Switch device with electric leakage fault indication function
By introducing a tripping mechanism into the switchgear to drive the leakage current indicator to switch the indication area, the problem of misjudgment of leakage current in existing circuit breakers is solved, and accurate indication of leakage current faults and safe maintenance are achieved.
Patent Information
- Application Number
- CN202423287724.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing residual current circuit breakers determine the presence of leakage current by checking the status of the leakage electrode handle, which carries the risk of misjudgment. Furthermore, intermittent leakage faults are easily overlooked, threatening personal safety.
Design a switchgear with leakage fault indication function. The leakage indicator is driven by the tripping mechanism to switch between displaying the leakage indication area and the normal indication area at the status indication hole to clearly indicate the leakage status of the line. This includes the coordinated operation of the housing, leakage electrode handle, leakage indicator, tripping mechanism and trip unit.
It enables accurate diagnosis of leakage faults, ensures safe maintenance, improves fault analysis efficiency, and reduces personal safety risks and maintenance costs.
Smart Images
Figure CN223771077U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of leakage current indication technology, and specifically to a switchgear with leakage current fault indication function. Background Technology
[0002] Existing residual current operated circuit breakers (RCBOs) primarily determine the presence of leakage current in a circuit by checking whether the leakage electrode handle is in the closed or open position, thus facilitating circuit repair. However, relying solely on the handle's position for indication has several drawbacks, and severe leakage faults can even threaten personal safety, leading to adverse consequences. Therefore, accurate leakage fault diagnosis is crucial. The main drawbacks of existing methods that use handle position to indicate leakage are as follows:
[0003] 1. When troubleshooting a circuit fault, if the leakage electrode handle is manually pulled off, it is impossible to confirm whether there is a leakage fault in the line. Therefore, it is impossible to confirm whether the circuit breaker tripped due to the leakage fault. Moreover, in many cases, the leakage fault in the line is not continuous. If the leakage electrode handle is manually closed after the intermittent leakage fault occurs, the leakage problem in the line can easily be overlooked, and secondary leakage can threaten personal safety.
[0004] 2. In many special cases, the leakage electrode handle does not fall off due to line leakage. In this case, simply relying on the handle to indicate the fault cannot accurately determine the cause of the fault, which brings great difficulty to the troubleshooting of line problems or circuit breaker problems. Utility Model Content
[0005] The present invention aims to provide a switchgear with leakage fault indication function to solve the above-mentioned technical problems.
[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a switchgear with leakage fault indication function, comprising a housing and a leakage electrode handle, a leakage indicator, a tripping mechanism, and a trip unit installed inside the housing. The leakage electrode handle is driven to the tripping mechanism to drive the tripping mechanism to manually open and close the circuit. The trip unit is driven to the tripping mechanism to drive the tripping mechanism to trip the circuit. A status indication hole is provided on the housing. The leakage indicator has a leakage indication area and a normal indication area. The tripping mechanism is used to drive the leakage indicator to move back and forth, thereby making the leakage indication area and the normal indication area switch and be exposed at the status indication hole.
[0007] When the line is normal and the circuit is manually opened and closed, the leakage current indicator does not activate, and the normal indicator area is always displayed at the status indicator hole.
[0008] When a leakage fault occurs in the line, causing the circuit breaker to trip, the tripping mechanism drives the leakage indicator to activate, and the status indicator hole switches from the normal indicator area to the leakage indicator area for display.
[0009] When the circuit breaker is tripped and the line leakage fault is repaired, and manual reclosing is performed, the tripping mechanism drives the leakage current indicator to activate, and the status indicator hole switches from the leakage current indicator area to the normal indicator area for display.
[0010] Preferably, the tripping mechanism includes a U-shaped connecting rod, an intermediate component, a tripping rod, a tripping buckle, a reset plate, and a locking buckle. The leakage electrode handle, the intermediate component, the tripping rod, the locking buckle, and the reset plate are all pivotally connected to the housing. The tripping buckle and the tripping rod are pivotally connected. The leakage electrode handle is driven to the tripping buckle through the U-shaped connecting rod. The tripping buckle and the locking buckle are locked in place. The tripping rod and the intermediate component are driven in place. The tripping buckle and the intermediate component are driven in place with the leakage current indicator.
