Operating mechanism for rotary switch

Abstract

The application relates to an operating mechanism for a rotary switch, which comprises a frame, an operating shaft, an output shaft, a supporting frame, a jump buckle, a lock buckle plate, an upper pull spring, a lower pull spring and a connecting rod assembly; the operating shaft and the supporting frame are rotationally arranged on the frame, the operating shaft drives the supporting frame to rotate through a transmission gear; the jump buckle is rotationally arranged on the frame, the lock buckle plate is suitable for limiting the jump buckle in a relocking position, the upper end of the connecting rod assembly is connected with the jump buckle, the lower end is provided with the output shaft, and the upper end of the supporting frame is provided with the upper pull spring. The lock buckle plate is driven to move, the jump buckle is tripped, and the operating mechanism in the closed state can be switched to the open state.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more specifically to an operating mechanism for a rotary switch. Background Technology

[0002] The operating mechanism is used to control the rotary switch to perform opening and closing operations. To ensure that the operating mechanism can safely control the rotary switch, the operating mechanism needs to be structurally stable, thereby stably controlling the operation of the rotary switch.

[0003] The existing operating mechanism has the following problems: When the operating mechanism is in the closed position and controls the rotary switch to open, if the rotary switch malfunctions and requires emergency power disconnection, the operating mechanism cannot open the switch in time, thus affecting the safety of the entire power supply system. Secondly, the existing operating mechanism has a complex structure. When the operating shaft outputs power, it needs to rely on a large number of connecting rods for power transmission. The large number of connecting rods results in a complex structure, unreliable stability, and high manufacturing costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an operating mechanism for rotary switches, which solves the problems of complex structure of existing operating mechanisms and failure to open the switch in time when the mechanism is closed.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] An operating mechanism for a rotary switch is provided, comprising:

[0007] Frame, operating shaft, output shaft, support frame, jump fastener, locking plate, upper tension spring, lower tension spring, and linkage assembly;

[0008] The operating shaft and the support frame are rotatably mounted on the frame, and the operating shaft drives the support frame to rotate via a transmission gear.

[0009] The jump fastener is rotatably mounted on the frame. The jump fastener is adapted to rotate between the re-fastening position and the release position. The locking plate is adapted to restrict the jump fastener in the re-fastening position. The pull spring is adapted to rotate the released jump fastener to the release position.

[0010] The upper end of the linkage assembly is connected to a jump fastener, and the lower end is equipped with an output shaft. The upper end of the support frame is provided with a tension spring to the linkage assembly.

[0011] The operating shaft and support frame are adapted to reciprocate between the closed position, the open re-clamping position, and the open tripping position, and the output shaft is adapted to reciprocate between the open position and the closed position;

[0012] Action 1: When the output shaft is in the open position, the operating shaft and support frame are in the open and re-engaged position, and the trip fastener is in the re-engaged position, the operating shaft moves the output shaft to the closed position via the transmission gear, support frame, upper tension spring and connecting rod assembly.

[0013] Action 2: When the output shaft, operating shaft, and support frame are in the closed position and the trip fastener is in the re-clamping position, an external force triggers the trip fastener to disengage and rotate to the disengagement position. The upper tension spring drives the linkage assembly to move and moves the output shaft to the open position, while the operating shaft and support frame rotate to the open disengagement position.

[0014] Action 3: When the operating shaft and support frame are in the open trip position and the trip fastener is in the trip position, the operating shaft drives the support frame to rotate from the open trip position to the closed position via the transmission gear, and the support frame pushes the trip fastener to rotate to the re-tether position;

[0015] Action 4: When the output shaft, operating shaft, and support frame are in the closed position and the trip fastener is in the re-clamping position, the operating shaft moves the output shaft to the open position via the transmission gear, support frame, upper tension spring, and connecting rod assembly.

[0016] Furthermore, the support frame includes a rack portion, a rotating support portion, a baffle portion, and a tension spring connecting portion;

[0017] The support frame meshes with the transmission gear via a rack section;

[0018] The support frame forms a rotational fit with the machine frame via a rotating support part;

[0019] The support frame abuts against the jump fastener via the baffle portion to push the jump fastener to rotate;

[0020] The support frame is connected to the upper tension spring via a tension spring connection part.

[0021] Furthermore, the jump fastener includes a fastening part, a transition part, a connecting part, an abutting part, and a tension spring connecting part two;

[0022] The jump fastener is engaged with the locking plate via the fastening part, so that the jump fastener is kept in the re-fastening position;

[0023] The jump fastener is rotatably connected to the frame via an adapter;

[0024] The jump fastener is rotatably connected to the connecting rod assembly via a connecting part;

[0025] The jump fastener is connected to the lower pull spring via the second tension spring connection part;

[0026] The jump fastener abuts against the baffle of the support frame via its abutting part, so that the jump fastener is pushed to rotate by the support frame.

[0027] Furthermore, the linkage assembly includes

[0028] The first link includes a pair of side rods and a connecting shaft. The lower ends of the side rods are fixedly connected to both ends of the connecting shaft, and the upper ends of the side rods are rotatably connected to the jump fastener via a pin. The connecting shaft is connected to the lower end of the upper tension spring.

[0029] The second link has its upper end rotatably connected to the connecting shaft and its lower end rotatably connected to the third link;

[0030] The third link is rotatably connected at one end to the second link and at the other end to the output shaft. The third link is sleeved on the operating shaft and rotates around the operating shaft.

[0031] Furthermore, the rack includes

[0032] A pair of side plates and several connecting columns, with the two side plates located at both ends of each connecting column and fixedly connected to the connecting columns; the side plates have protrusions for cooperating with the support frame.

[0033] Furthermore, an electromagnet is installed on the frame. When the electromagnet detects a malfunction in the rotary switch, it is adapted to drive the locking plate to rotate, thereby controlling the release of the trip fastener.

[0034] The beneficial effects of this invention are:

[0035] The operating mechanism of the present invention allows the operating shaft to directly drive the support frame to rotate for opening and closing the brake via a transmission gear, resulting in more direct power transmission. When the support frame rotates, it drives the linkage assembly of the three-bar structure to move by stretching the upper tension spring, thereby causing the linkage assembly to drive the output shaft to move for opening and closing the brake.

[0036] By driving the locking plate to actuate, the trip fastener is disengaged. With the trip fastener disengaged, the operating mechanism that is in the closed state can be switched to the open state.

[0037] During the counterclockwise reset of the support frame to the open and re-engaged position, the support frame can push the trip fastener. As the support frame resets to the open and re-engaged position, the trip fastener also resets to the re-engaged position. Attached Figure Description

[0038] The invention will be further described below with reference to the accompanying drawings.

[0039] Figure 1 This is a schematic diagram of the operating mechanism for the rotary switch of the present invention;

[0040] Figure 2 This is a schematic diagram of the support frame;

[0041] Figure 3 This is a diagram of a jump fastener;

[0042] Figure 4 This is a schematic diagram of the linkage assembly;

[0043] Figure 5 This is a schematic diagram showing the operating mechanism in the open position and the trip fastener in the re-clamping position.

[0044] Figure 6 This is a schematic diagram showing that the upper tension spring and the first connecting rod are in a straight line when the operating mechanism closes the circuit;

[0045] Figure 7 This is a schematic diagram showing the operating mechanism in the closed position and the trip fastener in the re-clamping position.

[0046] Figure 8 This is a schematic diagram showing the operating shaft mechanism being in the open position due to the tripping fastener disengaging.

[0047] Figure 9 This is a schematic diagram showing the operating shaft mechanism in the open position (with support frame) due to the tripping of the tripping fastener;

[0048] Figure 10 This is a schematic diagram showing how the support frame in the operating mechanism resets to the open position and then re-engages, causing the trip fastener to reset to the re-engage position.

[0049] Figure 11 This is a schematic diagram of the operating mechanism switching from closing to opening;

[0050] Among them, 1. frame, 11. operating shaft, 12. output shaft, 13. transmission gear, 14. boss;

[0051] 2. Support frame; 21. Rack and pinion section; 22. Rotating support section; 23. Baffle section; 24. Tension spring connection section 1;

[0052] 3. Jump fastener; 31. Fastening part; 32. Adapter part; 33. Connecting part; 34. Abutting part; 35. Tension spring connecting part two;

[0053] 4. Linkage assembly; 41. First link; 411. Side link; 412. Connecting shaft; 42. Second link; 43. Third link;

[0054] 51. Upper tension spring; 52. Lower tension spring;

[0055] 6. Snap-on plate. Detailed Implementation

[0056] The present invention will now be further described with reference to specific embodiments. These accompanying drawings are simplified schematic diagrams illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0057] like Figures 1 to 11 As shown, an operating mechanism for a rotary switch includes...

[0058] Frame 1, operating shaft 11, output shaft 12, support frame 2, jump fastener 3, locking plate 6, upper tension spring 51, lower tension spring 52, and connecting rod assembly 4;

[0059] The operating shaft 11 and the support frame 2 are rotatably mounted on the frame 1, and the operating shaft 11 drives the support frame 2 to rotate via the transmission gear 13.

[0060] The jump fastener 3 is rotatably mounted on the frame 1. The jump fastener 3 is adapted to rotate between the re-fastening position and the release position. The locking plate 6 is adapted to restrict the jump fastener 3 in the re-fastening position. The pull spring 52 is adapted to rotate the released jump fastener 3 to the release position.

[0061] The upper end of the connecting rod assembly 4 is connected to the jump fastener 3, and the lower end is installed with the output shaft 12. The upper end of the support frame 2 and the connecting rod assembly 4 are provided with an upper tension spring 51.

[0062] The operating shaft 11 and the support frame 2 are adapted to reciprocate between the closed position, the open re-clamping position, and the open tripping position, and the output shaft 12 is adapted to reciprocate between the open position and the closed position;

[0063] Specifically, as an optional implementation method in this embodiment, such as Figure 2 As shown, the support frame 2 includes a rack portion 21, a rotating support portion 22, a baffle portion 23, and a tension spring connecting portion 24;

[0064] The support frame 2 meshes with the transmission gear 13 via the rack portion 21;

[0065] The support frame 2 forms a rotational fit with the frame 1 via the rotating support part 22;

[0066] The support frame 2 abuts against the jump fastener 3 via the baffle part 23, so as to push the jump fastener 3 to rotate;

[0067] The support frame 2 is connected to the tension spring 51 via the tension spring connection part 24.

[0068] Specifically, the rack part 21 has a concave arc-shaped structure. The operating shaft 11 drives the transmission gear 13 to rotate, which in turn drives the support frame 2 to reciprocate between the closed position and the open and re-engaged position.

[0069] like Figure 2 As shown, the rotating support part 22 is a semi-circular slot. The rotating support part 22 cooperates with the fixed pin on the frame 1, so that the support frame 2 rotates about the center of the rotating support part 22.

[0070] The tension of the upper tension spring 51 can press the semi-circular groove of the rotating support part 22 of the support frame 2 tightly onto the fixed pin.

[0071] Specifically, as an optional implementation method in this embodiment, such as Figure 3 As shown, the jump fastener 3 includes a fastening part 31, a transition part 32, a connecting part 33, an abutting part 34, and a tension spring connecting part 35;

[0072] The jump fastener 3 is engaged with the locking plate 6 via the fastening part 31, so that the jump fastener 3 is kept in the re-fastening position;

[0073] The jump fastener 3 is rotatably connected to the frame 1 via the adapter 32;

[0074] The jump fastener 3 is rotatably connected to the connecting rod assembly 4 via the connecting part 33;

[0075] The jump fastener 3 is connected to the pull spring 52 via the second tension spring connecting part 35;

[0076] The jump fastener 3 abuts against the baffle portion 23 of the support frame 2 via the abutting portion 34, so that the jump fastener 3 is pushed and rotated by the support frame 2.

[0077] Specifically, the adapter 32 is a pin hole, and a fixed pin is set on the frame 1. The fixed pin passes through the pin hole, so that the jump fastener 3 rotates around the adapter 32 as the axis.

[0078] Specifically, as an optional implementation method in this embodiment, such as Figure 4 As shown, the linkage assembly 4 includes

[0079] The first connecting rod 41 includes a pair of side rods 411 and a connecting shaft 412. The lower ends of the side rods 411 are fixedly connected to the two ends of the connecting shaft 412 respectively. The upper ends of the side rods 411 are rotatably connected to the connecting part 33 of the jump fastener 3 via a pin shaft. The connecting shaft 412 is connected to the lower end of the first tension spring.

[0080] The second link 42 is rotatably connected at its upper end to the connecting shaft 412 and at its lower end to the third link 43;

[0081] The third link 43 is rotatably connected at one end to the second link 42 and at the other end to the output shaft 12. The third link is sleeved on the operating shaft 11 and rotates around the operating shaft 11.

[0082] Specifically, as an optional implementation in this embodiment, the rack 1 includes

[0083] A pair of side plates and several connecting columns, with the two side plates located at both ends of each connecting column and forming a fixed connection with the connecting column.

[0084] A boss 14 is formed on the side plate. The boss 14 is used to abut against the support frame 2, so that the support frame 2 can be restricted to the open and re-locked position.

[0085] Specifically, as an optional implementation in this embodiment, an electromagnet (not shown in the figure) is provided on the frame 1. The electromagnet is adapted to drive the locking plate 6 to rotate, so as to control the release of the jump fastener 3.

[0086] The operating mechanism of this invention will be described through the following three actions:

[0087] Action 1: See Figures 5 to 7 When the output shaft 12 is in the open position, the operating shaft 11 and the support frame 2 are in the open and re-engaged position, and the trip fastener 3 is in the re-engaged position, the operating shaft 11 moves the output shaft 12 to the closed position via the transmission gear 13, the support frame 2, the upper tension spring 51 and the connecting rod assembly 4.

[0088] Specifically, such as Figure 5 As shown, the operating mechanism is in the open position, that is, the output shaft 12 is in the open position, and the trip fastener 3 is in the re-fastening position. Assume that the connection point between the upper tension spring 51 and the support frame 2 is point A, the connecting shaft 412 connected to the lower end of the upper tension spring 51 is point B, and the transition point between the upper end of the side rod 411 of the first connecting rod 41 and the trip fastener 3 is point C. That is to say, the upper tension spring 51 connects points A and B, and the direction of the tension of the upper tension spring 51 is the AB line.

[0089] Figures 5 to 11 The bold black lines in the diagram represent the state of the connecting rod assembly and the upper tension spring, formed by points A, B, and C.

[0090] At the start of the operation, i.e., when the operating mechanism switches from the open to the close position, the operating shaft 11, which is in the open re-lock position, rotates towards the close position. This directly drives the support frame 3 to rotate clockwise via the transmission gear 13. The support frame 2 then stretches the tension spring 51. Before the support frame 2 rotates, as... Figure 5 As shown in the diagram, point C is located to the right of line AB. As support frame 2 rotates clockwise, point A slowly moves clockwise until it passes through point C and coincides with line AB (the three points form a straight line). Figure 6 As shown in the diagram, as support frame 2 continues to rotate, when point C moves to the left of line AB, that is... Figure 7 As shown, the upper tension spring 51 pulls the connecting shaft 412 to open the first link 41 and the second link 42. The second link 42 pushes the third link 43 to rotate clockwise, moving the output shaft 12 on the third link 43 to the closed position.

[0091] Action 2: See Figures 8 to 10 Action two is performed based on action one, that is, when the output shaft 12, operating shaft 11, and support frame 2 are in the closed position, and the trip fastener 3 is in the re-clamping position, i.e. Figure 8 Figure 9As shown, the trip fastener 3 is triggered to trip. The trip fastener 3 rotates to the trip position under the action of the pull-down spring 52. Then the pull-up spring 51 drives the linkage assembly to move and moves the output shaft 12 to the open position, and the operating shaft 11 and the support frame 2 rotate to the open trip position.

[0092] Specifically, this action is triggered by an electromagnet to open the locking plate 6. When a power supply system malfunctions, the electromagnet causes the locking plate 6 to open, causing the trip fastener 3 to rotate to the release position under the action of the pull spring 52; for example... Figure 8 Figure 9 As shown, jump fastener 3 begins to rotate clockwise, and point C gradually moves from the left side of line AB to the right side. (See attached image) Figure 7 and Figure 8 At point C, as the trip fastener 3 rotates to the tripped position, its position shifts, causing points B and C of the linkage assembly 4 to change position along with it. The first linkage 41 is pulled upward by the upper tension spring 51, which in turn pulls the second linkage 42 upward. The second linkage 42 then rotates the output shaft 12 on the third linkage 43 to the open position, at which point the operating mechanism switches to the open position. As point B moves upward, the direction in which the upper tension spring 51 pulls the support frame 2 also changes, rotating it to the open tripped position. The support frame 2 then drives the operating shaft 11 to rotate to the open tripped position via the transmission gear 13. The rotation angle of the operating shaft 11 from the closed position to the open tripped position is relatively small, approximately 13-15°. An indicator is installed on the operating shaft 11 to indicate whether it is in the closed position, the open tripped position, or the open tripped position.

[0093] The support frame 2, which is in the tripped position, and the trip fastener 3, which is in the tripped position, abut against each other, with the baffle part of the support frame 2 and the grounding part of the trip fastener 3 touching each other.

[0094] Action 3: See Figure 10 This action is performed based on the second action. When the operating shaft 11 and the support frame 2 are in the open trip position and the trip fastener 3 is in the trip position, the operating shaft 11 drives the support frame 2 to rotate from the open trip position to the closed position via the transmission gear 13. The support frame 2 pushes the trip fastener 3 to rotate to the re-tight position.

[0095] Specifically, when the operating shaft 11 and support frame 2 are in the open trip position and the trip fastener 3 is in the trip position, the operating shaft 11 drives the support frame 2 to rotate counterclockwise via the transmission gear 13, that is, from the open trip position to the open re-trip position. Since the baffle part 23 of the support frame 2 is close to the abutting part 34 of the trip fastener 3, the support frame 2 pushes the trip fastener 3 to rotate. When the support frame 2 rotates to the open re-trip position, the trip fastener 3 also rotates to the re-trip position. The latching part 31 of the trip fastener 3 engages with the locking plate 6, restricting the trip fastener 3 to the re-trip position. At this time, the trip fastener 3 is in the re-trip position, and the operating shaft 11 and support frame 2 return to the open re-trip position, that is, return to the initial state of action one.

[0096] Action 4: See Figure 7 and Figure 11 This action is based on action two, that is, the operating mechanism directly switches from closing to opening via the operating shaft 11. Unlike action three, which is to open the circuit through the trip fastener 3.

[0097] Specifically, such as Figure 7 As shown, the output shaft 12, operating shaft 11, and support frame 2 are in the closed position, and the trip fastener 3 is in the re-clamping position. Rotating the operating shaft 11 counterclockwise causes the support frame 2 to rotate counterclockwise via the transmission gear 13. This counterclockwise rotation of the support frame 2 moves point A to the left, indicating that point C is to the left of line AB. Then, gradually, points A, B, and C are aligned on the same straight line, until point C moves to the right of line AB. Figure 11 As shown, when the support frame 2, carrying the upper tension spring 51, passes through the three-point alignment position, the upper tension spring 51 quickly drives the first connecting rod 41 to move upward, and through the third connecting rod 43, rotates the output shaft 12 to the open position, while the operating shaft 11 and the support frame 2 return to the open and re-engaged position, and the support frame 2 abuts against the boss 14, that is... Figure 1 and Figure 5 The state shown.

[0098] When the power supply system malfunctions, the operating mechanism of this invention can be driven by an electromagnet or other driving components to activate the locking plate 6, causing the trip fastener 3 to disengage. With the trip fastener 3 disengaging, the output shaft 12, which is in the closed state, can be switched to the open state, which is the working process of action two.

[0099] At the same time, during the process of the support frame 2 resetting counterclockwise to the open and re-engaged position, the support frame 2 can push the trip fastener 3 to rotate counterclockwise. As the support frame 2 resets to the open and re-engaged position, the trip fastener 3 also resets to the re-engaged position, which is the working process of action three.

[0100] When the operating mechanism switches from opening to closing, or directly from closing to opening (i.e., during the operation of actions one and four), the operating shaft 11 can be driven directly by the transmission gear 13 in conjunction with the rack on the support frame 2, directly causing the support frame 2 to rotate clockwise or counterclockwise, making the force applied during operation more direct.

[0101] The support frame 2 can also drive the three-bar linkage assembly 4 to move through the upper tension spring 51. The entire linkage assembly 4 is stable and reliable, ensuring that the operating mechanism can close the circuit stably.

[0102] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An operating mechanism for a rotary switch, characterized in that, include Frame, operating shaft, output shaft, support frame, jump fastener, locking plate, upper tension spring, lower tension spring, and linkage assembly; The operating shaft and the support frame are rotatably mounted on the frame, and the operating shaft drives the support frame to rotate via a transmission gear. The jump fastener is rotatably mounted on the frame. The jump fastener is adapted to rotate between the re-fastening position and the release position. The locking plate is adapted to restrict the jump fastener in the re-fastening position. The pull spring is adapted to rotate the released jump fastener to the release position. The upper end of the linkage assembly is connected to a jump fastener, and the lower end is equipped with an output shaft. The upper end of the support frame is provided with a tension spring to the linkage assembly. The operating shaft and support frame are adapted to reciprocate between the closed position, the open re-clamping position, and the open tripping position, and the output shaft is adapted to reciprocate between the open position and the closed position; Action 1: When the output shaft is in the open position, the operating shaft and support frame are in the open and re-engaged position, and the trip fastener is in the re-engaged position, the operating shaft moves the output shaft to the closed position via the transmission gear, support frame, upper tension spring and connecting rod assembly. Action 2: When the output shaft, operating shaft, and support frame are in the closed position and the trip fastener is in the re-clamping position, an external force triggers the trip fastener to disengage and rotate to the disengagement position. The upper tension spring drives the linkage assembly to move and moves the output shaft to the open position, while the operating shaft and support frame rotate to the open disengagement position. Action 3: When the operating shaft and support frame are in the open trip position and the trip fastener is in the trip position, the operating shaft drives the support frame to rotate from the open trip position to the closed position via the transmission gear, and the support frame pushes the trip fastener to rotate to the re-tether position; Action 4: When the output shaft, operating shaft, and support frame are in the closed position and the trip fastener is in the re-clamping position, the operating shaft moves the output shaft to the open position via the transmission gear, support frame, upper tension spring, and connecting rod assembly. The support frame includes a rack section, a rotating support section, a baffle section, and a tension spring connection section. The support frame meshes with the transmission gear via a rack section; The support frame forms a rotational fit with the machine frame via a rotating support part; The support frame abuts against the jump fastener via the baffle portion to push the jump fastener to rotate; The support frame is connected to an upper tension spring via a tension spring connection part; The jump fastener includes a fastening part, a transition part, a connecting part, an abutting part, and a tension spring connecting part two; The jump fastener is engaged with the locking plate via the fastening part, so that the jump fastener is kept in the re-fastening position; The jump fastener is rotatably connected to the frame via an adapter; The jump fastener is rotatably connected to the connecting rod assembly via a connecting part; The jump fastener is connected to the lower pull spring via the second tension spring connection part; The jump fastener abuts against the baffle of the support frame via its abutting part, so that the jump fastener is pushed to rotate by the support frame.

2. The operating mechanism for a rotary switch according to claim 1, characterized in that, The linkage assembly includes The first link includes a pair of side rods and a connecting shaft. The lower ends of the side rods are fixedly connected to both ends of the connecting shaft, and the upper ends of the side rods are rotatably connected to the jump fastener via a pin. The connecting shaft is connected to the lower end of the upper tension spring. The second link has its upper end rotatably connected to the connecting shaft and its lower end rotatably connected to the third link; The third link is rotatably connected at one end to the second link and at the other end to the output shaft. The third link is sleeved on the operating shaft and rotates around the operating shaft.

3. The operating mechanism for a rotary switch according to claim 1, characterized in that, The rack includes A pair of side plates and several connecting columns, with the two side plates located at both ends of each connecting column and forming a fixed connection with the connecting column; The side plate has a boss for cooperating with the support frame.

4. The operating mechanism for a rotary switch according to claim 1, characterized in that, An electromagnet is installed on the frame. When the electromagnet detects a malfunction in the rotary switch, it is adapted to rotate the locking plate to control the release of the trip fastener.

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