CN205039099U - Fabric keyboard switch of non -contact conducting layer - Google Patents
Fabric keyboard switch of non -contact conducting layer Download PDFInfo
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- CN205039099U CN205039099U CN201520714929.0U CN201520714929U CN205039099U CN 205039099 U CN205039099 U CN 205039099U CN 201520714929 U CN201520714929 U CN 201520714929U CN 205039099 U CN205039099 U CN 205039099U
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Abstract
The utility model provides a fabric keyboard switch of non -contact conducting layer, first conducting layer and second conducting layer are non -contact, need not the insulating layer that design of cost time and structural belt have the hole part, have avoided upper and lower conducting layer yarn to pass through the large deformation that the hole partial contact takes place, big displacement simultaneously to and the yarn that from this brings not stability problem of switch such as slide, first conducting layer and second conducting layer need not direct contact can realize location of the key discernment, and the use is firmly stable, is favorable to the development and the practical application of intelligent fabrics. The utility model discloses a two independent circuit that analytically descend the conducting layer obtain button information, the convenient accurate button position of judging. Fabric keyboard switch of non -contact conducting layer weave the large deformation and big displacement that technology did not require the yarn, weaving technique reliable and simple, with low costs, can realize weaving in succession one shot forming, the industrialization scale production of being convenient for on ordinary loom.
Description
Technical field
The utility model belongs to fabric switch field, especially relates to a kind of fabric keyboard switch of contactless conductive layer.
Background technology
Fabric keyboard switch for field of computer technology has had some bibliographical informations.Such as patent HK1015326 reports a kind of fabric sensor, and the conductive layer of top layer and bottom is separated by the pertusate intermediate insulating layer of band.Again such as, patent 200810152294.4, reports " a kind of flexible fabric keyboard ".This fabric keyboard switch is replace woven support unit and hole cellular construction, described hole unit and keyboard position one_to_one corresponding continuously.The upper strata of hole unit inweave floating long line longer through guiding line, form switching row circuit, the lower floor of hole unit inweaves the longer broadwise wire of floating long line accordingly, forms switch train circuit.The upper and lower conductive layers of these fabric keyboard switches under pressure, contacts conducting by the hole on insulating barrier; After release pressure, upper conductive layer is by elastic recovery, and circuit disconnects.
The technical problem that such keyboard exists is: need on the insulating layer to weave hole part, and upper and lower conductive layers, just by this hole part contact, forms turning circuit.Such principle forming hole part realizes proposing strict requirement to woven technological design and technique.Go up conductive layer needs passing hole cavity portion to contact lower conductiving layer simultaneously, and the distortion that result in conductive layer is larger.
Summary of the invention
In view of this, the utility model is intended to the fabric keyboard switch proposing a kind of contactless conductive layer, needs actual physics contact occurs with the upper and lower conductive layers solving existing fabric keyboard switch, the problem that weaving process distortion that is complicated and conductive yarn is large.
For achieving the above object, the technical solution of the utility model is achieved in that
A fabric keyboard switch for contactless conductive layer,
Comprise some key positions and some non-key positions;
Described non-key position is woven (12,11);
Each described key position includes two-layer fabric, described two-layer fabric comprises the first conductive layer (21) and the second conductive layer (22), the all or part of employing of warp thread of described first conductive layer (21) has the conductive yarn of piezoresistive effect, the first conductive layer (21) being positioned at the key position on same row shares the conductive yarn that a group has piezoresistive effect, forms the column circuits of switch; The all or part of employing of weft yarn of described second conductive layer (22) has the conductive yarn of piezoresistive effect, the second conductive layer (22) being positioned at the key position in same a line shares the conductive yarn that a group has piezoresistive effect, form the row circuit of switch, described first conductive layer (21) and described second conductive layer (22) not access node, be provided with imperforate insulation spacer (31) between described first conductive layer (21) and described second conductive layer (22).
Further, described conductive yarn is be coated with the PFY of carbon nanotube coating or apply the fiber filament of other pressure sensitives.
Further, described insulation spacer (31) be hard foam, electro-insulating rubber or insulating synthetic resin.
Further, described woven (12,11) is plain weave or twill-weave;
Described first conductive layer (21) and the second conductive layer (22) are plain weave or twill-weave.
The utility model also provides a kind of checkout gear of fabric keyboard switch of contactless conductive layer, the two ends of described first conductive layer (21) conductive yarn connect the first electrical signal detection device by end line connector, and the two ends of described second conductive layer (22) conductive yarn connect secondary signal detector by end line connector.The resistance of the first conductive layer (21) described in when pressing keys position and the middle conductive yarn of the second conductive layer (22) can change, and the first electrical signal detection device and secondary signal detector just can detect change in electric.If the signal of telecommunication of certain row there occurs change, can infer it must is that certain position of this row receives pressing; In like manner, if signal of telecommunication of certain row there occurs change simultaneously, can infer it must is that certain positions of this row also receives pressing simultaneously.According to the operation principle of matrix keyboard, can infer that key position must be on the joint of this row and these row, namely achieve the detection of button.
Further, described first electrical signal detection device is oscilloscope or universal instrument, and described secondary signal is detected as oscilloscope or universal instrument.
The weaving process of the fabric keyboard switch of above-mentioned contactless conductive layer, comprises the steps:
1) first woven single fabric (12);
2) after woven (12) has been weaved, then the first conductive layer (21), second conductive layer (22) of woven single fabric (11), key position, first conductive layer (21) and the second conductive layer (22) not access node, fill insulation spacer (31) in the gap that the first conductive layer (21) and the second conductive layer (22) are formed;
3) step 2) weaved after then woven single fabric (12), consolidation is carried out to key position;
4) period of two-layer fabric is adjusted, to adjust the size of button; The period of adjustment woven (12) and woven (11), to adjust the position of button; According to quantity and the status requirement of button, circulation above-mentioned steps 1)-3), until key switch is all weaved complete.
Further, in step 2) in for guarantee weave in the first conductive layer (21) and the second conductive layer (22) separately, when knitting the second conductive layer (22), the warp thread of the first conductive layer (21) needs all to mention, to ensure when weaving the weft yarn of the second conductive layer (22), first conductive layer (21) warp thread lifts, and reaches the first conductive layer (21) and the second conductive layer (22) not access node.
Relative to prior art, fabric keyboard switch and the manufacturing process thereof of contactless conductive layer described in the utility model have following advantage:
(1) the first conductive layer of the fabric keyboard switch of contactless conductive layer described in the utility model and the second conductive layer are contactless, without the need to the insulating barrier of spended time design and structure with hole part, avoid large deformation that the contact of upper and lower conductive layer yarn passing hole cavity portion occurs, Large travel range, and the switch instability problem such as the yarn slip brought thus; First conductive layer and the second conductive layer can realize key mapping identification, use procedure firm stable without the need to directly contacting, and are conducive to development and the practical application of intelligent textile.
(2) in know-why, the utility model obtains key information by two independent circuits analyzing upper and lower conductive layers.The checkout gear of the fabric keyboard switch of contactless conductive layer described in the utility model is convenient accurately judges key position.
(3) weaving process of the fabric keyboard switch of contactless conductive layer described in the utility model does not require large deformation and the Large travel range of yarn, weaving technology is simple, and cost is low, ordinary loom can realize weave continuously, one-shot forming, is convenient to industrial-scale production.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
The structural representation of the fabric keyboard switch of the contactless conductive layer that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the structural representation of a singly-bound in the utility model embodiment;
Fig. 3 is the singly-bound broadwise cross-sectional view of Fig. 2 in the utility model embodiment;
Fig. 4 is the singly-bound fabric structure schematic diagram of the utility model embodiment;
Fig. 5 is the singly-bound key position two-layer fabric structural representation of the utility model embodiment;
Fig. 6 is the structural representation of the first conductive layer;
Fig. 7 is the structural representation of the second conductive layer;
Fig. 8 is the control technology schematic diagram of the utility model fabric keyboard switch.
Description of reference numerals:
1-9-key position, 21-first conductive layer, 22-second conductive layer, 41-shows warp, 42-back weft, 31-insulation spacer, and 11,12-woven.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The utility model provides a kind of fabric keyboard switch of contactless conductive layer, as shown in figures 1-8; Warp-wise is X-direction, and broadwise is Y-direction, and the height of fabric keyboard switch is Z-direction.
As shown in Figure 1, fabric keyboard switch is made up of key position and non-key position, and numeral in Fig. 1 " 1,2 ..., 9 " be key position, other are non-key position.Key position is made up of two-layer fabric, in two-layer fabric the first conductive layer 21 table through 41 and second the back weft 42 of conductive layer 22 form column circuits and the row circuit of switch.Show the warp thread through 41 i.e. the first conductive layers 21, the back weft 42 i.e. weft yarn of the second conductive layer 22, table has the conductive yarn of piezoresistive effect through 41 all or part of employings, the all or part of employing of back weft 42 has the conductive yarn of piezoresistive effect, and conductive yarn is the PFY etc. being coated with carbon nanotube coating.Isolate the first conductive layer 21 and the second conductive layer 22 in the gap of bilayer by hard foam 31, form contactless conductive layer.Non-key position place is woven 11,12, consolidation and stable key position.The table of the first conductive layer 21 through 41 and second the back weft 42 of conductive layer 22 form the upper and lower conductive layers of switch, hard foam 31, as insulating barrier, isolates upper and lower conductive layers all the time.Insulating barrier 31 only serves as the effect of isolation upper and lower conductive layers, does not need reserving hole part.The conducting of this fabric keyboard switch is not the hole part contact of upper and lower conductive layers by insulating barrier, circuit turn-on.When the key position 1-9 of fabric keyboard switch is subject to pressing, the table of the first conductive layer 21 through 41 and second the back weft 42 of conductive layer 22 all or part ofly have employed the conductive yarn with piezoresistive effect, therefore the resistance of conductive yarn can change, be connected first electrical signal detection device and secondary signal detector with the two ends of back weft 42 respectively by end line connector through 41 at table, judged the break-make of switch by the resistance variations monitored.During resistance marked change, be judged as switch conduction; Resistance is unchanged or change is very little, is judged as that switch disconnects.
Fig. 2 is the structural representation of fabric keyboard switch singly-bound, and it comprises the monolayer organization 11 and 12 at non-key position place; First conductive layer 21 of double-layered structure of key position place.
Fig. 3 is the profile of singly-bound along broadwise Y-direction of fabric keyboard switch.It comprises the monolayer organization 11 at non-key position place, the first conductive layer 21 and the second conductive layer 22 of double-layered structure of key position place.Filler between double-layered structure is insulation spacer 31, and in the present embodiment, insulation spacer 31 is imperforate hard foam.
The fabric keyboard switch that the conductive layer of the utility model design is contactless is have the conductive yarn of piezoresistive effect and the flexible fabric of the continuous weaving of insulative yarn; Fabric keyboard switch is made up of key position 1-9 and non-key position, and non-key position is woven, and key position 1-9 is two-layer fabric, the first conductive layer 21 and the second conductive layer 22 not access node, in the gap formed, fill insulation spacer 31.This insulation spacer 31 can isolate first conductive layer 21 and second conductive layer 22 at key position place.First conductive layer 21 at key position 1-9 place adopts monolayer organization, by showing to interweave through 41 and table latitude to be formed, wherein shows the column circuits forming switches through 41; Second conductive layer 22 adopts monolayer organization, and being interweaved by back warp and back weft 42 is formed, and wherein back weft 42 forms the row circuit of switch.Isolated by insulation spacer 31 between first conductive layer 21 of fabric keyboard switch and the second conductive layer 22, do not contact.This insulation spacer 31 is also as the insulating barrier of upper and lower conductive layers, and this insulating barrier does not need to reserve hole part.The warp thread 41 of upper conductive layer and the weft yarn 42 of lower conductiving layer adopt the conductive yarn with piezoresistive effect, all the first electrical signal detection device is connected by end line connector at warp thread 41 two ends, the two ends of weft yarn 42 connect secondary signal detector by end line connector, the resistance variations that first electrical signal detection device and secondary signal detector monitors conductive yarn cause due to distortion, judges break-make and the position of switch by the situation of change of resistance.Therefore the break-make of this kind of fabric keyboard switch does not need the first conductive layer 21 to contact with the actual physics of the second conductive layer 22, needs the isolation by separator or insulating barrier 31.This separator or insulating barrier 31 do not need design hole part, because the first conductive layer 21 does not need passing hole cavity portion to contact with the second conductive layer 22, but judged the resistance variations produced by compressive strain of conductive yarn by the first electrical signal detection device and secondary signal detector, thus judge switch on and off.
Provide specific embodiment of the utility model below, this embodiment is further illustrating technical solutions of the utility model just, do not form the restriction to the utility model claims.
As shown in Figure 4, in the present embodiment, fabric keyboard switch is the Weaving Cycle be made up of the first conductive layer 21 of woven 12,11 and bilayer and the second conductive layer 22.A1, A2, A3, A4, a1, a I, a2, a II, a3, a III, a4, a IV, A5, A6, A7, A8 totally 16 warp thread are had in a Weaving Cycle, A1, A2, A3, A4, A5, A6, A7, A8 are the warp thread of woven 12,11, a1, a I, a2, a II, a3, a III, a4, a IV are the warp thread of double layer plain weave, wherein a1, a2, a3, a4 are the warp thread of the first conductive layer 21 of double layer plain weave, and the table namely in Fig. 1 is through 41.A I, a II, a III, a IV are the warp thread of the second conductive layer 22 of double layer plain weave, and it is 1 table 1 li, i.e. 1:1 that the first conductive layer 21 warp thread and the second conductive layer 22 warp thread are gaited sequentially; B1, B2, B3, B4, b1, b I, b2, b II, b3, b III, b4, b IV, B5, B6, B7, B8 totally 16 weft yarns are had in a Weaving Cycle, B1, B2, B3, B4, B5, B6, B7, B8 are the weft yarns of woven 12,11, adopt plain weave.B1, b I, b2, b II, b3, b III, b4, b IV are the weft yarns of two-layer fabric, adopt plain weave.B1, b2, b3, b4 are the weft yarns of the first conductive layer 21 of two-layer fabric, and b I, b II, b III, b IV are the weft yarns of the second conductive layer 22 of two-layer fabric, the back weft 42 namely in Fig. 1.The order of beating up of the first conductive layer 21 and the second conductive layer 22 is 1 table 1 li, i.e. 1:1.
Design according to weaving process, namely the warp thread of key position place first conductive layer 21 is shown through 41, all or part of employing has the conductive yarn of piezoresistive effect, the weft yarn of the second conductive layer 22 and back weft 42, all or part of employing has the conductive yarn of piezoresistive effect, and other yarn all adopts insulative yarn.In the present embodiment, as shown in Figure 4, warp thread a1, a2, a3, a4 of the first conductive layer 21 can all or part of employing conductive yarns, as column circuits; Weft yarn b I, the b II of the second conductive layer 22, b III, b IV can all or part of employing conductive yarns, as row circuit.Described conductive yarn materials selects the conductive yarn with piezoresistive effect, and as carbon nanotube coating PFY, this kind of conductive yarn can along with the change of pressure, and resistance changes, and is convenient to detect the position of button and the generation of button.
The plain weave of key position place bilayer as shown in Figure 5,8 warp thread are had in a Weaving Cycle, 8 weft yarns, first conductive layer 21 plain weave of double layer plain weave is as Fig. 6, second conductive layer 22 plain weave is as Fig. 7, the Warp Tension Test of the first conductive layer 21 and the second conductive layer 22 is gaited than the order for 1:1, and the order of beating up of the first conductive layer 21 and the second conductive layer 22 fabric is for 1:1.For the first conductive layer 21 in ensureing to weave separate with the second conductive layer 22, when knitting the second conductive layer 22 fabric, the first conductive layer 21 warp thread needs all to mention, and therefore shows through 41 and back weft 42 intertwined point place in organization chart 5, and showing through 41 is through interlacing point.Ensureing when weaving the weft yarn of the second conductive layer 22, showing to lift through 41, reaching the first conductive layer 21 and the second conductive layer 22 not access node.
According to the weaving process of reality, fabric tissue is divided into two parts, Part I is plain weave and the woven 12 of individual layer; Part II is the plain weave of individual layer and woven 11 and the double layer plain weave i.e. combination of the first conductive layer 21 and the second conductive layer 22, as shown in Figure 4.In order to realize fabric keyboard switch, need first to weave Part I woven 12, after having weaved woven 12, then first conductive layer 21 and second conductive layer 22 at woven 11 and double-deck keyboard position place in Part II is weaved, first conductive layer 21 and the second conductive layer 22 not access node, insulation spacer 31 is filled, as hard foam in the gap formed.After having weaved Part II, then weave Part I woven 12, consolidation has been carried out to key position.So both can realize the singly-bound that conductive layer is contactless.The period of adjustment double-layered structure, can adjust the size of button.The period of adjustment woven 11,12, can adjust the position of button.According to quantity and the status requirement of button, circulate this weaving process, until key switch is all weaved complete.
The utility model adopts carbon nano-tube yarn as electric conducting material, has higher precision and good linear characteristic.The table of the first conductive layer 21 of key position upper and lower conductive layers through 41 that is column circuits two ends connect the first electrical signal detection device by end line connector, the back weft 42 of the second conductive layer 22 at once circuit connects the second electrical signal detection device by end line connector, by to the monitoring of change in electric to detect the deformation occurrence positions of conductive yarn, as shown in Figure 8.If the signal of telecommunication of certain row there occurs change, can infer it must is that certain position of this row receives pressing; In like manner, if signal of telecommunication of certain row there occurs change simultaneously, can infer it must is that certain positions of this row also receives pressing simultaneously.According to the operation principle of matrix keyboard, can infer that key position must be on the joint of this row and these row, namely achieve the detection of button.
The utility model also provides a kind of application of fabric keyboard switch of contactless conductive layer, and 1-9 key position is all connected with a controller, controls different circuit respectively; In the present embodiment, when pressing No. 5 key positions, after controller detects that No. 5 key position switches are opened, start-up temperature adjuster; When pressing No. 3 key positions, controller detects that rear starting pressure adjuster opened by No. 3 key position switches; In like manner, after other key positions (1,2,4,6,7,8,9) are pressed, after controller detects that certain key position switch is opened, start the circuit that this key position controls.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. a fabric keyboard switch for contactless conductive layer, is characterized in that:
Comprise some key positions and some non-key positions;
Described non-key position is woven (12,11);
Each described key position includes two-layer fabric, described two-layer fabric comprises the first conductive layer (21) and the second conductive layer (22), the all or part of employing of warp thread of described first conductive layer (21) has the conductive yarn of piezoresistive effect, the first conductive layer (21) being positioned at the key position on same row shares the conductive yarn that a group has piezoresistive effect, forms the column circuits of switch; The all or part of employing of weft yarn of described second conductive layer (22) has the conductive yarn of piezoresistive effect, the second conductive layer (22) being positioned at the key position in same a line shares the conductive yarn that a group has piezoresistive effect, form the row circuit of switch, described first conductive layer (21) and described second conductive layer (22) not access node, be provided with imperforate insulation spacer (31) between described first conductive layer (21) and described second conductive layer (22).
2. the fabric keyboard switch of contactless conductive layer according to claim 1, is characterized in that: described conductive yarn is be coated with the PFY of carbon nanotube coating or apply the fiber filament of other pressure sensitives.
3. the fabric keyboard switch of contactless conductive layer according to claim 1, is characterized in that: described insulation spacer (31) is hard foam, electro-insulating rubber or insulating synthetic resin.
4. the fabric keyboard switch of contactless conductive layer according to claim 1, is characterized in that: described woven (12,11) is plain weave or twill-weave;
Described first conductive layer (21) and the second conductive layer (22) are plain weave or twill-weave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520714929.0U CN205039099U (en) | 2015-09-16 | 2015-09-16 | Fabric keyboard switch of non -contact conducting layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520714929.0U CN205039099U (en) | 2015-09-16 | 2015-09-16 | Fabric keyboard switch of non -contact conducting layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205039099U true CN205039099U (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520714929.0U Withdrawn - After Issue CN205039099U (en) | 2015-09-16 | 2015-09-16 | Fabric keyboard switch of non -contact conducting layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205039099U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140070A (en) * | 2015-09-16 | 2015-12-09 | 天津工业大学 | Fabric keyboard switch adopting non-contact electric conduction layers |
| CN111694450A (en) * | 2020-05-07 | 2020-09-22 | 天津工业大学 | Intelligent fabric controlled by support surface touch gesture |
-
2015
- 2015-09-16 CN CN201520714929.0U patent/CN205039099U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140070A (en) * | 2015-09-16 | 2015-12-09 | 天津工业大学 | Fabric keyboard switch adopting non-contact electric conduction layers |
| CN111694450A (en) * | 2020-05-07 | 2020-09-22 | 天津工业大学 | Intelligent fabric controlled by support surface touch gesture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160217 Effective date of abandoning: 20170606 |