CN217333982U - Magnetic flux release reset structure and circuit breaker - Google Patents

Abstract

The utility model relates to the field of low-voltage electricity, in particular to a magnetic flux release resetting structure, which comprises a magnetic flux release and a resetting mechanism, wherein the resetting mechanism comprises a driving lever, a resetting elastic part and a push rod, and the driving lever and the push rod are respectively pivoted; the push rod is respectively matched with an operating mechanism and a magnetic flux release of the circuit breaker, and when the magnetic flux release acts, a push rod of the magnetic flux release drives the push rod to rotate and drives the operating mechanism to release through the push rod; after the circuit breaker is tripped and is opened, the operating mechanism or a moving contact of the circuit breaker moves to drive the deflector rod to rotate, and the deflector rod applies acting force to the push rod through the reset elastic piece to enable the push rod to rotate in the direction of resetting the ejector rod; after the breaker is switched on, the moving contact is separated from the driving lever; the reset structure of the magnetic flux release is simple in structure, can realize reliable reset of the magnetic flux release, and cannot damage the magnetic flux release. The utility model discloses still relate to one kind and include the magnetic flux release structure that resets's circuit breaker can realize the reliable resetting of magnetic flux release.

Description

Magnetic flux release reset structure and circuit breaker

Technical Field

The utility model relates to a low-voltage electrical field, concretely relates to magnetic flux release structure and one include the circuit breaker of magnetic flux release structure that resets.

Background

Residual current operated circuit breakers, the action function of which is independent of the supply voltage, generally employ a leakage signal to directly trigger a magnetic flux release to act, and further push an operating mechanism to release, so that the circuit is disconnected. Before the residual current operated circuit breaker is closed again, the counter force of the magnetic flux release needs to be overcome through external force, so that the armature of the magnetic flux release is in a contact state with the magnetic yoke, the ejector rod of the magnetic flux release is reset, and preparation is made for reclosing of the residual current operated circuit breaker.

The reset structure of the existing magnetic flux release has the following problems:

1. the reset structure of the existing magnetic flux release is complex;

2. the impact of the restoring force of the reset structure of the existing magnetic flux release on the magnetic flux release is too large, so that the contact surface of the armature and the magnetic yoke is damaged, and the service life of the magnetic flux release is greatly reduced.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a reset structure of a magnetic flux release, which has simple structure, can realize the reliable reset of the magnetic flux release and can not damage the magnetic flux release; the circuit breaker comprises the magnetic flux release resetting structure, and the reliable resetting of the magnetic flux release can be realized.

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

a magnetic flux release resetting structure comprises a magnetic flux release and a resetting mechanism, wherein the resetting mechanism comprises a deflector rod, a resetting elastic piece and a push rod, and the deflector rod and the push rod are respectively pivoted; the push rod is respectively matched with an operating mechanism and a magnetic flux release of the circuit breaker, and when the magnetic flux release acts, an ejector rod of the magnetic flux release drives the push rod to rotate and drives the operating mechanism to release through the push rod; after the circuit breaker is tripped and opened, the operating mechanism or a movable contact of the circuit breaker moves to drive the deflector rod to rotate, and the deflector rod applies acting force to the push rod through the reset elastic piece to enable the push rod to rotate in the direction of resetting the ejector rod; after the breaker is switched on, the moving contact is separated from the driving lever.

Preferably, the acting force applied to the push rod by the return elastic element is 110% -130% of the return force for returning the push rod.

Preferably, the elastic return element is arranged on the shifting lever.

Preferably, the elastic return element is a torsion spring, and comprises a first end and a second end; the deflector rod comprises a deflector rod spring shaft, the torsion spring is sleeved on the deflector rod spring shaft, the first end of the torsion spring is matched with the deflector rod, and the second end of the torsion spring is matched with the push rod.

Preferably, the shifting lever further comprises a shifting lever matching part matched with the movable contact, and the shifting lever matching part protrudes towards the direction of the movable contact.

Preferably, the driving lever comprises a driving lever installation part, a first driving lever section, a driving lever matching part, a second driving lever section, a third driving lever section and a driving lever limiting part which are sequentially connected, the driving lever is rotatably installed on the shell of the circuit breaker through the driving lever installation part, a driving lever spring shaft is arranged on one side of the driving lever matching part, a first end of a torsion spring is matched with the first driving lever section, and a second end of the torsion spring is limited between the second driving lever section and the driving lever limiting part and is opposite to the third driving lever section.

Preferably, one end of the push rod is matched with the operating mechanism, the middle part of the push rod is rotatably arranged on the shell of the circuit breaker, and the other end of the push rod is matched with the reset elastic piece.

Preferably, the push rod comprises a first push rod finger, a push rod installation part, a second push rod finger and a push rod matching part which are sequentially connected, the push rod is rotatably arranged on the shell through the push rod installation part, the first push rod finger is matched with the operating mechanism, the second push rod finger is matched with the ejector rod, and the push rod matching part is matched with the reset elastic piece.

Preferably, the elastic restoring element is a torsion spring, and the push rod matching part is provided with a matching part slot matched with one end of the torsion spring.

Preferably, the operating mechanism comprises a locking piece and a tripping piece which are respectively arranged in a rotating way, and the locking piece is in hasp fit with the tripping piece; the push rod is matched with the jump buckle piece in a driving mode to drive the jump buckle piece to rotate, so that the jump buckle piece is disengaged from the hasp of the lock buckle piece, and the operating mechanism is released.

Preferably, the operating mechanism further comprises a transmission rod, and the push rod drives the jump buckle piece to rotate through the transmission rod, so that the jump buckle piece is released from the hasp matching with the lock buckle piece.

Preferably, one end of the transmission rod is movably connected with the trip buckle piece, the other end of the transmission rod is matched with the push rod, a long strip-shaped sliding hole is formed in the middle of the transmission rod, and the transmission rod is arranged on a shell of the circuit breaker in a sliding fit mode through the long strip-shaped sliding hole and the transmission rod shaft.

Preferably, the operating mechanism further comprises a handle, a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected with the handle, the other end of the first connecting rod penetrates through one end of the second connecting rod and then is inserted into the waist-shaped groove in the lock catch piece in a sliding mode, the other end of the second connecting rod is connected with the lever in a driving mode so as to drive the lever to rotate, the lever is connected with the moving contact in a driving mode, and the lever resetting elastic piece is connected with the lever.

A circuit breaker comprises the magnetic flux release resetting structure.

Preferably, the reset mechanism and the magnetic flux release of the magnetic flux release reset structure) are both located on one side below the operating mechanism and between the arc inlet side of the arc extinguish chamber and one wiring terminal of the circuit breaker, the deflector rod, the reset elastic piece and the push rod are all located on one side of the magnetic flux release and between the arc extinguish chamber and the magnetic flux release, and the deflector rod and the magnetic flux release are located on two sides of the push rod.

The utility model discloses the magnetic flux release reset structure of circuit breaker, simple structure, action are reliable, and reset mechanism can make the magnetic flux release reliably reset after the circuit breaker is tripped because of the leakage current trouble; and the acting force for driving the ejector rod of the magnetic flux release to reset comes from the reset elastic piece, and the reset force of the reset elastic piece can be set as required, so that the damage of the reset mechanism to the magnetic flux release is avoided.

In addition, the reset elastic piece can drive the ejector rod of the magnetic flux release to reliably reset for the set value of the acting force of the push rod, and the situation that the armature iron and the magnetic yoke of the magnetic flux release are strongly impacted and damaged due to overlarge force is prevented, so that the service life of the magnetic flux release is prolonged.

The utility model discloses circuit breaker, it includes magnetic flux release reset structure can realize the reliable resetting of magnetic flux release, and long service life.

Drawings

Fig. 1 is a schematic structural diagram of the circuit breaker of the present invention, the circuit breaker is in a closing state;

fig. 2 is a schematic projection structure diagram of a magnetic flux release resetting structure of the circuit breaker in the state shown in fig. 1;

fig. 3 is a schematic perspective view of a magnetic flux release resetting structure of the circuit breaker in the state shown in fig. 1;

fig. 4 is a schematic structural diagram of the circuit breaker of the present invention, the circuit breaker is in an open state;

fig. 5 is a schematic projection structure diagram of a magnetic flux release resetting structure of the circuit breaker in the state shown in fig. 4;

fig. 6 is a schematic perspective view of a magnetic flux release resetting structure of the circuit breaker in the state shown in fig. 4;

fig. 7 is a schematic structural diagram of the circuit breaker of the present invention, in which the magnetic flux release is actuated to release the operating mechanism and the moving contact has not been separated from the static contact;

fig. 8 is a schematic projection structure view of a magnetic flux release reset structure of the circuit breaker in the state shown in fig. 7;

fig. 9 is a schematic perspective view of a magnetic flux release reset structure of the circuit breaker of the present invention in the state shown in fig. 7;

fig. 10 is a schematic view of the assembly structure of the shift lever and the elastic return element of the present invention at a viewing angle;

fig. 11 is a schematic view of an assembly structure of the driving lever and the elastic return element of the present invention at another viewing angle;

fig. 12 is a schematic structural view of the push rod of the present invention.

