CN204361231U - A kind of cavity body filter - Google Patents
A kind of cavity body filter Download PDFInfo
- Publication number
- CN204361231U CN204361231U CN201520016256.1U CN201520016256U CN204361231U CN 204361231 U CN204361231 U CN 204361231U CN 201520016256 U CN201520016256 U CN 201520016256U CN 204361231 U CN204361231 U CN 204361231U
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- China
- Prior art keywords
- resonant rod
- cavity
- round platform
- trip bolt
- diameter
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of cavity body filter, it comprises cavity round platform, resonant rod and trip bolt, the positioning cylinder that described trip bolt comprises round end and is fixedly connected with round end, the diameter of described cavity round platform is less than the diameter of resonant rod, described trip bolt enters in cavity round platform through resonant rod, described resonant rod bottom surface and cavity round platform upper surface close contact, described resonant rod wall thickness is no more than 0.6mm.Resonant rod of the present utility model can realize closely cooperating of resonant rod and cavity round platform by trip bolt, not yielding, and can ensure the reliability of long-term complex condition, thus at utmost lowly on the basis ensureing properties of product reduces product cost.
Description
Technical field
The utility model belongs to filter field, particularly relates to a kind of cavity body filter.
Background technology
In filter field, usual cavity body filter resonant rod is installed on above the round platform of bottom surface, cavity resonant chamber, makes its resonance frequency reach the frequency of specifying.Figure of description 1 is now conventional cavity body filter resonant column mounting means, the diameter a of its resonant rod 102 is less than the diameter b of cavity round platform 101, and owing to adopting the form of bending punching press bottom it, there is certain elasticity, therefore can cannot compress resonant rod when the Tightening moment of screw is too small, when moment is excessive can by it bottom compressive strain cause loose contact.Even if when moment is suitable, the risk factor that resonant rod loosens under vibration, high/low-temperature impact condition still can be higher.When reality uses, easily there is trip bolt 103 by compressive strain bottom resonant rod 102, cause the loose contact with cavity round platform bottom resonant rod, and then make the performance of filter product bad.
Summary of the invention
For the deficiencies in the prior art, it is more stable that the purpose of this utility model is to provide a kind of performance, the cavity body filter that cost is lower.
For achieving the above object, the utility model have employed following technical scheme:
A kind of cavity body filter, it comprises cavity round platform, resonant rod and trip bolt, the positioning cylinder that described trip bolt comprises round end and is fixedly connected with round end, the diameter of described cavity round platform is less than the diameter of resonant rod, described trip bolt enters in cavity round platform through resonant rod, described resonant rod bottom surface and cavity round platform upper surface close contact, described resonant rod wall thickness is no more than 0.6mm.
As the further optimization of such scheme, described cavity round platform upper surface is anchor ring, still can keep the good contact with resonant rod after cavity die sinking.
As the further optimization of such scheme, described resonant rod bottom surface is complete circular flat, and edge has chamfering, and complete circular flat ensures the contact-making surface uniform force of resonant rod and cavity round platform, not yielding.
As the further optimization of such scheme, the diameter 1mm more than larger than cavity round platform diameter of described resonant rod, contributes to trip bolt and effectively compresses resonant rod.
As the further optimization of such scheme, described resonant rod wall thickness is 0.4mm, significantly reduces the material cost needed for resonant rod.
Compared with prior art, the beneficial effects of the utility model main manifestations is:
Resonant rod of the present utility model can realize closely cooperating of resonant rod and cavity round platform by trip bolt, not yielding, and can ensure the reliability of long-term complex condition, thus at utmost lowly on the basis ensureing properties of product reduces product cost.In addition, because the wall thickness of resonant rod is thinner, the diameter of cavity round platform is less, thus can reduce the weight of product, also can reduce costs.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described.
Fig. 1 is cavity body filter structural representation of the prior art.
Fig. 2 is the cavity body filter structural representation in the utility model one embodiment.
Fig. 3 is the structural representation of the vitals in the utility model one embodiment.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is more specifically described.
As shown in Figures 2 and 3, a kind of cavity body filter, comprise cavity round platform 201, resonant rod 202 and trip bolt, the positioning cylinder 205 that described trip bolt 203 comprises round end 206 and is fixedly connected with round end 206, described cavity round platform 201 upper surface is provided with contact annulus 204, the bottom surface of described resonant rod 202 is contact plane 207, and bottom surface is provided with via hole 208.Described resonant rod 202 wall thickness c is 0.4mm.
The One-sided Widths of the contact annulus 204 of described cavity round platform 201 upper surface is 0.5 ~ 1.5mm, the diameter b 1mm more than larger than the external diameter f of contact annulus 204 of described resonant rod 202, the round end 206 diameter g 1mm more than larger than the internal diameter e of contact annulus 204 of described trip bolt 203.The positioning cylinder 205 diameter 0.03 ~ 0.1mm less of resonant rod 202 bottom via 208 diameter of described trip bolt 203.The chamfering of described resonant rod 202 bottom margin should be little as far as possible.Diameter 0.03 ~ the 0.1mm less of the diameter of resonant rod 202 bottom via 208 of described positioning cylinder 205, guarantees that resonant rod 202 meets instructions for use with the build-up tolerance of cavity round platform 201.
Described trip bolt 203, through the via hole 208 bottom resonant rod 202, makes the positioning cylinder 205 of trip bolt 203 coordinate 208 with the via hole bottom resonant rod 202, realizes the accurate location of resonant rod 202.By the round end 206 of described trip bolt 203, resonant rod 202 is closely crimped with cavity round platform 201.
Above filter resonance bar 202 mounting means that the present embodiment provides is described in detail, the present embodiment provides custom-designed trip bolt 203 to be directly pressed on the contact annulus 204 of cavity round platform 201 by resonant rod 202, achieves the accurate location of resonant rod 202 and better compresses effect.Meanwhile, because resonant rod 202 adopts special stamping procedure, its wall thickness can be reduced to 0.4mm from existing about 1mm, the method can reduce weight and the product weight of resonant rod 202, therefore can reduce the production cost of resonant rod 202 to a great extent.
Obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection range of the present utility model.
Claims (5)
1. a cavity body filter, it is characterized in that, it comprises cavity round platform, resonant rod and trip bolt, the positioning cylinder that described trip bolt comprises round end and is fixedly connected with round end, the diameter of described cavity round platform is less than the diameter of resonant rod, described trip bolt enters in cavity round platform through resonant rod, and described resonant rod bottom surface and cavity round platform upper surface close contact, described resonant rod wall thickness is no more than 0.6mm.
2. cavity body filter according to claim 1, is characterized in that, described cavity round platform upper surface is anchor ring.
3. cavity body filter according to claim 1, is characterized in that, described resonant rod bottom surface is complete circular flat, and edge has chamfering.
4. cavity body filter according to claim 1, is characterized in that, the diameter 1mm more than larger than cavity round platform diameter of described resonant rod.
5. cavity body filter according to claim 1, is characterized in that, described resonant rod wall thickness is 0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016256.1U CN204361231U (en) | 2015-01-12 | 2015-01-12 | A kind of cavity body filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016256.1U CN204361231U (en) | 2015-01-12 | 2015-01-12 | A kind of cavity body filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204361231U true CN204361231U (en) | 2015-05-27 |
Family
ID=53262683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520016256.1U Expired - Fee Related CN204361231U (en) | 2015-01-12 | 2015-01-12 | A kind of cavity body filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204361231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110770970A (en) * | 2018-03-23 | 2020-02-07 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
-
2015
- 2015-01-12 CN CN201520016256.1U patent/CN204361231U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110770970A (en) * | 2018-03-23 | 2020-02-07 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
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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 |
Granted publication date: 20150527 Termination date: 20220112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |