CN211045359U

CN211045359U - Automatic time-delay circuit breaker

Info

Publication number: CN211045359U
Application number: CN201922024202.0U
Authority: CN
Inventors: 颜建丰
Original assignee: Hangzhou Chengxiang Electric Co ltd
Current assignee: Hangzhou Chengxiang Electric Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-17
Anticipated expiration: 2029-11-21

Abstract

The utility model relates to the technical field of circuit breakers, in particular to an automatic time-delay circuit breaker, which comprises a mechanical area, a circuit area and a shell, wherein the mechanical area and the circuit area are arranged inside the shell, the mechanical area comprises a handle, a double-buckle beam and a main shaft beam, the handle is arranged at one end of the double-buckle beam through a shaft pin, one side of the main shaft beam is arranged at one side of the double-buckle beam through the shaft pin, the circuit area comprises an arc extinguishing component, an electromagnetic switch, a tripping component, a wiring end A, a wiring end B, a bimetallic strip, a connecting iron strip A and a static contact strip, the arc extinguishing component, the electromagnetic switch and the tripping component are electrically connected in sequence, the wiring end A and the wiring end B are respectively arranged at two ends of the circuit area, one end of the bimetallic strip is welded at one end of the connecting iron strip, but also can extinguish the electric arc and simultaneously achieve the effects of preventing burning out and firing.

Description

Automatic time-delay circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically says to an automatic time delay circuit breaker.

Background

The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, a motor and the like, automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above insufficiency, the utility model provides an automatic time-delay circuit breaker, not only can automatic time-delay circuit-breaking tripping operation, can extinguish electric arc moreover, reach the effect that prevents to burn out the thing and catch fire simultaneously.

The utility model discloses a realize like this, construct an automatic time delay circuit breaker, including mechanical area, circuit area and casing, mechanical area and circuit area are installed inside the casing, mechanical area includes the handle, double-buckle roof beam and main shaft roof beam, the handle passes through the pivot to be installed in double-buckle roof beam one end, main shaft roof beam one side is installed in double-buckle roof beam one side through the pivot, circuit area includes the arc extinguishing subassembly, electromagnetic switch, trip assembly, wiring end A, wiring end B, the bimetallic strip, the connection iron sheet, connection iron sheet A well and quiet contact piece, the arc extinguishing subassembly, electromagnetic switch and trip assembly electrical connection in proper order, wiring end A, wiring end B locate circuit area both ends respectively, bimetallic strip one end welds in connection iron sheet one end, the bimetallic strip other end contacts in connection iron sheet A one end, quiet one end welds in connection iron sheet A other end, wiring end A includes the connecting wire, connecting copper sheet and, one end of the connecting lead is electrically connected with one side of the connecting copper sheet, one end of the soft copper wire group is electrically connected with the other side of the connecting copper sheet, the wiring terminal B is provided with a main lead, the main lead is provided with a sub-wire A and a sub-wire B, and the sub-wire A is electrically connected with the sub-wire B.

Furthermore, a movable contact rod is installed at one end of the main shaft beam, and a circuit is connected or disconnected through the movable contact rod.

Further, the arc extinguishing subassembly includes arc extinguishing box, arc extinguishing electrode and magnetic conduction piece, arc extinguishing electrode one end and arc extinguishing box electric connection, and the magnetic conduction piece is installed in arc extinguishing electrode below, and the arc extinguishing box includes deionization grid and frame, and deionization grid imbeds inside the frame, introduces the arc extinguishing box with electric arc through the magnetic conduction piece, cuts arc current through a plurality of ion grids, and the segmentation arc extinguishing prevents that the circuit from causing the internal component to damage when the disconnection.

Further, electromagnetic switch is including supporting iron sheet, spring leaf, permanent-magnet piece, pull rod, cover shell and iron core, and the permanent-magnet piece install in spring leaf one side, pull rod pass through screwed connection in permanent-magnet piece one side, and spring leaf one end welds in supporting iron sheet one end, and the iron core inlays in the cover shell inside, and during the circuit short circuit, the outside coil electric current of cover shell sharply increases, and the iron core produces the electromagnetism and catches the spring leaf, electromagnetic switch closed circuit.

Further, the dropout subassembly includes cover shell A, the wire coil, the iron plate, bracing piece and spring, the wire coil twines on cover shell A surface, the iron plate is placed inside cover shell A, bracing piece one end is embedded in iron plate one end, the spring nestification is outside the bracing piece, during the short circuit, when the electric current increases in the twinkling of an eye, the electric current variation on the wire coil changes, and then produces the magnetic field that increases, the iron plate of coil the inside can hinder the increase in magnetic field, because stopping of cover shell A again, make the iron plate can only move right, overcome spring reaction force.

The utility model discloses an improve and provide an automatic time delay circuit breaker here, compare with current circuit breaker, have following advantage: not only can automatic time delay trip that opens circuit, can extinguish electric arc moreover, reach the effect that prevents to burn out the thing and catch fire simultaneously, the concrete embodiment is:

the method has the advantages that: when the circuit is short-circuited, when the current is increased instantly, the coil wound by the sub-wire A enables the sleeve shell to generate a huge magnetic field, the iron core generates magnetic attraction to attract the spring piece, the electromagnetic switch closes the passage to enable the tripping assembly circuit to be electrified, the tripping assembly circuit and the bimetallic strip circuit form a parallel circuit, the current value passed by the bimetallic strip circuit is reduced, the bimetallic strip is slowly bent to be slowly separated from the connection of the iron strip A, the whole circuit area is still a passage due to the electrification of the tripping assembly circuit until the bimetallic strip is separated from the connection of the iron strip A, the tripping assembly circuit is a single series circuit, the current is sharply increased, the current variation on the lead ring is large, the increased magnetic field is generated, the iron block in the coil can block the magnetic field, the iron block can only move rightwards due to the blocking of the sleeve shell A, the spring reaction force is overcome to enable the movable contact rod to leave the static contact piece through, thereby delaying the time for tripping the circuit,

the method has the advantages that: the arc generated by the disconnection and connection of the contacts is led into the arc extinguishing box through the magnetic conductive sheets, the arc current is cut off through the ion grids, the arc is extinguished in sections, the damage of internal elements caused by the disconnection of the circuit is prevented,

the method has the advantages that: the circuit breaker can achieve the purposes of preventing burning out and firing by delaying tripping and eliminating electric arcs generated by disconnecting contacts inside the circuit breaker.

Drawings

Fig. 1 is a schematic diagram of the structure of an automatic time-delay circuit breaker of the present invention.

Fig. 2 is a partial enlarged view B of the spring plate of fig. 1 according to the present invention.

Fig. 3 is a partial enlarged view a of the bimetal of fig. 1 according to the present invention.

Fig. 4 is a schematic structural diagram of the trip assembly of the present invention.

Fig. 5 is a schematic structural view of the jacket 225 of the present invention.

The figure illustrates the format: the circuit comprises a mechanical area 1, a circuit area 2, a shell 3, a handle 11, a double buckle beam 12, a main shaft beam 13, a movable contact rod 131, an arc extinguishing component 21, an electromagnetic switch 22, a tripping component 23, a terminal A24, a terminal B25, a bimetallic strip 26, a connecting iron sheet 27, a connecting iron sheet A28, a static contact sheet 29, an arc extinguishing box 211, an arc extinguishing electrode 212, a magnetic conductive sheet 213, a deionization grid 2111, an outer frame 2112, a supporting iron sheet 221, a spring sheet 224, a permanent magnetic sheet 222, a pull rod 223, a casing 225, an iron core 226, a casing A231, a conducting coil 232, an iron block 233, a supporting rod 234, a spring 235, a connecting conducting wire 241, a connecting copper sheet 242, a soft copper wire group 243, a main conducting wire 251, a sub-wire A2511.

Detailed Description

The present invention will be described in detail below with reference to the attached drawings, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention; furthermore, the terms "first," "second," "third," "upper, lower, left, right," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides an automatic time-delay circuit breaker through the improvement, as shown in the attached drawing of the specification, can be implemented as follows; including mechanical zone 1, circuit zone 2 and casing 3, mechanical zone 1 and circuit zone 2 are installed inside casing 3, mechanical zone 1 includes handle 11, double buckle roof beam 12 and main shaft roof beam 13, handle 11 passes through the pivot to be installed in double buckle roof beam 12 one end, main shaft roof beam 13 one side is installed in double buckle roof beam 12 one side through the pivot, circuit zone 2 includes arc extinguishing component 21, electromagnetic switch 22, tripping component 23, wiring end A24, wiring end B25, bimetallic strip 26, connect iron sheet 27, connect iron sheet A28 well and quiet contact piece 29, arc extinguishing component 21, electromagnetic switch 22 and tripping component 23 be electric connection in proper order, wiring end A24, wiring end B25 locate circuit zone 2 both ends respectively, bimetallic strip 26 one end welds in connection iron sheet 27 one end, bimetallic strip 26 other end contacts in connection iron sheet A28 one end, quiet contact piece 29 one end welds in connection iron sheet A28 other end, wiring end A24 includes connecting wire 241, circuit board, The copper sheet 242 and the soft copper wire group 243 are connected, one end of the connecting lead 241 is electrically connected with one side of the connecting copper sheet 242, one end of the soft copper wire group 243 is electrically connected with the other side of the connecting copper sheet 242, the terminal B25 is provided with a main lead 251, the main lead 251 is provided with a sub-wire A2511 and a sub-wire B2512, and the sub-wire A2511 is electrically connected with the sub-wire B2512.

More specifically, a movable contact rod 131 is mounted on one end of the main shaft beam 13, and the circuit is connected or disconnected by the movable contact rod 131.

More specifically, the arc extinguishing assembly 21 includes the arc extinguishing box 211, the arc extinguishing electrode 212 and the magnetic conduction piece 213, the arc extinguishing electrode 212 one end and the arc extinguishing box 211 electric connection, the magnetic conduction piece 213 is installed in the arc extinguishing electrode 212 below, the arc extinguishing box 211 includes deionization grid 2111 and frame 2112, deionization grid 2111 is embedded inside frame 2112, introduce electric arc into the arc extinguishing box 211 through the magnetic conduction piece 213, cut off the arc current through a plurality of ion grids 2111, the segmentation arc extinguishing, prevent that the circuit from causing the damage of internal component when breaking.

More specifically, the electromagnetic switch 22 includes a supporting iron piece 221, a spring piece 224, a permanent magnet piece 222, a pull rod 223, a sleeve 225 and an iron core 226, the permanent magnet piece 222 is mounted on one side of the spring piece 224, the pull rod 223 is connected to one side of the permanent magnet piece 222 through a screw, one end of the spring piece 224 is welded to one end of the supporting iron piece 221, the iron core 226 is embedded in the sleeve 225, when a circuit is short-circuited, the current of a coil outside the sleeve 225 is sharply increased, the iron core 226 generates electromagnetism to attract the spring piece 224, and the electromagnetic switch 22 closes the circuit.

More specifically, the tripping assembly 23 includes a casing a231, a wire coil 232, an iron block 233, a support rod 234 and a spring 235, wherein the wire coil 232 is wound on the surface of the casing a231, the iron block 233 is placed inside the casing a231, one end of the support rod 234 is embedded into one end of the iron block 233, and the spring 235 is nested outside the support rod 234.

The working principle of the automatic time-delay circuit breaker is as follows: when the circuit is short-circuited, the current is increased instantly, at the same time, the coil wound by the sub-line a2511 makes the sleeve 225 generate a huge magnetic field, the iron core 226 generates magnetic attraction to attract the spring piece 224 down, the electromagnetic switch 22 closes the circuit, so that the circuit of the tripping assembly 23 is electrified, the circuit of the tripping assembly 23 and the circuit of the bimetallic strip 26 form a parallel circuit, the current value passed by the circuit of the bimetallic strip 26 is reduced, meanwhile, the bimetallic strip 26 is slowly bent and is slowly separated from the connection of the connecting iron piece a28, but the whole circuit area 2 is still in the circuit because the circuit of the tripping assembly 23 is electrified and is not tripped immediately, until the bimetallic strip 26 is separated from the connection of the connecting iron piece a28, the circuit of the tripping assembly 23 becomes a single series circuit, the current is increased, the current change on the conductive coil 232 is large, and then an increased magnetic field is generated, the iron block 233 in the, the iron block 233 can only move rightwards, the main shaft beam 13 is pushed through the supporting rod 234 against the reaction force of the spring 236, the movable contact rod 131 is separated from the fixed contact piece 29, the time delay tripping and the circuit breaking are realized, when the handle 11 is pushed to be closed, the pull rod 223 is required to be lifted, the spring piece 224 is separated and disconnected from the iron core 226, the magnetic force of the permanent magnet piece 222 is not enough to enable the spring piece 224 to be connected with the iron core 226 independently, and the arc extinguishing assembly 21 is used for preventing the electric arc generated when the movable contact rod 131 is disconnected from the fixed contact piece 29 from damaging electronic components.

In conclusion; automatic time delay circuit breaker compares with current circuit breaker, not only can automatic time delay trip that opens circuit, can extinguish electric arc moreover, reaches the effect that prevents to burn out the thing and get on fire simultaneously.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic time delay circuit breaker, its characterized in that: including mechanical zone (1), circuit area (2) and casing (3), mechanical zone (1) and circuit area (2) install in inside casing (3), mechanical zone (1) including handle (11), two knot roof beams (12) and main shaft roof beam (13), handle (11) through the pivot install in two knot roof beam (12) one end, main shaft roof beam (13) one side is installed in two knot roof beams (12) one side through the pivot, circuit area (2) including arc extinguishing component (21), electromagnetic switch (22), dropout subassembly (23), wiring end A (24), wiring end B (25), bimetallic strip (26), connection iron sheet (27), connection iron sheet A (28) well with quiet contact piece (29), arc extinguishing component (21), electromagnetic switch (22) and dropout subassembly (23) electric connection in proper order, wiring end A (24), wiring end B (25) locate circuit area (2) both ends respectively, one end of the bimetallic strip (26) is welded at one end of the connecting iron sheet (27), the other end of the bimetallic strip (26) is in contact with one end of the connecting iron sheet A (28), one end of the static contact sheet (29) is welded at the other end of the connecting iron sheet A (28), the terminal A (24) comprises a connecting lead (241), a connecting copper sheet (242) and a soft copper wire group (243), one end of the connecting lead (241) is electrically connected with one side of the connecting copper sheet (242), one end of the soft copper wire group (243) is electrically connected to the other side of the connecting copper sheet (242), the terminal B (25) is provided with a main lead (251), the main lead (251) is provided with a sub-line A (2511) and a sub-line B (2512), and the sub-line A (2511) is electrically connected with the sub-line B (.

2. The automatic time delay circuit breaker as claimed in claim 1, wherein: one end of the main shaft beam (13) is provided with a movable contact rod (131).

3. The automatic time delay circuit breaker as claimed in claim 1, wherein: arc extinguishing subassembly (21) are including arc extinguishing box (211), arc extinguishing electrode (212) and magnetic conduction piece (213), arc extinguishing electrode (212) one end with arc extinguishing box (211) electric connection, magnetic conduction piece (213) are installed in arc extinguishing electrode (212) below, and arc extinguishing box (211) are including deionization grid (2111) and frame (2112), deionization grid (2111) imbed inside frame (2112).

4. The automatic time delay circuit breaker as claimed in claim 1, wherein: electromagnetic switch (22) including supporting iron sheet (221), spring leaf (224), permanent magnet piece (222), pull rod (223), cover shell (225) and iron core (226), install in permanent magnet piece (222) spring leaf (224) one side, pull rod (223) pass through screwed connection in permanent magnet piece (222) one side, and spring leaf (224) one end weld in support iron sheet (221) one end, iron core (226) inlay in inside cover shell (225).

5. The automatic time delay circuit breaker as claimed in claim 1, wherein: the tripping assembly (23) comprises a casing A (231), a lead coil (232), an iron block (233), a supporting rod (234) and a spring (235), wherein the lead coil (232) is wound on the surface of the casing A (231), the iron block (233) is placed inside the casing A (231), one end of the supporting rod (234) is embedded into one end of the iron block (233), and the spring (235) is nested outside the supporting rod (234).