CN212750792U

CN212750792U - Compact fuse

Info

Publication number: CN212750792U
Application number: CN202021549360.4U
Authority: CN
Inventors: 郝明
Original assignee: Shenzhen Victors Electronic Technology Co ltd
Current assignee: Shenzhen Victors Electronic Technology Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-03-19
Anticipated expiration: 2030-07-30

Abstract

The utility model relates to a circuit protection device indicates a compact fuse especially, the indicator is established on the fuse surface, the indicator includes L type mounting and micro-gap switch, L type mounting passes through the screw fixation the surface of fuse, micro-gap switch passes through the screw fixation on L type mounting. The purpose is to provide a high reliability fuse that can avoid electric arc to produce completely, can realize installing in little volume scope.

Description

Compact fuse

Technical Field

The present invention relates to circuit protection devices, and more particularly to a fuse.

Background

The fuse is an electric appliance which fuses a melt by heat generated by itself to open a circuit when a current exceeds a predetermined value.

A traditional fuse needs to be additionally provided with a K-shaped indicator, a base fixing lug needs to be additionally arranged on a fuse cover plate, the length of the extending fixing lug can cause the reduction of the external insulation distance of the fuse, and electric arcs are generated outside the fuse under the extreme breaking condition; meanwhile, the folded angle of the fixing lug is large, and the size of the indicator base increases the overall structure size of the fuse, so that the installation size is increased, and the fuse cannot be installed in a small-size space.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a compact fuse. Its main objective provides one kind and can avoid electric arc to produce completely, can realize the high reliability fuse of little volume within range installation for realizing above-mentioned purpose, the utility model discloses a technical scheme be:

the utility model provides a compact fuse, includes fuse and indicator, the indicator is established on the fuse surface, the indicator includes L type mounting and micro-gap switch, L type mounting passes through the screw fixation and is in the surface of fuse, micro-gap switch passes through the screw fixation on L type mounting.

Further, the fuse includes the fusible core and triggers the mechanism, the fusible core with it all establishes to trigger the mechanism in the fuse, the fusible core top is equipped with trigger the mechanism.

Further, the trigger mechanism comprises a thin wire, a spring and a hole cover, wherein the spring is installed in the hole cover, the thin wire is connected in the hole cover, and the thin wire penetrates through the spring and extends towards two sides, so that the spring is kept in a compressed state. The surface of the microswitch adjacent to the fuse is provided with a through hole, and the hole cover is arranged at the position of the through hole.

The fuse core is fused due to overhigh current and generates high temperature, the fuse core is disconnected with a protection circuit when fused, in addition, the high temperature enables the fine wire to be disconnected, the compressed spring recovers and the hole cover is jacked up, the hole cover is jacked up and then presses the micro switch, and therefore the alarm or the indicating lamp connected with the indicator is triggered to send out fusing reminding.

Further, the fuse still includes insulating body, contact plate and apron, the both ends of insulating body are equipped with respectively the contact plate with the apron, be equipped with the through-hole in the middle of the apron, the apron passes through the screw fixation on insulating body, one of them the contact plate is equipped with inserts formula and touches the sword, and another the contact plate is equipped with colludes formula and touches the sword, insert formula touch the sword with collude the formula and touch the sword and follow respectively the through-hole of apron stretches out, the fuse passes through collude the formula touch the sword with insert formula and touch sword access circuit.

Furthermore, a gasket is arranged between the cover plate and the insulating pipe body, and the gasket and the contact plate are not in touch with each other.

The beneficial effects of the utility model reside in that: because the indicator fixing lug of the traditional fuse is removed, the breaking force is greatly improved, the generation of an external electric arc of the fuse is completely avoided, the overall size of the fuse is reduced, the installation in a small volume range can be realized, and meanwhile, the L-shaped fixing piece is made of high-temperature-resistant and high-strength insulating materials, so that the service life of the indicator can be effectively prolonged, and the indicator is prevented from being out of order due to high temperature.

Drawings

Fig. 1 is a conventional fuse mounted with a K-type indicator.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic structural diagram of the present invention.

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

Fig. 5 is a partially enlarged view of the a-view angle of the present invention.

The reference numbers illustrate: an L-shaped fixing piece; 2. a microswitch; 3. a fusible core; 4. a thin wire; 5. a spring; 6. an orifice cover; 7. an insulating tube body; 8. a contact plate; 9. a cover plate; 10. a hook-type contact knife; 11. inserting contact knife; 12. a liner.

Detailed Description

Referring to fig. 1-4, the present invention relates to a compact fuse, including a fuse and an indicator, the indicator is disposed on the outer surface of the fuse, the indicator includes an L-shaped fixing member 1 and a micro switch 2, the L-shaped fixing member 1 is fixed on the outer surface of the fuse by screws, and the micro switch 2 is fixed on the L-shaped fixing member 1 by screws.

Because the indicator fixing lug of the traditional fuse is removed, the breaking force is greatly improved, the generation of an external electric arc of the fuse is completely avoided, the overall size of the fuse is reduced, the installation in a small volume range can be realized, and meanwhile, the L-shaped fixing piece 1 is made of high-temperature-resistant and high-strength insulating materials, so that the service life of the indicator can be effectively prolonged, and the indicator is prevented from being out of order due to high temperature.

Further, the fuse includes fusible core 3 and trigger mechanism, fusible core 3 with trigger mechanism all establishes in the fuse, 3 tops of fusible core are equipped with trigger mechanism.

Further, the trigger mechanism comprises a thin wire 4, a spring 5 and a hole cover 6, wherein the spring 5 is installed in the hole cover 6, the thin wire 4 is connected in the hole cover 6, and the thin wire 4 penetrates through the spring 5 and extends towards two sides, so that the spring 5 is kept in a compressed state. The surface of the microswitch 2 adjacent to the fuse is provided with a through hole, and the hole cover 6 is arranged at the position of the through hole.

The indicator is connected with an alarm or an indicator light, when the current in the circuit is too large, the fusible core 3 is fused due to too high current and generates high temperature, the circuit is disconnected with a protection circuit when the fusible core 3 is fused, in addition, the fine wire 4 is disconnected due to high temperature, the compressed spring 5 is recovered, the hole cover 6 is jacked and then pressed down the microswitch 2, and therefore the alarm or the indicator light connected with the indicator is triggered to send out fusing reminding.

Further, the fuse still includes insulating body 7, contact plate 8 and apron 9, the both ends of insulating body 7 are equipped with respectively contact plate 8 with apron 9, be equipped with the through-hole in the middle of the apron 9, apron 9 passes through the fix with screw on insulating body 7, one of them contact plate 8 is equipped with to insert formula and touches sword 11, another the contact plate is equipped with colludes formula and touches sword 10, insert formula and touch sword 11 with colluding formula and touch sword 10 and follow respectively the through-hole of apron 9 stretches out, the fuse passes through collude formula touch sword 10 with insert formula and touch sword 11 access circuit.

Further, a gasket 12 is disposed between the cover plate 9 and the insulating tube 7, and the gasket 12 and the contact plate 8 do not touch each other.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. A compact fuse comprising a fuse and an indicator, characterized in that: the indicator is established on the fuse surface, the indicator includes L type mounting and micro-gap switch, L type mounting passes through the screw fixation and is in the surface of fuse, micro-gap switch passes through the screw fixation on L type mounting.

2. The compact fuse of claim 1, wherein: the fuse includes fusible core and trigger mechanism, the fusible core with the trigger mechanism all establishes in the fuse, the fusible core top is equipped with the trigger mechanism.

3. The compact fuse of claim 2, wherein: the trigger mechanism comprises a fine wire, a spring and a hole cover, wherein the spring is installed in the hole cover, the fine wire is connected in the hole cover, and the fine wire penetrates through the spring and extends towards two sides to keep the spring in a compressed state; the surface of the microswitch adjacent to the fuse is provided with a through hole, and the hole cover is arranged at the position of the through hole.

4. The compact fuse of claim 1, wherein: the fuse further comprises an insulating tube body, a contact plate and a cover plate, wherein the two ends of the insulating tube body are respectively provided with the contact plate and the cover plate, a through hole is formed in the middle of the cover plate, the cover plate is fixed on the insulating tube body through screws, one of the contact plate is provided with an inserting type contact knife, the other contact plate is provided with a hook type contact knife, and the inserting type contact knife and the hook type contact knife are respectively extended out of the through hole of the cover plate.

5. The compact fuse of claim 4, wherein: and a gasket is arranged between the cover plate and the insulating pipe body, and the gasket and the contact plate are not touched with each other.