Leakage protector capable of automatically resetting

Abstract

The utility model belongs to the technical field of leakage protectors, and discloses a leakage protector capable of automatically resetting, which comprises a leakage protection unit, an air switch unit is mounted on the side wall of the leakage protection unit, and a mounting seat is mounted on the side wall of the leakage protection unit and the side wall of the air switch unit together. Mounting plates are fixedly arranged on the side walls, away from each other, of the electric leakage protection unit and the air switch unit, and mounting assemblies used for mounting the electric leakage protection unit and the air switch unit are jointly arranged on the mounting plates and the mounting base. The device has the effect of reducing the working difficulty of workers.

Description

Technical Field

[0001] This utility model relates to the field of residual current device (RCD) technology, and in particular to an RCD with automatic reset capability. Background Technology

[0002] A residual current device (RCD), also known as a residual current circuit breaker, is mainly used to protect equipment from leakage faults and to protect people from fatal electric shocks. It has overload and short circuit protection functions and can be used to protect circuits or motors from overload and short circuits. It can also be used for infrequent switching and starting of circuits under normal conditions.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: When installing and using a residual current device (RCD), it is usually necessary to use multiple bolts to fix the RCD around its perimeter inside the switch cabinet. However, when the RCD needs to be disassembled for maintenance or replacement, multiple bolts need to be loosened one by one before installing the new RCD. The disassembly and assembly process of the RCD is cumbersome and complicated, which makes the maintenance and replacement process of the RCD very inconvenient and increases the difficulty of the work for the staff. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a residual current device (RCD) with automatic reset capability.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an automatically resettable leakage current protector, including a leakage current protection unit, an air switch unit installed on the side wall of the leakage current protection unit, a mounting base jointly installed on the side walls of the leakage current protection unit and the air switch unit, mounting plates fixedly provided on the side walls of the leakage current protection unit and the air switch unit that are far apart from each other, and mounting components for mounting the leakage current protection unit and the air switch unit jointly provided on the mounting plates and the mounting base.

[0006] By adopting the above technical solution, when workers need to install leakage protection units and circuit breaker units, they need to connect the leakage protection units and circuit breaker units to the mounting base through the installation components. In this process, the installation components reduce the difficulty for workers to install and disassemble leakage protection units and circuit breaker units, thereby reducing the difficulty of workers' work.

[0007] Furthermore, the mounting base has symmetrically formed mounting grooves on its sidewalls, and symmetrically formed fixing grooves on the inner walls of the mounting grooves. Mounting holes are formed through the sidewalls of both mounting plates. The mounting assembly includes a mounting rod slidably disposed within the mounting hole, a mounting component fixedly disposed on the sidewall of the mounting rod, a fixing block slidably disposed within the fixing groove, and a first spring fixedly disposed on the sidewall of the fixing block. The other end of the first spring is fixedly disposed on the inner wall of the fixing groove. A first inclined surface is formed on the edge of the fixing block where the sidewall away from the first spring intersects with the sidewall near the mounting plate. The diameter of the mounting component gradually decreases from the end near the mounting rod to the end away from the mounting rod. The mounting component is slidably connected to the mounting groove.

[0008] By adopting the above technical solution, when the operator needs to install the residual current device (RCD) and the circuit breaker unit on the mounting base, the operator must align the mounting component with the mounting groove. Then, the operator slides the mounting rod towards the mounting base, causing the mounting component to slide into the mounting groove under the action of the mounting rod. This allows the mounting component to gradually approach and eventually press against the first inclined surface, causing the fixing block to slide into the fixing groove under the action of the mounting component. Subsequently, when the mounting component and the fixing block separate, the fixing block slides towards the mounting rod under the action of the first spring, causing the side wall of the fixing block away from the first spring to abut against the outer wall of the mounting rod. This causes the mounting component to abut against the side wall of the fixing block, thus fixing the mounting component in the mounting groove, thereby fixing the RCD and the circuit breaker unit to the mounting base.

[0009] Furthermore, a connector is slidably disposed on the outer wall of the mounting rod. The diameter of the connector gradually decreases from the end near the mounting member to the end away from the mounting member. The diameters of the ends of the mounting member and the connector that are close to each other are equal. The connector is slidably connected to the mounting groove.

[0010] By adopting the above technical solution, when workers need to disassemble the leakage current protection unit and the air switch unit, they need to slide the mounting rod towards the mounting groove. This causes the mounting component and the connecting component to slide towards the mounting groove under the action of the mounting rod, gradually bringing the connecting component closer to and eventually pressing against the first inclined surface. The fixing block then slides into the fixing groove under the action of the connecting component. At this time, the fixing block presses against the outer wall of the connecting component under the action of the first spring. Workers need to slide the mounting rod outward, causing the mounting component to slide synchronously with the mounting rod. Because the fixing block presses against the outer wall of the connecting component under the action of the first spring, the mounting rod and the connecting component slide relative to each other when the worker slides the mounting rod outward. When the side wall of the mounting component abuts against the side wall of the connecting component, the connecting component slides outward with the mounting rod under the action of the mounting component. During this process, since the diameters of the ends of the mounting component and the connecting component that are close to each other are equal, the fixing block will not obstruct the mounting component when the connecting component and the fixing block separate, thus reducing the difficulty for workers to disassemble the leakage current protection unit and the air switch unit.

[0011] Furthermore, a limiting plate is fitted on the outer wall of the mounting rod, and the limiting plate is fixed to the mounting rod. A second spring is fitted on the outer wall of the mounting rod, one end of the second spring is fixed to the side wall of the connector away from the mounting member, and the other end of the second spring is fixed to the side wall of the limiting plate near the connector.

[0012] By adopting the above technical solution, after disassembly, the connector is reset under the action of the second spring. In this process, the difficulty for workers to reset the connector is reduced, thereby reducing the difficulty of the workers' work.

[0013] Furthermore, a third spring is fixedly installed on the inner wall of the mounting groove, and the other end of the third spring abuts against the side wall of the mounting component.

[0014] By adopting the above technical solution, when the mounting component slides into the mounting groove, it abuts against the side wall of the fixing block under the action of the third spring (see details). Figure 3 In this process, the probability of the mounting parts sliding due to external forces during use is reduced, thereby improving the stability of the device.

[0015] Furthermore, a baffle plate is fixedly provided on the side wall of the mounting rod away from the mounting component, and the diameter of the baffle plate is larger than the diameter of the mounting rod.

[0016] By adopting the above technical solution, the blocking plate reduces the probability of the mounting rod and the mounting plate separating from each other, thereby improving the stability of the device.

[0017] Furthermore, the elastic force of the second spring is less than that of the first spring.

[0018] By adopting the above technical solution, the elastic force of the second spring is less than that of the first spring, which reduces the probability that the connector will slide under the action of the second spring when the fixed block is pressed against the connector.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. In this application, when workers need to install the leakage current protection unit and the circuit breaker unit, they need to connect the leakage current protection unit and the circuit breaker unit to the mounting base through the installation component. In this process, the installation component reduces the difficulty for workers to install and disassemble the leakage current protection unit and the circuit breaker unit, thereby reducing the difficulty of the workers' work.

[0021] 2. In this application, when the worker needs to install the residual current device (RCD) and the circuit breaker unit on the mounting base, the worker must align the mounting component with the mounting groove. Then, the worker slides the mounting rod towards the mounting base, causing the mounting component to slide into the mounting groove under the action of the mounting rod. This allows the mounting component to gradually approach and eventually press against the first inclined surface, causing the fixing block to slide into the fixing groove under the action of the mounting component. Subsequently, when the mounting component and the fixing block separate, the fixing block slides towards the mounting rod under the action of the first spring, causing the side wall of the fixing block away from the first spring to abut against the outer wall of the mounting rod. This causes the mounting component to abut against the side wall of the fixing block, thus fixing the mounting component in the mounting groove, thereby fixing the RCD and the circuit breaker unit on the mounting base.

[0022] 3. In this application, when the operator needs to disassemble the leakage current protection unit and the air switch unit, the operator needs to slide the mounting rod towards the mounting groove, thereby causing the mounting component and the connecting component to slide towards the mounting groove under the action of the mounting rod. This allows the connecting component to gradually approach and eventually press against the first inclined surface, and then the fixing block slides into the fixing groove under the action of the connecting component. At this time, the fixing block presses against the outer wall of the connecting component under the action of the first spring. The operator needs to slide the mounting rod outward, thereby causing the mounting component to slide synchronously with the mounting rod under the action of the mounting rod. Since the fixing block presses against the outer wall of the connecting component under the action of the first spring, when the operator slides the mounting rod outward, the mounting rod and the connecting component slide relative to each other. When the side wall of the mounting component abuts against the side wall of the connecting component, the connecting component slides outward with the mounting rod under the action of the mounting component. During this process, since the diameters of the ends of the mounting component and the connecting component that are close to each other are equal, when the connecting component and the fixing block separate, the fixing block will not obstruct the mounting component, thereby reducing the difficulty for the operator to disassemble the leakage current protection unit and the air switch unit. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the mounting base in an embodiment of this utility model;

[0025] Figure 3 This is a cross-sectional structural diagram of the mounting component in an embodiment of this utility model.

[0026] In the diagram: 1. Residual current protection unit; 11. Air switch unit; 12. Mounting base; 13. Mounting plate; 2. Mounting groove; 21. Mounting hole; 22. Fixing groove; 3. Mounting assembly; 31. Mounting rod; 32. Mounting component; 33. Fixing block; 34. First spring; 35. First inclined surface; 4. Connecting component; 5. Limiting plate; 51. Second spring; 6. Third spring; 7. Blocking plate. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] like Figure 1-3 As shown in the figure, this application discloses an automatically resettable residual current device (RCD), including an RCD unit 1, an air switch unit 11, a mounting base 12, a mounting plate 13, a mounting assembly 3, a connector 4, a limiting plate 5, a second spring 51, and a third spring 6. The air switch unit 11 is mounted on the side wall of the RCD unit 1. The mounting base 12 has a cuboid structure and is mounted on the side walls of both the RCD unit 1 and the air switch unit 11. Two mounting plates 13 are provided and are respectively fixedly mounted on the side walls of the RCD unit 1 and the air switch unit 11 that are far apart from each other.

[0029] When the staff needs to install the leakage current protection unit 1 and the air switch unit 11, the staff needs to connect the leakage current protection unit 1 and the air switch unit 11 to the mounting base 12 through the installation component 3. In this process, the installation component 3 reduces the difficulty for the staff to install and disassemble the leakage current protection unit 1 and the air switch unit 11, thereby reducing the difficulty of the staff's work.

[0030] The mounting base 12 has symmetrical mounting grooves 2 on its side wall, and symmetrical fixing grooves 22 on the inner wall of the mounting grooves 2. Mounting holes 21 are drilled through the side walls of both mounting plates 13. A mounting assembly 3 is mounted on the mounting plates 13 and the mounting base 12 for mounting the leakage current protection unit 1 and the air switch unit 11. The mounting assembly 3 includes a mounting rod 31, a mounting piece 32, a fixing block 33, and a first spring 34. The mounting rod 31 is a round rod with a horizontal axis. It is slidably mounted within the mounting hole 21. A rubber ring (not shown) is fixedly mounted on the inner wall of the mounting hole 21 to reduce the probability of the leakage current protection unit 1 and the air switch unit 11 sliding relative to the mounting rod 31 under external force during mounting. The mounting piece 32 is fixedly mounted on the side wall of the mounting rod 31, with its axis coinciding with the axis of the mounting rod 31. The diameter of the mounting piece 32 gradually decreases from the end near the mounting rod 31 to the end away from the mounting rod 31, and the mounting piece 32 is slidably connected to the mounting groove 2. The fixing block 33 is a rectangular block structure and is slidably disposed in the fixing groove 22. One end of the first spring 34 is fixedly disposed on the side wall of the fixing block 33, and the other end of the first spring 34 is fixedly disposed on the inner wall of the fixing groove 22. A first inclined surface 35 is provided on the edge of the fixing block 33 where the side wall away from the first spring 34 intersects with the side wall near the mounting plate 13.

[0031] When the operator needs to install the residual current device (RCD) 1 and the circuit breaker unit 11 onto the mounting base 12, the operator must align the mounting component 32 with the mounting groove 2. Then, the operator slides the mounting rod 31 towards the mounting base 12, causing the mounting component 32 to slide into the mounting groove 2 under the action of the mounting rod 31. This allows the mounting component 32 to gradually approach and eventually press against the first inclined surface 35, causing the fixing block 33 to slide into the fixing groove 22 under the action of the mounting component 32. Subsequently, when the mounting component 32 and the fixing block 33 separate, the fixing block 33 slides towards the mounting rod 31 under the action of the first spring 34, causing the side wall of the fixing block 33 away from the first spring 34 to abut against the outer wall of the mounting rod 31. This causes the side wall of the mounting component 32 to abut against the side wall of the fixing block 33, thus fixing the mounting component 32 into the mounting groove 2, thereby fixing the RCD 1 and the circuit breaker unit 11 onto the mounting base 12.

[0032] The connector 4 is slidably disposed on the outer wall of the mounting rod 31, and its axis coincides with the axis of the mounting rod 31. The diameter of the connector 4 gradually decreases from the end near the mounting member 32 to the end far from the mounting member 32. The diameters of the ends of the mounting member 32 and the connector 4 that are close to each other are equal. The connector 4 is slidably connected to the mounting groove 2.

[0033] When the staff needs to disassemble the leakage protection unit 1 and the air switch unit 11, the staff needs to slide the mounting rod 31 towards the mounting groove 2, so that the mounting part 32 and the connecting part 4 slide towards the mounting groove 2 under the action of the mounting rod 31, so that the connecting part 4 gradually approaches and finally presses against the first inclined surface 35, and then the fixing block 33 slides into the fixing groove 22 under the action of the connecting part 4. At this time, the fixing block 33 presses against the outer wall of the connector 4 under the action of the first spring 34. The operator needs to slide the mounting rod 31 outward, so that the mounting part 32 slides synchronously with the mounting rod 31 under the action of the mounting rod 31. Since the fixing block 33 presses against the outer wall of the connector 4 under the action of the first spring 34, when the operator slides the mounting rod 31 outward, the mounting rod 31 and the connector 4 slide relative to each other. When the side wall of the mounting part 32 abuts against the side wall of the connector 4, the connector 4 slides outward with the mounting rod 31 under the action of the mounting part 32. During this process, since the diameters of the ends of the mounting part 32 and the connector 4 that are close to each other are equal, when the connector 4 and the fixing block 33 separate, the fixing block 33 will not obstruct the mounting part 32, thereby reducing the difficulty for the operator to disassemble the leakage protection unit 1 and the air switch unit 11.

[0034] The limiting plate 5 is a circular plate structure, and its axis coincides with the axis of the mounting rod 31. The limiting plate 5 is sleeved on the outer wall of the mounting rod 31, and the limiting plate 5 and the mounting rod 31 are fixed to each other. The second spring 51 is sleeved on the outer wall of the mounting rod 31. One end of the second spring 51 is fixed to the side wall of the connecting member 4 away from the mounting member 32, and the other end of the second spring 51 is fixed to the side wall of the limiting plate 5 near the connecting member 4.

[0035] After disassembly, connector 4 is reset under the action of the second spring 51. This process reduces the difficulty for workers to reset connector 4, thereby reducing the difficulty of their work.

[0036] One end of the third spring 6 is fixedly mounted on the inner wall of the mounting groove 2, and the other end of the third spring 6 abuts against the side wall of the mounting component 32.

[0037] When the mounting component 32 slides into the mounting groove 2, the mounting component 32 abuts against the side wall of the fixing block 33 under the action of the third spring 6 (see details). Figure 3 In this process, the probability of the mounting part 32 sliding due to external force during use is reduced, thereby improving the stability of the device.

[0038] To improve the stability of the device, a baffle plate 7 is fixedly installed on the side wall of the mounting rod 31 away from the mounting component 32. The diameter of the baffle plate 7 is larger than the diameter of the mounting rod 31. The baffle plate 7 reduces the probability of the mounting rod 31 separating from the mounting plate 13, thereby improving the stability of the device.

[0039] To reduce the probability that the connector 4 will slide under the action of the second spring 51 when the fixing block 33 is pressed against the connector 4, the elastic force of the second spring 51 is less than that of the first spring 34. The fact that the elastic force of the second spring 51 is less than that of the first spring 34 reduces the probability that the connector 4 will slide under the action of the second spring 51 when the fixing block 33 is pressed against the connector 4.

[0040] The operating principle of the automatically resettable residual current device in this embodiment is as follows: When the operator needs to install the residual current protection unit 1 and the air switch unit 11, the operator needs to align the mounting component 32 with the mounting groove 2. Then, the operator slides the mounting rod 31 towards the mounting base 12, thereby causing the mounting component 32 to slide into the mounting groove 2 under the action of the mounting rod 31. This allows the mounting component 32 to gradually approach and eventually press against the first inclined surface 35, thereby causing the fixing block 33 to slide into the fixing groove 22 under the action of the mounting component 32. Subsequently, when the mounting component 32 and the fixing block 33 separate, the fixing block 33 slides towards the mounting rod 31 under the action of the first spring 34, thereby causing the side wall of the fixing block 33 away from the first spring 34 to abut against the outer wall of the mounting rod 31, thus causing the mounting component 32 to abut against the side wall of the fixing block 33, thereby fixing the mounting component 32 in the mounting groove 2, thereby fixing the leakage protection unit 1 and the air switch unit 11 on the mounting base 12. When the operator needs to disassemble the leakage protection unit 1 and the air switch unit 11, the operator needs to slide the mounting rod 31 towards the mounting groove 2, thereby causing the mounting component 32 and the connecting component 4 to slide towards the mounting groove 2 under the action of the mounting rod 31, thereby causing the connecting component 4 to gradually approach and finally abut against the first inclined surface 35, thereby causing the fixing block 33 to slide into the fixing groove 22 under the action of the connecting component 4. At this time, the fixing block 33 presses against the outer wall of the connector 4 under the action of the first spring 34. The operator needs to slide the mounting rod 31 outward, so that the mounting part 32 slides synchronously with the mounting rod 31 under the action of the mounting rod 31. Since the fixing block 33 presses against the outer wall of the connector 4 under the action of the first spring 34, when the operator slides the mounting rod 31 outward, the mounting rod 31 and the connector 4 slide relative to each other. When the side wall of the mounting part 32 abuts against the side wall of the connector 4, the connector 4 slides outward with the mounting rod 31 under the action of the mounting part 32. During this process, since the diameters of the ends of the mounting part 32 and the connector 4 that are close to each other are equal, when the connector 4 and the fixing block 33 separate, the fixing block 33 will not obstruct the mounting part 32, thereby reducing the difficulty for the operator to disassemble the leakage protection unit 1 and the air switch unit 11.

[0041] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A self-resetting residual current device, comprising a residual current protection unit (1), characterized in that: An air switch unit (11) is installed on the side wall of the leakage current protection unit (1). A mounting base (12) is installed on the side walls of the leakage current protection unit (1) and the air switch unit (11). A mounting plate (13) is fixedly installed on the side walls of the leakage current protection unit (1) and the air switch unit (11) that are far apart from each other. A mounting assembly (3) for installing the leakage current protection unit (1) and the air switch unit (11) is provided on the mounting plate (13) and the mounting base (12). The mounting base (12) has symmetrically provided mounting grooves (2) on its side wall, and symmetrically provided fixing grooves (22) on the inner wall of the mounting grooves (2). Both mounting plates (13) have through mounting holes (21) on their side walls. The mounting assembly (3) includes a mounting rod (31) slidably disposed in the mounting hole (21), a mounting component (32) fixedly disposed on the side wall of the mounting rod (31), a fixing block (33) slidably disposed in the fixing groove (22), and a fixing component (33) fixedly disposed in the fixing groove (22). A first spring (34) is located on the side wall of the block (33). The other end of the first spring (34) is fixedly mounted on the inner wall of the fixing groove (22). A first inclined surface (35) is provided on the edge where the side wall of the fixing block (33) away from the first spring (34) intersects with the side wall near the mounting plate (13). The diameter of the mounting part (32) near the mounting rod (31) gradually decreases to the diameter away from the mounting rod (31). The mounting part (32) is slidably connected to the mounting groove (2).

2. The automatically resettable residual current device according to claim 1, characterized in that: A connector (4) is slidably disposed on the outer wall of the mounting rod (31). The diameter of the connector (4) gradually decreases from the end near the mounting member (32) to the end away from the mounting member (32). The diameters of the ends of the mounting member (32) and the connector (4) that are close to each other are equal. The connector (4) is slidably connected to the mounting groove (2).

3. The automatically resettable residual current device according to claim 2, characterized in that: A limiting plate (5) is sleeved on the outer wall of the mounting rod (31), and the limiting plate (5) is fixed to the mounting rod (31). A second spring (51) is sleeved on the outer wall of the mounting rod (31). One end of the second spring (51) is fixed to the side wall of the connector (4) away from the mounting member (32), and the other end of the second spring (51) is fixed to the side wall of the limiting plate (5) close to the connector (4).

4. The automatically resettable residual current device according to claim 1, characterized in that: A third spring (6) is fixedly installed on the inner wall of the mounting groove (2), and the other end of the third spring (6) abuts against the side wall of the mounting component (32).

5. A residual current device (RCD) with automatic reset according to claim 1, characterized in that: A baffle plate (7) is fixedly provided on the side wall of the mounting rod (31) away from the mounting component (32), and the diameter of the baffle plate (7) is larger than the diameter of the mounting rod (31).

6. A residual current device (RCD) with automatic reset according to claim 3, characterized in that: The elastic force of the second spring (51) is less than that of the first spring (34).

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