[0011] When the line is normal and the circuit is manually opened and closed, the tripping clip and intermediate component do not contact the leakage current indicator to prevent the leakage current indicator from being driven to operate, and the normal indication area is always displayed at the status indicator hole.
[0012] When a leakage fault occurs in the line, causing the circuit breaker to trip, the push rod of the trip unit pushes the reset plate to rotate in the forward direction so that the latch rotates in the forward direction and releases the locking engagement with the trip latch. This causes the trip latch to rotate in the reverse direction, moving the leakage indicator in the first direction, so that the status indicator hole switches from the normal indicator area to the leakage indicator area for display.
[0013] When the circuit breaker is manually closed again after the tripping and leakage fault is repaired, the tripping lever rotates in the reverse direction to drive the intermediate component to rotate in the forward direction, which in turn drives the leakage indicator to move in the second direction, so that the status indicator hole switches from the leakage indicator area to the normal indicator area for display.
[0014] Preferably, the leakage electrode handle and the trip unit are respectively located on the upper and lower sides of the tripping mechanism. The leakage electrode handle is located on the upper side of the tripping buckle and is connected to it via a U-shaped connecting rod. The trip unit is located on the lower side of the reset plate. The push rod of the trip unit is used to push the reset plate upward to rotate in the forward direction so that the latch rotates in the forward direction and releases the locking engagement with the tripping buckle.
[0015] Preferably, the bottom side of the leakage current indicator is provided with a first protrusion and a second protrusion, the top side of the trip button is provided with a first transmission part, and the trip button and the leakage current indicator are in contact with the first protrusion through the first transmission part to achieve transmission cooperation. The top side of the intermediate part is provided with a second transmission part, and the intermediate part and the leakage current indicator are in contact with the second protrusion through the second transmission part to achieve transmission cooperation.
[0016] Preferably, a third transmission part is provided on the side of the release lever near the intermediate part, and a fourth transmission part is provided on the side of the intermediate part near the release lever. The release lever and the intermediate part are in contact through the third transmission part and the fourth transmission part to achieve transmission cooperation.
[0017] Preferably, the leakage current indication area is red, and the normal indication area is gray.
[0018] Preferably, the first direction is the left direction, the second direction is the right direction, the normal indication area and the leakage indication area are arranged side by side on the top side of the leakage indicator, and the status indication hole is located above the leakage indicator.
[0019] Preferably, a blocking protrusion is provided on at least one side of the leakage current indicator inside the housing, and an elastic limiting buckle is provided on at least one side of the front and rear sides of the leakage current indicator. The elastic limiting buckle and the blocking protrusion cooperate to block and limit the locking protrusion. The blocking protrusion is used to block the elastic limiting buckle on the left or right side of the blocking protrusion.
[0020] Preferably, the front and rear sides of the leakage current indicator extend to the right to form elastic cantilever arms, and the elastic limit buckle is located on one side of the extended end of the elastic cantilever arm.
[0021] Preferably, the switching device is a circuit breaker.
[0022] This utility model has the following beneficial effects:
[0023] 1. Only when a leakage fault occurs in the line will the leakage indicator area of the leakage indicator be exposed, displaying a specific color. This accurately indicates that the tripping of the residual current circuit breaker is due to a leakage fault in the line. This prevents situations where, during line fault repair, the closing leakage electrode handle is manually moved without confirming whether a leakage fault exists in the line, thus making it impossible to determine whether the circuit breaker tripped due to a leakage fault. In this way, the leakage fault can be accurately identified, allowing for timely and accurate repair or circuit disconnection, ensuring personal safety.
[0024] 2. It can accurately indicate whether the circuit breaker tripping is caused by a leakage fault, which facilitates accurate analysis of the fault cause. This enables quick and accurate troubleshooting of line problems or circuit breaker problems, improving work efficiency and reducing costs. Attached Figure Description
[0025] Figure 1 This is an exploded view of an embodiment of the present invention.
