CN204857643U

CN204857643U - Fuse

Info

Publication number: CN204857643U
Application number: CN201520586624.6U
Authority: CN
Inventors: 李全安; 黄天忠; 陈存永; 黄冬冬
Original assignee: ZONTAY ELECTRIC CO Ltd
Current assignee: ZONTAY ELECTRIC CO Ltd
Priority date: 2015-08-06
Filing date: 2015-08-06
Publication date: 2015-12-09
Anticipated expiration: 2025-08-06

Abstract

The utility model discloses a fuse, a serial communication port, including electric power contact plate, fixed plate, fuse -element, insulator and end cover, it is preferred, the equal fixedly connected with fixed plate in both ends about the insulator, the inside parcel of insulator has the fuse -element, the electric power contact plate is all connected through the end cover in both ends about the fuse -element. The elliptical aperture that this fuse offered on through the fuse -element can make that the fuse -element is easy when transshipping to be divided absolutely, and the heat -sinking capability of elliptical aperture is relatively good, makes its security obtain improving, and the electric power contact plate is all connected through the end cover in both ends about the fuse -element, and messenger's the electric power contact plate and the lug connection of fuse -element have improved the contact strength of electric power contact plate with the fuse -element, have improved this fuse's reliability, and quartz sand through the packing of insulator inner chamber has improved the security of circuit and the effect of arc extinguishing.

Description

A kind of fuse

Technical field

The utility model relates to electrical safety equipment technical field, is specially a kind of fuse.

Background technology

Along with the development of economic society, electronic apparatus is day by day miniaturized, but its security performance requires harsher, especially, for fuse, not only requires that it has less dimensional structure, and to its breaking capacity and reliability requirement more and more higher.Fuse is after exceeding setting a period of time according to electric current, makes Melt molten, thus circuit is disconnected with the heat that himself produces; Use a kind of current protector that this principle is made.Fuse is widely used in high and low voltage electric distribution system and control system and power consumption equipment, as the protector of short circuit and super-high-current, is apply one of the most general protection device.

Particularly consider that the small-sized and termination electrode of microminiature fuse-link and the connection of shell are at present filled in mechanical connection that scolding tin between the two realizes when being and relying on scolding tin welding, its degree of being connected firmly is poor, and affect larger by welding procedure, bonding strength is also unstable, thus larger impulsive force can not be born, usually cause termination electrode to be separated with shell and form the bad phenomenon of explosion, and cause fuse-link can not effectively disjunction faulty circuit, cause unnecessary loss.

Utility model content

The purpose of this utility model is to provide a kind of fuse, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme: a kind of fuse, comprise power contacts plate, fixed head, melt, insulator and end cap, the two ends, left and right of described insulator are all fixedly connected with fixed head, the internal package of described insulator has melt, and the two ends, left and right of described melt all connect power contacts plate by end cap.

Preferably, described melt quantity be two.

Preferably, described melt offers elliptical aperture, and the lateral dimension of elliptical aperture is greater than its longitudinal size.

Preferably, described power contacts plate to be socketed with fixed head by sleeve and to be connected.

Preferably, in the inner chamber of described insulator, be filled with quartz sand, and quartz sand inside adds and has moulding sand binder.

Compared with prior art, the beneficial effects of the utility model are: the elliptical aperture of this fuse by melt is offered, melt easy disjunction when transshipping can be made, and the heat-sinking capability of elliptical aperture is relatively good, its fail safe is improved, the two ends, left and right of melt all connect power contacts plate by end cap, the power contacts plate made is connected with the direct of melt, improve the contact strength of power contacts plate and melt, improve the reliability of this fuse, by the quartz sand of insulator lumen loading, improve the fail safe of circuit and the effect of arc extinguishing.

Accompanying drawing explanation

Fig. 1 is the utility model elevational schematic;

Fig. 2 is the cross-sectional schematic diagram of the utility model.

In figure: 1, power contacts plate, 2, fixed head, 3, melt, 4, insulator, 5, end cap.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1-2, the utility model provides a kind of technical scheme: a kind of fuse, comprise power contacts plate 1, fixed head 2, melt 3, insulator 4 and end cap 5, quartz sand is filled with in the inner chamber of insulator 4, by the quartz sand of insulator 4 lumen loading, improve the fail safe of circuit and the effect of arc extinguishing, the two ends, left and right of insulator 4 are all fixedly connected with fixed head 2, the internal package of insulator 4 has melt 3, the quantity of melt 3 be two, melt offers elliptical aperture, and the lateral dimension of elliptical aperture is greater than its longitudinal size, by the elliptical aperture that melt 3 is offered, melt 3 easy disjunction when transshipping can be made, and the heat-sinking capability of elliptical aperture is relatively good, its fail safe is improved, power contacts plate 1 to be socketed with fixed head 2 by sleeve and to be connected, the two ends, left and right of melt 3 all connect power contacts plate 1 by end cap 5, power contacts plate 1 can be made to be connected with the direct of melt 3 by the setting of cover plate 5, improve the contact strength of power contacts plate 1 and melt 3, improve the reliability of this fuse.

Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.

Claims

1. a fuse, comprise power contacts plate (1), fixed head (2), melt (3), insulator (4) and end cap (5), it is characterized in that: the two ends, left and right of described insulator (4) are all fixedly connected with fixed head (2), the internal package of described insulator (4) has melt (3), and the two ends, left and right of described melt (3) all connect power contacts plate (1) by end cap (5).

2. a kind of fuse according to claim 1, is characterized in that: the quantity of described melt (3) be two.

3. a kind of fuse according to claim 1, is characterized in that: (3) offer elliptical aperture to described melt, and the lateral dimension of elliptical aperture is greater than its longitudinal size.

4. a kind of fuse according to claim 1, is characterized in that: described power contacts plate (1) to be socketed with fixed head (2) by sleeve and to be connected.

5. a kind of fuse according to claim 1, is characterized in that: be filled with quartz sand in the inner chamber of described insulator (4).