Coupling regulators, filters, and communication equipment

Abstract

The present application relates to the field of radio frequency devices, and provides a coupling adjustment component, a filter, and a communication device. The coupling adjustment component includes a fixing part and a coupling part, the fixing part is installed in the first hole, and a second hole extending along its axial direction is opened at one end of the fixing part, and the coupling part is inserted into the second hole, so that the fixing part is deformed outward and pressed against the first hole. When assembling the coupling adjustment component, the fixing part can be first inserted into the first hole, and then the coupling part can be inserted into the second hole and a radial outward expansion force is applied to the fixing part, so that the fixing part is adaptively expanded and deformed under the action of the expansion force and pressed against the first hole. At this point, the coupling adjustment component can be stably installed in the first hole, and the position of the coupling adjustment component relative to the first hole can be stabilized, thereby simplifying and facilitating the assembly operation of the coupling adjustment component, ensuring and improving the assembly convenience and assembly efficiency of the coupling adjustment component, and improving the installation and fixation reliability of the coupling adjustment component.

Description

Technical Field

[0001] The present application belongs to the technical field of radio frequency devices, and in particular relates to a coupling adjustment component, a filter, and a communication device. Background Art

[0002] A filter is a radio frequency device that can be used to select communication signals and filter out clutter or interference signals. Existing filter coupling adjustment assemblies employ one method: threading an adjustment screw into a threaded hole in a cover plate, and then threading a nut into the adjustment screw to lock the adjustment screw to the cover plate. This approach is relatively inconvenient to assemble the adjustment screw, cover plate, and nut, resulting in relatively low assembly efficiency. Another approach employs a position-limited mounting method to secure the coupling adjustment assembly to the cover plate. However, this approach offers poor radial and axial securing properties and can easily cause the coupling adjustment assembly to loosen or even fall off the cover plate due to repeated adjustments. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a coupling adjustment assembly to solve the problems of relatively poor assembly convenience and relatively low assembly efficiency of existing coupling adjustment assemblies, as well as poor installation and fixation reliability of the coupling adjustment assembly and the filter housing.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in this application is: a coupling adjustment component, including a fixing part and a coupling part, the fixing part is installed to the first hole, and a second hole extending along its axial direction is opened at one end of the fixing part, and the coupling part is inserted into the second hole, so that the fixing part is deformed outward and pressed tightly against the first hole.

[0005] In one embodiment, the second hole is a through hole that passes through the fixing member along the axial direction of the fixing member, and the fixing member includes a fixing column and a fixing ring connected to one end of the fixing column and extending outward relative to the fixing column, and the fixing ring is used to stop at the edge of the first hole. A truncation groove extending along its axial direction and passing through it radially is provided on the side of the fixing column away from the fixing ring.

[0006] In one embodiment, a plurality of the truncation grooves are provided, and the plurality of the truncation grooves are staggered and distributed along the circumference of the fixing column.

[0007] In one embodiment, an extension length of the truncation groove along the axial direction of the fixing post is smaller than an axial length of the fixing post.

[0008] In one embodiment, the second hole is a polygonal hole, and the truncation groove is provided corresponding to the corners of the polygonal hole.

[0009] In one embodiment, one end of the fixing post facing away from the fixing ring protrudes from an opening of the first hole.

[0010] In one embodiment, the coupling member protrudes from an end of the fixing column facing away from the fixing ring.

[0011] In one embodiment, a protrusion is provided on the wall of the second hole, and the cross-sectional size of the protrusion is gradually reduced in a direction away from the wall of the second hole.

[0012] In one embodiment, a plurality of protrusions are provided, and the plurality of protrusions are located on the same cross section of the second hole.

[0013] In one embodiment, the coupling member includes a connecting rod inserted into the second hole, and a coupling structure connected to one end of the connecting rod, the cross-sectional shape of the connecting rod is the same as the cross-sectional shape of the second hole, and the second hole is a non-circular hole.

[0014] In one embodiment, the connecting rod includes a first section, a second section, and a third section connected in sequence along a direction approaching the coupling structure, the cross-sectional size of the third section is larger than the cross-sectional size of the first section, and the cross-sectional size of the second section is set to increase in a direction approaching the third section.

[0015] The embodiment of the present application also aims to provide a filter, comprising a cavity, a cover plate covering the cavity, a resonant rod disposed in the cavity, and at least one coupling adjustment component;

[0016] The resonant rod is mounted on the cavity, and the cover plate is provided with the first hole for mounting the coupling adjustment component; or, the resonant rod is mounted on the cover plate, and the cavity is provided with the first hole for mounting the coupling adjustment component.

[0017] In one embodiment, the coupling adjustment component is disposed between two adjacent resonant rods and is used to adjust the coupling strength between the two adjacent resonant rods.

[0018] In one embodiment, the cavity has a coupling window, and the coupling adjustment component is disposed in the coupling window and is used to adjust passband out-of-band suppression.

[0019] An embodiment of the present application further aims to provide a communication device comprising the filter.

[0020] The beneficial effects provided by this application are:

[0021] The coupling adjustment assembly provided in the embodiment of the present application can, during assembly, first pass the fixing part through the first hole of the filter housing, and then press the coupling part into the second hole of the fixing part. At this time, the coupling part will be inserted into the second hole and apply a radial outward expansion force to the fixing part, and the fixing part can adaptively expand and deform under the action of the expansion force and press against the first hole. At this point, the coupling adjustment assembly can be stably installed in the first hole of the filter housing, and the positions of the fixing part and the coupling part relative to the first hole can be stabilized, thereby effectively simplifying and facilitating the assembly operation of the coupling adjustment assembly, effectively ensuring and improving the assembly convenience and efficiency of the coupling adjustment assembly, and effectively improving the installation and fixation reliability of the coupling adjustment assembly and the filter housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 A three-dimensional schematic diagram of the coupling adjustment assembly provided in Example 1 of the present application;

[0024] Figure 2 for Figure 1 A three-dimensional schematic diagram of the provided fixing member;

[0025] Figure 3 for Figure 1 A schematic perspective view of the coupling member is provided;

[0026] Figure 4 A three-dimensional schematic diagram of the filter provided in Example 1 of the present application;

[0027] Figure 5 for Figure 4 A cross-sectional view of the provided filter;

[0028] Figure 6 This is a schematic diagram of the structure of the filter provided in Example 3 of the present application.

[0029] Among them, the reference numerals in the figures are:

[0030] 10-coupling adjustment assembly, 11-fixing piece, 111-second hole, 1111-protrusion, 112-fixing column, 1121-truncated groove, 113-fixing ring, 12-coupling piece, 121-connecting rod, 1211-first section, 1212-second section, 1213-third section, 122-coupling structure, 13-coupling rod, 14-flying rod; 20-cavity, 21-resonance cavity, 22-coupling window; 30-cover plate, 31-first hole; 40-resonance rod, 41-resonance disk, 42-flanging. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this 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 only used to explain this application and are not intended to limit this application.

[0032] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0034] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0035] A filter is a radio frequency device that can be used to select communication signals and filter out clutter or interference signals. Existing filter coupling adjustment assemblies employ one method: threading an adjustment screw into a threaded hole in a cover plate, and then threading a nut into the adjustment screw to lock the adjustment screw to the cover plate. This approach is relatively inconvenient to assemble the adjustment screw, cover plate, and nut, resulting in relatively low assembly efficiency. Another approach employs a position-limited mounting method to secure the coupling adjustment assembly to the cover plate. However, this approach offers poor radial and axial securing properties and can easily cause the coupling adjustment assembly to loosen or even fall off the cover plate due to repeated adjustments.

[0036] Therefore, the embodiment of the present application provides a coupling adjustment assembly that can solve the problems of relatively poor assembly convenience, relatively low assembly efficiency, and poor installation and fixation reliability of the coupling adjustment assembly and the filter housing in existing coupling adjustment assemblies.

[0037] The following describes the specific implementation of this application in more detail with reference to specific embodiments:

[0038] Example 1

[0039] See also Figure 1 、 Figure 2 、 Figure 5 The present invention provides a coupling adjustment assembly 10, comprising a fixing member 11 and a coupling member 12. The fixing member 11 is mounted in a first hole 31. A second hole 111 extending axially thereof is defined at one end of the fixing member 11, adjacent to the coupling member 12. The coupling member 12 is inserted into the second hole 111, causing the fixing member 11 to deform outward and abut against the first hole 31. The first hole 31 is formed on the filter housing and is used to mount the coupling adjustment assembly 10.

[0040] During assembly of the coupling adjustment assembly 10 provided in the embodiment of the present application, the fixing member 11 can be first inserted into the first hole 31 of the filter housing, and the coupling member 12 can be pressed and inserted into the second hole 111 of the fixing member 11. At this time, the coupling member 12 will be inserted into the second hole 111 and exert a radially outward expansion force on the fixing member 11. Under the action of the expansion force, the fixing member 11 can adaptively expand and deform and abut against the first hole 31. At this point, the coupling adjustment assembly 10 can be stably installed in the first hole 31 of the filter housing, and the positions of the fixing member 11 and the coupling member 12 relative to the first hole 31 can be stabilized, thereby effectively simplifying and facilitating the assembly operation of the coupling adjustment assembly 10, effectively ensuring and improving the assembly convenience and efficiency of the coupling adjustment assembly 10, and effectively improving the installation and fixing reliability of the coupling adjustment assembly 10 and the filter housing. The fixing member 11 is an insulating member such as a plastic member, a plastic member, or a rubber member. Of course, a metal member can also be selected according to the actual performance requirements of the filter, and this application is not limited to this. The fixing member 11 can be deformed and pressed against the first hole 31 under the action of the expansion force during the insertion of the coupling member 12, which can ensure that the fixing member 11 can form a stable and reliable support effect for the coupling member 12 on the basis of being inserted and pressed against the coupling member 12; further, when the fixing member 11 is rotatably installed in the first hole 31, it can be ensured that the fixing member 11 can still rotate relative to the first hole 31 under the action of external force while pressing against the first hole 31 and driving the coupling member 12 to rotate synchronously.

