Operating device

Abstract

This invention relates to the field of low-voltage electrical appliances, specifically to an operating device, wherein: the length, width, and height directions of the operating mechanism are d1, d2, and d3, respectively; the rotation axes of the trip fastener, locking fastener, and re-fastener are all parallel to direction d3 and arranged sequentially along direction d2; the first trip unit is arranged side-by-side with the operating mechanism along direction d3 and sequentially with the re-fastener along direction d3, and the second trip unit is arranged side-by-side with the operating mechanism along direction d1 and sequentially with the re-fastener along direction d1; the first trip unit is located on the same side of the re-fastener and the second trip unit in direction d3; on the projection of the operating device perpendicular to direction d3, the second trip unit is located on the same side of the operating mechanism and the first trip unit; the operating device has a compact layout of its two trip units and the operating mechanism, and the two trip units can be used to respond to faults in different circuit networks, facilitating fault diagnosis.

Description

Technical Field

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

[0002] In existing photovoltaic (PV) power generation systems, a distribution cabinet system is often installed between the PV panel circuit network and the load / mains grid. This distribution cabinet system includes a rotary disconnect switch to connect and disconnect the PV panel circuit network and the load / mains grid. The rotary disconnect switch typically has a trip unit to activate in the event of a current and / or voltage fault. Generally, a current and / or voltage fault occurring in the PV panel circuit network will cause the rotary disconnect switch to trip. However, when a current and / or voltage fault may also occur in the distribution cabinet system or the load / mains grid, the product will also trip upon receiving the fault signal. Therefore, once the rotary disconnect switch trips, a comprehensive inspection of the PV panel circuit network, the distribution cabinet system, and the load / mains grid system is required, which is inefficient and difficult. Summary of the Invention

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide an operating device with a compact layout of two trip units and an operating mechanism. The two trip units can be used to respond to faults in different circuit networks, which facilitates fault diagnosis.

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

[0005] An operating device includes an operating mechanism, wherein the length direction, width direction, and height direction of the operating mechanism are directions d1, d2, and d3, respectively; the operating mechanism includes a bracket and a jump fastener, a locking fastener, and a re-fastener, which are rotatably mounted on the bracket and whose rotation axes are all parallel to direction d3. The jump fastener and the locking fastener are engaged in a snap-fit ​​engagement, and there is a first limiting engagement between the locking fastener and the re-fastener. The jump fastener, the locking fastener, and the re-fastener are arranged sequentially along direction d2.

[0006] The operating device further includes a first trip unit and a second trip unit that are respectively driven and cooperate with the re-fastener. The first trip unit and the operating mechanism are arranged side by side along direction d3. The first trip unit and the re-fastener are arranged sequentially along direction d3. The second trip unit and the operating mechanism are arranged side by side along direction d1. The second trip unit and the re-fastener are arranged sequentially along direction d1. The first trip unit is located on the same side of the re-fastener and the second trip unit in direction d3. On the projection of the operating device perpendicular to direction d3, the second trip unit is located on the same side of the operating mechanism and the first trip unit.

[0007] Furthermore, the operating mechanism also includes an operating shaft and a rocker arm, both rotatably mounted on the bracket with their rotation axes parallel to direction d3, a linkage structure, a front connecting rod, a rear connecting rod, a main spring, and a driving component with its rotation axis parallel to direction d3 and used for transmission connection with the moving contact mechanism of the switching device; the operating shaft is transmissionally connected to the rocker arm through the linkage structure, one end of the jump buckle is rotatably mounted on the bracket through the jump buckle shaft and the other end is engaged with the locking buckle, both ends of the front connecting rod are rotatably connected to the middle of the jump buckle and one end of the rear connecting rod through the front connecting shaft and the rear connecting shaft respectively, the other end of the rear connecting rod is rotatably connected to the driving component, and both ends of the main spring are connected to the rear connecting shaft and the rocker arm respectively; the rocker arm and the driving component are located at both ends of the operating mechanism in direction d1, and the jump buckle and the locking buckle shaft are located at both ends of the operating mechanism in direction d2.

[0008] Furthermore, both the first and second trip units are direct-acting trip units;

[0009] The first trip unit is at least used to drive the operating mechanism to trip when a current and / or voltage fault occurs in the circuit network electrically connected to the input terminal of the switching device;

[0010] The second trip unit is used at least to drive the operating mechanism to trip when a current and / or voltage fault occurs in the circuit network electrically connected to the output terminal of the switching device.

[0011] Furthermore, after the first trip unit drives the operating mechanism to trip, during the re-tripping operation of the operating mechanism, the first trip unit is driven to reset; the reset operation of the second trip unit and the re-tripping operation of the operating mechanism are independent of each other; after the second trip unit drives the operating mechanism to trip, the operating mechanism is allowed to re-trap only after the second trip unit is driven to reset by external force.

[0012] Furthermore, the operating device also includes a housing, and the operating mechanism, the first trip unit, and the second trip unit are all housed within the housing. The second trip unit includes a trip lever that engages with the re-fastener, and the trip lever includes a reset button. When the second trip unit actuates to drive the operating mechanism to trip, one end of the reset button protrudes outside the housing, and the trip lever engages with the re-fastener to prevent it from resetting. The reset button is pressed by an external force to drive the second trip unit to reset.

[0013] Furthermore, the second trip unit also includes a coil assembly, a push rod, a trip unit spring, and a trip lever. One end of the push rod is movably inserted into the coil assembly, and the other end is fixedly connected to the trip lever. The trip unit spring acts on the coil assembly and the push rod respectively. The trip lever includes a trip lever drive part that drives the re-fastener and a reset button disposed on the trip lever drive part. After receiving the corresponding trip signal, the second trip unit drives the push rod to push out. The trip lever and the push rod move synchronously, causing the push rod drive part to press against the re-fastener and drive it to rotate and engage with the re-fastener to prevent it from resetting. At the same time, one end of the reset button protrudes outside the device housing.

