CN107887234B

CN107887234B - Magnetic flux release

Info

Publication number: CN107887234B
Application number: CN201711323414.8A
Authority: CN
Inventors: 潘斌华; 顾翔; 唐丰田; 冯异
Original assignee: Zhejiang Chint Electrics Co Ltd; SEARI Electric Technology Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd; SEARI Electric Technology Co Ltd
Priority date: 2017-12-12
Filing date: 2017-12-12
Publication date: 2020-06-19
Anticipated expiration: 2037-12-12
Also published as: CN107887234A

Abstract

The invention relates to the technical field of circuit breakers, in particular to a magnetic flux release, which comprises a release shell, a magnetic flux unit, a push rod, a reset lever assembly and a reset guide rod, wherein the push rod, the reset lever assembly and the reset guide rod are matched with the magnetic flux unit; the magnetic flux unit acts, the push rod drives the push rod to rotate, one end of the reset guide rod clamps the push rod, the push rod pushes a mechanism tripping half shaft of the circuit breaker to rotate, so that a mechanism of the circuit breaker is tripped instantly, a mechanism rotating shaft of the mechanism rotates, a cantilever assembly arranged on the mechanism rotating shaft drives the reset lever assembly to act, the reset lever assembly impacts the push rod to reset the push rod, the other end of the reset guide rod is pressed downwards, the matching of the reset guide rod and the push rod is removed, and the push rod automatically resets; the magnetic flux release is simple in structure, the ejector rod of the magnetic flux unit is automatically reset, the opening state of the circuit breaker can be locked, and the safety is better.

Description

Magnetic flux release

Technical Field

The invention relates to the technical field of circuit breakers, in particular to a magnetic flux release, and particularly relates to a magnetic flux release mainly applied to a molded case circuit breaker and a frame circuit breaker.

Background

The magnetic flux release is mainly applied to a molded case circuit breaker and a frame circuit breaker.

In the prior art: the molded case circuit breaker is characterized in that a magnetic flux release is arranged on a middle cover, so that the structure is simpler, and the functions are fewer; the frame circuit breaker, the magnetic flux release is installed in the controller below, even as an organic whole with the controller, has restricted the spatial layout of controller on the one hand, and on the other hand makes the circuit breaker whole high, and simultaneously, only when mechanism tripping semi-axis is nearer apart from the cantilever subassembly, the magnetic flux release just can use.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a magnetic flux release which is simple in structure, realizes automatic reset of a mandril of a magnetic flux unit, can lock the opening state of a circuit breaker and is better in safety.

In order to achieve the purpose, the invention adopts the following technical scheme:

a magnetic flux release comprises a release shell 1, a magnetic flux unit 3 arranged in the middle of the release shell 1, a push rod 6, a reset lever assembly 4 and a reset guide rod 5, wherein the push rod 6, the reset lever assembly 4 and the reset guide rod 5 are arranged in the release shell 1 and matched with the magnetic flux unit 3;

the magnetic flux unit 3 acts, the push rod 31 drives the push rod 6 to rotate, one end of the reset guide rod 5 clamps the push rod 6, the push rod 6 pushes a mechanism tripping half shaft 90 of the circuit breaker to rotate, a mechanism of the circuit breaker is tripped instantly, a mechanism rotating shaft 92 of the mechanism rotates, a cantilever assembly 93 arranged on the mechanism rotating shaft 92 drives the reset lever assembly 4 to act, the reset lever assembly 4 impacts the push rod 31 to reset, the other end of the reset guide rod 5 is pressed down, the matching between the reset guide rod 5 and the push rod 6 is removed, and the push rod 6 automatically resets.

Preferably, the device further comprises a second micro switch 22 arranged above the reset guide rod 5 and matched with the reset guide rod, one end of the reset guide rod 5 clamps the push rod 6, the second micro switch 22 is switched off, the reset guide rod 5 releases the push rod 6, and the second micro switch 22 is switched on.

Preferably, the reset lever assembly 4 comprises a first lever 41, a second lever 42 disposed above the first lever 41 and drivingly connected to the first lever 41, and a third lever 43 drivingly connected to the second lever 42, wherein the first lever 41, the second lever 42, and the third lever 43 are all rotatably mounted on the trip housing 1;

the cantilever assembly 93 drives the first lever 41 to rotate, the first lever 41 drives the second lever 42 to rotate, the second lever 42 drives the third lever 43 to rotate, and the third lever 43 impacts the top rod 31 to reset the top rod.

Preferably, the first lever 41 includes a first lever main board 412 and a first lever force-receiving portion 411 disposed at one end of the first lever main board 412, the first lever force-receiving portion 411 is matched with the cantilever assembly 93 of the circuit breaker, and the other end of the first lever main board 412 is rotatably mounted on the trip housing 1;

the second lever 42 comprises a second lever beam 420 and two second lever transmission arms 421 respectively arranged at two ends of the second lever beam 420, and the middle parts of the two second lever transmission arms 421 are rotatably mounted on the trip unit housing 1 and respectively arranged at two sides of one end of the magnetic flux unit 3;

the third lever 43 includes a third lever beam 430 and two third lever transmission arms 431 respectively disposed at two ends of the third lever beam 430, a third lever top plate 433 for resetting the push rod 31 is disposed in the middle of the third lever beam 430, the two third lever transmission arms 431 are rotatably mounted on the trip housing 1 and respectively disposed at two sides of the other end of the magnetic flux unit 3, and one end of the third lever transmission arm 431 is drivingly connected to one end of the second lever transmission arm 421.

Preferably, the tripping device also comprises a first rotating shaft 24 and a second rotating shaft 27 which are inserted on the tripping device shell 1;

the first lever 41, the second lever 42 and the reset guide rod 5 are rotatably mounted on the trip unit housing 1 through the first rotating shaft 24, and the third lever 43 and the push rod 6 are rotatably mounted on the trip unit housing 1 through the second rotating shaft 27.

Preferably, one end of the second lever transmission arm 421 is connected to the second lever beam 420, the other end of the second lever transmission arm is provided with a second lever pressing plate 422 connected to the second lever beam in a bending manner, and the second lever pressing plate 422 is connected to the third lever transmission arm 431 in a driving manner;

one end of the third lever transmission arm 431 close to the second lever 42 is elastically connected to the trip unit housing 1 through a third lever return spring 47.

