Release reset structure and circuit breaker

Abstract

The release reset structure comprises an operating mechanism, a magnetic flux release and a reset rod, the reset rod is rotationally arranged and can be switched between a first position and a second position, the axis direction of the reset rod serves as the first direction, the magnetic flux release comprises a push rod, the moving direction of the push rod serves as the second direction, and the operating mechanism and the magnetic flux release are arranged in the first direction. The reset rod is located on the same side of the operating mechanism and the magnetic flux release in the second direction. And in the re-buckling process of the operating mechanism, the operating mechanism drives the reset rod to rotate to the second position, and meanwhile, the reset rod drives the push rod, so that the magnetic flux release is reset to the first running state. The circuit breaker comprises the release reset structure. According to the release reset structure and the circuit breaker, the reset rod is rotatably arranged on the same side of the operating mechanism and the magnetic flux release which are arranged side by side, the action relationship between the reset rod and the operating mechanism and the action relationship between the reset rod and the magnetic flux release are simplified, the action cooperation is stable and reliable, and the layout is compact and reasonable.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a release reset structure and a circuit breaker. Background Art

[0002] Molded case circuit breakers are widely used in medium and low voltage circuits to distribute electrical energy and protect lines, power supplies and electrical equipment. The release of the molded case circuit breaker is mainly used to realize the protection functions of the molded case circuit breaker such as overload protection, short circuit protection, delay protection and leakage protection. There are currently many reset structures of the release, but with the increasing demand for miniaturization of circuit breakers, the size of the release part is also required to be reduced and the structure is simplified. However, the current release part includes multiple parts and has a complex structure, which increases the manufacturing cost and assembly cost. Summary of the invention

[0003] The utility model aims to overcome at least one defect of the prior art and provide a release reset structure and a circuit breaker.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A release reset structure comprises an operating mechanism, a magnetic flux release for driving the operating mechanism to trip, and a reset rod for resetting the magnetic flux release, wherein the reset rod is rotatably arranged and can switch between a first position and a second position, the axial direction of the reset rod is the first direction, the magnetic flux release comprises a push rod for driving the operating mechanism to trip, the moving direction of the push rod of the magnetic flux release is the second direction, the first direction, the second direction and the third direction are perpendicular to each other, the operating mechanism and the magnetic flux release are arranged in an array along the first direction, and the reset rod is located on the same side of the operating mechanism and the magnetic flux release in the second direction; when the circuit breaker is closed, the magnetic flux release is in a first operating state; when the magnetic flux release is switched to the second operating state, the push rod drives the operating mechanism to trip; during the re-tripping process of the operating mechanism, the operating mechanism drives the reset rod to rotate to the second position, and the reset rod drives the push rod to reset the magnetic flux release to the first operating state.

[0006] Optionally, the reset rod comprises a reset rod body, from which extend respectively an actuated arm drivingly matched with a rocker arm of the operating mechanism and a reset arm drivingly matched with an actuated surface of the push rod.

[0007] Optionally, the actuated surface is a plane perpendicular to the second direction, and the reset arm includes a first reset arm and a second reset arm connected to each other, and the second reset arm is inclined in a direction away from the actuated surface; when the reset rod is in the first position, the first reset arm and the actuated surface are arranged in parallel and spaced apart; during the tripping process of the operating mechanism, the actuated surface of the push rod moves toward the first reset arm until it contacts the first reset arm; when the reset rod rotates to the second position, the second reset arm abuts against the actuated surface.

[0008] Optionally, the reset rod body is arranged opposite to the rocker arm in the second direction and is staggered with the push rod, and the reset rod body extends toward the actuated surface to form an extension arm connected to the first reset arm.

[0009] Optionally, the extension arm includes a first extension arm, a second extension arm and a third extension arm which are vertically connected in sequence, wherein the first extension arm is connected to the reset rod body, and the third extension arm is vertically connected to the first reset arm; when the reset rod is in the first position, the length direction of the first extension arm is set along the first direction and the width direction is set along the third direction, the length direction of the second extension arm is set along the third direction and the width direction is set along the first direction, and the length direction of the third extension arm is set along the second direction and the width direction is set along the first direction.

[0010] Optionally, the rocker arm and the reset rod body are respectively rotatably arranged on the bracket of the operating mechanism, and the rocker arm and the reset rod body are relatively arranged in the second direction, the reset rod body extends toward the rocker arm to form the driven arm, and the rocker arm is provided with a driving surface that cooperates with the driven arm.

[0011] Optionally, when the reset rod is in the first position, the length of the driven arm is arranged along the second direction and the width direction is arranged along the third direction, and the driving surface of the rocker arm is arranged to be inclined relative to the third direction.

[0012] Optionally, the reset rod body includes two mounting arms rotatably mounted on two outer sides of the bracket respectively, and a connecting arm arranged across the bracket and connected between the two mounting arms.

[0013] Optionally, it also includes a first elastic member for resetting the reset rod; when the circuit breaker is released again, the rocker arm drives the reset rod to store energy in the first elastic member; when the circuit breaker is closed, the first elastic member releases energy to reset the reset rod to the first position.

[0014] Optionally, the flux release includes a release housing and a push rod movably disposed in the release housing, the release housing is provided with a through hole, the reset arm of the reset rod extends into the release housing through the through hole to cooperate with the driven surface, and the push rod extends a trip arm extending from the through hole, which is used to drive the traction rod of the operating mechanism to trip the operating mechanism.

[0015] Optionally, the release housing comprises a cover shell and an upper cover which cover each other, an opening is provided on one side of the release housing, and the upper cover is provided with a first buckle protruding downward, the first buckle is buckled on the cover shell and covers a part of the opening, and the other part of the opening is the through hole;

[0016] And / or, a positioning protrusion protruding downward is provided on the lower side of the upper cover, and a positioning groove cooperating with the positioning protrusion is provided on the upper side of the cover shell;

[0017] And / or, the upper side of the cover shell is provided with an upwardly protruding positioning flange, the positioning flange is provided with a clamping hole, the upper cover is provided with a positioning notch matching with the positioning flange, and the positioning notch is provided with a second buckle matching with the clamping hole.

[0018] Optionally, the flux release includes a fixed yoke, a coil frame mounted on the fixed yoke, a coil sleeved on the coil frame, a static iron core mounted in the coil frame, a moving iron core movably arranged in the coil frame and arranged opposite to the static iron core, a push rod for driving a traction rod of an operating mechanism, and a second elastic member, wherein the push rod is movably arranged to switch between a third position and a fourth position, and when the push rod is in the fourth position, it drives the traction rod to trip the operating mechanism;

[0019] When the flux release is in the first operating state, the push rod is limited and cooperates with the moving iron core in the third position, so that the second elastic member stores energy; when the flux release is in the second operating state, the moving iron core and the push rod are released, and the second elastic member releases energy to drive the push rod to switch to the fourth position.

[0020] Optionally, the push rod includes a cylindrical push rod body, a radial surface on one side of the push rod body is an actuated surface that cooperates with the reset rod drive, the actuated surface extends toward the traction rod to form a trip arm, the push rod body is provided with a receiving groove on the other side and a through hole axially passing through the push rod body, one end of the second elastic member abuts against the receiving groove, and the other end abuts against the fixed magnetic yoke; one end of the moving iron core extends into the receiving groove and is provided with a limiting portion, the limiting portion passes through the through hole and is placed in the limiting groove on the actuated surface, and the limiting groove and the through hole are arranged in a cross shape.

[0021] Optionally, the operating mechanism includes a bracket, a handle, a rocker arm, an energy storage spring, a connecting rod, a crank, a lock and a jump catch connected with a buckle, the handle is connected to the rocker arm, the rocker arm is rotatably installed on the bracket, the jump catch, the lock and the traction rod are respectively rotatably arranged on the bracket, the lock is hasp-connected with the jump catch, the traction rod is limitedly connected to the lock catch, the crank is rotatably installed on the jump catch via a crank shaft, one end of the connecting rod is rotatably connected to the crank via a spring shaft, and the other end is connected to the moving contact for driving the moving contact to rotate, one end of the energy storage spring is connected to the rocker arm, and the other end is connected to the spring shaft at the connection between the connecting rod and the crank; the reset rod is coaxially rotatably arranged with the traction rod.

[0022] A circuit breaker comprises any one of the release reset structures.

[0023] The utility model discloses a release reset structure and a circuit breaker, wherein the reset rod is rotatably arranged on the same side of the operating mechanism and the magnetic flux release arranged side by side, which is beneficial to simplifying the action relationship between the reset rod, the operating mechanism and the magnetic flux release, and the action coordination is stable and reliable, and the layout is compact and reasonable.

[0024] In addition, the first reset arm and the second reset arm are straight structures, and the cooperation between them and the actuated surface of the planar structure makes the driving between the reset rod and the push rod more stable and reliable, and the structure is simple and easy to produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the circuit breaker in the closed state of the utility model;

[0026] Figure 2 It is a three-dimensional diagram of the circuit breaker of the utility model in the closed state;

[0027] Figure 3 It is a cross-sectional view of the circuit breaker of the utility model in the closed state;

[0028] Figure 4 It is a three-dimensional diagram of the circuit breaker of the utility model in the tripped state;

[0029] Figure 5 This is a view of the circuit breaker in the tripped state of the utility model;

[0030] Figure 6 It is a three-dimensional diagram of the circuit breaker of the utility model in the re-locking state;

[0031] Figure 7 This is a view of the circuit breaker of the utility model in the re-fastened state;

[0032] Figure 8 It is a structural schematic diagram of the reset rod of the utility model;

[0033] Fig. 9 It is a structural schematic diagram of the magnetic flux release of the utility model;

[0034] Fig.10 It is a schematic diagram of the magnetic flux release of the utility model without the release housing from one perspective;

[0035] Fig.11 It is a schematic diagram of the magnetic flux release of the utility model from another perspective without the release housing;

[0036] Fig.12 It is an exploded view of the housing of the release device of the utility model;

[0037] Fig.13 This utility model Figure 4 A magnified view of the local structure in

[0038] Fig.14 It is a structural schematic diagram of the rocker arm of the utility model.

[0039] Operating mechanism 1; bracket 11; rocker arm 12; driving surface 121; traction rod 13; flux release 2; push rod 21; push rod body 210; actuated surface 211; release arm 212; accommodating groove 213; through hole 214; limiting groove 215; moving iron core 22; limiting portion 221; second elastic member 23; fixed yoke 24; coil skeleton 25; pin 251; coil 26; third elastic member 27; cover 28; positioning groove 281; positioning flange 282; clamping hole 283; upper cover 29; first clamping buckle 291; positioning protrusion 292; positioning notch 293; second clamping buckle 294; reset rod 3; mounting arm 31; connecting arm 32; actuated arm 33; first reset arm 34; second reset arm 35; first extension arm 36; second extension arm 37; third extension arm 38; first elastic member 4. DETAILED DESCRIPTION

[0040] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the release reset structure and circuit breaker of the present utility model. The release reset structure and circuit breaker of the present utility model are not limited to the description of the following embodiments.

[0041] like Figure 1As shown, the circuit breaker of this embodiment includes an operating mechanism 1, a contact system, a conductive system and a protection module. The contact system has an off state for disconnecting the conductive system and an on state for conducting the conductive system, and the contact system includes a moving contact and a static contact. The operating mechanism 1 cooperates with the contact system, and the operating mechanism 1 is connected to the moving contact of the contact system, driving the moving contact to swing and contact and separate with the static contact to perform closing and opening operations. The operating mechanism 1 generally includes a bracket 11, a handle, a rocker arm 12, a traction rod 13, an energy storage spring, a connecting rod, a crank, a lock and a tripping buckle connected with a buckle. The protection module is used to protect the conductive system. When a fault is detected in the main circuit where the contact system and the conductive system are located, the traction rod 13 is driven to trip the operating mechanism 1, driving the moving contact to separate from the static contact to achieve circuit protection. The protection module can achieve overload, short circuit, leakage and / or overvoltage protection. In this embodiment, the protection module includes a flux release 2, and the flux release 2 switches between a first operating state and a second operating state based on the electrical parameters of the conductive system. It should be noted that the structure and operating principle of the operating mechanism 1 are based on the prior art, and generally include a bracket 11, a handle, a rocker arm 12, an energy storage spring, a connecting rod, a crank, a lock and a jumper connected by a buckle. The handle is connected to the rocker arm 12, and the rocker arm 12 is rotatably mounted on the bracket 11. The jumper, lock and traction rod 13 are rotatably arranged on the bracket 11 respectively. The lock is hasp-connected with the jumper, and the traction rod 13 is limitedly connected to the lock. The crank is rotatably mounted on the jumper through a crank shaft. One end of the connecting rod is rotatably connected to the crank through a spring shaft, and the other end is directly or indirectly connected to the moving contact for driving the moving contact to rotate. One end of the energy storage spring is connected to the rocker arm 12, and the other end is connected to the spring shaft at the connection between the connecting rod and the crank. The rocker arm 12, crank, lock, trip, connecting rod and energy storage spring constitute the connecting rod structure of the operating mechanism. The lock and trip connected by the buckle limit the rotation position of the crank so that the crank can rotate with the trip as the rotation center. The rocker arm 12 is driven to swing by the handle, and the rocker arm 12 drives the crank and the connecting rod to rotate, and then the connecting rod drives the moving contact to rotate, so as to realize the closing and opening of the circuit breaker. In the closed state of the circuit breaker, when a circuit fault occurs, the protection module pushes the traction rod 13 to release the limit fit between the traction rod 13 and the lock, so that the lock and the trip are released from the buckle, so that the operating mechanism drives the moving contact to separate from the static contact, so as to realize the tripping and opening of the circuit breaker. After the operating mechanism is tripped, the handle needs to be moved to the opening position to drive the operating mechanism 1 to perform a re-buckle operation, so that the lock and the trip of the operating mechanism are re-buckled, and the traction rod 13 and the lock are re-limited, so that the closing operation can be performed again. During the re-locking process of the circuit breaker, the handle drives the rocker arm 12 to flip toward the traction rod 13, the rocker arm 12 pushes the trip buckle, the trip buckle presses against the lock buckle to make the lock buckle flip toward the jump buckle until it is re-locked and connected with the jump buckle, the traction rod 13 comes out of the lock buckle hole and presses against the lock buckle to form a re-locking state.

[0042] like Figure 1-Figure 7 As shown, the release reset structure of the circuit breaker of this embodiment includes a reset rod 3 for resetting the magnetic flux release 2, and the reset rod 3 is rotatably arranged to switch between a first position and a second position, with the axial direction of the reset rod 3 as the first direction (i.e. Figure 3 The front-to-back direction in the figure is perpendicular to the paper surface), and the moving direction of the push rod 21 of the flux release 2 is the second direction (i.e. Figure 3 The first direction, the second direction and the third direction are perpendicular to each other, and the third direction is Figure 3 In the up-down direction in the figure, the operating mechanism 1 and the flux release 2 are arranged in a first direction, and the reset rod 3 is located on the same side of the operating mechanism 1 and the flux release 2 in the second direction. When the circuit breaker is closed, the flux release 2 is in the first operating state; when the flux release 2 is switched to the second operating state, the push rod 21 drives the operating mechanism 1 to trip, so that the operating mechanism drives the moving contact to separate from the static contact, and the tripping is realized; after the operating mechanism 1 is tripped, the handle needs to be moved in the direction of the opening position to drive the operating mechanism 1 to perform a re-locking operation, so that the lock buckle and the jump buckle of the operating mechanism can be re-locked and matched, and the closing operation can be performed again; in the re-locking process of the operating mechanism 1 in this embodiment, the operating mechanism 1 also drives the reset rod 3 to rotate to the second position, and the reset rod 3 drives the push rod 21 at the same time, so that the flux release 2 is reset to the first operating state. In the release reset structure and circuit breaker of this embodiment, the reset rod 3 is rotatably arranged on the same side of the parallel operating mechanism 1 and the flux release 2, which is conducive to simplifying the action relationship between the reset rod 3 and the operating mechanism 1 and the flux release 2, and the action coordination is stable and reliable, and the layout is compact and reasonable.

[0043] Furthermore, the release reset structure of this embodiment further includes a first elastic member 4 for resetting the reset rod 3; when the circuit breaker is tripped again, the rocker arm 12 of the operating mechanism 1 drives the reset rod 3 to store energy in the first elastic member 4; when the circuit breaker is closed, the first elastic member 4 releases energy to reset the reset rod 3 to the first position. The first elastic member 4 is preferably a torsion spring, and may also be an elastic member such as a compression spring or a spring.

[0044] like Figure 2 and Figure 3 As shown, when the circuit breaker is in the closed state, the traction rod 13 is separated from the push rod 21, and the reset rod 3 is separated from the push rod 21 by the force of the first elastic member 4; when there is leakage current or short circuit or overload current, the intelligent control transmits a signal to the flux release 2, so that the flux release 2 is switched to the second operating state, and the push rod 21 of the flux release 2 moves toward the traction rod 13, and drives the traction rod 13 to flip clockwise, so that the lock and trip of the operating mechanism 1 are released to achieve the purpose of disconnecting the circuit breaker, as shown in FIG. Figure 4 and Figure 5 As shown, the circuit breaker is in the tripped state and cannot be closed.

[0045] like Figure 6 and Figure 7 As shown, when the circuit breaker is locked again, the handle moves toward the opening position so that the lock catch and the trip catch are locked together again. In this embodiment, the rocker arm 12 of the operating mechanism also presses the reset rod 3 to flip clockwise, so that it moves toward the push rod 21 of the flux release 2 and abuts against the push rod 21, so as to push the push rod 21 to reset the flux release 2 to reset the flux release 2 to the first operating state. At this time, the push rod 21 moves in the direction away from the traction rod 13, and at the same time, the traction rod 13 flips counterclockwise and abuts against the lock catch to achieve the purpose of locking again. At this time, the circuit breaker can be closed.

[0046] like Figure 8 As shown, the structure of the reset rod 3 in this embodiment, the reset rod 3 includes a reset rod body, and the reset rod body respectively extends an actuated arm 33 drivingly cooperated with the rocker arm 12 of the operating mechanism 1 and a reset arm drivingly cooperated with the actuated surface 211 of the push rod 21. During the re-engaging process of the operating mechanism 1, the rocker arm 12 drives the actuated arm 33 of the reset rod 3, driving the reset rod 3 to rotate, so that the reset arm of the reset rod 3 drives the push rod 21 to reset the flux release 2 to the first operating state. Specifically, the reset rod body includes two mounting arms 31 rotatably mounted on the two outer sides of the bracket 11, and a connecting arm 32 arranged across the bracket 11 of the operating mechanism and connected between the two mounting arms 31. As shown Figure 2 When the reset lever 3 is in the first position, the length direction of the mounting arm 31 is along the third direction and the width direction is along the second direction, the length direction of the connecting arm 32 is along the first direction and the width is along the second direction, and the width of the mounting arm 31 is greater than the width of the connecting arm 32. In this embodiment, the reset lever 3 is coaxially arranged with the traction rod 13, and the rotation axis of the traction rod 13 is shared. The mounting arm 31 is provided with a rotation hole that is rotatably matched with the rotation axis of the traction rod 13.

[0047] like Figure 2-Figure 7 As shown, in the driving structure between the reset rod 3 and the push rod 21 in this embodiment, the actuated surface 211 is a plane perpendicular to the second direction, and the reset arm includes a first reset arm 34 and a second reset arm 35 connected to each other, and the second reset arm 35 is inclined in a direction away from the actuated surface 211. Figure 2 and Figure 3 As shown, when the reset rod 3 is in the first position, the first reset arm 34 is arranged parallel to the actuated surface 211 and spaced apart; Figure 4 and Figure 5 As shown, during the tripping process of the operating mechanism 1, the actuated surface 211 of the push rod 21 moves toward the first reset arm 34 until it contacts the first reset arm 34; Figure 6 and Figure 7As shown, when the reset rod 3 rotates to the second position, the second reset arm 35 abuts against the actuated surface 211. The first reset arm 34 and the second reset arm 35 are straight structures, and the cooperation with the actuated surface 211 of the planar structure makes the driving between the reset rod 3 and the push rod 21 more stable and reliable, and the structure is simple and easy to manufacture. Of course, as other embodiments, the reset arm can also be an arc structure.

[0048] Specifically, the reset lever body is arranged opposite to the rocker arm 12 in the second direction and is staggered with the push rod 21. The reset lever body extends toward the actuated surface 211 to form an extension arm connected to the first reset arm 34. The extension arm is a bent structure, including a first extension arm 36, a second extension arm 37 and a third extension arm 38 that are vertically connected in sequence, wherein the first extension arm 36 is vertically connected to a mounting arm 31 of the reset lever body, and the third extension arm 38 is vertically connected to the first reset arm 34; Figure 3 As shown, when the reset lever 3 is in the first position, the length direction of the first extension arm 36 is arranged along the first direction and the width direction is arranged along the third direction, the length direction of the second extension arm 37 is arranged along the third direction and the width direction is arranged along the first direction, and the length direction of the third extension arm 38 is arranged along the second direction and the width direction is arranged along the first direction. In this embodiment, the first elastic member 4 is a torsion spring, which is sleeved on the rotating shaft of the traction rod 13, one end of which is connected to the bracket 11, and the other end abuts against the first extension arm 36.

[0049] In the driving matching structure between the rocker arm 12 and the reset rod 3 of this embodiment, the rocker arm 12 and the reset rod body are respectively rotatably arranged on the bracket 11 of the operating mechanism 1, and the rocker arm 12 and the reset rod body are arranged opposite to each other in the second direction, the reset rod body extends toward the rocker arm 12 to form the driven arm 33, the traction rod 13 is also rotatably arranged on the bracket 11, and the reset rod 3 is coaxially arranged with the traction rod 13, and shares the rotating shaft of the traction rod 13. Further, as Fig.13 As shown, the same side of the mounting arm 31 close to the magnetic flux release 2 of the two mounting arms 31 of the reset lever body extends in different directions to form a passive arm 33 and a first extension arm 36. Fig.14 As shown, the rocker arm 12 is a U-shaped structure having two arms rotatably mounted on the bracket 11, wherein a driving surface 121 is provided on the side of one of the arms for driving and cooperating with the driven arm 33. Figure 3As shown, when the reset rod 3 is in the first position, the length of the driven arm 33 is arranged along the second direction and the width direction is arranged along the third direction, and the driving surface 121 of the rocker arm 12 is arranged obliquely relative to the third direction. In order to improve the reliability of the driving cooperation between the rocker arm 12 and the reset rod 3, the rocker arm 12 and the reset rod 3 can increase the contact area between the two by various means when they cooperate. For example, the thickness of the rocker arm 12 is increased, and / or the thickness of the driven arm 33 of the reset rod 3 is increased; or the structure of the driven arm 33 of the reset rod 3 used to abut against the rocker arm 12 is changed to a horizontal arrangement to increase the contact area. In this embodiment, the driving between the rocker arm 12 and the reset rod 3 is achieved by the driving cooperation between the driving surface 121 on one arm of the rocker arm 12 and an driven arm 33 of the reset rod 3. Of course, as other embodiments, a driving surface 121 may be provided on each of the two arms of the rocker arm 12. Accordingly, the two mounting arms 31 of the reset lever body each extend to form a driven arm 33. The driving between the rocker arm 12 and the reset lever 3 is achieved through the cooperation between the two driving surfaces 121 on the two arms of the rocker arm 12 and the two driven arms 33 of the reset lever 3.

[0050] like Figure 9-11 As shown, the structure of the flux release 2 in this embodiment, the flux release 2 includes a release housing and a push rod 21 movably arranged in the release housing and used to drive the traction rod 13 of the operating mechanism 1, the release housing is provided with a through hole, the reset arm of the reset rod 3 extends into the release housing through the through hole to drive and cooperate with the driven surface 211, the push rod 21 extends a release arm 212 extending from the through hole, which is used to drive the traction rod 13 of the operating mechanism 1 to trip the operating mechanism 1. The flux release 2 also includes a fixed yoke 24, a coil frame 25 installed on the fixed yoke 24, a coil 26 sleeved on the coil frame 25, a static iron core installed in the coil frame 25, a moving iron core 22 movably arranged in the coil frame 25 and arranged opposite to the static iron core, a second elastic member 23 connected between the push rod 21 and the fixed yoke 24, and a third elastic member 27 connected between the push rod 21 and the moving iron core 22. The push rod 2 can switch between a third position and a fourth position. When the push rod 21 is in the fourth position, it drives the traction rod 13 to trip the operating mechanism 1.

[0051] Specifically, the push rod 21 includes a cylindrical push rod body 210, a radial surface on one side of the push rod body 210 is a driven surface 211 drivingly matched with the reset rod 3, the driven surface 211 extends toward the traction rod 13 to form a release arm 212, the push rod body 210 is provided with a receiving groove 213 located on the other side and a through hole 214 axially penetrating the push rod body 210, one end of the second elastic member 23 abuts against the receiving groove 213, and the other end abuts against the fixed yoke 24; one end of the moving iron core 22 extends into the receiving groove 213, and is provided with a limiting portion 221, the limiting portion 221 passes through the through hole 214 and is disposed in a limiting groove 215 on the driven surface 211, and the limiting groove 215 and the through hole 214 are arranged in a cross shape. The release arm 212 is L-shaped, one end of which is connected to the driven surface 211 and arranged along the third direction, and the other end of which is arranged along the second direction.

[0052] It is worth mentioning that the coil skeleton 25 is provided with a pin 251, and the pin 251 extends out of the release housing and is electrically connected to the control board to realize the electrical connection between the flux release 2 and the control board. The control board is used to collect the electrical parameters of the conductive system and detect whether there are faults such as overload, short circuit, undervoltage, and overvoltage. Based on the electrical parameters, the control board controls the flux release 2 to switch between the first operating state and the second operating state; wherein, when the flux release 2 is in the first operating state, the circuit breaker is in the re-locking state; when the flux release 2 is in the second operating state, the traction rod 13 is driven to make the circuit breaker enter the tripping state. In this embodiment, the flux release 2 realizes the leakage action and intelligent tripping function, which is realized by the functional conversion of the control board and chip of the control component. The technology of the control component detecting circuit faults and intelligently controlling the transmission of signals to the flux release 2 to switch the operating state of the flux release 2 is a prior art and will not be repeated here.

[0053] In this embodiment, the static iron core is a permanent magnet. When the magnetic flux release 2 is in the first operating state, the moving iron core 22 is attracted to the static iron core backward, so that the limiting part 221 is limited in the limiting groove 215 so that the push rod 21 is limited to cooperate with the moving iron core 22 in the third position, so that the second elastic member 23 stores energy; when the magnetic flux release 2 is in the second operating state, the electromagnetic field generated by the energization of the coil 25 offsets the magnetic field of the static iron core so that the moving iron core 22 is repelled forward from the static iron core, so that the limiting part 221 is disengaged from the limiting groove 215, the moving iron core 22 and the push rod 21 are released, and the second elastic member 23 releases energy to drive the push rod 21 to switch to the fourth position. It should be noted that the working principle of the magnetic flux release 2 is the existing technology. Of course, as other embodiments, the static iron core may not be a permanent magnet, and the flux release 2 is energized to enter the first operating state, and the electromagnetic field generated by the coil 25 being energized causes the moving iron core 22 to be attracted to the static iron core; the flux release 2 is not energized to enter the second operating state, and the moving iron core 22 is repelled from the static iron core.

[0054] In this embodiment, the second elastic member 23 and the third elastic member 27 are a large and a small spring. The slightly larger second elastic member 23 acts on the push rod 21 to move the push rod 21; the slightly smaller third elastic member 27 increases the overtravel margin for the moving iron core 22. The reset rod 23 acts on the push rod 21 to attract the moving iron core 22 and the static iron core. When the reset rod 23 continues to act after attraction, the third elastic member 27 begins to be stressed and plays a buffering role.

[0055] like Fig. 9 and Fig.12 As shown, the structure of the release housing in this embodiment, the release housing includes a cover shell 28 and an upper cover 29 that cover each other, an opening is provided on one side of the release housing, and the upper cover 29 is provided with a first buckle 291 protruding downward, the first buckle 291 buckles the cover shell 28 and covers a part of the opening, and the other part of the opening is the through hole; and / or, a positioning protrusion 292 protruding downward is provided on the lower side of the upper cover 29, and a positioning groove 281 cooperating with the positioning protrusion 292 is provided on the upper side of the cover shell 28; and / or, a positioning flange 282 protruding upward is provided on the upper side of the cover shell 28, a clamping hole 283 is provided on the positioning flange 282, and a positioning notch 293 cooperating with the positioning flange 282 is provided on the upper cover 29, and a second buckle 294 cooperating with the clamping hole 283 is provided in the positioning notch 293. The release housing has a simple structure, is easy to install and is firm.

[0056] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0057] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A release reset structure, comprising an operating mechanism (1), a magnetic flux release (2) for driving the operating mechanism (1) to trip, and a reset rod (3) for resetting the magnetic flux release (2), characterized in that: The reset rod (3) is rotatably arranged and can switch between a first position and a second position. The axial direction of the reset rod (3) is the first direction. The magnetic flux release (2) comprises a push rod (21) for driving the operating mechanism (1) to release. The moving direction of the push rod (21) of the magnetic flux release (2) is the second direction. The first direction, the second direction and the third direction are perpendicular to each other. The operating mechanism (1) and the magnetic flux release (2) are arranged in an array along the first direction. The reset rod (3) is located on the same side of the operating mechanism (1) and the magnetic flux release (2) in the second direction. When the circuit breaker is closed, the magnetic flux release (2) is in a first operating state. When the magnetic flux release (2) is switched to the second operating state, the push rod (21) drives the operating mechanism (1) to release. During the re-release process of the operating mechanism (1), the operating mechanism (1) drives the reset rod (3) to rotate to the second position. At the same time, the reset rod (3) drives the push rod (21) to reset the magnetic flux release (2) to the first operating state.

2. The release reset structure according to claim 1, characterized in that: The reset rod (3) comprises a reset rod body, from which extend respectively a driven arm (33) drivingly matched with a rocker arm (12) of an operating mechanism (1) and a reset arm drivingly matched with a driven surface (211) of a push rod (21).

3. The release reset structure according to claim 2, characterized in that: The actuated surface (211) is a plane perpendicular to the second direction; the reset arm comprises a first reset arm (34) and a second reset arm (35) connected to each other; the second reset arm (35) is arranged obliquely in a direction away from the actuated surface (211); when the reset rod (3) is in the first position, the first reset arm (34) and the actuated surface (211) are arranged in parallel and spaced apart; during the tripping process of the operating mechanism (1), the actuated surface (211) of the push rod (21) moves toward the first reset arm (34) until it contacts the first reset arm (34); when the reset rod (3) rotates to the second position, the second reset arm (35) contacts the actuated surface (211).

4. The release reset structure according to claim 3, characterized in that: The reset rod body is arranged opposite to the rocker arm (12) in the second direction and is staggered with the push rod (21). The reset rod body extends toward the actuated surface (211) to form an extension arm connected to the first reset arm (34).

5. The release reset structure according to claim 4, characterized in that: The extension arm comprises a first extension arm (36), a second extension arm (37) and a third extension arm (38) which are vertically connected in sequence, wherein the first extension arm (36) is connected to the reset lever body, and the third extension arm (38) is vertically connected to the first reset arm (34); when the reset lever (3) is in the first position, the length direction of the first extension arm (36) is arranged along the first direction and the width direction is arranged along the third direction, the length direction of the second extension arm (37) is arranged along the third direction and the width direction is arranged along the first direction, and the length direction of the third extension arm (38) is arranged along the second direction and the width direction is arranged along the first direction.

6. The release reset structure according to claim 2, characterized in that: The rocker arm (12) and the reset lever body are rotatably arranged on a bracket (11) of the operating mechanism (1), and the rocker arm (12) and the reset lever body are arranged opposite to each other in a second direction. The reset lever body extends toward the rocker arm (12) to form the passive arm (33). The rocker arm (12) is provided with a driving surface (121) that cooperates with the passive arm (33).

7. The release reset structure according to claim 6, characterized in that: When the reset rod (3) is in the first position, the length of the actuated arm (33) is arranged along the second direction and the width direction is arranged along the third direction, and the driving surface (121) of the rocker arm (12) is arranged to be inclined relative to the third direction.

8. The release reset structure according to claim 6, characterized in that: The reset rod body comprises two mounting arms (31) which are respectively rotatably mounted on two outer sides of the bracket (11) and a connecting arm (32) which is arranged across the bracket (11) and connected between the two mounting arms (31).

9. The release reset structure according to claim 1, characterized in that: It also comprises a first elastic member (4) for resetting the reset rod (3); when the circuit breaker is closed again, the rocker arm (12) drives the reset rod (3) to store energy in the first elastic member (4); when the circuit breaker is closed, the first elastic member (4) releases energy to reset the reset rod (3) to the first position.

10. The release reset structure according to claim 2, characterized in that: The magnetic flux release (2) comprises a release housing and a push rod (21) movably arranged in the release housing, the release housing being provided with a through hole, the reset arm of the reset rod (3) extending into the release housing through the through hole to drive and cooperate with the driven surface (211), the push rod (21) extending out of the through hole to form a release arm (212) for driving a traction rod (13) of an operating mechanism (1) to release the operating mechanism (1).

11. The release reset structure according to claim 10, characterized in that: The release housing comprises a cover shell (28) and an upper cover (29) which cover each other, an opening is provided on one side of the release housing, and the upper cover (29) is provided with a first buckle (291) protruding downward, the first buckle (291) buckles the cover shell (28) and covers a part of the opening, and the other part of the opening is the through hole; And / or, a positioning protrusion (292) protruding downward is provided on the lower side of the upper cover (29), and a positioning groove (281) cooperating with the positioning protrusion (292) is provided on the upper side of the cover shell (28); And / or, the upper side of the cover shell (28) is provided with an upwardly protruding positioning flange (282), the positioning flange (282) is provided with a clamping hole (283), the upper cover (29) is provided with a positioning notch (293) that cooperates with the positioning flange (282), and the positioning notch (293) is provided with a second buckle (294) that cooperates with the clamping hole (283).

12. The release reset structure according to claim 1 or 10, characterized in that: The magnetic flux release (2) comprises a fixed magnetic yoke (24), a coil frame (25) mounted on the fixed magnetic yoke (24), a coil (26) sleeved on the coil frame (25), a static iron core mounted in the coil frame (25), a movable iron core (22) movably arranged in the coil frame (25) and arranged opposite to the static iron core, a push rod (21) for driving a traction rod (13) of an operating mechanism (1), and a second elastic member (23); the push rod (21) is movably arranged and can be switched between a third position and a fourth position; when the push rod (21) is in the fourth position, it drives the traction rod (13) to release the operating mechanism (1); When the magnetic flux release (2) is in a first operating state, the push rod (21) is limitedly matched with the moving iron core (22) in a third position, so that the second elastic member (23) stores energy; when the magnetic flux release (2) is in a second operating state, the moving iron core (22) and the push rod (21) are released from the limit, and the second elastic member (23) releases energy to drive the push rod (21) to switch to a fourth position.

13. The release reset structure according to claim 12, characterized in that: The push rod (21) comprises a cylindrical push rod body (210), a radial surface on one side of the push rod body (210) being a driven surface (211) drivingly matched with the reset rod (3), the driven surface (211) extending toward the traction rod (13) to form a tripping arm (212), the push rod body (210) being provided with a receiving groove (213) located on the other side and a through hole (214) axially penetrating the push rod body (210), One end of the second elastic member (23) abuts against the accommodating groove (213), and the other end abuts against the fixed yoke (24); one end of the moving iron core (22) extends into the accommodating groove (213), and is provided with a limiting portion (221); the limiting portion (221) passes through the through hole (214) and is placed in the limiting groove (215) on the driven surface (211); the limiting groove (215) and the through hole (214) are arranged in a cross shape.

14. The release reset structure according to claim 1, characterized in that: The operating mechanism (1) comprises a bracket (11), a handle, a rocker arm (12), an energy storage spring, a connecting rod, a crank, a lock buckle and a trip buckle connected by a buckle, the handle is connected to the rocker arm (12), the rocker arm (12) is rotatably mounted on the bracket (11), the trip buckle, the lock buckle and the traction rod (13) are respectively rotatably mounted on the bracket (11), the lock buckle is hasp-connected to the trip buckle, the traction rod (13) is limitedly connected to the lock buckle, the crank is rotatably mounted on the trip buckle via a crank shaft, one end of the connecting rod is rotatably connected to the crank via a spring shaft, and the other end is connected to a moving contact for driving the moving contact to rotate, one end of the energy storage spring is connected to the rocker arm (12), and the other end is connected to a spring shaft at the connection between the connecting rod and the crank; the reset rod (3) is rotatably arranged coaxially with the traction rod (13).

15. A circuit breaker, characterized in that: It comprises the release resetting structure as described in any one of claims 1-14.

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