CN210429712U

CN210429712U - Electronic leakage circuit breaker

Info

Publication number: CN210429712U
Application number: CN201921621270.9U
Authority: CN
Inventors: 旷荣昌; 王晋; 胡德
Original assignee: Wenzhou Aike Electric Appliance Technology Co ltd
Current assignee: Wenzhou Aike Electric Appliance Technology Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-04-28
Anticipated expiration: 2029-09-26

Abstract

The utility model relates to a technical field of residual current circuit breaker discloses an electronic type residual current circuit breaker, and its technical scheme main points include circuit breaker body, upper cover and base, the both sides of circuit breaker body are equipped with a plurality of binding post respectively, adjacent two binding post is the crisscross distribution of height, be equipped with a plurality of wiring holes that correspond with each binding post position respectively on the base, outside wire by the wiring hole penetrates and links to each other with binding post in the base. The utility model discloses have the effect that occupation space is little, practice thrift the space.

Description

Electronic leakage circuit breaker

Technical Field

The utility model relates to a residual current circuit breaker's technical field, more specifically says that it relates to an electronic type residual current circuit breaker.

Background

The electronic leakage circuit breaker mainly comprises a zero sequence current transformer, an electronic control leakage release and a circuit breaker with overload and short-circuit protection. When the leakage current or the human body is in electric shock in the protected circuit, as long as the leakage current reaches the designed and selected action current value, the secondary winding of the zero sequence current transformer outputs a signal, and the breaker is actuated through the leakage tripping device, so that the power supply is cut off to play the roles of leakage and electric shock protection.

At present, chinese patent with publication number CN107946153A discloses an electric leakage circuit breaker, which comprises a circuit breaker part, an electric leakage part, an upper cover, a base and a separation shell, wherein four wiring terminals are arranged on both sides of the circuit breaker part and the electric leakage part, a socket for inserting an external wire connected with the wiring terminals is arranged on the separation shell, and the height of each wiring terminal is flush.

When the wiring terminals in the residual current circuit breaker are externally connected with the conducting wire and conducted, in order to ensure enough electric gaps to avoid breakdown, the distance between every two adjacent wiring terminals is larger than the safe breakdown distance. However, in the above-mentioned earth leakage circuit breaker, four connection terminals are distributed in parallel, and the heights of two adjacent connection terminals are equal, so that the whole width of the earth leakage circuit breaker is large, the occupied space is large, and especially in the times of poor and deficient space resources, the earth leakage circuit breaker wastes space when being installed or stored, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a quadrupole electronic leakage circuit breaker, have the effect that occupation space is little, practice thrift the space.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an electronic type residual current circuit breaker, includes circuit breaker body, upper cover and base, the both sides of circuit breaker body are equipped with a plurality of binding post respectively, adjacent two binding post is the crisscross distribution of height, be equipped with a plurality of wiring holes that correspond with each binding post position respectively on the base, outside wire by the wiring hole penetrates in the base and links to each other with binding post.

Through adopting above-mentioned technical scheme, two adjacent binding post are the height and crisscross, compare in the mode of horizontal distribution under the condition that linear distance equals, the horizontal distance reduces greatly, and the holistic width of leakage circuit breaker can reduce greatly, has the effect of practicing thrift the space. In addition, if the wiring terminals are distributed in parallel, the width of two adjacent electrodes is small, and the electric clearance between a fastener for fixing an external lead in the wiring terminal and the wiring board of the two electrodes is not enough, so that the breakdown phenomenon is easy to occur; when the external lead is connected, if the external lead is not well arranged, the external lead is easy to be lapped to cause short circuit, and the potential safety hazard is large. Therefore, the staggered distribution of the terminals also has the effect of facilitating the distribution of the external wires and the fasteners for fixing the external wires.

The utility model discloses further set up to: binding post stretches into the wiring board of wiring frame and with the last lateral wall threaded connection's of wiring frame movable bolt including the wiring frame, the one end that slide setting is in the base, movable bolt's tip is located the upside of wiring board, cover on and be equipped with a plurality of through-holes that are located each binding post directly over respectively.

By adopting the technical scheme, when the external lead is connected, the external lead is stretched into the gap formed by the lower inner wall of the wiring frame and the wiring board, and then the screwdriver matched with the head of the movable bolt penetrates through the through hole and then rotates the movable bolt, so that the wiring frame moves upwards relative to the wiring board, the gap between the lower inner wall of the wiring frame and the wiring board is reduced, and the external lead is compressed. The traditional lead positioning mode is that a movable bolt is used for directly extruding an external lead, so that the stress area of the lead is small; the positioning mode presses the lead between the wiring board and the wiring frame, so that the stress area of the lead is large, and the positioning effect is good.

The utility model discloses further set up to: the two sides of the upper cover are respectively and rotatably connected with a protecting cover used for sealing the opening of the through hole.

By adopting the technical scheme, after wiring, the protective cover is rotated to one side close to the through hole to seal the opening of the through hole, so that the phenomenon that a human hand stretches into the through hole to cause electric shock or a conductive object to be in mistaken contact to generate short circuit is avoided, and the potential safety hazard is small.

The utility model discloses further set up to: the upper cover is provided with a handle switch for controlling the on-off of a circuit in the breaker body and a handle lock for limiting the rotation of the handle switch.

By adopting the technical scheme, people can control the on-off of the circuit in the breaker body by utilizing the handle switch, the handle lock plays a role in positioning the handle switch, and the phenomenon that the circuit breaker body performs wrong actions due to the fact that the handle switch is carelessly moved by hands is avoided.

The utility model discloses further set up to: the base is internally provided with a mounting plate, and the breaker body comprises a solenoid coil release which is detachably connected to the mounting plate.

By adopting the technical scheme, the electromagnetic coil release is adopted to replace the traditional magnetic release, so that the production cost of the product is reduced.

The utility model discloses further set up to: all be equipped with the slot on two relative lateral walls of mounting panel, solenoid release is fixed with two inserted blocks towards the terminal surface of mounting panel, two inserted blocks respectively with two slot joint cooperations.

Through adopting above-mentioned technical scheme, when installing solenoid release, insert two inserts respectively in two slots for insert and slot joint, thereby make solenoid release's rigidity, above-mentioned mounting means has easy dismounting's effect.

The utility model discloses further set up to: two fastening blocks are fixed on one side of the mounting plate facing the electromagnetic coil release, and the distance between the two fastening blocks is slightly smaller than the height of the electromagnetic coil release; when the two inserting blocks are respectively inserted into the two inserting slots, the electromagnetic coil release is clamped between the two fastening blocks.

Through adopting above-mentioned technical scheme, be formed with the clearance of further chucking solenoid release between two fastening blocks, improved solenoid release's stability. The fastening block on the lower side also plays a role in supporting the electromagnetic coil release, so that the electromagnetic coil release is not easy to fall under the action of self gravity.

The utility model discloses further set up to: and a chamfer is arranged at the joint of the end surface of the fastening block far away from the mounting plate and the end surface close to the electromagnetic coil release.

Through adopting above-mentioned technical scheme, the chamfer plays the effect of direction when solenoid release stretches into between two fastening blocks, makes things convenient for solenoid release's cartridge.

The utility model discloses further set up to: the circuit breaker body also comprises a rotating shaft which is rotatably connected with the mounting plate, a rotating seat which is fixedly connected with the rotating shaft and moving contacts which are arranged in the rotating seat and one ends of which are exposed, and the moving contacts are equal in height; and a static contact is fixed on the wiring terminal close to the moving contact, and a static contact is arranged on the end surface of the static contact facing the moving contact.

By adopting the technical scheme, the electromagnetic coil release can be linked with the linkage mechanism in the circuit breaker body when working, and then the rotating shaft and the rotating seat are driven to drive the moving contact to rotate, so that the moving contact is contacted with the static contact on the static contact and the circuit is switched on, and the moving contact is separated from the static contact on the static contact to realize the disconnection of the circuit.

The utility model discloses further set up to: and a thickened part is integrally arranged on one side of the moving contact, which is far away from the static contact close to the moving contact.

By adopting the technical scheme, the thickened part saves the use of a contact on the movable contact, can provide enough overtravel and electric service life, and not only saves the cost but also simplifies the production process of the product on the premise of meeting the temperature rise standard.

To sum up, the utility model discloses following beneficial effect has:

1. the adjacent two wiring terminals are distributed in a staggered manner, so that the horizontal width of the leakage circuit breaker is reduced on the premise of ensuring enough electric clearance, the effects of small occupied space and space saving are achieved, and the distribution of external wires and movable bolts for pressing the external wires is facilitated;

2. the electromagnetic coil release is adopted to replace the traditional magnetic release, so that the production cost is reduced; the electromagnetic coil release is fixed through inserted block and slot joint, is further compressed tightly by two fastening blocks again, easy dismounting.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic structural view of the present embodiment with the upper cover and the base removed;

fig. 3 is a schematic structural view of the connection terminal in the present embodiment;

fig. 4 is a partial schematic view of the solenoid release and mounting plate shown separated in this embodiment.

Reference numerals: 1. a circuit breaker body; 11. a solenoid coil release; 111. a conductive pin; 112. a coil; 113. inserting a block; 12. a rotating shaft; 13. a rotating seat; 14. a moving contact; 141. thickening part; 2. an upper cover; 21. a through hole; 22. a protective cover; 23. a handle switch; 231. a limiting groove; 24. a handle lock; 241. a fixed seat; 242. a limiting block; 243. shifting blocks; 244. a stop hole; 3. a base; 31. a wiring hole; 32. mounting a plate; 321. a slot; 322. a fastening block; 323. chamfering; 4. a wiring terminal; 41. a wiring frame; 42. a wiring board; 43. a movable bolt; 44. static contact; 441. and a stationary contact.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses an electronic residual current circuit breaker, as shown in fig. 1 and 2, including circuit breaker body 1, upper cover 2 and base 3, inside vacuole formation when upper cover 2 and base 3 joint link to each other and both connect, and circuit breaker body 1 sets up in this cavity. The both sides of circuit breaker body 1 are equipped with four binding post 4 respectively, and two adjacent binding post 4 are the crisscross distribution of height, and two lateral walls that base 3 is relative are equipped with four wiring holes 31 respectively, and four wiring holes 31 respectively with four binding post 4's high parallel and level, the external conductor can stretch into base 3 by wiring hole 31 and link to each other with binding post 4.

As shown in fig. 1 and fig. 2, two adjacent wiring terminals 4 are distributed in a staggered manner, and compared with the wiring terminals 4 distributed horizontally, the horizontal distance is greatly reduced on the basis that the linear distance is equal, so that the overall width of the leakage breaker is reduced, the occupied space is small, and the space is saved. The width of the common four-pole electronic leakage circuit breaker is 72mm, the width of the product is 36mm, the space of 36mm is saved, and the specification can be maximally 40A.

As shown in fig. 2 and 3, the connection terminal 4 includes a connection frame 41, a connection board 42 and a movable bolt 43, the connection frame 41 is slidably disposed in the base 3, the connection board 42 is fixed on the base 3 and has one end extending into the connection frame 41, the movable bolt 43 is screwed with the upper side wall of the connection frame 41 and is vertically fixed, and the end of the movable bolt 43 is located on the upper side of the connection board 42. Eight through holes 21 are formed in the upper cover 2 and located right above the movable bolts 43, and a screwdriver matched with the heads of the movable bolts 43 can extend into the through holes 21 to rotate the movable bolts 43. When connecting external wires, the external wires are inserted into a gap formed between the lower side wall of the wire frame 41 and the wiring board 42, and the movable bolt 43 is driven to rotate by the bolt cutter, so that the wire frame 41 moves upward relative to the wiring board 42 and presses the external wires. Compared with the mode of directly pressing the wires by the movable bolts 43, the positioning mode has the advantages that the stress area of the external wires is large, and the pressing effect is good.

As shown in figure 1, two sides of the upper cover 2 are respectively hinged with a protecting cover 22, the protecting covers 22 can be respectively used for sealing openings of the four through holes 21 on two sides of the upper cover 2, so that electric shock accidents caused by direct stretching of hands into the through holes 21 or short circuits caused by mistakenly inserting a conductive object into the through holes 21 are avoided, and the potential safety hazard is small.

As shown in fig. 1 and 2, a handle switch 23 and a handle lock 24 are installed in the upper cover 2, the handle switch 23 is linked with the linkage mechanism in the circuit breaker body 1, and people can rotate the handle switch 23 to drive the linkage mechanism to work, so as to control the on-off of the circuit in the circuit breaker body 1.

As shown in fig. 1 and fig. 2, the handle lock 24 includes a fixing seat 241 fixed in the upper cover 2, a limiting block 242 slidably disposed in the fixing seat 241, and a shifting block 243 fixed on the limiting block 242, an upper end of the shifting block 243 exceeds the fixing seat 241, and a limiting groove 231 for the end of the limiting block 242 to extend into is disposed on an end surface of the handle switch 23 close to the fixing seat 241. People can push the end of the limit block 242 into the limit groove 231 by using the shifting block 243, so that the handle switch 23 is limited from rotating, and the circuit breaker body 1 is prevented from performing misoperation when people accidentally dial and touch the handle switch 23. The fixing base 241 and the stopper 242 are both provided with a stopping hole 244, when the stopper 242 is inserted into the limiting groove 231, the two stopping holes 244 are aligned, and one can insert the rod into the stopping hole 244 to fix the stopper 242.

As shown in fig. 2 and 4, a mounting plate 32 is fixed in the base 3, the circuit breaker body 1 includes a solenoid release 11, a rotating shaft 12 rotatably connected to the mounting plate 32, a rotating base 13 fixedly connected to the rotating shaft 12, and a moving contact 14 mounted on the rotating base 13, the number of the rotating base 13 and the moving contact 14 is four, and the height of the rotating base 13 and the height of the moving contact 14 are equal, and the lower end of the moving contact 14 extends out of the rotating base 13. A stationary contact 44 is fixed to the terminal 4 adjacent to the movable contact 14, and a stationary contact 441 is fixed to an end surface of the stationary contact 44 adjacent to the movable contact 14. When the electromagnetic coil release 11 works, the linkage mechanism in the circuit breaker body 1 is driven to be linked, and then the rotating shaft 12 is driven to drive the rotating seat 13 and the moving contact 14 to rotate, so that the moving contact 14 is in contact with the stationary contact 441 to realize the connection of a circuit, and the moving contact 14 is separated from the stationary contact 441 to realize the disconnection of the circuit.

As shown in fig. 2, a thickened portion 141 is integrally disposed on a side of the movable contact 14 away from the stationary contact 44 close thereto, and the thickened portion 141 replaces a conventional contact of the movable contact 14, so that the production process of the product is simplified and the production cost is reduced on the premise that the temperature rise standard is met.

As shown in fig. 2 and 4, the electromagnetic coil release 11 includes a conductive pin 111 and a coil 112 wound with an enameled wire, one end of the enameled wire on the coil 112 is welded on the conductive pin 111, and the other end is connected to the circuit board through a wire, and the electromagnetic coil release 11 is used to replace a conventional magnetic release, thereby reducing the production cost.

As shown in fig. 2 and 4, two opposite side walls of the mounting plate 32 are respectively provided with a slot 321, two insertion blocks 113 are fixed on an end surface of the electromagnetic coil release 11 close to the mounting plate 32, and the two insertion blocks 113 are respectively in clamping fit with the two slots 321. Two fastening blocks 322 are fixed on the end face of the mounting plate 32 close to the electromagnetic coil release 11, the distance between the two fastening blocks 322 is slightly smaller than the height of the electromagnetic coil release 11, and a chamfer 323 is arranged at the joint of the end face of the fastening block 322 far away from the mounting plate 32 and the end face close to the electromagnetic coil release 11. When installing solenoid release 11, stretch into two slots 321 with two inserted blocks 113 respectively so that its joint each other to make solenoid release 11's position fixed, two fastening blocks 322 play the effect of further compressing tightly solenoid release 11, have improved solenoid release 11's stability.

The working principle of the embodiment is as follows: two adjacent binding post 4 are the crisscross distribution of height, compare in binding post 4 horizontal distribution, have reduced the width of product under the unchangeable condition in its electric clearance, the occupation space of product is little, practice thrift the space. Compared with the traditional magnetic release device, the electromagnetic coil release device 11 has the effect of low cost, and the electromagnetic coil release device 11 is connected with the mounting plate 32 in a clamping manner, so that the assembly and disassembly are convenient.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an electronic type residual current circuit breaker, includes circuit breaker body (1), upper cover (2) and base (3), the both sides of circuit breaker body (1) are equipped with a plurality of binding post (4) respectively, its characterized in that: adjacent two binding post (4) are the crisscross distribution of height, be equipped with a plurality of wiring holes (31) that correspond with each binding post (4) position respectively on base (3), external conductor by wiring hole (31) penetrate and link to each other with binding post (4) in base (3).

2. An electronic residual current circuit breaker according to claim 1, characterized in that: binding post (4) including slide set up in base (3) wiring frame (41), one end stretch into wiring board (42) of wiring frame (41) and with wiring frame (41) go up side wall threaded connection's movable bolt (43), the tip of movable bolt (43) is located the upside of wiring board (42), be equipped with a plurality of through-holes (21) that are located each binding post (4) directly over respectively on upper cover (2).

3. An electronic residual current circuit breaker according to claim 2, characterized in that: the two sides of the upper cover (2) are respectively and rotatably connected with a protecting cover (22) used for sealing the opening of the through hole (21).

4. An electronic residual current circuit breaker according to claim 1, characterized in that: and a handle switch (23) for controlling the on-off of a circuit in the breaker body (1) and a handle lock (24) for limiting the rotation of the handle switch (23) are arranged on the upper cover (2).

5. An electronic residual current circuit breaker according to claim 1, characterized in that: be equipped with mounting panel (32) in base (3), circuit breaker body (1) is including dismantling solenoid release (11) of connection on mounting panel (32).

6. An electronic residual current circuit breaker according to claim 5, characterized in that: all be equipped with slot (321) on two relative lateral walls of mounting panel (32), solenoid release (11) are fixed with two inserted blocks (113) towards the terminal surface of mounting panel (32), and two inserted blocks (113) cooperate with two slot (321) joint respectively.

7. An electronic residual current circuit breaker according to claim 6, characterized in that: two fastening blocks (322) are fixed on one side of the mounting plate (32) facing the electromagnetic coil release (11), and the distance between the two fastening blocks (322) is slightly smaller than the height of the electromagnetic coil release (11); when the two insertion blocks (113) are respectively inserted into the two insertion slots (321), the electromagnetic coil release (11) is clamped between the two fastening blocks (322).

8. An electronic residual current circuit breaker according to claim 7, characterized in that: and a chamfer (323) is arranged at the joint of the end surface of the fastening block (322) far away from the mounting plate (32) and the end surface close to the electromagnetic coil release (11).

9. An electronic residual current circuit breaker according to claim 1, characterized in that: the circuit breaker body (1) further comprises a rotating shaft (12) rotatably connected with the mounting plate (32), a rotating seat (13) fixedly connected with the rotating shaft (12) and moving contacts (14) which are arranged in the rotating seat (13) and one ends of which are exposed, wherein the moving contacts (14) are equal in height; and a static contact (44) is fixed on the wiring terminal (4) close to the movable contact (14), and a static contact (441) is arranged on the end surface of the static contact (44) facing the movable contact (14).

10. An electronic residual current circuit breaker according to claim 9, characterized in that: the side of the moving contact (14) far away from the static contact (44) close to the moving contact is integrally provided with a thickened part (141).