CN206331786U - Integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod - Google Patents
Integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod Download PDFInfo
- Publication number
- CN206331786U CN206331786U CN201621458745.3U CN201621458745U CN206331786U CN 206331786 U CN206331786 U CN 206331786U CN 201621458745 U CN201621458745 U CN 201621458745U CN 206331786 U CN206331786 U CN 206331786U
- Authority
- CN
- China
- Prior art keywords
- inductive rod
- flexible pcb
- signal wire
- resistance
- piezoelectricity inductive
- 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
- Electrophonic Musical Instruments (AREA)
- Stringed Musical Instruments (AREA)
Abstract
The utility model discloses integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod, including internal layer and protective layer, protective layer is sheathed on outside internal layer；Internal layer includes piezoelectric electrode, signal wire, circuit module and plug, and piezoelectric electrode is a flexible PCB, and the flexible PCB applies copper face outwardly along long side doubling；Apply on copper face and be stained with a lamination conductive film；One end of flexible PCB and one end connection of signal wire, the other end of signal wire are connected by circuit module and plug.The utility model has the advantage of the advantage using PVDF piezoelectric membranes and the thickness of flexible PCB, effectively reduce the integral thickness of inductive rod, code groove and horse bone, which can completely dispense with processing, under guitar can install inductive rod, and reduction guitar installs the difficulty of sound pick-up, improves production efficiency.
Description
Technical field
The utility model is related to integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod.
Background technology
Now with wooden guitar piezoelectric type inductive rod be all by：The line of induction, connecting line, 2.5mm single channel headset plugs etc.
Three parts are formed by connecting with welding procedure, and in junction, easily to think that technique and problem of materials cause screen layer to have scarce for screen layer
Fall into, cause shielding incomplete, electromagnetic wave introduces signal path from shielding fault location.
Wherein, piezoelectricity inductive rod belongs to capacitive high impedance low current transmission property, and inferential impedance is close to infinity, and it is to week
The electromagnetic interference enclosed is very sensitive, and the requirement to screen layer is very high, is extremely difficult to preferable shield effectiveness.Simultaneously to wooden guitar pickup
The input impedance and shielding of device amplifying circuit propose there is very high requirement.Piezoelectric ceramics inductive rod thickness has 1.5-2mm high, circular
Winding PVDF inductive rod diameters have 1.5mm, can raise the height of guitar horse bone when installed in wooden guitar lower chord pillow, lead
Cause action undesirable.The contact area of the flat formula PVDF inductive rods of individual layer, PVDF piezoelectric film and electrode is limited, it is impossible to which output is closed
The sensing vibrations voltage of reason.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide integrated strip impedance transformer bilayer
PVDF piezoelectricity inductive rod, the undesirable technical problem of its effect that can solve piezoelectric type inductive rod in the prior art.
The purpose of this utility model is realized using following technical scheme：
Integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod, including internal layer and protective layer, protective layer are sheathed on
Outside internal layer；
Internal layer includes piezoelectric electrode, signal wire, circuit module and plug, and piezoelectric electrode is a flexible PCB, the flexibility
PCB applies copper face outwardly along long side doubling；Apply on copper face and be stained with a lamination conductive film；One end of flexible PCB and the one of signal wire
End connection, the other end of signal wire is connected by circuit module and plug.
Preferably, the circuit module includes FET Q1, resistance R1 and resistance R2, resistance R1 one end and field effect
Should pipe Q1 grid be connected with the other end of signal wire, FET Q1 source electrode and resistance R2 one end connect with plug
Connect, FET Q1 drain electrode and power supply connection, the resistance R1 other end and the resistance R2 other end are grounded.
Preferably, FET Q1 model is 2SK208.
Preferably, the junction of signal wire and flexible PCB is wrapped up by heat-shrinkable T bush and forms insulation.
Preferably, protective layer includes the screen layer and insulating barrier set gradually from outside to inside.
Preferably, screen layer is integrated mesh grid formula screen layer.
Preferably, the width of flexible PCB is 1.8mm, length is 200mm.
Preferably, the width of piezoelectric membrane is 1.8mm, length is 200mm, and thickness is 110um.
Compared with prior art, the beneficial effects of the utility model are：Utilize PVDF piezoelectric membranes and the thickness of flexible PCB
Advantage, effectively reducing code groove and horse bone under the integral thickness of inductive rod, guitar and can completely dispensing with processing to install
Upper inductive rod, reduction guitar installs the difficulty of sound pick-up, improves production efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of piezoelectricity inductive rod of the present utility model；
Fig. 2 is the structural representation of piezoelectric electrode of the present utility model；
Fig. 3 is the circuit diagram of circuit module of the present utility model；
Fig. 4 is the structural representation of signal wire of the present utility model.
In figure：00th, protective layer；01st, screen layer；02nd, insulating barrier；10th, piezoelectric electrode；11st, piezoelectric membrane；12nd, signal wire；
20th, shell；21st, circuit module；22nd, plug.
Embodiment
Below, with reference to accompanying drawing and embodiment, the utility model is described further：
Integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod, as shown in Fig. 1 to 2, including internal layer and protective layer
00, protective layer 00 is sheathed on outside internal layer.
Internal layer includes piezoelectric electrode 10, signal wire 12, circuit module 21 and the plug 22 being sequentially connected, and piezoelectric electrode 10 is
One width is 1.8mm, and length is the flexible PCB of 200mm individual layer, and the flexible PCB is along long side doubling, and the flexible PCB
Deposited copper face is outwardly；Apply and a lamination conductive film 11 is stained with copper face, the width of piezoelectric membrane 11 is 1.8mm, and length is 200mm, thick
Spend for 110um.
The junction of one end of one end of signal wire 12 and one end connection of flexible PCB, signal wire 12 and flexible PCB passes through
Heat-shrinkable T bush is wrapped up and forms insulation, a diameter of 1.5mm of heat-shrinkable T bush, and length is 8mm, and heat-shrinkable T bush is after heating
Shrink.
The other end of signal wire 12 is connected by circuit module 21 and plug 22；Circuit module 21 is as shown in figure 3, including field
Effect pipe Q1, resistance R1 and resistance R2, FET Q1 model are that 2SK208, resistance R1 resistance are 10M, resistance R2 resistance
It is worth for 2.2M；The other end of resistance R1 one end and FET Q1 grid with signal wire 12 is connected, FET Q1's
Source electrode and resistance R2 one end are connected with plug 22, FET Q1 drain electrode and power supply connection, the resistance R1 other end and
The resistance R2 other end is grounded.Common source amplifying circuit is made with FET Q1, the impedance conversion of common source amplifying circuit is utilized
Characteristic, is converted into the high impedance signal (10M Ω) of inductive rod to be not readily susceptible to the low-resistance antinoise signal (2.2K Ω) of interference, the electricity
Road module 21 can be by external power supply power taking, and circumpolar that can also be by FET Q1 drain electrode directly with plug 22 is connected,
So as to be used by taking out power supply from guitar Tone tester main frame for circuit module 21, and the sharp pole of plug 22 and FET Q1
Source electrode be connected, the sharp pole of plug 22 is transferred to the low impedance sense rod small-signal for passing through conversion as signalling channel
On sound pick-up main frame.Circuit module 21 is externally provided with shell 20.The plug is 2.5mm binary channels plugs.
As shown in figure 4, protective layer 00 includes the screen layer 01 and insulating barrier 02 set gradually from outside to inside；Screen layer 01 is
Integrated woven net formula screen layer.The peripheral diameter of protective layer 00 is 1.8mm, and the peripheral diameter of insulating barrier 02 is 1.3mm.
The utility model makes the mounting process of inductive rod simpler, utilizes 110um thickness PVDF piezoelectric membranes and 100um
The advantage of the thickness of flexible PCB, the thickness of actual induction part can be accomplished between 0.6mm-0.7mm, effectively reduce sense
Inductive rod can be installed by answering under the integral thickness of rod, guitar code groove and horse bone to completely dispense with processing, and reduction guitar is installed
The difficulty of sound pick-up, improves production efficiency.
And, improve the antijamming capability of inductive rod.Integrated woven net formula screen layer, solves segmentation welding screen layer
Technique destabilizing factor, reduce because segmented screen layer leakage signal problem, cause the chance of signal contamination.
And, increase output improves signal to noise ratio.Double-deck PVDF piezoelectric membranes sensing avoids the defeated of individual layer PVDF inductive rods
Go out the problem of signal is too small, be conducive to the machine-noise ratio (S/N) of guitar sound pick-up to improve.
Finally, using the integrated EFI common source impedance inverter circuit on inductive rod plug, make easily by external electromagnetic
The induced signal of the high impedance of interference becomes low-impedance induced signal, reduces the circuit design difficulty of sound pick-up main frame.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim
Within the scope of.
