CN2578969Y

CN2578969Y - Anti-misdrop fuse

Info

Publication number: CN2578969Y
Application number: CN 02285362
Authority: CN
Inventors: 肖忠海; 刘新华; 张世宏; 邱东; 宋志辉
Original assignee: 宋志辉
Priority date: 2002-11-07
Filing date: 2002-11-07
Publication date: 2003-10-08
Anticipated expiration: 2012-11-07

Abstract

The utility model relates to an anti-misdrop fuse which comprises a silica gel support bottle, an insulated fuse wire sleeve and a fuse wire penetrating the insulated fuse wire sleeve, wherein the upper end and the lower end of the silica gel support bottle are respectively connected with a bracket, the other end of each bracket is clamped with each of two contacts at both ends of the fuse wire sleeve. The surface of the fuse wire sleeve is connected with an umbrella-shaped insulated ring, the end of the contact at one end of the sleeve is hinged with one end of a safety arm whose the other end is provided with a directory board, and a torsion spring is arranged on a hinge axle of the safety arm. The contacts at both of the two ends of the fuse wire sleeve are respectively provided with a fuse wire connecting mechanism, and both sides of each contact of the safety arm are provided with radial convex axles. The ends of the upper bracket are provided with omega-shaped elastic bayonets matched with the contacts of the fuse wire sleeve; the ends of the lower bracket are provided with clamp pores matched with the convex axles on both sides of the lower end of the contact, the upper side of each clamp pore is provided with a conical opening, and the upper side of the middle part of the lower bracket is connected with an elastic electric contact which is in contact with an electric contact on the side surface of the end of the fuse wire sleeve. The utility model changes the mode of cutting off a circuit; a segment of the fused fuse wire can be downwardly drawn out by the safety arm which swings downwardly so as to obtain a safe distance between two broken points, and the purpose of thoroughly cutting off the circuit is achieved. Because the dropping of the sleeve is not needed, the firm bayonets are adopted between the sleeve and the brackets, and the sleeve can be ensured not to drop even under great external force, so the accident of the electric misdrop can be avoided.

Description

Anti-errorly fall fuse

Technical field

The utility model relates to the electric power transfer parts, particularly a kind of fuse that cuts off circuit when short circuit or electric leakage appear in high-tension circuit.

Background technology

Existing this class fuse is a drop type, its basic structure is to connect the insulating sleeve that a center is installed with fuse in an insulation bracket end up and down that bottle (being generally silica gel material) supports, its fuse failure when accidents such as short circuit occurring when line load, the falling mechanism action that drives on the support makes fuse sleeve pipe disengaging support and drops into ground, reaches the purpose of thorough cut-out circuit.The shortcoming of this fuse switch is when being subjected to very big external force (as strong wind etc.), also can fall even without fusing, causes misoperation, causes unnecessary outage.

Summary of the invention

The purpose of this utility model just provides a kind of anti-error fuse that falls.

The technical solution of the utility model is: comprise that silica gel props up the fuse sleeve pipe of bottle, insulation and passes its interior fuse, the upper and lower side that props up bottle at silica gel respectively is connected with support, the other end clamping fuse sleeve pipe two ends contact of this support, be connected with the umbrella shape dead ring at described fuse cover tube-surface, at a be hinged end of a safety arm of the contact end of this sleeve pipe one end, the other end of this safety arm has direction board, one torsion spring is arranged on the safety arm articulated axle, contact at fuse sleeve pipe two ends respectively has fuse bindiny mechanism, and radially protruding axle is arranged in the contact both sides that safety arm is arranged; Ω shape elastic bayonet lock with the contacts mates of fuse sleeve pipe is arranged in described upper bracket end; In the lower carriage end hole clipping that cooperates with the protruding axle of both sides, described contact lower end is arranged, this hole clipping upside has tapered opening, connects an elasticity electrical contact at this lower carriage middle part upside and contacts with an electrical contact of this end side surface of fuse sleeve pipe.

Described fuse bindiny mechanism is respectively: the attachment cap on contact top in the top, it with this contact top by being threaded; At the screw rod in the outside of the contact of lower end and revolve thereon shank type nut.

The loading and unloading handle that the one oblique outside is arranged on the top of described fuse sleeve pipe.

The utility model has changed the mode of cutting off circuit, promptly when fuse failure after by one section of the fuse extraction downwards that will break to lower swing of safety arm, make between its two breakpoint to reach safe distance, thereby reach the purpose of thorough cut-out circuit.Owing to do not need sleeve pipe to fall, so the firm bayonet socket of employing between itself and the support can guarantee that it can not fall down yet under the situation of very big external force.Avoided the generation of wrong diagnosis electrification.

Description of drawings

Fig. 1 is the utility model general structure schematic diagram;

Fig. 2 is the view at the utility model upper bracket top;

Fig. 3 is the rearview of Fig. 2;

Fig. 4 is the structural representation of the utility model fuse sleeve pipe lower end;

Fig. 5 is the left view of Fig. 4;

Fig. 6 is the structure chart of the utility model lower carriage;

Fig. 7 is the left view of Fig. 6.

Embodiment

Referring to Fig. 1-Fig. 7, the utility model comprises that silica gel props up the fuse sleeve pipe 2 of bottle 1, insulation and passes its interior fuse 7, the upper and lower side that props up bottle 1 at silica gel respectively is connected with support 3 and 4, the other end of upper bracket 3 has the copper contact 21 of Ω shape elastic bayonet lock 31 clamping fuse sleeve pipes upper end, surface at described fuse sleeve pipe 2 close upper ends is connected with umbrella shape dead ring 8, destroys its insulation property to avoid rain, snow wet surface.Be hinged in contact 22 ends of the lower end of this a sleeve pipe end of a safety arm 5, the other end of this safety arm 5 has direction board 51, scribbles eye-catching color at this direction board 51.One torsion spring 6 is arranged on the articulated axle 52 of safety arm.Contact 21 and 22 at fuse sleeve pipe 2 two ends respectively has fuse bindiny mechanism, i.e. the attachment cap 24 on contact 21 tops, upper end, it with this contact top by being threaded; And at the screw rod 25 in the following outside of contact 22 and revolve thereon shank type nut 26.Have in the end of lower carriage 4 across lower end contact 22 both sides of fuse sleeve pipe and with protruding axle 23 hole clippings that cooperate 41 of both sides, these hole clipping 41 upsides have tapered opening 42, with convenient installation fuse sleeve pipe 2.Connecting an elasticity electrical contact 43 at the middle part of this lower carriage 4 upside contacts with the electrical contact 221 of following this end side surface of contact of fuse sleeve pipe 2.The loading and unloading handle that the one oblique outside is arranged on the top of fuse sleeve pipe 2.

Fuse 7 of the present utility model passes sleeve pipe 2, its lower end is fastened on down the outside of contact 22 and makes it walk around the outer end of safety arm 5 roots with shank type nut 26, the other end of tension fuse 7 is upturned the direction board 51 of safety arm 5 other ends and close sleeve pipe 2, upper end with fuse 7 is fastened on attachment cap 24 on the upper contact head 21 of sleeve pipe 2 then, at last sleeve pipe 2 is connected to the two ends of lower carriage 3,4.When fuse 7 fusing, safety arm 5 deflects down under the effect of torsion spring 6 and fuse 5 is transferred to one section, reaches the purpose of cutting off circuit.Whether the position of direction board 51 can observably demonstrate fuse 7 and fuse.

Claims

1, a kind of anti-error fuse that falls, comprise that silica gel props up bottle, the fuse sleeve pipe of insulation and pass fuse in it, the upper and lower side that props up bottle at silica gel respectively is connected with support, the other end clamping fuse sleeve pipe two ends contact of this support, it is characterized in that: be connected with the umbrella shape dead ring at described fuse cover tube-surface, at a be hinged end of a safety arm of the contact end of this sleeve pipe one end, the other end of this safety arm has direction board, one torsion spring is arranged on the safety arm articulated axle, contact at fuse sleeve pipe two ends respectively has fuse bindiny mechanism, and radially protruding axle is arranged in the contact both sides that safety arm is arranged; Ω shape elastic bayonet lock with the contacts mates of fuse sleeve pipe is arranged in described upper bracket end; In the lower carriage end hole clipping that cooperates with the protruding axle of both sides, described contact lower end is arranged, this hole clipping upside has tapered opening, connects an elasticity electrical contact at this lower carriage middle part upside and contacts with an electrical contact of this end side surface of fuse sleeve pipe.

2, the anti-error fuse that falls according to claim 1 is characterized in that: described fuse bindiny mechanism is respectively: the attachment cap on contact top in the top, it with this contact top by being threaded; At the screw rod in the outside of the contact of lower end and revolve thereon shank type nut.

3, the anti-error fuse that falls according to claim 1 and 2 is characterized in that: the loading and unloading handle that an oblique outside is arranged on the top of described fuse sleeve pipe.