Operating mechanism and circuit breaker

Abstract

The operating mechanism comprises a supporting assembly, an interlocking assembly, a traction rod and a manual operating assembly, the interlocking assembly is switched between a locking state and an unlocking state, the locking state of the interlocking assembly is limited and locked by the traction rod, and after limiting and locking of the traction rod and the interlocking assembly which rotate in an opening mode are relieved, the interlocking assembly is switched to the unlocking state. The manual operation assembly comprises an operation piece and a sliding piece, the rotation operation piece rotates in the axial direction of the rotation operation piece to drive the sliding piece to move between the closing position and the opening position, the sliding piece moves towards the closing position to drive the interlocking assembly to be switched to the locking state, and the sliding piece moves towards the opening position to drive the traction rod to rotate in an opening mode. The interlocking assembly is switched to an unlocking state after the limiting cooperation with the traction rod is removed. Manual operation is achieved by arranging the manual operation assembly, the manual operation assembly conducts operation along the operation piece rotating in the axial direction of the manual operation assembly, the occupied space is small, the sliding piece is directly matched with the traction rod, and the beneficial effects of being high in matching stability are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of low voltage apparatus, concretely relates to an operating mechanism and circuit breaker. BACKGROUND

[0002] In the distribution network, the circuit breaker is used for connecting, breaking and carrying rated working current, and can reliably protect the line and the electrical equipment in the case of overload, short circuit, overvoltage and undervoltage, in addition, the circuit breaker also has the function of automatic reclosing after the circuit breaker is tripped by the residual current, undervoltage and overvoltage fault.

[0003] In the existing product, the circuit breaker also has the function of reclosing, however, it has the following defects: firstly, it lacks a manual operation assembly, so that the operating mechanism cannot be manually tripped and closed; secondly, some circuit breakers are equipped with a manual operation assembly, the movement track of the manual operation assembly is usually swinging, and the manual operation assembly needs to be indirectly matched with the traction rod through the connecting rod assembly in the operating mechanism, which has the defects of complex matching mode, large space occupation and poor stability; thirdly, a large number of connecting rod assemblies are arranged in the operating mechanism, which occupies a large space and is not conducive to forming a modular structure; fourthly, when the operating mechanism is driven to be tripped and closed by the motor and the gear set, the output rotation of the motor and the transmission time of the gear set are relatively long, which causes the long closing period and slow response. SUMMARY

[0004] The utility model aims at overcoming at least one defect of the prior art, and provides an operating mechanism and circuit breaker.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides an operating mechanism, including support component, the support component is equipped with interlocking assembly and traction rod, the interlocking assembly is switched between locking state and unlocking state, the interlocking assembly is connected with connecting rod assembly,

[0007] The locking state of the interlocking assembly is limited and locked by the traction rod, after the traction rod in tripping rotation and the interlocking assembly are limited and locked, the interlocking assembly is switched to the unlocking state,

[0008] The support component is also equipped with a manual operation assembly, the manual operation assembly includes an operating member and a sliding member, the operating member is rotated along the axial direction of itself to drive the sliding member to move between the closing position and the tripping position, the sliding member moves to the closing position to drive the interlocking assembly to switch to the locking state, and the sliding member moves to the tripping position to drive the traction rod to rotate in tripping, and the interlocking assembly switched to the unlocking state after being limited and matched with the traction rod.

[0009] Preferably, the sliding member is provided with a trigger part, the moving track of the trigger part is a straight line, the trigger part drives the interlocking assembly to switch from the unlocked state to the locked state, or the trigger part drives the pulling rod to rotate to release the limiting cooperation with the interlocking assembly.

[0010] Preferably, the pulling rod comprises a locking part and at least one opening part, the locking part is limited and locked with the interlocking assembly in the locked state, the trigger part pushes one of the opening parts, so that the pulling rod rotates to release the limiting cooperation with the interlocking assembly.

[0011] Preferably, the interlocking assembly comprises a locking part and a locking shaft, the locking part is rotatably arranged on the supporting assembly, the locking part is provided with a sliding groove for sliding cooperation with the locking shaft, the connecting rod assembly is connected to the locking shaft, the sliding groove comprises a locking area and an unlocking area which are communicated with each other,

[0012] The locking shaft moves from the unlocking area to the locking area, and the locking part rotates from the unlocking position to the locking position.

[0013] The locking part rotates from the locking position to the unlocking position, and the locking shaft moves from the locking area to the unlocking area.

[0014] The locking shaft is located on the closing moving track of the trigger part, and the locking part in the locking position is limited and cooperated with the pulling rod.

[0015] Preferably, the locking part is connected with a locking reset part.

[0016] The locking reset part switches between the first state and the second state with the rotation of the locking part.

[0017] When the pulling rod locks the interlocking assembly in the locked state, the locking reset part is in the first state, and when the interlocking assembly switches to the unlocked state, the locking reset part switches to the second state.

[0018] Preferably, the supporting assembly comprises a pair of side plates arranged at intervals, the interlocking assembly and the manual operating assembly are arranged between the pair of side plates, the sliding member and the locking shaft are respectively slidingly cooperated with the side plates, the operating part is rotatably arranged between the pair of side plates, and the driving shaft is connected between the sliding member and the operating part, the shaft center of the driving shaft deviates from the shaft center of the operating part.

[0019] Preferably, the supporting assembly further comprises a mounting plate, the mounting plate is fixed on the pair of side plates and is provided with an operating hole, the operating part is rotatably arranged between the mounting plate and the sliding member, and the operating part of the operating part is arranged out of the operating hole.

[0020] Preferably, the side plate is provided with a first guide groove and a second guide groove which are parallel to each other, and the sliding piece is provided with a guide shaft which is in sliding fit with the first guide groove and the second guide groove respectively.

[0021] Preferably, the side plate is provided with a protruding matching part, the traction rod is provided with a matching groove, and the matching part is inserted into the matching groove to enable the traction rod to rotate around the matching part.

[0022] Preferably, the operating piece comprises a fixedly connected operating part and a body, one side of the body protrudes outward to form the operating part, the driving part is connected with a driving shaft, the driving shaft is located on the front and back sides of the body and is parallel to the axis of the operating part.

[0023] Preferably, the sliding piece comprises a U-shaped body, the connecting wall of the U-shaped body is provided with a driving groove, the operating piece drives the sliding piece to move through the driving groove, the side wall of the U-shaped body is provided with an axle hole in which a guide shaft is assembled, and the side wall edge of the U-shaped body is provided with a protruding trigger part.

[0024] Preferably, the locking piece comprises a locking body, one end of the locking body is provided with a first axle hole in which a rotating shaft is assembled, the other end of the locking body is provided with a second axle hole in which a reset shaft is assembled, and the locking reset piece is connected between the supporting assembly and the reset shaft.

[0025] A sliding groove is formed between the first axle hole and the second axle hole of the locking body, one side wall of the sliding groove forms a stepped surface to divide the sliding groove into an unlocking area and a locking area which are in communication with each other, the inner diameter of the locking area is larger than that of the unlocking area, and the locking area is located at one end close to the first axle hole.

[0026] Preferably, the electromagnetic driving mechanism is further provided, and the electromagnetic driving mechanism is in driving connection with the locking shaft to drive the interlocking assembly to switch from the unlocking state to the locking state.

[0027] Preferably, the electromagnetic driving mechanism comprises a magnetic yoke, a coil assembly, a moving iron core and a static iron core, the magnetic yoke surrounds the outside of the coil assembly, the moving iron core is slidingly arranged in the inside of the coil assembly, one end of the moving iron core is opposite to the static iron core, the other end of the moving iron core is provided with a push rod, and the push rod is connected with the locking shaft.

[0028] The utility model also provides a circuit breaker, including the shell, at least one contact system is provided in the shell, the contact system includes the pivot, movable contact and static contact, the pivot rotates the assembly in the shell, the movable contact is connected on the pivot, drives the movable contact to be close to or far from the static contact by the pivot, the shell still is assembled operation mechanism as above, and the connecting rod assembly is driven connection with the pivot.

[0029] Furthermore, the operating component is located inside the housing, the housing has a manual operation hole, the operating part of the operating component is located inside the manual operation hole, and the end of the operating part is flush with the outer surface of the housing.

[0030] Furthermore, a tripping spring is also provided inside the housing, which is connected between the rotating shaft and the housing, and provides tripping driving force to the rotating shaft.

[0031] Furthermore, the housing is also equipped with an electromagnetic instantaneous trip unit and / or a magnetic flux trip unit, which triggers the traction rod to rotate and release the limit engagement with the interlocking components.

[0032] The operating mechanism and circuit breaker of this utility model realize manual opening and closing operations by configuring a manual operating component. The manual operating component is operated by an operating part that rotates along its own axis, which occupies little space and is convenient to operate. The sliding part can directly cooperate with the traction rod, which has the advantage of strong cooperation stability. At the same time, the interlocking component, the traction rod and the manual operating component are all configured on the support component, which is conducive to forming a modular structure and facilitating assembly.

[0033] In particular, the slider is equipped with a trigger part, and the movement trajectory of the trigger part is a straight line, which has the advantage of occupying little space.

[0034] Furthermore, the interlocking components, including the traction rod, locking reset component, locking component, and locking shaft, work together to lock the interlocking assembly in the locked state, offering advantages such as simplicity and stable operation.

[0035] In addition, the guide grooves of the support components restrict the movement trajectory of the slider and the locking shaft, avoiding unnecessary shaking and improving the overall stability of the mechanism.

[0036] In addition, the electromagnetic drive mechanism drives the interlocking components to switch from the unlocked state to the locked state, which improves the closing speed.

[0037] In addition, the rotatable connection between the traction rod and the support assembly has the advantages of simple structure, convenient installation and stable fit. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the circuit breaker of this utility model;

[0039] Figure 2 This is a schematic cross-section of the circuit breaker of this utility model. Figure 1 ;

[0040] Figure 3 This is a schematic cross-section of the circuit breaker of this utility model. Figure 2 ;

[0041] Figure 4 is the structure schematic view of the operating mechanism and the contact system in the closing state of the utility model;

[0042] Figure 5 is the structure schematic view of the locking shaft in the locking area of the utility model;

[0043] Figure 6 is the structure schematic view of the operating mechanism and the contact system in the opening state of the utility model;

[0044] Figure 7 is the structure schematic view of the locking shaft in the unlocking area of the utility model;

[0045] Figure 8 is the cooperation schematic view of the operating mechanism and the contact system of the utility model;

[0046] Figure 9 is the structure schematic view of the operating mechanism of the utility model (not containing the supporting assembly);

[0047] Figure 10 is the structure schematic view of the operating mechanism of the utility model (not containing the electromagnetic driving mechanism);

[0048] Figure 11 is the structure schematic view of the manual operating assembly of the utility model;

[0049] Figure 12 is the exploded schematic view of the manual operating assembly of the utility model;

[0050] Figure 13 is the structure schematic view of the locking piece, the connecting rod assembly and the traction rod of the utility model Figure 1 ;

[0051] Figure 14 is the structure schematic view of the locking piece, the connecting rod assembly and the traction rod of the utility model Figure 2 ;

[0052] Figure 15 is the structure schematic view of the operating piece of the utility model;

[0053] Figure 16 is the structure schematic view of the sliding piece of the utility model;

[0054] Figure 17 is the structure schematic view of the side plate of the utility model;

[0055] Figure 18 is the structure schematic view of the mounting plate of the utility model;

[0056] Figure 19 is the structure schematic view of the locking piece of the utility model;

[0057] Figure 20 is the structure schematic view of the traction rod in the utility model, and

[0058] Figure 21 is the structure schematic view of the push rod in the utility model, and

[0059] Figure 22 is the structure schematic view of the rotating shaft in the utility model, and

[0060] The reference numerals in the drawing include: 1-support assembly, 11-side plate, 111-first guide groove, 112-second guide groove, 113-matching part, 12-mounting plate, 121-operation hole, 2-interlocking assembly, 21-locking piece, 210-slotted guide, 2101-locking area, 2102-unlocking area, 211-first shaft hole, 212-second shaft hole, 213-rotation shaft, 214-reset shaft, 22-locking shaft, 23-locking reset piece, 3-traction rod, 31-matching groove, 321-manual opening and closing part, 322-first opening and closing part, 323-second opening and closing part, 33-locking part, 4-manual operation assembly, 41-operation piece, 411-operation part, 412-body, 413-driving shaft, 42-sliding piece, 420-U-shaped body, 421-driving groove, 422-triggering part, 43-guide shaft, 5-electromagnetic driving mechanism, 51-coil assembly, 52-push rod, 6-linkage assembly, 7-housing, 81-rotating shaft, 811-linkage connecting part, 812-opening and closing pulling part, 82-moving contact, 83-opening and closing spring, 91-electromagnetic instantaneous release, 92-magnetic flux release. DETAILED DESCRIPTION

[0061] The embodiments given below in conjunction with the drawings further illustrate the specific implementation manners of the utility model. The protection scope of the utility model is not limited to the description of the following embodiments.

[0062] As shown in the drawings, Figures 1-3 The circuit breaker includes a housing 7, an operating mechanism and at least one circuit breaker pole are arranged in the housing 7, each circuit breaker pole includes a pair of wiring terminals, a contact system is connected between the pair of wiring terminals, the contact system includes a rotating shaft 81, a moving contact 82 and a static contact, the rotating shaft 81 is rotatably assembled in the housing 7, the moving contact 82 is assembled on the rotating shaft 81, the moving contact 82 is driven by the rotating shaft 81 to contact or separate from the static contact, so as to connect or disconnect the main line of each circuit breaker pole, and an arc extinguishing system is further arranged on one side of the contact system, and the arc extinguishing system is used for cooperating to extinguish the electric arc generated by the contact system.

[0063] Specifically, as shown in Figs. 4 and 8, the operating mechanism comprises a support assembly 1, the support assembly 1 is equipped with an interlocking assembly 2, the interlocking assembly 2 is switched between a locked state and an unlocked state, that is, when closing, the interlocking assembly 2 is in the locked state, when opening, the interlocking assembly 2 is in the unlocked state, the interlocking assembly 2 is connected with a connecting rod assembly 6 for driving the rotation of the rotating shaft 81, along with the state switching of the interlocking assembly 2, the connecting rod assembly 6 is driven to rotate for opening and closing; the operating mechanism further comprises a traction rod 3, the traction rod 3 is rotatably assembled on one side of the support assembly 1 and adjacent to the interlocking assembly 2, preferably, the traction rod 3 is assembled on the support assembly 1, which is beneficial to form a modular structure of the operating mechanism and facilitate assembly, when the traction rod 3 is driven to rotate for opening, the interlocking assembly 2 is triggered from the locked state to the unlocked state by the traction rod 3, thereby driving the rotating shaft 81 to rotate for opening, so that the contact mechanism is opened and powered off.

[0064] Further, at least one accessory module can be further configured in the shell 7, the accessory module cooperates with the traction rod 3 for triggering the circuit breaker to be powered off, the accessory module has one or more than two functional units, provides additional functional units for the circuit breaker, meets different use requirements of the circuit breaker, and has a wide range of applications; the accessory module can be a remote control functional unit, for example, a magnetic flux release 92, an electromagnetic instantaneous release 91, etc., at this time, the accessory module is connected with the control module, a controller of the control module outputs a control signal to drive the accessory module to act, thereby driving the traction rod 3 to rotate, wherein the control module can be configured in the shell 7 or be another control device.

[0065] As Figures 2-14 The improvement of the present application is that the locked state of the interlocking assembly 2 is limited and locked by the traction rod 3, after the traction rod 3 for opening is rotated and the interlocking assembly 2 is released from the limited locking, the interlocking assembly 2 is switched to the unlocked state, the support assembly 1 is further equipped with a manual operating assembly 4, the manual operating assembly 4 comprises an operating piece 41 and a sliding piece 42, the operating piece 41 is rotated along the axial direction of itself for driving the sliding piece 42 to move between a closing position and an opening position, the sliding piece 42 moves to the closing position for driving the interlocking assembly 2 to switch to the locked state, the sliding piece 42 moves to the opening position for driving the traction rod 3 to rotate for opening, and the interlocking assembly 2 is switched to the unlocked state after being released from the limited cooperation with the traction rod 3.

[0066] In this way, the manual opening and closing operation is realized by configuring the manual operating assembly 4, the manual operating assembly 4 is operated by the operating piece 41 which is rotated along the axial direction of itself, has a small occupied space and is convenient to operate, the sliding piece 42 can be directly cooperated with the traction rod 3 and has the advantage of strong cooperation stability, and the interlocking assembly 2, the traction rod 3 and the manual operating assembly 4 are all configured on the support assembly 1, which is beneficial to form a modular structure and facilitate assembly.

[0067] Specifically, the sliding member 42 moves along a straight line, the sliding member 42 is provided with a trigger portion 422, and the moving track of the trigger portion 422 is also a straight line. The trigger portion 422 drives the interlocking assembly 2 to switch from the unlocked state to the locked state, or drives the drawbar 3 to rotate to the open position. The drawbar 3 in the open position is out of the limiting cooperation with the interlocking assembly 2 in the locked state, and then the interlocking assembly 2 switches from the locked state to the unlocked state. That is, in the process that the sliding member 42 moves to the closed position, the trigger portion 422 drives the interlocking assembly 2 to switch from the unlocked state to the locked state. When the sliding member 42 moves to the open position, the trigger portion 422 drives the drawbar 3 to rotate to the open position. The drawbar 3 in the open position is out of the limiting cooperation with the interlocking assembly 2 in the locked state, so that the interlocking assembly 2 switches to the unlocked state.

