CN104811084A - Friction generator, and touch pressure sensor and manufacture method thereof - Google Patents
Friction generator, and touch pressure sensor and manufacture method thereof Download PDFInfo
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- CN104811084A CN104811084A CN201410264131.0A CN201410264131A CN104811084A CN 104811084 A CN104811084 A CN 104811084A CN 201410264131 A CN201410264131 A CN 201410264131A CN 104811084 A CN104811084 A CN 104811084A
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Abstract
The invention discloses a friction generator. The friction generator comprises a casing, a plate electrode and an external electrode, wherein the elastic casing made of a high-molecular polymeric material is internally provided with an accommodation cavity; the plate electrode is placed in the accommodation cavity inside the casing, friction gaps exist between the plate electrode and the inner wall of the accommodation cavity, and mutual friction between the plate electrode and the inner wall of the accommodation cavity can generate electric energy; and the external electrode is arranged outside the accommodation cavity, and the plate electrode and the external electrode serve as output electrodes of the friction generator. The invention also provides a touch pressure sensor and a manufacture method thereof. According to the friction generator, and the touch pressure sensor and the manufacture method thereof, the manufacture technology is simple, the cost is low, the service life is long, sealing is easy, and the generator and pressure sensor tend not to damage.
Description
Technical field
The present invention relates to a kind of triboelectricity device, particularly relate to the manufacture method of a kind of friction generator, tactile sensor and tactile sensor.
Background technology
As everyone knows, can make negative electricity on side's band during phase mutual friction between object and object, the opposing party becomes positively charged, and this electricity produced due to friction between object is friction electricity.Friction electricity is one of modal phenomenon of nature, and the Production conditions of friction electricity is very wide in range, therefore, if friction electricity can be applied to power field, brings more facility will certainly to the life of people.
But the friction generator produced according to triboelectricity principle at present and the pressure sensitive cable ubiquity complex manufacturing technology applying this friction generator, manufacturing cost compared with high, friction area is little, touch press sensing should be insensitive etc. problem.
Summary of the invention
The manufacture method the object of the present invention is to provide that a kind of manufacture craft is simple, friction area is large, responded to sensitive friction generator, tactile sensor and tactile sensor.
For achieving the above object, the concrete technical scheme of the manufacture method of a kind of friction generator of the present invention, tactile sensor and tactile sensor is:
A kind of friction generator, comprising: housing, be made up of macromolecule polymer material, have elasticity, inside is formed with accommodating cavity; Battery lead plate, is seated in the accommodating cavity of enclosure interior, there is friction gap between the internal face of battery lead plate and accommodating cavity, and battery lead plate can produce electric energy with the internal face phase mutual friction of accommodating cavity; External electrode, is arranged on the outside of accommodating cavity, and battery lead plate and external electrode are the output electrode of friction generator.
A kind of tactile sensor, comprise above-mentioned friction generator, the hull outside of friction generator is provided with the screen for shielding interference signal, produces electrical signal of reaction when tactile sensor is subject to external force by friction generator, and is exported by the output electrode of friction generator.
A manufacture method for tactile sensor, comprises the process making friction generator and be wound around screen in the outside of triboelectricity engine housing,
Wherein, make friction generator to comprise the following steps: make the housing with the friction generator of opening, enclosure interior is formed with accommodating cavity; From the opening part of housing, battery lead plate is put into the accommodating cavity of enclosure interior, between the internal face of battery lead plate and accommodating cavity, will friction gap be had; With plug, the opening part of housing is sealed;
Or make friction generator and comprise the following steps: the housing making airtight friction generator, enclosure interior is formed with accommodating cavity; While the housing making friction generator, battery lead plate is directly sealed in the accommodating cavity of enclosure interior, is filled with spacer in accommodating cavity, to form friction gap between battery lead plate and the internal face of accommodating cavity.
Compared with prior art, the manufacture method of friction generator of the present invention, tactile sensor and tactile sensor has the following advantages:
A friction component in friction generator of the present invention is made into the frame structure of inner hollow, another friction component is put therein, friction area is increased, thus the electrical potential difference between electrode increases, accordingly, the induction of tactile sensor is also just sensitiveer, greatly improves the precision of transducer, especially may be used for sensing slight pressure.
Simply, cost is low, long service life, easily seals, not fragile for friction generator of the present invention and tactile sensor manufacture craft.
Accompanying drawing explanation
Fig. 1 is the transverse sectional view of the first embodiment of tactile sensor of the present invention;
Fig. 2 is the longitudinal sectional view of the first embodiment of tactile sensor of the present invention;
Fig. 3 is the transverse sectional view of the second embodiment of tactile sensor of the present invention;
Fig. 4 is the longitudinal sectional view of the second embodiment of tactile sensor of the present invention;
Fig. 5 is the transverse sectional view of the 3rd embodiment of tactile sensor of the present invention;
Fig. 6 is the longitudinal sectional view of the 3rd embodiment of tactile sensor of the present invention;
Fig. 7 is the transverse sectional view of the 4th embodiment of tactile sensor of the present invention;
Fig. 8 is the longitudinal sectional view of the 4th embodiment of tactile sensor of the present invention.
Embodiment
In order to better understand object of the present invention, structure and function, below in conjunction with accompanying drawing, further detailed description is done to the manufacture method of a kind of friction generator of the present invention, tactile sensor and tactile sensor.
Friction generator of the present invention comprises housing and battery lead plate.Wherein, housing is made up of macromolecule polymer material, has elasticity, and inside is formed with accommodating cavity; Battery lead plate is seated in the accommodating cavity of enclosure interior, there is friction gap between the internal face of battery lead plate and accommodating cavity, and battery lead plate can produce electric energy with the internal face phase mutual friction of accommodating cavity.
In addition, friction generator of the present invention also comprises external electrode, and external electrode is arranged on the outside of accommodating cavity, and battery lead plate and external electrode are the output electrode of friction generator.It should be noted, the external electrode in the present invention can be the electrode layer buried underground in the sidewall of the accommodating cavity of enclosure interior, or the electrode layer that hull outside is arranged.
Further, tactile sensor of the present invention comprises above-mentioned friction generator, the hull outside of friction generator is provided with the screen for shielding interference signal, tactile sensor produces electrical signal of reaction by friction generator when being subject to external force, and is exported by the output electrode of friction generator.
Specifically, as depicted in figs. 1 and 2, it illustrates the profile of the first embodiment of tactile sensor of the present invention.
In the present embodiment, the friction generator in tactile sensor comprises housing 1 and battery lead plate 2.Wherein, housing 1 has elasticity, and inside is formed with accommodating cavity 11; Battery lead plate 2 is seated in the accommodating cavity 11 of housing 1 inside, and there is friction gap between the internal face of battery lead plate 2 and accommodating cavity 11, and between battery lead plate 2 and the internal face of accommodating cavity 11, phase mutual friction can produce electrical signal of reaction.
Further, the outer felt of the housing 1 of friction generator is wound with the screen 4 that can be used for shielding interference signal.Wherein, screen 4 can be used as the external electrode of the friction generator in the present embodiment.Also, namely, in the present embodiment, battery lead plate 2 and screen 4 are the output electrode of friction generator.
Further, the housing 1 of friction generator is formed with opening, battery lead plate 2 can be placed to accommodating cavity 11 from the opening part of housing 1.In addition, the opening part of housing 1 is also provided with plug 5, to prevent entering of water and other harmful substances.Wherein, as shown in Figure 1, the housing 1 in the present embodiment is formed with two openings, but according to actual needs, also can one or more opening be only set.
Below in conjunction with accompanying drawing, brief description is carried out to the operation principle of the tactile sensor in the present embodiment: when tactile sensor is subject to External Force Acting and makes friction generator generation mechanical deformation, battery lead plate 2 in the accommodating cavity 11 of housing 1 inside and phase mutual friction can produce electrostatic charge between the internal face of accommodating cavity 11, thus positive and negative charge is induced respectively on battery lead plate 2 and screen 4, just can cause thus occurring electrical potential difference between battery lead plate 2 and screen 4.Due to the existence of electrical potential difference between battery lead plate 2 and screen 4, free electron flows to the high side of electromotive force by by external circuit by the side that electromotive force is low, thus forms electric current in external circuit.When this friction generator returns to original state, at this moment the built-in potential be formed between battery lead plate 2 and screen 4 disappears, now will again produce reverse electrical potential difference between Balanced battery lead plate 2 and screen 4, then free electron forms reverse current by external circuit.In a particular application, above-mentioned friction generator is under stress condition, by the friction between battery lead plate 2 and the internal face of accommodating cavity 11, can produce and the pressure size voltage signal be one to one applied on tactile sensor, the relation of pressure and voltage signal is preferably monotonic increase relation or linear relationship.
Further, in the present embodiment, the material of housing 1 can be and is selected from polyimides, aniline-formaldehyde resin, polyformaldehyde, ethyl cellulose, polyamide, melamino-formaldehyde, polyethylene glycol succinate, cellulose, cellulose ethanoate, polyethylene glycol adipate, polydiallyl phthalate, cellulose sponge, renewable sponge, polyurethane elastomer, styrene-acrylonitrile copolymer copolymer, styrene-butadiene-copolymer, staple fibre, poly-methyl, methacrylate, polyvinyl alcohol, polyvinyl alcohol, polyester, polyisobutene, polyurethane flexible sponge, PETG, polyvinyl butyral resin, formaldehyde-phenol, neoprene, butadiene-propylene copolymer, natural rubber, polyacrylonitrile, any one in acrylonitrile vinyl chloride and polyethylene third diphenol carbonate, be preferably PDMS material.
The material of battery lead plate 2 be selected from indium tin oxide, Graphene, nano silver wire film, metal or alloy any one, wherein, metal is Au Ag Pt Pd, aluminium, nickel, copper, titanium, chromium, tin, iron, manganese, molybdenum, tungsten or vanadium; Alloy is aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, lead alloy, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
Screen 4 can adopt braiding copper mesh, copper shield band, aluminium-plastic tape or compound copper-plastics band etc. to make, and concrete material can the material of reference electrode plate 2 be selected, and repeats no more herein.
Further, the outside of screen 4 also can arrange protective layer (not shown), plays a protective role for whole tactile sensor, prevents sharppointed article from scratching tactile sensor.In addition, as shown in Figure 1, the cross sectional shape of the tactile sensor in the present embodiment is rectangle.Certainly, be not limited thereto in the present invention, its cross sectional shape also can be circle, other polygon or irregular geometries etc.
As shown in Figure 3 and Figure 4, it illustrates the profile of the second embodiment of tactile sensor of the present invention.The difference of the present embodiment and the first embodiment is, be embedded with electrode layer 3 in the sidewall of the accommodating cavity 11 of housing 1 inside of friction generator, this electrode layer 3 can be used as the external electrode in the present embodiment.Also, namely, in the present embodiment, the output electrode that battery lead plate in the accommodating cavity 11 of housing 1 inside 2 and the electrode layer 3 be arranged in the sidewall of accommodating cavity 11 are friction generator is arranged on.Compared with the first embodiment, the interference free performance of this kind of mode is better.
As shown in Figure 5 and Figure 6, it illustrates the profile of the 3rd embodiment of tactile sensor of the present invention.Compared with the first embodiment, in the present embodiment, the housing 1 of friction generator is closed structure, and battery lead plate 2 is directly sealed in the accommodating cavity 11 of housing 1 inside.
Further, in the accommodating cavity 11 of housing 1 inside, also spacer can be filled with, to form friction gap between battery lead plate 2 and the internal face of accommodating cavity 11.Specifically, the spacer of filling in accommodating cavity 11 can be gas or iknsulating liquid etc., and wherein, iknsulating liquid can be the liquid with insulation property that glycerine etc. is commonly used.
The principle of the tactile sensor of the present embodiment and the Material selec-tion of each assembly with reference to shown in the first embodiment, no longer can describe in detail herein.
Housing 1 due to friction generator in the present embodiment is closed structure, and be also filled with spacer in the accommodating cavity 11 of housing 1 inside, therefore compare with the second embodiment with the first embodiment, cavity filling is carried out owing to adopting gas or iknsulating liquid, so the side thickness of housing 1 reduces further, thus may be used for sensing slight pressure, the induction sensitivity of whole tactile sensor significantly improves.
As shown in Figure 7 and Figure 8, it illustrates the profile of the 4th embodiment of tactile sensor of the present invention.The difference of the present embodiment and the 3rd embodiment is, be embedded with electrode layer 3 in the sidewall of the accommodating cavity 11 of housing 1 inside of friction generator, this electrode layer 3 can be used as the external electrode in the present embodiment.Also, namely, in the present embodiment, the output electrode that battery lead plate in the accommodating cavity 11 of housing 1 inside 2 and the electrode layer 3 be arranged in the sidewall of accommodating cavity 11 are friction generator is arranged on.Compared with the 3rd embodiment, the interference free performance of this kind of mode is better.