[0026] Figure 2 This is a top view of an embodiment of the present invention in its normal open state.
[0027] Figure 3 This is a left view of an embodiment of the present invention in its normal open state.
[0028] Figure 4 This is a schematic diagram of the internal structure of an embodiment of the present invention in a normal tripping state.
[0029] Figure 5 yes Figure 4 Enlarged diagram of point A in the middle.
[0030] Figure 6 This is a schematic diagram showing the coordination of some components in a normal tripping state according to an embodiment of this utility model.
[0031] Figure 7 This is a top view of an embodiment of the present invention in a normal closed state.
[0032] Figure 8 This is a left view of an embodiment of the present invention in the normal closed state.
[0033] Figure 9 This is a schematic diagram of the internal structure of an embodiment of the present invention in a normal closed state.
[0034] Figure 10 yes Figure 9 Enlarged diagram of point B in the middle.
[0035] Figure 11 This is a schematic diagram showing the coordination of some components in a normal closed state according to an embodiment of this utility model.
[0036] Figure 12 This is a top view of an embodiment of the present invention in the state of leakage fault tripping.
[0037] Figure 13 This is a left view of an embodiment of the present invention in the state of leakage fault tripping.
[0038] Figure 14 This is a schematic diagram illustrating the process of tripping and disconnecting due to a leakage fault in an embodiment of this utility model.
[0039] Figure 15 yes Figure 14 Enlarged diagram of point C in the middle.
[0040] Figure 16 This is a schematic diagram showing the coordination of some components in an embodiment of the present invention under the leakage fault tripping state.
[0041] Figure 17 This is a schematic diagram of the structure of a leakage current indicator according to an embodiment of the present invention.
[0042] Figure 18 This is a schematic diagram of the internal structure of the base according to an embodiment of the present invention.
[0043] Figure 19 This is a schematic diagram of the installation of the leakage current indicator in the base according to an embodiment of the present invention.
[0044] Figure labels: 1 housing, 11 base, 12 side cover, 13 blocking protrusion, 14 status indicator hole, 2 leakage indicator, 21 leakage indicator area, 22 normal indicator area, 23 first protrusion, 24 second protrusion, 25 elastic cantilever, 26 elastic limit buckle, 3 leakage electrode handle, 4 U-shaped connecting rod, 5 intermediate part, 51 second transmission part, 52 fourth transmission part, 6 trip lever, 61 third transmission part, 7 trip buckle, 71 locked part, 72 first transmission part, 8 reset plate, 9 latch, 91 locking part, 10 trip device. Detailed Implementation
[0045] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0046] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0048] For ease of description, "forward" and "reverse" will be referred to as follows: Figure 4 The perspective in the image is the clockwise and counterclockwise direction of the reference reference.
[0049] See Figure 1-19As shown in the figure, as an embodiment of the present utility model, a switchgear with leakage fault indication function is provided, specifically a double-wire electromagnetic residual current operated circuit breaker with overcurrent protection, including a housing 1 and a leakage electrode handle 3, a leakage indicator 2, a tripping mechanism, and a trip unit 10 installed in the housing 1. The leakage electrode handle 3 is driven to the tripping mechanism to drive the tripping mechanism to manually open and close the circuit. The trip unit 10 is driven to the tripping mechanism to drive the tripping mechanism to trip and open the circuit. A status indication hole 14 is provided on the housing 1. The leakage indicator 2 has a leakage indication area 21 and a normal indication area 22. The tripping mechanism is used to drive the leakage indicator 2 to move back and forth, so that the leakage indication area 21 and the normal indication area 22 are switched and exposed at the status indication hole 14.
[0050] When the circuit breaker is in normal condition and is manually opened and closed, the leakage current indicator 2 does not operate (i.e., the tripping mechanism will not drive the leakage current indicator 2 to operate), and the normal indicator area 22 is always displayed at the status indicator hole 14, thus indicating that there is no leakage current fault in the line.
[0051] When a leakage fault occurs in the circuit breaker's line, causing it to trip and open, the tripping mechanism drives the leakage indicator 2 to operate, and the status indicator hole 14 switches from the normal indicator area 22 to the leakage indicator area 21 for display, thereby indicating that there is a leakage fault in the line.
[0052] When the circuit breaker is tripped and the line leakage fault is repaired, and manual reclosing is performed, the tripping mechanism drives the leakage indicator 2 to operate, and the status indicator hole 14 switches from the leakage indicator area 21 to the normal indicator area 22 for display, thereby indicating that the line leakage fault has been restored to normal.
[0053] Specifically, the tripping mechanism includes a U-shaped connecting rod 4, an intermediate part 5, a tripping rod 6, a tripping buckle 7, a reset plate 8, and a locking buckle 9. The leakage electrode handle 3, the intermediate part 5, the tripping rod 6, the locking buckle 9, and the reset plate 8 are all pivotally connected to the housing 1. The tripping buckle 7 is pivotally connected to the tripping rod 6. The leakage electrode handle 3 is connected to the tripping buckle 7 via the U-shaped connecting rod 4. The tripping buckle 7 and the locking buckle 9 are locked in place. The tripping rod 6 and the intermediate part 5 are connected in a transmission manner. The tripping buckle 7 and the intermediate part 5 are connected in a transmission manner to the leakage current indicator 2. The leakage current indicator area 21 is red, which is more eye-catching and convenient for staff to observe. The normal indicator area 22 is gray. The area of the leakage current indicator area 21 is much larger than the area of the normal indicator area 22 to ensure the active display range of the leakage current indicator area 21.
[0054] When the circuit breaker is in normal condition and is manually opened and closed, the trip 7 and intermediate component 5 are not in contact with the leakage current indicator 2, and therefore will not drive the leakage current indicator 2 to operate. The normal indicator area 22 (displayed in gray) is always visible at the status indicator hole 14, thus indicating that there is no leakage current fault in the line.
[0055] When a leakage fault occurs in the line, causing the circuit breaker to trip, the push rod of the trip unit 10 pushes the reset plate 8 to rotate in the forward direction, so that the latch 9 rotates in the forward direction and releases the locking engagement with the trip latch 7. This causes the trip latch 7 to rotate in the reverse direction, driving the leakage indicator 2 to move in the first direction, so that the status indicator hole 14 switches from the normal indicator area 22 to the leakage indicator area 21 for display (the display changes from gray to red), thereby indicating that there is a leakage fault in the line.
[0056] When the circuit breaker is manually closed after the tripping and leakage fault is repaired, the tripping lever 6 rotates in the reverse direction to drive the intermediate component 5 to rotate in the forward direction, which in turn drives the leakage indicator 2 to move in the second direction, so that the status indicator hole 14 switches from the leakage indicator area 21 to the normal indicator area 22 for display (the display changes from red to gray), thus indicating that the leakage fault of the line has been restored to normal.
[0057] Of course, the switching device in this embodiment can be a relay or other switching device in addition to a circuit breaker.
[0058] Specifically, the latch 9 is provided with a locking part 91, and the trip latch 7 is provided with a locked part 71 that can be locked with the locking part 91. The pivot axis between the trip lever 6 and the housing 1 is the D axis, and the pivot axis between the trip latch 7 and the trip lever 6 is the E axis. The D axis and the E axis are different axes. When the circuit breaker is in the open state, the leakage electrode handle 3 is moved, and the trip latch 7 is driven to rotate in the opposite direction around the E axis through the linkage of the U-shaped connecting rod 4 until the locked part 71 and the locking part 91 are locked together due to the rotation of the trip latch 7 (hook and latch lock). At this time, the latch 9 forms a limit on the trip latch 7, and the locking part 91 provides a fulcrum for the trip latch 7. Under the continuous force of the leakage electrode handle 3, the trip latch 7 and the trip lever 6 rotate in the opposite direction around the D axis. The reverse rotation of the trip lever 6 drives the intermediate part 5 to rotate in the forward direction, thereby driving the leakage current indicator 2 to move in the second direction, so that the status indicator hole 14 switches from the leakage current indicator area 21 to the normal indicator area 22 for display.
