CN211265402U

CN211265402U - Fuse base

Info

Publication number: CN211265402U
Application number: CN202020133260.7U
Authority: CN
Inventors: 黄松梅; 樊志军; 胡相勇
Original assignee: Jianda Electric Co ltd
Current assignee: Jianda Electric Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-08-14
Anticipated expiration: 2030-01-20

Abstract

A fuse base comprises a shell, a switch handle, a melt, a clamping seat and binding posts positioned at two ends of the shell, and is characterized in that a U-shaped fixing piece is mounted on the clamping seat, an elastic U-shaped sheet is arranged on the outer side of the U-shaped fixing piece, a connecting rod on the U-shaped fixing piece is provided with a branch part for limiting the binding posts and enabling the U-shaped fixing piece to be electrically connected with the binding posts, the front end of the U-shaped fixing piece is inclined upwards at an acute angle to form a hem, and the elastic U-shaped sheet is fixed on a limiting relation between a forming surface and a surface of the U-shaped fixing piece; its advantage lies in increasing the area of contact between U type mounting and the U type piece, prevents simultaneously that the fuse from producing the displacement and leading to the fuse to take place physical fusing when using, increases the security of fuse, increases the heat dissipation function of fuse to the life of extension fuse.

Description

Fuse base

Technical Field

The utility model relates to an electrician's articles for use field especially relates to a fuse-base

Background

The fuse is an electric appliance which can break the circuit by fusing the melt with the heat generated by itself when the current exceeds the specified value, and the fuse is a current protector which can break the circuit by fusing the melt with the heat generated by itself after the current exceeds the specified value for a period of time. The fuse is widely applied to high-low voltage distribution systems, control systems and electrical equipment, is a common part in the electrical field, is often installed in an electrical cabinet, is used as a short-circuit and overcurrent protector, and is one of the most commonly applied protection devices; the prior art is as follows: the fuse holder is characterized in that the fuse carrier comprises a rotating part and a support part for placing a fuse, the rotating part and the support part are integrally formed, the support part is arranged between the incoming line insert sleeve and the outgoing line insert sleeve, and two electrodes of the fuse placed in the support part can be respectively electrically connected with the incoming line insert sleeve and the outgoing line insert sleeve; the middle part of the shell is provided with an opening, and the rotating part is arranged at the opening in the middle part of the shell; the center of the rotating part is provided with a rotating shaft, the upper cover and the lower cover are respectively provided with round holes corresponding to the rotating shaft, the rotating shaft is inserted into the round holes, and the rotating part can rotate around the rotating shaft and drive the support part to separate the protective tube from the wire inlet plug bush and the wire outlet plug bush and expose the protective tube from the opening.

Above-mentioned the utility model provides an easily change fuse holder of protective tube, two elastic conducting strip outsides on the cassette are fixed by U type jump ring, and area of contact between elastic conducting strip and the U type jump ring is less, and this fuse holder appears contact failure easily at the in-process of work, leads to the fuse to take place physical fusing easily to influence the life of fuse.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fuse base increases the area of contact between elastic conducting strip and the U type jump ring, strengthens the heat dissipation function of fuse to the life of extension fuse.

The fuse base comprises a shell, a switch handle, a melt, a clamping seat and binding posts positioned at two ends of the shell, and is characterized in that a U-shaped fixing piece is installed on the clamping seat, an elastic U-shaped piece is arranged on the outer side of the U-shaped fixing piece, a connecting rod on the U-shaped fixing piece is provided with a branch part used for limiting the binding posts and enabling the U-shaped fixing piece to be electrically connected with the binding posts, the front end of the U-shaped fixing piece is inclined upwards at an acute angle to form a hem, and the elastic U-shaped piece fixes the limit relation between the forming surface and the surface of the U-shaped fixing piece.

After the structure more than adopting, compared with the prior art, the utility model, have following advantage:

the front end of U type mounting is the installation of acute angle tilt up convenience fuse-element and dismantles, the branch portion of connecting rod has the effect that prevents the terminal and produce the displacement on the U type mounting, the main effect of elasticity U piece lies in that fixed U type spare makes its difficult production displacement, still be equipped with the spacing relation that an inclined plane elasticity U type piece front end is fixed in inclined plane formation face and face on the U type mounting, be favorable to preventing the slip of elasticity U type piece, the compactness of U type mounting has been strengthened simultaneously, effectively prevent contact failure's phenomenon and produce, the security of fuse has been strengthened, therefore the fuse is difficult to take place the physics fusing, thereby the life of fuse has been prolonged.

Furthermore, the bottom of the U-shaped fixing piece is provided with a round block which is abutted against the elastic U-shaped piece to form a limiting relation.

Furthermore, the U-shaped fixing piece is also provided with a U-shaped opening which is matched with the corresponding boss on the shell.

the U type mounting is installed in the cassette, and when the switch handle motion, the effect of circle piece and U type open-ended lies in preventing that U type mounting from producing the displacement for the work that the fuse can be safe has strengthened security, the practicality of fuse.

Further, the casing is provided with heat dissipation holes.

Be equipped with the louvre on the sleeve pipe and help distributing the heat that the fuse produced at the during operation fuse-element, strengthened the radiating effect of fuse, protection circuit that can be better to the life of this fuse has been prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a part of the structure of the present invention.

In the figure: 1-shell, 2-switch handle, 3-round block, 4-clamping seat, 5-binding post, 6-U-shaped fixing piece, 7-U-shaped piece, 8-shell, 9-heat dissipation hole, 10-U-shaped opening, 11-connecting rod, 12-branch part and 13-hem.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2 illustrates a fuse holder further, which includes a housing 1, a switch handle 2, a melt, a holder 4, and terminals 5 located at two ends of the housing 1, and is characterized in that a U-shaped fixing member 6 is mounted on the holder 4, an elastic U-shaped piece 7 is disposed outside the U-shaped fixing member 6, a connecting rod 11 on the U-shaped fixing member 6 is provided with a branch portion 12 for limiting the terminals 5 and electrically connecting the U-shaped fixing member 6 with the terminals 5, a hem 13 is formed by the front end of the U-shaped fixing member 6 inclining upwards at an acute angle, and the elastic U-shaped piece 7 is fixed on the U-shaped fixing member 6 to form a surface-to-surface limit relationship; the front end of U type mounting is the installation of acute angle tilt up convenience fuse-element and dismantles, the branch portion of connecting rod has the effect that prevents the terminal and produce the displacement on the U type mounting, the main effect of elasticity U piece lies in that fixed U type spare makes its difficult production displacement, still be equipped with the spacing relation that an inclined plane elasticity U type piece front end is fixed in inclined plane formation face and face on the U type mounting, be favorable to preventing the slip of elasticity U type piece, the compactness of U type mounting has been strengthened simultaneously, effectively prevent contact failure's phenomenon and produce, the security of fuse has been strengthened, therefore the fuse is difficult to take place the physics fusing, thereby the life of fuse has been prolonged.

In this embodiment, the bottom of the U-shaped fixing member 6 is provided with a round block 3 which abuts against the elastic U-shaped piece to form a limiting relationship, and the U-shaped fixing member 6 is further provided with a U-shaped opening 10 which is matched with a corresponding boss on the housing 1; the U type mounting is installed in the cassette, and when the switch handle motion, the effect of circle piece and U type open-ended lies in preventing that U type mounting from producing the displacement for the work that the fuse can be safe has strengthened security, the practicality of fuse.

In this embodiment, the casing 8 is provided with heat dissipation holes 9; be equipped with the louvre on the sleeve pipe and help distributing the heat that the fuse produced at the during operation fuse-element, strengthened the radiating effect of fuse, protection circuit that can be better to the life of this fuse has been prolonged.

The working principle is as follows: the fuse element is arranged in the casing, when the fuse works, the U-shaped fixing pieces at the two ends of the fuse element and the casing are electrically connected with the wiring terminals, the temperature in the casing rises, heat is emitted from the heat dissipation groove on the fuse tube, and the heat is dissipated to the outside through the heat dissipation groove on the shell.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fuse base, includes casing (1), switch handle (2), fuse-element, cassette (4) and is located terminal (5) at casing (1) both ends, its characterized in that U type mounting (6) are being installed on cassette (4), U type mounting (6) outside is equipped with elasticity U type piece (7), connecting rod (11) on U type mounting (6) are equipped with a portion (12) and are used for the restriction terminal (5) and make U type mounting (6) and terminal (5) form the electricity and be connected, the front end of U type mounting (6) is acute angle tilt up and forms a hem (13), the spacing relation of elasticity U type mounting (6) fixed U type mounting (7) formation face and face.

2. A fuse holder as claimed in claim 1, wherein the U-shaped fixing member (6) has a boss (3) at its bottom for engaging with the bottom of the resilient U-shaped piece to define a limit relationship.

3. A fuse holder as claimed in claim 2, characterised in that the U-shaped fixing member (6) is provided with U-shaped openings (10) for engaging with corresponding bosses in the housing (1).

4. A fuse holder as claimed in claim 1, characterized in that the melt is arranged in a casing (8) of the switch handle (2), said casing (8) being provided with heat dissipation holes (9).