CN212695091U - Compact reclosing circuit breaker - Google Patents

Abstract

The compact reclosing circuit breaker comprises an L-phase pole module and an N-phase pole module which are arranged in parallel, wherein the reclosing module and an N-phase contact mechanism are arranged between an N-pole incoming line terminal and an N-pole outgoing line terminal, the reclosing module comprises a circuit board and a driving device connected with the circuit board, the driving device is arranged on the upper portion of the circuit board in a stacking mode and is in linkage connection with the L-phase pole module, the N-pole contact mechanism is arranged on the lower portion of the circuit board in a stacking mode and comprises an N-pole static contact and an N-pole moving contact which are matched with each other, the N-pole static contact comprises an N-pole static contact plate, the N-pole static contact plate is arranged in a space between the circuit board and the inner bottom wall of a shell, one end of the N-pole static contact plate is connected with the N-pole outgoing line terminal, and the other. The utility model discloses to reclose the structure that the utmost point module of floodgate module and N looks closed in same utmost point, make the 1PN circuit breaker of the same volume have the function of reclosing a floodgate, reduced the volume of circuit breaker.

Description

Compact reclosing circuit breaker

Technical Field

The utility model relates to a circuit breaker, concretely relates to compact reclosing circuit breaker.

Background

The circuit breaker can be used for infrequent breaking and putting through distribution lines, overload and short-circuit protection are carried out to distribution lines and equipment, can the automatic cutout circuit when distribution lines or equipment take place serious overload or faults such as short circuit, and current circuit breaker has the auto-reclosing function usually, promptly after the circuit breaker drops into normal operating and causes the tripping operation because of the external line trouble, automatic reclosing is once again after short time delay to improve the power supply reliability.

At present, 1PN reclosing circuit breakers in the market are mostly formed by assembling 36mm wide 1PN circuit breakers and 18mm wide motor driving modules, and along with the improvement of national power grids and the application of markets such as intelligent buildings, the assembling structure can not meet the requirements of intellectualization and miniaturization of the circuit breakers gradually.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a compact reclosing circuit breaker small, that the reliability is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a compact reclosing circuit breaker comprises a shell, an L-phase pole module and an N-phase pole module are arranged in the shell in parallel, an N-pole incoming line terminal and an N-pole outgoing line terminal are arranged on two sides of the N-phase pole module, a reclosing module and an N-pole contact mechanism are arranged between the N-pole incoming line terminal and the N-pole outgoing line terminal, the reclosing module comprises a circuit board and a driving device connected with the circuit board, the driving device is arranged on the circuit board in a stacked mode and is in linkage connection with the L-phase pole module, an N-pole contact mechanism is arranged on the lower portion of the circuit board in a stacked mode, the N-pole contact mechanism comprises an N-pole static contact and an N-pole moving contact which are matched with each other, the N-pole static contact comprises an N-pole static contact plate, the N-pole static contact plate is arranged along the space between the side edge of the bottom of the circuit board and the side wall of the bottom in the shell, one end of the N-pole static contact plate is connected with the N-pole wire outlet terminal, and the other end of the N-pole static contact plate is provided with an N-pole static contact matched with the N-pole moving contact.

Further, be provided with the limiting plate in the casing, the limiting plate forms the striking runway with the cooperation of the shells inner wall of N utmost point module lower part, and the setting of striking runway is followed to the utmost point stationary contact board of N.

And furthermore, a static contact arc striking plate is arranged at one end of the N-pole static contact plate, which is provided with the N-pole static contact, and the static contact arc striking plate is positioned below the N-pole static contact.

Further, a partition board is arranged in the shell, the partition board divides the space in the shell into two chambers, one chamber is used for installing the L-phase pole module, the other chamber is used for installing the N-phase pole module, and the circuit board is arranged on one side of the partition board and located in the cavity for installing the N-phase pole module.

Furthermore, the N-pole contact mechanism also comprises an N-pole contact spring electrically connected with the N-pole moving contact, and a first arc striking plate and an L-pole spring electrically connected with the first arc striking plate are arranged in the L-phase pole module; be equipped with the post of getting electricity in one side of circuit board, the post of getting electricity is used for realizing the N utmost point of circuit board to get with N utmost point contact spring coupling, is equipped with the pad at the opposite side of circuit board, the L utmost point of circuit board is got to pad and L utmost point spring coupling realization circuit board.

Furthermore, the N pole contact spring comprises a first spring and a second spring, one end of the first spring is connected with the power taking column of the circuit board, the other end of the first spring and one end of the second spring are connected to one conductive shaft in the N pole module, and the other end of the second spring is connected with the N pole moving contact.

Furthermore, an N-pole incoming terminal and an N-pole outgoing terminal are respectively arranged on two sides of the N-phase pole module, a separation plate is arranged between the N-pole contact mechanism and the circuit board, the separation plate is arranged close to the N-pole incoming terminal, and an arc guiding groove is formed in the position, corresponding to the N-pole moving contact, of the separation plate.

Further, the division board includes second isolation portion is equipped with the mounting groove that is used for installing the utmost point inlet wire terminal of N.

Further, drive arrangement includes actuating handle, gear drive, drive structure and motor, actuating handle is connected with the handle structure linkage of L looks utmost point module, and the motor meshes with gear drive, and drive structure is including setting up the combined floodgate driving piece on gear drive, and the combined floodgate driving piece cooperates with actuating handle, and actuating motor rotates after the controller of circuit board receives the signal of closing a floodgate, and along with gear drive's rotation, the combined floodgate driving piece makes actuating handle drive handle structure rotate to the direction of closing a floodgate.

The driving device comprises a gear transmission mechanism, a driving structure and a motor, the motor is meshed with the gear transmission mechanism, the driving structure comprises a brake separating driving part arranged on the gear transmission mechanism and a brake separating rocker arm rotatably arranged in the N-phase pole module, the motor is driven to rotate after a controller of the circuit board receives a brake separating signal, the brake separating driving part is matched with the brake separating rocker arm to enable the brake separating rocker arm to rotate along with the rotation of the gear transmission mechanism, and the brake separating rocker arm drives an operating mechanism of the L-phase pole module to act to enable the circuit breaker to be subjected to brake separating; the operating mechanism of the L-phase pole module comprises a support, a lever, a jump buckle, a lock catch and a contact support, wherein the support is rotatably installed in the L-phase pole module, the jump buckle and the lock catch are rotatably installed on the support, the contact support is connected to the support, one end of the lever is connected with the handle structure, the other end of the lever is connected with the jump buckle, the jump buckle is connected with an end arm lock catch of the lock catch, one end of the contact support is connected with the L-pole moving contact, an assembling hole is formed in the lock catch, a lock catch linkage shaft is installed in the assembling hole and extends into the N-phase pole module to be matched with the opening rocker arm, and the jump buckle in the operating mechanism and the lock catch structure are unlocked to enable the breaker to.

The utility model discloses a compact reclosing circuit breaker sets up reclosing module and N utmost point contact mechanism in the utmost point module of N, and wherein the extremely quiet touch panel of N utmost point static contact line board and the space setting between the internal diapire of casing, this kind of structure that merges reclosing module and the utmost point module of N looks in same utmost point makes 1PN circuit breaker of the same volume have the function of reclosing, has reduced the volume of circuit breaker.

In addition, the isolation plate is arranged between the N-pole contact mechanism and the circuit board, so that the N-pole contact mechanism is prevented from being in direct contact with the circuit board, the space occupied by the isolation plate in the shell is small, and the reduction of the size of the circuit breaker is facilitated.

In addition, the circuit board adopts L utmost point spring and N utmost point contact spring to get the electricity, avoids setting up too much wire in the casing inside, does benefit to the stability of getting the electricity of maintaining the circuit board.

Drawings

Fig. 1 is a schematic structural diagram of a compact reclosing circuit breaker of the present invention;

fig. 2 is a schematic diagram of an internal structure of the compact reclosing circuit breaker of the present invention;

fig. 3 is a schematic diagram of the internal structure of the compact reclosing circuit breaker of the present invention (without the reclosing module and the N-pole contact mechanism);

fig. 4 is a schematic structural diagram of an L-phase pole module in the compact reclosing circuit breaker of the present invention;

fig. 5 is a schematic structural diagram of an N-phase pole module in the compact reclosing circuit breaker of the present invention;

fig. 6 is a schematic structural diagram of an N-phase pole module in the compact reclosing circuit breaker of the present invention;

fig. 7 is a schematic diagram of an internal structure of the compact reclosing circuit breaker of the present invention;

fig. 8 is a schematic diagram of an internal structure of the compact reclosing circuit breaker of the present invention;

fig. 9 is the utility model relates to a compact reclosing circuit breaker's circuit board structure schematic diagram.

Detailed Description

The following further describes a specific embodiment of the compact reclosing circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 9. The utility model discloses a compact reclosing circuit breaker is not limited to the description of following embodiment.

A compact reclosing circuit breaker, as shown in fig. 1-3, includes a housing 1, preferably, the housing 1 is a housing 1 with a width of 36mm, a partition plate 11 is disposed in the housing 1, the partition plate 11 divides the space in the housing 1 into two chambers, one of the two chambers is provided with an L-phase pole module 2, and the other chamber is provided with an N-phase pole module 3.

The L-phase pole module 2 includes a pair of L-pole incoming line terminal 241 and L-pole outgoing line terminal 242 disposed at two sides of the L-phase pole module 2, a handle structure 21 and an operating mechanism 23 are disposed between the L-pole incoming line terminal 241 and the L-pole outgoing line terminal 242, an L-pole moving contact of an L-pole contact mechanism 22 is connected to the operating mechanism 23, a current transformer 27 is disposed between the L-pole moving contact and the L-pole incoming line terminal 241, a conductor connected between the L-pole moving contact and the L-pole incoming line terminal 241 passes through the current transformer 27, preferably, the conductor connected between the L-pole moving contact and the L-pole incoming line terminal 241 is a flexible connection, the current transformer 27 is connected to a circuit board 41 of the reclosing module 4 for feeding back a current signal of a main line to a controller of the circuit board 41, and an interface 413 (see fig. 3) matched with a lead of the current transformer 27 is preferably disposed on, the head of the lead mates with interface 413.

An improvement point of L looks utmost point module 2 in this application lies in, use current transformer 27 to replace overload protection device's bimetallic subassembly in current circuit breaker in L looks utmost point module 2, the current signal of main line is gathered through current transformer 27, current transformer 27 transmits the current signal who gathers to the controller of circuit board 41, it makes circuit breaker separating brake through drive reclosing module 4 when the controller of circuit board 41 detects that the main line takes place to transship, overload protection device for adopting bimetallic subassembly has more extensive range of application, and need not carry out loaded down with trivial details debugging, and occupy less space inside the circuit breaker.

As shown in fig. 2-4 and 9, the L-phase module 2 includes an L-phase module housing, a pair of L-pole connection terminals, an operating mechanism 23, an L-pole contact mechanism 22, a short-circuit protection mechanism 25, an arc-extinguishing chamber 26 and a current transformer 27 are disposed inside the L-phase module housing, the pair of L-pole connection terminals are disposed on two sides of the L-phase module 2 respectively as an L-pole wire-inlet terminal 241 and an L-pole wire-outlet terminal 242, the operating mechanism 23 is disposed on an upper portion inside the L-phase module housing and is located between the L-pole wire-inlet terminal 241 and the L-pole wire-outlet terminal 242, the short-circuit protection mechanism 25 and the arc-extinguishing chamber 26 are disposed on one side of the operating mechanism 23, the arc-extinguishing chamber 26 is located below the short-circuit protection mechanism 25, an L-pole fixed contact in the L-pole contact mechanism 22 disposed on one side of the arc, an L-pole moving contact in the L-pole contact mechanism 22 is connected to the operating mechanism 23, the L-pole moving contact and the L-pole static contact are arranged oppositely, a current transformer 27 is arranged on the other side of the L-pole moving contact and located on the lower portion of the shell of the L-pole module, a flexible connection connected between the L-pole moving contact and the L-pole wire inlet terminal 241 penetrates through the current transformer 27, the current transformer 27 is connected with a circuit board 41 of the reclosing module 4 through a wire, a first arc striking plate 261 is arranged on one side of the current transformer 27, one end of the first arc striking plate 261 is connected with the L-pole wire inlet terminal 241 through a wire, the other end of the first arc striking plate 261 extends into the arc extinguish chamber 26, meanwhile, the first arc striking plate 261 is connected with a main circuit of the reclosing module 4 for taking electricity from the L pole of the circuit board 41, preferably, a power taking plate 262 is arranged on the first arc striking plate 261, the circuit board 41 realizes the electricity taking from the L pole through a, as shown in fig. 7, one end of the L pole spring 28 passes through the pad of the partition board 11 and the circuit board 41 to be connected, and the other end of the L pole spring 28 is elastically connected to the electricity taking board 262, preferably, the L pole spring 28 is a pressure spring, one side of the circuit board 41 facing the partition board 11 is provided with a pad matched with the L pole spring 28, and the electricity taking board 262 protrudes and is disposed on the side of the first arc striking board 261 close to one side of the partition board 11. An arc discharge channel is arranged on the other side of the arc extinguish chamber 26, which is beneficial to discharge of arc tail gas and prevents the electric arc from flowing back.

The operating mechanism 23 comprises a support, a lever, a jump buckle, a lock catch and a contact support, wherein the support is rotatably arranged in the L-phase pole module shell, the jump buckle and the lock catch are rotatably arranged on the support, the contact support is connected with the support, one end of the lever is connected with the handle structure 21, the other end of the lever is connected with the jump buckle, the jump buckle is connected with an end arm hasp of the lock catch, one end of the contact support is connected with an L-pole moving contact of the L-pole contact mechanism 22, and the L-pole moving contact is arranged opposite to an L-pole static contact fixedly arranged in the L-phase pole module shell; one side of the other end arm of the lock catch is arranged opposite to an electromagnetic trip device in the short-circuit protection mechanism 25, an assembly hole is formed in the lock catch, a lock catch linkage shaft 231 (see fig. 8) is installed in the assembly hole, the lock catch linkage shaft 231 penetrates through the partition plate 11 and extends into the N-phase pole module 3 to be matched with a driving structure of the reclosing module 4, and is specifically matched with a tripping rocker arm 453 in the driving structure to enable the tripping in the operation mechanism 23 and a hasp structure of the lock catch to be unlocked to enable the breaker to be tripped.

The short-circuit protection mechanism 25 comprises an electromagnetic release, the electromagnetic release comprises an electromagnetic coil, one end of the electromagnetic coil is provided with a firing pin, the firing pin is opposite to one end arm of the lock catch, when a main line is short-circuited, the firing pin moves to enable the lock catch to rotate, the lock catch is connected with a buckle of the jump buckle to be unlocked, and the breaker module is switched off.

As shown in fig. 2-3 and 5-9, the N-phase module 3 includes a pair of N-pole connection terminals, an N-pole contact mechanism 32, and a partition plate 33 for installing the N-pole contact mechanism 32, the reclosing module 4 is stacked on the upper portion and one side of the circuit board 41, the N-pole contact mechanism 32 is stacked on the other side of the circuit board 41, and the partition plate 33 is disposed between the N-pole contact mechanism 32 and the circuit board 41, the pair of N-pole connection terminals are respectively disposed on both sides of the N-phase module 3 as an N-pole inlet terminal 311 and an N-pole outlet terminal 312, the N-pole contact mechanism 32 and the partition plate 33 are disposed between the N-pole inlet terminal 311 and the N-pole outlet terminal 312, the partition plate 33 is disposed close to the N-pole inlet terminal 311, the partition plate 33 partitions the N-pole contact mechanism 32 from the circuit board 41 of the reclosing module 4, compared with the existing two-pole structure in which the reclosing module 4 and the N-phase module 3 are spliced, the configuration in which the reclosing module 4 is provided in the N-phase module 3 and the circuit board 41 of the reclosing module 4 and the N-pole contact mechanism 32 are separated only by the partition plate 11 can further reduce the volume of the circuit breaker, but of course, a circuit board 41 provided with a notch corresponding to the partition plate 33 and the N-pole contact mechanism 32 may be used, and the partition plate 33 and the N-pole contact mechanism 32 are not laminated on the circuit board 41. As shown in fig. 5 and 6, the reclosure module 4 is disposed near the upper portion of the handle structure 21, and the N-pole contact mechanism 32 is disposed near the N-pole outlet terminal 312.

As shown in fig. 5, the N-pole contact mechanism 32 includes an N-pole moving contact 321 and an N-pole stationary contact which are matched with each other, the N-pole moving contact 321 is rotatably installed on the upper portion of the isolation plate 33, the N-pole moving contact 321 is connected with the N-pole incoming terminal 311 through a conducting wire, the N-pole stationary contact includes an N-pole stationary contact 322, the N-pole stationary contact 322 is disposed along a space between the bottom side of the circuit board 41 and the inner bottom wall of the housing 1, preferably, the N-pole stationary contact 322 is fixedly disposed along a side wall of the isolation plate 33, one end of the N-pole stationary contact 322 is provided with an N-pole stationary contact 323 which is matched with the N-pole moving contact 321, the N-pole stationary contact 323 is disposed opposite to the N-pole moving contact 321, meanwhile, one end of the N-pole stationary contact 322 which is provided with the N-pole stationary contact 323 is provided with a stationary contact tab 324, the other end of the N-pole stationary contact 322, the arc striking structure corresponding to the N-pole contact mechanism 32 is arranged on the isolation plate 33 and used for leading the arc tail gas out of the shell 1 when the N-pole contact mechanism 32 is switched on and off, so that the reduction of the size of the circuit breaker is facilitated, the arc striking structure and the static contact arc striking plate 324 of the N-pole static contact jointly form an arc extinguishing system of the N-pole contact mechanism 32, the stable discharge of the arc tail gas can be still ensured under the condition that the arc extinguishing chamber 26 is not arranged, and the reduction of the size of the circuit breaker is further facilitated.

The isolation plate 33 includes a first isolation portion 331 for mounting the N-pole contact mechanism 32, preferably, an arc striking structure corresponding to the N-pole contact mechanism 32 is provided on the first isolation portion 331, the arc striking structure includes an arc striking groove 331a and an arc striking runway 331b respectively provided on two sides of the first isolation portion 331, preferably, the arc striking runway 331b is provided in a space between the circuit board 41 and an inner bottom wall of the housing 1, the N-pole moving contact 321 swings above the arc striking groove 331a, and the N-pole stationary contact is provided along the arc striking runway 331b, which further reduces the volume of the circuit breaker.

As shown in fig. 2, 3, 5 and 6, an embodiment of the isolation plate 33 is provided, where the isolation plate 33 includes a first isolation portion 331 and a second isolation portion 332 which are integrally formed, the first isolation portion 331 is in a plate shape, one side of the first isolation portion 331 is connected to the second isolation portion 332, the second isolation portion 332 is provided with a mounting groove for mounting the N-pole wire inlet terminal 311, a lower portion of the other side wall of the first isolation portion 331 is bent away from the first isolation portion 331 to form a limit plate 3312, the limit plate 3312 is located in a space between the circuit board 41 and an inner bottom wall of the housing 1, the limit plate 3312 cooperates with an inner bottom wall of the housing 1 at a lower portion of the N-pole module 3 to form an arc-leading track 331b, the N-pole stationary contact can be disposed along the arc leading track 331b and connected to the N-pole wire outlet terminal 312, of course, the other side wall of the first isolation portion 331 can form a complete arc leading track 331b, in this case, two opposite position-limiting plates 3312 are provided, and a gap between the two position-limiting plates 3312 serves as an arc-starting runway 331b, and the arc-starting runway 331b is preferably connected to the exhaust hole of the case 1. A plurality of arc striking plates 3311 are disposed at intervals in the middle of the first isolation portion 331, a gap formed between two adjacent arc striking plates 3311 serves as an arc striking groove 331a, the N-pole moving contact 321 is stacked above the arc striking groove 331a, and the N-pole moving contact 321 can swing above the arc striking groove 331a, preferably, the number of the arc striking plates 3311 is two, the lower portions of the two arc striking plates 3311 are deflected in the same direction, and the gap between the two arc striking plates 3311 serves as the arc striking groove 331a, as shown in fig. 5 and 6. The N-pole moving contact 321 is rotatably installed on the upper portion of the first isolation portion 331, the N-pole moving contact 321 is connected in a linkage manner with the L-pole moving contact of the L-phase pole module 2 through the isolation plate 33, the circuit board 41 and the partition 11, and the lower portion of the N-pole moving contact 321 can swing on the first partition 11 portion to be matched with the N-pole static contact. An N-pole static contact plate 322 of the N-pole static contact is arranged along the limiting plate 3312, an N-pole static contact 323 is arranged on one side of the N-pole static contact plate 322 extending into the first isolating portion 331, a static contact arc striking plate 324 is further arranged on one side of the N-pole static contact plate 322 extending into the first isolating portion 331, the static contact arc striking plate 324 is located below the N-pole static contact 323, preferably, one end of the static contact arc striking plate 324 is connected to the N-pole static contact plate 322, the other end of the static contact arc striking plate 324 is in the same bending direction as the arc striking plate 3311, the static contact arc striking plate 324 is located on one side of the arc striking plate 3311 and is jointly connected with the arc striking plate 3311, and a space for an arc to flow is reserved between the static contact arc striking plate 324 and the arc striking plate 3311, so that arc gas can be discharged out of the housing 1. When the N-pole contact mechanism 32 opens and closes the first isolation portion 331, the arc is drawn out of the housing 1 by the arc-striking groove 331a and the arc-striking runner 331 b.

The N utmost point contact mechanism 32 still includes electrically conductive N utmost point contact spring, and electrically conductive N utmost point contact spring and the cooperation of L utmost point spring 28 are used, supply circuit board 41 to connect nearby and get the electricity with the N utmost point and the L utmost point that realize circuit board 41, and this kind of mode of getting electricity avoids setting up the wire that makes circuit board 41 get the electricity, can not produce because of the wire fracture causes the potential safety hazard, and simultaneously, this kind of space of getting the electricity mode occupy is less, does benefit to the miniaturized setting of circuit breaker.

An embodiment of a first N-pole contact spring is provided with reference to fig. 5, the N-pole contact spring is used to provide a closing driving force for an N-pole moving contact 321 and to make a circuit board 41 get power from an N pole, the N-pole contact spring includes a first spring 3211 and a second spring 3212, one end of the first spring 3211 is connected to a power-getting post 411 of the circuit board 41, the other end of the first spring 3211 and one end of the second spring 3212 are connected to a conductive shaft in the N-pole module 3, the other end of the second spring 3212 is connected to the N-pole moving contact 321, the second spring 3212 is a tension spring and is disposed on one side of the N-pole moving contact 321 close to an N-pole stationary contact, and the second spring 3212 provides a closing driving force for the N-pole moving contact 321 and at the same time, the circuit board 41. It should be noted that, as an optimal solution in this embodiment, a portion of the circuit board 41 corresponding to the conductive shaft is hollowed to form an avoiding hole, so that the conductive shaft does not directly contact with the circuit board 41, and the conductive shaft needs to be firmly connected to the housing 1, preferably, a conductive shaft mounting hole is disposed on the housing 1, and an elastic force of the second spring 3212 capable of providing a closing driving force for the N-pole moving contact 321 is relatively large, so that the N-pole electricity taking of the circuit board 41 needs to be realized through mutual cooperation of the first spring 3211 and the second spring 3212.

In conjunction with fig. 6, an embodiment of a second N-pole contact spring is provided, where the N-pole contact spring includes a third spring 3213 and a second spring 3212 (the second spring 3212 is not shown in the drawing), one end of the third spring 3213 is inserted into one conductive jack of the circuit board 41, the other end of the third spring 3213 and one end of the second spring 3212 are connected to one conductive shaft in the N-phase pole module 3, the other end of the second spring 3212 is connected to the N-pole moving contact 321, the third spring 3213 is a torsion spring, one torsion spring arm of which is bent and inserted into the conductive jack, compared with the first N-pole contact spring embodiment, the second spring 3212 is a tension spring and is disposed on a side of the N-pole moving contact 321 close to the N-pole moving contact, the second spring 3212 provides a driving force for the N-pole moving contact 321, and at the same time, the circuit board 41 takes power from the N-pole, in this embodiment, there is no need to dispose a, the processing of the wiring board 41 is reduced, and at the same time, the third spring 3213 can be ensured to maintain stable electrical connection with the wiring board 41.

As a third embodiment of an N-pole contact spring, the present embodiment is different from the first and second embodiments in that the N-pole contact spring may only include a second spring 3212, one end of the second spring 3212 is connected to the N-pole moving contact 321, the other end of the second spring 3212 is connected to a wire shaft, and the wire shaft is directly connected to the circuit board 41 to supply power to the circuit board 41, but the circuit board 41 is easily damaged by the way that the wire shaft 41 is directly connected to the circuit board 41.

As shown in fig. 2-3 and 5-9, the reclosure module 4 includes a circuit board 41 and a driving device, the driving device includes a driving handle 42, a gear transmission mechanism 43, a driving structure and a motor 44 which are connected in a linkage manner, the circuit board 41 is arranged inside the N-phase pole module 3 and is stacked on the partition plate 11, the circuit board 41 is respectively connected with the L-phase pole module 2 and the N-phase pole module 3 for controlling the power supply of the circuit board 41 to take power, and the circuit board 41 preferably takes power through the N-pole contact spring arranged in the N-phase pole module 3 and the L-pole spring 28 arranged in the L-phase pole module 2. Specifically, as shown in fig. 9, a power taking post 411 is arranged on one side of the circuit board 41, a pad is arranged on the other side of the circuit board 41, the power taking post 411 is located in the N-phase pole module 3, the circuit board 41 is connected with the N-pole moving contact 321 through an N-pole contact spring and used for achieving power taking of the N pole of the circuit board 41, the pad is arranged on one side, facing the L-phase pole module 2, of the circuit board 41, one end of the L-pole spring 28 of the L-phase pole module 2 is connected with the pad, the other end of the L-pole spring is connected with the first arc striking plate 261 of the L-phase pole module 2, power taking of the L pole of the circuit board 41 is achieved, and the power taking mode of the circuit board 41 avoids power taking through a welding wire, so that the machining process is. Of course, the power-taking post 411 may not be provided on the circuit board 41, and one end of the N-pole contact spring connected to the circuit board 41 may be directly inserted into one of the insertion holes of the circuit board 41.

As shown in fig. 5-7, the driving handle 42, the gear transmission mechanism 43 and the motor 44 are stacked on the surface of the circuit board 41, the driving handle 42 is rotatably installed on the upper portion of the N-phase pole module 3 and is linked with the handle structure 21 of the L-phase pole module 2 through a handle linkage shaft, the driving handle 42 and the gear transmission mechanism 43 are driven to rotate by the closing driving member 451 of the driving structure, the gear transmission mechanism 43 is in transmission connection with the motor 44, the motor 44 is driven to rotate after the controller of the circuit board 41 receives a closing action signal, and the operating mechanism 23 drives the L-pole contact mechanism 22 and the N-pole contact mechanism 32 to close under the mutual cooperation of the gear transmission mechanism 43, the closing driving member 451 and the driving handle 42, so as to realize the automatic closing of the circuit breaker.

As shown in fig. 7, the driving structure further includes a brake separating driving portion 452 and a brake separating rocker arm 453, the brake separating driving portion 452 is disposed on the gear transmission mechanism 43, preferably, on a side of the gear transmission mechanism 43 close to the partition 11, the brake separating rocker arm 453 is rotatably disposed on the partition 11, the driving motor 44 is driven to rotate after the controller of the circuit board 41 receives a brake separating operation signal, the brake separating driving portion 452 cooperates with the brake separating rocker arm 453 to rotate the brake separating rocker arm 453 along with the rotation of the gear transmission mechanism 43, the rotation of the brake separating rocker arm 453 enables the latch linkage shaft 231 to drive the operating mechanism 23 of the L-phase pole module 2 to operate, and after the latch of the operating mechanism 23 is unlocked from the latched structure of the trip, the L-pole contact mechanism 22 and the N-pole contact mechanism 32 are separated to realize automatic brake separation of the circuit breaker.

As shown in fig. 2, 3, 5-7, the gear transmission mechanism 43 includes four first gears 431, second gears 432, third gears 433, and fourth gears 434 engaged in sequence, where the first gear 431 is engaged with the motor 44 through a worm, the motor 44 is disposed on one side of the N-phase pole module 3, and is located on the left side of the N-phase pole module 3 in the drawing, a closing driving member 451 is disposed on one side of the fourth gear 434 away from the circuit board 41, preferably, a mounting hole is disposed on the fourth gear 434, one end of the closing driving member 451 is installed in the mounting hole as a connecting end, and the other end of the closing driving member 451 is engaged with the driving handle 42 as a driving end; a switching-off driving part 452 is arranged on one side of the fourth gear 434 facing the circuit board 41, and the switching-off driving part 452 is a protruding structure arranged on the fourth gear 434; the opening rocker arm 453 is rotatably mounted on the partition plate 11, the opening rocker arm 453 comprises a short arm 4531 and a long arm 4532, the short arm 4531 is used for being matched with the opening driving portion 452 to enable the opening rocker arm 453 to rotate, the long arm 4532 is used for being matched with the locking linkage shaft 231 to enable the operating mechanism 23 of the L-phase pole module 2 to act, preferably, an included angle between the long arm 4532 and the short arm 4531 ranges from 90 degrees to 180 degrees, preferably, a reset spring 454 is arranged on one side of the opening rocker arm 453, the reset spring 454 is compressed when the opening rocker arm 453 performs opening rotation, and after the opening rocker arm 453 completes opening rotation, the reset spring 454 provides reset force to enable the opening rocker arm 453 to rotate back to the original position. Of course, the number of corresponding gears may be increased or decreased as needed, for example, only 2 or 3 gears, or 5 gears may be provided.

An embodiment of the driving handle 42 and the gear transmission mechanism 43 is provided in conjunction with fig. 2, 3 and 5-7, wherein the driving handle 42 has a protruding handle portion 421, a track groove 111 for matching with the driving end of the closing driving member 451 is formed on the partition 11 below the driving handle 42, and the driving end of the closing driving member 451 slides along the track groove 111 as the fourth gear 434 performs the opening and closing rotation, and the driving end rotates the driving handle 42 by pushing the handle portion 421; when the motor 44 drives the gear transmission mechanism 43 to perform closing rotation, the rotation direction of the fourth gear 434 in fig. 5 and 6 is counterclockwise, at this time, the driving end of the closing driving member 451 slides from the inner end of the track groove 111 to the outer end of the track groove 111, the closing rotation of the driving handle 42 is realized by pushing the handle portion 421 after the driving end contacts with the handle portion 421, the closing rotation direction of the driving handle 42 is clockwise, and at this time, the opening driving portion 452 is not matched with the opening rocker arm 453; when the motor 44 drives the gear transmission mechanism 43 to perform opening rotation, the rotation direction of the fourth gear 434 in fig. 5 and 6 is clockwise, at this time, the opening driving portion 452 of the fourth gear 434 rotates and cooperates with the short arm 4531 of the opening rocker 453 to rotate the opening rocker 453, the long arm 4532 of the opening rocker 453 cooperates with the latch linkage shaft 231 of the operating mechanism 23 to unlock the latch and the trip of the operating mechanism 23, the operating mechanism 23 enables the L-pole contact mechanism 22 and the N-pole contact mechanism 32 to perform opening, the driving end of the closing driving member 451 slides from the outer end of the track slot 111 to the inner end of the track slot 111, and the handle portion 421 performs counterclockwise opening rotation after the driving end is removed from pushing action. The circuit board 41 is provided with an escape groove 412 through which the opening driving portion 452 of the fourth gear 434 moves, and the partition plate 11 is provided with a plurality of through holes for linking the L-phase pole module 2 with the reclosing module 4 and the N-phase pole module 3.

Referring to fig. 8, a track groove 111 is formed in the upper portion of the partition plate 11, a linkage hole 112 is formed in the middle portion of the partition plate 11, through which the latch linkage shaft 231 passes, and the linkage hole 112 is preferably a kidney-shaped hole, through which the latch linkage shaft 231 passes and is capable of moving in the linkage hole 112, and an opening rocker 453 and a return spring 454 are preferably rotatably installed in a space between the linkage hole 112 and the track groove 111, as shown in fig. 8, the return spring 454 is located on the upper portion of the opening rocker 453, a short arm 4531 of the opening rocker 453 is configured to cooperate with one elastic arm of the return spring 454, when the opening rocker 453 rotates, the return spring 454 is compressed, and after the opening rotation is completed, the return spring 454 provides a return force. The lower part of the partition board 11 is provided with a threading hole 113, the threading hole 113 is used for a lead of the current transformer 27 to pass through, the lead of the current transformer 27 passes through the threading hole 113 to be connected with the circuit board 4, the lead is used for feeding back a current signal of a main circuit to a controller of the circuit board 41, and the partition board 11 is also provided with a hole for the L-pole spring 28 to pass through.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (10)

1. The utility model provides a compact reclosing circuit breaker, includes casing (1) be provided with L looks utmost point module (2) and N looks utmost point module (3) side by side in casing (1) the both sides of N looks utmost point module (3) are equipped with N utmost point incoming line terminal (311) and N utmost point outgoing lines terminal (312), its characterized in that: a reclosing module (4) and an N-pole contact mechanism (32) are arranged between the N-pole inlet terminal (311) and the N-pole outlet terminal (312), the reclosing module (4) comprises a circuit board (41) and a driving device connected with the circuit board (41), the driving device is arranged on the circuit board (41) in a laminated manner and is in linkage connection with the L-phase pole module (2), an N-pole contact mechanism (32) is stacked on the lower part of the circuit board (41), the N-pole contact mechanism (32) comprises an N-pole static contact and an N-pole moving contact (321) which are matched with each other, the N-pole static contact comprises an N-pole static contact plate (322), the N-pole static contact plate (322) is arranged along the space between the side edge of the bottom of the circuit board (41) and the side wall of the bottom in the shell (1), one end of the N-pole static contact plate (322) is connected with the N-pole outgoing line terminal (312), and the other end of the N-pole static contact plate (322) is provided with an N-pole static contact (323) matched with the N-pole moving contact (321).

2. The compact reclosing circuit breaker of claim 1, further comprising: be provided with limiting plate (3312) in casing (1), limiting plate (3312) and the cooperation of casing (1) inner wall of N utmost point module (3) lower part form striking runway (331b), and the setting of striking runway (331b) is followed to the utmost point stationary contact board (322) of N.

3. The compact reclosing circuit breaker of claim 1, further comprising: and a static contact arc striking plate (324) is arranged at one end of the N-pole static contact plate (322) provided with the N-pole static contact (323), and the static contact arc striking plate (324) is positioned below the N-pole static contact (323).

4. The compact reclosing circuit breaker of claim 1, further comprising: the novel LED lamp is characterized in that a partition plate (11) is arranged in the shell (1), the partition plate (11) divides the space in the shell (1) into two chambers, one chamber is used for installing the L-phase pole module (2), the other chamber is used for installing the N-phase pole module (3), and the circuit board (41) is arranged on one side of the partition plate (11) and is located in the cavity for installing the N-phase pole module (3).

5. The compact reclosing circuit breaker of claim 1, further comprising: the N-pole contact mechanism (32) further comprises an N-pole contact spring electrically connected with the N-pole moving contact (321), and a first arc ignition plate (261) and an L-pole spring (28) electrically connected with the first arc ignition plate (261) are arranged in the L-phase pole module (2); be equipped with the post of getting electricity (411) in one side of circuit board (41), the post of getting electricity (411) is connected with N utmost point contact spring and is used for realizing the N utmost point of circuit board (41) and gets the electricity, is equipped with the pad at the opposite side of circuit board (41), the pad is connected with L utmost point spring (28) and is realized the L utmost point of circuit board (41) and get the electricity.

6. The compact reclosing circuit breaker of claim 5, wherein: the N-pole contact spring comprises a first spring (3211) and a second spring (3212), one end of the first spring (3211) is connected with a power taking column (411) of the circuit board (41), the other end of the first spring (3211) and one end of the second spring (3212) are connected to a conductive shaft in the N-pole module (3), and the other end of the second spring (3212) is connected with the N-pole moving contact (321).

7. The compact reclosing circuit breaker of claim 1, further comprising: an N-pole inlet terminal (311) and an N-pole outlet terminal (312) are respectively arranged on two sides of the N-phase pole module (3), a separation plate (33) is arranged between the N-pole contact mechanism (32) and the circuit board (41), the separation plate (33) is arranged close to the N-pole inlet terminal (311), and an arc leading groove (331a) is formed in the position, corresponding to the N-pole moving contact (321), of the separation plate (33).

8. The compact reclosing circuit breaker of claim 7, wherein: the isolation plate (33) comprises a second isolation part (332), and an installation groove for installing the N-pole wire inlet terminal (311) is formed in the second isolation part (332).

9. The compact reclosing circuit breaker of claim 1, further comprising: the driving device comprises a driving handle (42), a gear transmission mechanism (43), a driving structure and a motor (44), the driving handle is in linkage connection with a handle structure (21) of the L-phase pole module (2), the motor (44) is meshed with the gear transmission mechanism (43), the driving structure comprises a closing driving part (451) arranged on the gear transmission mechanism (43), the closing driving part (451) is matched with the driving handle (42), the driving motor (44) rotates after a controller of a circuit board (41) receives a closing signal, and the closing driving part (451) enables the driving handle (42) to drive the handle structure (21) to rotate in a closing direction along with the rotation of the gear transmission mechanism (43).

10. The compact reclosing circuit breaker of claim 1, further comprising: the driving device comprises a gear transmission mechanism (43), a driving structure and a motor (44), the motor (44) is meshed with the gear transmission mechanism (43), the driving structure comprises a brake separating driving part (452) arranged on the gear transmission mechanism (43) and a brake separating rocker arm (453) rotatably installed in the N-phase pole module (3), the motor (44) is driven to rotate after a controller of the circuit board (41) receives a brake separating signal, the brake separating driving part (452) is matched with the brake separating rocker arm (453) to enable the brake separating rocker arm (453) to rotate along with the rotation of the gear transmission mechanism (43), and the brake separating rocker arm (453) drives an operating mechanism (23) of the L-phase pole module (2) to act to enable the circuit breaker to be separated; the operating mechanism (23) of the L-phase pole module (2) comprises a support, a lever, a jump buckle, a lock catch and a contact support, the support is rotatably installed in the L-phase pole module (2), the jump buckle and the lock catch are rotatably installed on the support, the contact support is connected to the support, one end of the lever is connected with the handle structure (21), the other end of the lever is connected with the jump buckle, the jump buckle is connected with an end arm hasp of the lock catch, one end of the contact support is connected with the L-pole moving contact, an assembly hole is formed in the lock catch, a lock catch linkage shaft (231) is installed in the assembly hole, the lock catch linkage shaft (231) extends into the N-phase pole module (3) to be matched with a brake separating rocker (453) and is used for unlocking the jump buckle structure of the jump buckle and the lock catch in the operating mechanism (23.

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