[0059] In this embodiment, the leakage electrode handle 3 and the trip unit 10 are respectively located on the upper and lower sides of the tripping mechanism. The leakage electrode handle 3 is located on the upper side of the trip buckle 7 and is connected to it (trip buckle 7) through a U-shaped connecting rod 4. The trip unit 10 is located on the lower side of the reset plate 8. The push rod of the trip unit 10 is used to push the reset plate 8 upward to rotate in the forward direction so that the latch 9 rotates in the forward direction and releases the locking engagement with the trip buckle 7. This arrangement makes the assembly layout of each component more reasonable and compact.
[0060] In this embodiment, the bottom side of the leakage current indicator 2 is provided with a first protrusion 23 and a second protrusion 24, the top side of the jumper 7 is provided with a first transmission part 72, and the jumper 7 and the leakage current indicator 2 are in contact with the first protrusion 23 through the first transmission part 72 to achieve transmission cooperation. The top side of the intermediate part 5 is provided with a second transmission part 51, and the intermediate part 5 and the leakage current indicator 2 are in contact with the second protrusion 24 through the second transmission part 51 to achieve transmission cooperation.
[0061] In this embodiment, a third transmission part 61 is provided on the side of the release lever 6 near the intermediate part 5, and a fourth transmission part 52 is provided on the side of the intermediate part 5 near the release lever 6. The release lever 6 and the intermediate part 5 are in contact through the third transmission part 61 and the fourth transmission part 52 to achieve transmission cooperation.
[0062] In this embodiment, a first elastic element, a second elastic element, and a third elastic element are also included torsion springs to provide a reset force. One end of the first elastic element abuts against the housing 1, and the other end abuts against the reset plate 8, so as to maintain the contact between the reset plate 8 and the push rod of the trip unit 10 by its elastic force, and realize the rotational reset of the reset plate 8 after quick release, thereby providing a reset force for the push rod. One end of the second elastic element abuts against the housing 1, and the other end abuts against the latch 9, so as to realize the rotational reset of the latch 9 after quick release. One end of the third elastic element abuts against the housing 1, and the other end abuts against the drain electrode handle 3, so as to realize the rotational reset of the drain electrode handle 3 after quick release.
[0063] In this embodiment, the first direction is the left direction and the second direction is the right direction. That is, the leakage current indicator 2 is installed in the housing 1 by moving back and forth. The normal indicator area 22 and the leakage current indicator area 21 are arranged on the top side of the leakage current indicator 2. The status indicator hole 14 is located above the leakage current indicator 2, thereby ensuring the display effect.
[0064] In this embodiment, the housing 1 includes a base 11 and a side cover 12 that are assembled with each other. A blocking protrusion 13 is provided on at least one side of the leakage current indicator 2 inside the housing 1. An elastic limiting buckle 26 is provided on at least one side of the front and rear sides of the leakage current indicator 2. The elastic limiting buckle 26 and the blocking protrusion 13 are in a blocking and limiting cooperation. The blocking protrusion 13 is used to block the elastic limiting buckle 26 on the left or right side of the blocking protrusion 13 to ensure the stability of the leakage current indicator area 21 or normal indicator area 22 of the leakage current indicator 2 at the status indicator hole 14. This prevents the leakage current indicator 2 from moving due to circuit breaker vibration or other reasons, which would cause the leakage current indicator area 21 or normal indicator area 22 to be unable to be accurately exposed at the status indicator hole 14, and thus fail to accurately indicate the fault condition of the line.
[0065] In this embodiment, the front and rear sides of the leakage current indicator 2 extend to the right to form elastic cantilever 25. The elastic limit buckle 26 is located on one side of the extended end of the elastic cantilever 25, thereby improving the elastic force of the elastic limit buckle 26, ensuring the stability of the blocking and limiting cooperation between the elastic limit buckle 26 and the blocking protrusion 13, and ensuring the smoothness of the elastic limit buckle 26 moving back and forth.
[0066] The working principle of this embodiment is as follows:
[0067] See Figure 4-6 As shown in the figure (only the manual tripping state is shown in the figure), when the circuit breaker is in normal condition and is manually tripped and closed, the trip 7 and the intermediate component 5 are not in contact with the leakage current indicator 2, and therefore will not drive the leakage current indicator 2 to operate. The normal indicator area 22 (displayed in gray) is always exposed at the status indicator hole 14, thus indicating that there is no leakage current fault in the line.
[0068] See Figure 14-16 As shown, when a leakage fault occurs in the line, causing the circuit to trip, the push rod of the trip unit 10 pushes the reset plate 8 upward to rotate in the forward direction so that the latch 9 rotates in the forward direction and releases the locking engagement with the trip latch 7, thereby causing the trip latch 7 to rotate in the reverse direction until the first transmission part 72 of the trip latch 7 abuts against the first protrusion 23 of the leakage indicator 2, thereby pushing the leakage indicator 2 to move to the left, so that the elastic limit latch 26 passes the left side of the blocking protrusion 13, and then the trip latch 7 elastically resets to the position of the tripped state. At this time, the leakage handle is in the position of the tripped state, and the status indicator hole 14 switches from the normal indicator area 22 to the leakage indicator area 21 for display (the display changes from gray to red), thereby indicating that there is a leakage fault in the line;
[0069] See Figure 9-11 As shown, when the circuit breaker trips and the line leakage fault is repaired, and manual reclosing is performed, the circuit breaker leakage electrode handle 3 is initially in the open position. The leakage electrode handle 3 is then moved towards the closed position (clockwise). The leakage electrode handle 3, through the U-shaped connecting rod 4, drives the trip latch 7 to rotate in the reverse direction until the locked part 71 of the trip latch 7 is locked with the locking part 91 of the latch 9, thus locking the movement of the trip latch 7. This causes the trip lever 6 to rotate in the reverse direction. The third transmission part 61 of the trip lever 6 abuts against the fourth transmission part of the intermediate part 5, thereby driving the intermediate part 5 to rotate in the forward direction. The second transmission part 51 of the intermediate part 5 abuts against the second protrusion 24 of the leakage indicator 2, thus pushing the leakage indicator 2 to move to the right. This causes the elastic limit latch 26 to pass the right side of the blocking protrusion 13, causing the status indicator hole 14 to switch from the leakage indicator area 21 to the normal indicator area 22 for display (the display changes from red to gray), indicating that the line leakage fault has been restored to normal.
[0070] In summary, the switchgear with leakage fault indication function in this embodiment has the following advantages:
[0071] 1. Only when a leakage fault occurs in the line will the leakage indicator area 21 of the leakage indicator 2 be exposed in the status indicator hole 14, that is, display a specific color, so as to distinguish it from other states. This can accurately indicate that the tripping of the residual current circuit breaker is caused by a leakage fault in the line. This prevents the inability to confirm whether there is a leakage fault in the line when manually moving the closing leakage electrode handle 3 during line fault repair, and thus the inability to confirm whether the circuit breaker tripped due to a leakage fault. In this way, the leakage fault can be accurately judged, and the circuit can be repaired or disconnected in a timely and accurate manner to ensure personal safety.
[0072] 2. It can accurately indicate whether the circuit breaker tripping is caused by a leakage fault, which facilitates accurate analysis of the fault cause. This enables quick and accurate troubleshooting of line problems or circuit breaker problems, improving work efficiency and reducing costs.
[0073] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.
Claims
1. A switching device having a leakage fault indication function, characterized by: The shell is provided with a leakage electrode handle, a leakage indication piece, a tripping mechanism, and a tripper, the leakage electrode handle and the tripping mechanism are in transmission connection to drive the tripping mechanism to manually open and close the circuit, the tripper and the tripping mechanism are in transmission connection to drive the tripping mechanism to trip and open the circuit, the shell is provided with a state indication hole, the leakage indication piece has a leakage indication area and a normal indication area, the tripping mechanism is used to drive the leakage indication piece to move back and forth, and then the leakage indication area and the normal indication area are switched and exposed at the state indication hole. When the line is normal and the circuit is manually opened and closed, the leakage indication piece does not act, and the normal indication area is always exposed at the state indication hole. When the line has a leakage fault and the circuit is tripped, the tripping mechanism drives the leakage indication piece to act, and the state indication hole is switched from the normal indication area to the leakage indication area for exposure. When the circuit is tripped and the line leakage fault is repaired and the circuit is manually closed again, the tripping mechanism drives the leakage indication piece to act, and the state indication hole is switched from the leakage indication area to the normal indication area for exposure.
