CN215815755U

CN215815755U - Wiring structure and circuit breaker

Info

Publication number: CN215815755U
Application number: CN202122342127.XU
Authority: CN
Inventors: 周思雨
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-02-11
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a wiring structure and a circuit breaker, wherein the wiring structure comprises an elastic connecting sheet, and the elastic connecting sheet comprises a connecting arm which is L-shaped; the elastic arm is connected to the side surface of any side wall of the connecting arm; the elastic arm comprises a first part extending outwards from the middle part of the side face of any side wall of the connecting arm and a second part extending from the end part of the extending end of the first part to the bottom face of the side wall connected with the elastic arm in a bending mode. According to the utility model, the elastic arm extends towards the side of the connecting arm firstly and then bends towards the middle part of the connecting arm, so that the overall length of the elastic arm is increased, and when the elastic connecting piece is used, the first part and the second part of the elastic arm are elastically deformed, thereby enhancing the overall elastic effect of the elastic arm.

Description

Wiring structure and circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a wiring structure and a circuit breaker with the wiring structure.

Background

The miniature circuit breaker is a terminal protection electric appliance which is most widely used in a power distribution device of a building electric terminal. The miniature circuit breaker comprises a switching-on and switching-off mechanism, a contact, a protection device, an arc extinguishing system and the like. The working principle is as follows: the protection device (release) and the current thermal assembly are used for realizing overload and short-circuit protection, 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 impact an operating mechanism, so that the operating mechanism is unlocked, the circuit breaker is opened, and then a circuit is disconnected, and the overload and short-circuit protection of the circuit is realized. When the circuit fault is discharged, the circuit is closed by the switching-on mechanism. At present, the most miniature circuit breakers used in China at present are of a manual on-off type, and the on-off operation of a circuit can be carried out by manually shifting an on-off mechanism. The manual opening and closing type miniature circuit breaker is simple in structure, low in cost and free of extra electric energy, so that opening and closing operations can be performed under the condition of no electric energy, and the manual opening and closing type miniature circuit breaker is widely applied to old power grids.

However, with the development of science and technology, intelligent household appliances are more and more widely used, and as a common miniature circuit breaker for protecting the electric appliances, an intelligent control system is also urgently needed to be additionally installed. In order to match with a widely-used manual switching-on and switching-off type common miniature circuit breaker, an intelligent miniature circuit breaker capable of being remotely controlled is added to one side of the common miniature circuit breaker, and the intelligent miniature circuit breaker drives other common miniature circuit breakers to perform switching-on and switching-off operations according to input control signals.

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 safe and stable operation of the electric power system is established and strict standard limitation is carried out on the overall dimension of the circuit breaker in the technical specification of the external circuit breaker of the electric energy meter, wherein, the overall shape and the dimension of the intelligent miniature circuit breaker and the common miniature circuit breaker are consistent, so as to ensure the consistency of the appearance and conveniently carry out the replacement of large-scale circuit breaker terminal equipment.

However, the intelligent miniature circuit breaker in the prior art is large in size compared with an ordinary miniature circuit breaker due to the addition of the intelligent control device, inconsistent in appearance and incapable of being directly used, and before use, basic equipment for placing the miniature circuit breaker needs to be subjected to adaptive transformation, so that the early investment is large, the working period is long, and the intelligent micro circuit breaker is not beneficial to the propulsion process of an intelligent power grid.

Miniature circuit breaker includes monopole 1P, dipolar 2P, tripolar 3P, quadrupole 4P etc. because miniature circuit breaker integration intelligent remote control's needs, intelligent miniature circuit breaker has the remote control module, and the remote control module need get electricity or sample from miniature circuit breaker's inlet wire or leading-out terminal. At present, most of the existing PCB circuit boards are arranged outside the miniature circuit breaker, the additional arrangement of an end cover is adopted, then a lead is connected with the control mechanism, or the internal arrangement of the switch adopts a fixed leading-out wire to be connected to the control mechanism, so that the installation is troublesome, the integrity is not strong, the appearance is not uniform, and the production cost is high.

Therefore, the design of a wiring structure which can meet the requirement of integrated intelligent remote control of the circuit breaker and can ensure small overall size, strong integrity and easy operation of the circuit breaker becomes a technical problem to be solved urgently by technical personnel in the field.

In view of the above, the present invention is particularly proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a wiring structure which is simple in structure, reliable in wiring and easy to operate.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a wiring structure comprises an elastic connecting sheet, the elastic connecting sheet comprises,

the connecting arm is L-shaped;

the elastic arm is connected to the side surface of any side wall of the connecting arm;

the elastic arm comprises a first part extending outwards from the middle part of the side face of any side wall of the connecting arm and a second part extending from the end part of the extending end of the first part to the bottom face of the side wall connected with the elastic arm in a bending mode.

In the above scheme, elastic connection piece is integrated into one piece's electrically conductive, through setting up the elastic arm and extend to the side of linking arm earlier, buckle to the linking arm middle part again, makes the whole length of elastic arm increase, and elastic connection spare is when using, and elastic deformation all takes place for the first part and the second part of elastic arm to the holistic elastic effect of elastic arm has been strengthened.

Further, the connecting arm comprises a first side wall and a second side wall which are perpendicular to each other, the elastic arm is connected to the side face of the first side wall, and the second portion of the elastic arm and the second side wall are arranged on the same side of the first side wall.

In the above scheme, through setting up the spring arm and second lateral wall in the homonymy of first lateral wall, make the height reduction of elastic connection spare to guarantee that elastic connection spare's whole size reduces.

Furthermore, one side of the first side wall, which is connected with the elastic arm, is provided with a notch, and the elastic arm is connected in the notch.

In the above scheme, the breach sets up in the one side that first lateral wall links to each other with the second lateral wall, the elastic arm is connected in breach department, on the inner wall perpendicular with the second lateral wall to for the extension of the first portion of elastic arm provides the space, make elastic connecting piece's width reduce, and then guarantee that elastic connecting piece's whole size reduces.

Furthermore, the end of the second part of the elastic arm far away from the end connected with the first part is provided with a first convex part protruding towards the direction far away from the bottom surface of the first side wall.

In the scheme, the second part of the elastic arm is bent towards the direction far away from the first side wall and then towards the direction close to the first side wall to form the first convex part, the elastic connecting piece is abutted with other parts (such as a PCB) through the first convex part, on one hand, the concentration of abutting positions between the elastic connecting piece and the other parts can be guaranteed, on the other hand, the effective length of the elastic arm can be guaranteed to be maximized by arranging the first convex part at the end part of the elastic arm, and therefore the elastic effect of the elastic arm is guaranteed.

Furthermore, the first part of the elastic arm is bent from the connection position of the first part and the connecting arm to one side far away from the second part of the elastic arm;

an included angle is arranged between the first part of the elastic arm and the side wall connected with the elastic arm, and the included angle is larger than 90 degrees.

In the above scheme, through setting up the bending at the junction of elastic arm and linking arm, can reduce the distance between the first convex part of elastic arm and the first lateral wall of linking arm under the prerequisite of the elastic effect of guaranteeing the elastic arm to under the prerequisite of guaranteeing the elastic effect, improve the compactness of assembling between elastic connecting piece and other parts.

Furthermore, the PCB is elastically connected with one or more elastic connecting sheets arranged at intervals in an extrusion manner.

In the above scheme, the circuit breakers are multiple, the elastic connecting sheets are respectively arranged in each circuit breaker and connected with the wiring ends arranged in the circuit breakers, and the PCB sequentially penetrates through the insertion holes below the wiring screws of each circuit breaker, so that integration is realized.

Further, still include the copper sheet, the copper sheet includes butt portion and installation department, butt portion and PCB board elasticity extrusion are connected.

In the scheme, the copper sheet is an integrated piece, and the mounting part is provided with a mounting hole for fixing the copper sheet; the installation part is also provided with a wiring part used for being connected with the circuit inside the circuit breaker.

Furthermore, the middle part of the abutting part of the copper sheet is provided with a second convex part protruding towards the PCB, and the abutting part is abutted with the PCB through the second convex part.

In the above scheme, the butt joint portion of copper sheet extends to the one side that is close to the PCB board earlier, buckles to the one side of keeping away from the PCB board again from its continuous department with the installation department, forms the second convex part, and butt joint portion passes through the second convex part and looks butt with the PCB board, can guarantee that copper sheet and PCB board contact position are concentrated, prevents that the rest of butt joint portion from contacting with the PCB board, takes place to interfere.

Further, the abutting portion is arranged between the elastic connecting piece and the PCB, and one end, far away from the installation portion, of the abutting portion is abutted against the elastic connecting piece.

In the above scheme, the abutting part of the copper sheet is arranged on one side of the elastic arm far away from the second side wall, and the end part of the abutting part abuts against the bottom surface of the connecting arm, which is opposite to the PCB, of the first side wall.

The second purpose of the utility model is to provide a circuit breaker, which comprises a housing, and a terminal and a control module which are connected to the housing, wherein the terminal and the control module are connected through a wiring structure, and the wiring structure is the wiring structure.

After adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

1) according to the utility model, the elastic arm extends towards the side of the connecting arm firstly and then bends towards the middle part of the connecting arm, so that the overall length of the elastic arm is increased, and when the elastic connecting piece is used, the first part and the second part of the elastic arm are elastically deformed, thereby enhancing the overall elastic effect of the elastic arm.

2) By adopting the circuit breaker and the wiring structure thereof, the installation and operation of a user are simple, the error is not easy to occur, and the circuit breaker has strong integrity. In addition, the overall size of the circuit breaker is reduced, so that the circuit breaker can meet the standard requirement.

Meanwhile, the utility model has simple structure and obvious effect and is suitable for popularization and use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic overall structure diagram of a 3P circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of the circuit breaker according to the embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the embodiment of the present invention shown in FIG. 3A;

fig. 4 is a combination schematic diagram of a wiring structure of a 3P circuit breaker in an embodiment of the utility model;

fig. 5 is an exploded schematic view of a wiring structure of a 3P circuit breaker according to an embodiment of the utility model;

FIG. 6 is a schematic view of the overall structure of an elastic connecting piece according to an embodiment of the present invention;

FIG. 7 is a schematic view of the overall structure of a copper sheet according to an embodiment of the present invention;

fig. 8 is a schematic view of the overall structure of a 2P circuit breaker according to an embodiment of the present invention;

fig. 9 is a schematic combination diagram of a wiring structure of a 2P circuit breaker according to an embodiment of the utility model;

fig. 10 is an exploded view of a wiring structure of a 2P circuit breaker according to an embodiment of the present invention;

description of the main elements in the figures:

1. an elastic connecting sheet; 101. a connecting arm; 1011. a first side wall; 1012. a second side wall; 102. a resilient arm; 1021. a first portion; 1022. a second portion; 1023. a first convex portion; 1024. a notch; 2. a PCB board; 3. a copper sheet; 301. an abutting portion; 302. an installation part; 303. a second convex portion; 304. a wiring portion; 305. mounting holes; 4. a housing; 401. an insertion hole; 402. a terminal; 403. a binding screw; 404. a limiting part.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 10, a wiring structure connected in a circuit breaker including a case 4, and a terminal 402 and a control module connected in the case 4 is described in an embodiment of the present invention. The wiring structure comprises an elastic connecting sheet 1 and a PCB 2, wherein the elastic connecting sheet 1 is arranged in a shell 4 of the circuit breaker and is electrically connected with a wiring terminal 402 of the circuit breaker. The PCB board 2 comprises a first surface and a second surface, the first surface is elastically extruded and connected with the elastic connecting piece 1, and the second surface is electrically connected with a control module of the circuit breaker.

As shown in fig. 2, in the present embodiment, the terminal 402 of the circuit breaker includes a binding screw 403, and the housing 4 is provided with an insertion hole 401, and the insertion hole 401 is disposed below the binding screw 403. The elastic connection piece 1 is disposed below the binding screw 403 of the circuit breaker and is disposed corresponding to the insertion hole 401. The insertion hole 401 includes two stopper portions 404 symmetrically arranged, and for example, the stopper portions 404 are provided as stopper steps. When the PCB 2 passes through the insertion hole 401, the first surface of the PCB 2 is elastically connected to the elastic connection piece 1 by pressing, and the second surface of the PCB 2 is positioned by the symmetrically arranged position limiting parts 404 in the insertion hole 401. That is, when the PCB 2 is inserted into the insertion hole 401, it passes through between the elastic connection piece 1 and the stopper 404, and the first surface and the second surface are respectively fixed by the elastic connection piece 1 and the stopper 404. And, the first face of PCB board 2 gets electricity through the elastic connection piece 1 of connecting terminal 402 to transmit the signal of telecommunication to control module through the second face.

In addition, in this embodiment, the wiring structure further includes an electrical component, and the electrical component is connected to the second surface of the PCB 2. As shown in fig. 3, in the present embodiment, an accommodating space is formed between two symmetrically disposed limiting portions 404 of the insertion hole 401, and when the PCB 2 passes through the insertion hole 401, the accommodating space becomes a space for accommodating electrical components.

As shown in fig. 4 and 5, in the embodiment, the elastic connecting piece 1 is an integrally formed conductive piece, and includes a connecting arm 101 and an elastic arm 102, the connecting arm 101 is electrically connected to the terminal 402, when the PCB 2 is inserted, the PCB 2 elastically presses the elastic arm 102 to deform the elastic arm 102, and the elastic arm 102 is connected to the PCB 2, so as to transmit an electrical signal of the terminal 402 to the PCB 2.

Preferably, in this embodiment, the connecting arm 101 of the elastic connecting piece 1 is L-shaped, and includes a first side wall 1011 and a second side wall 1012 perpendicular to each other, and the elastic arm 102 is connected to the first side wall 1011 and includes a first portion 1021 extending outward from a middle portion of a side surface perpendicular to the second side wall 1012 on the first side wall 1011 of the connecting arm 101, and a second portion 1022 extending from an end portion of an extending end of the first portion 1021 toward a bottom surface of the first side wall 1011.

Preferably, in this embodiment, an end of the second portion 1022 of the elastic arm 102, which is far away from the end connected to the first portion 1021, is bent in a direction away from the first sidewall 1011, and then bent in a direction close to the first sidewall 1011 to form a first protrusion 1023, where the elastic connector abuts against the PCB 2 through the first protrusion 1023, on one hand, the abutting position between the elastic connector and other components can be guaranteed to be concentrated, and on the other hand, by disposing the first protrusion 1023 at the end of the elastic arm 102, the effective length of the elastic arm 102 can be guaranteed to be maximized, so as to guarantee the elastic effect of the elastic arm 102.

Specifically, when the PCB 2 is inserted into the insertion hole 401, the PCB 2 elastically presses the top of the first protrusion 1023, so that the first portion 1021 and the second portion 1022 of the elastic arm 102 are elastically deformed to form a pressure connection, thereby ensuring the reliability and stability of the connection of the PCB 2 in the insertion hole 401.

Preferably, in this embodiment, the first portion 1021 of the elastic arm 102 is bent from the connection position with the first sidewall 1011 of the connection arm 101 to a side away from the second portion 1022 of the elastic arm 102, so that an included angle is formed between the first portion 1021 of the elastic arm 102 and the first sidewall 1011 of the connection arm 101, and the included angle is an obtuse angle. In this embodiment, by providing a bend at the connection between the elastic arm 102 and the connecting arm 101, the distance between the first convex portion 1023 of the elastic arm 102 and the first side wall 1011 of the connecting arm 101 can be reduced on the premise of ensuring the elastic effect of the elastic arm 102.

As shown in fig. 6, in this embodiment, a notch 1024 is formed on a side of the first side wall 1011 connected to the elastic arm 102, the notch 1024 is formed on a side of the first side wall 1011 connected to the second side wall 1012, and the elastic arm 102 is connected to an inner wall of the notch 1024 perpendicular to the second side wall 1012, so as to provide a space for extending the first portion 1021 of the elastic arm 102, so that the width of the elastic connecting member is reduced, and the overall size of the elastic connecting member is reduced.

As shown in fig. 3 to 6, in the present embodiment, the second side wall 1012 and the elastic arm 102 are disposed on the same side of the first side wall 1011, and the second side wall 1012 is connected to the terminal 402 for guiding the current of the terminal 402 to the elastic arm 102 and transmitting the current to the control module through the PCB 2.

As shown in fig. 7, in this embodiment, the wiring structure further includes a copper sheet 3 connected to the outlet end of the control module, the copper sheet 3 is an integral piece and includes an abutting portion 301 and a mounting portion 302, the mounting portion 302 is provided with a mounting hole 305 for fixing the copper sheet 3 on the circuit breaker housing 4, and the mounting portion 302 is further provided with a wiring portion 304 for connecting to the outlet end of the control module; the abutting part 301 is provided with a second convex part 303, and the copper sheet 3 is elastically connected with the PCB 2 through the second convex part 303 in a pressing manner.

In this embodiment, the abutting portion 301 of the copper sheet 3 extends from the connection position with the mounting portion 302 to a side close to the PCB 2, and then bends to a side away from the PCB 2 to form a second protrusion 303, and the abutting portion 301 abuts against the PCB 2 through the second protrusion 303.

Preferably, in the present embodiment, the abutting portion 301 of the copper sheet 3 is disposed between the first side wall 1011 of the connecting arm 101 and the PCB 2, and one end of the abutting portion 301 away from the mounting portion 302 abuts on a bottom surface of the first side wall 1011 of the connecting arm 101 opposite to the PCB 2. Specifically, two portions of the abutting portion 301 forming the second protruding portion 303 form two obtuse-angled sides, when the PCB 2 is inserted into the insertion hole 401, the PCB 2 elastically presses against the top of the second protruding portion 303, so that the end of the abutting portion 301 abutting against the connecting arm 101 slides to the side far away from the mounting portion 302, the obtuse angle between the two portions forming the second protruding portion 303 is increased, pressure connection is formed, and reliability and stability of connection of the PCB 2 in the insertion hole 401 are guaranteed.

Preferably, in this embodiment, the abutting portion 301 is disposed on a side of the elastic arm 102 away from the second side wall 1012 and is parallel to the elastic arm 102, so as to prevent the elastic arm 102 and the abutting portion 301 from interfering with each other.

As shown in fig. 1 to 5, in the present embodiment, the number of the circuit breakers is 3P, and the number of the elastic connection pieces 1 is three, and the elastic connection pieces are respectively disposed at the insertion holes 401 of each circuit breaker and connected to the terminals 402 of each circuit breaker.

In this embodiment, the PCB 2 is of a modular design, and the manufactured PCB 2 sequentially passes through the insertion holes 401 below the terminal screws 403 of the three circuit breakers, and then plugs the insertion holes 401 at the positions of the head and the tail ends of the PCB 2, so that the structure is compact, the operation is simple and easy, and the integrity is strong.

In this embodiment, the terminals 402 may be an incoming terminal or an outgoing terminal, and two wiring structures may be provided for respectively connecting the incoming terminal and the outgoing terminal.

As shown in fig. 8 to 10, in the present embodiment, the circuit breakers are 2P, the two elastic connection pieces 1 are respectively disposed at the insertion holes 401 of each circuit breaker and connected to the terminals 402 of the circuit breakers, and the PCB board 2 sequentially passes through the insertion holes 401 below the terminal screws 403 of the two circuit breakers.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A wiring structure comprises an elastic connecting sheet (1), wherein the elastic connecting sheet (1) comprises,

a connecting arm (101) in an L-shape;

an elastic arm (102) connected to the side surface of any one side wall of the connecting arm (101);

the elastic arm (102) is characterized by comprising a first part (1021) extending outwards from the middle part of the side face of any side wall of the connecting arm (101), and a second part (1022) extending from the end part of one end extending from the first part (1021) to the bottom face of the side wall connected with the elastic arm (102) in a bending mode.

2. The wiring structure according to claim 1, characterized in that the connecting arm (101) comprises a first side wall (1011) and a second side wall (1012) perpendicular to each other, the resilient arm (102) being attached to the side of the first side wall (1011), the second portion (1022) and the second side wall (1012) of the resilient arm (102) being arranged on the same side of the first side wall (1011).

3. The wiring structure according to claim 2, characterized in that the side of the first side wall (1011) that is connected to the resilient arm (102) is provided with a notch (1024), and the resilient arm (102) is connected in the notch (1024).

4. A wiring structure according to claim 3, wherein the second portion (1022) of the resilient arm (102) is provided with a first protrusion (1023) projecting away from the bottom surface of the first side wall (1011) at an end thereof connected to the first portion (1021).

5. A wiring structure according to any one of claims 1-4, characterized in that the first part (1021) of the resilient arm (102) is bent away from its connection with the connection arm (101) to a side remote from the second part (1022) of the resilient arm (102);

an included angle is formed between the first part (1021) of the elastic arm (102) and the side wall connected with the elastic arm (102), and the included angle is larger than 90 degrees.

6. The wiring structure according to any one of claims 1 to 4, further comprising a PCB board (2), wherein the PCB board (2) is elastically press-connected with one or more elastic connection pieces (1) arranged at intervals.

7. The wiring structure according to claim 6, further comprising a copper sheet (3), wherein the copper sheet (3) comprises an abutting portion (301) and a mounting portion (302), and the abutting portion (301) is elastically press-connected to the PCB board (2).

8. The wiring structure according to claim 7, wherein a second protrusion (303) protruding toward the PCB (2) is provided in the middle of the abutting portion (301) of the copper sheet (3), and the abutting portion (301) abuts against the PCB (2) through the second protrusion (303).

9. The wiring structure according to claim 8, wherein the abutting portion (301) is disposed between the elastic connection piece (1) and the PCB (2), and one end of the abutting portion (301) away from the mounting portion (302) abuts against the elastic connection piece (1).

10. A circuit breaker comprising a housing (4), and a terminal (402) and a control module connected to the housing (4), the terminal (402) and the control module being connected by a wiring structure, characterized in that the wiring structure is as claimed in any one of claims 1 to 9.