[0041] It is understandable that there are many ways to implement the coupling 12 plugging into the second hole 111 and causing the fixing 11 to expand and deform outward. For example, an elastic corrugated structure may be provided on the plug-in portion of the coupling 12, or the plug-in portion of the coupling 12 itself may be an elastic corrugated structure, and during the plug-in process, the elastic corrugated structure pushes against the hole wall of the second hole 111, thereby causing the fixing 11 to expand and deform outward; a protrusion may be provided on the outer wall of the coupling 12 and / or the hole wall of the second hole 111, and during the plug-in process, due to the presence of the protrusion, the coupling 12 will exert an outward force on the radial direction of the second hole 111, thereby causing the fixing 11 to expand and deform outward. Outward expansion and deformation; it can also be that the cross-sectional area of ​​the plug-in portion of the coupling 12 is larger than the cross-sectional area of ​​the second hole 111, so that during the plug-in process, the coupling 12 and the hole wall of the second hole 111 of the fixing member 11 are squeezed against each other, thereby causing the fixing member 11 to expand and deform outward; it can also be that the plug-in portion of the coupling 12 has a driving component that can apply radial force to the second hole 111, and during the plug-in process of the coupling 12, the driving component is operated to apply an expansion force to the hole wall of the second hole 111, thereby causing the fixing member 11 to expand and deform outward. In summary, the coupling 12 mentioned in this application is plugged into the second hole 111 to cause the fixing member 11 to expand and deform outward, which itself has countless ways to be realized. No matter which implementation method is adopted, as long as the fixing member 11 can achieve the effect of outward expansion and deformation when the coupling 12 is plugged into the second hole 111, this application does not make a sole limitation on this.

[0042] The coupling member 12 is a metal member; or the coupling member 12 is an insulating member, but a portion or all of the outer surface of the coupling member 12 is covered with a metal layer. This configuration can ensure that the coupling member 12 can play an effective coupling role.

[0043] The second hole 111 can be a blind hole or a through hole formed on the end surface of the fixing member 11 near the coupling member 12 and extending along the axial direction of the fixing member 11. When the second hole 111 is a through hole extending through the fixing member 11 along the axial direction, the fixing member 11 can deform more quickly and easily under the action of the expansion force during the insertion of the coupling member 12.

[0044] The coupling adjustment component 10 provided in the embodiment of the present application can be applied to filters, specifically to enhance coupling strength, adjust coupling strength, or debug passband out-of-band suppression, and has good performance and wide applicability. Specifically, Figure 5As shown, in one application of the coupling adjustment component 10, the coupling adjustment component 10 can be correspondingly set between two adjacent resonant rods 40 to serve as a coupling rod 13. The coupling rod 13 can be used to strengthen the coupling strength between the two adjacent resonant rods 40. When the fixing member 11 is rotatably installed in the first hole 31, the coupling adjustment component 10 can be rotated to change the coupling area between the coupling member 12 and the two resonant rods 40, thereby adjusting the coupling strength between the two adjacent resonant rods 40. Figure 6 As shown, in another application mode of the coupling adjustment component 10, the coupling adjustment component 10 can be correspondingly arranged at the coupling window 22 to serve as a flying rod 14, so that cross coupling is formed between the two resonant rods 40 arranged on both sides of the coupling window 22 to generate a transmission zero point; when the fixing member 11 is rotatably installed in the first hole 31, the coupling adjustment component 10 can be rotated to change the coupling area between the coupling member 12 and the two resonant rods 40 on both sides of the coupling window 22, thereby realizing the debugging of the passband out-of-band suppression and the adjustment of the transmission zero point of the filter channel.

[0045] Moreover, in accordance with the structural setting of the coupling adjustment component 10, the first hole 31 needs to be correspondingly set as a through hole or a light hole, without the need to tap an internal thread as in the prior art. Based on this, compared with the prior art, the processing difficulty and precision requirements of the filter housing with the first hole 31 can be simplified, thereby effectively reducing the processing cost of the filter housing and effectively improving the processing efficiency of the filter housing; when the fixing part 11 is rotatably installed in the first hole 31, the fixing part 11 and the first hole 31 can be in smooth contact. In this way, when the fixing part 11 rotates in the first hole 31, the risk of mutual scratching between the fixing part 11 and the first hole 31 and generating burrs, debris and other impurities can be effectively reduced, thereby effectively ensuring and improving the intermodulation and power performance of the filter using the coupling adjustment component 10.

[0046] See also Figure 1 、 Figure 2 、 Figure 5 In this embodiment, the second hole 111 is a through hole that passes through the fixing member 11 along the axial direction of the fixing member 11. The fixing member 11 includes a fixing column 112 and a fixing ring 113 connected to one end of the fixing column 112 and extending outward relative to the fixing column 112. The fixing ring 113 is used to stop at the edge of the first hole 31. The side of the fixing column 112 facing away from the fixing ring 113 is provided with a truncation groove 1121 extending along its axial direction and passing through it radially.

[0047] Specifically, when assembling the coupling adjustment assembly 10 to the first hole 31, the fixing column 112 of the fixing member 11 can be first passed through the first hole 31 until the fixing ring 113 of the fixing member 11 is positioned and stopped at the edge of the first hole 31. At this time, based on the stop cooperation between the fixing ring 113 and the edge of the first hole 31, the installation position of the fixing member 11 relative to the first hole 31 can be preliminarily positioned; then, the coupling member 12 can be pressed and inserted into the second hole 111 of the fixing member 11, so that the coupling member 12 is plugged into the second hole 111 and a radially outward expansion force is applied to the fixing member 11. At this time, Since the truncation groove 1121 pre-interrupts the complete continuity of the fixing column 112 in the circumferential direction and provides partial deformation space for the fixing column 112, the resistance of the fixing column 112 during outward expansion and deformation is greatly reduced, so that the fixing column 112 can quickly and adaptively expand and deform under the action of the expansion force and reliably press against the first hole 31. At this point, the coupling adjustment assembly 10 can finally be stably installed in the first hole 31, and the installation positions of the fixing member 11 and the coupling member 12 relative to the first hole 31 can be stabilized, which can improve the installation and fixation reliability of the fixing member 11 and the coupling member 12 and the first hole 31.

[0048] Therefore, by adopting the above scheme, when the coupling adjustment assembly 10 is assembled to the first hole 31, the stop cooperation between the fixing ring 113 and the hole edge of the first hole 31 can be used to ensure and improve the axial position accuracy of the coupling adjustment assembly 10, especially the fixing part 11, relative to the first hole 31; the truncation groove 1121 can also be used to cut off the complete continuity of the fixing column 112 in the circumferential direction and provide partial deformation space for the fixing column 112 to reduce the resistance of the fixing column 112 during outward expansion deformation, so that the fixing column 112 can quickly and adaptively expand and deform under the action of the expansion force and reliably press against the first hole 31, thereby ensuring and improving the assembly convenience and assembly efficiency of the coupling adjustment assembly 10, and effectively improving the installation and fixation reliability of the coupling adjustment assembly 10 and the filter housing.

[0049] In addition, when the fixing member 11 is rotatably installed in the first hole 31, the fixing column 112 can be cylindrical. At this time, the fixing member 11 drives the coupling member 12 to rotate relative to the first hole 31 under the action of external force, and the outer peripheral surface of the fixing column 112 is rotated and guided with the hole wall of the first hole 31, and the fixing ring 113 is rotated and abutted with the plate surface of the filter housing toward the side of the fixing column 112, thereby effectively ensuring and improving the rotational stability of the coupling adjustment assembly 10 when rotating relative to the first hole 31; similarly, when the function of the coupling member 12 is only to strengthen the coupling or generate a zero point without the need for rotation adjustment, accordingly, the fixing member 11 can be a non-cylindrical body, and the first hole 31 can be a non-circular hole. The first hole 31 and the fixing member 11 only play a fixing role without the need for relative rotation.

[0050] See also Figure 1 and Figure 2 In this embodiment, a plurality of truncation grooves 1121 are provided, and the plurality of truncation grooves 1121 are staggeredly distributed along the circumference of the fixing column 112 .

[0051] By adopting the above-mentioned scheme, the fixing column 112 can be divided into multiple lobes along the circumferential direction through multiple truncation grooves 1121 distributed in a circumferentially staggered manner along the fixing column 112. Based on this, the lobes of the fixing column 112 can be quickly and adaptively expanded and deformed under the action of the expansion force and reliably pressed against the first hole 31 respectively, thereby further reducing the resistance of the fixing column 112 during outward expansion and deformation, and further improving the assembly convenience and efficiency of the coupling adjustment component 10.

[0052] See also Figure 1 、 Figure 2 、 Figure 3 In this embodiment, the coupling member 12 includes a connecting rod 121 inserted into the second hole 111. The cross-sectional shape of the connecting rod 121 is the same as the cross-sectional shape of the second hole 111. The second hole 111 is a non-circular hole, for example, the second hole 111 can be a polygonal hole.

