A manual operating mechanism for a contactor

Abstract

The present invention discloses a manual contactor operating mechanism, characterized by comprising a base plate, a bracket mounted on the base plate, and an opening and closing device. The bracket is provided with a partition, the opening and closing device is located below the partition, and the partition is provided with a linkage device that drives the opening and closing device to open or close. The manual contactor operating mechanism provided by the present invention has faster opening and closing speeds, higher safety, and can operate multiple contactors in a coordinated manner.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly relates to a manual operating mechanism for a contactor. Background Art

[0002] When a contactor fails and there is no magnetic field, it can only be switched on and off through a manual operating mechanism. When using this manual operating mechanism, turning the handle can achieve the switching on and off of the contactor. However, the rotation speed of the handle is relatively slow, which affects the switching-off or switching-on speed. Sometimes, although the contactor fails, it may not be in a power-off state. At this time, using the manual operating mechanism has a certain risk. In addition, when multiple contactors need to be opened and closed simultaneously, the handles can only be rotated individually one by one, and the operation is not convenient. Summary of the Invention

[0003] In view of the deficiencies of the background art, the technical problem to be solved by the present invention is to provide a manual operating mechanism for a contactor with a faster switching-on and switching-off speed, higher safety, and capable of enabling multiple contactors to be linked.

[0004] To this end, the present invention is implemented as follows:

[0005] A manual operating mechanism for a contactor, characterized in that: it includes a bottom plate, a bracket and a switching-on and off device provided on the bottom plate. A partition is provided inside the bracket, the switching-on and off device is located below the partition, and a linkage device for driving the switching-on and off device to open or close is provided on the partition.

[0006] Further, the linkage device includes a frame, a handle shaft and a linkage rod provided on the partition. The handle shaft is rotatably connected to the bracket and the frame. A handle is provided on the handle shaft, and a rotating shaft is movably provided on the handle shaft. A slider is movably inserted through the frame. Baffles for blocking the rotating shaft are provided on the left and right sides of the slider, and the slider can drive the linkage rod to move up and down.

[0007] Further, a torsion spring is provided on the frame. One end of the torsion spring is movably inserted into the frame, and the other end is movably inserted into the rotating shaft. First linkage plates and second linkage plates are hinged on the front and rear sides of the linkage rod. A hinge seat for hinging with the first linkage plate is provided inside the frame, and the second linkage plate is hinged with the slider passing through the frame.

[0008] Further, an annular chute is provided on the outer circle of the rotating shaft. A slide rail inserted into the annular chute is provided on the handle shaft. Arc-shaped stoppers for blocking the rotating shaft are provided on the left and right sides of the slide rail, and slide rails inserted into the annular chute are provided on the inner walls of the arc-shaped stoppers.

[0009] Further, columns for blocking the arc-shaped stoppers are provided between the bracket and the frame on both sides of the handle shaft, and the columns are fixed to the bracket by bolts.

[0010] Further, a microswitch connected to the contactor is provided on the bracket. A square column is provided at the upper end of the handle shaft, and a cam capable of opening the microswitch is sleeved on the square column. A plurality of through holes are equally divided in the circumferential direction of the cam. When a plurality of manual operating mechanisms of the contactors are linked together, at least one connecting plate is arranged between two adjacent cams, and the connecting plate is fixed to the through hole of the cam by shaft riveting.

[0011] Further, a flat plate is provided inside the frame, and a guiding hole for the linkage rod to pass through is provided on the flat plate.

[0012] After adopting the above technical solution, when turning the handle during opening or closing the switch, the arc-shaped stopper on one side of the handle shaft drives one end of the rotating shaft and the torsion spring to move. At this time, the torsion spring is in an energy storage state. When the handle shaft rotates to a corresponding position, the energy stored in the torsion spring is instantly released, driving the rotating shaft to accelerate and move towards the arc-shaped stopper on the other side of the handle shaft, and driving the handle shaft and the slider to move quickly in the other direction, thereby making the opening or closing speed faster. Moreover, when the handle shaft rotates, it drives the cam to rotate, thereby opening the microswitch and cutting off the power supply of the contactor first. The operation safety is higher in the power-off state. In addition, when a plurality of manual operating mechanisms of the contactors are linked together, at least one connecting plate is arranged between two adjacent cams, and the connecting plate is fixed to the through hole of the cam by shaft riveting. Turning one handle can drive a plurality of manual operating mechanisms of the contactors to be linked together, and the operation is simple, convenient and fast. Description of the Drawings

[0013] The present invention has the following drawings:

[0014] Figure 1 It is a schematic structural diagram of the present invention in the closed state;

[0015] Figure 2 It is a schematic structural diagram of the present invention in the open state;

[0016] Figure 3 It is a three-dimensional structural diagram of the linkage device in the present invention;

[0017] Figure 4 It is a schematic structural diagram of the linkage of two manual operating mechanisms of the contactors.

[0018] Reference numerals: 1, bottom plate; 2, bracket; 3, opening and closing device; 4, partition board; 5, frame; 6, handle shaft; 7, linkage rod; 8, rotating shaft; 9, slider; 10, baffle; 11, torsion spring; 12, first linkage plate; 13, second linkage plate; 14, hinge seat; 15, annular chute; 16, slide rail; 17, arc-shaped stopper; 18, column; 19, bolt; 20, microswitch; 21, square column; 22, cam; 23, through hole; 24, connecting plate; 25, flat plate; 26, guiding hole. Detailed Embodiments

[0019] As shown in the above-mentioned drawings, a manual operating mechanism of a contactor provided by the present invention includes a bottom plate 1, a bracket 2 and a switching device 3 provided on the bottom plate 1. A partition 4 is provided inside the bracket 2. The switching device 3 is located below the partition 4. A linkage device for driving the switching device 3 to open or close is provided on the partition 4. The linkage device includes a frame 5, a handle shaft 6 and a linkage rod 7 provided on the partition 4. The handle shaft 6 is rotatably connected to the bracket 2 and the frame 5. A handle is provided on the handle shaft 6, and a rotating shaft 8 is movably provided on the handle shaft 6. A slider 9 is movably inserted through the frame 5. Baffles 10 for blocking the rotating shaft 8 are provided on both the left and right sides of the slider 9, and the slider 9 can drive the linkage rod 7 to move up and down. A torsion spring 11 is provided on the frame 5. One end of the torsion spring 11 is movably inserted into the frame 5, and the other end is movably inserted into the rotating shaft 8. First linkage plates 12 and second linkage plates 13 are hinged to both the front and rear sides of the linkage rod 7. An articulated seat 14 hinged to the first linkage plate 12 is provided inside the frame 5. The second linkage plate 13 is hinged to the slider 9 passing through the frame 5. An annular chute 15 is provided on the outer circumference of the rotating shaft 8. A slide rail 16 inserted into the annular chute 15 is provided on the handle shaft 6. Arc-shaped stoppers 17 for blocking the rotating shaft 8 are provided on both the left and right sides of the slide rail 16. The inner wall of the arc-shaped stopper 17 is provided with a slide rail 16 inserted into the annular chute 15. Columns 18 for blocking the arc-shaped stoppers 17 are provided between the bracket 2 and the frame 5 on both sides of the handle shaft 6. The columns 18 are fixed to the bracket 2 by bolts 19. A microswitch 20 connected to the contactor is provided on the bracket 2. A square column 21 is provided at the upper end of the handle shaft 6. A cam 22 for opening the microswitch 20 is sleeved on the square column 21. A plurality of through holes 23 are equally divided in the circumferential direction on the cam 22. When a plurality of manual operating mechanisms of the contactor are linked together, at least one connecting plate 24 is provided between two adjacent cams 22, and the connecting plate 24 is fixed to the through hole 23 of the cam 22 by shaft riveting. A flat plate 25 is provided inside the frame 5. A guiding hole 26 for the linkage rod 7 to pass through is provided on the flat plate 25.

[0020] In this embodiment, when the handle is rotated during opening or closing the switch, the arc-shaped stopper 17 on one side of the handle shaft 6 drives the rotation shaft 8 and one end of the torsion spring 11 to move. At this time, the torsion spring 11 is in the energy storage state. When the handle shaft 6 rotates to the corresponding position, the energy stored in the torsion spring 11 is instantly released, driving the rotation shaft 8 to accelerate and move towards the arc-shaped stopper 17 on the other side of the handle shaft 6, and driving the handle shaft 6 and the slider 9 to move quickly in the other direction, thereby making the opening or closing speed faster. Moreover, when the handle shaft 6 rotates, it will drive the cam 22 to rotate, thereby causing the cam 22 to turn on the micro switch 20, making the contactor de-energize first, and the operation safety is higher in the de-energized state. In addition, when multiple contactor manual operating mechanisms are linked together, at least one connecting plate 24 is arranged between two adjacent cams 22, and the connecting plate 24 is fixed on the through hole 23 of the cam 22 by shaft riveting. Rotating one handle can drive multiple contactor manual operating mechanisms to be linked together, and the operation is simple, convenient and fast. The above is only the preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacement on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A manual operating mechanism for a contactor, characterized in that: The cam is provided with a plurality of springs, each of which is connected to the frame by a plurality of springs, and the cam is connected to the frame by a plurality of springs. The cam is connected to the frame by a plurality of springs, and the cam is connected to the frame by a plurality of springs. The frame is provided with a hinge seat hinged to the first linkage plate, the second linkage plate is hinged to the slider passing through the frame, the outer ring of the rotating shaft is provided with an annular slide groove, the handle shaft is provided with a slide rail inserted into the annular slide groove, the left and right sides of the slide rail are provided with arc-shaped blocks blocking the rotating shaft, the inner wall of the arc-shaped block is provided with a slide rail inserted into the annular slide groove, the bracket is provided with a micro switch connected to the contactor, the upper end of the handle shaft is provided with a square column, the square column is provided with a cam that can open the micro switch, the cam has a plurality of through holes equally divided on the circumference, when multiple contactor manual operating mechanisms are linked together, at least one connecting plate is provided between two adjacent cams, and the connecting plate is fixed to the through hole of the cam by shaft riveting.

2. The manual operating mechanism of the contactor according to claim 1, characterized in that: A column for blocking the arc-shaped block is provided between the bracket and the frame on both sides of the handle shaft, and the column is fixed to the bracket by bolts.

3. The manual operating mechanism of the contactor according to claim 1, characterized in that: A flat plate is provided in the frame, and a guide hole for the linkage rod to pass through is provided on the flat plate.

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