CN110931323A

CN110931323A - Energy-saving circuit breaker

Info

Publication number: CN110931323A
Application number: CN201911270655.XA
Authority: CN
Inventors: 张静
Original assignee: Individual
Current assignee: Jiangsu Dantong Electric Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-03-27
Anticipated expiration: 2039-12-12
Also published as: CN110931323B; CN112309794A; CN112164639A

Abstract

The invention discloses an energy-saving circuit breaker, which comprises a button, a return spring and a switch body, the main circuit conductor comprises a first lead and a second lead, one end of the first lead, which is adjacent to the second lead, is provided with a contact and is positioned below the switch body, one end of the first lead, which is far away from the second lead, is used as an external joint, the switch body comprises a contact plate and an attraction armature, which are connected by a guide rod, the lower surface of the contact plate is provided with an electric contact and is just opposite to the contact at the adjacent end of the first lead and the second lead, the contact plate is upwards connected with a button, the lower part of the button is also provided with a reset spring, the attraction armature is positioned on one side of the contact plate, the attraction circuit is arranged below the attraction armature, the attraction circuit is connected with the first lead or the second lead through the first mutual inductor, and the first mutual inductor converts the main circuit current on the first lead or the second lead into a driving current in the attraction circuit.

Description

Energy-saving circuit breaker

Technical Field

The invention relates to the field of circuit breakers, in particular to an energy-saving circuit breaker.

Background

A circuit breaker is an important component in an electrical circuit for the safety protection of the circuit.

In the prior art, the circuit breaker is only used for bearing the overcurrent and circuit breaking functions, the size of the circuit breaking current is inconvenient to allocate, and the circuit breaking current is fixed during general manufacturing.

The existing electrician technology does not have a simple switch component which can identify a tiny current and then break the circuit, and in some use occasions, the simple switch is needed, the main circuit can be disconnected stably after a power utilization period is finished, and the next period of operation can be started only by manual operation of an external operator, so that the self-starting of some components on a production line is prevented, and the operations are generally realized through a current sensor and automatic control and are troublesome.

Disclosure of Invention

The present invention is directed to an energy-saving circuit breaker, which solves the problems of the prior art.

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

an energy-saving circuit breaker comprises a button, a reset spring, a switch body, a main circuit conductor, a suction circuit and a first mutual inductor,

the main conductor comprises a first lead and a second lead, one end of the first lead, which is adjacent to the second lead, is provided with a contact and is positioned below the switch body, one end of the first lead, which is far away from the second lead, is used as an external joint, the switch body comprises a contact plate and an attraction armature, which are connected by a guide rod, an electric contact is arranged on the lower surface of the contact plate and is just opposite to the contact at the adjacent end of the first lead and the second lead, the contact plate is upwards connected with a button, the lower part of the button is also provided with a reset spring, the attraction armature is positioned on one side of the contact plate, an attraction circuit is arranged below the attraction armature, the attraction circuit is connected with the first lead or the second lead through a first mutual inductor, and the first mutual inductor converts the main current on the first lead or the second lead into a driving current in the attraction circuit.

When the invention is used by an external operator, the button is pressed until the contact plate is respectively contacted with one end of the first lead and one end of the second lead which are adjacent to each other, so that the main circuit is conducted, after the main circuit is conducted, the attraction circuit obtains a current signal from the main circuit through the first mutual inductor, the first mutual inductor is a current mutual inductor, the current on the primary end is converted into the attraction circuit according to a certain proportion, the attraction circuit is provided with an attraction coil, the attraction coil is converted into magnetic attraction force after the current is introduced, the attraction armature above the attraction coil is attracted, the elastic reset force of the reset spring is overcome, the closed state of the switch body is kept, and the main circuit is continuously conducted. When no load is on the main circuit, the current on the second wire is reduced to zero, so that the current on the attraction circuit is zero, the attraction coil does not provide attraction force any more, the reset spring resets, the switch body moves upwards, the main circuit is completely disconnected, and the circuit breaker is in a disconnected state under the condition that no external force pushes the button again. From the above operation principle, the circuit breaker can be used as a current switch, namely, after the load on the main circuit is connected, the circuit breaker can be powered on by manually operating the button, then a user can leave the control place to continuously work on the main circuit, after the work in one period is stopped, the circuit can be automatically disconnected, and then the load can not be powered on again, so that the machine or the production line is prevented from being automatically started. The main circuit current is used as a judgment condition, so that the main circuit can be disconnected when the load is less, and the waste of resources is reduced. The current on the attraction circuit determines attraction force, the current is related to the current on the main circuit, and the switching-off current on the main circuit can be determined as the lower limit threshold I1 of the working current of the main circuit by setting the conversion ratio of the first mutual inductor and the elastic force of the return spring.

Furthermore, the circuit breaker still includes a vacuum tube, and the button is including pressing splenium and first piston, and the switch body still includes the second piston, and first piston and second piston all set up in a vacuum tube and can follow a vacuum tube and slide from top to bottom, and first piston upwards connects and presses splenium, sets up reset spring between pressing splenium and the vacuum tube upper surface, and the second piston is the vacuum state down to connect the contact board, between first piston and the second piston.

The vacuum cylinder, the first piston and the second piston are added to stabilize the reset force of the switch body, because in the long-term operation process of the circuit breaker, the reset spring is often in a compression state, the elastic coefficient of the reset spring can be changed, so that the lower limit threshold value I1 of the working current of the main circuit is changed, which is not expected, after the vacuum cylinder, the first piston and the second piston are added, the button is pressed down, the first piston presses down the second piston until the contact plate contacts with the first lead and the second lead, then the first piston and the pressing part are lifted by the larger elastic force of the reset spring, the switch body is mainly adsorbed by the attraction coil, the attraction coil overcomes the attraction force in the vacuum cylinder, the attraction force caused by the vacuum between the first piston and the second piston, and the force can be accurately fixed and is not easy to change through the vacuum degree and the area of the pistons, when the elastic coefficient of the return spring is selected, a larger elastic coefficient can be selected, accuracy is not required, and only the elastic force exceeds the suction force in the vacuum space to a certain degree.

Furthermore, the circuit breaker also comprises a circuit breaking component, a reed and a second mutual inductor, the main circuit conductor also comprises a yielding spring, the circuit breaking component comprises a pushing rod, a circuit breaking armature, a resistance ball and a circuit breaking circuit, the pushing rod is positioned below the contact plate and can slide up and down, the middle part of the pushing rod is provided with the resistance ball, the reed is arranged on the up-down moving path of the resistance ball, the deformation direction of the reed is the expansion and the contraction taking a vertical line as an axis, the surface of the reed opposite to each other is provided with a bulge, the distance between the bulges is smaller than the diameter of the resistance ball when the reed is in a loose state,

the lower end of the jacking rod is bent, a broken armature is arranged at the end part, a broken circuit is arranged above the broken armature, the broken circuit is connected with the first lead or the second lead through a second mutual inductor, the second mutual inductor converts the main circuit current on the first lead or the second lead into driving current, and the current conversion ratio of the second mutual inductor is higher than that of the first mutual inductor;

the lower surfaces of the contacts at the adjacent ends of the first conducting wire and the second conducting wire are respectively provided with a yielding spring.

The addition of the circuit breaking assembly is used for realizing an overcurrent circuit breaking function: the suction direction of the broken circuit armature is upward, so that the second mutual inductor converts current from the main circuit and generates suction to the broken circuit armature after entering the broken circuit, and the suction principle is the same as that of the previous suction coil. Along with the increase of the current in the main circuit, the upward suction force on the breaking armature is larger, but when the upward suction force is not higher than the resistance of the reed, the ejector rod is blocked at the lower part by the reed, the ejector rod can not contact the upper contact plate, so the upward ejection force is insufficient, the switch body is still adsorbed by the attraction circuit, when the current on the main circuit is increased to a certain degree, the current of the main circuit is converted into the current of the breaking circuit to be larger, the breaking armature moves upwards, until the resistance ball ejects a bulge towards two sides, the ejector rod does not bear the resistance of the reed any more, the top of the ejector rod is contacted with the contact plate, and the switch body moves upwards because the current conversion proportion of the second mutual inductor is higher than that of the first mutual inductor, namely the upward force of the ejector rod on the switch body is larger than the downward force of the attraction circuit on the switch body, and the suction force on the switch body in the vacuum cylinder is also upward, the main circuit is disconnected to realize the overcurrent and disconnection function, and the current on the main circuit is the upper limit threshold I2 of the working current. The stress of the switch body is positive, the force of each component on the switch body is analyzed along with the change of the current of the main circuit, the vacuum suction force refers to the suction force of a vacuum area in the vacuum cylinder on the second piston, the suction armature is stressed downwards, the broken armature is stressed upwards, a working area is formed between the upper limit and the lower limit of the working current I1/I2, namely after the button is pressed down, the current in the main circuit is between I1 and I2, if the current is too small, the suction force of the suction armature is insufficient, the switch body is disconnected, if the current is too large, the jacking rod crosses a reed to jack up the switch body to disconnect the switch body, and in fact, once the main circuit is disconnected, the force of each armature can be eliminated together, only the suction force of the vacuum cylinder on the second piston is left, and the switch body is lifted to the high position and kept at the high position.

