CN213691907U - Miniature circuit breaker - Google Patents

Abstract

The utility model discloses a miniature circuit breaker, including the circuit breaker body, the wiring groove has been seted up to the bilateral symmetry of circuit breaker body, it is fixed with the terminal to peg graft on the wiring groove, the bottom center department of circuit breaker body is provided with locating component, the terminal includes connection terminal, metal wire reel, conductive seat, metal elastic bulge, external screw thread pipe, silica gel filling layer and crosses the line hole, the inside at the wiring groove is fixed in the connection terminal grafting of connection terminal, the bottom center department of wiring groove is fixed with conductive seat, the bottom center department of conductive seat installs metal elastic bulge, the contact of the conductive head of the bottom inner wall of metal elastic bulge and wiring groove, the top of connection terminal connects soon and is fixed with external screw thread pipe. The utility model discloses novel structure thinks about ingeniously, has not only guaranteed line connection's stability, and the end position department of wiring moreover uses the silica gel filling layer parcel, can play waterproof and dirt-proof effect, the danger of the use that reduces.

Description

Miniature circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically is miniature circuit breaker.

Background

A Micro Circuit Breaker, abbreviated as MCB (Micro Circuit Breaker/Miniature Circuit Breaker), is a terminal protection apparatus most widely used in a power distribution device of a building electrical terminal. The protection circuit is used for single-phase and three-phase short circuit, overload, overvoltage and the like below 125A, and comprises four types of a single pole 1P, a two-pole 2P, a three-pole 3P, a four-pole 4P and the like.

At present, the installed metal wiring terminal is completely exposed to the air, and is in contact with liquid, dust, corrosive gas, metal debris and human bodies, so that danger and injury are caused. Therefore, it is necessary to design a miniature circuit breaker.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a miniature circuit breaker, this miniature circuit breaker, novel structure thinks about ingeniously, has not only guaranteed line connection's stability, and the end position department of wiring moreover uses the silica gel filling layer parcel, can play waterproof and dirt-proof effect, and the use of reduction is dangerous.

In order to achieve the above object, the utility model provides a following technical scheme: the miniature circuit breaker comprises a circuit breaker body, wherein wiring grooves are symmetrically formed in two sides of the circuit breaker body, wiring terminals are fixedly inserted in the wiring grooves, and a positioning assembly is arranged at the center of the bottom of the circuit breaker body;

the terminal includes wire holder, metal wire reel, electrically conductive seat, metal elastic bulge, external screw thread pipe, silica gel filling layer and crosses the line hole, the wire holder is pegged graft and is fixed in the inside of wire connection groove, the bottom center department of wire connection groove is fixed with electrically conductive seat, the bottom center department of electrically conductive seat installs metal elastic bulge, the protruding electrically conductive head contact with the bottom inner wall of wire connection groove of metal elastic bulge, the top of wire holder connects soon and is fixed with external screw thread pipe, metal wire reel is installed to the bottom of external screw thread pipe, the inside packing of external screw thread pipe has the silica gel filling layer, the center department of silica gel filling layer and metal wire reel has seted up the line hole.

Preferably, the metal wire spool, the conductive seat, the metal elastic bulge and the conductive head are all made of metal copper materials.

Preferably, a bayonet is opened on one side of the top of the wire holder, and a buckle matched with the bayonet for use is installed on one side of the circuit breaker body, which is located in the wire connecting groove.

Preferably, locating component includes draw-in groove, flexible groove, supporting spring, card post and slide, the bottom center department at the circuit breaker body is seted up to the draw-in groove, flexible groove has all been seted up to the inner wall both sides of draw-in groove, the inside sliding connection in flexible groove has the slide, the bottom of slide is passed through supporting spring and is connected with the bottom in flexible groove, the top center department of slide is fixed with the card post that passes flexible groove.

Preferably, the top of the clamping column is spherical.

The utility model has the advantages that:

1. the metal wire spool is driven to be separated from the wire holder by rotating the external threaded pipe, the insulating external wrapping layer is removed from one end of the wire, after the wire is inserted into the wire passing hole, the end, without an insulating layer, of the wire is wound on the metal wire spool, the metal wire spool is inserted into the wire holder and fixed through the screwed external threaded pipe, and finally the connected terminal is inserted and fixed into the wire connecting groove, so that the stability of line connection is ensured, and the end part of the wire is wrapped by the silica gel filling layer, so that the waterproof and dustproof effects can be achieved, and the use risk is reduced;

2. during installation, the clamping groove is clamped to the positioning seat at the installation position, the clamping columns are clamped inside the clamping holes at two sides of the positioning seat under the action of the supporting spring, the stability of clamping fixation is guaranteed, and convenience in installation and disassembly is achieved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic sectional plan view of the terminal of the present invention;

fig. 3 is a schematic top plan view of the circuit breaker body of the present invention;

FIG. 4 is a schematic view of the planar structure of the positioning assembly of the present invention;

reference numbers in the figures: 1. a circuit breaker body; 2. a wiring slot; 3. a terminal end; 4. buckling; 5. a positioning assembly; 6. a wire holder; 7. a bayonet; 8. a metal wire spool; 9. a conductive seat; 10. a metal elastic bulge; 11. an externally threaded tube; 12. a silica gel filling layer; 13. a wire passing hole; 14. a conductive head; 15. a card slot; 16. a telescopic groove; 17. a support spring; 18. clamping the column; 19. a slide board.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying fig. 1-4.

Given by fig. 1-4, the utility model provides the following technical scheme: the miniature circuit breaker comprises a circuit breaker body 1, wiring grooves 2 are symmetrically formed in two sides of the circuit breaker body 1, wiring terminals 3 are fixedly inserted in the wiring grooves 2, and a positioning assembly 5 is arranged at the center of the bottom of the circuit breaker body 1;

the wire connecting terminal 3 comprises a wire holder 6, a metal wire reel 8, a conductive seat 9, a metal elastic bulge 10, an external thread tube 11, a silica gel filling layer 12 and a wire passing hole 13, wherein the wire holder 6 is fixedly inserted in the wire slot 2, the conductive seat 9 is fixed at the center of the bottom of the wire slot 2, the metal elastic bulge 10 is installed at the center of the bottom of the conductive seat 9, the metal elastic bulge 10 is contacted with a conductive head 14 on the inner wall of the bottom of the wire slot 2, the external thread tube 11 is fixedly screwed at the top of the wire holder 6, the metal wire reel 8 is installed at the bottom end of the external thread tube 11, the silica gel filling layer 12 is filled in the external thread tube 11, the wire passing hole 13 is formed at the centers of the silica gel filling layer 12 and the metal wire reel 8, the metal wire reel 8 is driven to be separated from the wire holder 6 by rotating the external thread tube 11, the insulating external wrapping layer is removed at one end of an electric, make the one end winding that the electric wire does not have the insulating layer on metal wire reel 8, peg graft the inside of connection terminal 6 with metal wire reel 8 again to fix through the external screw thread pipe 11 of screwing in, fix the inside of wiring groove 2 with the connection of connecting terminal 3 grafting again at last, not only guaranteed line connection's stability, the end position department of wiring in addition uses silica gel filling layer 12 parcel, can play waterproof and dirt-proof effect, the danger of use that reduces.

The metal wire spool 8, the conductive seat 9, the metal elastic bulge 10 and the conductive head 14 are all made of metal copper materials, and the conductivity is good.

Bayonet socket 7 has been seted up to top one side of connection terminal 6, and the buckle 4 that uses with bayonet socket 7 cooperation is installed to one side that lies in wiring groove 2 on the circuit breaker body 1, pegs graft wiring groove 2's inside back with terminal 3, uses buckle 4 card to go into the inside of bayonet socket 7 to the stability of connecting has been guaranteed.

Locating component 5 includes draw-in groove 15, flexible groove 16, supporting spring 17, card post 18 and slide 19, draw-in groove 15 sets up in the bottom center department of circuit breaker body 1, flexible groove 16 has all been seted up to the inner wall both sides of draw-in groove 15, the inside sliding connection in flexible groove 16 has slide 19, slide 19's bottom is passed through supporting spring 17 and is connected with flexible groove 16's bottom, slide 19's top center department is fixed with the card post 18 that passes flexible groove 16, during the installation, on the positioning seat at installation position is connected to draw-in groove 15 joint through setting up, under supporting spring 17's effect, make card post 18 chucking to the downthehole portion of card of positioning seat both sides, the fixed stability of joint has not only been guaranteed, and the installation is dismantled conveniently.

The top of the snap post 18 is spherical.

The utility model discloses during the use, through rotatory external screw thread pipe 11, drive metal wire reel 8 and connection terminal 6 and break away from, remove insulating outer wrapping layer with the one end of electric wire, peg graft behind the inside of line hole 13, make the one end of electric wire non-insulating layer wind on metal wire reel 8, peg graft the inside of connection terminal 6 with metal wire reel 8 again, and fix through the external screw thread pipe 11 of spin-on, peg graft the wiring end 3 that connects well and fix to the inside of wiring groove 2 at last again, not only guarantee the stability of line connection, the end position of wiring in addition uses silica gel filling layer 12 parcel, can play waterproof and dustproof effect, the danger of use that reduces;

during installation, the clamping groove 15 is clamped to the positioning seat of the installation part, and under the action of the supporting spring 17, the clamping column 18 is clamped inside the clamping holes on two sides of the positioning seat, so that the stability of clamping fixation is guaranteed, and the installation and the disassembly are convenient.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. Miniature circuit breaker, including circuit breaker body (1), its characterized in that: wiring grooves (2) are symmetrically formed in two sides of the circuit breaker body (1), wiring terminals (3) are fixedly connected to the wiring grooves (2) in an inserted mode, and a positioning assembly (5) is arranged at the center of the bottom of the circuit breaker body (1);

the wiring terminal (3) comprises a wiring seat (6), a metal wire reel (8), a conductive seat (9), a metal elastic bulge (10), an external thread tube (11), a silica gel filling layer (12) and a wire passing hole (13), the wire holder (6) is inserted and fixed in the wire slot (2), the conductive seat (9) is fixed at the center of the bottom of the wire slot (2), a metal elastic bulge (10) is arranged at the center of the bottom of the conductive seat (9), the metal elastic bulge (10) is contacted with a conductive head (14) on the inner wall of the bottom of the wiring groove (2), the top of the wire holder (6) is screwed and fixed with an external thread tube (11), the bottom end of the external thread tube (11) is provided with a metal wire reel (8), the inside packing of external screw thread pipe (11) has silica gel filling layer (12), line hole (13) have been seted up in the center department of silica gel filling layer (12) and metal wire reel (8).

2. The miniature circuit breaker of claim 1, wherein: the metal wire spool (8), the conductive seat (9), the metal elastic bulge (10) and the conductive head (14) are all metal copper material components.

3. The miniature circuit breaker of claim 1, wherein: bayonet socket (7) have been seted up to top one side of connection terminal (6), buckle (4) that use with bayonet socket (7) cooperation are installed to the one side that lies in wiring groove (2) on circuit breaker body (1).

4. The miniature circuit breaker of claim 1, wherein: locating component (5) include draw-in groove (15), flexible groove (16), supporting spring (17), card post (18) and slide (19), the bottom center department at circuit breaker body (1) is seted up in draw-in groove (15), flexible groove (16) have all been seted up to the inner wall both sides of draw-in groove (15), the inside sliding connection in flexible groove (16) has slide (19), the bottom of slide (19) is passed through supporting spring (17) and is connected with the bottom in flexible groove (16), the top center department of slide (19) is fixed with card post (18) that pass flexible groove (16).

5. The miniature circuit breaker of claim 4, wherein: the top of the clamping column (18) is spherical.

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