CN218849752U - Coupling adjustment assembly and filter - Google Patents

Abstract

The application provides a coupling adjustment assembly and a filter. The installation part of the first coupling piece is rotatably installed on a preset part, the orientation of the coupling part can be adjusted by rotating the installation part, and then the distance and/or the relative area between the coupling part and the resonant rod can be changed, so that the adjustment of the coupling strength between the two resonant rods is realized. The screw rod piece and the installation part of second coupling piece threaded connection can change the length that the screw rod piece wore out the installation part through revolving the screw rod piece, change the relative area of screw rod piece and resonance bar, realize the regulation of coupling strength between two resonance bars. Under the same filter size, compared with a filter adopting a conventional coupling rod, the filter adopting the coupling adjusting component is basically unchanged in overall size after the first coupling piece and the second coupling piece are configured, and the adjusting ranges of the coupling strength between the two resonance rods can be overlapped by the first coupling piece and the second coupling piece, so that the adjusting range of the coupling strength between the two resonance rods is larger, and the miniaturization requirement of the filter is better met.

Description

Coupling adjustment assembly and filter

Technical Field

The application belongs to the technical field of communication equipment, and particularly relates to a coupling adjusting component and a filter.

Background

The cavity filter is widely applied to the field of communication as a frequency selection device. In a communication device, a filter is used to select a communication signal and filter out spurious or interference signals outside the frequency of the communication signal. The filter in the conventional technology comprises a cavity, a cover plate, resonance rods and coupling rods, wherein the cover plate is installed on the cavity, the resonance rods and the coupling rods are located inside the cavity, the coupling rods are arranged between two adjacent resonance rods, the coupling rods can be provided with coupling pieces, and the coupling rods can strengthen or adjust the coupling strength between the two resonance rods.

For the coupling rod with the function of adjusting the coupling strength, the relative area between the coupling rod and two adjacent resonance rods can be changed by rotating the coupling rod, or the distance and/or the relative area between the coupling sheet and the two resonance rods can be changed, so that the coupling strength between the two resonance rods can be adjusted. Under the requirement of miniaturization of the filter, when the conventional coupling rod is adopted, the adjustment range of the coupling strength between the two resonance rods is small.

SUMMERY OF THE UTILITY MODEL

An object of the embodiments of the present application is to provide a coupling adjustment assembly and a filter, so as to solve the technical problem that the adjustment range of the coupling strength between two resonant rods is small by a conventional coupling rod.

An embodiment of the present application provides a coupling adjustment assembly, including: a first coupling and a second coupling;

the first coupling piece comprises a mounting part and a coupling part, the mounting part is rotatably mounted on a preset component, the mounting part is provided with a connecting hole, and the coupling part is connected to the mounting part and can rotate along with the mounting part;

the second coupling piece comprises a screw rod piece, the screw rod piece is in threaded fit with the inner wall of the connecting hole, the screw rod piece is provided with a first end and a second end which are arranged oppositely, and the first end penetrates out of the connecting hole and is arranged adjacent to the coupling portion.

Optionally, the first coupling piece further comprises a fixing part connected to the mounting part, and the fixing part is used for limiting the mounting part on the predetermined component.

Optionally, a limiting part is arranged at one end of the mounting part, which is far away from the coupling part, and the fixing part and the limiting part are detachably connected;

when the limiting part is connected with the fixing part, the fixing part is used for being abutted against the preset component to limit the mounting part on the preset component.

Optionally, the limiting part and the fixing part are in plug-in connection, clamping connection, threaded connection or knurled crimping connection.

Optionally, the limiting portion is a threaded portion, the fixing portion is a nut member, and the nut member is screwed to the threaded portion at a position close to the coupling portion;

or, spacing portion is for locating annular on the installation department, the fixed part is the jump ring, the jump ring joint is in on the annular.

Optionally, a fixing structure is arranged on the mounting portion, and the fixing structure is used for abutting against the inner side face of the predetermined component.

Optionally, the coupling part has a mounting hole, and the mounting part has a buckle, and the buckle can pass through the mounting hole and be in clamping fit with the coupling part.

Optionally, the buckle comprises a resilient arm and a boss connected to the resilient arm, the boss having a guide surface;

in the process that the elastic arm penetrates through the mounting hole, the guide surface is in butt fit with the wall surface of the mounting hole so that the elastic arm can be bent and retracted.

Optionally, the second end of the screw member is provided with a locking member for limiting the screw member on the first coupling member.

