TWM551746U - Leakage circuit breaker - Google Patents

Description

Leakage circuit breakers

The utility model relates to an earth leakage circuit breaker, in particular to an earth leakage circuit breaker with three functions of preventing leakage, preventing overload and preventing short circuit.

Leakage circuit breaker is a device used in indoor space, such as a home, to cut off the circuit by detecting leakage or overload of the circuit to protect the user from electric shock or fire; common hazard safety The factors are leakage, overload and short circuit. However, among the existing leakage circuit breakers, the leakage circuit breakers with small volume and no space occupy most of them only design protection functions for one or two cases, and fail to take into account both leakage and overload. The protection against short circuit is relatively limited in practicality; further, the leakage circuit breaker with three functions of protection against leakage, overload and short circuit is too bulky, and takes up more space during installation, which is relatively inconvenient and reduces installation. In short of the above, the existing leakage circuit breaker does have some improvement.

The novel utilizes the thermal effect and magnetic effect of the current, and achieves the effects of protecting against leakage, overload and short-circuit hazard factors in a limited volume by precise spatial configuration, further illustrated as follows.

The present invention relates to a leakage circuit breaker, which comprises a base, a circuit breaker module and a fault detection module, wherein: the base comprises a main bracket, two conductive sheets and a circuit board, wherein the two conductive sheets are respectively The circuit board is disposed on the base and is provided with a coil; the circuit breaker module is disposed on the main bracket of the base and connected to the two conductive sheets; and the detecting The wrong module is coupled to the base and connected to the circuit breaker module. The debug module includes a connecting member, two bimetal pieces, two pushing members and a sliding member, wherein the connecting member is pivotally connected to the The main bracket is connected to the disconnecting module, and the two bimetal strips are respectively fixed at one end to the two sides of the base relative to the main bracket and can be bent against the connecting member, and the two pushing members are respectively movable Connecting the two bimetals to one end of the base, and respectively providing a push rod to abut the connecting member when the two pushing members move in the direction of the connecting member, the sliding member is slidably disposed on the The center of the coil and the connector Access.

Further, in the above-mentioned earth leakage circuit breaker, the sliding member is fastened with a hook portion and a card groove recessed downward from the top of the connecting member.

Further, in the above-mentioned earth leakage circuit breaker, wherein the connecting member and the two bimetal pieces abut against each other, an overload screw is provided, and the two pieces of bimetal are deformed by different bending deformations by adjusting the overload screw. Abut against the overload screw.

Further, the above-mentioned leakage circuit breaker, wherein the leakage circuit breaker according to claim 1, wherein the error detection module comprises two yokes and two spring clips, the two yokes being respectively fixed to the two bimetals The two spring clips are respectively fixed to the two yokes, and are provided with a spring piece connected to the two pushing members, so that the two pieces of bimetal are respectively interposed between the two pushing pieces and the Between two yokes.

Preferably, in the above-mentioned earth leakage circuit breaker, the circuit breaking module includes a switch, a locking component and a follower, wherein the opening relationship is pivotally connected to the main bracket and connected by a pivoting member. The locking member is configured to move up and down as the switch rotates, and the locking member is at a lowest point, and the two ends respectively abut the connecting member of the driven member and the debugging module, The follower member has a top portion abutting the latching member and a reset member interposed between the follower member and the base, and the follower member respectively connects the two conductive sheets on both sides.

Under normal power usage conditions, the current will flow through the two conductive sheets and the two bimetals in sequence, and when leakage occurs, current will enter the coil of the circuit board to induce The magnetic field causes the sliding member to be attracted to drive the connecting member to swing, so that the locking member loses support and activates the breaking module to form an open circuit; when the overload occurs, the two bimetals are heated by the thermal effect of the current Deformation, and then the two overload screws abut against the connecting member to swing, thereby starting the circuit breaking module to form an open circuit; when a short circuit occurs, the current flowing through the two bimetal pieces is rapidly increased, so that the two An inductive magnetic field is generated between the bimetal and the two pushing members, and the two pushing members are moved in the direction of the connecting member to push the connecting member with the push rod, thereby starting the breaking module to form an open circuit.

According to the above technical feature, the present invention is provided with the connecting member for starting the breaking module between the main bracket and the circuit board, and is provided with anti-overload and anti-overflow on the current transmission path on both sides of the main bracket. The short-circuiting device, such as the two bimetals and the two pushing members, and the sliding member for preventing leakage is disposed between the connecting member and the circuit board and slidable in the coil, so that the space is so precise The utility model realizes three functions of preventing leakage, overload and short circuit at the same time, effectively improving the defects of the existing leakage circuit breaker which is bulky and cannot simultaneously have three functions, and can improve the utilization efficiency of the indoor space when the user assembles the line.

In order to be able to understand the technical features and practical effects of the present invention in detail and can be implemented in accordance with the contents of the specification, the following further describes the preferred embodiments as illustrated in the following:

The present invention is a leakage circuit breaker. The preferred embodiment is shown in FIGS. 1 to 4, and includes a base 10, a circuit breaker module 20, a debug module 30, and a top cover 40, wherein:

The base 10 is a rectangular base and includes two input ends 101 and two output ends 102. The two input ends 101 are spaced apart from one end of the two long sides of the base 10, and the input ends 101 are facing the two output ends. The base 10 is further disposed with a main bracket 11 , two conductive sheets 12 and a circuit board 13 , wherein the main The bracket 11 is vertically disposed between the two input ends 101 and the two output ends 102. The side wall of the main bracket 11 is provided with a guiding slot 111. The two conductive sheets 12 are respectively fixed at one end. The base 10 is opposite to the two sides of the main bracket 11 , and each of the guide pads 12 is movably abutted against the contact of one of the input ends 101 at the other end. The circuit board 13 is vertically disposed on the base 10 . And between the main support 11 and the two output ends 102, and a coil 131 is disposed near the top of the circuit board 13. As shown in FIG. 4, a slot 132 is disposed at the center of the coil 131.

The circuit breaker module 20 is coupled to the base 10 and includes a switch 21, a latching member 22, a pivoting member 23, a follower member 24, and a reset member 25. The switch 21 is a central hole. The 211 is pivotally connected to the top end of the main bracket 11 to rotate the switch 21 relative to the main bracket 11; the locking member 22 is connected to the switch 21 at an intermediate portion and to the guiding slot 111 of the main bracket 11 Corresponding to the position, a fastening portion 221 is disposed on a side of the locking member 22 adjacent to the circuit board 13.

The two ends of the pivoting member 23 are pivotally connected to the locking member 22, and the pivoting end of the pivoting member 23 and the latching member 22 extend into the guiding slot 111 of the main bracket 11. When the switch 21 is pulled to rotate relative to the main bracket 11, the locking member 22 is driven by the pivoting member 23 to move up and down along the guiding slot 111; the follower 24 is transmitted through the guiding member The reset member 25 is disposed to be movable up and down between the base 10 and the two input ends 101 of the base 10, and the intermediate position of the top of the follower 24 is away from the lock member 22 One end of the engaging portion 221 abuts, and the retaining member 24 is recessed inwardly from the opposite outer sides to define a position of the two conductive strips 12, and the follower 24 is on the upper side. The two conductive sheets 12 are pulled when moving down.

The debugging module 30 includes a connecting member 31, two bimetal sheets 32, two yokes 33, two spring clips 34, two pushing members 35, and a sliding member 36. The connecting member 31 is a Y-shaped member. The frame body and the bottom portion thereof are pivotally connected to the main bracket 11 so that the connecting member 31 can swing relative to the main bracket 11 in the direction of the circuit board 13. The connecting member 31 is provided with a latching surface 311 and two overload screws 312. And a card slot 313, wherein the latching surface 311 is disposed on the side of the connecting member 31 adjacent to the main bracket 11 and abuts against the engaging portion 222 of the locking member 22, and the two overloads The screws 312 are respectively disposed at the two ends of the top of the connecting member 31. The card slot 313 is formed by the middle portion of the top of the connecting member 31 and is recessed downwardly between the locking plane 311 and the two overload screws 312. between.

The two bimetal strips 32 are respectively fixed at one end to one end of the two conductive sheets 12 and the base 10, and the two bimetal strips 32 are respectively connected to the two overload screws 312 of the connecting member 31 at the other end. Abutting and electrically connecting the two output ends 102 through a line in the middle section, each of the bimetals 32 is made of two kinds of metals. Due to different expansion coefficients, the two metals may have inconsistent elongation when heated. Further, the bimetal 32 is bent, and the two overload screws 312 are further pushed to swing the coupling member 31 relative to the main bracket 11.

The two yokes 33 are respectively vertically fixed to the two bimetal strips 32 and one end of the two conductive strips 12 and the base 10, and the left and right sides of each yoke 33 are respectively oppositely provided with a bump 331; The two spring clips 34 are respectively coupled with the two yokes 33 and are provided with a bottom plate 341, two side plates 342 and a spring piece 343. The two side plates 342 are respectively disposed at two ends of the bottom plate 341, and the two side plates 342 are opposite to each other. A hole 344 is disposed in each of the positions, and each of the spring clips 34 is respectively coupled to the two protrusions 331 of the yoke 33 through the holes 344 of the two side plates 342. The spring piece 343 is disposed on the bottom plate 341 and Between the two side plates 342.

The two pushing members 35 are respectively movably disposed on the bottom plate 341 of the two spring clips 34, and each pushing member 35 is provided with a concave surface 351 and a push rod 352, wherein the inner concave surface 351 is fastened to the pushing member 35 is adjacent to one side of the connecting member 31 and fixed to the spring piece 343 adjacent to the spring clip 34, so that the two pushing members 35 can respectively be displaced relative to the two spring clips 34 through the two spring pieces 343, the push rod 352 The pushing member 35 is disposed on a side of the main bracket 11 and extends toward the connecting member 31. When the two pushing members 35 move in the direction of the connecting member 31, the two push rods 352 push the connecting rod. The member 31 swings the connecting member 31 relative to the main bracket 11; as shown in FIG. 3 and FIG. 4, the sliding member 36 is slidably disposed in the sliding slot 132 at the center of the coil 131 and interposed between the board 13 Between the connecting member 31 and the connecting member 31, a hook portion 361 is disposed at an end of the connecting member 31, so as to be engaged with the slot 313 of the connecting member 31, so that the sliding member 36 is in the sliding slot 132. When moving inward, the link 31 will swing relative to the main bracket 11.

The top cover 40 is coupled to the base 10 and is provided with an opening 41 for the switch 21 to extend outward.

Referring to FIG. 4 and FIG. 5, when the user turns the switch 21 to the starting position to turn on the leakage circuit breaker, the locking member 22 is pulled by the pivoting member 23 along the guiding slot. 111 moves to the lowest position, further presses the follower 24 to compress the reset member 25, and fixes the follower 24 by the engaging portion 222 abutting against the buckle plane 311. Further, the The two conductive sheets 12 are pressed by the follower 24 to be connected to the two input terminals 101. Current flows from the two input terminals 101 into the earth leakage circuit breaker, and the two conductive sheets 12 are transmitted through the two conductive sheets. The chip 32 is electrically connected to the circuit board 13 and then outputted outwardly from the two output terminals 102.

The operation flow of the present invention is as shown in FIG. 6. Since the debugging module 30 has three functions of preventing leakage, preventing overload, and preventing short circuit, the following describes the different functions in order:

Referring to FIG. 4 and FIG. 7, when a leakage occurs, current will enter the coil 13 to generate an induced magnetic field, causing the slider 36 to be attracted to move toward the circuit board 13, and because of the sliding The hook portion 361 of the member 36 is engaged with the slot 313 of the connecting member 31. When the slider 36 moves in the direction of the circuit board 13, the connecting member 31 is pulled to make the connecting member 31 face the same. The main bracket 11 swings in the direction of the circuit board 13, the locking member 22 loses support, and the reset member 25 abuts the follower 24 upward, and the two conductive sheets 12 are lifted up by the follower 24. The contacts that are separated from the two input terminals 101 form an open circuit.

Referring to FIG. 5 and FIG. 8 , when an overload occurs, the two bimetal strips 32 are gradually bent and deformed due to an increase in temperature due to an increase in current, and the two overload screws 312 are further pushed. The connecting member 31 is oscillated in the direction of the circuit board 13 relative to the main bracket 11, and the two conductive sheets 12 are further lifted by the follower member 24 to be separated from the contacts of the two input ends 101 to form an open circuit. If the positions of the two overload screws 312 are adjusted, the two pieces of the bimetal 32 must be biased against the two overload screws 312 by different bending deformations, so that the connecting member 31 swings to form an open circuit, which can be used by the user. Adjust the overload setting range of the leakage circuit breaker.

Referring to FIG. 5 and FIG. 9, when a short circuit occurs, the current flowing through the two bimetal strips 32 rises sharply, causing an induced magnetic field near the two bimetal strips 32 to attract the two pushes. The two pushing members 35 are moved in the direction of the circuit board 13 to push the connecting members 13 in the same direction, so that the two conductive sheets 12 are lifted upward by the follower 24 away from the two input ends 101. The joints form an open circuit.

According to the above technical feature, the connecting member 31 for starting the breaking module 20 between the main bracket 11 and the circuit board 13 is provided, and the current transmission path on both sides of the main bracket 11 is provided. The device for providing an anti-overload and anti-short circuit, such as the two bimetals 32 and the two pushing members 35, and the sliding member 36 for preventing leakage is disposed between the connecting member 31 and the circuit board 13, and Sliding in the sliding slot 132 of the coil 131, the three functions of protecting against leakage, overload and short circuit are simultaneously achieved by such a precise space configuration, thereby effectively improving the disadvantages of the existing leakage circuit breaker being bulky and capable of simultaneously having three functions, and can be improved. The efficiency of the use of indoor space when the user assembles the line.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art may use the present invention without departing from the scope of the present invention. Equivalent embodiments of the various changes or modifications made by the disclosed technical content, and without departing from the technical solutions of the present invention, are still within the scope of the technical solutions of the present invention.

10‧‧‧Base
101‧‧‧ input
102‧‧‧output
11‧‧‧Main bracket
111‧‧‧ Guide slot
12‧‧‧Conductor
13‧‧‧Circuit board
131‧‧‧ coil
132‧‧‧Chute
20‧‧‧Disconnect Module
21‧‧‧ switch
211‧‧‧ center hole
22‧‧‧Locks
221‧‧‧Deduction Department
23‧‧‧ pivotal parts
24‧‧‧ Followers
241‧‧‧Limited slot
25‧‧‧Reset parts
30‧‧‧Detection Module
31‧‧‧Links
311‧‧‧Snap plane
312‧‧‧Overload screw
313‧‧‧ card slot
32‧‧‧ bimetal
33‧‧‧Y yoke
331‧‧‧Bumps
34‧‧ ‧ spring clip
341‧‧‧floor
342‧‧‧ side panels
343‧‧ ‧ spring piece
344‧‧‧ hole
35‧‧‧Promoters
351‧‧‧ concave surface
352‧‧‧Put
36‧‧‧Sliding parts
361‧‧‧K hook section
40‧‧‧Top cover
41‧‧‧ openings

1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is a partial exploded perspective view of the preferred embodiment of the present invention. Figure 3 is a further exploded perspective view of the preferred embodiment of the present invention. Figure 4 is a partial cross-sectional side view of the preferred embodiment of the present invention. Figure 5 is another partial cross-sectional side view of the preferred embodiment of the present invention. Figure 6 is a block diagram showing the operation of the preferred embodiment of the present invention. Figure 7 is a partial cross-sectional side view of a first mode of operation of the preferred embodiment of the present invention. Figure 8 is a partial cross-sectional side view of a second mode of operation of the preferred embodiment of the present invention. Figure 9 is a partial cross-sectional side view of a third mode of operation of the preferred embodiment of the present invention.

10‧‧‧Base

101‧‧‧ input

102‧‧‧output

11‧‧‧Main bracket

12‧‧‧Conductor

13‧‧‧Circuit board

131‧‧‧ coil

20‧‧‧Detection Module

21‧‧‧ switch

30‧‧‧Disconnect Module

32‧‧‧ bimetal

34‧‧ ‧ spring clip

35‧‧‧Promoters

40‧‧‧Top cover

41‧‧‧ openings

Claims (7)

An earth leakage circuit breaker includes: a base comprising a main bracket, two conductive sheets, and a circuit board, wherein the two conductive sheets are respectively disposed on opposite sides of the base relative to the main bracket, the circuit board Provided on the base and provided with a coil; a circuit breaker module coupled to the main bracket of the base and connected to the two conductive sheets; and a debug module coupled to the base and connected to the circuit The module is connected to the circuit module, and the circuit module is pivotally connected to the main frame and connected to the circuit breaker module. Two pieces of bimetal are respectively fixed at one end to the two sides of the base relative to the main bracket and can be bent against the connecting member, and the two pushing members respectively movably couple the two bimetals to the base And a push rod is respectively arranged to abut against the connecting member when the two pushing members move in the direction of the connecting member, and the sliding member is slidably disposed at a center of the coil and connected to the connecting member. The earth leakage circuit breaker of claim 1, wherein the sliding member is fastened by a hook portion to a card slot recessed downwardly from the top of the connecting member. The earth leakage circuit breaker according to claim 1 or 2, wherein an overload screw is respectively disposed at a portion where the connecting member abuts the two bimetal sheets. The earth leakage circuit breaker of claim 3, wherein the error detection module comprises two yokes and two spring clips, the two yokes being respectively fixed at positions where the two bimetals are fixed to the base, the two springs The clips are respectively fixed to the two yokes, and a spring piece connected to the two pushing members is disposed, so that the two bimetal pieces are respectively interposed between the two pushing pieces and the two yokes. The earth leakage circuit breaker of claim 4, wherein the circuit breaker module comprises a switch, a latching member and a follower member, wherein the open relationship is pivotally connected to the main bracket and connected by a pivoting member The locking member is configured to move up and down as the switch rotates, and the locking member is at a lowest point, and the two ends respectively abut the connecting member of the driven member and the debugging module, The follower member has a top portion abutting the latching member and a reset member interposed between the follower member and the base, and the follower member respectively connects the two conductive sheets on both sides. The earth leakage circuit breaker of claim 1, wherein the error detection module comprises two yokes and two spring clips, the two yokes being respectively fixed at positions where the two bimetals are fixed to the base, the two springs The clips are respectively fixed to the two yokes, and a spring piece connected to the two pushing members is disposed, so that the two bimetal pieces are respectively interposed between the two pushing pieces and the two yokes. The earth leakage circuit breaker of claim 1, wherein the circuit breaker module comprises a switch, a locking component and a follower, wherein the opening relationship is pivotally connected to the main bracket and connected by a pivoting member. The locking member is configured to move up and down as the switch rotates, and the locking member is at a lowest point, and the two ends respectively abut the connecting member of the driven member and the debugging module, The follower member has a top portion abutting the latching member and a reset member interposed between the follower member and the base, and the follower member respectively connects the two conductive sheets on both sides.