CN205177748U - Remote -control miniature circuit breaker - Google Patents

Abstract

The utility model provides a remote -control miniature circuit breaker, includes N unit, P unit and one end and the P electrification conducting rod of being connected in the unit that extremely opens circuit that extremely opens circuit that extremely opens circuit, N extremely opens circuit the unit including installing handle on its base, be used for the handle spring that the handle resets and install the control scheme board in the base, the handle spring establish ties in the circuit return circuit that supplies power for the control scheme board, the other end of conducting rod is connected with the one end of handle spring, the motion end of handle spring the other end contact and the switching on of separation circuit return circuit in combined floodgate and separating brake action and the circuit return circuit of handle are broken with dividing conveniently. The utility model discloses an on -off control for the circuit return circuit of control scheme board power supply is realized to the handle spring of N utmost point circuit breaker, and while open circuit return circuit when the circuit breaker breaks off guarantees that the load end of circuit breaker does not have induced voltage when the circuit breaker is threaded off, and security level is high, and compact structure, convenient assembling.

Description

Remote-control miniature circuit breaker

Technical field

The utility model belongs to Low Voltage Electrical Apparatus, relates to a kind of remote-control miniature circuit breaker, can be used in pre payment watthour meter and play Long-distance Control effect, be mainly used in the places such as industry, business, high level and residential houses.

Background technology

Remote-control miniature circuit breaker is the conventional one in miniature circuit breaker; it is with for the shunt release of Long-distance Control and wiring board; existing remote-control miniature circuit breaker mainly contains 1P+N and 3P+N; wherein P pole circuit breaker has overload and short-circuit protection function; the break-make of N pole breaker control zero line, the snap close in the circuit breaker of P pole is linked by the snap close in connecting axle and N pole circuit breaker.By the electrical connection of shunt release and control circuit board, remote-control miniature circuit breaker can control to realize time delay after shunt opening trip coil is connected by remote control signal and disconnects and reset.Under normal circumstances, P pole circuit breaker and N pole circuit breaker are two independently unit, and shunt release and control circuit board are arranged in the circuit breaker of N pole.Control circuit board needs power supply support, this power supply normally obtains from the terminal block of P pole circuit breaker (being called for short P pole), namely need between control circuit board with P pole to be connected by wire, also need to be connected by wire, with the electric power loop of formation control circuit board between control circuit board and the terminal block (being called for short N pole) of N pole circuit breaker simultaneously.Traditional remote-control miniature circuit breaker due between control circuit board and P pole without quarantine measures, control circuit board is connected with P pole (i.e. phase line) all the time, all the time electriferous state is in, in this case, when control circuit board adopts the structure be connected with the mains side of P pole, no matter circuit breaker is in combined floodgate, separating brake or which kind of state that trips, and control circuit board is charged all the time, thus there is potential safety hazard; When control circuit board adopts the structure be connected with the load-side of P pole, when circuit breaker tripping, the induced voltage of the load end of circuit breaker can impact destruction to control circuit board, thus causes the security performance of circuit breaker to be deteriorated.

The steel wire that current existing improvement project such as adopts an one end to be connected with control circuit board, between the moving contact termination of the other end of steel wire being extend into P pole circuit breaker and fixed contact, when P pole moving contact closes, moving contact contacts with the termination of steel wire, when the moving contact disjunction of P pole, moving contact is separated with the termination of steel wire.But owing to there is electric arc when moving contact disjunction big current (particularly short circuit current), it forms ablation to tiny steel wire end and threatens, and easily makes steel wire end produce the problem such as poor electric contact, damage, affects the security performance of circuit breaker.Another kind of existing improvement project such as increases auxiliary switch, because existing component is full of narrow space in miniature circuit breaker housing substantially, be difficult to solve the problems referred to above by additionally increasing device to tie up and change existing structure again, also make breaker structure more complicated, often cause the adaptation workload of original structure larger.

Summary of the invention

The purpose of this utility model is to provide the remote-control miniature circuit breaker that a kind of structure is simple, efficiency of assembling is high, cost is low.

For achieving the above object, the utility model have employed following technical scheme:

A kind of remote-control miniature circuit breaker, comprise N pole breaking units 10, the conducting rod 30 that P pole breaking units 20 is connected with the live part in P pole breaking units 20 with one end, N pole breaking units 10 comprises the handle 3 be arranged on its base 1, the handle spring 4 resetted for handle 3 and the control circuit board 7 be arranged in base 1, described handle spring 4 is connected in the circuit loop into control circuit board 7 power supply, the other end of conducting rod 30 is connected with one end of handle spring 4, the tache motorice 42 of described handle spring 4 to be contacting and separating the conducting in realizing circuit loop and disjunction with the combined floodgate of handle 3 and the other end of separating brake action and circuit loop.

