Operating mechanism and circuit breaker

Abstract

The operating mechanism and the circuit breaker, 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 locked state and an unlocked state, the locked state of the interlocking assembly is locked by the traction rod, after the traction rod is unlocked by rotating and opening, the interlocking assembly is switched to the unlocked state, the manual operating assembly comprises an operating part and a sliding part, the operating part is rotated along the axial direction for driving the sliding part to move between a closing position and an opening position, the sliding part moves to the closing position for driving the interlocking assembly to switch to the locked state, the sliding part moves to the opening position for driving the traction rod to rotate and open, and the interlocking assembly is switched to the unlocked state after being unlocked by the traction rod. The manual operating assembly is configured to realize manual operation, the operating part of the manual operating assembly is operated along the axial direction, the occupied space is small, and the sliding part is directly matched with the traction rod, so that the assembly has the advantages of high matching stability.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and more specifically to an operating mechanism and a circuit breaker. Background Technology

[0002] In power distribution networks, circuit breakers are used to connect, disconnect, and carry rated operating current. They can reliably protect lines and equipment in the event of overload, short circuit, overvoltage, or undervoltage. In addition, circuit breakers also have the function of automatic reclosing after circuit breaker tripping due to residual current, undervoltage, or overvoltage faults.

[0003] In existing products, circuit breakers also have the function of reclosing; however, they have the following drawbacks: First, they lack manual operation components, making it impossible for the operating mechanism to manually open and close the circuit. Second, some circuit breakers are equipped with manual operation components, but the movement trajectory of these components is usually oscillating and requires indirect cooperation with the traction rod through the linkage assembly in the operating mechanism, resulting in a complex cooperation method, large space occupation, and poor stability. Third, the operating mechanism is equipped with a large number of linkage assemblies, which occupy a large space and is not conducive to forming a modular structure. Fourth, when the operating mechanism is driven by a motor and gear set to open and close the circuit, the relatively long output rotation of the motor and the transmission time of the gear set result in a long closing cycle and insufficient response. Summary of the Invention

[0004] The purpose of this invention is to overcome at least one defect of the prior art and to provide an operating mechanism and a circuit breaker.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention provides an operating mechanism, including a support assembly, which is equipped with an interlocking assembly and a traction rod. The interlocking assembly switches between a locked state and an unlocked state, and is connected to a linkage assembly.

[0007] The interlocking assembly is locked by a traction rod limit lock. After the traction rod, which rotates to open the circuit breaker, releases the limit lock from the interlocking assembly, the interlocking assembly switches to the unlocked state.

[0008] The support assembly is also equipped with a manual operation assembly, which includes an operating component and a sliding component. Rotating the operating component along its own axis drives the sliding component to move between the closed position and the open position. Moving the sliding component to the closed position drives the interlocking assembly to switch to the locked state. Moving the sliding component to the open position drives the traction rod to open and rotate. After the interlocking assembly with the traction rod is released from its limit position, it switches to the unlocked state.

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

[0010] Preferably, the traction rod includes a locking part and at least one opening part. The locking part is locked to the interlocking assembly in the locked state. The triggering part pushes one of the opening parts to make the traction rod open and rotate to release the interlocking assembly from the limit engagement.

[0011] Preferably, the interlocking assembly includes a locking member and a locking shaft. The locking member is rotatably mounted on the support assembly and has a groove for sliding engagement with the locking shaft. The linkage assembly is connected to the locking shaft, and the groove includes a locking area and an unlocking area that communicate with each other.

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

[0013] The locking element rotates from the locked position to the unlocked position, and the locking shaft moves from the locked area to the unlocked area.

[0014] The locking shaft is located on the closing movement trajectory of the trigger part, and the locking member in the locking position is engaged with the traction rod for limiting.

[0015] Preferably, the locking member is connected to a locking reset member.

[0016] The locking reset component switches between a first state and a second state as the locking component rotates.

[0017] When the traction rod locks the interlocking assembly in the locked state, the locking reset member is in the first state; when the interlocking assembly switches to the unlocked state, the locking reset member switches to the second state.

[0018] Preferably, the support assembly includes a pair of spaced-apart side plates, the interlocking assembly and the manual operation assembly are disposed between the pair of side plates, the sliding member and the locking shaft are slidably engaged with the side plates respectively, the operating member is rotatably disposed between the pair of side plates, and a drive shaft is connected between the sliding member and the operating member, the axis of the drive shaft being offset from the axis of the operating member.

[0019] Preferably, the support assembly further includes a mounting plate, which is fixed to a pair of side plates and has an operating hole. The operating component is rotatably assembled between the mounting plate and the sliding component, and the operating part of the operating component protrudes from the operating hole.

