CN2286925Y

CN2286925Y - Single-porcelain-play fuse with electric contact

Info

Publication number: CN2286925Y
Application number: CN 96219120
Authority: CN
Inventors: 张萍
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-19
Filing date: 1996-09-19
Publication date: 1998-07-29
Anticipated expiration: 2006-09-19

Abstract

The utility model relates to a protection device for interrupting current resulted from the fuse of a fusible material, particularly a porcelain seat fuse, composed of a base and a plug cover, wherein, the upper end of the base is provided with a pair of fixed electric contacts; the lower end of the upper plug of the plug cover is provided with a movable joint which is electrically connected with the plug cover; the movable joint and a lower plug are connected with a fuse wire; the upper part of the movable joint is fixedly connected with an insulating strip through a connecting rod which is sheathed with a spring; when connected with the fuse wire, a conducting strip which is embedded on the insulating strip is pulled downward by the movable joint to be disconnected with the electric contacts of the base; when the fuse is blown out, the conducting strip is sprung up by the spring to contact with the electric contacts. Because the electric contacts are turned on and an outer displaying alarm circuit is switched on, the utility model achieves the protecting effect of alarm or auto control.

Description

The Single-porcelain-play fuse of charged contact

The utility model relates to the protective device that a kind of fusing owing to fusible material is ended electric current, particularly porcelain seat fuse

Fusible link is that the electric industry protection is the most common; the simplest; a kind of effective equipment that the most numerous electricians the most cheap and the most commonly used accept; though also there are many shortcomings in it; but still be used in a large number in the very not high circuit common the requirement; almost Chang Yong distribution board all be unable to do without it; used fuse in a large number in the using electricity system; after indivedual fuses are fused; except that there are ammeter or light indication in its rear end; the general difficult particular location of finding out immediately; sometimes needing one by one fuse to be extracted inspection could find, so both time-consuming even can influence other normal circuit electricity consumption.

The purpose of this utility model is to increase a pair of auxiliary electrical contact on the basis of original single porcelain fuse; connect display alarm or automatic control circuit the operator on duty is correctly fixed a breakdown rapidly, further can carry out relaying protection control the circuit that does not allow phase-deficient operation.

The utility model is finished like this, the utility model is inserted lid by porcelain pedestal and porcelain and is formed, the socket that the porcelain pedestal is inserted by porcelain box and a pair of plug that is connected input-output line and supplies porcelain to insert lid that is installed on the porcelain box, porcelain is inserted lid and a pair ofly can be connected fusible link and insert socket and form with the upper and lower plug of connecting input, output line with being equipped with by the porcelain lid, it is characterized in that:

End is equipped with a pair of electric contact that main circuit is carried out relaying protection by display alarm or control outside the confession connection of screw external wire on the porcelain pedestal.

An active joint that is electrically connected with it is equipped with in the slotting lower end that covers the plug of end of porcelain, active joint is connected the two ends of fusible link with following plug, the top affixed insulating trip of connecting rod that passes through of active joint, connecting rod is with a spring outward, be embedded with above the insulating trip one with the conducting strip of plug insulation, conducting strip is in porcelain to be inserted lid and inserts behind the socket and the corresponding below of two electric contacts, when connecting fusible link, conducting strip is pulled down by active joint and throws off with the electric contact of porcelain pedestal, and spring is pressed.When fusible link is fused, the nationality spring is with on the conducting strip bullet and contact with the electric contact of porcelain pedestal, and two electric contacts are connected, and outer display alarm or control circuit are connected and given the alarm or main circuit is carried out automatic protection.

The utility model compared with the prior art, its advantage is to make operating personnel to find that rapidly a certain fuse is fused, and can in time be handled, and the circuit that does not allow phase-deficient operation is realized protection control automatically.

Description of drawings

Fig. 1 is the front view of the utility model porcelain pedestal

Fig. 2 is the end view of the utility model porcelain pedestal

Fig. 3 inserts the front view of lid for the utility model porcelain

Fig. 4 inserts the end view of lid for the utility model porcelain

Accompanying drawing is described in conjunction with the embodiments

The utility model is inserted lid by porcelain pedestal and porcelain and is formed; Fig. 1,2 is the front view and the end view of the utility model porcelain pedestal; the porcelain pedestal is made up of porcelain box 1 and a pair of plug 11, electric contact 12 and the screw 13 that are installed on porcelain box 1; a pair of socket 11 connects input,

output line

14,15 also supplies the plug 21 of the slotting lid of porcelain to insert and connects main circuit; electric contact 12 is fixed on the upper end of porcelain pedestal by screw 13, and electric contact 12 is connected to outer Display and Alarm Circuit or controls relay protection circuit automatically.

Fig. 3 and 4 front view and end views for the slotting lid of the utility model porcelain, porcelain is inserted lid by on porcelain lid 2 and a pair of insertion socket 11, following plug 211,212 form, an active joint 26 that is flexible coupling with it by lead 28 is equipped with in the lower end of last plug 211, active joint 26 is connected the two ends of fusible link 22 with following plug 212, the top connecting rod 27 affixed insulating trips 24 that pass through of active joint 26, the connecting rod 27 outer springs 23 that are with, be embedded with above the insulating trip 24 one with the conducting strip 25 of last plug 211 insulation, conducting strip 25 be in insert lid insert behind the socket with the porcelain pedestal on two electric contacts, 12 corresponding belows.When connecting fusible link 22, conducting strip 25 is pulled down by active joint 26 and throws off with the electric contact 12 of pedestal, and spring 23 is pressed.At this moment, the external circuit open circuit that connects electric contact 12 is in wait state, and when fusible link 22 is fused, nationality spring 23 is with on conducting strip 25 bullets and contact with electric contact 12, and display alarm or automatic protection effect are finished in the external circuit connection of contact.

Claims

1. the Single-porcelain-play fuse of a charged contact, form by pedestal and slotting lid, pedestal is made up of with the socket (11) that a pair of plug (21) that is connected input-output line (14) (15) and supplies porcelain to insert lid that is installed on porcelain box (1) inserts porcelain box (1), porcelain is inserted lid by porcelain lid (2) be equipped with and a pair ofly can be connected fusible link (22) and insert socket (11) and form with connection input, output line (14), the plug up and down (211) of (15), (212), it is characterized in that:

1. on the porcelain pedestal end be equipped with a pair of by screw (13) fixedly external wire for display alarm outside connecting or control the electric contact (12) that main circuit is carried out relaying protection,

2. an active joint (26) that is flexible coupling with it by lead (28) is equipped with in the porcelain lower end of inserting the plug (211) cover end, active joint (26) is connected fusible link (22) with following plug (212), the top affixed insulating trip of connecting rod (27) (24) that passes through of active joint (26), the outer spring (23) that is with of connecting rod (27), be embedded with a conducting strip (25) above the insulating trip (24), conducting strip (25) is in to be inserted lid and inserts behind the socket and the corresponding below of two electric contacts (12), when connecting fusible link (22), conducting strip (25) is pulled down by active joint (26) and throws off with the electric contact (12) of pedestal, spring (23) is pressed, when fusible link (22) is fused, nationality spring (23) is with on conducting strip (25) bullet and contact with electric contact (12).