Preferably, described N pole breaking units 10 also comprises the shell fragment 5 be electrically connected with control circuit board 7, the tache motorice 42 of described handle spring 4 and the end thereof contacts of shell fragment 5 and the conducting and the disjunction that are separated realizing circuit loop.

Preferably, described shell fragment 5 is L shape laminated structure; The base 1 of described N pole breaking units 10 is provided with boss 1b, described boss 1b is provided with the draw-in groove 1c of L shape for holding and fixedly mount shell fragment 5, the free end of shell fragment 5 stretches out tache motorice 42 resilient engagement of the outer and handle spring 4 of draw-in groove 1c.

Preferably, described handle spring 4 comprises suit spring body on the handle 3 40 and is positioned at the stiff end 41 at two ends and the tache motorice 42 of spring body 40, be electrically connected with conducting rod 30 in the base 1 that described stiff end 41 is fixed on N pole breaking units 10, described tache motorice 42 is connected with the handle 3 of N pole breaking units 10, and tache motorice 42 and handle 3 are linked the conducting in realizing circuit loop and disjunction.

Preferably, the shell fragment 5 of described N pole breaking units 10 is electrically connected with its control circuit board 7 by P polar conductor 6, and described control circuit board 7 is electrically connected with N pole terminal block 9N by N polar conductor 8; Described conducting rod 30 is electrically connected with the P pole terminal block 9P of P pole breaking units 20.

Preferably, described conducting rod 30 is zigzag structure, comprise shaft 33 and be positioned at P extreme 31 and the N extreme 32 at shaft 33 two ends, described N extreme 32 is connected with the stiff end 41 of the handle spring 4 in N pole breaking units 10, and described P extreme 31 is connected with the live part in P pole breaking units 20.

Preferably, the base 1 of described N pole breaking units 10 is provided with protruding sidewall 1a and the first through hole 11, described protruding sidewall 1a is close to, to ensure that the stiff end 41 of handle spring 4 can be pressed in extreme for the N of conducting rod 30 32 on described protruding sidewall 1a by means of the elastic force of handle spring 4 after extreme 32 these first through holes 11 of insertion of N of conducting rod 30.

Preferably, the base 1 of described N pole breaking units 10 is provided with protruding sidewall 1a and ride be arranged on protruding sidewall 1a and base 1 intersecting lens on the first through hole 11, the stiff end 41 of described handle spring 4 can be squeezed out in the process of the N of conducting rod 30 extreme 32 from outer insertion first through hole 11, be connected with the compression forming plug type between stiff end 41 to make N extreme 32, and, the stiff end 41 of described handle spring 4 is close on protruding sidewall 1a while location, can shield portions first through hole 11.

Preferably, the base 1 of described N pole breaking units 10 is provided with the first through hole 11, the cap 2 of described P pole breaking units 20 is provided with the second through hole 22, base 1 between N pole breaking units 10 and P pole breaking units 20 and/or cap 2 are provided with and bury groove 22, the shaft 33 of described conducting rod 30 is arranged on this and buries in groove 22, the N extreme 32 of conducting rod 30 is connected with the stiff end 41 of handle spring 4 through the first through hole 11, and the P extreme 31 of conducting rod 30 is connected with the live part in P pole breaking units 20 through the second through hole 22.

Preferably, the P extreme 31 of described conducting rod 30 adopts plug type syndeton with the connection of the live part in described P pole breaking units 20.

Remote-control miniature circuit breaker of the present utility model is by being connected to the handle spring of conducting rod between N pole breaking units and P pole breaking units and N pole circuit breaker, the break-make realizing the circuit loop of powering to the control circuit board in the circuit breaker of N pole controls, the connection in open circuit loop while that this structure being when circuit breaker disconnects, ensure load end non-inductive voltage when circuit breaker tripping of circuit breaker, safe class is high, it also avoid external cabling simultaneously, without the need to by additionally increasing device to tie up and changing existing structure, compact conformation, novel in design, easy to assembly.The utility model is ingenious make use of original handle spring resetted for circuit breaker handle, be connected in series in the circuit between P pole terminal block 9P and control circuit board 7, and the tache motorice of handle spring be configured to the structure of the dynamic contravention being used for the on/off performing circuit.Adopt the structures such as the shell fragment matched with this handle spring in addition, can the reliably conducting in realizing circuit loop and disjunction, and make the position performing conducting and disjunction away from arc region, thus can effectively prevent electric arc to the ablative degradation of part participating in conducting and disjunction, and when circuit breaker tripping, the non-inductive voltage of load end of circuit breaker, effectively improve security performance and the useful life of product, further, after improving, structure is easy to processing and assembling, and has good economy.

