CN104632992A - Damping component, crystal oscillation device, frequency synthesizer and electronic device - Google Patents
Damping component, crystal oscillation device, frequency synthesizer and electronic device Download PDFInfo
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- CN104632992A CN104632992A CN201410849643.3A CN201410849643A CN104632992A CN 104632992 A CN104632992 A CN 104632992A CN 201410849643 A CN201410849643 A CN 201410849643A CN 104632992 A CN104632992 A CN 104632992A
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- damping
- crystal oscillation
- rubber
- vibration
- metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
Abstract
The invention provides a damping component used for reducing the interference of external vibration on a crystal oscillation element. The damping component comprises a base, at least three groups of damping elements installed on the base and used for buffering external vibration, and a supporting element comprising a concave portion and at least three ends, wherein the concave portion is used for supporting the crystal oscillation element, the ends are installed at predetermined positions of the damping elements, and each damping element comprises two damping bodies made of an elastic material and arranged at the upper side and lower side of the ends of the supporting element respectively, and a pressing part which penetrates through the damping bodies and the ends of the supporting element to be connected with the base and is used for pressing the damping bodies to enable the damping bodies to be pressed into a low-rigidness area. In this way, the damping component is simple in structure, light, convenient to install, adjustable in rigidness and damping performance, high in omnidirectional damping performance, high in durability, resistant to high temperature, low temperature and corrosion, not prone to aging, highly practically and broad in application prospect.
Description
Technical field
The invention belongs to vibration damping field, be specifically related to a kind of vibration reducing member, crystal oscillation apparatus, frequency synthesizer and electronic equipment.
Background technique
Crystal oscillator is the core component of electronic equipment, the reference oscillating frequency as this electronic equipment reference signal can be produced, when electronic equipment needs to use multiple signal, frequency synthesizer can be adopted to add reference oscillating frequency, subtract, multiplication and division arithmetic, thus needed for obtaining, a series of frequency signals with certain stability and precision.
In real work, the vibration of the carrier of electronic equipment and the vibration caused by electronic equipment internal devices function all can be delivered on crystal oscillator, thus reduce the stability of the oscillation frequency that crystal oscillator produces, oscillation frequency is drifted about, produce phase noise thus, the normal operation of interference electronic equipment.For aircraft, the vibration of foreign impacts and aircraft itself all can disturb crystal oscillator, cause the generation of phase noise, the phase noise produced can disturb the accurate location of radar, the course of aircraft is offset, and external vibration is larger, and the phase noise of crystal oscillator is larger, the side-play amount in such course is larger, and flight safety is lower.Therefore, vibration damping equipment reasonable in design, is reduced to the level not affecting electronic equipment and normally work by the vibratory impulse of electronic device carrier on crystal oscillator, seems particularly necessary.
In order to reduce the vibratory impulse of crystal oscillator, in the prior art, many employings wire rope vibration damping equipment carries out vibration damping to crystal oscillator, but, wire rope vibration damping equipment can only have damping effect in single direction, although the requirement of electronic message unit can be met in the ordinary course of things, but for higher concerning the stability requirement of signal and that external environment vibration is more violent electronic equipment, the effectiveness in vibration suppression of wire rope vibration damping equipment does not obviously reach demand, and after long-time use, easily there is fracture and lost efficacy in wire rope, endurance quality is poor.
Summary of the invention
The present invention carries out for solving the problem, and by providing a kind of vibration reducing member, reduces external vibration to the interference of crystal oscillation element.
Present invention employs following technological scheme:
Vibration reducing member provided by the invention, has following characteristics, comprising: base; At least three group damping assemblies, are installed on base, for damp external shocks; And supporting component, comprises depressed part and at least three ends, and depressed part is for supporting crystal oscillation element, and end is installed on the pre-position of damping assembly,
Wherein, damping assembly comprises: two damping bodies, is made up of elastic material, is separately positioned on the both sides up and down of end; With, pressing piece, through damping body and end, is connected with base, for exerting pressure to damping body, this damping body is compressed in Low rigidity district.
Vibration reducing member provided by the invention, can also have following characteristics: when any one shape during crystal oscillation element is square body and cuboid, the end of supporting component is at least four, and damping assembly is at least four groups.
Vibration reducing member provided by the invention, can also have following characteristics: the end of supporting component is with the center of gravity of crystal oscillation element for symmetry center is arranged, and all ends and the center of gravity of crystal oscillation element are positioned at same plane.
Vibration reducing member provided by the invention, following characteristics can also be had: pressing piece and base are screwed together, the compression carrying out in various degree to damping body can be moved up and down by respect thereto, to regulate the pre compressed magnitude of damping body, make the rigidity of damping body be positioned at Low rigidity district.
Vibration reducing member provided by the invention, can also have following characteristics: damping body is metal-rubber.
Further, present invention also offers a kind of crystal oscillation apparatus, there is following characteristics, have: crystal oscillation element; And as the vibration reducing member above as described in any one, for supporting and reducing the interference of external vibration to this crystal oscillation element.
Further, present invention also offers a kind of frequency synthesizer, have: converter plant, and to be connected with converter plant, crystal oscillation apparatus described in last item, crystal oscillation apparatus is for generation of the reference oscillating frequency as frequency conversion assembly reference signal, and converter plant is used for adding this reference oscillating frequency, subtract, multiplication and division arithmetic, thus generates a series of frequency signal.
Further, present invention also offers a kind of electronic equipment, there is body and be arranged on the crystal oscillation apparatus on body.
Further, present invention also offers a kind of electronic equipment, there is body and be arranged on the frequency synthesizer on body.
Invention effect and effect
According to vibration reducing member provided by the invention, comprising: base; Be installed at least three group damping assemblies on base, for damp external shocks; And supporting component, comprises depressed part and at least three ends, depressed part is for supporting crystal oscillation element, and end is installed on the pre-position of damping assembly, wherein, damping assembly comprises: two damping bodies, is made up of elastic material, is separately positioned on the both sides up and down of end; With, pressing piece, through damping body and end, is connected with base, for exerting pressure to damping body, this damping body being compressed in Low rigidity district, making vibration reducing member provided by the invention have following beneficial effect:
1. rigidity and the damping that can realize vibration reducing member are adjustable: utilize being threaded of the non-linear relation of metal-rubber rigidity and damping and distortion and pressing piece and lock sheet, when metal-rubber is in Low rigidity district, the degree of rotation of pressing piece is different, the pre compressed magnitude of metal-rubber is different, cause the slippage degree wiry in metal-rubber different, the energy of the system that the dry friction produced between wire dissipates is different, thus the rigidity played is different with damping regulating action;
2. can realize omnidirectional's vibration damping: due to the structure of metal-rubber, no matter which direction is dynamic excitation power come from, and metal-rubber all can be compressed, and causes the dry friction that between wire, slippage produces to absorb in a large number or dissipative system energy, reaches the object of vibration isolation and buffering;
3. avoid coupled vibrations: the center of gravity of vibration reducing member and the center of gravity of crystal oscillation element are positioned at same plane, effectively avoid the coupled vibrations of crystal oscillation element, improve damping property;
4. the present invention adopts metal-rubber as damping body, due to the anti-high and low-temp of metal rubber material itself, not easily aging, the advantage such as intensity is high, damping is large, this vibration reducing member is made to have excellent in durability, high temperature resistant, low temperature, corrosion resistance, not easily the advantage such as aging.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electronic equipment in embodiments of the invention one.
Fig. 2 is the perspective view of the crystal oscillation apparatus in embodiments of the invention one;
Fig. 3 is the stereochemical structure explosive view of the crystal oscillation apparatus in embodiments of the invention one;
Fig. 4 is the plan view of the crystal oscillation apparatus in embodiments of the invention one;
Fig. 5 is the cross-sectional view of the crystal oscillation apparatus in Fig. 3;
Fig. 6 is metal-rubber load-displacement curves figure of the present invention;
Fig. 7 is the effectiveness in vibration suppression figure of vibration reducing member of the present invention;
Fig. 8 is the perspective view of the crystal oscillation apparatus in embodiments of the invention two;
Fig. 9 is the stereochemical structure explosive view of the crystal oscillation apparatus in embodiments of the invention two; And
Figure 10 is the internal structure schematic diagram of the crystal oscillation apparatus in embodiments of the invention two.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Embodiment one
Fig. 1 is the structural representation of the electronic equipment of the present embodiment.
As shown in Figure 1, electronic equipment 100 comprises body 400 and fixed installation crystal oscillation apparatus 200 thereon.Crystal oscillation apparatus 200 comprises crystal oscillation element 10 and fixed crystal oscillating element 10 and for reducing the vibration reducing member 300 of external vibration to the interference of this crystal oscillation element, the mode that crystal oscillation element 20 matches with bolt and stud with vibration reducing member 300 is connected.The mode that vibration reducing member 300 also matches with bolt and stud with body 400 is connected, and indirectly crystal oscillation element 20 is fixed in electronic equipment.
Fig. 2 is the perspective view of the crystal oscillation apparatus of the present embodiment.
Fig. 3 is the stereochemical structure explosive view of the crystal oscillation apparatus of the present embodiment.
Fig. 4 is the plan view of the crystal oscillation apparatus in the present embodiment.
Fig. 5 is the cross-sectional view in crystal oscillation apparatus A-A direction in Fig. 4.
As shown in Figures 2 to 5, crystal oscillation apparatus 200 crystal oscillation element 10 that comprises vibration reducing member 300 and be fixed thereon.Vibration reducing member 300 comprises damping assembly 1, supporting component 2 and base 3, and supporting component 2 is connected with base 3 by damping assembly 1, and bottom and the base 3 of supporting component 2 leave gap, do not contact with each other.
Damping assembly 1 totally four groups, comprises pressing piece 11, damping body 12, just overlaps 13.Pressing piece 11 is T-shaped, comprises the cap portion 111 and bar portion 112 that are connected to each other; Damping body 12 is the metal-rubber of cylinder type, comprise respectively along laterally zygomorphic first metal-rubber 121 and second metal-rubber 122 in angle of supporting component 2, the bar portion 112 of pressing piece 11 is screwed together by lock sheet 31 and base 3 through the first metal-rubber 121 and the second metal-rubber 122, cap portion 111 is pressed in the upper end of the first metal-rubber 121, firm cover 13 comprises the first firm cover 131 and second and just overlaps 132, lay respectively at the periphery of the first metal-rubber 121 and the second metal-rubber 122, and intermediate portion caves inward, be embedded in metal-rubber.
Supporting component 2 comprises depressed part 21 and is arranged at four ends 22 of depressed part periphery, crystal oscillation element 10 is positioned in depressed part 21 by fastening piece, the periphery of depressed part 21 has four ends 22 with penetration hole arranged for symmetry center with the center of gravity of crystal oscillation element 10, end 22 respectively outwardly, be installed on the periphery of the first metal-rubber 121 and the second metal-rubber 122, and between end 22 and metal-rubber, fill in just cover 13, with the position of anchor portion 22.Meanwhile, the center of gravity of end 22 and the center of gravity of crystal oscillation element 10 are positioned in same level all the time.
The bar portion 112 of pressing piece 11 and base 3, to be screwed together, can move up and down along base 3, for regulating the pre compressed magnitude of metal-rubber 12, thus regulate vibration damping equipment rigidity and damping to suitable value, to obtain best effectiveness in vibration suppression.After to be regulated, fixing by lock sheet 31 reinforcing bar portion 112 and base 3, to keep the optimal compression amount of metal-rubber 12.Meanwhile, the bottom of base 3 arranges the mouth 32 passed for stud, and the mode that the body of base 3 and electronic equipment is matched by bolt and stud is fixed connection.
During assembling vibration reducing member 300, first the first metal-rubber 121 is enclosed within the upper end, bar portion 112 of pressing piece 11, first has just overlapped the periphery that 131 are enclosed within metal-rubber 121, then by the penetration hole of bar portion 112 through end 22, put the second metal-rubber 122 and second again and just overlap 132, then lock sheet 31 is passed in bar portion 112, be connected with base 3, finally finely tune first and just overlapped the position that 131 and second have just overlapped 132, anchor portion 22.The inner side of the first firm cover 131 and the second firm cover 132 is embedded in metal-rubber, and outside and end 22 close contact, to reach the object of fixing metal rubber 12 and supporting component 2.
Fig. 6 is the load-displacement curves figure of the metal-rubber of the present embodiment.
