CN214797669U - Filter structure suitable for filter suppression index is adjustable - Google Patents

Abstract

The utility model discloses a filter structure suitable for filter restraines index adjustable, including the filter cavity, the resonance space has been seted up to the inner wall of filter cavity, the resonance space includes the resonant cavity, and is adjacent two the coupling window has been seted up between the resonant cavity, the downside of filter cavity is provided with the filter apron, the inboard of filter apron is provided with the installing zone, the mounting groove has been seted up to the inside of installing zone, install the medium on the mounting groove, one side in resonance space is provided with the reservation chamber, the reservation groove has been seted up to one side of installing zone. The utility model discloses a one side in resonance space on the wave filter cavity is equipped with reserves the chamber, and when the follow-up suppression that wants to promote the wave filter, only need open corresponding resonant cavity and reserve the window between the chamber, need not repair the mould once more, practices thrift redesign and the time of making an appearance once more, saves the processing cost, improves the productivity effect.

Description

Filter structure suitable for filter suppression index is adjustable

Technical Field

The utility model relates to a wave filter field, concretely relates to be applicable to wave filter suppression index adjustable filter structure.

Background

Filters, as the name implies, are devices that filter waves. The filter can effectively filter the frequency point of the specific frequency in the power line or the frequencies except the frequency point to obtain a power signal of the specific frequency or eliminate the power signal of the specific frequency. With the rapid development of the mobile communication field, the demand for high-rejection, low-loss and high-power filters is increasing.

The structure of a common filter is already fixed from the beginning of design, and the subsequent filter is required to be redesigned to improve the suppression of the filter, and particularly, the structure is required to be optimized again after the mold is opened, which is time-consuming and increases the processing cost and the material cost.

Therefore, it is desirable to provide a filter structure with adjustable filter suppression index to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be applicable to wave filter restraines index adjustable filter structure is equipped with the reservation chamber through one side in the resonance space on the wave filter cavity, and when the follow-up suppression that wants to promote the wave filter, only need open corresponding resonant cavity and reserve the window between the chamber to solve the above-mentioned weak point in the technique.

In order to achieve the above object, the present invention provides the following technical solutions: a filter structure suitable for adjusting suppression indexes of a filter comprises a filter cavity, wherein the inner wall of the filter cavity is provided with three resonance spaces, the three resonance spaces are different in shape and comprise resonant cavities, the number of the resonant cavities is six, a coupling window is arranged between every two adjacent resonant cavities, each resonance space consists of six adjacent resonant cavities, a containing groove is formed in the middle of each coupling window, a filter cover plate is arranged on the lower side of the filter cavity, mounting areas are arranged on the inner side of the filter cover plate, the number of the mounting areas is three, the positions of the three mounting areas correspond to the positions of the three resonance spaces respectively, and the shapes of the three mounting areas correspond to the cross-sectional shapes of the three resonance spaces, the utility model discloses a resonant cavity, including installing zone, mounting groove, resonant space, reservation groove, resonant space, the mounting groove has been seted up to the inside of installing zone, the quantity of mounting groove is provided with six, every the installing zone is by six the mounting groove is constituteed, the position of mounting groove is corresponding with the position of resonant cavity, install the medium on the mounting groove, one side in resonant space is provided with the reservation chamber, the reservation groove has been seted up to one side of installing zone, the position of reservation groove is corresponding with the position in reservation chamber.

Preferably, the lower end of the medium is nested in the mounting groove, the medium is connected with the mounting groove through an adhesive, and the upper end of the medium is nested in the resonant cavity.

Preferably, the number of the reserved cavities and the number of the reserved grooves are two, and the size of each reserved cavity is the same as that of the resonant cavity.

Preferably, the filter cavity and the filter cover plate are connected through a locking bolt.

Preferably, threaded holes are formed in the inner wall of the filter cavity, the number of the threaded holes is multiple, the threaded holes are distributed in the inner wall of the filter cavity, mounting holes are formed in the filter cover plate and penetrate through the inner side and the outer side of the filter cover plate, the number of the mounting holes is multiple, the positions of the mounting holes correspond to the positions of the threaded holes, the locking bolts are nested in the mounting holes, and the tail ends of the locking bolts are in threaded connection with the threaded holes.

Preferably, two adjacent resonant cavities are communicated through a coupling window.

Preferably, the inner wall of the resonant cavity is coated with a dielectric layer.

In the technical scheme, the utility model provides a technological effect and advantage:

one side through the resonance space on the wave filter cavity is equipped with the reservation chamber, when later wanting to promote the suppression of wave filter, only need open corresponding resonant cavity and reserve the window between the chamber, need not repair the mould once more, practices thrift redesign and the time of drawing a design once more, saves the processing cost, shortens the shelf life, improves the productivity effect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the filter cavity of the present invention;

fig. 3 is a schematic diagram of the filter cover plate of the present invention;

FIG. 4 is a schematic diagram of the media of the present invention;

fig. 5 is a front view of the media of the present invention.

Description of reference numerals:

the filter comprises a filter cavity 1, a resonance space 2, a resonant cavity 3, a coupling window 4, a containing groove 5, a filter cover plate 6, a mounting area 7, a mounting groove 8, a medium 9, a bonding agent 10, a threaded hole 11, a mounting hole 12, a reserved cavity 13 and a reserved groove 14.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides a filter structure suitable for filter suppression index is adjustable as shown in figures 1-5, including filter cavity 1, resonance space 2 is opened on the inner wall of filter cavity 1, the number of resonance space 2 is three, the shape of three resonance space 2 is different, resonance space 2 includes resonant cavity 3, the number of resonant cavity 3 is six, coupling window 4 is opened between two adjacent resonant cavities 3, each resonance space 2 is composed of six adjacent resonant cavities 3, holding tank 5 is opened in the middle of coupling window 4, filter cover plate 6 is arranged on the lower side of filter cavity 1, mounting area 7 is arranged on the inner side of filter cover plate 6, the number of mounting area 7 is three, the positions of three mounting area 7 correspond to the positions of three resonance space 2 respectively, three the shape of installing zone 7 is with three the cross sectional shape in resonance space 2 is corresponding, mounting groove 8 has been seted up to the inside of installing zone 7, the quantity of mounting groove 8 is provided with six, every installing zone 7 is by six the mounting groove 8 is constituteed, the position of mounting groove 8 is corresponding with the position of resonant cavity 3, install medium 9 on the mounting groove 8, one side in resonance space 2 is provided with reserve chamber 13, reserve groove 14 has been seted up to one side of installing zone 7, reserve groove 14's position is corresponding with reserve chamber 13's position.

Further, in the above technical scheme, the lower end of the medium 9 is nested in the mounting groove 8, the medium 9 is connected with the mounting groove 8 through the adhesive 10, and the upper end of the medium 9 is nested in the resonant cavity 3, so that the medium 9 is stably and firmly mounted on the filter cover plate 6 and is not easy to fall off.

Further, in the above technical solution, the number of the reserved cavities 13 and the reserved slots 14 is two, the size of the reserved cavity 13 is the same as that of the resonant cavity 3, and when the suppression of the filter is to be promoted subsequently, only the window between the corresponding resonant cavity 3 and the reserved cavity 13 needs to be opened, and the mold repairing is not required again, so that the time for redesigning and re-proofing is saved.

Furthermore, in the technical scheme, the filter cavity 1 is connected with the filter cover plate 6 through the locking bolt, so that the connection is simple and the fixation is firm.

Further, in the above technical scheme, threaded holes 11 are formed in the inner wall of the filter cavity 1, the number of the threaded holes 11 is multiple, the threaded holes 11 are distributed in the inner wall of the filter cavity 1, mounting holes 12 are formed in the filter cover plate 6, the mounting holes 12 penetrate through the inner side and the outer side of the filter cover plate 6, the number of the mounting holes 12 is multiple, the positions of the mounting holes 12 correspond to the positions of the threaded holes 11, the locking bolts are nested in the mounting holes 12, the tail ends of the locking bolts are in threaded connection with the threaded holes 11, connection between the filter cavity 1 and the filter cover plate 6 is facilitated, connection is simple, and fixation is firm.

Further, in the above technical solution, two adjacent resonant cavities 3 are communicated through a coupling window 4.

Further, in the above technical solution, the inner wall of the resonant cavity 3 is coated with a dielectric layer, which improves the performance of the resonant cavity 3.

