CN115083858A - Paster fuse - Google Patents
Paster fuse Download PDFInfo
- Publication number
- CN115083858A CN115083858A CN202110277686.9A CN202110277686A CN115083858A CN 115083858 A CN115083858 A CN 115083858A CN 202110277686 A CN202110277686 A CN 202110277686A CN 115083858 A CN115083858 A CN 115083858A
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- CN
- China
- Prior art keywords
- opening
- fuse
- sides
- conductive
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
Abstract
The invention discloses a patch fuse, which comprises a shell, a conductive fuse wire and a cover body, wherein the shell comprises an opening and a non-airtight internal space; because the inner space of the shell is a non-airtight inner space, the conductive fuse wire is directly placed in the non-airtight inner space, so that the fuse wire is not covered by a material with a poor heat conduction coefficient any more, the accelerated aging of heat accumulation can be avoided, the internal air pressure of the shell can be balanced with the external air pressure of the shell, the conductive fuse wire is not subjected to the pressure generated by the pressure difference between the inside and the outside of the shell, and the reliability of the patch fuse wire is improved.
Description
Technical Field
The present invention relates to a surface mount fuse, and more particularly, to a surface mount device fuse.
Background
The conventional fuse includes a conductive fuse, and when the fuse is connected in series to a circuit loop to be protected and an abnormality occurs in the circuit (for example, an overcurrent), the conductive fuse will be blown out due to overheating, so that the circuit loop to be protected is broken, thereby achieving the function of protecting the circuit. When the conductive fuse is fused, the electric field intensity at two ends of the break point is very high, and the electric arc is easily generated by breaking through the air which is originally an insulating medium, so that the circuit cannot be interrupted in real time and the due effect of the fuse is lost. Therefore, the fuse of the prior art is covered by an arc-extinguishing material, and absorbs the arc generated by the conductive fuse, thereby achieving the arc-extinguishing effect.
The arc-extinguishing material has poor heat conduction efficiency, so that the conductive fuse wire is difficult to dissipate heat to the surface of the fuse wire, and heat is easy to accumulate on the conductive fuse wire; meanwhile, the arc extinguishing material seals the conductive fuse wire in the fuse wire in an airtight manner, and when the external pressure of the fuse wire changes, pressure is generated on the conductive fuse wire due to pressure difference. Both of these problems make the conductive fuse easy to age early, so that the conductive fuse will be blown due to over-high temperature before reaching the rated current, resulting in the reliability of the fuse being reduced, and there is a need for further improvement.
Disclosure of Invention
In view of the above-mentioned drawbacks of the fuse, the main object of the present invention is to provide a patch fuse to improve the reliability of the patch fuse.
In order to achieve the above object, the present invention provides a patch fuse comprising:
a housing having an opening and a non-airtight interior space;
a conductive fuse, including a fusing part, two intermediary parts and two conductive parts, wherein each intermediary part is connected between the corresponding end of the fusing part and the corresponding conductive part, and the fusing part and the two intermediary parts are arranged in the non-airtight inner space of the shell together, and each conductive part is arranged on the opening of the shell and extends out of the shell; and
a cover body arranged at the opening of the shell body.
In the above patch fuse, the two intermediate portions and the fusing portion are bent away from the opening to form an arc.
In the above patch fuse, a gap is formed between at least one side of the cover and the side corresponding to the opening.
The above patch fuse, wherein: the cover body is an airtight cover and is closed to the opening of the shell; and at least one through hole is formed in the cover body.
In the above patch fuse, the at least one through hole is formed at one side of the cover.
The above patch fuse, wherein: the cover body is hermetically covered on the opening of the shell; and at least one through hole formed in the shell.
In the above patch fuse, the opening of the housing and the cover are rectangular, the opening includes two first sides and two second sides, the cover includes two third sides and two fourth sides, wherein: the cover body is accommodated in the opening; and the two conductive parts of the conductive fuse are respectively arranged on the two second side edges of the opening, extend towards the outer side surface of the shell and are flatly attached to the outer side surface of the shell.
In the above patch fuse, the opening of the housing and the cover are rectangular, the opening includes two first sides and two second sides, and the cover includes two third sides and two fourth sides; wherein: the height of the two first side edges of the opening is higher than that of the two second side edges; the second fourth side of the cover body is arranged on the second side of the opening, and the outer surface of the cover body is flush with the second first side of the opening; and the two conductive parts of the conductive fuse are respectively arranged at the two second side edges of the opening, extend towards the corresponding fourth side edge of the cover body respectively and are flatly attached to the outer surface of the cover body.
In the above patch fuse, the opening of the housing and the cover are rectangular, the opening includes two first sides and two second sides, and the cover includes two third sides and two fourth sides; wherein: at least one clamping groove is formed on each of the two second side edges of the opening; the second and fourth sides of the cover body respectively correspond to the clamping grooves of the first side of the opening, and a clamping piece transversely extends to be clamped in the corresponding clamping groove; and the two conductive parts of the conductive fuse are respectively arranged on the two second side edges of the opening, extend towards the outer side surface of the shell and are flatly attached to the outer side surface of the shell.
The above-mentioned patch fuse, wherein the fusing portion of the conductive fuse further comprises: a first portion; and two second parts extending from two ends of the first part and connected to the corresponding intermediate parts, wherein the two second parts form a hole respectively.
The above patch fuse, wherein: the first part of the fusing part is in a straight line shape; and the width of the two intermediate parts is larger than that of the first part of the fusing part.
The above patch fuse, wherein: the fusing portion of the conductive fuse is bent into a non-linear planar path.
It can be seen from the above description that, since the internal space of the housing is a non-airtight internal space, the fusing part is directly disposed in the non-airtight internal space and is not covered by a material with a poor thermal conductivity coefficient, so as to prevent heat accumulation and accelerated aging, and the internal air pressure of the housing can be balanced with the external air pressure of the housing, so that the fusing part disposed in the non-airtight internal space of the housing does not bear the pressure generated by the pressure difference between the inside and the outside of the housing, thereby improving the reliability of the patch fuse.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1A: a perspective view of a first embodiment of the patch fuse of the present invention.
FIG. 1B: fig. 1A is a side perspective view.
FIG. 2: a perspective view of a second embodiment of the patch fuse of the present invention.
FIG. 3: fig. 2 is an exploded perspective view.
FIG. 4A: the section A-A of the section line in FIG. 2.
FIG. 4B: the section of the B-B section line in FIG. 2.
FIG. 5: a cross-sectional view of a third embodiment of the patch fuse of the present invention.
FIG. 6: a cross-sectional view of a fourth embodiment of the patch fuse of the present invention.
FIG. 7A: a cross-sectional view of a fifth embodiment of the patch fuse of the present invention.
FIG. 7B: fig. 7A is a top plan view.
FIG. 8: a perspective view of a second embodiment of the conductive fuse of the present invention.
FIG. 9: a perspective view of a sixth embodiment of the patch fuse of the present invention.
FIG. 10A: a top plan view of a third embodiment of the conductive fuse of the present invention prior to bending.
FIG. 10B: a perspective view of a third embodiment of the conductive fuse of the present invention after bending.
Wherein, the reference numbers:
1a, 1b, 1c, 1d, 1e, 1f Patch fuse
10: housing 101: horizontal plate
102 standing plate 103 through hole
11 opening 111 first side
112, a second side 113, a clamping groove
12 internal space 20 conductive fuse
21 fusing part 211 first part
212 second portion 22 intermediary portion
23 conductive parts 24 holes
30 cover 301 outer surface
31 third side 32 fourth side
321 engaging member 33 through hole
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
the invention provides an improved patch fuse, and the technical content of the invention is explained in detail by a plurality of embodiments in combination with the drawings.
Referring to fig. 1A and 1B, a patch fuse 1A according to a first embodiment of the present invention includes a housing 10, a conductive fuse 20, and a cover 30.
As shown in fig. 3, the housing 10 includes an opening 11 and an inner space 12; in the embodiment, the housing 10 is a long rectangle, and includes a rectangular horizontal plate 101 and upright plates 102 extending perpendicularly from four sides of the horizontal plate 101, wherein the upright plates 102 are connected to each other to form the inner space 12 and the opening 11; the opening 11 of the rectangular housing 10 is rectangular and includes two opposite first sides 111 and two opposite second sides 112, and in one embodiment (as shown in fig. 1A), the two opposite first sides 111 are higher than the two opposite second sides 112; in one embodiment, the first side 111 is a long side, the second side 112 is a short side, and the housing 10 is made of a ceramic material, but not limited thereto.
The conductive fuse 20 is fixed to the opening 11 of the housing 10 and includes a fuse portion 21, two intermediate portions 22 and two conductive portions 23; in the present embodiment, as shown in fig. 1B and fig. 3, each of the intermediate portions 22 is integrally connected between the corresponding end of the fusing portion 21 and the corresponding conductive portion 23, wherein the fusing portion 21 and the two intermediate portions 22 correspond to the inner space 12 of the housing 10 and are bent downward toward the horizontal plate 101 of the housing 10 to form an arc shape; the two conductive parts 23 of the conductive fuse 10 are respectively disposed on the two opposite second sides 112 of the opening 11. In addition, as shown in fig. 8, the fuse portion 21 further includes a first portion 211 and two second portions 212 facing each intermediate portion 22, wherein the first portion 211 is in a shape of a straight line, the width of the first portion 211 is smaller than the width of each second portion 212, and a hole 24 is formed in each second portion 212, so that after the fuse portion 21 is fused, the holes 24 can lengthen the distance between the two ends of the fuse portion 21, thereby reducing the generation probability of electric arcs. As shown in fig. 10A, in another embodiment, the fuse portion 21 is bent to form a non-linear planar path, so that the fuse portion 21 does not increase the distance between the intermediate portions 22 while extending the total length thereof, and is used for protecting a circuit with a smaller rated current (e.g., 10 amperes to 0.5 amperes); the width D1 of the fuse portion 21 is greater than the width D2 of the intermediate portion 22; as shown in fig. 10B, before the conductive fuse 20 is placed in the internal space 12 of the housing 10 shown in fig. 2, the fusing portion 21 and the two intermediate portions 22 of the conductive fuse 20 are bent downward toward the horizontal plate 101 to form an arc shape, that is, the fusing portion 21 and the two intermediate portions 22 are bent away from the opening 11, and two side edges of the fusing portion 21 are bent away from the opening 11 to reduce the width of the fusing portion 21, so that the conductive fuse 20 is more easily placed in the internal space 12 of the housing 10.
The cover 30 covers the opening 11 of the housing 10 to cover the fusing part 21 of the conductive fuse 20 in the inner space 12 of the housing 10; in the present embodiment, as shown in fig. 1A, 1B and 4B, the cover 30 is rectangular, that is, the cover 30 includes two opposite third sides 31 and two opposite fourth sides 32, the two fourth sides 32 are disposed on the two second sides 112 of the opening 11, and the outer surface 301 of the cover 30 is flush with the two opposite first sides 111 of the opening 11, so that the two conductive portions 23 of the conductive fuse 20 are disposed on the two opposite second sides 112 of the opening 11 respectively and bend towards the corresponding fourth sides 32 and outer surface 301 of the cover 30 to be flatly attached thereto; wherein a gap D1 is formed between the two opposite third sides 31 of the cover 30 and the two opposite first sides 111 of the opening 11, so that the internal space 12 communicates with the outside of the housing 10 to form a non-airtight internal space 12; in one embodiment, the cover 30 is made of a ceramic material or a plastic material.
Referring to fig. 2, 3, 4A and 4B, a patch fuse 1B of the present invention is a second embodiment, the patch fuse 1B of the present embodiment is substantially the same as the patch fuse 1A of the first embodiment shown in fig. 1A, but the two opposite first sides 111 and two opposite second sides 112 of the opening 11 of the housing 10 of the present embodiment are equal in height, so that the two conductive parts 23 of the conductive fuse 20 are respectively disposed on the two second sides 112 of the opening 11 of the housing 10, respectively extend toward and are flatly attached to the outer side surfaces of the upright plates 102 corresponding to the housing 10.
Referring to fig. 5, a patch fuse 1c according to a third embodiment of the present invention is shown, wherein the patch fuse 1c of the present embodiment is substantially the same as the patch fuse 1b of the second embodiment shown in fig. 4; however, the cover 30 of the present embodiment is hermetically sealed in the opening 11 of the housing 10, and a through hole 103 is formed on the housing 10, so that the internal space 12 is still a non-hermetic internal space; in the present embodiment, the through hole is formed in the rectangular horizontal plate 101 of the housing 10, but the position of the through hole 103 is not limited thereto, and the through hole may be formed in any vertical plate 102 of the housing 10.
Referring to fig. 6, a fourth embodiment of a patch fuse 1d according to the present invention is shown, in which the patch fuse 1d of the present embodiment is substantially the same as the third embodiment shown in fig. 5; in this embodiment, the cover 30 is also hermetically sealed in the opening 11 of the housing 10, but the cover 30 further forms a through hole 33 to communicate with the internal space 12, so that the internal space 12 can also be a non-hermetic internal space.
Referring to fig. 7A and 7B, a patch fuse 1e of the present invention is a fifth embodiment, the patch fuse 1e of the present embodiment is substantially the same as the second embodiment shown in fig. 2, but the patch fuse 1d forms a through hole 33 on two opposite third side edges 31 of the cover 30 to communicate with the internal space 12, so that the internal space 12 can also communicate with the outside of the housing 10.
Referring to fig. 9, a sixth embodiment of a patch fuse 1f according to the present invention is shown, in which the patch fuse 1f of the present embodiment is substantially the same as the second embodiment shown in fig. 2; in this embodiment, two engaging grooves 113 are respectively formed on two opposite second sides 112 of the opening 11 of the housing 10, and two engaging members 321 respectively extend from the two opposite fourth sides 32 corresponding to the cover 30 to be tightly fitted with the engaging grooves 113 of the opening 11; in one embodiment, the cover 30 is made of a plastic material.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A patch fuse, comprising:
a housing having an opening and a non-airtight interior space;
a conductive fuse, including a fusing part, two intermediary parts and two conductive parts, wherein each intermediary part is connected between the corresponding end of the fusing part and the corresponding conductive part, and the fusing part and the two intermediary parts are arranged in the non-airtight inner space of the shell together, and each conductive part is arranged on the opening of the shell and extends out of the shell; and
a cover body covering the opening of the shell.
2. The patch fuse of claim 1, wherein the two intermediate portions and the fusing portion are bent away from the opening to form an arc.
3. A patch fuse in accordance with claim 2 wherein a gap is formed between at least one side of said cover and a side thereof corresponding to said opening.
4. The patch fuse of claim 2, wherein:
the cover body is hermetically covered on the opening of the shell; and
at least one through hole is formed in the cover body.
5. A patch fuse in accordance with claim 4 wherein said at least one aperture is formed in one of said sides of said cover.
6. A patch fuse in accordance with claim 2 wherein:
the cover body is hermetically covered on the opening of the shell; and
at least one through hole is formed in the shell.
7. The patch fuse of any one of claims 3-6, wherein the opening of the housing and the cover are rectangular, the opening comprising two first sides and two second sides, the cover comprising two third sides and two fourth sides, wherein:
the cover body is accommodated in the opening; and
the two conductive parts of the conductive fuse are respectively arranged on the two second side edges of the opening, extend towards the outer side surface of the shell and are flatly attached to the outer side surface of the shell.
8. A patch fuse according to any one of claims 3 to 6 wherein said opening of said housing and said cover are rectangular, said opening including two first sides and two second sides, said cover including two third sides and two fourth sides; wherein:
the height of the two first side edges of the opening is higher than that of the two second side edges;
the second fourth side of the cover body is arranged on the second side of the opening, and the outer surface of the cover body is flush with the second first side of the opening; and
the two conductive parts of the conductive fuse are respectively arranged at the two second side edges of the opening, extend towards the corresponding fourth side edges of the cover body respectively and are flatly attached to the outer surface of the cover body.
9. A patch fuse according to any one of claims 3 to 6 wherein said opening of said housing and said cover are rectangular, said opening including two first sides and two second sides, said cover including two third sides and two fourth sides; wherein:
at least one clamping groove is formed on each of the two second side edges of the opening;
the second and fourth sides of the cover body correspond to the clamping grooves of the first side of the opening respectively, and a clamping piece extends transversely to be clamped in the corresponding clamping groove; and
the two conductive parts of the conductive fuse are respectively arranged on the two second side edges of the opening, extend towards the outer side surface of the shell and are flatly attached to the outer side surface of the shell.
10. The patch fuse according to any one of claims 1 to 6, wherein the fusing portion of the conductive fuse further comprises:
a first portion; and
two second parts extending from two ends of the first part and connected to the corresponding intermediate parts, wherein the two second parts form a hole respectively.
11. A patch fuse in accordance with claim 10 wherein:
the first part of the fusing part is in a straight line shape; and
the width of the two intermediate parts is larger than that of the first part of the fusing part.
12. A patch fuse according to any one of claims 1 to 6 wherein:
the fusing portion of the conductive fuse is bent into a non-linear planar path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110277686.9A CN115083858A (en) | 2021-03-15 | 2021-03-15 | Paster fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110277686.9A CN115083858A (en) | 2021-03-15 | 2021-03-15 | Paster fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115083858A true CN115083858A (en) | 2022-09-20 |
Family
ID=83240601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110277686.9A Pending CN115083858A (en) | 2021-03-15 | 2021-03-15 | Paster fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115083858A (en) |
-
2021
- 2021-03-15 CN CN202110277686.9A patent/CN115083858A/en active Pending
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| PB01 | Publication | ||
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