CN206505740U - Piezoelectric cable - Google Patents
Piezoelectric cable Download PDFInfo
- Publication number
- CN206505740U CN206505740U CN201720074641.0U CN201720074641U CN206505740U CN 206505740 U CN206505740 U CN 206505740U CN 201720074641 U CN201720074641 U CN 201720074641U CN 206505740 U CN206505740 U CN 206505740U
- Authority
- CN
- China
- Prior art keywords
- piezoelectric
- battery core
- flexible battery
- thin film
- film layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Transducers For Ultrasonic Waves (AREA)
Abstract
The utility model discloses a kind of piezoelectric cable, including：Protective layer, and it is arranged on flexible battery core on the inside of the protective layer, piezoelectric thin film layer, conductive layer；The outside of the flexible battery core, which is wrapped up, sets the conductive layer on the outside of the piezoelectric thin film layer, piezoelectric thin film layer；The two sides of the piezoelectric thin film layer is electrically connected with the flexible battery core and conductive layer respectively.Piezoelectric cable of the present utility model, its battery core is conductive flexible battery core, parcel piezoelectric thin film layer on the outside of flexible battery core, the outside parcel conductive layer of piezoelectric thin film layer, when external force acts on piezoelectric cable, flexible battery core is deformed, and therefore tension variation can occur for the piezoelectric thin film layer being wrapped in flexible battery core, so as to produce charge signal, it between battery core and conductive layer without setting the projection and corresponding depression being mutually twisted, so without special production technology, production is simple；Piezoelectric membrane is without hanging setting, and the damage to piezoelectric membrane after stress is smaller, improves service life.
Description
Technical field
The utility model is related to pressure sensing field, especially relates to a kind of piezoelectric cable.
Background technology
Experience the phenomenon that tension force produces piezo-electric effect using piezoelectric membrane, be widely used in pressure sensing field.It is existing
Having the shortcomings that to exist in technology piezoelectric cable has that sensitivity is low, service life is short, such as the piezoelectricity of U.S. Jing Liang electronics corporations
Cable, it, which is utilized, is clipped in the piezoelectric membrane between metallic conductor by generation stretching after the metal surface extruding with out-of-flatness
Produce the conductive film and conductive film outside signal, its cable flexibility battery core and the piezoelectric membrane of spiral winding, piezoelectric membrane
Outside metal wire layer need to be engaged accurate, its insulating barrier is easily destroyed, and is lacked flexible etc., is seriously limited sensitivity
Further lifting, also compromises its service life, production difficulty is higher.
Utility model content
Main purpose of the present utility model is a kind of piezoelectric cable of service life length of offer.
In order to realize above-mentioned utility model purpose, the utility model proposes a kind of piezoelectric cable, including：Protective layer, and
It is arranged on flexible battery core on the inside of the protective layer, piezoelectric thin film layer, conductive layer；
The outside of the flexible battery core, which is wrapped up, sets the conductive layer on the outside of the piezoelectric thin film layer, piezoelectric thin film layer；
The two sides of the piezoelectric thin film layer is electrically connected with the flexible battery core and conductive layer respectively.
Further, the flexible electrical in-core is provided with the tensile cord arranged along the piezoelectric cable length direction；
The tensile cord includes tinsel or organic fiber line.
Further, the conductive layer outside wraps up the first wire netting.
Further, the conductive layer is the second wire netting.
Further, the cross section of the flexible battery core is circular.
Further, the flexible battery core is annular housing；
The column filler with the flexible battery core tight fit is socketed with the annular housing.
Further, the piezoelectric thin film layer includes piezoelectric membrane, and the piezoelectric membrane is spirally wrapped in described
In flexible battery core；
When the piezoelectric membrane winds the flexible battery core, by the flexible battery core and conductive layer dielectric separation.
Further, the conductive layer includes conductive strips, and the conductive strips are spirally wrapped in the piezoelectric membrane
On layer.
Further, the flexible battery core is made up of a kind of material in electric silica gel, conductive rubber and conductive sponge.
Further, the protective layer is made up of electro-insulating rubber or polyethylene.
Piezoelectric cable of the present utility model, its battery core is parcel piezoelectric membrane on the outside of conductive flexible battery core, flexible battery core
Layer, the outside parcel conductive layer of piezoelectric thin film layer, when external force acts on piezoelectric cable, flexible battery core is deformed, and is wrapped
Therefore tension variation can occur for the piezoelectric thin film layer being rolled in flexible battery core, so as to produce charge signal, its without in battery core and
The projection and depression being mutually twisted are set between conductive layer, so without special production technology, production is simple；Piezoelectric membrane without
Hanging to set, the damage to piezoelectric membrane after stress is smaller, improves service life.
Brief description of the drawings
Fig. 1 is the structural representation of the piezoelectric cable of the embodiment of the utility model one；
The structural representation of the cross section of the piezoelectric cable of Fig. 2 embodiments of the utility model one.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that specific embodiment described herein is not used to limit this only to explain the utility model
Utility model.
Reference picture 1, the utility model embodiment provides a kind of piezoelectric cable, and it includes：Protective layer 40, and it is arranged on institute
State the flexible battery core 10 of the inner side of protective layer 40, piezoelectric thin film layer 20, conductive layer 30；The outside parcel of the flexible battery core 10 is described
Piezoelectric thin film layer 20, the outside of piezoelectric thin film layer 20 sets the conductive layer 30；The two sides of the piezoelectric thin film layer 20 respectively with institute
State flexible battery core 10 and conductive layer 30 is electrically connected with.
Above-mentioned protective layer 40 is typically made up of organic materials such as electro-insulating rubber, polyethylene, such as the outer layer phase of common cable
Together, protection and insulating effect etc. are played to cable.
Above-mentioned flexible battery core 10 is typically made up of materials such as electric silica gel, conductive rubber, conductive sponges, its have deformation and
Conductive function.
Above-mentioned piezoelectric thin film layer 20, the structure being made up of piezoelectric membrane 21, it is closely wrapped in flexible battery core 10.Pressure
Conductive film 21 is piezoelectric polyvinylidene fluoride PVDF polymeric membranes, when pullling piezoelectric membrane 21, the upper and lower electrode table of piezoelectric membrane 20
An electric signal (electric charge or voltage) will be produced between face, the same deformation quantity for stretching or bending of the size of the electric signal is into just
Than.
Above-mentioned conductive layer 30 is to be arranged on one layer of conductive structure on the outside of piezoelectric thin layer, and its main function is to collect piezoelectricity
The electric charge that film layer 20 is produced.It can be wrapped on piezoelectric thin film layer 20 or coat for flexible conductive metal band
Conducting film on piezoelectric thin film layer 20, such as plates silverskin, can also be conductor wire for being attached on piezoelectric thin film layer 20 etc..
In the present embodiment, during the effect such as the lateral wall of above-mentioned piezoelectric cable is squeezed, piezoelectric membrane 21 will necessarily be along pressure
The radial direction of electrical cables acts power, so that flexible battery core 10 can be extruded, flexible battery core 10 can be deformed upon, so that its outside
The girth of wall changes, and is wrapped in tension force and the adjoint change of tensile force meeting that the piezoelectric membrane 21 outside it is born, so that
Obtain charge signal corresponding with pressure.The charge signal that piezoelectric membrane 21 is produced is transmitted by flexible battery core 10 and conductive layer 30
To the external detection equipment on piezoelectric cable head.
In one embodiment, the cross section of above-mentioned flexible battery core 10 is circular.It can be sent out when cable is squeezed
The deformation of raw ellipse trend, because the girth of the homalographic of positive round is most short, the change of oval trend can produce longer girth, from
And strong tension force and stretching are produced to the piezoelectric membrane 21 for being wrapped in outside, so that charge signal corresponding with pressure is obtained,
It has the characteristics of sensitivity is high.Uniform tension force and stretching action can be produced after the flexible battery core 10 of circular, stress in pressure
Thin film layer 20, the charge signal for producing piezoelectric thin film layer 20 is more smooth, convenient processing.In other embodiments, it is above-mentioned
The cross section of flexible battery core 10 can also be other shapes, such as square, equilateral triangle, regular hexagon.Wherein, flexible electrical is worked as
When the cross section of core 10 is regular polygon, its side number is more, and the charge signal for producing piezoelectric thin film layer 20 is just all the more sensitive.
