CN1801404A - Polarization device and method of coaxial, flexible piezoelectric cable - Google Patents
Polarization device and method of coaxial, flexible piezoelectric cable Download PDFInfo
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- CN1801404A CN1801404A CNA2005101269389A CN200510126938A CN1801404A CN 1801404 A CN1801404 A CN 1801404A CN A2005101269389 A CNA2005101269389 A CN A2005101269389A CN 200510126938 A CN200510126938 A CN 200510126938A CN 1801404 A CN1801404 A CN 1801404A
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Abstract
A polarization apparatus is provided wherein a piezoelectric body tube 3 is wound around a first rotation drum 5 and a second rotation drum 6 and a coaxial flexible piezoelectric body 2 is polarized while the piezoelectric body tube 3 is wound. According to the polarization apparatus, polarization can be conducted except for the coaxial flexible piezoelectric body 2 of the portion containing a defect and a defect existing in the piezoelectric body tube 3 of a given length can also be detected be fore an outer electrode 4 is formed.
Description
The application is to be the dividing an application of No. 01138164.7 application for a patent for invention that is entitled as " polarization device of coaxial, flexible piezoelectric cable and polarization method " in December 15 calendar year 2001 the applying date.
Technical field
The present invention relates to the polarization of coaxial, flexible piezoelectric cable.
Background technology
Usually; as shown in Figure 5, coaxial, flexible piezoelectric cable comprises a piezoelectric body tube 3, and piezoelectric body tube 3 comprises a coaxial, flexible piezoelectric body 2 around core electrode 1 formation; at an external electrode 4 of piezoelectric body tube 3 outer surfaces formation and a protective finish (not shown) that forms around external electrode 4.
Up to now, flexible piezoelectric body cable polarizes in the following manner:
File 1 (" Atuden ceramic funmatu to gouseigomu tokaranaruatudenfukugouzairyou ", funntai to kougyou, 22kan, lgou, the 50-56 page or leaf) disclose: apply a high voltage between core electrode 1 and external electrode 4, coaxial, flexible composite piezoelectric body 2 is used to polarize.This also is disclosed in USP 4568851.Owing to the direction of the spontaneous polarization that makes ceramic particle is identical with the polarized electric field direction, piezoelectric property is endowed coaxial, flexible composite piezoelectric body 2.This with point on, polarization plays an important role.
In addition; coaxial, flexible piezoelectric cable comprises a piezoelectric body tube 203; piezoelectric body tube 203 comprises a coaxial, flexible piezoelectric body 202 around core electrode 201 formation; an external electrode 204 in the formation of piezoelectric body tube 203 outer surfaces; and a protective finish 205 that forms around external electrode 204, as shown in Figure 9.
In the method, when applying a high voltage between core electrode 401 and external electrode 404, if defectiveness such as micro-cracks or gap in the coaxial, flexible piezoelectric body 402 produce discharge at defect part, core electrode 401 and external electrode 404 are by short circuit.Therefore, can not between core electrode 401 and external electrode 404, apply high voltage, and the therefore feasible coaxial, flexible piezoelectric body 402 that can't polarize (hundreds of rice or longer usually).Owing to can't detect the existence of defective,, in other words,, produce become instability and output reduction up to the coaxial, flexible piezoelectric body cable of finishing outside the depolarization up between core electrode 401 and external electrode 404, applying a high voltage.
Therefore, the polarization method of flexible piezoelectric body cable is feasible below:
As shown in figure 17, this polarization device is feasible, wherein, piezoelectric body tube 403 comprises the coaxial, flexible piezoelectric body 402 that forms around core electrode 401, piezoelectric body tube 403 is configured on the block conductor 406, dc voltage generation device 409 is connected on block conductor 406 and the core electrode 401 by lead 408 and 481, is used to apply dc voltage.According to this polarization device, coaxial, flexible piezoelectric body 402 is configured on the block conductor 406, and therefore block conductor 406 is as external electrode 404.Therefore, can be applied to dc voltage between block conductor 406 and the core electrode 401, be configured in part coaxial, flexible piezoelectric body 402 on the block conductor 406 with polarization by dc voltage generation device 409.
Yet, when between core electrode 1 and external electrode 4, applying high voltage, if defectiveness such as micro-cracks or gap in the coaxial, flexible composite piezoelectric body 2 produce trickle discharge at this rejected region.This trickle discharge causes the material heat dehydration that forms the electric conducting material of core electrode 1 and external electrode 4 and form coaxial, flexible composite piezoelectric body 2 and divides, and makes core electrode 1 and external electrode 4 short circuits.Therefore, cause and can not between core electrode 1 and external electrode 4, apply high voltage, thus the coaxial, flexible composite piezoelectric body 2 that can not polarize (hundreds of rice or longer usually); This is a problem.
Owing to before high voltage puts on 4 of core electrode 1 and external electrodes, can't detect the defective of existence, in other words,, produce become instability and output and reduce up to the coaxial, flexible piezoelectric body cable of finishing outside the depolarization; This also is a problem.
In addition, method of the prior art comprises following problem: when applying high voltage between core electrode 201 and external electrode 204, if defectiveness such as micro-cracks or gap in the coaxial, flexible piezoelectric body 202 then produce trickle discharge at rejected region.This trickle discharge causes forming the dehydration of material heat and the division of coaxial, flexible piezoelectric body 202, makes core electrode 201 and external electrode 204 short circuits.Therefore, cause and can not between core electrode 201 and external electrode 204, apply high voltage, thus the coaxial, flexible piezoelectric body 202 that can not polarize (hundreds of rice or longer usually).
Owing to before high voltage puts on 204 of core electrode 201 and external electrodes, can't detect the defective of existence, in other words,, produce become instability and output and reduce up to the coaxial, flexible piezoelectric body cable of finishing outside the depolarization.
Also have, method of the prior art comprises following problem: when applying high voltage between core electrode 301 and external electrode 304, if defectiveness such as micro-cracks or gap in the coaxial, flexible piezoelectric body 302 produce trickle discharge at rejected region.This trickle discharge causes forming the dehydration of material heat and the division of coaxial, flexible piezoelectric body 302, makes core electrode 301 and external electrode 304 short circuits.Therefore, cause and can not between core electrode 301 and external electrode 304, apply high voltage, thus the coaxial, flexible piezoelectric body 302 that can not polarize (hundreds of rice or longer usually); This is a problem.
Owing to before high voltage puts on 304 of core electrode 301 and external electrodes, can't detect the defective of existence, in other words,, produce become instability and output and reduce up to the coaxial, flexible piezoelectric body cable of finishing outside the depolarization.
Also have in addition, method of the prior art comprises following problem:
If by dc voltage generation device 409 dc voltage is applied to block conductor 406 and core electrode 401, the power that electrostatic force produces attracts coaxial, flexible piezoelectric body 402 and block conductor 406 each other.Therefore,, between coaxial, flexible piezoelectric body 402 and block conductor 406, produce a frictional force, make it can mobile piezoelectric body tube 403 for mobile piezoelectric body tube 403.If can mobile piezoelectric body tube 403, need a very big power.
Summary of the invention
In order to address the above problem, according to the present invention, a kind of polarization device of coaxial, flexible piezoelectric cable is provided, comprise: have the first lead dish of a plurality of grooves, be used for contacting with coarse semi-circumference surface and on given direction, rotating around the piezoelectric body tube of the formation coaxial, flexible piezoelectric body of core electrode; The second lead dish, it is configured in the first lead dish back and has a plurality of grooves, be used for contact with the coarse semi-circumference of another of piezoelectric body tube surface, described piezoelectric body tube be meant form around heart electrode and along the coaxial, flexible piezoelectric body of assigned direction rotation; Wind, be configured in the second lead dish after, be used to twine piezoelectric body tube; Electric installation is used to be electrically connected the first lead dish and the second lead dish; And the device for generating voltage that is connected to electric installation and core electrode.
According to the present invention, the coaxial, flexible piezoelectric body contacts with the groove of the first lead dish and the groove of the second lead dish, thereby the first lead dish and the second lead dish are as external electrode.Therefore, by the voltage process units dc voltage is applied between the electric installation and core electrode that is electrically connected the first lead dish and the second lead dish, thereby the coaxial, flexible piezoelectric body that is configured in the first lead dish groove and second lead dish inside grooves branch can be polarized.
In order to address the above problem, according to the present invention, provide the polarization device of coaxial, flexible piezoelectric cable, comprise block conductor with piezoelectric body tube passage, this piezoelectric body tube comprises the coaxial, flexible piezoelectric body that forms around core electrode; Mobile device is configured in after the block conductor, is used for mobile piezoelectric body tube; With the dc voltage process units, be connected to block conductor and core electrode.
According to the present invention, the coaxial, flexible piezoelectric body contacts with block conductor, thereby block conductor is as external electrode.Therefore, dc voltage is applied between block conductor and the core electrode, thereby the coaxial, flexible piezoelectric body that is configured in the part on the block conductor can be polarized by the dc voltage process units.
In addition, the present invention attempts to solve the problems referred to above in the correlation technique, an object of the present invention is to provide a kind of polarization device and polarization method of coaxial, flexible piezoelectric body cable, make it can reduce the frictional force between piezoelectric body tube and the block conductor and move piezoelectric body tube by a less power.
In order to solve the problems referred to above in the correlation technique, in the polarization device of coaxial, flexible piezoelectric body cable of the present invention, block conductor has one by pit and convex to form the piezoelectric body tube channel part, with the resistance of reducing friction.Under the situation that pit and projection are arranged, can reduce the frictional force between piezoelectric body tube and the piezoelectric body tube channel part, can move piezoelectric body tube by a less power.
In the polarization device under first kind of situation, the coaxial, flexible piezoelectric body is configured in the first lead dish groove and the second lead dish groove, thereby the first lead dish, the second lead dish is as external electrode.Therefore, by the voltage process units dc voltage is applied between the electric installation and core electrode that is electrically connected the first lead dish and the second lead dish, can be polarized thereby only be configured in the coaxial, flexible piezoelectric body that the first lead dish groove and the second lead dish inside grooves divide (below be referred to as to polarize coaxial, flexible piezoelectric body).
When the part coaxial, flexible piezoelectric body that comprises trickle defective becomes the coaxial, flexible piezoelectric body of polarization,, make and between electric installation and core electrode, to apply high voltage because the discharge in the defect part makes core electrode and external electrode short circuit.But short circuit is partly left after the first lead dish and the second lead dish, and the coaxial, flexible piezoelectric body of polarization can normally be polarized once more.Therefore, if defect part exists, can not produce the fault of the feasible whole coaxial, flexible piezoelectric body that can't polarize.There is trickle defective in this explanation in the coaxial, flexible piezoelectric body of the polarization of given length, thereby can detect the trickle defective that is present in the given length scope before forming external electrode.
In the polarization device of second kind of situation, the first lead dish and the second lead dish rotate by the piezoelectric body tube that is wound the device winding.Therefore, the first lead dish and the second lead dish can rotate in the opposite direction synchronously, need not anyly be used to rotate the specific device of the first lead dish and the second lead dish.Owing to polarized during the coaxial, flexible piezoelectric body that polarizes is only in it is configured in the first lead dish groove and the second lead dish groove, thereby can control the polarization time by the speed of wrap of control wind.
Polarization device under the third situation also comprises tension applying apparatus except the assembly under the afore-mentioned, be used for applying tension force to piezoelectric body tube before piezoelectric body tube is configured on the first lead dish.Because applied given tension force to the coaxial, flexible piezoelectric body before the coaxial, flexible piezoelectric body is configured as the coaxial, flexible piezoelectric body that polarizes, the coaxial, flexible piezoelectric body of polarization can be configured to closely contact with the second lead dish groove with the first lead dish groove.
Polarization device under the 4th kind of situation also comprises electric discharge device except the assembly under the afore-mentioned, be used for the surface charge of removing piezoelectric body tube after piezoelectric body tube leaves the second lead dish.This surface charge that produces during the polarization is present in the coaxial, flexible piezoelectric surface of polarization, but is removed by electric discharge device.Therefore, for example, if human body parts contact coaxial, flexible piezoelectric surface, he or she can not shocked by electricity, thereby can guarantee work safety.
Polarization device under the 5th kind of situation also comprises capacitance detecting device except the assembly under the afore-mentioned, be used to detect the core electrode of piezoelectric body tube and the electric capacity between the electric installation.If the coaxial, flexible piezoelectric body of polarization and the groove and the tight contact performance between the second lead dish groove of the first lead dish are poor, for example, if the coaxial, flexible piezoelectric body floats on groove, electric capacity between core electrode and the electric installation reduces, thereby when dc voltage is applied in when being used to polarize, can monitor therebetween tight contact performance simultaneously therebetween by capacitance detecting device.
Polarization device under the 6th kind of situation also comprises the electric insulation baffle wall around the first lead dish and the second lead dish except the assembly under the afore-mentioned.When applying high dc voltage between electric installation that is being electrically connected the first lead dish and the second lead dish and the core electrode, the electric insulation baffle wall prevents that human body from contacting the first lead dish or the second lead dish, thereby can guarantee the safety of the work of polarizing.
In the polarization device under the 7th kind of situation, the electric insulation baffle wall under the 6th kind of situation is transparent.When the coaxial, flexible piezoelectric body is wound the device winding, and when between the core electrode of coaxial, flexible piezoelectric body and electric installation, applying dc voltage, can observe the moving of coaxial, flexible piezoelectric body of the rotation status of the first lead dish and the second lead dish and polarization.
Also comprise a hot air generator the assembly of polarization device under the 6th situation under the 8th kind of situation, be used for thermal air current is blown into the electric insulation baffle wall.Suitably control the temperature of hot-air, thereby can suitably control the temperature of the first lead dish and the second lead dish, thereby can under the temperature of needs, polarize the coaxial, flexible piezoelectric body.
In the polarization device under the 9th kind of situation, the first lead dish under the situation and the second lead dish are made by stainless steel as described above.When producing discharge in the defect part in the coaxial, flexible piezoelectric body of polarization, stainless thermal evaporation amount is very little, thereby can alleviate because of the destruction of discharge to the first lead dish and the second lead dish.
The 10th kind of situation according to the present invention, a kind of polarization method is provided, wherein, the coaxial, flexible piezoelectric body pipe of predetermined length disposes in the following manner: the step of configuration coaxial, flexible piezoelectric body pipe in a groove of the first lead dish, in a groove of the second lead dish, dispose the step of coaxial, flexible piezoelectric body pipe then, and in another groove of the first lead dish the step of configuration coaxial, flexible piezoelectric body pipe, above-mentioned steps is repeated, when coaxial, flexible piezoelectric body pipe was wound the device winding, dc voltage was applied between the heart yearn and electric installation of coaxial, flexible piezoelectric body pipe then.
When the coaxial, flexible piezoelectric body of polarization is configured in the groove of the first lead dish, the semi-circumference surface beginning of the coaxial, flexible piezoelectric body of polarization contacts with this groove, on the other hand, when the coaxial, flexible piezoelectric body of polarization was placed in the groove of the second lead dish, other semi-circumferences surface beginnings of the coaxial, flexible piezoelectric body of polarization contacted with this groove.Therefore, the coaxial, flexible piezoelectric body of polarization can be polarized on its whole circumference surface.
In the polarization method under the 11st kind of situation, under the polarization method of the 10th kind of situation, the core electrode of piezoelectric body tube is placed in earth potential, applies a dc voltage between core electrode and electric installation.
When applying a high dc voltage between electric installation that is being electrically connected the first lead dish and the second lead dish and the core electrode, can be limited to the first lead dish and the second lead dish to the adventurous high dc voltage part of human body, thereby baffle wall etc. can guarantee the safety of human body at an easy rate.
In the polarization method under the 12nd kind of situation, identical with the polarization method of the 11st kind of situation, coaxial, flexible piezoelectric body pipe comprises heart yearn and coaxial composite piezoelectric body, and coaxial composite piezoelectric body comprises vinyl chloride and piezoelectric ceramics body powder.Because this composite piezoelectric body high resilience, it can easily closely contact with the groove of the first lead dish and the groove of the second lead dish.
In the polarization device under the 13rd kind of situation, piezoelectric body tube is configured in the passage of block conductor, thereby block conductor is as external electrode.Therefore, high pressure is applied between block conductor and the core electrode, can be polarized thereby only be configured in block conductor channel coaxial, flexible piezoelectric body (the following coaxial, flexible piezoelectric body that will be called as polarization) interior and the part that block conductor recesses is interior.
When the coaxial, flexible piezoelectric body of the part that comprises trickle defective becomes the coaxial, flexible piezoelectric body of polarization, because core electrode that the discharge in the defect part causes and external electrode by short circuit, make and can not apply high voltage between electric installation and core electrode.Yet short circuit is partly left the coaxial, flexible piezoelectric body that polarizes after the block conductor and can normally be polarized once more.Therefore, if defect part exists, can not produce the fault of the feasible whole coaxial, flexible piezoelectric body that can't polarize.There is trickle defective in this explanation in the coaxial, flexible piezoelectric body of the polarization of given length, thereby can detect the trickle defective that is present in the given length scope before forming external electrode.
Also comprise heater the assembly of polarization device under the 13rd kind of situation under the 14th kind of situation, this heater has a heat block, and heat block comprises a heater, is used to heat block conductor, with the piezoelectric body tube of heater configuration on block conductor.Therefore, can control the temperature of piezoelectric body tube, thereby the coaxial, flexible piezoelectric body can be polarized under the temperature of needs.
In the polarization device under the 15th kind of situation, on the surface of passage at block conductor of piezoelectric body tube under the 13rd kind of situation.Because block conductor does not need to form the passage of piezoelectric body tube, has simplified the work on block conductor.Because piezoelectric body tube does not need to be arranged in any groove or any hole of block conductor, therefore can more easily dispose piezoelectric body tube.
Also comprise a resistor of connecting the assembly of polarization device under the 13rd to 15 any situation under the 16th kind of situation with piezoelectric body tube.When the coaxial, flexible piezoelectric body that comprises trickle defect part becomes the coaxial, flexible piezoelectric body of polarization, be applied to the voltage reduction on the coaxial, flexible piezoelectric body and it can not be polarized.But, because can Control current by suitable resistor, prevented destruction to the dc voltage generation device.The defect part of coaxial, flexible piezoelectric body leaves the coaxial, flexible piezoelectric body that polarizes after the block conductor and can normally be polarized once more.Therefore, if defect part exists, can not produce the fault of the feasible whole coaxial, flexible piezoelectric body that can't polarize.There is trickle defective in this explanation in the coaxial, flexible piezoelectric body of the polarization of given length, thereby can detect the trickle defective that is present in the given length scope before forming external electrode.
The 17th kind of situation according to the present invention, a kind of polarization method is provided, comprise step: at first piezoelectric body tube is configured in the passage in the block conductor, then when piezoelectric body tube stops or being moved device and moving, between the heart yearn of piezoelectric body tube and block conductor, applies dc voltage.Therefore, block conductor is as an external electrode, thereby high voltage is applied between block conductor and the core electrode, can be polarized thereby only be configured in block conductor recesses coaxial, flexible piezoelectric the body interior and part that block conductor channel is interior.
The control piezoelectric body tube stops the translational speed with traveling time or piezoelectric body tube, thereby can polarize the coaxial, flexible piezoelectric body in the time of needs.
In the 18th kind of situation of the present invention, under the polarization method of the 17th kind of situation, when the heat block that comprises a heater heated block conductor with the piezoelectric body tube of heater configuration on block conductor, a dc voltage was applied between the heart yearn and block conductor of piezoelectric body tube.Owing to can control the temperature of piezoelectric body tube, so the coaxial, flexible piezoelectric body that can under the temperature of needs, polarize.
In the polarization method under the 19th kind of situation, as the 17th or the polarization method of 18 kind of situation under, the heart yearn of piezoelectric body tube is placed in earth potential, dc voltage is applied between heart yearn and the block conductor.When between block conductor and core electrode, applying a high dc voltage, can be limited to block conductor to the adventurous high dc voltage part of human body, thereby baffle wall etc. can easily guarantee the safety of human body.
In the polarization device under the 20th kind of situation, a groove is set as the passage of the 13rd kind of situation lower piezoelectric body pipe.Because being positioned at the passage of block conductor is groove, the top is opened, and piezoelectric body tube can easily be placed from groove top.
In the polarization device under the 21st kind of situation,, also on the groove of piezoelectric body tube passage, place a lid except the assembly under the 20th kind of situation.When block conductor was heated with the piezoelectric body tube of heater configuration on block conductor, described lid prevented that heat from distributing from groove top.Therefore, the temperature of piezoelectric body tube can be controlled, thereby the coaxial, flexible piezoelectric body can be under the temperature of needs, polarized.
In the polarization device under the 22nd kind of situation, a hole is set as the piezoelectric body tube passage under the 13rd kind of situation.When block conductor is heated with the piezoelectric body tube of heater configuration on block conductor, be placed on piezoelectric body tube in the hole by from evenly heating on every side.Therefore, the temperature of piezoelectric body tube can be controlled, thereby the coaxial, flexible piezoelectric body can be under the temperature of needs, polarized.
Also comprise a resistor of connecting the assembly of polarization device under the 13rd, 14 and 20 to 22 any situations under the 23rd kind of situation with piezoelectric body tube.When the coaxial, flexible piezoelectric body that comprises trickle defect part becomes the coaxial, flexible piezoelectric body of polarization, be applied to the voltage reduction on the coaxial, flexible piezoelectric body and it can not be polarized.But, because can Control current by suitable resistor, prevented destruction to the dc voltage generation device.The defect part of coaxial, flexible piezoelectric body leaves the coaxial, flexible piezoelectric body that polarizes after the block conductor and can normally be polarized once more.Therefore, if defect part exists, can not produce the fault of the feasible whole coaxial, flexible piezoelectric body that can't polarize.There is trickle defective in this explanation in the coaxial, flexible piezoelectric body of the polarization of given length, thereby can detect the trickle defective that is present in the given length scope before forming external electrode.
The 24th kind of situation according to the present invention, a kind of polarization method is provided, comprise step: at first piezoelectric body tube is configured in the passage in the block conductor, then when piezoelectric body tube stops or being moved device and moving, between the heart yearn of piezoelectric body tube and block conductor, applies dc voltage.Therefore, block conductor is as an external electrode, thereby high voltage is applied between block conductor and the core electrode, can be polarized thereby only be configured in block conductor recesses coaxial, flexible piezoelectric the body interior and part that block conductor channel is interior.
The control piezoelectric body tube stops the translational speed with traveling time or piezoelectric body tube, thereby can polarize the coaxial, flexible piezoelectric body in the time of needs.
In the 25th kind of situation of the present invention, under the polarization method of the 24th kind of situation, when the heat block that comprises a heater heated block conductor with the piezoelectric body tube of heater configuration on block conductor, a dc voltage was applied between the heart yearn and block conductor of piezoelectric body tube.Owing to can control the temperature of piezoelectric body tube, so the coaxial, flexible piezoelectric body that can under the temperature of needs, polarize.
In the polarization method under the 26th kind of situation, as the polarization method of 24 or 25 situations under, the heart yearn of piezoelectric body tube is placed in earth potential, dc voltage is applied between heart yearn and the block conductor.When between block conductor and core electrode, applying a high dc voltage, can be limited to block conductor to the adventurous high dc voltage part of human body, thereby baffle wall etc. can easily guarantee the safety of human body.
The 27th kind of situation according to the present invention, a kind of polarization device of coaxial, flexible piezoelectric body cable is provided, comprise a block conductor with piezoelectric body tube channel part, the piezoelectric body tube channel part comprises a coaxial, flexible piezoelectric body around core electrode formation, this channel part is made into rough and uneven in surface, as pit and projection; The dc voltage generation device is connected to block conductor and core electrode.Piezoelectric body tube is configured in the channel part of block conductor, thereby block conductor is as external electrode.Therefore, high pressure is applied between block conductor and the core electrode, thereby the coaxial, flexible piezoelectric body that is disposed at the part in the block conductor can be polarized.The piezoelectric body tube channel part of block conductor is made into rough and uneven in surface, as pit and projection.For mobile piezoelectric body tube, under the situation that pit and projection occur, can reduce the frictional force between piezoelectric body tube and the piezoelectric body tube channel part, can move piezoelectric body tube by very little power.
In the polarization device of the 28th kind of situation, also be provided with block conductor the assembly under the 27th kind of situation.Block conductor is heated by heater, thereby heating is placed on the piezoelectric body tube in the block conductor, and can control the temperature of piezoelectric body tube, thereby can polarize the coaxial, flexible piezoelectric body under the temperature of needs.
Polarization device under the 29th kind of situation be the 27th or 28 kind of situation under the polarization device of coaxial, flexible piezoelectric body cable, wherein wire screen is set on the block conductor so that the piezoelectric body tube passage to be provided.Wire netting is used to form pit and projection, thereby can reduce the frictional force between piezoelectric body tube and the piezoelectric body tube channel part, and can enough very little power moves piezoelectric body tube and need not form configuration surface such as the pit and the projection of piezoelectric body tube.
Polarization device under the 30th kind of situation be the 27th or 28 kind of situation under the polarization device of coaxial, flexible piezoelectric body cable, wherein block conductor is formed with groove, groove is formed with pit and projection, and piezoelectric body tube is placed in the groove that is formed with pit and projection.If block conductor is heated, place the piezoelectric body tube in the block conductor recesses to be heated by bottom and wall from groove.Therefore, piezoelectric body tube is heated more equably, thereby can polarize the coaxial, flexible piezoelectric body under the temperature of needs.The top is opened and can easily places piezoelectric body tube 403 from groove top.
Polarization device under the 31st kind of situation be the 27th or 28 kind of situation under the polarization device of coaxial, flexible piezoelectric body cable, wherein block conductor is formed with groove, groove is provided with wire screen, and piezoelectric body tube is placed in the groove that wire screen is arranged on it.Piezoelectric body tube is set in the groove, and groove is provided with wire screen, and formation contacts each other thereby piezoelectric body tube is with wire screen.Therefore, can reduce the frictional force between piezoelectric body tube and the piezoelectric body tube configuration plane, and can enough very little power move piezoelectric body tube.
The 31st kind of situation provides a kind of polarization method according to the present invention, comprises step: piezoelectric body tube is configured in the channel part of block conductor, and applies a dc voltage between the heart yearn of piezoelectric body tube and block conductor.Therefore, block conductor is as an external electrode, thereby high voltage is applied between block conductor and the core electrode, can be polarized thereby be configured in block conductor coaxial, flexible piezoelectric the body interior and part that block conductor channel is interior.Make the piezoelectric body tube channel part of block conductor uneven, resemble pit and projection, to reduce frictional resistance.Under the situation that pit and projection are arranged, piezoelectric body tube forms with the piezoelectric body tube channel part and contacts each other.Therefore, can reduce the frictional force between piezoelectric body tube and the piezoelectric body tube placed side, can move piezoelectric body tube by very little power.Piezoelectric body tube stops the translational speed Be Controlled with traveling time or piezoelectric body tube, thereby can polarize the coaxial, flexible piezoelectric body in the time of needs.
Under the 33rd kind of situation of the present invention, as the polarization method of the 32nd kind of situation in, when the heat block that comprises heater heated block conductor and is placed on piezoelectric body tube on the block conductor with heating, a dc voltage was applied between the heart yearn and block conductor of piezoelectric body tube.Because the temperature of piezoelectric body tube can Be Controlled, thereby can polarize the coaxial, flexible piezoelectric body under the temperature of needs.
Description of drawings
Fig. 1 shows the schematic diagram of the structure of the polarization device of coaxial, flexible piezoelectric body cable in the embodiment of the invention 1;
Fig. 2 shows the schematic diagram of the piezoelectric body tube in the embodiment of the invention 1;
Fig. 3 shows the schematic diagram of the structure of the polarization device of coaxial, flexible piezoelectric body cable in the embodiment of the invention 2;
Fig. 4 shows the schematic diagram of the structure of the polarization device of coaxial, flexible piezoelectric body cable in the embodiment of the invention 3;
Fig. 5 shows the perspective view of the structure of coaxial, flexible piezoelectric element of the prior art;
Fig. 6 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 4;
Fig. 7 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 5;
Fig. 8 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 6;
Fig. 9 shows the schematic diagram of the structure of coaxial, flexible piezoelectric element of the prior art;
Figure 10 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 7;
Figure 11 A shows the schematic diagram of a structure of the polarization device in the embodiment of the invention 8, Figure 11 B shows the schematic diagram of another structure of the polarization device in the embodiment of the invention 8, and Figure 11 C shows the schematic diagram of another structure of the polarization device in the embodiment of the invention 8;
Figure 12 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 9;
Figure 13 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 10;
Figure 14 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 11;
Figure 15 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 12;
Figure 16 shows the schematic diagram of the structure of the polarization device in the embodiment of the invention 13;
Figure 17 shows the schematic diagram of the structure of the polarization device in the coaxial, flexible piezoelectric body cable in the prior art.
Embodiment
With reference to accompanying drawing, show the preferred embodiments of the present invention.
(embodiment 1)
Fig. 1 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device in the embodiment of the invention 1.Flexible piezoelectric body 2 forms on the core electrode 1 (below, this molding is called as piezoelectric body tube 3) coaxially.Coiled type metal wire, a branch of fine rule or analog are used as core electrode 1.As flexible piezoelectric body 2 be to comprise powder and the synthetic piezoelectrics that add the polymeric based material of epoxy resin, polyurethane resin, chloroprene resin, chlorination alkyd resin etc. to of zirconates-lead titanates piezoelectric ceramics bodies such as (zirconate-lead titanate), and polymerization piezoelectrics or the analog of PVDF etc.
Piezoelectric body tube 3 is wrapped in by the groove of first going barrel 5, that have a plurality of grooves 51, the column first lead dish 5 ends hereinafter referred to as, then be wrapped in by the groove of the end of second going barrel 6, that have a plurality of grooves 61, the column second lead dish 6 hereinafter referred to as, also twine around the groove that closes on first going barrel, 5 ends.Repeat these steps, piezoelectric body tube 3 is wound onto predetermined length, is wrapped in then on the reel 8.In Fig. 1, represent by black solid line that around the piezoelectric body tube 3 of windings such as first going barrel 5, second going barrel 6, reel 8 winding direction is represented by arrow.Fig. 2 is the schematic diagram that amplifies, and shows piezoelectric body tube 3.Semi-circumference surface 21 of coaxial, flexible piezoelectric body 2 contact with the groove of first going barrel 5, and keeps the semi-circumference surperficial 22 of coaxial, flexible piezoelectric body 2 to contact with the groove of second going barrel 6, thus winding piezoelectric body tube 3.First going barrel 5 and second going barrel 6 are electrically connected by electric installation 7.Electric installation 7 is electrically connected to the negative or positive electrode of dc voltage generation device 10 by lead 9a, and core electrode 1 is electrically connected to the opposite electrode of dc voltage generation device 10 by lead 9b.
When these parts connect by this way and reel 8 rotation when twining piezoelectric body tube 3, between the core electrode 1 and first going barrel 5, apply a high voltage by dc voltage generation device 10, thereby the coaxial, flexible piezoelectric body 2 of semi-circumference surface 21 parts is polarized.Equally, high voltage also is applied between the core electrode 1 and second going barrel 6, thereby the coaxial, flexible piezoelectric body 2 of semi-circumference surface 22 parts is polarized.Therefore, coaxial, flexible piezoelectric body 2 is polarized on its whole circumference surface, and at this therebetween, twine around first going barrel 5 and second going barrel 6 on semi-circumference surface 21 and semi-circumference surface 22.In the polarization time, the high voltage of (5 to 10) KV/mm is applied between core electrode 1 and first going barrel 5 and second going barrel 6.
This part that comprises trickle defective and comprise defective when coaxial, flexible piezoelectric body 2 is when first going barrel 5 and second going barrel 6 twine, the trickle discharge that produces at defect part makes core electrode 1 and first going barrel 5 or the 6 heat dehydrations of second going barrel, causes first going barrel 5 or second going barrel 6 and core electrode 1 short circuit.Therefore, can not polarize.But, if defect part is positioned at second going barrel 6 and the coaxial, flexible piezoelectric body that twines around first going barrel 5 and second going barrel 6 does not comprise any defective 2 this moments, insulation property between first going barrel 5 or second going barrel 6 and the core electrode 1 are recovered, thereby can polarize.
Therefore, according to the polarization device of present embodiment, only when twining first going barrel 5 and second going barrel 6, defect part just can not polarize comprising; Otherwise, can polarize.Therefore, can not be created in impossible all faults of polarized piezoelectric body pipes 3 when defect part occurring.Obviously defective is present in coaxial, flexible piezoelectric body 2 interior these points at that time when the generation discharge of polarization.Therefore, before forming external electrode 4, can detect the defective that is present in the given length piezoelectric body tube 3, thereby after forming piezoelectric cable, can easily remove defect part.Thereby, stable production can be carried out and output can be improved.
When the semi-circumference of coaxial, flexible piezoelectric body 2 surface 21 contacts with first going barrel 5, and when all the other semi-circumference surfaces 22 of coaxial, flexible piezoelectric body 2 contacted with winding piezoelectric body tube 3 with the groove of second going barrel 6, first going barrel 5 needed in the opposite direction with identical rotating speed rotation with second going barrel 6.For this purpose, first going barrel 5 and second going barrel 6 can be by motor driven separately, it is desirable to that first going barrel 5 and second going barrel 6 are driven by the tension force that is created in the piezoelectric body tube 3 when piezoelectric body tube 3 is wrapped on the reel 8.Thereby first going barrel 5 can be easily in the opposite direction with identical rotating speed rotation with second going barrel 6.
(embodiment 2)
Fig. 3 shows the schematic diagram of structure of the coaxial, flexible piezoelectric body polarization device of the embodiment of the invention 2.
When piezoelectric body tube 3 twines by reel 8, it is desirable to before piezoelectric body tube 3 twines first going barrel 5, tension force is applied to piezoelectric body tube 3 by tension applying apparatus 11, because when semi-circumference surperficial 21 of coaxial, flexible piezoelectric body 2 contacted with the groove of first going barrel 5, the tight contact performance between them improved.When tight contact performance difference, for example, when there being air layer between them, if high voltage is applied between first going barrel 5 and the core electrode 1, the actual effective voltage that is applied to coaxial, flexible piezoelectric body 2 reduces and therefore can not effectively polarize.This situation is equally applicable to other semi-circumference surfaces 22 of coaxial, flexible piezoelectric body 2.
Tension applying apparatus 11 can be used as this structure: thereby place two rotary bodies piezoelectric body tube 3 is clipped in the middle, suitably selects two distances between the rotary body, thereby control the physical resistance that applies when piezoelectric body tube 3 passes two spaces between the rotary body.
(embodiment 3)
Fig. 4 is a schematic diagram, shows the structure of the coaxial, flexible piezoelectric body polarization device of the embodiment of the invention 3.
After coaxial, flexible piezoelectric body 2 was polarized, electric charge remained on the external peripheral surface of core electrode 1 and coaxial, flexible piezoelectric body 2 (semi-circumference surface 21 and other semi-circumference surfaces 22).When human body contacted residual electric charge, residual charge was by the human body discharge and may produce danger.Safety in order to ensure polarization work it is desirable to be provided with an electric discharge device 12, is used to remove the residual charge after piezoelectric body tube 3 leaves second going barrel 6.
By the outer circumference surface of core electrode 1 and coaxial, flexible piezoelectric body 2 is placed under the identical in fact electromotive force, can remove residual charge.Therefore, electric discharge device 12 may have for example such structure: piezoelectric body tube 3 passes conducting liquid such as the running water that is connected to core electrode 1.The structure of twining first going barrel 5 and second going barrel 6 with piezoelectric body tube 3 is identical, and piezoelectric body tube 3 may twine the conduction going barrel that is used to discharge, and the conduction going barrel that this is used to discharge may be connected to core electrode 1.
In order to guarantee the safety of the work of polarizing, also comprise the discharge of residual charge, it is desirable to, first going barrel 5 and second going barrel 6 should be connected to the negative or positive electrode of high dc voltage, and core electrode 1 should ground connection.High voltage component is limited to first going barrel 5, second going barrel 6, electric installation 7, lead 9a and similar device, therefore has only these parts and exterior insulation, thereby can reduce the possibility that human body contacts any high voltage component at an easy rate.When residual charge was discharged, the conduction going barrel that is used to discharge may be maintained at earth potential, therefore without any danger.On the other hand, if core electrode 1 is connected to the negative or positive electrode of dc voltage generation device 10, core electrode 1 is maintained at a high voltage, thereby high voltage component is present in the whole polarization device.Therefore, increased the possibility that human body contacts any high voltage component.
To be applied in high-tension first going barrel 5 and second going barrel 6 and the exterior insulation in order making, to have it is desirable to, the electric insulation baffle wall will be set at around first going barrel 5 and second going barrel 6.Thereby, can prevent easily that human body from contacting this part.Ideal situation also has, and baffle wall should be transparent.Because the motion state of piezoelectric body tube 3 is visual, comprises the top of first going barrel 5 and second going barrel 6, can check constantly therefore whether piezoelectric body tube 3 correctly is placed in the groove of the groove of first going barrel 5 or second going barrel 6.
Temperature when the temperature when coaxial, flexible piezoelectric body 2 is polarized is used usually above coaxial, flexible piezoelectric body 2.From this point, in order suitably to keep temperature, it is desirable in the polarization time, the stream of warm air that controls to suitable temperature should be blown into baffle wall.Stream of warm air itself is fine slider, can make first going barrel 5 and second going barrel 6 remain on suitable temperature and do not damage the electrical insulation capability of first going barrel 5 and second going barrel 6, thereby can under any desirable temperature, polarize coaxial, flexible piezoelectric body 2.
It is desirable to, between core electrode 1 and first going barrel 5 and second going barrel 6, apply high voltage with polarization coaxial, flexible piezoelectric body 2 in, the electric capacity between the core electrode 1 and first going barrel 5 and second going barrel 6 should be monitored.When coaxial, flexible piezoelectric body 2 was polarized, the high voltage that becomes a constant electric field strength (per unit thickness voltage) was applied in, with the thickness of response coaxial, flexible piezoelectric body 2.Thereby the thickness of coaxial, flexible piezoelectric body 2 preferably is monitored.Because electric capacity depends on the thickness of coaxial, flexible piezoelectric body 2 and with respect to the degree of eccentricity of core electrode 1, so electric capacity can be monitored the localised waving with detection thickness.
Because first going barrel 5 and second going barrel 6 conduct electricity, coaxial, flexible piezoelectric body 2 can be polarized.But when when defect part produces trickle discharge, not only the core electrode 1 but also first going barrel 5 and second going barrel 6 are all dewatered by heat.The heat dehydration easily of low-melting material such as aluminium.On the contrary, stainless steel has high-melting-point and very difficult heat dehydration, and has outstanding physical strength and therefore be difficult to destruction during operation, etc.Consider these situations, first going barrel 5 and second going barrel 6 are preferably made by stainless steel.
Though various as mentioned above materials can be used as coaxial, flexible piezoelectric body 2, function admirable be the piezoelectric ceramics body that comprises zirconates-lead titanates powder such as (zirconate-lead titanate), the synthetic piezoelectrics that add rubber-based resin (rubber-based resin) to.Polyester chloride resin or chloroprene resin are as the rubber-based resin.Because this synthetic piezoelectrics high resilience, coaxial, flexible piezoelectric body 2 is easy to form tight the contact with the groove of first going barrel 5 and second going barrel 6.
(embodiment 4)
Fig. 6 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device in the embodiment of the invention 4.Coaxial, flexible piezoelectric body 202 is formed on the core electrode 201 (below, this molding will be called as piezoelectric body tube 203).The coiled type metal wire, a branch of fine rule or class liny are used as core electrode 201.As coaxial, flexible piezoelectric body 202 be to comprise powder and the synthetic piezoelectrics that add the polymeric based material of epoxy resin, polyurethane resin, chloroprene resin, chlorination alkyd resin etc. to of zirconates-lead titanates piezoelectric ceramics bodies such as (zirconate-lead titanate), and polymerization piezoelectrics or the analog of PVDF etc.
Temperature when the temperature when coaxial, flexible piezoelectric body 202 is polarized is used usually above coaxial, flexible piezoelectric body 202.Therefore, in order when polarizing, suitably to keep the temperature of coaxial, flexible piezoelectric body 202, heater is set.For heater, comprise that the heat block 271 of heater 207 is used in any desirable temperature by the block conductor 206 of an insulating trip 272 heating.In this embodiment, for insulating trip 272, the mica of used thickness 0.5mm, but also can use polyimides, polytetrafluoroethylene, PETG (PET), silicon rubber etc.Piezoelectric body tube 203 is placed on block conductor 206 surfaces, thereby can be heated from piezoelectric body tube 203 bottoms indirectly.Because the output by control heater 207 can remain on any desirable temperature to piezoelectric body tube 203, therefore can be at the temperature polarization coaxial, flexible piezoelectric body 202 of needs.
When piezoelectric body tube 203 by the part stationary that so connects or when mobile, apply a high voltage by dc voltage generation device 209 at core electrode 201 and block conductor 206, thereby coaxial, flexible piezoelectric body 202 is polarized.When polarization, between core electrode 201 and block conductor 206, apply 5 to 10KV/mm high voltage.Specifically, polarize 120 ℃ temperature and when applying the voltage of 8KV/mm by piezoelectric body tube 203.
When coaxial, flexible piezoelectric body 202 comprises a trickle defective, and the part that comprises this trickle defective is placed on the block conductor 206, and the trickle discharge that produces in defect part makes block conductor 206 and core electrode 201 by short circuit.Therefore can not polarize.But if defect part leaves block conductor 206, and this moment, the coaxial, flexible piezoelectric body 202 that is placed on the block conductor 206 did not comprise any defective, and the insulation property between block conductor 206 and the core electrode 201 are recovered, thereby can polarize.Therefore, according to the polarization device of present embodiment, only when being placed on block conductor 206 surfaces, the part that comprises defective can not polarize; Otherwise, can polarize.Therefore, under the situation that defect part do not occur, can not produce the fault of the feasible whole piezoelectric body tube 203 that can't polarize.Defective when obviously discharge taking place in the coaxial, flexible piezoelectric body 202 is present in this point.Therefore, can before forming external electrode 204, detect the defective that is present in the given length piezoelectric body tube 203, thereby after forming piezoelectric cable, can easily remove this defect part.Thereby, can stably make and can improve.
(embodiment 5)
Fig. 7 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device in the embodiment of the invention 5.The difference of embodiment 5 and embodiment 4 is to be provided with covers 210.Lid 210 is provided with a gap and is used to allow piezoelectric body tube 203 to move, and lid 210 is angled, and the cross section is a U-shaped.Piezoelectric body tube 203 is placed on the upper surface of block conductor 206, thereby is directly heated from the bottom of piezoelectric body tube 203.In addition, piezoelectric body tube 203 tegmentums 210 cover, thereby keep more uniform temperature, and coaxial, flexible piezoelectric body 202 can be polarized under the temperature of needs.For lid 210, can use common heat-barrier material (mineral wool, ceramic fibre etc.), heat stable resin, metal (iron, stainless steel, copper, brass, aluminium etc.) or similar material.In this embodiment, use the aluminium extrusion material.
(embodiment 6)
Fig. 8 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device in the embodiment of the invention 6.The structure of the coaxial, flexible piezoelectric body polarization device in embodiment 4 or 5, coaxial, flexible piezoelectric body polarization device also comprises the resistor 211 of connecting with piezoelectric body tube 203 among the embodiment 6.When the coaxial, flexible piezoelectric body 202 that comprises trickle defect part became the coaxial, flexible piezoelectric body 202 of polarization, the voltage that is applied to coaxial, flexible piezoelectric body 202 reduced, and made and can not polarize.But, because can Control current, have prevented destruction, and can normally have been polarized once more at the coaxial, flexible piezoelectric body 202 that the defect part of coaxial, flexible piezoelectric body 202 leaves block conductor 206 after-polarizations to the dc voltage generation device by resistor 211.Therefore, if there is defect part, can not produce the fault of the feasible whole coaxial, flexible piezoelectric body 202 that can't polarize.There is trickle defective in this explanation in coaxial, flexible piezoelectric body 202 parts of the polarization of given length, thereby can detect the trickle defective in the scope that is present in given length before forming external electrode 204.
(embodiment 7)
Figure 10 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device in the first embodiment of the invention.Coaxial, flexible piezoelectric body 302 is formed on the core electrode 301 (below, this molding will be called as piezoelectric body tube 303).The coiled type metal wire, a branch of fine rule or class liny are used as core electrode 301.As coaxial, flexible piezoelectric body 302 be to comprise powder and the synthetic piezoelectrics that add the polymeric based material of epoxy resin, polyurethane resin, chloroprene resin, chlorination alkyd resin etc. to of zirconates-lead titanates piezoelectric ceramics bodies such as (zirconate-lead titanate), and polymerization piezoelectrics or the analog of PVDF etc.
Temperature when the temperature when coaxial, flexible piezoelectric body 302 is polarized is used usually above coaxial, flexible piezoelectric body 302.Therefore, in order when polarizing, suitably to keep the temperature of coaxial, flexible piezoelectric body 302, heater is set.For heater, comprise that the heat block 371 of heater 307 is used in any desirable temperature by the block conductor 306 of an insulating trip 372 heating.In this embodiment, for insulating trip 372, the mica of used thickness 0.5mm, but also can use polyimides, polytetrafluoroethylene, PETG (PET), silicon rubber etc.Piezoelectric body tube 303 is placed in the groove 361 of block conductor 306, thereby can be heated around piezoelectric body tube 303 indirectly.Because the output by control heater 307 can remain on any desirable temperature to piezoelectric body tube 303, therefore can be at the temperature polarization coaxial, flexible piezoelectric body 302 of needs.
When piezoelectric body tube 303 by the part stationary that so connects or when mobile, between core electrode 301 and block conductor 306, apply a high voltage by D C device for generating voltage 309, thereby coaxial, flexible piezoelectric body 302 is polarized.When polarization, between core electrode 301 and block conductor 306, apply 5 to 10KV/mm high voltage.Specifically, polarize 120 ℃ temperature and when applying the voltage of 8KV/mm by piezoelectric body tube 303.
When coaxial, flexible piezoelectric body 302 comprises a trickle defective, and the part that comprises this trickle defective is placed on the block conductor 306, and the trickle discharge that produces in defect part makes block conductor 306 and core electrode 301 by short circuit.Therefore can not polarize.But if defect part leaves block conductor 306, and this moment, the coaxial, flexible piezoelectric body 302 that is placed on the block conductor 306 did not comprise any defective, and the insulation property between block conductor 306 and the core electrode 301 are recovered, thereby can polarize.Therefore, according to the polarization device of present embodiment; Only when being placed in the groove 361 of block conductor 306, the part that comprises defective can not polarize; Otherwise, can polarize.Therefore, under the situation that defect part do not occur, can not produce the fault of the feasible whole piezoelectric body tube 303 that can't polarize.
Produce defective when obviously discharge taking place in the coaxial, flexible piezoelectric body 302.Therefore, can before forming external electrode 304, detect the defective in the piezoelectric body tube 303 that is present in given length, thereby after forming piezoelectric cable, can easily remove this defect part.Thereby, can stably make and output can improve.
(embodiment 8)
Figure 11 A, 11B and 11C show the schematic diagram of the structure of coaxial, flexible piezoelectric body polarization device in the embodiment of the invention 8.A piezoelectric body tube 303 is placed in the groove 361 of block conductor 306, thereby it is directly heated around piezoelectric body tube 303.In this embodiment, also have a lid 310,311 or 312 to be placed on the groove 361, thereby heat distribute from groove 361 tops.Thereby can more suitably control the temperature of piezoelectric body tube 303, thereby coaxial, flexible piezoelectric body 302 can be polarized under the temperature of needs.The material of lid 310,311,312 can be the material of any kind of, as metal, resin or rubber, as long as it can resist predetermined temperature.Lid 310,311,312 can be an Any shape, as tabular, flange shape or bar-shaped, as long as it can cover the top of groove 361.Lid 310 among Figure 11 A is tabular and is placed on groove 361 tops.Because board-like material only needs to be cut into the length of needs, so lid 310 can easily processed and easily utilize.Lid 311 in Figure 11 B is have a part of convex surface 3111 tabular, and lid this bossing 3111 of 311 groove 361 of packing into can easily be fixed thereby cover 311.Lid 312 among Figure 11 C is pole shapes, and its diameter is placed on groove 361 tops greater than the width of groove 361.Lid 312 can be an Any shape, if it resembles the baffle plate of a diameter greater than the width of groove 361.For example, shape resembles a polygon such as triangle, quadrangle or pentagonal baffle plate and can be used as and cover 312.Lid 312 can easily be processed and easily be utilized, and this is because the baffle-like material only must cut into the length that needs.Because lid 312 shapes resemble a baffle plate, this baffle plate thickness only covers groove 361, can also reduce the consumption of material.In Figure 11 A, 11B and 11C, the moving direction that is placed on the piezoelectric body tube 303 on the block conductor 306 is represented by arrow.
(embodiment 9)
Figure 12 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device in the embodiment of the invention 9.A piezoelectric body tube 303 is placed in the hole 362 of block conductor 306, thereby it is heated around piezoelectric body tube 303 indirectly.In this embodiment, the passage of piezoelectric body tube 303 is hole 362, thereby piezoelectric body tube 303 is by 362 perisporium evenly heats from the hole.Thereby can more suitably control the temperature of piezoelectric body tube 303, thereby coaxial, flexible piezoelectric body 302 can be polarized under the temperature of needs.Conductors such as iron, stainless steel, copper, brass, aluminium are used as block conductor 306.Hole 362 can be an Any shape, as polygon (triangle, quadrangle, pentagon, hexagon etc.) or circle, as long as this shape can provide the passage of piezoelectric body tube 303.In order to make hole 362, can cut, discharge, extruding etc.In this embodiment, block conductor 306 uses aluminium, and hole 362 is circular, thereby can easily form by boring.In Fig. 3, the moving direction that is placed on the piezoelectric body tube 303 on the block conductor 306 is represented by arrow.
(embodiment 10)
Figure 13 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device in the embodiment of the invention 10.7,8,9 the coaxial, flexible piezoelectric body polarization device, the coaxial, flexible piezoelectric body polarization device among the embodiment 9 comprises a resistor 313 of connecting with piezoelectric body tube 303 in embodiment.When the coaxial, flexible piezoelectric body 302 that comprises trickle defect part becomes the coaxial, flexible piezoelectric body 302 of polarization, be applied to the voltage reduction on the coaxial, flexible piezoelectric body 302 and it can not be polarized.But, because can Control current by resistor 313, prevented destruction, and after the defect part of coaxial, flexible piezoelectric body 302 left block conductor 306, the coaxial, flexible piezoelectric body 302 of polarization can be polarized normally once more to the dc voltage generation device.Therefore, if defect part exists, can not produce the fault of the feasible whole coaxial, flexible piezoelectric body 302 that can't polarize.There is trickle defective in this explanation in the coaxial, flexible piezoelectric body 302 of the polarization of given length, thereby can detect the trickle defective that is present in the given length scope before forming external electrode 304.
(embodiment 11)
Figure 14 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device among the present invention the 11st embodiment.Coaxial, flexible piezoelectric body 402 is formed on the core electrode 401.Below, this molding will be called as piezoelectric body tube 403.The coiled type metal wire, a branch of fine rule or class liny are used as core electrode 401.As flexible piezoelectric body 402 be to comprise powder and the synthetic piezoelectrics that add the polymeric based material of epoxy resin, polyurethane resin, chloroprene resin, chlorination alkyd resin etc. to of zirconates-lead titanates piezoelectric ceramics bodies such as (zirconate-lead titanate), and polymerization piezoelectrics or the analog of PVDF etc.
Piezoelectric body tube 403 is placed in the piezoelectrics channel part 461 in the block conductor 406, and is moved by the mobile device (not shown).Piezoelectrics channel part 461 is made into rough and uneven in surface, as pit and projection.Conductors such as iron, stainless steel, copper, brass, aluminium, graphite are used as block conductor 406.In order to make piezoelectric body tube channel part 461 rough and uneven in surface, cut, discharge, forging etc. as pit and projection.In this embodiment, be easy to use and the aluminium that is easy to process is used as the material of block conductor 406.Specifically, with respect to the piezoelectric body tube 403 of external diameter 2mm, its width is 30mm, highly is 20mm, and length is 500mm.For the pit and the projection of piezoelectric body tube channel part 461, each pit is that 0.5mm is dark, and 1.5mm is wide, and each projection is that 1mm is wide.This means that pit and projection form continuously with the spacing of 2.5mm.Because the pit of piezoelectric body tube channel part 461 and projection are used to reduce the contact area with piezoelectric body tube 403, can adopt protuberance as keyway or opening.For the mobile device (not shown), piezoelectric body tube 403 winding reels twine and this reel is rotated with mobile piezoelectric body tube 403.In Fig. 1, the moving direction that is placed on the piezoelectric body tube 403 on the block conductor 406 is represented by arrow.
Temperature when the temperature when coaxial, flexible piezoelectric body 402 is polarized need be set usually and be higher than coaxial, flexible piezoelectric body 402 and be used; When coaxial, flexible piezoelectric body 402 is polarized, remain on the temperature that needs.Because coaxial, flexible piezoelectric body 402 contacts with projection with the pit of piezoelectric body tube channel part 461, block conductor 406 can be heated, thereby coaxial, flexible piezoelectric body 402 is heated to the temperature that needs.For coaxial, flexible piezoelectric body 402 being heated to the temperature that needs,, use a heat block 471 that comprises heater 407 to heat block conductor 406 in any desirable temperature by an insulating trip 472.In this embodiment, for insulating trip 472, the mica of used thickness 0.5mm, but also can use electrical insulating materials such as polyimides, polytetrafluoroethylene, PETG (PET) or silicon rubber.
Piezoelectric body tube channel part 461 is made into rough and uneven in surface as pit and protruding to reduce frictional resistance.Piezoelectric body tube 403 only contacts with the projection of pit with projection.This power that coaxial, flexible piezoelectric body 402 and piezoelectrics channel part 461 are attracted each other by electrostatic force produces is directly proportional with protruding area.When piezoelectric body tube 403 moved, frictional force was directly proportional with the power that coaxial, flexible piezoelectric body 402 and piezoelectrics channel part 461 are attracted each other.This means have pit and when projection piezoelectric body tube 403 and piezoelectrics channel part 461 between frictional force can be lowered, can move piezoelectric body tube 403 by very little power.
(embodiment 12)
Figure 15 shows the schematic diagram of the structure of the coaxial, flexible piezoelectric body polarization device among the present invention the 8th embodiment.In embodiment 8, the piezoelectric body tube channel part is formed by wire screen 410.Piezoelectric body tube 403 is placed on the block conductor 406 lip-deep wire screens 410, and is moved the device (not shown) and moves.Wire screen 410 surperficial rough and uneven in surface is as pit and projection.Wire netting 410 is used to form pit and projection, thereby can reduce piezoelectric body tube 403 and piezoelectric body tube channel part (in embodiment 2, be wire screen 410) between frictional force, and can enough very little power move piezoelectric body tube 403 and need not form configuration surface such as the pit and the projection of piezoelectric body tube 403.
For wire screen 410, can use conductors such as iron, stainless steel, copper, brass, aluminium.In this embodiment, use be easy to utilize and corrosion resistant stainless steel as the material of wire screen 410.Specifically, using line footpath is 450 stainless (steel) wire as 0.2mm, mesh.
(embodiment 13)
Figure 16 shows the schematic diagram of the structure of coaxial, flexible piezoelectric body polarization device among the present invention the 9th embodiment.This coaxial, flexible piezoelectric body polarization device is a kind of polarization device, and its block conductor 406 is formed with groove 411, and groove 411 is used as the channel part of piezoelectric body tube 403 and has the inner surface of the projection of forming-pit (unsmooth) shape 462.During piezoelectric body tube 403 in block conductor 406 is heated the groove 411 that is placed on block conductor 406 in order to heating, piezoelectric body tube 403 is by bottom and the heating of each wall portion from groove 411.Therefore, piezoelectric body tube 403 is heated more equably, thereby can polarize coaxial, flexible piezoelectric body 402 under the temperature of needs.The top is opened and can easily places piezoelectric body tube 403 from groove 411 tops.Because the inwall of the groove 411 of the channel part of piezoelectric body tube 403 forms projection-pit (unsmooth) shape 462, piezoelectric body tube 403 only contacts with projection in the projection with pit, thereby can be moved by very little power.
Conductors such as iron, stainless steel, copper, brass, aluminium, graphite are used as block conductor 306.Groove 411 can be an Any shape, as polygon (triangle, quadrangle, pentagon, hexagon etc.) or letter U shape, as long as this shape can allow to place piezoelectric body tube 403.In order to form groove 411, cut, discharge, extruding etc.Can by directly on the inner surface of groove 411, cut, discharge, pressure processing wait (unsmooth) shape 462 that forms pit-projection, perhaps provides (unsmooth) shape 462 of pit-projection by place the conductive component that is formed with pit and projection (being formed with pit and protruding wire screen, stamping, pressure plate or analog) on groove 411.
In this embodiment, block conductor 406 uses aluminium, because by utilizing end mill(ing) cutter to be easy to processing, groove 411 is a letter U shape, and places stainless (steel) wire so that pit-projection (unsmooth) shape 462 to be provided on the U-shaped inner surface.In Figure 16, the moving direction that is placed on the piezoelectric body tube 403 on the block conductor 406 is represented by arrow.
(advantage of the present invention)
As mentioned above, according to the of the present invention the 1st to the 4th kind of situation, if under tight contact situation, in the part of twining the first lead dish and the second lead dish, comprise trickle defective, the flexible piezoelectric body of polarization that then comprises the given length of defective can not be polarized, but all the other piezoelectric body tubes can be polarized.Before forming external electrode, can also detect the interior defective of flexible piezoelectric body of the polarization that is present in given length.
The 5th kind of situation can polarize when the thickness of flexible piezoelectric body is detected according to the present invention.
The the 6th to 8 kind of situation according to the present invention can polarize under suitable temperature under the situation of work safety of guaranteeing to polarize.
The 9th kind of situation according to the present invention is if produce discharge, the destruction to the first lead dish and the second lead dish that can reduce discharges causes at trickle defect part when polarization.
According to the present invention the 10th and 11 kind of situation, when being wound, piezoelectric body tube can polarize safely.
The 12nd kind of situation of the present invention makes it possible to easily make the flexible piezoelectric body to contact with the groove of the first lead dish and the groove of the second lead dish.
As mentioned above, the the 13rd to 15 kind of situation according to the present invention, if comprise trickle defective in the flexible piezoelectric body portion on being positioned over block conductor, the flexible piezoelectric body of polarization that comprises the given length of defective can not be polarized, but all the other piezoelectric body tubes can be polarized.Before forming external electrode, the interior defective of flexible piezoelectric body that is present in the polarization of given length also can be detected.
The 17th kind of situation according to the present invention, piezoelectric body tube can be polarized continuously.
As mentioned above, the 13rd, 14 and 20 to 22 kinds of situations according to the present invention, if comprise trickle defective in the flexible piezoelectric body portion on being positioned over block conductor, the flexible piezoelectric body that comprises after the polarization of given length of defective can not be polarized, but all the other piezoelectric body tubes can be polarized.Before forming external electrode, the interior defective of flexible piezoelectric body that is present in the polarization of given length also can be detected.
The 24th kind of situation according to the present invention, piezoelectric body tube can be polarized continuously.
As mentioned above, the the 27th to 31 kind of situation according to the present invention, block conductor has the piezoelectric body tube channel part, the piezoelectric body tube channel part is formed with pit and protruding with the resistance of reducing friction, thereby occur pit and the projection situation lower piezoelectric body pipe and the frictional force between the piezoelectric body tube channel part can be lowered, piezoelectric body tube can be moved by very little power.
According to the present invention the 32nd and 33 kind of situation, the frictional force between piezoelectric body tube and the piezoelectric body tube passage can be lowered, and piezoelectric body tube can be moved by very little power.Therefore, when piezoelectric body tube is drawn and be mobile, can not extend or rupture, and the polarization method of tool high reliability can be provided.
Claims (12)
1. the polarization device of a coaxial, flexible piezoelectric body cable comprises:
The first lead dish with a plurality of grooves is used for contacting with the coarse semi-circumference surface of piezoelectric body tube and rotating on given direction, and this piezoelectric body tube comprises a coaxial, flexible piezoelectric body around core electrode formation;
The second lead dish, it is configured in the described first lead dish back and has a plurality of grooves, is used for contacting with another coarse semi-circumference surface of described piezoelectric body tube;
Wind, it is used to twine described piezoelectric body tube after being configured in the described second lead dish;
Electric installation is used to be electrically connected described first lead dish and the described second lead dish; And
Be connected to the device for generating voltage of described electric installation and described core electrode.
2. the polarization device of coaxial, flexible piezoelectric body cable as claimed in claim 1 is characterized in that, described first lead dish and the described second lead dish rotate by the described piezoelectric body tube that is twined by described wind.
3. the polarization device of coaxial, flexible piezoelectric body cable as claimed in claim 1 is characterized in that, also comprises: tension applying apparatus is used for applying tension force to described piezoelectric body tube before described piezoelectric body tube is configured on the described first lead dish.
4. the polarization device of coaxial, flexible piezoelectric body cable as claimed in claim 1 is characterized in that, also comprises: electric discharge device is used for the surface charge of removing described piezoelectric body tube after described piezoelectric body tube leaves the described second lead dish.
5. the polarization device of coaxial, flexible piezoelectric body cable as claimed in claim 1 is characterized in that, also comprises: capacitance detecting device is used to detect the described core electrode of described piezoelectric body tube and the electric capacity between the described electric installation.
6. the polarization device of coaxial, flexible piezoelectric body cable as claimed in claim 1 is characterized in that, also comprises: around the electric insulation baffle wall of described first lead dish and the described second lead dish.
7. the polarization device of coaxial, flexible piezoelectric body cable as claimed in claim 6 is characterized in that, described electric insulation baffle wall is transparent.
8. the polarization device of coaxial, flexible piezoelectric body cable as claimed in claim 6 is characterized in that, also comprises the hot-air process units, is used for thermal air current is blown into described electric insulation baffle wall.
9. the polarization device of coaxial, flexible piezoelectric body cable as claimed in claim 1 is characterized in that, described first lead dish and the described second lead dish are made by stainless steel.
10. the polarization method of a coaxial, flexible piezoelectric body cable comprises step:
In a groove of the first lead dish, dispose piezoelectric body tube;
The described piezoelectric body tube of configuration in a groove of the second lead dish;
The described piezoelectric body tube of repeated configuration in another groove of the described first lead dish makes the described piezoelectric body tube of predetermined length be configured; With
When described piezoelectric body tube is wound device and twines, between the heart yearn of described piezoelectric body tube and described electric installation, apply dc voltage.
11. the polarization method of coaxial, flexible piezoelectric body cable as claimed in claim 10 is characterized in that, the described heart yearn of described piezoelectric body tube is placed in earth potential, and applies dc voltage between described heart yearn and described electric installation.
12. the polarization method of coaxial, flexible piezoelectric body cable as claimed in claim 11 is characterized in that, described coaxial, flexible piezoelectric body comprises rubber-based resin and piezoelectric ceramics body powder.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000381866A JP2002185058A (en) | 2000-12-15 | 2000-12-15 | Polarization device and method of coaxial, flexible piezoelectric cable |
| JP381866/00 | 2000-12-15 | ||
| JP077884/01 | 2001-03-19 | ||
| JP077883/01 | 2001-03-19 | ||
| JP234555/01 | 2001-08-02 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011381647A Division CN1323442C (en) | 2000-12-15 | 2001-12-15 | Polarizing device and method for coaxial flexible piezoelectric cable |
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| Publication Number | Publication Date |
|---|---|
| CN1801404A true CN1801404A (en) | 2006-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101269389A Pending CN1801404A (en) | 2000-12-15 | 2001-12-15 | Polarization device and method of coaxial, flexible piezoelectric cable |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2002185058A (en) |
| CN (1) | CN1801404A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133885A1 (en) * | 2016-12-16 | 2018-07-26 | 杨松 | Piezoelectric cable |
| CN110753975A (en) * | 2017-06-14 | 2020-02-04 | 斯派德科技术公司 | Additional units or cables connectable to power or signal lines of electrical devices |
-
2000
- 2000-12-15 JP JP2000381866A patent/JP2002185058A/en active Pending
-
2001
- 2001-12-15 CN CNA2005101269389A patent/CN1801404A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133885A1 (en) * | 2016-12-16 | 2018-07-26 | 杨松 | Piezoelectric cable |
| CN110753975A (en) * | 2017-06-14 | 2020-02-04 | 斯派德科技术公司 | Additional units or cables connectable to power or signal lines of electrical devices |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002185058A (en) | 2002-06-28 |
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