is installed on the driving shaft 213. One end of the first connecting rod 233 is connected with the fourth connecting part 2311. One end of the second connecting rod 234 is connected with the other end of the first connecting rod 233. The third connecting rod 235 is provided with a fifth connecting part 2351 and a sixth connecting part 2352. The fifth connecting part 2351 serves as a rotating part. The sixth connecting part 2352 is located on the side of the fifth connecting part 2351 away from the driving shaft 213, and the sixth connecting part 2352 is connected with the other end of the second connecting rod 234. The locking main shaft 236 is arranged in a spaced manner with the driving shaft 213. The locking piece 237 is rotatably installed on the locking main shaft 236, and the locking piece 231 is located on the side of the second abutting part 2312 away from the driving shaft 213. The locking piece 237 is provided with a third abutting part 2371 and a seventh connecting part 2372. The third abutting part 2371 is arranged on the side close to the second abutting part 2312. The seventh connecting part 2372 is located on the side of the locking main shaft 236 away from the third connecting rod 235. One end of the locking biasing piece 238 is fixed, and the other end is fixedly connected with the seventh connecting part 2372.

[0092] As shown in Figure 4 , Figure 6 , Figure 7 and Figure 12 , the circuit breaker provided by the embodiment further comprises a locking assembly 23, the locking assembly 23 comprising a locking piece 231, a locking biasing piece 232, a first connecting rod 233, a second connecting rod 234, a third connecting rod 235, a locking main shaft 236, a locking piece 237 and a locking biasing piece 238. The locking piece 231 is rotatably installed on the driving shaft 213, and the locking piece 231 is provided with a fourth connecting part 2311 and a second abutting part 2312. The locking biasing piece 232 is installed on the driving shaft 213. One end of the first connecting rod 233 is connected with the fourth connecting part 2311. One end of the second connecting rod 234 is connected with the other end of the first connecting rod 233. The third connecting rod 235 is provided with a fifth connecting part 2351 and a sixth connecting part 2352. The fifth connecting part 2351 serves as a rotating part. The sixth connecting part 2352 is located on the side of the fifth connecting part 2351 away from the driving shaft 213, and the sixth connecting part 2352 is connected with the other end of the second connecting rod 234. The locking main shaft 236 is arranged in a spaced manner with the driving shaft 213. The locking piece 237 is rotatably installed on the locking main shaft 236, and the locking piece 231 is located on the side of the second abutting part 2312 away from the driving shaft 213. The locking piece 237 is provided with a third abutting part 2371 and a seventh connecting part 2372. The third abutting part 2371 is arranged on the side close to the second abutting part 2312. The seventh connecting part 2372 is located on the side of the locking main shaft 236 away from the third connecting rod 235. One end of the locking biasing piece 238 is fixed, and the other end is fixedly connected with the seventh connecting part 2372.

[0093] As shown in Figures 2 to 4 , the circuit breaker provided by the embodiment further comprises a locking assembly 23, the locking assembly 23 comprising a locking piece 231, a locking biasing piece 232, a first connecting rod 233, a second connecting rod 234, a third connecting rod 235, a locking main shaft 236, a locking piece 237 and a locking biasing piece 238. The locking piece 231 is rotatably installed on the driving shaft 213, and the locking piece 231 is provided with a fourth connecting part 2311 and a second abutting part 2312. The locking biasing piece 232 is installed on the driving shaft 213. One end of the first connecting rod 233 is connected with the fourth connecting part 2311. One end of the second connecting rod 234 is connected with the other end of the first connecting rod 233. The third connecting rod 235 is provided with a fifth connecting part 2351 and a sixth connecting part 2352. The fifth connecting part 2351 serves as a rotating part. The sixth connecting part 2352 is located on the side of the fifth connecting part 2351 away from the driving shaft 213, and the sixth connecting part 2352 is connected with the other end of the second connecting rod 234. The locking main shaft 236 is arranged in a spaced manner with the driving shaft 213. The locking piece 237 is rotatably installed on the locking main shaft 236, and the locking piece 231 is located on the side of the second abutting part 2312 away from the driving shaft 213. The locking piece 237 is provided with a third abutting part 2371 and a seventh connecting part 2372. The third abutting part 2371 is arranged on the side close to the second abutting part 2312. The seventh connecting part 2372 is located on the side of the locking main shaft 236 away from the third connecting rod 235. One end of the locking biasing piece 238 is fixed, and the other end is fixedly connected with the seventh connecting part 2372.

