Switching appliance

Abstract

This invention relates to the field of low-voltage electrical appliances, specifically to a switchgear that is easy to assemble and operate. Its length, width, and height are d1, d2, and d3 respectively, with the operating section and the switching section stacked along direction d3. In the operating section, a tripping module drives the operating mechanism to trip. The operating mechanism includes a support structure and a rotating operating shaft rotatably mounted on the support structure. The operating shaft drives the operating mechanism to close or open by reciprocating rotation. The switching section includes n switching units, where n ≥ 1. When n ≥ 2, the switching units are stacked sequentially along direction d3. The contact system of each switching unit includes a moving contact mechanism and a stationary contact that work together. The rotation axis of the moving contact mechanism is the same as that in direction d3. The tripping module is arranged side-by-side with the operating mechanism along direction d2. The rotation axis of the operating shaft is the same as that in direction d2.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and more specifically to a switching device. Background Technology

[0002] Disconnectors used in photovoltaic grids consist of an operating section and a switching section. The operating section includes an operating mechanism and a trip unit assembly for driving the operating mechanism to trip. Two trip unit assemblies are typically used to achieve remote tripping and automatic tripping due to line faults. In existing disconnectors, the trip unit assembly and operating mechanism are housed in the same housing, resulting in complex layout and cumbersome assembly. Furthermore, in existing disconnectors, the operating shaft (used for external force to drive the operating mechanism to open or close) and output shaft (connected to the moving contact mechanism of the switching section) of the operating mechanism are axially aligned. The operating end of the operating shaft and the output shaft are located at opposite ends of the operating section (i.e., the stacking direction of the switching units in the switching section is the same as the axis of the operating shaft). In some highly integrated environments, this makes the opening and closing operation of the disconnector inconvenient or prevents it from being installed in the intended position. Additionally, in existing disconnectors, situations often occur where the operating mechanism fails to trip due to adhesion between the moving and stationary contacts or excessive friction between plug-in type moving and stationary contacts. Summary of the Invention

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a switch that is easy to assemble and operate.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A switching device has a length direction d1, a width direction d2 and a height direction d3 respectively, and includes an operating part and a switching part stacked along the direction d3;

[0006] The operating unit includes an operating mechanism and a tripping module; the tripping module is used to drive the operating mechanism to trip; the operating mechanism includes a support structure and a rotating operating shaft rotatably mounted on the support structure; the operating shaft is configured to drive the operating mechanism to close and open by reciprocating rotation.

[0007] The switching unit includes n switching units, where n≥1; the switching unit is configured such that when n≥2, each switching unit is stacked sequentially along direction d3; each switching unit includes a contact system, which includes a moving contact mechanism and a stationary contact used in conjunction, wherein the rotation axis of the moving contact mechanism is the same as that of direction d3;

[0008] The tripping module is arranged side by side with the operating mechanism along direction d2; the rotation axis of the operating shaft is the same as that of direction d2.

[0009] Furthermore, the operating mechanism also includes a jump fastener, a locking fastener, and a locking member, which are rotatably mounted on the support structure respectively; the jump fastener and the locking fastener are engaged in a latching engagement and the jump fastener is connected to the moving contact mechanism in a transmission manner; the locking member and the locking fastener are engaged in a limiting engagement so that the locking fastener and the jump fastener maintain a latching engagement; the rotation axis of the locking member is the same as the direction d2 and is configured to be driven by the release module to rotate so as to release the limiting engagement with the locking fastener, allowing the jump fastener and the locking fastener to release their latching engagement;

[0010] The tripping module includes a first tripping unit assembly and a second tripping unit assembly. Both the first and second tripping unit assemblies include an electromagnetic tripping unit with its axis perpendicular to direction d2. The first tripping unit assembly includes a first driving member that is driven in conjunction with the corresponding electromagnetic tripping unit and with the locking member. The second tripping unit assembly includes a second driving member that is driven in conjunction with the corresponding electromagnetic tripping unit and with the locking member.

[0011] Furthermore, the axial direction of the coil assembly of the electromagnetic trip unit is perpendicular to direction d2; the moving direction of the push rod of the electromagnetic trip unit is perpendicular to direction d2.

[0012] Furthermore, the first trip unit assembly and the second trip unit assembly are arranged side by side along direction d3; the axial direction of the electromagnetic trip unit is the same as that of direction d1; the first driving member is configured to move from the first initial position to the first trigger position along the first direction, thereby driving the locking member to rotate and disengage the operating mechanism; the second driving member is configured to move from the second initial position to the second trigger position along the second direction, thereby driving the locking member to rotate and disengage the operating mechanism; the first direction and the second direction are both parallel to direction d1 and opposite to each other.

[0013] Furthermore, the locking member includes a first trigger part and a second trigger part that are respectively driven and cooperate with the first driving member and the second driving member. The first trigger part and the second trigger part are located on the same end of the locking member in the direction d2 and are arranged around the rotation axis of the locking member.

[0014] The first driving member further includes a reset button disposed at one end in the direction d1; the free end of the reset button protrudes outside the housing of the operating part, at least when the first driving member is in the first trigger position; the free end of the reset button is configured to move toward the inside of the housing of the operating part when pressed by an external force, so as to drive the first trip unit assembly to reset.

[0015] Furthermore, the operating mechanism also includes a rocker arm that is driven and linked with the operating shaft; the rocker arm is configured to reciprocate under the drive of the operating shaft to drive the operating mechanism to perform closing and opening operations; the second driving member is also driven and linked with the rocker arm and is configured to move to the second initial position under the drive of the rocker arm when the rocker arm drives the operating mechanism to re-lock, so as to drive the second trip unit assembly to reset.

[0016] Furthermore, the operating mechanism also includes a rocker arm rotatably mounted on the support structure, a spring assembly providing driving force for the closing, opening, and tripping operations of the operating mechanism, a front link, a rear link, and an output structure linked with the moving contact mechanism; the trip fastener, in its length direction, has one end engaged with a locking fastener, a middle section rotatably connected to the front link via a first shaft, and the other end rotatably mounted on the support structure; the front link, in its length direction, has one end rotatably connected to the trip fastener via a first shaft, and the other end rotatably connected to one end of the rear link via a second shaft; the other end of the rear link is rotatably connected to the output structure; the spring assembly includes a main spring; the main spring is configured such that one end is connected to the second shaft and the other end is connected to the rocker arm, and that it stores energy and then releases energy during the closing and opening operations of the operating mechanism; the operating shaft is driven and linked with the rocker arm; the operating shaft is configured to drive the rocker arm to reciprocate through reciprocating rotation, thereby driving the operating mechanism to perform closing and opening operations; the output structure is linked with the moving contact mechanism.

[0017] Furthermore, the output structure includes a transmission gear and an output gear shaft that mesh and are rotatably mounted on the support structure; one end of the rear connecting rod is rotatably connected to the front connecting rod via a second shaft, and the other end is rotatably connected to the transmission gear to drive the transmission gear to rotate; the rotation axis of the transmission gear is the same as direction d2; the rotation axis of the output gear shaft is the same as direction d3.

[0018] Furthermore, the rotational axes of the operating shaft, rocker arm, jump fastener, locking fastener, locking element, and transmission gear are all the same as direction d2; the operating shaft and transmission gear are coaxially arranged.

[0019] Furthermore, the support structure includes a mechanism bracket, which includes two bracket side plates that are spaced apart from each other along direction d2;

[0020] The transmission gear component includes a transmission shaft body, a transmission connecting part, and a transmission gear part; one end of the transmission connecting part is fixedly connected to the transmission shaft body and the other end is rotatably connected to the rear connecting rod; the transmission gear part is fixedly mounted on the transmission connecting part, and the transmission gear part and the transmission connecting part are coaxially arranged; the two ends of the transmission connecting part are respectively rotatably mounted on two support side plates; the middle of the transmission connecting part is provided with a transmission shaft body clearance hole for the operating shaft to pass through.

[0021] Furthermore, the transmission gear is configured to switch between the closed position and the open position of the transmission gear by reciprocating rotation;

[0022] The transmission gear component further includes a transmission gear component mating part; the transmission gear component mating part is configured to engage with the support structure to limit the transmission gear component when the transmission gear component rotates to the closed position to prevent the transmission gear component from continuing to rotate, and to engage with the support structure to limit the transmission gear component when the transmission gear component rotates to the open position to prevent the transmission gear component from continuing to rotate.

[0023] Furthermore, the support structure includes a mechanism bracket, which includes two bracket side plates spaced apart relative to each other along direction d2; the axial ends of the transmission gear are respectively rotatably mounted on the two bracket side plates; the mating part of the transmission gear is located on the axial end of the transmission gear; the bracket side plate is provided with a bracket notch for the mating part of the transmission gear to move therein, and the side wall of the bracket notch is provided with a bracket closing positioning surface and a bracket opening positioning surface; the mating part of the transmission gear is configured to abut against the bracket closing positioning surface to limit the transmission gear when the transmission gear rotates to the transmission gear closing position to prevent the transmission gear from continuing to rotate, and to abut against the bracket opening positioning surface to limit the transmission gear when the transmission gear rotates to the transmission gear opening position to prevent the transmission gear from continuing to rotate.

[0024] Furthermore, the transmission gear component mating part has a mating part closing position and a mating part closing position corresponding to the transmission gear component's closing position and opening position, respectively; the operating mechanism also includes a closing assist component mounted on the operating shaft and rotating synchronously therewith, the closing assist component including a closing assist part, the closing assist part being used to apply a force to the transmission gear component mating part, the force being used to drive the transmission gear component mating part to drive the transmission gear component to rotate toward the transmission gear component's opening position; the mating part closing position is located on the movement path of the closing assist part.

[0025] Furthermore, the rocker arm includes two rocker arm legs arranged opposite each other along direction d2, a rocker arm beam, and a rocker arm connecting part; one end of each of the two rocker arm legs is bent and fixedly connected to the rocker arm beam, and the other end is rotatably mounted on the two support side plates; one end of the main spring is connected to the second shaft and the other end is connected to the rocker arm beam; the operating mechanism also includes at least one set of transmission components that cooperate one-to-one with the rocker arm legs, the transmission components include a transmission wheel and a transmission connecting rod, the transmission wheel is mounted on the operating shaft and rotates synchronously with it, and the two ends of the transmission connecting rod are rotatably connected to the transmission wheel and the corresponding rocker arm leg, respectively; the tripping assist component is served by the transmission wheel.

[0026] The switchgear of the present invention has a layout of operating mechanism, tripping module and switching part that greatly reduces the size, allowing the switchgear to be used in highly integrated installation environments and ensuring normal operation of the operating mechanism; moreover, the three parts of operating mechanism, tripping module and switching part can be manufactured and assembled separately, realizing modular production and assembly of switchgear and improving efficiency.

[0027] In addition, the layout of the trip unit assembly and the locking element of the operating mechanism helps to simplify the cooperation between the trip unit assembly and the locking element.

[0028] In addition, the drive components of the two trip unit assemblies move in opposite directions to output tripping drive force respectively, which facilitates the design of the transmission coordination between the tripping module and the operating mechanism.

[0029] Furthermore, the tripping assist component ensures the reliability of the operating mechanism's tripping performance. The tripping assist component is provided by a transmission wheel, which helps reduce the number of parts and simplifies the structure of the operating mechanism. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the operating part of the present invention;

[0031] Figure 2 This is an exploded view of the operating part of the present invention;

[0032] Figure 3 This is a projection view of the operating mechanism of the present invention in the closed state, perpendicular to direction d2;

[0033] Figure 4 This is a cross-sectional view of the operating mechanism of the present invention in the closed state;

[0034] Figure 5 This is a schematic diagram of the operating mechanism in the closed state of the present invention. Sub-figure (51) shows the operating mechanism from one perspective, and sub-figure (52) shows the operating mechanism from another perspective.

