CN105514736A - Flat cable and manufacturing method thereof - Google Patents
Flat cable and manufacturing method thereof Download PDFInfo
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- CN105514736A CN105514736A CN201410488724.5A CN201410488724A CN105514736A CN 105514736 A CN105514736 A CN 105514736A CN 201410488724 A CN201410488724 A CN 201410488724A CN 105514736 A CN105514736 A CN 105514736A
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- wire harness
- flat
- electric connector
- flat wire
- flat cable
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Abstract
The invention discloses a flat cable and a manufacturing method thereof. The flat cable provided by the invention comprises a flat wire harness, electrical connectors and a support. The flat wire harness includes at least two conductor bundles which are bundled linearly, the conductor bundles are coated with a polytetrafluoroethylene film, and the outer surface of the flat wire harness is wrapped with a glass fiber casing. The durability of the cable is improved.
Description
Technical field
The present invention relates to space product field of cable technology, specifically a kind of flat cable Manufacturing Techniques, to meet the requirement of the miniaturization of Aerospace Products external cable, high reliability.
Background technology
Along with developing rapidly of space flight and aviation technology, the performance of product obtains and improves greatly, and external cable is laid in product surface, and its size directly affects the pneumatic Appearanceindex of product, and aerodynamic configuration index directly affects the flying quality of product.And the signal of Transmission is various, containing power supply signal, high-frequency signal, low frequency signal, size of current is different, and therefore the line style kind of cable is many, and external cable need have the requirements such as high temperature resistant, high reliability.Owing to requiring complexity, in the past made cable is thick and stiff, can immunity poor, repeatedly need bend at cable installation process, pull, after repeatedly using, there will be that twisting strain rolled over by cable, conductor shield pokes the problems such as heart yearn.
Summary of the invention
The problem that the present invention solves is that existing cable for aerospace requires complexity, cable is thick and stiff, can immunity poor, not easily lay; For solving described problem, the invention provides a kind of flat cable and preparation method thereof.
Flat cable provided by the invention, comprising: flat wire harness, electric connector and support; Described flat wire harness comprises: at least 2 strands of bundle conductors, according to the colligation of " one " type between described bundle conductor; Described bundle conductor polytetrafluoroethylene film carries out coated; Flat wire harness outer surface glass fibre sleeve wraps up.
Further, screen one group of boxing between two of the intrafascicular shielded conductor of flat wire together, and is welded on the primary shield of flat wire harness by lead-in wire dislocation, and described primary shield is placed in the encapsulating chamber of electric connector.
Further, flat wire harness two ends respectively connect an electric connector, and described electric connector afterbody installs metal caul, and flat wire harness 2 end is laid on 2 metal cauls respectively.
Further, electric connector fixed by described support.
The manufacture method of flat cable provided by the invention, comprising:
Step one, wire is distributed into the bundle conductor of some strands of similar diameters;
Step 2, described bundle conductor polytetrafluoroethylene film is carried out coated after, by each bundle conductor according to the colligation of " one " font, form flat wire harness; Flat wire harness outer surface glass fibre sleeve wraps up;
Step 3, by the one group of boxing between two of the screen of intrafascicular for flat wire shielded conductor together, and be welded on the primary shield of flat wire harness by lead-in wire dislocation, described primary shield is placed in the encapsulating chamber of electric connector;
Step 4, by electric connector afterbody install metal caul, flat wire harness two ends are respectively laid on the metal caul of an electric connector, and fix with clip and screw.
Further, also comprise, after step 4, adopt polysulfide sealant to carry out embedding process to electric connector.
Further, the method that described embedding process takes layering encapsulating to solidify, in encapsulation cavity, be coated with one deck insulating cement before embedding, embedding is carried out at twice, first pours in syringe by glue, re-use syringe and inject glue in embedding clamp, flat cable is put into electric drying oven with forced convection bake, baking temperature: 50 ± 2 DEG C, bake the time: 48 hours, room temperature is cool puts: 24 hours, and colloid is solidified completely.
Further, wire is fixed on and is about 1mm position lower than chassis plane by first time embedding, and support encapsulation cavity is filled by second time embedding, and encapsulating height is concordant with chassis plane.