[0094] It can be explained that the circuit breaker provided by the embodiment further comprises a circuit board, and the circuit board is installed inside the upper shell 11 and arranged at the joint of the display shell 111 and the base 112. At this time, the circuit board can be provided with an under-voltage module, an overload module and a communication module, so as to realize the under-voltage, overload and communication functions of the circuit breaker. In addition, the circuit breaker provided by the embodiment further comprises electronic components such as a transformer and a switching power supply, and the electronic components are arranged between the middle shell 12 and the base 112.

[0095] As shown in Figure 4 and Figure 16 , the operating mechanism 2 of the circuit breaker provided by the embodiment further comprises other components 25, and the other components 25 comprise an energy release release 251, the energy release release 251 is fixedly installed on the energy storage lock limiting shaft 228, and the energy release release 251 is provided with a fifth abutting portion 2511, the fifth abutting portion 2511 is adapted to rotate under the action of an external force; the energy release button 242 is provided with a sixth abutting portion 2421, when the external force presses down the energy release button 242, the sixth abutting portion 2421 moves close to the side of the fifth abutting portion 2511 until abuts against the fifth abutting portion 2511.

[0096] As shown in Figure 4 , Figure 6 , Figure 14 and Figure 15 , the other components 25 of the circuit breaker provided by the embodiment further comprise a lower connecting rod shaft 252, a tripping reset biasing member 253, a fourth connecting rod 254, a static contact 255 and a dynamic contact 256. Among them, the lower connecting rod shaft 252 is located on the side of the fixed lock limiting shaft 239 away from the lock main shaft 236; one end of the tripping reset biasing member 253 is connected with the lock main shaft 236, and the other end of the tripping reset biasing member 253 is connected with the fixed lock limiting shaft 239; one end of the fourth connecting rod 254 is installed on the lower connecting rod shaft 252; the static contact 255 is located below the third connecting rod 235; the dynamic contact 256 is fixedly installed on the other end of the fourth connecting rod 254, and is adapted to approach or move away from the static contact 255 under the driving of the fourth connecting rod 254.

[0097] The circuit breaker of the structure, when the release button 242 is pressed, the sixth abutting portion 2421 moves close to the side of the fifth abutting portion 2511 and abuts against the fifth abutting portion 2511, and then the fifth abutting portion 2511 rotates clockwise, realizing the clockwise rotation of the release release 251. At this time, since the release release 251 is fixedly installed on the energy storage lock limiting shaft 228, the energy storage lock limiting shaft 228 rotates clockwise, at this time, the energy storage lock limiting shaft 228 releases the limiting of the energy storage lock 227 while rotating, and makes the energy storage biasing member 225 reset, at this time, the energy storage connecting rod 222 drives the driving shaft 213 to rotate, the driving shaft 213 drives the jump release 231 to rotate, and drives the third connecting rod 235 to move through the action of the first connecting rod 233 and the second connecting rod 234, at this time, the third connecting rod 235 drives the fourth connecting rod 254 to move, the fourth connecting rod 254 drives the moving contact 256 to rotate in the process of moving, until the moving contact 256 abuts against the static contact 255, realizing the closing of the circuit breaker.

[0098] As shown in Figure 3 , Figure 4 and Figure 6 , the circuit breaker provided by the embodiment further comprises a first display member 257, the first display member 257 is provided with an eighth connecting portion 2571 and a display portion 2572, the display portion 2572 is arranged close to the first display frame 244, the eighth connecting portion 2571 is in an arc shape, one end of the eighth connecting portion 2571 is rotatably connected with the fixed shaft 224, and the other end is connected with the display portion 2572.

[0099] It can be explained that the circuit breaker provided by the embodiment is provided with an energy storage display area and a release display area on the display portion 2572, for a person to watch whether the circuit breaker is in an energy storage state.

[0100] As shown in Figure 3 , Figure 4 , Figure 6 and Figure 14 , the circuit breaker provided by the embodiment further comprises a second display member 259, at this time, the second display member 259 is used for displaying the state of the circuit breaker in opening and closing, and the area of the display state of the second display member 259 is arranged close to the second display frame 245.

[0101] As shown in Figure 4 , Figure 16 and Figure 17As shown, the circuit breaker provided by the embodiment further comprises a first tripping assembly 26, which is arranged close to the energy-releasing tripping part 251. The first tripping assembly 26 comprises a first tripping part 261. As an implementation, the first tripping part 261 moves close to the fifth abutting part 2511 under the action of an electromagnetic field until the fifth abutting part 2511 is acted on, so as to drive the fifth abutting part 2511 to rotate.

[0102] As shown, the circuit breaker provided by the embodiment further comprises a first tripping assembly 26, which is arranged close to the energy-releasing tripping part 251. The first tripping assembly 26 comprises a first tripping part 261. As an implementation, the first tripping part 261 moves close to the fifth abutting part 2511 under the action of an electromagnetic field until the fifth abutting part 2511 is acted on, so as to drive the fifth abutting part 2511 to rotate. Figure 4 and Figure 18 As shown, the circuit breaker provided by the embodiment further comprises a first tripping assembly 26, which is arranged close to the energy-releasing tripping part 251. The first tripping assembly 26 comprises a first tripping part 261. As an implementation, the first tripping part 261 moves close to the fifth abutting part 2511 under the action of an electromagnetic field until the fifth abutting part 2511 is acted on, so as to drive the fifth abutting part 2511 to rotate.

[0103] The circuit breaker with the above structure can be used as follows. The motor 211 can directly or indirectly drive the driving shaft 213 to rotate. At this time, the driving shaft 213 drives the energy storage turntable 221 to rotate. The energy storage turntable 221 drives the energy storage rolling shaft sleeve 223 to rotate in the process of rotation. At this time, the energy storage connecting rod 222 is limited by the energy-releasing limiting shaft 258 and fixed on the fixed shaft 224, so that the energy storage connecting rod 222 rotates around the fixed shaft 224. At this time, the energy storage biasing member 225 is compressed. At the same time, the energy storage locking shaft sleeve 226 is integrally formed with the energy storage turntable 221, so that the energy storage locking shaft sleeve 226 rotates with the energy storage turntable 221, so that the energy storage locking part 227 is clamped on the energy storage locking limiting shaft 228. In addition, after the energy storage biasing member 225 completes energy storage, the jump part 231 is clamped on the locking part 237, and the locking part 237 is clamped on the locking limiting part 240. At this time, the jump part 231 is locked.

[0104] The circuit breaker with the above structure can be used as follows. When the tripping button 243 is pressed, the seventh abutting part 2431 moves close to the locking limiting part 240 and abuts against the locking limiting part 240. Then, the locking limiting part 240 drives the fixed locking limiting shaft 239 to rotate until the fixed locking limiting shaft 239 is out of the limiting state of abutting against the fourth abutting part 2373. At this time, the locking biasing member 238 is reset and drives the locking part 237 to move, so that the locking part 237 is out of the limiting state of abutting against the third abutting part 2371 by the second abutting part 2312. At the same time, in the process of movement of the locking part 237, the tripping reset biasing member 253 drives the lower connecting rod shaft 252 to move. The lower connecting rod shaft 252 drives the fourth connecting rod 254 to move. The fourth connecting rod 254 drives the movable contact 256 to rotate reversely until the movable contact 256 is separated from the static contact 255. The circuit breaker is tripped.

[0105] As Figure 4 and Figure 18 shown, the circuit breaker provided by the embodiment further comprises a second tripping assembly 27, which is arranged close to the fixed locking limiting shaft 239, and the second tripping assembly 27 is provided with a second tripping piece 271, which is adapted to receive a rotating signal of the circuit board and rotate as an embodiment.

