A leakage circuit breaker

Abstract

The present invention discloses a leakage circuit breaker, comprising a circuit breaker unit and a leakage protection module. The leakage protection module has a tripping chain member that is linked with the tripping mechanism of the circuit breaker unit to realize opening and closing of the switch. The circuit breaker unit and the leakage protection module are assembled to realize the linkage between the tripping chain member and the tripping mechanism. The leakage protection module comprises a first assembling part connected to the side wall of the circuit breaker unit and a second assembling part connected to the first terminal of the circuit breaker unit. The first assembling part is provided with a leakage tripping mechanism that cooperates with the tripping chain member, and the second assembling part is provided with a magnetic ring mechanism. The second assembling part slides in the length direction relative to the first assembling part and is provided with a rigid conductive part that is plugged and matched with the first terminal of the circuit breaker unit to realize electrical connection, and a second terminal connected to the rigid conductive part. The present invention is miniaturized and compact in structure and convenient to assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker units, and in particular to a leakage circuit breaker. Background Art

[0002] The existing leakage circuit breaker unit has the characteristics of small size and multiple functions. It is suitable for residential and electrical equipment to protect against ground leakage, direct or indirect electric shock to the human body, system overload, short circuit and other faults.

[0003] The leakage circuit breaker unit includes a circuit breaker unit and a leakage protection module. Usually, the circuit breaker unit and the leakage protection module are spliced ​​side by side. Since multiple first connection terminals are provided at the bottom of the leakage protection module, the overall volume of the leakage circuit breaker unit is large, and the lower connection terminal of the circuit breaker unit needs to be connected to the leakage protection module separately through a wire, which is more troublesome. Summary of the Invention

[0004] The purpose of the present invention is to provide a leakage circuit breaker in order to overcome the shortcomings and deficiencies of the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a leakage circuit breaker, comprising a circuit breaker unit and a leakage protection module, the leakage protection module having a tripping chain piece that is linked with the circuit breaker unit tripping mechanism to realize opening and closing of the switch, the circuit breaker unit and the leakage protection module are assembled to realize the linkage between the tripping chain piece and the tripping mechanism, the leakage protection module comprises a first assembling part connected to the side wall of the circuit breaker unit and a second assembling part connected to the first terminal of the circuit breaker unit, a leakage tripping mechanism that cooperates with the tripping chain piece is provided in the first assembling part, a magnetic ring mechanism is provided in the second assembling part, the second assembling part slides relative to the length direction of the first assembling part and a rigid conductive part that is plugged in and matched with the first terminal of the circuit breaker unit to realize electrical connection and a second terminal connected to the rigid conductive part is provided on the second assembling part.

[0006] As a preferred technical solution of the present invention, the first assembling part and the second assembling part are arranged vertically, and the second assembling part is provided with a slide plate that slides and is confined in the slide groove of the first assembling part. The second assembling part moves relative to the first assembling part and drives the slide plate to slide.

[0007] As a preferred technical solution of the present invention, the first assembly part is provided with a stop assembly for pre-tightening the skateboard on the sliding path of the skateboard. When the skateboard slides to any position, the position is kept fixed under the action of the stop assembly. Under the action of external force, the skateboard overcomes the pre-tightening force of the stop assembly and continues to slide.

[0008] As a preferred technical solution of the present invention, the stop assembly is provided in two groups and is symmetrically arranged on both sides of the skateboard. At least two stop grooves are provided on both sides of the skateboard along the length direction. When the first assembling part and the second assembling part are spliced, the stop assembly cooperates with one of the stop grooves to achieve locking. When the first assembling part and the second assembling part are separated, the skateboard overcomes the pre-tightening force of the stop assembly until the next stop groove cooperates with the stop assembly to achieve locking.

[0009] As a preferred technical solution of the present invention, the stop assembly includes a spring and a stop block installed in the first assembly part. The stop block is pressed against the slide under the action of the spring, and the stop block is provided with a wedge-shaped portion adapted to the shape of the stop groove on the side facing the slide.

[0010] As a preferred technical solution of the present invention, an installation portion is provided in the slide groove and an installation groove is provided on the side of the installation portion facing the slide groove, the spring and the stop block are provided in the installation groove, and a through hole is provided on the side of the stop block opposite to the slide plate, one end of the spring is connected to the inner wall of the installation groove, and the other end of the spring is connected to the through hole.

[0011] As a preferred technical solution of the present invention, a face cover is rotatably provided on the second assembling part, and the face cover has a closed state in contact with the second assembling part and an open state flipped relative to the second assembling part. The circuit breaker unit is provided with a plurality of plug holes corresponding to the first terminal at positions corresponding to the face cover, and the face cover is provided with a plurality of plug parts that are plugged into the plug holes. When the face cover is in the closed state, the plug parts are placed in the plug holes and the face cover is in contact with the circuit breaker unit.

[0012] As a preferred technical solution of the present invention, a locking block is further provided on the face cover, and a locking groove is provided on the second assembly part for plugging and cooperating with the locking block to lock the face cover. The face cover can be unlocked by disengaging the locking block from the locking groove under the action of external force.

[0013] As a preferred technical solution of the present invention, rotation grooves are provided on both sides of the second assembling part, and a rotating part is provided on the face cover at a position corresponding to the rotation groove. A movable hole is provided on the rotating part, and the diameters at both ends of the movable hole are larger than the middle diameter. The rotating groove is provided with a rotating shaft located in the movable hole and adapted to the diameters at both ends of the movable hole; when in a closed state, the face cover is fitted with the second assembling part and the rotating part is completely placed in the rotating groove. At this time, the inner end of the movable hole is rotated to cooperate with the rotating shaft. The face cover can be pulled out to move the outer end of the movable hole to the position of the rotating shaft to flip the face cover to achieve switching between the closed state and the open state.

[0014] As a preferred technical solution of the present invention, a limiting protrusion is provided in the rotating groove below the rotating shaft. When the cover is flipped to 90°, the limiting protrusion enters the inner end of the movable hole to fix the position of the cover relative to the second rotating part after flipping.

[0015] To sum up, the beneficial effects of the present invention are as follows: the leakage protection module includes a first assembling part and a second assembling part. After the second assembling part is assembled with the circuit breaker unit, the rigid conductive part is plugged into the first terminal of the circuit breaker unit to achieve conduction, which eliminates the wiring steps and makes assembly more convenient. In addition, the second terminal of the leakage protection module is arranged below the circuit breaker unit, which rationally utilizes the lower space of the circuit breaker unit. Compared with the original leakage circuit breaker, the size is small and the overall structure is more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the leakage circuit breaker of the present invention when the cover is closed;

[0017] Figure 2 This is a structural diagram of the leakage circuit breaker of the present invention when the cover is pulled out;

[0018] Figure 3 This is a structural diagram of the leakage circuit breaker of the present invention with the cover open;

[0019] Figure 4 This Figure 3 Enlarged view of part A;

[0020] Figure 5 It is a structural schematic diagram of the present invention;

[0021] Figure 6 It is a structural diagram of the leakage protection module in the present invention;

[0022] Figure 7 It is a structural diagram of the leakage protection module in the present invention;

[0023] Figure 8 yes Figure 7 Enlarged view of part B.

[0024] Figure numerals: 1. Circuit breaker unit; 2. Leakage protection module; 3. Tripping interlocking part; 4. Tripping mechanism; 5. First assembly part; 6. Second assembly part; 7. Rigid conductive part; 8. Second terminal; 9. Slide plate; 10. Stop assembly; 11. Stop groove; 12. Slide groove; 13. Spring; 14. Stop block; 15. Wedge-shaped part; 16. Mounting groove; 17. Through hole; 18. Surface cover; 19. Plug-in hole; 20. Plug-in part; 21. Rotating groove; 22. Rotating part; 23. Rotating shaft; 24. Limiting protrusion; 25. Movable hole; 26. First terminal; 27. Magnetic ring mechanism; 28. Leakage tripping mechanism; 29. ​​Locking block; 30. Locking groove. Implementation Method

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without making any creative work are all within the scope of protection of the present invention.