[0053] By adopting the above scheme, it is possible to ensure that the coupling member 12 can be positioned and limitedly matched with the second hole 111 in the cross section when inserted into the second hole 111, and to ensure that the coupling member 12 and the fixing member 11 do not rotate relative to each other in the circumferential direction, thereby improving the installation and fixing reliability between the coupling adjustment assembly 10 and the filter housing; when the fixing member 11 is rotatably installed in the first hole 31, it is possible to ensure that the coupling member 12 can reliably rotate synchronously with the fixing member 11 when the fixing member 11 rotates in the first hole 31, and does not deflect relative to the fixing member 11, thereby helping to ensure and improve the rotation controllability and adjustment controllability of the coupling adjustment assembly 10; and, when the coupling member 12 as a whole is not columnar, for example, when the coupling member 12 as a whole is sheet-shaped, the design of the second hole 111 as a non-circular hole makes it easier to process and form the connecting rod 121 with a non-circular cross section on the coupling member 12.

[0054] Of course, in other possible implementations, when the fixing member 11 is rotatably installed in the first hole 31 , the fixing member 11 can also directly drive the coupling member 12 to rotate synchronously therewith through the plug-in and tight relationship between the second hole 111 and the coupling member 12 .

[0055] See also Figure 1 and Figure 2 In this embodiment, the second hole 111 is a polygonal hole, and the truncation groove 1121 is provided corresponding to the corner of the polygonal hole.

[0056] By adopting the above scheme, the fixing column 112 can be divided into multiple lobes by a plurality of truncation grooves 1121 respectively arranged corresponding to the corners of the polygonal hole, and each lobe corresponds to a side hole wall of the second hole 111. Based on this, when the coupling member 12 is inserted into the second hole 111, the lobes of the fixing column 112 can be quickly and adaptively expanded and deformed under the action of the expansion force applied to it by the corresponding side of the coupling member 12, and can be reliably pressed against the first hole 31 respectively, thereby further reducing the resistance of the fixing column 112 during outward expansion and deformation, further improving the assembly convenience and assembly efficiency of the coupling adjustment component 10, and further improving the installation and fixation reliability between the coupling adjustment component 10 and the filter housing.

[0057] See also Figure 1 、 Figure 2 In this embodiment, the extending length of the truncation groove 1121 along the axial direction of the fixing column 112 is smaller than the axial length of the fixing column 112 .

[0058] By adopting the above scheme, the root of the fixing column 112 connected to the fixing ring 113 can be made complete, continuous and ring-shaped. Based on this, the resistance of the fixing column 112 during outward expansion and deformation can be reduced, and the fixing column 112 can be adaptively expanded and deformed under the action of the expansion force. At the same time, the structural strength of the root of the fixing column 112 connected to the fixing ring 113 can be guaranteed and improved, and the connection strength and support strength of the fixing column 112 to the fixing ring 113 can be guaranteed and improved, thereby ensuring and extending the service life of the fixing part 11.

[0059] See also Figure 1 、 Figure 5 In this embodiment, one end of the fixing post 112 facing away from the fixing ring 113 protrudes from the opening of the first hole 31 .

[0060] By adopting the above solution, the portion of the fixing post 112 that protrudes from the opening of the first hole 31 at the end facing away from the fixing ring 113 forms a free end. The correspondingly provided truncation groove 1121 also forms a free end at the opening of the first hole 31. When the coupling member 12 is inserted into the second hole 111, the provision of the free end can relieve the stress generated by the deformation of the fixing member 11 under the action of the expansion force, effectively preventing the fixing member 11 from breaking or damaging. At the same time, the presence of the free end can also reduce the resistance encountered by the fixing post 112 during outward expansion and deformation, further improving the assembly convenience and efficiency of the coupling adjustment assembly 10. When the fixing member 11 is rotatably installed in the first hole 31, the portion of the fixing post 112 that protrudes from the first hole 31 can be grasped and force applied to drive the fixing member 11 to rotate relative to the first hole 31, thereby driving the coupling member 12 to rotate synchronously to achieve adjustment, thereby ensuring and improving the rotational controllability and adjustment controllability of the coupling adjustment assembly 10.

[0061] See also Figure 1、 Figure 5 In this embodiment, the coupling member 12 protrudes from one end of the fixing column 112 away from the fixing ring 113 .

[0062] By adopting the above solution, the tightening effect of the coupling member 12 on the second hole 111 can be further improved, and the entire inner wall of the fixing column 112 can be tightened by the coupling member 12, further improving the stable and reliable support effect of the fixing member 11 on the coupling member 12, and further improving the tightening strength between the fixing member 11 and the first hole 31, thereby improving the installation and fixation reliability of the coupling adjustment assembly 10. When the fixing member 11 is rotatably installed in the first hole 31, by grasping the portion of the coupling member 12 protruding from the fixing column 112 and applying force, the coupling member 12 can be driven to synchronously rotate the fixing member 11 relative to the first hole 31 to achieve adjustment, thereby ensuring and improving the rotational controllability and adjustment controllability of the coupling adjustment assembly 10.

