CN103072539A - Automotive seat cushion - Google Patents
Automotive seat cushion Download PDFInfo
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- CN103072539A CN103072539A CN2013100218492A CN201310021849A CN103072539A CN 103072539 A CN103072539 A CN 103072539A CN 2013100218492 A CN2013100218492 A CN 2013100218492A CN 201310021849 A CN201310021849 A CN 201310021849A CN 103072539 A CN103072539 A CN 103072539A
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- seat cushions
- film layers
- pressure sensor
- plastic film
- thin film
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Abstract
The invention discloses an automotive seat cushion, which comprises a pressure sensor arranged on the upper surface or the lower surface of a foam seat cushion. Trapezoidal through holes are formed in the foam seat cushion. Technical key points are that the pressure sensor comprises opposite plastic thin film layers; an aluminum foil layer conductive circuit and a carbon paste conductive circuit are sequentially printed on each plastic thin film layer; the plastic thin film layers with the printed circuits are adhered through an intermediate layer; an intermediate layer passage is formed in the intermediate layer; and plastic thin film layer through holes are formed in the plastic thin film layers opposite to the intermediate layer passage. The automotive seat cushion has the advantages that printed circuit boards are replaced by conductive circuits consisting of aluminum foil layers and carbon paste layers, so that a production process is simplified; the price of an aluminum foil is far lower than that of silver paste, so that the production cost is lowered; and the pressure sensor adopting the aluminum foil is long in service life and high in toughness, and even though the pressure sensor is carelessly bent, a sensing signal cannot be abnormally changed by change of a resistance value.
Description
Technical field
The present invention relates to a kind of seat cushions, is used for judging occupant or object situation on the identification seat cushions, reminds the occupant to fasten the seat cushion safety strap.
Background technology
Along with the vehicle safety rules are further perfect, measure has also proposed new judgment criteria to Chinese new car assessment routine (C-NCAP) to the new car passenger protection at present, takes actv. safety strap safety method for reminding the occupant, and adopts seat belt reminder systems.Existing system mostly is pressure sensitive and optical sensor, wherein the production of pressure sensor is generally: with the two layers of plastic thin films layer, successively the printed silver slurry is starched layer with carbon respectively, then will be bonded together by the colloidal substance such as pressure sensitive adhesive double coated with two plastic film layers of printed wire, the conducting channel of making is as the pressure sensor signal output unit.
But, but it has following shortcoming: complex manufacturing, and cost is high, not easy-maintaining; Service life is short, along with using its sensitieness to weaken gradually; Poor toughness, deformation is excessive fragile.Just need a kind of low production cost this moment, long service life, highly sensitive, the strong non-damageable seat cushions that pressure sensor is set of toughness.
Summary of the invention
The invention provides the seat cushions that a kind of foam seat cushions upper surface arranges pressure sensor, complicated to solve in the prior art seat cushions production technology of pressure sensor, cost is high, easy-maintaining not, the problem such as service life is short.
The object of the present invention is achieved like this: it comprises the pressure sensor that is arranged on foam seat cushions upper surface or lower surface, the ladder type through hole is set in the described foam seat cushions, it is characterized in that: described pressure sensor comprises the corresponding plastic film layers that arranges, on plastic film layers, print successively aluminium foil layer conducting channel, carbon slurry layer conducting channel, the plastic film layers that is printed on printed wire is bonded together by interlayer, the interlayer passage is set in the described interlayer, on the plastic film layers relative with the interlayer passage plastic film layers through hole is set.
Aluminium foil layer conducting channel in the technique scheme prepares by aluminum corrosion method; described aluminum corrosion method comprises the steps: at an amount of protection liquid of aluminium foil layer conducting wire printing; then after aluminium foil layer conducting channel surface is with coating corrosive liquid corrosion 1-10min, wash protection liquid off with alkali lye again.
The thickness of the aluminium thin layer in the technique scheme is 3 ~ 30 μ m.
In the technique scheme corrosive liquid be hydrochloric acid.
Concentration of hydrochloric acid in the technique scheme is 25 ~ 30wt%.
Protection liquid in the technique scheme is Animal Bone colloid extract.
Compared with prior art, the present invention has the following advantages: after printed circuit board (PCB) being changed into the conducting channel of aluminium foil layer of the present invention and carbon slurry layer composition, simplified production technology; The aluminium foil price is starched far below silver, has reduced productive costs; Adopt the pressure sensor long service life of aluminium foil, good toughness is even because accidentally bending can not change resistance value yet, cause the ANOMALOUS VARIATIONS of transducing signal.
Description of drawings:
Fig. 1 is the structural representation figure of pressure sensor;
Fig. 2 is the schematic diagram in top down perspective of pressure sensor;
Fig. 3 is A-A section view during pressurized not of Fig. 2;
View when Fig. 4 is the A-A section pressurized of Fig. 2;
Fig. 5 is the foam seat cushions scheme drawing with pressure sensor.
Accompanying drawing main portion nomenclature:
11. plastic film layers; 12. plastic film layers through hole; 13. interlayer; 14. interlayer passage; 15. aluminium foil layer conducting channel; 16. carbon slurry layer conducting channel; 17. interlayer through hole; 18. plastic cement sealing block; 21. foam seat cushions upper surface; 22. foam seat cushions lower surface; 23. foam seat cushions; 24. ladder type through hole; 25. sensor clamping band; 26 plastic cement sealing blocks; 27. pressure sensor.
The present invention is described in further detail by example below in conjunction with accompanying drawing, but following example only is the present invention's example wherein that do not represent the rights protection scope that the present invention limits, the scope of the present invention is as the criterion with claims.
The specific embodiment
Embodiment 1
With reference to figure 1, Fig. 3 and a kind of seat cushions shown in Figure 5, at foam seat cushions upper surface 21, ladder type through hole 24 is set in the described foam seat cushions, pressure sensor comprises the corresponding plastic film layers 11 that arranges, on plastic film layers 11, print successively aluminium foil layer conducting channel 15, carbon slurry layer conducting channel 16, the plastic film layers 11 that is printed on printed wire is bonded together forming composite structure by the interlayer 13 with cohesive material.Interlayer passage 14 is set in the interlayer 13, on the plastic film layers 11 relative with interlayer passage 14 plastic film layers through hole 12 is set.As shown in Figure 2, terminal plastic cement sealing block 18, the plastic cement sealing block 18 interior pressure signal pre processing circuit plates that arrange of connecting of described composite structure; Plastic cement sealing block 18 other ends are connected with connector, and connector links to each other with the vehicle harness assembly.Tape and directly be bonded on the foam seat cushions upper surface 21 in these sensor 27 bottom surfaces, pass trapezoidal hole 24 by sensor clamping band 25, be fixed on foam cushion upper surface 21, and link to each other with the bundle assembly of vehicle control presssure sensor and automobile seat heating cushion by the sensor wire harness.
Above-mentioned pressure sensor prepares by following method: at first print thickness is about the aluminium thin layer conducting channel of 25 μ m on plastic film layers, then behind an amount of Animal Bone colloid extract of aluminium thin layer conducting channel printing, at whole aluminium foil layer coating 27wt% hydrochloric acid, corrode after 5-8 minute, with the NaOH flushing of 40wt%.After the drying, print carbon slurry layer thereon, then by will being bonded together with the plastic film layers of printed wire with interlayer passage interlayer.
Adopting concentration is that the hydrochloric acid of 25 ~ 30wt% can reach higher corrosion efficient, strictly controls etching time in 1 ~ 10min, avoided because of etching time long, and corrosive aluminum foil layer conducting channel.Adopt commercially available Animal Bone colloid extract, it is acidproof not alkaline-resisting, can well play protective circuit not by acid liquid corrosion.
As shown in Figure 4, when human body is seated on the pressure sensor, aluminium foil layer conducting channel and the carbon slurry layer conducting channel of both sides are compressed to the middle part, air in the interlayer through hole 17 is discharged by interlayer passage 14 and plastic film layers through hole 12, both sides carbon slurry layer is in contact with one another, consist of the galvanic circle, and produce certain resistance value.This moment, electric signal passed to the vehicle harness assembly by the conducting channel in the interlayer passage 14, and fed back to the occupant by other devices, and reminiscences is fastened seat belts.
Described pressure sensor also can be arranged on foam seat cushions lower surface 22, and figure slightly.
Claims (6)
1. seat cushions, it comprises the pressure sensor that is arranged on foam seat cushions upper surface or lower surface, the ladder type through hole is set in the described foam seat cushions, it is characterized in that: described pressure sensor comprises the corresponding plastic film layers that arranges, on plastic film layers, print successively aluminium foil layer conducting channel, carbon slurry layer conducting channel, the plastic film layers that is printed on printed wire is bonded together by interlayer, the interlayer passage is set in the described interlayer, on the plastic film layers relative with the interlayer passage plastic film layers through hole is set.
2. seat cushions according to claim 1; it is characterized in that: described aluminium foil layer conducting channel prepares by aluminum corrosion method; described aluminum corrosion method comprises the steps: at an amount of protection liquid of aluminium foil layer conducting wire printing; then after aluminium foil layer conducting channel surface is with coating corrosive liquid corrosion 1-10min, wash protection liquid off with alkali lye again.
3. seat cushions according to claim 2, the thickness of described aluminium thin layer is 3 ~ 30 μ m.
4. seat cushions according to claim 2, it is characterized in that: described corrosive liquid is hydrochloric acid.
5. seat cushions according to claim 4, it is characterized in that: described concentration of hydrochloric acid is 25 ~ 30wt%.
6. seat cushions according to claim 2, it is characterized in that: described protection liquid is Animal Bone colloid extract.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100218492A CN103072539A (en) | 2012-09-07 | 2013-01-22 | Automotive seat cushion |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210329037.X | 2012-09-07 | ||
| CN201210329037 | 2012-09-07 | ||
| CN2013100218492A CN103072539A (en) | 2012-09-07 | 2013-01-22 | Automotive seat cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103072539A true CN103072539A (en) | 2013-05-01 |
Family
ID=48149298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100218492A Pending CN103072539A (en) | 2012-09-07 | 2013-01-22 | Automotive seat cushion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103072539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108396A (en) * | 2019-06-05 | 2019-08-09 | 辽宁尚泽电子科技有限公司 | A kind of diaphragm pressure sensor and its manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3315200A (en) * | 1963-11-20 | 1967-04-18 | British Aircraft Corp Ltd | Strain gauges |
| CN1119993A (en) * | 1994-09-12 | 1996-04-10 | 北京科技大学 | Making method of stainless steel pringting pattern |
| JPH11304752A (en) * | 1998-04-24 | 1999-11-05 | Tokyo Gas Co Ltd | Carbon monoxide sensor and its aging method |
| CN101439701A (en) * | 2008-12-31 | 2009-05-27 | 长春夸克普精汽车电子有限责任公司 | Contact type broken circuit and short circuit two-state automobile passenger sensing method and sensor |
| CN102085815A (en) * | 2009-12-04 | 2011-06-08 | 爱信精机株式会社 | Seat occupancy detection device |
| CN203005345U (en) * | 2012-09-07 | 2013-06-19 | 华晨汽车集团控股有限公司 | An automobile seat cushion |
-
2013
- 2013-01-22 CN CN2013100218492A patent/CN103072539A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3315200A (en) * | 1963-11-20 | 1967-04-18 | British Aircraft Corp Ltd | Strain gauges |
| CN1119993A (en) * | 1994-09-12 | 1996-04-10 | 北京科技大学 | Making method of stainless steel pringting pattern |
| JPH11304752A (en) * | 1998-04-24 | 1999-11-05 | Tokyo Gas Co Ltd | Carbon monoxide sensor and its aging method |
| CN101439701A (en) * | 2008-12-31 | 2009-05-27 | 长春夸克普精汽车电子有限责任公司 | Contact type broken circuit and short circuit two-state automobile passenger sensing method and sensor |
| CN102085815A (en) * | 2009-12-04 | 2011-06-08 | 爱信精机株式会社 | Seat occupancy detection device |
| CN203005345U (en) * | 2012-09-07 | 2013-06-19 | 华晨汽车集团控股有限公司 | An automobile seat cushion |
Non-Patent Citations (1)
| Title |
|---|
| 刘仁志: "铝箔在柔性印制线路板中的应用", 《电镀与精饰》, vol. 30, no. 10, 31 October 2008 (2008-10-31), pages 22 - 24 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108396A (en) * | 2019-06-05 | 2019-08-09 | 辽宁尚泽电子科技有限公司 | A kind of diaphragm pressure sensor and its manufacturing method |
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| 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: 20130501 |