Furthermore, the first mutual inductor comprises a first sleeve, an iron core and a second sleeve, the first sleeve and the second sleeve are respectively sleeved on the iron core, a first lead or a second lead is wrapped on the first sleeve to serve as a primary end, a suction circuit is wrapped on the second sleeve to serve as a secondary end, and the second mutual inductor has the same structure as the first mutual inductor.

The first sleeve and the second sleeve rotate respectively to change the turn ratio of the primary side and the secondary side of the mutual inductor, so that the conversion proportion of the current of the main circuit to the pull-in circuit and the circuit break circuit is changed, and different working area current ranges (I1 and I2 numerical values) can be allocated.

Preferably, the first sleeve and the second sleeve are externally provided with spiral grooves. The helical groove allows the wires to be evenly distributed around the core.

And as optimization, the pull-in circuit is provided with a rectifying and current stabilizing module. The main circuit may be ac, if there is no rectifying and current stabilizing module, the attracting force of the attracting circuit may fluctuate and change, and the attracting circuit cannot resist the upward force of the switch body when the attracting force is small, thereby causing an open circuit, which is not desirable to foresee.

Preferably, the upper surface of the first piston is connected with a vacuum suction pipe, and the vacuum suction pipe is used for keeping the vacuum degree of the space between the first piston and the second piston constant. Air needs to be exhausted before the first piston and the second piston are used, vacuum needs to be maintained, and if the first piston and the second piston are only pumped out in the early stage, vacuum leakage can occur during use to reduce the vacuum degree, so that the use performance is affected. A vacuum tank can be connected behind the vacuum suction pipe, and the vacuum degree required by the work in the vacuum cylinder can be maintained only by replacing the vacuum tank after a period.

Preferably, the top piece is arranged at the upper end of the jacking rod. The top piece helps the ejector rod to be evenly stressed when the ejector rod pushes the contact plate upwards, so that impact is prevented.

Compared with the prior art, the invention has the beneficial effects that: the invention uses the button with reset spring as the closing member, the switch body after closing switches on the main circuit, the current on the main circuit is converted to the attracting circuit to adsorb the main switch body, so that the main circuit keeps the access state under the condition that the main circuit has more than a certain current, and when the current on the main circuit is very small or is reduced to zero, the main circuit is disconnected, the main circuit is used as the end of the power utilization cycle of some power utilization occasions, and the next power utilization cycle can be entered only by the manual operation of the outside; the circuit breaking component can break the bound of the reed to jack the switch body to break the main circuit when the excessive current exists on the main circuit; the mutual inductor with two independent sleeves can conveniently allocate the current proportion of the main circuit transmitted to the attraction circuit and the circuit breaking circuit, and adjust the working current interval of the circuit breaker.

Drawings

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

FIG. 1 is a schematic diagram of the basic structure of the present invention;

FIG. 2 is a schematic view of the present invention after a vacuum cylinder and two pistons are added;

FIG. 3 is a block diagram of the vicinity of the vacuum cylinder of the present invention;

FIG. 4 is a schematic structural view of the present invention with the circuit interrupting assembly and the spring plate added;

FIG. 5 is a diagram illustrating the operation of the trip assembly and spring of the present invention;

FIG. 6 is a schematic structural diagram of a first transformer of the present invention;

FIG. 7 is a first diagram of the force analysis of the switch body according to the present invention;

fig. 8 is a force analysis diagram ii of the switch body according to the present invention.

