CN211507559U

CN211507559U - Fuse protector

Info

Publication number: CN211507559U
Application number: CN202020130329.0U
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: 2020-09-15
Anticipated expiration: 2030-01-20

Abstract

A fuse comprises a switch handle 1, a shell 2, binding posts 3 at two ends of the shell 2, a mounting seat 4 rotationally connected with the shell 2, a first connecting block 5 and a second connecting block 6 positioned at the bottom of the shell 2, and is characterized in that two ends of the mounting seat 4 are connected by a U-shaped fixing part 7, a limiting block 8 is arranged on one side of the first connecting block 5, and a stopping piece 9 is arranged on the second limiting block 6; its advantage lies in that the fuse is difficult for causing when the support and drops, has certain radiating effect, prolongs the life of fuse.

Description

Fuse protector

Technical Field

The utility model relates to an electrical technology field specifically is a fuse.

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: publication No. CN108597971A a switch mode fuse, including the casing and be located two electric connection assembly of casing both ends, characterized by: the middle part of casing is installed and is rotated the mount pad of being connected with the casing, install the fuse-link in the mount pad, when the mount pad lock is on the casing, the both ends of fuse-link to each other with two electrical connection component respectively.

Although above-mentioned switched mode fuse enables fuse-link both ends contact more stably, under long-time work, because frictional wear produces slight crackle and can lead to the destruction to the spring, permanent deformation can take place for the spring, and the deformation or the load of spring exceed the tolerance range, and the fuse drops and then influences the normal work of fuse from the support easily, and the life that the fuse is led to the injury to fuse inside of the fuse that drops subtracts the weak point.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fuse, the fuse is difficult for causing when the support to drop and have certain radiating effect for thereby the normal work increase of service life of fuse improves the security of fuse, reduces manufacturing cost.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fuse includes the terminal at switch handle, casing both ends, rotates the mount pad of being connected, is located a connecting block and No. two connecting blocks of casing bottom with the casing, its characterized in that the mount pad both ends are connected by U type fixed part, a connecting block one side is equipped with the stopper, be equipped with the retainer on No. two stoppers, the guide rail activity in the retainer along No. two connecting blocks, elasticity convex part on the retainer forms spacing relation with the wedge of casing bottom in sliding process, the casing is equipped with a plurality of louvres.

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

the mount pad both ends are connected by U type fixed part, and U type fixed part both made things convenient for opening of switch handle to close, still made things convenient for the installation of fuse to dismantle, and connecting block one side of casing is equipped with the stopper, and the stopper enables the chucking and can not produce the displacement easily between support and the fuse-base in the recess that the support got into a connecting block, and the design of retainer makes being connected between fuse and the support closely be difficult for producing more and drops, strengthens the compactness between fuse and the support.

Furthermore, the U type fixed part comprises U type mount and elasticity U type piece, the surface of U type mount is located to elasticity U type piece, U type mount embedding on the fixing base of casing, support arm and terminal contact electricity on the U type mount are connected.

the U type mount is equipped with the elasticity U type piece outward, makes U type mount more firm, stable, can not produce the physics because of the displacement of mount makes the fuse produce the melting when lieing in the terminal electricity connection, breaks and leads to the damage of fuse, has strengthened the security performance of fuse, has prolonged the life of fuse.

Further, the stop piece moves along a guide rail in the second connecting block, and the elastic convex part on the stop piece and the wedge-shaped block at the bottom of the shell form a limiting relation in the sliding process.

the wedge block is used for limiting the excessive sliding of the stop piece in the guide rail, the stop piece is fixed at a certain position, the stop piece can not slide randomly, the elastic convex part forms a limiting relation with the wedge block at the bottom of the shell in the sliding process, the tightness wedge block between the fuse and the support is enhanced and is positioned on the fuse base, the wedge block is a part on the shell base, the wedge block is formed by die casting along with a fuse die in the manufacturing process, extra process manufacturing is not needed, and the production and manufacturing cost of the fuse is reduced.

Furthermore, a plurality of heat dissipation holes are formed in the bottom of the shell.

the plurality of heat dissipation holes are formed in the shell, certain heat is dissipated to the outside when the fuse works, the fuse is protected, and therefore the service life of the fuse is effectively prolonged.