Preferably, the first lever main plate 412 and the second lever cross beam 420 are connected through a transmission connecting piece 44, a transmission pressure spring 45 is sleeved on the transmission connecting piece 44, and the upper end and the lower end of the transmission pressure spring 45 are respectively connected with the second lever cross beam 420 and the first lever main plate 412.

Preferably, the first lever force-receiving portion 411 is an annular structure formed by bending one end of the first lever main plate 412, and a free end of the annular structure abuts against a lower side of the first lever main plate 412.

Preferably, the push rod 6 comprises a push rod main board 600, one end of the push rod main board 600 is in limit fit with the reset guide rod 5, and the other end of the push rod main board 600 is matched with a mechanism tripping half shaft 90 of the circuit breaker;

the lower end of the push rod main board 600 is rotatably mounted on the release housing 1, the middle part of the upper end is provided with a U-shaped groove 60 matched with the push rod 31 of the magnetic flux unit 3, and the bottom of the U-shaped groove 60 is provided with a top board channel 61 allowing a third lever top board 433 of the third lever 43 to pass through;

one end of the push rod main board 600 is provided with a guide rod clamping groove 65 in limit fit with the reset guide rod 5, the other end of the push rod main board is provided with a push rod jacking rib 64 for driving the mechanism tripping half shaft 90 to rotate, and the guide rod clamping groove 65 and the push rod jacking rib 64 are respectively arranged on two sides of the push rod main board 600.

Preferably, a guide rod reset groove 66 is further formed above the guide rod clamping groove 65, and a separation rib 67 is arranged between the guide rod clamping groove 65 and the guide rod reset groove 66;

the lower end of the push rod main board 600 is elastically connected with the release casing 1 through a push rod reset torsion spring 8.

Preferably, the partition rib 67 is a semi-cylindrical structure, the first surface 62 and the second surface 63 are respectively disposed on two outer sides of the top plate channel 61, the upper end of the first surface 62 is inclined towards the U-shaped groove 60, and the second surface 63 is parallel to the bottom surface of the U-shaped groove 60.

Preferably, the reset guide rod 5 comprises a first reset guide rod arm 520 and a second reset guide rod arm 500 bent and connected with the first reset guide rod arm 520, one end of the first reset guide rod arm 520, far away from the second reset guide rod arm 500, is provided with a reset guide rod clamping hand 52 in spacing fit with the push rod 6, one end of the second reset guide rod arm 500, far away from the first reset guide rod arm 520, is provided with a reset guide rod touching hand 50 for triggering the second microswitch 22, the middle part of the second reset guide rod arm 500 is provided with a reset guide rod reset plate 51, the lower side of the reset guide rod reset plate 51 is elastically connected with the trip casing 1 through a reset guide rod reset spring 50a, and the joint of the first reset guide rod arm 520 and the second reset guide rod arm 500 is rotatably installed on the trip casing 1.

Preferably, the reset guide rod clamping hand 52 is connected with the reset guide rod first arm 520 in a bending way and extends towards the same direction with the reset guide rod second arm 500, and the reset guide rod clamping hand 52 is of a wedge-shaped structure and comprises an arc-shaped side face matched with the push rod 6.

Preferably, the reset guide rod reset plate 51 is connected with the reset guide rod second arm 500 at a right angle, a spring limit boss 53 is arranged on the lower side of the reset guide rod reset plate 51, the upper end of the reset guide rod reset spring 50a is sleeved on the spring limit boss 53, and the lower end of the reset guide rod reset spring is arranged on the release casing 1.

Preferably, the circuit breaker further comprises a first microswitch 21 arranged above and matched with the second lever 42 of the reset lever assembly 4, the magnetic flux unit 3 acts, the push rod 31 drives the push rod 6 to rotate, the push rod 6 pushes a mechanism tripping half shaft 90 of the circuit breaker to rotate, so that a mechanism of the circuit breaker is tripped instantly, the mechanism rotating shaft 92 rotates, a cantilever assembly 93 arranged on the mechanism rotating shaft 92 drives the first lever 41 of the reset lever assembly 4 to rotate, and the first lever 41 drives the second lever 42 of the reset lever assembly 4 to rotate, so that the first microswitch 21 is changed from being disconnected to being closed.

Preferably, the trip unit housing 1 includes a magnetic flux unit mounting groove 103 disposed at a middle portion thereof, a push rod mounting groove disposed at an outer side of one end of the magnetic flux unit mounting groove 103, a lever mounting groove disposed at an outer side of the other end of the magnetic flux unit mounting groove 103, and a reset guide rod mounting groove disposed at one side of the magnetic flux unit mounting groove 103, both ends of the reset guide rod mounting groove are respectively communicated with the push rod mounting groove and the lever mounting groove, the first lever 41 and the second lever 42 of the reset lever assembly 4 are rotatably mounted in the lever mounting groove, the push rod 6 and the third lever 43 of the reset lever assembly 4 are rotatably installed in the push rod installation groove, the reset guide rod 5 is rotatably installed in the reset guide rod installation groove, the two second lever transmission arms 421 of the second lever 42 are respectively arranged at both sides of one end of the magnetic flux unit installation groove 103, and the two third lever transmission arms 431 of the third lever 43 are respectively arranged at both sides of the other end of the magnetic flux unit installation groove 103.

Preferably, the release housing 1 further includes a second microswitch mounting structure disposed above the reset guide bar mounting groove and a first microswitch mounting structure disposed above the lever mounting groove.

Preferably, the second microswitch mounting structure comprises a second microswitch mounting groove 101 arranged on one side of the magnetic flux unit mounting groove 103 and a second microswitch clamping arm 102 arranged on one side of the second microswitch mounting groove 101, and a second microswitch hook is arranged at the upper end of the second microswitch clamping arm 102.

Preferably, the first microswitch mounting structure comprises a first microswitch fixing piece and a combined clamping groove which is arranged on the release shell 1 and matched with the first microswitch fixing piece;

the first microswitch fixing piece comprises a fixing piece side plate, fixing piece clamping pins 232 arranged at two ends of the fixing piece side plate and a first microswitch limiting column 231 arranged in the middle of the fixing piece side plate, and the fixing piece clamping pins 232 and the first microswitch limiting column 231 extend towards one side of the fixing piece side plate;

the combined clamping groove comprises a first clamping hole 107 matched with the clamping pin 232 of the fixing piece and a limit column insertion hole 107a matched with the limit column 231 of the first microswitch.

Preferably, the magnetic flux unit 3 is arranged in the middle of the release housing 1, the reset lever assembly 4 is arranged around the magnetic flux unit 3, the push rod 6 is arranged outside one end of the magnetic flux unit 3, and the reset guide rod 5 is arranged on one side of the magnetic flux unit 3 and one end of the reset guide rod is in limit fit with the push rod 6.

Preferably, the circuit breaker further comprises a lever member 91 arranged between the push rod 6 and the mechanism tripping half shaft 90, one end of the lever member 91 is rotatably arranged, the push rod 6 drives the lever member 91 to rotate, and the lever member 91 drives the mechanism tripping half shaft 90 to rotate, so that the mechanism of the circuit breaker is tripped instantaneously.

The magnetic flux release comprises a release shell, a magnetic flux unit, a push rod, a reset lever assembly and a reset guide rod, the magnetic flux release is simple in structure and can be independently installed, the reset lever assembly achieves automatic reset of the push rod, the automation degree is higher, the reset guide rod is matched with the push rod, after a breaker is opened, the matching of the reset guide rod and the push rod is removed only after a circuit fault is eliminated, the breaker can be closed again, the locking of the opening state of the breaker is achieved, and the electricity utilization safety of a user is improved. In addition, the magnetic flux release also comprises a second microswitch which is matched with the reset guide rod and can indicate the opening state of the circuit breaker and the position of the reset guide rod, and the magnetic flux release also comprises a first microswitch which is matched with a second lever of the reset lever assembly and can indicate the state of the reset lever assembly, so that a user can observe and judge faults conveniently.

Drawings

Fig. 1 is a schematic structural diagram of a novel magnetic flux release when a circuit breaker is in a closing state according to the invention;

fig. 2 is a schematic structural diagram of a reset lever assembly and a magnetic flux unit when the circuit breaker of the present invention is in a closing state;

fig. 3 is a schematic structural diagram of the magnetic flux release according to the present invention, after the magnetic flux release executes a release command, the circuit breaker is in an open state and the push rod is reset;

fig. 4 is a schematic structural diagram of the reset lever assembly and the magnetic flux unit when the circuit breaker is in an open state after the magnetic flux release executes a release command according to the present invention;

FIG. 5 is a schematic diagram of a structure of the reset guide rod, the push rod and the second microswitch when the circuit breaker is in a closing state;

fig. 6 is a schematic view of the matching structure of the reset guide rod, the push rod and the second microswitch when the circuit breaker is in the opening state after the magnetic flux release executes the release command;

fig. 7 is a schematic view of the cooperating structure of the reset lever assembly and the first microswitch when the circuit breaker is in the open state after the magnetic flux release executes the release command according to the present invention;

fig. 8 is a schematic view of a matching structure of the reset lever assembly and the first microswitch when the circuit breaker of the present invention is in a closing state;

FIG. 9 is a schematic structural view of the putter of the present invention;

FIG. 10 is a schematic view of another construction of the putter of the present invention;

FIG. 11 is a schematic view of the reset guide of the present invention;

FIG. 12 is a schematic view of the first lever of the present invention;

FIG. 13 is a schematic view of a first microswitch mounting assembly of the present invention;

fig. 14 is a schematic structural view of a trip unit housing of the present invention;

fig. 15 is a schematic view of an assembly structure of the magnetic flux release and the circuit breaker when the circuit breaker of the present invention is in an opening state.

Detailed Description

Embodiments of the magnetic flux release of the present invention are further described below in conjunction with the embodiments illustrated in fig. 1-14. The magnetic flux release of the present invention is not limited to the description of the following embodiments.

The magnetic flux release comprises a release shell 1, a magnetic flux unit 3 arranged in the middle of the release shell 1, a push rod 6, a reset lever assembly 4 and a reset guide rod 5, wherein the push rod 6, the reset lever assembly 4 and the reset guide rod 5 are arranged in the release shell 1 and matched with the magnetic flux unit 3;

the magnetic flux unit 3 acts, the push rod 31 drives the push rod 6 to rotate, one end of the reset guide rod 5 clamps the push rod 6, the push rod 6 pushes a mechanism tripping half shaft 90 of the circuit breaker to rotate, a mechanism of the circuit breaker is tripped instantly, a mechanism rotating shaft 92 of the mechanism rotates towards the direction of the mechanism, a cantilever assembly (93) arranged on the mechanism rotating shaft 92 drives the reset lever assembly 4 to act, the reset lever assembly 4 impacts the push rod 31 to reset the push rod, the other end of the reset guide rod 5 is pressed down, the matching between the reset guide rod 5 and the push rod 6 is removed, and the push rod 6 automatically resets.

The magnetic flux release comprises a release shell, a magnetic flux unit, a push rod, a reset lever assembly and a reset guide rod, the magnetic flux release is simple in structure and can be independently installed, the reset lever assembly achieves automatic reset of the push rod, the reset guide rod is matched with the push rod, only after circuit faults are eliminated, the matching of the reset guide rod and the push rod is removed, the circuit breaker can be switched on again, and the power utilization safety of users is improved.

As shown in fig. 1 and 3, the magnetic flux release of the present invention includes a release housing 1, a magnetic flux unit 3 disposed in the middle of the release housing 1, and a reset lever assembly 4, a reset guide rod 5, and a push rod 6 rotatably mounted on the release housing 1.