2. The switching device having an electric leakage fault indication function according to claim 1, characterized by: The tripping mechanism includes a U-shaped connecting rod, an intermediate piece, a tripping rod, a jumper, a reset plate, and a lock, the leakage electrode handle, the intermediate piece, the tripping rod, the lock, and the reset plate are pivotally connected in the shell, the jumper and the tripping rod are pivotally connected, the leakage electrode handle is in transmission connection with the jumper through the U-shaped connecting rod, the jumper and the lock are in movable locking cooperation, the tripping rod and the intermediate piece are in transmission cooperation, and the jumper and the intermediate piece are in transmission cooperation with the leakage indication piece. When the line is normal and the circuit is manually opened and closed, the jumper and the intermediate piece do not contact the leakage indication piece to prevent driving the leakage indication piece to act, and the normal indication area is always exposed at the state indication hole. When the line has a leakage fault and the circuit is tripped, the push rod of the tripper pushes the reset plate to rotate forward to make the lock rotate forward and the jumper unlock, and then the jumper rotates reversely to drive the leakage indication piece to move in the first direction, and the state indication hole is switched from the normal indication area to the leakage indication area for exposure. When the circuit is tripped and the line leakage fault is repaired and the circuit is manually closed again, the tripping rod reversely rotates to drive the intermediate piece to rotate forward, and then the leakage indication piece moves in the second direction, and the state indication hole is switched from the leakage indication area to the normal indication area for exposure.
3. The switching device having an electric leakage fault indication function according to claim 2, characterized by: The leakage electrode handle and the tripper are arranged on the upper and lower sides of the tripping mechanism, the leakage electrode handle is located above the jumper and is in transmission connection with the jumper through the U-shaped connecting rod, the tripper is located below the reset plate, and the push rod of the tripper is used to push the reset plate upward to rotate forward to make the lock rotate forward and the jumper unlock.
4. The switching device having an electric leakage fault indication function according to claim 2, characterized by: The bottom side of the leakage indication piece is provided with a first protrusion and a second protrusion, the top side of the jumper is provided with a first transmission part, the jumper and the leakage indication piece are in abutting contact through the first transmission part and the first protrusion to realize transmission cooperation, the top side of the intermediate piece is provided with a second transmission part, and the intermediate piece and the leakage indication piece are in abutting contact through the second transmission part and the second protrusion to realize transmission cooperation.
5. The switching device having an electric leakage fault indication function according to claim 2, characterized by: The third transmission part is arranged on one side of the tripping lever close to the intermediate piece, and the fourth transmission part is arranged on one side of the intermediate piece close to the tripping lever, so that the tripping lever and the intermediate piece are in transmission cooperation through the abutting contact of the third transmission part and the fourth transmission part.
6. The switching device having an electric leakage fault indication function according to claim 1, characterized by: The leakage indication area is red, and the normal indication area is gray.
7. The switching device having an electric leakage fault indication function according to claim 2, characterized by: The first direction is the left direction, and the second direction is the right direction.
8. The switching device having an electric leakage fault indication function according to claim 7, characterized by: The normal indication area and the leakage indication area are arranged on the top side of the leakage indication piece in the left and right directions, and the state indication hole is located above the leakage indication piece.
9. The switching device having an electric leakage fault indication function according to claim 8, characterized by: The housing is provided with a blocking protruding buckle on at least one side corresponding to the leakage indication piece, and the leakage indication piece is provided with an elastic limiting buckle on at least one of the front and back sides.
10. The switching device having an electric leakage fault indication function according to any one of claims 1 to 9, characterized by: The elastic limiting buckle is located on one side of the extension end of the elastic cantilever. The switch device is a circuit breaker.