CN206906415U - Electric charge output element and piezoelectric acceleration sensor - Google Patents
Electric charge output element and piezoelectric acceleration sensor Download PDFInfo
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- CN206906415U CN206906415U CN201720669166.1U CN201720669166U CN206906415U CN 206906415 U CN206906415 U CN 206906415U CN 201720669166 U CN201720669166 U CN 201720669166U CN 206906415 U CN206906415 U CN 206906415U
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Abstract
A kind of electric charge output element and piezoelectric acceleration sensor are the utility model is related to, electric charge output element includes：Support, including connection member；Piezoelectric element, it is loop configuration body, is socketed in connection member, the first deformation groove is provided with piezoelectric element, the first deformation groove penetrates the side wall of piezoelectric element, so that piezoelectric element disconnects on ring；Mass, it is loop configuration body, socket is on the piezoelectric element；Wherein, piezoelectric element is interference fitted with connection member and mass, it is rigid contact between the piezoelectric element of electric charge output element, mass and support that the utility model embodiment provides, the integral rigidity of electric charge output element can be effectively lifted, then lifts the Frequency Response and resonance of piezoelectric acceleration sensor.Meanwhile the first deformation groove set on the piezoelectric element so that piezoelectric element has bigger deformation quantity, the assembling being easy between mass, piezoelectric element and support, the efficiency of assembling of raising electric charge output element.
Description
Technical field
Sensor technical field is the utility model is related to, is passed more particularly to a kind of electric charge output element and piezoelectric acceleration
Sensor.
Background technology
Piezoelectric acceleration sensor is also known as piezoelectric accelerometer, falls within inertial sensor.Piezoelectric acceleration sensor
Principle be piezo-electric effect using piezoelectric element, when accelerometer is vibrated, mass add power on the piezoelectric element also with
Change.When tested vibration frequency is far below the intrinsic frequency of accelerometer, then the change of power is directly proportional to by measuring acceleration.
Electric charge output element is provided with piezoelectric acceleration sensor, in the prior art, each part of electric charge output element
Between using articulamentum connect, although articulamentum connection by way of enable to electric charge output element each part assemble knot
Close, but use articulamentum connected mode to require high for the quality and assembly manipulation of articulamentum, if containing miscellaneous in articulamentum
Misoperation when matter or assembling, then bonding strength is low between causing each part of electric charge output element so that electric charge output element
Integral rigidity deficiency, and then cause the Frequency Response of piezoelectric acceleration sensor and resonance too low.
Utility model content
The utility model embodiment provides a kind of electric charge output element and piezoelectric acceleration sensor, can ensure that electric charge is defeated
Go out the rigidity of element, and then lift the Frequency Response and resonance of piezoelectric acceleration sensor.
On the one hand the utility model embodiment proposes a kind of electric charge output element, including：Support, including connection member；
Piezoelectric element, it is loop configuration body, is socketed in connection member, the first deformation groove, the first deformation groove is provided with piezoelectric element
The side wall of piezoelectric element is penetrated, so that piezoelectric element disconnects on ring；Mass, it is loop configuration body, is socketed in piezoelectricity member
On part；Wherein, piezoelectric element is interference fitted with connection member and mass.
According to the one side of the utility model embodiment, the second shape of the side wall of insertion mass is provided with mass
Become groove, so that mass disconnects on ring, and the preload ring being socketed on mass, preload ring and quality are further set
Block is interference fitted.
According to the one side of the utility model embodiment, the first deformation groove is bar-shaped trough and along the axis of piezoelectric element
Direction extends, and the second deformation groove is bar-shaped trough and extended along the axis direction of mass.
Formed according to the one side of the utility model embodiment, on piezoelectric element at the first deformation groove two it is relative
The distance between first groove section, two first relative groove sections are not more than 0.2mm, on mass at the second deformation groove shape
The distance between the second groove section relative into two, two second relative groove sections are not more than 0.2mm.
According to the one side of the utility model embodiment, preload ring, mass, the line expansion system of piezoelectric element and support
Number is sequentially reduced.
According to the one side of the utility model embodiment, piezoelectric element is made up of piezoelectric ceramics or quartz crystal, piezoelectricity
Element includes relative inner ring surface and outer ring surface, and conductive layer, the inner ring surface cover of piezoelectric element are provided with inner ring surface and outer ring surface
It is connected in connection member, mass is socketed on the outer ring surface of piezoelectric element.
According to the one side of the utility model embodiment, support also includes support member, and connection member has column knot
Structure, support member are the disk class formation set around connection member and are located at one end of connection member.
The electric charge output element that the utility model embodiment provides, including support, piezoelectric element and mass, piezoelectric element
It is interference fitted between mass and support, is connected without articulamentum, i.e., is that rigidity connects between piezoelectric element, mass and support
Touch, bonding strength is high, can effectively lift the integral rigidity of electric charge output element, then lifts piezoelectric acceleration sensor
Frequency Response and resonance.Meanwhile the first deformation groove for making piezoelectric element be disconnected on ring is provided with the piezoelectric element so that
Piezoelectric element has bigger deformation quantity, the assembling being easy between mass, piezoelectric element and support, improves electric charge output element
Efficiency of assembling.
On the other hand the utility model embodiment proposes a kind of piezoelectric acceleration sensor, including：Above-mentioned electric charge output
Element；Base, there is mounting surface；Connector, electrically connected with the piezoelectric element of electric charge output element；Protective cover, it is defeated around electric charge
Go out element setting, be connected between base and connector；Wherein, electric charge output element is arranged on the mounting surface of base.
According to the other side of the utility model embodiment, piezoelectric acceleration sensor also includes circuit board, circuit board
It is fixed on mass, piezoelectric element and connector are and circuit board electrical connection.
According to the other side of the utility model embodiment, piezoelectric acceleration sensor also includes radome, radome
Snap onto on support, piezoelectric element, mass and circuit board are respectively positioned in radome.
Brief description of the drawings
The feature of the utility model exemplary embodiment, advantage and technique effect described below with reference to the accompanying drawings.
Fig. 1 is the dimensional structure diagram of the electric charge output element of the utility model one embodiment；
Fig. 2 is the cross-sectional view of the electric charge output element of the utility model one embodiment；
Fig. 3 is the structural representation of the support of the utility model one embodiment；
Fig. 4 is the structural representation of the piezoelectric element of the utility model one embodiment；
Fig. 5 is the cross-sectional view of the electric charge output element of the utility model another embodiment；
Fig. 6 is the structural representation of the preload ring of the utility model another embodiment；
Fig. 7 is the structural representation of the mass of the utility model another embodiment；
Fig. 8 is the dimensional structure diagram of the piezoelectric acceleration sensor of the utility model one embodiment；
Fig. 9 is the cross-sectional view of the piezoelectric acceleration sensor of the utility model one embodiment.
Wherein：
1- electric charge output elements；
10- supports；11- connection members；12- support members；13- positioning convex；
20- piezoelectric elements；21- inner ring surfaces；22- outer ring surfaces；23- the first deformation grooves；The first grooves of 24- section；
30- masses；31- inner ring surfaces；32- outer ring surfaces；33- the second deformation grooves；The second grooves of 34- section；
40- preload rings；41- inner ring surfaces；42- outer ring surfaces；
2- bases；201- mounting surfaces；
3- protective covers；
4- connectors；
5- circuit boards；
6- radomes；601- centre bores.
Embodiment
The feature and exemplary embodiment of various aspects of the present utility model is described more fully below.Retouched in detail in following
In stating, it is proposed that many details, to provide to comprehensive understanding of the present utility model.But for people in the art
It will be apparent that the utility model can be implemented in the case of some details in not needing these details for member.
Description to embodiment below is used for the purpose of providing to of the present utility model more preferable by showing example of the present utility model
Understanding.In the the accompanying drawings and the following description, at least part of known features and technology are not illustrated, to avoid to this reality
Unnecessary obscure is caused with new；Also, in order to clear, it may be exaggerated the size of part-structure.In addition, hereinafter retouched
Feature, structure or the characteristic stated can be incorporated in one or more embodiments in any suitable manner.
The noun of locality of middle appearance described below is the direction shown in figure, is not that electric charge of the present utility model is exported
The concrete structure of element is defined.In description of the present utility model, it is also necessary to explanation, unless otherwise clear and definite regulation
And restriction, term " installation ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected；
Can be joined directly together, can also be indirectly connected.For the ordinary skill in the art, on visual concrete condition understands
State concrete meaning of the term in the utility model.
It is defeated according to the electric charge of the utility model embodiment with reference to Fig. 1 to Fig. 7 in order to more fully understand the utility model
Go out element to be described in detail.
As shown in Figure 1 and Figure 2, the utility model embodiment provides a kind of electric charge output element 1, including：Support 10, pressure
Electric device 20 and mass 30, support 10 include connection member 11, and piezoelectric element 20 is loop configuration body, and piezoelectric element 20 is socketed
In connection member 11, the first deformation groove 23 is provided with piezoelectric element 20, the first deformation groove 23 insertion piezoelectric element 20
Side wall, so that piezoelectric element 20 disconnects on ring；Mass 30 is loop configuration body, and mass 30 is socketed in piezoelectric element 20
On, piezoelectric element 20 is interference fitted with connection member 11 and mass 30.
Specifically, as shown in figure 3, support 10 is chromium material, including connection member 11 and support member 12, connection member 11
With cylindrical structure and it is solid, support member 12 is the disk class formation set around connection member 11 and is located at connection
One end of part 11, positioning convex 13, the place of positioning convex 13 are circumferentially provided with along it in the outside wall surface of connection member 11
Highly higher than height where support member 12.As shown in figure 4, piezoelectric element 20 is made up of piezoelectric ceramics, piezoelectric element 20 is circle
Loop configuration body, including relative inner ring surface 21 and outer ring surface 22, conductive layer is provided with inner ring surface 21 and outer ring surface 22, is helped
In the transmission of the electric signal of piezoelectric element 20, conductive layer can be Gold plated Layer.The inner ring surface 21 of piezoelectric element 20 is socketed in connecting portion
On part 11 and lower end is resisted against on positioning convex 13, is easy to the positioning to piezoelectric element 20 to support by positioning convex 13, piezoelectricity
The diameter of the inner ring surface 21 of element 20 is less than the diameter of connection member 11.First deformation groove 23 is bar-shaped trough and along piezoelectric element
20 axis direction extension, forms two the first relative groove sections 24 on piezoelectric element 20 at the first deformation groove 23, two
The distance between first relative groove section 24 is 0.2mm, on the basis of ensureing that piezoelectric element 20 has more large deformation amount, is easy to
Processing and assembling.Mass 30 is tungsten alloy material, and is cirque structure body, including relative inner ring surface 31 and outer ring surface
32, the inner ring surface 31 of mass 30 is socketed on the outer ring surface 22 of piezoelectric element 20, and positioned at the top of support member 12 and is hanged
Sky is set, and the diameter of the inner ring surface 31 of mass 30 is less than the diameter of the outer ring surface 22 of piezoelectric element 20, so that piezoelectric element 20
It is interference fitted with mass 30 and connection member 11.
The electric charge output element 1 that the utility model embodiment provides, its piezoelectric element 20 and mass 30 and support 10
It is interference fitted, is connected without articulamentum, i.e. be firm between piezoelectric element 20, mass 30 and support 10 between connection member 11
Property contact, bonding strength is high, can lift the integral rigidity of electric charge output element 1, then lifts piezoelectric acceleration sensor
Frequency Response and resonance, meanwhile, the first deformation groove for making piezoelectric element 20 be disconnected on ring is provided with piezoelectric element 20
23 so that piezoelectric element 20 has a bigger deformation quantity, the assembling being easy between mass 30, piezoelectric element 20 and support 10,
Improve the efficiency of assembling of electric charge output element 1.First deformation groove 23 is bar-shaped trough and prolonged along the axis direction of piezoelectric element 20
Stretch, be easy to process and enable to piezoelectric element 20 to reduce the influence to the overall performance of electric charge output element 1 when producing deformation.
It is understood that the first deformation groove 23 is not limited to bar-shaped trough, and in some optional embodiments, the first deformation
Groove 23 can be serrate slot or irregular shape groove；First deformation groove 23 is not limited to prolong along the axis direction of piezoelectric element 20
Stretch, can also intersect with the axis antarafacial of piezoelectric element 20, as long as ensureing the side wall of the first deformation groove 23 insertion piezoelectric element 20,
So that piezoelectric element 20 disconnects on ring, make piezoelectric element 20 that there is bigger deformation quantity；Two the first relative grooves
The distance between section 24 is not limited to 0.2mm, in some optional embodiments, is also less than 0.2mm, is preferably
0.1mm, can preferably ensure the performance of electric charge output element 1, while can ensure the deformation quantity requirement of piezoelectric element 20；Pressure
Electric device 20 is not limited to use piezoelectric ceramics, has in some embodiments, can also use monocrystalline, such as quartz crystal；Meanwhile press
Electric device 20, mass 30 are simultaneously not only limited to cirque structure body, in some optional embodiments, can also use polygon
Ring structure body, accordingly, connection member 11 can be polygonal column structure, as long as disclosure satisfy that making for electric charge output element 1
With requiring.
As an alternative embodiment, as shown in Figure 5, Figure 6, electric charge output element 1 still further comprises preload ring
40, preload ring 40 uses titanium alloy material and for cirque structure body, including relative inner ring surface 41 and outer ring surface 42, corresponding pre-
The setting of tight ring 40, as shown in fig. 7, being further provided with the second deformation groove 33 on mass 30, the second deformation groove 33 penetrates
The side wall of mass 30, so that mass 30 disconnects on ring, the second deformation groove 33 is bar-shaped trough and along mass 30
Axis direction extends, and forms two the second relative groove sections 34 on mass 30 at the second deformation groove 33, and two relative
The distance between second groove section 34 is 0.2mm, ensure mass 30 have more large deformation amount on the basis of, be easy to processing and
Assembling.Preload ring 40 is socketed on mass 30, and the diameter of the inner ring surface 41 of preload ring 40 is less than the outer ring surface 32 of mass 30
Diameter so that preload ring 40 is interference fitted with mass 30.
By setting preload ring 40, and the second deformation of relative set groove 33 on mass 30, can be applied to mass 30
Add certain pretightning force, be easy to being fitted to each other for support 10, piezoelectric element 20 and mass 30, and support 10, pressure can be improved
Bonding strength between electric device 20 and mass 30, the integral rigidity of lifting electric charge output element 1, then ensure that piezoelectricity accelerates
The Frequency Response of sensor is spent, the second deformation groove 33 is bar-shaped trough and extended along the axis direction of mass 30, is easy to process
And mass 30 is enabled to reduce the influence to the overall performance of electric charge output element 1 when producing deformation.