As shown in fig. 2 and 4, the reset lever assembly 4 includes a first lever 41, a second lever 42 disposed above the first lever 41, and a third lever 43 drivingly connected to the second lever 42;

the first lever 41 comprises a first lever main plate 412, and a first lever force-receiving portion 411 is arranged at one end of the first lever main plate 412; the second lever 42 comprises a second lever beam 420 and two second lever transmission arms 421 respectively arranged at two ends of the second lever beam 420; the third lever 43 comprises a third lever beam 430, two third lever transmission arms 431 arranged at two ends of the third lever beam 430, and a third lever top plate 433 arranged in the middle of the third lever beam 430, wherein the third lever transmission arms 431 are connected with the second lever transmission arms 421 in a driving manner.

Preferably, as shown in fig. 2 and 4, the first lever main plate 411 is connected to the second lever cross beam 420 through a transmission connector 44, a transmission compression spring 45 is sleeved on the transmission connector 44, the transmission compression spring 45 is located between the first lever main plate 411 and the second lever cross beam 420, the upper end of the transmission compression spring is connected to the second lever cross beam 420, and the lower end of the transmission compression spring is connected to the first lever main plate 411.

It should be noted that the transmission connecting member 44 and the transmission pressure spring 45 are arranged in groups, and multiple groups may be arranged.

As shown in fig. 14, the trip unit housing 1 includes a magnetic flux unit mounting groove 103 disposed at a middle portion thereof, a push rod mounting groove disposed at a left side of the magnetic flux unit mounting groove 103, a lever mounting groove disposed at a right side of the magnetic flux unit mounting groove 103, and a reset guide mounting groove disposed at a rear side of the magnetic flux unit mounting groove 103.

Preferably, as shown in fig. 1 and 3, a first rotating shaft 24 is inserted in the lever mounting groove, and a second rotating shaft 27 is inserted in the push rod mounting groove; the first lever 41 and the second lever 42 are rotatably installed in the lever installation grooves by the first rotating shaft 24, the reset guide 5 is rotatably installed in the reset guide installation grooves by the first rotating shaft 24, and the push rod 6 and the third lever 43 are rotatably installed in the push rod installation grooves by the second rotating shaft 27.

It should be noted that the first lever 41, the second lever 42, the third lever 43, the reset guide 5 and the push rod 6 can also be rotatably mounted on the trip housing 1 through a rotating shaft of their own structure and through the rotating shaft, which belongs to the prior art and will not be described in detail again.

As shown in fig. 1 to 4, the magnetic flux unit 3 includes a plunger 31 provided at a middle portion thereof.

As shown in fig. 5 and 6, the reset guide bar 5 includes a reset guide bar reset plate 51 disposed at the left end thereof and a reset guide bar locking hand 52 disposed at the right end thereof, the lower side of the reset guide bar reset plate 51 is elastically connected to the trip unit housing 1 through a reset guide bar reset spring 50a, and the reset guide bar locking hand 52 is in limit fit with the push rod 6.

As shown in fig. 10, the push rod 6 includes a guide rod engaging groove 65 disposed at the left end thereof to engage with the reset guide rod engaging hand 52, a guide rod reset groove 66 disposed above the guide rod engaging groove 65, and a U-shaped groove 60 disposed at the middle of the upper side of the push rod to engage with the top rod 31 of the magnetic flux unit 3, and a top plate channel 61 is disposed at the bottom of the U-shaped groove 60.

Preferably, as shown in fig. 1 and 3, the push rod 6 is connected with the trip unit housing 1 through a push rod reset torsion spring 8. Of course, the push rod 6 may also be connected to the trip unit housing 1 by a tension spring to reset the push rod 6.

Preferably, as shown in fig. 15, the magnetic flux release of the present invention further includes a lever member 91 disposed between the push rod 6 and the mechanism release half shaft 90, the upper end of the lever member 91 is rotatably disposed, the lower end of the lever member 91 is in driving fit with the push rod 6, the middle portion of the right side of the lever member 91 is in driving fit with the mechanism release half shaft 90, the push rod 6 drives the lever member 91 to rotate, and the lever member 91 drives the mechanism release half shaft 90 to rotate, so that the mechanism of the circuit breaker is instantaneously released.

The lever member 9 enables the magnetic flux release of the invention to be normally assembled and used under the condition that the distance between the mechanism release half shaft 90 of the circuit breaker and the cantilever assembly 93 is relatively long, thereby widening the application scene of the magnetic flux release of the invention.

As shown in fig. 1-4, 5-8 and 15, the magnetic flux release of the present invention operates as follows:

the magnetic flux unit 3 acts after receiving a tripping instruction of a controller of the circuit breaker, the push rod 31 drives the push rod 6 to rotate, along with the rotation of the push rod 6, the reset guide rod clamping hand 52 of the reset guide rod 5 is clamped into the guide rod clamping groove 65 through the guide rod reset groove 66 to limit the reset of the push rod 6, the push rod 6 pushes the mechanism tripping half shaft 90 of the circuit breaker to rotate, so that a mechanism of the circuit breaker is tripped instantly, a mechanism rotating shaft 92 of the mechanism rotates towards the mechanism direction, a cantilever assembly 93 arranged on the mechanism rotating shaft 92 drives the first lever 41 to rotate through the first lever stress part 411, the transmission compression spring 45 is compressed, the transmission compression spring 45 drives the second lever 42 to rotate, the second lever 42 drives the third lever 43 to rotate through the matching of the second lever transmission arm 421 and the third lever transmission arm 431, and the third lever top plate 433 moves towards the push rod 31. Because the reset guide rod 5 is in limit fit with the push rod 6, the circuit breaker cannot be switched on again, after a circuit fault is eliminated, the reset guide rod reset plate 51 is pressed, the reset guide rod clamping hand 52 moves into the guide rod reset groove 66 from the guide rod clamping groove 65, the push rod 6 automatically resets, and the circuit breaker can be switched on again.

Preferably, as shown in fig. 7 and 8, the magnetic flux release of the present invention further includes a first microswitch 21 for indicating the status of the reset lever assembly 4.

The first microswitch 21 is arranged above the second lever 42, a gap exists between the second lever beam 420 of the second lever 42 and the first microswitch 21 under the closing state of the circuit breaker, the first microswitch 21 is disconnected at the moment, after the circuit breaker is opened, the cantilever assembly 93 of the circuit breaker drives the first lever 41 to rotate through the first lever stress part 411, the first lever 41 drives the second lever 42 to rotate through the transmission connecting piece 44, the second lever beam 420 moves upwards, and the first microswitch 21 is closed.

Preferably, as shown in fig. 5 and 6, the magnetic flux release of the present invention further includes a second micro switch 22 disposed above the reset guide rod 5, and configured to indicate a state of the reset guide rod 5 and a closing/opening state of the circuit breaker, where the reset guide rod 5 includes a reset guide rod tentacle 50 cooperating with the second micro switch 22, and in the closing state of the circuit breaker, the reset guide rod tentacle 50 closes the second micro switch 22, and after the circuit breaker opens, the push rod 6 rotates, and the reset guide rod 5 rotates, so that the reset guide rod tentacle 50 is separated from the second micro switch 22, and the second micro switch 22 is opened.

The components of the magnetic flux release of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 2, the magnetic flux unit 3 includes a magnetic flux unit mounting seat 32 provided at one end thereof and a plunger 31 provided at a middle portion thereof.

As oriented in fig. 2 and 4, the reset lever assembly 4 includes a first lever 41 disposed outside the right end of the flux unit 3, a second lever 42, and a third lever 43 disposed outside the left end of the flux unit 3.

As shown in fig. 12, the first lever 41 includes a first lever main plate 412, a first lever receiving portion 411 disposed at the left end of the first lever main plate 412, and a first lever rotating leg 413 disposed at the right end of the first lever main plate 412, and the first lever rotating leg 413 is rotatably disposed on the first rotating shaft 24 and a first connecting hole 414 engaged with the transmission connecting member 44 is disposed at the middle of the first lever main plate 412.

Preferably, the first lever force-receiving portion 411 is an annular structure formed by bending the right end of the first lever main plate 412, and the free end of the annular structure abuts against the lower side surface of the first lever main plate 412, so that the first lever force-receiving portion 411 has strong deformation resistance.

Preferably, the number of the first lever rotating legs 413 is two, and the two first lever rotating legs are respectively arranged on two sides of the right end of the first lever main plate 412 and connected to the first lever main plate 412 in a bending manner.

Preferably, the basic shape of the first lever 41 of the present invention may be formed by stamping, and then performing a corresponding bending operation, which is convenient for processing.

As shown in fig. 2 and 4, the second lever 42 includes a second lever beam 420 and two second lever transmission arms 421 respectively disposed at two ends of the second lever beam 420 and connected to the second lever beam in a bending manner, a middle portion of the second lever transmission arm 421 is rotatably disposed on the first rotating shaft 24, a second connection hole is disposed in a middle portion of the second lever beam 420, and the second connection hole is a kidney-shaped hole.

Preferably, as shown in fig. 2 and 4, a second lever pressing plate 422 connected to the third lever transmission arm 431 of the third lever 43 in a driving manner is disposed at the right end of the second lever transmission arm, and the second lever pressing plate 422 is connected to the second lever transmission arm 421 in a bending manner and extends in a direction away from the magnetic flux unit 3.

Preferably, the basic shape of the second lever 42 can be formed by stamping and then subjected to the necessary bending operations, facilitating the machining.

As shown in fig. 2 and 4, the third lever 43 includes a third lever beam 430 and two third lever transmission arms 431 respectively disposed at two ends of the third lever beam 430, one end of the third lever transmission arm 431 close to the third lever beam 430 is rotatably connected to the second rotating shaft 27, a third lever top plate 433 is disposed at an upper side of a middle portion of the third lever beam 430, where the middle portion of the third lever 431 is connected to the trip unit housing 1 through a third lever return spring 47, and the third lever top plate 433 is connected to the third lever beam 430 through a third lever connecting plate 432.

Preferably, as shown in fig. 2 and 4, a third lever rotating leg is disposed at a lower side of an end of the third lever transmission arm 431 close to the third lever beam 430, and is rotatably connected to the second rotating shaft 27.

Preferably, the basic shape of the third lever 43 can be formed by stamping and then subjected to the necessary bending operations, facilitating the machining.

Preferably, a reinforcing structure is arranged at the bending structure of the first lever 41, the second lever 42 and the third lever 43.

As shown in fig. 9 and 10, one embodiment of the push rod 6 of the present invention is shown.

Fig. 10 is a schematic view of a structure of one side of the push rod 6 according to the present invention.

The push rod 6 comprises a push rod main board 600, a push rod shaft hole 68 matched with the second rotating shaft 27 is formed in the lower end of the push rod main board 600, a U-shaped groove 60 matched with the push rod 31 is formed in the middle of the upper side of the push rod main board 600, a guide rod clamping groove 65 is formed in the middle of the right end of the push rod main board 600, a guide rod reset groove 66 is formed above the guide rod clamping groove 65, and a separation rib 67 is arranged between the guide rod clamping groove 65 and the guide rod.

Preferably, the partition rib 67 has a semi-cylindrical structure, which helps to reduce the contact friction between the partition rib 67 and the reset guide bar catch 52 of the reset guide bar 5.

Fig. 9 is a schematic view of the structure of the other side of the push rod 6 according to the present invention.

The right end of the push rod main board 600 is provided with a push rod jacking rib 64, the push rod jacking rib 64 is used for pushing a mechanism tripping half shaft 90 of the circuit breaker to rotate, and the bottom of the U-shaped groove 60 is provided with a top plate channel 61 allowing a third lever top plate 433 of the third lever 43 to penetrate through.

Preferably, a reinforcing rib is arranged at the joint of the push rod jacking rib 64 and the push rod main board 600, and the push rod jacking rib 64 is of an obtuse triangle structure.

Preferably, the first surface 62 and the second surface 63 are respectively arranged on two sides of the outer portion of the top plate channel 61, the upper end of the first surface inclines towards the direction of the U-shaped groove 60 and is used for avoiding the third lever connecting plate 432, and the second surface 63 is parallel to the bottom surface of the U-shaped groove 60, so that the reliability of the third lever top plate 433 reset ejector rod 31 is improved.

Preferably, as shown in fig. 9 and 10, an escape opening for escaping the third lever transmission arm 431 of the third lever 43 is provided at the lower side of the push rod main plate 600.

Fig. 11 shows an embodiment of the reset guide bar 5 of the present invention.

The reset guide rod 5 comprises a first reset guide rod arm 520 and a second reset guide rod arm 500 which is connected with the first reset guide rod arm 520 at a right angle, a reset guide rod reset plate 51 is arranged in the middle of the second reset guide rod arm 500, the joint of the first reset guide rod arm 520 and the second reset guide rod arm 500 is in rotating fit with the first rotating shaft 24, a reset guide rod clamping hand 52 which is in limit fit with the push rod 6 is arranged at the left end of the first reset guide rod arm 520, and a reset guide rod touching hand 50 which is used for triggering the second micro switch 22 is arranged at the upper end of the second reset guide rod arm 500.

Preferably, the guide arm card hand 52 that resets is the wedge structure, set up perpendicularly in the first arm 520 top of guide arm that resets, the wedge structure include with push rod 6 complex arc side, the junction of the guide arm card hand 52 that resets and the first arm 520 of guide arm that resets sets up first spacing groove 55, under the circuit breaker on-state, the arc side of the guide arm card hand 52 that resets sets up in guide arm reset groove 66, first spacing groove 55 with separate muscle 67 block, after the circuit breaker separating brake, the arc side lower extreme of the guide arm card hand 52 that resets is located guide arm draw-in groove 65, the upper end is located guide arm reset groove 66, the arc side with separate muscle 67 butt.

Preferably, a spring limiting boss 53 is arranged on the lower side of the right end of the reset guide rod reset plate 51, the reset guide rod reset plate 51 is connected with the release casing 1 through a reset guide rod reset spring 50a, the upper end of the reset guide rod reset spring 50a is sleeved on the spring limiting boss 53, and the lower end of the reset guide rod reset spring is arranged on the release casing 1.

Preferably, the reset guide bar tentacle 50 is a platform disposed at the upper end of the reset guide bar second arm 500.

Preferably, the first reset guide arm 520 and the second reset guide arm 500 are both cross-shaped structures, so that the structure is firm and light, and reinforcing ribs are arranged at the joint of the reset guide rod clamping hand 52 and the first reset guide arm 520 and the joint of the reset guide rod reset plate 51 and the second reset guide arm 500.

Preferably, a reset guide boss 54 is provided at the junction of the reset guide first arm 520 and the reset guide second arm 500, which is rotatably coupled to the first shaft 24.

Fig. 14 shows an embodiment of the trip unit case 1 according to the present invention.

The release shell 1 comprises a magnetic flux unit mounting groove 103 arranged in the middle of the magnetic flux unit mounting groove, a push rod mounting groove arranged on the left side of the magnetic flux unit mounting groove 103, a lever mounting groove arranged on the right side of the magnetic flux unit mounting groove 103 and a reset guide rod mounting groove arranged on the rear side of the magnetic flux unit mounting groove 103, the left end and the right end of the reset guide rod mounting groove are respectively communicated with the push rod mounting groove and the lever mounting groove, a first partition plate and a second partition plate are respectively arranged between the magnetic flux unit mounting groove 103 and the push rod mounting groove and between the magnetic flux.

Preferably, the bottom of the push rod installation groove is provided with a second rotating shaft seat matched with the second rotating shaft 27, and the bottom of the lever installation groove is provided with a first rotating shaft seat matched with the first rotating shaft.

Preferably, an assembly U-shaped groove 104 is formed in the middle of the upper side of the first partition plate, and the assembly U-shaped groove 104 is in clamping fit with the magnetic flux unit mounting seat 32 of the magnetic flux unit 3.

Preferably, the bottom of the magnetic flux unit mounting groove 103 is provided with a mounting and dismounting through hole 108, and the magnetic flux unit 3 can be ejected out of the mounting and dismounting through hole 108 when the magnetic flux unit 3 is dismounted from the magnetic flux unit mounting groove 103, so that the operation is convenient.

Preferably, the trip unit housing 1 further comprises a magnetic flux unit cover plate 7, one end of the magnetic flux unit cover plate 7 is connected with the trip unit housing 1 through a screw, and the other end is inserted into the magnetic flux unit mounting groove 103.

Preferably, a spring fixing groove 105 matched with the return guide rod return spring 50a is further formed at the right end of the return guide rod mounting groove, and the lower end of the return guide rod return spring 50a is arranged in the spring fixing groove 105.

Preferably, the release housing 1 further includes a first microswitch mounting structure disposed above the front side of the lever mounting groove and a second microswitch mounting structure disposed above the reset guide bar mounting groove.

The first microswitch mounting structure comprises a first microswitch fixing piece and a combined clamping groove which is arranged on the release shell 1 and matched with the first microswitch fixing piece.

As shown in fig. 13, the first microswitch fixing part comprises a fixing part side plate, a fixing part cover plate 233 is arranged in the middle of the upper side of the fixing part side plate, two fixing part clamping feet 232 are respectively arranged at the left end and the right end of the fixing part side plate, a first microswitch limiting column 231 is arranged in the middle of the fixing part side plate, the two fixing part clamping feet 232 at one end of the fixing part side plate are arranged in parallel at intervals, a hook which is bent upwards is arranged at the tail end of the fixing part clamping foot 232 at the top, a hook which is bent downwards is arranged at the tail end of the fixing part clamping foot 232 at the bottom, two first microswitch limiting columns 231.

As shown in fig. 14, the combination card slot includes two first card holes 107 matching with the fixing member card feet 232 and two limit post insertion holes 107a matching with the first microswitch limit post 231 and arranged between the two first card holes 107.

During installation, the first microswitch 21 is installed in the first microswitch fixing member, and then the first microswitch fixing member is fixed on the trip unit housing 1 through the cooperation of the fixing member clamping foot 232 and the first buckle 107.

Preferably, as shown in fig. 14, the second microswitch mounting structure includes a second microswitch mounting groove 101 disposed above the reset guide bar mounting groove, a second microswitch clamping arm 102 extending upward is disposed in the middle of the front side of the second microswitch mounting groove 101, a second microswitch hook extending rearward is disposed at the end of the second microswitch clamping arm 102, the second microswitch 22 is mounted in the second microswitch mounting groove 101, and the second microswitch hook is clamped on the upper side of the second microswitch 22.

It should be noted that the magnetic flux release of the present invention, the structure of the release housing 1, the layout of the push rod 6, the reset lever assembly 4, the reset guide rod 5, the first microswitch 21 and the second microswitch 22, and the assembly of the above components and the release housing 1 are favorable for further reducing the occupied space and height of the magnetic flux release of the present invention, and are favorable for the design and distribution of the internal space of the circuit breaker.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. A magnetic flux release, characterized by: the magnetic flux tripper comprises a tripper shell (1), a magnetic flux unit (3) arranged in the middle of the tripper shell (1), and a push rod (6), a reset lever assembly (4) and a reset guide rod (5) which are arranged in the tripper shell (1) and matched with the magnetic flux unit (3), wherein the magnetic flux unit (3) comprises a push rod (31) used for driving the push rod (6), and the push rod (6) and the reset guide rod (5) are both rotatably arranged on the tripper shell (1);

the magnetic flux unit (3) acts, the push rod (31) drives the push rod (6) to rotate, one end of the reset guide rod (5) clamps the push rod (6), the push rod (6) pushes a mechanism tripping half shaft (90) of the circuit breaker to rotate, a mechanism of the circuit breaker is enabled to trip instantly, a mechanism rotating shaft (92) of the mechanism rotates, a cantilever assembly (93) arranged on the mechanism rotating shaft (92) drives the reset lever assembly (4) to act, the reset lever assembly (4) impacts the push rod (31) to enable the push rod to reset, the other end of the reset guide rod (5) is pressed downwards, the matching of the reset guide rod (5) and the push rod (6) is relieved, and the push rod (6) resets automatically.

2. The magnetic flux release of claim 1, wherein: the automatic reset device is characterized by further comprising a second micro switch (22) which is arranged above the reset guide rod (5) and matched with the reset guide rod, wherein one end of the reset guide rod (5) is tightly clamped with the push rod (6), the second micro switch (22) is disconnected, the reset guide rod (5) releases the push rod (6), and the second micro switch (22) is closed.

3. The magnetic flux release of claim 1, wherein: the reset lever assembly (4) comprises a first lever (41), a second lever (42) arranged above the first lever (41) and connected with the first lever in a driving mode, and a third lever (43) connected with the second lever (42) in a driving mode, wherein the first lever (41), the second lever (42) and the third lever (43) are all rotatably installed on the release shell (1);

the cantilever assembly (93) drives the first lever (41) to rotate, the first lever (41) drives the second lever (42) to rotate, the second lever (42) drives the third lever (43) to rotate, and the third lever (43) impacts the ejector rod (31) to reset.

4. The magnetic flux release of claim 3, wherein:

the first lever (41) comprises a first lever main board (412) and a first lever stress part (411) arranged at one end of the first lever main board (412), the first lever stress part (411) is matched with a cantilever assembly (93) of the circuit breaker, and the other end of the first lever main board (412) is rotatably installed on the release shell (1);

the second lever (42) comprises a second lever beam (420) and two second lever transmission arms (421) respectively arranged at two ends of the second lever beam (420), and the middle parts of the two second lever transmission arms (421) are rotatably arranged on the release shell (1) and are respectively arranged at two sides of one end of the magnetic flux unit (3);

the third lever (43) comprises a third lever cross beam (430) and two third lever transmission arms (431) respectively arranged at two ends of the third lever cross beam (430), a third lever top plate (433) used for enabling the ejector rod (31) to reset is arranged in the middle of the third lever cross beam (430), the middle parts of the two third lever transmission arms (431) are rotatably installed on the release shell (1) and are respectively arranged at two sides of the other end of the magnetic flux unit (3), and one end of each third lever transmission arm (431) is connected with one end of each second lever transmission arm (421) in a driving mode.

5. The magnetic flux release of claim 3 or 4, wherein: the tripping device also comprises a first rotating shaft (24) and a second rotating shaft (27) which are inserted in the tripping device shell (1);

the first lever (41), the second lever (42) and the reset guide rod (5) are rotatably installed on the release shell (1) through a first rotating shaft (24), and the third lever (43) and the push rod (6) are rotatably installed on the release shell (1) through a second rotating shaft (27).

6. The magnetic flux release of claim 4, wherein: one end of the second lever transmission arm (421) is connected with the second lever beam (420), the other end of the second lever transmission arm is provided with a second lever pressing plate (422) which is connected with the second lever beam in a bending way, and the second lever pressing plate (422) is connected with the third lever transmission arm (431) in a driving way;

one end of the third lever transmission arm (431) close to the second lever (42) is elastically connected with the release shell (1) through a third lever return spring (47).

7. The magnetic flux release of claim 4, wherein: the first lever main plate (412) is connected with the second lever beam (420) through a transmission connecting piece (44), a transmission pressure spring (45) is sleeved on the transmission connecting piece (44), and the upper end and the lower end of the transmission pressure spring (45) are respectively connected with the second lever beam (420) and the first lever main plate (412).

8. The magnetic flux release of claim 4, wherein: the first lever force-bearing part (411) is of an annular structure formed by bending one end of the first lever main plate (412), and the free end of the annular structure is abutted against the lower side of the first lever main plate (412).

9. The magnetic flux release of claim 3, wherein: the push rod (6) comprises a push rod main board (600), one end of the push rod main board (600) is in limit fit with the reset guide rod (5), and the other end of the push rod main board is matched with a mechanism tripping half shaft (90) of the circuit breaker;

the lower end of the push rod main board (600) is rotatably installed on the release shell (1), the middle of the upper end of the push rod main board is provided with a U-shaped groove (60) matched with the ejector rod (31) of the magnetic flux unit (3), and the bottom of the U-shaped groove (60) is provided with a top plate channel (61) allowing a third lever top plate (433) of a third lever (43) to penetrate through;

the push rod main board (600) is characterized in that one end of the push rod main board (600) is provided with a guide rod clamping groove (65) in limit fit with a reset guide rod (5), the other end of the push rod main board is provided with a push rod jacking rib (64) used for driving the mechanism tripping half shaft (90) to rotate, and the guide rod clamping groove (65) and the push rod jacking rib (64) are respectively arranged on two sides of the push rod main board (600).

