CN116344277A - Magnetic flux release resetting structure and circuit breaker - Google Patents

Abstract

The invention relates to the field of low-voltage electricity, in particular to a reset structure of a magnetic flux release, which comprises a deflector rod, a push rod and a reset elastic piece, wherein the deflector rod and the push rod are respectively arranged in a rotating way; the push rod is respectively matched with an operating mechanism of the circuit breaker and the magnetic flux release, and when the magnetic flux release acts, the push rod of the magnetic flux release drives the push rod to rotate and the operating mechanism is driven to release through the push rod; the switching-on mechanism is connected with the switching-off elastic piece, the switching-off elastic piece is connected with the switching-on mechanism, the switching-on elastic piece is connected with the switching-off mechanism, the switching-on elastic piece is connected with the switching-on mechanism, the switching-off elastic piece is connected with the switching-on mechanism, and the switching-off elastic piece is connected with the switching-off mechanism; the magnetic flux release resetting structure can realize reliable resetting of the magnetic flux release, and the breaking process of the circuit breaker is not affected. The invention also relates to a circuit breaker comprising the magnetic flux release resetting structure, and the circuit breaker can realize reliable resetting of the magnetic flux release.

Description

Magnetic flux release reset structure and circuit breaker

technical field

The invention relates to the field of low-voltage electrics, in particular to a magnetic flux release reset structure and a circuit breaker including the magnetic flux release reset structure.

Background technique

The residual current operated circuit breaker whose action function has nothing to do with the power supply voltage usually uses the leakage signal to directly trigger the action of the magnetic flux release, and then push the operating mechanism to trip to disconnect the circuit. Before the residual circuit action circuit breaker closes again, it is necessary to overcome the reaction force of the magnetic flux release by external force, so that the armature of the magnetic flux release is in contact with the yoke, so that the ejector rod of the magnetic flux release can be reset , ready for the reclosing of the residual current operated circuit breaker.

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

1. The reset structure of the existing magnetic flux release affects the opening process of the circuit breaker;

2. If the restoring force of the reset structure of the existing magnetic flux release has too much impact on the magnetic flux release, it will damage the contact surface between the armature and the yoke, greatly reducing the service life of the magnetic flux release;

3. The structure of the reset structure of the existing magnetic flux release is complex.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art, to provide a magnetic flux release reset structure, which can realize the reliable reset of the magnetic flux release, and does not affect the opening process of the circuit breaker; also provides a circuit breaker , which includes the resetting structure of the magnetic flux release, and can realize reliable resetting of the magnetic flux release.

To achieve the above object, the present invention adopts the following technical solutions:

A reset structure for a magnetic flux release, including a magnetic flux release and a reset mechanism, the reset mechanism includes a shift lever and a push rod that are respectively rotatably arranged, and a reset elastic member;

The push rods cooperate with the operating mechanism of the circuit breaker and the magnetic flux release respectively. When the magnetic flux release operates, the push rod of the magnetic flux release drives the push rod to rotate, and the push rod drives the operating mechanism to trip;

The driving lever cooperates with the operating mechanism and the push rod respectively, and the operating mechanism moves to the closing position to drive the driving lever to overcome the reset force of the reset elastic member and rotate to separate the driving lever from the pushing rod. After the circuit breaker is tripped and opened, it is reset. The elastic member drives the driving rod to rotate, and simultaneously the driving rod drives the push rod to rotate in the direction of resetting the ejector rod.

Preferably, the force of the reset elastic member on the shift lever is set to be 110%-130% of the reset force of the push rod.

Preferably, the operating mechanism includes a snap-fit lock and jumper; when the magnetic flux release operates, the push rod drives the jumper to rotate to release the snap fit with the lock, so that Operating mechanism tripped.

Preferably, the operating mechanism further includes a transmission rod, one end of the transmission rod is hinged to the jumper, and the other end is drivingly matched with the push rod.

