CN217061946U - Earth leakage circuit breaker - Google Patents

Abstract

The utility model relates to the field of low-voltage apparatus, in particular to a leakage breaker, wherein a breaker phase pole and a leakage protection pole are respectively arranged at two sides of a shell; the leakage protection electrode comprises an electromagnetic leakage release and a transmission structure, and the leakage release is in driving fit with a phase electrode operating mechanism of a phase electrode of the circuit breaker through the transmission structure; the transmission structure comprises an indicating piece, a transmission piece and a resetting piece; when the leakage breaker is in a closing state and a leakage fault occurs, the ejector rod of the leakage release drives the transmission piece to act through the reset piece, the transmission piece drives the phase pole operating mechanism to release and simultaneously releases the limit fit with the indicating piece, and the indicating piece acts to an indicating position; after the electric leakage fault is eliminated, the external force drives the indicating piece to reset to the initial position, the indicating piece and the transmission piece recover the limit fit, and the reset piece drives the ejector rod to reset simultaneously; the leakage circuit breaker is simple in structure, and the shell can be used for the electronic leakage release at the same time.

Description

Earth leakage circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to leakage circuit breaker.

Background

The leakage circuit breaker is generally classified into an electronic type and an electromagnetic type:

the electronic leakage circuit breaker needs power supply voltage to provide power supply for the circuit board, and is usually related to the power supply voltage; the electromagnetic residual current circuit breaker does not need power supply voltage to supply power to a circuit board, namely, the electromagnetic residual current circuit breaker is irrelevant to the power supply voltage, and the electromagnetic residual current circuit breaker is complex in structure generally.

The existing residual current circuit breaker has the following defects:

1. the electromagnetic leakage circuit breaker has a complex reset structure for driving the ejector rod of the electromagnetic leakage release to reset, occupies a large space and is not beneficial to the miniaturization design of the leakage circuit breaker;

2. the electromagnetic leakage breaker and the electronic leakage breaker have poor structural universality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a residual current circuit breaker, its simple structure, the casing can be used for electronic type electric leakage release simultaneously.

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

an electric leakage circuit breaker comprises a shell, a breaker phase pole and an electric leakage protection pole, wherein the breaker phase pole and the electric leakage protection pole are arranged on two sides of the shell side by side; the circuit breaker phase pole comprises a phase pole operating mechanism and a phase pole contact system, the leakage protection pole comprises an electromagnetic leakage release and a transmission structure, and the leakage release is in driving fit with the phase pole operating mechanism through the transmission structure;

the transmission structure comprises an indicating piece, a transmission piece in limit fit with the indicating piece and a resetting piece;

when the leakage circuit breaker is in a closing state and a leakage fault occurs, a top rod of the leakage tripper drives a transmission piece to act through a resetting piece, the transmission piece drives a phase pole operating mechanism to trip and simultaneously releases the limit fit with an indicating piece, and the indicating piece acts to an indicating position; after the electric leakage fault is eliminated, the external force drives the indicating piece to reset to the initial position, and the indicating piece and the transmission piece recover the limiting fit and simultaneously drive the ejector rod to reset through the resetting piece.

Preferably, the indicator is slidably disposed on the housing.

Preferably, the indicator comprises an indicator body, and one end of the indicator body is an indicating end; when the indicating piece is positioned at the indicating position, the indicating end protrudes out of the shell; when the indicating piece is located at the initial position, the indicating end is submerged in the shell.

Preferably, the transmission structure further comprises an indicating member spring, and after the transmission member is disengaged from the indicating member in a limiting fit manner, the indicating member spring drives the indicating member to move to the indicating position.

Preferably, the indicating piece comprises an indicating piece driving part, and when the indicating piece resets to the initial position, the indicating piece driving part drives the ejector rod to reset through the resetting piece.

Preferably, the indicating piece comprises an indicating piece limiting part which is of an L-shaped structure, one arm of the L-shaped structure is connected with an indicating piece main body of the indicating piece, and the other arm of the L-shaped structure is in snap fit with the transmission piece and is perpendicular to the sliding direction of the indicating piece.

Preferably, the transmission member is rotatably disposed on the housing.

Preferably, the transmission member comprises a transmission member mounting part, a transmission member locking part and a transmission member transmission part, the transmission member is rotatably arranged on the shell through the transmission member mounting part, and the transmission member locking part and the transmission member transmission part are respectively connected with two radial ends of the transmission member mounting part; the transmission part locking part is in limit fit with the indicating part, and the transmission part is respectively matched with the reset part and the phase pole operating mechanism.

Preferably, driving medium transmission portion includes the driven portion of the driving medium and the driving medium drive division that set up side by side along the radial direction of driving medium installation department, and the driven portion of driving medium cooperates with the piece that resets, and driving medium drive division cooperates with looks utmost point operating device.

Preferably, the phase pole operating mechanism comprises a tripping piece and a locking piece which are matched with each other in a locking manner, and the locking piece is driven by external force to rotate so as to release the locking match with the tripping piece; the hasp spare includes hasp spare linkage post, and hasp spare linkage post passes the casing on the casing and dodges hole and driving medium cooperation.

Preferably, the reset piece is arranged on the shell in a sliding mode.

Preferably, the piece that resets includes the piece sliding part that resets and the piece transmission portion that resets, and the piece that resets slides through the piece sliding part that resets and sets up on the casing, and the piece transmission portion that resets cooperates with ejector pin and driving medium respectively.

