CN211605039U - Alloy type temperature fuse - Google Patents
Alloy type temperature fuse Download PDFInfo
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- CN211605039U CN211605039U CN202020104885.0U CN202020104885U CN211605039U CN 211605039 U CN211605039 U CN 211605039U CN 202020104885 U CN202020104885 U CN 202020104885U CN 211605039 U CN211605039 U CN 211605039U
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Abstract
The utility model discloses an alloy type temperature fuse relates to the overtemperature prote field of electronic product, including low melting point alloy silk, two metal electrode, shell and closing cap, two metal electrode are connected respectively at the both ends of low melting point alloy silk, are filled in the inner chamber of shell and help the fusing agent, and the low melting point alloy silk is encircleed in helping the fusing agent, and the opening of shell is lived to the closing cap, and the closing cap is worn out to two metal electrode's free end. The utility model discloses alloy type temperature fuse adopts the closing cap to cover the shell opening, utilizes ultrasonic bonding to form sealed with shell and closing cap, perhaps uses the clearance of a small amount of sealing compound seal shell and closing cap, compares with prior art, does not have the sealing compound or uses less sealing compound, can realize quick continuous production.
Description
Technical Field
The utility model relates to an electronic product's excess temperature protection field, concretely relates to alloy type temperature fuse.
Background
When the temperature of the thermal fuse reaches a predetermined fusing temperature, the internal fusible alloy melts and shrinks towards two metal electrodes with the help of the fusing assistant agent, thereby cutting off the circuit.
As is well known, an alloy type thermal fuse is composed of a low melting point alloy wire, a fluxing agent, a metal electrode, and a plastic or ceramic shell. The fusible alloy and the fluxing agent are packaged in a plastic or ceramic shell, the packaging mode is that the opening position of the shell is sealed by curing the sealing glue, and the curing of the sealing glue can be completed only after a certain time and condition.
The manufacturing method of the existing alloy type temperature fuse comprises the following steps: after the fusible alloy and the metal electrode are welded, the fusible alloy and the metal electrode are inserted into a shell filled with fluxing agent, the whole opening position of the shell is sealed by using sealing compound, more sealing compound is needed, and the sealing compound needs to be solidified for a certain time and under certain conditions. The manufacturing method limits the automatic production efficiency of the temperature fuse from materials to finished products, and is not beneficial to integrated production.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an alloy type temperature fuse does not have the sealing compound or uses a small amount of sealing compound, need not to solidify or curing time is short, can quick continuous production.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an alloy type thermal fuse comprises a low-melting-point alloy wire, two metal electrodes, a shell and a sealing cover, wherein two ends of the low-melting-point alloy wire are respectively connected with the two metal electrodes, a fusing assistant agent is filled in an inner cavity of the shell, the low-melting-point alloy wire is enclosed in the fusing assistant agent, the sealing cover seals an opening of the shell, and free ends of the two metal electrodes penetrate out of the sealing cover.
Further, the cover and the shell are connected by ultrasonic welding to seal the gap between the cover and the shell.
Further, the gap between the cover and the housing is sealed with a sealing compound.
Furthermore, two ends of the low-melting-point alloy wire are welded and connected with two metal electrodes.
Furthermore, the metal electrode is fixedly connected with the sealing cover.
Furthermore, the alloy type thermal fuse is provided with a plurality of low-melting-point alloy wires which are arranged side by side at intervals.
Further, the alloy type thermal fuse has two low-melting-point alloy wires.
Further, the metal electrode is cylindrical.
Further, the metal electrode is sheet-shaped.
Furthermore, the two metal electrodes are arranged in parallel.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model discloses alloy type temperature fuse adopts the closing cap to cover the shell opening, and the closing cap forms the assembly relation with the shell, utilizes ultrasonic welding to form sealedly with shell and closing cap after the assembly, perhaps uses the clearance of a small amount of sealing compound seal shell and closing cap, compares with prior art, does not have the sealing compound or uses less sealing compound, can realize quick continuous production.
Drawings
FIG. 1 is a schematic view of an alloy type thermal fuse having one low melting point alloy wire;
FIG. 2 is an exploded view of an alloy type thermal fuse having a single low melting point alloy wire and a cylindrical metal electrode;
FIG. 3 is a schematic view of an alloy type thermal fuse having two low melting point alloy wires;
fig. 4 is an exploded view of an alloy type thermal fuse having two low melting point alloy wires and a metal electrode in a sheet shape.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings and specific embodiments.
The embodiment discloses an alloy type thermal fuse, which comprises a low-melting-point alloy wire 3, two metal electrodes 1a and 1b, a shell 5 and a sealing cover 2, wherein two ends of the low-melting-point alloy wire 3 are respectively connected with the two metal electrodes 1a and 1b, an auxiliary fusing agent 4 is filled in an inner cavity of the shell 5, the low-melting-point alloy wire 3 is enclosed in the auxiliary fusing agent 4, the sealing cover 2 seals an opening of the shell 5, and free ends of the two metal electrodes 1a and 1b penetrate out of the sealing cover 2.
The alloy type thermal fuse may have one or more low melting point alloy wires 3, and fig. 1 and 2 show an example of the alloy type thermal fuse having only one low melting point alloy wire 3, and fig. 3 and 4 show an example of the alloy type thermal fuse having two low melting point alloy wires 3. If there are two or more low-melting-point alloy wires 3, the low-melting-point alloy wires 3 are arranged side by side with a space therebetween, and for example, as shown in fig. 3 and 4, there are two low-melting-point alloy wires 3, the two low-melting-point alloy wires 3 are arranged side by side, and both ends of each low-melting-point alloy wire 3 are connected to two metal electrodes 1a and 1b, respectively.
The shape of the metal electrodes 1a, 1b may be various, for example, a cylindrical shape as shown in fig. 2, or a sheet shape as shown in fig. 4, and the shapes of the metal electrodes 1a, 1b are generally the same. The two metal electrodes 1a and 1b are arranged in parallel, and the low melting point alloy wire 3 is welded between the two metal electrodes 1a and 1b by means of thermal welding, laser welding, or the like. The two metal electrodes 1a and 1b are fixedly connected with the sealing cover 2, specifically, connected together by continuous injection, thermal connection or ultrasonic welding.
The manufacturing method of the alloy type temperature fuse comprises the following steps: connecting the sealing cover 2 and the two metal electrodes 1a and 1b together in a continuous injection, thermal connection or ultrasonic welding mode and the like; the low-melting-point alloy wire 3 is welded between the two metal electrodes 1a and 1b by means of hot welding, laser welding and the like; the two metal electrodes 1a and 1b welded with the low-melting-point alloy wire 3 are inserted into a shell 5 filled with fluxing medium 4, a sealing cover 2 and the shell 5 form an assembly relation, the shell 5 and the sealing cover 2 form a seal by ultrasonic welding after assembly, so that the opening of the shell 5 is sealed, or a sealing glue is adopted to seal a gap between the sealing cover 2 and the shell 5, and ultrasonic welding and the sealing glue can also be combined for use.
The alloy type temperature fuse is sealed by assembling a sealing cover 2 and a shell 5 and then ultrasonically welding the shell 5 and the sealing cover 2 to form sealing, or a small amount of sealing glue is used for sealing a gap between the sealing cover 2 and the shell 5, the former does not need to be cured, the latter needs short curing time, and quick and continuous production is realized.
The alloy type thermal fuse shown in fig. 1 and fig. 2 has two metal electrodes 1a, 1b in cylindrical shape, the two metal electrodes 1a, 1b are connected with a sealing cover 2, a low melting point alloy wire 3 is welded between the two metal electrodes 1a, 1b, the sealing cover 2 and the low melting point alloy wire 3 are assembled in a shell 5 filled with a fluxing agent 4, the low melting point alloy wire 3 is coated in the fluxing agent 4, the sealing cover 2 and the shell 5 form an assembly relation, and the sealing cover 2 and the shell 5 seal a gap by ultrasonic welding.
The two metal electrodes 1a and 1b of the alloy type thermal fuse shown in fig. 3 and 4 are sheet-shaped, the two metal electrodes 1a and 1b are connected with a sealing cover 2, two low-melting-point alloy wires 3 are welded between the two metal electrodes 1a and 1b, the sealing cover 2 and the low-melting-point alloy wires 3 are assembled in a shell 5 filled with a fluxing agent 4, the low-melting-point alloy wires 3 are coated in the fluxing agent 4, the sealing cover 2 and the shell 5 form an assembly relation, and the sealing cover 2 and the shell 5 seal a gap by ultrasonic welding.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An alloy type thermal fuse characterized in that: the low-melting-point alloy wire comprises a low-melting-point alloy wire, two metal electrodes, a shell and a sealing cover, wherein two ends of the low-melting-point alloy wire are respectively connected with the two metal electrodes in a one-to-one correspondence mode, a fusing assistant agent is filled in an inner cavity of the shell, the low-melting-point alloy wire is surrounded in the fusing assistant agent, the sealing cover seals an opening of the shell, free ends of the two metal electrodes penetrate out of the sealing cover, and the sealing cover and the shell are welded through ultrasonic waves to seal a gap between the two metal electrodes.
2. An alloy type thermal fuse according to claim 1, wherein: and two ends of the low-melting-point alloy wire are welded and connected with the two metal electrodes.
3. An alloy type thermal fuse according to claim 1, wherein: the metal electrode is fixedly connected with the sealing cover.
4. An alloy type thermal fuse according to claim 1, wherein: the alloy type temperature fuse is provided with a plurality of low-melting-point alloy wires which are arranged side by side at intervals.
5. An alloy type thermal fuse according to claim 4, wherein: the alloy type temperature fuse is provided with two low-melting-point alloy wires.
6. An alloy type thermal fuse according to claim 1, wherein: the metal electrode is cylindrical.
7. An alloy type thermal fuse according to claim 1, wherein: the metal electrode is in a sheet shape.
8. An alloy type thermal fuse according to claim 1, wherein: the two metal electrodes are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020104885.0U CN211605039U (en) | 2020-01-17 | 2020-01-17 | Alloy type temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020104885.0U CN211605039U (en) | 2020-01-17 | 2020-01-17 | Alloy type temperature fuse |
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| Publication Number | Publication Date |
|---|---|
| CN211605039U true CN211605039U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020104885.0U Active CN211605039U (en) | 2020-01-17 | 2020-01-17 | Alloy type temperature fuse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436944A (en) * | 2021-07-05 | 2021-09-24 | 东莞市贝特电子科技股份有限公司 | Temperature fuse with novel sealing structure and preparation method |
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2020
- 2020-01-17 CN CN202020104885.0U patent/CN211605039U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436944A (en) * | 2021-07-05 | 2021-09-24 | 东莞市贝特电子科技股份有限公司 | Temperature fuse with novel sealing structure and preparation method |
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