Accompanying drawing explanation

Fig. 1 is the overall structure block diagram of the embodiment of remote-control miniature circuit breaker of the present utility model.

Fig. 2 is the concrete structure schematic diagram of the N pole breaking units 10 in the remote-control miniature circuit breaker of the present utility model shown in Fig. 1.

Fig. 3 is the concrete structure schematic diagram of the P pole breaking units 20 in the remote-control miniature circuit breaker of the present utility model shown in Fig. 1.

Fig. 4 shows the A partial enlarged drawing of Fig. 2 of shell fragment 5 and mounting structure thereof.

Fig. 5 is the B partial enlarged drawing of Fig. 2, and the N in figure extreme 32 is in insert state.

Fig. 6 is the schematic diagram of the plug type syndeton under another operating state of Fig. 5, and the N in figure extreme 32 is in the state of extracting.

Fig. 7 is the concrete structure schematic diagram of the handle spring 4 in the embodiment of the remote-control miniature circuit breaker of the present utility model shown in Fig. 1.

Fig. 8 is the concrete structure schematic diagram of the conducting rod 30 in the remote-control miniature circuit breaker of the present utility model shown in Fig. 1.

Fig. 9 is the overall structure block diagram of the second embodiment of remote-control miniature circuit breaker of the present utility model, adopt the tache motorice 42 of the handle spring 4 of N pole breaking units 10 to close the/organization plan that coordinates of disjunction with the N of conducting rod 30 extreme 32, realize controlling the on/off of the P pole power supply of control circuit board 7.

Figure 10 is the overall structure block diagram of the 3rd embodiment of remote-control miniature circuit breaker of the present utility model, adopt the tache motorice 42P of the handle spring 4P of P pole breaking units 20 to close the/organization plan that coordinates of disjunction with the P of conducting rod 30 extreme 31, realize controlling the on/off of the P pole power supply of control circuit board 7.

Figure 11 is the overall structure block diagram of the 4th embodiment of remote-control miniature circuit breaker of the present utility model, adopt double breaking points, namely tache motorice 42 and the N of conducting rod 30 extreme 32 of the handle spring 4 of N pole breaking units 10 closed/disjunction coordinates, simultaneously the tache motorice 42P of the handle spring 4P of P pole breaking units 20 closes the/organization plan that coordinates of disjunction with the P of conducting rod 30 extreme 31, realizes controlling the on/off of the P pole power supply of control circuit board 7.

Embodiment

Below in conjunction with the various embodiments that accompanying drawing 1 to 11 provides, further illustrate the embodiment of remote-control miniature circuit breaker of the present utility model.

A kind of circuit breaker of the present utility model, the handle spring 4 comprising handle 3 and reset for handle 3, described handle spring 4 is connected in a circuit loop of circuit breaker, one end of handle spring 4 is connected with one end of circuit loop, and the tache motorice 42 of described handle spring 4 to be contacting and separating the conducting in realizing circuit loop and disjunction with the combined floodgate of handle and the other end of separating brake action and circuit loop.Also comprise be connected on coordinate with handle spring 4 in circuit loop shell fragment 5, one end of shell fragment 5 and circuit loop the other end be connected, the tache motorice 42 of described handle spring 4 to be contacting and separating the conducting in realizing circuit loop and disjunction with the other end of shell fragment 5 with the combined floodgate of handle 3 and separating brake action.Circuit breaker of the present utility model is ingenious make use of original handle spring resetted for circuit breaker handle, be connected in series in a circuit loop of circuit breaker, the tache motorice of handle spring is used for the structure performing the conducting of circuit and the dynamic contravention of disjunction, structure is simple, design ingenious and cost is low.And the elastic piece structure by matching with handle spring, can the reliably conducting in realizing circuit loop and disjunction, play overtravel protection effect.The utility model utilizes original handle spring for circuit breaker handle reset to realize circuit loop scheme in circuit breaker, may be used for having in the remote-control miniature circuit breaker of N pole breaking units and P pole breaking units, also may be used for the circuit breaker with shunt release, in the circuit breakers such as residual current circuit breaker, may be used in the circuit loop such as control circuit loop and power supply circuits loop in circuit breaker.

See Fig. 1, the overall structure block diagram of the embodiment of remote-control miniature circuit breaker of the present utility model, remote-control miniature circuit breaker comprises the N pole breaking units 10 being provided with control circuit board 7, P pole breaking units 20, N pole breaking units 10 is for controlling the break-make of the neutral line of main circuit (not shown), P pole breaking units 20 is for controlling the break-make of the phase line of main circuit, N pole breaking units 10 and P pole breaking units 20 also comprise the parts of other routine, as the handle spring 4 etc. resetted for handle 3, their function and structure is known, the parts that wherein the utility model does not relate to repeat no more.Described control circuit board 7 is electrically connected with the N pole terminal block 9N in N pole breaking units 10, and is electrically connected with the P pole terminal block 9P in P pole breaking units 20 circuit loop being formed as control circuit board 7 and powering by handle spring 4 and conducting rod 30; The handle spring 4 of N pole breaking units 10 is connected in the circuit between conducting rod 30 and control circuit board 7, conducting rod 30 one end is connected with the P pole terminal block 9P in P pole breaking units 20, the other end is connected with one end of handle spring 4, and the tache motorice 42 of described handle spring 4 to be contacting and separating the conducting of the circuit loop realizing control circuit board 7 and disjunction with the combined floodgate of handle 3 and the other end of separating brake action and circuit loop.N pole terminal block 9N is that the power supply N of circuit loop is extreme, and P pole terminal block 9P is that the power supply P of circuit loop is extreme, and N pole terminal block 9N and P pole terminal block 9P can also be other live part in N pole breaking units 10 and P pole breaking units 20 respectively.The former handle spring 4 resetted for handle 3 is connected in series in the circuit between P pole power supply (terminal block 9P) and the control circuit board 7 of N pole breaking units 10 by the utility model, and the tache motorice of handle spring is configured to the dynamic contravention structure of conducting for performing circuit and disjunction, ensure control circuit board non-inductive voltage when circuit breaker tripping, safe class is high, and compact conformation, easy to assembly.

Described N pole breaking units 10 also comprises the shell fragment 5 coordinated with handle spring 4, it is electrically connected with described control circuit board 7, the stiff end 41 of described handle spring 4 is connected with conducting rod 30, and the tache motorice 42 of described handle spring 4 to be contacting and separating the conducting in realizing circuit loop and disjunction with the combined floodgate of handle 3 and separating brake action and shell fragment 5.Illustrate in Fig. 1 that the tache motorice 42 of the handle spring 4 in remote-control miniature circuit breaker of the present utility model and shell fragment 5 are contacting and separating the structure coordinated, and it is for the operation principle of the on/off in control circuit loop, the difference of the handle spring of it and existing circuit breaker is: the handle spring in existing miniature circuit breaker is only for the reset of handle, be not used in electrical connection, and handle spring of the present utility model, not only for the reset of handle 3, but also for electrical connection, particularly also there is the structure of dynamic contravention, the function of the on/off in control circuit loop can be had concurrently.

The 26S Proteasome Structure and Function of handle spring for convenience of description, the handle spring of N pole breaking units 10 is labeled as handle spring 4 below, and the handle spring of P pole breaking units 20 is labeled as handle spring 4P.Handle spring 4 is as shown in Figure 7 torsion spring, comprises spring body 40 and is positioned at the stiff end 41 at two ends and the tache motorice 42 of spring body 40; Spring body 40 is sleeved on the handle 3 of N pole breaking units 10, stiff end 41 is connected with the base 1 of N pole breaking units 10, tache motorice 42 is connected with described handle 3, this connection makes tache motorice 42 and handle 3 link, this interlock be configured to make tache motorice 42 have as the moving contact that people are familiar with closed/function of disjunction action, and be defined as dynamic contravention through the tache motorice 42 of this configuration.Similar, the handle spring 4P of P pole breaking units 20 comprises spring body 40P, stiff end 41P and tache motorice 42P; Spring body 40P is sleeved in the handle (not shown) of P pole breaking units 20, stiff end 41P is connected with the base (not shown) of P pole breaking units 20, tache motorice 42P is connected with described handle, and this connection makes tache motorice 42P and handle to link the conducting in realizing circuit loop and disjunction.

The such structure of the fixed contact that/similar people that disjunction coordinate closed with described dynamic contravention (tache motorice of handle spring) are familiar with is another useful feature of the present utility model, and certain this structure can have kinds of schemes.A kind of preferred mode is as shown in Figure 2,4: the base 1 of described N pole breaking units 10 is provided with boss 1b, boss 1b is provided with draw-in groove 1c; One end of shell fragment 5 is fixedly mounted in draw-in groove 1c, and the other end of shell fragment 5 is free end, and this free end is for coordinating the conducting and disjunction (see Fig. 1) that realize electric power loop with the tache motorice 42 of handle spring 4.More specifically preferred structure as: as described in shell fragment 5 be L shape laminated structure; The base 1 of N pole breaking units 10 is provided with the draw-in groove 1c of corresponding L shape; The shell fragment 5 of L shape is fixed in draw-in groove 1c, and the free end of shell fragment 5 stretches out outside draw-in groove 1c and tache motorice 42 resilient engagement of handle spring 4.P polar conductor 6 penetrates the electrical connection being fixedly connected with shell fragment 5 in boss 1b and realizing shell fragment 5 and control circuit board 7; Described control circuit board 7 also realizes being electrically connected with N pole terminal block 9N by N polar conductor 8.Shell fragment is used to coordinate the reliability that effectively can improve circuit loop with the tache motorice 42 of handle spring 4, increase the service life, the tache motorice 42 of certain handle spring 4 can also and other mechanism coordinate realizing circuit loop closed/disjunction, introduce in other embodiment follow-up.

As shown in Figure 8, described conducting rod 30 is zigzag structure, it comprise shaft 33, shaft 33 two ends extreme with the vertically disposed P of shaft 33 extreme 31 and N; N extreme 32 and the electrical connector in N pole breaking units 10, as extreme in N 32 are connected with the stiff end 41 of the handle spring 4 in N pole breaking units 10, and P extreme 31 is connected with the live part (for illustrating in figure) in P pole breaking units 20.Should understand, described live part can be the various components with phases line voltage, P pole terminal block 9P as depicted in figs. 1 and 2.The mounting structure of conducting rod 30 is as shown in Figures 1 to 6: the cap 2 base 1 of described N pole breaking units 10 being provided with the first through hole 11, P pole breaking units 20 is provided with the second through hole 22, base 1 and/or cap 2 is provided with and buries groove 22; The shaft 33 of conducting rod 30 is arranged on and buries in groove 22 between N pole breaking units 10 and P pole breaking units 20, realizes closing fixing.Specifically, the N extreme 32 of conducting rod 30 is through the electrical connector after the first through hole 11 and in N pole breaking units 10, stiff end 41 as handle spring 4 connects, and the P extreme 31 of conducting rod 30 is connected with the live part in P pole breaking units 20 through after the second through hole 22.This structure of conducting rod 30, its advantage is, conducting rod 30 is made to realize in-site installation, the N pole breaking units 10 of different model can be matched with the P pole breaking units 20 realizing a kind of model, elected when wearing the N pole breaking units 10 of shunt release, conducting rod 30 can being installed, when matching the N pole breaking units 10 not with shunt release, filling conducting rod 30.Based on this functional requirement, need to following about the syndeton between the live part in N pole breaking units 10 and P pole breaking units 20 and conducting rod 30, the optimal design of electing property.

Another useful feature of the present utility model is, described conducting rod 30 is grafting with the connection of handle spring, that is: the plug-in between conducting rod 30 and the stiff end 41 of handle spring 4 is connected; Or the P of conducting rod 30 extreme 31 is that plug-in connects with the connection of P pole breaking units 20.Conducting rod 30 can have multiple implementation with the connected structure of handle spring, the embodiment of preferred mode as shown in Fig. 2, Fig. 5, Fig. 6: as described in base 1 on be provided with a protruding sidewall 1a, and ride be arranged on protruding sidewall 1a and base 1 intersecting lens on the first through hole 11; The stiff end 41 of handle spring 4 is close on protruding sidewall 1a, can also shield portions first through hole 11 while realizing its location; In the process of the N of conducting rod 30 extreme 32 from outer insertion first through hole 11, stiff end 41 is opened in extreme 32 exclusions of N, is connected with the compression forming plug type between stiff end 41 to make N extreme 32.Certainly, the P extreme 31 that said structure mode is also applicable to conducting rod 30 is connected with the plug-in of the stiff end 41P of the handle spring 41P of P pole breaking units 20.Plug-in connects the assembling aspect very making conducting rod 30, carries out plug-in as required and installs.

The P extreme 31 of described conducting rod 30 also can adopt grafting with the connection of the P pole terminal block 9P of P pole breaking units 20, and namely plug-in connects.Embodiment as shown in Fig. 1, Fig. 9, there is structure can the having multiple of P extreme 31 and the terminal block 9P grafting of P pole, any one known mode can be adopted to realize, and in like manner, it is also to adopt plug-in to connect that the P extreme 31 of conducting rod 30 is connected with other live part of P pole breaking units 20.In the 3rd embodiment as shown in Figure 10, to be connected with control circuit board 7 at the N of conducting rod 30 extreme 32 and to make also can adopt connected structure, a kind of preferred scheme as: as described in control circuit board 7 on be provided with the sleeve (not shown) of electrical connection, the N extreme 32 of conducting rod 30 coordinates with described sleeve grafting, and namely N extreme 32 realizes plug type electrical connection in the mode inserting described sleeve.