[0068] As shown in Figures 4-10 , 13 and 14, the interlocking assembly 2 comprises a locking member 21 and a locking shaft 22. The locking member 21 is rotatably arranged on the support assembly 1. The locking shaft 22 is in sliding cooperation with the locking member 21 and is used to drive the locking member 21 to rotate from the unlocked position to the locked position. The linkage assembly 6 is connected to the locking shaft 22. Preferably, the locking member 21 is provided with a sliding groove 210. The sliding groove 210 comprises a locking area 2101 and an unlocking area 2102 which are in communication with each other. The locking shaft 22 slides along the sliding groove 210. The locking shaft 22 is located on the moving track of the trigger portion 422. When the locking shaft 22 moves from the unlocking area 2102 to the locking area 2101, the locking member 21 rotates from the unlocked position to the locked position. The locking member 21 in the locked position is in limiting cooperation with the drawbar 3. At this time, the drawbar 3 is used to limit the interlocking assembly 2 in the locked state. That is, the locking portion 33 of the drawbar 3 is in limiting cooperation with the locking member 21 to limit the locking member 21 from rotating. When the locking member 21 rotates from the locked position to the unlocked position, the locking shaft 22 moves from the locking area 2101 to the unlocking area 2102.

[0069] Further, as shown in Figures 2-5 and 8, the interlocking assembly 2 further comprises a locking reset member 23. The locking reset member 23 switches between a first state and a second state with the rotation of the locking member 21. When the drawbar 3 locks the interlocking assembly 2 in the locked state, the locking reset member 23 is in the first state, and the locking member 21 is in the locked position. The locking member 21 is in a stable state under the combined action of the limiting of the drawbar 3 and the locking reset member 23, so that the interlocking assembly 2 is locked by the drawbar 3 in the locked state. When the interlocking assembly 2 switches to the unlocked state, the locking reset member 23 switches to the second state, and the locking member 21 is in the unlocked position. The locking member 21 is out of the limiting lock with the drawbar 3.

[0070] As shown in Figures 4-10As shown in Figures 13, 14, and 20, the traction rod 3 is rotatably mounted on the support assembly 1. The traction rod 3 includes a locking part 33 and at least one opening part. The locking part 33 is locked to the interlocking assembly 2 in the locked state. During the movement of the sliding member 42 towards the opening position, the trigger part 422 pushes one of the opening parts to make the traction rod 3 rotate to open, thereby releasing the locking limit between the traction rod 3 and the interlocking assembly 2. The interlocking assembly 2 switches to the unlocked state. The interlocking assembly 2 in the locked state is locked by the mutual cooperation between the traction rod 3, the locking reset member 23, the locking member 21, and the locking shaft 22. It has the advantages of simple structure and stable cooperation.

[0071] Preferred, such as Figure 8 , 17 As shown, the support component 1 is also provided with a guide groove, which restricts the movement trajectory of the slider 42 and / or the locking shaft 22, thereby preventing the slider 42 and the locking shaft 22 from deviating during movement. Of course, a guide shaft 43 can be provided on the slider 42, which slides in conjunction with the guide groove, or the edge of the slider 42 slides in conjunction with the guide groove.

[0072] In addition, such as Figures 2-9 As shown, the operating mechanism also includes an electromagnetic drive mechanism 5, which is driven by the locking shaft 22. The electromagnetic drive mechanism 5 drives the interlocking component 2 to switch from the unlocked state to the locked state, which helps to improve the closing speed of the operating mechanism.

[0073] Combination Figures 2-21 A specific embodiment of an operating mechanism is provided.

[0074] like Figures 2-9 As shown, the operating mechanism includes a support assembly 1, an interlocking assembly 2, and a traction rod 3. The interlocking assembly 2 includes a pair of spaced-apart side plates 11. The interlocking assembly 2 and the manual operation assembly 4 are assembled between the pair of side plates 11. The traction rod 3 is assembled on the edge of the pair of side plates 11 and is adjacent to the interlocking assembly 2 and the manual operation assembly 4. The interlocking assembly 2 switches between a locked state and an unlocked state. When the interlocking assembly 2 is in the locked state, the traction rod 3 is locked to the interlocking assembly 2. When the traction rod 3 is driven to rotate for opening, the traction rod 3 is released from the lock and the interlocking assembly 2, so that the interlocking assembly 2 switches from the locked state to the unlocked state.

[0075] Specifically, such as Figures 2-10As shown in Figures 13 and 14, the interlocking assembly 2 includes a locking member 21, a locking shaft 22, and a locking reset member 23. One end of the locking member 21 is rotatably mounted between a pair of side plates 11, and the other end of the locking member 21 is adjacent to the traction rod 3. The locking member 21 rotates between the unlocked position and the locked position. When the locking member 21 rotates to the locked position, the traction rod 3 is limited to the locking member 21. A groove 210 is provided in the middle of the locking member 21. The locking shaft 22 is slidably engaged with the groove 210 to drive the locking member 21 from the unlocked position to the locked position. In the figure, the groove 210 includes a locking area 2101 and an unlocking area 2102 that are interconnected. The locking reset member 23 is connected between the locking member 21 and the support assembly 1. As the locking member 21 rotates, the locking reset member 23 undergoes elastic deformation and switches between a first state and a second state.

[0076] like Figure 4 , 5 As shown, when the interlocking assembly 2 is in the locked state, the locking member 21 rotates to the locked position, the locking shaft 22 is located in the locking area 2101, and the locking reset member 23 is in the first state. At this time, the traction rod 3 and the locking member 21 cooperate to lock the interlocking assembly 2. That is, the locking member 21 is in a locked balance state under the joint cooperation of the locking reset member 23, the locking shaft 22 and the traction rod 3.

[0077] like Figure 6 , 7 As shown, when the interlocking assembly 2 is in the unlocked state, the locking member 21 rotates to the unlocked position, the locking shaft 22 is located in the unlocked area 2102, and the locking reset member 23 is in the second state. At this time, the traction rod 3 separates from the locking member 21 to release the lock on the interlocking assembly 2. It can also be understood that the locking member 21 is in an unlocked balanced state under the joint cooperation of the locking reset member 23 and the locking shaft 22.

[0078] Combination Figures 2-10 13, 14 and 19 provide an interlocking component 2 for use in this embodiment.

[0079] like Figures 2-10 As shown, the interlocking assembly 2 includes a locking element 21, a locking shaft 22, and a locking reset element 23. The locking element 21 includes a locking body. Figure 19In the middle, the locking body is a double-layer plate structure, one end of the locking body is provided with a first shaft hole 211, a rotating shaft 213 is assembled in the first shaft hole 211, the locking piece 21 is rotatably assembled on the support assembly 1 through the rotating shaft 213, that is, the rotating shaft 213 is rotatably supported between the pair of side plates 11, the other end of the locking body is provided with a second shaft hole 212, a reset shaft 214 is assembled in the second shaft hole 212, the locking reset piece 23 is a section of tension spring, one end of the locking reset piece 23 is connected to the reset shaft 214, the other end of the locking reset piece 23 is connected to the support assembly 1, or the other end of the locking reset piece 23 can also be connected to the shell 7; a sliding groove 210 is formed between the first shaft hole 211 and the second shaft hole 212, one side wall of the sliding groove 210 forms a stepped surface, so that the sliding groove 210 is divided into an unlocking area 2102 and a locking area 2101 which are in communication with each other, the locking area 2101 is closer to one end of the first shaft hole 211, the inner diameter of the locking area 2101 is greater than that of the unlocking area 2102, in the figure, the inner diameter of the unlocking area 2102 is slightly greater than the outer diameter of the locking shaft 22, so that the opposite sides of the locking shaft 22 are respectively in sliding fit with the two sides of the unlocking area 2102, the inner diameter of the locking area 2101 is greater than that of the unlocking area 2102, the stepped surface at the junction of the unlocking area 2102 and the locking area 2101 is formed with a rounded corner, facilitating the movement of the locking shaft 22 between the unlocking area 2102 and the locking area 2101.

[0080] As shown in Figure 6 , 7 , when the locking piece 21 is rotated to the unlocking position, the end of the locking piece 21 away from the rotating shaft 213 is separated from the traction rod 3 and is in a state of releasing the limiting fit, the locking reset piece 23 is in the second state, the locking shaft 22 is located in the unlocking area 2102, and the locking shaft 22 abuts against the end of the unlocking area 2102 away from the locking area 2101, at this time, the interlocking assembly 2 is in the unlocking state;

[0081] In the process of moving the locking shaft 22 from the unlocking area 2102 to the locking area 2101, the locking piece 21 is rotated from the unlocking position to the locking position, the locking reset piece 23 is elastically deformed with the rotation of the locking piece 21, and gradually changes from the second state to the first state, and the locking shaft 22 is always close to the lower edge of the locking area 2101 under the elastic action of the locking reset piece 23,

[0082] As shown in Figure 4 , 5As shown, when the locking member 21 is rotated to the locked position, the locking reset member 23 is rotated to the first state, and the locking shaft 22 is located in the locking area 2101, so that the locking shaft 22 abuts against the stepped surface of the locking area 2101 near the unlocking area 2102. At this time, the interlocking assembly 2 is in the locked state, and the traction rod 3 is limited to the end of the locking member 21 away from the rotating shaft 213, so that the locking shaft 22 cannot fall into the unlocking area 2102 under the joint cooperation of the locking reset member 23 and the traction rod 3. That is, the interlocking assembly 2 in the locked state is locked by the traction rod 3.

[0083] When the traction rod 3 is driven to open the circuit and rotate, it separates from the locking member 21 and releases the limit. The locking reset member 23 switches from the first state to the second state, causing the locking member 21 to unlock and rotate around the rotating shaft 213. The locking shaft 22 falls from the locking area 2101 into the unlocking area 2102.

[0084] Combination Figure 2 , 4 -10, 13, 14 and 20 provide a traction rod 3 for use in this embodiment.

[0085] like Figure 20 As shown, the traction rod 3 has a strip-shaped structure. Two spaced mating grooves 31 are opened in the middle of the traction rod 3. Each side plate 11 has a protruding mating part 113 on its edge. Each mating part 113 is rotatably inserted into a mating groove 31, so that the traction rod 3 rotates around the mating part 113 as the rotation axis. The middle of the traction rod 3 has multiple tripping parts. In the figure, a first tripping part 322 is provided near the end on one side of the traction rod 3. The first tripping part 322 has an L-shaped plate structure. The end of the first tripping part 322 extends outward along the axial direction of the traction rod 3. The magnetic flux trip device 92 set in the housing 7 triggers the first tripping part 322 to make the traction rod 3 trip and rotate. A second tripping part 323 is provided on the other side of the traction rod 3. The second tripping part 323 has a rectangular plate structure and is used to cooperate with the electromagnetic instantaneous trip device 91 set in the housing 7. The number of second tripping parts 323 matches the number of electromagnetic instantaneous trip devices 91.

[0086] A locking part 33 is also provided in the middle of one side of the traction rod 3. The locking part 33 and the first tripping part 322 are located on the same side of the traction rod 3. In the figure, the locking part 33 corresponds to the two mating grooves 31. The locking part 33 includes a pair of spaced support plates. A rectangular plate is connected between the pair of support plates. The rectangular plate closes the space between the pair of support plates. A shaft-shaped body is assembled above the rectangular plate. When the interlocking assembly 2 is in the locked state, the end of the locking member 21 away from the rotating shaft 213 is limited and abutted against the plate-shaped body and the shaft-shaped body.

[0087] Furthermore, the traction lever 3 is also equipped with a manual tripping section 321. Figure 20In the middle, the manual tripping part 321, the locking part 33, and the first tripping part 322 are located on the same side of the traction rod 3. The manual tripping part 321 is adjacent to the locking part 33, and the manual tripping part 321 is a strip plate structure.

[0088] In this embodiment, as Figures 2-12 As shown in Figures 15, 17, and 18, the operating mechanism also includes a manual operating assembly 4 mounted on the support assembly 1. The manual operating assembly 4 includes an operating member 41 and a sliding member 42. The operating member 41 rotates about its own axis, and the sliding member 42 is slidably mounted between a pair of side plates 11. The sliding member 42 is provided with a trigger part 422. The operating member 41 is rotatably mounted between the pair of side plates 11. Rotating the operating member 41 drives the sliding member 42 to move along a straight line between the closed and open positions, as shown in Figures 15, 17, and 18. Figure 5 As shown, when the sliding member 42 moves to the closed position, the trigger unit 422 drives the interlocking assembly 2 to switch from the unlocked state to the locked state, as follows: Figure 7 As shown, when the sliding member 42 moves to the open position, the triggering part 422 can drive the traction rod 3 to rotate open. That is, the triggering part 422 pushes the manual opening part 321 to make the traction rod 3 rotate open.

[0089] The operating component 41 includes an operating part 411 and a body 412 that are fixedly connected. One side of the body 412 protrudes outward to form a driving part. The driving part can be operated by a tool such as a wrench to rotate around its own axis. A driving shaft 413 is connected to the driving part. The driving shaft 413 and the operating part 411 are located on opposite sides of the body 412, and the axis of the operating part 411 is parallel to the axis of the driving shaft 413. Rotating the operating part 411 causes the driving part to rotate around the axis of the operating part 411. The driving shaft 413 drives the sliding member 42 to move between the closed position and the open position.

[0090] Combination Figures 4-7 9-12 and 16 provide a specific structure for the slider 42 applied in this embodiment, such as Figure 16 As shown, the sliding member 42 includes a U-shaped body 420, which is integrally bent from a straight plate structure. The U-shaped body 420 includes a pair of spaced-apart sidewalls connected by a connecting wall. Each sidewall has a shaft hole, and a guide shaft 43 is fitted into each shaft hole. The guide shaft 43 slides in cooperation with the side plate 11 in the support assembly 1. At the corner of each sidewall, a strip-shaped trigger portion 422 extends in the direction away from the connecting wall, as shown. Figure 5 As shown, when the sliding member 42 is driven to move towards the closed position, the trigger part 422 pushes the locking shaft 22 in the interlock assembly 2 from the unlocked position to the locked position, as... Figure 7As shown, when the sliding member 42 is driven to move to the open position, the trigger part 422 pushes the manual opening part 321 of the traction rod 3, causing the traction rod 3 to rotate open; the connecting wall of the U-shaped body 420 is provided with a drive groove 421 in the middle, and the drive shaft 413 between the operating member 41 and the sliding member 42 is provided through the drive groove 421, so that the operating member 41 drives the sliding member 42 to move through the drive shaft 413.

[0091] In this embodiment, as Figure 8 , 17 As shown in Figure 18, a pair of side plates 11 in the support assembly 1 are provided with guide grooves, which limit the movement trajectory of the sliding member 42 (guide shaft 43) and the locking shaft 22, as shown in Figure 18. Figure 17 As shown, each side plate 11 has a first guide groove 111 and a second guide groove 112 that are parallel to each other in the middle. The guide shaft 43 is slidably engaged with the first guide groove 111, and the locking shaft 22 is slidably engaged with the second guide groove 112. Figure 17 In this design, the length of the first guide groove 111 is greater than the length of the second guide groove 112. The second guide groove 112 is located below the first guide groove 111. A shaft hole is provided on the side plate 11 outside one end of the second guide groove 112, which is used for the rotating shaft 213 to be rotatably assembled. A protruding mating part 113 extends from one corner of the side plate 11, and the end of the mating part 113 is blunt and rounded to facilitate rotatable insertion with the mating groove 31. Furthermore, a plurality of mounting parts are provided on the edges of the pair of side plates 11, each mounting part extending in a direction perpendicular to the surface of the side plate 11, for fixing the side plate 11 inside the housing 7.

[0092] like Figure 18 As shown, the support assembly 1 also includes a mounting plate 12, which is fixed to a pair of side plates 11. In this embodiment, the mounting plate 12 is fixed to the pair of side plates 11 by four mounting parts. An operation hole 121 is provided in the middle of the mounting plate 12. The driving part of the operating member 41 passes through the operation hole 121, so that the sliding member 42 is disposed between the mounting plate 12 and the locking member 21. The axial direction of the operating member 41 is perpendicular to the plate surface of the mounting plate 12.

[0093] Preferred, such as Figure 2 , 4 As shown in -9 and 22, the operating mechanism also includes an electromagnetic drive mechanism 5, which is located outside the support component 1. The electromagnetic drive mechanism 5 is driven by the locking shaft 22 to drive the interlocking component 2 to switch from the unlocked state to the locked state, thereby realizing automatic closing.

[0094] The electromagnetic drive mechanism 5 can employ existing technologies, such as... Figure 2As shown, the electromagnetic drive mechanism 5 includes a magnetic yoke, a coil assembly 51, a moving iron core, and a stationary iron core. The magnetic yoke surrounds the outside of the coil assembly 51, and the moving iron core is slidably disposed inside the coil assembly 51. One end of the moving iron core is spaced apart from the stationary iron core, and the other end of the moving iron core is provided with a push rod 52. The other end of the push rod 52 is connected to the locking shaft 22.

[0095] Combination Figure 4 , 5 9 and 21 provide a push rod 52 structure applicable to this embodiment.

[0096] like Figure 21 As shown, the push rod 52 includes two spaced plates. One end of each plate is provided with a shaft hole through which the locking shaft 22 passes. The ends of the two plates away from the shaft hole are connected together to form a connecting end. The opposite two sides of the connecting end extend outward to form a pair of spaced and opposite connecting plates. One end of the moving iron core is inserted between the pair of connecting plates. Each connecting plate is provided with a fixing hole. Fasteners are provided in the fixing holes for connection with the moving iron core.

[0097] Combination Figures 1-3 22 provides a specific structure for a circuit breaker.

[0098] like Figure 1 As shown, the circuit breaker includes a housing 7. Typically, the housing 7 consists of a base and a cover that fits onto the base. An operating mechanism and at least one circuit breaker pole are provided inside the housing 7. The operating member 41 in the operating mechanism is located inside the housing 7. The housing 7 has a manual operating hole 121. The operating part 411 of the operating member 41 corresponds to the manual operating hole 121. In this embodiment, the operating part 411 is located inside the manual operating hole 121, and the end of the operating part 411 is flush with the outer surface of the housing 7.

[0099] In this embodiment, three circuit breaker poles are provided inside the housing 7. The circuit breaker poles are located in the base. Preferably, a partition is provided inside the base, and two adjacent circuit breaker poles are separated by the partition. The operating mechanism is located between the circuit breaker poles and the cover. The traction rod 3 spans all the circuit breaker poles, and the second opening part 323 of the traction rod 3 corresponds to one circuit breaker pole.

[0100] The structure of each circuit breaker pole can adopt existing technology, namely, each circuit breaker pole includes a pair of spaced-apart terminals, each terminal is located at one end of the base and corresponds to the wiring port of the base, and a contact system is connected between the pair of terminals. The contact system includes a rotating shaft 81, a moving contact 82, and a stationary contact, wherein the rotating shaft 81 is rotatably mounted in the housing 7, one end of the moving contact 82 is connected to the rotating shaft 81, and the other end is spaced apart from the stationary contact, and the rotating shaft 81 drives the moving contact 82 to move closer to or away from the stationary contact, such as... Figure 21As shown, the three circuit breaker poles' rotating shafts 81 are an integral structure. The rotating shaft 81 located in the middle position has a protruding connecting rod connection part 811, and the connecting rod assembly 6 of the operating mechanism is connected to the connecting rod connection part 811. The rotating shaft 81 located on the side position has a protruding tripping pull part 812, and a tripping spring 83 is connected between the tripping pull part 812 and the base. Figure 2 In the circuit, the opening spring 83 is a tension spring. The opening spring 83 works in conjunction with the rotating shaft 81 to pull the moving contact 82 away from the stationary contact. When the rotating shaft 81 rotates and causes the moving contact 82 to contact the stationary contact, the opening spring 83 stores energy. After the interlocking assembly 2 switches to the unlocked state, the opening spring 83 releases energy. An arc extinguishing system is also provided on one side of the contact system. The arc extinguishing system can adopt existing technology.

[0101] Furthermore, such as Figure 2 , 3 As shown, the housing 7 is also equipped with a control module and an accessory module. The control module includes a circuit board and a controller mounted on the circuit board. The housing 7 is also equipped with a current transformer and a zero-sequence transformer for feeding back current signals to the controller. The controller outputs control signals to the electromagnetic drive mechanism 5 and the accessory module according to the received current signals and control commands, so that the electromagnetic drive mechanism 5 and the accessory module can operate according to the control signals.

[0102] In this embodiment, the accessory module includes an electromagnetic instantaneous trip unit 91 and a magnetic flux trip unit 92. The electromagnetic instantaneous trip unit 91 and the magnetic flux trip unit 92 employ existing technology. The electromagnetic instantaneous trip unit 91 is disposed within each circuit breaker pole and connected to the main line of each circuit breaker pole. Figure 2 , 3 In the middle, the electromagnetic instantaneous trip unit 91 is set in the base, and the armature of the electromagnetic instantaneous trip unit 91 cooperates with the second opening part 323 of the traction rod 3; the magnetic flux trip unit 92 is set in the outer shell 7 near the cover, and the moving component of the magnetic flux trip unit 92 cooperates with the first opening part 322. Thus, the accessory module drives the traction rod 3 to open and rotate, so that the traction rod 3 is separated and unlocked from the interlocking component 2, thereby realizing the opening of the driving operating mechanism.

[0103] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0104] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An operating mechanism, comprising a support assembly (1), the support assembly (1) being equipped with an interlocking assembly (2) and a traction rod (3), the interlocking assembly (2) being switchable between a locked state and an unlocked state, the interlocking assembly (2) being connected to a linkage assembly (6), characterized in that: The interlocking assembly (2) is locked by the traction rod (3). After the traction rod (3) is released from the limit lock when the circuit breaker is turned, the interlocking assembly (2) switches to the unlocked state. The support assembly (1) is also equipped with a manual operation assembly (4). The manual operation assembly (4) includes an operating member (41) and a sliding member (42). The rotating operating member (41) rotates along its own axis to drive the sliding member (42) to move between the closed position and the open position. The sliding member (42) moves to the closed position to drive the interlock assembly (2) to switch to the locked state. The sliding member (42) moves to the open position to drive the traction rod (3) to open and rotate. After the interlock assembly (2) is released from the limit engagement with the traction rod (3), it switches to the unlocked state.

2. The operating mechanism according to claim 1, characterized in that: The sliding member (42) is provided with a trigger part (422). The movement trajectory of the trigger part (422) is a straight line. The trigger part (422) drives the interlocking component (2) to switch from the unlocked state to the locked state. Alternatively, the trigger part (422) drives the traction rod (3) to open and rotate to release the limiting cooperation with the interlocking component (2).

3. The operating mechanism according to claim 2, characterized in that: The traction rod (3) includes a locking part (33) and at least one opening part. The locking part (33) is locked to the interlocking assembly (2) in the locked state. The trigger part (422) pushes one of the opening parts to make the traction rod (3) open and rotate to release the interlocking assembly (2) from the limit.