[0020] Preferably, the side plate is provided with a first guide groove and a second guide groove that are parallel to each other, and the sliding member is provided with a guide shaft, the guide shaft and the locking shaft being slidably engaged with the first guide groove and the second guide groove, respectively.

[0021] Preferably, the side plate has a protruding mating part, and the traction rod has a mating groove. The mating part is inserted into the mating groove, so that the traction rod can rotate around the mating part.

[0022] Preferably, the operating component includes an operating part and a body that are fixedly connected. One side of the body protrudes outward to form the operating part. The driving part is connected to a driving shaft. The driving shaft and the operating part are located on opposite sides of the body, and the axis of the operating part is parallel to the axis of the driving shaft.

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

[0024] Preferably, the locking element includes a locking body, one end of which has a first shaft hole in which a rotating shaft is fitted, and the other end of which has a second shaft hole in which a reset shaft is fitted. The locking reset element is connected between the support assembly and the reset shaft.

[0025] The locking body between the first shaft hole and the second shaft hole has a sliding groove. One side wall of the sliding groove forms a stepped surface, so that the sliding groove is divided into an unlocking area and a locking area that are interconnected. The inner diameter of the locking area is larger than that of the unlocking area, and the locking area is located at one end near the first shaft hole.

[0026] Preferably, it also includes an electromagnetic drive mechanism, which is driven to the locking shaft, and drives the interlocking component to switch from the unlocked state to the locked state.

[0027] Preferably, the electromagnetic drive mechanism includes a magnetic yoke, a coil assembly, a moving iron core, and a stationary iron core. The magnetic yoke is arranged around the outside of the coil assembly, and the moving iron core is slidably arranged inside the coil assembly. 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, which is connected to a locking shaft.

[0028] The present invention also provides a circuit breaker, including a housing, wherein at least one contact system is disposed within the housing, the contact system including a rotating shaft, a moving contact and a stationary contact, the rotating shaft being rotatably mounted within the housing, the moving contact being connected to the rotating shaft and driven by the rotating shaft to move closer to or away from the stationary contact, and the housing also being equipped with an operating mechanism as described above, wherein the linkage assembly is drivenly connected to the rotating shaft.

[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 the present invention 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 circuit breaker of the present invention;

[0039] Figure 2 This is a schematic cross-section of the circuit breaker of the present invention. Figure 1 ;

[0040] Figure 3 This is a schematic cross-section of the circuit breaker of the present invention. Figure 2 ;

[0041] Figure 4 This is a schematic diagram of the operating mechanism and contact system in the closed state of this invention;

[0042] Figure 5 This is a schematic diagram of the locking shaft in the locking region in this invention;

[0043] Figure 6 This is a schematic diagram of the operating mechanism and contact system in the tripping state of this invention;

[0044] Figure 7 This is a schematic diagram of the locking shaft in the unlocking area of ​​the present invention;

[0045] Figure 8 This is a schematic diagram of the cooperation between the operating mechanism and the contact system in this invention;

[0046] Figure 9 This is a schematic diagram of the operating mechanism in this invention (excluding supporting components);

[0047] Figure 10 This is a schematic diagram of the operating mechanism in this invention (excluding the electromagnetic drive mechanism);

[0048] Figure 11 This is a schematic diagram of the manual operation component in this invention;

[0049] Figure 12 This is an exploded view of the manual operation component in this invention;

[0050] Figure 13 This is a schematic diagram of the structure of the locking component, connecting rod assembly, and traction rod in this invention. Figure 1 ;

[0051] Figure 14 This is a schematic diagram of the structure of the locking component, connecting rod assembly, and traction rod in this invention. Figure 2 ;

[0052] Figure 15 This is a schematic diagram of the structure of the operating component in this invention;

[0053] Figure 16 This is a schematic diagram of the sliding component in this invention;

[0054] Figure 17 This is a schematic diagram of the side plate structure in this invention;

[0055] Figure 18 This is a schematic diagram of the mounting plate in this invention;

[0056] Figure 19 This is a schematic diagram of the locking component in this invention;

[0057] Figure 20This is a schematic diagram of the traction rod in this invention;

[0058] Figure 21 This is a schematic diagram of the push rod structure in this invention;

[0059] Figure 22 This is a schematic diagram of the structure of the rotating shaft in this invention;

[0060] The reference numerals in the attached drawings include: 1-support assembly, 11-side plate, 111-first guide groove, 112-second guide groove, 113-mating part, 12-mounting plate, 121-operating hole, 2-interlocking assembly, 21-locking element, 210-slide groove, 2101-locking area, 2102-unlocking area, 211-first shaft hole, 212-second shaft hole, 213-rotating shaft, 214-reset shaft, 22-locking shaft, 23-locking reset element, 3-traction rod, 31-mating groove, 321-manual tripping part, 322-first tripping part, 3 23-Second tripping section, 33-Locking section, 4-Manual operation assembly, 41-Operating component, 411-Operating section, 412-Body, 413-Drive shaft, 42-Sliding component, 420-U-shaped body, 421-Drive groove, 422-Trigger section, 43-Guide shaft, 5-Electromagnetic drive mechanism, 51-Coil assembly, 52-Push rod, 6-Linkage assembly, 7-Housing shell, 81-Rotating shaft, 811-Linkage connection section, 812-Tripping pull section, 82-Moving contact, 83-Tripping spring, 91-Electromagnetic instantaneous trip unit, 92-Magnetic flux trip unit. Detailed Implementation

[0061] The specific embodiments of the present invention are further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the description of the following embodiments.

[0062] like Figure 1-3 As shown, the circuit breaker includes a housing 7, within which an operating mechanism and at least one circuit breaker pole are provided. Each circuit breaker pole includes a pair of terminals, 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. The rotating shaft 81 is rotatably mounted inside the housing 7, and the moving contact 82 is mounted on the rotating shaft 81. The rotating shaft 81 drives the moving contact 82 to contact or separate from the stationary contact, thereby connecting or disconnecting the main line of each circuit breaker pole. An arc extinguishing system is also provided on one side of the contact system, which works in conjunction with the contact system to extinguish the arc generated by the disconnection of the contact system.

[0063] Specifically, referring to 4 and 8, the operating mechanism includes a support component 1, which is equipped with an interlocking component 2. The interlocking component 2 switches between a locked state and an unlocked state. That is, when closing, the interlocking component 2 is in a locked state, and when opening, the interlocking component 2 is in an unlocked state. The interlocking component 2 is connected to a connecting rod component 6 for driving the rotating shaft 81 to rotate. As the state of the interlocking component 2 switches, the connecting rod component 6 is driven to rotate for opening and closing. The operating mechanism also includes a traction rod 3, which is rotatably mounted on one side of the support component 1 and adjacent to the interlocking component 2. Preferably, the traction rod 3 is mounted on the support component 1, which facilitates the modular structure of the operating mechanism and makes assembly convenient. When the traction rod 3 is driven to rotate for opening, the traction rod 3 triggers the interlocking component 2 to switch from the locked state to the unlocked state, thereby driving the rotating shaft 81 to rotate for opening, causing the contact mechanism to open and disconnect the power.

[0064] Furthermore, at least one accessory module can be configured inside the housing 7. The accessory module works with the traction rod 3 to trigger the circuit breaker to trip and disconnect power. The accessory module has one or more functional units, providing additional functional units for the circuit breaker to meet different usage requirements and has a wide range of applications. The accessory module can be a remotely controlled functional unit, such as a magnetic flux trip unit 92 or an electromagnetic instantaneous trip unit 91. In this case, the accessory module is connected to the control module, and the controller of the control module outputs a control signal to drive its action, thereby driving the traction rod 3 to rotate. The control module can be configured inside the housing 7 or it can be another control device.

[0065] like Figure 2-14 The improvement of this application is that the locking state of the interlocking component 2 is limited and locked by the traction rod 3. After the traction rod 3, which rotates to open, is released from the limit lock of the interlocking component 2, the interlocking component 2 switches to the unlocked state. The support component 1 is also equipped with a manual operation component 4. The manual operation component 4 includes an operating member 41 and a sliding member 42. Rotating the operating member 41 along its own axis is used 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 interlocking component 2 to switch to the locked state. The sliding member 42 moves to the open position to drive the traction rod 3 to rotate to open. After the interlocking component 2 is released from the limit lock of the traction rod 3, it switches to the unlocked state.

[0066] Thus, manual opening and closing operations are achieved by configuring the manual operation component 4. The manual operation component 4 is operated by the operating part 41 that rotates along its own axis. It occupies little space and is easy to operate. The sliding part 42 can directly cooperate with the traction rod 3, which has the advantage of strong cooperation stability. At the same time, the interlocking component 2, the traction rod 3 and the manual operation component 4 are all configured on the support component 1, which is conducive to forming a modular structure and is easy to assemble.

[0067] Specifically, the sliding member 42 moves in a straight line. The sliding member 42 is equipped with a trigger part 422, and the corresponding movement trajectory of the trigger part 422 is also 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 rotate open. The traction rod 3 rotating open releases the limit engagement with the interlocking component 2 in the locked state. Subsequently, the interlocking component 2 switches from the locked state to the unlocked state. That is, during the movement of the sliding member 42 towards the closed position, the trigger part 422 drives the interlocking component 2 to switch from the unlocked state to the locked state. When the sliding member 42 moves towards the open position, the trigger part 422 drives the traction rod 3 to rotate open. The traction rod 3 rotating open releases the limit engagement with the interlocking component 2 in the locked state, causing the interlocking component 2 to switch to the unlocked state.