[0035] Figure 6 This is a schematic diagram of the operating mechanism of the present invention in the closed state, with the front plate of the bracket removed;

[0036] Figure 7 This is a projection view of the operating mechanism of the present invention in the tripping process, perpendicular to direction d2;

[0037] Figure 8 This is the invention Figure 7 A cross-sectional view of the operating mechanism;

[0038] Figure 9 This is the invention Figure 7 Another sectional view of the operating mechanism;

[0039] Figure 10 This is a projection view of the operating mechanism in the disengaged state of the present invention, perpendicular to direction d2;

[0040] Figure 11 This is the invention Figure 10 A cross-sectional view of the operating mechanism;

[0041] Figure 12 This is the invention Figure 10 Another sectional view of the operating mechanism;

[0042] Figure 13 This is a projection view of the operating mechanism in the open state of the present invention, perpendicular to direction d2;

[0043] Figure 14 This is the invention Figure 13 A cross-sectional view of the operating mechanism;

[0044] Figure 15 This is a schematic diagram of the structure of the mechanism support of the present invention;

[0045] Figure 16 This is a schematic diagram of the rocker arm of the present invention. Sub-figure (161) shows the rocker arm from one perspective, and sub-figure (162) shows the rocker arm from another perspective.

[0046] Figure 17 This is a schematic diagram of the structure of the jump fastener of the present invention;

[0047] Figure 18 This is a schematic diagram of the structure of the rear connecting rod of the present invention;

[0048] Figure 19 This is a schematic diagram of the transmission gear component of the present invention. Sub-figure (191) shows the transmission gear component from one perspective, and sub-figure (192) shows the transmission gear component from another perspective.

[0049] Figure 20 This is a schematic diagram of the output gear shaft of the present invention;

[0050] Figure 21 This is a schematic diagram of the output gear of the present invention. Sub-figure (211) shows the output gear from one perspective, and sub-figure (212) shows the output gear from another perspective.

[0051] Figure 22 This is a schematic diagram of the output shaft of the present invention. Sub-figure (221) shows the output shaft from one perspective, and sub-figure (222) shows the output shaft from another perspective.

[0052] Figure 23 This is an exploded view of the output gear, limiting member, and support base plate of the present invention;

[0053] Figure 24 This is a schematic diagram of the transmission wheel of the present invention;

[0054] Figure 25 This is a schematic diagram of the locking member of the present invention. Sub-figure (251) shows the locking member from one perspective, and sub-figure (252) shows the locking member from another perspective.

[0055] Figure 26 This is a schematic diagram of the tripping module of the present invention;

[0056] Figure 27 This is a cross-sectional view of the tripping module of the present invention. Sub-figure (271) shows the cross-sectional structure of the tripping module at one cut-out position, and sub-figure (272) shows the cross-sectional structure of the tripping module at another cut-out position.

[0057] Figure 28 This is an exploded view of the tripping module of the present invention;

[0058] Figure 29 This is a schematic diagram of the structure of the second trip unit assembly of the present invention. Sub-figure (291) shows the second trip unit assembly from one perspective, and sub-figure (292) shows the second trip unit assembly from another perspective.

[0059] Figure 30 This is a schematic diagram of the structure of the first trip unit assembly of the present invention. Sub-figure (301) shows the first trip unit assembly from one perspective, and sub-figure (302) shows the first trip unit assembly from another perspective.

[0060] Figure 31 This is a schematic diagram of the structure of the release shell base of the present invention;

[0061] Figure 32 This is a schematic diagram of the structure of the release cover plate of the present invention;

[0062] Figure 33 This is a cross-sectional view of the operating part of the present invention;

[0063] Figure 34 This is a structural diagram of the operating mechanism of existing technology, showing the operating mechanism in the process of disengagement.

[0064] The reference numerals in the attached figures include:

[0065] Tripping module 100; tripping shell 110; tripping shell base 120; first cavity 121; first axial positioning part 122; first radial positioning part 123; first wire channel 124; first wire clamping plate 125; second cavity 130; second axial positioning part 131; second radial positioning part 132; second wire channel 133; second wire clamping plate 134; third cavity 140; tripping shell cover 150; cover body 151; first pressing block 152; second pressing block 153; third pressing block 154; cover observation window 155;

[0066] First trip unit assembly 200; first drive member 201; first connecting part 202; first drive part 203; first drive wall 204; reset button 205; first connecting groove 206; coil assembly 210; magnetic yoke 211; push rod connector 212; reset spring 213; slot 214; connecting plate 215; push rod body 216;

[0067] Second trip unit assembly 250; second drive member 251; second connecting part 252; second drive part 253; second drive wall 254; second connecting groove 255; second reset wall 256;

[0068] Connection mechanism 280, connection circuit board 281, first connection terminal 282, second connection terminal 283, external connection terminal 284;

[0069] Operating device 300;

[0070] Device housing 310, device cover 311, device base 312, device cover plate 313;

[0071] Connect to fixed terminal 320;

[0072] Operating mechanism 330;

[0073] Mechanism bracket 340, bracket front plate 341, bracket rear plate 342, bracket base plate 343, connecting rod limiting part 344, latch limiting part 345, locking part limiting part 346, base plate shaft hole 347, bracket closing positioning surface 348, bracket opening positioning surface 349.

[0074] Operating axis 350;

[0075] Transmission assembly 360, transmission wheel 361, transmission connecting rod 362, transmission wheel connecting hole 363, transmission wheel connecting part 364, and tripping assist part 365;

[0076] Rocker arm 370, rocker arm front leg 371, rocker arm rear leg 372, rocker arm crossbeam 373, rocker arm limiting part 374, rocker arm connecting part 375, rocker arm shaft groove 376, rocker arm reset part 377.

[0077] Jump fastener 380, jump fastener side plate 381, jump fastener crossbeam 382, ​​jump fastener latch part 383, jump fastener shaft hole 384, jump fastener connecting hole 385, jump fastener limiting part 386, jump fastener hanging spring part 387.

[0078] Locking fastener 390;

[0079] Locking component 400, first part of locking component 401, second part of locking component 402, first trigger part 403, second trigger part 404, shaft hole of locking component 405, travel limit part of locking component 406, spring groove of locking component 407.

[0080] Main spring 410;

[0081] Front linkage 420;

[0082] Rear link 430, rear link side plate 431, rear link connecting plate 432;

[0083] Transmission gear component 440, transmission shaft body 441, transmission connection part 442, transmission gear part 443, transmission gear component mating part 444, transmission shaft body clearance hole 445, transmission connection hole 446.

[0084] Output gear shaft 450;

[0085] Output gear 460, output gear teeth 461, connecting hole 462, output gear transmission groove 463, output gear limiting part 464, and annular platform 465.

[0086] Output shaft 470, output shaft connecting part 471, output shaft driven part 472, output shaft output part 473, output shaft body 474;

[0087] Limiting component 480, limiting component hole 481, limiting component limiting part 482;

[0088] 490; First shaft 501; Second shaft 502; Third shaft 503; Jumper shaft 504; Locking shaft 505; Locking component shaft 506; Jumper stop shaft 507; Rocker arm shaft 508; Detailed Implementation

[0089] 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.

[0090] like Figure 1-14As shown in Figure 33, this invention discloses a switching device, which includes an operating part and a switching part (not shown in the figure). The operating part includes an operating device 300 that is convexly connected to the switching part, and the operating device 300 drives the switching part to close and open. The switching part includes n switching units (not shown in the figure), and each switching unit includes a moving contact mechanism (not shown in the figure) and a stationary contact (not shown in the figure) used in conjunction. The moving contact mechanism is rotatably arranged. In the switching part, when n≥2, each switching unit is stacked along the axial direction of the moving contact mechanism, and the moving contact mechanisms of each switching unit are linked together (for example, each moving contact mechanism is convexly connected to each other through a linkage shaft (not shown in the figure) that runs through the entire switching part, or adjacent moving contact mechanisms are convexly connected to each other through an independent linkage shaft). The operating device 300 includes an operating mechanism 330, and the operating mechanism 330 includes a spring group, which includes a main spring 410. The spring group provides driving force for the operating mechanism 330 to perform closing operation, opening operation, and tripping operation. The main spring 410 is configured to store energy before releasing energy when the operating mechanism 330 closes or opens the circuit; that is, when the operating mechanism 330 performs closing and opening operations, the main spring 410 stores energy before releasing energy.

[0091] Specifically, the switching device of the present invention is a disconnecting switch or a circuit breaker.

[0092] like Figure 1-5 As shown, the length, width, and height directions of the switch / operating device 300 / operating mechanism 330 / tripping module 100 of the present invention are all directions d1, d2, and d3, respectively, and the three directions are perpendicular to each other.

[0093] like Figure 1 , 2 As shown in Figure 33, the operating unit further includes a tripping module 100, which is in transmission cooperation with the operating mechanism 330 and is used to drive the operating mechanism 330 to trip. The tripping module 100 includes two tripping assemblies, namely a first tripping assembly 200 and a second tripping assembly 250; the first tripping assembly 200 drives the operating mechanism 330 to trip according to a first tripping signal; the second tripping assembly 250 drives the operating mechanism 330 to trip according to a second tripping signal; the first tripping signal and the second tripping signal may correspond to faults occurring in different parts of the circuit where the switching device is located, or the first tripping signal may correspond to a fault occurring in the circuit where the switching device is located and the second tripping signal may be a shunt tripping signal, etc.

[0094] like Figure 3-25 The image shows one embodiment of the operating device 300.

[0095] like Figure 3-14As shown, the operating device 300 of this embodiment includes a device housing 310 and an operating mechanism 330 disposed within the device housing 310. The operating mechanism 330 includes a support structure, a rocker arm 370, a jump fastener 380, a locking fastener 390, a locking member 400, a spring assembly, a front connecting rod 420, a rear connecting rod 430, and an output structure, all rotatably mounted on the support structure. The output structure is used for transmission connection with the moving contact mechanism, and the output structure is linked with the moving contact mechanism. The jump fastener 380 and the locking fastener 390 are engaged in a latching engagement. The locking member 400 and the locking fastener 390 are engaged in a limiting engagement to hold the locking fastener 390 in the latching position, thereby maintaining the latching engagement between the locking fastener 390 and the jump fastener 380. One end of the front connecting rod 420 is rotatably connected to the jump fastener 380 via a first shaft 501, and the other end is rotatably connected to one end of the rear connecting rod 430 via a second shaft 502. The other end of the rear connecting rod 430 is rotatably connected to the output structure. The spring assembly includes a main spring 410, one end of which is connected to the second shaft 502 and the other end to the rocker arm 370. When the operating mechanism 330 performs closing and opening operations—that is, when the operating mechanism 330 closes and opens—the rocker arm 370 is driven to rotate by an external force, driving the main spring 410 to first store energy and then release energy. The main spring 410 releases energy to drive the output structure to move through the front connecting rod 420 and the rear connecting rod 430. The output structure drives the moving contact mechanism to rotate, causing the moving contact mechanism to close and open with the stationary contact. The locking member 400 is configured to rotate under the action of an external force to release the limiting engagement with the locking member 390, allowing the jumping member 380 and the locking member 390 to release their latching engagement—specifically, the jumping member 380 rotates under the action of the spring assembly to release its latching engagement with the locking member 390. Furthermore, the rocker arm 370 has a rocker arm closed position, a rocker arm tripped position, and a rocker arm open position arranged sequentially. The rocker arm 370 is configured to switch between these positions by rotation. The rocker arm 370 rotates towards the rocker arm closed position to drive the operating mechanism 330 to close the circuit. The rocker arm 370 rotates towards the rocker arm open position to drive the operating mechanism 330 to open the circuit. When the operating mechanism 330 switches from the closed state to the tripped state, the rocker arm 370 rotates from the rocker arm closed position to the rocker arm tripped position; the rocker arm 370 rotates from the rocker arm tripped position to the rocker arm open position to drive the operating mechanism 330 to re-engage. The trip fastener 380 has a trip fastener latching position and a trip fastener tripped position, which switches between the two positions by rotation. When the trip fastener 380 latches with the locking fastener 390, the trip fastener 380 is in the trip fastener latching position. When the operating mechanism 330 is in the disengaged state, the jump fastener 380 is in the jump fastener disengaged position.When the operating mechanism 330 is released from the closed state, the trip fastener 380 rotates from the trip fastener latching position to the trip fastener release position under the action of the spring assembly. Once the trip fastener 380 reaches the trip fastener latching position, it remains in that position. During the process of the trip fastener 380 rotating from the trip fastener latching position to the trip fastener release position, the rocker arm 370 remains stationary (i.e., the rocker arm 370 remains in the rocker arm closed position).

[0096] As an alternative implementation of the operating mechanism 330, the operating mechanism does not have a locking element 400. The locking element 390 is driven by an external force (the external force comes from a trip unit, such as a thermomagnetic trip unit for short circuit and overload protection, an electromagnetic trip unit for short circuit protection, a shunt trip unit for shunt tripping, a thermal trip unit for overload protection, etc.) to rotate and release the limiting engagement with the tripping element 380, thereby disengaging the operating mechanism 330.

[0097] Specifically, the rotational axes of the rocker arm 370, the jump fastener 380, the locking fastener 390, and the locking member 400 are all the same as direction d2, meaning that the rotational axes of the above four are arranged parallel to each other at intervals. The axial directions of the first shaft 501 and the second shaft 502 are the same as direction d2.

[0098] Specifically, the support structure includes a mechanism bracket 340, which comprises two bracket side plates spaced apart along direction d2. The two side plates are a front bracket plate 341 and a rear bracket plate 342. The jump fastener 380, locking fastener 390, locking member 400, front connecting rod 420, and rear connecting rod 430 are all disposed between the two bracket side plates. The rocker arm 370 includes rocker arm legs and a rocker arm crossbeam 373. Two sets of rocker arm legs are spaced apart along direction d2, with one end of each set bent and connected to the rocker arm crossbeam 373, and the other end rotatably mounted on the two sets of bracket side plates. The jump fastener 380 is rotatably mounted on the bracket side plate via a jump fastener shaft 504. The locking fastener 390 is rotatably mounted on the bracket side plate via a locking shaft 505—the two ends of the locking shaft 505 are rotatably mounted on the two bracket side plates respectively. The locking member 400 is rotatably mounted on the side plate of the bracket via the locking member shaft 506—the two ends of the locking member shaft 506 are respectively rotatably mounted on the two side plates of the bracket. The jump fastener 380, along its length (or in direction d1), has one end rotatably mounted on the side plate of the bracket, its middle section rotatably connected to one end of the front connecting rod 420 via the first shaft 501, and its other end engaging with the locking member 390. The front connecting rod 420, along its length, has one end rotatably connected to the jump fastener 380 via the first shaft 501, its middle section being the middle part of the connecting rod, and its other end rotatably connected to one end of the rear connecting rod 430 via the second shaft 502. The other end of the rear connecting rod 430 is rotatably connected to the output structure. One end of the main spring 410 is connected to the rocker arm beam 373, and the other end is connected to the second shaft 502; the axial direction of the main spring 410 intersects the length direction of the jump fastener 380. The projection direction of the operating mechanism 330 is the orthogonal projection of direction d2, which is the side projection of the operating mechanism. On the side projection of the operating mechanism, the main spring 410 and the jump fastener 380 are arranged in a cross shape. On the side projection of the operating mechanism, the rocker arm beam 373 and the second shaft 502 are located on both sides of the jump fastener 380 in the width direction (or in direction d3); the length and width directions of the jump fastener 380 are perpendicular to each other. When the operating mechanism 330 performs the closing and opening operations, when the connection point between the main spring 410 and the rocker arm beam 373, the first shaft 501, and the second shaft 502 are all located on the axis (geometric axis) of the main spring 410, the main spring 410 stores energy to its maximum. The position of the main spring 410 at this time is also the dead point position of the main spring 410 / the dead point position of the operating mechanism 330. Furthermore, the mechanism support 340 also includes a support base plate 343; in direction d3, one end of each of the two sets of support side plates is fixedly connected to the support base plate 343.

[0099] As an alternative implementation of the mechanism support 340, the mechanism support 340 does not have a support base plate 343. Instead, the device base 312 of the device shell 310 performs the function of the support base plate 343. That is, the device shell 310 can also serve as a component of the support structure.

[0100] As an alternative implementation of the mechanism support 340, the mechanism support 340 may be provided with only one support side plate.

[0101] As an alternative implementation of the support structure, the support structure is provided by the device housing 310.

[0102] As an alternative to the arrangement of the main spring 410, one end of the main spring 410 is connected to the spring shaft (the two ends of the spring shaft are respectively connected to the two rocker arm legs, which is equivalent to the main spring 410 being connected to the rocker arm 370 through the spring shaft) and the other end is connected to the second shaft 502.

[0103] Specifically, in the direction d2, the two rocker arms of the rocker arm 370 are located on both sides of the two support side plates. The two rocker arms are respectively mounted on the two support side plates via a rocker arm shaft 508. Further, the two rocker arms 370 are respectively the front rocker arm leg 371 and the rear rocker arm leg 372 (e.g.,...). Figure 16 As shown), one end of the rocker arm front leg 371 and the rocker arm rear leg 372 are respectively bent and connected to both ends of the rocker arm crossbeam 372, and the other end is rotatably mounted on the bracket front plate 341 and the bracket rear plate 342, respectively. Furthermore, the rocker arm 370 is a one-piece structure, for example, made by punching and bending a metal plate.

[0104] Specifically, the rocker arm 370 further includes a rocker arm limiting part 374; when the operating mechanism 330 is in the disengaged state, the jump fastener 380 abuts against the rocker arm limiting part 374 for a limiting engagement; when the operating mechanism 330 re-engages, the rocker arm 370 swings towards the rocker arm open position, and the rocker arm limiting part 374 presses against the jump fastener 380 to reset the jump fastener 380 to the jump fastener latching position. At the same time, the jump fastener 380 allows the locking fastener 390 and the locking member 400 to reset, and the jump fastener 380 and the locking fastener 390 resume their latching engagement, while the locking fastener 390 and the locking member 400 resume their limiting engagement. Further, the rocker arm limiting part 374 is disposed on the rocker arm leg; when the operating mechanism 330 is in the disengaged state, the rocker arm limiting part 374 abuts against the jump fastener side plate 381 of the jump fastener 380 for a limiting engagement.

[0105] Specifically, the jump fastener 380 includes a jump fastener side plate 381, a jump fastener crossbeam 382, ​​and a jump fastener latching part 383. Two jump fastener side plates 381 are spaced apart relative to each other along direction d2. Along the length direction of the jump fastener 380 (i.e., the length direction of the jump fastener side plates 381), one end of each jump fastener side plate 381 is bent and connected to the jump fastener crossbeam 382, ​​and the other end is rotatably mounted on two sets of support side plates. The two jump fastener side plates 381 are located on one side of the jump fastener crossbeam 382, ​​and the jump fastener latching part 383 is fixedly connected to the jump fastener crossbeam 382 and located on the other side of the jump fastener crossbeam 382. Further, each of the two jump fastener side plates 381 is rotatably mounted on one of the two support side plates via a jump fastener shaft 504. The jump fastener side plate 381 has a jump fastener shaft hole 384 that mates with the jump fastener shaft 504. The jump fastener side plate 381 also has a jump fastener connecting hole 385 that mates with the first shaft 501.

[0106] Specifically, the jump fastener 380 is a one-piece structure, for example, made by punching and bending a metal plate.

[0107] Specifically, the operating mechanism 330 includes two front connecting rods 420 arranged side-by-side and spaced apart along direction d2 and operating synchronously. One end of each front connecting rod 420 is rotatably connected to the two jump buckle side plates 381 of the jump buckle 380, and the other end of each front connecting rod 420 is rotatably connected to one end of the rear connecting rod 430. Further, each of the two front connecting rods 420 is rotatably connected to the two jump buckle side plates 381 of the jump buckle 380 via a first shaft 501. The axial direction of the first shaft 501 is the same as that of direction d2. Further, along direction d2, the two front connecting rods 420 are located on both sides of the two jump buckle side plates 381 and simultaneously between the two support side plates of the mechanism bracket 340.

[0108] Specifically, the rear link 430 includes a rear link side plate 431 and a rear link connecting plate 433. The two rear link side plates 431 are spaced apart along direction d2 and are bent and connected to the rear link connecting plate 433 respectively. One end of each rear link side plate 431 is rotatably connected to two front links 420 via a second shaft 502, and the other end of each rear link side plate 431 is rotatably connected to the output structure via a third shaft 503. The axial directions of the second shaft 502 and the third shaft 503 are both the same as direction d2. Furthermore, along direction d2, the two rear link side plates 431 are located between the two front links 420. Furthermore, the rear link 430 is a one-piece structure.

[0109] like Figure 4 , 6As shown in Figures 9 and 12, the operating mechanism 330 further includes a return spring, which drives the locking element 390 and the locking element 400 to reset so that they return to their limit engagement. Further, the return spring is a torsion spring, sleeved on the locking shaft 505, with one spring arm engaging with the locking element 390 and the other spring arm engaging with the locking element 400.

[0110] like Figure 4 , 8 As shown in Figures 9, 11, 12, and 14, the side plate of the bracket is also provided with a locking limit part 345, and the locking member 390 abuts and limits the locking limit part 345 under the action of the return spring.

[0111] like Figure 3-15 As shown in Figures 19-24, the operating mechanism 330 further includes an operating shaft 350 and a transmission assembly 360. The transmission assembly 360 is paired with the rocker arm leg of the rocker arm 370. The operating shaft 350 is connected to the rocker arm 370 via at least one set of transmission assemblies 360. The operating component 350, the transmission assembly 360, and the rocker arm 370 are linked together to achieve synchronous rotation of the operating component 350 and the rocker arm 370. The operating shaft 350 is configured to drive the rocker arm 370 to reciprocate through reciprocating rotation, thereby driving the operating mechanism 330 to close and open the circuit breaker.

[0112] Specifically, the rotation axis of the operating shaft 350 is the same as the direction d2.

[0113] Specifically, the transmission assembly 360 includes a transmission wheel 361 and a transmission connecting rod 362. The transmission wheel 361 is mounted on the operating shaft 350, and the transmission wheel 361 and the operating shaft 350 rotate synchronously—that is, they are linked. One end of the transmission connecting rod 362 is rotatably connected to the transmission wheel 361, and the other end is rotatably connected to the corresponding rocker arm leg. Further, the rocker arm leg includes a rocker arm leg main body and a rocker arm connecting part 375. One end of the rocker arm leg main body is bent and connected to the rocker arm crossbeam 373, and the other end is rotatably mounted on the corresponding support side plate and fixedly connected to the rocker arm connecting part 375. Further, the end of the rocker arm leg main body connected to the rocker arm connecting part 375 is provided with a rocker arm shaft groove 376, which is located on one side of the rocker arm connecting part 375 and is used to cooperate with the rocker arm shaft 508. The rocker arm connecting part 375 is used to rotatably connect with the corresponding transmission connecting rod 362.

[0114] As an alternative implementation of the transmission assembly 360, the transmission wheel 361 is a gear, and the transmission assembly 360 also includes a rocker arm gear that is coaxially linked with the rocker arm 370, with the transmission wheel 361 and the rocker arm gear meshing and transmitting power.

[0115] Specifically, the operating shaft 350 is connected to the two rocker arm legs of the rocker arm 370 via two sets of transmission components 360. In the direction d2, the two sets of transmission components 360 are located on both sides of the two support side plates of the mechanism bracket 340. At least one end of the operating shaft 350 serves as the operating end, protruding from the outside of the device housing 310 in the direction d2. In this embodiment, the end of the operating shaft 350 that passes sequentially through the support front plate 341 of the mechanism bracket 340 and the device housing 310 serves as the operating end.

[0116] As an alternative implementation of the operating shaft 350, both ends of the operating shaft 350 protrude outside the device housing 310 and can be operated by external force to drive the operating mechanism 330 to perform closing and opening operations.

[0117] like Figure 3-15 As shown in Figures 19-23, the output structure includes a transmission gear 440 and an output gear shaft 450 that mesh and are rotatably mounted on a support structure. The transmission gear 440 is configured to switch between a closed and open position by reciprocating rotation; that is, the transmission gear 440 has two working positions, namely a closed position and a closed position, corresponding to the closed and open states of the operating mechanism 330, respectively. The reciprocating rotation of the transmission gear 440 allows switching between the two working positions. The output gear shaft 450 is configured to switch between a closed and open position by reciprocating rotation; that is, the output gear shaft 450 has two working positions, namely a closed position and a closed position, corresponding to the closed and open states of the operating mechanism 330, respectively. The reciprocating rotation of the output gear shaft 450 allows switching between the two working positions. One end of the rear connecting rod 430 is rotatably connected to the front connecting rod 420, and the other end is rotatably connected to the transmission gear component 440. The rotational axis of the transmission gear component 440 intersects the rotational axis of the output gear shaft 450. Furthermore, the rotational axis of the transmission gear component 440 is the same as direction d2; that is, the rotational axes of the operating shaft 350, rocker arm 370, jump fastener 380, locking fastener 390, locking element 400, and transmission gear component 440 are the same.

[0118] like Figure 3 , 13As shown in Figure 19, the transmission gear component 440 further includes a transmission gear component mating part 444. The transmission gear component mating part 444 is configured to engage with the mechanism bracket 340 to limit the transmission gear component 440's rotation when the transmission gear component 440 rotates to the closed position (stopping the transmission gear component 440 in the closed position), and to engage with the mechanism bracket 340 to limit the transmission gear component 440's rotation when the transmission gear component 440 rotates to the open position (stopping the transmission gear component 440 in the open position). When the operating mechanism 330 is in the closed state, the transmission gear component 440 is located in the closed position; when the operating mechanism 330 is in the open state and the tripped state, the transmission gear component 440 is located in the open position. Furthermore, the transmission gear component mating part 444 is located on the axial end of the transmission gear component 440. The gear engagement portion 444 is provided to protrude along the axial direction of the gear 440—that is, the gear engagement portion 440 is a protruding post, protrusion, or boss extending along the axial direction of the gear 440. The support side plate of the mechanism bracket 340 has a bracket notch for the gear engagement portion 444 to move within it. The side wall of the bracket notch has a bracket closing positioning surface 348 and a bracket opening positioning surface 349. In the closed state, the gear engagement portion 444 of the operating mechanism 330 abuts against the bracket closing positioning surface 348 for a limited engagement. In the open state, the gear engagement portion 444 of the operating mechanism 330 abuts against the bracket opening positioning surface 349 for a limited engagement. The gear engagement portion 444 has a engagement closing position and an engagement partial closing position corresponding to the gear engagement position and the gear opening position, respectively.

[0119] As an alternative implementation, the side plate of the bracket does not have a bracket notch, but instead has a bracket arc-shaped groove that mates with the transmission gear component 444, and the transmission gear component 444 is movably inserted into the bracket arc-shaped groove.

[0120] Specifically, the rotational axes of the transmission gear 440 and the output gear shaft 450 are perpendicular to each other. Furthermore, the axial direction of the output gear shaft 450 is the same as direction d3.

[0121] As an alternative arrangement of the transmission gear 440 and the output gear shaft 450, the rotation axis of the transmission gear 440 is the same as direction d2, and the rotation axis of the output gear shaft 450 is perpendicular to direction d1 and intersects directions d2 and d3 respectively. The relative positional relationship of the rotation axes of the transmission gear 440 and the output gear shaft 450 can be designed according to the needs of actual application scenarios, thereby flexibly adjusting the specific assembly direction of the operating part and the switching part, and improving the applicability of the switching device of the present invention.

[0122] Specifically, the transmission gear component 440 includes a transmission gear portion 443 coaxially disposed therewith. The output gear shaft 450 includes an output gear 460 coaxially disposed therewith. The transmission gear portion 443 and the output gear 460 mesh and transmit power to each other. Further, both the transmission gear portion 443 and the output gear 460 are bevel gears.

[0123] As an alternative implementation of the transmission gear 443 and the output gear 460, both can be implemented using a worm gear. Alternatively, they can be implemented using a helical gear.

[0124] Specifically, the operating shaft 350 and the transmission gear 440 are coaxially rotatable, with their rotation axes coinciding. Further, the transmission gear 440 includes a transmission shaft body 441, a transmission connection part 442, and a transmission gear part 443. The two ends of the transmission shaft body 441 are rotatably mounted on the two support side plates of the mechanism bracket 340; the transmission shaft body 441 is provided with a transmission shaft body clearance hole 445; the operating shaft 350 passes through the transmission shaft body clearance hole 445, and its two ends are rotatably mounted on the two support side plates of the mechanism bracket 340. One end of the transmission connection part 442 is fixedly connected to the support shaft body 441, and the other end is rotatably connected to the rear connecting rod 430 (this end is provided with a transmission connection hole 446 for the third shaft 503 to pass through, and this end is located between the two rear connecting rod side plates 431 of the rear connecting rod 430). Furthermore, the transmission connection part 442 is axially connected to one end of the support shaft 441 and is located near the rear plate 342 of the support frame 340. The output gear 460 is located on the other end of the support shaft 441 and is located near the front plate 341 of the support frame 340. The transmission gear component mating part 444 is fixedly mounted on the transmission gear part 443. The support notch is located on the front plate 341 of the support frame, and the support closing positioning surface 348 and the support opening positioning surface 349 are respectively located at both ends of the support notch.

[0125] As an alternative to the arrangement of the operating shaft 350 and the transmission gear 440, the rotation axes of the operating shaft 350 and the transmission gear 440 are arranged parallel and spaced apart.

[0126] As an alternative to the arrangement of the transmission gear component mating part 444 and the bracket notch, both axial ends of the transmission gear component 440 are provided with transmission gear component mating parts 444, and both bracket side plates are provided with bracket notches, with the two transmission gear component mating parts 444 respectively mating with the two bracket notches.

[0127] Specifically, the output gear shaft 450 further includes an output shaft 470 coaxially linked with the output gear 460. The output shaft 470 is used to drive and link with the moving contact mechanism (i.e., to rotate synchronously), and outputs driving force to the moving contact mechanism to drive it to rotate and close and open with the stationary contact.

[0128] Specifically, the output gear 460 and the output shaft 470 are detachably fixedly connected. Further, the output gear 460 includes output teeth 461, a connecting hole 462, and an output gear transmission groove 463. The output teeth 461 are disposed on one axial end of the output gear 460. The connecting hole 462 is disposed in the middle of the output gear 460 and coaxially therewith. The output gear transmission groove 463 is disposed on the other axial end of the output gear 460. The output shaft 470 includes an output shaft body 474, an output shaft connecting part 471, an output shaft driven part 472, and an output shaft output part 473. The output shaft connecting part 471 and the output shaft driven part 472 are disposed on one axial end of the output shaft body 474. The output shaft connecting part 472 is inserted into the connecting hole 462 and engages with the output gear 460 to prevent relative movement between the output gear 460 and the output shaft 470 along the axial direction of the output gear shaft 450. The driven part 472 of the output shaft is inserted into the output gear transmission groove 463, preventing relative movement between the output gear 460 and the output shaft 470 along the rotation direction of the output gear shaft 450. The output part 473 of the output shaft is disposed on the other axial end of the output shaft body 474 and is used for transmission connection with the moving contact mechanism. Further, the connecting hole 462 includes a large-diameter section and a small-diameter section arranged sequentially and connected, and a locking step is provided at the connection between the large-diameter section and the small-diameter section. The output shaft connecting part 471 includes at least two locking arms, one end of which is fixedly connected to the output shaft body 474 and the other end is provided with a locking platform; after the output shaft connecting part 471 passes through the small-diameter section, the locking platform and the locking step are engaged for limiting cooperation.

[0129] like Figure 3-15 As shown in Figures 20-23, the output gear shaft 450 is rotatably mounted on the support structure. Furthermore, the output gear shaft 450 is rotatably mounted on the base plate 343 of the mechanism bracket 340.

[0130] Specifically, the mechanism support 340 also includes a limiting member 480. The support base plate 343 has a base plate shaft hole 347, and the limiting member 480 is inserted into the base plate shaft hole 347. The limiting member 480 and the support base plate 343 are mutually restrictive to prevent relative rotation around the rotation axis of the output gear shaft 450 and relative movement along the axial direction of the output gear shaft 450. The limiting member 480 has a limiting member hole 481 and a limiting member limiting part 482. One end of the output gear 460 is rotatably disposed in the limiting member hole 481; the axial middle part of the output gear 460 has an annular platform 465; the annular platform and the output shaft body 474 are respectively located on both sides of the support base plate 343 and mutually restrictive to prevent the output gear shaft 450 from moving relative to the support base plate 343 along its axial direction. The output gear shaft 450 is configured to cooperate with the limiting part 482 when the operating mechanism 330 is closed to limit the output gear shaft 450 to the output gear shaft closed position, and to cooperate with the limiting part 482 when the operating mechanism 330 is open to limit the output gear shaft 450 to the output gear shaft open position.

[0131] As an alternative to the arrangement of the output gear shaft 450, the output gear shaft 450 is not rotatably mounted on the bracket base plate 343, but is rotatably mounted on the device base 312 of the device housing 310.

[0132] Specifically, the limiting part 482 is a fan-shaped hole provided on the base plate 343 of the support. The fan-shaped hole is located on the radial side of the shaft hole 347 of the base plate, and one radial end of the fan-shaped hole communicates with the shaft hole 347 of the base plate. The two ends of the fan-shaped hole are the closing limiting end and the opening limiting end, respectively. The output gear 460 also includes an output gear limiting part 464, which is provided on one axial end of the output gear 460 and is movably inserted into the fan-shaped hole. The output gear limiting part 464 is configured to abut against the closing limiting end when the operating mechanism 330 closes the circuit, thereby preventing the output gear shaft 450 from continuing to rotate and stopping it in the output gear shaft closed position; and to abut against the opening limiting end when the operating mechanism 330 opens the circuit, thereby preventing the output gear shaft 450 from continuing to rotate and stopping it in the output gear shaft open position.

[0133] As an alternative to the limiting member 482 and the output gear limiting member 464, the output gear limiting member 464 may also be provided on one axial end of the output shaft body 474.

[0134] As an alternative implementation of the limiting member 482 and the output gear limiting member 464, the limiting member 482 is a protrusion extending axially along the output gear shaft 450, and the output gear limiting member 464 is a fan-shaped groove.

[0135] As an alternative implementation of the limiting member 482 and the output gear limiting member 464, the limiting member 482 is not connected to the base plate shaft hole 347.

[0136] An improvement of the present invention is that the operating mechanism 330 also has a tripping assist function, that is, when the operating mechanism 330 trips, the operating shaft 350 can apply a force to the output gear 440 through the tripping assist component to make it rotate toward the tripping position of the output gear.