The embodiment that the handle spring of remote-control miniature circuit breaker is connected in series in the circuit loop that control circuit board 7 powers by the utility model has multiple, as shown in the second embodiment that Fig. 9 provides: as described in handle spring be the handle spring 4 resetted for handle of N pole breaking units 10; Handle spring 4 is connected in the electric power loop of control circuit board 7, and the stiff end 41 of handle spring 4 is connected with control circuit board 7 by the first wire 6a, and control circuit board 7 is electrically connected with N pole terminal block 9N (power supply N is extreme) by N polar conductor 8; The P extreme 31 of conducting rod 30 is electrically connected with P pole terminal block 9P (power supply P is extreme), the tache motorice 42 of handle spring 4 is contacting and separating with the combined floodgate of circuit breaker and the N extreme 32 of sub-switching operation and conducting rod 30, and (that is: when handle 3 is in closing position, tache motorice 42 contacts with N extreme 32 for the conducting in realizing circuit loop and disjunction; When handle 3 is in separating brake or trip position, tache motorice 42 is separated with N extreme 32).Because tache motorice 42 and N extreme 32 are away from the moving contact (not shown) in N pole breaking units 10 and fixed contact (not shown), therefore can effectively avoid the electric arc that produces when moving contact disjunction big current for the destruction of tache motorice 42 with N extreme 32, can effectively guarantee between tache motorice 42 and N extreme 32 closed/electric property of disjunction and useful life.

As shown in the 3rd embodiment that Figure 10 provides: as described in handle spring be P pole breaking units 20 for handle reset P pole handle spring 4P, described P pole handle spring 4P is connected in the electric power loop of control circuit board 7; ; Control circuit board 7 is connected with N pole terminal block 9N by N polar conductor 8, the N extreme 32 of conducting rod 30 is connected with control circuit board 7, the stiff end 41P of handle spring 4P is connected with P pole terminal block 9P by the second wire 6b, the tache motorice 42P of handle spring 4P is contacting and separating with the combined floodgate of the handle (not shown) of P pole breaking units 20 and the P extreme 31 of sub-switching operation and conducting rod 30, the conducting in realizing circuit loop and disjunction.That is: when the handle of P pole breaking units 20 is in closing position, tache motorice 42P and P extreme 31 closes; When described handle is in separating brake or trip position, extreme 31 disjunctions of tache motorice 42P and P.Because tache motorice 42P and P extreme 31 is away from the moving contact in P pole breaking units 20 and fixed contact (see Fig. 5), therefore can effectively avoid the electric arc that produces when moving contact disjunction big current for the destruction of tache motorice 42P and P extreme 31, can effectively guarantee between tache motorice 42P and P extreme 31 closed/electric property of disjunction and useful life.

A kind of structure of double breaking points as shown in the 4th embodiment that Figure 11 provides: as described in handle spring be N pole breaking units 10 for handle reset handle spring 4 and P pole breaking units 20 for handle reset P pole handle spring 4P; Described handle spring 4 is connected in the electric power loop of control circuit board 7, and P pole handle spring 4P is also connected in the electric power loop of control circuit board 7; The stiff end 41 of handle spring 4 is connected with control circuit board 7 by the first wire 6a, control circuit board 7 is connected with N pole terminal block 9N by N polar conductor 8, and the stiff end 41P of handle spring 4P is connected with the P pole terminal block 9P of P pole breaking units 20 by the second wire 6b; The tache motorice 42 of the handle spring 4 of N pole breaking units 10 is contacting and separating with the combined floodgate of handle 3 and the N extreme 32 of sub-switching operation and conducting rod 30, the tache motorice 42P of the handle spring 4P of P pole breaking units 20 is contacting and separating with the combined floodgate of the handle (not shown) of P pole breaking units 20 and the P extreme 31 of sub-switching operation and conducting rod 30 simultaneously, the conducting in realizing circuit loop and disjunction.Obviously, because the handle 3 of N pole breaking units 10 and the handle of P pole breaking units 20 link, so: when the handle 3 of N pole breaking units 10 is in closing position, the handle of P pole breaking units 20 is also in closing position, the tache motorice 42 of N pole breaking units 10 closes with N extreme 32, and tache motorice 42P and the P extreme 31 of P pole breaking units 20 closes simultaneously; When the handle 3 of N pole breaking units 10 is in separating brake or trip position, the handle of P pole breaking units 20 is also in separating brake or trip position, tache motorice 42 and extreme 32 disjunctions of N of N pole breaking units 10, simultaneously extreme 31 disjunctions of tache motorice 42P and P of P pole breaking units 20.Because the tache motorice 42 of N pole breaking units 10 and N extreme 32 are away from the moving contact in N pole breaking units 10 and fixed contact (see Fig. 5), therefore can effectively avoid the electric arc that produces when moving contact disjunction big current for the destruction of tache motorice 42 with N extreme 32, can effectively guarantee between tache motorice 42 and N extreme 32 closed/electric property of disjunction and useful life; Simultaneously, because tache motorice 42P and P extreme 31 of P pole breaking units 20 is away from the moving contact (not shown) in P pole breaking units 20 and fixed contact (not shown), therefore can effectively avoid the electric arc that produces when moving contact disjunction big current for the destruction of tache motorice 42P and P extreme 31, can effectively guarantee between tache motorice 42P and P extreme 31 closed/electric property of disjunction and useful life.

Another useful feature of the present utility model is, described conducting rod 30 is as an electric-conductor of double breaking points, simultaneously with the handle spring 4 of N pole breaking units 10 and the handle spring 4P of P pole breaking units 20 closed/disjunction coordinates (the 4th embodiment as shown in figure 11), the advantage of this structure is, the plug-in structure of conducting rod 30 is very simple, the easy to operate of conducting rod 30 is installed, only need do following configuration: by a correct position (during combined floodgate settling position) in the stroke of the tache motorice 42 of the position alignment handle spring 4 of the first through hole 11 on the base 1 of N pole breaking units 10, close with the N extreme 32 of the conducting rod 30 inserted in the first through hole 11 to make the tache motorice 42 when closing a floodgate, and the tache motorice 42 when separating brake or tripping operation is separated with the N extreme 32 of the conducting rod 30 in insertion first through hole 11, simultaneously, by a correct position (during combined floodgate settling position) in the stroke of the tache motorice 42P of the position alignment handle spring 4P of the second through hole 21 on P pole breaking units 10, to make the tache motorice 42P when closing a floodgate close with the P extreme 31 of the conducting rod 30 inserted in the second through hole 21, and the tache motorice 42P when separating brake or tripping operation is separated with the P extreme 31 of the conducting rod 30 in insertion second through hole 21.

Another structural design involved by feature forming path and open circuit in circuit between the control circuit board that the utility model adopts handle spring to be connected in series in P pole circuit breaker and N pole circuit breaker is exactly the electric connection structure of the stiff end of handle spring, this structure comprises two kinds of execution modes: a kind of mode is foregoing connected structure, it needs the connector as conducting rod 30, this connector will have good rigidity, otherwise cannot realize grafting; Another kind is the electric connection structure of non-plug-in type, it to connector if the rigidity of plain conductor is without the need to particular requirement.In the electric connection structure adopting non-plug-in type, pipe connections is not conducting rod 30 or other (the first wire 6a in the 4th embodiment provided of the second embodiment provided as Fig. 9 and Figure 11, the second wire 6b in the 3rd embodiment provided of Figure 10), a kind of available structure adopts as follows: the structure be connected between the N extreme 32 of described conducting rod 30 and the stiff end 41 of handle spring 4, comprise be arranged on N pole breaking units 10 base 1 on protruding sidewall 1a and the first through hole 11, described protruding sidewall 1a is close to after N extreme 32 inserts the first through hole 11, and, stiff end 41 is pressed in extreme for N 32 on protruding sidewall 1a by means of the elastic force of handle spring 4.Obviously, the elastic force of this structure handle spring 4, as the contact of electrical connection, has the advantages that structure is simple, easy to assembly.Because the first wire 6a and the other end of the second wire 6b also need with other component (as control circuit board 7 or P pole terminal block 9P are connected, therefore for convenience of assembling, optional by following syndeton mode: the stiff end 41 of described handle spring or 41P) and electric connection structure between the first wire 6a or the second wire 6b, comprise the sleeve (not shown) be connected on the first wire 6a or the second wire 6b, it is sleeved on stiff end, to realize the electrical connection between sleeve and stiff end 41 or 41P.First wire 6a or the second wire 6b can adopt with the connection between sleeve and weld or integrated formed structure, and under the elastic force effect of handle spring, described sleeve structure can obtain good electrical connection properties and install the reliability of location.

Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.