[0068] like Figure 4-10 As shown in Figures 13 and 14, the interlocking assembly 2 includes a locking member 21 and a locking shaft 22. The locking member 21 is rotatably mounted on the support assembly 1, and the locking shaft 22 is slidably engaged with the locking member 21 to drive the locking member 21 from the unlocked position to the locked position. The linkage assembly 6 is connected to the locking shaft 22. Preferably, the locking member 21 has a groove 210, which includes a locking area 2101 and an unlocking area 2102 that are interconnected. The locking shaft 22 slides along the groove 210, and the locking shaft 22 is located at the closing position of the trigger part 422. On the movement trajectory, when the locking shaft 22 moves from the unlocking area 2102 to the locking area 2101, the locking member 21 rotates from the unlocking position to the locking position. The locking member 21 in the locking position is in a limiting engagement with the traction rod 3. At this time, the traction rod 3 is used to limit the interlocking assembly 2 to the locked state. That is, the locking part 33 of the traction rod 3 is in a limiting engagement with the locking member 21 to prevent the locking member 21 from rotating. When the locking member 21 rotates from the locking position to the unlocking position, the locking shaft 22 moves from the locking area 2101 to the unlocking area 2102.

[0069] Furthermore, such as Figure 2-5 As shown in Figure 8, the interlocking assembly 2 also includes 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, 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 traction rod 3's limiting action and the locking reset member 23, so that the interlocking assembly 2 is locked by the traction rod 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 and the traction rod 3 are released from the limiting lock.

[0070] like Figure 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 Figure 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 Figure 2-21 A specific embodiment of an operating mechanism is provided.

[0074] like Figure 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 Figure 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 Figure 2-10 13, 14 and 19 provide an interlocking component 2 for use in this embodiment.

[0079] like Figure 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 this design, the locking body has a double-layer plate structure. One end of the locking body has a first shaft hole 211, in which a rotating shaft 213 is fitted. The locking member 21 is rotatably mounted on the support assembly 1 via the rotating shaft 213. That is, the rotating shaft 213 is rotatably supported between a pair of side plates 11. The other end of the locking body has a second shaft hole 212, in which a reset shaft 214 is fitted. The locking reset member 23 is a tension spring. One end of the locking reset member 23 is connected to the reset shaft 214, and the other end of the locking reset member 23 is connected to the support assembly 1. Alternatively, the other end of the locking reset member 23 can also be connected to the housing 7. A sliding joint is provided between the first shaft hole 211 and the second shaft hole 212. The groove 210 has a stepped surface on one side wall, which divides the groove 210 into an unlocking area 2102 and a locking area 2101 that are connected to 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 larger than that of the unlocking area 2102. In the figure, the inner diameter of the unlocking area 2102 is slightly larger than the outer diameter of the locking shaft 22, so that the opposite sides of the locking shaft 22 slide and engage with the opposite sides of the unlocking area 2102. The inner diameter of the locking area 2101 is larger than that of the unlocking area 2102. The stepped surface at the junction of the unlocking area 2102 and the locking area 2101 forms a rounded corner, which facilitates the movement of the locking shaft 22 between the unlocking area 2102 and the locking area 2101.

[0080] like Figure 6 , 7 As shown, when the locking member 21 is rotated to the unlocked position, the end of the locking member 21 away from the rotating shaft 213 is separated from the traction rod 3 and is in the state of releasing the limit engagement. The locking reset member 23 is in the second state. The locking shaft 22 is located in the unlocked area 2102. The locking shaft 22 abuts against the end of the unlocked area 2102 away from the locking area 2101. At this time, the interlocking assembly 2 is in the unlocked state.

[0081] During the process of the locking shaft 22 being driven to move from the unlocking region 2102 to the locking region 2101, the locking member 21 rotates from the unlocked position to the locked position. The locking reset member 23 undergoes elastic deformation as the locking member 21 rotates, gradually changing from the second state to the first state. Under the elastic action of the locking reset member 23, the locking shaft 22 remains in close contact with the lower edge of the locking region 2101.

[0082] like 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 Figure 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 Figure 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 Figure 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 invention, 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 conventionally placed during use. They are used only for ease of description and do not indicate that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are used only 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 scope of protection 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. 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 1-9, wherein the linkage assembly (6) is driven to connect with the rotating shaft (81).

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