Optionally, the second end of the screw rod is provided with an adjusting slot for cooperating with an external tool to drive the screw rod to rotate.

Optionally, the mounting portion and the coupling portion are of an integral structure;

or, the mounting part and the coupling part are assembly structures.

The embodiment of the application provides a filter, including: the resonant cavity comprises a cavity body, a cover plate, a plurality of resonant rods and at least one coupling adjusting component, wherein the cover plate covers the cavity body, and the plurality of resonant rods are positioned in the cavity body and connected to the cavity body or the cover plate; the cover plate or the cavity is provided with a through hole, and the mounting part is rotatably mounted at the through hole.

Optionally, the mounting portion and the through hole are in tight fit.

The beneficial effect of the coupling adjusting part and the filter that this application provided lies in: the mounting part of the first coupling piece is rotatably mounted on a predetermined part, the orientation of the coupling part can be adjusted by rotating the mounting part, and then the distance and/or the relative area between the coupling part and the resonant rod can be changed, so that the coupling strength between the two resonant rods can be adjusted. The screw rod piece and the installation part threaded connection of second coupling piece can change the length that the screw rod piece wore out the installation part through revolving screw rod piece, change the relative area of screw rod piece and resonance bar, realize the regulation of coupling strength between two resonance bars. Under the same filter size, compared with a filter adopting a conventional coupling rod, the filter adopting the coupling adjusting assembly provided by the invention has the advantages that the overall size is basically unchanged after the first coupling piece and the second coupling piece are configured, and the adjusting ranges of the coupling strength between the two resonance rods can be overlapped by the first coupling piece and the second coupling piece, so that the adjusting range of the coupling strength between the two resonance rods is larger, and the miniaturization requirement of the filter is better met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective assembly view of a filter provided in an embodiment of the present application;

FIG. 2 is an exploded perspective view of the filter of FIG. 1;

FIG. 3 isbase:Sub>A cross-sectional view of the filter of FIG. 1 taken along line A-A;

fig. 4 is a top view of the filter of fig. 1 with the cover plate removed;

fig. 5 is a schematic structural diagram of a filter according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a filter according to another embodiment of the present application;

fig. 7 is a schematic structural diagram of a filter according to another embodiment of the present application;

fig. 8 is a schematic structural diagram of a filter according to another embodiment of the present application;

FIG. 9 is an assembled perspective view of a coupling adjustment assembly provided in accordance with an embodiment of the present application;

FIG. 10 is an exploded perspective view of the coupling adjustment assembly of FIG. 9;

FIG. 11 is an assembled perspective view of a coupling adjustment assembly provided in accordance with another embodiment of the present application;

FIG. 12 is an exploded perspective view of the coupling adjustment assembly of FIG. 11;

fig. 13 is a schematic structural diagram of a filter according to another embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the embodiments of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the embodiments of the present application and for simplicity in 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 embodiments of the present application.

Furthermore, 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 application, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

One filter in the related art adopts a screw-type coupling rod, the screw-type coupling rod is in threaded connection with a cover plate, and the depth of the coupling rod entering a cavity is changed through rotation so as to change the relative areas of the coupling rod and two resonance rods, thereby adjusting the coupling strength between the two resonance rods.

By adopting the screw type coupling rod, the adjusting range of the coupling strength between the two resonance rods is smaller. To increase the adjustment range, the outer diameter or length of the coupling rod needs to be increased. On one hand, the cavity arrangement of the filter is usually designed, and the outer diameter or length of the coupling rod is difficult to change; on the other hand, even if the outer diameter and the length of the coupling rod are increased, the maximum adjustment amount that can be achieved may not necessarily satisfy the demand; furthermore, if the length of the coupling rod is increased in order to increase the adjustment range, the coupling rod needs to be continuously screwed downwards; if the coupling rod is too short, the whole coupling rod can be screwed into the adjusting range; if the coupling rod is too long, the problem of high-power ignition can easily occur when the distance between the coupling rod and the bottom of the cavity is small.

Another filter among the relevant art adopts the rotation type coupling pole, and the rotation type coupling pole can only rotate around the axis, does not have axial displacement, and the coupling pole is fixed with the coupling piece, drives the coupling piece through rotating the coupling pole and rotates, and then changes the interval or relative area of coupling piece and two resonance bars to adjust the coupling intensity between two resonance bars.

By adopting the rotary coupling rod, the relative area between the coupling sheet and the resonance rod is changed only by means of rotating, the adjusting range is small, and the adjusting range of the coupling strength is difficult to increase. If the adjustment range is to be enlarged, the area of the coupling piece needs to be increased, which occupies too large space inside the filter, and is not only hard to allow in design, but also not beneficial to miniaturizing the filter.

Referring to fig. 1 to 4, an embodiment of the present invention provides a filter 1000, which includes a cavity 200, a cover plate 300, a plurality of resonant rods 400 and at least one coupling adjustment assembly 100, wherein the cover plate 300 covers the cavity 200, and the plurality of resonant rods 400 are located in the cavity 200 and connected to the cavity 200 or the cover plate 300. The cover plate 300 or the cavity 200 has a through hole 1001, and the coupling adjustment assembly 100 is disposed at the through hole 1001.

The cover plate 300 covers the cavity 200 to form a closed cavity, so that a shielding function can be realized and signal leakage can be prevented. The cover plate 300 and the cavity 200 may be made of a metal material. The cavity 200 and the cover plate 300 may be fixed by screws, snap, adhesive or other means.

More than two resonant cavities 201 are arranged in the cavity 200, and a resonant rod 400 can be arranged in each resonant cavity 201. In fig. 3, two resonant cavities 201 are divided by a dotted line inside the cavity 200. The number of resonant cavities 201 is set as desired. The resonant bar 400 may be coupled to the cavity 200 or the cap plate 300.

The coupling adjustment assembly 100 may be disposed at the chamber body 200 or the cover plate 300. There are a variety of alternative implementations in arranging the resonant tank bar 400 and the coupling adjustment assembly 100. In the embodiment shown in fig. 3, the resonant bar 400 is connected to the cavity 200, and the coupling adjustment assembly 100 is disposed at the through hole 1001 of the cap plate 300. In the embodiment shown in fig. 5, the resonant bar 400 is attached to the cover plate 300, and the coupling adjustment assembly 100 is disposed at the through hole 1001 of the cavity 200. In the embodiment shown in fig. 6, the resonant bar 400 is connected to the cavity 200, and the coupling adjustment member 100 is disposed at the through hole 1001 of the cavity 200. In the embodiment shown in fig. 7, the resonance bar 400 is attached to the cover plate 300, and the coupling adjustment assembly 100 is disposed at the through-hole 1001 of the cover plate 300.

Referring to fig. 3, the resonant rod 400 and the cavity 200 (or the cover plate 300) may be an integral structure or an assembled structure. When the assembly structure is adopted, the resonant rod 400 may be mounted on the cavity 200 (or the cap plate 300) by riveting, crimping, screw fastening, screwing, welding, clamping, or the like.

Referring to fig. 3, the resonant bar 400 may have an open mouth or be a solid structure. The resonant rod 400 may be a metal resonant rod, a ceramic dielectric resonant rod, or a resonant rod made of other materials. The resonant bar 400 may be in the form of a circular bar, a polygonal bar, a profiled bar, etc. The resonant rod 400 may have a resonant disk or no resonant disk.

The coupling adjustment assembly 100 may be used as a coupling rod or a flying rod when applied to the filter 1000. The coupling rod or the flying rod plays roles in enhancing the coupling strength, adjusting the coupling strength and controlling the coupling mode.

Referring to fig. 3, when the coupling adjustment assembly 100 is disposed between two adjacent and coupled resonant rods 400, the coupling adjustment assembly 100 is used as a coupling rod, and the distance and/or coupling area between the coupling adjustment assembly 100 and the two resonant rods 400 can be changed by adjusting the coupling adjustment assembly 100, so as to change the coupling strength between the two resonant rods 400.

Referring to fig. 8, when the coupling adjustment assembly 100 is disposed between two non-adjacent resonant rods 400, the coupling adjustment assembly 100 is used as a flying rod, and the coupling adjustment assembly 100 is disposed in the window 202 of the cavity 200 for forming cross coupling between the two resonant rods 400 respectively disposed at two sides of the window 202. By adjusting the coupling adjustment assembly 100, the distance and/or coupling area of the coupling adjustment assembly 100 relative to the two resonant rods 400 on the two sides of the window 202 can be changed, thereby realizing debugging of out-of-band rejection of the passband and adjusting the transmission zero point of the filtering channel.

