Circuit breaker

Abstract

A circuit breaker comprises a housing, and a hand-operating mechanism, an electric mechanism, an operating mechanism, a moving contact and a static contact which are arranged in the housing, and the hand-operating mechanism and the electric mechanism can respectively drive the moving contact and the static contact to contact and separate through the operating mechanism. The electric mechanism comprises a triggering piece arranged in a rotating mode and a motor used for driving the triggering piece to rotate, a tripping piece is arranged between the triggering piece and the operating mechanism, the triggering piece is provided with an opening driving part, the motor can drive the triggering piece to rotate, and the opening driving part drives the tripping piece to trigger the operating mechanism to trip. The operating mechanism drives the moving contact to be separated from the static contact, an electric mechanism does not need to drive the circuit breaker to be opened through a manual mechanism, and the problem that when the manual mechanism is locked due to abnormal conditions, the electric mechanism cannot drive the circuit breaker to be opened through the manual mechanism can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus field, concretely relates to a circuit breaker. BACKGROUND

[0002] The existing circuit breaker button or handle component is pressed and locked under abnormal condition, or if there is a remote sending automatic tripping signal when being in the locked position, the button or handle component is still in the locked position, so the tripping instruction cannot be executed, and the moving contact and the static contact cannot be separated; only when the line is faulty, the operating mechanism can be tripped to drive the moving contact and the static contact to separate. This phenomenon exists circuit breaker instruction non-execution and line safety hidden danger. SUMMARY

[0003] The utility model discloses a circuit breaker which overcomes at least one defect of the prior art.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A circuit breaker, comprising a shell, a manual mechanism, an electric mechanism, an operating mechanism, a moving contact and a static contact arranged in the shell, the manual mechanism and the electric mechanism can drive the moving contact and the static contact to contact and separate respectively through the operating mechanism, the electric mechanism comprises a trigger arranged rotatably and a motor for driving the trigger to rotate, a trip member is arranged between the trigger and the operating mechanism, the trigger is provided with a tripping driving part, the motor can drive the trigger to rotate, the tripping driving part drives the trip member to trigger the operating mechanism to trip, and the operating mechanism drives the moving contact and the static contact to separate.

[0006] Preferably, the trigger is further provided with a closing driving part, the tripping driving part and the closing driving part are arranged in a staggered manner along the rotation direction of the trigger, the trigger can rotate between a first position and a second position, when the trigger rotates from the first position to the second position, the closing driving part pushes the manual mechanism or the operating mechanism, the operating mechanism drives the moving contact and the static contact to contact, when the trigger rotates from the second position to the first position, the tripping driving part drives the trip member to trigger the operating mechanism to trip, and the operating mechanism drives the moving contact and the static contact to separate.

[0007] Preferably, the electric mechanism further comprises a first microswitch, a second microswitch, a first closing circuit, a first tripping circuit, a second closing circuit and a second tripping circuit, the trigger is used for triggering the first microswitch, the operating mechanism is used for triggering the second microswitch, after electric closing or manual closing, the first tripping circuit and / or the second tripping circuit are turned on to provide tripping current for the motor, and after electric tripping or manual tripping, the first closing circuit and / or the second closing circuit are turned on to provide closing current for the motor.

[0008] Preferably, the trigger is arranged to press the first micro switch in the second position to turn on the first opening circuit and turn off the first closing circuit, and the trigger is arranged to be away from the first micro switch in the first position to turn off the first opening circuit and turn on the first closing circuit.

[0009] Preferably, the operating mechanism comprises a rotatingly arranged contact support, and the movable contact is arranged on the contact support, and the contact support is arranged to trigger the second micro switch.

[0010] Preferably, the contact support is arranged to press the second micro switch in the opening position to turn on the second closing circuit and turn off the second opening circuit, and the contact support is arranged to be away from the second micro switch in the closing position to turn off the second closing circuit and turn on the second opening circuit.

[0011] Preferably, the operating mechanism comprises a rotatingly arranged locking member and a rotatingly arranged tripping member, and the contact support is connected with the energy storage spring, and the movable contact is arranged on the contact support, and the locking member and the tripping member are snap-fitted, and the tripping member is arranged to push the locking member to release the snap-fitting of the locking member and the tripping member to trip the operating mechanism.

[0012] Preferably, the contact support comprises a contact rotating part rotatingly arranged on the housing and a tripping support part connected with the contact support, and the tripping member is rotatingly arranged on the tripping support part, and the tripping support part is provided with a protruding second trigger part on the side away from the tripping member, and the second trigger part is arranged to trigger the second micro switch.

[0013] Preferably, the trigger is provided with a first trigger part, and the first trigger part and the opening driving part are arranged on two opposite sides of the trigger, and the first trigger part is arranged to trigger the first micro switch.

[0014] Preferably, the housing is provided with a first circuit board and a second circuit board stacked, and the first circuit board is electrically connected with the second circuit board, and the first circuit board is provided with a signal connector, and the first micro switch and the second micro switch are arranged on the second circuit board.

[0015] Preferably, the opening driving part and the closing driving part are arranged on two sides of the rotation axis of the trigger.

[0016] Preferably, the tripping member comprises a tripping rotating part rotatingly arranged, and a first tripping part and a second tripping part connected with the tripping rotating part, respectively, and the first tripping part and the second tripping part are arranged to rotate around the axis of the tripping rotating part, respectively, and the trigger is arranged to push the first tripping part to drive the tripping member to rotate, and the tripping member is arranged to drive the second tripping part to trigger the operating mechanism to trip.

[0017] Preferably, the tripping member is connected with a tripping spring, the tripping spring is used to drive the first tripping part to rotate towards the trigger, so that the first tripping part is located in the rotation path of the opening driving part, and the second tripping part is away from the operating mechanism.

[0018] Preferably, the tripping spring is a torsion spring, the tripping spring comprises a cylindrical spiral part, and spring rods respectively arranged at two ends of the spiral part, a fixed shaft is arranged in the shell, the spiral part and the tripping rotating part are respectively arranged on the fixed shaft, the two spring rods are respectively connected with the first tripping part and the shell, a limiting structure for limiting the tripping member is arranged in the shell, the tripping spring is used to drive the first tripping part to rotate towards the trigger until the tripping member is limited by the limiting structure, and the trigger can push the tripping member to rotate to trigger the operating mechanism to trip against the action of the tripping spring.

[0019] Preferably, the tripping member comprises a sliding part arranged in a straight line, and a third tripping part and a fourth tripping part respectively arranged at two ends of the sliding part along the moving direction of the sliding part, the third tripping part is provided with a rack, the trigger is provided with an opening driving tooth engaged with the rack, the opening driving tooth is used as an opening driving part to push the rack, so that the third tripping part drives the tripping member to move in a straight line, and the fourth tripping part is driven by the tripping member to trigger the operating mechanism to trip.

[0020] Preferably, the tripping member comprises a guide part arranged on the side surface of the sliding part, the shell is provided with a guide groove for inserting the guide part, the guide part is in sliding fit with the guide groove, and a tripping spring connected with the guide part is arranged in the guide groove, the tripping spring is used to drive the third tripping part to be located in the rotation path of the opening driving part, and the fourth tripping part is away from the operating mechanism.

[0021] Preferably, the fourth tripping part is respectively provided with a guide surface and a stop block on two sides perpendicular to the moving direction of the sliding part, the guide surface is arranged obliquely to the moving direction of the sliding part, and is used to push the operating mechanism to trip, a limiting block is arranged in the shell, and the stop block is in contact with the limiting block under the action of the tripping spring.

[0022] Preferably, a transmission part is arranged between the locking member and the tripping member, the transmission part is arranged on the locking member, the tripping member is used to push the transmission part arranged on the locking member, so that the locking member is separated from the tripping member; or the transmission part is arranged on the tripping member, the tripping member drives the transmission part to push the locking member, so that the locking member is separated from the tripping member.

[0023] Preferably, the tripping rotating part is in a cylindrical structure, the first tripping part and the second tripping part are arranged at two ends of the tripping rotating part along the axis of the tripping rotating part, the first tripping part is in the same plane as the opening driving part, the second tripping part is arranged on the side of the locking part, the second tripping part comprises a first tripping section and a second tripping section arranged obliquely, the first tripping section is connected between the second tripping section and the tripping rotating part, a positioning groove is formed between the first tripping section and the second tripping section, the positioning groove is used for limiting the transmission part, and the second tripping section is used for pushing the transmission part arranged on the locking part to separate the locking part from the tripping part.

[0024] Preferably, the locking part has a locking rotating part, a locking short-circuit part, a locking overload part and a locking locking part connected with the locking rotating part respectively, the locking locking part is used for limiting the tripping part, the locking short-circuit part is matched with the short-circuit tripping device, the short-circuit tripping device can push the locking short-circuit part to separate the locking locking part from the tripping part, and the locking overload part is matched with the overload tripping device, the overload tripping device can pull the locking overload part to separate the locking locking part from the tripping part.

[0025] Preferably, the trigger part comprises a trigger gear, an opening rotating part and a closing rotating part arranged coaxially, the opening rotating part is provided with an opening boss protruding in the radial direction, the opening boss serves as the opening driving part and is used for driving the tripping part to trigger the operation mechanism to trip, the closing rotating part is provided with a closing driving tooth protruding in the radial direction, the closing driving tooth serves as the closing driving part and is used for driving the manual mechanism or the operation mechanism to close, and the closing driving tooth is an incomplete gear.

[0026] Preferably, the trigger gear, the opening rotating part and the closing rotating part are arranged in sequence in the axial direction, and the opening rotating part is arranged between the trigger gear and the closing rotating part.

[0027] Preferably, two output ends of the first micro switch are connected with a first closing circuit and a first opening circuit respectively, the motor can drive the first micro switch to switch between the two output ends, in the electric opening, the first micro switch is used for turning on the first closing circuit and turning off the first opening circuit, or in the electric closing, the first micro switch is used for turning off the first closing circuit and turning on the first opening circuit.

[0028] The two output ends of the second microswitch are connected with a second closing circuit and a second opening circuit respectively, the operating mechanism can drive the second microswitch C to switch between the two output ends, when the motor opening and the manual opening, the second microswitch C is used for connecting the second closing circuit and disconnecting the second opening circuit, the second closing circuit is used for providing the closing current for the motor, or when the motor closing and the manual closing, the second microswitch C is used for disconnecting the second closing circuit and connecting the second opening circuit, the second opening circuit is used for providing the closing current for the motor.

[0029] Preferably, the manual mechanism comprises a button and a rotating handle, the button is connected with the handle, a first connecting rod is arranged between the handle and the jump-off part, two ends of the first connecting rod are rotatably connected with the handle and the jump-off part respectively, a second connecting rod is arranged between the handle and the button, the handle is provided with a closing driven part matched with a closing driving part, the closing driving part drives the handle to rotate through the closing driven part, and the handle drives the moving contact to contact the static contact through the contact support to realize the closing.

[0030] The circuit breaker of the utility model, the trigger of the motor mechanism triggers the operating mechanism to trip through the trip part, the operating mechanism drives the circuit breaker to open, the motor mechanism does not need to drive the circuit breaker to open through the manual mechanism, when the manual mechanism is locked because of abnormal conditions, the motor mechanism cannot drive the circuit breaker to open through the manual mechanism.

[0031] In addition, the first closing circuit controlled by the motor and the second closing circuit controlled by the manual are connected in parallel to provide the closing current for the motor, and the first opening circuit controlled by the motor and the second opening circuit controlled by the manual are connected in parallel to provide the opening current for the motor, after the motor closing or the manual closing, the first opening circuit and / or the second opening circuit are connected to provide the opening current for the motor, and after the motor opening or the manual opening, the first closing circuit and / or the second closing circuit are connected to provide the closing current for the motor, without switching between the motor mode and the manual mode, realizing the constant residence of the motor mode and the manual mode. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the structural schematic diagram of the circuit breaker of the utility model;

[0033] Figure 2 It is the cooperation schematic diagram of the motor mechanism and the operating mechanism of the utility model;

[0034] Figure 3 It is the structural schematic diagram of the front of the trigger of the utility model;

[0035] Figure 4 It is the schematic diagram of the back of the trigger of the utility model;

[0036] Figure 5 is a structural schematic view of the first embodiment of the tripping piece of the utility model;

[0037] Figure 6 is a structural schematic view of the lock piece of the utility model;

[0038] Figure 7 is the first position of the trigger piece of the utility model;

[0039] Figure 8 is the position of the contact of the opening and closing drive part and the tripping piece of the utility model;

[0040] Figure 9 is the position of the tripping of the opening and closing drive part through the tripping piece trigger operating mechanism of the utility model;

[0041] Figure 10 is the second position of the trigger piece of the utility model;

[0042] Figure 11 is a structural schematic view of the first circuit board, the second circuit board, the first micro switch and the second micro switch of the utility model;

[0043] Figure 12 is a structural schematic view of the contact support of the utility model;

[0044] Figure 13 is a structural schematic view of the fixed shaft on the shell of the utility model;

[0045] Figure 14 is a schematic view of the control circuit of the utility model, at this time the circuit breaker is in the opening state, the first micro switch is connected to the first closing circuit, the second micro switch is connected to the second closing circuit, and the closing voltage signal is loaded between the first micro switch and the first closing circuit;

[0046] Figure 15 is a schematic view of the control circuit of the utility model, at this time the circuit breaker is in the closing state, the first micro switch is connected to the first opening circuit, the second micro switch is connected to the second opening circuit, and the opening voltage signal is loaded between the first micro switch and the first opening circuit;

[0047] Figure 16 is a schematic view of the control circuit of the utility model, at this time the circuit breaker has been switched to the opening state by the manual operation assembly, the first micro switch is connected to the first opening circuit, the second micro switch is connected to the second closing circuit, and the closing voltage signal is loaded between the first micro switch and the first closing circuit;

[0048] Figure 17Is the schematic diagram of the control circuit of the utility model, at this time has passed the manual operation assembly drive circuit breaker switch to the closed state, the first micro switch connects the first closed circuit, the second micro switch connects the second open circuit, the open voltage signal is loaded at the two ends of the first micro switch and the first open circuit;

[0049] Figure 18 Is the second embodiment of the utility model tripping piece, and the position of the tripping piece when closing;

[0050] Figure 19 Is the second embodiment of the utility model tripping piece, and the position of the tripping piece when opening;

[0051] Figure 20 Is the structure schematic diagram of the second embodiment of the utility model tripping piece shell;

[0052] Figure 21 Is the structure schematic diagram of the second embodiment of the utility model tripping piece open drive part;

[0053] Figure 22 Is the structure schematic diagram of the second embodiment of the utility model tripping piece;

[0054] In the figure:

[0055] 1 shell 43 lock piece

[0056] 2 manual mechanism 44 trip piece

[0057] 3 electric mechanism 311 open drive part

[0058] 4 operation mechanism 312 closed drive part

[0059] 5 moving contact 313 trigger gear

[0060] 6 static contact 314 open rotating part

[0061] 7 arc extinguishing mechanism 315 closed rotating part

[0062] 8 wiring mechanism 316 first trigger part

[0063] 9B first micro switch 331 tripping rotating part

[0064] 9C second micro switch 332 first tripping part

[0065] 11 fixed shaft 333 second tripping part

[0066] 12 overload release 334 tripping spring

[0067] 13 short-circuit release 335 first tripping section

[0068] 14 first circuit board 336 second tripping section

[0069] 15 second circuit board 337 sliding part

[0070] 16 signal connector 338 third tripping part

[0071] 21 button 339 fourth tripping part

[0072] 22 slider 411 contact rotating part

[0073] 23 handle member 412 tripping support part

[0074] 24 first connecting rod 414 second trigger part

[0075] 25 second connecting rod 431 lock rotating part

[0076] 31 trigger member 432 lock short-circuit part

[0077] 32 motor 433 lock overload part

[0078] 33 tripping member 434 lock locking part

[0079] 34 first gear 435 pull rod

[0080] 35 second gear 436 sliding groove

[0081] 36 third gear 437 transmission part

[0082] 41 contact support 3371 guide part

[0083] 3391 guide surface 3372 guide groove

[0084] 3392 stop block 3381 rack

[0085] 3393 limit block DETAILED DESCRIPTION

[0086] The specific embodiments of the circuit breaker of the present application are further illustrated in the following examples in conjunction with the accompanying drawings. The circuit breaker of the present application is not limited to the description of the following examples.