[0026] Specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0027] like Figures 1 to 8 The leakage circuit breaker shown in the figure includes a circuit breaker unit 1 and a leakage protection module 2. The leakage protection module 2 has a tripping chain 3 that is linked with the tripping mechanism 4 of the circuit breaker unit 1 to realize opening and closing. The circuit breaker unit 1 and the leakage protection module 2 are assembled to realize the linkage between the tripping chain 3 and the tripping mechanism 4. The leakage protection module 2 includes a first assembly part 5 connected to the side wall of the circuit breaker unit 1 and a second assembly part 6 connected to the first terminal 26 of the circuit breaker unit 1. The first assembly part 6 is provided with a leakage tripping mechanism 28 that cooperates with the tripping chain 3. The second assembly part 6 is provided with a leakage tripping mechanism 28 that cooperates with the tripping chain 3. A magnetic ring mechanism 27 is provided in the assembly part 6, the second assembly part 6 slides in the length direction relative to the first assembly part 5, and the second assembly part 6 is provided with a rigid conductive part 7 that is plugged into and matched with the first terminal 26 of the circuit breaker unit 1 to achieve electrical connection, and a second terminal 8 connected to the rigid conductive part 7. In this embodiment, the internal structure of the circuit breaker unit 1 and the leakage protection module 2 is the existing technology, which is not the main improvement point of the present invention, so it is not specifically described; the magnetic ring mechanism 27 and the leakage tripping mechanism 28 are the existing technology, which is not the main improvement point of the present invention, so they are not specifically described.

[0028] The leakage protection module 2 includes a first assembling part 5 and a second assembling part 6. After the second assembling part 6 is assembled with the circuit breaker unit 1, the rigid conductive part 7 is plugged into the first terminal 26 of the circuit breaker unit 1 to achieve conduction, eliminating the wiring steps and making assembly more convenient. In addition, the second terminal 8 of the leakage protection module 2 is arranged below the circuit breaker unit 1, which rationally utilizes the lower space of the circuit breaker unit 1. Compared with the original leakage circuit breaker, it has a small size and a more compact overall structure. Specifically, in this application, the magnetic ring mechanism 27, the second terminal 8 and the control circuit board are arranged in the second assembling part 6, and the remaining components are arranged in the first assembling part 5, which greatly reduces the volume of the first assembling part 5, rationally utilizes the bottom area of ​​the circuit breaker unit 1, and is more compact as a whole.

[0029] The first assembling part 5 and the second assembling part 6 are arranged vertically. The second assembling part 6 is provided with a slide plate 9 which slides and is confined in the slide groove 12 of the first assembling part 5. The second assembling part 6 moves relative to the first assembling part 5 and drives the slide plate 9 to slide.

[0030] The first assembly part 5 is provided with a stop assembly 10 for pre-tightening the skateboard 9 on the sliding path of the skateboard 9. When the skateboard 9 slides to any position, it remains in a fixed position under the action of the stop assembly 10. Under the action of external force, the skateboard 9 overcomes the pre-tightening force of the stop assembly 10 and continues to slide. In this embodiment, the stop assembly 10 is preferably provided in two groups and is symmetrically arranged on both sides of the skateboard 9.

[0031] At least two stop grooves 11 are provided on the side wall of the slide plate 9 along the length direction. When the first assembling part 5 and the second assembling part 6 are in the assembled state, the stop assembly 10 cooperates with one of the stop grooves 11 to achieve locking. When the first assembling part 5 and the second assembling part 6 are separated, the slide plate 9 overcomes the pre-tightening force of the stop assembly 10 until the next stop groove 11 cooperates with the stop assembly 10 to achieve locking.

[0032] Since a rigid conductive part 7 is provided on the second assembling part 6, in order to facilitate assembly, a pull-out structure is provided on the first assembling part 5 and the second assembling part 6, and the two can move relative to each other. Before installation, the second assembling part 6 needs to be pulled out in advance, and the tripping chain 3 of the first assembling part 5 is aligned with the side wall of the circuit breaker unit 1 and inserted to realize the linkage between the two (a plurality of plug-ins can be optionally provided on the first assembling part 5 to be plugged into the slots on the side wall of the circuit breaker unit 1, not shown in the figure), and then the second assembling part 6 is pushed back toward the first assembling part 5 (a plurality of plug-ins can be optionally provided on the second assembling part 6 to be plugged into the slots at the bottom of the circuit breaker unit 1, not shown in the figure), thereby completing the installation of the second assembling part 6.

[0033] The stop assembly 10 includes a spring 13 and a stop block 14 installed in the first assembly part 5. The stop block 14 is pressed against the slide 9 under the action of the spring 13. The stop block 14 is provided with a wedge-shaped portion 15 that is adapted to the shape of the stop groove 11 on the side facing the slide 9. When the slide 9 moves to different positions (that is, when the stop groove 11 of the slide 9 moves to the position of the stop block 14), the stop block 14 enters the stop groove 11 under the action of the spring 13, preventing the slide 9 from moving easily after being pulled out, thereby facilitating subsequent assembly.

[0034] An installation portion is provided in the slide groove 12 and an installation groove 16 is provided on the side of the installation portion facing the slide groove 12. The spring 13 and the stop block 14 are provided in the installation groove 16. A through hole 17 is provided on the side of the stop block 14 opposite to the slide plate 9. One end of the spring 13 is connected to the inner wall of the installation groove 16, and the other end of the spring 13 is connected to the through hole 17.

[0035] A detachable cover 18 is rotatably provided on the second assembling part 6 (the rotating part 22 can be separated from the rotating groove 21 by external force). The cover 18 has a closed state in contact with the second assembling part 6 and an open state flipped relative to the second assembling part 6. The circuit breaker unit 1 is provided with a plurality of plug holes 19 corresponding to the first terminal 26 of the cover 18. The cover 18 is provided with a plurality of plug parts 20 that are plugged into the plug holes 19. When the cover 18 is in the closed state, the plug parts 20 are placed in the plug holes 19 and the cover 18 is in contact with the circuit breaker unit 1.

[0036] When the cover 18 is in the closed state, the plug hole 19 and the plug part 20 cooperate to make the installation of the leakage protection module 2 more stable and have an anti-pull effect. Moreover, when the cover 18 is closed, it can ensure the overall beauty and have a protective effect, avoiding contact with rigid or flexible conductive parts to cause unnecessary safety hazards.

[0037] The face cover 18 is also provided with a locking block 29, and the second assembly part 6 is provided with a locking groove 30 that is plugged into and cooperates with the locking block 29 to lock the face cover. The face cover 18 can be unlocked by disengaging the locking block 29 from the locking groove 30 under the action of external force. The locking block 29 and the locking groove 30 in this embodiment are preferably square, but can also be other geometric shapes.

[0038] The second assembling part 6 is provided with a rotation groove 21 on both sides, and the surface cover 18 is provided with a rotating part 22 at the position of the rotation groove 21. The rotating part 22 is provided with a movable hole 25 and the diameters of the two ends of the movable hole 25 are larger than the middle diameter. The rotating groove 21 is provided with a rotating shaft 23 located in the movable hole 25 and adapted to the diameters of the two ends of the movable hole 25; when in the closed state, the surface cover 18 is fitted with the second assembling part 6 and the rotating part 22 is completely placed in the rotating groove 21. At this time, the inner end of the movable hole 25 is rotated with the rotating shaft 23. The surface cover 18 is pulled out so that the outer end of the movable hole 25 is moved to the position of the rotating shaft 23 to flip the surface cover 18 to achieve switching between the closed state and the open state of the surface cover 18. In this embodiment, the inner and outer ends of the movable hole 25, i.e., the two ends of the movable hole 25, the diameter of the rotating shaft 23 is larger than the diameter of the middle channel of the movable hole 25, and the surface cover 18 is made of plastic material.

[0039] A limiting protrusion 24 is provided in the rotating groove 21 below the rotating shaft 23. When the cover 18 is flipped to 90°, the limiting protrusion 24 enters the inner end of the movable hole 25, so that the cover 18 is fixed relative to the second rotating part 22 after flipping, which is convenient for wiring the second terminal 8. Of course, the cover 18 can also be directly removed.

[0040] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention as claimed, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage circuit breaker, comprising a circuit breaker unit and a leakage protection module, wherein the leakage protection module has a tripping chain member that is linked with a tripping mechanism of the circuit breaker unit to realize opening and closing of the circuit breaker, wherein the circuit breaker unit and the leakage protection module are assembled to realize the linkage between the tripping chain member and the tripping mechanism, characterized in that: The leakage protection module includes a first assembly portion connected to the side wall of the circuit breaker unit and a second assembly portion connected to the first terminal of the circuit breaker unit, the first assembly portion is provided with a leakage tripping mechanism that cooperates with the tripping chain member, the second assembly portion is provided with a magnetic ring mechanism, the second assembly portion slides relative to the length direction of the first assembly portion, and the second assembly portion is provided with a rigid conductive member that plugs and cooperates with the first terminal of the circuit breaker unit to achieve electrical connection, and a second terminal connected to the rigid conductive member; The first assembling part and the second assembling part are arranged vertically, and the second assembling part is provided with a slide plate which slides and is limited in the slide groove of the first assembling part, and the second assembling part moves relative to the first assembling part and drives the slide plate to slide; The first assembly portion is provided with a stop assembly for pre-tightening the slide on the slide path. When the slide slides to any position, the position is kept fixed by the stop assembly. Under the action of external force, the slide overcomes the pre-tightening force of the stop assembly and continues to slide. The stop assembly is provided with two groups and is symmetrically arranged on both sides of the slide. At least two stop grooves are provided on both sides of the slide along the length direction. When the first assembling part and the second assembling part are in the spliced ​​state, the stop assembly cooperates with one of the stop grooves to achieve locking. When the first assembling part and the second assembling part are separated, the slide overcomes the pre-tightening force of the stop assembly until the next stop groove cooperates with the stop assembly to achieve locking; A face cover is rotatably provided on the second assembling part, and the face cover has a closed state in contact with the second assembling part and an open state flipped relative to the second assembling part. The circuit breaker unit is provided with a plurality of plug holes corresponding to the first terminal at positions corresponding to the face cover, and the face cover is provided with a plurality of plug parts that are plugged into the plug holes. When the face cover is in the closed state, the plug parts are placed in the plug holes and the face cover is in contact with the circuit breaker unit.

2. The leakage circuit breaker according to claim 1, characterized in that: The stop assembly includes a spring and a stop block installed in the first assembly part. The stop block is pressed against the slide plate under the action of the spring. The stop block is provided with a wedge-shaped portion adapted to the shape of the stop groove on the side facing the slide plate.

3. The leakage circuit breaker according to claim 2, characterized in that: An installation portion is provided in the slide groove, and an installation groove is provided on the side of the installation portion facing the slide groove. The spring and the stop block are provided in the installation groove. A through hole is provided on the side of the stop block opposite to the slide plate. One end of the spring is connected to the inner wall of the installation groove, and the other end of the spring is connected to the through hole.

4. The leakage circuit breaker according to claim 1, characterized in that: The face cover is also provided with a locking block, and the second assembling portion is provided with a locking groove that plugs and cooperates with the locking block to lock the face cover. The face cover can be unlocked by disengaging the locking block from the locking groove under the action of external force.

5. The leakage circuit breaker according to claim 1 or 4, characterized in that: Rotation grooves are provided on both sides of the second assembling part, and a rotating part is provided on the face cover at a position corresponding to the rotation groove. A movable hole is opened on the rotating part, and the diameters at both ends of the movable hole are larger than the middle diameter. The rotating groove is provided with a rotating shaft located in the movable hole and adapted to the diameters at both ends of the movable hole. When in a closed state, the face cover is fitted with the second assembling part and the rotating part is completely placed in the rotating groove. At this time, the inner end of the movable hole is rotated to cooperate with the rotating shaft. The face cover can be pulled out to move the outer end of the movable hole to the position of the rotating shaft to flip the face cover to realize the switching of the closed state and the open state of the face cover.

6. The leakage circuit breaker according to claim 5, characterized in that: A limiting protrusion is provided in the rotating groove and is located below the rotating shaft. When the cover is turned over to 90 degrees, the limiting protrusion enters the inner end of the movable hole so that the cover is fixed relative to the second rotating part after turning over.

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