In the figure: 1-button, 11-pressing part, 12-first piston, 2-reset spring, 3-vacuum cylinder, 4-switch body, 41-second piston, 42-contact plate, 43-attracting armature, 5-main conductor, 51-first conductor, 52-second conductor, 53-abdicating spring, 6-attracting circuit, 61-attracting coil, 62-rectifying and current-stabilizing module, 71-first mutual inductor, 711-first sleeve, 712-iron core, 713-second sleeve, 714-spiral groove, 72-second mutual inductor, 8-circuit-breaking component, 81-top rod, 82-circuit-breaking armature, 83-resistance ball, 84-top plate, 85-circuit-breaking circuit, 9-reed and 91-bulge.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

As shown in fig. 1, the energy-saving circuit breaker comprises a button 1, a return spring 2, a switch body 4, a main conductor 5, a pull-in circuit 6 and a first mutual inductor 71,

the main conductor 5 comprises a first lead 51 and a second lead 52, one end of the first lead 51 adjacent to one end of the second lead 52 is provided with a contact and is located below the switch body 4, the other end of the first lead 51 away from the second lead 52 is used as an external joint, the switch body 4 comprises a contact plate 42 and an attraction armature 43 which are connected through a guide rod, an electrical contact is arranged on the lower surface of the contact plate 42 and is opposite to the contact of the adjacent end of the first lead 51 and the second lead 52, the contact plate 42 is connected with the button 1 upwards, the lower part of the button 1 is also provided with a reset spring 2, the attraction armature 43 is located on one side of the contact plate 42, an attraction circuit 6 is arranged below the attraction armature 43, the attraction circuit 6 is connected with the first lead 51 or the second lead 52 through a first mutual inductor 71, and the first mutual inductor 71 converts the main current on the first lead 51 or the second lead 52 into a driving current.

The reset spring 2 is used for providing an upward reset force for the button 1, when an external operator uses the present invention, the button 1 is pressed until the contact point plate 42 is respectively contacted with one end of the first conducting wire 51 adjacent to one end of the second conducting wire 52 adjacent to the other end of the first conducting wire 51 adjacent to the other end of the second conducting wire 52 adjacent to the other end of the first conducting wire 52 adjacent to the other end of the second conducting wire 52 adjacent to the other end of the first conducting wire, so that the main circuit is conducted, after the main circuit is conducted, a current signal is obtained from the main circuit through the first mutual inductor 71 on the attraction circuit 6, the first mutual inductor 71 is a current mutual inductor, the current on the primary end (the main circuit, i.e., the second conducting wire 52 in fig. 1) is converted into a magnetic attraction force by the current on the attraction circuit, the attraction coil 61 is arranged on the attraction circuit, and after the current. When no load is on the main circuit, the current on the second lead 52 is reduced to zero, so that the current on the attraction circuit 6 is zero, the attraction coil 61 does not provide attraction force any more, the return spring 2 is reset, the switch body 4 moves upwards, the main circuit is completely disconnected, and the circuit breaker is in a disconnected state under the condition that no external force pushes the button 1 again. From the above operation principle, the circuit breaker can be used as a current switch, namely, after the load on the main circuit is connected, the button 1 needs to be operated manually to enable the circuit breaker to be powered on, then a user can leave the control place to continuously work on the main circuit, after the work is stopped in one period, the circuit can be automatically disconnected, and then the power can not be powered on even if the load is connected again, so that the machine or the production line is prevented from being automatically started. The main circuit current is used as a judgment condition, so that the main circuit can be disconnected when the load is less, and the waste of resources is reduced. The magnitude of the current on the attraction circuit 6 determines attraction force, and the magnitude of the current is related to the current on the main circuit, and the magnitude of the disconnection current on the main circuit can be determined as the lower limit threshold value I1 of the main circuit working current by setting the conversion ratio of the first mutual inductor 71 and the elastic force of the return spring 2.

As shown in fig. 2 and 3, the circuit breaker further includes a vacuum tube 3, the button 1 includes a pressing portion 11 and a first piston 12, the switch body 4 further includes a second piston 41, the first piston 12 and the second piston 41 are both disposed in the vacuum tube 3 and can slide up and down along the vacuum tube 3, the first piston 12 is connected to the pressing portion 11 upward, the reset spring 2 is disposed between the pressing portion 11 and the upper surface of the vacuum tube 3, the second piston 41 is connected to the contact plate 42 downward, and a vacuum state is formed between the first piston 12 and the second piston 41.

The vacuum cylinder 3 and the first and

second pistons

12 and 41 are added to stabilize the reset force of the switch body 4, because the reset spring 2 is often in a compressed state during the long-term operation of the circuit breaker, and the elastic coefficient thereof may change, so that the lower threshold I1 of the main circuit operating current changes, which is not desirable to predict, after the vacuum cylinder 3 and the first and

second pistons

12 and 41 are added, the button 1 is pressed, the first piston 12 presses the second piston 41 until the contact plate 42 contacts the first and

second wires

51 and 52, and then the first and

second pistons

12 and 11 are lifted by the larger elastic force of the reset spring 2, the switch body 4 is mainly adsorbed by the adsorption coil 61, the adsorption force of the adsorption coil 61 is overcome by the suction force in the vacuum cylinder 3, and the suction force caused by the vacuum between the first and

second pistons

12 and 41, which can be precisely fixed by the vacuum degree and the piston area and is not easy to change, when the elastic coefficient of the return spring 2 is selected, a larger elastic coefficient can be selected, which is not necessarily accurate, and only needs the elastic force to exceed the suction force in the vacuum space to a certain extent.

As shown in fig. 4, the circuit breaker further includes a breaking assembly 8, a reed 9 and a second transformer 72, the main conductor 5 further includes a abdicating spring 53, the breaking assembly 8 includes a pushing rod 81, a breaking armature 82, a resistance ball 83, and a breaking circuit 85, the pushing rod 81 is located below the contact plate 42 and can slide up and down, the resistance ball 83 is disposed at the middle part of the pushing rod 81, the reed 9 is disposed on the up-down moving path of the resistance ball 83, the deformation direction of the reed 9 is the expansion and contraction taking a vertical line as an axis, the surface opposite to the reed 9 is provided with a protrusion 91, the space between the protrusions 91 is smaller than the diameter of the resistance ball 83 when the reed 9 is in a loose state,

after the lower end of the jacking rod 81 is bent, a broken armature 82 is arranged at the end part, a broken circuit 85 is arranged above the broken armature 82, the broken circuit 85 is connected with the first lead 51 or the second lead 52 through a second transformer 72, the second transformer 72 converts main circuit current on the first lead 51 or the second lead 52 into driving current in the broken circuit 85, and the current conversion ratio of the second transformer 72 is higher than that of the first transformer 71;

the lower surfaces of the contacts at the adjacent ends of the first conducting wire 51 and the second conducting wire 52 are respectively provided with a yielding spring 53.

