CN104811084B - 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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- CN104811084B CN104811084B CN201410264131.0A CN201410264131A CN104811084B CN 104811084 B CN104811084 B CN 104811084B CN 201410264131 A CN201410264131 A CN 201410264131A CN 104811084 B CN104811084 B CN 104811084B
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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, more particularly to a kind of friction generator, tactile sensor and press biography
The manufacture method of sensor.
Background technology
It is well known that a side can be made to take negative electricity between object and object during phase mutual friction, the opposing party becomes positively charged, this
The electricity produced due to rubbing between object is franklinic electricity.Franklinic electricity is one of modal phenomenon of nature, and the product of franklinic electricity
Carded sliver part is very wide in range, if it is possible to franklinic electricity is applied to into power field, the life that will certainly be given people brings more
Facility.
But the friction generator produced according to triboelectricity principle at present and the pressure sensitive using the friction generator
Cable generally existing complex manufacturing technology, manufacturing cost are little compared with high, friction area, the problems such as touch press sensing answers insensitive.
The content of the invention
It is an object of the invention to provide a kind of processing technology is simple, friction area big, sense sensitive friction generator,
The manufacture method of tactile sensor and tactile sensor.
For achieving the above object, the making side of a kind of friction generator, tactile sensor and tactile sensor of the invention
The concrete technical scheme of method is：
A kind of friction generator, including：Housing, is made up of macromolecule polymer material, with elasticity, has been internally formed appearance
It is empty chamber；, in being seated in the accommodating cavity of enclosure interior, there is friction between the internal face of battery lead plate and accommodating cavity in battery lead plate
Gap, battery lead plate can produce electric energy with the internal face phase mutual friction of accommodating cavity；External electrode, is arranged on the outer of accommodating cavity
Portion, battery lead plate and the output electrode that external electrode is friction generator.
A kind of tactile sensor, including above-mentioned friction generator, the hull outside of friction generator is provided with for shielding
The screen layer of interference signal, electrical signal of reaction can be produced when tactile sensor is subject to external force by friction generator, and by rubbing
Wipe the output electrode output of electromotor.
A kind of manufacture method of tactile sensor, including make friction generator and twine in the outside of friction generator housing
Around the process of screen layer,
Wherein, make friction generator to comprise the following steps：The housing of the friction generator with opening is made, in housing
Portion is formed with accommodating cavity；Battery lead plate is put in the accommodating cavity of enclosure interior from the opening of housing, battery lead plate with hold
Being empty between the internal face in chamber will have friction gap；Sealed with opening of the plug by housing；
Or, make friction generator and comprise the following steps：Make the housing of closed friction generator, enclosure interior shape
Into there is accommodating cavity；Battery lead plate is sealed directly to the accommodating cavity of enclosure interior while the housing of friction generator is made
In, house and be filled with cavity spacer, to form friction gap between the internal face of battery lead plate and accommodating cavity.
Compared with prior art, the manufacture method tool of friction generator, tactile sensor and tactile sensor of the invention
Have the advantage that：
A friction component in the friction generator of the present invention is fabricated to the frame structure of inner hollow, another friction group
Part is seated in inside it so that friction area increases, so as to the electric potential difference between electrode increases, accordingly, tactile sensor
Sensing is also just sensitiveer, greatly improves the precision of sensor, it is particularly possible to for sensing slight pressure.
The friction generator and tactile sensor processing technology of the present invention is simple, low cost, and long service life is easily close
Envelope, is hardly damaged.
Description of the drawings
Fig. 1 is the transverse sectional view of the first embodiment of the tactile sensor of the present invention；
Fig. 2 is the longitudinal sectional view of the first embodiment of the tactile sensor of the present invention；
Fig. 3 is the transverse sectional view of the second embodiment of the tactile sensor of the present invention；
Fig. 4 is the longitudinal sectional view of the second embodiment of the tactile sensor of the present invention；
Fig. 5 is the transverse sectional view of the 3rd embodiment of the tactile sensor of the present invention；
Fig. 6 is the longitudinal sectional view of the 3rd embodiment of the tactile sensor of the present invention；
Fig. 7 is the transverse sectional view of the fourth embodiment of the tactile sensor of the present invention；
Fig. 8 is the longitudinal sectional view of the fourth embodiment of the tactile sensor of the present invention.
Specific embodiment
In order to be better understood by the purpose of the present invention, structure and function, below in conjunction with the accompanying drawings, a kind of friction to the present invention
The manufacture method of electromotor, tactile sensor and tactile sensor does further detailed description.
The friction generator of the present invention includes housing and battery lead plate.Wherein, housing is made up of macromolecule polymer material, tool
It is flexible, it has been internally formed accommodating cavity；Battery lead plate is seated in the accommodating cavity of enclosure interior, battery lead plate and accommodating cavity
There is friction gap between internal face, battery lead plate can produce electric energy with the internal face phase mutual friction of accommodating cavity.
Additionally, the friction generator of the present invention also includes external electrode, external electrode is arranged on the outside of accommodating cavity, electricity
Pole plate and the output electrode that external electrode is friction generator.It should be noted that the external electrode in the present invention can be housing
The electrode layer buried in the side wall of internal accommodating cavity, or the electrode layer that hull outside is arranged.
Further, tactile sensor of the invention includes above-mentioned friction generator, and the hull outside of friction generator sets
The screen layer for shielding interference signal is equipped with, sensing telecommunications can be produced by friction generator when tactile sensor is subject to external force
Number, and exported by the output electrode of friction generator.
Specifically, as depicted in figs. 1 and 2, it illustrates the section of the first embodiment of the tactile sensor of the present invention
Figure.
In the present embodiment, the friction generator in tactile sensor includes housing 1 and battery lead plate 2.Wherein, housing 1 has
Elasticity, has been internally formed accommodating cavity 11；Battery lead plate 2 is seated in the accommodating cavity 11 inside housing 1, and battery lead plate 2 and appearance
It is empty between the internal face in chamber 11 and there is friction gap, phase mutual friction between battery lead plate 2 and the internal face of accommodating cavity 11 can be produced
Raw electrical signal of reaction.
Further, the outside of the housing 1 of friction generator is wound with the screen layer 4 that can be used for shielding interference signal.Wherein,
Screen layer 4 can be used as the external electrode of the friction generator in the present embodiment.That is, in the present embodiment, battery lead plate 2 and screen layer
4 is the output electrode of friction generator.
Further, opening is formed with the housing 1 of friction generator, battery lead plate 2 can be placed to appearance from the opening of housing 1
In being empty chamber 11.Additionally, plug 5 is additionally provided with the opening of housing 1, to prevent the entrance of water and other harmful substances.Wherein,
As shown in figure 1, be formed with two openings on the housing 1 in the present embodiment, but according to actual needs, one or more also can be only arranged
Multiple openings.
The operation principle of the tactile sensor in the present embodiment is briefly described below in conjunction with the accompanying drawings：When pressing sensing
Device be subject to external force act on and make friction generator occur mechanical deformation when, the battery lead plate 2 in accommodating cavity 11 housing 1 inside and
Meeting phase mutual friction between the internal face of accommodating cavity 11 produces electrostatic charge, so as to be respectively induced out on battery lead plate 2 and screen layer 4
Positive and negative charge, thus will cause electric potential difference occur between battery lead plate 2 and screen layer 4.Due between battery lead plate 2 and screen layer 4
The presence of electric potential difference, free electron will flow to the high side of potential by external circuit by the low side of potential, so as in external circuit
Middle formation electric current.When the friction generator returns to original state, at this moment it is formed in interior between battery lead plate 2 and screen layer 4
Potential disappears, and now will again produce reverse electric potential difference between Balanced battery lead plate 2 and screen layer 4, then free electron leads to
Cross external circuit and form reverse current.In a particular application, above-mentioned friction generator is under stress condition, by battery lead plate 2 with hold
The friction being empty between the internal face in chamber 11, the pressure size that can be produced and be applied on tactile sensor is electric correspondingly
Pressure signal, pressure is preferably monotonic increase relation or linear relationship with the relation of voltage signal.
Further, in the present embodiment, the material of housing 1 can be selected from polyimides, aniline-formaldehyde resin, polyformaldehyde, second
Base cellulose, polyamide, melamino-formaldehyde, Polyethylene Glycol succinate, cellulose, cellulose ethanoate, polyadipate second
Diol ester, polydiallyl phthalate, cellulose sponge, renewable sponge, polyurethane elastomer, styrene-acrylonitrile copolymer copolymerization
Thing, styrene-butadiene-copolymer, staple fibre, poly- methyl, it is methacrylate, polyvinyl alcohol, polyvinyl alcohol, polyester, poly-
Isobutene., polyurethane flexible sponge, polyethylene terephthalate, polyvinyl butyral resin, formaldehyde-phenol, neoprene,
It is any one in butadiene-propylene copolymer, natural rubber, polyacrylonitrile, acrylonitrile vinyl chloride and polyethylene the third diphenol carbonate
Plant, preferably PDMS material.
The material of battery lead plate 2 is any one in indium tin oxide, Graphene, nano silver wire film, metal or alloy
Kind, wherein, metal is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium；Alloy is aluminium alloy, titanium conjunction
Gold, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, tin alloy, cadmium alloy, bismuth alloy, indium are closed
Gold, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
Screen layer 4 can be made using braiding copper mesh, copper shield band, aluminium-plastic tape or compound copper-plastics band etc., specifically
Material is referred to the material of battery lead plate 2 and is selected, and here is omitted.
Further, the outside of screen layer 4 can also arrange protective layer (not shown), for rising to whole tactile sensor
To protective effect, prevent sharppointed article from scratching tactile sensor.Additionally, as shown in figure 1, tactile sensor in the present embodiment
Cross sectional shape is rectangle.Certainly, it is not limited thereto in the present invention, its cross sectional shape is alternatively circular, other polygons or not
Geometry of rule etc..
As shown in Figure 3 and Figure 4, it illustrates the profile of the second embodiment of the tactile sensor of the present invention.This enforcement
Example is to be embedded with electrode in the side wall of the accommodating cavity 11 inside the housing 1 of friction generator with the difference of first embodiment
Layer 3, the electrode layer 3 can be used as the external electrode in the present embodiment.That is, in the present embodiment, being arranged on accommodating inside housing 1
Battery lead plate 2 in cavity 11 and the output electrode that the electrode layer 3 being arranged in the side wall of accommodating cavity 11 is friction generator.With
First embodiment is compared, and the interference free performance of this kind of mode is more preferable.
As shown in Figure 5 and Figure 6, it illustrates the profile of the 3rd embodiment of the tactile sensor of the present invention.With first
Embodiment is compared, and in the present embodiment, the housing 1 of friction generator is closed structure, and battery lead plate 2 is sealed directly in housing 1
In the accommodating cavity 11 in portion.
Further, spacer is can also be filled with the accommodating cavity 11 inside housing 1, with battery lead plate 2 and accommodating cavity
Friction gap is formed between 11 internal face.Specifically, it can be gas or dielectric to house the spacer filled in cavity 11
Body etc., wherein, iknsulating liquid can be the conventional liquid with insulating properties such as glycerol.
The material of the principle of the tactile sensor of the present embodiment and each component selects to refer to shown in first embodiment, this
Place is no longer described in detail.
Because the housing 1 of friction generator is in the accommodating cavity 11 inside closed structure, and housing 1 in the present embodiment
Spacer is also filled with, therefore is compared with first embodiment with second embodiment, due to being filled using gas or iknsulating liquid
Cavity, so the side thickness of housing 1 further reduces, such that it is able to be used to sense slight pressure, the sense of whole tactile sensor
Sensitivity is answered to significantly improve.
As shown in Figure 7 and Figure 8, it illustrates the profile of the fourth embodiment of the tactile sensor of the present invention.This enforcement
Example is to be embedded with electrode in the side wall of the accommodating cavity 11 inside the housing 1 of friction generator with the difference of 3rd embodiment
Layer 3, the electrode layer 3 can be used as the external electrode in the present embodiment.That is, in the present embodiment, being arranged on accommodating inside housing 1
Battery lead plate 2 in cavity 11 and the output electrode that the electrode layer 3 being arranged in the side wall of accommodating cavity 11 is friction generator.With
3rd embodiment is compared, and the interference free performance of this kind of mode is more preferable.
The processing technology of the tactile sensor of the present invention is briefly described below in conjunction with the accompanying drawings.
The manufacture method of the tactile sensor of the present invention includes making friction generator and in the outer of friction generator housing
Portion winds the process of screen layer.Wherein, make friction generator to comprise the following steps：
First kind of way：
The housing of the friction generator with opening, enclosure interior shape are processed by the way of extrusion molding or injection mo(u)lding
Into there is accommodating cavity.Wherein, the cross sectional shape of housing can be changed by changing the forming nozzle of extrusion equipment.
Battery lead plate is put in the accommodating cavity of enclosure interior from the opening of the housing for completing, wherein, electrode
There is friction gap between the internal face of plate and accommodating cavity.
Sealed with opening of the plug by housing, to prevent the entrance of water and other harmful substances.Wherein, plug and housing
Type of attachment can using bonding or be clamped with the crimp mode of plug using housing.
The second way：
The housing of closed friction generator is made by the way of injection mo(u)lding and compression molding, enclosure interior is formed with
Accommodating cavity.
Battery lead plate is sealed directly in the accommodating cavity of enclosure interior while the housing of friction generator is made, its
In, house and can be filled with cavity spacer, such as gas or iknsulating liquid, with the internal face of battery lead plate and accommodating cavity it
Between form friction gap.
Further, after friction generator completes, can wind dry for shielding in the hull outside of friction generator
Disturb the screen layer of signal.Or as needed, also protective layer can be set in the outside of screen layer, touched with preventing sharppointed article from scratching
Pressure sensor.
It should be noted that the tactile sensor for making by the way, friction generator can be used directly screen layer work
For external electrode, namely the output electrode of friction generator is battery lead plate and screen layer.Additionally, making the friction with opening
During the housing of the housing of electromotor or closed friction generator, can also be in the side wall of the accommodating cavity of enclosure interior
Embedded electrode layer, using as external electrode, namely the output electrode of friction generator is battery lead plate and electrode layer, this kind of mode system
The tactile sensor interference free performance of work is more preferable.
Above the present invention is further described by specific embodiment, it should be understood that, here specifically
Description, should not be construed as the restriction to the spirit and scope of the invention, and one of ordinary skilled in the art is reading this explanation
The various modifications made to above-described embodiment after book, belong to the scope that the present invention is protected.
Claims (11)
1. a kind of friction generator, it is characterised in that include：
Housing, is made up of macromolecule polymer material, with elasticity, has been internally formed accommodating cavity；
Battery lead plate, in being seated in the accommodating cavity of enclosure interior, exists between friction between the internal face of battery lead plate and accommodating cavity
Gap, 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, battery lead plate and the output electrode that external electrode is friction generator；
Wherein, opening is formed with housing, battery lead plate can be placed in accommodating cavity from the opening of housing, at the opening of housing
It is provided with plug.
2. friction generator according to claim 1, it is characterised in that spacer is filled with accommodating cavity, with electricity
Friction gap is formed between the internal face of pole plate and accommodating cavity.
3. friction generator according to claim 2, it is characterised in that the spacer being filled in accommodating cavity is gas
Or iknsulating liquid.
4. friction generator according to claim 1, it is characterised in that bury in the side wall of the accommodating cavity of enclosure interior
Having can be used as the electrode layer of external electrode, or be provided with the outside of housing can be used as the electrode layer of external electrode.
5. friction generator according to claim 1, it is characterised in that
The material of housing is selected from polyimides, aniline-formaldehyde resin, polyformaldehyde, ethyl cellulose, polyamide, tripolycyanamide first
Aldehyde, Polyethylene Glycol succinate, cellulose, cellulose ethanoate, 10PE27, poly- diallyl phthalate third
It is ester, cellulose sponge, renewable sponge, polyurethane elastomer, styrene-acrylonitrile copolymer copolymer, styrene-butadiene-copolymer, artificial
Fiber, poly- methyl, it is methacrylate, polyvinyl alcohol, polyvinyl alcohol, polyester, polyisobutylene, polyurethane flexible sponge, poly- right
PET, polyvinyl butyral resin, formaldehyde-phenol, neoprene, butadiene-propylene copolymer, natural rubber,
Any one in polyacrylonitrile, acrylonitrile vinyl chloride and polyethylene the third diphenol carbonate；
The material of battery lead plate is any one in indium tin oxide, Graphene, nano silver wire film, metal or alloy, its
In, metal is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium；Alloy is aluminium alloy, titanium alloy, magnesium
Alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium
Alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
6. a kind of tactile sensor, it is characterised in that including the friction generator in any of the above-described claim, friction generator
Hull outside be provided with screen layer for shielding interference signal, tactile sensor is subject to that during external force friction generator can be passed through
Electrical signal of reaction is produced, and is exported by the output electrode of friction generator.
7. tactile sensor according to claim 6, it is characterised in that the external electrode of friction generator is to be embedded in shell
Electrode layer in the side wall of the accommodating cavity in portion, or the screen layer for being arranged on hull outside in vivo.
8. tactile sensor according to claim 6, it is characterised in that the cross sectional shape of tactile sensor is circular, many
Side shape or irregular geometry.
9. a kind of manufacture method of tactile sensor, for making the tactile sensor any one of claim 6-8, its
It is characterised by, including makes the process of friction generator and the outside winding screen layer in friction generator housing, wherein, make
Friction generator is comprised the following steps：
The housing of the friction generator with opening is made, enclosure interior is formed with accommodating cavity；
Battery lead plate is put in the accommodating cavity of enclosure interior from the opening of housing, the internal face of battery lead plate and accommodating cavity
Between there is friction gap；
Sealed with opening of the plug by housing.
10. a kind of manufacture method of tactile sensor, for making the tactile sensor any one of claim 6-8,
Characterized in that, the process of the outside winding screen layer including friction generator is made and in friction generator housing, wherein, system
Comprise the following steps as friction generator：
The housing of closed friction generator is made, enclosure interior is formed with accommodating cavity；
Battery lead plate is sealed directly in the accommodating cavity of enclosure interior while the housing of friction generator is made, houses sky
Spacer is filled with chamber, to form friction gap between the internal face of battery lead plate and accommodating cavity.
The manufacture method of 11. tactile sensors according to claim 9 or 10, it is characterised in that there is opening making
Friction generator housing or closed friction generator housing when, in the side wall of the accommodating cavity of enclosure interior
Embedded electrode layer, using the external electrode as friction generator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410264131.0A CN104811084B (en) | 2014-06-13 | 2014-06-13 | Friction generator, and touch pressure sensor and manufacture method thereof |
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|---|---|---|---|
| CN201410264131.0A CN104811084B (en) | 2014-06-13 | 2014-06-13 | Friction generator, and touch pressure sensor and manufacture method thereof |
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| CN104811084B true CN104811084B (en) | 2017-05-03 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105897035B (en) * | 2016-04-25 | 2018-05-29 | 北京大学 | Stretchable frictional energy collecting device and preparation method thereof |
| KR102581469B1 (en) | 2016-06-29 | 2023-09-21 | 삼성전자주식회사 | Energy harvester using triboelectricity and apparatus including the same |
| CN106626503B (en) * | 2016-12-27 | 2019-02-12 | 银川西部大森数控技术有限公司 | A kind of built-in force snesor that direct measuring force may be implemented |
| CN109194186B (en) * | 2018-10-26 | 2020-01-10 | 京东方科技集团股份有限公司 | Friction power generation device and wearable equipment |
| CN109474199B (en) * | 2018-11-16 | 2020-06-23 | 重庆大学 | Self-charge excitation friction generator |
| CN110132460B (en) * | 2019-04-19 | 2020-11-06 | 浙江大学 | Flexible sensitive pressure sensing device based on porous structure |
| CN114739539B (en) * | 2022-04-08 | 2024-01-05 | 苏州大学 | Laminated friction voltage sensor and preparation method thereof |
| CN115046658B (en) * | 2022-06-24 | 2023-05-09 | 山东大学 | Self-powered pressure sensor and preparation method thereof |
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