As shown in Figure 6, when acting on the load force on metal-rubber and being different, metal-rubber different by compression displacement, thus cause slippage degree wiry in metal-rubber different, then the rigidity that shows of metal-rubber is also different.According to metal-rubber different by under compression displacement the rigidity that shows, be linear region, Low rigidity district and high stiffness region by the state demarcation residing for metal-rubber.When being less than 0.2mm by compression displacement, metal-rubber is in linear region; When by compression displacement between 0.2mm and 2mm time, metal-rubber is in Low rigidity district; When being greater than 2mm by compression displacement, metal-rubber is in high stiffness region.
In linear region, the load force acted on metal-rubber is less, its by compression displacement and load force linear, the distortion of metal-rubber mainly himself spiral-shaped stand under load distortion and almost without slippage between wire, therefore the rigidity of metal-rubber is almost constant, and damping is very little; Along with the continuous increase of the load force acted on metal-rubber, the wire in metal-rubber starts the slippage occurred in various degree, and it is no longer linear with the load force be applied to it by compression displacement, but becomes mild gradually.Now, the friction meeting dissipation energy that between wire, mutual slippage produces, makes the damping of metal-rubber increase and make it be in Low rigidity district, in certain software feature; Continue to increase when acting on the load force on metal-rubber, when making to be greater than 2mm by compression displacement, the wire in metal-rubber extrudes mutually, sliding phenomenon weakens, and metal-rubber starts again to present hardware features, and rigidity becomes large, damping diminishes, and now, metal-rubber is in high stiffness region.
Therefore with the vibration damping equipment that metal-rubber is made, when displacement constantly changes, when namely the decrement of metal-rubber changes, metal-rubber can present different rigidity and damping characteristic.Because of when linear region and high stiffness region, metal-rubber rigidity is too large, can not realize vibration damping, therefore only having by regulating decrement, when making metal-rubber be in Low rigidity district, could tackle extraneous vibration, alleviating the impact of extraneous vibration on crystal oscillation element.
Fig. 7 is the effectiveness in vibration suppression figure of the vibration reducing member in the present embodiment.
As shown in Figure 7, abscissa in effectiveness in vibration suppression figure is external excitation frequency, and the acceleration transmissibility η in y coordinate is the ratio of crystal oscillation element response and external excitation frequency, when the value of η is less than 1, illustrate that vibration damping equipment serves damping effect, the less damping effect of value of η is better.
As shown in Figure 7, when external excitation frequency is greater than 100Hz, the value of η is just less than 1, illustrates that the effectiveness in vibration suppression of vibration reducing member 300 pairs of crystal oscillation element 10 is obvious; When external excitation frequency is near 1000Hz time (namely, the most often run in practical application interfering frequency), the value of η is down to 0.1, and effectiveness in vibration suppression highly significant is described.
In the present embodiment, the material of damping body is metal-rubber, to meet the requirement of military industry field fatigue resistance and corrosion resistance, when the vibration reducing member that the present embodiment provides is for requiring lower civil area, damping body can also replace with silicone rubber or other General Purpose Rubber, to simplify manufacturing step and to reduce manufacture cost.
In the present embodiment, metal-rubber can adopt 304 stainless steel steel wires, 0Cr18Ni9Ti Austenitic Stainless Steel steel wire, prepared by 1Cr18Ni9Ti Austenitic Stainless Steel steel wire.
The preferred stainless steel material of material of the pressing piece in the present embodiment, just cover, supporting component, lock sheet, base, to meet the requirement of military project durability and corrosion resistance.When being used in the corrosivity of material and the not high civil area of life requirement, also can adopting plastics and aluminum alloy material, utilizing the characteristic that material is easily moulding, reducing device manufacture cost simultaneously.
Vibration reducing member in the present embodiment, also can be applied in other electronic equipments and carry out vibration damping to the parts in it, as hard disk, power cabinet, electronics rack etc.
The crystal oscillation element that vibration reducing member in the present embodiment is applicable to common shape is cuboid or square body carries out vibration damping, supporting component is designed to be connected with vibration reducing member with four ends outwardly, when crystal oscillation element is the uncommon shape such as circular, triangle or polygonal, supporting component can also be designed to diametrically symmetrically arranged two ends, forms three ends of an equilateral triangle or the position according to crystal oscillation element profile design end.
Crystal oscillation apparatus in the present embodiment is only directly installed in electronic message unit under a few cases, usually be installed in the frequency synthesizer of electronic message unit, crystal oscillation apparatus, by being fixed on by base in the reserved box of frequency synthesizer or electronic message unit, completes the installation of crystal oscillation apparatus.
Frequency synthesizer comprises interconnective converter plant and crystal oscillation apparatus, the reference oscillating frequency that crystal oscillation apparatus produces is used for the reference signal as converter plant, converter plant carries out addition subtraction multiplication and division arithmetic to reference oscillating frequency, produces the frequency signal needed for electronic message unit.
Embodiment's effect and effect
According to the vibration reducing member that the present embodiment provides, comprising: base; Be installed at least three group damping assemblies on base, for damp external shocks; And supporting component, comprises depressed part and at least three ends, depressed part is for supporting crystal oscillation element, and end is installed on the pre-position of damping assembly, wherein, damping assembly comprises: two damping bodies, is made up of elastic material, is separately positioned on the both sides up and down of end; With, pressing piece, through damping body and end, is connected with base, and for exerting pressure to damping body, this damping body is compressed in Low rigidity district, the vibration reducing member that the present embodiment is provided has following beneficial effect:
1. rigidity and the damping that can realize vibration reducing member are adjustable: utilize being threaded of the non-linear relation of metal-rubber rigidity and damping and distortion and pressing piece and lock sheet, when metal-rubber is in Low rigidity district, the degree of rotation of pressing piece is different, the pre compressed magnitude of metal-rubber is different, cause the slippage degree wiry in metal-rubber different, the energy of the system that the dry friction produced between wire dissipates is different, thus the damping regulating action played is different;
2. can realize omnidirectional's vibration damping: due to the structure of metal-rubber, no matter which direction is dynamic excitation power come from, and metal-rubber all can be compressed, and causes the dry friction that between wire, slippage produces to absorb in a large number or dissipative system energy, reaches the object of vibration isolation and buffering;
3. avoid coupled vibrations: the center of gravity of vibration reducing member and the center of gravity of crystal oscillation element are positioned at same plane, effectively avoid the coupled vibrations of crystal oscillation element, improve damping property;
4. the present embodiment adopts metal-rubber as damping body, due to the anti-high and low-temp of metal rubber material itself, not easily aging, the advantage such as intensity is high, damping is large, this vibration reducing member is made to have excellent in durability, high temperature resistant, low temperature, corrosion resistance, not easily the advantage such as aging.
In the present embodiment, in order to the convenience of different experiments is carried out in laboratory, angle 21 and firm cover 13 are separated, metal-rubber 12 and just cover 13 are divided into the two-part at the two ends being up and down positioned at angle 21, when testing, during assembling device respectively, first metal-rubber 121 and firm cover 131 are enclosed within the upper end, bar portion 112 of pressing piece 11, then bar portion 121 is inserted in angle 21, then puts metal-rubber 122 and just overlapped 132, finally bar portion is connected with base 3 by screw thread.During practical application, the pre compressed magnitude of metal-rubber mixes up, and vibration damping equipment no longer regulates in whole application process, therefore, angle 21 and firm cover can be integrated, increase the convenience of device assembling, see embodiment two.
Embodiment two
In the present embodiment two, for identical structure in embodiment one, give identical symbol, and omit identical explanation.
Fig. 8 is the perspective view of the crystal oscillation apparatus in the present embodiment.
Fig. 9 is the stereochemical structure explosive view of the crystal oscillation apparatus in the present embodiment.
Figure 10 is the internal structure schematic diagram of the crystal oscillation apparatus in the present embodiment.
As shown in Fig. 8 to Figure 10, the crystal oscillation element 10 that crystal oscillation apparatus 500 comprises crystal oscillation vibration damping equipment 600 and is fixed thereon.Vibration reducing member 400 comprises damping assembly 4, supporting component 5 and base 3.Vibration reducing member 4 comprises pressing piece 11, metal-rubber 41 and lock sheet 31, and metal-rubber 41 is cylinder type, is divided into two-part metal-rubber 411 and 412 two-part.Four ends 51 of supporting component 5 are by the end 22 in embodiment one and just cover 13 is one-body molded obtains, and are directly enclosed within the periphery of metal-rubber 411 and 412, fixing metal rubber, and cave inward and be embedded in metal-rubber 41.
The effect of embodiment two and effect
The vibration reducing member that the present embodiment provides, by be suitable for laboratory use vibration damping equipment in supporting component in four angles and just overlapped integration, be directly fixed on outside metal-rubber, simplify the assembly program of vibration damping equipment, be particularly useful for not needing in actual application in the occasion regulated vibration damping equipment.
The invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various change to limit and in the spirit and scope of the present invention determined in described claim; these changes are apparent, and all innovation and creation utilizing the present invention to conceive are all at the row of protection.
Claims (9)
1. a vibration reducing member, for reducing the interference of external vibration to crystal oscillation element, is characterized in that, comprise:
Base;
At least three group damping assemblies, are installed on described base, for cushioning described external vibration; And
Supporting component, comprises depressed part and at least three ends, and described depressed part is for supporting described crystal oscillation element, and described end is installed on the pre-position of described damping assembly,
Wherein, described damping assembly comprises:
Two damping bodies, are made up of elastic material, are separately positioned on the both sides up and down of described end; With
Pressing piece, through described damping body and described end, is connected with described base, for exerting pressure to described damping body, this damping body is compressed in Low rigidity district.
2. vibration reducing member according to claim 1, is characterized in that:
Wherein, when any one shape during described crystal oscillation element is square body and cuboid, the end of described supporting component is at least four,
Described damping assembly is at least four groups.
3. vibration reducing member according to claim 1, is characterized in that:
Wherein, the end of described supporting component is with the center of gravity of described crystal oscillation element for symmetry center is arranged, and all described ends and the center of gravity of described crystal oscillation element are positioned at same plane.
4. vibration reducing member according to claim 1, is characterized in that:
Wherein, described pressing piece and described base are screwed together, and can move up and down the compression carrying out in various degree to described damping body by relatively described base, to regulate the pre compressed magnitude of described damping body, make the rigidity of described damping body be positioned at Low rigidity district.
5. vibration reducing member according to claim 1, is characterized in that:
Wherein, described damping body is metal-rubber.
6. a crystal oscillation apparatus, is characterized in that, has:
Crystal oscillation element; And
Vibration reducing member, for supporting and reducing the interference of external vibration to this crystal oscillation element,
Wherein, described vibration reducing member is as in claim 1-5 as described in any one.
7. a frequency synthesizer, is characterized in that, has:
Crystal oscillation apparatus, for generation of reference oscillating frequency; With
Converter plant, for adding this reference oscillating frequency, subtracting, multiplication and division arithmetic, thus generates a series of frequency signal,
Wherein, described crystal oscillation apparatus as claimed in claim 6.
8. an electronic equipment, is characterized in that, has:
Body; And
Be arranged on the crystal oscillation apparatus on this body,
Wherein, described crystal oscillation apparatus as claimed in claim 6.
9. an electronic equipment, is characterized in that, has:
Body; And
Frequency synthesizer is on the body installed,
Wherein, described frequency synthesizer as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410849643.3A CN104632992B (en) | 2014-06-15 | 2014-12-31 | Damping component, crystal oscillation apparatus, frequency synthesizer and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410263388.4A CN104061277A (en) | 2014-06-15 | 2014-06-15 | Metal rubber crystal oscillator damping device |
| CN2014102633884 | 2014-06-15 | ||
| CN201410849643.3A CN104632992B (en) | 2014-06-15 | 2014-12-31 | Damping component, crystal oscillation apparatus, frequency synthesizer and electronic equipment |
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| CN104632992A true CN104632992A (en) | 2015-05-20 |
| CN104632992B CN104632992B (en) | 2017-12-05 |
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| CN201410263388.4A Pending CN104061277A (en) | 2014-06-15 | 2014-06-15 | Metal rubber crystal oscillator damping device |
| CN201410849643.3A Active CN104632992B (en) | 2014-06-15 | 2014-12-31 | Damping component, crystal oscillation apparatus, frequency synthesizer and electronic equipment |
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| CN104061277A (en) | 2014-09-24 |
| CN104632992B (en) | 2017-12-05 |
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