CN215644931U

CN215644931U - Filter debugging structure

Info

Publication number: CN215644931U
Application number: CN202121820753.9U
Authority: CN
Inventors: 陶海军; 万波; 柯友文; 吴凡
Original assignee: Wuhan Fingu Electronic Technology Co Ltd
Current assignee: Wuhan Fingu Electronic Technology Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-01-25
Anticipated expiration: 2031-08-05

Abstract

The utility model provides a filter debugging structure which comprises a cavity, a cover plate and a plurality of resonant rods, wherein the resonant rods are arranged on a bottom plate in the cavity at intervals, each resonant rod is connected with a tuning plate, tuning holes are formed in the cover plate corresponding to the edges of the tuning plates, coupling adjusting holes are formed in the cover plate and located between adjacent resonant rods, coupling adjusting plates are installed in the coupling adjusting holes, gaps are reserved between the coupling adjusting plates and the inner side walls of the coupling adjusting holes, and the coupling adjusting plates are connected with the inner side walls of the coupling adjusting holes. The utility model discloses an adopt the apron as tuning face, through punching on the apron, utilize the deformation of frock adjustment resonance bar to go up tuning plate to come the tuning frequency, crack through the apron simultaneously and push down the mode that the coupling regulating plate degree of depth adjusted the coupling between the resonance bar to realize the debugging performance index of wave filter, compare in traditional wave filter screw rod regulation structure, saved the screw rod height from whole height, be favorable to the miniaturized design of wave filter product.

Description

Filter debugging structure

Technical Field

The utility model belongs to the technical field of filters, and particularly relates to a filter debugging structure.

Background

Cavity filters are widely used in the field of communications as a frequency selective device. The cavity filter debugging structure in the prior art generally increases the screw rod debugging through lapping on, fixes tuning frequency and coupling through nut locking, and screw rod and nut can occupy the partly of overall height, are unfavorable for reducing the overall height volume of product, are particularly unfavorable for miniaturized design.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the existing cavity filter is complex in structure, and the tuning screw occupies the whole height of the filter and is not beneficial to miniaturization design.

In order to achieve the purpose, the utility model provides a filter debugging structure, which comprises a cavity, a cover plate and a plurality of resonance rods, wherein the cover plate covers the cavity, the resonance rods are arranged on a bottom plate in the cavity at intervals and extend from the bottom plate to the top of the cavity, the end part, close to the cover plate, of each resonance rod is connected with a tuning plate, tuning holes are formed in the cover plate corresponding to the edges of the tuning plates, coupling adjusting holes are formed in the cover plate between adjacent resonance rods, coupling adjusting plates are arranged in the coupling adjusting holes, gaps are reserved between the coupling adjusting plates and the inner side walls of the coupling adjusting holes, and the coupling adjusting plates are partially connected with the inner side walls of the coupling adjusting holes.

Furthermore, each tuning plate corresponds to two tuning holes, and the two tuning holes are symmetrically positioned at two opposite edges of the tuning plate.

Furthermore, a bulge is arranged at the center of the top of the resonance rod, and a mounting hole matched with the bulge is formed in the tuning plate.

Furthermore, one end or two opposite ends of the coupling adjusting plate are connected with the inner side wall of the corresponding side of the coupling adjusting hole, and a gap is reserved between the rest side of the coupling adjusting plate and the corresponding side of the coupling adjusting hole.

Furthermore, a gap is reserved between the edge of the coupling adjusting plate and the inner side wall of the coupling adjusting hole, and the opposite edges of the coupling adjusting plate are symmetrically provided with extending parts fixedly connected with the corresponding sides of the coupling adjusting hole.

Furthermore, the coupling adjusting plate and the cover plate are of an integral structure.

Furthermore, the cavity is internally provided with a partition plate which divides the cavity into an input cavity and an output cavity, the side walls of the cavities corresponding to the two cavities are provided with connecting ports, and the connecting ports are connected with the resonance rods in the corresponding cavities through coupling pieces.

Furthermore, the resonance rod, the coupling connecting rod and the bottom plate of the cavity are of an integrated structure.

Furthermore, the bottom plate and the side wall of the cavity are of an integrated structure.

