CN216957927U

CN216957927U - Circuit breaker convenient to peg graft

Info

Publication number: CN216957927U
Application number: CN202220339241.9U
Authority: CN
Inventors: 龚旺; 辛克均; 陈然
Original assignee: Xiamen Hongfa Electrical Safety and Controls Co Ltd
Current assignee: Xiamen Hongfa Automotive Electronics Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-07-12
Anticipated expiration: 2032-02-18

Abstract

The utility model discloses a circuit breaker convenient for plugging, which comprises a shell, wherein a circuit board is arranged in the shell, one end of the shell is provided with a signal interface, the signal interface comprises a plurality of conductive elastic pieces and a groove arranged at one end of the shell, one end of each elastic piece is provided with a contact, the other end of each elastic piece is fixedly connected on the circuit board, one end of each elastic piece provided with the contact is positioned in the groove, and each elastic piece is in contact conduction with an external conductive circuit by utilizing the contact. Furthermore, a plurality of external conductive circuits are simultaneously arranged on one bus bar, and the circuit breaker is inserted into the bus bar through the groove; the contacts on the elastic pieces are arranged in a step shape, and a plurality of conducting circuits on the bus bar are arranged in parallel; the shell is also provided with a safety mechanism for hot plug. The utility model is convenient for plugging and pulling the breaker and can better ensure the conduction of the signal interface.

Description

Circuit breaker convenient to peg graft

Technical Field

The utility model relates to the technical field of electrical equipment manufacturing, in particular to a circuit breaker convenient to plug.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. A circuit breaker generally includes a contact system, an arc extinguishing system, an operating mechanism, a trip unit, a case, and the like.

The existing part of plug-in type circuit breakers are provided with signal interfaces so as to transmit signals or obtain control power supplies with external equipment, and realize functions of control, metering and the like. For example, a chinese utility model patent with patent number zl202021496704.x entitled "breaker port structure and breaker" was disclosed at 19.03.19.2021, which includes: the circuit breaker comprises a shell, a signal terminal interface and a circuit breaker, wherein the signal terminal interface is arranged on the shell of the circuit breaker and at least comprises a circuit breaker current signal interface, and the circuit breaker current signal interface is used for being connected with a moving contact or a static contact of the circuit breaker so as to transmit a circuit breaker current signal to the outside. This circuit breaker port structure and circuit breaker can provide the signal terminal interface that is used for gathering the circuit information of circuit breaker and major loop that inserts to be convenient for the user and insert external signal processing equipment, with detect circuit breaker and major loop. However, from the disclosure of the specification, the signal terminal interface is a structure matched with the pin, and the plugging and unplugging need to be accurately aligned, so that the installation and the disassembly are troublesome, and poor contact is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circuit breaker convenient to plug, which is convenient for plugging and unplugging installation of the circuit breaker and can better ensure the conduction of a signal interface.

In order to achieve the purpose, the technical scheme of the utility model is as follows: the utility model provides a circuit breaker convenient to peg graft, includes the casing, is equipped with the circuit board in the casing, and the one end of casing is equipped with signal interface, signal interface includes many elastic components that can electrically conduct and sets up the recess in casing one end, and the one end of every elastic component is equipped with the contact, and the other end of every elastic component links firmly on the circuit board, and every elastic component is equipped with contact one end and is in the recess, and every elastic component utilizes contact and an outside conducting wire contact to switch on.

In a further improvement, one end of each elastic piece is bent to form a U-shaped part, and the U-shaped part is the contact; the other end of each elastic piece is bent to form a connecting part, and the connecting parts are fixedly connected to the circuit board in a welding mode.

Still further, the middle part of each elastic part is bent twice to form an elastic reinforcing part. Therefore, the elastic pressure of the contact on the elastic piece can be further enhanced, and better contact conduction with the conducting circuit of the bus bar is ensured.

Further improve, outside conducting wire sets up simultaneously on a generating line row, and the circuit breaker is arranged through this recess grafting generating line. The circuit breaker is further convenient to be installed in an inserting mode.

Preferably, the contacts on the elastic pieces are arranged in a step shape, and the conductive lines on the bus bar are arranged in parallel. Therefore, the multi-path connection is convenient to form, and the bus bar is convenient to plug a plurality of circuit breakers so as to form multi-path control.

Still further, the shell is provided with a plurality of limiting convex parts at positions close to the grooves, and each limiting convex part clamps one contact. Therefore, the contact position of the contact and the external conductive circuit can be well ensured, and the conduction reliability is improved.

It is further preferred that the groove is a substantially U-shaped groove, and the bottom of the groove is in contact with one side of the busbar for limiting. So that the contact and the conducting circuit of the bus bar can be reliably aligned. Still further, the notch oral area is equipped with the splayed chamfer. The bus bar is conveniently clamped in the groove. Still further, the groove is provided with a plurality of arc-shaped convex parts at the side opposite to the upper contact of the elastic piece. Therefore, the friction force of the bus bar clamped into the groove can be reduced, and the plugging and pulling installation is facilitated.

The circuit board comprises a main circuit board and an auxiliary circuit board, wherein the auxiliary circuit board is vertically and fixedly connected with the main circuit board, and the other end of each elastic element is fixedly connected with the auxiliary circuit board. This facilitates the structural arrangement and also facilitates the mounting of the circuit board in the housing.

Furthermore, a movable handle is arranged at the other end of the shell, a contact mechanism of the circuit breaker can be switched on by pressing the handle, a safety piece is arranged in the shell and close to the handle, the middle part of the safety piece is pivoted on the shell, one end of the safety piece is provided with an elastic part, the elastic part is abutted against the shell, the shell is provided with a through hole close to the safety piece, and the safety piece is provided with a pressing convex part which is positioned on the through hole; when the pressing convex part protrudes out of the shell, the other end of the safety part props against the handle to enable the handle to be incapable of being pressed to be switched on, or when the breaker is in a switching-on state, the handle props against the other end of the safety part to enable the pressing convex part to be incapable of being pressed into the shell. One of the safety mechanisms enables the breaker to be switched on without pressing down the pressing convex part of the safety piece by pressing down the handle, namely the breaker cannot be switched on without pressing down the pressing convex part through the cabinet when the breaker is not installed in the cabinet, so that the breaker is in an open state during plug-in installation, and the safety of the plug-in installation is ensured; another kind of safety mechanism makes the circuit breaker when closing the state, because press the convex part can't press into in the casing can't pack into the rack, guarantee that only the separating brake state can pack into the rack, also guarantee the security of plug installation equally. The power-off of the upper level is not needed when the installation and the disassembly are realized.

Still further, the pressing protrusion is provided with a pressing guide slope. So as to press the pressing protrusion by the pressing guide slope.

And when the pressing convex part protrudes out of the shell, the handle is provided with a shoulder, the other end of the safety part abuts against the shoulder, so that the handle cannot be pressed to be switched on, or the middle part of the handle is provided with a limiting convex part, and when the breaker is in a switching-on state, the limiting convex part abuts against the other end of the safety part, so that the pressing convex part cannot be pressed into the shell. Through the reliable cooperation of handle and safety part for the circuit breaker can not electrified grafting or electrified being extracted at the combined floodgate state, improves the safety in utilization.

Preferably, the signal interface is a communication and power supply interface, and the bus bar provides a control signal and power supply for the circuit board through the elastic pieces. Therefore, control signals, current metering signals, a control power supply and the like can be transmitted, switching-on and switching-off of the circuit breaker can be controlled conveniently, electricity consumption of the circuit breaker can be detected conveniently, and more functions can be realized.

One end of each elastic piece is provided with a contact, the other end of each elastic piece is fixedly connected to the circuit board, one end of each elastic piece, which is provided with the contact, is positioned in the groove, and each elastic piece is in contact conduction with an external conductive circuit by utilizing the contact. Therefore, when the circuit breaker is installed, the contact elastic pressure on the elastic piece can be utilized to be in contact conduction with an external conductive circuit, the circuit breaker is convenient to insert and pull out, and the conduction of a signal interface can be well guaranteed.

Drawings

FIG. 1 is a front view of a first embodiment of the present invention;

FIG. 2 is an enlarged view at A of FIG. 1;

fig. 3 is a perspective view of the contact of the elastic member of the first embodiment of the present invention in contact with the conductive traces of the bus bar;

FIG. 4 is an enlarged view at B of FIG. 3;

FIG. 5 is a perspective view of a spring according to a first embodiment of the present invention;

FIG. 6 is a perspective view of the connection between five elastic members and a circuit board according to the first embodiment of the present invention;

FIG. 7 is a front view of a hidden portion of the housing of the first embodiment of the present invention;

FIG. 8 is an enlarged view at C of FIG. 7;

FIG. 9 is a perspective view of the handle and safety member of the first embodiment of the present invention in their installed relative positions;

FIG. 10 is a partial front view of the first embodiment of the present invention in the closed position with portions of the housing hidden;

FIG. 11 is a front view of the second embodiment of the present invention in the open position with portions of the housing hidden;

FIG. 12 is an enlarged view at D of FIG. 11;

FIG. 13 is a perspective view of the handle and safety member of the second embodiment of the present invention shown in their relative positions after installation;

fig. 14 is a partial front view of the second embodiment of the present invention in a closed state and with a part of the housing hidden.

Detailed Description

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

Embodiment one, shown in fig. 1 to 9, a circuit breaker convenient to peg graft, including casing 1, circuit board 2 is equipped with in the casing 1, and the one end of casing 1 is equipped with signal interface 1a, signal interface 1a includes five elastic component 3 that can electrically conduct and sets up the recess 11 in 1 one end of casing, and the one end of every elastic component 3 is equipped with contact 31, and the other end of every elastic component 3 links firmly on circuit board 2, and every elastic component 3 is equipped with contact 31 one end and is in recess 11, and the circuit breaker is through this recess 11 grafting generating line row 4, is equipped with five conducting circuits 41 on the generating line row 4, and contact 31 on every elastic component 3 and one of them conducting circuit 41 contact conduction on the generating line row 4 switch on. The bus bar 4 may be a plurality of copper conductive traces disposed on the PCB.

Preferably, the signal interface 1a is a communication and power supply interface, and the bus bar 4 provides a control signal and power supply for the circuit board 2 through five elastic members 3.

One end of each elastic element 3 is bent to form a U-shaped part, and the U-shaped part is the contact 31; the other end of each elastic element 3 is bent to form a connecting part 32, and the connecting part 32 is fixedly connected to the circuit board 2 in a welding manner; the middle part of each elastic element 3 is bent twice to form an elastic reinforcing part 33 so as to increase the elasticity of the elastic element 3, so that the contact 31 of the elastic element 3 is in closer contact with the conductive circuit 41 on the bus bar 4, and the conductivity is improved; the connecting portion 32 and the U-shaped portion are on the same side of the body of the elastic member 3.

Five contacts 31 on the elastic element 3 are arranged in a step shape, and five conductive circuits 41 on the bus bar 4 are arranged in parallel. The housing 1 is provided with a plurality of limiting convex parts 10 near the groove 11, and each limiting convex part 10 clamps one contact 31. So as to ensure that the contact 31 can be accurately contacted with the conductive circuit 41 on the bus bar 4, and improve the reliability of conduction.

The groove 11 is a U-shaped groove in general, and the bottom of the groove 11 is in contact with one side of the bus bar 4 for limiting; the opening part of the groove 11 is provided with a splayed chamfer 12. So as to facilitate the snapping-in of the bus bar 4.

The groove 11 is provided with a plurality of arc-shaped convex parts 13 at the side opposite to the contact 31 on the elastic element 3. To reduce the frictional force of the bus bar 4 jamming.

The circuit board 2 comprises a main circuit board 21 and an auxiliary circuit board 22, the main circuit board 21 and the auxiliary circuit board 22 can both adopt PCB circuit boards, the auxiliary circuit board 22 is vertically and fixedly connected with the main circuit board 21, and the other end of each elastic element 3 is fixedly connected to the auxiliary circuit board 22. Therefore, the other end of each elastic piece 3 is convenient to be fixedly connected with the circuit board 3, and the circuit board 2 is convenient to be arranged in the shell 1.

A displaceable handle 5 is arranged at the other end of the shell 1, a contact mechanism of the circuit breaker can be switched on by pressing the handle 5, a safety piece 6 is arranged in the shell 1 and is close to the handle 5, the middle part of the safety piece 6 is pivoted on the shell 1, one end of the safety piece 6 is provided with an elastic part 61, the elastic part 61 is abutted against the shell 1, the shell 1 is provided with a through hole 14 close to the safety piece 6, the safety piece 6 is provided with a pressing convex part 62, and the pressing convex part 62 is positioned on the through hole 14; when the pressing protrusion 62 protrudes out of the housing 1, the middle portion of the handle 5 is provided with a limit protrusion 51, and when the circuit breaker is in a closed state, the limit protrusion 51 abuts against the other end of the safety member 6, so that the pressing protrusion 62 cannot be pressed into the housing 1. The pressing protrusion 62 is further provided with a pressing guide slope 621.

As further shown in fig. 8, the safety member 6 is further provided with a shoulder 63 at the middle portion, and the shoulder 63 is engaged with the limit protrusion 51, so that when the handle 5 is pulled out, the shoulder 63 can be driven by the limit protrusion 51 to rotate the safety member 6, so that the pressing protrusion 62 can be retracted into the through hole 14. Therefore, after the handle of the breaker is pulled outwards again to open the brake, the breaker can be conveniently detached from the cabinet.

An upper terminal 1b and a lower terminal 1c, which are respectively a positive pole and a negative pole, are further arranged on the housing 1 on the upper side and the lower side of the signal interface 1a, and are used for transmitting electric energy.

As further shown in fig. 3 and 4, the circuit breaker of this embodiment is plugged into the bus bar 4 through the groove 11, and the contacts 31 on the five elastic members 3 are respectively in contact with the five conductive traces 41 on the bus bar 4.

As further shown in fig. 8, the handle 5 is not pressed down, the circuit breaker is in the open state, and at this time, the limiting protrusion 51 on the handle 5 does not abut against the other end of the safety element 6, the safety element 6 can rotate, and the pressing protrusion 62 can be pressed into the housing 1, so that the circuit breaker can be smoothly installed into the cabinet. As shown in fig. 10, when the handle 5 is pressed into the breaker and is in a closed state, the limiting protrusion 51 on the handle 5 abuts against the other end of the safety element 6, so that the pressing protrusion 62 of the safety element 6 cannot be pressed into the housing 1, and the safety element 6 cannot rotate, so that the breaker cannot be installed in a cabinet, and the breaker is prevented from being hot-plugged in and out in the closed state, which affects installation safety.

After the circuit breaker is connected with the bus bar 4, the pressing convex part 62 of the safety piece 6 can be utilized to be connected with the cabinet in a preset matching hole in a clamping mode, so that the circuit breaker is stably connected with the cabinet.

In the second embodiment, as shown in fig. 11 to 13, a circuit breaker with a plug-in function is different from the first embodiment in that the handle 5 and the safety member 6 have different structures, when the pressing protrusion 62 of the safety member 6 protrudes out of the housing 1, the handle 5 is provided with a shoulder 52, and the other end of the safety member 6 abuts against the shoulder 52 of the handle 5, so that the handle 5 cannot be pressed to close. This ensures that the circuit breaker is in the open position when not installed in the cabinet.

As shown in fig. 11 and 14, when the circuit breaker is installed in the cabinet, the pressing protrusion 62 of the safety element 6 is pressed, the safety element 6 rotates, the pressing protrusion 62 is pressed into the housing 1, the other end of the safety element 6 is separated from the handle 5, the handle 5 can be pressed to close the circuit breaker, and the handle 5 can drive the contact mechanism 16 to close the circuit breaker through the operating mechanism 15 in the housing 1.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a circuit breaker convenient to peg graft, includes the casing, is equipped with the circuit board in the casing, and the one end of casing is equipped with signal interface, its characterized in that: the signal interface comprises a plurality of conductive elastic pieces and a groove arranged at one end of the shell, one end of each elastic piece is provided with a contact, the other end of each elastic piece is fixedly connected to the circuit board, one end of each elastic piece, provided with a contact, is positioned in the groove, and each elastic piece is in contact conduction with an external conductive circuit through the contact.

2. The circuit breaker of claim 1, wherein: one end of each elastic piece is bent to form a U-shaped part, and the U-shaped part is the contact; and the other end of each elastic piece is bent to form a connecting part, and the connecting parts are fixedly connected to the circuit board in a welding manner.

3. The circuit breaker of claim 1, wherein: the middle part of each elastic part is bent twice to form an elastic reinforcing part.

4. The circuit breaker of claim 1, wherein: many outside conducting circuits set up simultaneously on a generating line row, and the circuit breaker is arranged through this recess grafting generating line.

5. The circuit breaker of claim 4, wherein: the contacts on the elastic pieces are arranged in a step shape, and the conducting circuits on the bus bar are arranged in parallel.

6. The circuit breaker of claim 5, wherein: the shell is provided with a plurality of limiting convex parts at the positions close to the grooves, and each limiting convex part clamps one contact.

7. The circuit breaker of claim 4, wherein: the groove is a U-shaped groove, and the bottom of the groove is in contact with one side of the bus bar for limiting; the opening part of the groove is provided with a splayed chamfer; and a plurality of arc-shaped convex parts are arranged on one side of the groove opposite to the upper contact of the elastic piece.

8. The circuit breaker of claim 1, wherein: the circuit board comprises a main circuit board and an auxiliary circuit board, the auxiliary circuit board is vertically and fixedly connected with the main circuit board, and the other end of each elastic element is fixedly connected to the auxiliary circuit board.

9. A circuit breaker according to any one of claims 1 to 8, wherein: the other end of the shell is provided with a movable handle, a contact mechanism of the circuit breaker can be switched on by pressing the handle, a safety piece is arranged in the shell and close to the handle, the middle part of the safety piece is pivoted on the shell, one end of the safety piece is provided with an elastic part, the elastic part is abutted against the shell, the shell is provided with a through hole close to the safety piece, the safety piece is provided with a pressing convex part, and the pressing convex part is positioned on the through hole; when the pressing convex part protrudes out of the shell, the other end of the safety part props against the handle to enable the handle not to be pressed to be switched on, or when the breaker is in a switching-on state, the handle props against the other end of the safety part to enable the pressing convex part not to be pressed into the shell.

10. The circuit breaker of claim 9, wherein: the pressing convex part is provided with a pressing guide inclined plane.

11. The circuit breaker of claim 9, wherein: when the pressing convex part protrudes out of the shell, the handle is provided with a shoulder, the other end of the safety part props against the shoulder to enable the handle to be incapable of being pressed to be switched on, or the middle part of the handle is provided with a limiting convex part, and the limiting convex part props against the other end of the safety part to enable the pressing convex part to be incapable of being pressed into the shell when the breaker is in a switching-on state.