CN210378942U

CN210378942U - N-pole instantaneous-closing tripping device of integrated DPN small-sized residual-current circuit breaker

Info

Publication number: CN210378942U
Application number: CN201921513244.4U
Authority: CN
Inventors: 牟永江; 王刚; 张蒙; 葛康佳; 郑志豪; 黄国臣
Original assignee: Zhejiang Westhomes Electric Co ltd
Current assignee: Zhejiang Westhomes Electric Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-04-21
Anticipated expiration: 2029-09-12

Abstract

The N-pole instantaneous tripping device comprises an N-pole middle cover, a movable iron core, a static iron core, an N-pole static contact, a shaft, a lock catch and an instantaneous tripping torsion spring, wherein the N-pole middle cover is of a square structure, the movable iron core is obliquely arranged in the N-pole middle cover, the static iron core and the N-pole static contact are arranged below the movable iron core, the static iron core is of a U-shaped structure, the N-pole static contact is arranged at the bottom of the static iron core in a penetrating mode, the instantaneous tripping torsion spring is arranged between the movable iron core and the static iron core, one end of the instantaneous tripping torsion spring is abutted to the extending end of the movable iron core, the other end of the instantaneous tripping torsion spring is abutted to the bottom of the static iron core, the middle end of the instantaneous tripping torsion spring and the mounting end of the movable iron core are fixedly mounted on the middle cover. The advantages are that: simple structure can make full use of the utmost point surplus space of N, under the prerequisite of guaranteeing the utmost point instantaneous dropout of N, only needs quiet iron core, moves the iron core part, convenient assembling.

Description

N-pole instantaneous-closing tripping device of integrated DPN small-sized residual-current circuit breaker

Technical Field

The utility model relates to a breaker claps and closes trip gear, especially relates to a small-size electric leakage circuit breaker N of integral type DPN utmost point is instantaneously clapped and is closed trip gear.

Background

At present, the DPN 36 mm integrated C65 type small-sized residual current circuit breaker has the main reason that the N pole part is mostly one pole which can be opened and closed only by a movable contact and does not have instantaneous and delayed tripping because the N pole part needs to be additionally provided with a residual current voltage coil, a magnetic ring, a circuit board and other parts, the space is small, no sufficient space is provided for arranging an instantaneous tripping device, in addition, even if the N pole part is provided with instantaneous release, the N pole part is mostly of a coil spiral tube type structure and comprises a plurality of parts such as a moving iron core, a coil framework, a coil, an iron core spring, an ejector rod and the like, and the assembly is complicated due to the fact that the spot welding process of the coil is added, on the basis of the prior art, a clapper type instantaneous tripping device is designed aiming at the urgent need of the N pole, which not only meets the requirement of a client on the N pole instantaneous tripping, meanwhile, the assembling structure is simple, the residual space of the N pole can be fully utilized, and the cost performance of the product is improved.

Disclosure of Invention

According to the urgent need in market, the utility model relates to an instantaneous dropout design simple structure for supplementing product safety demand and the instantaneous dropout that provides, make full use of N utmost point part residual space as far as under the prerequisite of guaranteeing the extremely instantaneous dropout of N to improve the little electric leakage circuit breaker N utmost point instantaneous tripping device of integral type DPN of product price/performance ratio.

Reach above-mentioned purpose, the utility model discloses a technical scheme be: an N-pole instantaneous slapping and tripping device of an integrated DPN miniature leakage circuit breaker comprises an N-pole middle cover, a movable iron core, a static iron core, an N-pole static contact, a shaft, a lock catch and an instantaneous tripping torsion spring, the N pole middle cover is of a square structure, the N pole middle cover is an outer protective shell of an N pole part in the breaker equipment, a movable iron core is obliquely arranged in the N pole middle cover, the extension end of the movable iron core is rectangular, the extension end of the movable iron core is used as an execution end of instantaneous tripping, the middle of the movable iron core is square, semicircular installation platforms are vertically arranged on the left side edge and the right side edge of the installation end of the movable iron core, circular holes are arranged on the two installation platforms, a static iron core and an N-pole static contact are arranged below the movable iron core, the static iron core is of a U-shaped structure, a U-shaped opening of the static iron core faces the movable iron core, two positioning convex shafts which are vertically arranged and are consistent in size are arranged at the bottom of the static iron core, and the N-pole static contact is arranged at the bottom of the static iron core in a penetrating mode; the left end of the N-pole static contact is a vertical rectangular plate, the middle of the N-pole static contact is a rectangular plate, a positioning hole for installing the positioning convex shaft is formed in the rectangular plate in the middle of the N-pole static contact, and the aperture of the positioning hole is matched with the outer diameter of the positioning convex shaft.

Further, move and be equipped with the instantaneous dropout torsional spring between iron core and the quiet iron core, instantaneous dropout torsional spring one end with move the iron core and stretch out the end and contradict, the instantaneous dropout torsional spring other end is contradicted bottom the quiet iron core, instantaneous dropout torsional spring middle end with move the iron core installation end and cover in through a fixed mounting, will move the iron core and hinge with quiet iron core through instantaneous dropout torsional spring and axle and be in the same place.

The utility model has the advantages that: simple structure can make full use of the utmost point surplus space of N, under the prerequisite of guaranteeing the utmost point instantaneous dropout of N, only needs quiet iron core, moves the iron core part, convenient assembling.

Drawings

FIG. 1 is a schematic view of the assembly structure of the present invention;

FIG. 2 is a schematic side view of the movable iron core of the present invention;

FIG. 3 is a schematic top view of the movable iron core of the present invention;

FIG. 4 is a schematic front view of the stationary core of the present invention;

fig. 5 is a schematic top view of the stationary core of the present invention;

FIG. 6 is a schematic side view of the stationary core of the present invention;

fig. 7 is a schematic side view of the N-pole stationary contact of the present invention;

fig. 8 is a schematic top view of the N-pole stationary contact of the present invention;

fig. 9 is a schematic structural view of the instant tripping torsion spring of the present invention;

fig. 10 is a schematic top view of the instant tripping torsion spring of the present invention;

in the figure: 1. an N pole middle cover; 2. a movable iron core; 201. an installation table; 202. a circular hole; 3. a stationary iron core; 301. positioning the convex shaft; 4. an N pole static contact; 401. positioning holes; 5. instantaneous tripping of the torsion spring; 6. a shaft; 7. and (5) locking.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in the attached drawings, the utility model discloses an integral type DPN miniature leakage circuit breaker N utmost point instantaneous clap-in trip gear, including N utmost point middle cover 1, move iron core 2, quiet iron core 3, N utmost point static contact 4, axle 5, hasp 6, instantaneous dropout torsional spring 7, N utmost point middle cover 1 is square structure, and N utmost point middle cover 1 is the outer protective housing of N utmost point part in the circuit breaker equipment, and the lid 1 is interior slope to be provided with moves iron core 2 in the N utmost point, move iron core 2 extension end is the rectangle, moves iron core 2 extension end and is as the execution end of instantaneous dropout, and move the middle square form that is of iron core 2, and the left and right sides limit of moving iron core 2 installation end all is equipped with semicircular mount 201 perpendicularly, all is equipped with round hole 202 on two mount pads, and round hole 202 is used for moving iron core 2's side dress, move iron core 2 below and be equipped with quiet iron core 3 and N utmost point static contact 4, quiet iron, the U-shaped opening of the static iron core 3 faces the movable iron core 2, two positioning convex shafts 301 which are vertically arranged and have the same size are arranged at the bottom of the static iron core 3, and an N-pole static contact 4 is arranged at the bottom of the static iron core 3 in a penetrating manner; the left end of the N-pole static contact 4 is a vertical rectangular plate, the middle of the N-pole static contact 4 is a rectangular plate, a positioning hole 401 for installing the positioning convex shaft 301 is formed in the rectangular plate in the middle of the N-pole static contact 4, the aperture of the positioning hole 401 is matched with the outer diameter of the positioning convex shaft 301, and the positioning and installation of the N-pole static contact 4 and the static iron core 3 are facilitated through the arrangement of the positioning convex shaft 301 and the positioning hole 401.

