Tuning structure and filter

Abstract

The utility model relates to the technical field of communication, and provides a tuning structure and a filter, the tuning structure comprises a cover plate, a driving piece, an adjusting piece and an operating piece, the cover plate comprises a fixed part and a deformation part connected with the fixed part, one side, facing the deformation part, of the driving piece abuts against the fixed part, the driving piece is provided with a penetrating hole, and the adjusting piece is arranged in the penetrating hole; the adjusting piece is provided with external threads and penetrates through the penetrating hole, and the end, close to the deformation part, of the adjusting piece is connected with the deformation part; the operating part is fixedly connected to the side, away from the deformation part, of the driving part in a split mode. As the operating piece is fixedly connected to the side, away from the deformation part, of the driving piece in a split mode, an external tool is prevented from stretching into the driving piece to make contact with the deformation part, protection on the deformation part is enhanced, the service life of the filter is prolonged, and the operating piece which is arranged in a protruding mode is also beneficial to clamping of the external tool or a human hand and facilitates tuning operation; moreover, the operating part can be independently machined and formed, and compared with the operating part and the driving part which are integrally formed, the machining cost and the manufacturing cost are greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a tuning structure and a filter. Background Art

[0002] A tuning structure in the prior art is as follows Figure 1 As shown, the tuning structure 20 includes a cover plate 21, an adjustment member 22, and a driving member 23. The cover plate 21 includes a fixed portion 211 and a deformable portion 212. The fixed portion 211 is provided with an annular groove 2111. The driving member 23 is rotatably mounted within the annular groove 2111. The driving member 23 has a connecting hole 233. The adjustment member 22 is fixed to the deformable portion 212 and passes through the connecting hole 233. The driving member 23 includes an extension portion 231 integrally formed on its plate surface to increase the contact area between the adjustment member 22 and the connecting hole 233, ensuring that the adjustment member 22 remains stable when moving in the connecting hole 233.

[0003] The driving member 23 is provided with an operating portion, and a person's hand or an external tool can rotate the driving member 23 through the operating portion to drive the adjusting member 22 to move along its axial direction, thereby moving the deforming portion 212 closer to or away from the resonator to adjust the resonant frequency.

[0004] There are two ways to set the operating part: the first is to use the ridges, grooves and other structures on the outer peripheral wall of the extension part 231 as the operating part; the second is to use the weight-reducing hole 232 on the plate surface of the driving member 23 as the operating part.

[0005] Regarding the first method, since the extension 231 is integrally formed with the plate surface of the driver 23, it is difficult to machine the operating portion (such as ridges and grooves) on the outer peripheral wall of the extension 231, which is not conducive to the processing of the operating portion. If the extension 231 and the operating portion on its outer wall are integrally formed by a mold, the cost is too high and it is rarely used in practice, which has low practicality. Moreover, even if the operating portion is machined on the outer wall of the extension 231, the thin wall thickness of the extension 231, that is, the thin wall thickness and small radial dimension of the operating portion, will result in a very small operable surface of the operating portion. This makes it difficult to tighten the operating portion with an external tool, resulting in problems such as difficulty in clamping or the operating portion falling off during operation.

[0006] For the second type, it is difficult for the clamp to rotate in coordination with the operating part (weight reduction hole 232) on the board surface, the operation is difficult, and the rotation adjustment process is difficult to maintain smoothness; in addition, when the external tool is inserted into the operating part, it is easy to touch the deformed part 212 of the cover plate 21, which is easy to affect the frequency index of the filter. Utility Model Content

[0007] In view of this, embodiments of the present application provide a tuning structure and a filter to solve the above problems.

[0008] The first aspect of the present application proposes a tuning structure, including a cover plate, a driving member, an adjusting member and an operating member, the cover plate includes a fixed portion and a deforming portion connected to the fixed portion, the driving member abuts against the fixed portion on a side facing the deforming portion, the driving member has a through hole, the adjusting member has an external thread and passes through the through hole, and the adjusting member is connected to the deforming portion at one end close to the deforming portion; the operating member is separately fixedly connected to the side of the driving member facing away from the deforming portion.

[0009] The tuning structure provided by the embodiment of the present application has the following advantages: by providing an operating member on the driving member, the operating member can be rotated by hand or an external tool to drive the driving member to rotate, thereby causing the adjusting member to drive the deformation portion to deform, thereby adjusting the resonant frequency, and the tuning operation is simple and quick. Moreover, since the operating member is separately connected to the driving member, on the one hand, the size of the operating member is not limited by the driving member, and an operating surface with a sufficient area can be provided for external tools or hands to contact, making it easy to clamp and facilitate the application of force to the operating member. At the same time, the operating member can remain stable during the force application process and is not easy to disengage. On the other hand, the operating member is separately fixedly connected to the side of the driving member away from the deformation portion, that is, the operating member is protruded from the surface of the driving member, which prevents external tools from reaching into the driving member and contacting the deformation portion, strengthens the protection of the deformation portion, and improves the life of the filter. The protruding operating member also facilitates clamping by external tools or hands, facilitating the tuning operation. On the other hand, the operating member can be independently processed and formed, and can even be a standard part currently available on the market, which is not only convenient for processing but also for mass production. Compared with the operating member and driving member formed in one piece, the processing cost and manufacturing cost are greatly reduced.

[0010] In some embodiments, the operating member has a connecting hole connected to the penetration hole, and the adjusting member passes through the penetration hole and the connecting hole in sequence.

[0011] In some embodiments, an internal thread is provided on the wall of the communicating hole, and the adjusting member is threadedly connected to the communicating hole.

[0012] In some embodiments, the through hole is a light hole.

[0013] In some embodiments, the operating member is bonded to the driving member; and / or the operating member is welded to the driving member.

[0014] In some embodiments, the fixing portion has an installation groove, the driving member is installed in the installation groove, and the tuning structure also includes a limiting member connected to the fixing portion, and the driving member abuts against the limiting member on one side along its thickness direction and abuts against the groove wall of the installation groove on the other side.

[0015] In some embodiments, the limiting member is integrally formed on the fixing portion, and an assembly groove is provided on the limiting member. The driving member includes a driving body and an installation portion provided on the outer wall surface of the driving body, and the installation portion can pass through the assembly groove and enter the installation groove.

[0016] In some embodiments, the limiting member is a clip or a block separately connected to the fixing portion.

[0017] In some embodiments, the driving member is recessed toward one side of the deformation portion to form a groove, and the groove is directly opposite to the deformation portion.

[0018] A second aspect of the present application provides a filter, which includes a cavity and the tuning structure as described in the first aspect, wherein the tuning structure is mounted on the cavity, and the cover plate covers the opening of the cavity.

[0019] The filter adopts any one or more embodiments of the above-mentioned tuning structure, and thus has the beneficial effects of the above-mentioned embodiments, which will not be described in detail here.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 conventional technical descriptions. 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.

[0022] Figure 1 It is a structural diagram of a tuning structure in the prior art;

[0023] Figure 2 is a schematic structural diagram of a tuning structure provided in some embodiments of the present application;

[0024] Figure 3 yes Figure 2 AA cross-sectional view of the tuning structure shown;

[0025] Figure 4 yes Figure 2 Exploded view of the tuning structure shown;

[0026] Figure 5 is a schematic structural diagram of a tuning structure provided in some other embodiments of the present application;

[0027] Figure 6 is a schematic structural diagram of a tuning structure provided in some further embodiments of the present application;

[0028] Figure 7 This is a schematic diagram of the structure of the filter provided in some embodiments of the present application.

[0029] The meanings of the marks in the figure are:

[0030] 100, filter;

[0031] 10. Tuning structure;

[0032] 11. Cover plate; 111. Fixing portion; 1111. Mounting groove; 112. Deformation portion;

[0033] 12. Driving member; 121. Driving body; 122. Mounting portion; 1211. Through hole; 1212. Groove;

[0034] 13. Adjustment parts;

[0035] 14. Operating member; 141. Communication hole;

[0036] 15. Limiting piece; 151. Assembly slot;

[0037] 20. Tuning structure;

[0038] 21. Cover plate; 211. Fixing portion; 2111. Annular groove; 212. Deformation portion;

[0039] 22. Adjustment parts;

[0040] 23. Driving member; 231. Extension portion; 232. Lightening hole; 233. Connecting hole;