Advantage of the present invention comprises:
Flat cable provided by the invention can immunity good, buckle resistance is strong, avoids the situation of internal stress skewness.The process that cable screening wire receives head and cable two ends electric connector bracket at tail part can avoid flat cable when by external force, and displacement or short circuit appear in the wire solder joint in the encapsulation cavity of electric connector termination, transit point.The cable produced can meet that space product function is many, operating mode is harsh, the high complicated requirement of reliability.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of the flat cable that the embodiment of the present invention provides;
Fig. 2 is the flat cable colligation schematic diagram that the embodiment of the present invention provides;
Fig. 3 is the flat cable profile that the embodiment of the present invention provides;
Fig. 4 is the process schematic diagram of the shielded conductor receipts head of the flat cable that the embodiment of the present invention provides;
Fig. 5 is the support of the flat cable that the embodiment of the present invention provides and receives head place schematic diagram.
Embodiment
From background technology, existing cable can immunity poor, easily damage; Inventor is from many-sided, different angles analyses such as applying working conditions, the reason that preliminary judgement cable deforms is, cable inevitably produces the bending under various normal condition in process of manufacture, various bending impels again unbalance stress, degree of tightness between each core to differ, cause the insulated wire cores of finished cable to there is internal stress situation pockety, wire is bent into repeatedly " Z " or " Ω " type, conductor shield of scurrying out, galled by other screens, form short circuit.Due to cable produce stretch or compression be in time or bending number of times progressively produce, distortion progressively accumulate.Therefore the extent of injury bending generation should not control, and the opportunity producing short circuit should not be grasped.
The classification colligation of flat wire harness: on the basis meeting cable actual functional capability, performance, by all kinds of wire (shielded conductor, twisted-pair wire and wire), according to number of conductors and sectional area of wire, wire uniform distribution is become the bundle conductor of some strands of similar diameters, the outer polytetrafluoroethylene film 10 (temperature range :-195 DEG C ~+250 DEG C) of all using of per share bundle conductor 8 adopts half lap method to carry out looping, lay good basis for flat cable is shaped, bundle conductor two respectively stays the surplus of about 100mm without looping.
The manufacture method of flat woven: adopt interval reasonably " a word seat weave " fixing per share bundle conductor 8, specifically per share bundle conductor 8 is numbered and arranges in turn, with the NOMEX-4M binding wire 7 of several about 100mm, carry out colligation process according to " one " font, colligation spacing: 50mm.Flat wire harness colligation is even, and colligation is received 6 place and mutually staggered, and namely a binding wire 7 receives head in wire harness top, and adjacent binding wire 7 just receives head below at wire harness.Carry out colligation at support tail end to whole flat wire harness, colligation spacing is 10mm.Flat wire harness outer surface glass fibre sleeve 9 wraps up, and cable more easily being bent when laying and use, repeatedly launching.
The processing method of head received by shielded conductor: produce improper conducting for preventing support and screen, need to guarantee effectively to insulate between electric connector support and screen before the assembling of electric connector support, take to carry out the process of bottoming glue to support, polysulfide sealant used for embedding is evenly coated on rack inner wall surface, thickness is about 0.5mm, can carry out subsequent operation after sizing material solidifies completely.As the screen 12 of shielded conductor the longest in wire harness 1 is not pruned by Fig. 4; two screens 12 of shorting stub 14 and same group to use shorting stub 14 with together with the dislocation boxing of the interval of 3 ~ 5mm with silver-plated circular copper wire by all the other; solder joint puts heat-shrinkable T bush 15 and protects, and by heat-shrinkable T bush 15 pyrocondensation.Often the screen 12 handled well of group with lead-in wire 16 according on the screen the longest in wire harness 1 of the spacing boxing of 50mm.All the other beam shield layers 12 process equally, need not stay primary shield 13, are directly welded on the primary shield of wire harness 1, put into encapsulating chamber after all screen process.This processing method had both effectively reduced screen and the volume of joint in encapsulating chamber, can avoid again shielding conductor in encapsulating chamber with other Metal Contact and short circuit problem.