[0106] In the embodiment, if remote control is needed for closing operation of the circuit breaker, the first tripping piece 261 is only needed to be electrically connected with the circuit board, and a closing signal is given to the circuit board, the circuit board outputs a signal to the first tripping piece 261 to control the first tripping piece 261 to rotate, and the first tripping piece 261 drives the fifth abutting part 2511 to move in the process of rotation, and the fifth abutting part 2511 drives the energy release tripping piece 251 to rotate as a whole in the process of movement, which has the same effect as pressing the energy release button 242, and the circuit breaker is closed; if remote control is needed for opening operation of the circuit breaker, a tripping signal is given to the circuit board by remote control, the circuit board outputs a signal to the second tripping piece 271 to control the second tripping piece 271 to move, and the second tripping piece 271 drives the locking limiting piece 240 to rotate as a whole in the process of movement, which has the same effect as pressing the opening button 243, and the circuit breaker is opened.

[0107] It can be explained that the circuit breaker provided by the embodiment can also detect whether the circuit breaker is in an under-voltage abnormal state or the like, and since this part is a prior art, the present application does not improve it, and thus will not be described in detail.

[0108] In addition, as Figure 4 shown, the current transformer 32 is used to induct the line and feed back to the circuit board, and if an overload short circuit phenomenon occurs in the circuit breaker, the circuit board outputs a signal to the second tripping piece 271 to control the second tripping piece 271 to trip, and the circuit breaker is opened.

[0109] Obviously, the above embodiments are only examples for clearly illustrating, and not limitation on the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A circuit breaker, characterized in that, include: The housing mechanism (1) includes an upper housing (11), an intermediate housing (12) and a lower housing (13) connected sequentially along the height direction. The upper housing (11) and the intermediate housing (12) enclose a first mounting cavity, and the lower housing (13) has a second mounting cavity inside. Operating mechanism (2), which is disposed in the first mounting cavity; The main circuit mechanism (3) is disposed in the second mounting cavity. The main circuit mechanism (3) includes a terminal block (31), a current transformer (32), an arc extinguishing system, and a contact system. The operating mechanism (2) includes an electric drive assembly (21) and an energy storage assembly (22); The electric drive assembly (21) includes a motor (211), a first transmission gear (212), and a drive shaft (213). The drive end of the motor (211) directly or indirectly drives the first transmission gear (212) to rotate. The first transmission gear (212) is coaxially arranged with the drive shaft (213) and is mounted on the drive shaft (213). The energy storage component (22) includes an energy storage turntable (221), an energy storage connecting rod (222), an energy storage rolling bushing (223), a fixed shaft (224), and an energy storage biasing component (225). The energy storage turntable (221) is mounted on the drive shaft (213). The energy storage connecting rod (222) has a first connecting part (2221), a second connecting part (2222), and a third connecting part (2223). The first connecting part (2221) is disposed between the second connecting part (2222) and the third connecting part (2223). The third connecting part (2223) is located on the side of the first connecting part (2221) closer to the energy storage turntable (221). The energy storage rolling bushing (223) is rotatably mounted on the third connecting part (2223). The fixed shaft (224) is connected to the first connecting part (2221). The energy storage component (22) further includes an energy storage lock bushing (226), an energy storage lock fastener (227), and an energy storage lock limit shaft (228). The energy storage lock bushing (226) is integrally formed with the energy storage turntable (221). The energy storage lock fastener (227) and the energy storage lock limit shaft (228) are both located on the side of the energy storage lock bushing (226) away from the energy storage biasing component (225). The energy storage lock fastener (227) is disposed between the energy storage lock limit shaft (228) and the energy storage lock bushing (226). The energy storage lock fastener (227) has a snap-fit ​​portion (2271) and a first abutment portion (2272). The snap-fit ​​portion (2271) is disposed away from the energy storage lock bushing (226), and the first abutment portion (2272) is disposed close to the energy storage lock bushing (226). The operating mechanism (2) further includes a locking assembly (23), which includes: A jump fastener (231) is rotatably mounted on the drive shaft (213), and the jump fastener (231) is provided with a fourth connecting part (2311) and a second abutting part (2312); A jumper biasing element (232) is mounted on the drive shaft (213); The first link (233) has one end connected to the fourth connecting part (2311); The second link (234) has one end connected to the other end of the first link (233); The third link (235) has a fifth connecting part (2351) and a sixth connecting part (2352). The fifth connecting part (2351) is a rotating part, and the sixth connecting part (2352) is located on the side of the fifth connecting part (2351) away from the drive shaft (213). The sixth connecting part (2352) is connected to the other end of the second link (234). The locking spindle (236) is spaced apart from the drive shaft (213); A locking member (237) is rotatably mounted on the locking main shaft (236), and the jumping member (231) is located on the side of the second abutment portion (2312) away from the drive shaft (213). The locking member (237) is provided with a third abutment portion (2371) and a seventh connecting portion (2372). The third abutment portion (2371) is provided on the side close to the second abutment portion (2312), and the seventh connecting portion (2372) is located on the side of the locking main shaft (236) away from the third connecting rod (235). The locking bias member (238) is fixed at one end and fixedly connected to the seventh connecting part (2372) at the other end.

