Interlock structure of bypass power switching device

Abstract

The present invention relates to an interlocking structure of a bypass power switching device, including an automatic switching switch formed with a lever access portion, a bypass switch which bypasses a normal power source or a standby power source supplied to a load side and includes a bypass lever, and an interlocking device which can close the lever access portion. The interlocking device includes a main lever rotatably connected to the bypass lever, which can raise and lower the automatic switching switch by rotation of the bypass lever, a raising and lowering member which is raised and lowered in linkage with raising and lowering of the main lever and forms a slope toward the lever access portion, and an opening and closing plate which is pushed along the slope to the lever access portion or an original position based on raising and lowering of the raising and lowering member. When the power source is bypassed by the bypass switch, the lever access portion is closed regardless of the type of the access power source, preventing manual switching of the automatic switching switch, and the automatic switching switch can be accessed to a switchboard only when the access power source of the bypass switch and the access power source of the automatic switching switch are identical.

Description

TECHNICAL FIELD

[0001] The present invention relates to an interlocking structure of a bypass power switching device, and more particularly to a structure for physically preventing manual switching of an automatic transfer switch when bypass power is supplied, and for allowing the automatic transfer switch to be connected to a distribution panel only when the power sources connected to the bypass switch and the automatic transfer switch are identical. BACKGROUND

[0002] Generally, large buildings or factories and the like use normal power supplied from a power plant such as a Korean power plant, and use emergency power generated by an internal power generation device only when the normal power is abnormal (e.g., power outage). The large buildings or factories and the like are provided with an automatic power switching device including an automatic transfer switch (ATS) that connects the normal power and a load side to supply power to the load side in normal times, and connects the emergency power and the load side to supply the emergency power to the load side when the normal power is abnormal. The automatic power switching device connects the automatic transfer switches in parallel, and performs switching to supply power through other automatic transfer switches provided in parallel when one automatic transfer switch is faulty, and provides a bypass power switching device for facilitating maintenance and equipment testing of the faulty automatic transfer switch.

[0003] As shown in FIG. 1, the bypass power switching device is provided with an automatic transfer switch 10 and a bypass switch 20 inside a distribution panel 30, and as shown in FIG. 2, normal power terminals 10-1, 20-1 for supplying normal power, emergency power terminals 10-2, 20-2 for supplying emergency power, and load terminals 10-3, 20-3 for supplying power to a load side are connected and arranged in parallel on fixed terminals of the respective switches 10, 20, and switching of the power terminals 10-1, 10-2, 20-1, 20-2 is performed through movable terminals 10-4, 20-4 of the respective automatic transfer switches 10, 20. Figure 1 As shown in FIG. 3, a lever insertion portion 10a is formed on the front of the automatic transfer switch 10, and a manager can manually switch the power of the automatic transfer switch 10 by inserting a lever into the lever insertion portion 10a. In addition, when maintenance, repair, testing, and the like of the automatic transfer switch 10 of the bypass power switching device are performed, switching can be performed through the bypass switch 20 to ensure continuous power supply without interruption of power supply to the load side. Figure 2 Figure 1 However, the conventional bypass power switching device as described above has the following problems, i.e.,

[0004] However, the conventional bypass power switching device as described above has the following problems, i.e., ​

[0005] First, in order to maintain, repair, and test the automatic transfer switch, the bypass switch 20 is switched to the normal power source or the standby power source, and then the management personnel or the operator can forget to switch the bypass switch 20, and thus the operating lever is manually switched to the operating lever insertion portion 10a to manually switch the power source of the automatic transfer switch 10. In this case, the power supply device can be damaged, and a fire can be caused. That is, the bypass power switching device does not malfunction when the power source to which the bypass switch 20 is connected and the power source to which the automatic transfer switch is connected are the same, but if the operator inadvertently manually switches the power source of the automatic transfer switch through the operating lever insertion portion 10a in a state in which the power source to which the bypass switch 20 is connected and the power source to which the automatic transfer switch is connected are different, a serious accident can occur.

