CN102891052A - Protective tube - Google Patents
Protective tube Download PDFInfo
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- CN102891052A CN102891052A CN2011102021545A CN201110202154A CN102891052A CN 102891052 A CN102891052 A CN 102891052A CN 2011102021545 A CN2011102021545 A CN 2011102021545A CN 201110202154 A CN201110202154 A CN 201110202154A CN 102891052 A CN102891052 A CN 102891052A
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- fuse
- carrier
- protective tube
- fuse carrier
- contact jaw
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Abstract
The invention discloses a protective tube, comprising a fuse, a fuse carrier and a fuse contact end, wherein both ends of the fuse penetrated through the fuse carrier and exposed outside the fuse carrier are respectively bent along an outer wall of the fuse carrier; the fuse carrier is inserted into the fuse contact end and fixed by crimping; a gap between an inner wall of the fuse contact end and the outer wall of the fuse carrier is less than the diameter of the fuse; the fuse is deformed under the squeezing of the fuse contact end and the fuse carrier; the fuse and the fuse contact end contact directly and closely; and no other materials taken as conductors exist between the fuse and the fuse contact end, so that each protective tube has the identical ''current-fusing time'' parameter, the specifications of the product are more uniform and the right product can be selected accurately according to the requirements in actual use. In addition, as no soldering tin is used in the production process of the fuse tube, the adverse effect on human health due to harmful gas generated by fusing the soldering tin in the production process is avoided. And furthermore, the production cost of the protective tube can be reduced greatly, thereby being beneficial for the environmental protection.
Description
Technical field
The present invention relates to the technical field of protective tube, a kind of scolding tin that need not specifically, make fuse and the direct close contact of fuse contact jaw, thus the electric current of unified product-fusing time parameter, and the while can be reduced product cost, be reduced the protective tube of noxious gas emission in the production process.
Background technology
Protective tube, namely fuse is a kind of being installed in the circuit, guarantees the electric elements of circuit safety operation, is also referred to as fuse, the IEC127 standard is defined as it " fuse-link (fuse-link) ".Fuse in the protective tube can current anomaly be elevated to certain height and certain in, electric current is cut off in self fusing, thereby plays the effect of protective circuit safe operation.
Fig. 1 is the cutaway view of protective tube of the prior art.
As shown in Figure 1, the protective tube 1 of prior art comprises: fuse 2, and the main body of formation protective tube is cut off the electric current that flows through protective tube during high temperature fusing; Fuse carrier 3 is made of the insulation material, is set to the tubular structure of hollow, and fuse passes the space of fuse carrier inside; Fuse contact jaw 4 is arranged on the two ends of fuse carrier, is made of metal material, and two fuse contact jaws form circuit communication with the two ends of above-mentioned fuse respectively.In traditional protective tube, external or domestic present production technology all is with scolding tin 6 fuse 2 to be wrapped, and scolding tin 6 be filled in fuse carrier 4(be generally glass tube or earthenware) and fuse contact jaw 3 (being the copper cap that copper material is made) between the slit in, make fuse, fuse carrier, the fuse contact jaw is fixed together becomes protective tube, forms circuit communication between above-mentioned scolding tin, fuse and the fuse contact jaw.
In the protective tube of prior art, in order to make fuse and fuse contact jaw form circuit communication, generally used scolding tin to fill in the fuse carrier, but contained a large amount of lead compositions in the general tin material, the use that contains the slicker solder material has not met the requirement that environmental protection is produced.For fear of containing the pollution that brings in the use of slicker solder material, present manufacturing enterprise both domestic and external uses some low leaded soldering tin materials (being commonly called as without slicker solder) instead, but the material cost of this scolding tin will exceed original tin material cost about 1/3rd, more because the pure tin material belongs to rare non-ferrous metal, its price comparison is expensive, as in protective tube production, using low leaded scolding tin on a large scale instead, then not only caused the raising of product cost, and or do not had solution problem fundamentally.
In addition, that with scolding tin fuse, fuse carrier, fuse contact jaw to be formed one be protective tube in traditional production technology, between fuse and fuse contact jaw, exist like this scolding tin as being communicated with medium, be not real directly contact of zero ohm thus between fuse and fuse conductor, because the media such as scolding tin can produce contact heat by conduction effect when overcurrent in actual track, this thermal effect can directly affect " electric current-fusing time " parameter of protective tube.Because there is individual difference in the welding manner of fuse and fuse contact jaw to scolding tin in each protective tube because the trickle difference in welding position makes in the production and assembly of protective tube, so can't unify accurately " electric current-fusing time " parameter of protective tube to be determined.
In the actual production of protective tube, need melts soldering tin, and in the process of fusing scolding tin contained some chemical substances of scolding tin can along with heated volatile in operational environment, the mist after its atomizing very is harmful to operative employee's health.Although corresponding suction facility has been installed by some enterprises, still filling the air these mists in the workplace, the suction effect is very little, can't play the effect of radical cure to poisonous mist.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of scolding tin that need not, make fuse and the direct close contact of fuse contact jaw, thereby the electric current of unified product-fusing time parameter, the while can be reduced product cost, be reduced the protective tube of noxious gas emission in the production process.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
Protective tube of the present invention comprises: fuse, and the main body of formation protective tube is cut off the electric current that flows through protective tube during high temperature fusing; The fuse carrier is made of the insulation material, is set to the tubular structure of hollow, and fuse passes the space of fuse carrier inside; The fuse contact jaw, be arranged on the two ends of fuse carrier, consisted of by metal material, two fuse contact jaws form circuit communication with the two ends of above-mentioned fuse respectively, the two ends that pass and be exposed at the fuse of fuse carrier outside outward bend along the outer wall of fuse carrier respectively, the fuse carrier is inserted in the fuse contact jaw and crimping is fixed, and the space between fuse contact jaw inwall and the fuse carrier outer wall is less than the diameter of fuse, fuse deformation under the extruding of fuse contact jaw and fuse carrier, direct close contact between fuse and the fuse contact jaw.
The present invention can also adopt following technical measures:
The length of the described fuse carrier counterpart that is inserted into fuse contact jaw inside is greater than the length of the fuse counterpart of being close to the bending of fuse carrier outer wall.
Filling bonding agent between described fuse carrier and the fuse contact jaw.
The both ends of the surface of the fuse carrier of described tubulose and the binding site between its outer wall are set to fillet structure.
The radius of corner of the fillet structure that arranges on the described fuse carrier greater than fuse support tube wall thickness 1/3rd and less than 1/2nd of pipe thickness.
The part that described fuse carrier two ends arrange fillet structure respectively accounts for the 1/4-1/2 of corresponding fuse carrier end face circumference, and the fillet structure at two ends is symmetrical with respect to the axis of fuse carrier, and fuse is in the fillet structure correspondence position bending at fuse carrier two ends.
The inwall of described fuse contact jaw and the binding site of inner bottom surface are set to fillet structure.
The opposite direction that the described two ends that pass the fuse of fuse carrier bend along fuse carrier outer wall.
Advantage and good effect that the present invention has are:
Space in the protective tube of the present invention between fuse contact jaw inwall and the fuse carrier outer wall is less than the diameter of fuse, fuse deformation under the extruding of fuse contact jaw and fuse carrier, direct close contact between fuse and the fuse contact jaw, there are not other materials as conductor between the two, thereby in the certain situation of working condition, guaranteed that each protective tube has same " electric current-fusing time " parameter, make the specification of product more unified, in the use of reality, also can select accurately as requested suitable product.In addition; owing in protective tube production process of the present invention, do not use scolding tin; so adverse effect of having avoided the pernicious gas that melts soldering tin produces in the production process that health is caused; in protective tube, do not use scolding tin can significantly reduce simultaneously the production cost of protective tube as the filler between fuse carrier and the fuse contact jaw, more be conducive to environmental protection.
Description of drawings
Fig. 1 is the cutaway view of protective tube in the prior art;
Fig. 2 is the cutaway view of protective tube of the present invention;
Fig. 3 is the schematic diagram of fuse carrier in the protective tube of the present invention;
Fig. 4 is the schematic diagram of the fillet structure at fuse carrier two ends in the protective tube of the present invention.
Embodiment
The present invention will be described in detail referring to drawings and Examples.
Fig. 2 is the cutaway view of protective tube of the present invention; Fig. 3 is the both ends of the surface of fuse carrier in the protective tube of the present invention and the partial sectional view of its outer wall joint portion; Fig. 4 is the schematic diagram of the fillet structure at fuse carrier two ends in the protective tube of the present invention.
Extremely shown in Figure 4 such as Fig. 2, protective tube 1 of the present invention, comprise: fuse 2, consist of the main body of protective tube, fuse when the electric current that flows through fuse is excessive is because the thermal effect of electric current produces high heat, so the fusing of fuse high temperature, thereby cuts off the electric current that flows through protective tube, the position formation that protective tube is connected in the circuit is opened circuit, thereby other electrical appliances that connect in the protective circuit are not punctured by excessive electric current; Fuse carrier 3 is made of the insulation material, is set to the tubular structure of hollow, and fuse passes the space of fuse carrier inside, and the fuse carrier plays the effect of protection fuse, avoids the direct contact of fuse and external object or origination point to be connected; Fuse contact jaw 4, be arranged on the two ends of fuse carrier, the two ends of fuse carrier are blocked, consisted of by metal material, two fuse contact jaws 4 form circuit communication with the two ends of above-mentioned fuse respectively, electric current is directed at fuse 2 by fuse contact jaw 4, the two ends that pass and be exposed at the fuse 2 of fuse carrier outside outward bend along the outer wall of fuse carrier 3 respectively, fuse carrier 3 is inserted in the fuse contact jaw 4 and crimping is fixed, and the space between fuse contact jaw 4 inwalls and fuse carrier 3 outer walls is less than the diameter of fuse 2, fuse 2 deformation under the extruding of fuse contact jaw 4 and fuse carrier 3, direct close contact between fuse 2 and the fuse contact jaw 4 makes between fuse and the fuse contact jaw and can directly form electrical connection when energising.
Be inserted into the length of fuse carrier 3 counterparts of fuse contact jaw 4 inside greater than the length of fuse 2 counterparts of being close to fuse carrier outer wall bending, the fuse two ends of protective tube can be covered by the fuse contact jaw, thereby preventing that fuse from exposing from fuse contact jaw side to form with the outside contact.
Filling bonding agent 7 between fuse carrier 3 and the fuse contact jaw 4 makes to be connected and fixed more firmly between fuse carrier and the fuse contact jaw, prevents that the fuse carrier from deviating from easily from the fuse contact jaw, thereby causes the protective tube fault.
The both ends of the surface 9 of the fuse carrier 3 of tubulose and the binding site between its outer wall 8 are set to fillet structure 5, make fuse when fuse carrier outer wall direction bends, be close to the both ends of the surface of fuse carrier and the outer wall of fuse carrier in above-mentioned this position, prevent that simultaneously fuse from being cut off by the fuse carrier, improves the qualification rate of product when assembling.
The radius of corner of the fillet structure 5 that arranges on the fuse carrier 3 greater than fuse support tube wall thickness 1/3rd and less than 1/2nd of pipe thickness, to guarantee that fuse and fuse carrier have contacting of filling part in the both ends of the surface of fuse carrier, prevented thin fuse carrier both ends of the surface position with fuse cut, radius that can fillet in the example example is set to 5/12 of pipe thickness.
The part that fuse carrier 3 two ends arrange fillet structure 5 respectively accounts for 1/3 of corresponding fuse carrier 3 end face circumference, and the fillet structure at two ends is symmetrical with respect to the axis of fuse carrier, and fuse is at the fillet structure correspondence position outward at fuse carrier two ends.
For fuse carrier and fuse contact jaw are closely cooperated mutually, inwall that can the fuse contact jaw and the binding site of inner bottom surface are set to fillet structure.
Pass the two ends of fuse 2 of fuse carrier along the opposite direction of fuse carrier outer wall bending, fuse fully trailed in the fuse carrier, also be fuse in the assembling process of protective tube stressed evenly, prevent that local pressure from too concentrating and being cut off.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention with preferred embodiment openly as above, yet, be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, certainly can utilize the technology contents of announcement to make a little change or modification, become the equivalent embodiment of equivalent variations, be the content that does not break away from technical solution of the present invention in every case, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all belong in the scope of technical solution of the present invention.
Claims (8)
1. protective tube comprises: fuse, consist of the main body of protective tube, and cut off the electric current that flows through protective tube during high temperature fusing; The fuse carrier is made of the insulation material, is set to the tubular structure of hollow, and fuse passes the space of fuse carrier inside; The fuse contact jaw, be arranged on the two ends of fuse carrier, consisted of by metal material, two fuse contact jaws form circuit communication with the two ends of above-mentioned fuse respectively, it is characterized in that: the two ends that pass and be exposed at the fuse of fuse carrier outside outward bend along the outer wall of fuse carrier respectively, the fuse carrier is inserted in the fuse contact jaw and crimping is fixed, and the space between fuse contact jaw inwall and the fuse carrier outer wall is less than the diameter of fuse, fuse deformation under the extruding of fuse contact jaw and fuse carrier, direct close contact between fuse and the fuse contact jaw.
2. protective tube according to claim 1 is characterized in that: be inserted into the length of fuse carrier counterpart of fuse contact jaw inside greater than the length of the fuse counterpart of being close to the bending of fuse carrier outer wall.
3. protective tube according to claim 1 and 2 is characterized in that: filling bonding agent between fuse carrier and the fuse contact jaw.
4. protective tube according to claim 3, it is characterized in that: the both ends of the surface of the fuse carrier of tubulose and the binding site between its outer wall are set to fillet structure.
5. protective tube according to claim 4 is characterized in that: the radius of corner of the fillet structure that arranges on the above-mentioned fuse carrier greater than fuse support tube wall thickness 1/3rd and less than 1/2nd of pipe thickness.
6. protective tube according to claim 5, it is characterized in that: the part that fuse carrier two ends arrange fillet structure respectively accounts for the 1/4-1/2 of corresponding fuse carrier end face circumference, the fillet structure at two ends is symmetrical with respect to the axis of fuse carrier, and fuse is in the fillet structure correspondence position bending at fuse carrier two ends.
7. protective tube according to claim 5, it is characterized in that: the inwall of fuse contact jaw and the binding site of inner bottom surface are set to fillet structure.
8. protective tube according to claim 1 is characterized in that: pass the two ends of fuse of fuse carrier along the opposite direction of fuse carrier outer wall bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102021545A CN102891052A (en) | 2011-07-19 | 2011-07-19 | Protective tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102021545A CN102891052A (en) | 2011-07-19 | 2011-07-19 | Protective tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102891052A true CN102891052A (en) | 2013-01-23 |
Family
ID=47534521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102021545A Pending CN102891052A (en) | 2011-07-19 | 2011-07-19 | Protective tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102891052A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4540969A (en) * | 1983-08-23 | 1985-09-10 | Hughes Aircraft Company | Surface-metalized, bonded fuse with mechanically-stabilized end caps |
| CN1530994A (en) * | 2003-03-04 | 2004-09-22 | 维克曼工厂有限公司 | Fuse device with inner contemperary seal |
| CN201435364Y (en) * | 2009-07-03 | 2010-03-31 | 杨光 | Micro-fuse |
| CN201717219U (en) * | 2010-06-09 | 2011-01-19 | 深圳市全盛德电子有限公司 | High-breaking ultra-small porcelain tube fuse |
| CN202178226U (en) * | 2011-07-19 | 2012-03-28 | 天津市双赢电子有限公司 | Protective tube |
-
2011
- 2011-07-19 CN CN2011102021545A patent/CN102891052A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4540969A (en) * | 1983-08-23 | 1985-09-10 | Hughes Aircraft Company | Surface-metalized, bonded fuse with mechanically-stabilized end caps |
| CN1530994A (en) * | 2003-03-04 | 2004-09-22 | 维克曼工厂有限公司 | Fuse device with inner contemperary seal |
| CN201435364Y (en) * | 2009-07-03 | 2010-03-31 | 杨光 | Micro-fuse |
| CN201717219U (en) * | 2010-06-09 | 2011-01-19 | 深圳市全盛德电子有限公司 | High-breaking ultra-small porcelain tube fuse |
| CN202178226U (en) * | 2011-07-19 | 2012-03-28 | 天津市双赢电子有限公司 | Protective tube |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130123 |