Combined cover plate and cavity filter

Abstract

The utility model discloses a combined type cover plate cavity filter. A combined type cover plate comprises a panel and a plurality of combined plates. The plurality of composition boards are spliced on one side of the panel, so that a positioning groove is formed between every two adjacent composition boards; a plurality of threaded holes are defined in the panel and the composition board; through the structure, the structure of the cover plate can be simpler, the machining difficulty is reduced, meanwhile, the product size, especially the accuracy and the consistency of the positioning grooves are guaranteed, all the sizes meet the tolerance requirement, and very good practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the field of cavity filters, in particular to a combined cover plate and a cavity filter. Background Art

[0002] Cavity filter is a very important filter. Compared with filters of other properties, it has the advantages of solid structure, stable and reliable performance, small size, moderate Q value, long high-end parasitic passband and good heat dissipation performance. It can be used for higher power and frequency.

[0003] Reference Figure 1 The cavity filter usually includes a cavity, a resonator, an adjusting screw assembly, a cover plate and partition ribs. During assembly, the adjusting screw assembly is installed on the cover plate, the resonator is installed in the cavity, and the partition ribs are limited between the cavity and the cover plate. However, in the cavity filter of this structure, the cover plate is an integrated structure, and screw holes for installing the adjusting screw assembly and a groove body for limiting the cover plate are processed on the cover plate. Not only is the structure complex, the processing is difficult and the cost is high, but also the precision requirements are high. At the same time, the wall thickness after processing is thin, and it is difficult to meet the requirements with general processing technology (such as powder metallurgy, stamping, cold heading, etc.).

[0004] Therefore, there is an urgent need for a combined cover plate and cavity filter to solve the above problems. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a combined cover plate and cavity filter.

[0006] The technical solution adopted by an embodiment of the utility model to solve the technical problem is: a combined cover plate, including a panel and a plurality of combined plates;

[0007] A plurality of combined boards are assembled on one side of the panel so as to form positioning grooves between adjacent combined boards;

[0008] A plurality of threaded holes are defined on the panel and the combination plate.

[0009] As one of the preferred embodiments of the utility model, a plurality of combined panels are assembled into a bottom panel, the bottom panel is located in the longitudinal projection of the panel, and there is a distance between the outer side surface of the bottom panel and the outer side surface of the panel to form a flange edge.

[0010] As one of the preferred embodiments of the utility model, a plurality of air-avoiding grooves are arranged on the combined plate.

[0011] As one of the preferred embodiments of the utility model, a plurality of combined plates are welded to the panel.

[0012] A cavity filter comprises a cavity, a resonator, a spacer, an adjusting screw assembly and the cover plate;

[0013] The cavity is provided with a mounting opening;

[0014] The cover plate is arranged at the installation opening;

[0015] The resonator is arranged in the cavity;

[0016] The adjusting screw assembly is connected in the threaded hole and arranged opposite to the resonator;

[0017] The partition rib is arranged in the cavity, one end of the partition rib is connected to the cavity, and the other end of the partition rib is inserted into the positioning groove.

[0018] As one of the preferred embodiments of the present utility model, the resonator includes a plurality of sheet metal resonant plates.

[0019] As one of the preferred embodiments of the present utility model, the cavity is made by sheet metal technology.

[0020] The beneficial effects of the utility model include: a combined cover plate cavity filter, the combined cover plate includes a panel and a plurality of combined plates; the plurality of combined plates are assembled on one side of the panel to form positioning grooves between adjacent combined plates; a plurality of threaded holes are defined on the panel and the combined plates; the above structure can make the structure of the cover plate simpler and reduce the processing difficulty, while also ensuring the accuracy and consistency of product dimensions, especially the positioning grooves, so that each dimension meets the tolerance requirements and has very good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is an exploded view of an existing cavity filter;

[0023] Figure 2 It is a first structural schematic diagram of a combined cover plate;

[0024] Figure 3 is a second structural schematic diagram of a combined cover plate;

[0025] Figure 4 The figure is an exploded view of a modular cover. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0027] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0030] Reference Figures 2 to 4 , a combined cover plate, comprising a panel 10 and a plurality of combined panels 20;

[0031] A plurality of combined panels 20 are assembled on one side of the panel 10 so that a positioning groove 30 is formed between adjacent combined panels 20;

[0032] A plurality of threaded holes 40 are defined on the panel 10 and the combination panel 20 .

[0033] In the present invention, firstly, threaded bottom holes are machined on the panel 10 and the combined plate 20, and then the panel 10 is placed on the tooling and a plurality of combined plates 20 are placed on the panel 10, so that the threaded bottom holes on the panel 10 correspond to the threaded bottom holes on the combined plate 20 one by one, and the concentricity between the threaded bottom holes meets the requirements; further, preferably, a laser welding device is used to sweep the gap between the panel 10 and the combined plate 20, so that the panel 10 and the combined plate 20 are tightly fitted together, and at the same time, a gap should be avoided as much as possible to prevent the electroplating liquid from remaining in the gap during electroplating and affecting the performance. It can be predicted that the connection method between the panel 10 and the combined plate 20 is not limited to laser welding; the welded panel 10 and the combined plate 20 are tapped along the threaded bottom holes to complete the combination of the cover plate; the advantages of the present invention are: the structure of the cover plate can be made simpler through the above structure, and the processing difficulty is reduced, while also ensuring the accuracy and consistency of the product size, especially the positioning groove, so that each size meets the tolerance requirements, and has very good practicality.

[0034] Preferably, several combined panels 20 are assembled into a base plate 21, and the base plate 21 is located within the longitudinal projection of the panel 10 and there is a distance between the outer side surface of the base plate and the outer side surface of the panel 10 to form a flange edge; when installed, the base plate 21 faces the cavity 10 and covers the installation opening 61 of the cavity 60, and the flange edge defined between the outer side surface of the base plate 21 and the outer side surface of the panel 10 abuts against the inner wall of the cavity 10, which can play a positioning role and also facilitates the welding of the panel 10 to the end face of the cavity 60.

[0035] Preferably, a plurality of air-avoiding grooves 50 are provided on the combined plate 20 to avoid air-avoiding components such as the resonator 70 .

[0036] A plurality of combined plates 20 are welded to the panel 10 .

[0037] A cavity filter comprises a cavity 60, a resonator 70, a spacer 80, a screw adjustment assembly 90 and the cover plate;

[0038] The cavity 60 is provided with a mounting opening 61;

[0039] The cover plate is provided at the mounting opening 61;

[0040] The resonator 70 is disposed in the cavity 60;

[0041] The adjusting screw assembly 90 is connected to the threaded hole 40 and arranged opposite to the resonator 70;

[0042] The partition rib 80 is disposed in the cavity 60 and has one end connected to the cavity 60 and the other end inserted into the positioning groove 30 .

[0043] Preferably, the resonator 70 includes a plurality of sheet metal resonant plates 71 .

[0044] Preferably, the cavity 60 is made by sheet metal processing.

[0045] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A combined cover plate, characterized in that: It comprises a panel (10) and a plurality of combined panels (20); A plurality of the combined panels (20) are assembled on one side of the panel (10) so that positioning grooves (30) are formed between adjacent combined panels (20); A plurality of threaded holes (40) are defined on the panel (10) and the combined panel (20).

2. A combined cover plate according to claim 1, characterized in that: A plurality of the combined panels (20) are assembled into a bottom panel (21), the bottom panel (21) is located within the longitudinal projection of the panel (10), and there is a distance between the outer side surface of the bottom panel and the outer side surface of the panel (10) to form a flange edge.

3. The combined cover plate according to claim 1, characterized in that: A plurality of air-avoiding grooves (50) are arranged on the combined plate (20).

4. The combined cover plate according to claim 1, characterized in that: A plurality of the combined plates (20) are welded to the panel (10).

5. A cavity filter, characterized in that: It comprises a cavity (60), a resonator (70), a spacer rib (80), an adjusting screw assembly (90), and the cover plate according to any one of claims 1 to 4; The cavity (60) is provided with a mounting opening (61); The cover plate is arranged on the installation opening (61); The resonator (70) is arranged in the cavity (60); The adjusting screw assembly (90) is connected to the threaded hole (40) and arranged opposite to the resonator (70); The partition rib (80) is disposed in the cavity (60) and has one end connected to the cavity (60) and the other end inserted into the positioning groove (30).

6. A cavity filter according to claim 5, characterized in that: The resonator (70) comprises a plurality of sheet metal resonant plates (71).

7. A cavity filter according to claim 5, characterized in that: The cavity (60) is made by sheet metal processing.

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