Adapter for leakage circuit breaker

Abstract

The present invention discloses an adapter for a leakage circuit breaker, which comprises a housing and two conductive sheets arranged in the housing, and the two conductive sheets are insulated from each other; one ends of the two conductive sheets extend out from the same side of the housing as a first power connection end for connecting to the power connection end on the leakage circuit breaker, and the other ends of the two conductive sheets each have two second power connection ends, and a first power connection structure for connecting a flexible wire and a second power connection structure for connecting an external conductive insert are respectively connected to the two second power connection ends; a first through hole for inserting the flexible wire is provided at a position corresponding to the first power connection structure on the housing, and a second through hole for inserting the external conductive insert is provided at a position corresponding to the second power connection structure on the housing. The structure of the present invention is reasonable. After the above converter is connected to the power connection end of the leakage circuit breaker, it can be adapted to connect large-size wires and has two different external power connection methods.

Description

Technical Field

[0001] The present invention relates to an adapter, and more particularly to an adapter for a leakage circuit breaker. Background Art

[0002] Existing leakage circuit breakers, also known as residual current operated circuit breakers (RCCBs), are mainly used to protect against electric shock when a leakage fault occurs in a device and to protect against fatal electric shock to the human body. They have overload and short - circuit protection functions, and can be used to protect the overload and short - circuit of a line or a motor. They can also be used for the infrequent conversion and start - up of a line under normal circumstances. In the prior art, the internal circuit design of a leakage circuit breaker with a width of 18 mm can already carry a current of 63 A or even larger. However, due to the limited width dimension of the leakage circuit breaker, the aperture of the wiring hole at the power connection end and the size of the corresponding wiring structure are relatively small, which is not suitable for connecting large - gauge wires. Therefore, a leakage circuit breaker with a width of 18 mm is usually used in small - current applications below 40 A, which affects its popularization and use. Summary of the Invention

[0003] In view of this, the present invention aims to provide a leakage - circuit - breaker adapter with a reasonable structure, which can be installed at the power connection end of a leakage circuit breaker and is suitable for connecting large - gauge wires.

[0004] The technical solution for achieving the object of the present invention is as follows:

[0005] A leakage - circuit - breaker adapter includes a housing and two conductive sheets disposed in the housing, and the two conductive sheets are insulated from each other; one end of the two conductive sheets extends out from the same side of the housing as a first power connection end for connecting to the power connection end on the leakage circuit breaker, and the other ends of the two conductive sheets each have two second power connection ends. A first power connection structure for connecting a flexible wire and a second power connection structure for connecting an external conductive insert are respectively connected to the two second power connection ends; a first through - hole for inserting the flexible wire is provided at a position corresponding to the first power connection structure on the housing, and a second through - hole for inserting the external conductive insert is provided at a position corresponding to the second power connection structure on the housing.

[0006] In the above - mentioned technical solution, the first power connection structure includes a rectangular frame and a pressing screw. The rectangular frame is electrically connected to the corresponding second power connection end. A threaded through - hole is provided on the upper side of the rectangular frame, and the pressing screw is screwed into the threaded through - hole. The upper end of the pressing screw has an operating portion.

[0007] In the above - mentioned technical solution, a cross - shaped groove or a straight - shaped groove is provided on the upper end surface of the operating portion.

[0008] In the above technical solution, the second power connection structure includes a conductive spring and a positioning seat sleeved outside the conductive spring. The conductive spring has clamping arms arranged oppositely and a connecting plate connecting the same ends of the two clamping arms. The two clamping arms cooperate to clamp the inserted external conductive tab. The positioning seat is a U-shaped structure with a narrower upper part and a wider lower part. The two side walls are correspondingly abutted against the outer sides of the corresponding clamping arms, and the bottom wall of the positioning seat is abutted against the outside of the connecting plate. The connecting plate is electrically connected to the corresponding second power connection terminal.

[0009] In the above technical solution, the housing is formed by connecting a first housing and a second housing.

[0010] The present invention has positive effects: The converter adopts the above structure in the present invention. The converter is installed at the power connection end of the leakage circuit breaker. Specifically, the first power connection end of the conductive sheet is inserted into the wiring hole at the power connection end of the leakage circuit breaker and connected through the power connection structure. And the size of the converter housing outside the leakage circuit breaker is not restricted by the width size of the leakage circuit breaker. Therefore, perforations (the first perforation and the second perforation) with larger hole diameters and a larger specification power connection structure can be provided on the housing of the converter. Thus, through the conversion of this adapter, the leakage circuit breaker can be used in occasions with a larger current (above 40A), which is more conducive to the popularization and use of the product. In addition, when wiring externally, a flexible wire can be connected through the first power connection structure as needed, or / and an external conductive tab (a metal sheet structure) can be connected through the second power connection structure. Thus, the same power connection end of the leakage circuit breaker has two different external wiring methods. In actual applications, power can be connected from the outside in an alternative manner, or both methods can be used to connect power simultaneously, which has good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram when the adapter in the present invention is connected to the leakage circuit breaker;

[0012] Figure 2 It is a schematic structural diagram of the adapter in the present invention;

[0013] Figure 3 Viewed from another angle Figure 2 It is a schematic structural diagram of the shown adapter;

[0014] Figure 4 It is a schematic structural diagram of the adapter in the present invention after removing the housing;

[0015] Figure 5 It is a schematic structural diagram of a conductive sheet (with a first power connection structure and a second power connection structure) in the present invention;

[0016] Figure 6 It is a schematic diagram of the second power connection structure in the present invention;

[0017] Figure 7 This is a schematic structural diagram of the conductive spring in the present invention.

[0018] The reference numerals shown in the figure are: 01 - leakage circuit breaker; 1 - housing; 11 - first through hole; 12 - second through hole; 100 - first housing; 101 - second housing; 2 - conductive sheet; 21 - first power connection end; 22 - second power connection end; 3 - rectangular frame; 4 - pressure screw; 5 - conductive spring; 51 - clamping arm; 52 - connecting plate; 53 - connecting piece; 6 - positioning seat. Detailed implementation manners

[0019] The following will describe the specific structure in the present invention with reference to the accompanying drawings of the specification:

[0020] A converter for a leakage circuit breaker, as shown in the figure, includes a housing 1 and two conductive sheets 2 disposed inside the housing 1, and the two conductive sheets 2 are insulated from each other; one ends of the two conductive sheets 2 extend out from the same side of the housing 1 as the first power connection ends 21 for connecting to the power connection ends on the leakage circuit breaker 01, and the other ends of the two conductive sheets 2 each have two second power connection ends 22, and the two second power connection ends 22 are respectively connected with a first power connection structure for connecting a flexible wire and a second power connection structure for connecting an external conductive insert; a first through hole 11 for inserting the flexible wire is provided at a position corresponding to the first power connection structure on the housing 1, and a second through hole 12 for inserting the external conductive insert is provided at a position corresponding to the second power connection structure on the housing 1. The converter adopts the above structure in this embodiment. The converter is installed at the end of the leakage circuit breaker. Specifically, the first power connection ends 21 of the conductive sheets 2 are inserted into the wiring holes of the power connection ends of the leakage circuit breaker and are connected through the power connection structure (the power connection structure adopts an existing wiring frame assembly) with the wiring holes of the power connection ends of the leakage circuit breaker. And the size of the converter housing outside the leakage circuit breaker is not restricted by the width size of the leakage circuit breaker. Therefore, through holes (the first through hole and the second through hole) with larger aperture sizes and larger - specification power connection structures can be provided on the housing of the converter. Thus, through the conversion of this adapter, the leakage circuit breaker can be used in occasions with a larger load current (above 40A), which is more conducive to the popularization and use of the product. In addition, when wiring externally, according to needs, a flexible wire is connected through the first power connection structure, or / and an external conductive insert (in a metal sheet structure) is connected through the second power connection structure. Thus, the same power connection end of the leakage circuit breaker has two different external wiring methods. In practical applications, power can be connected from the outside in an alternative manner, or both methods can be used for power connection at the same time, which has good practicability.

[0021] In this embodiment, the first power connection structure includes a rectangular frame 3 and a wire pressing screw 4. The rectangular frame 3 is electrically connected to the corresponding second power connection end 22. A threaded perforation is provided on the upper side of the rectangular frame 3, and the wire pressing screw 4 is screwed into the threaded perforation. The upper end of the wire pressing screw 4 has an operating portion 41. Further, a cross-shaped groove or a straight-shaped groove is provided on the upper end surface of the operating portion 41. When wiring, the flexible wire is inserted into the rectangular frame 3 through the first perforation 11, and then the tip of a tool (such as a screwdriver) is inserted into the cross-shaped groove or the straight-shaped groove to rotate the wire pressing screw 4 so that the wire pressing screw 4 moves downward along the axis to press the wire end of the flexible wire against the inner bottom of the rectangular frame 3, realizing the electrical connection between the flexible wire and the rectangular frame 3.

[0022] In this embodiment, the second power connection structure includes a conductive plug spring 5 and a positioning seat 6 sleeved outside the conductive plug spring 5. The conductive plug spring 5 has clamping arms 51 arranged oppositely and a connecting plate 52 connecting the same ends of the two clamping arms 51. The two clamping arms 51 cooperate to clamp the inserted external conductive tab. The positioning seat 6 is a U-shaped structure with a narrow upper part and a wide lower part. The two side walls are correspondingly abutted against the outer sides of the corresponding clamping arms 51, and the bottom wall of the positioning seat 6 is abutted against the outside of the connecting plate 52. The connecting plate 52 is electrically connected to the corresponding second power connection end 22. With the above structure, the positioning seat 6 is provided to increase the clamping force of the conductive plug spring 5, thereby ensuring the reliability of the electrical connection between the conductive plug spring 5 and the external conductive tab.

[0023] In this embodiment, the side end of the connecting plate 52 has a connecting piece 53 electrically connected to the second power connection end, and the electrical connection piece 53 is welded to the corresponding second power connection end 22 to achieve electrical connection.

[0024] In this embodiment, the housing 1 is formed by connecting a first housing 100 and a second housing 101, and the connection method between the two is snap connection or screw connection. During assembly, the components inside the housing are installed on the first housing 100, and then the second housing 101 is covered and fixed to complete the assembly.

[0025] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And these obvious changes or modifications derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims

1. An adapter for a leakage circuit breaker, comprising a housing (1) and two conductive sheets (2) arranged in the housing (1). The two conductive sheets (2) are insulated from each other. It is characterized in that: One end of the two conductive sheets (2) extends from the same side of the housing (1) as the first power connection end (21) connected to the power connection end on the leakage circuit breaker (01). The other ends of the two conductive sheets (2) each have two second power connection ends (22). A first power connection structure for connecting a flexible wire and a second power connection structure for connecting an external conductive insert are respectively connected to the two second power connection ends (22). A first through hole (11) for inserting the flexible wire is provided at a position corresponding to the first power connection structure on the housing (1), and a second through hole (12) for inserting the external conductive insert is provided at a position corresponding to the second power connection structure on the housing (1). The first power connection structure includes a rectangular frame (3) and a pressure screw (4). The rectangular frame (3) is electrically connected to the corresponding second power connection end (22). A threaded through hole is provided on the upper side of the rectangular frame (3), and the pressure screw (4) is screwed in the threaded through hole. An operation part (41) is provided at the upper end of the pressure screw (4). The second power connection structure includes a conductive socket (5) and a positioning seat (6) sleeved outside the conductive socket (5). The conductive socket (5) has clamping arms (51) arranged oppositely and a connecting plate (52) connecting the same ends of the two clamping arms (51). The two clamping arms (51) cooperate to clamp the inserted external conductive insert. The positioning seat (6) is a U-shaped structure with a narrow upper part and a wide lower part. The two side walls are correspondingly abutted against the outer sides of the corresponding clamping arms (51), and the bottom wall of the positioning seat (6) is abutted against the outside of the connecting plate (52). The connecting plate (52) is electrically connected to the corresponding second power connection end (22).

2. The adapter for a residual current circuit breaker according to claim 1, characterized in that: A cross-shaped groove or a straight-shaped groove is provided on the upper end surface of the operation part (41).

3. The adapter for the residual current circuit breaker according to claim 1, characterized in that: The housing (1) is formed by connecting a first housing (100) and a second housing (101).

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