4. The operating mechanism according to claim 2, characterized in that: The interlocking assembly (2) includes a locking element (21) and a locking shaft (22). The locking element (21) is rotatably mounted on the support assembly (1). The locking element (21) is provided with a sliding groove (210) for sliding engagement with the locking shaft (22). The connecting rod assembly (6) is connected to the locking shaft (22). The sliding groove (210) includes a locking area (2101) and an unlocking area (2102) that are interconnected. The locking shaft (22) moves from the unlocking region (2102) to the locking region (2101), and the locking member (21) rotates from the unlocking position to the locking position. The locking element (21) rotates from the locked position to the unlocked position, and the locking shaft (22) moves from the locking area (2101) to the unlocking area (2102). The locking shaft (22) is located on the closing movement trajectory of the trigger part (422), and the locking member (21) in the locking position is in a limiting cooperation with the traction rod (3).

5. The operating mechanism according to claim 4, characterized in that: The locking member (21) is connected to a locking reset member (23). The locking reset member (23) switches between a first state and a second state as the locking member (21) rotates. When the traction rod (3) locks the interlocking assembly (2) in the locked state, the locking reset member (23) is in the first state. When the interlocking assembly (2) switches to the unlocked state, the locking reset member (23) switches to the second state.

6. The operating mechanism according to claim 5, characterized in that: The support assembly (1) includes a pair of spaced-apart side plates (11), the interlocking assembly (2) and the manual operation assembly (4) are disposed between the pair of side plates (11), the sliding member (42) and the locking shaft (22) are slidably engaged with the side plates (11), the operating member (41) is rotatably disposed between the pair of side plates (11), and a drive shaft (413) is connected between the sliding member (42) and the operating member (41), the axis of the drive shaft (413) being offset from the axis of the operating member (41).

7. The operating mechanism according to claim 6, characterized in that: The support assembly (1) also includes a mounting plate (12), which is fixed to a pair of side plates (11) and has an operation hole (121). The operating member (41) is rotatably assembled between the mounting plate (12) and the sliding member (42), and the operating part (411) of the operating member (41) protrudes from the operation hole (121).

8. The operating mechanism according to claim 6, characterized in that: The side plate (11) is provided with a first guide groove (111) and a second guide groove (112) that are parallel to each other. The sliding member (42) is provided with a guide shaft (43). The guide shaft (43) and the locking shaft (22) are respectively slidably engaged with the first guide groove (111) and the second guide groove (112).

9. The operating mechanism according to claim 6, characterized in that: The side plate (11) is provided with a protruding mating part (113), and the traction rod (3) is provided with a mating groove (31). The mating part (113) is inserted into the mating groove (31) so that the traction rod (3) rotates around the mating part (113).

10. The operating mechanism according to claim 6, characterized in that: The operating component (41) includes an operating part (411) and a body (412) that are fixedly connected. The operating part (411) is formed by one side of the body (412) protruding outward. The driving part is connected to a driving shaft (413). The driving shaft (413) and the operating part (411) are located on opposite sides of the body (412), and the axis of the operating part (411) is parallel to the axis of the driving shaft (413).

11. The operating mechanism according to claim 6, characterized in that: The sliding member (42) includes a U-shaped body (420), the connecting wall of the U-shaped body (420) is provided with a drive groove (421), the operating member (41) drives the sliding member (42) to move through the drive groove (421), the side wall of the U-shaped body (420) is provided with a shaft hole, a guide shaft (43) is assembled in the shaft hole, and the edge of the side wall of the U-shaped body (420) is provided with a protruding trigger part (422).

12. The operating mechanism according to claim 5, characterized in that: The locking component (21) includes a locking body. One end of the locking body has a first shaft hole (211) in which a rotating shaft (213) is fitted. The other end of the locking body has a second shaft hole (212) in which a reset shaft (214) is fitted. The locking reset component (23) is connected between the support assembly (1) and the reset shaft (214). The locking body between the first shaft hole (211) and the second shaft hole (212) has a sliding groove (210). One side wall of the sliding groove (210) forms a stepped surface, so that the sliding groove (210) is divided into an unlocking area (2102) and a locking area (2101) that are interconnected. The inner diameter of the locking area (2101) is larger than that of the unlocking area (2102), and the locking area (2101) is located at one end close to the first shaft hole (211).

13. The operating mechanism according to claim 5, characterized in that: It also includes an electromagnetic drive mechanism (5), which is driven to connect to the locking shaft (22), and drives the interlocking component (2) to switch from the unlocked state to the locked state.

14. The operating mechanism according to claim 13, characterized in that: The electromagnetic drive mechanism (5) includes a magnetic yoke, a coil assembly (51), a moving iron core and a stationary iron core. The magnetic yoke is arranged around the outside of the coil assembly (51). The moving iron core is slidably arranged inside the coil assembly (51). One end of the moving iron core is spaced apart from the stationary iron core. The other end of the moving iron core is provided with a push rod (52). The push rod (52) is connected to the locking shaft (22).

15. A circuit breaker, comprising a housing (7), wherein at least one contact system is disposed within the housing (7), the contact system comprising a rotating shaft (81), a moving contact (82), and a stationary contact, the rotating shaft (81) being rotatably mounted within the housing (7), the moving contact (82) being connected to the rotating shaft (81), and the rotating shaft (81) driving the moving contact (82) to move closer to or away from the stationary contact, characterized in that: The housing (7) is further equipped with an operating mechanism as described in any one of claims 1-14, wherein the linkage assembly (6) is driven to connect with the rotating shaft (81).

16. The circuit breaker according to claim 15, characterized in that: The operating component (41) is located inside the housing (7), and the housing (7) has a manual operation hole (121). The operating part (411) of the operating component (41) is located inside the manual operation hole (121), and the end of the operating part (411) is flush with the outer surface of the housing (7).

17. The circuit breaker according to claim 16, characterized in that: The outer casing (7) is also provided with a tripping spring (83), which is connected between the rotating shaft (81) and the outer casing (7). The tripping spring (83) provides tripping driving force to the rotating shaft (81).

18. The circuit breaker according to claim 17, characterized in that: The outer casing (7) is also provided with an electromagnetic instantaneous trip unit (91) and / or a magnetic flux trip unit (92), which triggers the traction rod (3) to rotate to release the limit engagement with the interlocking assembly (2).

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