Modular residual-current circuit breaker convenient to disassemble

Abstract

The utility model relates to the technical field of low-voltage electric appliances, in particular to a modular electric leakage circuit breaker convenient to disassemble, which comprises a circuit breaker, an electric leakage protector and an electric leakage detection device arranged on the circuit breaker and the electric leakage protector. The electric leakage detection device comprises a base, the base is provided with a plurality of hooks, the circuit breaker is provided with first clamping grooves corresponding to the plurality of hooks, and the hooks are clamped in the first clamping grooves; grooves are formed in the peripheral sides of the hooks, so that the hooks can be conveniently taken out of the clamping grooves; the electric leakage detection device is connected to the circuit breaker in a hook clamping mode, the side edge of the electric leakage detection device is in a buckle clamping mode, connection is more stable while disassembly is facilitated, the circuit breaker and the electric leakage detection device can be independently disassembled for use, and compared with an existing product of a circuit breaker and an electric leakage detection device which cannot be disassembled for use, the application range of the electric leakage detection device is larger; when the electric leakage detection device needs to be assembled and delivered, the electric leakage detection device is installed by bolts and is not easy to shake and fall off.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, specifically to a modular residual current circuit breaker that is easy to disassemble. Background Technology

[0002] Currently, residual current circuit breakers (RCCBs) achieve leakage current functionality through two structural methods: modular assembly and integrated assembly. Modular assembly involves mounting leakage current modules side-by-side on the side of the circuit breaker. These modules include a leakage current actuation device, a detection circuit board, and a magnetic ring, and their width is twice that of a single-pole circuit breaker. Regardless of whether it's a single-pole or four-pole circuit breaker, each pole must be connected to the leakage current module and pass through the magnetic ring via a wire. This results in long wiring distances, complex wiring, and difficult assembly and disassembly, leading to a large overall size of the RCCB and requiring significant installation space in the distribution cabinet. The number of units that can be installed is limited, and there are disadvantages such as high resistance, high temperature rise, and large size after assembly. In particular, when the circuit breaker module includes multiple circuit breaker poles, it occupies a lot of space after being installed in the distribution box, and the wiring is complicated and disassembly and assembly are difficult. Although the integrated assembly structure can reduce the size to a certain extent compared with the modular assembly structure, its manufacturing process is complicated, the assembly is difficult, and the technical requirements of the assembler are too high. Utility Model Content

[0003] The purpose of this invention is to provide a modular residual current circuit breaker that is easy to disassemble, in order to solve the problems mentioned in the background art.

[0004] The technical solution of this utility model is as follows: A modular residual current circuit breaker that is easy to disassemble includes a circuit breaker, a residual current device (RCD), and a leakage detection device installed on the circuit breaker and the RCD. The leakage detection device includes a base with multiple hooks. The circuit breaker has a first slot corresponding to the multiple hooks, and the hooks are engaged in the first slots. The hooks have grooves around their periphery to facilitate removal from the slots. The circuit breaker has a second slot near the RCD. The RCD has a third slot. A locking element is inserted into the base, and the locking element includes two locking feet that are engaged in the second and third slots respectively, for fixing the circuit breaker and the RCD together.

[0005] Preferably, the residual current device (RCD) has a buckle on the side near the circuit breaker, and the circuit breaker has a corresponding locking hole on the side of the RCD, with the buckle engaging in the locking hole.

[0006] Preferably, the circuit breaker includes a switch, and the residual current device includes a leakage current indicator. The leakage current indicator has a convex bulge that abuts against one side of the switch. When the leakage current indicator rotates abnormally and disconnects the power, it can drive the switch on the circuit breaker to rotate and disconnect the power simultaneously.

[0007] Preferably, the leakage current detection device includes at least one pair of terminal blocks, one end of which is electrically connected to a conductive element on the circuit breaker; the leakage current protector is equipped with a driving device.

[0008] Preferably, when the leakage current protection device is electromagnetic, the driving device passes through the magnetic ring via multiple wires; when the leakage current protection device is electronic, the driving device is connected to the circuit board via multiple wires.