Compared with the prior art, the utility model has the beneficial effects that:

the filter debugging structure provided by the utility model adopts the cover plate as a tuning surface, the frequency is tuned by punching holes on the cover plate and adjusting the deformation of the tuning plate on the resonance rod by using a tool, and meanwhile, the coupling mode between the resonance rods is adjusted by pressing the depth of the coupling adjusting plate through the slotting of the cover plate, so that the debugging performance index of the filter is realized.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the filter debugging architecture of the present invention;

FIG. 2 is an exploded view of the filter debug architecture of the present invention;

FIG. 3 is a perspective view of the filter tuning structure of the present invention;

FIG. 4 is a schematic view of the coupling adjustment plate connected to an end of the coupling adjustment hole according to an embodiment of the present invention;

FIG. 5 is a schematic view of the coupling adjustment plate being connected to opposite ends of the coupling adjustment hole according to an embodiment of the present invention;

FIG. 6 is a schematic view of the coupling adjustment plate partially connected to the edge of the coupling adjustment hole according to an embodiment of the present invention.

Description of reference numerals: 1. a cavity; 2. a cover plate; 3. a tuning hole; 4. a coupling adjustment aperture; 5. a coupling adjusting plate; 6. a connection port; 7. a coupling member; 8. a resonant rod; 9. a protrusion; 10. a tuning plate; 11. mounting holes; 12. a partition plate; 13. a gap; 14. an extension portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, 2, and 3, this embodiment provides a filter debugging structure, including a cavity 1, a cover plate 2, and a plurality of resonant rods 8, where the cavity 1 includes a bottom plate and a side wall surrounding the bottom plate, the bottom plate and the side wall of the cavity 1 are integrally die-cast, the upper side of the cavity 1 is open, and the cover plate 2 covers the open side of the cavity 1, the cavity 1 in this embodiment is square, and in other embodiments, the cavity 1 may also be circular or in other shapes. The interval of resonance rod 8 arranges on the bottom plate in cavity 1 to extend to the top by cavity 1's bottom plate, resonance rod 8 can be fixed with the equipment after cavity 1's bottom plate integrated into one piece or the shaping of part, and is preferred, and resonance rod 8 is with the integrative die-casting of cavity 1's bottom plate, and convenient processing, with low costs, and simplified the equipment of wave filter. The end part, close to the cover plate 2, of each resonance rod 8 is connected with a tuning plate 10, tuning holes 3 are formed in the cover plate 2 corresponding to the edges of the tuning plates 10, coupling adjusting holes 4 are formed in the cover plate 2, the coupling adjusting holes 4 are correspondingly located in the areas between the adjacent resonance rods 8, coupling adjusting plates 5 are installed in the coupling adjusting holes 4, gaps 13 are reserved between the inner side walls of the coupling adjusting plates 5 and the inner side walls of the coupling adjusting holes 4, and the coupling adjusting plates 5 are partially connected with the inner side walls of the coupling adjusting holes 4.

In the embodiment, as for the coupling mode among the resonant rods 8, the slotting and pressing mode of the cover plate 2 is adopted, the coupling among the resonant rods 8 is realized through the pressing depth of the coupling adjusting plate 5 on the cover plate 2 in the cavity between the adjacent resonant rods 8, and the debugging structure does not need a fixing nut any more, so that the structure is simplified, the integral height of the filter structure is not occupied, and compared with the traditional filter screw adjusting structure, the screw height is saved from the integral height, thereby being beneficial to the miniaturization design of filter products; for the mode of tuning frequency, this embodiment adopts the mode that sets up tuning plate 10 at resonance rod 8 top, sets up tuning hole 3 on the apron 2, utilizes the frock to penetrate to cavity 1 in from tuning hole 3 and adjust the deformation of tuning plate 10 on resonance rod 8 and come the tuning frequency, and the tuning mode is simple, and tuning plate 10 arranges inside cavity 1 moreover, need not to occupy the holistic height of filter structure equally, does benefit to the design of product miniaturization.

In a detailed embodiment, as shown in fig. 2, a partition plate 12 is disposed in the cavity 1, the cavity 1 is divided into two input and output chambers, the partition plate 12 can be integrally attached to the bottom of the cavity 1 by, for example, soldering or welding, the two input and output chambers are correspondingly provided with the resonant rods 8, the partition plate 12 is provided with a groove penetrating through the two input and output chambers, a cross coupling piece is disposed between the resonant rods 8 on the input side and the resonant rods 8 on the output side through the groove, the side walls of the cavity 1 corresponding to the two chambers are provided with the connection ports 6, and the connection ports 6 are connected with the resonant rods 8 in the corresponding chambers through the coupling piece 7.

In a specific embodiment, two tuning holes 3 correspond to each tuning plate 10, and the two tuning holes 3 are symmetrically located at two opposite edges of the tuning plate 10. The center of the top of the resonance rod 8 is provided with a bulge 9, and the tuning plate 10 is provided with a mounting hole 11 matched with the bulge 9, so that the tuning plate 10 is positioned at the top of the resonance rod 8.

In the embodiment, as shown in fig. 4, one end of the coupling adjustment plate 5 is connected to the inner side wall of the corresponding side of the coupling adjustment hole 4, and a gap 13 is left between the remaining side of the coupling adjustment plate 5 and the corresponding side of the coupling adjustment hole 4; of course, the connection between the coupling adjustment plate 5 and the coupling adjustment hole 4 can also be seen from fig. 5, wherein two opposite ends of the coupling adjustment plate 5 are connected with the inner side walls of the corresponding sides of the coupling adjustment hole 4, and a gap 13 is left between the remaining sides of the coupling adjustment plate 5 and the corresponding sides of the coupling adjustment hole 4. In other embodiments, the coupling adjustment hole 4 and the coupling adjustment plate 5 may be connected as shown in fig. 6, a gap 13 is left between the edge of the coupling adjustment plate 5 and the inner sidewall of the coupling adjustment hole 4, and the opposite sides of the coupling adjustment plate 5 symmetrically have extending portions 14 fixedly connected with the corresponding sides of the coupling adjustment hole 4. In the above embodiments, the coupling adjustment plate 5 and the coupling adjustment hole 4 may be designed to be rectangular, but not limited to rectangular structures. Preferably, the coupling adjusting plate 5 and the cover plate 2 are of an integral structure.

In summary, the filter debugging structure provided by the utility model adopts the cover plate as the tuning surface, the frequency is tuned by punching the cover plate and adjusting the deformation of the tuning plate on the resonance rod by using the tool, and the coupling between the resonance rods is adjusted by pressing the depth of the coupling adjusting plate by the slotting of the cover plate, so that the debugging performance index of the filter is realized.

The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the utility model, which is intended to be covered by the claims and any design similar or equivalent to the scope of the utility model.

Claims

1. A filter debugging structure, characterized in that: including cavity, apron and a plurality of resonance bar, the apron cover in on the cavity, the resonance bar interval is arranged on the bottom plate in the cavity to extend to the top by the bottom plate of cavity, each the tip that is close to the apron on the resonance bar all is connected with a tuning board, it is equipped with the tuning hole to correspond tuning board border department on the apron, it has seted up the coupling regulation hole to lie in the region between the adjacent resonance bar on the apron, install the coupling regulating plate in the coupling regulation hole, leave the gap between coupling regulating plate and the coupling regulation hole inside wall, just the coupling regulating plate is connected with coupling regulation hole inside wall part.

2. A filter debugging structure according to claim 1, characterized in that: each tuning plate corresponds to two tuning holes, and the two tuning holes are symmetrically positioned at two opposite edges of the tuning plate.

3. A filter debugging structure according to claim 1, characterized in that: the center of the top of the resonance rod is provided with a bulge, and the tuning plate is provided with a mounting hole matched with the bulge.

4. A filter debugging structure according to claim 1, characterized in that: one end or two opposite ends of the coupling adjusting plate are connected with the inner side wall of the corresponding side of the coupling adjusting hole, and a gap is reserved between the rest side of the coupling adjusting plate and the corresponding side of the coupling adjusting hole.

5. A filter debugging structure according to claim 1, characterized in that: a gap is reserved between the edge of the coupling adjusting plate and the inner side wall of the coupling adjusting hole, and extending portions which are fixedly connected with the corresponding side edges of the coupling adjusting hole are symmetrically arranged on the opposite sides of the coupling adjusting plate.

6. A filter adaptation structure as claimed in claim 4 or 5, characterized in that: the coupling adjusting plate and the cover plate are of an integral structure.

7. A filter debugging structure according to claim 1, characterized in that: the cavity is internally provided with a partition plate which divides the cavity into an input cavity and an output cavity, the side walls of the cavities corresponding to the two cavities are provided with connecting ports, and the connecting ports are connected with the resonance rods in the corresponding cavities through coupling pieces.

8. A filter debugging structure according to claim 1, characterized in that: the resonance rod and the bottom plate of the cavity are of an integrated structure.

9. A filter debugging structure according to claim 1, characterized in that: the bottom plate and the side wall of the cavity are of an integrated structure.