CN201616813U - Piezoelectric ceramic energy-trap type oscillator - Google Patents
Piezoelectric ceramic energy-trap type oscillator Download PDFInfo
- Publication number
- CN201616813U CN201616813U CN2010200494013U CN201020049401U CN201616813U CN 201616813 U CN201616813 U CN 201616813U CN 2010200494013 U CN2010200494013 U CN 2010200494013U CN 201020049401 U CN201020049401 U CN 201020049401U CN 201616813 U CN201616813 U CN 201616813U
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- oscillator
- piezoelectric ceramic
- trap type
- flaky
- center
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Abstract
The utility model relates to a piezoelectric ceramic energy-trap type oscillator, which comprises a flaky oscillator, wherein two symmetrically point electrodes (2) are arranged at the centers of the upper surface and the lower surface of the flaky oscillator; the point electrodes are led out by an extraction electrode (3); the effective oscillation area at the center of the flaky oscillator is made of a piezoelectric ceramic material block (5); the other areas (1) of the flaky oscillator is made of ordinary ceramic material; and the piezoelectric ceramic material block is inlayed at the center of the flaky oscillator. For the piezoelectric ceramic energy-trap type oscillator, only the effective oscillation area at the center of the flaky oscillator is made of the piezoelectric ceramic material, and the effective oscillation area is a little larger than the point electrodes and is less than 1/6 area of the whole flaky oscillator, thereby greatly reducing the dosage of the piezoelectric ceramic material. In addition, the ordinary ceramic and the metal extraction electrode have better binding force, thereby reducing the phenomena of loosening and falling off of the extraction electrode and improving the rate of grated product of the piezoelectric ceramic energy-trap type oscillator.
Description
Technical field
The utility model relates to a kind of structure of oscillator of piezoelectric ceramic frequency device, a kind of piezoelectric ceramic energy trap type oscillator.
Background technology
The piezoelectric ceramic frequency device selects as frequency and frequency control device is widely used in fields such as communication, TV, computer, industrial automation.The critical component of piezoelectric ceramic frequency device is a piezoelectric ceramic vibrator.Usually, piezoelectric ceramic energy trap type oscillator is to make two symmetrical mutually metal electrodes as vibrating electrode on a piezoelectric ceramic plate two sides, and vibrating electrode is drawn by extraction electrode.Vibrating electrode also is called point electrode, and the area of point electrode is very little, only accounts for the minimum part of monoblock piezoelectric ceramic plate, and the vibration effective coverage at the center of oscillator is bigger slightly than the area of point electrode, and is big approximately by about 20%.Piezoceramic material commonly used is leaded pottery, reduces plumbous consumption, does not even use lead, is the problem that the manufacturing of current piezoelectric ceramic frequency device must be considered.At present existing lead-free piezoelectric ceramic, but the price of leadless piezoelectric ceramics is higher, and cost is higher when making the piezoelectric ceramic frequency device with it.
In addition, the extraction electrode of piezoelectric ceramic vibrator also is produced on the same piezoelectric ceramic plate, because the adhesion of piezoceramic material and metal extraction electrode is not fine, adds processing such as high temperature, bonding, and regular meeting produces defectives such as loose or dislocation.
Summary of the invention
The utility model is intended to propose a kind of structure of using the piezoelectric ceramic energy trap type oscillator of a small amount of piezoceramic material.
This piezoelectric ceramic energy trap type oscillator comprises a sheet oscillator, there are two point electrodes of symmetry mutually at the upper surface of sheet oscillator and the center of lower surface, above-mentioned point electrode is drawn by extraction electrode, the vibration effective coverage at sheet oscillator center is the piezoceramic material piece, other zone of sheet oscillator is general ceramic material, and above-mentioned piezoceramic material piece is embedded in the center of sheet oscillator.
This piezoelectric ceramic energy trap type oscillator is owing to only adopt piezoceramic material in the vibration effective coverage at the center of sheet oscillator, the vibration effective coverage is more slightly bigger than point electrode, less than 1/6 of whole sheet oscillator, thereby can significantly reduce the consumption of piezoceramic material.And, owing to the good bonding strength of general pottery, can reduce the phenomenon of extraction electrode loose or dislocation with the metal extraction electrode, improve the percentage of A-class goods of piezoelectric ceramic energy trap type oscillator.
Description of drawings
Fig. 1 is the structure chart of the piezoelectric ceramic energy trap type oscillator of prior art;
Fig. 2 is the structure chart of the piezoelectric ceramic energy trap type oscillator that the utility model proposes;
Fig. 3 is the profile of piezoelectric ceramic energy trap type oscillator shown in Figure 2;
Fig. 4 is the another kind of structure chart of piezoelectric ceramic energy trap type oscillator;
Fig. 5 is the cylindrical piezoelectric ceramic rod;
Fig. 6 is a square column type piezoelectric ceramic rod;
Fig. 7 is the ceramic wafer that has semi-cylindrical groove;
Fig. 8 is the ceramic wafer that has the square column type groove;
Fig. 9 is adhered to schematic diagram in the groove on the ceramic wafer for the piezoelectric ceramic rod;
Figure 10 has the ceramic wafer of groove for the two sides;
Figure 11 is a composite ceramic block;
Figure 12 is compound ceramics.
Embodiment
As shown in Figure 1, the structure of existing piezoelectric ceramic energy trap type oscillator is to make two symmetrical mutually point electrodes 2 as vibrating electrode on the two sides of a piezoelectric ceramic plate 9, and vibrating electrode draws 3 by extraction electrode and goes out.The vibration effective coverage 4 of piezoelectric ceramic plate 9 (dotted line inner region among the figure) is more slightly bigger than point electrode 2, less than 1/6 of whole sheet oscillator.
The structure of this piezoelectric ceramic energy trap type oscillator that the utility model proposes as shown in Figures 2 and 3, it comprises a sheet oscillator, there are two mutually point electrodes 2 of symmetry at the upper surface of sheet oscillator and the center of lower surface, above-mentioned point electrode is drawn by extraction electrode 3.The sheet oscillator is made up of two parts: the vibration effective coverage at sheet oscillator center is a piezoceramic material piece 5, and other zone 1 of sheet oscillator is general ceramic material, and piezoceramic material piece 5 is embedded in the center of sheet oscillator.
As shown in Figure 2, the piezoceramic material piece 5 of the vibration effective coverage of this piezoelectric ceramic energy trap type oscillator can be circle.
As shown in Figure 4, the piezoceramic material piece 5 of the vibration effective coverage of this piezoelectric ceramic energy trap type oscillator also can be square.
This piezoelectric ceramic energy trap type oscillator can be made with following method:
A, make the piezoelectric ceramic rod of square column type cylindrical or shown in Figure 6 shown in Figure 5 of piezoelectric ceramic, the sectional area of piezoelectric ceramic rod is a bit larger tham the effective area in oscillator vibration district, the piezoelectric ceramic rod can be made of the leaded piezoceramic material of lead titanates and so on, also can use niobic acid strontium bismuth (SrBi
2Nb
2O
9), bismuth titanium niobate (Bi
3-xM
xNb
1+yTi
1-yO
9) and so on lead-free piezoceramic material make.
B, as shown in Figure 7 makes general ceramic wafer 6 with conventional ceramic.The width of general ceramic wafer is identical with the length of piezoelectric ceramic rod, and the thickness of general ceramic wafer is a bit larger tham the width of oscillator.General ceramic wafer is carried out thickness and end surface grinding, surface at general ceramic wafer makes several parallel grooves 7, the cross sectional shape of groove is consistent with the cross section that A goes on foot prepared piezoelectric ceramic rod, the size of groove is bigger slightly than the cross section of piezoelectric ceramic rod, the length that the centre-to-centre spacing between two adjacent grooves is a bit larger tham an oscillator.General ceramic wafer can be made of the lead-free general ceramic material of titanium magnesium porcelain and so on.
