Operating mechanism and switching device

Abstract

The invention relates to the field of low-voltage electric appliances, in particular to an operating mechanism and a switching device comprising the operating mechanism. In the operating mechanism, one end of a locking piece is rotationally arranged, the other end of the locking piece is provided with a locking piece matching part, and the matching piece is arranged on the traction rod and synchronously rotates with the traction rod around the rotating axis of the traction rod; when the operating mechanism is in a normal state, the jump fastener and the locking fastener are in hasp fit, and the matching part of the locking fastener and the matching part are in first limiting fit; the traction rod is driven by tripping external force to rotate to drive the matching piece and the locking piece matching part to release the first limiting matching, and the tripping piece rotates under the action of the main spring and drives the locking piece to rotate, so that the tripping piece and the locking piece are released from the hasp matching, and the locking piece matching part and the matching piece are in second limiting matching; the operating mechanism and the switching device are simpler in structure.

Description

Technical Field

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

[0002] Existing molded case circuit breakers all include an operating mechanism and a contact system. The contact system includes a moving contact assembly and a stationary contact that work together. The operating mechanism drives the moving contact assembly to rotate, thus closing and opening with the stationary contact. The operating mechanism typically includes a bracket, a pull rod, a locking mechanism, a tripping mechanism, a re-locking mechanism, a main spring, a rocker arm assembly, an upper connecting rod, and a lower connecting rod. The operating mechanism has at least the following shortcomings:

[0003] First, the operation mechanism requires the cooperation of components such as locking fasteners, jumping fasteners, and re-fasteners to switch between four-bar and five-bar linkages. The structure is complex, with many parts, cumbersome assembly, and a short service life.

[0004] 2. In existing molded case circuit breakers, the opening distance between the moving contact assembly and the stationary contact is the same during normal opening and tripping opening. If the opening distance is set to be large, although the breaking capacity is improved, it will result in a large travel of the upper connecting rod, lower connecting rod and main spring, which will affect the mechanical life of the product. If the opening distance is set to be small, although the mechanical life of the product is guaranteed, the breaking capacity of the product is limited. Summary of the Invention

[0005] The purpose of this invention is to overcome at least one defect of the prior art and to provide an operating mechanism and a switching device including the operating mechanism, which has a simpler structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An operating mechanism includes a bracket, a locking element and a rocker arm assembly rotatably mounted on the bracket, a jump-locking element with one end rotatably mounted on the bracket and the other end cooperating with the locking element, an upper connecting rod with one end rotatably connected to the middle of the jump-locking element and the other end having a second shaft, a main spring with one end connected to the rocker arm assembly and the other end connected to the second shaft, and a rotatably mounted traction rod; the second shaft is also used for transmission connection with the moving contact assembly of a switchgear; the main spring provides energy for the opening, closing, and tripping operations of the operating mechanism;

[0008] The operating mechanism also includes a mating component mounted on the traction rod and rotating synchronously with the traction rod around its rotation axis;

[0009] The locking component is rotatably mounted at one end and has a locking component mating part at the other end;

[0010] Under normal conditions, the operating mechanism maintains a latching engagement between the jump fastener and the locking fastener, and the locking fastener engagement part and the engagement part maintain a first limit engagement.

[0011] The traction rod is driven to rotate by the external force of the release, which drives the mating part and the locking part to release the first limiting engagement. Then, the jump fastener rotates under the action of the main spring and drives the locking part to rotate, so that the jump fastener and the locking part release the latching engagement and establish a second limiting engagement between the locking part and the mating part.

[0012] Furthermore, in the normal state, the mating part of the operating mechanism is located on one side of the locking part mating portion along direction d3; in the disengaged state, the mating part 300 is located on one side of the locking part mating portion along direction d4; the directions d3 and d4 are perpendicular to each other.

[0013] Furthermore, the mating component is a cylindrical rod arranged parallel to the rotation axis of the traction rod. The rotation axes of the locking component and the traction rod are parallel to direction d5, and directions d3, d4, and d5 are perpendicular to each other. The mating part of the locking component includes a first limiting surface and a second limiting surface. The cylindrical rod abuts against the first limiting surface of the mating part along direction d3 to establish a first limiting fit between the mating part and the mating component. The cylindrical rod abuts against the second limiting surface of the mating part along direction d4 to establish a second limiting fit between the mating part and the mating component.

[0014] Furthermore, the traction rod includes a traction rod body and mating component mounting parts. The traction rod is rotatably mounted via the traction rod body. Two mating component mounting parts are spaced apart relative to each other along the rotation axis of the traction rod and are both mounted on the traction rod body. The two ends of the cylindrical rod are respectively fixedly mounted on the two mating component mounting parts. The cylindrical rod is a cylindrical rod. The traction rod body includes two sets of traction rod assembly holes arranged sequentially along the rotation axis of the traction rod. The bracket includes two bracket side plates arranged opposite each other, and each bracket side plate is provided with a traction rod mounting part. The two traction rod mounting parts are respectively inserted into the two sets of traction rod assembly holes and are rotatably connected to the traction rod body.

[0015] Furthermore, on the projection of the operating mechanism perpendicular to direction d5, the axis of the mating part, the rotation axis of the locking part, and the rotation axis of the traction rod are respectively located at the three vertices of a triangle.

[0016] Furthermore, the locking component includes a locking main board and a locking component mounting arm. The locking main board is used to engage with the jump fastener. A pair of side edges of the locking main board are respectively bent and connected to two sets of locking component mounting arms. The two sets of locking component mounting arms are arranged opposite to each other along the rotation axis of the locking component. One end of each set of locking component mounting arms is rotatably mounted on the bracket. The other end of at least one locking component mounting arm serves as the locking component mating part.

[0017] Furthermore, one end of each of the two sets of locking arm mounting brackets is rotatably mounted on the bracket, and the other end of each bracket serves as a locking part.

[0018] Furthermore, the jump fastener and the locking fastener always maintain a limiting engagement.

[0019] Furthermore, one end of the locking main board of the jump fastener and the locking fastener is the main board mating end, and the jump fastener and the main board mating end are always abutted against each other.

[0020] Furthermore, the jump fastener includes a bent and connected jump fastener fastening surface and a jump fastener mating surface;

[0021] In the normal operating state, the latching surface of the jump fastener abuts against the mating end of the main board; in the disengaged state, the mating surface of the jump fastener abuts against the mating end of the main board.

[0022] Furthermore, the mating surface of the jump fastener is an arc surface, and its center coincides with the rotation center of the jump fastener.

[0023] Furthermore, the end of the buckle surface of the jump fastener that is away from the mating surface of the jump fastener and the end that is connected to the mating surface of the jump fastener are respectively the far end and the near end of the buckle surface; the distance between the buckle surface of the jump fastener and the rotation axis of the jump fastener gradually increases from the far end to the near end of the buckle surface.

[0024] Furthermore, the operating mechanism also includes a reset structure, and the locking element and the traction rod tend to rotate in the same direction under the action of the reset structure.

[0025] Furthermore, the operating mechanism also includes a locking shaft, and the locking element is rotatably mounted on the bracket via the locking shaft; the reset structure is a reset torsion spring, which is sleeved on the locking shaft, with one set of spring arms cooperating with the locking element and another set of spring arms cooperating with the traction rod.

[0026] Furthermore, the operating mechanism also includes a lower connecting rod, one end of which is hinged to the upper connecting rod via a second shaft, and the other end of which is used for transmission connection with the moving contact assembly of the switching device.

[0027] Furthermore, in the open and disengaged states of the mechanism, the second shaft engages with the trip fastener to prevent the upper connecting rod from rotating relative to the trip fastener along direction d2.

[0028] The second shaft is also used to drive the moving contact assembly to the moving contact open position when the operating mechanism switches from the mechanism closing state to the mechanism opening state, so that the opening distance between the moving contact assembly and the corresponding stationary contact is L1.

[0029] The second shaft is also used to drive the moving contact assembly to the moving contact trip position when the operating mechanism switches from the mechanism closing state to the mechanism tripping state, so that the opening distance between the moving contact assembly and the corresponding stationary contact is L2.

[0030] Furthermore, the trip fastener also includes a trip fastener limiting surface. When the operating mechanism is in the open state and the disengaged state, the second shaft abuts against the trip fastener limiting surface to prevent the upper connecting rod from rotating relative to the trip fastener along direction d2.

[0031] Furthermore, the latching surface, mating surface, and limiting surface of the jump fastener are connected in sequence.

[0032] Furthermore, when the operating mechanism is re-engaged, the external force drives the jump fastener to rotate along direction d1 through the rocker arm component to reset, and the locking fastener and the traction rod rotate to reset respectively, so that the mating parts and the locking fastener release the second limit engagement and establish the first limit engagement, and so that the jump fastener and the locking fastener restore and maintain the buckle engagement; the directions d1 and d2 are opposite to each other.

[0033] A switching device comprising the aforementioned operating mechanism.

[0034] The operating mechanism of the present invention has a locking component that cooperates with a mating component. Compared with the traditional operating mechanism, it eliminates the need for additional locking components, simplifies the structure of the operating mechanism, ensures the reliability and stability of the operating mechanism, and saves material and labor costs.

[0035] In addition, both sets of locking mounting arms mate with mating parts, which helps to improve the reliability and stability of the mating.

[0036] Furthermore, during normal opening and tripping opening, the operating mechanism drives the moving contact assembly to the moving contact opening position and the moving contact tripping position respectively via the second shaft, so that the opening distance between the moving contact assembly and the stationary contact is different. When applied to switchgear, this extends the service life of the operating mechanism of the switchgear and ensures the breaking capacity.

[0037] The switching device of the present invention includes the operating mechanism and has a simple structure. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the operating mechanism of the present invention from a first perspective;

[0039] Figure 2 This is the invention Figure 1 A magnified structural diagram of part 10;

[0040] Figure 3 This is a schematic diagram of the operating mechanism of the present invention from a second perspective;

[0041] Figure 4 This is a cross-sectional view of the operating mechanism of the present invention, with the operating mechanism in the closed state;

[0042] Figure 5 This is a cross-sectional view of the switching device of the present invention, in the closed state;

[0043] Figure 6 This is a cross-sectional view of the switching device of the present invention, showing the switching device in the open state;

[0044] Figure 7 This is a cross-sectional view of the switching device of the present invention, showing the switching device in the tripped state;

[0045] Figure 8 This is a schematic diagram of the structure of the jump fastener of the present invention;

[0046] Figure 9 This is a structural schematic diagram of the locking element of the present invention;

[0047] Figure 10 This is a schematic diagram of the traction rod of the present invention;

[0048] Figure 11 This is a schematic diagram of the rocker arm of the present invention from a first-view perspective;

[0049] Figure 12 This is a schematic diagram of the rocker arm of the present invention from a second perspective;

[0050] Figure 13 This is a schematic diagram of the structure of the bracket of the present invention;

[0051] Figure 14 This is a schematic diagram of the reset structure of the present invention.

[0052] Explanation of reference numerals in the attached figures

[0053] Operating mechanism 1234;

[0054] 100 bracket, 110 bracket side plate, 11123 rotation limiting structure, 111 rocker arm shaft groove, 111 first rocker arm stop, 112 second rocker arm stop, 113 stroke limiting hole, 114 bracket limiting part, 115 traction rod mounting part, 116.

[0055] 200, 210, 211, 220, 230; 200, 210, 211, 220, 230;

[0056] Mating part 300;

[0057] The components include a reset structure 400, a single torsion spring 410, a helical body 411, a first spring arm 412, a second spring arm 413, a spring arm connecting section 414, a spring arm assembly section 415, and a spring connecting rod 420.

[0058] Locking component 500, locking component main board 510, main board mating end 511, locking component mounting arm 520, locking component shaft hole 521, locking component spring hole 522, locking component stroke limiting part 530, locking component mating part 540, mating part first limiting surface 541, mating part second limiting surface 542;

[0059] Locking pivot 550;

[0060] Jump fastener 600, jump fastener latching surface 610, jump fastener mating surface 620, jump fastener limiting surface 630, jump fastener shaft hole 640, jump fastener connecting hole 650, jump fastener blocking part 660;

[0061] Rocker arm assembly 700, handle 710, rocker arm 720, rocker arm support leg 721, rocker arm crossbeam 722, and jumper reset drive unit 724;

[0062] Upper connecting rod 810, upper connecting rod side plate 811;

[0063] Second shaft 820;

[0064] Jump-button pivot 830;

[0065] First axis 840;

[0066] Main spring 850;

[0067] Lower connecting rod 860;

[0068] Moving contact assembly 910, supporting rotating shaft 911 and moving contact 912;

[0069] Static contact 920. Detailed Implementation

[0070] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the switching device of the present invention. The switching device of the present invention is not limited to the descriptions in the following embodiments.

[0071] like Figure 1-14 The diagram shows an embodiment of the switching device of the present invention, specifically a circuit breaker.

[0072] like Figure 5-7As shown, the switching device of this embodiment includes an operating mechanism 1234 and at least one set of contact systems. The contact system includes a moving contact assembly 910 and a stationary contact 920 that work together. The operating mechanism 1234 is throttle-connected to the moving contact assembly 910 to drive the moving contact assembly 910 to rotate and close and open with the stationary contact 920. Further, the moving contact assembly 910 includes a supporting shaft 911 and a moving contact 912 disposed on the supporting shaft 911. Further, when the switching device of this embodiment is a multi-phase switching device, that is, when the number of contact systems is ≥2, the moving contact assembly 910 of each contact system is driven by the operating mechanism 1234 to synchronously close and open with the corresponding stationary contact 920. The supporting shaft 911 of each moving contact assembly 910 is either an integral structure or a separate structure; in the switching device of this embodiment, each supporting shaft 911 is preferably an integral structure.

[0073] Furthermore, the switching device in this embodiment also includes a short-circuit protection mechanism (not shown in the figure) and an overload protection mechanism (not shown in the figure). The short-circuit protection mechanism or overload protection mechanism is used to drive the operating mechanism 1234 to trip when a short-circuit fault or overload fault occurs in the circuit where the switching device is located. The operating mechanism 1234 then drives the moving contact assembly 910 to rotate and disconnect from the stationary contact 920. Furthermore, the short-circuit protection mechanism and the overload protection mechanism are either an integrated structure or a separate structure; both the short-circuit protection mechanism and the overload protection mechanism can be implemented using existing technology, and will not be described further here.

[0074] Furthermore, the switchgear in this embodiment has four operating states: closed, open, tripped, and re-clamped. The closed, open, and tripped states are three stable states, while the re-clamped state is a transitional state. The operating mechanism 1234 also has four operating states: closed, open, tripped, and re-clamped. These represent the corresponding states of the operating mechanism 1234 when the switchgear is in the closed, open, tripped, and re-clamped states, respectively. The re-clamped state is also a transitional state. When the switchgear is in the closed state, the operating mechanism 1234 performs a tripping operation to switch the switchgear to the open state. Mechanism 1234 also switches to the mechanism open state; when the switchgear is in the open state, the operating mechanism 1234 performs a closing operation to switch the switchgear to the closed state, and the operating mechanism 1234 also switches to the mechanism closed state; when the switchgear is in the closed state, after the operating mechanism 1234 trips, the switchgear switches to the tripped state, and the operating mechanism 1234 also switches to the mechanism tripped state; when the switchgear is in the tripped state, an external operating force (such as the manual operating force of the operator) drives the operating mechanism 1234 to perform a re-tightening operation, the switchgear switches to the re-tightening state, and the operating mechanism 1234 also switches to the mechanism re-tightening state; after the external operating force is removed, the switchgear automatically switches to the open state and the operating mechanism 1234 automatically switches to the mechanism open state.

[0075] Furthermore, the switching device of this embodiment also includes a housing structure for accommodating the operating mechanism 1234 and the contact system.

[0076] The present invention also discloses an operating system, which includes the operating mechanism 1234 and the moving contact assembly 910.

[0077] like Figure 1-14 The figure shown is one embodiment of the operating mechanism 1234.

[0078] like Figure 1 As shown, the operating mechanism 1234 in this embodiment has a length direction of d3, a width direction of d5, and a height direction of d4, which are perpendicular to each other.

[0079] like Figure 1 , 3As shown in Figure 7, the operating mechanism 1234 of this embodiment includes a bracket 100, a locking member 500 and a rocker arm component 700 respectively rotatably mounted on the bracket 100, a jumper 600 with one end rotatably mounted on the bracket 100 and the other end cooperating with the locking member 500, an upper connecting rod 810 with one end rotatably connected to the middle of the jumper 600 and the other end provided with a second shaft 820, a main spring 850 with one end connected to the rocker arm component 700 and the other end connected to the second shaft 820, and a rotatably mounted release transmission structure. The second shaft 820 is also used to drive the moving contact assembly 910 of the switching device to rotate and close and open with the stationary contact 920; the main spring 850 provides energy for the opening, closing and tripping operations of the operating mechanism 1234. When the operating mechanism 1234 performs the closing and opening operations, the main spring 850 first stores energy and then releases energy. When the operating mechanism 1234 trips in the closing state, the main spring 850 releases energy and drives the operating mechanism 1234 to switch to the tripping state. In the normal state (i.e., the switching device in this embodiment is in the normal state), that is, during the operation of the operating mechanism 1234 in the closed state, the open state, during the normal closing operation, or during the normal opening operation (non-tripping opening process), the trip fastener 600 and the locking fastener 500 maintain a latching engagement, and the locking fastener 500 maintains a first limit engagement with the tripping transmission structure; in the closed state, the tripping transmission structure of the operating mechanism 1234 in this embodiment is driven by an external force (e.g., the driving force of the short-circuit protection mechanism, the driving force of the overload protection mechanism, or the driving force of the trip unit) to rotate, causing the tripping transmission structure to release the first limit engagement with the locking fastener 500, and then the trip fastener 600 is in the main spring 850. Under the action of the mechanism, the trip fastener 600 drives the locking fastener 500 to rotate, thereby releasing the latching engagement between the trip fastener 600 and the locking fastener 500 and establishing a second limiting engagement between the locking fastener 500 and the tripping transmission structure. When the operating mechanism 1234 performs a re-clamping operation in the disengaged state, the operating force drives the rocker arm component 700 to rotate, and the trip fastener 600 rotates and resets under the drive of the rocker arm component 700. The tripping transmission structure and the locking fastener 500 rotate and reset respectively, thereby releasing the second limiting engagement between the tripping transmission structure and the locking fastener 500 and establishing a first limiting engagement. The trip fastener 600 and the locking fastener 500 are restored and maintain the latching engagement. The operating mechanism 1234 switches to the re-clamping state. After the operating force is removed, the operating mechanism 1234 automatically switches to the tripping state.

[0080] Specifically, the tripping transmission structure is driven by an external force to rotate along direction d2, thus releasing the first limiting engagement with the locking member 500. The jumping member 600 rotates along direction d2 under the action of the main spring 850, and the jumping member 600 drives the locking member 500 to rotate along direction d2, causing the jumping member 610 to release the latching engagement with the locking member 510. When the operating mechanism 1234 resets from the mechanism's tripped state, the jumping member 610, the locking member 500, and the tripping transmission structure rotate along direction d1 to reset. Directions d1 and d2 are opposite to each other. The rotational axes of the traction rod 200, the locking member 500, the jumping member 600, the moving contact assembly 910, and the axis of the second shaft 820 are all parallel to direction d5. The moving contact assembly 910 closes with the corresponding stationary contact 920 by rotating along direction d2, and disconnects from the corresponding stationary contact 920 by rotating along direction d1.

[0081] Furthermore, such as Figure 5-7 The directions shown are clockwise (d1) and counterclockwise (d2).

[0082] Furthermore, the operating mechanism 1234 of this embodiment also includes a reset structure 400, which acts on both the locking element 500 and the tripping transmission structure. When the operating mechanism 1234 switches from the closed state to the tripped state, the reset structure 400 stores energy. When the operating mechanism 1234 re-engages from the tripped state, the reset structure 400 releases energy, driving both the locking element 500 and the tripping transmission structure to reset. Furthermore, the reset structure 400 acts on both the locking element 500 and the tripping transmission structure, causing them to tend to rotate in the same direction.

[0083] Furthermore, the upper connecting rod 810 is rotatably connected to the jump fastener 600 via the first shaft 840; the operating mechanism 1234 of this embodiment also includes a lower connecting rod 860, one end of which is rotatably connected to the upper connecting rod 810 via the second shaft 820, and the other end of which is drive-connected to the moving contact assembly 910—specifically, this end of the lower connecting rod 860 is drive-connected to the support rotating shaft 911 of the moving contact assembly 910 via a connecting shaft, so as to drive the moving contact assembly 910 to reciprocate and rotate to close and open with the stationary contact 920.

[0084] like Figure 1 , 3 As shown in Figures 9 and 13, the locking element 500 is respectively engaged with the mechanism at both ends of its rotation stroke to limit the rotation angle of the locking element 500.

[0085] Specifically, the locking member 500 includes at least one locking member travel limiting part 530; at least one set of support side plates 110 of the bracket 100 are provided with travel limiting holes 114; the locking member travel limiting part 530 is movably inserted into the travel limiting hole 114, and at both ends of the rotational travel of the locking member 500, the locking member travel limiting part 530 respectively engages with the side walls at both ends of the travel limiting hole 114. Further, the locking member 530 is provided with two locking member travel limiting parts 530; each of the two sets of support side plates 110 of the bracket 100 is provided with a travel limiting hole 114; the two locking member travel limiting parts 530 are respectively movably inserted into the two forming limiting holes 114.

[0086] like Figure 1 , 3 As shown in Figure 13, the bracket 100 includes two sets of bracket side plates 110 arranged at relative intervals, forming an accommodating space between the two sets of bracket side plates 110; the locking fastener 500, the jumping fastener 600, the upper connecting rod 810, the second shaft 820, the first shaft 840, the main spring 850, and the lower connecting rod 860 are all arranged within the accommodating space, that is, arranged between the two sets of bracket side plates 110.

[0087] Specifically, the locking fastener 500 is rotatably mounted on the two sets of support side plates 110 via a locking pivot 550—specifically, both ends of the locking pivot 500 are respectively mounted on the two sets of support side plates 110. The jump fastener 600 is rotatably mounted on the two sets of support side plates 110 via a jump fastener pivot 830—specifically, both ends of the jump fastener pivot 830 are respectively rotatably mounted on the two sets of support side plates 110. The rocker arm 720 of the rocker arm component 700 is rotatably mounted on the two sets of support side plates 110. Furthermore, the two sets of support side plates 110 are fixedly connected by a connecting shaft.

[0088] In the operating mechanism 1234 of this embodiment, the bracket 100 is an independently configured structure—specifically, the bracket 100 is independent of the housing structure of the switching device. However, it should be noted that the bracket 100 can also be implemented by the housing structure of the switching device, which will not be described in detail here. In addition, in the operating mechanism 1234 of this embodiment, the bracket side plate 110 is an integral structure; however, the bracket side plate 110 can also be a structure assembled from multiple parts.

[0089] like Figure 1 , 3 As shown in Figure 7, the rocker arm component 700 includes a rocker arm 720 rotatably mounted on the bracket 100 and a handle 710 mounted on the rocker arm 720. External operating force drives the rocker arm 720 to rotate through the handle 710, thereby driving the operating mechanism 1234 to switch between the mechanism closing state and the mechanism opening state, as well as between the mechanism tripping state and the mechanism re-clamping state.

[0090] Specifically, such as Figure 1 , 3 As shown in Figures 11-13, one implementation of the rocker arm 720 rotatably mounted on two sets of support side plates 110 is as follows: The rocker arm 720 includes rocker arm legs 721 and rocker arm crossbeam 722. The two rocker arm legs 721 are arranged opposite each other along the rotation axis of the rocker arm 720. One end of each rocker arm leg 721 is bent and connected to the rocker arm crossbeam 722. The rocker arm crossbeam 722 is also used to connect to the handle 710 of the rocker arm component 700. The support side plate 110 includes a rotation limiting structure 11123 that cooperates one-to-one with the rocker arm legs 721. The rotation limiting structure 11123 includes a rocker arm shaft groove 111, a first rocker arm stop 112, and a second rocker arm stop 113. 13. The first rocker arm stop 112 includes a first stop groove, and the second rocker arm stop 113 includes a second stop groove. Both the first and second stop grooves are U-shaped grooves. The openings of the U-shaped structures of the first and second stop grooves are opposite to each other along the rotation axis of the rocker arm 720—that is, they face opposite directions. The other end of the rocker arm support leg 721 passes through the corresponding first and second stop grooves and is rotatably disposed in the rocker arm shaft groove 111. The bottom walls of the U-shaped structures of the first and second stop grooves are located on both sides of the corresponding rocker arm support leg 721 along the rotation axis of the rocker arm 720, thereby restricting the movement of the rocker arm support leg 721 along the rotation axis of the rocker arm 720. Furthermore, the rocker arm 720 is respectively engaged with the support side plate 110 at both ends of its swing stroke, thereby limiting the maximum swing angle of 720.

[0091] In another embodiment where the rocker arm 720 is rotatably mounted on the two sets of support side plates 110, each of the two rocker arm legs 721 of the rocker arm 720 is rotatably connected to the two sets of support side plates 110 via a rocker arm pivot. It should be noted that those skilled in the art can make other modifications using conventional techniques, all of which should fall within the protection scope of this invention.

[0092] Specifically, such as Figure 5-7 As shown, one end of the main spring 850 is connected to the rocker arm beam 722 of the rocker arm 720 and the other end is connected to the second shaft 820.

[0093] like Figure 5-6 As shown, the rocker arm component 700 has a rocker arm closing position, a rocker arm disengaging position, a rocker arm opening position, and a rocker arm re-closing position arranged sequentially along its rotation direction. The rocker arm closing position, rocker arm disengaging position, and rocker arm opening position correspond to the mechanism closing state, mechanism disengaging state, and mechanism opening state of the operating mechanism 1234 in this embodiment, respectively.

[0094] like Figure 6-7As shown, in the operating mechanism 1234 of this embodiment, when the mechanism is in the open state or the mechanism is in the disengaged state, the jump fastener 600 and the rocker arm component 700 are in a limiting engagement. When the mechanism is in the disengaged state, the operating mechanism 1234 of this embodiment is driven by an external force to rotate the rocker arm component 700 to the rocker arm re-engage position. The rocker arm component 700 drives the jump fastener 600 to reset and re-engage with the locking fastener 500. After the external force is removed, the rocker arm component 700 automatically rotates from the rocker arm re-engage position to the rocker arm open position under the action of the main spring 850, and the operating mechanism 1234 is finally switched to the open state.

[0095] Specifically, the rocker arm 720 of the rocker arm component 700 further includes a jump buckle reset drive 724; the jump buckle 600 further includes a jump buckle blocking part 660; when the operating mechanism 1234 of this embodiment is in the disengaged state and performs a re-fastening operation, the jump buckle reset drive 724 presses against the jump buckle blocking part 660 to make the jump buckle 600 rotate toward the re-fastening position.

[0096] like Figure 3 As shown, one implementation of the upper connecting rod 810 is as follows: The upper connecting rod 810 includes two upper connecting rod side plates 811 that are opposite each other along direction d5 and located on both sides of the jump fastener 600. One end of the two upper connecting rod side plates 811 is rotatably connected to the jump fastener 600 through a first shaft 840, and the other end is rotatably connected to the lower connecting rod 860 through a second shaft 820. The lower connecting rod 860 is located between the two upper connecting rod side plates 811.

[0097] like Figure 1 , 3 Figure -7 shows one embodiment of the tripping transmission structure.

[0098] The tripping transmission structure of this embodiment includes a rotatably mounted traction rod 200 and a mating component 300 mounted on the traction rod 200 and rotating synchronously with it around its rotation axis. In the normal state (i.e., in the normal state of the switchgear in this embodiment), that is, during the operation of the operating mechanism 1234 in the closed state, the open state, during normal closing operation, or during normal opening operation (non-tripping opening process), the tripping fastener 600 and the locking fastener 500 maintain a latching engagement, and the locking fastener 500 maintains a first limit engagement with the mating component 300. In the closed state, the traction rod 200 is driven to rotate by a tripping external force (e.g., the tripping external force comes from the driving force of the short-circuit protection mechanism and the overload protection mechanism), causing the mating component 300 to release the first limit engagement with the locking fastener 500, and the tripping fastener 600... Under the action of the main spring 850, the jump fastener 600 rotates and drives the locking fastener 500 to rotate, thereby disengaging the jump fastener 600 from the locking fastener 500 and establishing a second limiting engagement between the locking fastener 500 and the mating part 300. The locking fastener 500 and the mating part 300 maintain the second limiting engagement. When the operating mechanism 1234 performs a re-fastening operation in the disengaged state, the external force drives the rocker arm component 700 to rotate. The jump fastener 600 rotates and resets under the drive of the rocker arm component 700, and the locking fastener 500 rotates and resets. The traction rod 200 rotates and drives the mating part 300 to reset, ultimately restoring the jump fastener 600 from the locking fastener 500 and disengaging the locking fastener 500 from the mating part 300 and establishing a first limiting engagement. The operating mechanism 1234 switches to the re-fastening state. After the external force is removed, the operating mechanism 1234 automatically switches to the tripping state.

[0099] Specifically, in the closed state of the operating mechanism 1234 of this embodiment, the traction rod 200 is driven by the external force of the release and rotates in direction d2, causing the mating part 300 to release the first limit engagement with the locking part 500. The jumping fastener 600 rotates in direction d1 under the action of the main spring 850, and the jumping fastener 600 drives the locking part 500 to rotate in direction d1, causing the jumping fastener 600 to release the latching engagement with the locking part 500. When the operating mechanism 1234 performs the re-fastening operation, the operating external force drives the rocker arm component 700 to rotate in direction d2, the rocker arm component 700 drives the jumping fastener 600 to rotate in direction d2, the locking part 500 rotates in direction d2 to reset, and the traction rod 200 rotates in direction d2 to drive the mating part 300 to reset.

[0100] like Figure 1 , 3As shown in Figure 7, in the operating mechanism 1234 of this embodiment, the locking element 500 and the traction rod 200 tend to rotate in the same direction (specifically, direction d2) under the action of the reset structure 400; when the operating mechanism 1234 is in the disengaged state and performs a re-locking operation, the locking element 500 and the traction rod 200 are reset by rotating in direction d2 respectively under the action of the reset structure 400.

[0101] Specifically, the reset structure 400 is a torsion spring, which is sleeved on a spring shaft (the spring shaft is realized by the locking shaft 550 of the operating mechanism 1234, which helps to simplify the structure of the operating mechanism 1234 in this embodiment; the locking shaft 550 will be described in detail later). The spring shaft is fixedly mounted on the bracket 100. One set of spring arms of the torsion spring cooperates with the locking member 500, and the other set of spring arms cooperates with the traction rod 200. Furthermore, the reset structure 400 is a double torsion spring, which includes two single torsion springs 410 arranged symmetrically side by side along the rotation axis of the locking member 500 and a spring connecting rod 420. The two single torsion springs 410 are a first single torsion spring and a second single torsion spring, respectively. Each single torsion spring 410 includes a helix 411 and a first spring arm 412 and a second spring arm 413 connected to the helix 410, respectively. One end of the first spring arm 412 of the two single torsion springs is connected by the spring connecting rod 420. The second spring arm 413 includes a spring arm connecting section 414 and a spring arm assembly section 415. One end of the spring arm connecting section is connected to the corresponding helix 411 and the other end is bent and connected to the spring arm assembly section 415. The two first spring arms 412 and the spring connecting rod 420 are used as a whole to cooperate with the traction rod 200. The spring arm assembly section 415 of the two second spring arms 413 is used to cooperate with the two locking member mounting arms 520 of the locking member 500. Furthermore, the extension direction of the spring arm assembly section 415 is parallel to the rotational axis of the locking member 500.

[0102] As another embodiment of the tripping transmission structure, the tripping transmission structure includes a re-fastening member rotatably mounted on the bracket 100 with its rotation axis parallel to direction d5; in the normal state of the operating mechanism, there is a first limiting engagement between the locking member 500 and the re-fastening member; in the disengaged state of the operating mechanism, there is a second limiting engagement between the locking member 500 and the re-fastening member; the re-fastening member is driven to rotate by an external force, causing the re-fastening member to release the first limiting engagement with the locking member 500, thereby releasing the latching engagement between the locking member 500 and the jumper member 600 and establishing the second limiting engagement between the locking member 500 and the re-fastening member; the tripping transmission structure also includes a traction rod 200, which is used to transmit the tripping force from the short-circuit protection mechanism, overload protection mechanism, or trip unit to the re-fastening member to drive its rotation; this embodiment can be implemented by existing technology, and will not be described in detail here.

[0103] like Figure 1 ,3 As shown in Figure 7, one improvement of the switching device in this embodiment is:

[0104] One end of the locking member 500 is rotatably mounted on the bracket 100, and the other end is provided with a locking member mating part 540. In the normal state, the locking member mating part 540 and the mating member 300 maintain a first limiting engagement. The traction rod 200 is driven to rotate by the external force of the release, driving the mating member 300 and the locking member mating part 540 to release the first limiting engagement. The jumping fastener 600 rotates under the action of the main spring 850 and drives the locking member 500 to rotate, so that the jumping fastener 600 and the locking member 500 release the latching engagement and establish a second limiting engagement between the locking member mating part 540 and the mating member 300. In the released state, the locking member mating part 540 and the mating member 300 maintain the second limiting engagement. Furthermore, the traction rod 200 is driven by the external force of the release and rotates in the direction d1, driving the mating part 300 to release the first limiting engagement with the locking part 540, and the jumping fastener 600 rotates in the direction d1 under the action of the main spring 850 and drives the locking part 500 to rotate in the direction d1.

[0105] In this embodiment, the operating mechanism 1234 has a locking component 500 that cooperates with the mating component 300. Compared with traditional operating mechanisms, it eliminates the need for additional locking components, simplifies the structure of the operating mechanism 1234, ensures the reliability and stability of the operating mechanism 1234, and saves material and labor costs.

[0106] Specifically, such as Figure 5-6 As shown, in the normal state, the operating mechanism 1234 has the mating part 300 located on one side of the locking part mating portion 540 along direction d3; as Figure 7 As shown, in the disengaged state of the operating mechanism 1234, the mating part 300 is located on one side of the locking part mating portion 540 along direction d4; directions d3 and d4 are perpendicular to each other. Further, as... Figure 1 , 3 As shown in Figure 10, the mating component 300 is a cylindrical rod arranged parallel to the rotation axis of the traction rod 200, and the rotation axis of the traction rod 200 is parallel to direction d5; as shown in Figure 10. Figure 9As shown, the locking component mating part 540 includes a first limiting surface 541 and a second limiting surface 542. A cylindrical rod abuts against the first limiting surface 541 along direction d3, establishing a first limiting fit between the locking component mating part 540 and the mating part 300. Similarly, a cylindrical rod abuts against the second limiting surface 542 along direction d4, establishing a second limiting fit between the locking component mating part 540 and the mating part 300. Further, the cylindrical rod is cylindrical; both the first limiting surface 541 and the second limiting surface 542 are planar, and preferably, one end of each surface is connected by an arc-shaped surface, facilitating the movement of the cylindrical rod from its mating state with the first limiting surface 541 to its mating state with the second limiting surface 542. Further, the mating part 300 and the traction rod 200 are either an integral or separate structure.

[0107] As another embodiment of the mating member 300, the mating member 300 may also be a cylindrical protrusion extending along direction d5; and / or, the cylindrical rod may be a semi-cylindrical rod, a variable cylindrical rod, etc., as long as it can realize the first limiting fit, the second limiting fit, and the conversion between the mating member 300 and the locking member mating part 540.

[0108] like Figure 1 , 3 As shown in Figures 1 and 10, in this embodiment, the mating component 300 and the traction rod 200 are separate structures.

[0109] Specifically, the traction rod 200 includes a traction rod body 210 and two mating component mounting portions 220. The traction rod 200 is rotatably mounted via the traction rod body 210. Two mating component mounting portions 220 are relatively spaced apart on the traction rod body 210 along the rotation axis (direction d5) of the traction rod 200. The two ends of the cylindrical rod are respectively fixedly mounted on the two mating component mounting portions 220. Furthermore, each of the two mating component mounting portions 220 has a mating component assembly hole, and the two ends of the mating component 300 are respectively inserted into the two mating component assembly holes; the mating component mounting portions 220 are perpendicular to the rotation axis of the traction rod 200.

[0110] like Figure 1 , 3 As shown in -7, 10 and 13, the traction rod 200 is rotatably mounted on the bracket 100.

[0111] Specifically, the traction rod 200 includes two sets of traction rod mounting holes 211 disposed on the traction rod body 210, the two sets of traction rod mounting holes 211 being spaced apart along the axial direction of the traction rod body 210; the bracket side plate 110 of the bracket 100 also includes a traction rod mounting part 116, the traction rod mounting part 116 being protruding towards the side where the traction rod body 210 is located; when the traction rod 200 is assembled with the bracket side plate 110, the traction rod mounting part 116 is inserted into the corresponding traction rod mounting hole 211, and is rotatably connected to the traction rod body 210. Further, the side wall of the traction rod mounting hole 211 is provided with a shaft hole, and the traction rod mounting part 116 is provided with a shaft hole; the rotating shaft of the traction rod 200 passes through the shaft hole of the traction rod mounting part 116 and the shaft hole on the side wall of the traction rod mounting hole 211 respectively, rotatably connecting the traction rod 200 and the bracket side plate 110 together. Furthermore, the two sets of traction rod mounting holes 211 are located on both sides of the two sets of mating parts mounting portions 220 of the traction rod 200 along the rotational axis of the traction rod body 210. The traction rod 200 and the bracket 100 are rotatably connected in the above manner, which improves the compactness of the structural layout and reduces the installation space requirements.

[0112] In another embodiment where the traction rod 200 is rotatably mounted on the bracket 100, the traction rod 200 is provided with a traction rod connecting arm, one end of which is rotatably connected to the traction rod body 210 and the other end is rotatably connected to the traction rod mounting part 116; or, the bracket 100 does not provide a traction rod mounting part 116, but directly provides a traction rod connecting hole, the traction rod connecting arm and the bracket side plate 110 of the bracket 100 are stacked along the rotation axis of the traction rod 200, and the traction rod connecting arm is rotatably connected to the bracket 100 through the traction rod connecting hole.

[0113] like Figure 1-2 As shown, in the normal state, the operating mechanism 1234 of this embodiment has the traction rod 200 and the bracket 100 in a limiting engagement to prevent the traction rod 200 from rotating further under the action of the reset structure 400, thereby establishing a reliable second limiting engagement between the mating part 300 and the locking part mating part 540 of the locking part 500.

[0114] Specifically, the traction rod 200 further includes at least one set of traction rod limiting parts 230 disposed on the traction rod body 210; at least one set of bracket side plates 110 of the mechanism 100 includes bracket limiting parts 115; in the normal state, the traction rod limiting parts 230 and the bracket limiting parts 115 of the operating mechanism 1234 of this embodiment abut and limit each other to prevent the traction rod 200 from rotating further under the action of the reset structure 400. Furthermore, the traction rod 200 is provided with two sets of traction rod limiting parts 230, which are spaced apart along the rotation axis of the traction rod 200; both sets of bracket side plates 110 are provided with bracket limiting parts 115, and the two sets of bracket limiting parts 115 respectively limit and cooperate with the two sets of traction rod limiting parts 230.

[0115] like Figure 1 , 3 As shown in -7 and 9, the locking component 500 also includes a locking main board 510 and a locking component mounting arm 520. The locking main board 510 is used to fasten with the jump fastener 600. A pair of side edges of the locking main board 510 are bent and connected to two sets of locking component mounting arms 520 respectively. The two sets of locking component mounting arms 520 are arranged opposite to each other along the rotation axis of the locking component 500. One end of the two sets of locking component mounting arms 520 is rotatably mounted on the bracket 100, and the other end of at least one locking component mounting arm 520 serves as a locking component mating part 540.

[0116] Specifically, the two sets of locking member mounting arms 520 are rotatably mounted on the two sets of bracket side plates 110 of the bracket 100 via locking shafts 550. The locking main board 510 includes a main board mating end 511, which is located between the two sets of locking member mounting arms 520. One end of each of the two sets of locking member mounting arms 520 is rotatably mounted on the bracket 100, and the other end serves as a locking member mating part 540. Both sets of locking member mounting arms 520 mate with the mating part 300, which helps to improve the reliability and stability of the mating. One end of each of the two locking member stroke limiting parts 530 of the locking member 500 is bent and connected to the two sets of locking member mounting arms 520. The locking member mounting arm 520 is provided with a locking member spring hole 522 into which the spring arm assembly section 415 of the reset structure 400 is inserted. The locking member mounting arm 520 is also provided with a locking member shaft hole 521 through which the locking shaft 550 passes.

[0117] like Figure 4-9 As shown, another improvement of the switching device in this embodiment is:

[0118] The jump fastener 600 and the locking fastener 500 always maintain a limiting engagement, which makes it easy for the jump fastener 600 and the locking fastener 500 to restore the buckle engagement.

[0119] Specifically, the main board mating end 511 of the jump fastener 600 and the locking fastener 500 is always abutted.

[0120] Furthermore, the jump fastener 600 includes a jump fastener latching surface 610 and a jump fastener mating surface 620; in the normal state, the operating mechanism 1234 abuts the jump fastener latching surface 610 against the main board mating end 511 to achieve the latching engagement between the jump fastener 600 and the locking fastener 500; in the disengaged state, the operating mechanism 1234 abuts the jump fastener mating surface 620 against the main board mating end 511.

[0121] Furthermore, the latching surface 610 of the jump fastener is parallel to the rotation axis of the jump fastener shaft 600.

[0122] Furthermore, the mating surface 620 of the jump fastener is parallel to the rotation axis of the jump fastener shaft 600. Furthermore, the mating surface 620 of the jump fastener is an arc surface, the center of which coincides with the rotation center of the jump fastener 600.

[0123] Furthermore, the end of the latching surface 610 furthest from the latching mating surface 620 is the far end of the latching surface, and the end of the latching surface 610 connected to the latching mating surface 620 is the near end of the latching surface; the distance between the latching surface 610 and the rotation axis of the latching fastener 600 gradually increases from the far end to the near end. Furthermore, the latching surface 610 is a plane parallel to the rotation axis of the latching fastener 600.

[0124] As another embodiment of the buckle fastening surface 610, the buckle fastening surface 610 is a spiral surface, and the curvature gradually decreases from the far end of the fastening surface to the near end of the fastening surface.

[0125] The working process of the operating mechanism 1234 in this embodiment will be described below:

[0126] like Figure 4-6 As shown, in this embodiment, when the operating mechanism 1234 is in the open and closed states, the mating component 300 is located on one side of the locking component mating part 540 along direction d3, and the mating component 300 and the locking component mating part 540 maintain a first limit engagement. In this embodiment, the operating mechanism 1234 switches between the open and closed states through normal closing and opening operations, and both the mating component 300 and the locking component mating part 540 maintain the first limit engagement. (Combined with...) Figure 5 and 7As shown, in the closed state of the switchgear in this embodiment, when a short circuit or overload fault occurs in its circuit, the traction rod 200 is driven by the tripping force to rotate in direction d2 (counterclockwise), causing the mating part 300 to release the first limiting engagement with the locking part 540. The main spring 850 drives the tripping fastener 600 to rotate in direction d2 (counterclockwise), and the tripping fastener 600 simultaneously drives the locking part 500 to rotate in direction d2 (counterclockwise)—that is, the tripping fastener 600 and the locking part 500 rotate synchronously and in the same direction under the action of the main spring 850, causing the tripping fastener 600 and the locking part 500 to release the latching engagement and causing the locking part 540 to establish and maintain a second limiting engagement with the mating part 300. The switchgear in this embodiment is composed of... Figure 5 The device shown has switched to the closed state. Figure 7 The device shown is in a tripped state. For example... Figure 7 As shown, in the disengaged state of the operating mechanism 1234 in this embodiment, the external force drives the rocker arm component 700 to rotate from the disengaged position to the re-engaged position. Simultaneously, the rocker arm component 700 drives the jump fastener 600 to rotate along direction d1 (clockwise) to the re-engaged position, so that the jump fastener latching surface 610 engages with the locking component 500. The reset structure 400 simultaneously drives the locking component 500 and the traction rod 200 to rotate along direction d1 (clockwise), so that the locking component mating part 540 and the mating part 300 release the second limit engagement and the mating part 300 moves to the side of the locking component mating part 540 in direction d3. The operating mechanism 1234 switches from the disengaged state to the re-engaged state. After the external force is removed, the operating mechanism 1234 automatically switches from the re-engaged state to the open state.

