Isolating switch provided with forced tripping mechanism

Abstract

The utility model belongs to the field of low-voltage switches, and particularly relates to an isolating switch with a forced tripping mechanism, which comprises an operation module, the operation module comprises a linkage piece, a kick piece, an energy-gathering elastic piece arranged between the linkage piece and the kick piece and used for driving the kick piece to act, a stop device used for locking the kick piece, and the forced tripping mechanism, the forced tripping mechanism comprises a breaking part arranged on the kick piece and a pushing part arranged on the linkage piece, the linkage piece is provided with a forced tripping driving position, and when the linkage piece is in the forced tripping driving position and the kick piece is kept at the switching-on position, the breaking part is matched with the pushing part to enable the kick piece and the linkage piece to form a one-way linkage relation in the switching-off state direction. According to the utility model, under the condition that the driving force released by the energy-gathering elastic piece is not enough to overcome the pseudo soldering force between the moving contact and the static contact when the contact is subjected to pseudo soldering, the moving contact and the static contact are forcibly separated, so that the service life of the switch is prolonged, the false breaking problem of the contact is avoided, and the personal safety is protected.

Description

Technical Field

[0001] This utility model belongs to the field of low-voltage switches, specifically relating to an isolating switch equipped with a forced disconnection mechanism. Background Technology

[0002] Disconnect switches are used to prevent or allow current flow when energized, achieving reliable isolation between energized and de-energized parts in power distribution equipment. They are widely used in power systems such as photovoltaic and wind power. To achieve rapid disconnection during opening and closing operations, a tripping mechanism is typically incorporated into the operating module of a disconnect switch. This mechanism usually includes a linkage component linked to the input shaft, a tripping component linked to the output shaft, and an energy-concentrating elastic component connecting the linkage component and the tripping component. During opening and closing operations, the tripping component is locked in place, while the linkage component moves first, causing the energy-concentrating elastic component to store energy. When the linkage component moves close to the opening / closing position, it releases the locking effect on the tripping component, releasing the energy and causing the tripping component to move, thus rapidly opening and closing the moving contact. This is exemplified by the disconnect switch structures disclosed in patents CN202123242505.3 and CN202221000698.3. The aforementioned disconnector switch with a snap-action mechanism can achieve rapid opening and closing, effectively reducing the problems of contact burn-out and welding. However, the inventors have further discovered that the opening and closing rotation of the moving contact in the disconnector switch with the snap-action mechanism relies entirely on the energy release of the energy-concentrating elastic element. Therefore, the following problems still exist: When the disconnector switch is opening or closing, there is a certain probability that due to improper human operation or some special reasons, the contacts may develop poor welding. When the switch is in the closed state, and the moving and stationary contacts have poor welding, the driving force of the energy release of the energy-concentrating elastic element is insufficient to overcome the poor welding force between the moving and stationary contacts, thus failing to open normally. More importantly, at this time, the switch is in the indicated open position, but the internal switch is still in the closed state, posing a risk to personnel safety. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an isolating switch with a forced disconnection mechanism.

[0004] The technical solution adopted by this utility model is as follows: A disconnecting switch with a forced disconnection mechanism includes an operating module. The operating module includes a linkage, a snap-action component, an energy-concentrating elastic component disposed between the linkage and the snap-action component for driving the snap-action component, and a stop device for locking the snap-action component. The operating module has an open state and a closed state. When the operating module is in the open state or the closed state, the snap-action component is locked to remain inactive. The linkage is driven to move from the closed position to the open position or from the open position to the closed position, causing the energy-concentrating elastic component to complete energy storage. During the movement of the linkage from the closed position to the open position... The circuit breaker has a tripping unlocking trigger position and a closing unlocking trigger position when moving from the tripping position to the closing position. The linkage between the tripping unlocking trigger position and the closing unlocking trigger position cooperates with a stop device to release the stop device from locking the snap-action member. The circuit breaker also includes a forced release mechanism, which includes a breaking part on the snap-action member and a pushing part on the linkage. The linkage has a forced release drive position on the path from the tripping unlocking trigger position to the tripping position. When the linkage is in the forced release drive position and the snap-action member is in the closing position, the breaking part and the pushing part cooperate to form a one-way linkage relationship between the snap-action member and the linkage in the direction of the tripping state.

[0005] More preferably, the snap-action member moves linearly along the first direction X, with the two ends of the sliding path being the open and closed positions, respectively. The snap-action member has two oppositely arranged side plates. The linkage member is disposed between the two oppositely arranged side plates of the snap-action member and cooperates with the snap-action member to limit the movement of the linkage member so that it can only slide linearly along the first direction X, with the two ends of the sliding path being the open and closed positions, respectively. The side of the linkage member protrudes to form a push block. The side plate of the snap-action member is provided with a third sliding groove into which the push block extends. The end of the third sliding groove near the open position forms a break section. When the linkage member moves from the open position to the open unlock trigger position and from the closed position to the closed unlock trigger position, the push block slides in the third sliding groove. When the linkage member is in the forced disengagement drive position and the snap-action member remains in the closed position, the push block abuts against the break section.

[0006] In a further preferred embodiment, both side plates are provided with a third sliding groove, and both sides of the linkage component have protrusions.

[0007] More preferably, the linkage component is provided with a spring mounting groove, and the two ends of the spring mounting groove respectively form a first abutting surface and a second abutting surface;

[0008] The inner walls of the two side plates of the jumper are provided with second sliding grooves at positions corresponding to the spring mounting grooves. The two ends of the second sliding grooves along the first direction X respectively form a first abutment surface and a second abutment surface.

[0009] The energy-concentrating elastic element is a compression spring, which is confined within the spring mounting groove and protrudes on both sides relative to the two sides of the linkage element. The protruding part of the energy-concentrating elastic element relative to the side of the linkage element is matched with the second sliding groove for limiting, so that the energy-concentrating elastic element can only perform extension and retraction movements in the first direction X.

[0010] More preferably, the stopping device includes a closing limit component and a closing limit component;

[0011] The closing limiter is movable and has a locked position and an unlocked position. When the closing limiter is in the locked position, it locks the snap-action component in the open position, preventing it from moving in the closing direction. When the closing unlock trigger position is triggered, the linkage component cooperates with the closing limiter to push the closing limiter to the unlocked position.

[0012] The tripping limiter is movable and has a locked position and an unlocked position. When the tripping limiter is in the locked position, it locks the snap-action member in the closed position, preventing it from moving in the tripping direction. When the tripping unlocking trigger position is triggered, the linkage member cooperates with the tripping limiter to push the tripping limiter to the unlocked position.

[0013] The closing limit and the opening limit are respectively connected to the limiting elastic element, which keeps the opening limit and the closing limit in the locked position under the action of the limiting elastic element.

[0014] More preferably, both the closing limiter and the opening limiter have a rotating shaft with its central axis oriented along a second direction Y perpendicular to the first direction X, and a stopper connected to the rotating shaft. The rotating shaft is inserted into the inner wall of the housing assembly so that the opening limiter can rotate around its central axis.

[0015] The jumper has a closing limiter mating groove and a opening limiter mating groove at both ends along the first direction X, which cooperate with the closing limiter and the opening limiter, respectively. The closing limiter mating groove has a first limit block that can abut against the closing limiter in the locked position and a first release surface that can cooperate with the closing limiter in the unlocked position. The first limit block is set closer to the outer end relative to the first release surface. The opening limiter mating groove has a second limit block that can abut against the opening limiter in the locked position and a second release surface that can cooperate with the opening limiter in the unlocked position. The second limit block is set closer to the outer end relative to the second release surface.

[0016] More preferably, the operation module includes a housing assembly, a rotary motion input shaft, and a rotary motion output shaft. The housing assembly is provided with an operation through hole that limits and cooperates with the rotary motion input shaft and a drive through hole that limits and cooperates with the rotary motion output shaft.

[0017] The jumper is confined within the housing assembly so that it can move linearly along the first direction X. A first transmission structure is provided between the linkage and the rotary motion input shaft. The first transmission structure converts the rotational motion of the rotary motion input shaft into linear motion of the linkage along the first direction X. A second transmission structure is provided between the jumper and the rotary motion output shaft. The second transmission structure converts the linear motion of the jumper along the first direction X into rotational motion of the rotary motion output shaft.

[0018] More preferably, the first transmission structure includes a first gear, a second gear, and a rack that are meshed together in sequence. The first gear is a bevel gear with its central axis arranged along a third direction Z. The second gear is a bevel gear with its central axis arranged along a second direction Y perpendicular to the first direction X. The rack is fixedly connected to a linkage member. The first gear is provided with a first rotational motion input shaft with its rotation center in a third direction Z perpendicular to the first direction X and the second direction Y.

[0019] More preferably, the second transmission structure includes a driving member, the driving member including a connecting platform, the connecting platform having a rotating output shaft with a central axis along a second direction Y perpendicular to the first direction X and a driving block, the rotating output shaft being limited by a driving through hole so that the driving member can only rotate around the central axis of the rotating output shaft, the jumper having a U-shaped driving groove, the driving block cooperating with the driving groove to form the jumper sliding along the first direction X to drive the driving member to rotate around the central axis along the second direction Y.

[0020] The beneficial effects of this utility model are as follows: This utility model improves the disconnecting switch that relies solely on the energy release of the energy-concentrating elastic element to drive the opening and closing of the moving contact. It sets up a forced disconnection mechanism to ensure that when a contact weld failure occurs, the driving force of the energy release of the energy-concentrating elastic element is insufficient to overcome the weld failure force between the moving and stationary contacts, thus enabling a forced disconnection between the moving and stationary contacts. This improves the service life of the switch, avoids the problem of "false" contact disconnection, and protects personal safety. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0022] Figure 1 This is a schematic diagram of the structure of a photovoltaic disconnecting switch in one embodiment of the present invention;

[0023] Figure 2 This is an exploded view of the operation module in one embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the operation module in one embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the bottom shell structure in one embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the shell cover in one embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the output transmission component in one embodiment of the present invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the jumper at one angle in one embodiment of the present invention;

[0029] Figure 8 This is a three-dimensional structural diagram of the jumper from another angle in one embodiment of the present invention;

[0030] Figure 9 This is a cross-sectional view of the jumper in one embodiment of the present invention;

[0031] Figure 10 This is a top view of the jumper in one embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the linkage component in one embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of the structure of the linkage component and the energy-concentrating elastic component in one embodiment of the present invention;

[0034] Figure 13 This is a schematic diagram of the closing limiter and the opening limiter in one embodiment of the present invention;

[0035] Figure 14 This is a schematic diagram showing the closing limit component in the locked position in one embodiment of the present invention;

[0036] Figure 15 This is a schematic diagram showing the closing limit component in the unlocked position in one embodiment of the present invention;

[0037] Figure 16 This is a schematic diagram of the structure of the driving component in one embodiment of the present invention;

[0038] Figure 17 This is a cross-sectional view of the operation module in the open state in one embodiment of the present invention;

[0039] Figure 18This is a cross-sectional view of the operation module in the closed state in one embodiment of the present invention;

[0040] Figure 19 This is a schematic diagram of the operation of the forced release mechanism of the operation module in one embodiment of the present invention;

[0041] In the diagram, the components are: operating module-100, contact module-200, bottom shell-310, first operating half-hole-311, second operating through-hole-312, first drive through-hole-313, first positioning hole one-314, second positioning hole one-315, first limit strip-316, shell cover-320, second operating half-hole-321, second drive through-hole-322, first positioning hole two-323, second positioning hole two-324, second limit strip-325, and so on. Gear 410, First Rotary Input Unit 411, Second Gear 420, Second Rotary Input Unit 421, Rack 430, Jumper 510, Drive Slot 511, Closing Limiting Part Mating Slot 512, First Limiting Block 5121, First Release Surface 5122, Opening Limiting Part Mating Slot 513, Second Limiting Block 5131, Second Release Surface 5132, First Guide Slot 514, Second Guide Slot 515, ... 516 - First sliding groove, 517 - Second sliding groove, 5171 - First abutment surface, 5172 - Second abutment surface, 518 - Through groove, 519 - Third sliding groove, 5191 - Separation part, 520 - Linkage component, 521 - Spring mounting frame, 521 - First abutment surface, 5212 - Second abutment surface, 522 - Limiting block, 523 - Push block, 524 - First push block, 525 - Second push block, 530 - Closing limit component, Connecting plate -531, Extension component -532, Rotating shaft -533, Fixed shaft -534, Blocking component -535, Limiting protrusion -536, Opening limit component -540, Limiting elastic component -550, Energy-concentrating elastic component -560, Driving component -600, Connecting column -610, First connecting platform -620, First driving block -621, First rotary output shaft -622, Second connecting platform -630, Second driving block -631, Second rotary output shaft -632. Detailed Implementation

[0042] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0043] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0044] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, and side, are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0045] In this embodiment, the first direction X, the second direction Y, and the third direction Z are mutually perpendicular.