C, as shown in Figure 9, glue into an A in B goes on foot every groove of prepared general ceramic wafer with glass glaze and to go on foot prepared piezoelectric ceramic rod 8, again the general ceramic wafer of bonding piezoelectric ceramic rod is folded mutually, is bonded together with the glass glaze multilayer, pressurized, heated is solidified, and becomes composite ceramic block as shown in figure 11.
D, C is gone on foot gained composite ceramic block along cutting into the thick slightly compound ceramics of thickness of ratio oscillator as shown in figure 12 with the perpendicular direction of the axis of piezoelectric ceramic rod, again attrition process is carried out on compound ceramics surface.
E, the compound ceramics of D step gained is carried out sputter, polarization, printing, corrosion treatment, make extraction electrode and point electrode.
F, the compound ceramics that E is gone on foot gained cut into satisfactory single energy trap type piezoelectric vibrator shown in Figure 2.
In the manufacture process of above-mentioned piezoelectric ceramic energy trap type oscillator, when the cross section of piezoelectric ceramic rod is shown in Figure 5 when cylindrical, groove on the general ceramic wafer 6 should be made the cross section for semicircle, fluted on the lower surface of the general ceramic wafer of the superiors in the composite ceramic block, fluted on the upper surface of undermost general ceramic wafer, its structure and all needs flutedly as shown in Figure 6 on the upper and lower surface of the general ceramic wafer at middle position, its structure as shown in Figure 9.When the cross section of piezoelectric ceramic rod is square column type shown in Figure 6, square also can be processed in the cross section of the groove on the general ceramic wafer, and in the composite ceramic block, machined grooves not on the general ceramic wafer of the superiors processes groove as shown in Figure 8 on the upper surface of remaining general ceramic wafer.
In the manufacture method of this piezoelectric ceramic energy trap type oscillator, when the cross section of piezoelectric ceramic rod is square, square also can be processed into half in the cross section of the groove on the general ceramic wafer 6, at this moment, fluted on the lower surface of the general ceramic wafer of the superiors in the composite ceramic block, fluted on the upper surface of undermost general ceramic wafer, all fluted on the upper and lower surface of the general ceramic wafer at middle position.
Claims (3)
1. piezoelectric ceramic energy trap type oscillator, comprise a sheet oscillator, there are two point electrodes (2) of symmetry mutually at the upper surface of sheet oscillator and the center of lower surface, above-mentioned point electrode is drawn by extraction electrode (3), the vibration effective coverage that it is characterized in that sheet oscillator center is piezoceramic material piece (5), other zone (1) of sheet oscillator is general ceramic material, and above-mentioned piezoceramic material piece is embedded in the center of sheet oscillator.
2. piezoelectric ceramic energy trap type oscillator as claimed in claim 1, the piezoceramic material piece (5) that it is characterized in that described vibration effective coverage is for circular.
3. piezoelectric ceramic energy trap type oscillator as claimed in claim 1 is characterized in that the piezoceramic material piece (5) of described vibration effective coverage is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200494013U CN201616813U (en) | 2010-01-05 | 2010-01-05 | Piezoelectric ceramic energy-trap type oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200494013U CN201616813U (en) | 2010-01-05 | 2010-01-05 | Piezoelectric ceramic energy-trap type oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616813U true CN201616813U (en) | 2010-10-27 |
Family
ID=43003174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200494013U Expired - Lifetime CN201616813U (en) | 2010-01-05 | 2010-01-05 | Piezoelectric ceramic energy-trap type oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368518A (en) * | 2012-03-27 | 2013-10-23 | 精工爱普生株式会社 | Resonator element, resonator, electronic device, electronic apparatus, and mobile object |
-
2010
- 2010-01-05 CN CN2010200494013U patent/CN201616813U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368518A (en) * | 2012-03-27 | 2013-10-23 | 精工爱普生株式会社 | Resonator element, resonator, electronic device, electronic apparatus, and mobile object |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101027 |