[0014] Furthermore, the middle part of the re-fastener is rotatably mounted on the bracket, and its two ends are respectively engaged with the first release device and the second release device.

[0015] Furthermore, the re-fastening component includes a re-fastening body, a first mating part that drives and cooperates with the first release device, a second mating part that drives and cooperates with the second release device, and a re-fastening part that limits and cooperates with the locking component; one end of the re-fastening body is rotatably disposed through the locking shaft and is connected to the second mating part and the re-fastening part respectively, and the other end of the re-fastening body is provided with the first mating part.

[0016] Furthermore, the second mating part, the re-fastening part, and the re-fastening body are arranged sequentially along the rotation direction of the re-fastening part, and the second mating part, the re-fastening part, and the re-fastening body are arranged sequentially along direction d1; the first mating part is arranged on one side of the re-fastening body in direction d3.

[0017] Furthermore, the first mating part is located on the same side of the second mating part, the re-fastening part, and the re-fastening body in direction d3.

[0018] Furthermore, the trip lever of the second trip unit is movable along direction d2; the first trip unit includes a first trip lever that is driven and cooperates with the re-fastener, and the first trip lever is movable along direction d2.

[0019] Furthermore, the bracket includes an upper side plate and a lower side plate arranged opposite each other along direction d3, and the jump fastener, locking fastener, re-fastener, front link, rear link, driving member and main spring are all located between the upper side plate and the lower side plate; the first release device is arranged side by side with the bracket along direction d3, and the upper side plate and the first release device are located on both sides of the lower side plate.

[0020] Furthermore, the operating mechanism also includes a transmission shaft, one radial end of the driving member is rotatably connected to the rear connecting rod and the other radial end is provided with a transmission shaft, the axial direction of the transmission shaft is parallel to direction d3 and one axial end of the transmission shaft is used to drively connect to the moving contact mechanism of the switching device.

[0021] Furthermore, the device housing includes a housing base and a housing cover that are assembled together relative to each other along direction d3. The housing base includes a housing body and a housing side cover that are detachably assembled together relative to each other along direction d1. The operating mechanism is disposed within the space enclosed by the housing body and the housing cover. The first tripping device and the second tripping device are disposed within the space enclosed by the housing body and the housing side cover.

[0022] The operating device of the present invention, with its two trip units and operating mechanism arranged in a way that allows the two trip units to engage with the re-fastener to drive the operating mechanism to trip without altering the original layout of the operating mechanism, has a reasonable and compact overall layout that reduces the overall space required for the operating device. Moreover, each trip unit can correspond to a different circuit network, so that after a trip unit actuates and drives the operating mechanism to trip, the faulty circuit network can be located based on the correspondence between the trip unit and the circuit network, thereby reducing the scope of fault search and improving the efficiency and difficulty of fault diagnosis.

[0023] In addition, the tripping status of the conditional trip unit serves as a warning and restriction, preventing the switching equipment from being closed before the fault is cleared, thus avoiding situations that could affect personnel safety.

[0024] In addition, the wiring mechanism improves the ease of wiring each trip unit. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the operating device of the present invention;

[0026] Figure 2 This is an exploded view of the operating device of the present invention;

[0027] Figure 3 This is a projected view of the operating device of the present invention, with the operating mechanism in the operating mechanism closed state and the second trip unit in the trip unit reset state.

[0028] Figure 4 This is a projected view of the operating device of the present invention, with the operating mechanism in the operating mechanism tripped state and the second trip device in the trip device activated state.

[0029] Figure 5 This is a three-dimensional structural diagram of the operating device of the present invention with the device shell removed;

[0030] Figure 6 This is a projected view of the operating device of the present invention with the device housing removed;

[0031] Figure 7 This is a cross-sectional view of the operating mechanism of the present invention;

[0032] Figure 8This is a three-dimensional structural diagram of the operating mechanism of the present invention with the upper side plate removed;

[0033] Figure 9 This is a schematic diagram of the structure of the second trip unit of the present invention;

[0034] Figure 10 This is an exploded view of the second trip unit of the present invention;

[0035] Figure 11 This is a schematic diagram of the release lever of the present invention;

[0036] Figure 12 This is a structural schematic diagram of the fastener of the present invention from one perspective;

[0037] Figure 13 This is a structural schematic diagram of the fastener of the present invention from another perspective;

[0038] Figure 14 This is a structural schematic diagram of the housing, first trip unit, and second trip unit of the present invention in an assembled state;

[0039] Figure 15 This is a schematic diagram of the switching device, circuit network, and control system of the present invention.

[0040] Explanation of reference numerals in the attached figures

[0041] Device housing 100, housing base 110, housing base body 111, housing base side cover 112, housing cover 120;

[0042] Operating mechanism 1234;

[0043] Bracket 200, upper side plate 210, lower side plate 220;

[0044] Operating axis 300;

[0045] Linkage structure 400, linkage crank 410, linkage rod 420;

[0046] Rocker arm 500;

[0047] Jump fastener 610;

[0048] Front linkage 620;

[0049] Rear link 630;

[0050] Drive component 640;

[0051] Drive shaft 650;

[0052] Locking fastener 660;

[0053] Re-fastener 670, re-fastener body 671, first mating part 672, second mating part 673, re-fastener part 674;

[0054] Stop 680;

[0055] Jump buckle 691;

[0056] Front connecting shaft 692;

[0057] Rear connecting shaft 693;

[0058] Connecting shaft 694;

[0059] Locking shaft 696;

[0060] Another 697 shafts were fastened;

[0061] Main spring 700;

[0062] Trip spring 800;

[0063] First trip unit 910;

[0064] Second trip unit 920;

[0065] Coil assembly 921, push rod 922, push rod main body 9221, push rod connecting plate 9222, push rod locking platform 9223, trip spring 923, trip rod 924, trip rod drive unit 925, drive unit connecting plate 9251, drive unit cheek plate 9252, drive unit back plate 9253, drive unit slot 9254, drive unit slot 9255, reset button 926;

[0066] Wiring mechanism 930. Detailed Implementation

[0067] 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.

[0068] The switching device of the present invention is preferably a rotary disconnecting switch, which includes an operating device and a switching part. The switching part includes at least one switching unit, and the switching unit includes a contact device, which includes a moving contact mechanism and a stationary contact used in conjunction. The operating device includes an operating mechanism 1234, which is convexly connected to the moving contact mechanism to drive the moving contact mechanism to close and open with the corresponding stationary contact, thereby closing and opening the switching unit, and thus enabling the switching device to conduct and disconnect. Further, the switching part includes two or more switching units, and each switching unit is stacked together along the rotation axis of the moving contact mechanism (with the height direction of the operating mechanism 1234 mentioned later, i.e., direction d3). The moving contact mechanisms of each switching unit rotate synchronously under the drive of the operating mechanism 1234, thereby enabling each moving contact mechanism to close and open with the corresponding stationary contact. The contact devices of each switching unit together form the contact system of the switching device.

[0069] It should be noted that the switching device of the present invention is not limited to rotary disconnect switches, but can also be a circuit breaker—for example, a molded case circuit breaker.

[0070] like Figures 1-7 As shown, the operating mechanism 1234 includes a jump fastener 610 and a locking fastener 660 that are rotatably mounted and engaged with each other; the operating device also includes at least two trip units, the circuit networks corresponding to each trip unit are independent of each other, and each circuit network (i.e., the circuit network corresponding to each trip unit) is electrically connected to the switchgear to which the operating device belongs (i.e., the switchgear including the operating device) (specifically, the circuit network corresponding to each trip unit is electrically connected to the contact system of the switchgear, that is, the circuit networks corresponding to each trip unit are electrically connected together through the contact system of the switchgear). Each of the aforementioned trip units is at least used to, when a current and / or voltage fault occurs in the circuit network corresponding to its corresponding trip unit, to move from the trip unit reset state to the trip unit activated state, thereby driving the tripping element 610 and the locking element 660 to disengage, causing the operating mechanism 1234 to trip and switching from the operating mechanism closed state to the operating mechanism tripped state; that is, when the switchgear of the present invention is in the closed state, and the operating mechanism 1234 is also in the closed state (the closed state is the working state of the operating mechanism 1234 when the switchgear is in the closed state), when a current and / or voltage fault occurs in the circuit network corresponding to each trip unit, the trip unit receives the corresponding trip signal and moves from the trip unit reset state to the trip unit activated state, thereby driving the tripping element 610 and the locking element 660 to disengage, causing the operating mechanism 1234 to trip, and switching from the operating mechanism closed state to the operating mechanism tripped state (the tripped state is the working state of the operating mechanism of the switchgear of the present invention when the switchgear is in the tripped state).

[0071] In the existing technology, a large power grid system is often composed of multiple circuit networks, which are connected to each other through one or more switching devices. When a voltage and / or current fault occurs in any of the circuit networks connected to the switching device, the switching device will trip. During fault diagnosis, it is necessary to check all the circuit networks connected to the switching device. The scope of the investigation is large, which greatly increases the difficulty and workload of fault diagnosis.

[0072] The operating device has each trip unit corresponding to a different circuit network. Therefore, after a certain trip unit is activated and drives the operating mechanism 1234 to trip, the faulty circuit network can be locked according to the correspondence between the trip unit and the circuit network, thereby reducing the scope of fault search and improving the efficiency and difficulty of fault diagnosis.

[0073] Furthermore, such as Figure 15As shown, in the operating device, each trip unit is connected to the upper control system (such as a host computer or an intelligent controller / intelligent control chip integrated in the switchgear). The control system is connected to the circuit network corresponding to each trip unit and is used to monitor the operating status of each circuit network. When a current and / or voltage fault occurs in a certain circuit network, the control system outputs a trip signal to the corresponding trip unit to make the trip unit act, thereby driving the operating mechanism 1234 to trip.

[0074] Specifically, "current fault" can be overload current fault, short circuit current fault, etc., while "voltage fault" can be overvoltage fault, undervoltage fault, etc.

[0075] Furthermore, such as Figures 2-7 As shown, of the at least two trip units, one trip unit is a first trip unit 910, and the other trip unit is a second trip unit 920. The first trip unit 910 is used at least to drive the operating mechanism 1234 to trip when a current and / or voltage fault occurs in the circuit network electrically connected to the input terminal of the switching device; that is, the first trip unit 910 corresponds to the circuit network electrically connected to the input terminal of the switching device (input circuit network), and the first trip unit 910 drives the operating mechanism 1234 to trip at least when a voltage and / or current fault occurs in the input circuit network. The second trip unit 920 is used at least to drive the operating mechanism 1234 to trip when a current and / or voltage fault occurs in the circuit network electrically connected to the output terminal of the switching device; that is, the second trip unit 920 corresponds to the circuit network electrically connected to the output terminal of the switching device (output circuit network), and the second trip unit 920 drives the operating mechanism 1234 to trip at least when a voltage and / or current fault occurs in the output circuit network.

[0076] Furthermore, such as Figures 1-7As shown, the second trip unit 920 is a conditional trip unit. The reset operation of the conditional trip unit and the re-tightening operation of the operating mechanism 1234 are independent of each other. The conditional trip unit is driven to reset by an external force (for example, the external force is the force of a machine other than the operator or the switchgear of the present invention, or the external force comes from the machine installed in the switchgear of the present invention) and is reset from the trip unit action state to the trip unit reset state before the operating mechanism 1234 is allowed to re-tighten. That is, after the conditional trip unit drives the operating mechanism 1234 to trip, the operating mechanism 1234 can only re-tighten after the conditional trip unit is reset from the trip unit action state to the trip unit reset state under the drive of an external force (i.e., after the reset operation of the conditional trip unit is completed). (Even if the locking member 660 and the tripping member 610 are restored and maintain the latching engagement), so that the operating mechanism 1234 can perform normal closing and opening operations. The trip unit action state of the conditional trip unit plays a warning and restriction role, avoiding the situation of closing the switchgear before the fault is cleared, which may affect personnel safety. Furthermore, among the at least two trip units, all trip units other than the conditional trip unit are general trip units; when the operating mechanism 1234 trips again from the tripped state, the reset structure of the switchgear (e.g., the rocker arm 500 of the operating mechanism 1234) drives the general trip unit to reset from the trip unit operating state to the trip unit reset state; that is, after any of the general trip units trips the operating mechanism 1234, when the operating mechanism 1234 trips again (that is, during the re-tripping operation of the operating mechanism 1234), the reset structure of the switchgear drives the general trip unit to reset from the trip unit operating state to the trip unit reset state, without the need to reset the general trip unit separately.

[0077] Specifically, such as Figures 2-8As shown, the operating mechanism 1234 further includes a rotatably configured re-fastening member 670, which has a first limiting engagement with the locking member 660. In normal operation (operating mechanism open state, operating mechanism closed state, operating mechanism performing manual closing operation, and operating mechanism performing manual opening operation), the re-fastening member 670 and the locking member 660 maintain the first limiting engagement, ensuring that the locking member 660 and the tripping member 610 are engaged. In the closed state, after each trip unit receives a corresponding tripping signal, it drives the re-fastening member 670 to rotate and release the first limiting engagement from the locking member 660, thereby releasing the tripping member 610 from the locking member 660. Furthermore, after receiving the corresponding trip signal, the conditional trip unit drives the re-clamping member 670 to rotate, thereby releasing the first limit engagement with the locking member 660 and holding the re-clamping member 670 in the re-clamping member tripped position. This causes the tripping member 610 and the locking member 660 to release their latching engagement, thus switching the operating mechanism 1234 from the operating mechanism closed state to the operating mechanism tripped state. When the conditional trip unit is in the tripped state, the re-clamping member 670 is held in the re-clamping member tripped position by the conditional trip unit, preventing the tripping member 610 and the locking member 660 from restoring and maintaining their latching engagement. The operating mechanism 1234 cannot latch again. After the conditional trip unit resets, it releases the limit on the re-clamping member 670, thereby resetting the re-clamping member 670 and establishing the first limit engagement with the locking member 660. This allows the tripping member 610 and the locking member 660 to restore and maintain their latching engagement.

[0078] Furthermore, such as Figures 1-4 As shown in Figures 1 and 14, the operating device of this embodiment also includes a device housing 100, and the operating mechanism 1234 and each trip unit are disposed inside the device housing 100.

[0079] like Figures 1-15 As shown, one embodiment of the operating device is illustrated.

[0080] like Figures 2-7 As shown in Figure 14, the operating device of this embodiment is provided with two trip units, one of which is the first trip unit 910 and the other is the second trip unit 920.

[0081] Specifically, the switching device of the present invention is preferably applied to a photovoltaic power generation system, with its input terminal electrically connected to the circuit network of the photovoltaic panel and its output terminal connected to the circuit network of the distribution cabinet; the first trip unit 910 corresponds to the circuit network of the photovoltaic panel, and the second trip unit 920 corresponds to the circuit network of the distribution cabinet; when a current and / or voltage fault occurs in the circuit network of the photovoltaic panel, the first trip unit 910 drives the operating mechanism 1234 to trip; when a current and / or voltage fault occurs in the circuit network of the distribution cabinet, the second trip unit 920 drives the operating mechanism 1234 to trip. Further, the distribution cabinet is equipped with at least one electrical device, such as an inverter.

[0082] In other embodiments, the switching device of the present invention can also be applied between a power supply circuit network and a load circuit network, wherein the power supply circuit network is electrically connected to the input terminal of the switching device, and the load circuit network is electrically connected to the output terminal of the switching device; the first trip unit 910 corresponds to the power supply circuit network, and when a current and / or voltage fault occurs in the power supply circuit network, the first trip unit 910 drives the operating mechanism 1234 to trip; the second trip unit 920 corresponds to the load circuit network, and when a current and / or voltage fault occurs in the load circuit network, the second trip unit 920 drives the operating mechanism 1234 to trip.

[0083] like Figures 1-2 As shown in Figure 14, the device housing 100 includes a housing base 110 and a housing cover 120 that are assembled together. Further, the housing base 110 includes a detachable housing body 111 and a housing side cover 112 that are assembled together. The structural design of the device housing 100 facilitates the installation of the operating mechanism 1234 and the trip unit, improving assembly efficiency and simplifying the production and processing of the device housing 100, thus reducing complexity. The operating mechanism 1234 is located within the space enclosed by the housing body 111 and the housing cover 120, while the first trip unit 910 and the second trip unit 920 are located within the space enclosed by the housing body 111 and the housing side cover 112, facilitating the replacement, maintenance, and disassembly of the trip units and achieving modular assembly of the trip unit and the operating mechanism.

[0084] like Figures 2-7As shown in Figure 13, the re-fastening member 670 is rotatably mounted in the middle (specifically, the re-fastening member 670 is rotatably mounted on the bracket 200 of the operating mechanism 1234), and its two ends are respectively engaged with the first trip unit 910 and the second trip unit 920. Further, the re-fastening member 670 includes a re-fastening body 671, a first mating part 672 engaged with the first trip unit 910, a second mating part 673 engaged with the second trip unit 920, and a re-fastening part 674 engaged with the locking member 660 for limiting. One end of the re-fastening body 671 is rotatably mounted on the bracket 200 of the operating mechanism 1234 via a re-fastening shaft 697, and this end of the re-fastening body 671 is connected to the second mating part 673 and the re-fastening part 674 respectively. The other end of the re-fastening body 671 is provided with the first mating part 672. The first mating part 672 and the second mating part 673 are located at both ends of the re-fastening member 670 in the overall structure of the re-fastening member 670. Furthermore, the second mating part 673, the re-fastening part 674, and the re-fastening body 671 are arranged sequentially along the rotation direction of the re-fastening member 670 (i.e., the circumferential direction of the re-fastening shaft 697); the second mating part 673, the re-fastening part 674, and the re-fastening body 671 are arranged sequentially along direction d1; the first mating part 672 is arranged on one side of the re-fastening body 671 along the rotation axis of the re-fastening member 670 (i.e., along the axis of the re-fastening member 697); the first mating part 672 is located on the same side of the second mating part 673, the re-fastening part 674, and the re-fastening body 671 in direction d1.

[0085] It should be noted that the re-fastener 670 is not limited to the above-described implementation. Those skilled in the art can adjust the specific structure of the re-fastener 670 based on the positional relationship and transmission structure between the re-fastener 670, the first trip unit 910, and the second trip unit 920, using conventional technical means in the art.

[0086] Furthermore, such as Figures 2-7 As shown, the first trip unit 910 is a general trip unit, and the second trip unit 920 is a conditional trip unit.

[0087] Specifically, after the first trip unit 910 trips the operating mechanism 1234, during the re-tightening process of the operating mechanism 1234, the rocker arm 500 of the operating mechanism 1234 drives the first trip unit 910 to reset from the trip unit action state to the trip unit reset state. After the second trip unit 920 (conditional trip unit) trips the operating mechanism 1234, it engages with the re-clamping member 670 of the operating mechanism 1234 to keep it in the re-clamping member tripped position, preventing the re-clamping member 670 from resetting and establishing a first limit engagement with the locking member 660. This prevents the tripping member 610 and the locking member 600 from restoring and maintaining the latching engagement, thus preventing the operating mechanism 1234 from successfully re-clamping, i.e., the switchgear cannot be closed.

[0088] Furthermore, such as Figures 1-4As shown, the second trip unit 920 (conditional trip unit) includes a trip lever 924 for driving the operating mechanism 1234 to trip, and the trip lever 924 includes a reset button 926; when the second trip unit 920 (conditional trip unit) is in the trip unit's operating state, one end of the reset button 926 protrudes outside the device housing 100, and the trip lever 924 is limited and engaged with the re-clamping member 670 to keep it in the re-clamping member tripped position.

[0089] Furthermore, such as Figure 2 , 5 As shown in Figure 7, each of the trip units is a direct-acting trip unit and includes an electromagnetic coil. The operating device of this embodiment also includes a wiring mechanism 930, which is used to connect the electromagnetic coil of each trip unit to an external circuit (e.g., a control system). The wiring mechanism 930 improves the wiring convenience of each trip unit. Furthermore, the wiring mechanism 930 is a plug-in type wiring component.

[0090] Specifically, the first trip unit 910 can be implemented using existing technology. For example, the first trip unit 910 includes a first coil assembly (which includes an electromagnetic coil), a first push rod, a first trip unit spring, and a first trip lever. The first trip lever is in transmission engagement with the first mating part 672 of the re-fastener 670. After receiving the corresponding trip signal, the first trip unit 910 drives the re-fastener 670 to rotate through the first trip lever, thereby releasing the first limiting engagement with the locking member 660, thus releasing the latching engagement between the trip fastener 610 and the locking member 660.

[0091] Specifically, such as Figures 9-11 The diagram illustrates one embodiment of the second trip unit 920: The second trip unit 920 of this embodiment includes a coil assembly 921 (which includes an electromagnetic coil), a push rod 922, a trip unit spring 923, and a trip lever 924; one end of the push rod 922 is movably inserted into the coil assembly 921, and the other end is fixedly connected to the trip lever 924; the trip unit spring 923 acts on both the coil assembly 921 and the push rod 922; the trip lever 924 includes a trip lever drive portion 925 that engages with the re-clamping member 670, and a reset button 926 disposed on the trip lever drive portion 925. After receiving the corresponding trip signal, the second trip unit 920 drives the push rod 922 to push out. The trip rod 924 moves synchronously with the push rod 922, causing the trip rod driving part 925 to press against the re-fastening member 670 (specifically the second mating part 673 of the re-fastening member 670) and drive it to rotate so that the re-fastening member 670 and the locking member 660 are released from the first limiting engagement, thereby releasing the latching engagement of the jump fastener 610 and the locking member 660. At the same time, one end of the reset button 926 protrudes outside the device housing 100. When the reset button 926 is pressed by external force, it drives the second trip unit 920 to reset.

[0092] Furthermore, the push rod 922 includes a push rod main body 9221 and a push rod connecting plate 9222. One end of the push rod main body 9221 is movably inserted into the coil assembly 921, and the other end is connected to the push rod connecting plate 9222. The trip spring 932 is sleeved on the push rod main body 9221, with one end cooperating with the coil assembly 921 and the other end cooperating with the push rod connecting plate 9221. The trip rod 924 includes a trip rod driving part 925 and a reset button 926. The trip rod driving part 925 includes a driving part connecting plate 9251, a driving part cheek plate 9252, a driving part back plate 9253, and a driving part slot 9254. The two driving part cheek plates 9252 are arranged opposite each other and located on both radial sides of the push rod main body 9221. The driving part back plate 9253 is bent to the two driving part cheek plates 9252 respectively. The three components are connected and form a U-shaped structure with a U-shaped groove in the middle. The main rod 9221 is located in the U-shaped groove. One end of the drive unit cheek plate 9252 and the drive unit back plate 9253 are connected to one side of the drive unit connecting plate 9251. The trip rod drive unit 925 has a scoop-shaped structure. The drive unit back plate 9253 is preferably set parallel to the cover 120 of the device housing 100. One end of the coil assembly 921 is always located in one end of the U-shaped groove. The reset button 926 is set on the other side of the drive unit connecting plate 9251. The side of the drive unit connecting plate 9251 with the reset button 926 is engaged with the re-fastener 970 of the operating mechanism 1234. Two drive unit slots 9254 are formed in the trip rod drive unit 925 and are respectively inserted into the two ends of the top rod connecting plate 9222. Furthermore, the trip lever drive unit 925 also includes a drive unit slot 9255, which is disposed on the side of the drive unit connecting plate 9251 facing the push rod connecting plate 9222; the push rod 922 also includes a push rod locking platform 9223, which is disposed on the side of the push rod connecting plate 9222 facing the drive unit connecting plate 9251; the drive unit slot 9255 and the push rod locking platform 9223 engage and cooperate to prevent the push rod connecting plate 9222 from disengaging from the drive unit slot 9255.

[0093] Furthermore, the trip lever drive unit 925 also includes drive unit limiting ribs. Two drive unit limiting ribs are respectively disposed on the opposite sides of the two drive unit cheek plates 9252, and each drive unit limiting rib forms a drive unit slot 9254 between itself and the drive unit connecting plate 9251. It should be noted that the drive unit slot 9254 can also be directly disposed on the drive unit connecting plate 9251. In addition, the connection method between the trip lever 924 and the push rod 922 is not limited to the above method. Those skilled in the art can use conventional technical means to achieve a fixed connection between the two in various other ways, such as through bolts, screws, or clips.

[0094] like Figures 1-8As shown, the length direction, width direction and height direction of the operating mechanism 1234 are direction d1, direction d2 and direction d3 respectively, and direction d1, direction d2 and direction d3 are perpendicular to each other.

[0095] like Figures 2-8 As shown, the operating mechanism 1234 further includes a bracket 200, a rocker arm 500, a front connecting rod 620, a rear connecting rod 630, and a main spring 700. The rocker arm 500, the jump fastener 610, the locking fastener 660, and the re-fastener 670 are rotatably mounted on the bracket 200, and their rotation axes are all parallel to direction d3. One end of the jump fastener 610 (the pivot end of the jump fastener) is rotatably mounted on the bracket 200, and the other end (the latch end of the jump fastener) is latched with the locking fastener 660. One end of the front connecting rod 620 is rotatably connected to the middle part of the jump fastener 610 (the part of the jump fastener 610 located at the pivot end and the latch end of the jump fastener) through the front connecting shaft 692, and the other end is rotatably connected to one end of the rear connecting rod 630 through the rear connecting shaft 693. The rear connecting rod 630 is used to drive the moving contact mechanism of the switch. The two ends of the main spring 700 are respectively connected to the rear connecting shaft 693 and the rocker arm 500. The operating mechanism 1234 is a four-bar to five-bar linkage conversion operating mechanism. Its operation process and working principle are the same as those of the prior art, and will not be elaborated here.

[0096] Specifically, the jump fastener 610 is rotatably mounted on the bracket 200 via the jump fastener shaft 691, the locking fastener 660 is rotatably mounted on the bracket 200 via the locking shaft 696, the re-fastener 670 is rotatably mounted on the bracket 200 via the re-fastener shaft 697, and the rocker arm 500 is rotatably mounted on the bracket 200 via the rocker arm shaft 695.

[0097] Furthermore, such as Figures 2-8 As shown, the operating mechanism 1234 also includes an operating shaft 300 for external force operation, a linkage structure 400, and a driving member 640. The operating shaft 300 and the driving member 640 are rotatably arranged, and their rotation axes are parallel to direction d3. The operating shaft 300 is connected to the rocker arm 500 through the linkage structure 400 to drive the rocker arm 500 to rotate, so that the operating mechanism 1234 can perform closing operation, opening operation, and re-clamping operation. One end of the rear connecting rod 630 is rotatably connected to the front connecting rod 620 through the rear connecting shaft 693, and the other end is rotatably connected to the driving member 640 through the connecting shaft 694. The driving member 640 is coaxially arranged with the moving contact mechanism of the switchgear and is rotatably connected to the moving contact mechanism of the switchgear.

[0098] Specifically, the operating shaft 300 and the driving component 640 are coaxially arranged; the operating shaft 300 is rotatably mounted on the bracket 200, and the driving component 640 is sleeved on the operating shaft 300 (specifically, the driving component 640 has a driving component shaft hole in the middle for the operating shaft 300 to pass through); the linkage structure 400 includes a linkage crank 410 and a linkage rod 420 that are arranged on the operating shaft 300 and rotate synchronously therewith, one end of the linkage rod 420 is rotatably connected to the linkage crank 410 and the other end is rotatably connected to the rocker arm 500; the operating shaft 300 is preferably connected to the two rocker arm legs of the rocker arm 500 through two sets of linkage structures 400.

[0099] Furthermore, such as Figures 2-8 As shown, the operating mechanism 1234 also includes a transmission shaft 650, which is connected to and rotates synchronously with the driving member 640. The transmission shaft 650 is arranged to rotate circumferentially around the rotation axis of the driving member 640. One radial end of the driving member 640 is rotatably connected to the rear connecting rod 630 through a connecting shaft 694, and the other radial end is fixedly connected to the transmission shaft 650. One axial end of the transmission shaft 650 is used to drive the moving contact mechanism of the switching device.

[0100] In another embodiment where the drive member 640 is connected to the moving contact mechanism, one axial end of the drive member 640 is connected to the moving contact mechanism.

[0101] Furthermore, such as Figures 3-7 As shown, the operating mechanism 1234 also includes a release spring 800, which acts on the jump fastener 660. When the operating mechanism 1234 is released, the jump fastener 660 is accelerated to rotate, thereby improving the release efficiency of the operating mechanism 1234.

[0102] Specifically, the release spring 800 is a tension spring, with one end connected to the bracket 200 and the other end connected to the release buckle 600.

[0103] Furthermore, such as Figure 5 , 7 As shown in Figure 8, the operating mechanism 1234 further includes a fixed stop 680—preferably fixedly mounted on the bracket 200. In both the open and closed states of the operating mechanism 1234, the drive shaft 650 abuts against the stop 680. Furthermore, the stop 680 is an elastic stop made of an elastic material—for example, insulating rubber.

[0104] Furthermore, such as Figures 2-8As shown, the bracket 200 includes an upper side plate 210 and a lower side plate 220 arranged opposite each other along direction d3. The jump fastener 610, locking fastener 660, re-fastener 670, front connecting rod 620, rear connecting rod 630, and driving member 640 are all arranged between the upper side plate 210 and the lower side plate 220. The two axial ends of the transmission shaft 650 are respectively guided and limited by the upper side plate 210 and the lower side plate 220—for example, both the upper side plate 210 and the lower side plate 220 are provided with guide holes, and the two ends of the transmission shaft 650 are respectively inserted into the two guide holes—one axial end of the transmission shaft 650 passes through the guide hole of the lower side plate 220 and is connected to the moving contact mechanism for transmission. The rocker arm 500 includes two rocker arm legs arranged opposite each other along direction d3. Each of the two rocker arm legs is rotatably mounted on the upper side plate 210 and the lower side plate 220 through a rocker arm shaft 695.

[0105] like Figures 2-7 As shown in Figures 1 and 14, one layout of the switching device in this embodiment is disclosed.

[0106] In the switching device of this embodiment, the trip fastener 610, the locking fastener 660, and the re-fastener 670 are arranged sequentially along direction d2. The first trip unit 910 and the operating mechanism 1234 are arranged side by side along direction d3. The first trip unit 910 and the re-fastener 670 are arranged sequentially along direction d3 (or, the first trip unit 910 and the re-fastener 670 are arranged side by side along direction d3). The second trip unit 920 and the operating mechanism 1234 are arranged side by side along direction d1. The second trip unit 920 and the re-fastener 670 are arranged sequentially along direction d1 (or, the second trip unit 920 and the re-fastener 670 are arranged side by side along direction d1). The first trip unit 910 is located on the same side of the second trip unit 920 and the re-fastener 670 in direction d3. On the projection of the operating device perpendicular to direction d3, the second trip unit 920 is located on the same side of the operating mechanism 1234 and the first trip unit 910.

[0107] In this embodiment, the layout of the two trip units and the operating mechanism 1234 allows the two trip units to engage with the re-fastener 670 to drive the operating mechanism 1234 to trip without changing the original layout of the operating mechanism 1234. The overall layout is reasonable and compact, reducing the overall space required for the operating device.

[0108] Furthermore, the rocker arm 500 and the drive member 640 of the operating mechanism 1234 are located at both ends of the operating mechanism 1234 in direction d1, and the re-fastener 670 and the jump fastener shaft 691 of the operating mechanism 1234 are located at both ends of the operating mechanism 1234 in direction d2.

[0109] Furthermore, the jump buckle 610, drive member 640, and stop member 680 are arranged sequentially along direction d1; the jump buckle shaft 691 and release spring 800 are located at the same end of the operating mechanism 1234 in direction d2; the two sets of linkage structures 400 are located on both sides of the upper side plate 210 and lower side plate 220 of the bracket 200 along direction d3 respectively.

[0110] Furthermore, the push rod 922 and the trip rod 924 of the second trip unit 920 (which together form a push rod assembly) are moved as a whole along direction d2.

[0111] Furthermore, the top rod and the trip rod of the first trip unit 910 are moved as a whole along direction d2.

[0112] Furthermore, the wiring mechanism 930 is located on one side of the operating mechanism 1234 in direction d3, that is, the wiring mechanism 930 is arranged side by side with the operating mechanism 1234 in direction d3. At the same time, the wiring mechanism 930 is also located on one side of the operating mechanism 1234 in direction d2, that is, the wiring mechanism 930 is arranged side by side with the operating mechanism 1234 in direction d2. The fastener 670 is located at one end of the operating mechanism 1234 in direction d2, and the wiring mechanism 930 is located outside the other end of the operating mechanism 1234.

[0113] Furthermore, in the device housing 100, the housing base 110 and the housing cover 120 are assembled together relative to each other along direction d3, and the housing base body 111 and the housing base side cover 112 are assembled together relative to each other and detachably along direction d1.

[0114] In other embodiments of the operating device, the operating shaft 300, linkage structure 400, driving component 640, transmission shaft 650, stop component 680, and trip spring 800 are all omitted according to actual needs; for example, when the operating device is applied to a molded case circuit breaker, the operating shaft 300, linkage structure 400, driving component 640, transmission shaft 650, and stop component 680 can all be omitted.

[0115] 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.

[0116] 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 device, comprising an operating mechanism (1234), wherein the length direction, width direction, and height direction of the operating mechanism (1234) are respectively direction d1, direction d2, and direction d3; the operating mechanism (1234) comprises a bracket (200) and a jump fastener (610), a locking fastener (660), and a re-fastener (670) respectively rotatably mounted on the bracket (200) with their rotation axes parallel to direction d3, wherein the jump fastener (610) and the locking fastener (660) are engaged, and there is a first limiting engagement between the locking fastener (660) and the re-fastener (670), and the jump fastener (610), the locking fastener (660), and the re-fastener (670) are arranged sequentially along direction d2; Its features are: The operating device further includes a first trip unit (910) and a second trip unit (920) that are respectively driven and cooperate with the re-fastener (670). The first trip unit (910) and the operating mechanism (1234) are arranged side by side along direction d3. The first trip unit (910) and the re-fastener (670) are arranged sequentially along direction d3. The second trip unit (920) and the operating mechanism (1234) are arranged side by side along direction d1. The second trip unit (670) and the re-fastener (670) are arranged sequentially along direction d1. The first trip unit (910) is located on the same side of the re-fastener (670) and the second trip unit (920) in direction d3. On the projection of the operating device perpendicular to direction d3, the second trip unit (920) is located on the same side of the operating mechanism (1234) and the first trip unit (910).

2. The operating device according to claim 1, characterized in that: The operating mechanism (1234) further includes an operating shaft (300) and a rocker arm (500) respectively rotatably mounted on the bracket (200) with their rotation axes parallel to direction d3, a linkage structure (400), a front link (620), a rear link (630), a main spring (700), and a driving component (640) with its rotation axis parallel to direction d3 and used for transmission connection with the moving contact mechanism of the switching device; the operating shaft (300) is transmissionally connected to the rocker arm (500) through the linkage structure (400), and one end of the jump fastener (610) is rotatably mounted on the bracket (200) through the jump fastener shaft (691) and the other end is connected to the lock. The fastener (660) is fastened together. The two ends of the front connecting rod (620) are rotatably connected to the middle of the jump fastener (610) and one end of the rear connecting rod (630) through the front connecting shaft (692) and the rear connecting shaft (693), respectively. The other end of the rear connecting rod (630) is rotatably connected to the driving member (640). The two ends of the main spring (700) are connected to the rear connecting shaft (693) and the rocker arm (500), respectively. The rocker arm (500) and the driving member (640) are located at both ends of the operating mechanism (1234) in the direction d1, and the fastener (670) and the jump fastener shaft (691) are located at both ends of the operating mechanism (1234) in the direction d2.

3. The operating device according to claim 1, characterized in that: The first trip unit (910) and the second trip unit (920) are both direct-acting trip units; The first trip unit (910) is at least used to drive the operating mechanism (1234) to trip in the event of a current and / or voltage fault in the circuit network electrically connected to the input terminal of the switching device; The second trip unit (920) is used at least to drive the operating mechanism (1234) to trip when a current and / or voltage fault occurs in the circuit network electrically connected to the output of the switching device.

4. The operating device according to claim 3, characterized in that: After the first trip unit (910) trips the operating mechanism (1234), during the re-tripping operation of the operating mechanism (1234), the first trip unit (910) is driven to reset. The reset operation of the second trip unit (920) and the re-tripping operation of the operating mechanism (1234) are independent of each other. After the second trip unit (920) trips the operating mechanism (1234), the operating mechanism (1234) is allowed to re-trip only after the second trip unit (920) is driven to reset by external force.

5. The operating device according to claim 4, characterized in that: The operating device also includes a housing (100), and the operating mechanism (1234), the first trip unit (910), and the second trip unit (910) are all placed inside the housing (100). The second trip unit (920) includes a trip lever (924) that is in transmission cooperation with the re-fastener (670), and the trip lever (924) includes a reset button (926). When the second trip unit (920) drives the operating mechanism (1234) to trip, one end of the reset button (926) protrudes outside the housing (100), and the trip lever (924) is limited to prevent it from resetting by the re-fastener (670). The reset button (926) is pressed by an external force to drive the second trip unit (920) to reset.

6. The operating device according to claim 5, characterized in that: The second trip unit (920) further includes a coil assembly (921), a push rod (922), a trip unit spring (923), and a trip lever (924). One end of the push rod (922) is movably inserted into the coil assembly (921), and the other end is fixedly connected to the trip lever (924). The trip unit spring (923) acts on the coil assembly (921) and the push rod (922). The trip lever (924) includes a trip lever drive part (924) that is driven by the re-clamping member (670). 25) and a reset button (926) provided on the trip lever drive unit (925); after the second trip unit (920) receives the corresponding trip signal, it drives the push rod (922) to push out, and the trip lever (924) moves synchronously with the push rod (922), so that the push rod drive unit (925) presses against the re-fastener (670) and drives it to rotate and cooperates with the re-fastener (670) to prevent it from resetting, while at the same time, one end of the reset button (926) protrudes outside the device housing (100).

7. The operating device according to claim 1, characterized in that: The re-fastener (670) is rotatably mounted on the bracket (200) at the middle, and its two ends are respectively engaged with the first release device (910) and the second release device (920) for transmission.

8. The operating device according to claim 7, characterized in that: The re-fastening element (670) includes a re-fastening body (671), a first mating part (672) that is driven to cooperate with the first release device (910), a second mating part (673) that is driven to cooperate with the second release device (920), and a re-fastening part (674) that is limited to cooperate with the locking element (660); one end of the re-fastening body (671) is rotatably disposed through the locking shaft (696) and the end is connected to the second mating part (673) and the re-fastening part (674) respectively, and the other end of the re-fastening body (671) is provided with the first mating part (672).

9. The operating device according to claim 8, characterized in that: The second mating part (673), the re-fastening part (674), and the re-fastening body (671) are arranged sequentially along the rotation direction of the re-fastener (670), and the second mating part (673), the re-fastening part (674), and the re-fastening body (671) are arranged sequentially along direction d1; the first mating part (672) is arranged on one side of the re-fastening body (671) in direction d3.

10. The operating device according to claim 9, characterized in that: The first mating part (672) is located on the same side of the second mating part (673), the re-fastening part (674) and the re-fastening body (671) in the direction d3; The second trip unit (920) has a trip lever (924) that is movable along direction d2; the first trip unit (910) includes a first trip lever that is driven to engage with the re-fastener (670), and the first trip lever is movable along direction d2; The bracket (200) includes an upper side plate (210) and a lower side plate (220) arranged opposite each other along direction d3. The jump fastener (610), locking fastener (660), re-fastener (670), front link (620), rear link (630), driving member (640) and main spring (700) are all located between the upper side plate (210) and the lower side plate (220); the first release device (910) is arranged side by side with the bracket (200) along direction d3, and the upper side plate (210) and the first release device (910) are located on both sides of the lower side plate (220); The operating mechanism (1234) further includes a transmission shaft (650). One radial end of the driving member (640) is rotatably connected to the rear connecting rod (630), and the other radial end is provided with a transmission shaft (650). The axial direction of the transmission shaft (650) is parallel to the direction d3, and one axial end of it is used to be connected to the moving contact mechanism of the switching device. The device housing (100) includes a housing base (110) and a housing cover (120) that are assembled together along direction d3. The housing base (110) includes a housing body (111) and a housing side cover (112) that are detachably assembled together along direction d1. The operating mechanism (1234) is disposed in the space enclosed by the housing body (111) and the housing cover (120). The first trip unit (910) and the second trip unit (920) are disposed in the space enclosed by the housing body (111) and the housing side cover (112).

Images