It is understood that the second deformation groove 33 is not limited to bar-shaped trough, and in some optional embodiments, the second deformation
Groove 33 can be serrate slot or irregular shape groove, while the second deformation groove 33 is not limited to the axis direction along mass 30
Extension, can also intersect with the axis antarafacial of mass 30, as long as ensureing the side wall of the second deformation groove 33 insertion mass 30, with
Mass 30 is disconnected on ring, make mass 30 that there is bigger deformation quantity；Two the second relative groove sections 34
The distance between be not limited to 0.2mm, in some optional embodiments, be also less than 0.2mm, preferably 0.1mm, can
Preferably ensure the performance of electric charge output element 1, while the deformation quantity requirement of mass 30 can be ensured；The structure of preload ring 40
And cirque structure body is not only limited to, corresponding to the structure of mass 30, it can also correspond to and use polygon ring structure body.
Because the preload ring 40 of the electric charge output element 1 of the present embodiment, mass 30, piezoelectric element 20 and support 10 are adopted
With different materials, therefore there is different linear expansion coefficients, and preload ring 40, mass 30, piezoelectric element 20 and support 10
Between each other using interference fit, i.e., it is between each other rigid contact, electric charge output member can be reduced in hot environment by applying
The fluctuation of the stress of part 1 so that the hot properties of electric charge output element 1 is good.In one embodiment, preload ring 40, mass 30, pressure
The linear expansion coefficient of electric device 20 and support 10 is preferably sequentially reduced, and is ensureing that electric charge output element 1 is special with more preferable high temperature
On the basis of property, the efficiency of assembling of electric charge output element 1 can be further improved.
The utility model embodiment additionally provides a kind of assembly method of electric charge output element 1, for above-described embodiment
Electric charge output element 1 assembled, concrete operation step is as follows：
A. mass 30 is placed in coolant and cooled down, make the deformation retract of mass 30；
B. the mass 30 after deformation retract is taken out, and preload ring 40 is set in the mass 30 after deformation retract
On, due to the deformation retract of mass 30, size accordingly reduces, and now, coordinates shape between preload ring 40 and mass 30 for gap
Formula, be easy to assemble, mass 30 and preload ring 40 be placed in normal temperature environment so that the deformation of mass 30 recover with pretension
Ring 40 is interference fitted；
C. piezoelectric element 20 is placed in coolant cooling, makes the deformation retract of piezoelectric element 20；
D. the piezoelectric element 20 after deformation retract is taken out, and the preload ring 40 after combination and mass 30 is set in shape
Become on the piezoelectric element 20 after shrinking, due to the deformation retract of piezoelectric element 20, size accordingly reduces, now, mass 30 and pressure
Coordinate between electric device 20 for gap, be easy to assemble, preload ring 40, mass 30 and piezoelectric element 20 are placed on normal temperature environment
In so that the deformation of piezoelectric element 20 recovers to be interference fitted with mass 30；
E. support 10 is placed in coolant and cooled down, make the deformation retract of support 10；
F. the support 10 after deformation retract is taken out, and by the preload ring 40 after combination, mass 30 and piezoelectric element 20
It is set in the connection member 11 of the support after deformation retract 10, due to the deformation retract of support 10, size accordingly reduces, now,
The connection member 11 of support 10 coordinates with the gap of piezoelectric element 20, by preload ring 40, mass 30, piezoelectric element 20 and support 10
It is placed in normal temperature environment so that the deformation of connection member 11 is interference fitted after recovering with piezoelectric element 20, completes electric charge output member
The assembling of part 1.
The assembly method for the electric charge output element 1 that the utility model embodiment provides, electric charge is exported by Cold assembly technology
Preload ring 40, mass 30, piezoelectric element 20 and the support 10 of element 1 are assembled, and can be completed pair without other articulamentums
The assembling of electric charge output element 1, more efficient relative in the prior art by the form being fitted to each other of articulamentum, installation
Cycle is short.Simultaneously as preload ring 40, mass 30, piezoelectric element 20 and support 10 use interference fit form, can be lifted
The integral rigidity of electric charge output element 1, then lift the Frequency Response and resonance of piezoelectric acceleration sensor.
