TWI653656B - Fuse fuse fixing structure - Google Patents

Abstract

A fuse fuse fixing structure comprising a base, a first electrode, a second electrode and a fuse line, wherein the middle portion of the base is provided with a first support portion, a second support portion, and the first A first wing portion is disposed on each side of the first support portion, and a first concave surface is formed between the first support portion and the first wing portion, and the first and second electrodes are divided into a hole. The first electrode has a first curved piece extending between the first supporting portion and the first wing portion, and the first curved piece is respectively disposed on a convex surface of the first concave surface, And a concave surface facing the first concave surface, the fuse wire is spanned between the first and second supporting portions and suspended above the cavity, so that a surface between the one end of the fuse wire and the concave surface of the first curved piece is surfaced The veneers are joined to each other to increase the contact area of the fuse wire with the first electrode, thereby improving the electrical conductivity and reliability of the fuse after combining the fuse wires.

Description

Fuse fuse fixing structure

The invention relates to a fuse wire fixing structure of a fuse, which can fuse the fuse wire and the electrode in a surface-to-surface manner to increase the contact area between the fuse wire and the electrode, and particularly relates to the convex surface of the curved piece of the electrode. The combined structure with the fuse wire, and the combined structure of the concave surface and the fuse wire of the bent piece of the electrode.

A fuse (or fuse, fuse) is a disposable component that is connected to a circuit to protect the circuit, and is provided with a fuse wire made of metal wire or metal sheet; when the current or surge on the circuit is too large When the power is too high, the fuse wire may be generated at a high temperature and blown to form an open circuit to interrupt the conduction of electric energy on the circuit to protect the circuit from burning.

Conventional fuse structures are generally provided with an electrode at each end of an insulating base, and then a fuse wire is soldered on the two electrodes. When used, the two electrodes of the fuse can be respectively soldered to the circuit, so that the electric energy on the circuit is from one of them. The electrodes are conducted through the fuse line to the other electrode and circuit.

However, the electrode of such a fuse is usually a metal piece, and after being attached to the surface of the base, the metal piece of the electrode is flat on the surface of the base, and the conventional fuse wire is usually a circular profile. Metal wire or wire, so when the fuse wire is disposed on the surface of the electrode, it is the contact type of the wire (fuse wire) opposite to the electrode (electrode), which causes the contact area of the fuse wire and the electrode to be difficult to be lifted, and easily affects the fuse in combination. Conductivity and reliability after the fuse line.

In addition, the fuse of the conventional fuse is prone to bursting, arcing, etc. when it is blown. If the bursting energy is not properly released, the fuse casing will be opened and the danger may occur. Therefore, the conventional fuse is disposed on the base thereof. A through hole that releases burst energy; however, when the fuse is soldered or adhered to a circuit board or device, the through hole of the base is easily blocked by solder or adhesive cover and loses its effect.

In view of this, the inventors have accumulated years of research and practical experience in related fields, and have created a fuse fuse fixing structure for the purpose of improving the above-mentioned conventional technology.

Therefore, the main object of the present invention is to provide a fuse wire fixing structure for a fuse, comprising: a base having a first end, a second end, and a position between the first end and the second end An intermediate portion, the intermediate portion is provided with a first supporting portion adjacent to the first end and a second supporting portion adjacent to the second end; a first electrode disposed at the first end, the first electrode is provided with a first a curved piece, the first curved piece has a concave surface, and the concave surface of the first curved piece is disposed on the first supporting portion; and a fuse line is disposed across the first supporting portion and the second supporting portion Between the portions, the outer peripheral surface of one end of the fuse wire and the concave surface of the first bent piece are joined to each other to increase the contact area of the fuse wire with the first electrode, thereby improving the conductive yield of the fuse after combining the fuse wires. And reliability. Improving the fuse line between the conventional fuse and the electrode in a line-to-face manner makes it difficult to increase the contact area, affecting the loss of conductivity and reliability.

According to the above, a first wing portion is respectively disposed on the two sides of the first support portion, and a first concave surface is formed between the first support portion and the first wing portion, and the first curved piece has a convex surface and the first One wing contact.

According to the above, the second end is provided with a second electrode, the second electrode is provided with a second curved piece, the second curved piece has a concave surface, and the concave surface of the second curved piece is disposed on the second surface On the support portion, the outer peripheral surface of the other end of the fuse wire and the concave surface of the second bent piece are joined to each other.

According to the above, a second wing portion is respectively disposed on the two sides of the second support portion, such that a second concave surface is formed between the second support portion and the second wing portion, and the second curved piece has a convex surface and the first Two wing contacts.

According to the above, there is a cavity between the first support portion and the second support portion.

According to the above, the middle portion of the base and the cavity cover a cover body, and the fuse wire is housed inside the cover body.

According to the above, at least one of the top surface and the side surface of the cover body is provided with a through hole communicating with the cavity to prevent the through hole from being lost due to clogging.

According to the above, the first concave surface and the second concave surface are formed as one of a concave surface of the curved concave surface and the concave concave surface, and the outer circumferential surface of one end of the fuse wire and the concave surface of the first curved piece are surface-surfaced. The outer peripheral surface of the other end of the fuse wire and the concave surface of the second bent piece are joined to each other in a veneer manner.

According to the above, an insulating layer is filled between one end of the fuse line, the first supporting portion and the first wing portion, and another insulating layer is filled between the other end of the fuse line and the second supporting portion and the second wing portion.

The present invention will be clearly and fully disclosed, and preferred embodiments thereof will be described in detail, and the embodiments thereof will be described in detail below.

Referring to the first to fourth figures, a schematic diagram of an embodiment of the present invention is disclosed. The fuse line fixing structure of the fuse of the present invention is illustrated by the above-mentioned drawings, comprising a base 1, a first electrode 2, a second electrode 3, A combined structure of a fuse wire 4 and a cover 5. The base 1 has a first end 11 and a second end 12, and an intermediate portion 13 between the first end 11 and the second end 12. The intermediate portion 13 is provided with a first end 11 adjacent to the first end 11. a first supporting portion 14 , a second supporting portion 15 adjacent to the second end 12 , and a cavity 16 between the first supporting portion 14 and the second supporting portion 15 , wherein the first electrode 2 is disposed The first end 11 of the base 1 is disposed at the second end 12 of the base 1.

In a preferred embodiment, a first wing portion 141, 142 is disposed on each side of the first support portion 14 to form a first portion between the first support portion 14 and the first wing portion 141, 142. a concave surface 140; a first bending piece 21 extending between the first supporting portion 14 and the first wing portions 141, 142 is disposed at one end of the first electrode 2, and the other end of the first electrode 2 extends to the first base 1 The bottom of the end portion 11 is a soldering terminal, and the upper and lower surfaces of the first bending piece 21 are respectively disposed as a convex surface 211 attached to the first wing portions 141 and 142 and the first concave surface 140, and a first concave surface 140 facing the first concave surface 140. The upper concave surface 212 is disposed on the first support portion 14 by the concave surface 212 of the first curved piece 21 . A second wing portion 151, 152 is defined on each of the two sides of the second support portion 15 to form a second concave surface 150 between the second support portion 15 and the second wing portion 151, 152. There is a second bending piece 31 extending between the second supporting portion 15 and the second wing portions 151, 152, and the other end of the second electrode 3 extends to the bottom of the second end 12 of the base 1 to become a soldering terminal, the second The upper and lower sides of the curved piece 31 are respectively a convex surface 311 attached to the second wing portions 151, 152 and the second concave surface 150, and a concave surface 312 facing the second concave surface 150, so that the second The concave surface 312 of the curved piece 31 is disposed on the second support portion 15. The fuse wire 4 is disposed between the first support portion 14 and the second support portion 15 and suspended above the cavity 16 such that the outer circumferential surface of one end of the fuse wire 4 and the concave surface of the first curved piece 21 The 212s are joined to each other in a face-to-face manner, and the outer peripheral surface of the other end of the fuse wire 4 and the concave surface 312 of the second bent piece 31 are joined to each other in a face-to-face manner.

It is also shown that the cover 5 is covered on the first support portion 14, the second support portion 15, and the cavity 16 of the intermediate portion 13 of the base 1, so that the fuse wire 4 is housed inside the cover 5.

Referring to FIG. 5 , in a possible embodiment, the first concave surface 140 and the second concave surface 150 may be configured as curved concave surfaces. Please refer to the sixth and seventh figures, and the first concave surface 140 and the second concave surface 150 may also be set as concave concave surfaces. Referring to FIG. 8, the first curved piece 21a of the first electrode 2a is provided with an upwardly facing convex surface 211a and a downwardly facing concave surface 212a for engaging one end of the fuse wire 4 with the first curved piece 21a. The concave surface 212a; the second curved piece of the second electrode may also be provided with an upwardly facing convex surface and a downwardly facing concave surface, such that the other end of the fuse wire engages the second curved sheet concave surface.

It can be understood that the outer peripheral surface of one end of the fuse wire 4 and the concave surface 212 of the first curved piece 21 are mutually joined in a face-to-face manner, and the outer peripheral surface of the other end of the fuse wire 4 is recessed with the second curved piece 31. The surfaces 312 are mutually bonded to each other in a planar manner to increase the contact area of the first electrode 2, the second electrode 3 and the fuse line 4, thereby improving the conductivity and reliability of the fuse after the fuse line 4 is combined. .

As shown in the first, second and fourth figures, in another possible embodiment, the top surface 51 or the side surface 52 of the cover 5 is provided with a through hole 53 communicating with the cavity 16 so that the through hole 53 is provided. Located at a joint portion of the cover 5 and the base 1, the through hole 53 can release the bursting energy generated by the fuse wire 4 when it is blown; thus, when the base 1 is soldered or adhered to the surface of the circuit board or device, The through hole 53 is located on the cover body 5, and the through hole is not disposed on the base, and the through hole 53 is away from the solder or adhesive of the circuit board or the device, so that the through hole 53 is prevented from being lost due to blocking solder or adhesive. .

As shown in the third and fourth embodiments, in another possible embodiment, one end of the fuse wire 4, the first support portion 14 and the first wing portions 141, 142 are filled with an insulating layer 61, and the fuse wire 4 is further Another insulating layer 62 is filled between one end, the second supporting portion 15 and the second wing portions 151, 152; the insulating layers 61, 62 may cover both ends of the fuse wire 4, reducing the exposure of the fuse wire 4 to the cavity The volume of 16 and the insulating layer 61, 62 have a buffering effect when the base 1 and the cover 5 are combined, and the joints of the first wing portion 141 and the second wing portion 151 are not squeezed when assembled. Destroy the structure and thus achieve the protection.

However, the above-mentioned preferred embodiments of the present invention are not intended to limit the scope of the present invention, and any changes and modifications apparent to those skilled in the art should be considered as The essence of the invention.

1‧‧‧Base

11‧‧‧ first end

12‧‧‧ second end

13‧‧‧Intermediate zone

14‧‧‧First support

140‧‧‧First concave

141, 142‧‧‧ first wing

15‧‧‧Second support

150‧‧‧second concave surface

151, 152‧‧‧ second wing

16‧‧‧ hole

2, 2a‧‧‧ first electrode

21, 21a‧‧‧ first curved piece

211, 311, 211a‧‧‧ convex joints

212, 312, 212a‧‧‧ concave joints

3‧‧‧second electrode

31‧‧‧Second bending piece

4‧‧‧Fuse wire

5‧‧‧ cover

51‧‧‧ top surface

52‧‧‧ side

53‧‧‧through hole

61, 62‧‧‧ insulation

The first figure is a perspective view of a preferred embodiment of the invention. The second figure is an exploded perspective view of the first figure. The third figure is a longitudinal cross-sectional view of the first figure. The fourth figure is a transverse cross-sectional view of the first figure. The fifth figure is a schematic diagram of the configuration of the base and the fuse line of the second figure. The sixth figure is a schematic diagram of the configuration of a modified embodiment of the fifth figure. The seventh figure is a configuration diagram of another modified embodiment of the fifth figure. The eighth figure is a schematic view of the configuration of another embodiment.

no

Claims (9)

A fuse fuse fixing structure comprising: a base having a first end, a second end, and an intermediate portion between the first end and the second end, the intermediate portion being provided with an abutting a first supporting portion at one end and a second supporting portion adjacent to the second end; a first electrode disposed at the first end, the first electrode is provided with a first curved piece, the first curved piece has a concave a junction surface, wherein the concave surface of the first bending piece is disposed on the first supporting portion; and a fuse line spanning between the first supporting portion and the second supporting portion, so that one end of the fuse line is outside The faces are joined to the concave faces of the first bent piece. The fuse wire fixing structure of the fuse according to claim 1, wherein a first wing portion is respectively disposed on both sides of the first support portion, so that a first concave surface is formed between the first support portion and the first wing portion. The first curved piece has a convex surface that is in contact with the first wing. The fuse wire fixing structure of the fuse of claim 2, wherein the second end is provided with a second electrode, the second electrode is provided with a second bending piece, and the second bending piece has a concave surface, and The concave surface of the second bending piece is disposed on the second supporting portion, and the outer circumferential surface of the other end of the fuse wire and the concave surface of the second bending piece are engaged with each other. The fuse wire fixing structure of the fuse of claim 3, wherein a second wing portion is respectively disposed on two sides of the second support portion, so that a second concave surface is formed between the second support portion and the second wing portion. The second bending piece has a convex surface contacting the second wing portion. The fuse wire fixing structure of the fuse of claim 4, wherein the first support portion and the second support portion have a cavity therebetween. The fuse wire fixing structure of the fuse according to claim 5, wherein the middle portion of the base and the cavity cover a cover body, so that the fuse wire is housed inside the cover body. The fuse wire fixing structure of the fuse according to claim 6, wherein at least one of the top surface and the side surface of the cover body is provided with a through hole communicating with the cavity. The fuse wire fixing structure of the fuse according to claim 7, wherein the first concave surface and the second concave surface are formed as one of a concave surface of the curved concave surface and the concave concave surface, and the outer circumferential surface of the fuse wire is first and the first surface The concave surfaces of the bent piece are joined to each other in a face-to-face manner, and the outer peripheral surface of the other end of the fuse wire and the concave surface of the second bent piece are joined to each other in a face-to-face manner. The fuse wire fixing structure of the fuse of claim 8, wherein one end of the fuse wire, the first support portion and the first wing portion are filled with an insulating layer, and the other end of the fuse wire, the second support portion and the first Another insulation layer is filled between the two wings.