[0063] See also Figure 1 、 Figure 2 、 Figure 5 In this embodiment, a protrusion 1111 is provided on the wall of the second hole 111 , and the cross-sectional size of the protrusion 1111 is gradually reduced in the direction away from the wall of the second hole 111 .

[0064] By adopting the above-mentioned scheme, the space available for the coupling part 12 to be inserted at the cross-section of the protrusion 1111 can be compressed by the protrusion 1111. Based on this, when the coupling part 12 is inserted into the protrusion 1111, the coupling part 12 can form a relatively tight or even interference fit with the fixing part 11, applying sufficient or even greater expansion force to the fixing part 11, thereby facilitating the fixing part 11 to reliably expand and deform outward under the action of the expansion force and reliably press against the first hole 31.

[0065] In addition, the setting of the protrusion 1111 is also beneficial to reducing the contact area between the corresponding side of the fixing member 11 and the coupling member 12, and is beneficial to concentrating the expansion force applied by the coupling member 12 to the corresponding side of the fixing member 11, thereby making it easier for the fixing member 11 to reliably expand and deform outward under the action of the expansion force and reliably press against the first hole 31.

[0066] Of course, in other possible embodiments, the protrusion 1111 may not be set on the hole wall of the second hole 111, but may be set on the outer peripheral side wall of the coupling member 12; or, part of the protrusion 1111 may be set on the hole wall of the second hole 111, and part of the protrusion 1111 may be set on the outer peripheral side wall of the coupling member 12; this embodiment does not limit this.

[0067] See also Figure 1 、 Figure 2 、 Figure 5In this embodiment, a plurality of protrusions 1111 are provided, and the plurality of protrusions 1111 are located on the same cross section of the second hole 111 .

[0068] By adopting the above-mentioned scheme, a space for the coupling member 12 to be plugged in and matched can be formed in the corresponding cross-section of the second hole 111 through the multiple protrusions 1111 located on the same cross-section of the second hole 111. Based on this, it is only necessary to ensure that the coupling member 12 can be relatively tightly or even interference-fitted with the multiple protrusions 1111 when plugged into the internal space enclosed by the multiple protrusions 1111, and sufficient expansion force is applied to the multiple protrusions 1111 respectively, so as to ensure that the fixing member 11 can reliably expand and deform outward under the action of the expansion force and reliably press against the first hole 31.

[0069] Among them, a protrusion 1111 is provided on each side wall of the second hole 111. Such a configuration can facilitate the expansion force applied by the coupling member 12 to the corresponding hole wall of the second hole 111 through the protrusion 1111, so that the corresponding hole wall of the second hole 111 can adaptively expand and deform outward under the action of the expansion force and reliably press against the first hole 31.

[0070] See also Figure 1 、 Figure 3 、 Figure 5 In this embodiment, the coupling member 12 includes a connecting rod 121 inserted into the second hole 111, and a coupling structure 122 connected to one end of the connecting rod 121. The connecting rod 121 and the coupling structure 122 can be connected as a whole or separately, and this embodiment does not limit this. The connecting rod 121 can be a metal part or an insulating part, and this embodiment does not limit this. The coupling structure 122 is a metal part; or, the coupling structure 122 is an insulating part, but the outer surface of the coupling structure 122 is partially or completely covered with a metal layer; such a setting can ensure that the coupling structure 122 can play an effective coupling role. By adopting the above scheme, the coupling structure 122 can be reliably supported by the connecting rod 121 inserted into the second hole 111, and the position of the coupling structure 122 relative to the first hole 31 can be stabilized.

[0071] See also Figure 1 、 Figure 3 、 Figure 5 In this embodiment, the fixing member 11 is rotatably mounted in the first hole 31, and the coupling structure 122 can be in the shape of a U-shaped sheet, a rectangular sheet, a mountain-shaped sheet, a rectangular column, an irregular sheet, or an irregular column. This approach ensures that the coupling structure 122 can effectively, reliably, and even regularly change the coupling area between the two resonant rods 40 during rotation, enabling reliable and effective adjustment.

[0072] Of course, in other possible implementations, when the coupling structure 122 functions solely to enhance coupling or generate a zero point without requiring rotational adjustment, the coupling structure 122 may have any desired shape, and this embodiment does not impose any limitations thereto. When the fixing member 11 is rotatably mounted in the first hole 31 and the coupling structure 122 is required to participate in rotational adjustment, in addition to the aforementioned shapes, the coupling structure 122 may have other shapes, as long as the relative area between the coupling structure 122 and the corresponding resonant rod 40 changes during rotation, and this is not a single limitation herein.