The two ends electric connector bracket at tail part processing method of flat cable: cable two ends electric connector 4 afterbody installs metal caul 5, flat wire harness is laid on backing plate 5, and fix with clip 3 and screw 2, clip quantity is 3, receipts head middle clip place within metal caul of sheath, ensures to have at least place's wire harness colligation place to be positioned at backing plate, glass fibre sleeve 9 varus is about 30mm, sleeve pipe termination is pushed into electric connector 4 and metal caul 5 junction, makes glass fibre sleeve 9 just cover backing plate 5.Sheath threading colligation: first choose an osculum with tweezers on glass fibre sleeve 9 limit, by high temperature binding wire 11 through osculum, one colligation divides 3 sections by the colligation together with sleeve pipe of flat wire harness.Binding wire 11 receives head in wire harness side, and staggered receipts head, colligation spacing is 300mm.The fixed form of support is that the profile of flat cable plays positioning action, makes cable more not easily torsional deformation, thus improves the reliability that external cable uses.Electric connector 4 polysulfide sealant carries out embedding process, all wires in encapsulating chamber, and the distribution of joint is all dispersion and layering.The method that embedding takes layering encapsulating to solidify, in encapsulation cavity, one deck insulating cement is coated with before embedding, embedding is carried out at twice, first glue is poured in syringe, then use syringe slowly to inject glue in embedding clamp, flat cable is put into electric drying oven with forced convection and bakes, baking temperature: 50 ± 2 DEG C, bake the time: 48 hours, room temperature is cool puts: 24 hours, and colloid is solidified completely.Wire is fixed on and is about 1mm position lower than connector holder plane by first time embedding, and support encapsulation cavity is filled by second time embedding, and encapsulating height is concordant with chassis plane.This measure can ensure that the crimping point of electric connector 4 and shielding are received head solder joint and can not be damaged to some extent due to the external force of external cable when mounting and installation, can completely isolated cable when by external force, there is displacement or short circuit in the wire solder joint in encapsulation cavity, transit point.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection range of technical solution of the present invention.
Claims (8)
1. a flat cable, comprising: flat wire harness, electric connector and support, is characterized in that, described flat wire harness comprises: at least 2 strands of bundle conductors, according to the colligation of " one " type between described bundle conductor; Described bundle conductor polytetrafluoroethylene film carries out coated; Flat wire harness outer surface glass fibre sleeve wraps up.
2. according to flat cable according to claim 1, it is characterized in that, screen one group of boxing between two of the intrafascicular shielded conductor of flat wire together, and is welded on the primary shield of flat wire harness by lead-in wire dislocation, and described primary shield is placed in the encapsulating chamber of electric connector.
3. according to flat cable according to claim 1, it is characterized in that, flat wire harness two ends respectively connect an electric connector, and described electric connector afterbody installs metal caul, and flat wire harness 2 end is laid on 2 metal cauls respectively.
4. according to flat cable according to claim 1, it is characterized in that, electric connector fixed by described support.
5. the manufacture method of the flat cable that any one provides in Claims 1-4, is characterized in that, comprising:
Step one, wire is distributed into the bundle conductor of some strands of similar diameters;
Step 2, described bundle conductor polytetrafluoroethylene film is carried out coated after, by each bundle conductor according to the colligation of " one " font, form flat wire harness; Flat wire harness outer surface glass fibre sleeve wraps up;
Step 3, by the one group of boxing between two of the screen of intrafascicular for flat wire shielded conductor together, and be welded on the primary shield of flat wire harness by lead-in wire dislocation, described primary shield is placed in the encapsulating chamber of electric connector;
Step 4, by electric connector afterbody install metal caul, flat wire harness two ends are respectively laid on the metal caul of an electric connector, and fix with clip and screw.
6. according to the manufacture method of flat cable according to claim 5, it is characterized in that, also comprise: after step 4, adopt polysulfide sealant to carry out embedding process to electric connector.
7. according to the manufacture method of flat cable according to claim 6, it is characterized in that, the method that described embedding process takes layering encapsulating to solidify, before embedding, in encapsulation cavity, be coated with one deck insulating cement, embedding is carried out at twice, first glue is poured in syringe, re-use syringe and inject glue in embedding clamp, flat cable is put into electric drying oven with forced convection and bakes, baking temperature: 50 ± 2 DEG C, bake the time: 48 hours, room temperature is cool puts: 24 hours, and colloid is solidified completely.
8. according to the manufacture method of flat cable according to claim 7, it is characterized in that, wire is fixed on and is about 1mm position lower than chassis plane by first time embedding, and support encapsulation cavity is filled by second time embedding, and encapsulating height is concordant with chassis plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488724.5A CN105514736B (en) | 2014-09-23 | 2014-09-23 | A kind of flat cable and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488724.5A CN105514736B (en) | 2014-09-23 | 2014-09-23 | A kind of flat cable and preparation method thereof |
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| CN105514736A true CN105514736A (en) | 2016-04-20 |
| CN105514736B CN105514736B (en) | 2018-05-18 |
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| CN201410488724.5A Active CN105514736B (en) | 2014-09-23 | 2014-09-23 | A kind of flat cable and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320864A (en) * | 2017-12-11 | 2018-07-24 | 芜湖航天特种电缆厂股份有限公司 | Airborne equipment wire harness assembly and its production technology |
| CN108963704A (en) * | 2018-06-22 | 2018-12-07 | 北京航天光华电子技术有限公司 | Carrier rocket cable network on-board method for waterproofing |
| CN109066532A (en) * | 2018-08-08 | 2018-12-21 | 苏州华旃航天电器有限公司 | A kind of harness boundary surface seal structure cable assemblies and installation method |
| CN110634605A (en) * | 2019-08-22 | 2019-12-31 | 曹巍 | Polyethylene insulated steel-ethylene bonding sheath thin steel wire armored communication cable |
| CN111224267A (en) * | 2020-01-09 | 2020-06-02 | 环胜电子(深圳)有限公司 | Flexible flat cable |
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| US20130058069A1 (en) * | 2011-09-06 | 2013-03-07 | Hitachi Cable Fine-Tech, Ltd. | Flat cable and cable harness using the same |
| CN203118538U (en) * | 2013-01-25 | 2013-08-07 | 安徽吉安特种线缆制造有限公司 | Composite anti-splash flat cable with high temperature shielding function used for iron and steel plants |
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| US3582537A (en) * | 1969-11-26 | 1971-06-01 | Haveg Industries Inc | Woven cable with bonded woven lattice structure |
| CN2487897Y (en) * | 2001-05-18 | 2002-04-24 | 上海耀达电器有限公司 | Plastics cross flow wind wheel |
| US20100289610A1 (en) * | 2009-05-12 | 2010-11-18 | Jacobson Boris S | Planar magnetic structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320864A (en) * | 2017-12-11 | 2018-07-24 | 芜湖航天特种电缆厂股份有限公司 | Airborne equipment wire harness assembly and its production technology |
| CN108963704A (en) * | 2018-06-22 | 2018-12-07 | 北京航天光华电子技术有限公司 | Carrier rocket cable network on-board method for waterproofing |
| CN108963704B (en) * | 2018-06-22 | 2021-10-01 | 北京航天光华电子技术有限公司 | Waterproof treatment method for cable network on carrier rocket |
| CN109066532A (en) * | 2018-08-08 | 2018-12-21 | 苏州华旃航天电器有限公司 | A kind of harness boundary surface seal structure cable assemblies and installation method |
| CN110634605A (en) * | 2019-08-22 | 2019-12-31 | 曹巍 | Polyethylene insulated steel-ethylene bonding sheath thin steel wire armored communication cable |
| CN111224267A (en) * | 2020-01-09 | 2020-06-02 | 环胜电子(深圳)有限公司 | Flexible flat cable |
| CN111224267B (en) * | 2020-01-09 | 2021-08-20 | 环荣电子(惠州)有限公司 | Flexible flat cable |
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| Publication number | Publication date |
|---|---|
| CN105514736B (en) | 2018-05-18 |
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