CN2249445Y

CN2249445Y - Knife switch

Info

Publication number: CN2249445Y
Application number: CN 95221054
Authority: CN
Inventors: 樊进
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-06
Filing date: 1995-09-06
Publication date: 1997-03-12
Anticipated expiration: 2005-09-06

Abstract

The utility model discloses a knife switch and aims at providing a novel inserting porcelain knife switch which has the advantages of convenience, safety and reliability. The utility model comprises a porcelain seat, a contact knife, an upper rubber wood cover, a contact knife rotary contact, etc., wherein, the rear part of the contact knife rotary contact is connected with a two-way or a three-way inserting porcelain fuse. The utility model is mainly used for electricity distribution occasions in life and production, and is characterized in that when a fuse wire is broken, the fuse wire can be changed by pulling off the fuse wire on a plug without directly operating on a switch, danger of electric shock is reduced, and people's production and life are convenient.

Description

A kind of disconnecting link switch

The utility model relates to a kind of disconnecting link switch, refers in particular to a kind of slotting porcelain formula disconnecting link switch.

As everyone knows, existing double-pole or three cutter disconnecting link switches are by the porcelain seat, contact knife, last Bakelite Cover, following Bakelite Cover, the inlet wire contact, the contact knife rotary contact, composition such as fuse and outlet terminal, this disconnecting link switch is at general electrical equipment, hardware store is all available, the scope of application is quite extensive, people's production and life have been made things convenient for to a certain extent, but when this disconnecting link switch makes fuse opening at generation electricity consumption short circuit accident or because of the electricity consumption electric current is excessive, the replacing of fuse quite bothers, the operator need change new fuse nearby at power supply, there is very big Danger Electric shock risk, all the more so for the people who is ignorant of electricity.

For overcoming above-mentioned defective, the purpose of this utility model is to provide a kind of convenient, safe and reliable disconnecting link switch of fuse of changing.

For achieving the above object, the utility model has adopted a kind of disconnecting link switch, comprise porcelain seat, contact knife, contact knife rotary contact etc., be fixed with on the porcelain seat below the above-mentioned contact knife rotary contact and insert the porcelain insurance, the upper static contact of inserting in the porcelain insurance base links with the corresponding contact knife rotary contact in its top respectively, insert the outlet terminal that the interior following fixed contact of porcelain insurance base is the disconnecting link switch, it is indoor that every pair of corresponding upper static contact in the slotting porcelain insurance base and following fixed contact are in a fusing.

Above-mentioned of the present utility model slotting porcelain insurance can be made up of two covers or the single-phase slotting porcelain insurance of three covers, and every cover is inserted the porcelain insurance and linked with corresponding contact knife rotary contact, constitutes a current path.

The base and the plug of above-mentioned slotting porcelain insurance all can be one.

Insert the porcelain insurance owing to be equipped with on the porcelain seat below the contact knife rotary contact of the present utility model, thereby when the fuse failure in the insurance, the operator can pull up safety plug, easily changing new fuse on the plug, away from live wire, also increased fail safe during simultaneously owing to the replacing fuse.

The utility model is further explained and explanation below in conjunction with drawings and Examples:

Fig. 1 is an end view of the present utility model;

Fig. 2 is the partial sectional view of Fig. 1;

Fig. 3 is the front view of the utility model embodiment 1;

Fig. 4 is the internal structure schematic diagram of Fig. 3;

Fig. 5 is the structural representation of safety plug among Fig. 3;

Fig. 6 is the front view of the utility model embodiment 2;

Fig. 7 is the internal structure schematic diagram of Fig. 6.

Embodiment 1, Fig. 1, Fig. 2, Fig. 3, Fig. 4, Figure 5 shows that the structural representation of the utility model double-pole disconnecting link switch, the contact knife 1 of conventional disconnecting link switch is housed in the front portion of porcelain seat 2, last Bakelite Cover 3 and contact knife rotary contact 6 etc., be fixed with the slotting porcelain insurance of forming by insurance base 4 and safety plug 5 at the rear portion of porcelain seat 2, wherein insuring base 4 is a monoblock seat, be provided with two fusing chambers 11 in the seat, an each indoor upper static contact 8 and following fixed contact 9 of being fixed with that fuse, two upper static contacts 8 are connected by the lead 7 contact knife rotary contact 6 corresponding with it respectively, and the outlet of disconnecting link switch is connected on down on the fixed contact (simultaneously again as outlet terminal) 9 by two wire holes 10 of insurance base bottom; The safety plug 5 of present embodiment also is an one, being fixed with moving contact 12 and two lower moving contacts 13 on two respectively, link to each other with fuse 14 between the upper and lower moving contact on the safety plug 5 with upper static contact 8 and the following fixed contact 9 corresponding positions insured in the base 4.During use, when the fuse opening in the insurance, the contact knife 1 of can leaving behind is pulled up the plug inspection, the fuse that blows on the plug is changed new, plugs again, and the contact knife 1 that closes again can normally move.

Embodiment 2, present embodiment is a three-phase disconnecting link switch, as Fig. 1, Fig. 2, Fig. 6, shown in Figure 7, have three contact knifes, the rear portion of porcelain seat 2 is fixed with three independent slotting porcelain insurances, these three independent insurances are corresponding with three contact knifes respectively, and three interior upper static contacts 8 of insurance base are connected with three contact knife rotary contacts 6 of its top respectively.The insurance base of present embodiment and safety plug are monomer, are conventional slotting porcelain formula insurances.The using method of present embodiment is with embodiment 1.

Claims

1, a kind of disconnecting link switch, comprise porcelain seat, contact knife, contact knife rotary contact etc., it is characterized in that being fixed with on the porcelain seat below above-mentioned contact knife rotary contact slotting porcelain insurance, the upper static contact of inserting in the porcelain insurance base is connected with the corresponding contact knife rotary contact in its top respectively, insert the outlet terminal that the interior following fixed contact of porcelain insurance base is the disconnecting link switch, it is indoor that every pair of corresponding upper static contact in the slotting porcelain insurance base and following fixed contact are in a fusing.

2, disconnecting link switch according to claim 1 is characterized in that described slotting porcelain insurance is overlapped by two or the single-phase slotting porcelain insurance of three covers is formed, and the porcelain insurance inserted by every cover and corresponding contact knife rotary contact links, and constitutes a current path.

3, disconnecting link switch according to claim 1 is characterized in that the base and the plug of described slotting porcelain insurance all is one.