CN108807090B

CN108807090B - Miniature circuit breaker and wiring structure thereof

Info

Publication number: CN108807090B
Application number: CN201710307352.5A
Authority: CN
Inventors: 周思雨
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-04
Filing date: 2017-05-04
Publication date: 2024-05-14
Anticipated expiration: 2037-05-04
Also published as: CN108807090A

Abstract

The invention discloses a miniature circuit breaker and a wiring structure thereof, wherein the miniature circuit breaker comprises a shell, and a wiring terminal and a control module which are connected to the shell, the wiring structure comprises an elastic connecting sheet and a PCB, and the elastic connecting sheet is electrically connected with the wiring terminal; the PCB board includes first face and second face, and first face is connected with elastic connection piece elasticity extrusion, and the second face is connected with the control module electricity. The miniature circuit breaker and the wiring structure thereof have the advantages of simple installation and operation, low possibility of error and strong integrity. In addition, the whole size of the miniature circuit breaker is reduced, so that the miniature circuit breaker can meet the standard requirements.

Description

Miniature circuit breaker and wiring structure thereof

Technical Field

The invention relates to a miniature circuit breaker, in particular to a wiring structure of the miniature circuit breaker.

Background

Miniature circuit breakers are one of the most widely used terminal protection appliances in the introduction of building electrical terminal distribution devices. The miniature circuit breaker is composed of a switching-on and switching-off mechanism, contacts, a protection device, an arc extinguishing system and the like. The working principle is as follows: overload and short-circuit protection are realized by using a protection device (release) and a current thermal assembly, when the current passing through a coil in the current thermal assembly is larger than a set current value, a movable iron core of the electromagnetic release acts to push a striking rod to strike an operating mechanism, so that the operating mechanism is unlocked, a circuit breaker is opened, and then the circuit is disconnected, thereby realizing overload and short-circuit protection on the circuit. When the circuit fault is discharged, the switching-on and switching-off mechanism is used for switching-on operation, so that the circuit is switched on. At present, the most miniature circuit breakers used in China nowadays are manual opening and closing type, and the circuit can be opened and closed by manually poking the opening and closing mechanism. The manual opening and closing miniature circuit breaker has simple structure and low cost, and does not need extra electric energy, so that opening and closing operation can be performed under the condition of no electric energy, and the manual opening and closing miniature circuit breaker is widely applied to old power grids.

However, with the development of science and technology, intelligent home appliances are increasingly widely used, and as a common miniature circuit breaker for protecting electric appliances, an intelligent control system is also urgently needed to be additionally arranged. In order to match with a common miniature circuit breaker of manual switching-on/off type which is widely used, an intelligent miniature circuit breaker which can be controlled remotely is newly added on one side of the common miniature circuit breaker, and the intelligent miniature circuit breaker drives other common miniature circuit breakers to perform switching-on/off operation according to an input control signal.

In order to further improve the cost control reliability of the electricity consumption information acquisition system, strengthen the quality control of the external circuit breaker of the electric energy meter, ensure that the external dimension of the circuit breaker is strictly regulated in the technical Specification of the external circuit breaker of the electric energy meter formulated for safe and stable operation of the electric power system, wherein the external shape and dimension of the intelligent miniature circuit breaker are consistent with those of the common miniature circuit breaker, so that the consistency of the appearance is ensured, and the terminal equipment of the circuit breaker is convenient to replace on a large scale.

However, the intelligent miniature circuit breaker in the prior art is generally larger than the common miniature circuit breaker in size and inconsistent in appearance due to the addition of the intelligent control device, so that the intelligent miniature circuit breaker cannot be directly used, and the basic equipment for placing the miniature circuit breaker is required to be adaptively modified before use, so that the intelligent miniature circuit breaker is large in early investment and long in construction period, and is not beneficial to the propelling process of the intelligent power grid.

The miniature circuit breaker comprises a monopole 1P, a diode 2P, a tripolar 3P, a quadrupole 4P and the like, and because of the integrated intelligent remote control requirement of the miniature circuit breaker, the intelligent miniature circuit breaker is provided with a remote control module, and the remote control module needs to take electricity or sample from an incoming line or outgoing line end of the miniature circuit breaker. At present, most of the use is to install a PCB (printed Circuit Board) outside the miniature circuit breaker, and then lead wires are connected with a control mechanism after an end cover is additionally arranged, or the switch is internally connected to the control mechanism by adopting a fixed lead wire, so that the installation is troublesome, the integrity is not strong, the appearance is not uniform, and the production cost is high.

Disclosure of Invention

The invention aims to provide a miniature circuit breaker and a wiring structure thereof, which have the advantages of simple structure, reliable wiring and easy operation.

In order to achieve the above object, the wiring structure of the present invention is connected to a miniature circuit breaker, the miniature circuit breaker comprises a housing, and a wiring terminal and a control module connected to the housing, wherein the wiring structure comprises an elastic connection sheet and a PCB board, and the elastic connection sheet is electrically connected to the wiring terminal; the PCB comprises a first surface and a second surface, wherein the first surface is elastically connected with the elastic connecting sheet in an extrusion mode, and the second surface is electrically connected with the control module.

In one embodiment of the above wiring structure, the terminal includes a wiring screw, and the housing includes an insertion hole located below the wiring screw.

In an embodiment of the foregoing wiring structure, the insertion hole includes two limiting portions symmetrically disposed, the PCB passes through the insertion hole, and the second surface is located by the limiting portions.

In an embodiment of the foregoing wiring structure, the electrical component further includes an electrical component connected to the second surface, and a receiving space is formed between the two limiting portions, where the electrical component is received in the receiving space when the PCB passes through the insertion hole.

In an embodiment of the foregoing wiring structure, the elastic connection piece includes a connection arm and an elastic arm, the connection arm is electrically connected to the wiring terminal, and the elastic arm is connected to the PCB board.

In an embodiment of the foregoing connection structure, the elastic arm includes a first elastic arm and a second elastic arm, where the first elastic arm is connected to the connecting arm, and the second elastic arm forms two obtuse sides with the first elastic arm.

In an embodiment of the foregoing wiring structure, the connection arm is L-shaped.

In an embodiment of the above wiring structure, the number of the micro circuit breakers is plural, the number of the elastic connection pieces is plural, the plurality of the elastic connection pieces are respectively disposed on the micro circuit breakers and connected with the terminals, and the PCB board sequentially passes through the insertion holes below the wiring screws of the micro circuit breakers.

In an embodiment of the foregoing wiring structure, the wiring terminal includes an incoming line end and an outgoing line end, and the two wiring structures are respectively connected to the incoming line end and the outgoing line end.

The miniature circuit breaker comprises a shell, and a wiring terminal and a control module which are connected to the shell, wherein the wiring structure is the wiring structure.

The miniature circuit breaker and the wiring structure thereof have the beneficial effects that the miniature circuit breaker is simple in installation and operation, is not easy to make mistakes, and has strong integrity. In addition, the whole size of the miniature circuit breaker is reduced, so that the miniature circuit breaker can meet the standard requirements.

The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

Drawings

FIG. 1 is an exploded view of a first embodiment of a wiring structure of the present invention;

FIG. 2 is a schematic diagram of a first embodiment of a wiring structure according to the present invention;

fig. 3 is a partial enlarged view of a first embodiment of the wiring structure of the present invention applied to a miniature circuit breaker;

Fig. 4 is an external view showing the first embodiment of the wiring structure of the present invention applied to a miniature circuit breaker;

FIG. 5 is an exploded view of a second embodiment of the wiring structure of the present invention;

FIG. 6 is a schematic diagram of a second embodiment of a wiring structure of the present invention;

Fig. 7 is an external view showing a second embodiment of the wiring structure of the present invention applied to a miniature circuit breaker.

Wherein reference numerals are used to refer to

100. Wiring structure

110. Elastic connecting sheet

111. Connecting arm

112. Elastic arm

1121. First elastic arm

1122. Second elastic arm

120 PCB (printed circuit board)

121. First surface

122. A second surface

200. Miniature circuit breaker

210. Shell body

220. Terminal end

221. Binding screw

211. Insertion hole

211A limit part

100' Wiring structure

120' PCB board

110' Elastic connecting piece

200' Miniature circuit breaker

211' Insertion hole

S accommodation space

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, so as to further understand the purpose, the scheme and the effects of the present invention, but not to limit the scope of the appended claims.

First embodiment

As shown in fig. 1 to 4, which are first embodiments of the present invention, the wiring structure 100 is connected in a miniature circuit breaker 200, and the miniature circuit breaker 200 includes a housing 210, and a terminal 220 and a control module (not shown) connected to the housing 210. The wiring structure 100 includes an elastic connection piece 110 and a PCB board 120, where the elastic connection piece 110 is disposed in the housing 210 of the miniature circuit breaker 200 and is electrically connected to the terminal 220 of the miniature circuit breaker 200. The PCB 120 includes a first surface 121 and a second surface 122, the first surface 121 is elastically pressed and connected with the elastic connection piece 110 (as shown in fig. 1 and 2), and the second surface 122 is electrically connected with the control module of the micro breaker 200.

Referring to fig. 3, wherein the terminal 220 of the micro circuit breaker 200 includes a terminal screw 221, an insertion hole 211 is provided on the housing 210, and the insertion hole 211 is disposed below the terminal screw 221. The elastic connection piece 110 is disposed under the connection screw 221 of the micro circuit breaker 200 and is disposed corresponding to the insertion hole 211. The insertion hole 211 includes two limiting portions 211a symmetrically disposed, for example, the limiting portions 211a are provided as limiting steps. When the PCB 120 passes through the insertion hole 211, the first surface 121 of the PCB 120 is elastically pressed and connected with the elastic connection piece 110, and the second surface 122 of the PCB 120 is positioned by the symmetrically arranged limiting portions 211a in the insertion hole 211. That is, when the PCB 120 is inserted into the insertion hole 211, the first surface 121 and the second surface 122 pass through between the elastic connection piece 110 and the limiting portion 211a, and are limited and fixed by the elastic connection piece 110 and the limiting portion 211a, respectively. And, the first surface 121 of the PCB 120 is powered through the elastic connection piece 110 of the connection terminal 220, and transmits the electrical signal to the control module through the second surface 122.

In addition, the wiring structure 100 of the present invention further includes an electrical component (not shown) connected to the second surface 122 of the PCB 120. As shown in fig. 3, a space S is formed between two symmetrically disposed limiting portions 211a of the insertion hole 211, and the space S becomes a space for accommodating electrical components when the PCB 120 passes through the insertion hole 211.

As shown in fig. 1 and 2, the elastic connection piece 110 is a conductive member, and includes a connection arm 111 and an elastic arm 112, and the connection arm 111 is electrically connected to the terminal 220. When the PCB 120 is inserted, the PCB 120 elastically presses the elastic arm 112 to deform the elastic arm 112, and the elastic arm 112 is connected to the PCB 120, so as to transmit the electrical signal of the terminal 220 to the PCB 120.

Specifically, the elastic arm 112 includes a first elastic arm 1121 and a second elastic arm 1122, the first elastic arm 1121 is connected to the connecting arm 111, and the second elastic arm 1122 forms obtuse sides with the first elastic arm 1121. When the PCB 120 is inserted into the insertion hole 211, the PCB 120 elastically presses the first elastic arm 1121 and the second elastic arm 1122, so that the obtuse angle formed by the first elastic arm 1121 and the second elastic arm 1122 is increased, and a pressure connection is formed, thereby ensuring the reliability and stability of the connection of the PCB 120 in the insertion hole 211.

The connection arm 111 of the elastic connection piece 110 is L-shaped, and the connection arm 111 of the L-shape guides the terminal 220 to the downward first surface 121 of the PCB 120 and is electrically connected.

Referring to fig. 1 to 4, in the present embodiment, the number of the micro circuit breakers 200 is 3P, the number of the elastic connection pieces 110 is three, and the elastic connection pieces are respectively disposed at the insertion holes 211 of each micro circuit breaker 200 and connected with the terminals 220 of each micro circuit breaker 200, the PCB 120 of the present invention is in a modular design, and the manufactured PCB 120 sequentially passes through the insertion holes 211 below the connection screws 221 of the three micro circuit breakers 200, and then the insertion holes 211 at the positions of the head and tail ends of the PCB 120 are plugged, so that the structure is compact, the operation is simple, and the integrity is strong.

The terminals 220 may be an in-line terminal or an out-line terminal, and the number of the wiring structures 100 may be two, so as to be used for connecting the in-line terminal and the out-line terminal respectively.

Second embodiment

As shown in fig. 5 to 7, a second embodiment of the present invention is different from the first embodiment in that: in this embodiment, the number of the micro circuit breakers 200 'is 2P, the number of the elastic connection pieces 110' is two, and the elastic connection pieces are respectively arranged at the insertion holes 211 'of each micro circuit breaker 200' and are connected with the terminals of each micro circuit breaker 200', and the PCB 120' sequentially passes through the insertion holes 211 'below the connection screws of the two micro circuit breakers 200'.

Similar to the first embodiment, the terminals may be in-line terminals or out-line terminals, and the wiring structures 100' may be two for connecting the in-line terminals and out-line terminals, respectively.

Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A wiring structure for connection in a miniature circuit breaker, said miniature circuit breaker comprising a housing and terminals and control modules connected to said housing, said wiring structure comprising:

an elastic connecting piece electrically connected with the wiring terminal; and

The PCB comprises a first surface and a second surface, wherein the first surface is elastically connected with the elastic connecting sheet in an extrusion mode, and the second surface is electrically connected with the control module;

The wiring terminal comprises a wiring screw, the shell comprises an insertion hole, the insertion hole is positioned below the wiring screw, the insertion hole comprises two limit parts which are symmetrically arranged, the PCB passes through the insertion hole, and the second surface is positioned by the limit parts;

The elastic connecting piece comprises a connecting arm and an elastic arm, the connecting arm is electrically connected with the wiring terminal, the elastic arm is connected with the PCB, the elastic arm comprises a first elastic arm and a second elastic arm, the first elastic arm is connected with the connecting arm, and the second elastic arm and the first elastic arm form two sides of an obtuse angle;

The elastic connecting pieces are multiple, the elastic connecting pieces are respectively arranged on the miniature circuit breakers and connected with the wiring terminals, and one PCB sequentially penetrates through the inserting holes below the wiring screws of the miniature circuit breakers.

2. The connection structure according to claim 1, further comprising an electrical component connected to the second surface, wherein a receiving space is formed between the two limiting portions, and the electrical component is received in the receiving space when the PCB passes through the insertion hole.

3. The wiring structure of claim 1, wherein the connecting arms are L-shaped.

4. The connection structure according to claim 1, wherein the connection terminal includes an incoming line end and an outgoing line end, and the connection structure is two, and is connected to the incoming line end and the outgoing line end, respectively.

5. A miniature circuit breaker comprising a housing and terminals and a control module connected to the housing, wherein the wiring structure is as claimed in any one of claims 1 to 4.