10. The magnetic flux release of claim 9, wherein: a guide rod reset groove (66) is also formed above the guide rod clamping groove (65), and a separating rib (67) is arranged between the guide rod clamping groove (65) and the guide rod reset groove (66);

the lower end of the push rod main board (600) is elastically connected with the release shell (1) through a push rod reset torsion spring (8).

11. The magnetic flux release of claim 10, wherein: the partition ribs (67) are of a semi-cylindrical structure, a first face (62) and a second face (63) are arranged on two sides of the outer portion of the top plate channel (61) respectively, the upper end of the first face (62) inclines towards the direction of the U-shaped groove (60), and the second face (63) is parallel to the bottom face of the U-shaped groove (60).

12. The magnetic flux release of claim 1, wherein: reset guide arm (5) including reset guide arm first arm (520) and with reset guide arm first arm (520) bend the continuous reset guide arm second arm (500), the one end of keeping away from reset guide arm second arm (500) of reset guide arm first arm (520) sets up with push rod (6) spacing complex reset guide arm card hand (52), the one end of keeping away from reset guide arm first arm (520) of reset guide arm second arm (500) sets up reset guide arm tentacle hand (50) that are used for triggering second micro-gap switch (22), reset guide arm second arm (500) middle part sets up reset guide arm reset plate (51), reset guide arm reset plate (51) downside links to each other with release casing (1) elasticity through reset guide arm reset spring (50a), the junction rotation of reset guide arm first arm (520) and reset guide arm second arm (500) is installed on release casing (1).

13. The magnetic flux release of claim 12, wherein: the reset guide rod clamping hand (52) is connected with the reset guide rod first arm (520) in a bending mode and extends towards the same direction with the reset guide rod second arm (500), and the reset guide rod clamping hand (52) is of a wedge-shaped structure and comprises an arc-shaped side face matched with the push rod (6).

14. The magnetic flux release of claim 12, wherein: reset guide arm reset plate (51) and reset guide arm second arm (500) right angle link to each other, and reset guide arm reset plate (51) downside sets up spring spacing boss (53), and reset guide arm reset spring (50a) upper end cover is established on spring spacing boss (53), and the lower extreme sets up on release casing (1).

15. The magnetic flux release of claim 1, wherein: the magnetic flux unit (3) acts, the ejector rod (31) drives the push rod (6) to rotate, the push rod (6) pushes a mechanism tripping half shaft (90) of the circuit breaker to rotate, a mechanism of the circuit breaker is tripped instantly, a mechanism rotating shaft (92) rotates, a cantilever assembly (93) arranged on the mechanism rotating shaft (92) drives a first lever (41) of the reset lever assembly (4) to rotate, the first lever (41) drives a second lever (42) of the reset lever assembly (4) to rotate, and the first microswitch (21) is switched to be closed from disconnection.

16. The magnetic flux release of claim 1, wherein: the tripper shell (1) comprises a magnetic flux unit mounting groove (103) arranged in the middle of the tripper shell, a push rod mounting groove arranged on the outer side of one end of the magnetic flux unit mounting groove (103), a lever mounting groove arranged on the outer side of the other end of the magnetic flux unit mounting groove (103) and a reset guide rod mounting groove arranged on one side of the magnetic flux unit mounting groove (103), wherein two ends of the reset guide rod mounting groove are respectively communicated with the push rod mounting groove and the lever mounting groove, a first lever (41) and a second lever (42) of a reset lever component (4) are rotatably mounted in the lever mounting groove, a push rod (6) and a third lever (43) of the reset lever component (4) are rotatably mounted in the push rod mounting groove, a reset guide rod (5) is rotatably mounted in the reset guide rod mounting groove, two second lever transmission arms (421) of the second lever (42) are, two third lever transmission arms (431) of the third lever (43) are respectively arranged at two sides of the other end of the magnetic flux unit mounting groove (103).

17. The magnetic flux release of claim 16, wherein: the tripper shell (1) further comprises a second micro switch mounting structure arranged above the reset guide rod mounting groove and a first micro switch mounting structure arranged above the lever mounting groove.

18. The magnetic flux release of claim 17, wherein: the second micro switch mounting structure comprises a second micro switch mounting groove (101) arranged on one side of the magnetic flux unit mounting groove (103) and a second micro switch clamping arm (102) arranged on one side of the second micro switch mounting groove (101), and a second micro switch clamping hook is arranged at the upper end of the second micro switch clamping arm (102).

19. The magnetic flux release of claim 17, wherein: the first microswitch mounting structure comprises a first microswitch fixing piece and a combined clamping groove which is arranged on the release shell (1) and matched with the first microswitch fixing piece;

the first microswitch fixing piece comprises a fixing piece side plate, fixing piece clamping pins (232) arranged at two ends of the fixing piece side plate and a first microswitch limiting column (231) arranged in the middle of the fixing piece side plate, and the fixing piece clamping pins (232) and the first microswitch limiting column (231) both extend towards one side of the fixing piece side plate;

the combined clamping groove comprises a first clamping hole (107) matched with the clamping pin (232) of the fixing piece and a limiting column insertion hole (107a) matched with a limiting column (231) of the first microswitch.

20. The magnetic flux release of claim 1, wherein:

the magnetic flux unit (3) is arranged in the middle of the release shell (1), the reset lever assembly (4) is arranged around the magnetic flux unit (3), the push rod (6) is arranged on the outer side of one end of the magnetic flux unit (3), and the reset guide rod (5) is arranged on one side of the magnetic flux unit (3) and is in limit fit with one end of the push rod (6).

21. The magnetic flux release of claim 1, wherein: the circuit breaker is characterized by further comprising a lever piece (91) arranged between the push rod (6) and the mechanism tripping half shaft (90), wherein one end of the lever piece (91) is arranged in a rotating mode, the push rod (6) drives the lever piece (91) to rotate, and the lever piece (91) drives the mechanism tripping half shaft (90) to rotate, so that the mechanism of the circuit breaker is tripped instantaneously.