[0137] like Figure 3 , 13 As shown, the operating mechanism 330 also includes a tripping assist component that is coaxially and synchronously rotated on the operating shaft 350. The tripping assist component includes a tripping assist part 365, which applies tripping assistance to the transmission gear engagement part 444. This assistance drives the transmission gear engagement part 444 to rotate the transmission gear 440 towards the tripping position. The engagement part's closing position is located on the movement path of the tripping assist part 365. That is, when the tripping assist part 365 rotates to the engagement part's closing position under the drive of the operating shaft 350, if the transmission gear engagement part 444 has not yet left the engagement part's closing position, the tripping assist part 365 presses against the transmission gear engagement part 444, causing it to drive the transmission gear 440 to rotate towards the tripping position, thereby assisting the tripping operation of the operating mechanism 330 and preventing tripping failure. When the operating mechanism 330 is in the open state, the assist end is located between the closed position and the partially closed position of the mating part in the rotation direction of the output gear 440.

[0138] When the driving force of the spring assembly alone cannot disconnect the moving contact and the stationary contact—for example, when the output gear 440 cannot rotate due to excessive friction between the moving and stationary contacts due to adhesion / plugging—the opening assist part 365 can apply a force to the output gear 440 through the output gear mating part 444, causing it to rotate toward the opening position. This ensures that the operating mechanism can successfully perform the opening operation and guarantees electrical safety.

[0139] Specifically, the tripping assist component is provided by the transmission wheel 361.

[0140] Specifically, the transmission wheel 361 includes a transmission wheel connecting part 364 and a tripping assist part 365. The transmission wheel connecting part 364 is provided with a transmission wheel connecting hole 363. The transmission wheel 361 is sleeved on the operating shaft 350 through the transmission wheel connecting hole 363. One end of the tripping assist part 365 is fixedly connected to the transmission wheel connecting part 364, and the other end is used for transmission engagement with the output gear engagement part 444 of the output gear component 440, and this end is the assist end. Furthermore, the transmission wheels 361 of the two sets of transmission components 360 have the same structure, or the transmission wheel 361 as the tripping assist part adopts the above structure, while the other transmission wheel 361 does not have a tripping assist part 365.

[0141] Specifically, under normal operating conditions, the tripping assist unit 365 of the operating mechanism 330 can operate in one of the following three ways:

[0142] Method 1: The tripping assist unit 365 rotates to engage with the output gear component 444 and continues to rotate at the first preset angle. The main spring 410 begins to release energy, and the moving contact mechanism and the stationary contact are still in contact with each other and have not yet separated. That is, the tripping assist unit 365 can provide a tripping assist to the moving contact mechanism through the output structure before the main spring 410 begins to release energy. However, the moving contact mechanism will not be separated from the stationary contact before the main spring 410 begins to release energy, so as to avoid the two being burned by the electric arc.

[0143] In the second method, when the tripping assist unit 365 rotates to engage with the output gear component mating part 444, the main spring 410 begins to release energy. That is, the moment when the tripping assist unit 365 engages with the output gear component mating part 444 is the same moment when the main spring 410 begins to release energy.

[0144] In method three, when the tripping assist unit 365 needs to rotate through a second preset angle to engage with the output gear engagement part 444, the main spring 410 begins to release energy. That is, the time when the tripping assist unit 365 reaches the closed position of the output engagement part is later than the time when the main spring 410 begins to release energy.

[0145] As an alternative implementation of the operating mechanism 330, an output gear mating part 444 is provided at each of the two axial ends of the output gear 440, and the front plate 341 of the bracket is provided with a bracket notch / the rear plate 342 of the bracket is provided with a bracket notch / both the front plate 341 and the rear plate 342 of the bracket are provided with bracket notches, and both sets of transmission wheels 361 are provided with a brake opening assist part 365.

[0146] like Figure 3-15 As shown, the spring assembly also includes a jump-lock spring 490, which applies a force to the jump-lock member 380, causing the jump-lock member 380 to tend to rotate toward the jump-lock member disengagement position.

[0147] like Figure 3-14 As shown, the operating mechanism 330 also includes a jump-locking stop shaft 507 fixedly mounted on the mechanism bracket 340. In the disengaged state, the jump-locking member 380 engages with the jump-locking stop shaft 507 to stop at the disengaged position. After the locking member 400 and the locking member 390 release their engagement, the jump-locking spring 490 drives the jump-locking member 380 to rotate from the latched position to abutting against the jump-locking stop shaft 507, thus stopping the jump-locking member 380 at the disengaged position.

[0148] Specifically, the snap-on spring 490 is a tension spring. The snap-on fastener 380 also includes a snap-on spring hanging part 387; one end of the snap-on side plate 381 is connected to the snap-on crossbeam 382 and the other end is rotatably mounted on the support structure and is provided with the snap-on spring hanging part 387. One end of the snap-on spring 490 is connected to the snap-on spring hanging part 387 and the other end is connected to the support structure (specifically, the support base plate 343 of the mechanism bracket 340). Furthermore, both snap-on side plates 381 of the snap-on fastener 380 are provided with snap-on spring hanging parts 387, each cooperating with a snap-on spring 490.

[0149] As an alternative implementation of the aforementioned jump spring 490, the jump spring 490 is a torsion spring, sleeved on the jump shaft 504 or the spring shaft on the side plate of the bracket, with one spring arm cooperating with the side plate of the bracket and the other spring arm cooperating with the jump fastener 380.

[0150] As an alternative to the connection method between the jump buckle spring 490 and the jump buckle 380, the jump buckle hanging spring parts 387 of the two jump buckle side plates 381 are connected by the jump buckle hanging spring shaft, and one end of the jump buckle spring 490 is connected to the jump buckle hanging spring shaft and the other end is connected to the support base plate 343 of the mechanism support 340.

[0151] Specifically, the two ends of the jump buckle stop shaft 507 are fixedly mounted on the front plate 341 and the rear plate 342 of the bracket. The jump buckle 380 also includes a jump buckle limiting part 386, which is fixedly mounted on the jump buckle side plate 381. The jump buckle limiting part 386 abuts against the jump buckle stop shaft 507 to limit and stop the jump buckle 380 in the jump buckle release position. Furthermore, both sets of jump buckle side plates 381 are provided with jump buckle limiting parts 386.

[0152] Another improvement of the present invention is that when the operating mechanism 330 is disengaged, once the jumper 380 rotates to the jumper disengagement position, it will not rotate again to leave the jumper disengagement position—unless the operating mechanism 330 is re-engaged. During the process of the main spring 410 pulling the connecting rod 430 through the second shaft 502, it will not pass through the dead point position, thereby avoiding the operating mechanism 330 from jamming during the disengagement process and affecting the continuity of the operation of the operating mechanism 330.

[0153] like Figure 3-15 As shown, in the direction d2, the jump fastener 380, the locking fastener 390, and the front connecting rod 420 are all located between the two support side plates of the mechanism bracket 340, and the two front connecting rods 420 are respectively located on both sides of the jump fastener 380. The support side plate is provided with at least one connecting rod limiting part 344 that cooperates one-to-one with the front connecting rod 420; that is, the mechanism bracket 340 includes connecting rod limiting parts 344 provided on the support side plate, and the connecting rod limiting parts 344 cooperate one-to-one with the front connecting rod 420. One support side plate is provided with a connecting rod limiting part 344, or both support side plates are provided with connecting rod limiting parts 344. The operating mechanism 330 is in the closed state (e.g., Figure 4 As shown, the side of the middle part of the connecting rod abuts against the connecting rod limiting part 344. When the operating mechanism is in the closed state and projected onto the side of the operating mechanism, the axis of the first shaft 501, the axis of the second shaft 502, the abutment point of the front connecting rod 420 and the connecting rod limiting part 344 are respectively located at the three vertices of a triangle. The front connecting rod 420 is configured such that when the operating mechanism 330 is in the open state (e.g., ... Figure 14 (as shown) and tripped status (as shown) Figure 12 (As shown) The front link 420 is separated from the link limiting part 344, and remains in contact with the link limiting part 344 during the rotation of the tripping link 380 to the tripping link disengagement position. That is, in the open and disengaged states, the front link 420 is separated from the link limiting part 344; the middle part of the link remains in contact with the link limiting part 344 during the rotation of the tripping link 380 to the tripping link disengagement position. The tripping link 380 is configured to rotate from the tripping link latching position to the tripping link disengagement position to drive the axis of the first shaft 501 from the first side of the axis to the second side of the axis; that is, when the operating mechanism 330 disengages, the tripping link 380 is driven by the spring assembly to move from the tripping link latching position to the tripping link disengagement position, and the tripping link 380 simultaneously drives the first shaft 501 to move the axis of the first shaft 501 from the first side of the axis to the second side of the axis. The main spring 410 is configured such that, after the trip fastener 380 rotates to the trip fastener release position, the force applied to the second shaft 502 tends to cause it to move towards the output structure open position via the rear connecting rod 430. That is, after the trip fastener 380 rotates to the trip fastener release position, the main spring 410 applies a force to the second shaft 502 (this force has the following characteristics): Figure 9 The force F shown causes the second shaft 502 to drive the output structure to move towards the open position of the output structure via the rear connecting rod 430.

[0154] In the prior art operating mechanism, the tripping shaft 504 serves as the stop shaft of the front connecting rod 420. In the closed state, the side of the middle section of the connecting rod abuts against the tripping shaft 504. The contact points of the first shaft 501, the second shaft 502, the front connecting rod 420, and the tripping shaft 504 are located at the three vertices of a triangle. The distance L2 between the second shaft 502 and this contact point along the length of the front connecting rod 420 is less than the distance L1 between the first shaft and this contact point along the length of the front connecting rod 420. The axis of the first shaft 501, projected onto the side of the operating mechanism, is located on the first side of the axis of the main spring 410. When the operating mechanism of the prior art is disengaged, during the process of the trip fastener 380 rotating from the trip fastener latching position to the trip fastener disengaged position, the position of the rocker arm 370 remains unchanged (i.e., the rocker arm 370 remains in the rocker arm closed position), and the front connecting rod 420 and the trip fastener shaft 504 always remain in contact. The axis of the first shaft 501 is located on the first side of the axis of the main spring 410 in the side projection of the operating mechanism. Figure 34 As shown, the moment when the trip fastener 380 rotates from the trip fastener latching position to the trip fastener disengaged position is denoted as the "intermediate moment". The main spring 410 applies a force F1 to the second shaft 502. This force F1 causes 502 to tend to move towards the closed position of the output structure via the rear connecting rod 430. Therefore, in the subsequent process of the intermediate moment, the main spring 410 will still pass through the dead point position before the first shaft 501 can move to the second side of the main spring 410's axis. This causes the force applied by the main spring 410 to the second shaft 502 to change direction, making the second shaft 502 tend to move towards the open position of the output structure via the rear connecting rod 430. When the main spring 410 reaches the dead point position, it will cause the operating mechanism to jam, affecting the continuity and efficiency of the tripping operation.

[0155] In the operating mechanism 330 of the present invention, the connecting rod limiting part 344 cooperates with the front connecting rod 420. After the jump fastener 380 rotates to the jump fastener release position, it will not leave the jump fastener release position. The main spring 410 will not pass through the dead point position during the subsequent movement. The release process of the operating mechanism 330 will not be affected by the main spring 410 entering the dead point position, thus ensuring the smoothness of the release process of the operating mechanism 330 and completely eliminating or significantly reducing the rebound of the moving contact.

[0156] Specifically, the connecting rod limiting part 344 is a limiting cylinder protruding along direction d2. Two connecting rod limiting parts 344 protrude towards each other. The connecting rod limiting part 344 is either an integral structure with the bracket side plate or detachably connected to it.

[0157] Specifically, such as Figure 4 , 9As shown in Figures 12 and 14, when the front connecting rod 420 and the connecting rod limiting part 344 are in abutting engagement state, on the projection of the operating mechanism side, the first shaft 501, the second shaft 502, and the connecting rod limiting part 344 are located at the three vertices of a triangle (preferably an obtuse triangle, with the connecting rod limiting part 344 located at the obtuse vertex of the obtuse triangle). When the front connecting rod 420 and the connecting rod limiting part 344 are in abutting engagement state and on the projection of the operating mechanism side, the axis of the first shaft 501, the axis of the second shaft 502, and the abutting point of the front connecting rod 420 and the connecting rod limiting part 344 are respectively located at the three vertices of a triangle (preferably an obtuse triangle, with the abutting point of the front connecting rod 420 and the connecting rod limiting part 344 located at the obtuse vertex of the obtuse triangle). In the closed state, on the side projection of the operating mechanism 330, the connection points of the first shaft 501, the second shaft 502, the main spring 410, and the rocker arm 370 are located at the three vertices of an obtuse triangle. The first shaft 501 is located at the vertex corresponding to the obtuse angle of this obtuse triangle. The line connecting the connection point of the main spring 410 and the rocker arm 370 with the second shaft 502 coincides with the axis of the main spring 410—that is, the connection point of the main spring 410 and the rocker arm 370, and the second shaft 502 are located on the axis of the main spring 410. In the open and tripped states, on the side projection of the operating mechanism 330, the connection points of the first shaft 501, the second shaft 502, the main spring 410, and the rocker arm 370 are located at the three vertices of an obtuse triangle. The first shaft 501 is located at the vertex corresponding to the obtuse angle of this obtuse triangle. The line connecting the connection point of the main spring 410 and the rocker arm 370 with the second shaft 502 coincides with the axis of the main spring 410. On the side projection of the operating mechanism, the main spring 410 has a first side and a second side on its axis, respectively. When the operating mechanism 330 is in the closed state, the first shaft 501 is located on the first side of the axis on the side projection. When the operating mechanism 330 is in the open and tripped states, the first shaft 501 is located on the second side of the axis on the side projection. When the operating mechanism 330 trips, on the side projection, as the trip fastener 380 rotates from the trip fastener latching position to the trip fastener tripped position, the first shaft 501 moves from the first side of the axis to the second side of the axis.

[0158] like Figure 1 , 2 As shown, the device housing 310 includes a device cover 311 and a device base 312 assembled together along direction d3, forming a space for accommodating the operating mechanism 330. The device base 312 has a base shaft hole for the output gear shaft 450 to be rotatably disposed therein. The base shaft hole is engaged with the base plate shaft hole 347 of the support base plate 343 along direction d3.

[0159] like Figure 1 ,2 As shown, the operating device 300 also includes connection and fixing terminals 320 fixedly disposed on the device housing 310. Two connection and fixing terminals 320 are arranged side by side at intervals along direction d1 and disposed on one side of the operating device 300 along direction d2. The connection and fixing terminals 320 are used to weld and fix to a fixed wiring board (not shown in the figure), fixing the operating device 300 to the wiring board and preventing the operating device 300 from vibrating during operation.

[0160] Specifically, the device housing 310 also includes a device cover plate 313. In the direction d3, one end of the device cover 311 is assembled with the device base 312, and the other end is assembled with the device cover plate 313. The connecting and fixing terminal 320 is snapped between the device cover plate 313 and the device cover 311. In practical application, the switchgear of the present invention has its side with the connecting and fixing terminal 320 fixedly connected to the wiring board, and the wiring terminal at one end of the circuit of each switch unit is fixedly connected and electrically connected to the wiring board. The wiring board is electrically connected to an external circuit (e.g., a load circuit / not shown in the figure).

[0161] As an alternative fixing method for the connecting and fixing terminal 320, one end of the connecting and fixing terminal 320 is embedded in the device cover 311 by casting.

[0162] Another improvement of the present invention is the way the tripping module 100 cooperates with the operating mechanism 330.

[0163] like Figure 2 , 26 As shown in Figures -28 and -33, the tripping module 100 includes a first trip unit assembly 200 and a second trip unit assembly 250, which are respectively driven and cooperate with the locking member 400. Both the first and second trip unit assemblies 200 and 250 include electromagnetic trip units, the axis of which is perpendicular to direction d2, meaning the axis of the electromagnetic coil, the axis of the push rod, and the direction of movement of the electromagnetic trip unit are all perpendicular to direction d2. The first trip unit assembly 200 includes a first drive member 201 that is driven and cooperates with the corresponding electromagnetic trip unit. The second trip unit assembly 250 includes a second drive member 251 that is driven and cooperates with the corresponding electromagnetic trip unit. The first drive member 201 and the second drive member 251 are respectively driven and cooperate with the locking member 400. The tripping module 100 is located on one side of the operating mechanism 330 along the rotation axis (i.e., direction d2) of the locking member 400. The axis of the electromagnetic trip unit refers to the axis of the coil assembly 212 of the electromagnetic trip unit and the direction of movement of the push rod.

[0164] Specifically, the first trip unit assembly 200 and the second trip unit assembly 250 are arranged side by side along direction d3; the axial direction of the electromagnetic trip unit is the same as that of direction d1; the moving direction of the first drive member 201 and the second drive member 251 is parallel to direction d1; in direction d2, the trip module 100 is adjacent to and arranged side by side with the support rear plate 342 of the mechanism bracket 340.

[0165] The layout of the tripping module 100 and the operating mechanism 330 provides more space for the tripping module 100, which facilitates the design of the tripping module 100 itself and also helps to simplify the cooperation structure between the tripping module 100 and the locking member 400.

[0166] As an alternative implementation of the axial arrangement of the electromagnetic trip units of the first trip unit assembly 200 and the second trip unit assembly 250, in the two electromagnetic trip units, the axis of at least one electromagnetic trip unit intersects with direction d1.

[0167] As an alternative to the transmission and cooperation method between the first trip unit assembly 200, the second trip unit assembly 250 and the locking member 400, the push rod of the electromagnetic trip unit of the first trip unit assembly 200 and the push rod of the electromagnetic trip unit of the second trip unit assembly 250 are directly connected to the locking member 400 in transmission and cooperation, without the first driving member 201 and the second driving member 251.

[0168] like Figure 2 , 5As shown in Figures 25 and 33, the locking member 400 includes a first trigger portion 403 and a second trigger portion 404 that are respectively driven and cooperate with the first driving member 201 and the second driving member 251. In the direction d2, the first trigger portion 403 and the second trigger portion 404 protrude from the same side of the locking member 400. Further, the first driving member 201 has a first trigger position and a first initial position sequentially arranged along the direction d1; the first driving member 201 is configured to move from the first initial position to the first trigger position along the first direction under the drive of the corresponding electromagnetic trip unit, thereby driving the locking member 400 to rotate and release its limiting cooperation with the locking member 390. That is, the first driving member 201 reciprocates along the direction d1 and can switch between the first trigger position and the first initial position; when the electromagnetic trip unit of the first trip unit assembly 200 is activated, it drives the first trigger portion 201 to move along the first direction from the first initial position to the first trigger position, thereby driving the locking member 400 to rotate and release its limiting cooperation with the locking member 390. The second driving member 251 has a second trigger position and a second initial position sequentially arranged along direction d1. The second driving member 251 is configured to move from the second initial position to the second trigger position along a second direction under the drive of the corresponding electromagnetic trip unit, thereby driving the locking member 400 to rotate and release its limiting engagement with the locking member 390. That is, the second driving member 251 reciprocates along direction d1 and can switch between the second trigger position and the second initial position. When the electromagnetic trip unit of the second trip unit assembly 250 is activated, it drives the second driving member 251 to move along the second direction from the second initial position to the second trigger position, thereby driving the locking member 400 to rotate and release its limiting engagement with the locking member 390. The first direction and the second direction are opposite to each other.

[0169] Specifically, such as Figure 33 The directions shown are as follows: direction d1 is the left-right direction, direction d2 is the in-and-out direction, and direction d3 is the up-and-down direction. The first direction is from left to right, and the second direction is from right to left.

[0170] Specifically, the locking member 400 includes a first locking member 401, a second locking member 402, a first triggering part 403, and a second triggering part 404. The first locking member 401 and the second locking member 402 are fixedly connected at one end, and their connection point is rotatably mounted on the side plate of the mechanism bracket 340 via a locking member shaft 506. The first triggering part 403 is mounted on the first locking member 401, and the second triggering part 404 is mounted on the second locking member 402. The first triggering part 403 and the second triggering part 404 are arranged around the rotation axis of the locking member 400. A locking member limiting part is provided at the connection point of the first locking member 401 and the second locking member 402 for limiting engagement with the locking buckle 390. Furthermore, the projection direction of the operating mechanism 330 is an orthogonal projection of direction d2. The rotation axes of the first trigger part 403 and the locking member 400, and the second trigger part 404 are respectively located at the three vertices of an obtuse triangle. The rotation axis of the locking member 400 is located at the obtuse vertex of the obtuse triangle, which helps to reduce the force required to drive the locking member 400 to rotate, so that the locking member 400 can rotate with only a slight force, thereby releasing the limiting engagement with the locking member 390.

[0171] Specifically, the first trigger part 403 is a wedge-shaped protrusion, with its large-diameter end fixedly connected to the first locking part 401 and its small-diameter end engaging with the first driving part 201. The second trigger part 404 includes a first trigger part segment, a second trigger part segment, and a third trigger part segment that are bent and connected in sequence. The first trigger part segment is also fixedly connected to the second locking part 402, and the third trigger part segment is also engaging with the second driving part 251. The first trigger part segment and the third trigger part segment are both parallel to the axial direction (i.e., direction d2) of the locking part 400 and are arranged parallel and spaced apart.

[0172] The shapes of the first trigger part 403 and the second trigger part 404 can be adjusted according to actual needs.

[0173] Specifically, the connection between the first part 401 and the second part 402 of the locking member is provided with a locking member shaft hole 405 for the locking member shaft 502 to be inserted therein.

[0174] Specifically, the locking member 400 further includes a locking member travel limiting portion 406 that cooperates with the mechanism bracket 340 to limit the rotational travel of the locking member 400. The mechanism bracket 340 is provided with a locking member limiting portion 346, which cooperates with the locking member travel limiting portion 406 to limit the rotational travel of the locking member 406. Preferably, the locking member limiting portion 346 is a limiting hole, and the locking member travel limiting portion 406 is movably inserted into the limiting hole.

[0175] Specifically, the second part 402 of the locking member is provided with a locking member spring groove 407 on the side facing the locking member 390. The locking member spring groove 407 is used to cooperate with one spring arm of the return spring of the operating mechanism 330.

[0176] like Figure 27 , 30 As shown, the first driving member 201 includes a reset button 205 disposed at one end thereon. The free end of the reset button 205 protrudes outside the housing of the operating part (specifically, the tripping housing 110 of the tripping module 100), at least when the first driving member 201 is in the first trigger position. That is, when the first driving member 201 is in the first initial position, the free end of the reset button 205 can protrude outside the device housing 310 or be submerged inside the device housing 310; when the first driving member 201 is in the first trigger position, the free end of the reset button 205 must protrude outside the device housing 301, serving both as an indicator and facilitating user operation. The reset button 205 is also configured to be pressed by external force, causing the first driving member 201 to move towards the interior of the operating part's housing, thereby driving the first tripping assembly 200 to reset. When the first driving member 201 is in the first trigger position, the free end of the reset button 205 protrudes outside the trip housing 110. When the external force presses the free end of the reset button 205, the first driving member 201 is driven to reset to the first initial position. At the same time, the first driving member 201 drives the electromagnetic trip unit of the first trip unit assembly 200 to reset, thereby resetting the first trip unit assembly 200.

[0177] Specifically, the electromagnetic trip unit includes a coil assembly 210, a magnetic yoke 211, a push rod, a return spring 213, a moving iron core (not shown in the figure), a stationary iron core (not shown in the figure), and a permanent magnet (not shown in the figure); the push rod includes a push rod body 216 and a push rod connector 212, one end of the push rod body 216 is fixedly connected to the moving iron core and the other end is fixedly connected to the push rod connector 212, and the push rod connector 212 is fixedly connected to the first driving member 201; the moving iron core and the stationary iron core are both disposed in the middle of the coil assembly 210; the permanent magnet and the stationary iron core are stacked along the axial direction of the coil assembly 210 and are disposed together at one end of the axial direction of the coil 210, preferably disposed in the middle of the coil assembly 210; the magnetic yoke 211 is disposed around the coil assembly 210; the return spring 213 is sleeved on the push rod, one end of which cooperates with the push rod connector 212 and the other end of which cooperates with the coil assembly 210. Furthermore, the top rod connector 212 includes a connector sleeve and a connecting plate 215. The connecting plate 215 is fixedly disposed at one end of the connector sleeve, and the connector sleeve is sleeved on one end of the top rod body. The magnetic yoke 211 has a U-shaped structure, which includes a magnetic yoke base and a pair of magnetic yoke arms that are spaced apart from each other along the direction d3. The two ends of the magnetic yoke base are respectively bent and connected to the two magnetic yoke arms, and the two magnetic yoke arms are respectively located on both sides of the coil assembly 210 in the direction d3.

[0178] Specifically, the first driving member 201 includes a first connecting portion 202 and a first driving portion 203. The first connecting portion 202 is sleeved on one end of the corresponding electromagnetic trip unit and is fixedly connected to the top rod of the electromagnetic trip unit. The first driving portion 203 is disposed on one side of the first connecting portion 202 in direction d2. The reset button 205 is disposed on one end of the first connecting portion 202 in direction d1. Further, the first driving portion 203 includes a first driving wall 204, which is used for abutting and transmission engagement with the first trigger portion 403 of the locking member 400. The first connecting part 202 has a hopper-shaped structure, including a first end wall, a first side wall, and a first bottom wall, with two first side walls spaced apart. In the moving direction (direction d1) of the first driving member 201, one end of each of the first side wall and the first bottom wall is fixedly connected to the first end wall. A reset button 205 is located on one side of the first end wall 205, and the first end wall, the first bottom wall, and the electromagnetic trip unit are located on the other side of the first end wall. A pair of sides of the first bottom wall are bent and fixedly connected to the two first side walls. Furthermore, each of the two first side walls is provided with a first connecting groove 206. In the first trip unit assembly 200, a pair of sides of the connecting plate 215 of the electromagnetic trip unit are respectively inserted into the two first connecting grooves 206 of the first driving member 201 to achieve a fixed connection between the first driving member 201 and the electromagnetic trip unit.

[0179] like Figure 33 As shown, the second driving member 251 is in transmission cooperation with the rocker arm 370 of the operating mechanism 330. The second driving member 251 is configured to be driven by the rocker arm 370 to reset from the second trigger position to the second initial position when the rocker arm 370 drives the operating mechanism 330 to re-engage, thereby driving the second trip unit assembly 250 to reset. That is, after the second trip unit assembly 250 actuates and drives the operating mechanism 330 to trip, the rocker arm 370 swings from the tripped position to the open position to drive the operating mechanism 330 to re-engage. At the same time, the rocker arm 370 drives the second driving member 251 to reset from the second trigger position to the second initial position, and the second driving member 251 drives the corresponding electromagnetic trip unit to reset, thereby resetting the second trip unit assembly 250.

[0180] Specifically, the second driving member 251 includes a second connecting portion 252 and a second driving portion 253. The second connecting portion 252 is sleeved on one end of the corresponding electromagnetic trip unit and is fixedly connected to the top rod of the electromagnetic trip unit. In the direction d2, the second driving portion 253 is fixedly disposed on one side of the second connecting portion 252. The second driving portion 253 is used to drive the operating mechanism 330 to trip, and is also used to drive the second driving member 251 to reset by being driven by the rocker arm 370. Further, the second driving portion 253 includes a second driving wall 254 for driving the operating mechanism 330 to trip and a second reset wall 256 for transmission cooperation with the rocker arm 370. The second driving wall 254 and the second reset wall 256 are arranged sequentially along the direction d1. The second driving arm 254 is used to abut and transmit transmission with the second trigger portion 404 of the locking member 400. The rocker arm 370 also includes a rocker arm reset portion 377 fixedly disposed on the rocker arm leg, and the rocker arm reset portion 377 abuts and transmits transmission with the second reset wall 256. Furthermore, the second driving wall 254 and the second reset wall 256 are arranged parallel to each other and spaced apart. Furthermore, the second driving part 253 is an L-shaped frame structure, and the second driving wall 254 and the second reset wall 256 are a pair of parallel spaced side walls of the L-shaped frame structure.

[0181] like Figure 2 , 26 As shown in Figure -28, the tripping module 100 further includes a connecting mechanism 280. The electromagnetic tripping devices of the first tripping unit assembly 200 and the second tripping unit assembly 250 are respectively connected to the connecting mechanism 280. The connecting mechanism 280 is connected to an external circuit (not shown in the figure) to receive tripping signals. Furthermore, the connecting mechanism 280 is connected to the external circuit via a plug-in connection.

[0182] Specifically, the connection mechanism 280 includes a connection circuit board 281 and a first connection terminal 282, a second connection terminal 283, and an external connection terminal 284, all fixedly mounted on the connection circuit board 281. The first connection terminal 282 is connected to the electromagnetic trip unit of the first trip unit assembly 200 via a first wire (not shown in the figure). The second connection terminal 283 is connected to the electromagnetic trip unit of the second trip unit assembly 250 via a second wire (not shown in the figure). The external connection terminal 284 is used for plugging into and electrically connecting to an external circuit. Further, the external connection terminal 284 includes multiple pins, one end of each pin being fixedly connected to the connection circuit board 281.

[0183] like Figure 27 , 28 As shown, the connecting mechanism 280 and the second trip unit assembly 250 are arranged side by side along direction d1. Further, along direction d1, the second driving member 251 is positioned close to the connecting mechanism 281 relative to the corresponding electromagnetic trip unit.

[0184] Specifically, in the direction d1, the first driving member 201 is disposed on one end of the first trip unit assembly 200 and close to one end of the trip module 100, the connecting mechanism 280 is disposed on the other end of the trip module 100, and the second driving member 251 is disposed on one end of the second trip unit assembly 250 and close to the connecting mechanism 280.

[0185] Another improvement of the present invention is that the tripping module 100 is an independent module that can be assembled separately and then assembled with the operating device 300. This facilitates the independent assembly of the tripping module 100, which is beneficial for modular production and assembly and improves operating efficiency.

[0186] like Figure 2 , 26 As shown in Figures -28 and 31-33, the tripping module 100 further includes a tripping housing 110. The first tripping unit assembly 200, the second tripping unit assembly 250, and the connecting mechanism 280 are all disposed within the tripping housing 110. Further, the tripping unit 110 includes a tripping housing base 120 and a tripping housing cover plate 150 that are joined together along direction d2; the electromagnetic tripping units of the first tripping unit assembly 200 and the second tripping unit assembly 250, and the connecting mechanism 280 are all fixedly disposed between the tripping housing base 120 and the tripping housing cover plate 150. The tripping housing cover plate 150 has a cover plate clearance notch to allow the locking member 400 to engage with the first tripping unit assembly 200 and the second tripping unit assembly 250.

[0187] Specifically, the tripping housing 100 is fixedly connected to the device housing 310 of the operating device 300 via a snap-fit ​​structure and / or via connecting screws. The tripping housing base 120 and the tripping housing cover 150 are fixedly connected via a snap-fit ​​structure.

[0188] Specifically, the trip housing base 120 includes a first cavity 121 for accommodating a first trip unit assembly 200, a second cavity 130 for accommodating a second trip unit assembly 250, and a third cavity 140 for accommodating a connecting mechanism 280, all disposed therein. The first cavity 121 and the second cavity 130 are arranged side by side along direction d3, and the fourth cavity 140 is arranged side by side with the second cavity 130 along direction d1.

[0189] Specifically, the trip shell base 120 further includes a first channel 124 for the passage of a first wire and a second channel 133 for the passage of a second wire. The first channel 124 is connected at both ends to a first cavity 121 and a third cavity 140, respectively. The second channel 133 is connected at both ends to a second cavity 130 and a third cavity 140, respectively. Further, the first channel 124 and the first cavity 121 are arranged side-by-side along direction d1. The first channel 124 and the third cavity 140 are arranged side-by-side along direction d3, with the first channel 124 extending along direction d3 and the first channel 124 and the third cavity 140 located on the same side of the first cavity 121 and the second cavity 131 in direction d1. The second channel 133, the second cavity 130, and the first cavity 121 are arranged side-by-side sequentially along direction d3, with the second channel 133 extending along direction d1.

[0190] Specifically, the first wiring channel 124 is provided with a first wire-holding plate 125, which has a first wire-holding groove for holding a first wire, the width of which is adapted to the wire diameter of the first wire. The second wiring channel 124 is provided with a second wire-holding plate 134, which has a second wire-holding groove for holding a second wire, the width of which is adapted to the wire diameter of the second wire. The first wiring channel 124 and the second wiring channel 133 help improve the neatness of the internal wiring of the tripping module 100.

[0191] Specifically, the trip shell base 120 includes a base bottom wall and base side walls. The base bottom wall is opposite to the trip shell cover plate 150 along direction d2. The base side walls are connected end to end to form a square frame structure. One end of the square frame structure is fixedly connected to the base bottom wall, and the other end is engaged with the trip shell cover plate 150. The base side walls are provided with a bearing step and a limiting platform. The trip shell cover plate 150 is embedded in the trip shell base 120, and the side of the trip shell cover plate 150 (specifically, the cover plate body 151 of the trip shell cover plate 150) rests on the bearing step. The bearing step and the limiting platform are located on both sides of the trip shell cover plate 150, and the limiting platform is engaged with the trip shell cover plate 150 to limit the separation of the trip shell cover plate 150 from the trip shell base 120.

[0192] Specifically, the tripping housing cover 150 is provided with a cover observation window 155, which is opposite to the second wire channel 133 along direction d2, for the user to observe whether the second wire is arranged in a preset position. And / or, the tripping housing cover is provided with an observation window opposite to the first wire channel 124 along direction d2, for the user to observe whether the first wire is arranged in a preset position.

[0193] like Figures 29-31As shown, the sidewall of the first cavity 121 engages with the electromagnetic trip unit of the first trip unit assembly 200 to limit the movement of the electromagnetic trip unit along directions d1 and d3. The sidewall of the second cavity 130 engages with the electromagnetic trip unit of the second trip unit assembly 250 to limit the movement of the electromagnetic trip unit along directions d1 and d3. The trip housing base 120 and the trip housing cover 150 cooperate to limit the movement of the electromagnetic trip unit along direction d2. The sidewall of the third cavity 140 engages with the connecting mechanism 280 to limit the movement of the connecting mechanism 280 along directions d1 and d3.

[0194] Specifically, the bottom wall of the first cavity 121 (the side wall of the first cavity 121 opposite to the trip cover plate 150 along direction d2) is provided with a first axial positioning part 122 and a first radial positioning part 123. A slot 214 is provided on the side edge of the magnetic yoke arm of the electromagnetic trip unit. The first axial positioning part 122 is inserted into the slot 214 along direction d2, restricting the movement of the electromagnetic trip unit along direction d1. Along direction d3, two sets of first radial positioning parts 123 are respectively located on both sides of the two sets of magnetic yoke arms corresponding to the electromagnetic trip unit, and the two sets of first radial positioning parts 123 respectively engage with the two sets of magnetic yoke arms to limit the movement of the electromagnetic trip unit along direction d3.

[0195] Specifically, the bottom wall of the second cavity 130 (the side wall of the second cavity 130 opposite to the trip cover plate 150 along direction d2) is provided with a second axial positioning part 131 and a second radial positioning part 132. A slot 214 is provided on the side edge of the magnetic yoke arm of the electromagnetic trip unit. The second axial positioning part 131 is inserted into the slot 214 along direction d2, restricting the movement of the electromagnetic trip unit along direction d1. Along direction d3, two sets of second radial positioning parts 132 are respectively located on both sides of the two sets of magnetic yoke arms corresponding to the electromagnetic trip unit, and the two sets of second radial positioning parts 132 respectively engage with the two sets of magnetic yoke arms to limit the movement of the electromagnetic trip unit along direction d3.

[0196] Specifically, the connecting circuit board 281 of the connecting mechanism 280 is matched with the side wall of the third cavity 140 to limit the movement of the connecting mechanism 280 along directions d1 and d3. The connecting circuit board 281 is arranged perpendicular to direction d2.

[0197] Specifically, the tripping housing cover 150 includes a cover body 151 and a first pressing block 152, a second pressing block 153, and a third pressing block 154, all disposed on one side of the cover body 151. In the direction d2, the cover body 151 is opposite to the bottom wall of the tripping housing base 120. The first pressing block 152 abuts against the magnetic yoke 212 of the first tripping unit assembly 200, the second pressing block 153 abuts against the magnetic yoke 212 of the second tripping unit assembly 250, and the third pressing block 154 abuts against the connecting circuit board 281 of the connecting mechanism 280.

[0198] Specifically, the cover plate body 151 is an L-shaped plate structure, with a cover plate clearance notch formed at the inner corner of the L-shaped plate structure; the first driving part 203 of the first driving member 201 and the second driving part 253 of the second driving member 251 both correspond to the cover plate clearance notch. The first driving part 203 and the second driving part 253 are preferably located within the cover plate clearance notch.

[0199] Another improvement of this invention lies in the overall layout of the switching device.

[0200] like Figure 1 As shown, in the switching device of the present invention, the operating part and the switching part are stacked along direction d3, the tripping module 100 and the operating mechanism 330 are arranged side by side along direction d2, and the axial direction of the operating shaft 350 of the operating mechanism 330 is the same as that of direction d2.

[0201] 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.

[0202] 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. A switching device, wherein the length direction, width direction, and height direction are respectively d1, d2, and d3, and includes an operating part and a switching part stacked along the direction d3; The operating unit includes an operating mechanism (330) and a tripping module (100); the tripping module (100) is used to drive the operating mechanism (330) to trip; the operating mechanism (330) includes a support structure and an operating shaft (350) rotatably mounted on the support structure; the operating shaft (350) is configured to drive the operating mechanism (330) to close and open by reciprocating rotation; The switching unit includes n switching units, where n≥1; the switching unit is configured such that when n≥2, each switching unit is stacked sequentially along direction d3; each switching unit includes a contact system, which includes a moving contact mechanism and a stationary contact used in conjunction, wherein the rotation axis of the moving contact mechanism is the same as that of direction d3; Its features are: The tripping module (100) is arranged side by side with the operating mechanism (330) along direction d2; the rotation axis of the operating shaft (350) is the same as that of direction d2.

2. The switching device according to claim 1, characterized in that: The operating mechanism (330) further includes a jump fastener (380), a locking fastener (390), and a locking member (400) respectively rotatably mounted on the support structure; the jump fastener (380) and the locking fastener (390) are engaged in a latching engagement and the jump fastener (380) is connected to the moving contact mechanism in a transmission manner; the locking member (400) and the locking fastener (390) are engaged in a limiting engagement so that the locking fastener (390) and the jump fastener (380) maintain a latching engagement; the rotation axis of the locking member (400) is the same as the direction d2 and is configured to be driven by the release module (100) to rotate and release the limiting engagement with the locking fastener (390), allowing the jump fastener (380) and the locking fastener (390) to release their latching engagement; The tripping module (100) includes a first tripping unit assembly (200) and a second tripping unit assembly (250). Both the first tripping unit assembly (200) and the second tripping unit assembly (250) include an electromagnetic tripping unit with its axis perpendicular to direction d2. The first tripping unit assembly (200) includes a first driving member (201) that is driven in conjunction with the corresponding electromagnetic tripping unit and with the locking member (400). The second tripping unit assembly (250) includes a second driving member (251) that is driven in conjunction with the corresponding electromagnetic tripping unit and with the locking member (400).

3. The switching device according to claim 1, characterized in that: The axial direction of the coil assembly (212) of the electromagnetic trip unit is perpendicular to direction d2; the moving direction of the top rod of the electromagnetic trip unit is perpendicular to direction d2.

4. The switching device according to claim 2, characterized in that: The first trip unit assembly (200) and the second trip unit assembly (250) are arranged side by side along direction d3; the axial direction of the electromagnetic trip unit is the same as that of direction d1; the first drive member (201) is configured to move from the first initial position to the first trigger position along the first direction, thereby driving the locking member (400) to rotate so that the operating mechanism (330) is released; the second drive member (251) is configured to move from the second initial position to the second trigger position along the second direction, thereby driving the locking member (400) to rotate so that the operating mechanism (330) is released; the first direction and the second direction are both parallel to direction d1 and opposite to each other.

5. The switching device according to claim 4, characterized in that: The locking member (400) includes a first trigger part (403) and a second trigger part (404) that are respectively in transmission cooperation with the first driving member (201) and the second driving member (252). The first trigger part (403) and the second trigger part (404) are located on the same end of the locking member (400) in the direction d2 and are arranged around the rotation axis of the locking member (400). The first drive member (201) further includes a reset button (205) disposed at one end in the direction d1; the free end of the reset button (205) protrudes outside the housing of the operating part at least when the first drive member (201) is in the first trigger position; the free end of the reset button (205) is configured to move toward the inside of the housing of the operating part when pressed by an external force, so as to drive the first trip unit assembly (200) to reset.

6. The switching device according to claim 4, characterized in that: The operating mechanism (330) further includes a rocker arm (370) that is driven and linked with the operating shaft (350); the rocker arm (370) is configured to reciprocate under the drive of the operating shaft (350) to drive the operating mechanism (330) to perform closing and opening operations; the second driving member (251) is also driven and linked with the rocker arm (370) and configured to move to the second initial position under the drive of the rocker arm (370) when the rocker arm (370) drives the operating mechanism (330) to re-lock, so as to drive the second trip unit assembly (250) to reset.

7. The switching device according to claim 2, characterized in that: The operating mechanism also includes a rocker arm (370) rotatably mounted on the support structure, a spring assembly for providing driving force for the closing, opening, and tripping operations of the operating mechanism, a front link (420), a rear link (430), and an output structure linked with the moving contact mechanism; the jump fastener (380) has one end engaged with the locking fastener (390) along its length, the middle part rotatably connected to the front link (420) via a first shaft (501), and the other end rotatably mounted on the support structure; the front link (420) has one end rotatably connected to the jump fastener (380) via a first shaft (501) along its length, and the other end rotatably mounted on the support structure; the front link (420) has one end rotatably connected to the jump fastener (380) via a first shaft (501) along its length, and the other end via... The second shaft (502) is rotatably connected to one end of the rear connecting rod (430); the other end of the rear connecting rod (430) is rotatably connected to the output structure; the spring assembly includes a main spring (410); the main spring (410) is configured such that one end is connected to the second shaft (502) and the other end is connected to the rocker arm (370), and that it stores energy and then releases energy when the operating mechanism closes and opens; the operating shaft (350) is driven and linked with the rocker arm (370); the operating shaft (350) is configured to drive the rocker arm (370) to reciprocate through reciprocating rotation, so as to drive the operating mechanism to perform closing and opening operations; the output structure is linked with the moving contact mechanism.

8. The switching device according to claim 7, characterized in that: The output structure includes a transmission gear (440) and an output gear shaft (450) that mesh and drive each other and are rotatably mounted on a support structure; one end of the rear connecting rod (430) is rotatably connected to the front connecting rod (420) via a second shaft (502), and the other end is rotatably connected to the transmission gear (440) to drive the transmission gear (440) to rotate; the rotation axis of the transmission gear (440) is the same as the direction d2; the rotation axis of the output gear shaft (450) is the same as the direction d3.

9. The switching device according to claim 8, characterized in that: The rotational axes of the operating shaft (350), rocker arm (370), jump fastener (380), locking fastener (390), locking element (400), and transmission gear (440) are all the same as direction d2; the operating shaft (350) and transmission gear (440) are coaxially arranged.

10. The switching device according to claim 9, characterized in that: The support structure includes a mechanism bracket (340), which includes two bracket side plates that are spaced apart from each other along the direction d2; The transmission gear component (440) includes a transmission shaft (441), a transmission connection part (442), and a transmission gear part (443); one end of the transmission connection part (442) is fixedly connected to the transmission shaft (441), and the other end is rotatably connected to the rear connecting rod (430); the transmission gear part (443) is fixedly mounted on the transmission connection part (441), and the transmission gear part (443) and the transmission connection part (441) are coaxially mounted; both ends of the transmission connection part (441) are rotatably mounted on two support side plates respectively; the transmission connection part (441) has a transmission shaft clearance hole (445) in the middle for the operating shaft (350) to pass through. The transmission gear (440) is configured to switch between the closed position and the open position of the transmission gear by reciprocating rotation; The transmission gear component (440) further includes a transmission gear component mating part (444); the transmission gear component mating part (444) is configured to engage with the support structure to prevent the transmission gear component (440) from continuing to rotate when the transmission gear component (440) rotates to the transmission gear component closed position, and to engage with the support structure to prevent the transmission gear component (440) from continuing to rotate when the transmission gear component (440) rotates to the transmission gear component open position; The support structure includes a mechanism bracket (340), which includes two bracket side plates spaced apart along direction d2. The two ends of the transmission gear (440) are rotatably mounted on the two bracket side plates. The transmission gear mating part (444) is mounted on the axial end of the transmission gear (440). The bracket side plate is provided with a bracket notch for the transmission gear mating part to move therein. The side wall of the bracket notch is provided with a bracket closing positioning surface (348) and a bracket opening positioning surface (349). The transmission gear mating part (444) is configured to abut against the bracket closing positioning surface (348) to limit the transmission gear (440) when the transmission gear (440) rotates to the transmission gear closing position to prevent the transmission gear (440) from continuing to rotate, and abut against the bracket opening positioning surface (349) to limit the transmission gear (440) when the transmission gear (440) rotates to the transmission gear opening position to prevent the transmission gear (440) from continuing to rotate. The transmission gear component mating part (444) has a mating part closing position and a mating part closing position corresponding to the transmission gear component closing position and the transmission gear component opening position, respectively; the operating mechanism also includes a closing assist component disposed on the operating shaft (350) and rotating synchronously therewith. The closing assist component includes a closing assist part, which is used to apply a force to the transmission gear component mating part (444). This force is used to drive the transmission gear component mating part (444) to drive the transmission gear component (440) to rotate toward the transmission gear component opening position; the mating part closing position is located on the movement path of the closing assist part; The rocker arm (370) includes two rocker arm legs arranged opposite each other along direction d2, a rocker arm beam (373), and a rocker arm connecting part (375); one end of each of the two rocker arm legs is bent and fixedly connected to the rocker arm beam (373), and the other end is rotatably mounted on the two support side plates; one end of the main spring (440) is connected to the second shaft (502) and the other end is connected to the rocker arm beam (373); the operating mechanism also includes at least one set of transmission components (360) that cooperate one-to-one with the rocker arm legs. The transmission component (360) includes a transmission wheel (361) and a transmission connecting rod (362). The transmission wheel (361) is mounted on the operating shaft (350) and rotates synchronously with it. The two ends of the transmission connecting rod (362) are rotatably connected to the transmission wheel (361) and the corresponding rocker arm leg, respectively; the tripping assist component is served by the transmission wheel (361).

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