[0046] A photovoltaic disconnect switch, such as Figure 1 As shown, it includes an operation module 100 and a contact module 200.

[0047] like Figure 2 , Figure 3 As shown, the operation module 100 includes a housing assembly, an output transmission assembly, a snap-action mechanism, and a drive component 600.

[0048] The housing assembly includes a bottom shell 310 and a cover 320, which are connected to form a chamber for mounting the output transmission assembly, the snap-action mechanism, and the drive component. Figure 4 As shown, the bottom shell 310 is provided with a first operating half-hole 311, a second operating through hole 312, a first driving through hole 313, a first positioning hole 314, a second positioning hole 315, and a first limiting strip 316. The first operating half-hole 311 is disposed on one side wall of the bottom shell 310. The second operating through hole 312 and the first driving through hole 313 are circular holes located at different positions on the bottom plate of the bottom shell 310, and their central axis direction is along the second direction Y. The first positioning hole 314, the second positioning hole 315, and the first limiting strip 316 are all disposed on the bottom plate of the bottom shell 310. Figure 5 As shown, the cover 320 is provided with a second operating half hole 321, a second driving through hole 322, a second first positioning hole 323, a second second positioning hole 324, and a second limiting strip 325. The second operating half hole 321 is provided on one side wall of the cover 320 and, after engaging with the first operating half hole 311, forms a first operating through hole with its central axis along the third direction Z. The second driving through hole 322 is a circular hole provided on the bottom plate of the cover 320 with its central axis along the second direction Y. The second driving through hole 322 and the first driving through hole 313 are concentric circular holes. The second first positioning hole 323, the second second positioning hole 324, and the second limiting strip 325 are all provided on the bottom plate of the cover 320. The first first positioning hole 314 and the first second positioning hole 323 are concentrically arranged to form a set of first positioning holes, and the first second positioning hole 323 and the second second positioning hole 324 are concentrically arranged to form a set of second positioning holes.

[0049] like Figure 6As shown, the output transmission assembly includes a first gear 410, a second gear 420, and a rack 430 that mesh sequentially. The first gear 410 is a bevel gear with its central axis arranged along a third direction Z, and has a first rotary input section 411 with its central axis also arranged along the third direction Z. The first rotary input section 411 is configured corresponding to a first operating through hole, and the first gear 410 can be rotated around the third direction Z by driving the first rotary input section 411. The second gear 420 is a bevel gear with its central axis arranged along a second direction Y, and has a second rotary input section 421 with its central axis also arranged along the second direction Y. The second rotary input section 421 is configured corresponding to a second operating through hole 312, and the second gear 420 can be rotated around the second direction Y by driving the second rotary input section 421. The rack 430 can slide in a first direction X. Both the first rotary input section 411 and the second rotary input section 421 can be used to connect to a drive mechanism to realize the input of the opening and closing action of the operation module 100. The rack 430 is driven to slide in the first direction X through gear transmission. The drive mechanism can be an operating handle or an electric drive mechanism.

[0050] The snap-start mechanism includes a snap-start component 510, a linkage component 520, a closing limit component 530, a opening limit component 540, a limit elastic component 550, and an energy-concentrating elastic component 560.

[0051] like Figures 7-10 As shown, the jumper 510 is a U-shaped component consisting of a base plate and two oppositely arranged side plates connected together. Figure 7 , Figure 8 As shown, the outer side walls of the two side plates of the snap-action member 510 are provided with a U-shaped drive groove 511 with an open top in the middle. The two ends of the outer side walls of the two side plates are respectively provided with a closing limit member mating groove 512 and a opening limit member mating groove 513. The closing limit member mating groove 512 is L-shaped, with a first limiting block 5121 near the lower end and relatively near the outer end, and a first release surface 5122 near the upper end and relatively near the inner end. The opening limit member mating groove 513 is L-shaped, with a second limiting block 5131 near the lower end and relatively near the outer end, and a second release surface 5132 near the upper end and relatively near the inner end. A first guide groove 514 and a second guide groove 515 are respectively formed on the outer side walls of the two side plates. The first guide groove 514 and the second guide groove 515 cooperate with the first limiting strip 316 of the bottom shell 310 and the second limiting strip 325 of the shell cover 320 to limit the sliding movement of the snap-action member 510 along the first direction X. Figure 9 , Figure 10As shown, the inner sidewalls of the two side plates of the jump member 510 are provided with a first sliding groove 516 and a second sliding groove 517 arranged along the first direction X. The second sliding groove 517 is located above the first sliding groove 516 and is provided with a through groove 518 to connect the two. The upper part of the second sliding groove 517 is open, and the two ends of the second sliding groove 517 respectively form a first abutting surface 5171 and abutting surface 5172.

[0052] like Figure 11 As shown, the linkage 520 is provided with a spring mounting frame 521. The spring mounting frame 521 is hollow to form a spring mounting groove, and the two ends of the spring mounting groove along the first direction X respectively form a first abutment surface 5211 and a second abutment surface 5212. The rack 430 is fixed on the linkage 520 and the two are linked and engaged. Specifically, the rack 430 and the linkage 520 adopt an integrally formed fixed connection structure. A limiting block 522 is protruding on the side wall of the linkage 520. The linkage 520 is disposed between the two side plates of the jumper 510, and the limiting block 522 is limited within the first sliding groove 516 so that the linkage 520 and the jumper 510 form a limited sliding engagement along the first direction X. The upper ends of the linkage 520 have two upward protrusions forming a first push block 524 and a second push block 525, respectively.

[0053] like Figure 12 As shown, the energy-concentrating elastic element 560 is a compression spring, which is disposed in the spring mounting groove of the spring mounting frame 521 of the linkage 520 and its two sides protrude relative to the two sides of the linkage 520. The part of the energy-concentrating elastic element 550 that protrudes relative to the side of the linkage 520 is limited and cooperates with the second sliding groove 517, so that the energy-concentrating elastic element 550 can only perform extension and retraction movements in the first direction X. During the relative sliding process between the linkage 520 and the jumper 510, the energy-concentrating elastic element 560 can store / release energy by changing the relative positions of the first abutment surface 5211 and the second abutment surface 5212, the first abutment surface 5171 and the second abutment surface 5172. During assembly, the energy-concentrating elastic element 560 is first installed into the spring mounting groove of the linkage element 520. Then, the linkage element 520 and the energy-concentrating elastic element 560 are installed from the opening above the jumper element 510. The opening above the second sliding groove 517 facilitates the installation of the energy-concentrating elastic element 560. The through groove 518 facilitates the limiting block 522 to enter the first sliding groove 516 through the second sliding groove 517.

[0054] The structures of the closing limiter 530 and the opening limiter 540 are as follows: Figure 13As shown, the device includes a connecting plate 531 and two extension members 532 spaced apart on the upper end of the connecting plate 531. The outer ends of the extension members 532 protrude to form rotating shafts 533 with their central axes along the second direction Y. The rotating shafts 533 of the closing limit member 530 and the opening limit member 540 are respectively positioned and engaged with the first and second positioning holes of the housing assembly, allowing the closing limit member 530 and the opening limit member 540 to rotate around their respective rotating shafts 533. The inner end of one extension member 532 protrudes to form a fixed shaft 534 along the second direction Y, and a gap is formed between the fixed shaft 534 and the other extension member 532. The two sides of the connecting plate 531 protrude to form two opposing abutments 535. The outer ends of the abutments 535 are smooth convex surfaces. The connecting plate 531 forms a limiting protrusion 536 between the two abutments 535. The closing limit member 530 has the following characteristics: Figure 14 The locking position shown and as Figure 15 The unlocked position is shown. In the locked position, the force center B of the abutment 535 is lower than the rotation pivot A; in the unlocked position, the force center B of the abutment 535 is higher than the rotation pivot A. The same applies to the opening limit member 540. The limiting elastic member 550 is a torsion spring, sleeved outside the fixed shaft 534, with both ends abutting against the inner wall of the housing assembly and the connecting plate 531, respectively. The limiting elastic member 550 maintains the locked position of the closing limit member 530 and the opening limit member 540. Figure 3 As shown, the closing limiter 530 and the opening limiter 540 are respectively disposed on both sides of the jumper 510. The abutment 535 of the closing limiter 530 and the abutment 535 of the opening limiter 540 cooperate with the closing limiter groove 512 and the opening limiter groove 513 of the jumper 510. When the closing limiter 530 is in the locked position and the jumper 510 is in the open position, the first limit block 5121 of the closing limiter 530 and the closing limiter groove 512 abuts against the jumper 510 to limit it from moving in the closing direction. When the jumper 510 is in the open position, the closing limiter 530 abuts against the first limit block 5121 of the closing limiter groove 512 to limit the jumper 510 and prevent it from moving in the closing direction. When the limiter 540 is in the locked position and the jumper 510 is in the closed position, the opening limiter 540 cooperates with the second limiter block 5131 of the opening limiter groove 513 to form a limit, preventing it from moving in the opening direction. The limiter protrusion 536 of the closing limiter 530 and the limiter protrusion 536 of the opening limiter 540 cooperate with the first pusher block 524 and the second pusher block 525 on both sides of the upper end of the linkage 520, so that the linkage 520 can slide along the first direction X to push the closing limiter 530 and the opening limiter 540 from the locked position to the unlocked position.

[0055] The structure of the driving component 600 is as follows: Figure 16As shown, it includes a connecting post 610 and a first connecting platform 620 and a second connecting platform 630 respectively connected to both ends of the connecting post 610. A first rotary output shaft 622 and a second rotary output shaft 632 are concentrically formed protruding from the outer sides of the first connecting platform 620 and the second connecting platform 630. A first driving block 621 and a second driving block 631 are eccentrically formed protruding from the inner sides of the first connecting platform 620 and the second connecting platform 630. The first rotary output shaft 622 and the second rotary output shaft 632 are respectively inserted into the first driving through hole 313 and the second driving through hole 322 of the housing assembly to drive the member 600. It can only rotate around the central axis of the first driving through hole 313 and the second driving through hole 322. The first connecting platform 620 and the second connecting platform 630 are respectively located on the outer side of the two side plates of the jumper. The first driving block 621 and the second driving block 631 respectively cooperate with the two driving slots 511 of the jumper 510, forming that the jumper 510 slides along the first direction X to drive the drive member 600 to rotate around the central axis along the second direction Y. The outer ends of the first rotating output shaft 622 and the second rotating output shaft 632 of the drive member 600 are provided with driving connecting slots, and both can be used as driving shafts of the drive contact module 200. That is, the driving mechanism of this embodiment can be as follows. Figure 1 As shown, the contact module 200 can be set on only one side, or the contact module 200 can be set on both sides at the same time to form the function of central torque output.

[0056] The opening and closing process of this embodiment is as follows: The position of the operating mechanism in the open state in this embodiment is as follows: Figure 17As shown, at this time, both the snap-start component 510 and the linkage component 520 are located on the far left. The closing limit component 530 located on the right is locked under the action of the limiting elastic component 550 set on it. The blocking component 535 of the closing limit component 530 abuts against the first limiting block 5121 of the closing limit component mating groove 512 on the right side of the snap-start component 510. Since the force application center B of the blocking component 535 is lower than the rotation pivot A, the snap-start component 510 and the closing limit component 530 form a mutual locking effect. The opening limit component 540 located on the left side abuts against the second release surface 5132 of the opening limit component mating groove 513 on the left side of the snap-start component 510 under the action of the second push block 525 of the linkage component 520. The energy-gathering elastic component 560 is in the energy-releasing state. When the closing drive is activated, the output transmission assembly moves the linkage 520 to the right. The jumper 510 remains stationary under the lock of the closing limiter 530. The energy-gathering elastic member 560 compresses and stores energy. When the linkage 520 moves to the right until its right end's first push block 524 abuts against the limiting protrusion 536 of the closing limiter 530, it pushes the closing limiter 530 to rotate to the unlocked position. Since the force center B of the stop 535 is higher than the rotation pivot A, the jumper 510 and the closing limiter 530 interact. The stop 535 of the closing limiter 530 swings away from the first limit block 5121. The energy-gathering elastic member 560 releases energy, causing the jumper 510 to move to the right, which in turn causes the drive 600 to rotate and output the closing action. Figure 18 The position shown is in the closed state. At this time, both the snap-on component 510 and the linkage component 520 are located on the far right. The opposite is true for the opening operation.

[0057] In this embodiment, the operating mechanism enables the contact mechanism to quickly open and close via a snap-action mechanism, avoiding adverse interference from human factors. When closing, the contacts quickly connect without any partial connection, ensuring stable contact pressure and preventing welding problems. When opening, the contacts quickly break apart, resulting in a short arcing time and minimal damage to the contacts from the arc, thus improving the service life of the switch.

[0058] When a cold solder joint occurs in the switch, the driving force released by the energy-concentrating elastic element 560 of the snap-action mechanism may be insufficient to drive the contacts to open. To address this issue, this embodiment also includes a forced release mechanism between the snap-action element 510 and the linkage element 520. Specifically, as follows... Figure 7 , Figure 8 As shown, a third sliding groove 519 is formed in the middle of the upper part of the two side plates of the snap-action member 510, and the end of the third sliding groove 519 near the opening position constitutes the break section 5191, as shown. Figure 11As shown, a push block 523 is protruding on the side wall of the linkage 520. During the normal opening and closing of the switch, the push block 523 slides within the third sliding groove 519. When the switch is in the closed state, and a cold solder joint occurs between the moving and stationary contacts, the output transmission assembly causes the linkage 520 to move, pushing the opening limit member 540 to rotate and releasing the lock on the snap-action member 510. Because of the cold solder joint, the snap-action structure will not snap-action, and the contact mechanism will not open, continuing to rotate and drive, as... Figure 19 As shown, the push block 523 of the linkage 520 contacts the breaking part 5191 of the snap-action member 510 and causes the snap-action member 510 to move towards the tripping limit member 540 through the breaking part 5191. The snap-action member 510 transmits force to the moving and stationary contacts through the drive member 600 and the contact mechanism. When the force is sufficient to overcome the false welding force between the moving and stationary contacts, the moving and stationary contacts separate and the switch trips.

[0059] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A disconnecting switch with a forced release mechanism, comprising an operating module, the operating module including a linkage, a snap-action member, an energy-concentrating elastic member disposed between the linkage and the snap-action member for driving the snap-action member to move, and a stop device for locking the snap-action member, the operating module having an open state and a closed state, wherein when the operating module is in the open state or the closed state, the snap-action member is locked to remain inactive, and the linkage is driven to move from the closed position to the open position or from the open position to the closed position so that the energy-concentrating elastic member completes energy storage, the linkage having an open unlock trigger position when moving from the closed position to the open position and a closed unlock trigger position when moving from the open position to the closed position, the linkage at the open unlock trigger position and the closed unlock trigger position cooperating with the stop device to release the lock of the snap-action member by the stop device, characterized in that: It also includes a forced disconnection mechanism, which includes a breaking part disposed on the snap-action member and a pushing part disposed on the linkage member. The linkage member has a forced disconnection drive position in the path from the trip unlocking trigger position to the trip position. When the linkage member is in the forced disconnection drive position and the snap-action member is in the closed position, the breaking part and the pushing part cooperate to make the snap-action member and the linkage member form a one-way linkage relationship in the direction of the trip state.

2. The disconnector provided with a forced opening mechanism according to claim 1, characterized in that: The snap-action component moves linearly along the first direction X, with the open and closed positions at both ends of the sliding path. The snap-action component has two opposing side plates. The linkage component is disposed between the two opposing side plates of the snap-action component and cooperates with the snap-action component to limit the movement of the linkage component so that it can only slide linearly along the first direction X, with the open and closed positions at both ends of the sliding path. The side of the linkage component protrudes to form a push block. The side plate of the snap-action component is provided with a third sliding groove into which the push block extends. The end of the third sliding groove near the open position forms a break section. When the linkage component moves from the open position to the open unlock trigger position and from the closed position to the closed unlock trigger position, the push block slides in the third sliding groove. When the linkage component is in the forced disengagement drive position and the snap-action component remains in the closed position, the push block abuts against the break section.

3. The disconnector provided with a forced opening mechanism according to claim 2, characterized in that: Both side plates are provided with a third sliding groove, and both sides of the linkage have protrusions.

4. The disconnector provided with a forced opening mechanism according to claim 2, characterized in that: The linkage component is provided with a spring mounting groove, and the two ends of the spring mounting groove respectively form a first abutting surface and a second abutting surface. The inner walls of the two side plates of the jumper are provided with second sliding grooves at positions corresponding to the spring mounting grooves. The two ends of the second sliding grooves along the first direction X respectively form a first abutment surface and a second abutment surface. The energy-concentrating elastic element is a compression spring, which is confined within the spring mounting groove and protrudes on both sides relative to the two sides of the linkage element. The protruding part of the energy-concentrating elastic element relative to the side of the linkage element is matched with the second sliding groove for limiting, so that the energy-concentrating elastic element can only perform extension and retraction movements in the first direction X.

5. The disconnector provided with a forced opening mechanism according to claim 2, characterized in that: The stopping device includes a closing limit component and a opening limit component; The closing limiter is movable and has a locked position and an unlocked position. When the closing limiter is in the locked position, it locks the snap-action member in the open position, preventing it from moving. When the linkage member in the closing unlock trigger position cooperates with the closing limiter, the linkage member that moves further toward the closing position pushes the closing limiter to the unlocked position. The tripping limiter is movable and has a locked position and an unlocked position. When the tripping limiter is in the locked position, it locks the snap-action member in the closed position, preventing it from moving. When the tripping unlocking trigger position is triggered, the linkage member cooperates with the tripping limiter to push the tripping limiter to the unlocked position. The closing limit and the opening limit are respectively connected to the limiting elastic element, which keeps the opening limit and the closing limit in the locked position under the action of the limiting elastic element.

6. The disconnector provided with a forced opening mechanism according to claim 5, characterized in that: Both the closing limiter and the opening limiter have a rotating shaft with its central axis oriented along a second direction Y perpendicular to the first direction X, and a stopper connected to the rotating shaft. The rotating shaft is inserted into the inner wall of the housing assembly so that the opening limiter can rotate around its central axis. The jumper has a closing limiter mating groove and a opening limiter mating groove at both ends along the first direction X, which cooperate with the closing limiter and the opening limiter, respectively. The closing limiter mating groove has a first limit block that can abut against the closing limiter in the locked position and a first release surface that can cooperate with the closing limiter in the unlocked position. The first limit block is set closer to the outer end relative to the first release surface. The opening limiter mating groove has a second limit block that can abut against the opening limiter in the locked position and a second release surface that can cooperate with the opening limiter in the unlocked position. The second limit block is set closer to the outer end relative to the second release surface.

7. The disconnector provided with a forced opening mechanism according to any one of claims 2-6, characterized in that: The operation module includes a housing assembly, a rotary motion input shaft, and a rotary motion output shaft. The housing assembly is provided with an operation through hole that limits the rotary motion input shaft and a drive through hole that limits the rotary motion output shaft. The jumper is confined within the housing assembly so that it can move linearly along the first direction X. A first transmission structure is provided between the linkage and the rotary motion input shaft. The first transmission structure converts the rotational motion of the rotary motion input shaft into linear motion of the linkage along the first direction X. A second transmission structure is provided between the jumper and the rotary motion output shaft. The second transmission structure converts the linear motion of the jumper along the first direction X into rotational motion of the rotary motion output shaft.

8. The disconnector provided with a forced opening mechanism according to claim 7, characterized in that: The first transmission structure includes a first gear, a second gear, and a rack that are meshed together in sequence. The first gear is a bevel gear with its central axis set along a third direction Z. The second gear is a bevel gear with its central axis set along a second direction Y that is perpendicular to the first direction X. The rack is fixedly connected to a linkage. The first gear has a first rotational motion input shaft with its rotation center in a third direction Z that is perpendicular to the first direction X and the second direction Y.

9. The disconnector provided with a forced opening mechanism according to claim 7, characterized in that: The second transmission structure includes a driving component, which includes a connecting platform. A rotating output shaft with a central axis perpendicular to the first direction X and a driving block are formed on the connecting platform. The rotating output shaft is limited by a driving through hole, so that the driving component can only rotate around the central axis of the rotating output shaft. A U-shaped driving groove is provided on the jumper. The driving block cooperates with the driving groove to form a jumper that slides along the first direction X, driving the driving component to rotate around the central axis along the second direction Y.

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