Preferably, the transmission structure further comprises a return spring, and the return spring applies acting force to the return element to enable the return element to drive the transmission element to act.

Preferably, the housing comprises a housing guide rail structure which is in sliding guide limit fit with the resetting piece sliding part, and the resetting piece sliding part is arranged on the housing guide rail structure in a sliding manner.

Preferably, the housing guide rail structure includes a housing sliding groove, and the restoring member sliding portion is slidably disposed in the housing sliding grooves 2 to 4.

Preferably, the shell further comprises a reset spring cavity, the reset spring is arranged in the reset spring cavity, one end of the reset spring is matched with the side wall of the reset spring cavity, and the other end of the reset spring is matched with one end of the reset sliding part.

Preferably, one end of the reset member transmission part is matched with the transmission part and the ejector rod, and the other end of the reset member transmission part is connected with the reset member sliding part; reset a transmission portion and still cooperate with the indicator, when external force drive indicator resets to initial position, the indicator resets through a transmission portion drive that resets and resets a slip messenger resets a transmission portion drive ejector pin and resets.

Preferably, it is continuous and wholly is L shape structure to reset a sliding part and reset a transmission portion and bend, it includes the piece cooperation that resets and the sliding plate that resets that links to each other in proper order to reset a sliding part, it sets up on the casing through the sliding plate that resets to reset, it cooperates with the piece spring that resets of transmission structure to reset a cooperation of cooperation, it includes the piece driven protrusion that resets that links to each other in proper order to reset a transmission portion, it crosses the cab apron to reset, reset a dodge the portion and reset a drive plate, it still links to each other with the piece driven protrusion that resets, it is protruding to the indicator place side and cooperates with the indicator drive part of indicator to reset a driven protrusion, it dodges the groove including resetting the piece, it dodges the groove and corresponds the cooperation with the driving medium of driving medium to reset a drive plate, it cooperates with the driving medium transmission portion and the ejector pin of driving medium to reset a drive plate.

Preferably, the leakage protection pole further comprises a zero sequence current transformer, an N-pole moving contact and an N-pole static contact which are used in cooperation, and an N-pole operating mechanism; the N-pole operating mechanism is in driving connection with the phase pole operating mechanism and is in driving connection with the N-pole moving contact, the N-pole operating mechanism comprises an N-pole transmission rod linked with the phase pole operating mechanism, and the N-pole moving contact is connected with the N-pole transmission rod.

The utility model discloses a leakage circuit breaker, adopt the indicator to instruct the current state of leakage circuit breaker (whether for the tripping and separating brake state), more directly perceived; the indicating piece resets and drives the ejector rod of the leakage release to reset at the same time, so that the internal structure of the leakage circuit breaker is simplified, the internal installation space is saved, and the miniaturization development trend of the leakage circuit breaker is met; the circuit breaker phase pole and the leakage protection pole are respectively arranged on two sides of the shell, so that more installation space is provided for the leakage protection pole; therefore, the utility model discloses leakage circuit breaker can realize that electromagnetic type leakage circuit breaker is general with electronic type leakage circuit breaker's casing, reduces production part kind, does benefit to spare part warehouse material management.

In addition, in the leakage circuit breaker of the embodiment, when a leakage fault occurs, the spring of the reset piece applies a first acting force to the transmission piece through the reset piece, the ejector rod of the leakage release applies a second acting force to the transmission piece through the reset piece, and the first acting force and the second acting force act on the transmission piece together to enable the transmission piece to act, so that the action speed of the leakage circuit breaker when the leakage fault occurs is increased, the segmentation time is shortened, and the action reliability can be improved; moreover, due to the existence of the first acting force, the design requirement on the driving force of the leakage tripping device can be properly reduced; the magnitude of the first force may also be varied by varying the return spring.

Drawings

Fig. 1 is a schematic view of a projection structure of the leakage breaker of the present invention;

fig. 2 is a schematic diagram of the phase pole structure of the residual current circuit breaker of the present invention;

fig. 3 is a schematic structural diagram of the earth leakage protection electrode when the earth leakage circuit breaker of the present invention is in a closing state;

fig. 4 is a schematic structural view of the earth leakage protection electrode when the earth leakage circuit breaker of the present invention is in a tripping and opening state;

fig. 5 is a schematic structural view of the indicator of the present invention;

fig. 6 is a schematic structural view of the restoring member of the present invention;

FIG. 7 is a schematic structural view of the driving member of the present invention;

fig. 8 is a schematic structural diagram of the housing of the present invention.

Detailed Description

The following describes the embodiment of the residual current circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 8. The electrical leakage breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1 to 4, it is an embodiment of the leakage breaker of the present invention.

The residual current circuit breaker comprises a shell 2, a breaker phase pole and a residual current protection pole, wherein the breaker phase pole and the residual current protection pole are arranged on two sides of the shell 2 side by side; the circuit breaker phase pole comprises a phase pole operating mechanism 12 and a phase pole contact system, wherein the phase pole contact system comprises a phase pole moving contact 15 connected with the phase pole operating mechanism 12 in a driving mode and a phase pole fixed contact 16 matched with the phase pole moving contact 15 for use; the leakage protection electrode comprises a leakage release 9-0 and a transmission structure, and the leakage release 9-0 is in driving fit with the phase electrode operating mechanism 12 through the transmission structure so as to drive the phase electrode operating mechanism 12 to release when a leakage fault occurs; the transmission structure comprises an indicating piece 5, a transmission piece 7 in limit fit with the indicating piece 5, and a reset piece 4 respectively matched with the indicating piece 5, the transmission piece 7 and the leakage release 9-0; when the leakage circuit breaker is in a closing state and a leakage fault occurs, the ejector rod 9-00 of the leakage tripper 9-0 drives the transmission piece 7 to act through the reset piece 4, the transmission piece 7 drives the phase pole operating mechanism 12 to trip and simultaneously releases the limit fit with the indicating piece 5, and the indicating piece 5 acts to an indicating position; after the electric leakage fault is eliminated, the external force drives the indicating piece 5 to reset to the initial position from the indicating position, the indicating piece 5 and the transmission piece 7 recover the limit fit, and the push rod 9-00 is driven to reset through the resetting piece 4.

The utility model discloses a leakage circuit breaker, adopt indicator 5 to point out the current state of leakage circuit breaker (whether for the tripping and separating brake state), more directly perceived; the indicator 5 resets and simultaneously drives the ejector rod 9-00 of the leakage release 9-0 to reset, so that the internal structure of the leakage circuit breaker is simplified, the internal installation space is saved, and the miniaturization development trend of the leakage circuit breaker is met; the breaker phase pole and the leakage protection pole are respectively arranged on two sides of the shell 2, so that more installation space is provided for the leakage protection pole; therefore the utility model discloses electric leakage circuit breaker can realize that electromagnetic type electric leakage circuit breaker is general with electronic type electric leakage circuit breaker's casing, reduces production part kind, does benefit to spare part warehouse material management.

Preferably, the leakage release 9 is an electromagnetic leakage release.

As shown in fig. 3-4, the leakage protection electrode further includes a zero sequence current transformer 9-1 arranged in parallel with the leakage release 9-0, an N-pole moving contact 10-0 and an N-pole static contact 10-1 used in cooperation, and an N-pole operating mechanism 8; the N pole operating mechanism 8 is in driving connection with the phase pole operating mechanism 12 and is in driving connection with the N pole moving contact 10-0, the N pole operating mechanism 8 comprises an N pole transmission rod linked with the phase pole operating mechanism 12, the N pole moving contact 10-0 is connected with the N pole transmission rod, and the N pole operating mechanism 8 is not provided with a lock catch, a jump buckle and a handle. Of course, the N-pole operating mechanism 8 may also be configured similarly to the pole operating mechanism 12, and will not be described in detail here.

In the leakage circuit breaker in the prior art, as the resetting mechanism of the ejector rod of the electromagnetic leakage tripper, the N-pole operating mechanism and the leakage indicating mechanism in the leakage protection pole are complex in structure and large in occupied space; meanwhile, the electronic circuit board matched with the electronic leakage release is large in specification and size, so that more installation space is needed; the shell of the leakage circuit breaker in the prior art can not be used universally for the electromagnetic leakage circuit breaker and the electronic leakage circuit breaker.

The transmission structure of the leakage circuit breaker of the utility model has the functions of indication and reset, thereby obviously simplifying the internal structure of the leakage protection electrode and saving more installation space; the phase pole and the leakage protection pole of the circuit breaker are positioned on two sides of the shell 2, so that more installation space is provided for the leakage protection pole; therefore, the function of the common shell of the electromagnetic leakage circuit breaker and the electronic leakage circuit breaker can be realized. Specifically, as shown in fig. 3-4, when the residual current circuit breaker of the embodiment is changed into an electronic residual current circuit breaker, only the residual current release 9-0, the zero sequence current transformer 9-1 and the matched circuit board need to be replaced; the reset piece 4 and the reset piece spring 3 can determine whether to keep according to the driving force of the electronic leakage release.

As shown in fig. 2, the phase pole of the circuit breaker further includes a short-circuit protection mechanism 11, an overload protection mechanism 13 and an arc extinguish chamber 14, the short-circuit protection mechanism 11 is an electromagnetic trip, and the overload protection mechanism 13 includes a bimetallic strip, which are respectively matched with the latch 12-4 of the phase pole operating mechanism 12 to drive the latch 12-4 to rotate so as to disengage from the latch of the trip 12-3, so that the operating mechanism is tripped.

As shown in fig. 2, the breaker phase pole further comprises a first terminal 17 and a second terminal 18, and the first terminal 17, the phase pole contact system and the second terminal 18 are connected in series in sequence.

As shown in fig. 3-4, the indicator 5 is slidably disposed on the housing 2. Further, the indicator 5 is linearly slidably disposed on the housing 2.

As shown in fig. 3-5, the indicator 5 comprises an indicator body 5-0, and one end of the indicator body 5-0 is an indicating end; when the indicator 5 is positioned at the indicating position, the indicating end protrudes outside the shell 2; when the indicator 5 is in the initial position, the indicating end is submerged inside the housing 2.

As shown in fig. 8, the housing 2 is provided with a housing insertion hole 2-5 through which the indication end passes.

As shown in fig. 3-5, the indicator 5 further includes an indicator driving portion 5-1, and when the indicator 5 is reset to the initial position, the indicator driving portion 5-1 drives the ram 9-00 to reset through the resetting member 4. Further, the indicating piece driving part 5-1 is a wedge-shaped protrusion arranged on the indicating piece main body 5-0, the wedge-shaped protrusion comprises an indicating piece driving inclined surface 5-10 matched with the resetting piece 4, when the indicating piece 5 is reset to the initial position, the indicating piece driving inclined surface 5-10 drives the resetting piece 4 to slide towards the direction of resetting the ejector rod 9-00, and the resetting piece 4 drives the ejector rod 9-00 to reset.