In the present embodiment, the tensile cord arranged along the piezoelectric cable length direction is provided with above-mentioned flexible battery core 10
50.The effect of above-mentioned tensile cord 50 mainly improves the tensile strength of above-mentioned piezoelectric cable, to improve the use intensity of voltage cable,
Make its scope of application wider.Above-mentioned tensile cord 50 generally comprises tinsel or organic fiber line etc., such as wire, nylon yarn
Deng.
In the present embodiment, the above-mentioned outside of conductive layer 30 the first wire netting of parcel.First wire netting is same to increase piezoelectric electro
The intensity of cable.Moreover, it is also possible to play the effect of shielding, prevent other radiofrequency signals from interfering with the signal of piezoelectric cable collection.
Above-mentioned first wire netting can also be arranged on the inside of the protective layer 40.
In the present embodiment, above-mentioned conductive layer 30 is the second wire netting, and the second wire netting can both be collected piezoelectric membrane
The electric charge that layer 20 is produced, can also improve the intensity of piezoelectric cable.Second wire netting be generally copper wire, steel wire or iron wire establishment and
Into.
In the present embodiment, above-mentioned flexible battery core 10 is annular housing.Annular housing is the circular cavity of both ends open, is used
Family can add different fillers according to use environment in annular housing.Such as, in order to increase pliability and tensile strength,
Can in cavity filler wires rope etc.；If in order to reduce pliability, hard pole etc. can be filled in cavity.
In one embodiment, it is socketed with the cavity of above-mentioned flexible battery core 10 and the flexible tight fit of battery core 10
Column filler.Above-mentioned column filler can be circular organic fiber bar, or, circular metallic rod etc..Column is filled
Thing and the flexible tight fit of battery core 10, can improve the sensitivity of piezoelectric cable, and improve piezoelectric thin film layer 20 and flexible battery core
10 close contact.Such as, in process of production, piezoelectric thin film layer 20 is wrapped in the flexible battery core 10 of annular housing first
On, then the column filler that diameter is more than circle ring chamber internal diameter is inserted into cavity, the setting of column filler, Ke Yizhi
The flexible battery core 10 of support expands, so that the flexible contact between piezoelectric membrane 21 of battery core 10 is even closer.Such as, piezoelectric membrane
During 21 parcel flexibility battery core 10, space etc. is not produced because parcel is not close, after insertion column filler, then space can be filled out
It is full.
In the present embodiment, above-mentioned piezoelectric thin film layer 20 includes piezoelectric membrane 21, and the piezoelectric membrane 21 is spirally twined
It is wound in the flexible battery core 10；When the piezoelectric membrane 21 winds the flexible battery core 10, the flexible battery core 10 and it will lead
The dielectric separation of electric layer 30.The spiral of piezoelectric membrane 21 is closely wound the flexible battery core 10 of cable, and on the one hand flexible battery core 10 is adapted to
Standardized production, in addition, the piezoelectric membrane 21 of somewhat superposition spiral winding has good insulation effect, ensures piezoelectric cable
Effectiveness.In addition, spiral winding also helps piezoelectric cable to be not susceptible to showing for the cracking of piezoelectric thin film layer 20 when bending, pullling
As with more preferable adaptability.
In the present embodiment, above-mentioned conductive layer 30 includes conductive strips, and the conductive strips are spirally wrapped in the piezoelectricity
In film layer 20.Above-mentioned conductive strips can be metal tape etc., and it can bend.The conductive strips helical form wraps piezoelectric membrane
Layer 20, can conduct the charge signal of the generation of piezoelectric membrane 21, can also draw charge signal etc. in truncated position.
In one embodiment, flexible battery core 10 is electric silica gel, and heart position sets steel wire strand line to be formed wherein
Steel core, the diameter 2mm of the flexible battery core 10, steel core overall diameter 0.2mm.In production, electric silica gel and steel core are from cable machinery
In continuously extrude, constitute that flexible, tensile strength is very high, any surface finish, circular flexible battery core 10；In continuous outlet
Cable machinery on by comprehensive processes such as flexible battery core 10, piezoelectric membrane 21, conductive strips, protective layers 40, allow the spiral shell of piezoelectric membrane 21
The flexible formation of battery core 10 piezoelectric thin film layer 20 of shape tight is revolved, shape on the spiral helicine piezoelectric membrane 21 of conductive strips tight is allowed
Into conductive layer 30, then in the firm polyethylene protective layer 40 of the outside of conductive layer 30 increase, ultimately form overall diameter 3mm~4mm's
Piezoelectric cable.When this piezoelectric cable is squeezed, flexible battery core 10 can become oval from positive round, and the area of its cross section is not
Become, the girth of the flexible cross section of battery core 10 certainly will be caused elongated, so that the piezoelectric membrane 21 to being wrapped in the flexible outside of battery core 10
Tension force is formed, piezoelectric membrane 21 is stretched by planar square, obtain corresponding charge signal output.The piezoelectric electro of the present embodiment
Cable is adapted to the longer Continuous maching of length.The longer piezoelectric cable of length can be used for the safety devices such as fence, such as, fly
Above-mentioned piezoelectric cable is set on the fence on airport, as someone or thing touching piezoelectric cable, the outside inspection being connected with piezoelectric cable
Measurement equipment can both be detected, to carry out timely processing etc..
In another specific embodiment, hollow flexible battery core 10, the diameter of flexible battery core 10 are made of electric silica gel
10mm, hollow diameter 6mm.The hollow flexible battery core 10 is to cut to obtain by strip tubular stock；Then by piezoelectricity
The flexible battery core 10 of the helical form of film 21 or ring-type tight, allows conductive strips tight helical form or annular piezoelectric film 21,
The last hollow position insertion diameter in flexible battery core 10 exceedes the rigidity or flexible expansion thing of inflated diameter, allows the outer of flexible battery core
Diameter is increased, and the piezoelectric thin film layer 20 and conductive layer 30 of outside are wrapped in so as to tensioner, forms a bar-shaped pressure
Electrical cables.Equally, when this bar-shaped piezoelectric cable is pressurized, the section girth for also resulting in flexible battery core 10 is elongated, to parcel
Piezoelectric membrane 21 outside produces tension force, obtains corresponding charge signal, and this bar-shaped piezoelectric cable is adapted to short length
It is separately machined.The piezoelectric cable of short length can be used for various piezoelectric sensing fields, such as, be arranged in mattress, be formed
Gather the mattress of physiology signal；Or, one end of handrail elevator is disposed at, whether is had to experience on handrail elevator
People, when on elevator nobody when, elevator is slow or out of service, when someone sets foot on elevator, and piezoelectric cable can produce electric signal, control
Elevator processed normally operation etc..
The piezoelectric cable of the utility model embodiment, its battery core is conductive flexible battery core 10, and the flexible outside of battery core 10 is wrapped
Piezoelectric thin film layer 20 is wrapped up in, conductive layer 30, when external force acts on piezoelectric cable, flexible battery core are wrapped up in the outside of piezoelectric thin film layer 20
10 are deformed, and therefore tension variation can occur for the piezoelectric thin film layer 20 for being wrapped in the flexible outside of battery core 10, so as to produce
Transducing signal, it can carry out Continuous maching as processing common cable, without contraposition during processing, without in piezoelectric membrane
21 surfaces are also exposed in atmosphere with regard to the piezoelectric membrane 21 without part using concavo-convex structure, that is, improved pressure sensing
Sensitivity, also considerably increases the durability of piezoelectric cable.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
Equivalent structure or equivalent flow conversion that every utilization the utility model specification and accompanying drawing content are made, or directly or indirectly fortune
Used in other related technical fields, similarly it is included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of piezoelectric cable, it is characterised in that including：Protective layer, and be arranged on flexible battery core on the inside of the protective layer,
Piezoelectric thin film layer, conductive layer；
The outside of the flexible battery core, which is wrapped up, sets the conductive layer on the outside of the piezoelectric thin film layer, piezoelectric thin film layer；
The two sides of the piezoelectric thin film layer is electrically connected with the flexible battery core and conductive layer respectively.
2. piezoelectric cable according to claim 1, it is characterised in that the flexible electrical in-core is provided with along the piezoelectric electro
The tensile cord of cable length direction arrangement；
The tensile cord includes tinsel or organic fiber line.
3. piezoelectric cable according to claim 1, it is characterised in that the conductive layer outside wraps up the first wire netting.
4. piezoelectric cable according to claim 1, it is characterised in that the conductive layer is the second wire netting.
5. piezoelectric cable according to claim 1, it is characterised in that the cross section of the flexible battery core is circular.
6. piezoelectric cable according to claim 1, it is characterised in that the flexible battery core is annular housing；
The column filler with the flexible battery core tight fit is socketed with the annular housing.
7. the piezoelectric cable according to any one of claim 1-6, it is characterised in that the piezoelectric thin film layer includes piezoelectricity
Film, the piezoelectric membrane is spirally wrapped in the flexible battery core；
When the piezoelectric membrane winds the flexible battery core, by the flexible battery core and conductive layer dielectric separation.
8. the piezoelectric cable according to any one of claim 1-6, it is characterised in that the conductive layer includes conductive strips,
The conductive strips are spirally wrapped on the piezoelectric thin film layer.
9. the piezoelectric cable according to any one of claim 1-6, it is characterised in that the flexible battery core is by conductive silicon
A kind of material in glue, conductive rubber and conductive sponge is made.
10. the piezoelectric cable according to any one of claim 1-6, it is characterised in that the protective layer is by electro-insulating rubber
Or polyethylene is made.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621381661 | 2016-12-16 | ||
| CN2016213816614 | 2016-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206505740U true CN206505740U (en) | 2017-09-19 |
Family
ID=59840007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720074641.0U Active CN206505740U (en) | 2016-12-16 | 2017-01-19 | Piezoelectric cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206505740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133885A1 (en) * | 2016-12-16 | 2018-07-26 | 杨松 | Piezoelectric cable |
-
2017
- 2017-01-19 CN CN201720074641.0U patent/CN206505740U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133885A1 (en) * | 2016-12-16 | 2018-07-26 | 杨松 | Piezoelectric cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106683766B (en) | piezoelectric cable | |
| JPH053688B2 (en) | ||
| CN201242895Y (en) | Support strip for rubber sleeve cable | |
| CN101996706A (en) | Earphone cord and earphone with same | |
| JP6501958B1 (en) | Piezoelectric element | |
| CN101707069B (en) | Strand | |
| CN104051074B (en) | A kind of wind electric power generation cable and production technology | |
| CN206505740U (en) | Piezoelectric cable | |
| JP6540423B2 (en) | Pressure-sensitive sensor and method of manufacturing the same | |
| CN110845859A (en) | Formula and preparation process of functional shielding material cable material | |
| JP5821892B2 (en) | Multi-core cable and manufacturing method thereof | |
| JP7352549B2 (en) | Device and method for sensing underwater sound pressure | |
| CN201707962U (en) | Low-noise electrocardio-wire | |
| CN201417639Y (en) | Wire rope composite cable for suspension | |
| CN201319270Y (en) | Fan-shaped structure core cable | |
| CN203118530U (en) | Strengthening mining machinery cable | |
| CN210743666U (en) | Metal band shielding high-voltage power cable with tenon-and-mortise structure | |
| CN208673742U (en) | Domestic portable electric car charging connection cable | |
| CN105761835A (en) | Electrocardiogram machine medical wire used for noise reduction and manufacturing method thereof | |
| CN206506128U (en) | A kind of spring wire harness | |
| JP4810388B2 (en) | Twisted wire conductor and manufacturing method thereof | |
| CN204332475U (en) | A kind of multicore water repellent electric cable with wire core | |
| CN219534094U (en) | Light reel cable | |
| CN203826026U (en) | Electric wire | |
| CN203573731U (en) | Ethylene propylene rubber insulation and sheath control cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191008 Address after: 518000 Longquan Garden C10, People's North Road, Jinglong Community, Longhua Street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shi Ling Science and Technology Ltd. of Shenzhen Address before: 510000, room 126, 2107 Xin Xin Road, Yuexiu District temple, Guangdong, Guangzhou Patentee before: Yang Song |