CN213877834U - Subminiature cylindrical filter for microwave - Google Patents
Subminiature cylindrical filter for microwave Download PDFInfo
- Publication number
- CN213877834U CN213877834U CN202022866418.4U CN202022866418U CN213877834U CN 213877834 U CN213877834 U CN 213877834U CN 202022866418 U CN202022866418 U CN 202022866418U CN 213877834 U CN213877834 U CN 213877834U
- Authority
- CN
- China
- Prior art keywords
- shell
- capacitor
- condenser
- lead wire
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a subminiature column filter for microwave, including shell, condenser, soldering tin material and the embedment material of taking the lead wire, the embedment material sets up between the clearance of shell one end and lead wire, the embedment material adopts the glass powder, the condenser is disk electric capacity, is provided with the resin coating between condenser and the embedment material, and the condenser both sides are through soldering tin and shell and lead wire welded fastening, and fill resin between condenser surface, shell inner chamber and the lead wire. The utility model has reasonable structural design and simple manufacture, and adopts the resin coating to bond the inside of the shell and the capacitor in 360 degrees, thereby prolonging the service life of the filter; the capacitor is welded and fixed by adopting soldering tin, the fixing effect is good, and the mechanical resistance is strong; and finally, resin is adopted for filling, so that the filter has a good effect and is not easy to generate short circuit.
Description
Technical Field
The utility model relates to a wave filter, in particular to subminiature column wave filter for microwave.
Background
The columnar radio frequency interference filter mainly comprises a metal shell with a lead wire, a multilayer ceramic capacitor, a soldering tin material and a potting material, is a welded filter of a semi-sealed structure packaged by glass and resin, is widely applied to occasions with signal line input and output such as aviation, aerospace and electronic systems, solves the problem of electromagnetic interference of equipment or systems, has small volume and light weight, and can provide good filtering effect in the frequency range of 1MHz-18 GHz. With the change of 4G, 5G and 7G information times, the microminiature columnar filter is widely applied in the field of radio frequency microwaves at present, and more than a hundred and ten thousand of filters are required in the year. The cylindrical end of the shell of the conventional cylindrical filter is usually phi 3 mm-phi 5mm, but the design structure is very tense along with the application of an electronic circuit, and the cylindrical end of the shell of the subminiature cylindrical filter is required to have small volume and light weight under the condition of unchanging electrical parameters, and has small outer diameter and short length, so the structural design and the process control are very difficult. The traditional columnar radio frequency interference filter is characterized in that a through capacitor is placed in a metal shell with a lead, then solder paste is applied between an outer electrode of the capacitor and an inner cavity of the shell and between an inner electrode of the capacitor and the lead in a fan-shaped spot-coating mode through a mutually buckled needle cylinder for welding and cleaning, and then resin is poured among the surface of the capacitor, the inner cavity of the shell and the lead to form the columnar through capacitor. The traditional columnar radio frequency interference filter is complex to manufacture, short in service life, low in filter effect, weak in mechanical resistance and prone to short circuit.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a structural design is reasonable, simple manufacture, the subminiature column filter for microwave that the filter effect is good.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model discloses a subminiature column filter for microwave, including shell, condenser, soldering tin material and the embedment material of taking the lead wire, the embedment material sets up between the clearance of shell one end and lead wire, the embedment material adopts the glass powder, the condenser is disk electric capacity, is provided with the resin coating between condenser and the embedment material, and the condenser both sides are through soldering tin and shell and lead wire welded fastening, and fill resin between condenser surface, shell inner chamber and the lead wire.
Preferably, the outer diameter of the shell is phi 1.5 mm-phi 2.3mm, the length is 1.3mm-5mm, the diameter of the lead is phi 0.3 mm-phi 1mm, and the length is 3mm-50 mm.
Preferably, the resin coating is made of one of epoxy resin, phenolic resin, silicone grease and red adhesive for mounting.
Compared with the prior art, the utility model has the advantages of: the utility model has the advantages of reasonable structural design, simple manufacture, and adopts resin coating 360 degrees to bond the inside of the shell and the capacitor, so that the flux residue between the outer electrode of the capacitor and the shell is like a wall and is not connected with the residue of the lead wire and the inner electrode of the capacitor, thus the insulation resistance can not be reduced or short circuit can not be caused even if the inside has the uncleaned flux residue, and the service life of the filter is prolonged; the capacitor is welded and fixed by adopting soldering tin, the fixing effect is good, and the mechanical resistance is strong; and finally, resin is adopted for filling, so that the filter has a good effect and is not easy to generate short circuit.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a left side view of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 and 2, the utility model discloses a subminiature column filter for microwave, including shell 1, condenser 2, soldering material and the embedment material 3 of taking the lead wire, embedment material 3 sets up between the clearance of shell 1 one end and lead wire, embedment material 3 adopts the glass powder, condenser 2 is disk electric capacity, is provided with resin coating 5 between condenser 2 and the embedment material 3, and soldering tin 6 and shell 1 and lead wire welded fastening are passed through to condenser 2 both sides, and fill resin 4 between condenser 2 surface, shell 1 inner chamber and the lead wire.
The outer diameter phi of the shell 1 is 1.5 mm-phi 2.3mm, the length is 1.3mm-5mm, the diameter of a lead is phi 0.3 mm-phi 1mm, the length is 3mm-50mm, and the resin coating 5 is made of one of epoxy resin, phenolic resin, silicone grease and patch red glue.
When the capacitor is manufactured, a thin resin coating 5 is printed by a printing screen, a wafer capacitor is placed on the resin coating 5, a thin resin layer covers a disc surface at one end of a capacitor 2, the disc capacitor resin surface penetrates through a metal shell 1 with a lead up and down, and the capacitor is lightly pressed by a polytetrafluoroethylene guide pipe to enable glue to bond the capacitor and the metal shell at 1360 degrees; and then injecting the solder paste in the 'buckled' type needle cylinder into the 'thread screwing-in' type needle cylinder, adopting a semi-automatic glue dispenser, setting one of timing 5s-100s, fixing a needle head, wherein the angle of the needle cylinder is 0-90 degrees, symmetrically point-coating two ends of the needle head to enable the solder paste to be in an 'hourglass' shape, entering equipment for welding after the point-coating and gluing of the solder paste are finished, cleaning after welding, and then pouring resin 4 among the surface of the capacitor 2, the inner cavity of the shell 1 and the lead wire to form the columnar through-core type filter. The utility model discloses increase resin coating 5 between 1 glass potting material 3 of shell and condenser 2, optimized the even effective control of point coating glueing mode and point coating volume of solder.
The resin coating 5 is coated in a manner of adopting a blade coating method, so that the capacitor 2 is firmly bonded with the shell 1360 degrees, the technology is not limited to a stainless steel mesh brush diagram, and the bonding range is one of 270 degrees to 360 degrees; the glue applying mode of the soldering paste is hourglass point coating, namely symmetrical point coating, so that the two ends of the capacitor 2 uniformly exhaust and the capacitor 2 is uniformly stressed in the reflow and cooling processes of the soldering tin 6; the glue applying needle cylinder tool is fastened in a threaded precession mode, and the improved tool is fastened in a threaded precession mode to avoid air leakage. The dispensing machine is provided with timing coating, and the amount of the solder paste dispensed by the dispensing machine is basically consistent by adopting the needles with the same type, so that the problem of inconsistent amount of the solder paste is effectively controlled; the printing screen is made of one of stainless steel, aluminum material, plastic film and the like.
Claims (3)
1. The utility model provides a microwave is with subminiature column filter, includes shell, condenser, soldering material and the embedment material of taking the lead wire, and the embedment material sets up between the clearance of shell one end and lead wire, its characterized in that: the capacitor is a wafer capacitor, a resin coating is arranged between the capacitor and the encapsulating material, two sides of the capacitor are welded and fixed with the shell and the lead through soldering tin, and resin is filled among the surface of the capacitor, the inner cavity of the shell and the lead.
2. A subminiature cylindrical filter for microwave according to claim 1, characterized in that: the outer diameter phi of the shell is 1.5 mm-2.3 mm, the length is 1.3mm-5mm, the diameter of the lead is 0.3 mm-1 mm, and the length is 3mm-50 mm.
3. A subminiature cylindrical filter for microwave according to claim 1, characterized in that: the resin coating adopts one of epoxy resin, phenolic resin, silicone grease and patch red glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022866418.4U CN213877834U (en) | 2020-12-03 | 2020-12-03 | Subminiature cylindrical filter for microwave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022866418.4U CN213877834U (en) | 2020-12-03 | 2020-12-03 | Subminiature cylindrical filter for microwave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213877834U true CN213877834U (en) | 2021-08-03 |
Family
ID=77041154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022866418.4U Active CN213877834U (en) | 2020-12-03 | 2020-12-03 | Subminiature cylindrical filter for microwave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213877834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784479A (en) * | 2022-04-11 | 2022-07-22 | 成都宏明电子股份有限公司 | Manufacturing method of subminiature welding type filter |
-
2020
- 2020-12-03 CN CN202022866418.4U patent/CN213877834U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784479A (en) * | 2022-04-11 | 2022-07-22 | 成都宏明电子股份有限公司 | Manufacturing method of subminiature welding type filter |
| CN114784479B (en) * | 2022-04-11 | 2023-07-14 | 成都宏明电子股份有限公司 | Manufacturing method of microminiature welding type filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213877834U (en) | Subminiature cylindrical filter for microwave | |
| US4093972A (en) | Anode termination means for an electrical device component | |
| CN104701009A (en) | Small-sized chip type surface mounting (SMD) high-voltage and safety standard recognized ceramic capacitor | |
| WO2021077937A1 (en) | Emi shielding material, emi shielding process, and communication module product | |
| JP2022074828A (en) | Coil component | |
| JP2003272927A (en) | Chip inductor and its manufacturing method | |
| CN103489655B (en) | A kind of Novel planar array multi-core series-parallel solid tantalum capacitor and manufacture method thereof | |
| JPH04164310A (en) | Manufacture of chip type solid electrolytic capacitor | |
| CN204991479U (en) | Coiling formula SMD metallization polyester film condenser | |
| CN203690029U (en) | Mounting type planar thick-film high-power resistor | |
| CN110492731A (en) | A kind of ceramics water type power adapter and manufacturing method | |
| CN206524233U (en) | A kind of inductor | |
| JP2008092147A (en) | Nonreciprocal circuit element, its manufacturing method, and communication device | |
| CN218525456U (en) | Capacitor core electrode leading-out structure | |
| CN117241494A (en) | High-reliability radio frequency LC filter assembly method | |
| CN203690278U (en) | Leadless ball foot surface-mounted type thick film hybrid integrated circuit | |
| CN219018781U (en) | Filter | |
| CN111540984B (en) | Ferromagnetic powder low-pass filter and packaging method | |
| US3273034A (en) | Extended foil capacitor with disc-like terminals centrally anchored thereto and a method of making the same | |
| CN108183030A (en) | A kind of high-precision capacitor structure and its manufacturing method | |
| JP2000049019A (en) | Coil device | |
| CN114784479B (en) | Manufacturing method of microminiature welding type filter | |
| CN203521173U (en) | Microminiature feed-through capacitor | |
| CN216698049U (en) | Combined inductance element | |
| CN219939732U (en) | Atomizing core and electronic atomizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |