CN201536089U - Ultra-microfuse - Google Patents
Ultra-microfuse Download PDFInfo
- Publication number
- CN201536089U CN201536089U CN2009201835879U CN200920183587U CN201536089U CN 201536089 U CN201536089 U CN 201536089U CN 2009201835879 U CN2009201835879 U CN 2009201835879U CN 200920183587 U CN200920183587 U CN 200920183587U CN 201536089 U CN201536089 U CN 201536089U
- Authority
- CN
- China
- Prior art keywords
- ailhead
- fuse
- stilling
- canals
- superminiature
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an ultra-microfuse. The ultra-microfuse comprises a glass tube body, a fuse arranged in the glass tube body and nailheads arranged at two ends of the glass tube body, wherein the nailheads are processed by metal or alloy wires of which the linear expansion coefficient is the same as or similar to that of the corresponding glass tube body, and the nailheads and the glass tube body are sealed together by fusing. The ultra-microfuse has the advantages of good contact, low rejection rate, and low probability of fracture during use.
Description
Technical field
The utility model relates to the fuse field, relates in particular to a kind of superminiature fuse.
Background technology
Existing fuse structure comprises body, is arranged on the fuse in the body, is arranged on the lead cap at body two ends, stretches out the external lead wire pin on the lead cap.The body of this type of fuse adopts glass tube or earthenware mostly, this type of fuse is being carried out in the course of processing, especially with lead cap and body sealing-in the time, good in order to ensure contacting between lead cap and body, one of existing processing method is to adopt glue to connect, promptly adopt silica gel (or other viscose glue) bonding at lead cap and body cooperation place, but the bonding strength of silica gel is not enough, and easily comes off, after the time is long, easily cause the matching loose between lead cap and body, influence the useful life of fuse; Two of method is to adopt the excessive method of tin, promptly adopt the mode of putting tin at lead cap and body cooperation place, make tin be full of the gap, cooperation place, can manage it but these class methods are applied to general minitype fuse, as be applied to the superminiature fuse, because of the type body of superminiature fuse minimum, the gap of its lead cap and body auxiliary section is littler, and on the one hand, operation easier is big, on the other hand, the consumption of tin also is difficult to control; Three of method is to adopt the method for clamp-oning, be about to lead cap and body employing interference fit tight fit or the periphery of lead cap is designed to have a little outward-dipping conical surface and a body tight fit, but because of body mostly is glass tube greatly, clamp-on in the process, cause body to break easily, thereby cause yields not high.
In view of the existing shortcomings and deficiencies of said method, the inventor develops a kind of superminiature fuse and manufacture method thereof.
The utility model content
The purpose of this utility model is to provide a kind of contact good, and percent defective is low, in use is difficult for the superminiature fuse that breaks.
For achieving the above object, the technical solution of the utility model is:
A kind of superminiature fuse, comprise canals of stilling, be arranged on the fuse in the canals of stilling and be arranged on the ailhead at canals of stilling two ends, ailhead is to adopt the metal or alloy wire rod machine-shaping identical or close with corresponding glass body coefficient of linear expansion, and ailhead and canals of stilling pass through the heating means sealing by fusing together.
Described external diameter cooperates with the internal diameter of canals of stilling, and its fit tolerance is ± 0.05mm.
Described glass is transparent lead-free glass, and its coefficient of linear expansion is 39 * 10
-7～54 * 10
-7/ ℃.
Described ailhead adopts Dumet wire (DUMENT) machine-shaping.
Described ailhead adopts and can cut down silk (KOVAR) machine-shaping.
Described ailhead adopts the machine-shaping of alloy molybdenum.
Described ailhead adopts alloyed tungsten machine-shaping.
Described canals of stilling and ailhead are square or circular, and ailhead external lead wire pin as required.
Described canals of stilling and ailhead are as being circular, and ailhead and canals of stilling also add a square enclosing cover outward.
Adopt said structure, superminiature fuse of the present utility model, the type body is little, can satisfy the demand of minitype circuit board, and ailhead adopts the coefficient of linear expansion material identical or close with canals of stilling, and employing mode of heating and canals of stilling sealing by fusing, can reduce stress between ailhead and the canals of stilling, and have excellent cementability and adherence for a long time, make that ailhead and body contact performance are good, percent defective is low, in use is difficult for breaking.
Description of drawings
Fig. 1 is an ailhead structural representation of the present utility model;
Fig. 2 is a canals of stilling structural representation of the present utility model;
Fig. 3 is a finished product schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
With reference to Fig. 3, a kind of superminiature fuse, comprise canals of stilling 1, be arranged on the fuse 3 in the canals of stilling 1 and be arranged on the ailhead 2 at body 1 two ends, ailhead 2 is to adopt the metal or alloy wire rod machine-shaping identical or close with corresponding glass body 1 coefficient of linear expansion, and ailhead 2 passes through the heating means sealing by fusing together with canals of stilling 1.
In the preferred embodiment of the present utility model, see figures.1.and.2, canals of stilling 1 and ailhead 2 are circular (also can be square), and ailhead 2 is external lead wire pin 31 (as shown in Figure 3) as required, can certainly not add terminal pin 31, when canals of stilling 1 and ailhead 2 when being circular, ailhead 2 and canals of stilling 1 are outer also can to add a square enclosing cover as required, to be applicable to different environments for use.The glass that canals of stilling 1 adopts is the pyrex that transparent lead-free, high chemical stability and hydrolytic resistance can be good, and its coefficient of linear expansion is 39 * 10
-7～54 * 10
-7/ ℃.Correspondingly, in order to reduce the stress between ailhead 2 and the canals of stilling 1, guarantee to have good adherence behind the sealing by fusing between ailhead 2 and the canals of stilling 1, and the cementability that has excellence for a long time, ailhead 2 adopts Dumet wire (DUMENT) machine-shaping, also can be to cut down silk (KOVAR), alloy molybdenum, alloyed tungsten or other metal wire rod machine-shaping identical or close with the glass linear expansion coefficient; The external diameter of ailhead 2 cooperates with the internal diameter of canals of stilling 1, and its fit tolerance is ± 0.05mm; Fuse contact performance of the present utility model is good, and percent defective is low, in use is difficult for breaking.
Claims (9)
1. superminiature fuse, comprise canals of stilling, be arranged on the fuse in the canals of stilling and be arranged on the ailhead at canals of stilling two ends, it is characterized in that: described ailhead is to adopt the metal or alloy wire rod machine-shaping identical or close with corresponding glass body coefficient of linear expansion, and ailhead and canals of stilling pass through the heating means sealing by fusing together.
2. a kind of superminiature fuse as claimed in claim 1 is characterized in that: the external diameter of described ailhead cooperates with the internal diameter of canals of stilling, and its fit tolerance is ± 0.05mm.
3. a kind of superminiature fuse as claimed in claim 1 is characterized in that: described glass is transparent lead-free glass, and its coefficient of linear expansion is 39 * 10
-7～54 * 10
-7/ ℃.
4. a kind of superminiature fuse as claimed in claim 1 is characterized in that: described ailhead adopts Dumet wire machine-shaping.
5. a kind of superminiature fuse as claimed in claim 1 is characterized in that: described ailhead adopts can cut down a machine-shaping.
6. a kind of superminiature fuse as claimed in claim 1 is characterized in that: described ailhead adopts the machine-shaping of alloy molybdenum.
7. a kind of superminiature fuse as claimed in claim 1 is characterized in that: described ailhead adopts alloyed tungsten machine-shaping.
8. a kind of superminiature fuse as claimed in claim 1 or 2 is characterized in that: described canals of stilling and ailhead are square or circular, and ailhead external lead wire pin.
9. a kind of superminiature fuse as claimed in claim 8 is characterized in that: described canals of stilling and ailhead are as being circle, and ailhead and canals of stilling also add a square enclosing cover outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201835879U CN201536089U (en) | 2009-10-29 | 2009-10-29 | Ultra-microfuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201835879U CN201536089U (en) | 2009-10-29 | 2009-10-29 | Ultra-microfuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201536089U true CN201536089U (en) | 2010-07-28 |
Family
ID=42535865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201835879U Expired - Fee Related CN201536089U (en) | 2009-10-29 | 2009-10-29 | Ultra-microfuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201536089U (en) |
-
2009
- 2009-10-29 CN CN2009201835879U patent/CN201536089U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20111029 |