Combined debugging screw structure and cavity filter

Abstract

The utility model discloses a combined debugging screw structure and a cavity filter. The debugging screw structure comprises a mounting piece, a debugging piece and an elastic piece, the mounting piece is arranged on the cavity and / or the cover plate, a debugging cavity is formed in the mounting piece, and a debugging opening communicated with the debugging cavity is formed in the bottom wall; the debugging piece is movably arranged in the debugging cavity, and at least part of the debugging piece extends to the outer side through the debugging opening; the elastic piece is arranged between the mounting piece and the bottom wall of the mounting piece; the distance between the debugging piece and the resonator can be changed by adjusting the depth of the debugging piece extending into the debugging cavity; by cancelling a nut, the overall profile height of the filter can be reduced, debugging pieces made of different coupling materials can be replaced according to different performance indexes, and the filter has very good practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter field especially relates to a combined debugging screw rod structure and cavity filter. BACKGROUND

[0002] Filter is a kind of frequency selection device, is widely used in communication field, especially radio frequency communication field;Filter is used to select communication signal, filters out the noise or interference signal except communication signal;Cavity filter is a very important filter, compared with other properties filter, firm structure, stable and reliable performance, small size, Q value is moderate, high-end parasitic passband is far and good heat dissipation performance, can be used for larger power and frequency.

[0003] REFERENCE Figure 1 Communication base station filter structure is usually composed of cavity, resonator, cover plate, adjusting screw and input and output connector;The existing filter debugging is realized by adjusting the depth of screw rod, and nut is locked screw rod after adjusting, and in some cases, the scheme still has the problems of debugging falling debris, single coupling material etc.;Traditional scheme is optimized in view of the above problems. UTILITY MODEL CONTENT

[0004] The utility model at least solves one of the technical problems existing in the prior art. To this end, the utility model provides a combined debugging screw rod structure and cavity filter.

[0005] The technical scheme adopted by one embodiment of the utility model to solve its technical problem is as follows: a combined debugging screw rod structure, including mounting piece, debugging piece and elastic piece;

[0006] The mounting piece is installed on the cavity and / or cover plate, and the mounting piece is provided with a debugging cavity and a debugging opening in communication with the debugging cavity on the bottom wall;

[0007] The debugging piece is movably arranged in the debugging cavity and at least partially extends to the outside through the debugging opening;

[0008] The elastic piece is arranged between the mounting piece and the bottom wall of the mounting piece;

[0009] The depth of the debugging piece extending into the debugging cavity can be adjusted to change the distance between the debugging piece and the resonator.

[0010] As one of the preferred embodiments of the utility model, the debugging piece includes an adjusting part and a debugging part, at least part of the adjusting part is located in the debugging cavity and is threadedly connected with the mounting piece, one end of the debugging part is connected with the adjusting part, and at least part of the other end extends to the outside through the debugging opening.

[0011] As one of the preferred embodiments of the utility model, the adjusting part and the debugging part are integrally formed.

[0012] As one of the preferred embodiments of the utility model, the adjusting part is provided with a slot, and the debugging part is provided with a plug rod, which is inserted into the slot.

[0013] As one of the preferred embodiments of the utility model, the debugging part is provided with a first boss on the outer wall, and the adjusting part is abutted on the first boss.

[0014] As one of the preferred embodiments of the utility model, the second boss is arranged on the outer wall of the mounting part, and the second boss is abutted on the outer wall of the cavity and / or the cover plate when the mounting part is arranged on the cavity and / or the cover plate.

[0015] As one of the preferred embodiments of the utility model, the thickness of the bottom wall of the mounting part gradually decreases from the center of the debugging hole to the periphery.

[0016] As one of the preferred embodiments of the utility model, the mounting part is screw-connected to the cavity and / or the cover plate.

[0017] As one of the preferred embodiments of the utility model, the adjusting groove is arranged on the end of the debugging part away from the debugging hole.

[0018] A cavity filter comprising the debugging screw structure.

[0019] The utility model discloses a combined debugging screw structure and cavity filter, the debugging screw structure includes mounting part, debugging part and elastic part, the mounting part is arranged on the cavity and / or cover plate, and the mounting part is provided with debugging cavity, and the bottom wall is provided with the debugging hole that communicates with debugging cavity, the debugging part is movably arranged in the debugging cavity and at least part extends to the outside through the debugging hole, the elastic part is arranged between the mounting part and the bottom wall of mounting part, the depth of debugging part that extends into the debugging cavity can be adjusted, so that the distance between debugging part and resonator is changed, the overall profile height of filter can be reduced by canceling the nut, and the debugging part of different coupling materials can be replaced according to different performance indexes, and the utility model has very good practicability. ACCURACY OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0021] Figure 1 It is a structural schematic view of the existing debugging screw structure.

[0022] Figure 2 It is a structural schematic view of the first embodiment of the combined debugging screw structure.

[0023] Figure 3 It is an exploded view of the first embodiment of the combined debugging screw structure.

[0024] Figure 4 It is a sectional view of a first embodiment of a combined debugging screw structure;

[0025] Figure 5 It is a sectional view of a second embodiment of a combined debugging screw structure;

[0026] Figure 6 It is Figure 4 It is a local enlarged view of area A. DETAILED DESCRIPTION

[0027] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0028] In the description of the utility model, the meaning of multiple is two or more than two, greater than, less than, more than, etc. is not included in the number, above, below, etc. is included in the number. If it is described to the first, the second is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0029] In the description of the utility model, it is understood that the position description, such as the position or location relationship indicated by up, down, front, back, left, right, etc. is based on the position or location relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not used to indicate or imply that the device or element indicated must have a specific position, be constructed and operated in a specific position, so it cannot be understood as the limitation of the utility model.

[0030] In the utility model, unless otherwise explicitly limited, the words such as "set", "install", "connect" should be understood broadly, for example, it can be directly connected, or indirectly connected through an intermediate medium; it can be fixedly connected, or detachably connected, or integrally formed; it can be mechanically connected; it can be the communication or interaction relationship between two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0031] Referring to Figures 2 to 6 A combined debugging screw structure, comprising a mounting piece 10, a debugging piece 20 and an elastic piece 30;

[0032] The mounting piece 10 is arranged on the cavity 41 and / or the cover plate 42, the debugging cavity 11 is arranged on the mounting piece 10, the bottom wall is provided with the debugging opening 12 communicated with the debugging cavity 11;

[0033] The debugging piece 20 is movably arranged in the debugging cavity 11 and extends to the outside through the debugging opening 12 at least partially;

[0034] The elastic piece 30 is arranged between the mounting piece 10 and the bottom wall of the mounting piece 10;

[0035] The distance between the debugging piece 20 and the resonator can be changed by adjusting the depth of the debugging piece 20 extending into the debugging cavity 11.

[0036] In the utility model, the cavity filter includes a cavity 41, a cover plate 42, a resonator and an input and output connector, wherein the resonator is arranged in the cavity 41, the input and output connector is connected with the resonator, the cover plate 42 is arranged on the opening end of the cavity 41, and the debugging screw rod structure is arranged on the cover plate 42 as an example to be described:

[0037] 1) with reference to Figures 2-4 As a first embodiment of the utility model, the debugging piece 20 includes an adjusting part 21 and a debugging part 22, at least part of the adjusting part 21 is located in the debugging cavity 11 and is threadedly connected with the mounting piece 10, one end of the debugging part 22 is connected with the adjusting part 21, and the other end thereof extends to the outside through the debugging opening 12 at least partially; and the adjusting part 21 is provided with a slot 51, and the debugging part 22 is provided with a plug rod 52, the plug rod 52 is inserted into the slot 51.

[0038] Specifically, during assembly, first, the mounting piece 10 is arranged on the cover plate 42, preferably in a threaded connection mode, then the elastic piece 30 is sleeved on the debugging part 22 and is placed into the debugging cavity 11 of the mounting piece 10, then the adjusting part 21 is arranged in the debugging cavity 11 of the mounting piece 10, and the plug rod 52 on the debugging part 22 is inserted into the slot 51 on the adjusting part 21, and the adjusting part 21 is preferably threadedly connected with the mounting piece 10; the adjusting part 21 is forwardly rotated to push the debugging part 22 to move towards the inside of the cavity 41, so that the distance between the debugging part 22 and the resonator is reduced, or the adjusting part 21 is reversely rotated, so that the debugging part 22 moves towards the outside of the cavity 41 under the action of the elastic piece 30, so that the distance between the debugging part 22 and the resonator is increased, and the debugging of the filter is realized.

[0039] 2) in the utility model, with reference to Figure 5 As a second embodiment of the utility model, the debugging piece 20 includes an adjusting part 21 and a debugging part 22, at least part of the adjusting part 21 is located in the debugging cavity 11 and is threadedly connected with the mounting piece 10, one end of the debugging part 22 is connected with the adjusting part 21, and the other end thereof extends to the outside through the debugging opening 12 at least partially; and the adjusting part 21 and the debugging part 22 are integrally formed.

[0040] Specifically, during assembly, first, the mounting piece 10 is mounted on the cover plate 42, preferably by screwing, then the elastic piece 30 is sleeved on the adjusting part 22 and is placed into the adjusting cavity 11 of the mounting piece 10, and the adjusting part 21 is mounted in the adjusting cavity 11 of the mounting piece 10, and the connection between the adjusting part 21 and the mounting piece 10 is preferably screwing; by rotating the adjusting part 21 and the adjusting part 22 in the same direction, the whole moves towards the inside of the cavity 41, so that the distance between the adjusting part 22 and the resonator is reduced, or by rotating the adjusting part 21 and the adjusting part 22 in the opposite direction, the whole moves towards the outside of the cavity 41, so that the distance between the adjusting part 22 and the resonator is increased, thereby achieving the adjustment of the filter.

[0041] 3) The utility model discloses the advantage lies in: through cancel the nut, can reduce the overall section height of filter, and can replace the adjusting piece of different coupling material according to different performance index, has very good practicality.

[0042] In one embodiment, a first boss 61 is arranged on the outer wall of the adjusting part 22, and the adjusting part 21 abuts against the first boss 61; the first boss 61 is arranged to limit the adjusting part 21 and the adjusting part 22 and to support the elastic piece 30 and the bottom wall of the mounting piece 10.

[0043] In one embodiment, a second boss 62 is arranged on the outer wall of the mounting piece 10, and the second boss 62 can abut against the outer wall of the cavity 41 and / or the cover plate 42 when the mounting piece 10 is mounted on the cavity 41 and / or the cover plate 42.

[0044] In one embodiment, the thickness of the bottom wall of the mounting piece 10 gradually decreases from the center of the adjusting opening 12 to the periphery; this arrangement can make the adjusting cavity 11 of the mounting piece 10 a closed cavity with a bottom inwardly tapered, so that the generated debris falls into the closed cavity, preventing the debris from falling into the cavity 41.

[0045] Preferably, the mounting piece 10 is screwed to the cavity 41 and / or the cover plate 42.

[0046] In one embodiment, an adjusting groove 70 is arranged on the end of the adjusting piece 20 away from the adjusting opening 12; the adjusting groove 70 can be a hexagonal boss, a hexagonal groove, a cross groove or a slot, which can facilitate the driving of the adjusting piece 20 to move in the same direction or the opposite direction.

[0047] A cavity filter comprising the adjusting screw structure.

[0048] Of course, the utility model is not limited to the above-mentioned embodiment, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications and replacements are all included in the range defined by the claims of the present application.

Claims

1. A combined commissioning screw structure, characterized by: The adjusting screw structure comprises a mounting member (10), an adjusting member (20) and an elastic member (30); The mounting member (10) is arranged on a cavity (41) and / or a cover plate (42), and the mounting member (10) is provided with an adjusting cavity (11) and an adjusting opening (12) in communication with the adjusting cavity (11) on a bottom wall thereof; The adjusting member (20) is movably arranged in the adjusting cavity (11) and extends to the outside through the adjusting opening (12) at least partially; The elastic member (30) is arranged between the mounting member (10) and the bottom wall of the mounting member (10); The distance between the adjusting member (20) and the resonator can be changed by adjusting the depth of the adjusting member (20) extending into the adjusting cavity (11).

2. A combined commissioning screw structure according to claim 1, characterized in that: The adjusting member (20) comprises an adjusting part (21) and an adjusting part (22), at least part of the adjusting part (21) is located in the adjusting cavity (11) and is threadedly connected with the mounting member (10), one end of the adjusting part (22) is connected with the adjusting part (21), and the other end of the adjusting part (22) extends to the outside through the adjusting opening (12) at least partially.

3. A combined commissioning screw structure according to claim 2, characterized in that: The adjusting part (21) and the adjusting part (22) are integrally formed.

4. A combined adjustment screw structure according to claim 2, characterized in that: The adjusting part (21) is provided with a slot (51), and the adjusting part (22) is provided with a plug rod (52) inserted into the slot (51).

5. A combined adjustment screw structure according to claim 2, characterized in that: A first boss (61) is arranged on the outer wall of the adjusting part (22), and the adjusting part (21) abuts against the first boss (61).

6. A combined commissioning screw structure according to claim 1, characterized in that: A second boss (62) is arranged on the outer wall of the mounting member (10), and the second boss (62) can abut against the outer wall of the cavity (41) and / or the cover plate (42) when the mounting member (10) is arranged on the cavity (41) and / or the cover plate (42).

7. A combined adjustment screw structure according to claim 1, characterized in that: The thickness of the bottom wall of the mounting member (10) gradually decreases from the center of the adjusting opening (12) to the periphery.

8. A combined adjustment screw structure according to claim 1, characterized in that: The mounting member (10) is threadedly connected with the cavity (41) and / or the cover plate (42).

9. A combined adjustment screw structure according to claim 1, characterized in that: An adjusting groove (70) is arranged on the end of the adjusting member (20) away from the adjusting opening (12).

10. A cavity filter characterized by: The adjusting screw structure comprises the adjusting screw structure according to any one of claims 1-9.

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