[0006] Second, the bypass power switching device has a problem in that, when the management personnel connects the power source through the bypass switch 20 and disconnects the automatic transfer switch 10 from the distribution panel 30 to perform a test or maintenance operation and then connects the automatic transfer switch 10 to the original position of the distribution panel 30, if the power source to which the bypass switch 20 is connected and the power source to which the automatic transfer switch 10 is connected are different, the aforementioned accident can occur. That is, when the management personnel disconnects the automatic transfer switch 10 from the distribution panel 30 and connects the normal power source or the standby power source to the automatic transfer switch 10 to perform a test or maintenance operation, if the power source to which the automatic transfer switch 10 is connected and the power source to which the bypass switch 20 is connected are different when the operator connects the automatic transfer switch 10 to the original position of the distribution panel 30 after completing a series of operations, the device can be damaged, and a fire or the like can occur.

[0007] Prior Art Documents

[0008] Patent Documents

[0009] Patent Document 1: Korean Patent Registration No. 10-0844202 SUMMARY

[0010] Problems to be Solved

[0011] In view of the foregoing, the present application aims to provide an interlocking structure of a bypass power switching device in which, when a power source is bypassed by a bypass switch, an operating lever insertion portion of an automatic transfer switch is automatically closed, thereby preventing the automatic transfer switch from being manually switched from the root.

[0012] Means for Solving the Problem

[0013] In order to achieve the above object, the present application provides an interlocking structure of a bypass power switching device, comprising: an automatic switching switch, a through-hole type lever access portion for manually switching a normal power supply and a standby power supply is formed on the automatic switching switch; a bypass switch, the bypass switch can bypass the normal power supply or the standby power supply supplied to the load side through the automatic switching switch, and comprises a bypass lever capable of manually changing the bypass circuit; and an interlocking device, when the bypass lever is operated, the interlocking device can automatically close the lever access portion; wherein the interlocking device comprises: a main rod rotatably connected to the bypass lever, the automatic switching switch can be lifted by the rotation of the bypass lever; a lifting member linked with the lifting action of the main rod, capable of lifting in the height direction of the automatic switching switch, and a slope is formed towards the lever access portion; and an opening and closing plate, based on the lifting action of the lifting member, the opening and closing plate is pushed to the lever access portion or the original position along the slope of the lifting member to open and close the lever access portion.

[0014] Inventive Effects

[0015] According to the interlocking structure of the bypass power switching device of the present application, when the power supply is bypassed through the bypass switch, the lever access portion of the automatic switching switch is automatically closed, so that the operator can be prevented from manually switching the power supply of the automatic switching switch from the root. Therefore, the present application can prevent the damage to the load side equipment or the fire accident caused by the difference between the bypassed power supply and the automatic switching device during the repair and test of the automatic switching switch.

[0016] In addition, according to the present application, when the power supply is bypassed through the bypass switch, the automatic switching switch can only be connected to the switchboard when the access power supply of the automatic switching switch disconnected from the switchboard and the access power supply of the bypass switch are consistent, so that the damage to the equipment and the accident caused by the inconsistency between the access power supply of the bypass switch and the access power supply of the automatic switching switch can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of a bypass power switching device.

[0018] Figure 2 is a circuit structure diagram of a bypass power switching device.

[0019] Figure 3 is a schematic diagram of an interlocking structure of a bypass power switching device according to a preferred embodiment of the present application.

[0020] Figure 4 is a front view of an interlocking structure of a bypass power switching device according to a preferred embodiment of the present application.

[0021] Figure 5 FIG. 6 is a rear view of the interlocking structure of the bypass power switching device according to the preferred embodiment of the present application.

[0022] Figure 6a and Figure 6b FIG. 7 is a side view and a front view of the interlocking structure of the bypass power switching device according to the preferred embodiment of the present application, showing the operation of the automatic switching switch.

[0023] Figure 7a and Figure 7b FIG. 8 is a side view and a front view of the interlocking structure of the bypass power switching device according to the preferred embodiment of the present application, showing the bypassing to the normal power source through the bypass switch.

[0024] Figure 8a and Figure 8b FIG. 9 is a side view and a front view of the interlocking structure of the bypass power switching device according to the preferred embodiment of the present application, showing the bypassing to the standby power source through the bypass switch.

[0025] Figure 9 FIG. 10 is a schematic diagram showing the state in which the automatic switching switch is connected to the standby power source when the power source is bypassed to the normal power source through the bypass switch.

[0026] Figure 10 FIG. 11 is a schematic diagram showing the state in which the automatic switching switch is connected to the normal power source when the power source is bypassed to the standby power source through the bypass switch.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 10, automatic switching switch; 10a, lever connecting portion; 12, normal power source rotating shaft; 13, 23, cam connector; 14, 24, restraint protrusion; 20, bypass switch; 21, bypass lever; 100, main rod; 110, stopper; 200, lifting member; 210, lifting hole; 220, inclined surface; 221, upper inclined surface; 222, lower inclined surface; 300, opening and closing plate; 310, guide rod; 320, spring; 330, 510, roller; 400, interlocking member; 410, interference member; 411, long slot; 420, first connector; 421, interference protrusion; 430, second connector; 500, guide member; 520, guide hole. DETAILED DESCRIPTION

[0029] The terms and words used in the present specification and claims are not limited to the commonly used meanings but are to be interpreted as having a meaning that is consistent with the technical idea of the present application to appropriately define the concepts of the terms based on the principle that an inventor can properly define the concept of the terms in the best way for the most proper method for describing the application.

[0030] Reference will now be made to Figures 3 to 10 An interlocking structure (hereinafter referred to as an interlocking structure) of a bypass power switching device according to a preferred embodiment of the present application will be described.

[0031] As shown in Figure 3 and Figure 4 , in a bypass power switching device in which an automatic transfer switch 10 and a bypass switch 20 are connected in parallel, the interlocking structure includes an interlocking device capable of closing an access portion 10a of a lever formed on the automatic transfer switch 10. The bypass switch 20 includes a bypass lever 21 for changing an access direction of the bypass switch 20, as shown in Figure 6a 、 Figure 7a and Figure 8a , the bypass lever 21 is disposed at an inner side of a switchboard 30 and is rotatable in an up-and-down direction. For example, when the bypass lever 21 is rotated toward an upper side of the switchboard 30, the bypass switch 20 is connected to a normal power source, and when the bypass lever 21 is rotated toward a lower side of the switchboard 30, the bypass switch is connected to a standby power source.

[0032] As shown in Figure 4 , the interlocking device includes a main lever 100, a lifting member 200, an opening-and-closing plate 300, an interlocking member 400, and a guide member 500.

[0033] The main lever 100 is disposed between the bypass lever 21 and the interlocking member 400, which will be described later, and functions to transmit a rotating action of the bypass lever 21 to the opening-and-closing plate 300. The main lever 100 is disposed in a direction perpendicular to the bypass lever 21. The main lever 100 is rotatably connected to the bypass lever 21, and when the bypass lever 21 is forwardly or reversely rotated, the main lever 100 is lifted or lowered in a height direction at an inner side of the switchboard 30.

[0034] The lifting member 200 is capable of being lifted or lowered by a lifting action of the main lever 100 and functions to push or pull the opening-and-closing plate 300. The lifting action of the lifting member 200 is achieved by the interlocking member 400, which will be described later. As shown in Figure 4 and Figure 5As shown, preferably, the lifting member 200 is formed in a panel shape curved along the side and front of the automatic transfer switch 10. At this time, a lifting hole 210 for combining with a guide member 500 described later is provided on one side of the lifting member 200 corresponding to the side of the switchboard 30, so that the lifting member 200 can be smoothly lifted. The lifting hole 210 is used for the roller of the guide member 500 described later to be inserted and rotated, so that the lifting member 200 is smoothly lifted. Preferably, the lifting hole 210 is formed in a long hole shape toward the height direction of the lifting member 200, and is formed in a plurality. In addition, the other side of the lifting member 200 corresponding to the front of the switchboard 30 is formed with a slope 220. The slope 220 is formed toward the lever access portion 10a of the automatic transfer switch 10, but is formed in an angle symmetrical in the up-down direction with the center of the middle part of the lifting member 200. That is, the slope 220 is formed with the center of the other side middle part of the lifting member 200, and the slope 220 gradually widens in the up-down width toward the lever access portion 10a. The slope 220 of this configuration can be divided into an upper slope 221 and a lower slope 222 with the center of the middle part of the lifting member 200.