Detailed Description

The following description will further describe the embodiments of the magnetic flux release resetting structure and the circuit breaker according to the embodiments of the present invention with reference to fig. 1 to 12. The utility model discloses a magnetic flux release reset structure and circuit breaker is not limited to the description of following embodiment.

As shown in fig. 1, 4 and 7, the utility model discloses circuit breaker includes casing h and sets up operating device and the contact system in casing h, and the contact system includes moving contact 7a and the static contact that the cooperation was used, and operating device links to each other with the drive contact system closure or disconnection with moving contact 7a drive to make circuit breaker close a floodgate or separating brake.

The utility model discloses circuit breaker, its operating device can realize through prior art, can adopt the operating device of following two kinds of structural style at least:

as shown in fig. 1, 4 and 7, the first structural form of the operating mechanism is as follows: the operating mechanism adopts a cam-five-link mechanism. Further, the operating mechanism comprises a handle 1a, a first connecting rod 2a, a locking piece 3a, a jump buckle piece 4a, a second connecting rod 5a and a lever 6a, the handle 1a, the locking piece 3a, the jump buckle piece 4a and the lever 6a are respectively and rotatably arranged on the shell h, the locking piece 3a and the jump buckle piece 4a are in snap-fit, the jump buckle piece 4a is driven by external force to rotate so as to release the snap-fit for the locking piece 3a, the operating mechanism is tripped, one end of the first connecting rod 2a is rotatably connected with the handle 1a, the other end of the first connecting rod passes through one end of the second connecting rod 5a and then is slidably inserted into a waist-shaped groove in the locking piece 3a, the other end of the second connecting rod 5a is connected with the lever 6a in a driving mode so as to drive the lever 6a to rotate, and the lever 6a is connected with the movable contact 7a in a driving mode. Furthermore, the operating mechanism further comprises a lever resetting elastic piece, the lever resetting elastic piece is connected with the lever 6a, the lever resetting elastic piece is a torsion spring, the torsion spring is sleeved on a rotating shaft of the lever 6a, one end of the torsion spring is matched with the shell h, the other end of the torsion spring is matched with the lever 6a, acting force is provided for the lever 6a, and the lever 6a has a tendency of rotating towards a breaking position when the circuit breaker is opened or tripped.

The second structure form of the operating mechanism is as follows: the operating mechanism adopts a four-bar linkage mechanism. Furthermore, the operating mechanism comprises a handle 1a, a third connecting rod, a lock part, a jump buckle part and a lever 6a, the handle 1a and the lever 6a are respectively and rotatably arranged on the shell h, the lock part and the jump buckle part are respectively and rotatably arranged on the lever 6a and are in snap fit, the jump buckle part is driven by external force to rotate to release the snap fit with the lock part, so that the operating mechanism is tripped, the handle 1a is in drive fit with the lock part through the third connecting rod, and the lever is in drive connection with a moving contact of the circuit breaker.

The utility model discloses the circuit breaker preferably adopts the operating device of a structural style.

As shown in fig. 1-9, the magnetic flux release resetting structure of the present invention includes a magnetic flux release 4 and a resetting mechanism, the resetting mechanism includes a shift lever 1, a resetting elastic member 2 and a push rod 3, the shift lever 1 and the push rod 3 are respectively pivoted; as shown in fig. 7-9, the push rod 3 is respectively matched with an operating mechanism of the circuit breaker and the magnetic flux release 4, when the magnetic flux release 4 operates, the ejector rod 4-0 of the magnetic flux release 4 is ejected out to drive the push rod 3 to rotate, and the push rod 3 drives the operating mechanism to release; as shown in fig. 4-6, after the circuit breaker trips and opens the brake due to the action of the magnetic flux release 4, the movable contact 7a moves to a tripping and opening position to drive the shift lever 1 to rotate, the shift lever 1 applies an acting force to the push rod 3 through the reset elastic element 2, so that the push rod 3 rotates the direction of resetting the push rod 4-0 to drive the push rod 4-0 to reset; as shown in fig. 1-3, after the circuit breaker is closed, the movable contact 7a is separated from the shift lever 1, so that the shift lever 1 and the push rod 3 are both in a free rotation state. Further, as shown in fig. 4-6, after the circuit breaker is normally opened, the moving contact 7a drives the shift lever 1 to rotate, and the shift lever 1 applies an acting force to the push rod 3 through the restoring elastic element 2, so that the push rod 3 tends to rotate in a direction of restoring the push rod 4-0, that is, when the moving contact 7a moves to the breaking position, the shift lever 1 is driven to rotate, and the shift lever 1 applies an acting force to the push rod 3 through the restoring elastic element 2. Further, the tripping and breaking position of the movable contact 7a coincides with the breaking position.

The reset structure of the magnetic flux release is simple in structure and reliable in action, and the reset mechanism can reliably reset the magnetic flux release after the circuit breaker trips and is separated due to leakage current faults (namely, the circuit breaker trips and is separated due to the action of the magnetic flux release 4); and the acting force for driving the ejector rod of the magnetic flux release to reset comes from the reset elastic piece, and the reset force of the reset elastic piece can be set as required, so that the damage of the reset mechanism to the magnetic flux release is avoided.

As another embodiment, after the circuit breaker trips and opens due to the action of the magnetic flux release 4, an operating mechanism (for example, a lever 6a or another structural member that changes position while the movable contact 7a is switched from the closed position to the open position) drives the shift lever 1 to rotate, and the shift lever 1 applies a force to the push rod 3 through the return elastic member 2, so that the push rod 3 rotates to drive the push rod 4-0 to return.

It should be pointed out that, in the circuit breaker of the utility model, the magnetic flux release 4 is used for realizing leakage protection, and when the leakage current is detected, the magnetic flux release 4 acts to release the operating mechanism; therefore, the circuit breaker further includes a structure for detecting a leakage current, such as a leakage current detection coil.

After the circuit breaker is tripped due to the action of the magnetic flux tripper 4, the acting force applied to the push rod 3 by the reset elastic piece 2 is 110-130% of the reset force for resetting the push rod 4-0. Furthermore, after the circuit breaker is tripped by the action of the magnetic flux release 4, the acting force applied to the push rod 3 by the reset elastic piece 2 is 120% of the reset force for resetting the push rod 4-0. The acting force of the reset elastic piece on the push rod can drive the ejector rod of the magnetic flux release to reset reliably, and the situation that the armature iron and the magnetic yoke of the magnetic flux release are damaged due to strong impact caused by overlarge force is prevented, so that the service life of the magnetic flux release is prolonged.

As shown in fig. 1 to 9, the return elastic member 2 is coupled to the lever 1. The reset elastic piece 2 can be arranged on the shift lever 1; the reset elastic piece 2 can be integrally formed with the shift lever 1 and is an elastic arm formed by a protrusion on the shift lever 1, the main body of the shift lever 1 keeps rigid and is matched with the operating mechanism or the moving contact 7a, and the elastic arm keeps elasticity to provide elastic acting force; or the elastic reset piece 2 and the shifting lever 1 are independent elements respectively, and the elastic reset piece 2 is arranged on the shifting lever 1. Of course, as another embodiment, the elastic return element 2 may be mounted on the housing h of the circuit breaker, but the assembly is complicated. In addition, after the circuit breaker is tripped and opened, the moving contact 7a can indirectly or directly drive the driving lever 1.

As shown in fig. 2, 10-11, one way of implementing the linkage between the return elastic element 2 and the shift lever 1 is: the reset elastic part 2 is a torsion spring and comprises a first end 2-0 of the torsion spring and a second end 2-1 of the torsion spring; the driving lever 1 comprises a driving lever spring shaft 1-2-0, the torsion spring is sleeved on the driving lever spring shaft 1-2-0, the first end 2-0 of the torsion spring is matched with the driving lever 1, and the second end 2-1 of the torsion spring is matched with the push rod 3. The utility model discloses the circuit breaker is preferred to adopt above-mentioned implementation. After the circuit breaker is tripped or normally opened, the movable contact 7a drives the deflector rod 1 to rotate, and the deflector rod 1 drives the reset elastic piece 2 to move towards the push rod 3 and contact with the push rod 3 so as to apply acting force to the push rod 3 and deform, so that the push rod 3 drives the ejector rod 4-0 to reset; after the circuit breaker is switched on, the movable contact 7a is separated from the driving lever 1, the second end 2-1 of the torsion spring is separated from the push rod 3 and is deformed and reset, and the driving lever 1 and the push rod 3 which bear the reset elastic piece 2 are in a free rotation state to prepare for the next action of the magnetic flux release 4.

As another example, the reset spring 2 and the shift lever 1 may be coupled by: the reset elastic piece 2 is a torsion spring and is rotationally arranged on the shell h through a torsion spring mounting shaft, a first end 2-0 of the torsion spring is matched with the deflector rod 1, and a second end 2-1 of the torsion spring is matched with the push rod 3.

As another example, the reset spring 2 and the shift lever 1 may be coupled by: the reset elastic piece 2 is a pressure spring and can move linearly under the action of the shift lever 1 to contact or be far away from the push rod 3; that is, after the circuit breaker is tripped or normally opened, the moving contact 7a drives the shift lever 1 to rotate, the shift lever 1 drives the reset elastic element 2 to move towards the push rod 3 and contact with the push rod 3, so as to apply an acting force to the push rod 3, and the push rod 3 drives the ejector rod 4-0 to reset; after the circuit breaker is switched on, the movable contact 7a is separated from the driving lever 1, and the driving lever 1 and the push rod 3 are in a free rotation state to prepare for the next action of the magnetic flux release 4.

As shown in fig. 2 and 10-11, the shift lever 1 further includes a shift lever engaging portion 1-2 engaged with the movable contact 7a, and the shift lever engaging portion 1-2 protrudes toward the movable contact 7 a. Furthermore, a moving contact driving bulge is arranged at the tail end of the moving contact 7a, and the moving contact driving bulge is matched with the deflector rod matching part 1-2.

As shown in fig. 4-6, the lever matching portion 1-2 and the moving contact of the moving contact 7a are respectively located at two sides of the moving contact bridge of the moving contact 7 a.

As shown in fig. 2 and 10-11, an embodiment of the toggle lever 1 is shown: the driving lever 1 comprises a driving lever mounting part 1-0, a driving lever first section 1-1, a driving lever matching part 1-2, a driving lever second section 1-3, a driving lever third section 1-4 and a driving lever limiting part 1-5 which are sequentially connected, the driving lever 1 is rotatably mounted on the shell h through the driving lever mounting part 1-0, one side of the driving lever matching part 1-2 is provided with a driving lever spring shaft 1-2-0, the first end 2-0 of the torsion spring is matched with the driving lever first section 1-1, and the second end 2-1 of the torsion spring is limited between the driving lever second section 1-3 and the driving lever limiting part 1-5 and is opposite to the driving lever third section 1-4. Further, the second end 2-1 of the torsion spring is abutted to the third section 1-4 of the deflector rod. Of course, the second end 2-1 of the torsion spring may not abut against the third section 1-4 of the shift lever.

Referring to fig. 2 and 10-11, the first section 1-1 of the deflector rod is provided with a first section jack 1-1-0, and the free end of the first end 2-0 of the torsion spring is bent and inserted into the first section jack 1-1-0.

As shown in fig. 2 and 10-11, the deflector rod mounting part 1-0, the deflector rod first section 1-1, the deflector rod matching part 1-2 and the deflector rod second section 1-3 are positioned on a straight line; the third section 1-4 of the deflector rod is vertical to the second section 1-3 of the deflector rod, and the limiting part 1-5 of the deflector rod is vertical to the third section 1-4 of the deflector rod.

As shown in fig. 10-11, the driving lever engaging portion 1-2 includes an arc-shaped surface that engages with the movable contact 7 a.

As shown in fig. 10-11, the shift lever 1 further includes a partition wall disposed around the spring shaft 1-2-0 of the shift lever, and the partition wall is located between the spring shaft 1-2-0 of the shift lever and the movable contact 7a to increase an insulation gap and a creepage distance between the reset elastic member 2 and the movable contact 7 a.

As shown in fig. 1-9, one end of the push rod 3 is engaged with the operating mechanism, the middle part is rotatably disposed on the housing h, and the other end is engaged with the elastic restoring member 2.

In particular, as shown in fig. 1 to 9, the push rod 3 cooperates with the operating mechanism by: the push rod 3 is in driving fit with the jump buckle piece 4a of the operating mechanism to drive the jump buckle piece 4a to rotate, so that the jump buckle piece 4a is released from the hasp fit with the lock buckle piece 3a, and the operating mechanism is released. Furthermore, the operating mechanism further comprises a transmission rod 8a, the push rod 3 drives the jump buckle piece 4a to rotate through the transmission rod 8a, so that the jump buckle piece 4a is released from the snap fit with the locking piece 3a, and the operating mechanism is released. One end of a transmission rod 8a is movably connected with the trip buckle piece 4a, the other end of the transmission rod 8a is matched with the push rod 3, a long strip-shaped sliding hole is formed in the middle of the transmission rod 8a, and the transmission rod 8a is arranged on a shell h of the circuit breaker in a sliding fit mode through the long strip-shaped sliding hole and a transmission rod shaft. Preferably, the deflector rod 1 is rotatably mounted on a transmission rod shaft of the shell h through the deflector rod mounting part 1-0, and shares a transmission rod shaft with the transmission rod 8a, and the transmission rod 8a is positioned above the deflector rod 1. Furthermore, one end of the transmission rod 8a movably connected with the jump buckle piece 4a is provided with a transmission rod connecting hole, the jump buckle piece 4a is provided with a jump buckle piece connecting shaft, and the transmission rod connecting hole is sleeved on the jump buckle piece connecting shaft.

As shown in fig. 2 and 12, an embodiment of the push rod 3 is: the push rod 3 comprises a push rod first finger 3-1, a push rod mounting part 3-2, a push rod second finger 3-3 and a push rod matching part 3-4 which are sequentially connected, the push rod 3 is rotatably arranged on the shell h through the push rod mounting part 3-2, the push rod first finger 3-1 is matched with the operating mechanism, the push rod second finger 3-3 is matched with the push rod 4-0, and the push rod matching part 3-4 is matched with the reset elastic part 2. Furthermore, the push rod matching part 3-4 is provided with a matching part slot 3-4-0 matched with the second end 2-1 of the spring of the reset elastic part 2.

Preferably, the push rod mounting part 3-2 is a U-shaped structure and comprises a mounting bottom plate and two mounting arms arranged oppositely, the mounting bottom plate is respectively connected with the first push rod finger 3-1 and the second push rod finger 3-3, and the push rod mounting part 3-2 is rotatably arranged on the shell h through the mounting arms.

Preferably, as shown in fig. 1-9, the second end 2-1 of the spring is always located in the mating portion slot 3-4-0. Furthermore, the matching part slot 3-4-0 is a long and narrow slot.

Preferably, the push rod 3 is an integral member formed by cutting and bending a metal plate; or a one-piece member made of plastic.

The action process of the circuit breaker of the present invention will be described below with reference to the attached drawings:

as shown in fig. 7-9, after the circuit breaker detects a leakage current, the magnetic flux release 4 operates to eject the ejector rod 4-0, the ejector rod 4-0 presses against the second finger 3-3 of the push rod 3 to drive the push rod 3 to rotate clockwise, the push rod 3 drives the trip piece 4a of the operating mechanism to rotate through the transmission rod 8a to release the snap-fit with the latch piece 3a, so that the operating mechanism is released, and finally the circuit breaker is released and separated. Referring to fig. 4-6, after the circuit breaker trips and opens a brake due to a leakage current fault (i.e., trips and opens a brake due to the action of the magnetic flux release 4), the movable contact 7a presses against the driving lever matching portion 1-2 of the driving lever 1 to rotate the driving lever 1 counterclockwise, the driving lever 1 drives the reset elastic member 2 to rotate counterclockwise, the second end 2-1 of the spring of the reset elastic member 2 is separated from the third section 1-4 of the driving lever 1 and is abutted against the push rod matching portion 3-4 of the push rod 3, the second end 2-1 of the spring drives the push rod 3 to rotate counterclockwise through the push rod matching portion 3-4, and the second finger 3-3 of the push rod 3 abuts against the push rod 4-0 to reset the circuit breaker; therefore, the acting force of the return elastic element 2 on the push rod 3 comes from the restoring force generated by the elastic deformation of the return elastic element 2. As shown in fig. 1-3, when the circuit breaker is in a closed state, the movable contact 7a is closed with the fixed contact and separated from the driving lever matching portion 1-2 of the driving lever 1, and the second end 2-1 of the spring of the elastic return element 2 is restored to abut against the third section 1-4 of the driving lever 1, so that the driving lever 1, the elastic return element 2 and the push rod 3 are all in a free rotation state (the "free rotation state" means that the three are not subjected to any external force causing a rotation or rotation trend, and the three can not correspondingly rotate until the push rod 3 is subjected to an acting force from the push rod 4-0), so as to prepare for the next action of the magnetic flux release 4.

As shown in fig. 1, 4 and 7, for the utility model discloses a layout of circuit breaker: the magnetic flux release 4 and the reset mechanism are both positioned on one side below the operating mechanism and between the arc inlet side of the arc extinguish chamber and one wiring terminal of the circuit breaker; the driving lever 1, the reset elastic piece 2 and the push rod 3 are all located on one side of the magnetic flux release 4 and located between the arc extinguish chamber and the magnetic flux release 4, and the driving lever 1 and the magnetic flux release 4 are located on two sides of the push rod 3.

The operating mechanism is characterized in that one end of the operating mechanism locking piece 3a is rotatably arranged below one side of the handle 2, the jump buckle piece 4a and the lever 6a are rotatably arranged on the side of the other side of the handle 2, the other end of the locking piece 3a extends to the other side of the handle 2 from the lower side of the handle 2 to be in snap fit with the jump buckle piece 4a, the second connecting rod 5a is basically horizontally arranged below the handle 2, one end of the second connecting rod 5a is hinged with the first connecting rod 2a and slides along the waist-shaped groove, and the other end of the second connecting rod 5a is connected with the lever 6 a. Preferably, the snap fastener 4a is mounted to rotate coaxially with the lever 6a, and is stacked above the lever 6 a. The utility model discloses a hasp piece 3a, buckle piece 3a, waist type groove, jump buckle piece 4a, buckle piece 3a one end is rotated the installation, and the other end is equipped with and jumps buckle piece 4a hasp complex jump buckle hasp portion, waist type groove sets up between hasp piece 3 a's rotation axis and jump buckle hasp portion, jump buckle piece 4a one end is rotated the installation, and the other end is equipped with the dropout drive division that is used for triggering the dropout, and jump buckle piece 4a towards the side of hasp piece 3a be equipped with hasp piece 3a jump buckle portion sliding fit's glide plane, be equipped with on the glide plane with jump buckle hasp portion hasp complex bellied hasp platform.

The transmission rod 8a is arranged above the lever 6a and the movable contact in a laminated mode, and the pull rod 1 is arranged between the lever 6a and the transmission rod 8a in a laminated mode. The transmission rod 8a is L-shaped and comprises a transverse arm and a vertical arm, the transverse arm is basically horizontally arranged, the vertical arm is vertically arranged, a long-strip-shaped sliding hole is formed in the joint of the transverse arm and the vertical arm, the transverse arm is arranged above the lever 6a and the moving contact in a stacked mode, the end portion of the transverse arm is connected with the jump buckle piece 4a, and the end portion of the vertical arm is matched with the push rod 3. One end of the deflector rod 1 is rotatably arranged on a transmission rod shaft of the shell h through a deflector rod mounting part 1-0, and a strip-shaped sliding hole of the transmission rod 8a is sleeved on the transmission rod shaft and is stacked above the deflector rod 1.

The general release reset structure of this embodiment has compact and reasonable layout structure, and is convenient for utilize the gap layout between each mechanism of the circuit breaker.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (15)

1. The utility model provides a magnetic flux release reset structure, includes magnetic flux release (4) and canceling release mechanical system, its characterized in that: the reset mechanism comprises a driving lever (1), a reset elastic piece (2) and a push rod (3), and the driving lever (1) and the push rod (3) are respectively pivoted;

the push rod (3) is respectively matched with an operating mechanism of the circuit breaker and the magnetic flux release (4), when the magnetic flux release (4) acts, a push rod (4-0) of the magnetic flux release (4) drives the push rod (3) to rotate, and the operating mechanism is driven to release through the push rod (3);

after the circuit breaker is tripped and is opened, an operating mechanism or a moving contact (7a) of the circuit breaker moves to drive a driving lever (1) to rotate, the driving lever (1) applies acting force to a push rod (3) through a reset elastic piece (2), and the push rod (3) rotates in the direction of resetting the push rod (4-0);

after the breaker is switched on, the moving contact (7a) is separated from the driving lever (1).

2. The magnetic flux release reset structure of claim 1, wherein: the acting force applied to the push rod (3) by the reset elastic part (2) is 110-130% of the reset force for resetting the push rod (4-0).

3. The magnetic flux release reset structure of claim 1, wherein: the reset elastic piece (2) is arranged on the shifting rod (1).

4. The magnetic flux release reset structure of claim 3, wherein: the reset elastic piece (2) is a torsion spring and comprises a first end (2-0) and a second end (2-1) of the torsion spring; the deflector rod (1) comprises a deflector rod spring shaft (1-2-0), the torsion spring is sleeved on the deflector rod spring shaft (1-2-0), the first end (2-0) of the torsion spring is matched with the deflector rod (1), and the second end (2-1) of the torsion spring is matched with the push rod (3).

5. The magnetic flux release reset structure of claim 1, wherein: the shifting lever (1) further comprises a shifting lever matching part (1-2) matched with the movable contact (7a), and the shifting lever matching part (1-2) protrudes towards the direction of the movable contact (7 a).

6. The magnetic flux release reset structure of claim 4, wherein: the driving lever (1) comprises a driving lever mounting part (1-0), a driving lever first section (1-1), a driving lever matching part (1-2), a driving lever second section (1-3), a driving lever third section (1-4) and a driving lever limiting part (1-5) which are sequentially connected, the driving lever (1) is rotatably mounted on a shell (h) of the circuit breaker through the driving lever mounting part (1-0), a driving lever spring shaft (1-2-0) is arranged on one side of the driving lever matching part (1-2), a torsion spring first end (2-0) is matched with the driving lever first section (1-1), and a torsion spring second end (2-1) is limited between the driving lever second section (1-3) and the driving lever limiting part (1-5) and is opposite to the driving lever third section (1-4).

7. The magnetic flux release reset structure of claim 1, wherein: one end of the push rod (3) is matched with the operating mechanism, the middle part of the push rod is rotatably arranged on a shell (h) of the circuit breaker, and the other end of the push rod is matched with the reset elastic piece (2).

8. The magnetic flux release reset structure of claim 7, wherein: the push rod (3) comprises a first push rod finger (3-1), a push rod installation part (3-2), a second push rod finger (3-3) and a push rod matching part (3-4), which are sequentially connected, the push rod (3) is rotatably arranged on the shell (h) through the push rod installation part (3-2), the first push rod finger (3-1) is matched with the operating mechanism, the second push rod finger (3-3) is matched with the push rod (4-0), and the push rod matching part (3-4) is matched with the reset elastic part (2).

9. The magnetic flux release reset structure of claim 8, wherein: the reset elastic piece (2) is a torsion spring, and the push rod matching part (3-4) is provided with a matching part slot (3-4-0) matched with one end of the torsion spring.

10. The magnetic flux release reset structure of claim 1, wherein: the operating mechanism comprises a locking piece (3a) and a tripping piece (4a) which are respectively arranged in a rotating way, and the locking piece (3a) and the tripping piece (4a) are in hasp matching; the push rod (3) is in driving fit with the tripping piece (4a) to drive the tripping piece (4a) to rotate, so that the tripping piece (4a) is disengaged from the hasp of the locking piece (3a), and the operating mechanism is tripped.

11. The magnetic flux release reset structure of claim 10, wherein: the operating mechanism further comprises a transmission rod (8), and the push rod (3) drives the jump fastener (4a) to rotate through the transmission rod (8), so that the jump fastener (4a) is disengaged from the snap fit of the locking fastener (3 a).

12. The magnetic flux release reset structure of claim 11, wherein: one end of the transmission rod (8) is movably connected with the tripping piece (4a), the other end of the transmission rod is matched with the push rod (3), a long strip-shaped sliding hole is formed in the middle of the transmission rod (8), and the transmission rod (8) is arranged on a shell (h) of the circuit breaker in a sliding fit mode through the long strip-shaped sliding hole and the transmission rod shaft.

13. The magnetic flux release reset structure of claim 10, wherein: the operating mechanism further comprises a handle (1a), a first connecting rod (2a) and a second connecting rod (5a), one end of the first connecting rod (2a) is rotatably connected with the handle (1a), the other end of the first connecting rod penetrates through one end of the second connecting rod (5a) and then is inserted into a waist-shaped groove in the locking piece (3a) in a sliding mode, the other end of the second connecting rod (5a) is connected with a lever (6a) in a driving mode to drive the lever (6a) to rotate, the lever (6a) is connected with a movable contact (7a) in a driving mode, and the lever resetting elastic piece is connected with the lever (6 a).

14. A circuit breaker comprising the magnetic flux release reset structure of any one of claims 1-13.

15. The circuit breaker of claim 14, wherein: reset mechanism and magnetic flux release (4) of magnetic flux release reset structure all lie in operating device below one side, lie in the arc side of advancing of explosion chamber and between the binding post of circuit breaker, driving lever (1), elastic component (2) and push rod (3) that reset all lie in magnetic flux release (4) one side, lie in between explosion chamber and magnetic flux release (4), and driving lever (1) and magnetic flux release (4) lie in push rod (3) both sides.

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