CN203300585U - Surface mounting type fuse without soldering tin at ends - Google Patents
Surface mounting type fuse without soldering tin at ends Download PDFInfo
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- CN203300585U CN203300585U CN2013203467670U CN201320346767U CN203300585U CN 203300585 U CN203300585 U CN 203300585U CN 2013203467670 U CN2013203467670 U CN 2013203467670U CN 201320346767 U CN201320346767 U CN 201320346767U CN 203300585 U CN203300585 U CN 203300585U
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- fuse
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- soldering tin
- link
- connecting portion
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Abstract
The utility model discloses a surface mounting type fuse without soldering tin at ends in the technical filed of circuit protection elements. The surface mounting type fuse comprises an insulating shell, a fuse body and two metal end caps, wherein the insulating shell is internally provided with an accommodating cavity, the fuse body is arranged in the accommodating cavity, the two metal end caps are covered at two ends of the shell respectively, two ends of the fuse body extend from two ends of the shell respectively to the external part of the shell and are bent toward the end faces of the shell to form connecting parts, and the two end caps are contacted with the connecting parts of the corresponding ends respectively and clamp the connecting parts on the end faces of the shell. According to the utility model, the fuse body and the end caps are connected in a tight contact mode, and soldering tin is not required as connection between the end caps and the fuse body, thereby avoiding a phenomenon of poor tin outlet in the assembling and fusing process of the fuse. Meanwhile, the fuse body is fully protected in the insulating shell and the end caps, and a buffer action is carried out when the fuse body is subjected to environmental thermal shocks, thereby being safe and reliable, reducing the consumption of the soldering tin, reducing the material cost and the assembly heating cost, and being capable of being applied to high-current products.
Description
Technical field
The utility model relates to the circuit protecting element technical field, relates in particular to the surface attaching type fuse of a kind of termination non-soldering tin.
Background technology
Fuse refers to when electric current surpasses setting, with the heat that itself produces, makes melt fusing, a kind of electrical equipment of open circuit.Fuse is to surpass setting after a period of time according to electric current, with the heat that himself produces, makes the melt fusing, thereby circuit is disconnected, a kind of current protector that uses this principle to make.Fuse is widely used in high and low voltage electric distribution system and control system and power consumption equipment, as the protector of short circuit and overcurrent, is to apply one of the most general protection device.Fuse is as a kind of simple in structure, dependable performance ground circuit protecting element; more and more power supplies that are used in instrument and meter, industrial control equipment and various information equipment; due to progressively miniaturization and the automation of relevant device, plug-in unit class fuse is replaced with the surface attaching type fuse gradually simultaneously.
At present, existing surface attaching type fuse is basically usingd scolding tin and is connected with end cap and fix as internal electric, it as publication number, is the disclosed fuse of United States Patent (USP) of US5214406A, also to using scolding tin to connect with end cap and fix as internal electric, because this surface attaching type fuse in use must pass through Reflow Soldering or wave-soldering to be welded on circuit board, the scolder of fuse inside melts mobile again in this welding process, cause unpredictable interior resistive large or diminish, even likely cause end cap to come off.The United States Patent (USP) that is US20100245025A as publication number discloses the fuse structure that a kind of termination does not have scolding tin, but the fuse of this fuse is participated in the Reflow Soldering welding process directly, material and surface treatment to fuse limit to some extent, the insulation crust of fuse only plays supporting function simultaneously, to the stress that is subject to before and after the fuse-link Reflow Soldering, can not be offset, easily under ambient temperature is impacted, be affected the reliability of fuse-link.
The utility model content
The purpose of this utility model is to provide a kind of surface attaching type fuse of scolding tin as the termination non-soldering tin that is connected between end cap and fuse-link that do not need, and the manufacture method of the surface attaching type fuse of this termination non-soldering tin also is provided.
For achieving the above object, the technical solution of the utility model is for providing the surface attaching type fuse of a kind of termination non-soldering tin, include tubular insulation crust that inside offers containing cavity, be arranged on fuse-link in containing cavity, two respectively lid be located at the metal end caps at shell two ends, the two ends of fuse-link are extended housing exterior and are bent to form connecting portion to the shell end face by the shell two ends respectively, and two end caps contact with the connecting portion of respective end respectively and connecting portion is clamped on the shell end face.
Preferably, the end of described connecting portion extends the lateral surface of shell and is attached on the lateral surface of shell to the bending of the lateral surface of shell, and two end caps contact and the connecting portion end is clamped on the shell lateral surface with the connecting portion end of respective end respectively.
Preferably, between the connecting portion of described fuse-link and end cap, pass through laser welding.
Preferably, described fuse-link is positioned at the bottom of containing cavity, and in containing cavity, engaging has flexible glue, and the top, bottom of flexible glue is pressed on fuse-link.
Preferably, described shell bottom offer the groove of getting out of a predicament or an embarrassing situation that is connected with containing cavity, fuse-link is positioned at the groove top of getting out of a predicament or an embarrassing situation.
Preferably, described shell includes base, covers the cover plate that is located at base top, and containing cavity is opened in base top.
Preferably, described shell offers respectively in the both sides at containing cavity top the groove of topping bar, and the both sides of cover plate are fastened on respectively in the groove of topping bar accordingly.
compared with prior art, the utility model includes the tubular insulation crust that inside offers containing cavity, be arranged on the fuse-link in containing cavity, two cover respectively the metal end caps that is located at the shell two ends, the two ends of fuse-link are extended housing exterior and are bent to form connecting portion to the shell end face by the shell two ends respectively, two end caps contact with the connecting portion of respective end respectively and connecting portion are clamped on the shell end face, mode by close contact between fuse-link of the present utility model and end cap is connected, do not need scolding tin as being connected between end cap and fuse-link, in the higher nominal current product, avoided fuse to go out the bad phenomenon of tin in assembling and fusing process, fuse-link is adequately protected within insulation crust and end cap simultaneously, can avoid the impact of scolding tin on operating chacteristics, cushioning effect is arranged when being subjected to the environment thermal shock, the resistance of enhancing to environmental impact, safe and reliable, reduced the consumption of scolding tin, Material Cost and assembling heating cost have been reduced, can be applicable to large current product.
The accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present utility model.
Fig. 2 is schematic cross-section of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and preferred embodiment, please refer to shown in Fig. 1-2, the utility model includes tubular insulation crust 1 that inside offers containing cavity 11, be arranged on fuse-link 2 in containing cavity 11, two respectively lid be located at the metal end caps 3 at shell 1 two ends.Fuse-link 2 is formed by the metal tape punching, and the metal tape material includes but not limited to silver, copper, zinc, tin and alloy thereof.Fuse-link 2 has difformity according to product rated current and operating chacteristics, and for the ease of automated production, fuse-link 2 is punched into continuous and equidistant given shape on metal tape.Fuse-link 2 has two kinds of formation methods, and a kind of is directly on copper sheet, to go out certain shape, is applicable to the situation of larger rated current; Another is that copper sheet is gone out two relative electrodes, then on electrode, welds filament, is applicable to the situation than small rated currents.End cap 3 is formed by the copper sheet punching, and outer surface is electroplated, and the coating material can consist of solderable metals such as silver, tin, gold.For guaranteeing the reliable installation of end cap 3 on shell 1, end cap 3 is tight fit with shell 1.
It is outside and to shell 1 end face, be bent to form 21, two end caps 3 of connecting portion and with the connecting portion 21 of respective end, contact respectively and connecting portion 21 is clamped on shell 1 end face that shell 1 is extended by shell 1 two ends respectively in the two ends of fuse-link 2.The end of connecting portion 21 extends the lateral surface of shell 1 and is attached on the lateral surface of shell 1 to the bending of the lateral surface of shell 1, and two end caps 3 contact and connecting portion 21 ends are clamped on shell 1 lateral surface with connecting portion 21 ends of respective end respectively.Between the connecting portion 21 of fuse-link 2 and end cap 3, by laser welding, be integral, stabilized structure, guarantee that end cap 3 is connected with the reliable electric between fuse-link 2.The lateral surface of shell 1 can be forward and backward, the upper and lower surface of shell 1.
Fuse-link 2 is positioned at the bottom of containing cavity 11, and in containing cavity 11, engaging has flexible glue 4, and the top, bottom of flexible glue 4 is pressed on fuse-link 2.The width of flexible glue 4 is slightly larger than the width of containing cavity 11, and flexible glue 4 can firmly be stuck on the containing cavity 11 of base 14.Flexible glue 4 is made by organosilicon, can tolerate 280 degree high temperature, surpasses the Reflow Soldering temperature.