The implementation mode is specifically as follows: during assembly, only a medium 9 needs to be fixed on a corresponding mounting groove 8 on a filter cover plate 6 through a binder 10, then the filter cover plate 6 and a filter cavity 1 are assembled through a locking bolt, the assembly of the whole filter is completed, the filter cavity 1 fully considers the structural layout and the improvement of filter inhibition indexes at the beginning of design, on the premise of meeting the requirement of the existing indexes, the space is fully utilized, a reserved cavity 13 is arranged on one side of a resonance space 2, when the inhibition of the filter is to be improved subsequently, only a window between a corresponding resonant cavity 3 and the reserved cavity 13 needs to be opened, the secondary die repair is not needed, the time of redesign and secondary proofing is saved, the processing cost is saved, the shelf life is shortened, the production benefit is improved, and the implementation mode particularly solves the problem that the common filter existing in the prior art is already shaped from the initial structure of design, subsequent attempts to improve filter rejection require redesign, especially when the structure is optimized again after mold opening, which is time consuming and increases processing and material costs.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (7)

1. A filter structure adapted for filter rejection indicator adjustment, comprising a filter cavity (1), characterized in that: the filter comprises a filter cavity (1), and is characterized in that the inner wall of the filter cavity (1) is provided with three resonance spaces (2), the number of the resonance spaces (2) is three, the shape of the three resonance spaces (2) is different from that of the three resonance spaces (2), each resonance space (2) comprises a resonant cavity (3), the number of the resonant cavities (3) is six, a coupling window (4) is arranged between every two adjacent resonant cavities (3), each resonance space (2) consists of six adjacent resonant cavities (3), the middle part of each coupling window (4) is provided with an accommodating groove (5), the lower side of the filter cavity (1) is provided with a filter cover plate (6), the inner side of each filter cover plate (6) is provided with an installation area (7), the number of the installation areas (7) is three, and the positions of the three installation areas (7) correspond to the positions of the three resonance spaces (2) respectively, three the shape of installing zone (7) is with three the cross sectional shape in resonance space (2) is corresponding, mounting groove (8) have been seted up to the inside of installing zone (7), the quantity of mounting groove (8) is provided with six, every installing zone (7) are by six mounting groove (8) are constituteed, the position of mounting groove (8) is corresponding with the position of resonant cavity (3), install medium (9) on mounting groove (8), one side of resonance space (2) is provided with reserve chamber (13), reserve tank (14) have been seted up to one side of installing zone (7), the position of reserve tank (14) is corresponding with the position of reserve chamber (13).

2. A filter structure adapted for filter suppression index adjustment according to claim 1, wherein: the lower end of the medium (9) is nested in the mounting groove (8), the medium (9) is connected with the mounting groove (8) through a bonding agent (10), and the upper end of the medium (9) is nested in the resonant cavity (3).

3. A filter structure adapted for filter suppression index adjustment according to claim 1, wherein: the number of the reserved cavities (13) and the number of the reserved grooves (14) are two, and the size of each reserved cavity (13) is the same as that of the resonant cavity (3).

4. A filter structure adapted for filter suppression index adjustment according to claim 1, wherein: the filter cavity (1) is connected with the filter cover plate (6) through a locking bolt.

5. The filter structure of claim 4, wherein the filter structure is adapted to adjust filter suppression metrics, and wherein: threaded hole (11) are seted up to the inner wall of wave filter cavity (1), the quantity of threaded hole (11) is provided with a plurality ofly, and is a plurality of threaded hole (11) distribute at the inner wall of wave filter cavity (1), mounting hole (12) have been seted up on wave filter apron (6), the inside and outside both sides of wave filter apron (6) are run through in mounting hole (12), the quantity of mounting hole (12) is provided with a plurality ofly, and is a plurality of the position of mounting hole (12) is with a plurality of the position of threaded hole (11) is corresponding, locking bolt nestification is in mounting hole (12), threaded connection between locking bolt's tail end and threaded hole (11).

6. A filter structure adapted for filter suppression index adjustment according to claim 1, wherein: two adjacent resonant cavities (3) are communicated through a coupling window (4).

7. A filter structure adapted for filter suppression index adjustment according to claim 1, wherein: the inner wall of the resonant cavity (3) is coated with a dielectric layer.

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