Switching device and circuit breaker with automatic and manual switching function of circuit breaker

Abstract

This utility model provides a switching device and circuit breaker with automatic and manual opening and closing functions, relating to the field of circuit breaker technology. It includes: an automatic control mechanism housed inside the casing, its output end connected to the opening and closing drive mechanism, used to drive the end of the opening and closing drive mechanism connected to the circuit breaker body to move, realizing automatic opening and closing operations of the circuit breaker; a manual control mechanism, the upper end of which is located outside the casing, and the lower end connected to the opening and closing drive mechanism, used by an operator to operate the upper end of the manual control mechanism to drive the end of the opening and closing drive mechanism connected to the circuit breaker body to move, realizing manual opening and closing operations of the circuit breaker; and a manual-automatic switching mechanism slidably mounted on the casing, the upper end of which is located outside the casing, allowing the lower end to engage or disengage the manual control mechanism by sliding the upper end of the manual-automatic switching mechanism, thus enabling or disabling the manual control mechanism. This solution can realize both automatic and manual opening and closing control of the circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a switching device and a circuit breaker with automatic and manual opening and closing functions. Background Technology

[0002] Circuit breakers are crucial circuit protection devices widely used in power systems, industrial power distribution, and civil electrical facilities. Their core function is to automatically, quickly, and reliably interrupt fault current in the event of overload, short circuit, ground fault, or other abnormal conditions, protecting downstream electrical equipment, lines, and personnel from damage. Under normal circumstances, circuit breakers also perform the task of closing circuits, ensuring the normal flow of electricity. Therefore, opening and closing are the two most basic and important operational actions of circuit breakers.

[0003] Normally, circuit breakers are automatically controlled via commands and signals to perform opening and closing operations. However, in some scenarios, manual operation of circuit breakers is necessary. For example, during equipment maintenance, repair, or replacement, the circuit breaker must be manually and reliably opened and locked in the open position to ensure the absolute safety of operators—a core safety requirement that automatic control cannot replace. Furthermore, when automatic control systems such as PLCs, communication networks, and power supplies malfunction, experience power outages, or suffer software errors, manual operation is the last resort to ensure the circuit breaker can be controlled. In emergencies such as fires or abnormal smoke from equipment, on-site personnel must immediately disconnect the power supply without waiting for or relying on potentially malfunctioning automatic systems. Finally, during equipment installation, commissioning, functional testing, or periodic maintenance, frequent local manual operation is required to verify mechanical and electrical performance.

[0004] Therefore, there is an urgent need to provide a solution that can control the switching between automatic and manual opening and closing of circuit breakers. Utility Model Content

[0005] In view of this, and to address the above shortcomings, it is necessary to propose a switching device and circuit breaker with automatic and manual opening and closing functions, which can realize automatic opening and closing control and manual opening and closing control of the circuit breaker.

[0006] In a first aspect, this utility model provides a switching device with automatic and manual opening and closing functions for a circuit breaker, comprising: a housing, a manual-automatic switching mechanism, a manual control mechanism, an automatic control mechanism, and an opening and closing drive mechanism; the automatic control mechanism is disposed inside the housing, and its output end is connected to the opening and closing drive mechanism, used to drive the end of the opening and closing drive mechanism connected to the circuit breaker body to move, thereby realizing the automatic opening and closing operation of the circuit breaker; the upper end of the manual control mechanism is located outside the housing, and the lower end is connected to the opening and closing drive mechanism, used by the operator to operate the upper end of the manual control mechanism to drive the end of the opening and closing drive mechanism connected to the circuit breaker body to move, thereby realizing the manual opening and closing operation of the circuit breaker; the manual-automatic switching mechanism is slidably installed on the housing, with its upper end located outside the housing, and can drive the lower end to engage or disengage the manual control mechanism by sliding the upper end of the manual-automatic switching mechanism, thereby enabling or disabling the manual control mechanism.

[0007] Preferably, the automatic control mechanism includes: a drive motor, a partition, and a turntable; the partition is disposed inside the housing, the drive motor is fixedly installed above the partition, the output end of the drive motor passes through the partition and is fixedly connected to the upper surface of the turntable located below the partition, and the lower surface of the turntable is connected to the circuit breaker drive mechanism, so that the drive motor drives the turntable to rotate, thereby driving the end of the circuit breaker drive mechanism connected to the circuit breaker body to move.

[0008] Preferably, the opening and closing drive mechanism includes: a first fixed plate, a second fixed plate, a first connecting member, a second connecting member, and a fixed rod; both ends of the fixed rod are fixed inside the housing, the first fixed plate and the second fixed plate are respectively fixed on the upper and lower sides of the fixed rod, the lower end of the first fixed plate is fixedly connected to one end of the first connecting member, the other end of the first connecting member is fixedly connected to the upper surface of the second fixed plate, the lower surface of the second fixed plate is connected to one end of the second connecting member, and the other end of the second connecting member is used to connect to the opening and closing contact handle of the circuit breaker body; the upper surface of the first fixed plate is provided with a first sliding groove, one end of the first sliding block is fixedly installed at the bottom of the turntable, and the other end is slidably disposed inside the first sliding groove, so that when the turntable is driven to rotate by the drive motor, the second connecting member moves, thereby realizing the automatic opening and closing operation of the circuit breaker; the second fixed plate is provided with a second sliding groove, one end of the second sliding block is slidably disposed inside the second sliding groove, and the other end is fixedly connected to one end of the first transmission rod, and the other end of the first transmission rod is fixedly connected to the lower end of the manual control mechanism.

[0009] Preferably, the manual control mechanism includes: a drive handle, an upper cylinder, a lower cylinder, an upper locking member, a lower locking member, and a second transmission rod; the upper cylinder is fixedly installed on the housing, with a slot at its upper end located outside the housing, allowing the upper cylinder to rotate by inserting the drive handle into the slot; the upper locking member is slidably installed vertically inside the lower end of the upper cylinder, the lower end of the lower cylinder is fixedly installed on the upper surface of the partition, and the lower locking member is rotatably installed inside its upper end; the manual / automatic switching mechanism can drive the upper locking member to slide vertically within the upper cylinder, so that the lower surface of the upper locking member and the upper surface of the lower locking member are locked or unlocked; the lower end of the lower locking member is fixedly connected to one end of the second transmission rod, and the other end of the second transmission rod is fixedly connected to the first transmission rod, so that the circuit breaker body can be opened or closed by rotating the drive handle when the upper and lower locking members are locked.

[0010] Preferably, the lower locking component includes a first fixing member, the upper side of which is rotatably mounted on the inner surface of the lower cylinder. The upper surface of the first fixing member is provided with a plurality of first protrusions at intervals, and the lower surface is fixedly connected to one end of the second transmission rod. The upper locking component includes an inner cylinder, a spring, a cone, and a second fixing member. The inner cylinder is disposed inside the upper cylinder, the spring is disposed inside the inner cylinder, and one end is fixedly connected to the upper surface of the inner cylinder, and the other end is fixedly connected to the upper end of the cone. The lower end of the cone is fixedly connected to the upper surface of the second fixing member, and the lower surface of the second fixing member is provided with a plurality of second protrusions at intervals. The inner surface of the upper cylinder is provided with a third sliding groove, and the side of the cone is fixedly provided with a third slider. The outer side of the third slider passes through the through groove on the inner cylinder and is movably connected to the third sliding groove, so that the spring pushes the cone to slide downward, so that each second protrusion is inserted into the interval between each first protrusion to achieve locking.

[0011] Preferably, the manual / automatic switching mechanism includes: a fourth slider and an L-shaped connecting rod; the upper surface of the housing is provided with a fourth sliding groove, and the fourth slider is slidably disposed in the fourth sliding groove; the lower surface of the fourth slider is fixedly connected to one end of the L-shaped connecting rod disposed inside the housing, and the other end is configured as a conical structure and faces the conical surface of the conical body, so that when the fourth slider slides in the direction of the manual control mechanism, the conical end of the connecting rod applies force to the conical surface of the conical body, forcing the conical body to slide upward, and the upper locking member and the lower locking member separate.

