CN215342461U

CN215342461U - Residual current circuit breaker

Info

Publication number: CN215342461U
Application number: CN202121656857.0U
Authority: CN
Inventors: 周维峰; 林凯; 胡广召
Original assignee: WENZHOU AOELEC ELECTRICAL CO Ltd
Current assignee: WENZHOU AOELEC ELECTRICAL CO Ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-12-28
Anticipated expiration: 2031-07-20

Abstract

The utility model relates to a leakage circuit breaker, which comprises a shell, wherein a leakage action mechanism and a tripping mechanism are arranged on the shell, the leakage action mechanism comprises a lever, a jump buckle, a lock catch and a torsional spring, the tripping mechanism comprises a tripper and a push block, the tripper can drive the push block to move, the push block can push the lock catch to rotate, the lock catch can enable a clamping table to be separated from the jump buckle to release the positioning of the lever by rotating, the tripper comprises a U-shaped magnetic yoke, a coil framework and a driving shaft, the coil is wound on the outer circumferential surface of the coil framework, the coil framework is clamped between two ends of the U-shaped magnetic yoke, the coil framework is provided with a through hole, the through hole and the coil framework are coaxially arranged, the driving shaft can slide in the through hole, the push block is provided with a connecting rod, and a reset spring for resetting the driving shaft is arranged in the through hole. By adopting the technical scheme, the tripping of the residual current circuit breaker can be realized in the residual current circuit so as to protect the circuit.

Description

Residual current circuit breaker

Technical Field

The utility model relates to the field of circuit breakers, in particular to a residual current circuit breaker.

Background

The switch can automatically act when the leakage current in the circuit of the leakage breaker exceeds a preset value.

Chinese patent application No. CN202110142874.0 discloses an electric leakage tripping device of an electric leakage circuit breaker, which comprises a handle mechanism, an electric leakage actuating mechanism, a power taking mechanism and a tripping mechanism, wherein the electric leakage actuating mechanism comprises a lever, a trip buckle, a lock catch and a torsion spring, the lever is hinged on a housing of the electric leakage circuit breaker by a pin shaft, the lock catch is also rotatably arranged by the pin shaft, the trip buckle is hinged on the upper end of the lever, the trip buckle is connected with an electric leakage handle in the handle mechanism by a connecting rod, the lock catch comprises a first extension foot and a second extension foot, wherein the upper end of the first extension foot is provided with a clamping platform, the lock catch realizes the positioning of the lever by the clamping platform and the trip buckle after the electric leakage circuit breaker is switched on, the torsion force of the torsion spring acts on the second extension foot of the lock catch to make the clamping platform and the trip buckle on the first extension foot of the lock catch, the tripping mechanism comprises a tripping device and a pushing block, the tripper can drive the push block to move, the push block is arranged below the second extension pin of the lock catch and opposite to the second extension pin, the push block can push the second extension pin to realize lock catch rotation, the lock catch rotation can enable the clamping platform and the jump buckle to be separated and removed to position the lever, the electricity taking mechanism comprises at least two groups of conducting strips arranged on the shell of the circuit breaker, the two adjacent groups of conducting strips are separated and aligned, each group of conducting strips comprises a first conducting strip and a second conducting strip which are arranged at intervals, a chute is arranged on the shell of the circuit breaker and positioned between the first conducting strip and the second conducting strip, one end of the chute is provided with a baffle, a bracket is arranged on the chute, a contact spring is arranged between one end of the bracket and the baffle, the bracket can be in sliding fit with the chute, the other end of the bracket corresponds to the lever, and the lever rotates to push the bracket to move, the electric leakage breaker is characterized in that mounting holes corresponding to each group of conducting strips are formed in the support, conductive contact pieces are arranged in the mounting holes, the support is pushed by a lever to overcome the elastic force of the conflict spring to move the two ends of each conductive contact piece to be in contact with the first and second conducting strips of the corresponding group of conducting strips in the switching-on process of the electric leakage breaker, the first and second conducting strips of the group of conducting strips are electrically conducted, and the lever moves the two ends of each conductive contact piece under the action of the support and the conflict spring to be disconnected with the first and second conducting strips when the electric leakage breaker is disconnected.

Therefore, a release for tripping leakage in the above-mentioned scheme is needed.

Disclosure of Invention

The purpose of the utility model is as follows: in order to overcome the defects of the prior art, the utility model provides an electric leakage circuit breaker which can be realized in an electric leakage circuit and can be used for tripping the electric leakage circuit breaker so as to protect the circuit.

The technical scheme of the utility model is as follows: an electric leakage circuit breaker comprises a shell, wherein an electric leakage action mechanism and a tripping mechanism are arranged on the shell, the electric leakage action mechanism comprises a lever, a jump buckle, a lock catch and a torsional spring, the lever is hinged on the shell through a pin shaft, the lock catch is rotatably arranged on the pin shaft, the jump buckle is hinged at the upper end of the lever, the lock catch comprises a first extension pin and a second extension pin, a clamping table is arranged at the upper end of the first extension pin, after the electric leakage circuit breaker is switched on, the lock catch is clamped with the jump buckle through the clamping table to realize the positioning of the lever, the torsional force of the torsional spring acts on the second extension pin of the lock catch to enable the clamping table on the first extension pin of the lock catch to be clamped with the jump buckle, the tripping mechanism comprises a release and a push block, the release can drive the push block to move, the push block is arranged below the second extension pin of the lock catch and opposite to the second extension pin, the push block can push the second extension pin to realize the rotation of the lock catch, the separation of the clamping table and the jump buckle can be released to position the lever, the tripper includes "U" shape yoke, coil skeleton and drive shaft, and the coil twines on coil skeleton's outer peripheral face, and the coil skeleton card is located between the both ends of "U" shape yoke, and the through-hole has been seted up to the coil skeleton, and the through-hole sets up with the coil skeleton is coaxial, the drive shaft can slide in the through-hole and set up, the ejector pad has the connecting rod, be equipped with the reset spring that makes the drive shaft reset in the through-hole.

By adopting the technical scheme, when the release senses an electric leakage signal, the U-shaped magnetic yoke is electrified and magnetized, the U-shaped magnetic yoke drives the driving shaft to slide, the driving shaft drives the push block to slide, the push block pushes the lock catch to rotate, so that the clamping table on the lock catch is separated from the jump buckle, the lever is released, the electric leakage circuit breaker is opened, after the electric leakage circuit breaker is opened, the driving shaft resets under the elastic action of the reset spring, the push block resets along with the elastic action, the electric leakage tripping mechanism is reasonable in structure, and the electric leakage action mechanism adopts the scheme and is very scientific.

The utility model further provides that: the shell is further provided with a partition plate, the partition plate is provided with a guide groove, the push block is provided with a guide portion, and the guide portion and the guide groove form guide sliding fit.

Adopt above-mentioned further setting again, the guide part slides in the guide way, and the direction slides effectually, guarantees that the ejector pad can be better promotes the hasp, guarantees the in-process that the ejector pad slided in the casing, can not take place the position change.

The utility model further provides that: "U" shape yoke contains magnet yoke piece and lower magnet yoke piece, coil skeleton is equipped with overhead gage and lower baffle, and the draw-in groove that can supply magnet yoke piece card to go up radial seting up of coil skeleton of overhead gage, is equipped with the stopper in the draw-in groove, be equipped with on the overhead gage and supply stopper male first constant head tank, the second constant head tank has been seted up along the direction that the overhead gage inserted the draw-in groove to the magnet yoke piece down, be equipped with the locating piece that can insert the second constant head tank on the lower terminal surface of coil skeleton.

By adopting the further arrangement, the U-shaped magnetic yoke and the coil framework are firmly installed.

Still further arrangements of the utility model are: the jack that can supply the connecting rod male is seted up to the drive shaft, and the connecting rod closely cooperates with the jack, realizes connecting rod and drive shaft fixed connection.

Adopt above-mentioned still further setting, at the electric leakage circuit breaker electric leakage, "U" shape yoke circular telegram magnetism, "U" shape yoke drive shaft slips in the through-hole, and the drive shaft drives the ejector pad through the connecting rod and slides for the ejector pad can promote the second and extend the foot, and the hasp rotates, and the card platform is detained the separation with jumping, and electric leakage circuit breaker separating brake, and at this moment, "U" shape yoke demagnetization, the drive shaft resets under reset spring's elasticity effect, and the drive shaft drives the ejector pad and resets.

Still further arrangements of the utility model are: the U-shaped magnetic yoke is provided with a plurality of pins, and the shell is provided with slots for the pins to be inserted.