Claims (8)
1. integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod, it is characterised in that including internal layer and protective layer, protection
Layer is sheathed on outside internal layer；
Internal layer includes piezoelectric electrode, signal wire, circuit module and plug, and piezoelectric electrode is a flexible PCB, the flexible PCB edge
Long side doubling, and apply copper face outwardly；Apply on copper face and be stained with a lamination conductive film；One end of flexible PCB and one end of signal wire connect
Connect, the other end of signal wire is connected by circuit module and plug.
2. piezoelectricity inductive rod as claimed in claim 1, it is characterised in that the circuit module includes FET Q1, resistance
R1 and resistance R2, resistance R1 one end and FET Q1 grid are connected with the other end of signal wire, FET Q1's
Source electrode and resistance R2 one end are connected with plug, FET Q1 drain electrode and power supply connection, resistance the R1 other end and electricity
The resistance R2 other end is grounded.
3. piezoelectricity inductive rod as claimed in claim 2, it is characterised in that FET Q1 model is 2SK208.
4. piezoelectricity inductive rod as claimed in claim 1, it is characterised in that the junction of signal wire and flexible PCB passes through pyrocondensation
Sleeve pipe is wrapped up and forms insulation.
5. piezoelectricity inductive rod as claimed in claim 1, it is characterised in that protective layer includes the shielding set gradually from outside to inside
Layer and insulating barrier.
6. piezoelectricity inductive rod as claimed in claim 5, it is characterised in that screen layer is integrated mesh grid formula screen layer.
7. piezoelectricity inductive rod as claimed in claim 1, it is characterised in that the width of flexible PCB is 1.8mm, length is
200mm。
8. piezoelectricity inductive rod as claimed in claim 7, it is characterised in that the width of piezoelectric membrane is 1.8mm, length is
200mm, thickness is 110um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621458745.3U CN206331786U (en) | 2016-12-29 | 2016-12-29 | Integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621458745.3U CN206331786U (en) | 2016-12-29 | 2016-12-29 | Integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206331786U true CN206331786U (en) | 2017-07-14 |
Family
ID=59293066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621458745.3U Active CN206331786U (en) | 2016-12-29 | 2016-12-29 | Integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206331786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110783094A (en) * | 2019-10-14 | 2020-02-11 | 山东电力设备有限公司 | Method for welding external shielding wire of converter transformer |
-
2016
- 2016-12-29 CN CN201621458745.3U patent/CN206331786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110783094A (en) * | 2019-10-14 | 2020-02-11 | 山东电力设备有限公司 | Method for welding external shielding wire of converter transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2004091052A3 (en) | Method and apparatus for substantially reducing electrical displacement current flow between input and output circuits coupled to input and output windings of an energy transfer element | |
| CN206331786U (en) | Integrated strip impedance transformer bilayer PVDF piezoelectricity inductive rod | |
| CN205378057U (en) | Circuit arrangement who restraines audio signal transmission noise | |
| CN103278755B (en) | Sensor for partial discharge detection of XLPE power cable installation method | |
| CN205160786U (en) | Capacitive microphone | |
| CN214795164U (en) | Novel three PIN hall sensor | |
| CN204720577U (en) | A kind of high-performance minor structure N Connector | |
| CN102957398B (en) | The electric connector of filter circuit and utilization filter circuit | |
| CN208874698U (en) | A kind of microphone dedicated transistor core having π filtering suffix | |
| CN202549442U (en) | Conductor for overhead power transmission line | |
| CN207369291U (en) | A kind of improved horn wire and a kind of improved speaker | |
| CN205657919U (en) | Move indisputable unit PCB circuit board convenient to installation electric capacity | |
| CN206038780U (en) | Prevent high -pressure electric charge sensor | |
| CN200976296Y (en) | Connector wire | |
| CN203521031U (en) | Metallized thread for high-quality high-power loudspeaker box | |
| CN209105406U (en) | A kind of speaker | |
| CN205961571U (en) | Aluminium base board suitable for anti electromagnetic wave | |
| CN201479337U (en) | Low-noise microphone | |
| CN207969295U (en) | With anti-tampering smart home circuit board | |
| CN210432027U (en) | Full-transparent wire-free LED lamp strip circuit board assembly and flexible LED lamp strip | |
| CN202632778U (en) | Sound recording module in circuit of learning machine | |
| CN207353618U (en) | A kind of forceful electric power connecting line group | |
| CN207134249U (en) | A kind of long-life small electrolytic capacitor | |
| CN201860449U (en) | Capacitive microphone | |
| CN207733065U (en) | It is a kind of to facilitate fixed circuit printing plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |