CN206134236U - Piezoelectric actuator and low frequency underwater acoustic transducer - Google Patents
Piezoelectric actuator and low frequency underwater acoustic transducer Download PDFInfo
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- CN206134236U CN206134236U CN201621033642.2U CN201621033642U CN206134236U CN 206134236 U CN206134236 U CN 206134236U CN 201621033642 U CN201621033642 U CN 201621033642U CN 206134236 U CN206134236 U CN 206134236U
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Abstract
The embodiment of the utility model provides a piezoelectric actuator and low frequency underwater acoustic transducer includes first connector, second connector and the first piezoelectric actuator of group to the first piezoelectric actuator of group includes a plurality of piezoelectric material posts. The one end of first voltage material post is matchd with the first groove phase that is located first connector, and the other end of first voltage material post matches with the second groove phase that is located the second connector. Shrink of a plurality of piezoelectric material posts or extension can drive the displacement of first connector and second connector. Through appropriate voltage drive, can make piezoelectric material's lengthwise oscillations displacement stack increase, consequently, increase as actuating mechanism's low frequency underwater acoustic transducer's emergence power capacity by piezoelectric actuator. The embodiment of the utility model provides a piezoelectric actuator and low frequency underwater acoustic transducer has improved current low frequency underwater acoustic transducer's the limited problem of emergence capacity.
Description
Technical field
The utility model is related to acoustic sensor field, in particular to a kind of piezo-activator and low frequency underwater
Transducer.
Background technology
At present, it is more effective undersea detection means by the use of sound wave as information carrier, and underwater acoustic transducer is under water
Detect indispensable critical component.The continuous improvement of fast development and application requirement along with modern sonar technology, the underwater sound
Low frequency, the small light of transducer has become the important trend of its development.At present widely used low-frequency transducer includes
Ultra-magnetic telescopic low-frequency underwater acoustic transducer, flextensional transducer and its retrofit product, flexible transducer etc..
Although however, existing most low-frequency underwater acoustic transducer can accomplish miniaturization, often in low-frequency underwater acoustic transducer
Piezoelectric it is less along the lengthwise oscillations displacement of piezoelectric so that the sounding limited power capacity of transducer.
Utility model content
In view of this, the utility model embodiment provides a kind of piezo-activator and low-frequency underwater acoustic transducer, to change
It is apt to the problem of existing low-frequency underwater acoustic transducer sounding finite capacity.
For achieving the above object, the utility model embodiment provides a kind of piezo-activator, including：First connector,
The second connector being oppositely arranged with first connector and first group of piezo-activator.Described first group piezoelectric actuated
Device includes multiple first piezoresistive material stock columns, and first connector surface relative with second connector is provided with multiple the
One groove, second connector surface relative with first connector is provided with multiple corresponding with first groove
The second groove, the quantity of the plurality of first groove and the plurality of second groove it is equal in number in the plurality of first pressure
The quantity of electric material post；First group of piezo-activator is recessed with first by the first piezoresistive material stock column with first connector
The mode that groove matches is fixedly connected；First group of piezo-activator passes through the first piezoresistive material stock column with second connector
It is fixedly connected with the mode of the second groove match.
In above-mentioned piezo-activator, also including second group of piezo-activator, second group of piezo-activator includes many
Individual second piezoresistive material stock column, first connector surface relative with second connector is provided with multiple through described
The first through hole of a connector, it is recessed that second connector surface relative with first connector is provided with multiple three
Groove, the quantity of the plurality of first through hole is equal in number in the plurality of second piezoresistive material stock column with the plurality of 3rd groove
Quantity；Second group of piezo-activator is mutually plugged together by the second piezoresistive material stock column with first connector with first through hole
Mode connect；Second group of piezo-activator is with second connector by the second piezoresistive material stock column and the 3rd groove phase
The mode of matching is fixedly connected.
One end of the second piezoresistive material stock column in second group of piezo-activator mutually plugs together with the first through hole of the first connector,
3rd groove match of the other end of second voltage column of material and the second connector, i.e. the second piezoresistive material stock column are connected with second
Device is fixedly connected, but the second piezoresistive material stock column does not run through the second connector；The insertion of second piezoresistive material stock column is located at the first connector
First through hole, the second piezoresistive material stock column run through the first connector.
The quantity of multiple second piezoresistive material stock columns can be three, then positioned at the first connector first through hole quantity
For three, the quantity positioned at the 3rd groove of the second connector is similarly three.
In above-mentioned piezo-activator, also including the 3rd group of piezo-activator, the 3rd group of piezo-activator includes many
Individual 3rd piezoresistive material stock column, first connector surface relative with second connector is provided with multiple 4th grooves,
Second connector surface relative with first connector be provided with it is multiple through second connector second lead to
Hole, the quantity of the plurality of 4th groove is equal in number in the plurality of 3rd piezoresistive material stock column with the plurality of second through hole
Quantity；The 3rd group of piezo-activator is with first connector by the 3rd piezoresistive material stock column and the 4th groove match
Mode be fixedly connected；The 3rd group of piezo-activator is logical by the 3rd piezoresistive material stock column and second with second connector
The mode that hole mutually plugs together connects.
One end of 3rd piezoresistive material stock column and the 4th groove match of the first connector, the 3rd piezoresistive material stock column it is another
End mutually plugs together with the second through hole of the second connector, i.e., the 3rd piezoresistive material stock column is fixedly connected with the first connector, and the 3rd pressure
Electric material post does not run through the first connector；3rd piezoresistive material stock column and the second through hole for inserting the second connector, and the 3rd piezoelectricity
Column of material runs through the second connector.
The quantity of the 3rd piezoresistive material stock column can be three, then the quantity of the 4th groove of the first connector is also three,
The quantity of the second through hole of the second connector is similarly three.
Preferably, in above-mentioned piezo-activator, the plurality of first piezoresistive material stock column, multiple second piezoresistive material stock columns with
And multiple 3rd piezoresistive material stock columns are cylindrical piezoelectric column of material.
Above-mentioned all piezoresistive material stock columns can be cylindrical piezoelectric column of material, it will be appreciated that piezoresistive material stock column also may be used
Think other shapes such as prism, it is to restriction of the present utility model that the concrete shape of piezoresistive material stock column should not be construed.
Preferably, in above-mentioned piezo-activator, the cylindrical piezoelectric column of material is constituted by piezoelectric element.
Cylindrical piezoelectric column of material can be made up of piezoelectric element, specifically, each cylindrical piezoelectric column of material
Can be formed by even number piezoelectric ceramic thin sheet series connection bonding, and the polarised direction of two neighboring piezoelectric ceramic thin sheet is contrary
, wherein, piezoelectric ceramics includes PZT piezoelectric ceramics and its derived material.
Piezoresistive material stock column can be made up of piezoelectric element, it is also possible to be formed in other way, such as by radially
The piezoelectric ceramic tube composition of polarization, it is that the utility model is limited that the concrete generation type of piezoresistive material stock column should not be construed.
Preferably, in above-mentioned piezo-activator, the plurality of first piezoresistive material stock column, multiple second piezoresistive material stock columns with
And multiple 3rd piezoresistive material stock columns are rectangular-shape piezoresistive material stock column.
Above-mentioned piezoresistive material stock column can be rectangular-shape piezoresistive material stock column, it will be appreciated that piezoresistive material stock column can also
For other shapes such as prism, it is to restriction of the present utility model that the concrete shape of piezoresistive material stock column should not be construed.
Preferably, in above-mentioned piezo-activator, the rectangular-shape piezoresistive material stock column is by lead based relaxor ferro-electricity single crystal
Make.
Lead based relaxor ferro-electricity single crystal can specifically include Pb (Zn1/3Nb2/3)O3-PbTiO3, Pb (Mg1/3Nb2/3)O3-
PbTiO3, Pb (In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3, Pb (Mg1/3Nb2/3)O3-Pb(Zr0.48Ti0.52)O3And its
Derived material.
It is appreciated that piezoresistive material stock column can also be made up of other materials, the concrete manufacture material of piezoresistive material stock column is not
It is construed as being to limit the utility model.
Preferably, in above-mentioned piezo-activator, each in the rectangular-shape piezoresistive material stock column includes that first is single
Chip and the second single-chip, the size of first single-chip is equivalently-sized with the second single-chip, first single-chip with
Second single-chip is fixedly connected by way of bonding.
The single-crystal wafer polarised direction of the first single-chip and the second single-chip is [011], is had in [100] direction higher
Horizontal piezoelectric modulus.Wherein, [011] direction is the polarised direction of monocrystalline, and [100] direction is driving direction.
Preferably, in above-mentioned piezo-activator, also including center machinery pretension post, first connector and second
Connector also includes being located at the central through hole of first connector and the second connector, the center machinery pretension post respectively
Mutually plug together with the central through hole of first connector, the central through hole of center machinery pretension post and second connector
Mutually plug together.
First connector includes the central through hole through the first connector, and the second connector is included through the second connector
Central through hole, the position of the central through hole of the first connector is corresponding with the position of the central through hole of the second connector.Center machine
Tool pretension post can mutually be plugged together with the central through hole of the first connector, the central through hole of center machinery pretension post and the second connector
Mutually plug together.
The utility model embodiment additionally provides a kind of low-frequency underwater acoustic transducer, and the low-frequency underwater acoustic transducer includes above-mentioned
Piezo-activator, also including previous irradiation head and tail mass, one end of the piezo-activator is fixed with the previous irradiation head
Connection, the other end of the piezo-activator is fixedly connected with the tail mass.
The piezo-activator of the utility model embodiment offer and having the beneficial effect that for low-frequency underwater acoustic transducer：
The utility model embodiment provide piezo-activator and low-frequency underwater acoustic transducer include the first connector, second
Connector and first group of piezo-activator, and first group of piezo-activator includes multiple first piezoresistive material stock columns.First is electric
One end of pressure column of material and the first groove match for being located at the first connector, the other end of first voltage column of material be located at the
Second groove match of two connectors.Multiple first piezoresistive material stock columns shrink or extend, can drive the first connector and
The displacement of the second connector.By appropriate voltage drive, the displacement superposed increase of lengthwise oscillations of piezoelectric can be caused, because
This, is increased by generation power capacity of the piezo-activator as the low-frequency underwater acoustic transducer of drive mechanism.The utility model is implemented
Piezo-activator and low-frequency underwater acoustic transducer that example is provided improve the generation finite capacity of existing low-frequency underwater acoustic transducer
Problem.
Description of the drawings
For clearer explanation the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the structural representation of the first connector that the utility model preferred embodiment is provided；
Fig. 2 is the structural representation at another visual angle of the first connector that the utility model preferred embodiment is provided；
Fig. 3 is the structural representation of the second connector that the utility model preferred embodiment is provided；
Fig. 4 is the structural representation at another visual angle of the second connector that the utility model preferred embodiment is provided；
Fig. 5 is the structural representation of the piezo-activator that the utility model preferred embodiment is provided；
Fig. 6 is a kind of structural representation of specific embodiment of the piezo-activator that the utility model preferred embodiment is provided
Figure；
Fig. 7 is the structural representation of the low-frequency underwater acoustic transducer that the utility model preferred embodiment is provided；
Fig. 8 is the structural representation at another visual angle of the low-frequency underwater acoustic transducer that the utility model preferred embodiment is provided；
Fig. 9 is the structural representation of the piezo-activator that another preferred embodiment of the utility model is provided；
Figure 10 is the structural representation of the low-frequency underwater acoustic transducer that another preferred embodiment of the utility model is provided.
Icon：
100- piezo-activators；The connectors of 110- first；The grooves of 111- first；112- first through hole；The grooves of 113- the 4th；
The bottom surfaces of 114- first；The bottom surfaces of 115- second；The connectors of 120- second；The grooves of 121- second；The grooves of 122- the 3rd；123- second leads to
Hole；The bottom surfaces of 124- the 3rd；The bottom surfaces of 125- the 4th；First group of piezo-activator of 130-；131- the first piezoresistive material stock columns；140- second
Group piezo-activator；141- the second piezoresistive material stock columns；The 3rd group of piezo-activator of 150-；The piezoresistive material stock columns of 151- the 3rd；161-
First single-chip；The single-chips of 162- second；170- centers machinery pretension post；180- central through holes；200- low-frequency underwater acoustic transducers；
210- previous irradiation heads；220- tail masses.
Specific embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the utility model, rather than the reality of whole
Apply example.Hereinafter the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit claimed sheet
The scope of utility model, but it is merely representative of selected embodiment of the present utility model.Based on embodiment of the present utility model, ability
The every other embodiment that field technique personnel are obtained on the premise of creative work is not made, belongs to the utility model
The scope of protection.
Embodiment
Fig. 1, Fig. 2 show the first connector 110 that the utility model preferred embodiment is provided, and Fig. 3, Fig. 4 show this
The second connector 120 that utility model preferred embodiment is provided, Fig. 5 shows the piezoelectricity that the utility model preferred embodiment is provided
Actuator 100.Details refer to Fig. 1 to Fig. 5, and the piezo-activator 100 that the utility model embodiment is provided includes the first connection
Device 110, the second connector 120 and first group of piezo-activator 130.First group of piezo-activator 130 is connected respectively with first
The connector 120 of device 110 and second is connected.
First connector 110 includes the first groove 111, first through hole 112, the 4th groove 113 and central through hole 180,
Details refer to Fig. 1, and first groove 111, first through hole 112, the 4th groove 113 and central through hole 180 may be contained within
First bottom surface 114 of the first connector 110.First connector 110 is specifically as follows disc-shaped structure.
First groove 111, the quantity of the groove 113 of first through hole 112 and the 4th can be three, and the first groove
111st, the groove 113 of first through hole 112 and the 4th is evenly distributed on the first bottom surface 114 of the first connector 110, and details are referred to
Fig. 1.
First through hole 112 runs through first connector 110, and details refer to Fig. 2, the first connector as shown in Figure 2
110 the second bottom surface 115, shows the first through hole 112 through the first connector 110.
Central through hole 180 is arranged at the position in the center of circle of discoid first connector 110, and central through hole 180 is same
Through first connector 110, details refer to Fig. 2.
Second connector 120 includes the second groove 121, the 3rd groove 122, the second through hole 123 and central through hole 180,
Details refer to Fig. 3, and the second groove 121, the 3rd groove 122, the second through hole 123 and central through hole 180 may be contained within second
3rd bottom surface 124 of connector 120.Second connector 120 is specifically as follows disc-shaped structure.
The quantity of the second groove 121, the 3rd groove 122 and the second through hole 123 can also be three, and the second groove
121st, the 3rd groove 122 and the second through hole 123 are evenly distributed on the 3rd bottom surface 124 of discoid second connector 120.
Second through hole 123 runs through second connector 120, and details refer to Fig. 4, the second connector as shown in Figure 4
120 the 4th bottom surface 125 shows the second through hole 123 through the second connector 120.
Central through hole 180 is arranged at the position in the center of circle of discoid second connector 120, and central through hole 180 is same
Through second connector 120, details refer to Fig. 4.First group of piezo-activator 130 includes multiple first piezoresistive material stock columns
131, specifically, including three the first piezoresistive material stock columns 131, details refer to Fig. 5.
In piezo-activator 100 as shown in Figure 5, the first bottom surface 114 of the first connector 110 and the second connector
120 the 3rd bottom surface 124 is relative.Positioned at the position of three the first grooves 111 of the first bottom surface 114 of the first connector 110, point
It is not corresponding with the position of three the second grooves 121 positioned at the 3rd bottom surface 124 of the second connector 120.
Positioned at the position of three first through hole 112 of the first connector 110, respectively with the positioned at the second connector 120
The position of three the 3rd grooves 122 of three bottom surfaces 124 is corresponding.
Positioned at the position of three the 4th grooves 113 of the first bottom surface 114 of the first connector 110.Respectively with positioned at second
The position of three the second through holes 123 of connector 120 is corresponding.
Three the first piezoresistive material stock columns 131 are corresponding respectively with three the first grooves 111 of the first connector 110, i.e., and first
Group piezo-activator 130 is consolidated with the first connector 110 by way of the first piezoresistive material stock column 131 is matched with the first groove 111
Fixed connection.First piezoresistive material stock column 131 specifically correspondence can be adhered to the first recessed of the first connector 110 by way of bonding
In groove 111, one end of the first piezoresistive material stock column 131 be located at the first connector 110 the first bottom surface 114 the first groove 111
Match.
Three the first piezoresistive material stock columns 131 are corresponding respectively with three the second grooves 121 of the second connector 120, i.e., and first
Group piezo-activator 130 is consolidated with the second connector 120 by way of the first piezoresistive material stock column 131 is matched with the second groove 121
Fixed connection.Specifically, the first piezoresistive material stock column 131 correspondence can be adhered to the of the second connector 120 by way of bonding
In two grooves 121, the other end of the first piezoresistive material stock column 131 is recessed with second positioned at the 3rd bottom surface 124 of the second connector 120
Groove 121 matches, and the first bottom surface 114 is relative with the 3rd bottom surface 124, and details refer to Fig. 5.
The piezo-activator 100 that the utility model embodiment is provided also includes second group of piezo-activator 140 and the 3rd
Group piezo-activator 150, details refer to Fig. 6.
In piezo-activator 100 as shown in Figure 6, the first bottom surface 114 of the first connector 110 and the second connector
120 the 3rd bottom surface 124 is relative.Positioned at the position of three the first grooves 111 of the first bottom surface 114 of the first connector 110, point
It is not corresponding with the position of three the second grooves 121 positioned at the 3rd bottom surface 124 of the second connector 120.
Positioned at the position of three first through hole 112 of the first connector 110, respectively with the positioned at the second connector 120
The position of three the 3rd grooves 122 of three bottom surfaces 124 is corresponding.
Positioned at the position of three the 4th grooves 113 of the first bottom surface 114 of the first connector 110.Respectively with positioned at second
The position of three the second through holes 123 of connector 120 is corresponding.
Second group of piezo-activator 140 includes multiple second piezoresistive material stock columns 141, specifically, including three the second piezoelectricity
Column of material 141, details refer to Fig. 6.Three first through hole 112 of three the second piezoresistive material stock columns 141 and the first connector 110
Correspond to respectively, i.e., the second group connector 110 of piezo-activator 140 and first is by the second piezoresistive material stock column 141 and first through hole
112 modes for plugging together connect.Mutually insert with the first through hole 112 positioned at the first connector 110 one end of second piezoresistive material stock column 141
Close, the second piezoresistive material stock column 141 can pass through first through hole 112, through the first connector 110, from the of the first connector 110
Two bottom surfaces 115 pass, and details refer to Fig. 6.
Three the second piezoresistive material stock columns 141 are corresponding respectively with three the 3rd grooves 122 of the second connector 120, i.e., and second
Group piezo-activator 140 is consolidated with the second connector 120 by way of the second piezoresistive material stock column 141 is matched with the 3rd groove 122
Fixed connection.Specifically, the second piezoresistive material stock column 141 correspondence can be adhered to the of the second connector 120 by way of bonding
In three grooves 122, the other end of the second piezoresistive material stock column 141 is recessed with the 3rd positioned at the 3rd bottom surface 124 of the second connector 120
Groove 122 matches.
3rd group of piezo-activator 150 includes multiple 3rd piezoresistive material stock columns 151, specifically, including three the 3rd piezoelectricity
Column of material 151, details refer to Fig. 6.Three the 4th grooves 113 of three the 3rd piezoresistive material stock columns 151 and the first connector 110
Correspond to respectively, i.e., the 3rd group connector 110 of piezo-activator 150 and first is by the 3rd piezoresistive material stock column 151 and the 4th groove
The mode of 113 matchings is fixedly connected.Specifically, the 3rd piezoresistive material stock column 151 correspondence can be adhered to the by way of bonding
In 4th groove 113 of a connector 110, one end of the 3rd piezoresistive material stock column 151 be located at the first connector 110 the first bottom
4th groove 113 in face 114 matches.
Three the 3rd piezoresistive material stock columns 151 are corresponding respectively with three the second through holes 123 of the second connector 120, i.e., and the 3rd
Group piezo-activator 150 connects with the second connector 120 by way of the 3rd piezoresistive material stock column 151 is plugged together with the second through hole 123
Connect.The other end of the 3rd piezoresistive material stock column 151 is mutually plugged together with the second through hole 123 positioned at the second connector 120, the 3rd piezoresistive material
Stock column 151 can pass through the second through hole 123, through the second connector 120, wear from the 4th bottom surface 125 of the second connector 120
Go out, details refer to Fig. 6.
The piezo-activator 100 also includes center machinery pretension post 170, the central through hole 180 of the first connector 110 and the
The central through hole 180 of two connectors 120 is relative, and the center machinery pretension post 170 is both through the central through hole of the first connector 110
180, but through the central through hole 180 of the second connector 120, details refer to Fig. 8.
The piezo-activator 100 that the utility model embodiment is provided include the first connector 110, the second connector 120, the
The mechanical pretension post 170 in one piezoresistive material stock column 131, the second piezoresistive material stock column 141, the 3rd piezoresistive material stock column 151 and center.Its
In, the first piezoresistive material stock column 131 is fixed with the first connector 110 and the second connector 120 by way of matching grooves
Connection；Second piezoresistive material stock column 141 runs through the first connector 110, and is connected by way of matching grooves with the second connector 120
Connect；3rd piezoresistive material stock column 151 is connected with the first connector 110 by way of matching grooves, and through the second connector
120.Center machinery pretension post 170 is through the first connector 110 and the second connector 120.
By appropriate voltage drive, while allowing the first piezoresistive material stock column 131 to shrink, (i.e. first group piezo-activator
130 when shrinking), the second piezoresistive material stock column 141 and the 3rd piezoresistive material stock column 151 extend (i.e. second group piezo-activator 140 with
And the 3rd group of piezo-activator 150 extends)；Or while allowing the first piezoresistive material stock column 131 to extend, (i.e. first group piezoelectricity is caused
When dynamic device 130 extends), the second piezoresistive material stock column 141 and the 3rd piezoresistive material stock column 151 shrink (i.e. second group piezo-activator
140 and the 3rd group of piezo-activator 150 shrink)；Its result is that the axial displacement of each group actuator is overlapped mutually, and is realized bigger
Axial displacement.And due to the first piezoresistive material stock column 131, the second piezoresistive material stock column 141, the 3rd piezoresistive material stock column 151 number
Amount is three, therefore piezoresistive material stock column can be more firm with the connection of the first connector 110 or the second connector 120, it is not easy to
There is the situation for causing piezo-activator 100 to fail because of vibrations or impact load.
First piezoresistive material stock column 131, the second piezoresistive material stock column 141 and the 3rd piezoresistive material stock column 151 can be cylinder
Shape piezoresistive material stock column.Cylindrical piezoelectric column of material can be made up of piezoelectric element, wherein, piezoelectric ceramics includes zirconium metatitanic acid
Lead piezoelectric ceramics (piezoelectric ceramic transducer, PZT) and its derived material.
First piezo-activator 100, the second piezo-activator 100 and the 3rd piezo-activator 100 can also use footpath
To the piezoelectric monocrystal sheet composition of the piezoelectric ceramic tube, single piezo-electric crystal or combination of polarization.
The making material of the first connector 110 and the second connector 120 can be the high metal of light weight, intensity or conjunction
Gold, including but not limited to following material：Aluminium alloy, magnesium alloy, titanium alloy, aluminium beryllium alloy, aluminium base and magnesium base composite material.Simulation
Experiment shows, if the material of the first connector 110, the second connector 120 is aluminium alloy, and the first piezo-activator 100, second
When the piezo-activator 100 of piezo-activator 100 and the 3rd is by PZT piezoelectric elements, the first connector 110 and second connects
The bending displacement for connecing device 120 is about 5 the percent of the total axial displacement of piezo-activator 100.
First connector 110 and the second connector 120 can be discoid, with certain thickness, specifically can connect
The connector of nearly short cylindrical shape.Short cylindrical shape structure advantageously ensures that being reliably connected for above-mentioned piezoresistive material stock column and groove, so as to
The first connector 110 and the second connector 120 is set not to allow to be also easy to produce diastrophic situation in motion.
The center machinery pretension post 170 of the piezo-activator 100 that the utility model embodiment is provided is for first group of pressure
130, second group of piezo-activator 140 of electric actuator and the 3rd group of piezo-activator 150 apply compression, cause above-mentioned piezoelectricity
Dynamic device 100 works under action of compressive stress.
Details refer to Fig. 7, and Fig. 7 shows the low-frequency underwater acoustic transducer 200 that the utility model embodiment is provided, the low frequency
Underwater acoustic transducer 200 is driven by piezo-activator described above 100.The low-frequency underwater acoustic transducer 200 also includes previous irradiation head 210
With tail mass 220, the second piezoresistive material stock column 141 of piezo-activator 100 is connected with previous irradiation head 210, piezo-activator
100 the 3rd piezoresistive material stock column 151 is connected with tail mass 220, and by center machinery pretension post 170 to piezo-activator
100 provide pretightning force.
The resonant frequency of low-frequency underwater acoustic transducer 200 as shown in Figure 7 is the minimum of each part coupled resonance, i.e., front spoke
Penetrate 210, first connector 110,120, first group of the second connector, 130, second group of piezo-activator piezo-activator 140,
3rd group of piezo-activator 150, tail mass 220 and center machinery pretension post 170 is used as the minimum of the resonance of an entirety
Frequency.The low-frequency underwater acoustic transducer 200 can effectively utilizes multi-mode coupling resonance extension working band.
Details refer to Fig. 9, and Fig. 9 shows the piezo-activator 100 that another preferred embodiment of the utility model is provided, figure
Piezo-activator 100 shown in 9 is with the difference of the piezo-activator 100 shown in Fig. 6：Piezo-activator 100 shown in Fig. 9
The first piezoresistive material stock column 131, the second piezoresistive material stock column 141 and the 3rd piezoresistive material stock column 151 be rectangular-shape structure, and
First group of piezo-activator, 130, second group of piezo-activator 140, the material of the 3rd group of piezo-activator 150 are lead based relaxor iron
Electric monocrystalline.
Specifically, each in rectangular-shape piezoresistive material stock column may each comprise the first single-chip 161 and the second single-chip
162, the size of first single-chip 161 is equivalently-sized with the second single-chip 162, first single-chip 161 and second
Single-chip 162 is fixedly connected by way of bonding, and details refer to Fig. 9.
The horizontal piezoelectric property of lead based relaxor ferro-electricity single crystal is more excellent.Lead based relaxor ferro-electricity single crystal can specifically include Pb
(Zn1/3Nb2/3)O3-PbTiO3, Pb (Mg1/3Nb2/3)O3-PbTiO3, Pb (In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3,
Pb(Mg1/3Nb2/3)O3-Pb(Zr0.48Ti0.52)O3And its derived material.
Details refer to Figure 10, and Figure 10 shows the low-frequency underwater acoustic transducer that the piezo-activator 100 shown in Fig. 9 drives
200.Compared with the low-frequency underwater acoustic transducer 200 shown in Fig. 7, difference is Figure 10 to low-frequency underwater acoustic transducer 200 shown in Figure 10
The piezo-activator 100 of the low-frequency underwater acoustic transducer 200 for illustrating is piezoelectric actuated with the low-frequency underwater acoustic transducer 200 shown in Fig. 7
Device 100 is different.By the PZN-5.5%PT d of [011] direction polarization32The comparable size underwater sound is changed made by transverse mode single-crystal wafer
It is low by 1/4 that the center frequency ratio PZT piezoelectric elements of energy device drive.
The piezo-activator 100 and low-frequency underwater acoustic transducer 200 that the utility model embodiment is provided connects including first
Device 110, the second connector 120 and first group of piezo-activator 130, and first group of piezo-activator 130 includes multiple the
One piezoresistive material stock column 131.One end of first voltage column of material matches with the first groove 111 positioned at the first connector 110, the
The other end of one voltage material post matches with the second groove 121 positioned at the second connector 120.Multiple first piezoresistive material stock columns
131 shrink or extend, and can drive the displacement of the first connector 110 and the second connector 120.Swashed by appropriate voltage
Encourage, the displacement superposed increase of lengthwise oscillations of piezoelectric can be caused, therefore, by piezo-activator 100 as the low of drive mechanism
The generation power capacity of frequency underwater acoustic transducer 200 increases.Piezo-activator 100 and low frequency that the utility model embodiment is provided
Underwater acoustic transducer 200 improves the problem of the generation finite capacity of existing low-frequency underwater acoustic transducer 200.
To make purpose, technical scheme and the advantage of the utility model embodiment clearer, above in conjunction with the utility model
Accompanying drawing in embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment
The embodiment stated is a part of embodiment of the utility model, rather than the embodiment of whole.Generally described in accompanying drawing herein and
The component of the utility model embodiment for illustrating can be arranged and designed with a variety of configurations.
Therefore, the detailed description of of the present utility model embodiment of the above to providing in the accompanying drawings is not intended to limit requirement
The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and is explained in subsequent accompanying drawing.
In description of the present utility model, it should be noted that the orientation or position relationship that indicate are based on shown in accompanying drawing
Orientation or position relationship, or the orientation usually put when using of the utility model product or position relationship, merely to
It is easy to describe the utility model and simplifies description, rather than indicates or imply that the device or element of indication there must be specific side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in utility model.
Claims (10)
1. a kind of piezo-activator, it is characterised in that include：First connector and first connector be oppositely arranged
Two connectors and first group of piezo-activator,
First group of piezo-activator includes multiple first piezoresistive material stock columns, first connector and second connector
Relative surface is provided with multiple first grooves, and second connector surface relative with first connector is provided with many
Individual second groove corresponding with first groove, the number of the quantity of the plurality of first groove and the plurality of second groove
Amount is equal to the quantity of the plurality of first piezoresistive material stock column；
First group of piezo-activator and first connector are by the first piezoresistive material stock column and the first groove match
Mode is fixedly connected；
First group of piezo-activator and second connector are by the first piezoresistive material stock column and the second groove match
Mode is fixedly connected.
2. piezo-activator according to claim 1, it is characterised in that also including second group of piezo-activator,
Second group of piezo-activator includes multiple second piezoresistive material stock columns, first connector and second connector
Relative surface is provided with multiple first through hole through first connector, and second connector is connected with described first
The relative surface of device is provided with multiple 3rd grooves, the quantity of the quantity of the plurality of first through hole and the plurality of 3rd groove
It is equal to the quantity of the plurality of second piezoresistive material stock column；
Second group of piezo-activator is mutually plugged together with first connector by the second piezoresistive material stock column and first through hole
Mode connects；
Second group of piezo-activator and second connector are by the second piezoresistive material stock column and the 3rd groove match
Mode is fixedly connected.
3. piezo-activator according to claim 2, it is characterised in that also including the 3rd group of piezo-activator,
The 3rd group of piezo-activator includes multiple 3rd piezoresistive material stock columns, first connector and second connector
Relative surface is provided with multiple 4th grooves, and second connector surface relative with first connector is provided with many
Individual the second through hole through second connector, the quantity of the plurality of 4th groove and the quantity of the plurality of second through hole
It is equal to the quantity of the plurality of 3rd piezoresistive material stock column；
The 3rd group of piezo-activator and first connector are by the 3rd piezoresistive material stock column and the 4th groove match
Mode is fixedly connected；
The 3rd group of piezo-activator is mutually plugged together with second connector by the 3rd piezoresistive material stock column and the second through hole
Mode connects.
4. piezo-activator according to claim 3, it is characterised in that the plurality of first piezoresistive material stock column, Duo Ge
Two piezoresistive material stock columns and multiple 3rd piezoresistive material stock columns are cylindrical piezoelectric column of material.
5. piezo-activator according to claim 4, it is characterised in that the cylindrical piezoelectric column of material is made pottery by piezoelectricity
Porcelain stacks composition.
6. piezo-activator according to claim 3, it is characterised in that the plurality of first piezoresistive material stock column, Duo Ge
Two piezoresistive material stock columns and multiple 3rd piezoresistive material stock columns are rectangular-shape piezoresistive material stock column.
7. piezo-activator according to claim 6, it is characterised in that the rectangular-shape piezoresistive material stock column is by lead base
Relaxor ferroelectric monocrystal is made.
8. piezo-activator according to claim 7, it is characterised in that each in the rectangular-shape piezoresistive material stock column
Include the first single-chip and the second single-chip, the size of first single-chip is equivalently-sized with the second single-chip, described
First single-chip is fixedly connected with the second single-chip by bonding mode.
9. piezo-activator according to claim 1, it is characterised in that also including center machinery pretension post, described first
Connector and the second connector also include being located at the central through hole of first connector and the second connector respectively, described
Center machinery pretension post is mutually plugged together with the central through hole of first connector, and the center machinery pretension post connects with described second
The central through hole for connecing device is mutually plugged together.
10. a kind of low-frequency underwater acoustic transducer, it is characterised in that the low-frequency underwater acoustic transducer is included as claim 3 to 9 is arbitrary
Piezo-activator described in, also including previous irradiation head and tail mass, one end of the piezo-activator and the front spoke
Penetrate head to be fixedly connected, the other end of the piezo-activator is fixedly connected with the tail mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033642.2U CN206134236U (en) | 2016-08-31 | 2016-08-31 | Piezoelectric actuator and low frequency underwater acoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033642.2U CN206134236U (en) | 2016-08-31 | 2016-08-31 | Piezoelectric actuator and low frequency underwater acoustic transducer |
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| Publication Number | Publication Date |
|---|---|
| CN206134236U true CN206134236U (en) | 2017-04-26 |
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ID=58566888
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621033642.2U Active CN206134236U (en) | 2016-08-31 | 2016-08-31 | Piezoelectric actuator and low frequency underwater acoustic transducer |
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| Country | Link |
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| CN (1) | CN206134236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205583A (en) * | 2016-08-31 | 2016-12-07 | 北京越音速科技有限公司 | Piezo-activator and low-frequency underwater acoustic transducer |
| JP2020526009A (en) * | 2017-06-12 | 2020-08-27 | マイクロファイン マテリアルズ テクノロジーズ ピーティーイー リミテッドＭｉｃｒｏｆｉｎｅ Ｍａｔｅｒｉａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ Ｌｔｄ | Cost-effective high flexural rigidity connector and piezoelectric actuator made therefrom |
-
2016
- 2016-08-31 CN CN201621033642.2U patent/CN206134236U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205583A (en) * | 2016-08-31 | 2016-12-07 | 北京越音速科技有限公司 | Piezo-activator and low-frequency underwater acoustic transducer |
| WO2018041241A1 (en) * | 2016-08-31 | 2018-03-08 | Beijing Supersonic Technology Co., Ltd. | Piezoelectric actuator and low frequency underwater projector |
| JP2020526009A (en) * | 2017-06-12 | 2020-08-27 | マイクロファイン マテリアルズ テクノロジーズ ピーティーイー リミテッドＭｉｃｒｏｆｉｎｅ Ｍａｔｅｒｉａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ Ｌｔｄ | Cost-effective high flexural rigidity connector and piezoelectric actuator made therefrom |
| EP3639527A4 (en) * | 2017-06-12 | 2021-01-13 | Microfine Materials Technologies Pte Ltd | Cost-effective high-bending-stiffness connector and piezoelectric actuator made of such |
| US11716908B2 (en) | 2017-06-12 | 2023-08-01 | Microfine Materials Technologies Pte Ltd | Cost-effective high-bending-stiffness connector and piezoelectric actuator made of such |
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