It is understood that for the cooling in above-described embodiment to mass 30, piezoelectric element 20 and support 10 not
It is limited to by the way of coolant cools down, in some optional implementations, dry ice, refrigeration plant etc. can also be selected as needed
Mass 30, piezoelectric element 20 and support 10 are cooled down；Meanwhile for the cooled mass 30 for producing deformation retract,
When piezoelectric element 20 and the deformation of support 10 recover, however it is not limited to be placed in normal temperature environment, have in some embodiments, can also incite somebody to action
It is placed on temperature higher than in the environment of coolant temperature so that cooled mass 30, piezoelectric element 20 and the energy of support 10
Enough deformation recovers.
As an alternative embodiment, for mass 30, piezoelectric element 20 in step a, step c and step e
And the chilling temperature of support 10 with when maximum interference amount, the linear expansion coefficient of fit diameter and material is calculated.Tool
The calculation formula of body is：
In formula (1), T is chilling temperature；Maximum interference amount when σ is coordinates, it will be understood that maximum during described cooperation
The magnitude of interference mutually should be in the present embodiment：Maximum interference amount, mass 30 and piezoelectricity when preload ring 40 coordinates with mass 30
Maximum interference amount when maximum interference amount or piezoelectric element 20 and the connection member 11 of support 10 when element 20 coordinates coordinate；ε
For the linear expansion coefficient of material, the linear expansion coefficient of as cooled part respective material, it will be understood that described cooled portion
Part mutually should be mass 30, piezoelectric element 20 or support 10 in the present embodiment；D is fit diameter, i.e., inclusive part
External diameter, it will be understood that described internal member mutually should be mass 30, piezoelectric element 20 or support 10 in the present embodiment.
When it is implemented, σ and d can be according to the preload ring 40 of electric charge output element 1, mass 30, piezoelectric element 20 and support 10
Size calculation draws, ε can table look-up acquisition.
The cool time of mass 30, piezoelectric element 20 and support 10 in step a, step c and step e is by mass
30th, piezoelectric element 20 and 10 respective coefficient of colligation of support and thickest are calculated.Specifically calculation formula is：
T=δ+6 (2)
In formula (2), δ is thickest, i.e., the thickest of cooled part, it will be understood that described is cooled
Part mutually should be mass 30, piezoelectric element 20 or support 10 in the present embodiment, because the connection member 11 of support 10 is
Solid construction, the thickest of connection member 11 are the radius in cross section；α is coefficient of colligation, and as cooled part has with material
The coefficient of colligation of pass, can table look-up acquisition, it will be understood that described cooled part mutually should be mass in the present embodiment
30th, piezoelectric element 20 or support 10.
The freezing of the mass 30 for obtaining electric charge output element 1, piezoelectric element 20 or support 10 is calculated through the above way
Temperature and cooling time, the type of cooling and point of corresponding cool time can be more reasonably configured, further improve electric charge output
The efficiency of assembling of element 1.
The assembly method that the present embodiment provides is that (have preload ring 40 simultaneously for the electric charge output element 1 of embodiment illustrated in fig. 5
The second deformation groove 33 is provided with mass 30) assembling.(do not have for the electric charge output element 1 of Fig. 1, embodiment illustrated in fig. 2
Have preload ring 40, while the second deformation groove 33 be not provided with mass 30) assembly method be same as above, it is corresponding to omit step a, step
The assembling process of coolings and preload ring 40 and mass 30 of the rapid b for mass 30.
As shown in Figure 8, Figure 9, the utility model embodiment additionally provides a kind of piezoelectric acceleration sensor, including base 2,
The electric charge output element 1 of protective cover 3, connector 4 and any of the above-described embodiment, base 2 have mounting surface 201；Electric charge output member
The support member 12 of part 1 is fixed on the mounting surface 201 of base 2, and protective cover 3 is for circular set class formation and around electric charge output member
Part 1 is set.Protective cover 3 is connected between base 2 and connector 4, and one end and the base 2 of specific protective cover 3 connect and fix, another
End connects and fixes with connector 4, and connector 4 electrically connects with the piezoelectric element 20 of electric charge output element 1.In use, pass through base 2
It is connected with Devices to test, the vibration of Devices to test is transferred to by electric charge output element 1 by base 2, electric charge output element 1 will be treated
The vibration conversion of measurement equipment simultaneously carries out signal transmission by connector 4 and external device, to complete to treat the detection of detection device.
The piezoelectric acceleration sensor that the utility model embodiment provides, it is defeated as a result of the higher electric charge of integral rigidity
Go out element 1, can effectively lift the Frequency Response and resonance of piezoelectric acceleration sensor, and hot properties is good, can ensure
The accuracy of testing result.
As an alternative embodiment, piezoelectric acceleration sensor also includes circuit board 5, circuit board 5 is fixed on matter
On gauge block 30, now, piezoelectric element 20 and connector 4 electrically connect with circuit board 5, can be by piezoelectricity by setting circuit board 5
Caused faint electric signal is handled after the stress of element 20 so that piezoelectric acceleration sensor forms voltage output type piezoelectricity
Acceleration transducer, to meet requirement.Meanwhile radome 6 is snapped with over the mount 10, radome 6 is one end open
Tubular structure, over the mount 10, specifically the support member 12 with support 10 is engaged by clamping the openend snapping of radome 6, piezoelectricity
Element 20, mass 30 and circuit board 5 are respectively positioned in radome 6, and in the present embodiment, the outer ring surface 22 of piezoelectric element 20 passes through matter
Gauge block 30 electrically connects with a binding post of circuit board 5.The inner ring surface 21 of piezoelectric element 20 passes through support 10 and radome 6
Electrically connected with another binding post of circuit board 5.The opposite polarity of above-mentioned two binding post, it is open with it on radome 6
Hold and centre bore 601 is provided with corresponding top, the one end for the wire drawn from the binding post of circuit board 5 is by the center
Hole passes and electrically connected with the outer surface of radome 6.By setting radome 6, can avoid outer bound pair electric charge output element 1 and
Circuit board 5 produces signal interference, is further ensured that the accuracy of the testing result of piezoelectric acceleration sensor, while be easy to piezoelectricity
Element 20 electrically connects with circuit board 5.
Although the utility model is described by reference to preferred embodiment, model of the present utility model is not being departed from
In the case of enclosing, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as not depositing
The every technical characteristic being previously mentioned in structural hazard, each embodiment can combine in any way.The utility model
It is not limited to specific embodiment disclosed herein, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
- A kind of 1. electric charge output element, it is characterised in that including：Support, including connection member；Piezoelectric element, it is loop configuration body, is socketed in the connection member, the first deformation is provided with the piezoelectric element Groove, the first deformation groove penetrates the side wall of the piezoelectric element, so that the piezoelectric element disconnects on ring；Mass, it is loop configuration body, is socketed on the piezoelectric element；Wherein, the piezoelectric element is interference fitted with the connection member and the mass.
- 2. electric charge output element according to claim 1, it is characterised in that the insertion matter is provided with the mass Second deformation groove of the side wall of gauge block, so that the mass disconnects on ring, and further set and be socketed in the matter Preload ring on gauge block, the preload ring are interference fitted with the mass.
- 3. electric charge output element according to claim 2, it is characterised in that the first deformation groove be bar-shaped trough and along The axis direction extension of the piezoelectric element, the second deformation groove are bar-shaped trough and prolonged along the axis direction of the mass Stretch.
- 4. electric charge output element according to claim 2, it is characterised in that in first deformation on the piezoelectric element Two the first relative groove sections are formed at groove, the distance between two relative the first groove sections are not more than 0.2mm, institute State and form two the second relative groove sections, two relative the second groove sections on mass at the second deformation groove The distance between be not more than 0.2mm.
- 5. electric charge output element according to claim 2, it is characterised in that the preload ring, mass, piezoelectric element and The linear expansion coefficient of support is sequentially reduced.
- 6. the electric charge output element according to claim 2 to 5 any one, it is characterised in that the piezoelectric element is by pressing Electroceramics or quartz crystal are formed, and the piezoelectric element includes relative inner ring surface and outer ring surface, the inner ring surface and it is described outside Conductive layer is provided with anchor ring, the inner ring surface of the piezoelectric element is socketed in the connection member, and the mass is socketed in On the outer ring surface of the piezoelectric element.
- 7. the electric charge output element according to claim 2 to 5 any one, it is characterised in that the support also includes branch Support part part, the connection member have column structure, and the support member is the disk class formation set around the connection member And positioned at one end of the connection member.
- A kind of 8. piezoelectric acceleration sensor, it is characterised in that including：Electric charge output element described in claim 1 to 7 any one；Base, there is mounting surface；Connector, electrically connected with the piezoelectric element of the electric charge output element；Protective cover, set, be connected between the base and the connector around the electric charge output element；Wherein, the electric charge output element is arranged on the mounting surface of the base.
- 9. piezoelectric acceleration sensor according to claim 8, it is characterised in that also including circuit board, the circuit board Be fixed on the mass, the piezoelectric element and the connector with the circuit board electrical connection.
- 10. piezoelectric acceleration sensor according to claim 9, it is characterised in that also including radome, the radome On the bracket, the piezoelectric element, mass and circuit board are respectively positioned in the radome snapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720669166.1U CN206906415U (en) | 2017-06-09 | 2017-06-09 | Electric charge output element and piezoelectric acceleration sensor |
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| CN201720669166.1U CN206906415U (en) | 2017-06-09 | 2017-06-09 | Electric charge output element and piezoelectric acceleration sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107219377A (en) * | 2017-06-09 | 2017-09-29 | 西人马（厦门）科技有限公司 | Electric charge output element, assembly method and piezoelectric acceleration sensor |
| CN110361563A (en) * | 2019-06-21 | 2019-10-22 | 西人马（厦门）科技有限公司 | Charge output element and piezoelectric acceleration sensor |
| CN113916411A (en) * | 2021-09-18 | 2022-01-11 | 哈尔滨工业大学 | Pre-tightening force measurement method based on global linearization Koopman state observer |
| CN114563596A (en) * | 2021-11-16 | 2022-05-31 | 浙江中控技术股份有限公司 | Anti-interference and high-pressure-resistant triangular shear piezoelectric acceleration sensor |
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2017
- 2017-06-09 CN CN201720669166.1U patent/CN206906415U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219377A (en) * | 2017-06-09 | 2017-09-29 | 西人马（厦门）科技有限公司 | Electric charge output element, assembly method and piezoelectric acceleration sensor |
| WO2018223828A1 (en) * | 2017-06-09 | 2018-12-13 | 西人马（厦门）科技有限公司 | Charge output element, assembly method, and piezoelectric acceleration sensor |
| CN107219377B (en) * | 2017-06-09 | 2019-09-03 | 西人马联合测控（泉州）科技有限公司 | Charge output element, assembly method and piezoelectric acceleration sensor |
| CN110361563A (en) * | 2019-06-21 | 2019-10-22 | 西人马（厦门）科技有限公司 | Charge output element and piezoelectric acceleration sensor |
| CN113916411A (en) * | 2021-09-18 | 2022-01-11 | 哈尔滨工业大学 | Pre-tightening force measurement method based on global linearization Koopman state observer |
| CN113916411B (en) * | 2021-09-18 | 2022-05-27 | 哈尔滨工业大学 | Pre-tightening force measurement method based on global linearization Koopman state observer |
| CN114563596A (en) * | 2021-11-16 | 2022-05-31 | 浙江中控技术股份有限公司 | Anti-interference and high-pressure-resistant triangular shear piezoelectric acceleration sensor |
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