[0035] The opening and closing plate 300 is a configuration that substantially closes the lever access portion 10a by the rotating action of the bypass lever 21. The opening and closing plate 300 is located at the rear side of the front panel of the automatic transfer switch 10, and can reciprocate toward the lever access portion 10a. As long as it is a shape that can close the lever access portion 10a, there is no specific limitation to the shape of the opening and closing plate 300, and for example, Figure 5 As shown, one side of the opening and closing plate 300 is formed with a guide rod 310. The guide rod 310 is a configuration that links the opening and closing plate 300 by the lifting action of the lifting member 200, and is formed protruding outward from the opening and closing plate 300. The guide rod 310 is located at the middle part of the lifting member 200, and this position is also the starting position of the slope 220 of the lifting member 200, and when the lifting member 200 is lifted, the guide rod 310 can move along the slope 220. In addition, as shown, Figure 6b As shown, the opening and closing plate 300 is provided with a spring 320, so that the reciprocating motion of the opening and closing plate 300 is smoother. In addition, as shown, Figure 4 As shown, the opening and closing plate 300 is provided with a roller 330, so that the reciprocating motion of the opening and closing plate 300 is smoother.

[0036] The interlocking member 400 is provided between the main lever 100 and the lifting member 200, and functions to transmit the lifting action of the main lever 100 to the lifting member 200. As shown, Figure 4As shown, the interlocking member 400 includes an interference member 410, a first connector 420, and a second connector 430. The interference member 410 is formed to protrude outward from the main rod 100, forming a long groove 411 opening toward the front of the switchboard 30. One end of the first connector 420 is positioned in the long groove 411, which is used for the first connector 420 to rotate without interference, smoothly, following the lifting of the interference member 410. The first connector 420 is rotatably connected on the inner side of the automatic transfer switch 10, and rotates toward the height direction of the main rod 100, i.e., the lifting direction of the main rod 100, based on the lifting action of the interference member 410. As described above, one end of the first connector 420 is positioned in the long groove 411 of the interference member 410, and more precisely, one end of the first connector 420 has an interference protrusion 421 protruding outward, which is positioned in the long groove 411, so that the action of the interference member 410 is transmitted to the first connector 420 through the interference protrusion 421. The second connector 430 is provided between the first connector 420 and the lifting member 200, and is linked with the action of the first connector 420. One end of the second connector 430 is rotatably connected with the other end of the first connector 420, and the other end of the second connector 430 is rotatably connected with the lifting member 200. Based on this structure, when the first connector 420 rotates around the shaft, the second connector 430 functions to push the lifting member 200 downward or pull it upward.

[0037] The guide member 500 functions to smoothly guide the lifting of the lifting member 200 and the reciprocating motion of the shutter 300. That is, the guide member 500 functions to guide the lifting path of the lifting member 200 and the moving path of the shutter 300. As shown, Figure 4 and Figure 5 As shown, the guide member 500 is formed in a shape curved along the side and the front of the automatic transfer switch 10. One side of the guide member 500 is provided with a roller 510, which can roll along the lifting hole 210 of the lifting member 200. That is, when the lifting member 200 is lifted, the roller 510 of the guide member 500 rolls along the lifting hole 210, so that the lifting member 200 is lifted more smoothly. In addition, the other side of the guide member 500 is formed with a guide hole 520. The guide hole 520 is configured to be used for the roller 330 provided on the shutter 300 to roll, so that the shutter 300 can be reciprocated smoothly.

[0038] Next, the action of the interlocking structure of the above structure will be described in detail.

[0039] Figure 6a and Figure 6bThe side view and front view of the operating state of the automatic transfer switch 10 when normally supplying power are shown, and it can be seen from the figures that the bypass lever 21 is not connected to any of the power sources of the bypass switch 20. In addition, it can also be seen that the lever connection portion 10a is in an open state so as to enable manual switching of the automatic transfer switch 10. In this state, when repair, testing, or other work is required for the automatic transfer switch 10, an operator bypasses the power supplied by the automatic transfer switch 10 through the bypass switch 20.

[0040] For example, as shown in Figure 7a , the operator rotates the bypass lever 21 upward to bypass the normal power source from the automatic transfer switch 10 to the bypass switch 20. At this time, as the bypass lever 21 is rotated upward, the main rod 100 rises together with the interference member 410 above the switchboard 30. At this time, since the interference protrusion 421 of the first connector 420 is located in the long groove 411 of the interference member 410, the first connector 420 is linked with the interference member 410 and is further rotated upward. As can be seen from Figure 6a and Figure 7a , as the first connector 420 is rotated, one end of the first connector 420 rises and the other end of the first connector 420 descends. As the other end of the first connector 420 descends, the lifting member 200 descends to the lower portion of the switchboard 30, and at this time, the roller 510 rolls along the lifting hole 210, thereby smoothly lowering the lifting member 200.

[0041] As can be seen from Figure 6b and Figure 7b , as the lifting member 200 descends, the guide rod 310 of the opening and closing plate 300 is guided along the upper inclined surface 221 of the lifting member 200, and the moving distance of the opening and closing plate 300 is equal to the moving distance of the guide rod 310 along the upper inclined surface 221. That is, the opening and closing plate 300 stretches the spring 320 and moves toward the right side of the figure along the guide hole 520 of the guide member 500, thereby closing the lever connection portion 10a. Therefore, according to the present application, after the power source of the automatic transfer switch 10 is bypassed by the bypass lever 21, the opening and closing plate 300 is linked with the bypass lever 21 and automatically closes the lever connection portion 10a, thereby fundamentally preventing manual switching of the automatic transfer switch 10. As shown in Figure 6a , after the operator completes a series of work on the automatic transfer switch 10, the bypass lever 21 is connected to the original position.

[0042] In addition, as shown in Figure 8aAs shown, the operator can also rotate the bypass lever 21 downward to bypass the alternate power supply from the automatic switch 10 to the bypass switch 20. At this time, the main lever 100, together with the interference member 410, is lowered to the lower part of the switchboard 30, the first connector 420 rotates as the interference member 410 is lowered, and the other end thereof is raised. As the other end of the first connector 420 is raised, the lifting member 200 is raised toward the upper part of the switchboard 30. As shown, Figure 6b and Figure 8b As shown, as the lifting member 200 is raised, the guide rod 310 of the opening and closing plate 300 is guided along the lower inclined surface 222 of the lifting member 200, so that the opening and closing plate 300 is moved, and in turn, the lever access part 10a is closed, at this time, the moving distance of the opening and closing plate 300 is the same as the moving distance of the guide rod 310 along the lower inclined surface 222.

[0043] As described above, through the action of the interlocking device, the present application is characterized in that, whether the normal power supply is bypassed or the alternate power supply is bypassed through the bypass lever 21, when the power supply is bypassed, the opening and closing plate 300 is automatically moved and the lever access part 10a is closed. In other words, according to the present application, when the power supply of the automatic switch 10 is bypassed, the lever access part 10a is unconditionally closed, thereby preventing the operator from inadvertently manually switching the automatic switch 10 from the root.

[0044] In addition, the present application is characterized in that, during the process of bypassing the power supply of the automatic switch 10 and disconnecting the automatic switch 10 from the switchboard 30 for repair or test operation and then accessing the original position, when the access power of the automatic switch 10 and the access power of the bypass switch 20 are different, the automatic switch 10 can be prevented from being accessed to the original position in the switchboard 30. In other words, the technical feature of the present application is that it can prevent equipment damage and accidents caused by the difference between the access power of the automatic switch 10 and the access power of the bypass switch 20.