[0009] Preferably, the leakage current protector has multiple limiting grooves on the side near the leakage current detection device. Multiple wires pass through the limiting grooves respectively. A wire pressure plate is provided on one side of the limiting groove. The wire pressure plate abuts against the wire to prevent the wire from loosening. One end of the wire is connected to one side of the terminal block. The wire pressure plate is connected to the limiting groove by bolts.

[0010] Preferably, the leakage current detection device further includes an upper cover, the upper cover having a protrusion on the side near the wiring board, the protrusion abutting against the wiring board; the leakage current detection device is connected to the leakage current protector via a bolt assembly; a plug is inserted above the bolt assembly to prevent accidental disassembly by others.

[0011] Preferably, the upper cover has multiple heat dissipation holes near the wiring board to dissipate heat.

[0012] Preferably, the residual current device (RCD) includes a residual current tripping mechanism and a test button. The residual current tripping mechanism is movably disposed between the RCD and the circuit breaker to trigger the circuit breaker to trip and open.

[0013] Preferably, the leakage current tripping mechanism has a connecting shaft that can slide through an arc-shaped groove formed between the circuit breaker and the leakage current protection device. The circuit breaker has an operating mechanism for closing or opening the circuit. One end of the connecting shaft is fixedly connected to the latch of the operating mechanism. When the connecting shaft is driven by the leakage current tripping mechanism, it slides along the arc-shaped groove and triggers the operating mechanism to perform the circuit breaker opening action.

[0014] Compared with the prior art, this utility model provides a modular residual current circuit breaker that is easy to disassemble, and has at least one of the following advantages:

[0015] 1. It is connected to the circuit breaker using a snap-fit ​​method, and the side uses a snap-fit ​​method, which makes disassembly and disassembly easier and the connection more stable. This product can be used separately for circuit breakers and leakage current detection devices. Compared with existing products that cannot be used separately for circuit breakers and leakage current detection devices, this product has a wider range of applications. The leakage current detection device needs to be assembled and shipped and then installed with bolts, which is not easy to shake or fall off, facilitates inventory management, and improves the rationality and efficiency of assembly.

[0016] 2. Based on the modular assembly of the leakage protection device, leakage detection device and circuit breaker body, there is no need to change the internal structure of the circuit breaker. It has good versatility, reasonable structural layout and can be well applied to the whole series of leakage circuit breaker products. It realizes the standardization and modular production and assembly of products. Assembly is convenient and quick, which helps to reduce the cost of parts inventory management and production costs, and enhance the market competitiveness of products. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the split structure of the leakage current detection device according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the split structure of an embodiment of the present utility model;

[0020] Figure 3 This is a perspective view of an embodiment of the present invention from the rear view direction;

[0021] Figure 4 This is a cross-sectional view of an embodiment of the present invention from the rear view direction;

[0022] Figure 5 This is a cross-sectional view of the inside of the circuit breaker in the left-side direction according to an embodiment of the present invention;

[0023] Figure 6 This is a cross-sectional view of the leakage current detection device in the main view direction according to an embodiment of the present invention;

[0024] Figure 7 This is a cross-sectional schematic diagram of an electromagnetic leakage current protection device according to an embodiment of this utility model;

[0025] Figure 8 This is a cross-sectional schematic diagram of an electronic residual current device according to an embodiment of the present invention;

[0026] Figure 9 This is an exploded view of the leakage current detection device according to an embodiment of this utility model.

[0027] Figure Labels

[0028] 1-Circuit breaker; 11-First slot; 12-Second slot; 13-Third slot; 14-Hook hole; 15-Switch; 16-Conductive component; 17-Operating mechanism; 171-Lock; 18-Arc groove; 2-Residual current device; 21-Snap-on; 22-Residual current indicator; 221-Protrusion; 23-Drive device; 24-Magnetic ring; 25-Circuit board; 26-Limit groove; 27-Wire pressure plate; 3-Residual current detection device; 31-Base; 32-Hook; 321-Groove; 33-Clip; 331-Clip foot; 34-Connecting board; 35-Top cover; 351-Protrusion; 352-Heat dissipation hole; 5-Plug; 6-Residual current tripping mechanism; 61-Connecting shaft; 7-Test button; Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0031] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] like Figures 1 to 9 As shown, the device includes a circuit breaker 1, a residual current device (RCD) 2, and a leakage current detection device 3 installed on the circuit breaker 1 and the RCD 2. The leakage current detection device 3 includes a base 31 with multiple hooks 32. The circuit breaker 1 has a first slot 11 corresponding to each hook 32, and the hooks 32 engage with the first slot 11. The hooks 32 have grooves 321 around their periphery to facilitate removal from the slots 321. The circuit breaker 1 has a second slot 12 near the RCD 2. The RCD 2 has a third slot 13. A locking member 33 is inserted into the base 31, including two locking feet 331 that engage with the second slot 12 and the third slot 13 respectively, for fixing the circuit breaker 1 and the RCD 2. The RCD 2 has a buckle 21 near the circuit breaker 1, and a corresponding locking hole 14 on the side of the circuit breaker 1. The buckle 21 is engaged within the buckle hole 14; it is connected to the circuit breaker using a hook-and-loop fastening method, and the side also uses a buckle-and-loop fastening method, which facilitates disassembly and provides a more stable connection. This product allows for the separate disassembly and use of the circuit breaker and leakage current detection device, which is more applicable than existing products where the circuit breaker and leakage current detection device cannot be separated. The leakage current detection device requires assembly before shipment and installation with bolts, making it less prone to shaking or falling off, facilitating inventory management, and improving the rationality and efficiency of assembly. The modular assembly of the leakage current protection device, leakage current detection device, and circuit breaker body does not require changes to the internal structure of the circuit breaker, offering good versatility and a reasonable structural layout. It can be well applied to all series of leakage current circuit breaker products, achieving standardized and modular production assembly. Assembly is convenient and quick, which helps reduce parts inventory management costs and production costs, enhancing the product's market competitiveness.

[0035] The circuit breaker 1 includes a switch 15, and the residual current device 2 includes a leakage current indicator 22. The leakage current indicator 22 has a protrusion 221, which abuts against one side of the switch 15. When the circuit breaker 1 malfunctions and causes the switch 15 to rotate and cut off the power, the leakage current indicator 22 is unaffected. When the leakage current indicator 22 malfunctions and rotates to cut off the power, the indicator trips, which can simultaneously drive the switch 15 on the circuit breaker 1 to rotate and cut off the power, improving the safety of the product. The leakage current detection device 3 includes at least one pair of terminal blocks 34, one end of which is electrically connected to the conductive element 16 on the circuit breaker 1. The residual current device 2 is equipped with a drive device 23. When the residual current device is electromagnetic, the drive device 23 passes through the magnetic ring 24 through multiple wires. When the residual current device is electronic, the drive device 23 is connected to the circuit board 25 through multiple wires. The residual current device has multiple limiting grooves 26 on the side near the leakage detection device. Multiple wires pass through the limiting grooves 26 respectively. A wire pressure plate 27 is provided on one side of the limiting groove 26. The wire pressure plate 27 abuts against the wire to prevent the wire from loosening. The wire is connected to the side of the terminal block 34. The wire pressure plate 27 is connected to the limiting groove 26 by bolts.

[0036] The leakage current detection device 3 also includes an upper cover 35, on which a protrusion 351 is provided near the terminal block 34, the protrusion 351 abutting against the terminal block 34; the leakage current detection device 3 is connected to the leakage current protector 2 via a bolt assembly 4, wherein the bolt assembly includes a bolt and a nut, the nut being embedded in the leakage current protector 2, and the connection via the bolt and nut is more stable; a plug 5 is inserted above the bolt assembly 4 to prevent accidental disassembly; the upper cover 35 has multiple heat dissipation holes 352 near the terminal block 34 for heat dissipation; the leakage current protector 2 includes a leakage current tripping mechanism 6 and a test button 7, the leakage current tripping mechanism 6 being movably disposed between the leakage current protector and the circuit breaker 21 for... The circuit breaker is triggered to trip and open; leakage current information is detected by connecting the leakage current detection device 3, and the leakage current tripping mechanism 6 is controlled to drive when the leakage current information exceeds the set range; the circuit breaker 1 is tripped and opened by the operation of the leakage current tripping mechanism 6; the leakage current tripping mechanism 6 is provided with a connecting shaft 61 that can slide through the arc-shaped groove 18 formed between the circuit breaker 1 and the leakage current protector 2; the circuit breaker 1 is provided with an operating mechanism 17 that makes it close or open; one end of the connecting shaft 61 is fixedly connected to the latch 171 of the operating mechanism 17; when the connecting shaft 61 is driven by the leakage current tripping mechanism 6, it slides along the arc-shaped groove 18 and triggers the operating mechanism 17 to perform the circuit breaker opening action.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A modular residual current circuit breaker that is easy to disassemble, characterized in that: The system includes a circuit breaker, a residual current device (RCD), and a leakage current detection device installed on the circuit breaker and the RCD. The leakage current detection device includes a base with multiple hooks. The circuit breaker has a first slot corresponding to each hook, and the hooks engage in the first slots. The hooks have grooves around their periphery to facilitate removal from the slots. The circuit breaker has a second slot near the RCD. The RCD has a third slot. A locking element is inserted into the base, comprising two locking feet that engage in the second and third slots respectively, for fixing the circuit breaker and the RCD together.

2. The modular residual current circuit breaker that is easy to disassemble as described in claim 1, characterized in that: The residual current device is provided with a buckle on the side near the circuit breaker, and the circuit breaker is provided with a corresponding locking hole on the side of the buckle, and the buckle is engaged in the locking hole.

3. The modular residual current circuit breaker that is easy to disassemble as described in claim 1, characterized in that: The circuit breaker includes a switch, and the residual current device includes a leakage current indicator. A protrusion is provided on one side of the leakage current indicator, and the protrusion abuts against one side of the switch. When the leakage current indicator rotates abnormally and cuts off the power, it can drive the switch on the circuit breaker to rotate and cut off the power at the same time.

4. The modular residual current circuit breaker that is easy to disassemble as described in claim 1, characterized in that: The leakage current detection device includes at least one pair of terminal blocks, one end of which is electrically connected to a conductive element on the circuit breaker; the leakage current protector is equipped with a driving device.

5. A modular residual current circuit breaker that is easy to disassemble as described in claim 4, characterized in that: When the leakage current protection device is electromagnetic, the driving device passes through the magnetic ring via multiple wires; when the leakage current protection device is electronic, the driving device is connected to the circuit board via multiple wires.

6. A modular residual current circuit breaker that is easy to disassemble as described in claim 1, characterized in that: The leakage current protector has multiple limiting grooves on the side near the leakage current detection device. Multiple wires pass through the limiting grooves respectively. A wire pressure plate is provided on one side of the limiting groove. The wire pressure plate abuts against the wire to prevent the wire from loosening. One end of the wire is connected to one side of the terminal block. The wire pressure plate is connected to the limiting groove by bolts.

7. A modular residual current circuit breaker that is easy to disassemble as described in claim 4, characterized in that: The leakage current detection device also includes a top cover, which has a protrusion on the side near the wiring board, and the protrusion abuts against the wiring board; the leakage current detection device is connected to the leakage current protector by a bolt assembly; a plug is inserted into the top of the bolt assembly to prevent accidental disassembly by others.

8. A modular residual current circuit breaker that is easy to disassemble as described in claim 7, characterized in that: The top cover has multiple heat dissipation holes near the wiring board to dissipate heat.

9. A modular residual current circuit breaker that is easy to disassemble as described in claim 1, characterized in that: The residual current device includes a residual current tripping mechanism and a test button. The residual current tripping mechanism is movably connected between the residual current device and the circuit breaker to trigger the circuit breaker to trip and open.

10. A modular residual current circuit breaker that is easy to disassemble as described in claim 9, characterized in that: The leakage current tripping mechanism is provided with a connecting shaft that can slide through an arc-shaped groove formed between the circuit breaker and the leakage current protection device. The circuit breaker is provided with an operating mechanism to close or open the circuit. One end of the connecting shaft is fixedly connected to the latch of the operating mechanism. When the connecting shaft is driven by the leakage current tripping mechanism, it slides along the arc-shaped groove and triggers the operating mechanism to perform the circuit breaker opening action.

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