Drawings

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

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

In the figure: 1-switch handle, 2-shell, 3-binding post, 4-mounting seat, 5-first connecting block, 6-second connecting block, 7-U-shaped fixing part, 7-1-U-shaped fixing part, 7-2-elastic U-shaped sheet, 8-limiting block, 9-stopping part, 10-guide rail, 11-elastic convex part, 12-fixing seat, 13-heat dissipation hole, 14-support arm and 15-wedge-shaped block.

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.

The utility model is further explained by referring to fig. 1 and fig. 2, and the fuse comprises a switch handle 1, a shell 2, binding posts 3 at two ends of the shell 2, a mounting seat 4 rotationally connected with the shell 2, a first connecting block 5 and a second connecting block 6 positioned at the bottom of the shell 2, and is characterized in that two ends of the mounting seat 4 are connected by a U-shaped fixing part 7, a limiting block 8 is arranged at one side of the first connecting block 5, and a stopping piece 9 is arranged on the second connecting block 6; the mount pad both ends are connected by U type fixed part, and U type fixed part both made things convenient for opening of switch handle to close, still made things convenient for the installation of fuse to dismantle, and connecting block one side of casing is equipped with the stopper, and the stopper enables the chucking and can not produce the displacement easily between support and the fuse-base in the recess that the support got into a connecting block, and the design of retainer makes being connected between fuse and the support closely be difficult for producing more and drops, strengthens the compactness between fuse and the support.

In this embodiment, the U-shaped fixing portion 7 is composed of a U-shaped fixing frame 7-1 and an elastic U-shaped piece 7-2, the elastic U-shaped piece 7-2 is disposed on the surface of the U-shaped fixing frame 7-1, the U-shaped fixing frame 7-1 is embedded into the fixing base 12 of the housing 2, and the support arm 14 on the U-shaped fixing frame 7-1 is electrically connected to the terminal 3 in a contact manner; the U type mount is equipped with the elasticity U type piece outward, makes U type mount more firm, stable, can not produce the physics because of the displacement of mount makes the fuse produce the melting when lieing in the terminal electricity connection, breaks and leads to the damage of fuse, has strengthened the security performance of fuse, has prolonged the life of fuse.

In the embodiment, the stop piece 9 moves along a guide rail 10 in the second connecting block 6, and the elastic convex part 11 on the stop piece 9 forms a limiting relation with the wedge block 15 at the bottom of the shell 2 during the sliding process; the wedge block is used for limiting the excessive sliding of the stop piece in the guide rail, the stop piece is fixed at a certain position, the stop piece can not slide randomly, the elastic convex part forms a limiting relation with the wedge block at the bottom of the shell in the sliding process, the tightness wedge block between the fuse and the support is enhanced and is positioned on the fuse base, the wedge block is a part on the shell base, the wedge block is formed by die casting along with a fuse die in the manufacturing process, extra process manufacturing is not needed, and the production and manufacturing cost of the fuse is reduced.

In this embodiment, the housing 2 is provided with a plurality of heat dissipation holes 13; the plurality of heat dissipation holes are formed in the shell, certain heat is dissipated to the outside when the fuse works, the fuse is protected, and therefore the service life of the fuse is effectively prolonged.

The working principle is as follows: support one end is installed in the recess of a connecting block, and the support is blocked by the stopper, and the support other end is blocked by the stopper slip, and during the fuse-element inserted the mount pad afterwards, when the switch was closed, produced the electricity between U type locating piece and the terminal at fuse-element, mount pad both ends and was connected, and the fuse begins to work.

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 includes terminal (3) at switch handle (1), casing (2) both ends, rotates mount pad (4) of being connected, is located connecting block (5) and No. two connecting blocks (6) of casing (2) bottom with casing (2), its characterized in that mount pad (4) both ends are connected by U type fixed part (7), connecting block (5) one side is equipped with stopper (8), be equipped with stopper (9) on No. two connecting blocks (6), guide rail (10) activity in stopper (9) along No. two connecting blocks (6), elasticity convex part (11) on stopper (9) form spacing relation with wedge (15) of casing (2) bottom in the slip process, casing (2) are equipped with a plurality of louvre (13).

2. A fuse as per claim 1, characterised in that said U-shaped fixing part (7) is composed of a U-shaped fixing frame (7-1) and an elastic U-shaped piece (7-2), said elastic U-shaped piece (7-2) is set on the surface of U-shaped fixing frame (7-1), said U-shaped fixing frame (7-1) is embedded in the fixing base (12) of said case (2), the arm (14) of said U-shaped fixing frame (7-1) is in contact with and electrically connected with the binding post (3).