Shell 1 offers respectively in the both sides at containing cavity 11 tops the groove 13 of topping bar, and be used to supporting cover plate 15, the both sides of cover plate 15 are fastened on respectively in the groove 13 of topping bar accordingly, and the depth ratio cover plate 15 of the groove 13 of topping bar is bigger.The bottom of shell 1 offers the groove 12 of getting out of a predicament or an embarrassing situation, and containing cavity 11 is connected with the groove 12 of getting out of a predicament or an embarrassing situation, and fuse-link 2 is positioned at groove 12 tops of getting out of a predicament or an embarrassing situation, and makes after fuse-link 2 is pressed onto the end, below also to have living space.
mode by close contact between fuse-link 2 of the present utility model and end cap 3 is connected, do not need scolding tin as being connected between end cap 3 and fuse-link 2, in the higher nominal current product, avoided fuse to go out the bad phenomenon of tin in assembling and fusing process, fuse-link 2 is adequately protected within insulation crust 1 and end cap 3 simultaneously, can avoid the impact of scolding tin on operating chacteristics, cushioning effect is arranged when being subjected to the environment thermal shock, the resistance of enhancing to environmental impact, safe and reliable, reduced the consumption of scolding tin, Material Cost and assembling heating cost have been reduced, can be applicable to large current product.
Above disclosed is only preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belong to the scope that the utility model is contained.
Claims (7)
1. the surface attaching type fuse of a termination non-soldering tin, it is characterized in that: include tubular insulation crust that inside offers containing cavity, be arranged on fuse-link in described containing cavity, two respectively lid be located at the metal end caps at described shell two ends, the two ends of described fuse-link are extended described housing exterior and are bent to form connecting portion to described shell end face by described shell two ends respectively, and two described end caps contact with the connecting portion of respective end respectively and described connecting portion is clamped on described shell end face.
2. the surface attaching type fuse of termination as claimed in claim 1 non-soldering tin, it is characterized in that: the end of described connecting portion extends the lateral surface of described shell and is attached on the lateral surface of described shell to the bending of the lateral surface of described shell, and two described end caps contact with the connecting portion end of respective end respectively and described connecting portion end is clamped on described shell lateral surface.
3. the surface attaching type fuse of termination as claimed in claim 1 non-soldering tin, is characterized in that: between the connecting portion of described fuse-link and described end cap, pass through laser welding.
4. the surface attaching type fuse of termination as claimed in claim 1 non-soldering tin, it is characterized in that: described fuse-link is positioned at the bottom of described containing cavity, and in described containing cavity, engaging has flexible glue, and the top, bottom of described flexible glue is pressed on described fuse-link.
5. the surface attaching type fuse of termination as claimed in claim 1 non-soldering tin is characterized in that: described shell bottom offer the groove of getting out of a predicament or an embarrassing situation that is connected with described containing cavity, described fuse-link is positioned at the described groove top of getting out of a predicament or an embarrassing situation.
6. the surface attaching type fuse of termination as claimed in claim 1 non-soldering tin is characterized in that: described shell includes the cover plate that base, lid are located at described base top, and described containing cavity is opened in described base top.
7. the surface attaching type fuse of termination as claimed in claim 6 non-soldering tin, it is characterized in that: described shell offers respectively in the both sides at described containing cavity top the groove of topping bar, and the both sides of described cover plate are fastened on respectively in the groove of topping bar accordingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203467670U CN203300585U (en) | 2013-06-17 | 2013-06-17 | Surface mounting type fuse without soldering tin at ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203467670U CN203300585U (en) | 2013-06-17 | 2013-06-17 | Surface mounting type fuse without soldering tin at ends |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203300585U true CN203300585U (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203467670U Expired - Fee Related CN203300585U (en) | 2013-06-17 | 2013-06-17 | Surface mounting type fuse without soldering tin at ends |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203300585U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337430A (en) * | 2013-06-17 | 2013-10-02 | 东莞市博钺电子有限公司 | Surface mounting type fuse with non-solder ends and manufacturing method thereof |
| CN109103521A (en) * | 2018-08-23 | 2018-12-28 | 江门市钧崴电子科技有限公司苏州分公司 | Battery protecting apparatus and its heating structure, electronic equipment |
-
2013
- 2013-06-17 CN CN2013203467670U patent/CN203300585U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337430A (en) * | 2013-06-17 | 2013-10-02 | 东莞市博钺电子有限公司 | Surface mounting type fuse with non-solder ends and manufacturing method thereof |
| CN109103521A (en) * | 2018-08-23 | 2018-12-28 | 江门市钧崴电子科技有限公司苏州分公司 | Battery protecting apparatus and its heating structure, electronic equipment |
| CN109103521B (en) * | 2018-08-23 | 2024-05-03 | 钧崴电子科技股份有限公司 | Battery protection device, heating structure thereof and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20190617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |