A leakage circuit breaker with leakage indication function

Abstract

The present invention relates to a leakage circuit breaker, and in particular to a leakage circuit breaker with a leakage indication function. The technical solution adopted by the present invention is: a leakage circuit breaker with a leakage indication function, characterized in that: it includes a housing, the housing is provided with three areas through a partition, the third area is provided with a leakage release and a leakage indication mechanism, the leakage indication mechanism includes a rotating part rotatably arranged on the housing, a torsion spring and an indicator plate, the rotating part includes a first arm cooperating with a telescopic rod of the leakage release, a second arm cooperating with the indicator plate, and a third arm for realizing leakage tripping, the indicator plate and the torsion spring are both rotatably arranged on the partition of the housing, the first abutting arm of the torsion spring abuts against the first arm, and the second abutting arm of the torsion spring abuts against the indicator plate. By adopting the above solution, the present invention overcomes the shortcomings of the prior art and provides a new leakage circuit breaker with a leakage indication that has a simple structure, stable operation, a significantly smaller circuit breaker volume, and a clear display method.

Description

Technical Field

[0001] The present invention relates to a leakage circuit breaker, in particular to a leakage circuit breaker with a leakage indication function. Background Art

[0002] A leakage circuit breaker is an electrical safety device that can quickly cut off the power supply when a leakage occurs to prevent electric shock accidents. Usually, a leakage circuit breaker is equipped with an indicator device to remind people that a leakage has occurred.

[0003] There are many circuit breakers with leakage indication on the market, but their leakage units are independently provided in a housing and are linked to the circuit breaker via a connecting rod. Since the leakage unit is independently provided from the circuit breaker, its structure is not affected by the internal structure of the circuit breaker, so there is sufficient space for the leakage tripping and indication functions. However, this structure is large for the entire circuit breaker, the leakage tripping device is quite complex, and its operation is not sensitive and fast enough.

[0004] For example, the leakage circuit breaker with leakage indication of patent number 201720447458.0 has the following technical solution: comprising a housing, an operating mechanism and a leakage release, wherein the leakage indication rod and an indication elastic member are also included. A small hole is opened on the housing to allow the leakage indication rod to extend out of the housing. The leakage indication rod can move up and down in the housing and has an indication member extending out of the housing.

[0005] The patent determines whether a leakage indication is present by determining whether the leakage indicator rod protrudes from the housing. The applicant believes that this approach has the following problems: 1. Users may mistake the indicator rod for a button and press it, affecting product safety; 2. The indicator rod is easily affected by other components, affecting its operation; 3. The indicator rod needs to extend out of the housing when in operation, which places requirements on product installation; 4. The indication is unclear and prone to misidentification. Summary of the Invention

[0006] The present invention overcomes the deficiencies of the prior art and provides a novel leakage circuit breaker with leakage indication which has simple structure, stable operation, greatly reduced circuit breaker volume and clear display mode.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a leakage circuit breaker with a leakage indication function, characterized in that: it includes a shell, the shell is provided with three areas through a partition, the first area is provided with an L-pole moving contact mechanism, a handle operating mechanism, a trip device and an arc extinguishing chamber, the second area is provided with an N-pole moving contact mechanism, the third area is provided with a leakage trip device and a leakage indication mechanism, the three areas are respectively arranged in parallel, and the second area is located in the middle, the leakage indication mechanism includes a rotating part rotatably arranged on the shell, a torsion spring and an indicator plate, the rotating part includes a first arm cooperating with the telescopic rod of the leakage trip device, a second arm cooperating with the indicator plate and a third arm for realizing leakage tripping, the indicator plate and the torsion spring are both rotatably arranged on the partition of the shell, the first contact arm of the torsion spring contacts the first arm, and the second contact arm of the torsion spring contacts the indicator plate, and the indicator plate includes The connecting sleeve, the indicating block and the limiting boss are integrated or fixedly connected, wherein the connecting sleeve is used to mount the indicating plate on the partition of the shell and realize the rotation setting, the indicating block is used for leakage indication and is provided with a contact edge thereon, the upper side surface of the indicating block is an indicating surface, and an indicating port is provided at the corresponding indicating surface on the shell, the moving contact seat of the N-pole moving contact mechanism is provided with a driving rod, which can push the contact edge to realize the rotation of the indicating block, and the limiting boss cooperates with the second arm to limit the rotation of the indicating block when the circuit breaker is not in leakage tripping or normally closed. The lock of the L-pole moving contact mechanism is provided with a connecting rod, which passes through the partition of the shell and cooperates with the third arm. After the circuit breaker is closed, the leakage tripper is actuated and its telescopic rod pushes the first arm to realize the rotation of the rotating part. At this time, the third arm pushes the connecting rod to actuate, and the connecting rod drives the lock to realize the leakage tripping of the circuit breaker. At the same time, the driving rod moves away from the contact edge, and the indicating plate rotates under the action of the torsion spring to realize the leakage indication.

[0008] By adopting the above solution, various functional modules are arranged in different areas within a shell, which makes the entire product structure very compact, the functional modules will not affect each other, and the installation is also very convenient. In addition, the above structure well realizes the function that the leakage indicator of the circuit breaker does not display leakage when the circuit breaker is manually opened and non-leakage opened, and the leakage indicator only displays leakage when the circuit breaker is opened due to leakage. In addition, multiple arms are provided on the rotating part to achieve different functions, which greatly simplifies the structure of the leakage display function of the product, reduces parts, and simplifies the installation process. Similarly, the indicator board is also a component that realizes multiple functions.

[0009] A further arrangement of the present invention is that the rotating member includes a first rotating member and a second rotating member, and the first rotating member and the second rotating member are arranged on the partition of the shell through the same axis rotation, the first arm and the third arm are arranged on the first rotating member, and the second arm is arranged on the second rotating member, and a resistance rod is provided on the second rotating member, and the resistance rod is in resistance with the first arm, and the first arm rotates to push the resistance rod to realize the rotation of the second rotating member, and the first resistance arm of the torsion spring is in resistance on the resistance rod, and the torsion spring and the indicator plate are sleeved on the same axis.

[0010] By adopting the above solution, since the rotating parts need to cooperate with multiple components such as the connecting rod, leakage release, and indicator plate, and various cooperations need to be realized during the operation process, in addition, the closing mode after non-leakage tripping and leakage tripping is completely different, and the cooperating parts are also different. Therefore, in order to prevent the rotating parts from getting stuck or affecting the normal operation of other components, we set the rotating parts into two, so that there is an action margin between the two components, and there will be no jamming during the operation, ensuring the stability of the product operation. Of course, the design is reasonable and the component standards can also be set as one.

[0011] A further configuration of the present invention is that the top end of the third arm extends toward the second area, the connecting rod extends to the second area, the third arm and the connecting rod are in the second area, a limiting protrusion is provided on the partition of the shell, and the limiting protrusion can limit the indicator plate when the indicator plate is in the leakage indication state.

[0012] By adopting the above solution, we can prevent a component or an extension from being too long, which may cause deformation over time. In addition, the setting of the limit bumps ensures the accuracy of the indicator panel display and prevents erroneous display.

[0013] A further configuration of the present invention is that a mounting seat for a first interference arm of a torsion spring is provided on the interference rod, the first interference arm of the torsion spring interferes with the mounting seat, a limiting step is provided on the second arm, and the limiting boss on the indicator plate cooperates with the limiting step of the second arm to limit the rotation of the indicator block when the circuit breaker is not tripped or normally closed.

[0014] By adopting the above solution, the resistance of the torsion spring is made stable. In addition, the setting of the limit step can well ensure that the indicator plate of the circuit breaker does not rotate when the circuit breaker is in a normal state or a non-leakage tripping state.

[0015] A further configuration of the present invention is that the indicating block and the limiting boss are both arranged on the connecting sleeve, the indicating block is fan-shaped as a whole, and an indicating surface is arranged horizontally on the top surface thereof, and a contact edge is arranged on the side of the indicating block close to the second arm, the outer side of the contact edge is provided for the second contact arm of the torsion spring to contact, and the inner side of the contact edge can be pushed by the lever to realize the rotation of the indicating block, thereby realizing the non-leakage state display of the circuit breaker.

[0016] Through the above solution, multiple functions are realized by using one component, which greatly simplifies the structure and ensures the stability of product operation.

[0017] The final configuration of the present invention is that a rotation margin is left between the first arm of the first rotating member and the interference rod of the second rotating member.

[0018] The rotational allowance here means that the two components are not always in conflict with each other, and that there is space for independent rotation between them within a certain range of motion. It is used to achieve fine-tuning of the movement and increase the stability of product performance.

[0019] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of an embodiment of the present invention;

[0021] Figure 2 This is a structural diagram reflecting the first area according to an embodiment of the present invention;

[0022] Figure 3 This is a structural diagram reflecting the second area according to an embodiment of the present invention;

[0023] Figure 4 This is a structural diagram reflecting the third area according to an embodiment of the present invention;

[0024] Figure 5 This is a structural diagram of the leakage indication mechanism after closing the circuit breaker according to an embodiment of the present invention;

[0025] Figure 6 This is a structural diagram of the leakage release just in action according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure after non-leakage tripping or manual tripping according to an embodiment of the present invention;

[0027] Figure 8 This is a structural diagram of the closing process of an embodiment of the present invention;

[0028] Figure 9 This is a schematic structural diagram of a torsion spring and a shift lever according to an embodiment of the present invention;

[0029] Figure 10 This is a three-dimensional diagram of an indicator board according to an embodiment of the present invention;

[0030] Figure 11 A perspective view of a rotating member according to an embodiment of the present invention;

[0031] Figure 12 Schematic diagram of the position relationship between the lever and the indicator plate after the leakage tripping in an embodiment of the present invention;

[0032] Figure 13 Schematic diagram of the position relationship between the lever and the indicator plate after closing the circuit breaker according to an embodiment of the present invention;

[0033] Figure 14 Schematic diagram of the position relationship between the lever and the indicator plate after non-leakage tripping or manual tripping according to an embodiment of the present invention;

[0034] Figure 15 This is a schematic diagram of the position relationship between the toggle lever and the indicator plate during the closing process after leakage tripping according to an embodiment of the present invention. Implementation Method

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0036] like Figures 1-15As shown, a leakage circuit breaker with a leakage indication function includes a shell 1, and the shell 1 is provided with three areas through a partition. The shell 1 here is a broad concept, which includes an outer shell and an internal partition for isolating space. The first area A is provided with an L-pole moving contact mechanism, a handle operating mechanism, a trip unit and an arc extinguishing chamber. The technical features such as the L-pole moving contact mechanism, the handle operating mechanism, the trip unit and the arc extinguishing chamber are common in existing circuit breakers and will not be described in detail here. The second area B is provided with an N-pole moving contact mechanism, and the third area C is provided with a leakage trip unit 2 and a leakage indication mechanism 3. The three The areas are arranged in parallel, and the second area B is located in the middle. The leakage indication mechanism 3 includes a rotating member 31, a torsion spring 32 and an indicator plate 33 rotatably arranged on the housing 1. The rotating member 31 includes a first arm 311 that cooperates with the telescopic rod of the leakage release 2, a second arm 312 that cooperates with the indicator plate 33, and a third arm 313 that realizes the leakage tripping. The indicator plate 33 and the torsion spring 32 are both rotatably arranged on the partition of the housing 1. The first contact arm 321 of the torsion spring 32 contacts the first arm 311, and the second contact arm 322 of the torsion spring 32 contacts the indicator plate 33. The indicator plate 33 includes a connecting sleeve 331. , indicating block 332 and limiting boss 333, the three are integrated or fixedly connected, wherein the connecting sleeve 331 is used to install the indicating plate 33 on the partition of the housing 1 and realize the rotation setting, the indicating block 332 is used for leakage indication and is provided with a contact edge 3321 thereon, the upper side of the indicating block 332 is an indicating surface, and an indicating port is provided at the corresponding indicating surface on the housing 1, and a shift lever 4 is provided on the moving contact seat of the N-pole moving contact mechanism, which can push the contact edge 3321 to realize the rotation of the indicating block 332, and the limiting boss 333 cooperates with the second arm 312 to limit the rotation of the indicating block 332 when the circuit breaker is not tripped or normally closed. A connecting rod 5 is provided on the lock of the L-pole moving contact mechanism. The connecting rod 5 passes through the partition of the housing 1 and cooperates with the third arm 313. After the circuit breaker is closed, the leakage release is actuated and its telescopic rod pushes the first arm 311 to rotate the rotating member 31. At this time, the third arm 313 pushes the connecting rod 5 to actuate, and the connecting rod 5 drives the lock of the L-pole moving contact mechanism to actuate to realize the leakage tripping of the circuit breaker. At the same time, the lever 4 moves away from the contact edge 3321, and the indicator plate 33 rotates under the action of the torsion spring 32 to realize the leakage indication. The above lock is common in the existing L-pole moving contact device of the circuit breaker. The applicant has previously filed a similar patent application. We will not describe the lock in detail in this patent.By adopting the above solution, various functional modules are arranged in different areas within a single housing 1, making the entire product structure very compact, preventing mutual interference between the functional modules, and making installation very convenient. Furthermore, the above structure effectively achieves the function of the leakage indicator not displaying leakage during manual opening and non-leakage opening of the circuit breaker, and only displaying leakage during leakage opening. Furthermore, by providing multiple arms on the rotating member 31 to achieve different functions, this greatly simplifies the structure of the leakage indicator function of the product, reduces parts, and simplifies the installation process. Similarly, the indicator plate 33 is a single component that performs multiple functions.

[0037] The specific working principle is that when the circuit breaker is manually opened or opened in the absence of leakage, the leakage indication is normal. At this time, the lever 4 is away from the contact edge 3321, the connecting rod 5 is away from the third arm 313, and the second arm 312 is limited by the limiting boss 333. During the closing process, the rotating part 31 does not move, the lever 4 rotates close to or contacts the contact edge 3321, and the connecting rod 5 is close to or contacts one side of the third arm 313. There are two situations for tripping after closing. The first situation is the leakage tripping situation. The leakage releaser is actuated and its telescopic rod pushes the first arm 311 to realize the rotation of the rotating part 31. When the third arm 313 pushes the connecting rod 5 to move, the connecting rod 5 drives the L-pole moving contact mechanism to lock and realize the circuit breaker leakage tripping. At the same time, the lever 4 moves away from the contact edge 3321, and the indicator plate 33 rotates under the action of the torsion spring 32 to realize the leakage indication. In the second non-leakage tripping situation, the circuit breaker trips, the moving contact seat of the N-pole moving contact mechanism drives the lever 4 to move away from the contact edge 3321, and the L-pole moving contact mechanism drives the connecting rod 5 away from the third arm 313. The second arm 312 is limited by the limiting boss 333, the rotating part 31 does not move, and the indicator plate 33 does not show leakage.

[0038] In an embodiment of the present invention, the rotating member 31 includes a first rotating member 3A and a second rotating member 3B, and the first rotating member 3A and the second rotating member 3B are arranged on the partition of the shell 1 through rotation on the same axis. The first arm 311 and the third arm 313 are arranged on the first rotating member 3A, and the second arm 312 is arranged on the second rotating member 3B. A resistance rod 314 is provided on the second rotating member 3B, and the resistance rod 314 is in resistance with the first arm 311. The first arm 311 rotates to push the resistance rod 314 to realize the rotation of the second rotating member 3B. The first resistance arm 321 of the torsion spring 32 is in resistance on the resistance rod 314, and the torsion spring 32 and the indicator plate 33 are arranged on the same axis. With the above solution, the rotating member 31 needs to cooperate with various components of the connecting rod 4, the leakage release 2, and the indicator plate 33, and all these cooperations need to be achieved during the operation process. In addition, the closing mode after the non-leakage trip and the leakage trip are completely different, and the cooperating components are also different. Therefore, in order to prevent the rotating member 31 from getting stuck or affecting the normal operation of other components, we set the rotating member 31 into two. In this way, there is a movement margin between the two components, and there will be no jamming during the operation, ensuring the stability of the product. Of course, the design is reasonable and the component standards can also be set as an integrated whole. In addition, in the embodiment of the present invention, there is a rotation margin between the first arm 311 of the first rotating member 3A and the interference rod 314 of the second rotating member 3B. The rotation margin here means that the two components are not always in conflict with each other, and that there is space for independent rotation between them within a certain range of motion. It means that fine-tuning of the action is achieved and the stability of product performance is increased.

[0039] In this embodiment of the present invention, the top end of the third arm 313 extends toward the second region B. The connecting rod 5 extends into the second region B, and the third arm 313 and the connecting rod 5 are positioned within the second region B. A limiting bump 11 is provided on the partition of the housing 1. The limiting bump 11 limits the position of the indicator plate 33 when the indicator plate 33 is in the leakage indication state. This solution prevents deformation of an overly long component or an overly long extension over time. Furthermore, the provision of the limiting bump 11 ensures the accuracy of the display on the indicator plate 33, preventing erroneous displays.

[0040] In this embodiment of the present invention, the abutment lever 314 is provided with a mounting seat for the first abutment arm 321 of the torsion spring 32, which abuts against this mounting seat. A limiting step is provided on the second arm 312. When the circuit breaker is in a non-leakage tripping or normally closed state, a limiting boss 333 on the indicator plate 33 cooperates with the limiting step of the second arm 312 to limit the rotation of the indicator block 332. This solution ensures a stable abutment of the torsion spring 32, and the provision of the limiting step effectively prevents the indicator plate 33 from rotating when the circuit breaker is in a normal state or in a non-leakage tripping state.

[0041] In an embodiment of the present invention, the indicator block 332 and the limiting boss 333 are both arranged on the connecting sleeve 331. The indicator block 332 is fan-shaped as a whole, and an indicating surface 3322 is horizontally arranged on the top surface thereof. A contact edge 3321 is provided on the side of the indicator block 332 close to the second arm 312. The outer side of the contact edge 3321 is provided for the second contact arm 322 of the torsion spring 32 to contact, and the inner side of the contact edge 3321 can be pushed by the lever 4 to realize the rotation of the indicator block 332, thereby realizing the non-leakage state display of the circuit breaker.

[0042] The above embodiments are only preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A leakage circuit breaker with leakage indication function, characterized by: The invention comprises a shell, wherein the shell is provided with three areas through a partition, wherein the first area is provided with an L-pole moving contact mechanism, a handle operating mechanism, a trip device and an arc extinguishing chamber, the second area is provided with an N-pole moving contact mechanism, and the third area is provided with a leakage trip device and a leakage indication mechanism. The three areas are respectively arranged in parallel, and the second area is located in the middle. The leakage indication mechanism comprises a rotating member rotatably arranged on the shell, a torsion spring and an indication plate, the rotating member comprises a first arm cooperating with a telescopic rod of the leakage trip device, a second arm cooperating with the indication plate and a real The third arm of the leakage tripping circuit breaker is now shown. The indicator plate and the torsion spring are both rotatably arranged on the partition of the shell. The first contact arm of the torsion spring contacts the first arm, and the second contact arm of the torsion spring contacts the indicator plate. The indicator plate includes a connecting sleeve, an indicator block and a limit boss. The three are integrated or fixedly connected. The connecting sleeve is used to install the indicator plate on the partition of the shell and realize the rotation setting. The indicator block is used for leakage indication and is provided with a contact edge. The upper side of the indicator block is an indication surface. An indication port is provided at the corresponding indication surface on the shell. The N-pole moving contact machine A toggle lever is provided on the moving contact seat of the structure, which can push the abutting edge to realize the rotation of the indicator block. The limiting boss cooperates with the second arm to limit the rotation of the indicator block when the circuit breaker is not in leakage tripping or normally closed. A connecting rod is provided on the lock of the L-pole moving contact mechanism, which passes through the partition of the shell and cooperates with the third arm. After the circuit breaker is closed, the leakage tripper is actuated and its telescopic rod pushes the first arm to realize the rotation of the rotating part. At this time, the third arm pushes the connecting rod to move, and the connecting rod drives the lock to realize the leakage tripping of the circuit breaker. At the same time, the toggle lever is away from the abutting edge, and the indicator The plate rotates under the action of the torsion spring to realize leakage indication. The rotating part includes a first rotating part and a second rotating part. The first rotating part and the second rotating part are arranged on the partition of the shell through the same axis. The first arm and the third arm are arranged on the first rotating part, and the second arm is arranged on the second rotating part. A resistance rod is provided on the second rotating part, and the resistance rod is in conflict with the first arm. The first arm rotates to push the resistance rod to realize the rotation of the second rotating part. The first resistance arm of the torsion spring is in conflict with the resistance rod, and the torsion spring and the indicator plate are sleeved on the same axis.

2. A leakage circuit breaker with leakage indication function according to claim 1, characterized in that: The top end of the third arm extends toward the second area, the connecting rod extends to the second area, the third arm and the connecting rod are in the second area, a limiting protrusion is provided on the partition of the shell, and the limiting protrusion can limit the indicator plate when the indicator plate is in the leakage indication state.

3. A leakage circuit breaker with leakage indication function according to claim 1 or 2, characterized in that: A torsion spring first interference arm mounting seat is provided on the interference rod, and the torsion spring first interference arm is in contact with the mounting seat. A limiting step is provided on the second arm, and the limiting boss on the indicator plate cooperates with the limiting step of the second arm to limit the rotation of the indicator block when the circuit breaker is not tripped or normally closed.

4. A leakage circuit breaker with leakage indication function according to claim 1 or 2, characterized in that: The indicating block and the limiting boss are both arranged on the connecting sleeve. The indicating block is fan-shaped as a whole, and an indicating surface is arranged horizontally on the top surface thereof. A contact edge is arranged on the side of the indicating block close to the second arm. The outer side of the contact edge is provided for the second contact arm of the torsion spring to contact, and the inner side of the contact edge can be pushed by the driving rod to realize the rotation of the indicating block, thereby realizing the non-leakage state display of the circuit breaker.

5. A leakage circuit breaker with leakage indication function according to claim 1 or 2, characterized in that: The indicating block and the limiting boss are both arranged on the connecting sleeve. The indicating block is fan-shaped as a whole, and an indicating surface is arranged horizontally on the top surface thereof. A contact edge is arranged on the side of the indicating block close to the second arm. The outer side of the contact edge is provided for the second contact arm of the torsion spring to contact, and the inner side of the contact edge can be pushed by the driving rod to realize the rotation of the indicating block, thereby realizing the non-leakage state display of the circuit breaker.

6. The leakage circuit breaker with leakage indication function according to claim 3, characterized in that: The indicating block and the limiting boss are both arranged on the connecting sleeve. The indicating block is fan-shaped as a whole, and an indicating surface is arranged horizontally on the top surface thereof. A contact edge is arranged on the side of the indicating block close to the second arm. The outer side of the contact edge is provided for the second contact arm of the torsion spring to contact, and the inner side of the contact edge can be pushed by the driving rod to realize the rotation of the indicating block, thereby realizing the non-leakage state display of the circuit breaker.

7. The leakage circuit breaker with leakage indication function according to claim 1, characterized in that: A rotation margin is left between the first arm of the first rotating member and the interference rod of the second rotating member.

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