[0041] 30. Cavity. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0044] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0045] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0047] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0048] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present 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. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0049] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0050] The embodiment of the first aspect of the present application proposes a tuning structure. Figure 2and Figure 3 The tuning structure 10 includes a cover plate 11, a driving member 12, an adjusting member 13 and an operating member 14. The cover plate 11 includes a fixed portion 111 and a deforming portion 112 connected to the fixed portion 111. The driving member 12 abuts against the fixed portion 111 on the side facing the deforming portion 112. The driving member 12 has a through hole 1211. The adjusting member 13 passes through the through hole 1211, and one end of the adjusting member 13 close to the deforming portion 112 is connected to the deforming portion 112; the operating member 14 is separately fixedly connected to the side of the driving member 12 away from the deforming portion 112.

[0051] It can be understood that the cover plate 11 can be formed as one piece, that is, the thinned area located in the middle of the cover plate 11 forms the deformation portion 112, and the unthinned area located at the edge of the cover plate 11 forms the fixing portion 111; or, the cover plate 11 includes a ring plate and a deformation plate, and the ring plate and the deformation plate can be fixedly connected by welding, bonding, fastener connection, clamping, crimping, riveting, etc., wherein the fixing portion 111 is located on the ring plate, and the deformation portion 112 is located on the deformation plate.

[0052] It is understandable that the adjusting member 13 can be fixedly connected to the deforming portion 112 by, but not limited to, welding, crimping, clamping, bonding, riveting, threading, etc.; or, the adjusting member 13 can also be integrally connected to the deforming portion 112.

[0053] Optionally, the adjusting member 13 may be a screw, a threaded rod, a stud, a bolt, etc.

[0054] The driving member 12 has a through hole 1211, and the adjusting member 13 passes through the through hole 1211. The adjusting member 13 can be threadedly connected to the through hole 1211, or can be disconnected from the through hole 1211.

[0055] When the adjusting member 13 is threadedly connected to the through hole 1211, the wall of the through hole 1211 is provided with internal threads. Specifically, the internal threads can be provided on the entire wall of the through hole 1211, or on a portion of the wall of the through hole 1211. The threaded connection between the adjusting member 13 and the through hole 1211 enables the adjusting member 13 to move axially when the driving member 12 rotates.

[0056] When the adjusting member 13 is not connected to the through hole 1211, the through hole 1211 may be a blank hole, or may have internal threads. However, if the minimum inner diameter of the through hole 1211 is larger than the outer diameter of the adjusting member 13, even if the through hole 1211 is internally threaded, it cannot be connected to the adjusting member 13. In the case where the adjusting member 13 is not connected to the through hole 1211, the tuning structure 10 should have a threaded hole connected to the through hole 1211. The adjusting member 13 passes through the through hole 1211 and the threaded hole, and the adjusting member 13 is threadedly connected to the threaded hole, so that the driving member 12 can drive the adjusting member 13 to move axially when it rotates.

[0057] It should be noted that the number of operating members 14 can be one or more; the operating member 14 can be mounted on the adjusting member 13, or the operating member 14 can be located on one side of the adjusting member 13 and spaced apart from the adjusting member 13. When the operating member 14 is mounted on the adjusting member 13, the operating member 14 can be provided with a plain hole or a threaded hole; when the operating member 14 is located on one side of the adjusting member 13, the operating member 14 can be a convex column or a bump with a clamping surface, or can be an inverted U-shaped handle.

[0058] It is understandable that the operating member 14 can be fixedly connected to the driving member 12 by riveting, threading, clamping, pressing, bonding, welding, etc.

[0059] By providing an operating member 14 on the driving member 12, a circumferential rotational force can be applied to the operating member 14 during tuning, thereby driving the driving member 12 to rotate; since the side of the driving member 12 facing the deformation portion 112 abuts against the fixed portion 111, when the driving member 12 rotates and has a tendency to move downward, it can drive the adjusting member 13 to move upward, thereby driving the deformation portion 112 to deform upward.