[0127] like Figure 1 , 3 As shown in Figure 7, this is one layout of the switching device in this embodiment:

[0128] In the operating mechanism 1234, the two sets of support side plates 110 of the bracket 100 are arranged opposite each other along direction d5. The jump fastener 600, locking fastener 500, upper connecting rod 810, lower connecting rod 860, first shaft 840, second shaft 820, and main spring 850 are all arranged within the accommodating space of the bracket 100. The jump fastener 600, locking fastener 500, and release transmission structure are arranged sequentially along direction d3 (specifically, the jump fastener 600, locking fastener 500, and traction rod 200 are arranged sequentially along direction d3, and the mating part 300 is located between the jump fastener 600 and the traction rod 200 in direction d3). The rocker arm beam 722 and the second shaft 820 of the rocker arm 720 are located on both sides of the jump fastener 600 in direction d4. The first shaft 840 is located between the two ends of the main spring 850 and between the rocker arm beam 722 and the second shaft 820 in direction d4. The second shaft 820, the lower connecting rod 860, and the moving contact assembly 910 are located on one side of the jump fastener 600 in direction d4. The rotation axes of the jump fastener 600, the locking fastener 500, the rocker arm 722, and the traction rod 200 are all parallel to direction d5. On the projection of the operating mechanism 1234 perpendicular to direction d5, the rotation axis of the locking fastener 500, the rotation axis of the traction rod 200, and the axis of the mating part 300 are located at the three vertices of a triangle, respectively. The rotation axes of the first shaft 840, the jump fastener shaft 830, and the moving contact assembly 910 are located at the three vertices of a triangle.

[0129] like Figure 6-7 As shown, the third improvement of the switching device in this embodiment is:

[0130] In both the open and disengaged states of the operating mechanism 1234, the second shaft 820 engages with the trip fastener 600 to prevent the upper connecting rod 810 from rotating relative to the trip fastener 600 along direction d2. When the operating mechanism 1234 switches from the closed to the open state, the second shaft 820 drives the moving contact assembly 910 to the open position, resulting in a distance L1 between the moving contact assembly 910 and the corresponding stationary contact 920. In other words, when the operating mechanism 1234 is normally open, i.e., when the external force drives the operating mechanism 1234 from the closed to the open state via the rocker arm component 720, the second shaft 820 drives the moving contact assembly 910 to the open position, resulting in a distance L2 between the moving contact assembly 910 and the stationary contact 920. When the operating mechanism 1234 switches from the closed state to the tripped state, the second shaft 820 drives the moving contact assembly 910 to rotate to the moving contact trip position, making the distance between the moving contact assembly 910 and the corresponding stationary contact 920 L2, where L2 > L1. In other words, when the operating mechanism 1234 trips and opens, the external force driving the traction rod 200 to rotate, causing the operating mechanism 1234 to switch from the closed state to the tripped state, the second shaft 810 drives the moving contact assembly 910 to rotate to the moving contact trip position, making the distance between the moving contact assembly 910 and the stationary contact 920 L1, where L2 > L1. Further, L2 ≥ 1.5 * L1.

[0131] In existing switchgear, the moving contact assembly is limited by the housing structure of the switchgear so that it stops in the open position when the moving contact assembly is disconnected from the stationary contact. However, this structure means that the opening distance between the moving contact assembly and the stationary contact is the same when the switchgear is normally opening and interrupting fault current (short circuit or overload current). If the opening distance is designed to be large, it will limit the operating life of the switchgear. If the opening distance is designed to be small, although the operating life of the switchgear is guaranteed, the breaking capacity of the switchgear is limited. In this embodiment, the switchgear operates with the second shaft 820 in a limiting engagement with the trip fastener 600 in both the open and tripped states. The trip fastener 600 remains essentially unchanged during normal opening, but rotates under the action of the main spring 650 during tripped opening, causing the second shaft 820 to move. This results in different opening distances between the moving contact assembly 910 and the stationary contact 920 during normal opening and tripped opening—the opening distance between the moving contact assembly 910 and the stationary contact 920 is smaller during the open state than during the tripped state, thus improving the switchgear's ability to interrupt fault current. Furthermore, in this embodiment, the upper connecting rod 810, lower connecting rod 860, and main spring 850 of the operating mechanism 1234 only perform a larger stroke when interrupting fault current, thereby reducing damage to the structure of the operating mechanism 1234 and extending its service life.

[0132] Specifically, the trip fastener 600 also includes a trip fastener limiting surface 630. When the operating mechanism 1234 is in the open state and the disengaged state, the second shaft 820 abuts against the trip fastener limiting surface 630 to prevent the upper connecting rod 800 from rotating relative to the trip fastener 600 along direction d2. When the operating mechanism 1234 is normally open—that is, when the operating mechanism 1234 switches from the closed state to the open state—the position of the trip fastener 600 remains basically unchanged, and the second shaft 820 abuts against the trip fastener limiting surface 630. 820 is located in the second shaft open position; when the operating mechanism 1234 trips to open—that is, when the operating mechanism 1234 switches from the closed state to the tripped state—the trip fastener 600 and the locking fastener 500 disengage, and the trip fastener 600 rotates under the action of the main spring 850. The position where the second shaft 820 abuts against the trip fastener limiting surface 630 is the second shaft trip position. The second shaft trip position moves relative to the second shaft open position, thereby causing the moving contact assembly 910 to rotate a larger angle. Furthermore, the trip fastener latching surface 610, the trip fastener mating surface 620, and the trip fastener limiting surface 630 of the trip fastener 600 are sequentially arranged and connected along the rotation direction of the trip fastener 600, and the trip fastener limiting surface 630 is also parallel to direction d5.

[0133] like Figure 4 , 8The image shows one embodiment of the jump fastener 600:

[0134] The jump fastener 600 in this embodiment has a plate-like structure. One end is a pivot end, rotatably mounted on the bracket 100 via a jump fastener pivot 830. The other end is a latching end, with a latching surface 610 and a mating surface 620. The jump fastener blocking portion 660 and the limiting surface 630 are both located between the pivot end and the latching end, respectively, at opposite ends of the jump fastener 600. Furthermore, the jump fastener 600 also includes a jump fastener shaft hole 640 and a jump fastener connecting hole 650. The shaft hole 640 is for inserting the jump fastener pivot 830, and the connecting hole 650 is for inserting the first shaft 840.

[0135] Furthermore, the jump fastener 600 is generally axe-shaped, comprising a large plate and a small plate connected to each other. The jump fastener 600 is pivotally mounted via the small plate—the small plate has a jump fastener shaft hole 640. The jump fastener fastening surface 610 and the jump fastener mating surface 620 are located at the axe blade of the axe-shaped structure of the jump fastener 600. The jump fastener limiting surface 630 is located at the side edge of the large plate, with one end connected to the jump fastener mating surface 620 and the other end connected to the small plate. The bent connection between the jump fastener mating surface 620 and the jump fastener limiting surface 630 is located at one end of the axe blade of the axe-shaped structure of the jump fastener 600. The jump fastener blocking part 660 is located at the other end of the axe blade of the axe-shaped structure of the jump fastener 600. The small plate and the two ends of the axe blade of the axe-shaped structure of the jump fastener 600 are located at the three vertices of a triangle.

[0136] 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.

[0137] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. An operating mechanism comprising a bracket (100), a locking member (500) and a rocker arm assembly (700) rotatably mounted on the bracket (100), a jumper (600) rotatably mounted on the bracket (100) at one end and cooperating with the locking member (500) at the other end, an upper connecting rod (810) rotatably connected at one end to the middle of the jumper (600) and having a second shaft (820) at the other end, a main spring (850) connected at one end to the rocker arm assembly (700) and the other end to the second shaft (820), and a rotatably mounted traction rod (200); the second shaft (820) is also used for transmission connection with a moving contact assembly (910) of a switching device; the main spring (850) provides energy for the opening, closing and tripping operations of the operating mechanism; characterized in that: The operating mechanism also includes a mating part (300) disposed on the traction rod (200) and rotating synchronously with the traction rod (200) around the rotation axis of the traction rod (200); The locking member (500) is rotatably mounted at one end and has a locking member mating part (540) at the other end; In the normal state, the operating mechanism maintains a snap-fit ​​engagement between the jump fastener (600) and the locking fastener (500), and the locking fastener engagement part (540) and the engagement part (300) maintain a first limit engagement. The traction rod (200) is driven to rotate by the external force of the release, and the driving mating part (300) and the locking part mating part (540) are released from the first limiting engagement. Then the jumping fastener (600) rotates under the action of the main spring (850) and the jumping fastener (600) drives the locking part (500) to rotate, so that the jumping fastener (600) and the locking part (500) are released from the latch engagement and a second limiting engagement is established between the locking part mating part (540) and the mating part (300).

2. The operating mechanism according to claim 1, characterized in that: In the normal state, the mating part (300) of the operating mechanism is located on one side of the locking part mating portion (540) along direction d3; in the disengaged state, the mating part 300 is located on one side of the locking part mating portion (540) along direction d4; the directions d3 and d4 are perpendicular to each other.

3. The operating mechanism according to claim 2, characterized in that: The mating component (300) is a cylindrical rod arranged parallel to the rotation axis of the traction rod (200). The rotation axes of the locking component (500) and the traction rod (200) are parallel to direction d5, and directions d3, d4 and d5 are perpendicular to each other. The mating part (540) of the locking component includes a first limiting surface (541) and a second limiting surface (542). The cylindrical rod abuts against the first limiting surface (541) of the mating part along direction d3 to establish a first limiting fit between the mating part (540) and the mating component (300). The cylindrical rod abuts against the second limiting surface (542) of the mating part along direction d4 to establish a second limiting fit between the mating part (540) and the mating component (300).

4. The operating mechanism according to claim 3, characterized in that: The traction rod (200) includes a traction rod body (210) and a mating part mounting part (220). The traction rod (200) is rotatably mounted through the traction rod body (210). Two mating part mounting parts (220) are arranged relatively spaced along the rotation axis of the traction rod (200) and are both mounted on the traction rod body (210). The two ends of the cylindrical rod are respectively fixedly mounted on the two mating part mounting parts (220). The cylindrical rod is a cylindrical rod. The traction rod body (210) includes two sets of traction rod assembly holes (211) arranged sequentially along the rotation axis of the traction rod (200). The bracket (100) includes two bracket side plates (110) arranged opposite to each other. Each bracket side plate (110) is provided with a traction rod mounting part (116). The two traction rod mounting parts (116) are respectively inserted into the two sets of traction rod assembly holes (211) and are rotatably connected to the traction rod body (210).

5. The operating mechanism according to claim 3, characterized in that: On the projection of the operating mechanism perpendicular to direction d5, the axis of the mating part (300), the rotation axis of the locking part (500), and the rotation axis of the traction rod (200) are located at the three vertices of a triangle.

6. The operating mechanism according to claim 1, characterized in that: The locking component (500) includes a locking main board (510) and a locking component mounting arm (520). The locking main board (510) is used to fasten with the jump fastener (600). A pair of side edges of the locking main board (510) are bent and connected to two sets of locking component mounting arms (520). The two sets of locking component mounting arms (520) are arranged opposite to each other along the rotation axis of the locking component (500). One end of the two sets of locking component mounting arms (520) is rotatably mounted on the bracket (100). The other end of at least one locking component mounting arm (520) serves as a locking component mating part (540).

7. The operating mechanism according to claim 6, characterized in that: One end of each of the two sets of locking mounting arms (520) is rotatably mounted on the bracket (100), and the other end of each serves as a locking mating part (540).

8. The operating mechanism according to claim 1, characterized in that: The jump fastener (600) and the locking fastener (500) always maintain a limiting fit.

9. The operating mechanism according to claim 8, characterized in that: The locking main board (510) of the jump fastener (600) and the locking fastener (500) is a main board mating end (511) at one end, and the jump fastener (600) and the main board mating end (511) are always abutted against each other; The jump fastener (600) includes a bent and connected jump fastener fastening surface (610) and a jump fastener mating surface (620); In the normal state, the latching surface (610) of the operating mechanism abuts against the mating end (511) of the main board; in the disengaged state, the mating surface (620) of the latching mechanism abuts against the mating end (511) of the main board. The mating surface (620) of the jump fastener is an arc surface, and its center coincides with the rotation center of the jump fastener (600); The end of the buckle fastening surface (610) that is away from the buckle fastening mating surface (620) and the end that is connected to the buckle fastening mating surface (620) are respectively the far end and the near end of the buckle fastening surface; the distance between the buckle fastening surface (610) and the rotation axis of the buckle fastening component (600) gradually increases from the far end to the near end of the buckle fastening surface. The operating mechanism also includes a reset structure (400), and the locking element (500) and the traction rod (200) tend to rotate in the same direction under the action of the reset structure (400); The operating mechanism also includes a locking shaft (550), and the locking element (500) is rotatably mounted on the bracket (100) via the locking shaft (550); the reset structure (400) is a reset torsion spring, which is sleeved on the locking shaft (550), with one set of spring arms cooperating with the locking element (500) and another set of spring arms cooperating with the traction rod (200); The operating mechanism also includes a lower connecting rod (860), one end of which is hinged to the upper connecting rod (810) via a second shaft (820) and the other end is used to drively connect to the moving contact assembly (910) of the switching device. In the open and disengaged states of the operating mechanism, the second shaft (820) engages with the trip fastener (600) to prevent the upper connecting rod (810) from rotating relative to the trip fastener (600) along direction d2. The second shaft (820) is also used to drive the moving contact assembly (910) to rotate to the moving contact open position when the operating mechanism switches from the mechanism closing state to the mechanism opening state, so that the opening distance between the moving contact assembly (910) and the corresponding stationary contact (920) is L1. The second shaft (820) is also used to drive the moving contact assembly (910) to rotate to the moving contact trip position when the operating mechanism switches from the mechanism closing state to the mechanism tripping state, so that the opening distance between the moving contact assembly (910) and the corresponding stationary contact (920) is L2. The trip fastener (600) also includes a trip fastener limiting surface (630). When the operating mechanism is in the open state and the disengaged state, the second shaft (820) abuts against the trip fastener limiting surface (630) to prevent the upper connecting rod (810) from rotating relative to the trip fastener (600) along the direction d2. The buckle fastening surface (610), the buckle mating surface (620), and the buckle limiting surface (630) of the buckle fastener (600) are connected in sequence; When the operating mechanism is re-engaged, external force drives the jump fastener (600) to rotate along direction d1 and reset via the rocker arm component (700). The locking fastener (500) and the traction rod (200) rotate and reset respectively, so that the mating part (300) and the locking fastener (500) release the second limit engagement and establish the first limit engagement, and so that the jump fastener (600) and the locking fastener (500) restore and maintain the buckle engagement; the directions d1 and d2 are opposite to each other.

10. A switching device, characterized in that: The switching device includes the operating mechanism described in any one of claims 1-9.

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