By adopting the above further arrangement, the plug pins are inserted into the slots, so that the tripper is fixedly arranged on the shell, and the tripper is convenient to detach and replace.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is a block diagram of an embodiment of the present invention;

fig. 3 is an assembly view of a trip unit and a push block according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a leak remover according to an embodiment of the present invention;

FIG. 5 is a diagram of a bobbin structure in accordance with an embodiment of the present invention;

FIG. 6 is a diagram of a bobbin structure in accordance with an embodiment of the present invention;

FIG. 7 is a view of the structure of a "U" shaped yoke according to an embodiment of the present invention;

FIG. 8 is a block diagram of a push block according to an embodiment of the present invention;

FIG. 9 is a diagram of a baffle plate structure according to an embodiment of the utility model;

FIG. 10 is a housing construction of an embodiment of the utility model;

FIG. 11 is a drive shaft construction of an embodiment of the present invention;

FIG. 12 is a schematic diagram of an actuator mechanism according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indications (such as up, down, front, and back … …) in the description of the present invention are only used to explain the relative position relationship, motion, etc. between the components in a specific posture (such as the direction indicated by the arrow X shown in fig. 1 and 2 is up), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary that a person skilled in the art can realize the technical solutions, and when the technical solutions are contradictory or cannot be realized, such a combination of the technical solutions should be considered to be absent and not within the protection scope of the present invention.

As shown in fig. 1-12, the residual current circuit breaker of the present invention includes a housing 1, a leakage actuating mechanism 2 and a tripping mechanism 3 are disposed on the housing 1, the leakage actuating mechanism 2 includes a lever 21, a trip 22, a latch 23 and a torsion spring 24, the lever 21 is hinged to the housing 1 through a pin shaft 4, the latch 23 is rotatably disposed on the pin shaft 4, the trip 22 is hinged to the upper end of the lever 21, the latch 23 includes a first extension pin 231 and a second extension pin 232, a locking platform 233 is disposed at the upper end of the first extension pin 231, after the leakage circuit breaker is closed, the latch 23 is locked with the trip 22 through the locking platform 233 to position the lever 21, the torsion force of the torsion spring 24 acts on the second extension pin 232 of the latch 23 to make the locking platform 233 on the first extension pin 231 of the latch 23 locked with the trip 22, the tripping mechanism 3 includes a trip 31 and a push block 32, the trip 31 can drive the push block 32 to move, the push block 32 is disposed below the second extension leg 232 of the latch 23 and opposite to the second extension leg 232, the push block 32 can push the second extension leg 232 to rotate the latch 23, the latch 23 can rotate to separate the holder 233 from the jumper 22 to release the positioning of the lever 21, the trip unit 31 includes a "U" -shaped magnetic yoke 311, a coil 312, a coil frame 313 and a driving shaft 314, the coil 312 is wound on the outer circumferential surface of the coil frame 313, the coil frame 313 is clamped between two ends of the "U" -shaped magnetic yoke 311, the coil frame 313 is provided with a through hole 3131, the through hole 3131 is coaxial with the coil frame 313, the driving shaft 314 can be slidably disposed in the through hole 3131, the push block 32 has a connecting rod 33, and a return spring 34 for returning the driving shaft 314 is disposed in the through hole 3131.

When the release 31 senses an electric leakage signal, the "U" shaped magnetic yoke 311 is energized, the "U" shaped magnetic yoke 311 drives the driving shaft 314 to slide, the driving shaft 314 drives the push block 32 to slide, the push block 32 pushes the latch 23 to rotate, so that the clamping table 233 on the latch 23 is separated from the trip 22, the lever 21 is released, the electric leakage circuit breaker is opened, after the electric leakage circuit breaker is opened, the driving shaft 314 is reset under the elastic force of the reset spring 34, the push block 32 is reset accordingly, the electric leakage tripping mechanism 3 is reasonable in structure, and the electric leakage action mechanism 2 is very scientific by adopting the scheme.

Wherein the driving shaft 314 may be an iron core.

The shell 1 is further provided with a partition plate 5, the partition plate 5 is provided with a guide groove 51, the push block 32 is provided with a guide part 35, and the guide part 35 and the guide groove 51 form guide sliding fit.

The guide part 35 slides in the guide groove 51, the guide sliding effect is good, the push block 32 can better push the lock catch 23, and the position of the push block 32 cannot be changed in the sliding process of the shell 1.

The "U" -shaped magnetic yoke 311 includes an upper magnetic yoke sheet 3111 and a lower magnetic yoke sheet 3112, the coil frame 313 is provided with an upper baffle 3132 and a lower baffle 3133, the upper baffle 3132 radially opens a slot 31321 along the coil frame 313 for the upper magnetic yoke sheet 3111 to be inserted into, a limit block 31322 is provided in the slot 31321, the upper magnetic yoke sheet 3111 is provided with a first positioning groove 31111 for the limit block 31322 to be inserted into, the lower magnetic yoke sheet 3112 radially opens a second positioning groove 31121 along the direction in which the upper magnetic yoke sheet 3111 is inserted into the slot 31321, the lower baffle 3133 of the coil frame 313 is provided with a positioning block 31331 for the second positioning groove 31121 to be inserted into, so that the "U" -shaped magnetic yoke 311 and the coil frame 313 are firmly installed.

The driving shaft 314 is provided with an insertion hole 3141 into which the connecting rod 33 can be inserted, and the connecting rod 33 is tightly matched with the insertion hole 3141 to realize the fixed connection of the connecting rod 33 and the driving shaft 314.

When the leakage breaker leaks electricity, the "U" shaped magnetic yoke 311 is energized, the "U" shaped magnetic yoke 311 drives the driving shaft 314 to slide in the through hole 3131, the driving shaft 314 drives the push block 32 to slide through the connecting rod 33, so that the push block 32 can push the second extension pin 232, the latch 23 rotates, the latch 233 is separated from the jump buckle 22, the leakage breaker is opened, at this time, the "U" shaped magnetic yoke 311 is deenergized, the driving shaft 314 is reset under the elastic force of the reset spring 34, and the driving shaft 314 drives the push block 32 to reset.

The U-shaped yoke 311 has a plurality of pins 3113, the housing 1 has slots 11 into which the pins 3113 are inserted, the pins 3113 are inserted into the slots 11, and the release 31 is fixedly mounted on the housing 1, so that the release 31 is easy to detach and replace.

Claims

1. An electric leakage circuit breaker comprises a shell, wherein an electric leakage action mechanism and a tripping mechanism are arranged on the shell, the electric leakage action mechanism comprises a lever, a jump buckle, a lock catch and a torsional spring, the lever is hinged on the shell through a pin shaft, the lock catch is rotatably arranged on the pin shaft, the jump buckle is hinged at the upper end of the lever, the lock catch comprises a first extension pin and a second extension pin, a clamping table is arranged at the upper end of the first extension pin, after the electric leakage circuit breaker is switched on, the lock catch is clamped with the jump buckle through the clamping table to realize the positioning of the lever, the torsional force of the torsional spring acts on the second extension pin of the lock catch to enable the clamping table on the first extension pin of the lock catch to be clamped with the jump buckle, the tripping mechanism comprises a release and a push block, the release can drive the push block to move, the push block is arranged below the second extension pin of the lock catch and opposite to the second extension pin, the push block can push the second extension pin to realize the rotation of the lock catch, the separation of the clamping table and the jump buckle can be released to position the lever, the tripper is characterized by comprising a U-shaped magnetic yoke, a coil framework and a driving shaft, wherein the coil is wound on the outer peripheral surface of the coil framework, the coil framework is clamped between two ends of the U-shaped magnetic yoke, the coil framework is provided with a through hole, the through hole and the coil framework are coaxially arranged, the driving shaft can be arranged in the through hole in a sliding manner, the push block is provided with a connecting rod, and a reset spring for resetting the driving shaft is arranged in the through hole.

2. A residual current circuit breaker according to claim 1, characterized in that the housing is further provided with a partition plate, the partition plate is provided with a guide groove, the push block is provided with a guide portion, and the guide portion and the guide groove form a guide sliding fit.

3. An electrical leakage breaker as claimed in claim 1 or 2, wherein the "U" shaped magnetic yoke comprises an upper magnetic yoke piece and a lower magnetic yoke piece, the coil frame is provided with an upper baffle and a lower baffle, the upper baffle is provided with a slot along the radial direction of the coil frame for the upper magnetic yoke piece to be inserted into, the slot is provided with a stopper, the upper magnetic yoke piece is provided with a first positioning slot for the stopper to be inserted into, the lower magnetic yoke piece is provided with a second positioning slot along the direction of the upper magnetic yoke piece inserted into the slot, and the lower end face of the coil frame is provided with a positioning block for the second positioning slot to be inserted into.

4. A residual current circuit breaker according to claim 1 or 2, characterized in that the driving shaft is provided with an insertion hole into which the connecting rod can be inserted, and the connecting rod is tightly fitted with the insertion hole to fixedly connect the connecting rod with the driving shaft.

5. A residual current circuit breaker according to claim 1 or 2, characterized in that the "U" -shaped yoke has a plurality of pins, and the housing is provided with slots into which the pins can be inserted.