Claims (10)

1. a remote-control miniature circuit breaker, comprise N pole breaking units (10), the conducting rod (30) that P pole breaking units (20) is connected with the live part in P pole breaking units (20) with one end, N pole breaking units (10) comprises the handle (3) be arranged on its base (1), the handle spring (4) resetted for handle (3) and the control circuit board (7) be arranged in base (1), it is characterized in that: described handle spring (4) is connected in the circuit loop of powering for control circuit board (7), the other end of conducting rod (30) is connected with one end of handle spring (4), the tache motorice (42) of described handle spring (4) to be contacting and separating the conducting in realizing circuit loop and disjunction with the combined floodgate of handle (3) and the other end of separating brake action and circuit loop.

2. remote-control miniature circuit breaker according to claim 1, it is characterized in that: described N pole breaking units (10) also comprises the shell fragment (5) be electrically connected with control circuit board (7), the tache motorice (42) of described handle spring (4) and the end thereof contacts of shell fragment (5) and the conducting and the disjunction that are separated realizing circuit loop.

3. remote-control miniature circuit breaker according to claim 2, is characterized in that: described shell fragment (5) is L shape laminated structure; The base (1) of described N pole breaking units (10) is provided with boss (1b), described boss (1b) is provided with for holding and the draw-in groove (1c) of L shape of fixed installation shell fragment (5), the free end of shell fragment (5) stretch out draw-in groove (1c) outward with tache motorice (42) resilient engagement of handle spring (4).

4. remote-control miniature circuit breaker according to claim 1, it is characterized in that: described handle spring (4) comprises stiff end (41) and the tache motorice (42) at the spring body (40) be sleeved on handle (3) and the two ends being positioned at spring body (40), be electrically connected with conducting rod (30) in the base (1) that described stiff end (41) is fixed on N pole breaking units (10), described tache motorice (42) is connected with the handle (3) of N pole breaking units (10), tache motorice (42) and handle (3) are linked the conducting in realizing circuit loop and disjunction.

5. remote-control miniature circuit breaker according to claim 2, it is characterized in that: the shell fragment (5) of described N pole breaking units (10) is electrically connected with its control circuit board (7) by P polar conductor (6), described control circuit board (7) is electrically connected with N pole terminal block (9N) by N polar conductor (8); Described conducting rod (30) is electrically connected with P pole terminal block (9P) of P pole breaking units (20).

6. remote-control miniature circuit breaker according to claim 1, it is characterized in that: described conducting rod (30) is zigzag structure, comprise shaft (33) and be positioned at P extreme (31) and the N extreme (32) at shaft (33) two ends, described N extreme (32) is connected with the stiff end (41) of the handle spring (4) in N pole breaking units (10), and described P extreme (31) is connected with the live part in P pole breaking units (20).

7. the remote-control miniature circuit breaker according to claim 1 or 6, it is characterized in that: the base (1) of described N pole breaking units (10) is provided with protruding sidewall (1a) and the first through hole (11), described protruding sidewall (1a) is close to, to ensure that the N of conducting rod (30) extreme (32) can be pressed on described protruding sidewall (1a) by means of the elastic force of handle spring (4) by the stiff end (41) of handle spring (4) after the N of conducting rod (30) extreme (32) inserts this first through hole (11).

8. the remote-control miniature circuit breaker according to claim 1 or 6, it is characterized in that: the base (1) of described N pole breaking units (10) is provided with protruding sidewall (1a) and rides the first through hole (11) on the intersecting lens being arranged on protruding sidewall (1a) and base (1), the stiff end (41) of described handle spring (4) can be squeezed out from the process of outer insertion first through hole (11) at the N extreme (32) of conducting rod (30), be connected with the compression making N extremely form plug type between (32) with stiff end (41), and, while the stiff end (41) of described handle spring (4) is close to and protruding sidewall (1a) is located, can shield portions first through hole (11).

9. the remote-control miniature circuit breaker according to claim 1 or 6, it is characterized in that: the base (1) of described N pole breaking units (10) is provided with the first through hole (11), the cap (2) of described P pole breaking units (20) is provided with the second through hole (22), base (1) between N pole breaking units (10) and P pole breaking units (20) and/or cap (2) are provided with and bury groove (22), the shaft (33) of described conducting rod (30) is arranged on this and buries in groove (22), the N extreme (32) of conducting rod (30) is connected with the stiff end (41) of handle spring (4) through the first through hole (11), the P extreme (31) of conducting rod (30) is connected with the live part in P pole breaking units (20) through the second through hole (22).

10. remote-control miniature circuit breaker according to claim 9, is characterized in that: the P extreme (31) of described conducting rod (30) adopts plug type syndeton with the connection of the live part in described P pole breaking units (20).