Preferably, the middle part of the push rod is rotatably arranged on the housing of the circuit breaker, one end cooperates with the transmission rod, and the other end cooperates with the driving rod and the magnetic flux release respectively.

Preferably, the push rod includes a push rod first finger, a push rod installation part and a push rod second finger, the push rod installation part is a U-shaped structure, including a bottom plate of the installation part and two installation arms arranged oppositely, and the push rod passes through The installation arm is rotatably arranged on the housing. The first finger of the push rod and the second finger of the push rod are respectively connected to the bottom plate of the installation part and are respectively located on both sides of the installation part of the push rod. The first finger of the push rod cooperates with the transmission rod, and the second finger of the push rod The fingers cooperate with the lever and the magnetic flux release respectively.

Preferably, the operating mechanism further includes a lever, the lever is rotated and the moving contact is installed on the lever; when the circuit breaker is closed, the lever drives the moving contact to contact the static contact and drives the driving lever to rotate to make it contact with the pushing contact. Rod detached.

Preferably, the reset mechanism further includes a pull rod, which is slidably arranged on the housing of the circuit breaker, and the lever cooperates with the driving rod through the pull rod.

Preferably, the lever includes a lever shaft for driving connection with the moving contact of the circuit breaker, and the lever shaft is drivingly matched with the driving rod through the pull rod.

Preferably, one end of the driving rod is rotatably arranged on the housing of the circuit breaker, and the other end pushes the push rod to reset through the push rod.

Preferably, the tie rod includes a first section of the tie rod, a second section of the tie rod, a third section of the tie rod and a fourth section of the tie rod connected in sequence, the first section of the tie rod, the second section of the tie rod and the third section of the tie rod are located on the first plane and The whole has a Z-shaped structure, and the fourth section of the pull rod is perpendicular to the first plane and cooperates with the driving rod.

Preferably, the operating mechanism also includes a handle, a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the handle in rotation, and the other end passes through one end of the second connecting rod and is slidably inserted into the latch on the latch. In the waist-shaped groove, the other end of the second connecting rod is connected with the lever drive to drive the lever to rotate, and the lever reset elastic member is connected with the lever.

Preferably, the lever includes a lever installation part, a first section of the lever, a matching part of the lever, a second section of the lever, and a driving part of the lever, which are connected in sequence, and the lever is arranged in the casing through the rotation of the lever installation part. Above, the driving rod matching part is drivingly matched with the pull rod, and the driving rod driving part is respectively matched with the reset elastic member and the push rod for driving.

A circuit breaker includes the resetting structure of the magnetic flux release.

Preferably, the reset mechanism of the magnetic flux release reset structure and the magnetic flux release are both located on the lower side of the operating mechanism, between the arc inlet side of the arc extinguishing chamber and a terminal of the circuit breaker, and the pull rod , the driving rod, the push rod and the reset elastic part are all located on one side of the magnetic flux release, between the arc extinguishing chamber and the magnetic flux release, and the driving rod and the magnetic flux release are respectively located on both sides of the push rod.

The resetting structure of the magnetic flux release of the present invention has simple structure and reliable operation, and can reliably reset the magnetic flux release after the circuit breaker trips and opens due to the action of the magnetic flux release; and drives the magnetic flux release The reset force of the push rod of the buckle comes from the reset elastic member, so the reset mechanism will not affect the opening process of the circuit breaker; and the reset force of the reset elastic member can be adjusted, so as to avoid the reset mechanism from being affected by the magnetic flux. Buckle damage.

In addition, the force of the reset elastic member on the driving rod is set to be 110%-130% of the reset force of the push rod. Further, the force of the reset elastic member on the driving rod is set to be 120% of the reset force of the push rod. The above-mentioned set value of the force of the reset elastic member on the lever can drive the ejector rod of the magnetic flux release to reset reliably on the one hand, and prevent the force from causing the armature and the yoke of the magnetic flux release to be strongly impacted by excessive force. In case of damage, it is beneficial to improve the service life of the magnetic flux release.

The circuit breaker of the present invention includes the reset structure of the magnetic flux release, which can realize the reliable reset of the magnetic flux release and has a long service life.

Description of drawings

Fig. 1 is a schematic structural diagram of the principle structure of the reset structure of the magnetic flux release of the circuit breaker of the present invention, and the circuit breaker is in the normal opening or tripping opening state;

Fig. 2 is a schematic structural diagram of the principle structure of the reset structure of the magnetic flux release of the circuit breaker of the present invention, and the circuit breaker is in the closing state;

Fig. 3 is a structural schematic diagram of the circuit breaker of the present invention, and the circuit breaker is in a normal opening state;

Fig. 4 is a schematic diagram of the reset structure of the magnetic flux release in which the circuit breaker of the present invention is in the normal opening state or tripped;

Fig. 5 is a structural schematic diagram of the circuit breaker of the present invention, and the circuit breaker is in the closing state;

Fig. 6 is a schematic diagram of the reset structure of the magnetic flux release of the circuit breaker in the closing state of the present invention;

Fig. 7 is a structural schematic diagram of the circuit breaker of the present invention, the action of the magnetic flux release makes the operating mechanism trip and the moving contact and the static contact have not yet been disconnected;

Fig. 8 is a structural schematic diagram of the reset mechanism of the circuit breaker of the present invention in the state shown in Fig. 7;

Fig. 9 is a structural schematic diagram of the lever of the present invention;

Fig. 10 is a schematic structural view of the push rod of the present invention;

Fig. 11 is a structural schematic diagram of the lever of the present invention;

Fig. 12 is a schematic structural view of the pull rod of the present invention.

Detailed ways

The specific implementation of the reset structure of the circuit breaker and the magnetic flux release of the present invention will be further described below with reference to the embodiments given in the accompanying drawings 1-12. The reset structure of the circuit breaker and the magnetic flux release of the present invention is not limited to the description of the following embodiments.

As shown in Figures 3, 5, and 7, the present invention discloses a circuit breaker, which includes a housing h, an operating mechanism and a contact system arranged in the housing h; the contact system includes moving contacts and static contacts used in conjunction , the operating mechanism cooperates with the moving contact drive to drive the contact system to close or open, so that the circuit breaker is closed or opened.

The operating mechanism of the circuit breaker of the present invention can be realized through the prior art, and at least the following two structural forms of the operating mechanism can be used:

As shown in Figures 3, 5, and 7, the first structural form of the operating mechanism is: the operating mechanism adopts a cam-five-bar linkage mechanism, which includes a handle 1a, a first connecting rod 2a, a locking member 3a, The jumper 4a, the second connecting rod 5a and the lever 6a, the handle 1a, the locker 3a, the jumper 4a and the lever 6a are respectively rotated and arranged on the shell h, and the locker 3a and the jumper 4a are snap-fitted, The jumper 4a is driven by an external force and rotates to release the snap fit with the locker 3a, so that the operating mechanism is released. One end of the first connecting rod 2a is connected to the handle 1a in rotation, and the other end passes through the second connecting rod 5a One end is slidingly inserted into the waist-shaped groove on the locking member 3a, and the other end of the second connecting rod 5a is drivingly connected to the lever 6a to drive the lever 6a to rotate, and the lever 6a is drivingly connected to the moving contact of the circuit breaker. Further, the operating mechanism also includes a lever return elastic member 7a, which is connected to the lever 6a so that the lever 6a has a tendency to rotate to the breaking position. In this embodiment, the lever return elastic member 7a is a torsion spring, which is sleeved on the On the rotating shaft of the lever 6a, one end cooperates with the housing h, and the other end cooperates with the lever 6a to provide force to the lever 6a. When the circuit breaker is opened or tripped, the lever 6a has a tendency to rotate to the breaking position.

The second structural form of the operating mechanism is: the operating mechanism adopts a four-bar linkage mechanism, which includes a handle 1a, a third connecting rod, a lock part, a jumper part and a lever 6a, and the handle 1a and the lever 6a rotate respectively Set on the housing h, the lock part and the jumper part are respectively rotated and arranged on the lever 6a and snap-fitted, and the jumper part is driven by an external force to rotate to release the snap fit with the lock part, so that the operating mechanism To trip, the handle 1a is drivingly matched with the locking part through the third connecting rod, and the lever 6a is drivingly connected with the moving contact of the circuit breaker.

The circuit breaker of the present invention preferably adopts the operating mechanism of the first structural form.

As shown in Figure 1-8, the reset structure of the magnetic flux tripper is applied to a circuit breaker, which includes a magnetic flux tripper 4 and a reset mechanism; the reset mechanism includes a driving lever 2 and a push rod respectively rotated and set 3, and the reset elastic member 5; the push rod 3 cooperates with the operating mechanism of the circuit breaker and the magnetic flux release 4 respectively, and the driving rod 2 cooperates with the operating mechanism and the push rod 3 respectively; as shown in Figure 7-8 As shown, when the magnetic flux release 4 is in action, the ejector rod 4-0 of the magnetic flux release 4 is ejected to drive the push rod 3 to rotate, and the push rod 3 drives the operating mechanism to trip, so that the circuit breaker enters the tripped state ; As shown in Figures 3-4 and 7-8, after the circuit breaker is tripped and opened due to the action of the magnetic flux release 4, the reset elastic member 5 drives the lever 2 to rotate, and the lever 2 drives the push rod 3 at the same time Rotate in the direction of resetting the ejector rod 4-0; as shown in Figure 5-6, when the circuit breaker is closed, the operating mechanism moves to the closing position to drive the lever 2 to overcome the reset force of the reset elastic member 5 to rotate the dial The rod 2 is separated from the push rod 3 to prepare for the next action of the magnetic flux release 4 . Further, as shown in Figure 3-4, after the circuit breaker is normally opened, the operating mechanism avoids the lever 2, the reset elastic member 5 drives the lever 2 to rotate, and the lever 2 drives the push rod 3 so that it has a direction The push rod 4-0 tends to rotate in the reset direction; that is, after the lever 6a drives the movable contact to rotate to the breaking position, it is separated from the pull rod 1, and the pull rod 1 no longer exerts force on the driving rod 2. The reset mechanism is simple in structure and reliable in action, and can make the magnetic circuit breaker trip and open after the circuit breaker is tripped due to the action of the magnetic flux release (the magnetic flux release can be activated due to a residual current fault or an undervoltage fault, etc.). The magnetic flux tripper can be reliably reset; and the force driving the ejector rod of the magnetic flux tripper to reset comes from the reset elastic part, so the reset mechanism will not affect the opening process of the circuit breaker; and the reset elastic part The reset force can be adjusted to avoid damage to the magnetic flux release by the reset mechanism.

It should be pointed out that the magnetic flux release 4 of the circuit breaker of the present invention is used to realize leakage protection. When the leakage current is detected, the magnetic flux release 4 acts to trip the operating mechanism; therefore, the circuit breaker also includes a Structures for detecting leakage currents, such as leakage current detection coils. Alternatively, the magnetic flux release 4 can also be used for undervoltage protection, so the circuit breaker also includes a structure for detecting voltage signals.

The force of the reset elastic member 5 on the driving rod 2 is set to be 110%-130% of the reset force of the push rod 4-0. Further, the force of the reset elastic member 5 on the driving rod 2 is set to be 120% of the reset force of the push rod 4 . The above-mentioned set value of the force of the reset elastic member on the lever can drive the ejector rod of the magnetic flux release to reset reliably on the one hand, and prevent the force from causing the armature and the yoke of the magnetic flux release to be strongly impacted by excessive force. In case of damage, it is beneficial to improve the service life of the magnetic flux release.

As shown in FIG. 3-8 , the reset elastic member 5 is a torsion spring, one end of which is in limited fit with the housing h, and the other end is in drive fit with the shift lever 2 . Of course, as other embodiments, the return elastic member 5 can also be a compression spring or a tension spring or a leaf spring.

As shown in Figure 7-8, when the magnetic flux release 4 operates, the ejector rod 4-0 of the magnetic flux release 4 is ejected to drive the push rod 3 to rotate, and the push rod 3 drives the jumper 4a to rotate to make It releases the snap fit with the locking member 3a to release the operating mechanism. Further, the operating mechanism further includes a transmission rod 8a, one end of the transmission rod 8a is hinged to the jumper 4a, and the other end is drivingly matched with the push rod 3. Further, the transmission rod 8a is provided with a transmission rod waist-shaped hole, and the housing h is provided with a transmission rod shaft, and the transmission rod 8a is slidably arranged on the transmission rod shaft through the transmission rod waist-shaped hole; preferably, the transmission rod shaft and The rotating shafts of driving lever 2 are the same shaft.

As shown in Fig. 1-8, the middle part of the push rod 3 is rotatably arranged on the housing h, one end cooperates with the transmission rod 8a, and the other end cooperates with the driving rod 2 and the magnetic flux release 4 respectively.

As shown in Figures 4, 6, 8, and 10, it is an embodiment of the push rod 3: the push rod 3 includes a push rod first finger 3-1, a push rod installation part 3-2 and a push rod second finger. Refers to 3-3; the push rod installation part 3-3 is a U-shaped structure, including the bottom plate of the installation part and two opposite installation arms. The push rod 3 is installed on the housing h by the rotation of the installation arms. The finger 3-1 and the second finger 3-2 of the push rod are respectively connected to the bottom plate and are respectively located on both sides of the push rod installation part 3-2. The first finger 3-1 of the push rod cooperates with the transmission rod 8a, and the second finger 3-2 of the push rod -3 cooperates with the driving lever 2 and the magnetic flux tripper 4 respectively. Further, the push rod 3 is an integral structure, which is formed by cutting and bending a metal plate or an integrally formed plastic part.

As shown in Fig. 5-6, when the circuit breaker of the present invention is switched on, the lever 6a of the operating mechanism drives the driving rod 2 to rotate to separate from the push rod 3. Further, the reset mechanism further includes a pull rod 1 , which is slidably arranged on the housing h of the circuit breaker, and the lever 6a is driven to cooperate with the driving rod 2 through the pull rod 1 . Further, the two ends of the pull rod 1 cooperate with the lever 6a and the driving rod 2 respectively.

As another embodiment, the lever 6a of the operating mechanism can also directly drive the shift lever 2 to rotate, but the structure of the lever 6a needs to be adapted and will not be described here.

As shown in FIG. 11 , the lever 6 a includes a lever shaft 6 - 0 a for driving connection with the moving contact of the circuit breaker, and the lever shaft 6 - 0 a is drivingly matched with the driving rod 2 through the pull rod 1 .

As shown in Figures 5-6, one end of the driving rod 2 is rotatably arranged on the housing h, and the other end is drivingly matched with the push rod 3 to push the push rod 4-0 to reset through the push rod 3 . Further, the middle part of the shifting rod 2 cooperates with the pull rod 1 .

As shown in Figures 4, 6, and 8-9, it is an embodiment of the lever 2: the lever 2 includes a lever mounting part 2-0 connected in sequence, a first section of the lever 2-1, a lever The lever matching part 2-2, the second section of the lever 2-3 and the lever driving part 2-4, the lever 2 is rotated and arranged on the housing h through the lever mounting part 2-0, and the lever matching part 2-2 Cooperating with the driving of the pull rod 1, the driving parts 2-4 of the driving rod are respectively cooperating with the reset elastic member 5 and the push rod 3. Further, the second section 2-3 of the driving rod and the driving part 2-4 of the driving rod form an L-shaped structure as a whole.

Preferably, as shown in Figures 4, 6, and 8-9, the middle part of the lever matching part 2-2 is provided with a lever socket, and the fourth section 1-3 of the pull rod of the pull rod 1 is rotated and inserted in the lever socket Inside.

Preferably, as shown in FIG. 9 , the lever 2 further includes a lever limiter 2-5, and the lever limiter 2-5 and the second segment 2-3 of the lever are respectively connected to the lever driving portion 2-5. 4. Both ends are connected; one end of the reset elastic member 5 cooperates with the limit part 2-5 of the driving lever.

As shown in Figures 3-8 and 12, it is an embodiment of the tie rod 1: the tie rod 1 includes a first tie rod section 1-0, a tie rod second section 1-1, and a tie rod third section 1- 2 and the fourth section 1-3 of the tie rod, the first section 1-0 of the tie rod, the second section 1-1 of the tie rod and the third section 1-2 of the tie rod are located on the first plane, and the whole is in a Z-shaped structure, and the fourth section of the tie rod 1 -3 is perpendicular to the first plane and is drivingly matched with the driving rod 2 . Further, the tie rod 1 is an integral structure formed by bending a metal rod.

As shown in Figures 3, 5, and 7, the connection between the first section 1-0 of the tie rod and the second section 1-1 of the tie rod is an arc-shaped connection part 1-0-1; the housing h is provided with a support The ribs, the connecting part 1-0-1 are slidably arranged on the supporting ribs.

As shown in Figure 11, it is an embodiment of the lever 6a: one end of the lever 6a is provided with a lever shaft hole 6-1a, and the other end is provided with two lever shafts 6-0a, and the lever 6a passes through the rigid rod shaft hole 6 -1 rotation is set on the housing h, and two lever shafts 6-0 are respectively set on both sides of the lever 6a.

The following is the action process of the magnetic flux release reset structure of the circuit breaker of the present invention:

As shown in Figure 2, 5-6, when the circuit breaker of the present invention is closed, the lever 6a of the operating mechanism drives the moving contact and the static contact to close, the lever 6a rotates to the closing position, and the lever shaft 6-0a of the lever 6a Push the first section 1-0 of the lever 1 to make the lever 1 slide to the left, and the lever 1 drives the lever 2 to rotate clockwise through the fourth section 1-3 of the lever to make the second section 2-3 of the lever 2 Separate from the push rod 3, and simultaneously store energy in the reset elastic member 5. As shown in Figures 1 and 3-4, after the circuit breaker of the present invention is normally opened or tripped (not shown in the figure), the lever 6a is rotated to the opening position or the tripping position (the two are the same position or different positions) , That is to say, when the circuit breaker is normally opened or tripped, the lever 6a releases the pull rod 1, then the reset elastic member 5 releases energy, drives the driving rod 2 to rotate counterclockwise, and the second section of the driving rod 2 -3 Drive the push rod 3 to make it rotate counterclockwise (that is, turn to the reset direction of the ejector rod 4-0 of the magnetic flux tripper 4) to drive the ejector rod 4-0 to reset, and at the same time, the driving rod 2 drives the pull rod 1 to the right Slide sideways. As shown in Figure 7-8, when the magnetic flux tripper 4 of the circuit breaker of the present invention operates, the ejector rod 4-0 is ejected to drive the push rod 3 to rotate clockwise, and the other end of the push rod 3 is driven to jump through the transmission rod 8a. The buckle 4a rotates so that it releases the snap fit with the lock buckle 3, so that the operating mechanism is released.

As shown in Figures 3, 5, and 7, it is a layout of the circuit breaker of the present invention: the reset mechanism of the magnetic flux release reset structure and the magnetic flux release 4 are located on the lower side of the operating mechanism, located Between the arc inlet side of the arc chamber (not shown in the figure) and a terminal of the circuit breaker; the pull rod 1, the driving rod 2, the push rod 3 and the reset elastic member 5 are all located on the side of the magnetic flux release 4 , located between the arc extinguishing chamber and the magnetic flux release 4, and the driving rod 2 and the magnetic flux release 4 are respectively located on both sides of the push rod 3.

The rotation of one end of the locking member 3a of the operating mechanism is installed under one side of the handle 2, the jumper 4a and the lever 6a are rotated and installed on the other side of the handle 2, and the other end of the locking member 3a is removed from the handle. The bottom of the handle 2 extends to the other side of the handle 2 to snap fit with the jumper 4a. The second connecting rod 5a is horizontally arranged below the handle 2. One end of the second connecting rod 5a is hinged with the first connecting rod 2a and along the The waist groove slides, and the other end is connected with the lever 6a. Preferably, the jumper 4a is coaxially rotatable with the lever 6a, and is stacked above the lever 6a. One end of the lock member 3a is rotated and installed, and the other end is provided with a jumper buckle part that is snap-fitted with the jumper member 4a. The waist-shaped groove is arranged on the rotation axis of the lock member 3a and the jumper hasp In between, one end of the jumper 4a is rotated and installed, and the other end is provided with a trip driving part for triggering tripping, and the side of the jumper 4a facing the locker 3a is provided with a jumper with the locker 3a The sliding surface of the buckle part is slidably matched, and the sliding surface is provided with a raised buckle platform that is buckled with the jumper buckle part.

The transmission rod 8a is stacked above the lever 6a and the moving contact, and the pull rod 1 is stacked between the lever 6a and the transmission rod 8a. The transmission rod 8a is L-shaped, comprising a substantially horizontal cross arm and a vertical vertical arm, and a transmission rod waist hole is provided at the junction of the cross arm and the vertical arm, and the cross arm is stacked between the lever 6a and the moving arm. The top of the contact and the end are connected with the jumper 4a, and the end of the vertical arm is matched with the push rod 3.

The layout of the reset structure of the on-off release in this embodiment is compact and reasonable, and it is convenient to use the layout of the gaps between the various mechanisms of the circuit breaker.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

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 deflector rod (2) and a push rod (3) which are respectively arranged in a rotating way, and a reset elastic piece (5);

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, the 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);

the switching-on mechanism is characterized in that the switching-off lever (2) is respectively matched with the operating mechanism and the push rod (3), the operating mechanism moves to a switching-on position to drive the switching-off lever (2) to rotate against the reset force of the reset elastic piece (5) so as to separate the switching-off lever (2) from the push rod (3), and after the circuit breaker is tripped and switched off, the reset elastic piece (5) drives the switching-off lever (2) to rotate, and meanwhile the switching-off lever (2) drives the push rod (3) to rotate in the reset direction of the ejector rod (4-0).

2. The magnetic flux trip reset structure of claim 1, wherein: the acting force of the reset elastic piece (5) on the deflector rod (2) is set to be 110% -130% of the reset force of the ejector rod (4-0).

3. The magnetic flux trip reset structure of claim 1, wherein: the operating mechanism comprises a snap-fit locking piece (3 a) and a jump piece (4 a); when the magnetic flux release (4) acts, the push rod (3) drives the trip piece (4 a) to rotate so as to release the snap fit with the trip piece (3 a), and the operating mechanism is released.

4. The magnetic flux trip reset structure of claim 3, wherein: the operating mechanism further comprises a transmission rod (8 a), one end of the transmission rod (8 a) is hinged with the jump fastener (4 a), and the other end of the transmission rod is in driving fit with the push rod (3).

5. The magnetic flux trip reset structure of claim 4, wherein: the middle part of the push rod (3) is rotatably arranged on a shell (h) of the circuit breaker, one end of the push rod is matched with the transmission rod (8 a), and the other end of the push rod is respectively matched with the deflector rod (2) and the magnetic flux release (4).

6. The magnetic flux trip reset structure of claim 5, wherein: the push rod (3) comprises a first push rod finger (3-1), a push rod mounting part (3-2) and a second push rod finger (3-3), wherein the push rod mounting part (3-2) is of a U-shaped structure and comprises a mounting part bottom plate and two mounting arms which are oppositely arranged, the push rod (3) is rotatably arranged on a shell (h) through the mounting arms, the first push rod finger (3-1) and the second push rod finger (3-3) are respectively connected with the mounting part bottom plate and are respectively located at two sides of the push rod mounting part (3-2), the first push rod finger (3-1) is matched with a transmission rod (8 a), and the second push rod finger (3-3) is respectively matched with the deflector rod (2) and the magnetic flux release (4).

7. The magnetic flux trip reset structure of claim 1, wherein: the operating mechanism further comprises a lever (6 a), the lever (6 a) is rotatably arranged, and the moving contact is arranged on the lever (6 a); when the circuit breaker is switched on, the lever (6 a) drives the moving contact to contact with the fixed contact and drives the deflector rod (2) to rotate so as to separate the deflector rod from the push rod (3).

8. The magnetic flux trip reset structure of claim 7, wherein: the reset mechanism further comprises a pull rod (1), the pull rod (1) is arranged on a shell (h) of the circuit breaker in a sliding mode, and the lever (6 a) is in driving fit with the deflector rod (2) through the pull rod (1).

9. The magnetic flux trip reset structure of claim 7, wherein: the lever (6 a) comprises a lever shaft (6-0 a) which is used for being in driving connection with a moving contact of the circuit breaker, and the lever shaft (6-0 a) is in driving fit with the deflector rod (2) through the pull rod (1);

one end of the deflector rod (2) is rotatably arranged on a shell (h) of the circuit breaker, and the other end of the deflector rod pushes the ejector rod (4-0) to reset through the push rod (3);

the pull rod (1) comprises a pull rod first section (1-0), a pull rod second section (1-1), a pull rod third section (1-2) and a pull rod fourth section (1-3) which are sequentially connected, wherein the pull rod first section (1-0), the pull rod second section (1-1) and the pull rod third section (1-2) are positioned on a first plane and are integrally in a Z-shaped structure, and the pull rod fourth section (1-3) is perpendicular to the first plane and is in driving fit with the deflector rod (2);

the operating mechanism further comprises a handle (1 a), a first connecting rod (2 a) and a second connecting rod (5 a), one end of the first connecting rod (2 a) is rotationally connected with the handle (1 a), the other end of the first connecting rod passes through one end of the second connecting rod (5 a) and is then inserted into a waist-shaped groove on the locking piece (3 a) in a sliding mode, the other end of the second connecting rod (5 a) is in driving connection with the lever (6 a) to drive the lever (6 a) to rotate, and the lever reset elastic piece (7 a) is connected with the lever (6 a);

the driving lever (2) comprises a driving lever installation part (2-0), a driving lever first section (2-1), a driving lever matching part (2-2), a driving lever second section (2-3) and a driving lever driving part (2-4) which are sequentially connected, the driving lever (2) is rotatably arranged on the shell (h) through the driving lever installation part (2-0), the driving lever matching part (2-2) is in driving fit with the pull lever (1), and the driving lever driving part (2-4) is respectively in driving fit with the reset elastic piece (5) and the push rod (3).

10. A circuit breaker characterized in that it comprises a magnetic flux trip reset structure according to any one of claims 1-9;

the reset mechanism of the magnetic flux release reset structure and the magnetic flux release (4) are both positioned on one side below the operating mechanism, between the arc inlet side of the arc extinguishing chamber and one wiring terminal of the circuit breaker, the pull rod (1), the deflector rod (2), the push rod (3) and the reset elastic piece (5) are both positioned on one side of the magnetic flux release (4), between the arc extinguishing chamber and the magnetic flux release (4), and the deflector rod (2) and the magnetic flux release (4) are respectively positioned on two sides of the push rod (3).

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