2. The circuit breaker according to claim 1, characterized in that, The latch assembly (23) further includes a fixed latch limiting shaft (239), which is located between the latch main shaft (236) and the third link (235); The locking member (237) also has a fourth abutment (2373), which is located on the side of the locking main shaft (236) near the third link (235).

3. The circuit breaker according to claim 2, characterized in that, The upper housing (11) includes a display housing (111) and a base (112). The display housing (111) is located on the side of the middle housing (12) away from the lower housing (13), and the base (112) is located between the display housing (111) and the middle housing (12). The operating mechanism (2) further includes a manual transmission assembly (24), which is mounted on the display housing (111). The manual transmission assembly (24) includes an operating handle (241), an energy release button (242), a trip button (243), a first display frame (244), and a second display frame (245).

4. The circuit breaker according to claim 3, characterized in that, The operating mechanism (2) also includes other components (25), including an energy release release member (251), which is fixedly installed on the energy storage lock limiting shaft (228). The energy release release member (251) is provided with a fifth abutment part (2511), which is adapted to rotate under the action of external force. The release button (242) is provided with a sixth abutment (2421). When the release button (242) is pressed by external force, the sixth abutment (2421) moves to the side close to the fifth abutment (2511) until it abuts against the fifth abutment (2511).

5. The circuit breaker according to claim 4, characterized in that, The other components (25) also include: The lower connecting rod shaft (252) is located on the side of the fixed latch limiting shaft (239) away from the latch main shaft (236); The circuit breaker reset biasing component (253) has one end connected to the latch main shaft (236) and the other end connected to the fixed latch limiting shaft (239). The fourth link (254) has one end mounted on the lower link shaft (252); The stationary contact (255) is located below the third link (235); The moving contact (256) is fixedly installed at the other end of the fourth link (254) and is adapted to move closer to or further away from the stationary contact (255) under the action of the fourth link (254).

6. The circuit breaker according to claim 5, characterized in that, The other components (25) also include a first display element (257), which has an eighth connecting part (2571) and a display part (2572). The display part (2572) is located close to the first display frame (244). The eighth connecting part (2571) has an arc-shaped structure. One end of the eighth connecting part (2571) is rotatably connected to the fixed shaft (224), and the other end is connected to the display part (2572).

7. The circuit breaker according to any one of claims 4-6, characterized in that, The operating mechanism (2) further includes a first tripping component (26), which is disposed close to the energy-releasing tripping member (251). The first tripping component (26) includes a first tripping member (261), which drives the fifth abutment part (2511) to rotate under the action of an electromagnetic field.

8. The circuit breaker according to any one of claims 4-6, characterized in that, The locking assembly further includes a locking limiting member (240), which is mounted on the fixed locking limiting shaft (239); The trip button (243) is provided with a seventh abutment part (2431). The seventh abutment part (2431) is located near the fixed latch limiting shaft (239). When the trip button (243) is pressed by an external force, the seventh abutment part (2431) moves near the latch limiting member (240) until it abuts against the latch limiting member (240).

9. The circuit breaker according to claim 8, characterized in that, The operating mechanism (2) further includes a second release assembly (27), which is located near the fixed latch limiting shaft (239). The second release assembly (27) is provided with a second release member (271), which is adapted to receive the rotation signal of the circuit board and rotate accordingly.

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