[0073] See also Figure 1 、 Figure 3 、 Figure 5 In this embodiment, the connecting rod 121 includes a first section 1211, a second section 1212 and a third section 1213 connected in sequence along a direction close to the coupling structure 122. The cross-sectional size of the third section 1213 is larger than the cross-sectional size of the first section 1211, and the cross-sectional size of the second section 1212 is set to increase in a direction close to the third section 1213.

[0074] By adopting the above scheme, the connecting rod 121 can be reliably plugged into the second hole 111 through the first section 1211, and the connection strength between the first section 1211 and the second section 1212 can be continuously guaranteed and improved through the second section 1212, and the connection strength between the third section 1213 and the coupling structure 122 can be strengthened through the third section 1213, thereby forming a strong support for the coupling structure 122.

[0075] See also Figure 1 、 Figure 4 、 Figure 5 An embodiment of the present application also provides a filter, including a cavity 20, a cover plate 30 covering the cavity 20, a resonant rod 40 arranged in the cavity 20, and at least one coupling adjustment component 10; the resonant rod 40 is installed in the cavity, and the cover plate 30 is provided with a first hole 31 for installing the coupling adjustment component 10.

[0076] It should be noted that the cavity 20 and the cover plate 30 constitute the housing of the filter. The cavity 20 has a resonant cavity 21, and a resonant rod 40 is disposed within the resonant cavity 21. The resonant rod 40 is connected to the cavity 20. The resonant rod 40 can be connected to the cavity 20 by welding, integral connection, riveting, crimping, screw fastening, threaded connection, or clamping, etc., which is not limited in this embodiment.

[0077] The resonant rod 40 may be a metal resonant rod 40 , a ceramic dielectric resonant rod 40 , or a dielectric resonant rod 40 made of other materials, which is not limited in this embodiment.

[0078] The resonant rod 40 may be a circular rod, a polygonal rod, a special-shaped rod or even other shapes, which is not limited in this embodiment.

[0079] The resonant rod 40 may be a hollow resonant rod 40 or a solid resonant rod 40 , which is not limited in this embodiment.

[0080] The resonant rod 40 may be provided with a resonant disk 41 or without the resonant disk 41 , and the resonant disk 41 may be provided with a flange 42 or without the flange 42 , which is not limited in this embodiment.

[0081] It should also be noted here that the cover plate 30 is arranged corresponding to the resonant rod 40, and a first hole 31 is opened on the cover plate 30, which is arranged one-to-one corresponding to the coupling adjustment component 10 and is used to install the coupling adjustment component 10. The coupling adjustment component 10 is installed in the first hole 31 and is tightly pressed against the first hole 31 to stabilize the axial position.

[0082] See also Figure 1 、 Figure 4 、 Figure 5 In this embodiment, the coupling adjustment component 10 is disposed between two adjacent resonant rods 40 and is used to adjust the coupling strength between the two adjacent resonant rods 40 .

[0083] Specifically, the coupling adjustment component 10 can be set between two adjacent resonant rods 40 to serve as a coupling rod 13, and the coupling rod 13 can be used to strengthen the coupling strength between the two adjacent resonant rods 40; when the fixing member 11 is rotatably installed in the first hole 31, the coupling adjustment component 10 can be rotated to change the coupling area between the coupling member 12 relative to the two resonant rods 40, thereby achieving the adjustment of the coupling strength between the two adjacent resonant rods 40.

[0084] See also Figure 4 The present application also provides a communication device including a filter. By employing the filter, the communication device can be miniaturized and lightweight, achieving higher performance indicators. The communication device can be a simplexer, duplexer, multiplexer, combiner, antenna, base station, or other communication device.

[0085] Example 2

[0086] The difference between this embodiment and the first embodiment is that:

[0087] Please refer to Figure 4 、 Figure 5 The embodiment of the present application also provides a filter, including a cavity 20, a cover plate 30 covering the cavity 20, a resonant rod 40 arranged in the cavity 20, and a coupling adjustment component 10; the resonant rod 40 is installed on the cover plate 30, and the cavity 20 is provided with a first hole 31 for installing the coupling adjustment component 10.

[0088] It should be noted here that the cavity 20 has a resonant cavity 21, and a resonant rod 40 is provided in the resonant cavity 21. The resonant rod 40 is connected to the cover 30, wherein the resonant rod 40 can be optionally connected to the cover 30 by welding, integral connection, riveting, crimping, screw fastening, threaded connection, clamping, etc., and this embodiment does not impose any restrictions on this.

[0089] The resonant rod 40 may be a metal resonant rod 40 , a ceramic dielectric resonant rod 40 , or a dielectric resonant rod 40 made of other materials, which is not limited in this embodiment.

[0090] The resonant rod 40 may be a circular rod, a polygonal rod, a special-shaped rod or even other shapes, which is not limited in this embodiment.

[0091] The resonant rod 40 may be a hollow resonant rod 40 or a solid resonant rod 40 , which is not limited in this embodiment.

[0092] The resonant rod 40 may be provided with a resonant disk 41 or without the resonant disk 41 , and the resonant disk 41 may be provided with a flange 42 or without the flange 42 , which is not limited in this embodiment.

[0093] It should also be noted here that when the resonant rod 40 is installed on the cover plate 30, a first hole 31 is provided on the shell opposite to the cavity 20 and the cover plate 30, which is arranged one-to-one with the coupling adjustment component 10 and is used to install the coupling adjustment component 10. The coupling adjustment component 10 is installed in the first hole 31 and is tightly pressed against the first hole 31 to stabilize the axial position.

[0094] Example 3

[0095] See also Figure 6 In this embodiment, the cavity 20 has a coupling window 22 , and the coupling adjustment component 10 is disposed in the coupling window 22 and is used to adjust the passband out-of-band suppression.

[0096] Specifically, the coupling adjustment assembly 10 can be positioned at the coupling window 22 to serve as a flying rod 14, thereby creating cross-coupling between the two resonant rods 40 disposed on either side of the coupling window 22, thereby generating a transmission zero. When the fixing member 11 is rotatably mounted in the first hole 31, the coupling adjustment assembly 10 can be rotated to change the coupling area of ​​the coupling member 12 relative to the two resonant rods 40 on either side of the coupling window 22, thereby adjusting the passband out-of-band suppression and the transmission zero of the filter channel.

[0097] When the filter is provided with multiple coupling adjustment components 10, all coupling adjustment components 10 may be used to adjust the coupling strength, all coupling adjustment components 10 may be used to adjust the passband out-of-band suppression, or some coupling adjustment components 10 may be used to adjust the coupling strength and some coupling adjustment components 10 may be used to adjust the passband out-of-band suppression. This embodiment does not impose any limitation on this.

[0098] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A coupling adjustment component, characterized in that: It includes a fixing part and a coupling part. The fixing part can be rotatably installed in the first hole. A second hole extending along its axial direction is opened at one end of the fixing part. The coupling part is inserted into the second hole, so that the fixing part is deformed outward and pressed against the first hole. The fixing part can drive the coupling part to rotate synchronously.

2. The coupling adjustment assembly according to claim 1, wherein: The second hole is a through hole that passes through the fixing member along the axial direction of the fixing member. The fixing member includes a fixing column and a fixing ring connected to one end of the fixing column and extending outward relative to the fixing column. The fixing ring is used to stop at the edge of the first hole. A truncation groove extending along its axial direction and passing through it radially is provided on the side of the fixing column away from the fixing ring.

3. The coupling adjustment assembly according to claim 2, wherein: There are a plurality of truncation grooves, and the plurality of truncation grooves are staggered and distributed along the circumference of the fixing column; And / or, an extension length of the truncation groove along the axial direction of the fixing column is smaller than the axial length of the fixing column.

4. The coupling adjustment assembly according to claim 2, wherein: The second hole is a polygonal hole, and the truncation groove is arranged corresponding to the corners of the polygonal hole.

5. The coupling adjustment assembly according to claim 2, wherein: One end of the fixing column facing away from the fixing ring protrudes from the opening of the first hole; And / or, the coupling piece protrudes from an end of the fixing column facing away from the fixing ring.

6. The coupling adjustment assembly according to claim 1, wherein: A protrusion is convexly provided on the hole wall of the second hole, and the cross-sectional size of the protrusion is gradually reduced in the direction away from the hole wall of the second hole.

7. The coupling adjustment assembly according to claim 6, wherein: There are a plurality of protrusions, and the plurality of protrusions are located on the same cross section of the second hole.

8. The coupling adjustment assembly according to any one of claims 1 to 7, characterized in that: The coupling member includes a connecting rod inserted into the second hole, and a coupling structure connected to one end of the connecting rod, the cross-sectional shape of the connecting rod is the same as the cross-sectional shape of the second hole, and the second hole is a non-circular hole; and / or, The connecting rod includes a first section, a second section and a third section connected in sequence along a direction close to the coupling structure, the cross-sectional size of the third section is larger than the cross-sectional size of the first section, and the cross-sectional size of the second section is set to increase in a direction close to the third section.

9. A filter, characterized in that: comprising a cavity, a cover plate covering the cavity, a resonant rod disposed in the cavity, and at least one coupling adjustment component according to any one of claims 1 to 8; The resonant rod is mounted on the cavity, and the cover is provided with the first hole for mounting the coupling adjustment component; or, the resonant rod is mounted on the cover, and the cavity is provided with the first hole for mounting the coupling adjustment component; The coupling adjustment component is provided between two adjacent resonant rods and is used to adjust the coupling strength between the two adjacent resonant rods; And / or, the cavity has a coupling window, and the coupling adjustment component is arranged in the coupling window and is used to debug the passband out-of-band suppression.

10. A communication device, characterized in that: Comprising the filter as claimed in claim 9.

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