Be briefly described below in conjunction with the manufacture craft of accompanying drawing to tactile sensor of the present invention.
The manufacture method of tactile sensor of the present invention comprises the process making friction generator and be wound around screen in the outside of triboelectricity engine housing.Wherein, make friction generator to comprise the following steps:
First kind of way:
Adopt the mode of extrusion modling or injection mo(u)lding to process the housing of the friction generator with opening, enclosure interior is formed with accommodating cavity.Wherein, the cross sectional shape of housing changes by the forming nozzle changing extrusion equipment.
From the opening part of the housing completed, battery lead plate is put into the accommodating cavity of enclosure interior, wherein, between the internal face of battery lead plate and accommodating cavity, will friction gap be had.
With plug, the opening part of housing is sealed, to prevent entering of water and other harmful substances.Wherein, the type of attachment of plug and housing can adopt bonding or utilize the crimp mode of housing and plug to clamp.
The second way:
Adopt the mode of injection mo(u)lding and compression molding to make the housing of airtight friction generator, enclosure interior is formed with accommodating cavity.
While the housing making friction generator, battery lead plate is directly sealed in the accommodating cavity of enclosure interior, wherein, spacer can be filled with, as gas or iknsulating liquid etc., to form friction gap between battery lead plate and the internal face of accommodating cavity in accommodating cavity.
Further, after friction generator completes, can at the screen of hull outside winding for shielding interference signal of friction generator.Or as required, also at the arranged outside protective layer of screen, tactile sensor can be scratched to prevent sharppointed article.
It should be noted, the tactile sensor made by the way, friction generator can directly use screen as external electrode, and also namely the output electrode of friction generator is battery lead plate and screen.In addition, have in the process of the housing of the friction generator of opening or the housing of airtight friction generator in making, also can bury electrode layer underground in the sidewall of the accommodating cavity of enclosure interior, using as external electrode, namely also the output electrode of friction generator is battery lead plate and electrode layer, and the tactile sensor interference free performance that this kind of mode makes is better.
Further describe invention has been by specific embodiment above; but it should be understood that; here concrete description; should not be construed as the restriction to the spirit and scope of the invention; one of ordinary skilled in the art to the various amendments that above-described embodiment is made, belongs to the scope that the present invention protects after reading this specification.
Claims (13)
1. a friction generator, is characterized in that, comprising:
Housing, is made up of macromolecule polymer material, has elasticity, and inside is formed with accommodating cavity;
Battery lead plate, is seated in the accommodating cavity of enclosure interior, there is friction gap between the internal face of battery lead plate and accommodating cavity, and battery lead plate can produce electric energy with the internal face phase mutual friction of accommodating cavity;
External electrode, is arranged on the outside of accommodating cavity, and battery lead plate and external electrode are the output electrode of friction generator.
2. friction generator according to claim 1, is characterized in that, housing is formed with opening, and battery lead plate can be placed to accommodating cavity from the opening part of housing, and the opening part of housing is provided with plug.
3. friction generator according to claim 1, is characterized in that, housing is closed structure, and battery lead plate is directly sealed in accommodating cavity.
4. friction generator according to claim 1, is characterized in that, is filled with spacer in accommodating cavity, to form friction gap between battery lead plate and the internal face of accommodating cavity.
5. friction generator according to claim 4, is characterized in that, the spacer be filled in accommodating cavity is gas or iknsulating liquid.
6. friction generator according to claim 1, is characterized in that, be embedded with the electrode layer that can be used as external electrode, or the arranged outside of housing has the electrode layer that can be used as external electrode in the sidewall of the accommodating cavity of enclosure interior.
7. friction generator according to claim 1, is characterized in that,
The material of housing is for being selected from polyimides, aniline-formaldehyde resin, polyformaldehyde, ethyl cellulose, polyamide, melamino-formaldehyde, polyethylene glycol succinate, cellulose, cellulose ethanoate, polyethylene glycol adipate, polydiallyl phthalate, cellulose sponge, renewable sponge, polyurethane elastomer, styrene-acrylonitrile copolymer copolymer, styrene-butadiene-copolymer, staple fibre, poly-methyl, methacrylate, polyvinyl alcohol, polyvinyl alcohol, polyester, polyisobutene, polyurethane flexible sponge, PETG, polyvinyl butyral resin, formaldehyde-phenol, neoprene, butadiene-propylene copolymer, natural rubber, polyacrylonitrile, any one in acrylonitrile vinyl chloride and polyethylene third diphenol carbonate,
The material of battery lead plate be selected from indium tin oxide, Graphene, nano silver wire film, metal or alloy any one, wherein, metal is Au Ag Pt Pd, aluminium, nickel, copper, titanium, chromium, tin, iron, manganese, molybdenum, tungsten or vanadium; Alloy is aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, lead alloy, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
8. a tactile sensor, it is characterized in that, comprise the friction generator in above-mentioned arbitrary claim, the hull outside of friction generator is provided with the screen for shielding interference signal, tactile sensor produces electrical signal of reaction by friction generator when being subject to external force, and is exported by the output electrode of friction generator.
9. tactile sensor according to claim 8, is characterized in that, the external electrode of friction generator is the electrode layer in the sidewall of the accommodating cavity being embedded in enclosure interior, or is arranged on the screen of hull outside.
10. tactile sensor according to claim 8, is characterized in that, the cross sectional shape of tactile sensor is circle, polygon or irregular geometry.
The manufacture method of 11. 1 kinds of tactile sensors, is characterized in that, comprises the process making friction generator and be wound around screen in the outside of triboelectricity engine housing, wherein, makes friction generator and comprises the following steps:
Make the housing with the friction generator of opening, enclosure interior is formed with accommodating cavity;
From the opening part of housing, battery lead plate is put into the accommodating cavity of enclosure interior, between the internal face of battery lead plate and accommodating cavity, will friction gap be had;
With plug, the opening part of housing is sealed.
The manufacture method of 12. 1 kinds of tactile sensors, is characterized in that, comprises the process making friction generator and be wound around screen in the outside of triboelectricity engine housing, wherein, makes friction generator and comprises the following steps:
Make the housing of airtight friction generator, enclosure interior is formed with accommodating cavity;
While the housing making friction generator, battery lead plate is directly sealed in the accommodating cavity of enclosure interior, is filled with spacer in accommodating cavity, to form friction gap between battery lead plate and the internal face of accommodating cavity.
The manufacture method of 13. tactile sensors according to claim 11 or 12, it is characterized in that, when making has the housing of the friction generator of opening or the housing of airtight friction generator, electrode layer is buried underground, using the external electrode as friction generator in the sidewall of the accommodating cavity of enclosure interior.
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| CN106626503A (en) * | 2016-12-27 | 2017-05-10 | 银川西部大森数控技术有限公司 | Built-in force sensor capable of directly measuring force |
| CN109194186A (en) * | 2018-10-26 | 2019-01-11 | 京东方科技集团股份有限公司 | Triboelectricity device and wearable device |
| CN109474199A (en) * | 2018-11-16 | 2019-03-15 | 重庆大学 | Self charge motivates friction generator |
| CN110132460A (en) * | 2019-04-19 | 2019-08-16 | 浙江大学 | A kind of flexible sensitive pressure sensing device based on porous structure |
| US10931209B2 (en) | 2016-06-29 | 2021-02-23 | Samsung Electronics Co., Ltd. | Energy harvester using triboelectricity and apparatus including the same |
| CN114739539A (en) * | 2022-04-08 | 2022-07-12 | 苏州大学 | Laminated triboelectric pressure sensor and preparation method thereof |
| CN115046658A (en) * | 2022-06-24 | 2022-09-13 | 山东大学 | Self-powered pressure sensor and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105897035A (en) * | 2016-04-25 | 2016-08-24 | 北京大学 | Stretchable friction type energy harvester and production method thereof |
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| US10931209B2 (en) | 2016-06-29 | 2021-02-23 | Samsung Electronics Co., Ltd. | Energy harvester using triboelectricity and apparatus including the same |
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| CN109474199B (en) * | 2018-11-16 | 2020-06-23 | 重庆大学 | Self-charge excitation friction generator |
| CN110132460A (en) * | 2019-04-19 | 2019-08-16 | 浙江大学 | A kind of flexible sensitive pressure sensing device based on porous structure |
| CN114739539A (en) * | 2022-04-08 | 2022-07-12 | 苏州大学 | Laminated triboelectric pressure sensor and preparation method thereof |
| CN114739539B (en) * | 2022-04-08 | 2024-01-05 | 苏州大学 | Laminated friction voltage sensor and preparation method thereof |
| CN115046658A (en) * | 2022-06-24 | 2022-09-13 | 山东大学 | Self-powered pressure sensor and preparation method thereof |
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