CN200956360Y

CN200956360Y - Fusing type protective tube

Info

Publication number: CN200956360Y
Application number: CN 200620076971
Authority: CN
Inventors: 姚年生
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-25
Filing date: 2006-08-25
Publication date: 2007-10-03
Anticipated expiration: 2016-08-25

Abstract

The utility model discloses a fusing type protection tube, which comprises a fuse, a lead, a fuse support and a cover. The lead is extended out of the fuse support, and the cover is clasped with the fuse support to form the protection tube body. The utility model is characterized in that the fuse and the lead are made from one integrated fuse wire with the same material. The fuse is cut from the fuse wire with the middle part flattened. The utility model is characterized in simple structure, convenient fabrication, low cost, reliable performance, welding-free and lead-pollution-free.

Description

The Fuse Type protective tube

Technical field

The utility model relates to a kind of appliance circuit insurance, is a kind of Fuse Type protective tube specifically.

Background technology

In the structure of existing Fuse Type protective tube, lead-in wire is connected the three kinds of modes that mainly contain with fuse (fuse-link).Directly welded: as shown in Figure 1, directly will go between with the two ends of soldering to cartridge fuse.Because in the scolding tin lead is arranged, discarded protective tube can cause heavy metal pollution, has been subjected to the environmental protection admittance restriction of developed country.Riveting type: shown in Fig. 3,4, the end that will go between earlier flattens to bend and makes it to form a circle, the fuse riveting is got on again.This fuse is big because of contact resistance, can cause fusing inaccurate, and two kinds of strengths of materials very easily break fuse when not coexisting processing.Welding adds riveting type: as shown in Figure 2, earlier cartridge fuse is welded, the end cap that will rivet lead-in wire more in advance is pressed onto the two ends of cartridge fuse.Because metal is different with glass tube intensity, easily with glass tube crushing, and many two end caps have increased cost during riveting.Simultaneously, the problem that also has the big and lead contamination of contact resistance.

The utility model content

Goal of the invention of the present utility model is to overcome the technological deficiency that prior art exists, and a kind of Fuse Type protective tube that does not have welding, do not need riveting and the big defective of non-contact resistance is provided

The utility model Fuse Type protective tube is made of fuse, lead-in wire, body and end cap, it is characterized in that: fuse and lead-in wire are the overall wire body of same material, and fuse flattens the back cutting with line body middle part and forms.

Above-mentioned protective tube is provided with spacer in the junction of fuse and two ends lead-in wire, and the center of spacer has small sircle hole; Body is fastened by two semicircular body and forms, and the position at the corresponding spacer small sircle hole in the two ends of semicircular body is provided with one recessed one protruding small column.When two semicircular body fastened, just small column passed the spacer small sircle hole.

The utility model Fuse Type protective tube, constitute by fuse, lead-in wire, fuse supporter and block, lead-in wire is passed by the fuse supporter, and block fastens with the fuse supporter and forms the fuse body, it is characterized in that: fuse and lead-in wire are the overall wire body of same material.Fuse flattens the back cutting with line body middle part and forms.

Above-mentioned protective tube is by the length of control fuse and the proportionate relationship in its cross section, sets the rated blowing-current of fuse, the realization insurance function.

The utility model Fuse Type protective tube, simple in structure, easy to make, with low cost, dependable performance does not have welding, unleaded pollution problems.

Description of drawings

Fig. 1, be the protective tube (welded type) of prior art;

Fig. 2, be the protective tube (welding adds riveting type) of prior art;

Fig. 3, be the protective tube (riveting type) of prior art;

Fig. 4, be the utility model Fuse Type protective tube schematic perspective view;

Fig. 5, be the utility model Fuse Type protective tube assembling schematic diagram;

Fig. 6, be the utility model Fuse Type protective tube generalized section;

Fig. 7, be the semicircular body schematic diagram of the utility model Fuse Type protective tube body;

Fig. 8, be the utility model Fuse Type protective tube assembling schematic diagram (lead-in wire with end);

Fig. 9, be the utility model Fuse Type protective tube generalized section (lead-in wire with end).

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail

Embodiment 1, shown in Fig. 4,5,6,7, the Fuse Type protective tube is made of fuse 2, lead-in wire 6, body 1 and end cap 3, fuse and lead-in wire are same line body, are electric wires such as copper, zinc or indium.The requirement of diameter wire is determined the diameter of wire rod according to product, after gauge or diameter of wire is determined, determine the length of fuse (fuse-link) again according to the length of cartridge fuse, after above numerical value is determined, line body middle part is flattened, determine to carry out cutting behind the fuse area of section according to current requirements again, thereby obtain meeting the fuse of current requirements.When the cutting of the junction of fuse and two ends lead-in wire, respectively stay a spacer 4, at small sircle hole 5 of centre punch of spacer; Body is fastened by two semicircular body and forms, and the position at the corresponding spacer small sircle hole in the two ends of semicircular body is provided with one recessed one protruding small column 12,13.When two semicircular body fastened, just small column passed the spacer small sircle hole.

Embodiment 2, shown in Fig. 8,9, the Fuse Type protective tube, by fuse, lead-in wire, fuse supporter 8 with block a shot and 7 constitute, it is identical with embodiment to go between, the line body that just will constitute fuse and lead-in wire curves a font, lead-in wire is passed by the fuse supporter, and block fastens with the fuse supporter and forms the fuse body.

The proportionate relationship in fuse and lead-in wire cross section, determine as follows: the wire rod with the great former tin material in Yongkang Co., Ltd is an example, and length is 30mm, and diameter is HYZN9995 number the zinc wire of 0.8mm, and its sectional area is 0.16mm ², electric current is 22A, when flattening cuts into 0.2mm * 0.4mm, area of section is 0.08mm ²The time, electric current is 12A, area of section is 0.045mm ²The time, electric current is 6A, area of section is 0.035mm ²The time, electric current is 5A, in sum the sectional area of wire rod and electric current relation in direct ratio.By that analogy, can both obtain different electric currents as long as change the sectional area of different conductor.

The utility model protection range includes but not limited to the foregoing description, only lead-in wire insurance silk thread body is carried out the protection range that technical scheme that material replaces still belongs to this patent.

Claims

1, a kind of Fuse Type protective tube is made of fuse (2), lead-in wire (6), body (1) and end cap (3), it is characterized in that: fuse and lead-in wire are the overall wire body of same material.

2, Fuse Type protective tube according to claim 1 is characterized in that: the junction at fuse and two ends lead-in wire is provided with spacer (4), and the center of spacer has small sircle hole (5); Body is fastened by two semicircular body and forms, and the position at the corresponding spacer small sircle hole in the two ends of semicircular body is provided with one recessed one protruding small column (12,13), and when two semicircular body fastened, just small column passed spacer small sircle hole (5).

3, a kind of Fuse Type protective tube, constitute by fuse (2), lead-in wire (6), fuse supporter (8) and block (7), lead-in wire (6) is passed by fuse supporter (8), block fastens with the fuse supporter and forms the fuse body, it is characterized in that: fuse and lead-in wire are the overall wire body of same material.