Further, an instantaneous trip torsion spring 5 is arranged between the movable iron core 2 and the static iron core 3, one end of the instantaneous trip torsion spring 5 is abutted against the extending end of the movable iron core 2, the other end of the instantaneous trip torsion spring 5 is abutted against the bottom of the static iron core 3, the middle end of the instantaneous trip torsion spring 5 and the mounting end of the movable iron core 2 are fixedly mounted on the middle cover through a shaft 6, the movable iron core 2 and the static iron core 3 are hinged together through the instantaneous trip torsion spring 5 and the shaft 6, when an overcurrent circuit occurs in a circuit breaker loop, the static iron core 3 generates a suction force through electromagnetic induction, the suction force drives the movable iron core 2 to approach the static iron core 3, the movable iron core 3 instantaneously rotates in an arc, the end of the movable iron core 3 contacts with the contact end of the lock catch 7 and drives the lock catch 6 to rotate anticlockwise for fast tripping, so that the breaker is switched off, after the breaker is switched off, when the suction force disappears, the movable iron core 2 returns to the initial position under the reaction force of the instantaneous tripping torsion spring 5; the instantaneous tripping device adopting the scheme has a simple structure, and only the movable iron core 2 and the static iron core 3 are needed on the premise of ensuring the N-pole instantaneous tripping, so that the assembly is convenient.

The utility model discloses a move the setting of iron core 2, quiet iron core 3, the static contact 4 of N utmost point, instantaneous dropout torsional spring 5, axle 6, hasp 7, wherein the static contact 4 of N utmost point passes the static iron core 3 of U type and lays on N utmost point well lid 1, passes axle 6 in addition and moves 2 round holes 202 of iron core and insert on N utmost point well lid 1, and the quiet iron core 3 is fixed a position on two locating holes 401 of static contact 4 of N utmost point through two location protruding axles 301 in addition; the final situation is that a static iron core 3, an N-pole static contact 4 and a movable iron core 2 are sequentially arranged at the middle and middle upper positions of an N-pole middle cover 1, wherein the movable iron core 2 and the static iron core 3 are hinged through a shaft 6, an instantaneous tripping torsion spring 5 is arranged on a contact surface between the movable iron core 2 and the static iron core 3, when an overcurrent circuit occurs in a circuit breaker loop, the static iron core 3 generates suction through electromagnetic induction, the suction drives the movable iron core 2 to approach the static iron core 3, in the arc instantaneous rotation process of the movable iron core 2, the end of the movable iron core 2 is in contact with the contact end of a lock catch 7 and drives the lock catch 7 to rotate anticlockwise and rapidly trip, so that the circuit breaker is opened, after the circuit breaker is disconnected, the suction disappears, and the movable iron core 2 returns to; the instantaneous tripping device adopting the scheme has a simple structure, and only the movable iron core 2 and the static iron core 3 are needed on the premise of ensuring the N-pole instantaneous tripping, so that the assembly is convenient.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a small-size electric leakage circuit breaker N utmost point instantaneous tripping device that claps of integral type DPN, includes lid, movable iron core, quiet iron core, the static contact of N utmost point, axle, instantaneous dropout torsional spring in the N utmost point, its characterized in that: the N utmost point is built-in to slope and is provided with and moves the iron core, it is equipped with quiet iron core and N utmost point static contact to move the iron core below, and the N utmost point static contact is worn to be equipped with in quiet iron core bottom, move and be equipped with instantaneous dropout torsional spring between iron core and the quiet iron core, instantaneous dropout torsional spring one end is contradicted with moving the iron core and stretching out the end, and the instantaneous dropout torsional spring other end is contradicted with quiet iron core bottom, and instantaneous dropout torsional spring middle-end is covered in with moving the iron core installation end through axle fixed mounting, will move the iron core and be in the same place with quiet.

2. The N-pole instantaneous slap-on trip device of the integrated DPN small residual current circuit breaker according to claim 1, characterized in that: the movable iron core is rectangular in extension end, the extension end of the movable iron core serves as an execution end of instantaneous tripping, the middle of the movable iron core is square, semicircular installation platforms are vertically arranged on the left side edge and the right side edge of the installation end of the movable iron core, and circular holes are formed in the two installation platforms.

3. The N-pole instantaneous slap-on trip device of the integrated DPN small residual current circuit breaker according to claim 1, characterized in that: the static iron core is of a U-shaped structure, the U-shaped opening of the static iron core faces the movable iron core, and two positioning protruding shafts which are vertically arranged and are consistent in size are arranged at the bottom of the static iron core.

4. The N-pole instantaneous slap-on trip device of the integrated DPN small residual current circuit breaker according to claim 1, characterized in that: the left end of the N-pole static contact is a vertical rectangular plate, the middle of the N-pole static contact is a rectangular plate, a positioning hole for installing the positioning convex shaft is formed in the rectangular plate in the middle of the N-pole static contact, and the aperture of the positioning hole is matched with the outer diameter of the positioning convex shaft.