[0087] As Figure 1As shown, the circuit breaker of the embodiment includes a housing and a manual mechanism 2, an electric mechanism 3, an operating mechanism 4, a movable contact 5, a static contact 6, an arc extinguishing mechanism 7 and a wiring mechanism 8 arranged in the housing 1 in sequence along the length direction of the housing, the movable contact 5 and the static contact 6 are connected to a circuit through the wiring mechanism 8, the manual mechanism 2 can drive the operating mechanism 4 to act, the operating mechanism 4 drives the movable contact 5 to contact and separate from the static contact 6 to close and open the connected circuit, the operating mechanism 4 is provided with an overload release 12 on one side along the width direction of the housing 1, the arc extinguishing mechanism 7 is provided with a short-circuit release 13 on one side along the width direction of the housing 1, the overload release 12 can unlock the operating mechanism 4 when an overload current occurs, the short-circuit release 13 can also unlock the operating mechanism 4 when a short-circuit current occurs, so that the operating mechanism 4 drives the movable contact 5 to separate from the static contact 6 to realize the functions of overload protection and short-circuit protection.

[0088] The manual mechanism 2 in the embodiment includes a button 21, a slider 22 and a handle member 23, the circuit breaker is a plug-in circuit breaker, the manual mechanism 2 is arranged at one end along the length direction of the housing, the other end along the length direction of the housing is provided with the wiring mechanism 8, the wiring mechanism 8 is in plug-in connection mode and is used for connecting a power supply, the wiring mechanism 8 can also be arranged at the end where the manual mechanism 2 is arranged and is used for connecting a load. The button 21 drives the handle member 23 to rotate through the slider 22 when the button 21 moves, the handle member 23 drives the movable contact 5 to contact and separate from the static contact 6 through the operating mechanism 4 to realize closing and opening. The button 21 and the slider 22 are arranged in linear sliding mode, the handle member 23 is arranged in rotating mode, the handle member 23 is connected with the operating mechanism through a first connecting rod 24, the handle member 23 and the slider 22 are connected through a second connecting rod 25, and the slider 22 and the button 21 are connected through a third connecting rod. As other embodiments, the manual mechanism 2 can also not be provided with the slider 22, the manual mechanism 2 includes the button 21 and the handle member 23, and the button 21 and the handle member 23 can also be connected through the second connecting rod 25. The electric mechanism 3 includes a trigger 31 arranged in rotating mode and a motor 32 used for driving the trigger 31 to rotate, the trigger 31 in the prior art usually realizes automatic closing and opening through the driving button 21 or the slider 22 or the handle member 23, when the button 21 is pressed or the handle member 23 is in a locked position, the opening instruction cannot be executed.

[0089] As Figures 1-3, 7-10, one improvement of the embodiment is that the electric mechanism 3 comprises a trigger 31 arranged rotatably and a motor 32 for driving the trigger 31 to rotate, a tripping member 33 is arranged between the trigger 31 and the operating mechanism 4, the trigger 31 is provided with an opening driving part 311 and a closing driving part 312, the opening driving part 311 and the closing driving part 312 are arranged staggeredly along the rotating direction of the trigger 31, the motor 32 can drive the trigger 31 to rotate, and the opening driving part 311 drives the tripping member 33 to trip the operating mechanism 4. The trigger 31 can rotate between a first position and a second position, when the trigger 31 rotates from the first position to the second position, the closing driving part 312 pushes the manual mechanism 2 or the operating mechanism 4, and the operating mechanism 4 drives the movable contact 5 to contact the static contact 6, when the trigger 31 rotates from the second position to the first position, the opening driving part 311 drives the tripping member 33 to trip the operating mechanism 4, and the operating mechanism 4 drives the movable contact 5 to separate from the static contact 6. In the embodiment, the closing driving part 312 of the trigger 31 drives the operating mechanism to close through the driving handle part 23, and as other embodiments, the closing driving part 312 of the trigger 31 can directly or indirectly drive the button 21 or the slider 22, or drive the operating mechanism 4 to close.

[0090] The circuit breaker of the embodiment, the trigger 31 of the electric mechanism 3 trips the operating mechanism 4 through the tripping member 33, and the operating mechanism 4 drives the circuit breaker to open, and the electric mechanism 3 does not need to drive the circuit breaker to open through the manual mechanism 2, which can avoid the problem that the electric mechanism 3 cannot drive the circuit breaker to open through the manual mechanism 2 when the manual mechanism 2 is locked due to abnormal conditions. Figures 3-4 As shown in the figure, the trigger 31 of the embodiment comprises a trigger gear 313, an opening rotating part 314 and a closing rotating part 315 arranged coaxially, the trigger gear 313, the opening rotating part 314 and the closing rotating part 315 are arranged sequentially along the axial direction, the opening rotating part 314 is arranged between the trigger gear 313 and the closing rotating part 315, the motor 32 drives the opening driving part 311 and the closing driving part 312 to rotate through the trigger gear 313, the opening rotating part 314 is provided with an opening boss protruding along the radial direction, the opening boss serves as the opening driving part 311 for driving the tripping member 33 to trip the operating mechanism 4, the closing rotating part 315 is provided with a closing driving tooth protruding along the radial direction, the closing driving tooth serves as the closing driving part 312 for driving the operating mechanism 4 to close, and the closing driving tooth is an incomplete gear. In this way, the opening driving part 311 and the closing driving part 312 are located in different planes, which can avoid misoperation. Of course, as other embodiments, the opening rotating part 314 and the closing rotating part 315 can also be arranged on the two opposite sides of the trigger gear 313.

[0091] AsFigures 1-2 As shown, the electric mechanism 3 in this embodiment includes a first gear 34, a second gear 35, and a third gear 36. The axes of the trigger gear 313, the first gear 34, the second gear 35, and the third gear 36 are arranged parallel to the output shaft of the motor 32. The first gear 34 is connected to the motor 32. The motor 32 drives the second gear 35 to rotate through the first gear 34. The second gear 35 drives the third gear 36 to rotate. The third gear 36 drives the trigger gear 313 to rotate.

[0092] Of course, the motor 32 can also drive the trigger 31 to rotate in other ways. For example, the output shaft of the motor 32 is set perpendicular to the axis of the trigger gear 313, the motor 32 drives the trigger 31 to rotate through the worm and gear, and one or more gears are set between the electric mechanism 3 and the trigger 31. All of these are within the protection scope of this utility model.

[0093] like Figure 2 As shown, the operating mechanism 4 includes a rotatably mounted contact support 41, and a locking member 43 and a jumping member 44 respectively rotatably mounted on the contact support 41. The contact support 41 is connected to an energy storage spring. The moving contact 5 is mounted on the contact support 41. A first connecting rod 24 is provided between the jumping member 44 and the handle member 23. The two ends of the first connecting rod 24 are rotatably connected to the jumping member 44 and the handle member 23 respectively. The locking member 43 and the jumping member 44 are engaged. The locking member 43 is pushed to release the locking member 44. The latching action of 43 and 44 can trigger the operating mechanism to disengage. The energy storage spring drives the contact support 41 to separate the moving contact 5 from the stationary contact 6. The handle 23 is provided with a closing driven part that cooperates with the closing drive part 312. Both the closing drive part 312 and the closing driven part are incomplete gears. The closing drive part 312 drives the handle 23 to rotate through the closing driven part, and then drives the contact support 41 to rotate through the handle 23, so that the contact support 41 drives the moving contact 5 to contact the stationary contact 6.

[0094] The operating mechanism works as follows: when the locking fastener 43 and the jump fastener 44 are engaged, the jump fastener 44 is locked to the contact support 41, preventing the jump fastener 44 from rotating relative to the contact support 41. The handle 23 drives the contact support 41 and the moving contact 5 to rotate and lock the energy storage spring through the first connecting rod 24 and the jump fastener. The release member 33 is used to push the locking fastener 43 to separate the locking fastener 43 from the jump fastener 44, releasing the engagement between the locking fastener 43 and the jump fastener 44 and causing the operating mechanism to release. After the operating mechanism is released, the handle 23 loses its locking effect on the contact support 41 and releases the energy storage spring. The energy storage spring drives the contact support 41 to separate the moving contact 5 from the stationary contact 6.

[0095] like Figure 5The first embodiment of the tripping member 33 is shown, the tripping member 33 of the embodiment includes a rotating tripping part 331 arranged in rotation, and a first tripping part 332 and a second tripping part 333 connected with the rotating tripping part 331 respectively, the first tripping part 332 and the second tripping part 333 rotate around the axis of the rotating tripping part 331 respectively, the trigger member 31 drives the tripping member 33 to rotate by pushing the first tripping part 332, so that the tripping member 33 drives the second tripping part 333 to trigger the operating mechanism 4 to trip, the tripping member 33 is connected with a tripping spring 334, the tripping spring 334 is used to drive the first tripping part 332 to rotate close to the trigger member 31, so that the first tripping part 332 is located on the rotating path of the opening drive part 311, and the second tripping part 333 is away from the locking member 43 of the operating mechanism 4, so as to avoid the second tripping part 333 from affecting the normal operation of the operating mechanism 4.

[0096] Further, the tripping spring 334 is a torsion spring, the tripping spring 334 includes a cylindrical spiral part, and spring rods arranged at both ends of the spiral part respectively, a fixed shaft 11 is arranged in the shell 1, the spiral part and the rotating tripping part 331 are arranged in rotation on the fixed shaft 11 respectively, the two spring rods are connected with the first tripping part 332 and the shell 1 respectively, a limiting structure for limiting the tripping member 33 is not shown in the shell 1, the tripping spring 334 is used to drive the first tripping part 332 to rotate close to the trigger member 31, until the tripping member 33 contacts and is limited by the limiting structure, the trigger member 31 can push the tripping member 33 to rotate against the action of the tripping spring 334 to trigger the operating mechanism 4 to trip, after the trigger member 31 is separated from the tripping member 33, the tripping spring 334 is used to drive the first tripping part 332 to reset to the rotating path of the opening drive part 311, so as to facilitate the next electric opening operation. Of course, the tripping spring 334 can also be a compression spring, a tension spring or a leaf spring and other elastic members.

[0097] Further, the rotating tripping part 331 is a cylindrical structure, the first tripping part 332 and the second tripping part 333 are arranged at both ends of the rotating tripping part 331 along the axis of the rotating tripping part 331, the first tripping part 332 and the second tripping part 333 are located in different planes, the first tripping part 332 is located in the same plane as the opening drive part 311, the second tripping part 333 is arranged in parallel on the side surface of the locking member 43, the second tripping part 333 includes an obliquely arranged first tripping section 335 and a second tripping section 336, the first tripping section 335 is connected between the second tripping section 336 and the rotating tripping part 331, and a V-shaped positioning groove is formed between the first tripping section 335 and the second tripping section 336, the positioning groove can limit the tripping member 33 and the locking member 43 when the locking member 43 is pushed away from the tripping member 44.

[0098] As Figures 18-20The second embodiment of the tripping piece 33 is shown, which includes a sliding part 337 arranged in straight line movement, and a third tripping part 338 and a fourth tripping part 339 arranged at both ends of the sliding part 337 respectively along the movement direction of the sliding part 337, a sliding groove for accommodating the tripping piece 33 is arranged in the housing, the tripping piece 33 is arranged in sliding in the sliding groove, and the third tripping part 338 and the fourth tripping part 339 at both ends respectively extend to the outside of the sliding groove, the third tripping part 338 is provided with a rack 3381, the trigger piece 31 is provided with a tripping drive tooth engaged with the rack 3381, the tripping drive tooth serves as a tripping drive part 311 for pushing the rack 3381, so that the third tripping part 338 drives the tripping piece 33 to move in straight line, and the fourth tripping part 339 is driven by the tripping piece 33 to trigger the operation mechanism 4 to trip. Preferably, the movement direction of the sliding part 337 is arranged in parallel with the length direction of the circuit breaker.

[0099] Further, the tripping piece 33 includes a guide part 3371 arranged at the side of the sliding part 337, the housing is provided with a guide groove 3372 for inserting the guide part 3371, the guide part 3371 is in sliding fit with the guide groove 3372, the guide groove 3372 is provided with a tripping spring 334 connected with the guide part 3371, the tripping spring 334 is used to drive the third tripping part 338 to be located in the rotation path of the tripping drive part 311, and make the fourth tripping part 3393 away from the operation mechanism 4.

[0100] Further, the fourth tripping part 339 is provided with a guide surface 3391 and a stop block 3392 respectively at both sides perpendicular to the movement direction of the sliding part 337, the guide surface 3391 is arranged in inclination with the movement direction of the sliding part 337, for pushing the operation mechanism to trip, the housing is provided with a limiting block 3393, and the stop block 3392 is in contact with the limiting block 3393 under the action of the tripping spring 334.

[0101] As shown in the drawings, Figure 6 The locking piece 43 of the embodiment has a locking rotating part 431, and a locking short-circuit part 432, a locking overload part 433 and a locking locking part 434 connected with the locking rotating part 431 respectively, the locking locking part 434 is used to buckle with the jumper piece 44 to limit, so that the jumper piece 44 cannot rotate relative to the contact support 41, the locking short-circuit part 432 is matched with the short-circuit tripping device 13, the short-circuit tripping device 13 pushes the locking short-circuit part 432 when the short-circuit current meets the threshold value, so that the locking locking part 434 is separated from the jumper piece 44 to trigger the operation mechanism 4 to trip.

[0102] The lock overload part 433 is provided with a sliding groove 436 matched with the pull rod 435, the sliding groove 436 is matched with the overload tripping device 12, the overload tripping device 12 pulls the lock overload part 433 through the pull rod 435 when the overload current meets the threshold value, so that the lock locking part 434 is separated from the jump buckle part 44 to trigger the operating mechanism 4 to trip.

[0103] Further, the transmission part 437 is arranged between the lock part 43 and the tripping part 33, the transmission part 437 is arranged on one of the lock part 43 and the tripping part 33, when the transmission part 437 is arranged on the lock part 43, the trigger part 31 is used to push the transmission part 437 arranged on the lock part 43, so that the lock part 43 is separated from the jump buckle part 44; or the transmission part 437 is arranged on the tripping part 33, the tripping part 33 drives the transmission part 437 to push the lock part 43, so that the lock part 43 is separated from the jump buckle part 44.

[0104] The transmission part 437 of the embodiment is integrally formed with the lock part 43, the transmission part 437 is arranged on the lock overload part 433 of the lock part 43, the positioning groove on the tripping part 33 is used to limit the transmission part 437, and the second tripping section 336 is used to push the transmission part 437 arranged on the lock part 43, so that the lock overload part 433 drives the lock part 43 to be separated from the jump buckle part 44. Of course, the transmission part 437 can also be integrally formed with the tripping part 33, which belongs to the protection scope of the utility model.

[0105] As shown in the drawings, Figure 11 , As shown in the drawings, 14 The electric operating mechanism 3 of the embodiment further includes a first micro switch 9B, a second micro switch 9C and a control circuit, the first micro switch 9B and the second micro switch 9C are matched with the trigger part 31 and the operating mechanism 4 respectively, the control circuit includes a first closing circuit, a first opening circuit, a second closing circuit and a second opening circuit, the first closing circuit and the first opening circuit are connected in parallel, the second closing circuit and the second opening circuit are connected in parallel, the first micro switch 9B is used to switch between the first closing circuit and the first opening circuit, the second micro switch 9C is used to switch between the second closing circuit and the second opening circuit, the first closing circuit and the second closing circuit are respectively used to supply power to the electric motor 32 when the electric closing is performed, and the first opening circuit and the second opening circuit are respectively used to supply power to the electric motor 32 when the electric opening is performed.

[0106] Specifically, the two output terminals of the first micro switch 9B are connected with the first closing circuit and the first opening circuit respectively, when the motor 32 drives the operating mechanism to perform the electric closing or electric opening operation, the time-connection driving first micro switch 9B switches between the two output terminals, in the electric opening, the first micro switch 9B is used to connect the first closing circuit and disconnect the first opening circuit, or in the electric closing, the first micro switch 9B is used to disconnect the first closing circuit and connect the first opening circuit;

[0107] The two output terminals of the second micro switch 9C are connected with the second closing circuit and the second opening circuit respectively, the operating mechanism 4 is used to drive the second micro switch 9C to switch between the two output terminals, in the electric opening and manual opening, the second micro switch 9C is used to connect the second closing circuit and disconnect the second opening circuit, at this time the motor 32 is not connected with the first closing circuit, but the second closing circuit can provide the closing current for the motor 32 to realize the electric closing, or in the electric closing and manual closing, the second micro switch 9C is used to disconnect the second closing circuit and connect the second opening circuit, at this time the motor 32 is not connected with the first opening circuit, but the second opening circuit can provide the opening current for the motor 32 to realize the electric opening.

[0108] The circuit breaker of the embodiment provides the closing current for the motor 32 by connecting the electrically controlled first closing circuit and the manually controlled second closing circuit in parallel, and provides the opening current for the motor 32 by connecting the electrically controlled first opening circuit and the manually controlled second opening circuit in parallel, after the electric closing or manual closing, the first opening circuit and / or the second opening circuit is connected to provide the opening current for the motor 32, and after the electric opening or manual opening, the first closing circuit and / or the second closing circuit is connected to provide the closing current for the motor 32, without switching between the electric mode and the manual mode, the electric mode and the manual mode are realized to be always resident.

[0109] It can be understood that the electric mechanism 3 can also not be provided with the first micro switch 9B and the second micro switch 9C, a switching micro switch and a switching button which are not shown in the figure can be provided, the switching micro switch is used to realize the switching between the manual working mode and the automatic working mode of the circuit breaker, by controlling the working state of the electric mechanism 3, the automatic working mode of the circuit breaker is enabled or closed.

[0110] As Figure 11As shown, the housing 1 is provided with a first circuit board 14 and a second circuit board 15 stacked, the first circuit board 14 is electrically connected with the second circuit board 15, the first circuit board 14 is provided with a signal connector 16, the first micro switch 9B and the second micro switch 9C are arranged on the second circuit board 15, the trigger 31 is used for triggering the first micro switch 9B, and the contact support 41 is used for triggering the second micro switch 9C. Two circuit boards are arranged to facilitate the adjustment of the position of the second circuit board 15 and the cooperation of the trigger 31 and the contact support 41. Of course, only one circuit board can be arranged, that is, the first circuit board 14 and the second circuit board 15 are arranged integrally.

[0111] Further, as shown in the figure, Figures 3-4 The trigger 31 is provided with a first trigger part 316, the first trigger part 316 and the tripping driving part 311 are arranged on the two opposite sides of the trigger 31, the first trigger part 316 is used for triggering the first micro switch 9B to switch between the two output ends, when the trigger 31 is in the second position, the first trigger part 316 is used for pressing the first micro switch 9B, so that the first micro switch 9B turns on the first tripping circuit, so as to facilitate the next electric tripping operation, when the trigger 31 is in the first position, the first trigger part 316 is away from the first micro switch 9B, and the first micro switch 9B automatically turns on the first closing circuit, so as to facilitate the next electric closing operation.

[0112] Further, the tripping driving part 311 and the closing driving part 312 are arranged on the two sides of the rotation axis of the trigger 31. The angle of the trigger 31 rotating from the first position to the second position can be the same as or different from the angle of the trigger 31 rotating from the second position to the first position. Generally, one cycle of electric closing and tripping operation is performed, and the trigger 31 rotates 360 degrees. When the electric closing is performed, the electric motor drives the trigger 31 to rotate, and the trigger 31 is stationary when the manual tripping and closing are performed. If the last operation is electric closing, the trigger 31 needs to idle once and then start closing after the manual tripping. In the state that the manual mechanism 2 is abnormally locked, after the electric tripping makes the operating mechanism trip, the handle member 23 has not been reset, and when the electric closing instruction is applied again, the trigger 31 cannot realize the closing through the handle member 23.

[0113] As shown in the figure, Figure 12As shown, the contact support 41 of the operating mechanism 4 is used to trigger the second micro switch 9C to switch between two output ends. Specifically, the contact support 41 comprises a contact rotating part 411 rotatably installed on the housing 1 and a jump buckle support part 412 connected with the contact support 41, the jump buckle part 44 is rotatably arranged on the jump buckle support part 412, the jump buckle support part 412 is provided with a protruding second trigger part 414 on the side away from the jump buckle part 44, the second trigger part 414 is used to trigger the second micro switch 9C to switch between two output ends, when the contact support 41 is in the open position, the second trigger part 414 can press the second micro switch 9C, so that the second micro switch 9C turns on the second closing circuit and turns off the second opening circuit, when the contact support 41 is in the closed position, the second trigger part 414 can be away from the second micro switch 9C, so that the second micro switch 9C turns off the second closing circuit and turns on the second opening circuit.

[0114] It can be understood that the second micro switch 9C can also be triggered to switch between two output ends by other parts, for example, the second micro switch 9C is triggered to switch between two output ends by the lock buckle part 43 and the handle part 23, which all belong to the protection scope of the utility model.

[0115] As shown in the figure, Figure 14 When the circuit breaker is in the open position, the first micro switch 9B turns on the first closing circuit and the second micro switch 9C turns on the second closing circuit, the closing voltage signal is loaded between the first micro switch 9B and the first closing circuit during automatic closing, after the electric operating mechanism 3 drives the circuit breaker to close through the operating mechanism 4, Figure 15 As shown in the figure, the trigger part 31 drives the first micro switch 9B to turn off the first closing circuit and turn on the first opening circuit, during closing, the manual mechanism 2 and the operating mechanism 4 move to the closing position correspondingly, at the same time, the action of the manual mechanism 2 or the operating mechanism 4 during closing drives the second micro switch 9C to turn off the second closing circuit and turn on the second opening circuit.

[0116] As shown in the figure, Figure 15 When the circuit breaker is in the closed position, the first micro switch 9B turns on the first opening circuit and the second micro switch 9C turns on the second opening circuit, the opening voltage signal is loaded between the first micro switch 9B and the first opening circuit during automatic opening, after the electric operating mechanism 3 drives the circuit breaker to open through the operating mechanism 4, Figure 14 As shown in the figure, the trigger part 31 drives the first micro switch 9B to turn off the first opening circuit and turn on the first closing circuit, during opening, the manual mechanism 2 and the operating mechanism 4 move to the opening position correspondingly, at the same time, the action of the manual mechanism 2 or the operating mechanism 4 during opening drives the second micro switch 9C to turn off the second opening circuit and turn on the second closing circuit.

[0117] When the circuit breaker is in the closed state, when the first micro switch 9B connects the first tripping circuit and the second micro switch 9C connects the second tripping circuit, the circuit breaker is driven to trip via the manual mechanism 2. The action of the manual mechanism 2 or the operating mechanism 4 when tripping drives the second micro switch 9C to disconnect the second tripping circuit and connect the second closing circuit, thus entering the following state: Figure 16 The state shown is as follows; at this time, when the electric closing is performed again, a closing voltage signal is applied across the first micro switch 9B and the first opening circuit. The motor 32 drives the trigger 31 to rotate, and the trigger 31 drives the first micro switch 9B to disconnect the first opening circuit and connect the first closing circuit, entering the state shown. Figure 14 As shown in the diagram, the electric mechanism 3 then drives the circuit breaker to close via the operating mechanism 4. The trigger 31 drives the first micro switch 9B to disconnect the first closing circuit and connect the first opening circuit. Simultaneously, the manual mechanism 2 or the operating mechanism 4 drives the second micro switch 9C to disconnect the second closing circuit and connect the second opening circuit, thus entering the state shown. Figure 15 The state shown.

[0118] When the circuit breaker is in the open state, the first micro switch 9B connects the first closing circuit and the second micro switch 9C connects the second closing circuit. After the circuit breaker is closed by the manual mechanism 2, the action of the manual mechanism 2 or the operating mechanism 4 when closing drives the second micro switch 9C to disconnect the second closing circuit and connect the second opening circuit, thus entering the following state: Figure 17 The state shown is as follows; at this time, electric tripping is then performed. A tripping voltage signal is applied across the first micro switch 9B and the first closing circuit. The motor 32 drives the trigger 31 to rotate, and the trigger 31 drives the first micro switch 9B to disconnect the first closing circuit and connect the first tripping circuit, entering the state shown. Figure 15 As shown in the diagram, the electric mechanism 3 then drives the circuit breaker to trip via the operating mechanism 4. The trigger 31 drives the first micro switch 9B to disconnect the first tripping circuit and connect the first closing circuit. Simultaneously, the manual mechanism 2 or the operating mechanism 4 drives the second micro switch 9C to disconnect the second tripping circuit and connect the second closing circuit, thus entering the state shown. Figure 14 The state shown.

[0119] The first micro switch 9B includes a common contact b3, a normally closed contact b0, and a normally open contact b1. The normally closed contact b0 and the normally open contact b1 are respectively connected in the first closing circuit and the first opening circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected in the first opening circuit and the first closing circuit. The second micro switch 9C includes a common contact c3, a normally closed contact c0, and a normally open contact c1. The normally closed contact c0 and the normally open contact c1 are respectively connected in the second closing circuit and the second opening circuit, or the normally closed contact c0 and the normally open contact c1 are respectively connected in the second opening circuit and the second closing circuit.

[0120] like Figures 14-17In the specific embodiment shown, the normally closed contact c0 is connected to the second closing circuit, the normally open contact c1 is connected to the second opening circuit, and the common contact c3 is connected to the common contact b3; when the common contact c3 is connected to the normally closed contact c0, the second closing circuit is connected; when the common contact c3 is connected to the normally open contact, the second opening circuit is connected.

[0121] Preferably, as shown in Figures 14-17 In the specific embodiment shown, the motor 32 is a DC motor, the first closing circuit includes a diode D3 and a power terminal E1, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 32, and the negative terminal of the motor 32 is connected to the power terminal E1; the first opening circuit includes a diode D1 and a power terminal E2, the normally open contact b1 is connected to the cathode of the diode D1, the cathode of the diode D1 is connected to the negative terminal of the motor 32, and the positive terminal of the motor 32 is connected to the power terminal E2; the second closing circuit includes a diode D6, the normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal; the second opening circuit includes a diode D5, the normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal; the common contact b3 is connected to the common contact c3.

[0122] In the specific embodiment shown, the motor 32 is a DC motor, the first closing circuit includes a diode D3 and a power terminal E1, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 32, and the negative terminal of the motor 32 is connected to the power terminal E1; the first opening circuit includes a diode D1 and a power terminal E2, the normally open contact b1 is connected to the cathode of the diode D1, the cathode of the diode D1 is connected to the negative terminal of the motor 32, and the positive terminal of the motor 32 is connected to the power terminal E2; the second closing circuit includes a diode D6, the normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal; the second opening circuit includes a diode D5, the normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal; the common contact b3 is connected to the common contact c3. Figure 14 In the specific embodiment shown, the motor 32 is a DC motor, the first closing circuit includes a diode D3 and a power terminal E1, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 32, and the negative terminal of the motor 32 is connected to the power terminal E1; the first opening circuit includes a diode D1 and a power terminal E2, the normally open contact b1 is connected to the cathode of the diode D1, the cathode of the diode D1 is connected to the negative terminal of the motor 32, and the positive terminal of the motor 32 is connected to the power terminal E2; the second closing circuit includes a diode D6, the normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal; the second opening circuit includes a diode D5, the normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal; the common contact b3 is connected to the common contact c3. Figure 15 In the specific embodiment shown, the motor 32 is a DC motor, the first closing circuit includes a diode D3 and a power terminal E1, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 32, and the negative terminal of the motor 32 is connected to the power terminal E1; the first opening circuit includes a diode D1 and a power terminal E2, the normally open contact b1 is connected to the cathode of the diode D1, the cathode of the diode D1 is connected to the negative terminal of the motor 32, and the positive terminal of the motor 32 is connected to the power terminal E2; the second closing circuit includes a diode D6, the normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal; the second opening circuit includes a diode D5, the normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal; the common contact b3 is connected to the common contact c3.

[0123] In the specific embodiment shown, the motor 32 is a DC motor, the first closing circuit includes a diode D3 and a power terminal E1, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 32, and the negative terminal of the motor 32 is connected to the power terminal E1; the first opening circuit includes a diode D1 and a power terminal E2, the normally open contact b1 is connected to the cathode of the diode D1, the cathode of the diode D1 is connected to the negative terminal of the motor 32, and the positive terminal of the motor 32 is connected to the power terminal E2; the second closing circuit includes a diode D6, the normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal; the second opening circuit includes a diode D5, the normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal; the common contact b3 is connected to the common contact c3. Figure 15As shown, the circuit breaker is in the closed state, the first micro switch 9B connects the first tripping circuit and the second micro switch 9C connects the second tripping circuit, the tripping voltage signal power terminal E0 is connected to the negative pole and the power terminal E1 is connected to the positive pole, the current through the power terminal E1, the diode D4, the motor 32, the diode D1, the normally open contact b1, the common contact b3, the power terminal E0, the diode D5, the normally open contact c1, the normally closed contact c3, the power terminal E0 in sequence, and then flows out of the motor 32, the motor 32 rotates in the positive direction and drives the trigger 31 to rotate from the second position to the first position, the circuit breaker completes tripping, at the same time, the first trigger part 316 of the trigger 31 releases the first drive rod of the first micro switch 9B, so that the first micro switch 9B disconnects the first tripping circuit and connects the first closing circuit; at the same time, when the circuit breaker completes tripping, the handle assembly 23 drives the manual mechanism to act through the second connecting rod 25, the second trigger part 414 of the contact support 41 releases the second drive rod of the second micro switch 9C, so that the second micro switch 9C disconnects the second tripping circuit and connects the second closing circuit, and enters the state as shown in Figure 14 .

[0124] Referring to Figure 15 , the circuit breaker is in the closed state, the first micro switch 9B connects the first tripping circuit and the second micro switch 9C connects the second tripping circuit, after the circuit breaker is tripped by the manual mechanism 2, the second micro switch 9C disconnects the second tripping circuit and connects the second closing circuit, and enters the state as shown in Figure 16 , the tripping voltage signal power terminal E0 is connected to the positive pole and the power terminal E1 is connected to the negative pole, the current through the power terminal E0, the common contact c3, the normally closed contact c0, the diode D6, the motor 32, the diode D2, the power terminal E1 in sequence, and then flows out of the motor 32, the motor 32 rotates in the positive direction and drives the trigger 31 to rotate from the second position to the first position, at the same time, the first trigger part 316 of the trigger 31 releases the first drive rod of the first micro switch 9B, so that the first micro switch 9B disconnects the first tripping circuit and connects the first closing circuit, and enters the state as shown in Figure 14 ; the motor 32 continues to rotate in the positive direction, the trigger 31 rotates from the first position to the second position, after the circuit breaker is closed, the first trigger part 316 of the trigger 31 drives the first micro switch 9B to disconnect the first closing circuit and connect the first tripping circuit; at the same time, when the circuit breaker is closed, the handle assembly 23 drives the manual mechanism to act through the second connecting rod 25, the manual mechanism drives the second micro switch 9C to disconnect the second closing circuit and connect the second tripping circuit, and enters the state as shown in Figure 15 .

[0125] With reference to Figure 14 , when the circuit breaker is in the open state, the first micro switch 9B connects the first closing circuit and the second micro switch 9C connects the second closing circuit, after the circuit breaker is closed by the manual mechanism 2, the second micro switch 9C disconnects the second closing circuit and connects the second opening circuit, enters the state as shown in Figure 17 , the open voltage signal power terminal E0 is connected to the negative pole and the power terminal E1 is connected to the positive pole, the current is loaded between the first micro switch 9B and the first closing circuit, flows into the motor 32 through the power terminal E1 and the diode D4 connected in sequence, flows out of the motor 32 through the diode D5, the normally open contact c1, the common contact c3 and the power terminal E1 connected in sequence, the motor 32 rotates in the positive direction and drives the trigger 31 to rotate from the first position to the second position, at the same time, the first trigger part 316 of the trigger 31 releases the first driving rod of the first micro switch 9B, disconnects the first closing circuit and connects the first opening circuit, enters the state as shown in Figure 15 ; the motor 32 continues to rotate in the positive direction, the trigger 31 rotates from the second position to the first position, after the circuit breaker is opened, the first trigger part 316 of the trigger 31 drives the first micro switch 9B to disconnect the first opening circuit and connect the first closing circuit; at the same time, when the circuit breaker is opened, the handle component 23 drives the manual mechanism to act through the second connecting rod 25, the second trigger part 414 of the contact support 41 drives the second micro switch 9C to disconnect the second opening circuit and connect the second closing circuit, enters the state as shown in Figure 14 .

[0126] It should be noted that in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when used, which is only for the convenience of description, and does not indicate that the device or element referred to must have a specific orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0127] The above content is a further detailed description of the utility model in combination with specific preferred embodiments, which cannot be considered as limiting the specific implementation of the utility model to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, which should be considered as belonging to the protection scope of the utility model.

Claims

1. A circuit breaker comprising a housing (1) and a manual mechanism (2), an electric mechanism (3), an operating mechanism (4), a movable contact (5) and a stationary contact (6) arranged in the housing (1), the manual mechanism (2) and the electric mechanism (3) being able to bring the movable contact (5) into contact and out of contact with the stationary contact (6) by means of the operating mechanism (4), respectively, characterized in that: The electric mechanism (3) comprises a trigger (31) arranged to rotate and a motor (32) for driving the trigger (31) to rotate, and a tripping member (33) is arranged between the trigger (31) and the operating mechanism (4), the trigger (31) is provided with a tripping driving part (311), the motor (32) can drive the trigger (31) to rotate, the tripping driving part (311) drives the tripping member (33) to trigger the operating mechanism (4) to trip, and the operating mechanism (4) drives the moving contact (5) to separate from the static contact (6).

2. The circuit breaker of claim 1, wherein: The trigger (31) is also provided with a closing driving part (312), the tripping driving part (311) and the closing driving part (312) are arranged to be staggered along the rotating direction of the trigger (31), the trigger (31) can rotate between a first position and a second position, when the trigger (31) rotates from the first position to the second position, the closing driving part (312) pushes the manual mechanism (2) or the operating mechanism (4), so that the operating mechanism (4) drives the moving contact (5) to contact the static contact (6), when the trigger (31) rotates from the second position to the first position, the tripping driving part (311) drives the tripping member (33) to trigger the operating mechanism (4) to trip, so that the operating mechanism (4) drives the moving contact (5) to separate from the static contact (6).

3. The circuit breaker of claim 2, wherein: The electric mechanism (3) further comprises a first micro switch (9B), a second micro switch (9C), a first closing circuit, a first opening circuit, a second closing circuit and a second opening circuit, the trigger (31) is used to trigger the first micro switch (9B), the operating mechanism (4) is used to trigger the second micro switch (9C), after electric closing or manual closing, the first opening circuit and / or the second opening circuit is turned on to provide opening current for the motor (32), after electric opening or manual opening, the first closing circuit and / or the second closing circuit is turned on to provide closing current for the motor (32).

4. The circuit breaker of claim 3, wherein: When the trigger (31) is in the second position, the trigger (31) presses the first micro switch (9B), so that the first micro switch (9B) turns on the first opening circuit and turns off the first closing circuit, when the trigger (31) is in the first position, the trigger (31) can be away from the first micro switch (9B), so that the first micro switch (9B) turns off the first opening circuit and turns on the first closing circuit.

5. The circuit breaker of claim 3, wherein: The operating mechanism (4) comprises a contact support (41) arranged to rotate, the moving contact (5) is arranged on the contact support (41), and the contact support (41) is used to trigger the second micro switch (9C).

6. The circuit breaker of claim 5, wherein: When the contact support (41) is opened, the contact support (41) can press the second micro switch (9C), so that the second micro switch (9C) turns on the second closing circuit and turns off the second opening circuit, when the contact support (41) is closed, the contact support (41) can be away from the second micro switch (9C), so that the second micro switch (9C) turns off the second closing circuit and turns on the second opening circuit.

7. The circuit breaker of claim 5, wherein: The operating mechanism (4) comprises a locking piece (43) and a tripping piece (44) rotatably arranged on a contact support (41) respectively, the contact support (41) is connected with an energy storage spring, the movable contact (5) is arranged on the contact support (41), the locking piece (43) and the tripping piece (44) are snap-fitted, and the tripping piece (33) is used for pushing the locking piece (43) to release the snap-fitting of the locking piece (43) and the tripping piece (44) so that the operating mechanism is tripped.

8. The circuit breaker of claim 7, wherein: The contact support (41) comprises a contact rotating part (411) rotatably arranged on the shell (1) and a tripping support part (412) connected with the contact support (41), the tripping piece (44) is rotatably arranged on the tripping support part (412), and the tripping support part (412) is provided with a protruding second trigger part (414) on the side away from the tripping piece (44), and the second trigger part (414) is used for triggering the second micro switch (9C).

9. The circuit breaker of claim 3, wherein: The trigger piece (31) is provided with a first trigger part (316), the first trigger part (316) and the opening driving part (311) are arranged on two sides of the trigger piece (31) opposite to each other, and the first trigger part (316) is used for triggering the first micro switch (9B).

10. The circuit breaker of claim 3, wherein: The shell (1) is provided with a first circuit board (14) and a second circuit board (15) stacked in the shell (1), the first circuit board (14) is electrically connected with the second circuit board (15), the first circuit board (14) is provided with a signal connector (16), and the first micro switch (9B) and the second micro switch (9C) are arranged on the second circuit board (15).

11. The circuit breaker of claim 3, wherein: The opening driving part (311) and the closing driving part (312) are arranged on two sides of the rotation axis of the trigger piece (31) opposite to each other.

12. The circuit breaker of claim 7, wherein: The tripping piece (33) comprises a tripping rotating part (331) rotatably arranged, and a first tripping part (332) and a second tripping part (333) connected with the tripping rotating part (331) respectively, the first tripping part (332) and the second tripping part (333) rotate around the axis of the tripping rotating part (331) respectively, the trigger piece (31) is used for pushing the first tripping part (332) to drive the tripping piece (33) to rotate, so that the second tripping part (333) of the tripping piece (33) triggers the operating mechanism (4) to trip.

13. The circuit breaker of claim 12, wherein: The tripping piece (33) is connected with a tripping spring (334), the tripping spring (334) is used for driving the first tripping part (332) to rotate close to the trigger piece (31), so that the first tripping part (332) is located on the rotation path of the opening driving part (311), and the second tripping part (333) is away from the operating mechanism (4).

14. The circuit breaker of claim 13, wherein: The tripping spring (334) is a torsion spring, which comprises a cylindrical spiral part and spring rods arranged at both ends of the spiral part respectively, a fixed shaft (11) is arranged in the shell (1), the spiral part and the tripping rotating part (331) are arranged on the fixed shaft (11) respectively, the two spring rods are connected with the first tripping part (332) and the shell (1) respectively, the shell (1) is provided with a limiting structure for limiting the tripping part (33), the tripping spring (334) is used for driving the first tripping part (332) to rotate close to the trigger part (31) until the tripping part (33) is in contact with the limiting structure, the trigger part (31) can push the tripping part (33) to rotate to trigger the operation mechanism (4) to trip against the action of the tripping spring (334).

15. The circuit breaker of claim 1, wherein: The tripping part (33) comprises a sliding part (337) arranged in a straight line, and a third tripping part (338) and a fourth tripping part (339) arranged at both ends of the sliding part (337) respectively along the moving direction of the sliding part (337), the third tripping part (338) is provided with a rack (3381), the trigger part (31) is provided with a split driving tooth engaged with the rack (3381), the split driving tooth is used as a split driving part (311) for pushing the rack (3381), so that the third tripping part (338) drives the tripping part (33) to move in a straight line, and the fourth tripping part (339) is driven by the tripping part (33) to trigger the operation mechanism (4) to trip.

16. The circuit breaker of claim 15, wherein: The tripping part (33) comprises a guide part (3371) arranged on the side of the sliding part (337), the shell is provided with a guide groove (3372) for inserting the guide part (3371), the guide part (3371) and the guide groove (3372) are in sliding fit, the guide groove (3372) is provided with a tripping spring (334) connected with the guide part (3371), the tripping spring (334) is used for driving the third tripping part (338) to be located on the rotating path of the split driving part (311), and the fourth tripping part (339333) is driven to move away from the operation mechanism (4).

17. The circuit breaker of claim 16, wherein: The fourth tripping part (339) is provided with a guide surface (3391) and a stop block (3392) on both sides perpendicular to the moving direction of the sliding part (337) respectively, the guide surface (3391) is arranged obliquely to the moving direction of the sliding part (337), and is used for pushing the operation mechanism (4) to trip, the shell is provided with a limiting block (3393), and the stop block (3392) is in contact with the limiting block (3393) under the action of the tripping spring (334).

18. The circuit breaker of claim 12, wherein: The transmission part (437) is arranged on the locking piece (43), and the tripping piece (33) is used to push the transmission part (437) arranged on the locking piece (43), so that the locking piece (43) is separated from the jump piece (44); or the transmission part (437) is arranged on the tripping piece (33), and the tripping piece (33) drives the transmission part (437) to push the locking piece (43), so that the locking piece (43) is separated from the jump piece (44).

19. The circuit breaker of claim 18, wherein: The first tripping part (332) and the second tripping part (333) are arranged at two ends of the tripping rotating part (331) along an axis of the tripping rotating part (331), the first tripping part (332) is located in the same plane as the opening driving part (311), the second tripping part (333) is arranged on a side surface of the locking piece (43), the second tripping part (333) comprises an obliquely arranged first tripping section (335) and a second tripping section (336), the first tripping section (335) is connected between the second tripping section (336) and the tripping rotating part (331), a positioning groove is formed between the first tripping section (335) and the second tripping section (336), the positioning groove is used to limit the transmission part (437), and the second tripping section (336) is used to push the transmission part (437) arranged on the locking piece (43), so that the locking piece (43) is separated from the jump piece (44).

20. The circuit breaker of claim 7, wherein: The locking piece (43) has a locking rotating part (431), and a locking short-circuit part (432), a locking overload part (433) and a locking locking part (434) connected with the locking rotating part (431) respectively, the locking locking part (434) is used to limit the jump piece (44) through buckling, the locking short-circuit part (432) cooperates with the short-circuit tripping device (13), the short-circuit tripping device (13) can push the locking short-circuit part (432), so that the locking locking part (434) is separated from the jump piece (44), and the locking overload part (433) cooperates with the overload tripping device (12), the overload tripping device (12) can pull the locking overload part (433), so that the locking locking part (434) is separated from the jump piece (44).

21. The circuit breaker of claim 3, wherein: The trigger piece (31) comprises a trigger gear (313), an opening rotating part (314) and a closing rotating part (315) arranged coaxially, the opening rotating part (314) is provided with an opening boss protruding in a radial direction, the opening boss serves as the opening driving part (311) and is used to drive the tripping piece (33) to trigger the operation mechanism (4) to trip, the closing rotating part (315) is provided with a closing driving tooth protruding in a radial direction, the closing driving tooth serves as the closing driving part (312) and is used to drive the manual mechanism (2) or the operation mechanism (4) to realize closing, and the closing driving tooth is an incomplete gear.

22. The circuit breaker of claim 21, wherein: The trigger gear (313), the opening rotating part (314) and the closing rotating part (315) are arranged in sequence along the axial direction, and the opening rotating part (314) is arranged between the trigger gear (313) and the closing rotating part (315).

23. The circuit breaker of claim 3, wherein: The two output ends of the first micro switch (9B) are connected with the first closing circuit and the first opening circuit respectively, the motor (32) can drive the first micro switch (9B) to switch between the two output ends, when the motor is opened, the first micro switch (9B) is used to turn on the first closing circuit while turning off the first opening circuit, or when the motor is closed, the first micro switch (9B) is used to turn off the first closing circuit while turning on the first opening circuit; The two output ends of the second micro switch (9C) are connected with the second closing circuit and the second opening circuit respectively, the operating mechanism (4) can drive the second micro switch (9C) to switch between the two output ends, when the motor is opened and manually opened, the second micro switch (9C) is used to turn on the second closing circuit while turning off the second opening circuit, the second closing circuit is used to provide the closing current for the motor (32), or when the motor is closed and manually closed, the second micro switch (9C) is used to turn off the second closing circuit while turning on the second opening circuit, the second opening circuit is used to provide the closing current for the motor (32).

24. The circuit breaker of claim 7, wherein: The manual mechanism (2) comprises a button (21) and a rotating handle (23), the button (21) is connected with the handle (23), a first connecting rod (24) is arranged between the jump buckle (44) and the handle (23), the two ends of the first connecting rod (24) are rotatably connected with the jump buckle (44) and the handle (23) respectively, a second connecting rod (25) is arranged between the handle (23) and the button (21), the handle (23) is provided with a closing driven part matched with the closing driving part (312), the closing driving part (312) drives the handle (23) to rotate through the closing driven part, the handle (23) drives the movable contact (5) to contact with the static contact (6) through the contact support (41) to realize closing.

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