As shown in fig. 3-5, the indicator 5 further comprises an indicator stopper 5-2 snap-fitted to the transmission member 7. Furthermore, the indicator limiting part 5-2 is connected with the indicator main body 5-0, and the indicating ends of the indicator limiting part 5-2 and the indicator main body 5-0 are respectively positioned at two ends of the indicator main body 5-0.

Specifically, as shown in fig. 3-5, the indicator limiting portion 5-2 is an L-shaped structure, one arm of the L-shaped structure is connected to the indicator main body 5-0, and the other arm is in limiting fit with the driving member locking portion 7-1 of the driving member 7.

As shown in fig. 3-4, the transmission structure further includes an indicator spring 6-0, and the indicator spring 6-0 applies a force to the indicator 5 with a tendency to move toward the indicating position.

Specifically, as shown in fig. 3-4, the indicator spring 6-0 is a compression spring, an indicator spring cavity 5-00 is formed in the middle of an indicator main body 5-0 of the indicator 5, the indicator spring 6-0 is arranged in the indicator spring cavity, one end of the indicator spring is matched with the side wall of the indicator spring cavity 5-00, and the other end of the indicator spring is matched with the shell 2.

As shown in fig. 3-4 and 8, the housing 2 is further provided with a housing stop 2-6-0, and one end of the indicator spring 6-0 is engaged with the housing stop 2-6-0.

As other embodiments, the indicator spring 6-0 may also be a tension spring, a torsion spring, a spring plate, or the like.

As shown in fig. 5, is an embodiment of the indicator 5: the indicating piece 5 comprises an indicating piece main body 5-0 with a square column structure, an indicating piece driving part 5-1 arranged on one side surface of the indicating piece main body 5-0 and an indicating piece limiting part 5-2; one end of the indicating piece main body 5-0 is an indicating end, and the other end is connected with the indicating piece limiting part 5-2; the middle part of the indicator main body 5-0 is provided with an indicator spring cavity 5-00 for accommodating an indicator spring 6-0; the indicating piece driving part 5-1 is a wedge-shaped bulge, the tip of the wedge-shaped bulge faces the resetting piece 4, and the wedge-shaped bulge comprises an indicating piece driving inclined surface 5-10 matched with the resetting piece 4; the indicating piece limiting part 5-2 is of an L-shaped structure, one arm of the L-shaped structure is connected with the indicating piece main body 5-0, and the other arm of the L-shaped structure is in limiting fit with the transmission piece 7 and is perpendicular to the sliding direction of the indicating piece 5.

As shown in fig. 3-4, the transmission member 7 is rotatably disposed on the housing 2, and the transmission member 7 is driven by an external force to rotate so as to release the limit engagement with the indicator 5.

As another embodiment, the transmission member 7 may also be slidably disposed on the housing 2, for example, the sliding direction of the transmission member 7 is perpendicular to the sliding direction of the indication member 5, and the indication member 7 is driven by an external force to slide to release the limit engagement with the indication member 5: specifically, the indication part 5 is provided with an indication part clamping groove in limit fit with the transmission part 7, the transmission part 7 is provided with a transmission part protrusion matched with the indication part clamping groove, the transmission part 7 slides to enable the transmission part protrusion to be separated from the indication part clamping groove, the transmission part 5 slides under the action of the transmission part spring 6-0, and then the transmission part protrusion and the peripheral side wall of the indication part clamping groove are formed.

As shown in fig. 3-4 and 7, the transmission member 7 includes a transmission member mounting portion 7-0, a transmission member locking portion 7-1 and a transmission member transmission portion, the transmission member 7 is rotatably disposed on the housing 2 through the transmission member mounting portion 7-0, and the transmission member locking portion 7-1 and the transmission member transmission portion are respectively connected to both radial ends of the transmission member mounting portion 7-0; the transmission part locking part 7-1 is in limit fit with the indicating part 5, the transmission part of the transmission part is respectively matched with the resetting part 4 and the phase pole operating mechanism 12, namely, the ejector rod 9-00 of the leakage tripper 9-0 drives the resetting part 4 to act, the resetting part 4 drives the transmission part 7 to rotate through the transmission part, so that the transmission part locking part 7-1 is released from limit fit with the indicating part 5, and meanwhile, the transmission part drives the phase pole operating mechanism 12 to be tripped.

As shown in FIG. 8, the housing 2 includes a transmission member shaft 2-7, and the transmission member mounting portion 7-0 is rotatably disposed on the transmission member shaft 2-7.

As shown in fig. 7, the transmission part includes a transmission part driven part 7-2 and a transmission part driving part 7-3, which are arranged side by side along the radial direction of the transmission part mounting part 7-0, the transmission part driven part 7-2 is engaged with the reset part 4, and the transmission part driving part 7-3 is engaged with the phase pole operating mechanism 12 for driving the phase pole operating mechanism 12 to trip. Furthermore, the driving part driven part 7-2 is of an L-shaped structure, one arm of the L-shaped structure is connected with the driving part mounting part 7-0, and the other arm of the L-shaped structure is matched with the resetting part 4 and is parallel to the axial direction of the driving part mounting part 7-0.

