CN103606723A - Duplex filter structure - Google Patents
Duplex filter structure Download PDFInfo
- Publication number
- CN103606723A CN103606723A CN201310606176.7A CN201310606176A CN103606723A CN 103606723 A CN103606723 A CN 103606723A CN 201310606176 A CN201310606176 A CN 201310606176A CN 103606723 A CN103606723 A CN 103606723A
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- duplexer filter
- card base
- wiring board
- filter body
- barricade
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Abstract
The invention provides a duplex filter structure and belongs to the technical field of filters. The duplex filter structure comprises a shell and a duplex filter body. One end of the shell is provided with a first mounting connection base in an extending mode. The other end of the shell is provided with a second mounting connection base in an extending mode. The duplex filter body is fixed in a shell cavity. The duplex filter structure is characterized by further comprising a shell cover. The upper portion and the lower portion of the shell cavity are both provided with unclosed openings. The upper portion, corresponding to the shell cavity, of the shell cover is matched with the shell. A shield plate is arranged in the shell cavity and can enhance shielding effects so as to enable the signal anti-interference capacity and the anti-radiation capacity of the duplex filter body to be improved. Due to the fact that the upper portion and the lower portion of the shell cavity are both provided with the unclosed openings, when secondary regulation needs to be carried out on parameter indexes of the duplex filter body installed on a circuit board, only the shell cover needs to be removed. Consequently, the debugging and mounting efficiency is improved, the intensity of installation operations of workers is relieved, secondary welding is not needed, and welding materials are saved.
Description
Technical field
The invention belongs to wave filter technology field, be specifically related to a kind of duplexer filter structure, be applicable on the EoC board of Set Top Box inside of family expenses rating equipment.
Background technology
Duplexer filter is called " duplexer " conventionally for short, it is the vitals in communication system, be a kind of device that the power output of picture transmitter and sound transmitter is mixed and don't mutually crosstalked, its objective is in order to make two transmitters share same television transmitting antenna.
As is known in the industry, telecommunications network, broadcasting and television network and the Internet are conventionally referred to as three nets, wherein, the Internet is to broadband communication network, digital tv network and the Internet speech development, due to " integration of three networks " " unification of three nets " can greatly alleviate infrastructure input cost, the maintenance cost of simplified network management and significantly reduction customer using cost and operator, thereby will enlarge markedly the demand of duplexer filter, but the shielding properties of duplexer filter has been proposed to more harsh requirement simultaneously, because the excellence that shielding properties whether good is directly connected to the anti-interference and radioresistance effect between signal whether.
Figure 2 shows that the schematic diagram of the duplexer filter structure in prior art, comprise and form a housing 1 and a duplexer filter body 2 that has shell chamber 11, in one end of housing 1, be extended with one first Connection Block 12 is installed, and be extended with one second installation Connection Block 13 at the other end of housing 1, duplexer filter body 2 is fixed in described shell chamber 11, and a pair of leading-out terminal 21 of this duplexer filter body 2 is connected with external circuit by first, second described installation Connection Block 13.Before being installed on circuit board 3 by housing 1 together with duplexer filter body 2, first the electric parameter index of duplexer filter body 2 is tested and adjusted, then housing 1 is welded on circuit board 3, after installing on circuit board 3, conventionally need to again detect, if there is deviation in a certain parameter index, the welding with circuit board 3 together with 2 releasings of duplexer filter body by housing 1 so, adjusts again to parameter index, after again adjusting, returns in circuit board 3.
There is following shortcoming in above-mentioned duplexer filter structure as shown in Figure 2: one, because housing 1 only has an opening, by this opening face circuit board 3 and with circuit board 3 solid weldings, thereby when will be that secondary is when regulate to being positioned at that the parameter index of the duplexer filter body 2 in shell chamber 11 regulates again, must be by housing 1 removal from circuit board 3, so not only troublesome poeration and the installation exercise intensity that increases operator, and affect Installation and Debugging efficiency; Its two, owing to needing again and circuit board 3 solid weldings, thereby cause the waste of welding material after secondary regulates; Its three, because shield effectiveness is short of relatively, thereby affect antijamming capability and the capability of resistance to radiation between signal.
In disclosed Chinese patent literature, can be seen in the technical information about duplexer filter structure, as application for a patent for invention publication No. CN101958443A recommends to have " duplexer filter ", CN102571017A to provide " two filterplexer " and invention patent mandate notification number CN101018070B introduction has " duplexer ", etc.But all do not provide the enlightenment being solved the problems of the technologies described above in these patent documentations that are not limited to exemplify.
For above-mentioned prior art, the applicant has done positive and useful exploration and design, finally formed technical scheme described below, and taked the laboratory the applicant under secrecy provision to make analogue test, it is practicable that result proves.
Summary of the invention
Task of the present invention is to provide a kind of and contributes to significantly to improve shield effectiveness and use and improve duplexer filter body to the anti-interference and capability of resistance to radiation between signal and be conducive to significantly promote the reasonability of housing self structure and use and be embodied in when duplexer filter body is implemented secondary and regulated without housing is unloaded divided by improving Installation and Debugging efficiency and alleviating manipulation strength and reduce the duplexer filter structure to the consumption of welding material from circuit board.
Task of the present invention completes like this, a kind of duplexer filter structure, comprise a housing and a duplexer filter body, in one end of housing, be extended with one first Connection Block is installed, and be extended with one second installation Connection Block at the other end of housing, duplexer filter body is fixed in described shell chamber, and a pair of leading foot of this duplexer filter body, by described first, Connection Block is installed and the second installation Connection Block is connected with external circuit, be characterised in that: also include a cap, the upper and lower in described shell chamber is all configured to the opening shape not sealing, described cap matches with described housing on the top corresponding to shell chamber, and form and have a barricade in shell chamber.
In a specific embodiment of the present invention, on the side of length direction of described housing and the outer wall of opposite side and at Ge Yi interval, position to correspond to each other state, form and have the card base of the outer wall surface that is raised in housing to coordinate boss, and at a side of the length direction of described cap and opposite side, each forms with interval state and has card base, the position of card base and card base coordinate boss corresponding, by card base is placed in that card base coordinates boss by described cap the closed upper part to described shell chamber.
In another specific embodiment of the present invention, described card base coordinates the position of boss on the outer wall of described housing corresponding to the accent position on the top in described shell chamber, and the bottom that coordinates the length direction of boss at card base forms a card base oblique surface, the bottom of the length direction of described card base forms has card base oblique surface to coordinate pawl, and card base oblique surface coordinates pawl to match with card base oblique surface.
In another specific embodiment of the present invention, on the side of length direction of described housing and the wall body of opposite side and be positioned at wall body bottom each with interval state, form and have welding circuit board fixing feet.
In another specific embodiment of the present invention, described barricade is positioned at the middle part in described shell chamber, and one end of this barricade and the other end are respectively extended with a barricade intercell connector, barricade intercell connector is connected with the chamber wall in shell chamber, and described duplexer filter body is corresponding to the top of barricade and match with barricade.
Of the present invention, also have in a specific embodiment, on the top of described barricade, form and have one or above duplexer filter body mating flanges, described duplexer filter body matches with this duplexer filter body mating flanges.
More of the present invention and in a specific embodiment, in the bottom of described barricade, form and have one or above barricade to be welded and fixed pin.
In of the present invention and then a specific embodiment, described duplexer filter body includes a wiring board, on this wiring board and offering mating flanges hole corresponding to the position of described duplexer filter body mating flanges, match with duplexer filter body mating flanges in this mating flanges hole, on the chamber wall in described shell chamber and be positioned at chamber wall surrounding each form and to have a wiring board fixing feet, and on described wiring board and in the position corresponding to wiring board fixing feet, offering wiring board fixing hole, wiring board fixing hole and wiring board fixing feet are fixed.
Of the present invention, more, in a specific embodiment, on described wiring board, be installed with a wiring board shielding sheet again, and the chamber wall in this wiring board shielding one end of sheet and the end of the other end and described shell chamber is fixed.
In again of the present invention and then a specific embodiment, the shape of described wiring board shielding sheet is zigzag.
Technical scheme provided by the invention is owing to being provided with barricade in the shell chamber at housing, thereby can promote shield effectiveness, makes duplexer filter body be able to remarkable improvement to the anti-interference and capability of resistance to radiation between signal; Owing to shell chamber being designed to the opening shape that top and bottom are not all sealed, thereby when will be when being installed on the parameter index of the duplexer filter body on circuit board and making secondary and regulate, as long as removing cap can regulate, without resembling prior art, housing is unloaded from circuit board together with duplexer filter body, not only can improve adjustment and installation efficiency and alleviate workman's installation exercise intensity, and owing to can saving welding material without secondary welding.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention structure chart.
Fig. 2 is the schematic diagram of the duplexer filter structure in prior art.
Embodiment
For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more, applicant elaborates the mode with embodiment below, but to the description of embodiment, be not all the restriction to the present invention program, any according to the present invention design, done only for pro forma but not substantial equivalent transformation all should be considered as technical scheme category of the present invention.
Every directivity concept that relates to up, down, left, right, before and after and so on, all for the current residing location status of Fig. 1, therefore can not be understood as the specific limited to the present invention program in the following description.
Refer to Fig. 1, a housing 1 and a duplexer filter body 2 have been provided, on the outer wall of one end of housing 1, be on the outer wall of left end of location status shown in Fig. 1, with level, to be extended with one first Connection Block 12 is installed, and on the outer wall of the other end of housing 1, be on the outer wall of right-hand member of location status shown in Fig. 1, with level, to be extended with one second equally Connection Block 13 is installed, first, second installs Connection Block 12, 13 are located along the same line, duplexer filter body 2 is fixed in the shell chamber 11 of housing 1, and a pair of leading foot 21 of this duplexer filter body 2 is installed Connection Block 13 by the first installation Connection Block 12 and second respectively and is connected with external circuit.
Technical essential as technical scheme provided by the invention: aforesaid duplexer filter structure also includes a cap 4, and the upper and lower in aforesaid shell chamber is all designed to the opening shape not sealing, the upper and lower part that is to say shell chamber 11 is penetrating, and cap 4 matches and has a barricade 111 in the interior formation in shell chamber 11 with the mode that housing 1 coordinates with holding on the top corresponding to shell chamber 11.
As shown in Figure 1, on the side of length direction (also can claim long side direction) of aforementioned housing 1 and the outer wall of opposite side and at the card base that Ge Yi interval, position to correspond to each other state forms the outer wall surface that is raised in housing 1, coordinate boss 14, and at a side of the length direction of aforementioned cap 4 and opposite side, each forms with interval state and has card base 41, card base 41 coordinates boss 14 corresponding with card base, when cap 4 lids are placed on housing 1, card base 41 coordinates boss 14 card to join with card base, thereby by the closure of openings on the top in 4 pairs of aforementioned shell chambeies 11 of cap.
As preferred scheme, can be also that the left end of shown position state and right-hand member that the other end is shown position state respectively form the cap end card base 42 that a pair of structure is identical with card base 41 in one end of aforementioned cap 4, one end of cap end card base 42 and housing 1 be that the wall body of left end and wall body that the other end is right-hand member paste and touch.
In the present embodiment, although illustrated the side of length direction and the card base on the outer wall of opposite side that are positioned at housing 1 to coordinate the quantity of boss 14 to be respectively three in Fig. 1, and the quantity that has provided a side of the length direction that is positioned at cap 42 and the card base 41 of opposite side is similarly three, but be not subject to this and count quantitative limitation, that is to say that card base coordinates the quantity of boss 14 to comply with and needs increase and decrease, but the quantity of card base 4 should coordinate with card base the quantity of boss 14 to keep the relation of following in sb's footsteps.
Aforesaid card base coordinates the position of boss 14 on the outer wall of housing corresponding to the accent position on the top in shell chamber 11, and the bottom that coordinates the length direction of boss 14 at card base forms a card base oblique surface 141, in return, in the bottom of the length direction of card base 41, form and have card base oblique surface to coordinate pawl 411, card base oblique surface coordinates pawl 411 to match with card base oblique surface 141.
Please continue to refer to Fig. 1, on the side of length direction of aforementioned housing 1 and the wall body of opposite side and be positioned at wall body bottom each with interval state, form and have welding circuit board fixing feet 15, when use is of the present invention, by welding circuit board fixing feet 15, be that welding circuit board is fixed with the EoC plate of the Set Top Box inside of rating equipment.
Above mentioned barricade 111 is positioned at the middle part in shell chamber 11, and one end of this barricade 111 (left end of state shown in Fig. 1) and the other end (right-hand member of state shown in Fig. 1) are respectively extended with a barricade intercell connector 1111, and barricade intercell connector 1111 is connected with the left right chamber wall in shell chamber 11.Specifically, the barricade intercell connector 1111 that is positioned at barricade 111 left ends is connected with the left chamber wall in shell chamber 11, and the barricade intercell connector 1111 that is positioned at barricade 111 right-hand members is connected with the right chamber wall in shell chamber 11, aforesaid duplexer filter body 2 is corresponding to the top of barricade 111 and match with barricade 111.
In the present embodiment, the top of barricade 111 towards on surface form and have a pair of duplexer filter body mating flanges 1112, duplexer filter body 2 matches with this pair of duplexer filter body mating flanges 1112.Certainly, the quantity of duplexer filter body mating flanges 1112 is not subject to illustrated a pair of restriction, may be as few as one, also can three of as many as or more than.
As shown in Figure 1, in the bottom of aforesaid barricade 111, form and have a pair of (not definitely being limited to a pair of) barricade to be welded and fixed pin 1113, it is that circuit board is connected and fixed for the EoC board of the Set Top Box inside with aforesaid rating equipment equally that this pair of barricade is welded and fixed pin 1113.
Aforesaid duplexer filter body 2 includes a wiring board 22, on this wiring board 22 and in the position corresponding to aforementioned duplexer filter body mating flanges 1112, offer mating flanges hole 221, match with duplexer filter body mating flanges 1112 in mating flanges hole 221, that is to say, duplexer filter body mating flanges 1112 probes in mating flanges hole 221.In addition, on the chamber wall in the shell chamber 11 of aforementioned housing 1 and be positioned at chamber wall surrounding each form and have wiring board fixing feet 112, and on aforesaid wiring board 22 and in the position corresponding to wiring board fixing feet 112, offering wiring board fixing hole 222, wiring board fixing hole 222 is fixing with wiring board fixing feet 112.
And then, on aforesaid wiring board 22, be fixed with a wiring board shielding sheet 223, and this wiring board shields one end (left end) of sheet 223 and the chamber wall in the Yu Ke chamber, edge 11 that the other end (right-hand member) leans out wiring board 22 is welded and fixed.Preferably, the shape of wiring board shielding sheet 223 is the zigzag structure of English alphabet.
In use, by housing 1, together with the duplexer filter body 2 through to after parameter index adjustment, be fixed on circuit board, specifically aforesaid welding circuit board fixing feet 15 and barricade be welded and fixed to pin 1113 and fix with welding circuit board.When will be when being welded in the parameter index of duplexer filter body 2 on circuit board and that be positioned at shell chamber 11 and again regulating, while carrying out secondary adjusting, so as long as cap 4 is withdrawn in housing 1, again cap 4 is returned on housing 1 after to be regulated.Thereby housing 1 is unloaded from circuit board together with duplexer filter body 2 before regulating implementing secondary without resembling prior art, thereby can confirm the technique effect referring in the superincumbent technique effect of applicant hurdle, and owing to being provided with barricade 111 in shell chamber 11, thereby can significantly improve shield effectiveness.
In the above, although applicant the concrete structure of duplexer filter body 2 is not described in detail, because it belongs to known technology, for example can be by the reading of the patent documentation of mentioning in the superincumbent background technology of applicant hurdle be fully understood.
Claims (10)
1. a duplexer filter structure, comprise a housing (1) and a duplexer filter body (2), in one end of housing (1), be extended with one first Connection Block (12) is installed, and be extended with one second installation Connection Block (13) at the other end of housing (1), duplexer filter body (2) is fixed in described shell chamber (11), and a pair of leading foot (21) of this duplexer filter body (2), by described first, Connection Block (12) is installed and the second installation Connection Block (13) is connected with external circuit, it is characterized in that: also include a cap (4), the upper and lower in described shell chamber (11) is all configured to the opening shape not sealing, described cap (4) matches with described housing (1) on the top corresponding to shell chamber (11), and form and have a barricade (111) in shell chamber (11).
2. duplexer filter structure according to claim 1, it is characterized in that forming and having the card base of the outer wall surface that is raised in housing (1) to coordinate boss (14) on the side of length direction of described housing (1) and the outer wall of opposite side and at Ge Yi interval, position to correspond to each other state, and at a side of the length direction of described cap (4) and opposite side, each forms with interval state and has card base (41), the position of card base (41) coordinates boss (14) corresponding with card base, by card base (41) is placed in that card base coordinates boss (14) by described cap (4) closed upper part to described shell chamber (11).
3. duplexer filter structure according to claim 1, it is characterized in that described card base coordinates the position of boss (14) on the outer wall of described housing (1) corresponding to the accent position on the top in described shell chamber (11), and the bottom that coordinates the length direction of boss (14) at card base forms a card base oblique surface (141), the bottom of the length direction of described card base (41) forms has card base oblique surface to coordinate pawl (411), and card base oblique surface coordinates pawl (411) to match with card base oblique surface (141).
4. according to the duplexer filter structure described in claim 1 or 2 or 3, it is characterized in that on the side of length direction of described housing (1) and the wall body of opposite side and be positioned at wall body bottom each with interval state, form and have welding circuit board fixing feet (15).
5. duplexer filter structure according to claim 1, it is characterized in that described barricade (111) is positioned at the middle part in described shell chamber (11), and one end of this barricade (111) and the other end are respectively extended with a barricade intercell connector (1111), barricade intercell connector (1111) is connected with the chamber wall of shell chamber (11), and described duplexer filter body (2) is corresponding to the top of barricade (111) and match with barricade (111).
6. duplexer filter structure according to claim 1 or 5, it is characterized in that forming and having one or above duplexer filter body mating flanges (1112) on the top of described barricade (111), described duplexer filter body (2) matches with this duplexer filter body mating flanges (1112).
7. duplexer filter structure according to claim 1 or 5, is characterized in that forming in the bottom of described barricade (111) and has one or above barricade to be welded and fixed pin (1113).
8. duplexer filter structure according to claim 6, it is characterized in that described duplexer filter body (2) includes a wiring board (22), at this wiring board (22), go up and offering mating flanges hole (221) corresponding to the position of described duplexer filter body mating flanges (1112), match with duplexer filter body mating flanges (1112) in this mating flanges hole (221), on the chamber wall in described shell chamber (11) and be positioned at chamber wall surrounding each form and to have a wiring board fixing feet (112), and go up and offer in the position corresponding to wiring board fixing feet (112) wiring board fixing hole (222) at described wiring board (22), wiring board fixing hole (222) is fixing with wiring board fixing feet (112).
9. duplexer filter structure according to claim 8, it is characterized in that being installed with a wiring board shielding sheet (223) on described wiring board (22), and one end of this wiring board shielding sheet (223) and the end of the other end and the chamber wall in described shell chamber (11) are fixed.
10. duplexer filter structure according to claim 9, is characterized in that the shape of described wiring board shielding sheet (223) is zigzag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310606176.7A CN103606723A (en) | 2013-11-25 | 2013-11-25 | Duplex filter structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310606176.7A CN103606723A (en) | 2013-11-25 | 2013-11-25 | Duplex filter structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103606723A true CN103606723A (en) | 2014-02-26 |
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ID=50124935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310606176.7A Pending CN103606723A (en) | 2013-11-25 | 2013-11-25 | Duplex filter structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103606723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552489A (en) * | 2016-02-17 | 2016-05-04 | 苏州浦石精工科技有限公司 | Filter shell body |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5446729A (en) * | 1993-11-01 | 1995-08-29 | Allen Telecom Group, Inc. | Compact, low-intermodulation multiplexer employing interdigital filters |
| US20050136876A1 (en) * | 2003-12-19 | 2005-06-23 | Alcatel | Tower mounted amplifier filter and manufacturing method thereof |
| CN203589178U (en) * | 2013-11-25 | 2014-05-07 | 江苏亿通高科技股份有限公司 | Duplex filter structure |
-
2013
- 2013-11-25 CN CN201310606176.7A patent/CN103606723A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5446729A (en) * | 1993-11-01 | 1995-08-29 | Allen Telecom Group, Inc. | Compact, low-intermodulation multiplexer employing interdigital filters |
| US20050136876A1 (en) * | 2003-12-19 | 2005-06-23 | Alcatel | Tower mounted amplifier filter and manufacturing method thereof |
| CN203589178U (en) * | 2013-11-25 | 2014-05-07 | 江苏亿通高科技股份有限公司 | Duplex filter structure |
Non-Patent Citations (1)
| Title |
|---|
| 刘勃 等: "一种EOC专用双工滤波器的仿真设计与实现", 《电子科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552489A (en) * | 2016-02-17 | 2016-05-04 | 苏州浦石精工科技有限公司 | Filter shell body |
| CN105552489B (en) * | 2016-02-17 | 2019-01-04 | 苏州浦石精工科技有限公司 | A kind of casing of filter |
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Application publication date: 20140226 |