The addition of the circuit breaking assembly 8 is to realize the overcurrent circuit breaking function: the direction of the attraction force of the circuit breaker armature 82 to the circuit breaker 85 is upward, so that the second transformer 72 converts the current from the main circuit into the circuit breaker 85 to generate the attraction force to the circuit breaker armature 82, and the principle of the attraction force is the same as that of the attraction coil in the prior art. As the current in the main circuit increases, the upward attraction force of the trip armature 82 is greater, but when the upward attraction force is not higher than the resistance of the spring 9, the trip rod 81 is blocked by the spring 9 at the lower part, the trip rod 81 does not contact the upper contact plate 42, so that the upward attraction force is not sufficient, the switch body 4 is still attracted by the attraction circuit 6, when the current in the main circuit increases to a certain degree, the current of the main circuit is converted into the current of the trip circuit 85, the trip armature 82 moves upwards, until the resistance ball 83 pushes the protrusions 91 towards two sides, the trip rod 81 does not receive the resistance of the spring 9, the top of the trip rod 81 contacts with the contact plate 4, and because the current conversion ratio of the second transformer 72 is higher than that of the first transformer 71, namely, the upward attraction force of the trip rod 81 to the switch body 4 is greater than the downward force of the attraction circuit 6 to the switch body, and the attraction force to the switch body 4 in the vacuum cylinder 3 is also upward, therefore, the switch body 4 moves upward, the main circuit is opened, and the overcurrent cutoff function is realized, and at this time, the current on the main circuit is the upper limit threshold I2 of the operating current. The analysis of the force of each component on the switch body 4 along with the change of the current of the main circuit is shown in fig. 7, the vacuum suction upward force refers to the suction upward force of the vacuum area in the vacuum cylinder 3 on the second piston 41, the suction armature 43 is stressed downward, the breaking armature 82 is stressed upward, a working area is formed between the upper limit and the lower limit of the working current I1/I2, namely after the button 1 is pressed, the current in the main circuit is between I1 and I2, if the current is too small, the suction force of the suction armature 43 is insufficient, the switch body 4 is disconnected, if the current is too large, the jacking rod 81 crosses the reed 9 and jacks up the switch body 4 to disconnect, in fact, once the switch body 4 is disconnected, the force of each armature is eliminated together, and only the suction upward force of the vacuum cylinder 3 on the second piston 41 is left, so that the switch body 4 is lifted to the high position and is kept at the high position.

The abdicating spring 53 needs to reduce a small section to push the ejector rod 81 downwards when the switch body 4 descends, so that the resistance ball 83 pushes away the protrusion 91 on the reed 9 and then is positioned below the protrusion 91 to be used as a next circuit breaking operation component, after the resistance ball 83 is positioned below the protrusion 91, the loosened button 1 moves upwards, the contact ends of the switch body 4, the first lead 51 and the second lead 52 move upwards to reach a normal operation position, and a certain gap is reserved between the lower surface of the contact plate 42 and the upper end of the ejector rod 81.

As shown in fig. 6, the first transformer 71 includes a first sleeve 711, an iron core 712, and a second sleeve 713, the first sleeve 711 and the second sleeve 713 are respectively sleeved on the iron core 712, the first sleeve 711 is wrapped around the first lead 51 or the second lead 52 as a primary end, the second sleeve 713 is wrapped around the attraction circuit 6 as a secondary end, and the second transformer 72 has the same structure as the first transformer 71.

The first sleeve 711 and the second sleeve 713 rotate respectively to change the turn ratio of the primary side and the secondary side of the transformer, so as to change the conversion ratio of the main circuit current to the pull-in circuit 6 and the break-out circuit 8, and adjust the slopes of the two force curves in fig. 7, so as to allocate different working area ranges (I1 and I2 values).

As shown in fig. 6, the first sleeve 711 and the second sleeve 713 are externally provided with spiral grooves 714. The helical grooves 714 allow the wire to be evenly distributed around the core 712.

As shown in fig. 2, the pull-in circuit 6 has a rectifying and current stabilizing module 62. The main circuit may be ac, if there is no rectifying and current stabilizing module 62, the attraction force of the attraction circuit 6 may fluctuate, and when it is small, it cannot resist the upward force of the switch body 4, so as to cause an open circuit, which is not desirable to foresee.

A vacuum suction pipe is connected to the upper surface of the first piston 12, and the vacuum suction pipe is used for keeping the vacuum degree of the space between the first piston 12 and the second piston 41 constant. Before use, air needs to be exhausted between the first piston 12 and the second piston 41, vacuum needs to be maintained, and if the air is only exhausted in the early stage, vacuum leakage can occur during use to reduce the vacuum degree, and the service performance is affected. A vacuum tank can be connected behind the vacuum suction pipe, and the vacuum degree required by the work in the vacuum cylinder 3 can be maintained only by replacing the vacuum tank after a period.

The top piece 84 is arranged at the upper end of the jacking rod 81. The top plate 84 helps the ejector rod 81 to uniformly force the contact plate 42 upward, preventing impact.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An energy-saving circuit breaker, its characterized in that: the circuit breaker comprises a button (1), a reset spring (2), a switch body (4), a main circuit conductor (5), a suction circuit (6) and a first mutual inductor (71),

the main conductor (5) comprises a first lead (51) and a second lead (52), one end of the first lead (51) adjacent to the second lead (52) is provided with a contact and is positioned below the switch body (4), one end of the first lead (51) far away from the second lead (52) is used as an external joint, the switch body (4) comprises a contact plate (42) and an attraction armature (43) which are connected by a guide rod, an electric contact is arranged on the lower surface of the contact plate (42) and is just opposite to the contact of one end of the first lead (51) adjacent to the second lead (52), the contact plate (42) is upwards connected with a button (1), a reset spring (2) is further arranged on the lower part of the button (1), the attraction armature (43) is positioned on one side of the contact plate (42), an attraction circuit (6) is arranged below the attraction armature (43), and the attraction circuit (6) is connected with the first lead (51) or the second lead (52) through a first mutual inductor (71), the first mutual inductor (71) converts main circuit current on the first lead (51) or the second lead (52) into drive current in the attraction circuit (6).

2. An energy saving type circuit breaker according to claim 1, wherein: the circuit breaker still includes vacuum tube (3), button (1) is including pressing splenium (11) and first piston (12), switch body (4) still include second piston (41), first piston (12) and second piston (41) all set up in vacuum tube (3) and can follow vacuum tube (3) and slide from top to bottom, and first piston (12) upwards are connected and are pressed splenium (11), press splenium (11) and vacuum tube (3) to go up and set up reset spring (2) between the surface, second piston (41) connect contact board (42) downwards, be vacuum state between first piston (12) and the second piston (41).

3. An energy saving type circuit breaker according to claim 2, wherein: the circuit breaker further comprises a circuit breaking assembly (8), a reed (9) and a second mutual inductor (72), the main circuit conductor (5) further comprises a yielding spring (53), the circuit breaking assembly (8) comprises a jacking rod (81), a circuit breaking armature (82), a resistance ball (83) and a circuit breaking circuit (85), the jacking rod (81) is located below the contact plate (42) and can slide up and down, the middle part of the jacking rod (81) is provided with the resistance ball (83), the reed (9) is arranged on the up-down moving path of the resistance ball (83), the deformation direction of the reed (9) is opened and tightened by taking a vertical line as an axis, the opposite surfaces of the reeds (9) are provided with bulges (91), and the distance between the bulges (91) is smaller than the diameter of the resistance ball (83) under the loosening state of the reeds (9),

the lower end of the ejector rod (81) is bent, a circuit breaking armature (82) is arranged at the end, a circuit breaking circuit (85) is arranged above the circuit breaking armature (82), the circuit breaking circuit (85) is connected with the first lead (51) or the second lead (52) through a second transformer (72), the second transformer (72) converts main circuit current on the first lead (51) or the second lead (52) into driving current in the circuit breaking circuit (85), and the current conversion ratio of the second transformer (72) is higher than that of the first transformer (71);

and the lower surfaces of the contacts at the adjacent ends of the first conducting wire (51) and the second conducting wire (52) are respectively provided with a yielding spring (53).

4. An energy saving type circuit breaker according to claim 3, wherein: the first mutual inductor (71) comprises a first sleeve (711), an iron core (712) and a second sleeve (713), the first sleeve (711) and the second sleeve (713) are respectively sleeved on the iron core (712), the first lead (51) or the second lead (52) is wound on the first sleeve (711) to serve as a primary end, the suction circuit (6) is wound on the second sleeve (713) to serve as a secondary end, and the second mutual inductor (72) has the same structure as the first mutual inductor (71).

5. An energy saving type circuit breaker according to claim 4, wherein: the outer surfaces of the first sleeve (711) and the second sleeve (713) are provided with spiral grooves (714).

6. An energy saving type circuit breaker according to claim 1, wherein: and the pull-in circuit (6) is provided with a rectification and current stabilization module.

7. An energy saving type circuit breaker according to claim 2, wherein: the upper surface of the first piston (12) is connected with a vacuum suction pipe, and the vacuum suction pipe is used for keeping the vacuum degree of a space between the first piston (12) and the second piston (41) constant.

8. An energy saving type circuit breaker according to claim 3, wherein: the top piece (84) is arranged at the upper end of the jacking rod (81).