CN201402323Y - Vibration-absorptive structure of radar crystal oscillator - Google Patents
Vibration-absorptive structure of radar crystal oscillator Download PDFInfo
- Publication number
- CN201402323Y CN201402323Y CN2009201456162U CN200920145616U CN201402323Y CN 201402323 Y CN201402323 Y CN 201402323Y CN 2009201456162 U CN2009201456162 U CN 2009201456162U CN 200920145616 U CN200920145616 U CN 200920145616U CN 201402323 Y CN201402323 Y CN 201402323Y
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- vibration
- crystal oscillator
- thin
- vibration damping
- absorptive
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Abstract
The utility model belongs to vibration-absorptive technology and relates to an improvement on the vibration-absorptive structure of a radar crystal oscillator. The vibration-absorptive structure comprises a vibration-absorptive shell and a crystal oscillator subassembly (3) and is characterized in that the shape of the crystal oscillator subassembly (3) and the geometric shape of an inner cavity of the vibration-absorptive shell are similar rectangular hexahedrons; and a thin-wall vibration-absorptive hemisphere (4) made from silicon rubber is arranged between each outer surface of the crystaloscillator subassembly (3) and each corresponding inner surface of the inner cavity of the vibration-absorptive shell. The vibration-absorptive structure greatly improves vibration-absorptive effectand reduces the dimension simultaneously.
Description
Technical field
The utility model belongs to damping technology, relates to the improvement to radar crystal oscillator vibration-proof structure.
Background technology
In the design and application of airborne radar frequency source, mechanical vibration are very big to the influence factor of its index, and especially the phase noise influence to radiofrequency signal is very big.Under vibration condition, do not take under the situation of vibration reducing measure this index about 20dB that descends, cause the radar system detectable region to narrow down, the detection sensitivity reduction.Causing the main cause that radiofrequency signal phase noise index worsens is owing to the influence of mechanical vibration to the crystal oscillator device of frequency source inside.Existing crystal oscillator vibration-proof structure, the filled and process material carries out vibration damping between vibration damping housing and the crystal oscillator assembly in the vibration damping housing.Its shortcoming is: effectiveness in vibration suppression is bad, and size is big.
Summary of the invention
The purpose of this utility model is: propose the little radar crystal oscillator vibration-proof structure of a kind of good damping result, size to reduce the influence of vibration to the crystal oscillator device of frequency source inside.
The technical solution of the utility model is: the vibration-proof structure of radar crystal oscillator, comprise a vibration damping housing that connects to form by box body and lid with rectangular hexahedron inner chamber, and it is the crystal oscillator assembly of rectangular hexahedron that profile is arranged in the vibration damping housing; It is characterized in that, the profile of crystal oscillator assembly is similar rectangular hexahedron to the geometric configuration of vibration damping housing inner chamber, the thin-walled vibration damping hemisphere that between each inside surface of each outside surface of crystal oscillator assembly and pairing vibration damping housing inner chamber, respectively has a silicon rubber to make, vibration damping hemisphere is made up of thin-wall semi and the lip limit that is positioned at the thin-wall semi port; the end face on the lip limit of thin-wall semi sticks on the center of each inside surface of vibration damping housing inner chamber, and the outer circumference surface of thin-wall semi withstands on the center of each outside surface of crystal oscillator assembly.
The utility model has the advantages that: improved effectiveness in vibration suppression greatly, reduced size simultaneously.An embodiment of the present utility model compares with existing vibration-proof structure, and effectiveness in vibration suppression has improved more than 20%, volume-diminished more than 30%.
Description of drawings
Fig. 1 is a structural representation of the present utility model.Do not show the vibration damping hemisphere that is positioned at crystal oscillator assembly front and rear surfaces among the figure.
Fig. 2 is the structural representation of vibration damping hemisphere in the utility model.
Embodiment
Below the utility model is described in further details.Referring to Fig. 1,2, the vibration-proof structure of radar crystal oscillator comprises a vibration damping housing with rectangular hexahedron inner chamber that is connected to form by box body 1 and lid 2, and it is the crystal oscillator assembly 3 of rectangular hexahedron that profile is arranged in the vibration damping housing; It is characterized in that, the profile of crystal oscillator assembly 3 is similar rectangular hexahedron to the geometric configuration of vibration damping housing inner chamber, the thin-walled vibration damping hemisphere 4 that between each inside surface of each outside surface of crystal oscillator assembly 3 and pairing vibration damping housing inner chamber, respectively has a silicon rubber to make, vibration damping hemisphere 4 is made up of thin-wall semi 4a and the lip limit 4b that is positioned at the thin-wall semi port; the end face of the lip limit 4b of thin-wall semi 4 sticks on the center of each inside surface of vibration damping housing inner chamber, and the outer circumference surface of thin-wall semi 4a withstands on the center of each outside surface of crystal oscillator assembly 3.
Diameter D=12～16mm of said thin-wall semi 4a, wall thickness t=0.8～1.2mm of thin-wall semi 4a, width w=3～6mm of lip limit 4b.
Principle of work of the present utility model is: adopt semicircular rubber shock absorber, with the mode of six supports the crystal oscillator parts are carried out the flexible suspension vibration damping.Under the condition of broad-band random vibration, change the ratio of damping of vibration damper by the size that changes vibration damper, the influence that the phase noise of crystal oscillator is vibrated significantly reduces, and can satisfy the racon requirement.
Following table provides the major parameter of 3 embodiment of the present utility model.
| G (gram) | D | t | w | |
| Example 1 | 50 | 12 | 0.8 | 3 |
| Example 2 | 55 | 14 | 1 | 4 |
| Example 3 | 60 | 16 | 1.2 | 5 |
Claims (2)
1, the vibration-proof structure of radar crystal oscillator comprises a vibration damping housing with rectangular hexahedron inner chamber that is connected to form by box body [1] and lid [2], and it is the crystal oscillator assembly [3] of rectangular hexahedron that profile is arranged in the vibration damping housing; It is characterized in that, the profile of crystal oscillator assembly [3] is similar rectangular hexahedron to the geometric configuration of vibration damping housing inner chamber, the thin-walled vibration damping hemisphere [4] that between each inside surface of each outside surface of crystal oscillator assembly [3] and pairing vibration damping housing inner chamber, respectively has a silicon rubber to make, vibration damping hemisphere [4] is made up of thin-wall semi [4a] and the lip limit [4b] that is positioned at the thin-wall semi port; the end face on the lip limit [4b] of thin-wall semi [4] sticks on the center of each inside surface of vibration damping housing inner chamber, and the outer circumference surface of thin-wall semi [4a] withstands on the center of each outside surface of crystal oscillator assembly [3].
2, vibration-proof structure according to claim 1 is characterized in that, the diameter D=12～16mm of said thin-wall semi [4a], the wall thickness t=0.8～1.2mm of thin-wall semi [4a], the width w=3～6mm of lip limit [4b].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201456162U CN201402323Y (en) | 2009-03-19 | 2009-03-19 | Vibration-absorptive structure of radar crystal oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201456162U CN201402323Y (en) | 2009-03-19 | 2009-03-19 | Vibration-absorptive structure of radar crystal oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201402323Y true CN201402323Y (en) | 2010-02-10 |
Family
ID=41662121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201456162U Expired - Fee Related CN201402323Y (en) | 2009-03-19 | 2009-03-19 | Vibration-absorptive structure of radar crystal oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201402323Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919197A (en) * | 2018-07-23 | 2018-11-30 | 北京无线电测量研究所 | A kind of vibration absorber and airborne radar |
-
2009
- 2009-03-19 CN CN2009201456162U patent/CN201402323Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919197A (en) * | 2018-07-23 | 2018-11-30 | 北京无线电测量研究所 | A kind of vibration absorber and airborne radar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20160319 |