As shown in fig. 2-4, the phase pole operating mechanism 12 includes a snap fastener 12-3 and a latch 12-4, the latch 12-4 is driven by external force to rotate to release the snap fastener 12-3 from the snap fastener; the lock catch piece 12-4 comprises a lock catch piece linkage column 12-40, and the lock catch piece linkage column 12-40 penetrates through the shell avoiding hole 2-12-40 on the shell 2 to be matched with the transmission piece 7. Further, the locking element linkage column 12-40 is in driving fit with the transmission element driving part 7-3.

As shown in fig. 2, an embodiment of the phase electrode operating mechanism 12 is: the phase pole operating mechanism 12 comprises a handle 12-0 and a rotating plate 12-2 which are respectively and rotatably arranged on the shell 2, a connecting rod 12-1, a jump buckle 12-3 and a lock catch 12-4 which are respectively and rotatably arranged on the rotating plate 12-2 and are matched with the lock catch, and a contact support 12-5 for bearing a phase pole moving contact 15; the handle 12-0 is connected with the jump buckle 12-3 through a connecting rod 12-1 in a driving mode, and the contact support 12-5 is rotatably arranged on the rotating plate 12-2 and is elastically connected with the rotating plate 12-2 through a contact spring.

As shown in fig. 3-4 and 7, the driving member locking portion 7-1 is an L-shaped structure, one arm of the L-shaped structure is connected to the driving member mounting portion 7-0, and the other arm thereof is snap-fitted to the indicator limiting portion 5-2 of the indicator 5 and extends in a direction perpendicular to the axial direction of the driving member mounting portion 7-0.

Specifically, as shown in fig. 7, the actuator locking part 7-1 includes a first locking part arm 7-10 and a second locking part arm 7-11 which are connected in a bent manner, the second locking part arm 7-11 is further connected to the actuator mounting part 7-0, and the first locking part arm 7-10 is snap-fitted to the free end of the indicator limiting part 5-2 of the indicator 5.

As shown in fig. 3-4, the transmission structure further comprises a transmission member spring 6-1, and the transmission member spring 6-1 applies force to the transmission member 7 to keep the transmission member in limit fit with the indication member 5. Further, the driving member spring 6-1 is a torsion spring and is coaxially arranged with the driving mounting portion 7-0 of the driving member 7, one end of the torsion spring is matched with the shell 2, and the other end of the torsion spring is matched with the driving member locking portion 7-1 of the driving member 7.

As shown in fig. 7, one embodiment of the transmission member 7 is: the transmission piece 7 comprises a transmission piece mounting part 7-0, a transmission piece locking part 7-1 and a transmission piece transmission part, the transmission piece 7 is rotatably arranged on the shell 2 through the transmission piece mounting part 7-0, and the transmission piece locking part 7-1 and the transmission piece transmission part are respectively connected with the two radial ends of the transmission piece mounting part 7-0; the transmission part locking part 7-1 is of an L-shaped structure and comprises a first locking part arm 7-10 and a second locking part arm 7-11 which are connected in a bending way, the second locking part arm 7-11 is also connected with the transmission part mounting part 7-0, and the first transmission part arm 7-10 is parallel to the rotation axis of the transmission part mounting part 7-0; the transmission part comprises a transmission part driven part 7-2 and a transmission part driving part 7-3 which are arranged side by side along the axial direction of the transmission part installation part 7-0, the transmission part driven part 7-2 is of an L-shaped structure and comprises a first bent arm 7-20 and a second bent arm 7-21, the second bent arm 7-21 is further connected with the transmission part installation part 7-0, and the first bent arm 7-20 of the driven part is perpendicular to the axial direction of the transmission part installation part 7-0. Further, the actuator locking part 7-1 further comprises a locking part spring limiting protrusion matched with one end of the actuator spring 6-1, and the locking part spring limiting protrusion and the locking part second arm 7-11 are respectively connected with two ends of the locking part first arm 7-10 in a bending mode.

As shown in fig. 3-4, the reset element 4 is slidably disposed on the housing 2.

As shown in fig. 3-4 and 6, the resetting member 4 includes a resetting member sliding portion and a resetting member transmission portion, the resetting member 4 is slidably disposed on the housing 2 through the resetting member sliding portion, and the resetting member transmission portion is respectively matched with the push rod 9-00 and the transmission member 7; when the electric leakage circuit breaker has an electric leakage fault, the ejector rod 9-00 drives the transmission part 7 to act through the reset part transmission part. Furthermore, one end of the reset piece transmission part is matched with the transmission part 7 and the ejector rod 9-00, and the other end of the reset piece transmission part is connected with the reset piece sliding part; the reset part transmission part is matched with the indicating piece 5, and when the indicating piece 5 is driven by external force to reset to an initial position, the indicating piece 5 drives the reset piece 4 to slide through the reset part transmission part so that the reset part transmission part drives the ejector rods 9-00 to reset.

As shown in fig. 3-4, the transmission structure further includes a return spring 3, and the return spring 3 applies a force to the return element 4 to make the return element 4 drive the transmission member 7 to move. Specifically, as shown in fig. 3-4, after the indication member 5 and the transmission member 7 are disengaged from the limit engagement, the indication member 5 slides to the indication position to disengage the indication member driving portion 5-1 of the indication member 5 from the limit engagement with the reset member 4, and the reset member spring 3 drives the reset member 4 to slide to drive the transmission member 7 to rotate.

In the leakage circuit breaker of the embodiment, when a leakage fault occurs, the reset spring 3 applies a first acting force to the transmission member 7 through the reset member 4, the ejector rod 9-00 of the leakage release 9-0 applies a second acting force to the transmission member 7 through the reset member 4, and the first acting force and the second acting force act on the transmission member 7 together to act, so that the action speed of the leakage circuit breaker is increased when the leakage fault occurs, the segmentation time is shortened, and the action reliability is improved; moreover, due to the existence of the first acting force, the design requirement on the driving force of the leakage release 9-0 can be properly reduced; the magnitude of the first force can also be varied by varying the return spring 3.

As shown in fig. 3-4 and 8, the housing 2 further includes a restoring member spring cavity 2-3, the restoring member spring 3 is disposed in the restoring member spring cavity 2-3, one end of the restoring member spring 3 is engaged with the side wall of the restoring member spring cavity 2-3, and the other end thereof is engaged with one end of the restoring member sliding portion.

As shown in fig. 3-4 and 8, the housing 2 includes a housing rail structure in sliding guiding and limiting fit with the sliding part of the reset piece, and the sliding part of the reset piece is slidably disposed on the housing rail structure. Furthermore, the shell guide rail structure comprises a shell sliding groove 2-4, and the resetting piece sliding part is arranged in the shell sliding groove 2-4 in a sliding mode. Specifically, as shown in fig. 3-4, the reset piece sliding plate 4-1 of the reset piece sliding part is slidably disposed in the housing sliding groove 2-4.

As shown in fig. 3-4 and 6, is an embodiment of the restoring member 4: the reset part sliding part and the reset part transmission part are bent and connected to form an L-shaped structure integrally, and the free end of the reset part transmission part is respectively matched with the ejector rod 9-00 and the transmission part 7. Further, the reset piece sliding part comprises a reset piece matching end 4-0 and a reset piece sliding plate 4-1 which are sequentially connected, the reset piece 4 is arranged on the shell 2 in a sliding mode through the reset piece sliding plate 4-1, the reset piece matching end 4-0 is matched with a reset piece spring 3 of the transmission structure, the reset piece transmission part comprises a reset piece driven protrusion 4-2, a reset piece transition plate 4-3, a reset piece avoiding part 4-4 and a reset piece driving plate 4-5 which are sequentially connected, the reset piece sliding plate 4-1 is also connected with the reset piece driven protrusion 4-2, the reset piece driven protrusion 4-2 protrudes towards the side where the indication piece 5 is and is matched with the indication piece driving part 5-1 of the indication piece 5, the reset piece avoiding part 4-4 comprises a reset piece avoiding groove 4-40, the reset piece avoiding groove 4-40 is correspondingly matched with the transmission part 7-0 of the transmission part 7, the reset piece driving plate 4-5 is matched with a driving part of a driving piece 7 and a push rod 9-00.

As shown in fig. 6, the resetting member avoiding portion 4-4 is a U-shaped structure, two ends of which are respectively connected to the resetting member transition plate 4-3 and the resetting member driving plate 4-5, and an opening of the U-shaped structure is relatively matched with the driving member mounting portion 7-0 of the driving member 7.

As shown in fig. 6, the reset member driven protrusion 4-2 is a U-shaped structure, two ends of the reset member driven protrusion are respectively connected with the reset member sliding plate 4-1 and the reset member transition plate 4-3, and the bottom of the U-shaped structure is matched with the indicator driving part 5-1 of the indicator 5.

As shown in fig. 6, the restoring member 4 is an integral structure and is formed by cutting and bending an elastic metal plate.

The operation of the earth leakage breaker of the present embodiment will be described with reference to fig. 3-4.

As shown in fig. 3, in the embodiment, the residual current circuit breaker is in a closed state, the indicator 5 is in an initial position, the indicating end of the indicator 5 is immersed in the housing 2, the indicator driving portion 5-1 of the indicator 5 is in limit fit with the limiting member driven protrusion 4-2 of the reset member 4, the reset member coupling end 4-0 of the reset member 4 presses the reset member spring 3 to store energy, the reset member driving plate 4-5 of the reset member 4 presses the ejector rod 9-00 of the residual current circuit breaker 9-0 and is opposite to the transmission member driven portion 7-2 of the transmission member 7, and the transmission member locking portion 7-1 of the transmission member 7 is in snap fit with the indicator limiting portion 5-2 of the indicator 5. Referring to fig. 3 and 4, in the residual current circuit breaker of this embodiment, when a leakage fault occurs, the top rod 9-00 of the leakage release 9-0 is pushed out to drive the transmission member 7 to rotate clockwise (the reset member driving part generates a certain elastic deformation) through the reset member driving plate 4-5 and store energy in the transmission member spring 6-1, so that the transmission member locking part 7-1 and the indicating member limiting part 5-2 are disengaged from the snap fit, the indicating member 5 slides to the indicating position under the action of the indicating member spring 6-0 to make the indicating end protrude outside the housing 2, meanwhile, the indication member driving part 5-1 and the reset member driven protrusion 4-2 are released from limit matching, the reset member spring 3 releases energy and drives the reset member 4 to slide rightwards, and the reset member driving plate 4-5 applies acting force which enables the transmission member 7 to rotate anticlockwise to the transmission member driven part 72. Referring to fig. 3 and 4, in the residual current circuit breaker of the present embodiment, after the leakage fault is eliminated, an external force presses the indicator 5 downward, the indicator driving portion 5-1 drives the reset element 4 to move leftward through the reset element driven protrusion 4-2, the reset element coupling end 4-0 abuts against the reset element spring 3 to store energy, the reset element driving portion 4-5 drives the ejector rod 9-00 of the leakage release 9-0 to reset, and when the indicator 5 resets to the initial position, the transmission member 7 rotates clockwise under the action of the transmission member spring 6-1, so that the transmission member locking portion 7-1 and the indicator limiting portion 5-2 recover the snap-fit.

Referring to fig. 3 and 8, the two sides of the casing 2 of the present embodiment form assembling grooves, which are respectively provided with a phase pole of the circuit breaker and an earth leakage protection pole, and the two cover plates are assembled on the two sides of the casing 2 to form a circuit breaker housing. On the side of the leakage protection electrode of the housing 2 according to the embodiment, the transmission member 7 is disposed between the leakage release 9-0 and the N-pole operating mechanism 8, the indicator 5 is disposed above the transmission member 7, the reset spring 3 and the reset sliding plate 4-1 of the reset 4 are disposed above the leakage release 9-0, a position corresponding to the handle 12-0 of the phase-pole operating mechanism 12 is disposed, the reset drive plate 4-5 of the reset 4 extends between the leakage release 9-0 and the transmission member 7, the indicator drive portion 5-1 of the indicator 5 is correspondingly matched with the limit-piece driven protrusion 4-2 of the reset 4, the zero-sequence current transformer 9-1 is disposed below the leakage release 9-0, the N-pole operating mechanism 8 is not provided with the latch, the trip and the handle, and is driven by the phase-pole operating mechanism 12, so that the transmission member 7, the N-pole operating mechanism 8, and the like can be installed, The mechanism such as indicator 5, the overall layout is reasonable and compact.

In the embodiment, the indication part is adopted to replace a handle to display the indication of the leakage fault of the circuit breaker, so that the mechanism which is simpler in structure and smaller in occupied space is provided; and the mechanism realizes the structural universality of electromagnetic and electronic products on the premise of not changing the structure of the shell, reduces the material quantity and is beneficial to material management of a factory.

As shown in fig. 1, the residual-current circuit breaker of this embodiment is further provided with a test button, and a test circuit corresponding to the test button adopts a single-breakpoint or double-breakpoint structure, preferably a double-breakpoint structure, which is the prior art in the field and is not described again.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model discloses to the ordinary skilled person in technical field's the prerequisite that does not deviate from the utility model discloses under the 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 (19)

1. The residual current circuit breaker comprises a shell (2), and a circuit breaker phase pole and a residual current protection pole which are arranged on two sides of the shell (2) side by side; the circuit breaker phase pole comprises a phase pole operating mechanism (12) and a phase pole contact system, the leakage protection pole comprises a leakage release (9-0) and a transmission structure, and the leakage release (9-0) is in driving fit with the phase pole operating mechanism (12) through the transmission structure;

the method is characterized in that: the transmission structure comprises an indicating piece (5), a transmission piece (7) in limit fit with the indicating piece (5) and a resetting piece (4);

when the leakage circuit breaker is in a closing state and has a leakage fault, a mandril (9-00) of the leakage tripper (9-0) drives a transmission piece (7) to act through a reset piece (4), the transmission piece (7) drives a phase pole operating mechanism (12) to trip and simultaneously releases limit fit with an indicating piece (5), and the indicating piece (5) acts to an indicating position; after the electric leakage fault is eliminated, the external force drives the indicating piece (5) to reset to the initial position, the indicating piece (5) and the transmission piece (7) restore to the limit fit and simultaneously drive the ejector rod (9-00) to reset through the resetting piece (4).

2. A residual current circuit breaker as claimed in claim 1, characterized in that: the indicator (5) is arranged on the shell (2) in a sliding mode.

3. A residual current circuit breaker as claimed in claim 2, characterized in that: the indicator (5) comprises an indicator main body (5-0), and one end of the indicator main body (5-0) is an indicating end; when the indicating piece (5) is positioned at the indicating position, the indicating end protrudes out of the shell (2); when the indicator (5) is located at the initial position, the indicating end is immersed into the shell (2).

4. A residual current circuit breaker as claimed in claim 1 or 2, characterized in that: the transmission structure further comprises an indicating piece spring (6-0), and after the transmission piece (7) is disengaged from the limiting fit of the indicating piece (5), the indicating piece spring (6-0) drives the indicating piece (5) to move to an indicating position.

5. A residual current circuit breaker as claimed in claim 2, characterized in that: the indicating piece (5) comprises an indicating piece driving part (5-1), and when the indicating piece (5) is reset to the initial position, the indicating piece driving part (5-1) drives the ejector rod (9-00) to reset through the resetting piece (4).

6. A residual current circuit breaker as claimed in claim 1 or 2, characterized in that: the indicating piece (5) comprises an indicating piece limiting part (5-2), the indicating piece limiting part (5-2) is of an L-shaped structure, one arm of the L-shaped structure is connected with an indicating piece main body (5-0) of the indicating piece (5), and the other arm of the L-shaped structure is in snap fit with the transmission piece (7) and is perpendicular to the sliding direction of the indicating piece (5).

7. A residual current circuit breaker as claimed in claim 1, characterized in that: the transmission piece (7) is rotatably arranged on the shell (2).

8. A residual current circuit breaker as claimed in claim 7, characterized in that: the transmission piece (7) comprises a transmission piece mounting part (7-0), a transmission piece locking part (7-1) and a transmission piece transmission part, the transmission piece (7) is rotatably arranged on the shell (2) through the transmission piece mounting part (7-0), and the transmission piece locking part (7-1) and the transmission piece transmission part are respectively connected with two radial ends of the transmission piece mounting part (7-0); the transmission part locking part (7-1) is in limit fit with the indicating part (5), and the transmission part of the transmission part is respectively matched with the reset part (4) and the phase pole operating mechanism (12).

9. A residual current circuit breaker as claimed in claim 8, characterized in that: the transmission part comprises a transmission part driven part (7-2) and a transmission part driving part (7-3) which are arranged side by side along the radial direction of the transmission part mounting part (7-0), the transmission part driven part (7-2) is matched with the reset part (4), and the transmission part driving part (7-3) is matched with the phase electrode operating mechanism (12).

10. A residual current circuit breaker as claimed in claim 1 or 7, characterized in that: the phase pole operating mechanism (12) comprises a tripping piece (12-3) and a locking piece (12-4) which are matched with each other in a locking way, and the locking piece (12-4) is driven by external force to rotate so as to release the locking and matching with the tripping piece (12-3); the lock catch piece (12-4) comprises a lock catch piece linkage column (12-40), and the lock catch piece linkage column (12-40) penetrates through a shell avoiding hole (2-12-40) in the shell (2) to be matched with the transmission piece (7).

11. A residual current circuit breaker as claimed in claim 1, characterized in that: the reset piece (4) is arranged on the shell (2) in a sliding mode.

12. A residual current circuit breaker as claimed in claim 11, characterized in that: the reset piece (4) comprises a reset piece sliding part and a reset piece transmission part, the reset piece (4) is arranged on the shell (2) in a sliding mode through the reset piece sliding part, and the reset piece transmission part is respectively matched with the ejector rod (9-00) and the transmission part (7).

13. A residual current circuit breaker as claimed in claim 1 or 12, characterized in that: the transmission structure further comprises a resetting spring (3), and the resetting spring (3) applies acting force to the resetting piece (4) to enable the resetting piece (4) to drive the transmission piece (7) to act.

14. A residual current circuit breaker as claimed in claim 12, characterized in that: the shell (2) comprises a shell guide rail structure which is in sliding guide limit fit with the sliding part of the reset piece, and the sliding part of the reset piece is arranged on the shell guide rail structure in a sliding mode.

15. A residual current circuit breaker as claimed in claim 14, characterized in that: the shell guide rail structure comprises shell sliding grooves (2-4), and the sliding part of the reset piece is arranged in the shell sliding grooves (2-4) in a sliding mode.

16. A residual current circuit breaker as claimed in claim 13, characterized in that: the shell (2) further comprises a reset spring cavity (2-3), the reset spring (3) is arranged in the reset spring cavity (2-3), one end of the reset spring (3) is matched with the side wall of the reset spring cavity (2-3), and the other end of the reset spring (3) is matched with one end of a reset sliding part.

17. A residual current circuit breaker as claimed in claim 12, characterized in that: one end of the reset piece transmission part is matched with the transmission part (7) and the ejector rod (9-00), and the other end of the reset piece transmission part is connected with the reset piece sliding part; reset a transmission portion and still cooperate with indicator (5), when external force drive indicator (5) reset to initial position, indicator (5) through reset a transmission portion drive reset piece (4) slip make reset a transmission portion drive ejector pin (9-00) reset.

18. A residual current circuit breaker as claimed in claim 12, characterized in that: the reset piece sliding part and the reset piece transmission part are connected in a bending mode and are integrally of an L-shaped structure, the reset piece sliding part comprises a reset piece matching end (4-0) and a reset piece sliding plate (4-1) which are sequentially connected, the reset piece (4) is arranged on the shell (2) in a sliding mode through the reset piece sliding plate (4-1), the reset piece matching end (4-0) is matched with a reset piece spring (3) of the transmission structure, the reset piece transmission part comprises a reset piece driven protrusion (4-2), a reset piece transition plate (4-3), a reset piece avoiding part (4-4) and a reset piece driving plate (4-5) which are sequentially connected, the reset piece sliding plate (4-1) is further connected with the reset piece driven protrusion (4-2), the reset piece driven protrusion (4-2) protrudes towards the side where the indication piece (5) is located and is matched with the indication piece driving part (5-1) of the indication piece (5), the reset piece avoiding part (4-4) comprises a reset piece avoiding groove (4-40), the reset piece avoiding groove (4-40) is correspondingly matched with a transmission piece mounting part (7-0) of the transmission piece (7), and the reset piece driving plate (4-5) is matched with a transmission piece transmission part and an ejector rod (9-00) of the transmission piece (7).

19. A residual current circuit breaker as claimed in claim 1, characterized in that: the leakage protection pole also comprises a zero sequence current transformer (9-1), an N pole moving contact (10-0) and an N pole static contact (10-1) which are matched for use, and an N pole operating mechanism (8); the N-pole operating mechanism (8) is in driving connection with the phase pole operating mechanism (12) and is in driving connection with the N-pole moving contact (10-0), the N-pole operating mechanism (8) comprises an N-pole transmission rod linked with the phase pole operating mechanism (12), and the N-pole moving contact (10-0) is connected with the N-pole transmission rod.

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