[0012] Preferably, the lower surface of the fourth slider is provided with a groove on the side near the drive handle, and a third protrusion is provided in the fourth groove on the side near the drive handle, so that when the fourth slider slides to the manual control side, the third protrusion engages with the groove.

[0013] Secondly, this utility model also provides a circuit breaker, including a circuit breaker body and a switching device with automatic and manual opening and closing functions as described in any of the first aspects. The switching device with automatic and manual opening and closing functions is installed on the circuit breaker body, and its opening and closing drive mechanism is connected to the opening and closing handle of the circuit breaker body, so as to control the movement of the opening and closing drive mechanism in a manual or automatic manner, thereby driving the opening and closing handle of the circuit breaker to move and realize the opening and closing operation.

[0014] As can be seen from the above technical solution, the switching device with automatic and manual circuit breaker opening and closing functions provided by this utility model includes a housing, a manual / automatic switching mechanism, a manual control mechanism, an automatic control mechanism, and a circuit breaker opening and closing drive mechanism. The automatic control mechanism is located inside the housing, and its output end is connected to the circuit breaker opening and closing drive mechanism, enabling the movement of one end of the circuit breaker opening and closing drive mechanism connected to the circuit breaker body's opening and closing handle, thereby realizing the automatic opening and closing operation of the circuit breaker. The upper end of the manual control mechanism is located inside the housing, and the lower end is connected to the circuit breaker opening and closing drive mechanism, allowing the operator to operate the upper end of the manual control mechanism to move the one end of the circuit breaker opening and closing drive mechanism connected to the circuit breaker body's opening and closing handle, thereby realizing the manual opening and closing operation of the circuit breaker. In addition, the manual / automatic switching mechanism is slidably mounted on the housing, with its upper end located outside the housing, allowing the operator to operate it. By sliding the upper end of the manual / automatic switching mechanism, the lower end is engaged or disengaged from the manual control mechanism, thus enabling or disabling the manual control mechanism. Therefore, under normal circumstances, the operator slides the manual-automatic switching mechanism to the side where the manual control mechanism is disabled, and the circuit breaker is controlled by the automatic control mechanism for opening and closing. When manual control of the circuit breaker is required, the operator slides the manual-automatic switching mechanism to the side where the manual control mechanism is active, and the circuit breaker is controlled by the manual control mechanism for opening and closing. The operator can then manually open and close the circuit breaker by operating the manual control mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a switching device with automatic and manual circuit breaker opening and closing functions provided for an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of a manual / automatic switching mechanism provided for an embodiment of the present utility model.

[0017] Figure 3 This is a top view of a switching device with automatic and manual circuit breaker opening and closing functions provided in an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of a switching device housing with automatic and manual circuit breaker opening and closing functions, provided for an embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of a manual control mechanism provided for an embodiment of the present utility model.

[0020] Figure 6 This is a schematic diagram of a locking assembly provided for an embodiment of the present utility model.

[0021] Figure 7 This is a cross-sectional view of a locking assembly provided in an embodiment of the present utility model.

[0022] Figure 8 This is a schematic diagram of a lower locking member provided for an embodiment of the present utility model.

[0023] Figure 9 This is a schematic diagram of an automatic control mechanism provided for an embodiment of the present utility model.

[0024] Figure 10 This is a front view of a gate opening and closing drive mechanism provided in an embodiment of the present utility model.

[0025] Figure 11 This is a schematic diagram of a gate opening and closing drive mechanism from one perspective, provided for an embodiment of the present utility model.

[0026] In the diagram: 10 housing, 20 manual / automatic switching mechanism, 21 fourth slider, 22 L-shaped connecting rod, 23 fourth slide groove, 24 groove, 25 third protrusion, 30 manual control mechanism, 31 drive handle, 32 upper cylinder, 33 lower cylinder, 34 upper locking member, 341 inner cylinder, 342 spring, 343 cone, 344 second fixing member, 345 second protrusion, 346 third slide groove, 347 third slider, 35 lower locking member, 351 first fixing member, 352 first protrusion, 36 second transmission rod, 37 slot, 40 automatic control mechanism, 41 drive motor, 42 partition plate, 43 turntable, 50 opening / closing drive mechanism, 51 first fixing plate, 52 second fixing plate, 53 first connecting member, 54 second connecting member, 55 first slide groove, 56 first slider, 57 second slide groove, 58 second slider, 59 first transmission rod, 510 fixing rod. Detailed Implementation

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Please see Figure 1-11This utility model provides a switching device with automatic and manual circuit breaker opening and closing functions, including: a housing 10, a manual / automatic switching mechanism 20, a manual control mechanism 30, an automatic control mechanism 40, and an opening and closing drive mechanism 50; the automatic control mechanism 40 is disposed inside the housing 10, and its output end is connected to the opening and closing drive mechanism 50, used to drive the end of the opening and closing drive mechanism 50 connected to the circuit breaker body to move, thereby realizing the automatic opening and closing operation of the circuit breaker; the upper end of the manual control mechanism 30 is located outside the housing 10, and the lower end is connected to the opening and closing drive mechanism 50, used by the operator to operate the upper end of the manual control mechanism 30 to drive the end of the opening and closing drive mechanism 50 connected to the circuit breaker body to move, thereby realizing the manual opening and closing operation of the circuit breaker; the manual / automatic switching mechanism 20 is slidably installed on the housing 10, with its upper end located outside the housing 10, and can drive the lower end to engage or disengage the manual control mechanism 30 by sliding the upper end of the manual / automatic switching mechanism 20, thereby making the manual control mechanism 30 active or inactive.

[0029] In one embodiment, the automatic control mechanism 40 may include: a drive motor 41, a partition 42, and a turntable 43; the partition 42 is disposed inside the housing 10, the drive motor 41 is fixedly installed above the partition 42, the output end of the drive motor 41 passes through the partition 42 and is fixedly connected to the upper surface of the turntable 43 located below the partition 42, and the lower surface of the turntable 43 is connected to the circuit breaker drive mechanism 50, for the drive motor 41 to drive the turntable 43 to rotate, thereby driving the end of the circuit breaker drive mechanism 50 connected to the circuit breaker body to move.

[0030] In this embodiment, when the circuit breaker is controlled by the automatic control mechanism 40, the drive motor 41 works by receiving control signals or instructions, drives the turntable 43 to rotate, and then the turntable 43 drives the end of the opening and closing drive mechanism 50 connected to the circuit breaker body handle to move, that is, to move the circuit breaker handle, so as to realize the automatic opening and closing operation of the circuit breaker.

[0031] In one embodiment, the opening and closing drive mechanism 50 may include: a first fixing plate 51, a second fixing plate 52, a first connecting member 53, a second connecting member 54, and a fixing rod 510; at least one fixing rod 510 has both ends fixed inside the housing 10, the first fixing plate 51 and the second fixing plate 52 are respectively fixed to the upper and lower sides of the fixing rod 510, the lower end of the first fixing plate 51 is fixedly connected to one end of the first connecting member 53, the other end of the first connecting member 53 is fixedly connected to the upper surface of the second fixing plate 52, the lower surface of the second fixing plate 52 is connected to one end of the second connecting member 54, and the other end of the second connecting member 54 is used for... The circuit breaker body is connected to the opening and closing contact handle; the upper surface of the first fixed plate 51 is provided with a first sliding groove 55, one end of the first slider 56 is fixedly installed at the bottom of the turntable 43, and the other end is slidably disposed inside the first sliding groove 55, so that when the turntable 43 is driven to rotate by the drive motor 41, the second connecting member 54 is moved, thereby realizing the automatic opening and closing operation of the circuit breaker; the second fixed plate 52 is provided with a second sliding groove 57, one end of the second slider 58 is slidably disposed inside the second sliding groove 57, and the other end is fixedly connected to one end of the first transmission rod 59, and the other end of the first transmission rod 59 is fixedly connected to the lower end of the manual control mechanism 30.

[0032] In this embodiment, the first fixed plate 51 of the opening and closing drive mechanism 50 is connected to the turntable 43 via the first sliding groove 55 and the first slider 56, so that when the drive motor 41 drives the turntable 43 to rotate, it can drive the opening and closing drive mechanism 50 to move, thereby actuating the circuit breaker handle and realizing automatic opening and closing operations. The second fixed plate 52 of the opening and closing drive mechanism 50 is connected to the lower end of the manual control mechanism 30 via the second sliding groove 57 and the second slider 58, so that by operating the manual control mechanism 30, the opening and closing drive mechanism 50 can be driven to move, thereby actuating the circuit breaker handle and realizing manual opening and closing operations.

[0033] In one embodiment, the manual control mechanism 30 may include: a drive handle 31, an upper cylinder 32, a lower cylinder 33, an upper locking member 34, a lower locking member 35, and a second transmission rod 36; the upper cylinder 32 is fixedly installed on the housing 10, and a slot 37 is provided at its upper end and located outside the housing 10, so that the upper cylinder 32 can be rotated by inserting the drive handle 31 into the slot 37 and rotating it; the upper locking member 34 is slidably provided in the lower end of the upper cylinder 32 in the vertical direction, the lower end of the lower cylinder 33 is fixedly installed on the upper surface of the partition 42, and the lower locking member 35 is rotatably installed in the upper end, for example, by means of gears. The manual / automatic switching mechanism 20 can drive the upper locking member 34 to slide vertically within the upper cylinder 32, so that the lower surface of the upper locking member 34 and the upper surface of the lower locking member 35 are locked or unlocked; the lower end of the lower locking member 35 is fixedly connected to one end of the second transmission rod 36, and the other end of the second transmission rod 36 is fixedly connected to the first transmission rod 59, so that when the upper locking member 34 and the lower locking member 35 are locked, the circuit breaker body can be opened and closed by rotating the drive handle 31.

[0034] Furthermore, the lower locking member 35 may include a first fixing member 351, the upper side of which is rotatably mounted on the inner surface of the lower cylinder 33. The upper surface of the first fixing member 351 is provided with a plurality of first protrusions 352 spaced apart, and its lower surface is fixedly connected to one end of the second transmission rod 36. The upper locking member 34 may include: an inner cylinder 341, a spring 342, a conical body 343, and a second fixing member 344. The inner cylinder 341 is disposed inside the upper cylinder 32, and the spring 342 is disposed inside the inner cylinder 341, with one end fixedly connected to the upper surface of the inner cylinder 341 and the other end fixedly connected to... The upper end of the cone 343 is fixedly connected, and the lower end of the cone 343 is fixedly connected to the upper surface of the second fixing member 344. The lower surface of the second fixing member 344 is provided with a plurality of second protrusions 345 at intervals. The inner surface of the upper cylinder 32 is provided with a third sliding groove 346, and the side of the cone 343 is fixedly provided with a third slider 347. The outer side of the third slider 347 passes through the through groove on the inner cylinder 341 and is movably connected to the third sliding groove 346 so that the cone 343 is pushed downward by the spring 342, so that each second protrusion 345 is inserted into the interval between each first protrusion 352 to achieve locking.

[0035] In this embodiment, when the manual / automatic switching mechanism 20 is switched to manual control, the tension of the spring 342 pushes the conical body 343 downward, causing the second fixing member 344 of the upper locking member 34 to move downward. This causes the second protrusion 345 on the lower surface of the second fixing member 344 to insert into the gaps between the first protrusions 352, achieving locking. Thus, by inserting the drive handle 31 into the slot 37 and rotating it, the upper cylinder 32 can be rotated, which in turn drives the second fixing member 344 to rotate. Since the second protrusion 345 on the second fixing member 344 and the first protrusion 352 on the first fixing member 351 are engaged horizontally, the first fixing member 351 can be rotated. The rotation of the first fixing member 351 drives the second transmission rod 36 to rotate, thereby causing the opening and closing drive mechanism 50 to move, realizing manual opening and closing operations.

[0036] Of course, in one embodiment, the upper cylinder 32 part can also be provided with a lock cylinder structure, that is, the manual opening and closing operation can only be achieved by a special key.

[0037] In one embodiment, the manual / automatic switching mechanism 20 may include: a fourth slider 21 and an L-shaped connecting rod 22; the upper surface of the housing 10 is provided with a fourth sliding groove 23, and the fourth slider 21 is slidably disposed in the fourth sliding groove 23; the lower surface of the fourth slider 21 is fixedly connected to one end of the L-shaped connecting rod 22 disposed inside the housing 10, and the other end is configured as a conical structure and faces the conical surface of the conical body 343, so that when the fourth slider 21 slides in the direction of the manual control mechanism 30, the conical end of the connecting rod applies force to the conical surface of the conical body 343, forcing the conical body 343 to slide upward, and the upper locking member 34 and the lower locking member 35 separate.

[0038] In this embodiment, a fourth sliding groove 23 can be provided on the upper surface of the housing 10, and a fourth slider 21 can slide in the fourth sliding groove 23. The lower end of the fourth slider 21 is connected to one end of the L-shaped connecting rod 22, and the other end is set as a conical structure facing the conical surface of the conical body 343. Thus, when the operator slides the fourth slider 21 toward one end of the manual operating mechanism, one end of the conical structure of the L-shaped connecting rod 22 can apply force to the side of the conical body 343, thereby forcing the spring 342 to compress. As the spring 342 is compressed, it can drive the conical body 343 and the second fixing member 344 to move upward, thereby realizing the separation of the upper locking member 34 and the lower locking member 35. At this time, the manual control mechanism 30 is ineffective, and the circuit breaker can be controlled by the automatic control mechanism 40. When the operator slides the fourth slider 21 away from the manual control mechanism 30, the tapered structure of the L-shaped connecting rod 22 no longer applies force to the tapered surface of the tapered body 343. The tension generated by the spring 342 due to its recovery pushes the tapered body 343 downwards, causing the second protrusion 345 of the upper locking member 34 to insert into the intervals between the first protrusions 352 of the lower locking member 35, thus locking the upper locking member 34 and the lower locking member 35 together. At this time, the manual control mechanism 30 becomes active, allowing control of the circuit breaker's opening and closing.

[0039] Furthermore, to ensure that the L-shaped connecting rod 22 is not squeezed out by the tension of the spring 342 after the fourth slider 21 slides to the side of the manual control mechanism 30 and the upper locking member 34 and lower locking member 35 separate, and to prevent the upper locking member 34 and lower locking member 35 from automatically locking again, this design also considers providing a groove 24 on the lower surface of the fourth slider 21 near the drive handle 31, and a third protrusion 25 in the fourth slide groove 23 near the drive handle 31, for engaging with the groove 24 when the fourth slider 21 slides to the manual control side. Thus, the engagement of the third protrusion 25 with the groove 24 prevents the tension of the spring 342 from squeezing out the L-shaped connecting rod 22. When the operator slides the fourth slider 21 away from the manual control mechanism 30, the applied force can completely overcome the resistance of the third protrusion 25 and the groove, thus achieving smooth sliding.

[0040] In addition, this solution also provides a circuit breaker, including a circuit breaker body and a switching device with automatic and manual opening and closing functions as described in any of the above embodiments. The switching device with automatic and manual opening and closing functions is installed on the circuit breaker body, and its opening and closing drive mechanism 50 is connected to the opening and closing handle of the circuit breaker body, so as to control the movement of the opening and closing drive mechanism 50 by manual or automatic means, thereby driving the opening and closing handle of the circuit breaker to move and realize the opening and closing operation.

[0041] The switching device and circuit breaker with automatic and manual opening and closing functions provided in this solution, when manual opening and closing operations are required, the operator slides the fourth slider 21 on the manual / automatic switching mechanism 20 to the left, locking the upper locking member 34 and the lower locking member 35 of the manual control mechanism 30. At this time, the manual control mechanism 30 is activated, and the slot 37 of the manual control mechanism 30 is exposed. The operator inserts the drive handle 31 into the slot 37 and rotates it, driving the opening and closing drive mechanism 50 to move, thereby actuating the circuit breaker handle to achieve manual closing or opening operations. After the manual operation is completed, the operator pulls out the drive handle 31 and slides the fourth slider 21 to the right, separating the upper locking member 34 and the lower locking member 35 through the L-shaped connecting rod 22. At this time, the manual control mechanism 30 is activated, and the slot 37 is covered. At this time, the drive motor 41 of the automatic control mechanism 40 can be driven to work through signals or control commands, thereby realizing the automatic opening and closing operations of the circuit breaker.

[0042] The modules or units in the device of this utility model embodiment can be merged, divided, and deleted according to actual needs. The above-disclosed embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of this utility model. Those skilled in the art can understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this utility model still fall within the scope of this utility model.

Claims

1. A switching device with automatic and manual opening and closing functions of a circuit breaker, characterized in that, include: The circuit breaker comprises a housing, a manual / automatic switching mechanism, a manual control mechanism, an automatic control mechanism, and a circuit breaker opening / closing drive mechanism. The automatic control mechanism is located inside the housing, with its output end connected to the circuit breaker opening / closing drive mechanism. It drives the end of the circuit breaker opening / closing drive mechanism connected to the circuit breaker body to move, thereby achieving automatic opening / closing operation of the circuit breaker. The upper end of the manual control mechanism is located outside the housing, and the lower end is connected to the circuit breaker opening / closing drive mechanism. It is used by operators to operate the upper end of the manual control mechanism to drive the end of the circuit breaker opening / closing drive mechanism connected to the circuit breaker body to move, thereby achieving manual opening / closing operation of the circuit breaker. The manual / automatic switching mechanism is slidably mounted on the housing, with its upper end located outside the housing. By sliding the upper end of the manual / automatic switching mechanism, the lower end can be engaged or disengaged from the manual control mechanism, thereby enabling or disabling the manual control mechanism.

2. The switching device with automatic and manual opening and closing functions of the circuit breaker according to claim 1, characterized in that, The automatic control mechanism includes a drive motor, a partition, and a turntable. The partition is located inside the housing. The drive motor is fixedly installed above the partition. The output end of the drive motor passes through the partition and is fixedly connected to the upper surface of the turntable located below the partition. The lower surface of the turntable is connected to the circuit breaker drive mechanism. The turntable is rotated by the drive motor, which in turn drives the end of the circuit breaker drive mechanism connected to the circuit breaker body to move.

3. The switching device with automatic and manual opening and closing functions of the circuit breaker according to claim 2, characterized in that, The opening and closing drive mechanism includes: a first fixed plate, a second fixed plate, a first connecting member, a second connecting member, and a fixed rod; both ends of the fixed rod are fixed inside the housing, and the first fixed plate and the second fixed plate are respectively fixed on the upper and lower sides of the fixed rod; the lower end of the first fixed plate is fixedly connected to one end of the first connecting member, the other end of the first connecting member is fixedly connected to the upper surface of the second fixed plate, the lower surface of the second fixed plate is connected to one end of the second connecting member, and the other end of the second connecting member is used to connect to the opening and closing contact handle of the circuit breaker body; the upper surface of the first fixed plate is provided with a first sliding groove, one end of the first sliding block is fixedly installed at the bottom of the turntable, and the other end is slidably disposed inside the first sliding groove, so that when the turntable is driven to rotate by the drive motor, the second connecting member moves, thereby realizing the automatic opening and closing operation of the circuit breaker; the second fixed plate is provided with a second sliding groove, one end of the second sliding block is slidably disposed inside the second sliding groove, and the other end is fixedly connected to one end of the first transmission rod, and the other end of the first transmission rod is fixedly connected to the lower end of the manual control mechanism.

4. The switching device with automatic and manual opening and closing functions of the circuit breaker according to claim 3, characterized in that, The manual control mechanism includes: a drive handle, an upper cylinder, a lower cylinder, an upper locking member, a lower locking member, and a second transmission rod. The upper cylinder is fixedly installed on the housing, with a slot at its upper end located outside the housing, allowing the upper cylinder to rotate by inserting the drive handle into the slot. The upper locking member is slidably installed vertically inside the lower end of the upper cylinder, and the lower end of the lower cylinder is fixedly installed on the upper surface of the partition, with the lower locking member rotatably installed inside its upper end. The manual / automatic switching mechanism can drive the upper locking member to slide vertically within the upper cylinder, so that the lower surface of the upper locking member and the upper surface of the lower locking member are locked or unlocked. The lower end of the lower locking member is fixedly connected to one end of the second transmission rod, and the other end of the second transmission rod is fixedly connected to the first transmission rod, so that the circuit breaker body can be opened or closed by rotating the drive handle when the upper and lower locking members are locked.

5. The switching device with automatic and manual opening and closing functions of the circuit breaker according to claim 4, characterized in that, The lower locking component includes a first fixing member, the upper side of which is rotatably mounted on the inner surface of the lower cylinder. The upper surface of the first fixing member is provided with a plurality of first protrusions at intervals, and the lower surface is fixedly connected to one end of the second transmission rod. The upper locking component includes an inner cylinder, a spring, a cone, and a second fixing member. The inner cylinder is disposed inside the upper cylinder, and the spring is disposed inside the inner cylinder, with one end fixedly connected to the upper surface of the inner cylinder and the other end fixedly connected to the upper end of the cone. The lower end of the cone is fixedly connected to the upper surface of the second fixing member, and the lower surface of the second fixing member is provided with a plurality of second protrusions at intervals. The inner surface of the upper cylinder is provided with a third sliding groove, and the side of the cone is fixedly provided with a third slider. The outer side of the third slider passes through the through groove on the inner cylinder and is movably connected to the third sliding groove, so that the spring pushes the cone to slide downward, so that each second protrusion is inserted into the interval between each first protrusion to achieve locking.

6. The switching device with automatic and manual opening and closing functions of the circuit breaker according to claim 5, characterized in that, The manual / automatic switching mechanism includes a fourth slider and an L-shaped connecting rod; the upper surface of the housing is provided with a fourth sliding groove, and the fourth slider is slidably disposed in the fourth sliding groove; the lower surface of the fourth slider is fixedly connected to one end of the L-shaped connecting rod disposed inside the housing, and the other end is configured as a conical structure and faces the conical surface of the conical body, so that when the fourth slider slides in the direction of the manual control mechanism, the conical end of the connecting rod applies force to the conical surface of the conical body, forcing the conical body to slide upward, and the upper locking part and the lower locking part separate.

7. The switching device with automatic and manual opening and closing functions of the circuit breaker according to claim 6, characterized in that, The lower surface of the fourth slider is provided with a groove on the side near the drive handle, and a third protrusion is provided in the fourth groove on the side near the drive handle, so that when the fourth slider slides to the manual control side, the third protrusion engages with the groove.

8. A circuit breaker, characterized in that, The circuit breaker includes a circuit breaker body and a switching device with automatic and manual circuit breaker opening and closing functions as described in any one of claims 1-7. The switching device with automatic and manual circuit breaker opening and closing functions is installed on the circuit breaker body, and its opening and closing drive mechanism is connected to the opening and closing handle of the circuit breaker body to control the movement of the opening and closing drive mechanism in a manual or automatic manner, thereby driving the opening and closing handle of the circuit breaker to move and realize the opening and closing operation.

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