Referring to fig. 3, 9 and 10, a coupling adjustment assembly 100 includes a first coupling member 10 and a second coupling member 20. The first coupling element 10 includes a mounting portion 11 and a coupling portion 12, the mounting portion 11 is rotatably mounted on a predetermined member, the mounting portion 11 has a coupling hole 111, and the coupling portion 12 is coupled to the mounting portion 11 and can rotate following the mounting portion 11. The second coupling member 20 includes a screw member 21, the screw member 21 is in threaded engagement with an inner wall of the connection hole 111, the screw member 21 has a first end 21a and a second end 21b disposed opposite to each other, and the first end 21a is extended out of the connection hole 111 and disposed adjacent to the coupling portion 12.

In conjunction with fig. 2 and 3, the predetermined component may be a cavity 200 or a cover 300 of the filter 1000, the coupling adjustment assembly 100 is mounted on the cavity 200 or the cover 300, and the cavity 200, the cover 300, the resonant rod 400 and the coupling adjustment assembly 100 are combined to form the filter 1000.

Referring to fig. 3, the cavity 200 or the cap plate 300 has a through hole 1001, the mounting part 11 of the first coupling member 10 is rotatably mounted at the through hole 1001, and the coupling part 12 is located in the cavity 200 and spaced apart from the resonance bar 400. The screw member 21 of the second coupling member 20 extends out of the mounting portion 11 and is located in the cavity 200, and the second coupling member 20 and the resonant rod 400 are arranged at intervals.

In the coupling adjustment assembly 100 provided by the present application, the mounting portion 11 of the first coupling element 10 is rotatably mounted on a predetermined component, and the orientation of the coupling portion 12 can be adjusted by rotating the mounting portion 11, so that the distance and/or the relative area between the coupling portion 12 and the resonant rod 400 can be changed, and the coupling strength between the two resonant rods 400 can be adjusted. The screw member 21 of the second coupling member 20 is in threaded connection with the mounting portion 11, the length of the screw member 21 penetrating out of the mounting portion 11 can be changed by screwing the screw member 21, the relative area of the screw member 21 and the resonance rod 400 is changed, and the coupling strength between the two resonance rods 400 is adjusted. Under the same size of the filter 1000, compared with a filter using a conventional coupling rod, the filter 1000 using the coupling adjustment assembly 100 of the present application has an overall size that is substantially unchanged after the first coupling element 10 and the second coupling element 20 are configured, and the adjustment ranges of the coupling strength between the two resonant rods 400 by the first coupling element 10 and the second coupling element 20 can be overlapped, so that the adjustment range of the coupling strength between the two resonant rods 400 is larger, and the miniaturization requirement of the filter 1000 is better satisfied.

The coupling adjusting assembly 100 can avoid the condition that the adjusting range of a single screw type coupling rod or a rotary type coupling rod in the related art does not meet the index requirement, solves the problems of high-power ignition and the like which possibly occur when the adjusting amount of the screw type coupling rod in the related art is increased, has larger adjustable range of the coupling strength between the two resonance rods 400 by the coupling adjusting assembly 100, and improves the product performance index and the reliability of the filter 1000.

When the coupling adjustment assembly 100 provided in the embodiment of the present application is applied to the filter 1000, the filter 1000 includes a cavity 200, a cover plate 300, a plurality of resonant rods 400 and at least one coupling adjustment assembly 100, the cover plate 300 covers the cavity 200, and the plurality of resonant rods 400 are located in the cavity 200 and connected to the cavity 200 or the cover plate 300. The cover plate 300 or the cavity 200 has a through hole 1001, and the mounting part 11 of the first coupling member 10 is rotatably mounted at the through hole 1001.

The sequential adjustment order of the first coupling member 10 and the second coupling member 20 is not limited when adjusting the coupling adjustment assembly 100. The first coupling strength adjustment sequence is; the first coupling member 10 is rotated first to change the relative area and/or distance between the coupling part 12 and the resonance bar 400, thereby adjusting the coupling strength to some extent. The screw member 21 of the second coupling member 20 is screwed to change the relative area between the screw member 21 and the resonant rod 400, so as to further adjust the coupling strength.

The second coupling strength adjustment sequence is; the screw member 21 of the second coupling member 20 is first screwed so that the relative area of the screw member 21 and the resonance bar 400 is changed, and the coupling strength is adjusted to some extent. The first coupling member 10 is rotated again to change the relative area and/or distance between the coupling portion 12 and the resonance rod 400, thereby further adjusting the coupling strength.

When the mounting portion 11 of the first coupling element 10 and the through hole 1001 of the predetermined component are provided, referring to fig. 3 and 10, the mounting portion 11 is substantially tubular, so that the mounting portion 11 is conveniently inserted into the through hole 1001 of the predetermined component. The through hole 1001 is a smooth hole, is easy to process, and can provide a rotation condition for the mount portion 11. Through-hole 1001 may be a circular hole, polygonal hole, or the like, so that mounting portion 11 may rotate about the axis of through-hole 1001. The mounting portion 11 and the through hole 1001 can be in tight fit, so that the fixing effect between the mounting portion 11 and the through hole 1001 can be maintained, and the mounting portion 11 can rotate around the axis of the through hole 1001. The mounting portion 11 rotates about a predetermined axis, and its position in the axial direction is constant. Alternatively, the axial position of the mounting portion 11 may vary during adjustment of the mounting portion, and after adjustment is complete, the axial position of the mounting portion 11 remains unchanged relative to that prior to adjustment. Thereby, the adjustment controllability of the first coupling member 10 during the rotation can be achieved.

In providing the coupling part 12 of the first coupling member 10, referring to fig. 3 and 10, the coupling part 12 is substantially U-shaped plate, rectangular plate, square plate, rectangular column, irregular plate, irregular column, etc., as long as the coupling strength can be adjusted by changing the distance and/or relative area between the coupling part 12 and the resonance rod 400 by rotating the first coupling member 10. In the embodiment shown in fig. 3 and 9, the coupling portion 12 is substantially U-shaped, and since the mounting portion 11 has the connection hole 111 through which the screw member 21 passes, the coupling portion 12 is not a complete U-shaped. When the coupling part 12 is provided in other shapes, the coupling part 12 is not a complete figure.

There are various implementations of the mounting portion 11 and the coupling portion 12. The coupling portion 12 may be a metal piece; alternatively, the coupling portion 12 may include an insulating member and a metal layer coated on a surface of the insulating member. The coupling portion 12 can effectively exert a coupling action. The insulating member may be made of plastic, plastics, etc.

Referring to fig. 3 and 10, the mounting portion 11 and the coupling portion 12 may be an integral structure, which can improve the connection strength between the two. When the mounting portion 11 and the coupling portion 12 are both made of metal members, they can be made by integral molding. When the mounting portion 11 is an insulating member and the coupling portion 12 is a metal member, the mounting portion 11 and the coupling portion 12 may be manufactured by insert injection molding or the like.

Referring to fig. 11 and 12, the mounting portion 11 and the coupling portion 12 may be an assembly structure, wherein the mounting portion 11 may be a metal member or an insulating member. The mounting portion 11 and the coupling portion 12 can be connected by clamping, screwing, welding, bonding, etc.

When the mounting part 11 and the coupling part 12 are in clamping fit, the buckle 112 is arranged on one structure, the mounting hole 121 is arranged on the other structure, and the mounting part 11 and the coupling part 12 can be fixed by matching the buckle 112 and the mounting hole 121.

In some embodiments, the coupling portion 12 has a mounting hole 121 and the mounting portion 11 has a catch 112, the catch 112 being capable of passing through the mounting hole 121 and snap-fitting with the coupling portion 12. The coupling portion 12 can be easily and reliably attached to the mounting portion 11. The mounting portion 11 can be provided with a plurality of buckles 112, the plurality of buckles 112 are clamped in the mounting holes 121, and the connection between the mounting portion 11 and the coupling portion 12 is more stable.

In some embodiments, the latch 112 includes a resilient arm 1121 and a protrusion 1122 attached to the resilient arm 1121, the protrusion 1122 having a guide surface 1122a; in the process of the elastic arm 1121 penetrating the mounting hole 121, the guide surface 1122a is in abutting engagement with the wall surface of the mounting hole 121 to cause the elastic arm 1121 to flex and retract.

During assembly, during the process of installing the buckle 112 into the installation hole 121, the guide surface 1122a of the projection 1122 abuts against the wall surface of the installation hole 121 to bend and retract the elastic arm 1121, so that the buckle 112 is conveniently installed into the installation hole 121, and the assembly efficiency is improved. After the elastic arm 1121 is elastically restored, the protrusion 1122 of the latch 112 and the coupling portion 12 are snap-fitted, the structure is easy to assemble, and the mounting portion 11 and the coupling portion 12 are stably connected. The guide surface 1122a may be a sloped surface.

Illustratively, the mounting portion 11 has a plurality of circumferentially distributed catches 112, each catch 112 includes an elastic arm 1121 and a protrusion 1122 connected to the elastic arm 1121, and the protrusion 1122 is disposed on a side of the elastic arm 1121 opposite to the axis of the connection hole 111, i.e., the protrusion 1122 is disposed on an outer side of the elastic arm 1121. The screw member 21 may pass through the vacant spaces between the plurality of catches 112 to protrude outside the mounting portion 11.

When the screw member 21 of the second coupling member 20 is provided, the screw member 21 can pass through the connection hole 111 of the mounting portion 11 and is in threaded connection with the connection hole 111, so that the length of the portion, which penetrates out of the mounting portion 11, of the screw member 21 can be adjusted, that is, the depth of the screw member 21 entering the cavity 200 is changed, and the change of the relative area between the second coupling member 20 and the resonant rod 400 is realized to realize the adjustment of the coupling strength.

There are various implementations of making the screw member 21. The screw member 21 may be a metal member; alternatively, the screw member 21 may include an insulating member and a metal layer coated on a surface of the insulating member. The screw members 21 can effectively exert a coupling action. The insulating member may be made of plastic, plastics, etc.

In order to stabilize the position of the mounting portion 11 relative to the predetermined component, in some embodiments, referring to fig. 9 and 10, the first coupling member 10 further includes a fixing portion 14 connected to the mounting portion 11, and the fixing portion 14 is used for limiting the mounting portion 11 on the predetermined component. The fixing portion 14 is engaged with the predetermined member to restrain the mounting portion 11 to the predetermined member, thereby maintaining the coupling portion 12 connected to the mounting portion 11 at a predetermined position.

The fixing portion 14 and the mounting portion 11 may be integrally or integrally formed. For example, the fixing portion 14 may be a flange structure integrally provided on the mounting portion 11, and the flange structure abuts against the outer side of the predetermined member to define the position of the mounting portion 11. Alternatively, the fixing portion 14 may be a rubber ring sleeved outside the mounting portion 11, and the rubber ring abuts against the outer side of the predetermined member to define the position of the mounting portion 11. Alternatively, the fixing portion 14 may be a snap provided on the mounting portion 11, and the snap is snapped on a predetermined member to define the position of the mounting portion 11.

In some embodiments, referring to fig. 9 and 10, a limiting portion 13 is disposed at an end of the mounting portion 11 away from the coupling portion 12, and the fixing portion 14 is detachably connected to the limiting portion 13. Referring to fig. 3, when the stopper portion 13 and the fixing portion 14 are connected, the fixing portion 14 is configured to abut against a predetermined member to stop the mounting portion 11 against the predetermined member.

During assembly, the mounting portion 11 is first assembled to the through hole 1001 of the predetermined component, the limiting portion 13 completely protrudes out of the predetermined component, the fixing portion 14 is connected to the limiting portion 13 in a matching manner, and after the two are fixed, the position of the mounting portion 11 relative to the predetermined component is adaptively adjusted, for example, the fixing portion 14 can be abutted against the predetermined component by pressing, so as to determine and fix the position of the mounting portion 11 relative to the predetermined component in the axial direction of the through hole 1001. Thereby maintaining the coupling part 12 coupled to the mounting part 11 at a predetermined position and maintaining a stable relative position between the coupling part 12 and the resonant rod 400 at the adjusted position.

When the detachable connection between the limiting part 13 and the fixing part 14 is realized, the limiting part 13 and the fixing part 14 can be connected in a plugging mode, a clamping mode, a threaded connection mode, a knurling crimping mode and the like. The spacing part 13 and the fixing part 14 are matched to limit the fixing part 14 on the spacing part 13, and the spacing part 13 and the fixing part are reliably connected.

For example, referring to fig. 3, 9 and 10, the limiting portion 13 is a threaded portion 13a, the fixing portion 14 is a nut member 14a, and the nut member 14a is screwed to the threaded portion 13a at a position close to the coupling portion 12 (at the lower end of the threaded portion 13a in fig. 3). The connecting position of the unthreaded area of the mounting portion 11 and the threaded section 13a has the effect of limiting and stopping the position of the nut member 14a, so that the threaded section 13a and the nut member 14a are reliably connected. When the nut member 14a is abutted against the outer side surface 1002 of the predetermined member, the mounting portion 11 can be effectively stopped in the axial direction of the through hole 1001.

For example, referring to fig. 13, the limiting portion 13 is a ring groove 13b formed on the mounting portion 11, the fixing portion 14 is a snap spring 14b, and the snap spring 14b is snapped on the ring groove 13 b. The snap spring 14b and the annular groove 13b are matched to play a role in limiting and stopping the snap spring 14b, and the snap spring 14b is reliably connected with the annular groove 13 b. When the snap spring 14b abuts against the outer side 1002 of the predetermined component, the mounting portion 11 can be effectively limited in the axial direction of the through hole 1001.

In order to further stabilize the position of the mounting portion 11 relative to the predetermined component, in some embodiments, referring to fig. 3, 9 and 10, the mounting portion 11 is provided with a fixing structure 113, and the fixing structure 113 is configured to abut against an inner side surface 1003 of the predetermined component.

The fixing structure 113 can stabilize the position of the mounting portion 11 in the axial direction of the through hole 1001 on both the inner side and the outer side of the predetermined component together with the fixing portion 14, so that the mounting portion 11 is more stable and reliable in the rotating process, and the adjusting effect of the first coupling member 10 is more stable and controllable. The fixing structure 113 may be integrally formed or assembled on the mounting portion 11. The securing structure 113 may be a ring-shaped, arc-shaped, or other shaped raised structure.

When the mounting portion 11 is provided with both the fixing structure 113 and the fixing portion 14, the first coupling member 10 can be mounted on a predetermined part only by integrally forming one of the fixing structure 113 and the fixing portion 14 on the mounting portion 11, but not by integrally forming both of them on the mounting portion 11.

For example, referring to fig. 3, the fixing structure 113 is integrally formed on the mounting portion 11, the fixing portion 14 and the mounting portion 11 are assembled structures, the coupling portion 12 and the mounting portion 11 are integrally formed or assembled structures, and the process of assembling the first coupling member 10 is as follows: firstly, the mounting part 11 is mounted into the through hole 1001 of the cover plate 300 from bottom to top, and the mounting part 11 is limited on the cover plate 300 by the fixing structure 113; the fixing portion 14 is then mounted on the mounting portion 11, and the fixing portion 14 restricts the mounting portion 11 to the cover plate 300.

For example, the fixing structure 113 is assembled on the mounting portion 11, the fixing portion 14 and the mounting portion 11 are assembled structures, and the coupling portion 12 and the mounting portion 11 are assembled structures, the mounting portion 11 may be assembled into the through hole 1001 of the cover plate 300 from bottom to top or from top to bottom during the process of assembling the first coupling element 10, and then the fixing structure 113 and the fixing portion 14 are assembled on the mounting portion 11 to limit the mounting portion 11 on the cover plate 300, and the coupling portion 12 is assembled on the mounting portion 11.

In order to stabilize the position of the second coupling member 20 relative to the predetermined component, in some embodiments, referring to fig. 3, 9 and 10, the second end 21b of the screw member 21 is provided with a locking member 22, and the locking member 22 is used for limiting the screw member 21 on the first coupling member 10. When the first coupling member 10 is restrained on the predetermined part, the locking member 22 is provided at the second end 21b of the screw member 21, so that the screw member 21 can be restrained on the first coupling member 10, and the second coupling member 20 can be reliably and stably restrained on the predetermined part, so that the screw member 21 and the resonance rod 400 which are adjusted in position can maintain stable relative positions.

The locking member 22 is illustratively a nut member 22a, the nut member 22a is screwed onto the screw member 21, and the screw member 21 is stably retained on the mounting portion 11 by screwing the nut member 22a so that one end surface of the nut member 22a abuts against the mounting portion 11.

Exemplarily, retaining member 22 is the jump ring (not shown), and the jump ring card is established on screw member 21, makes jump ring 14b one end support locate the installation department 11 on, just can be spacing screw member 21 on installation department 11 steadily.

In some embodiments, referring to fig. 9 and 10, the second end 21b of the screw member 21 is provided with an adjusting slot 211 for cooperating with an external tool to rotate the screw member 21. The user rotates the screw member 21 by an external tool to change the length of the screw member 21 protruding out of the mounting portion 11. The adjusting groove 211 can be a hexagon socket, a straight line, a cross, a double offset ring, etc., and an external tool such as a screwdriver, a hexagon socket wrench, etc. can be inserted into the adjusting groove 211 to drive the screw member 21 to rotate.

Referring to fig. 1 to fig. 3, the present application provides a communication device, which includes the above-mentioned filter 1000, and the filter 1000 is used for selecting a communication signal and filtering out noise or interference signals outside the frequency of the communication signal. The communication device may be a multiplexer, a duplexer, a multiplexer, a combiner, an antenna, a base station, etc.

Under the same size of the filter 1000, compared with a filter using a conventional coupling rod, the filter 1000 using the coupling adjustment assembly 100 of the present application has an overall size that is substantially unchanged after the first coupling element 10 and the second coupling element 20 are configured, and the adjustment ranges of the coupling strength between the two resonant rods 400 by the first coupling element 10 and the second coupling element 20 can be overlapped, so that the adjustment range of the coupling strength between the two resonant rods 400 is larger, and the miniaturization requirement of the filter 1000 is better satisfied.

Illustratively, the communication device is a duplexer, the duplexer includes a transmit channel filter 1000 and a receive channel filter 1000, and the transmit channel filter 1000 and the receive channel filter 1000 use the above-mentioned filter 1000 for filtering. The transmit path filter 1000 is used for processing a transmit signal of a transmitter, and the receive path filter 1000 is used for processing a receive signal of a receiver.

Illustratively, the communication device is a multiplexer, the multiplexer includes a plurality of transmit channel filters 1000 and a plurality of receive channel filters 1000, and the transmit channel filters 1000 and the receive channel filters 1000 use the above filters 1000 for filtering. The transmit path filter 1000 is used for processing a transmit signal of a transmitter, and the receive path filter 1000 is used for processing a receive signal of a receiver.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (13)

1. A coupling adjustment assembly, comprising: a first coupling and a second coupling;

the first coupling piece comprises a mounting part and a coupling part, the mounting part is rotatably mounted on a preset part and is provided with a connecting hole, and the coupling part is connected to the mounting part and can rotate along with the mounting part;

the second coupling piece comprises a screw rod piece, the screw rod piece is in threaded fit with the inner wall of the connecting hole, the screw rod piece is provided with a first end and a second end which are arranged oppositely, and the first end penetrates out of the connecting hole and is arranged adjacent to the coupling portion.

2. The coupling adjustment assembly of claim 1, wherein the first coupling further comprises a securing portion connected to the mounting portion, the securing portion configured to retain the mounting portion on the predetermined component.

3. The coupling adjustment assembly of claim 2, wherein a limiting portion is disposed at an end of the mounting portion away from the coupling portion, and the fixing portion is detachably connected to the limiting portion;

when the limiting part is connected with the fixing part, the fixing part is used for being abutted against the preset component to limit the mounting part on the preset component.

4. The coupling adjustment assembly of claim 3, wherein the stop portion and the securing portion are engaged, snapped, threaded, or knurled.

5. The coupling adjustment assembly of claim 3, wherein the stop portion is a threaded section and the securing portion is a nut member that is threaded onto the threaded section at a location adjacent the coupling portion;

or, spacing portion is for locating annular on the installation department, the fixed part is the jump ring, the jump ring joint is in on the annular.

6. The coupling adjustment assembly of any one of claims 1 to 5, wherein the mounting portion is provided with a securing formation for abutting an inner side surface of the predetermined component.

7. The coupling adjustment assembly of any one of claims 1 to 5, wherein the coupling portion has a mounting hole and the mounting portion has a snap that can pass through the mounting hole and snap-fit with the coupling portion.

8. The coupling adjustment assembly of claim 7, wherein the catch comprises a resilient arm and a boss connected to the resilient arm, the boss having a guide surface;

in the process that the elastic arm penetrates through the mounting hole, the guide surface is in butt fit with the wall surface of the mounting hole so that the elastic arm bends and retracts.

9. A coupling adjustment assembly according to any of claims 1 to 5, wherein the second end of the screw member is provided with a locking member for retaining the screw member on the first coupling member.

10. The coupling adjustment assembly of any one of claims 1 to 5, wherein the second end of the screw member is provided with an adjustment slot for engagement with an external tool to rotate the screw member.

11. The coupling adjustment assembly of any one of claims 1 to 5, wherein the mounting portion and the coupling portion are of unitary construction;

or, the mounting part and the coupling part are assembly structures.

12. A filter, comprising: a cavity, a cover plate, a plurality of resonant rods and at least one coupling adjustment assembly as claimed in any one of claims 1 to 11, wherein the cover plate covers the cavity, and the plurality of resonant rods are located in the cavity and connected to the cavity or the cover plate; the cover plate or the cavity is provided with a through hole, and the mounting part is rotatably mounted at the through hole.

13. The filter according to claim 12, wherein the mounting portion and the through hole have an interference fit therebetween.

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