[0045] Therefore, as shown, Figure 4 The automatic switch 10 according to the present application includes a normal power supply rotating shaft 12 for accessing the normal power supply and an alternate power supply rotating shaft 22 for accessing the alternate power supply, and the normal power supply rotating shaft 12 and the alternate power supply rotating shaft 22 are arranged in the height direction. Cam connectors 13, 23 are provided on the respective ends of the normal power supply rotating shaft 12 and the alternate power supply rotating shaft 22, and the cam connectors 13, 23 rotate in linkage with the rotating shafts 12, 22. The cam connector 13 of the normal power supply rotating shaft 12 and the cam connector 23 of the alternate power supply rotating shaft 22 are arranged symmetrically, and the directions of the eccentric parts thereof are opposite. In addition, constraint protrusions 14, 24 are outwardly protruded on the cam connectors 13, 23. The constraint protrusions 14, 24 are protruded from the cam connectors 13, 23 toward the main lever 100, and can interfere with the stopper described later.

[0046] The main rod 100 is provided with a stopper 110 in the height direction of the main rod 100. The stopper 110 is configured to be interfered by the restraint protrusion 14, 24, and is provided in plurality on the main rod 100. To be more precise, two stoppers 110 are provided on the main rod 100, and the interval between the stoppers 110 corresponds to the interval of the restraint protrusions 14, 24 of the main power supply rotating shaft 12 and the backup power supply rotating shaft 22, but the stoppers 110 are interfered by the restraint protrusions 14, 24 on the main power supply rotating shaft 12 or the backup power supply rotating shaft 22 when the main rod 100 is raised or lowered by the rotation of the bypass operating lever 21.

[0047] Next, the function of the automatic transfer switch 10 of the bypass power supply switching device to enter or exit the switchboard 30 will be described, wherein the bypass power supply switching device includes the stopper 110 and the restraint protrusion 14, 24.

[0048] Figure 6a It is the normal operation state of the automatic transfer switch 10, and the restraint protrusions 14, 24 of the main power supply rotating shaft 12 and the backup power supply rotating shaft 22 are located between the two stoppers 110, so that the automatic transfer switch 10 can freely enter or exit the switchboard 30. At this time, as shown in FIG. 5, the operator can disconnect the automatic transfer switch 10 from the switchboard 30 after bypassing the main power supply, and perform a series of operations. For example, the operator can disconnect the automatic transfer switch 10 from the switchboard 30, change the power supply of the automatic transfer switch 10 and perform various operations. At this time, since the main circuit is in a connected state through the bypass switch 20, even if the automatic transfer switch 10 is disconnected from the switchboard 30, the power supply is not affected. Then, after completing a series of operations on the automatic transfer switch 10, the operator needs to connect the automatic transfer switch 10 to the original position of the switchboard. At this time, as shown in FIG. 6, the bypass operating lever 21 is rotated to the upper bypass main power supply, and the power supply of the automatic transfer switch 10 is rotated by the backup power supply rotating shaft 22, so that the cam connector 23 is directed to the backup power supply side, and the restraint protrusion 24 provided on the backup power supply rotating shaft 22 is interfered by the stopper 110 on the lower part of the main rod 100. Therefore, after disconnecting the automatic transfer switch 10 from the switchboard 30, unless the operator rotates the backup power supply rotating shaft 22 originally rotated to the backup power supply connection direction to the opening direction again, the automatic transfer switch 10 cannot be connected to the switchboard 30. Figure 9 Figure 9

[0049] In addition, as shown in FIG. 7, the bypass operating lever 21 is rotated to the lower bypass backup power supply, and the power supply of the automatic transfer switch 10 is rotated by the main power supply rotating shaft 12, so that the cam connector 23 is directed to the main power supply side, and the restraint protrusion 14 provided on the main power supply rotating shaft 12 is interfered by the stopper 110 on the lower part of the main rod 100. Therefore, after disconnecting the automatic transfer switch 10 from the switchboard 30, unless the operator rotates the main power supply rotating shaft 12 originally rotated to the main power supply connection direction to the opening direction again, the automatic transfer switch 10 cannot be connected to the switchboard 30. Figure 10 ​​As shown, in the state that the bypass operating lever 21 is rotated downward to bypass the standby power supply, in order to rotate the automatic switch 10 to the normal power supply rotating shaft 12 to connect the normal power supply, unless the operator rotates the normal power supply rotating shaft 12 originally rotated to the normal power supply connecting direction to the opening direction again, the automatic switch cannot be connected to the switchboard 30 because the constraint protrusion 14 of the normal power supply rotating shaft 12 is interfered by the limiter 110 on the upper part of the main rod 100.

[0050] As described above, the interlocking structure of the bypass power supply switching device according to the present application can automatically close the operating lever connecting part of the automatic switch when bypassing the power supply, regardless of the type of the bypass power supply, so that when the power supply disconnected from the automatic switch and the bypass power supply are inconsistent, the automatic switch cannot be connected to the switchboard. Therefore, according to the present application, when the automatic switch is repaired, maintained, tested or the like by bypassing the power supply, the equipment can be prevented from being damaged, and the safety accidents such as electric shock of the operator can be prevented.

[0051] As described above, the specific embodiments of the present application are described in detail, and various modifications and changes can be made within the technical idea of the present application, which is obvious to those skilled in the art, and such modifications and changes should belong to the scope of the claims of the present application.

Claims

1. An interlocking structure for a bypass power switching device, characterized in that, include: An automatic switching switch having a through-hole type lever access portion for manually switching between the main power supply and the backup power supply; A bypass switch, which can bypass the main power supply or backup power supply to the load side via an automatic switching switch, and includes a bypass lever for manually changing the bypass circuit. as well as, An interlocking device is configured to automatically close the lever access portion when the bypass lever is operated. The interlocking device includes: The main rod is rotatably connected to the bypass control lever, and the automatic switching switch can be raised or lowered by rotating the bypass control lever. A lifting component, which is linked to the lifting action of the main rod, is capable of lifting and lowering according to the height direction of the automatic switching switch, and forms an inclined surface towards the control lever access portion; and, An opening and closing plate, which is pushed along the inclined surface of the lifting member to the control lever access portion or its original position based on the lifting action of the lifting member, so as to open and close the control lever access portion. An interlocking component is provided between the main rod and the lifting component to link the lifting action of the main rod to the lifting component; The interlocking components include: An interference member is disposed on the main rod and has an elongated groove formed in a direction perpendicular to the lifting direction of the main rod. The first connector is configured such that one end is located in the long slot of the interference member, and can rotate toward the height direction of the main rod as the main rod moves up and down with the long slot. A second connector, one end of which is rotatably connected to the other end of the first connector, and the other end of which is rotatably connected to the lifting member, wherein when the first connector rotates, it pushes the lifting member downward or lifts the lifting member upward.

2. The interlocking structure of the bypass power switching device according to claim 1, characterized in that, The inclined surface is formed with the middle of the lifting member as the center, and the upper and lower widths of the inclined surface increase in the direction toward the control lever access portion.

3. The interlocking structure of the bypass power switching device according to claim 2, characterized in that, The opening and closing plate includes: A guide rod, the guide rod being configured to guide along the upper and lower inclined surfaces of the lifting member; and, A spring provides elastic force for the opening and closing plate to reciprocate toward the control lever access portion.

4. The interlocking structure of the bypass power switching device according to claim 1, characterized in that, A guide component is provided between the opening / closing plate and the lifting component. One side of the guide component is provided with rollers so that the lifting component can be raised and lowered smoothly. The other side of the guide component is formed with an elongated guide hole facing the moving direction of the opening and closing plate to guide the reciprocating movement of the opening and closing plate.

5. The interlocking structure of the bypass power switching device according to any one of claims 1-3, characterized in that, The automatic transfer switch includes a primary power supply rotating shaft and a backup power supply rotating shaft. These shafts rotate when connected to the primary or backup power supply. The primary and backup power supply rotating shafts are positioned relative to each other in the vertical direction. Each end of the main power supply rotating shaft and the backup power supply rotating shaft is connected to a cam connector, and the cam connectors of the main power supply rotating shaft and the backup power supply rotating shaft are arranged symmetrically to each other. The edge of the cam connector is provided with interference protrusions that protrude toward the main rod. The main rod is equipped with two limiters in the height direction. When the automatic switching switch moves in and out of the distribution panel with the rotation of the cam connector, the interference protrusion is blocked by the limiters and is interfered with. The interlocking structure is configured such that the automatic transfer switch can only connect to the distribution panel without interference from the limit switch when the power supply of the bypass switch and the power supply of the automatic transfer switch are the same.

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