[0060] The beneficial effects of the tuning structure 10 provided in the embodiment of the present application are as follows: by providing an operating member 14 on the driving member 12, the operating member 14 can be rotated by hand or by an external tool to drive the driving member 12 to rotate, so that the adjusting member 13 drives the deformation portion 112 to deform, thereby realizing the adjustment of the resonant frequency, and the tuning operation is simple and quick. Moreover, since the operating member 14 is separately connected to the driving member 12, on the one hand, the size of the operating member 14 will not be restricted by the driving member 12, and an operating surface of sufficient area can be provided for external tools or human hands to contact, which is easy to clamp and facilitates the application of force to the operating member 14. At the same time, the operating member 14 can remain stable during the process of applying force and is not easy to fall off; on the other hand, the operating member 14 is separately fixedly connected to the side of the driving member 12 away from the deformation portion 112, that is, the operating member 14 is protruded from the surface of the driving member 12, which prevents external tools from extending into the driving member 12 and contacting the deformation portion 112, strengthens the protection of the deformation portion 112, and improves the life of the filter 100. The protruding operating member 14 is also convenient for external tools or human hands to clamp, facilitating tuning operations; on the other hand, the operating member 14 can be independently processed and formed, and can even be a standard part available on the market, which is not only convenient for processing, but also for mass production, and greatly reduces processing costs and manufacturing costs compared to the integrally formed operating member 14 and driving member 12.

[0061] In some embodiments, the operating member 14 has a connecting hole 141 communicating with the penetration hole 1211 , and the adjusting member 13 passes through the penetration hole 1211 and the connecting hole 141 in sequence.

[0062] It can be understood that the aperture of the through hole 1211 can be larger than the aperture of the connecting hole 141; or, the aperture of the through hole 1211 can be equal to the aperture of the connecting hole 141; or, the aperture of the through hole 1211 can be smaller than the aperture of the connecting hole 141.

[0063] It can be understood that the through hole 1211 can be coaxially arranged with the communicating hole 141 , or the through hole 1211 can be non-coaxially arranged with the communicating hole 141 .

[0064] It can be understood that the adjusting member 13 can have a connection relationship with the communicating hole 141 such as abutment or threaded connection, or the adjusting member 13 can be spaced from the inner wall of the communicating hole 141 without having a connection relationship.

[0065] It is understood that the adjusting member 13 may be connected to the through-hole 1211 but not to the communicating hole 141, or may be connected to the communicating hole 141 but not to the through-hole 1211, or may be connected to both the through-hole 1211 and the communicating hole 141. Of course, the adjusting member 13 may also be connected to neither the through-hole 1211 nor the communicating hole 141. In this case, the tuning structure 10 has a threaded hole communicating with the through-hole 1211 and the communicating hole 141, and the adjusting member 13 is threadedly connected to the threaded hole.

[0066] Based on the above scheme, the operating member 14 can be mounted on the adjusting member 13, which is equivalent to overlapping the sizes of the adjusting member 13 and the operating member 14 in the radial direction, reducing the total size of the two respectively in the radial direction, making the overall structure simpler, and avoiding the interference that may be caused when the two are set separately in the radial direction; at the same time, it is also more convenient for people to use hands or external tools to screw the operating member 14, avoiding the situation where the operating member 14 is set on one side of the adjusting member 13 and the operating member 14 is located on the side of the driving member 12, which causes inconvenience in the adjustment operation.

[0067] In some embodiments, an internal thread is provided on the wall of the communicating hole 141 , and the adjusting member 13 is threadedly connected to the communicating hole 141 , that is, the external thread of the adjusting member 13 matches the internal thread.

[0068] It is understood that the internal thread can be provided on the entire wall of the communicating hole 141, or on a portion of the wall of the communicating hole 141. When the entire wall of the communicating hole 141 is provided with the internal thread, the operating member 14 can be a nut.

[0069] Based on the above solution, since the operating member 14 is separately connected to the driving member 12, the operating member 14, as an independent component, can be independently machined with a threaded hole. Even standard components with threaded holes on the market (such as nuts) can be used. This avoids the need to machine internal threads on the driving member 12, which would cause processing difficulties, reduces processing difficulty, and improves production efficiency. Furthermore, the thickness of the operating member 14 can be greater than that of the driving member 12, which can also increase the connection area with the adjusting member 13, making the connection more stable and reliable, and the rotation more stable.

[0070] In some embodiments, when an internal thread is provided in the connecting hole 141, the connecting hole 141 is coaxially arranged with the through hole 1211, and an internal thread is also provided on the hole wall of the through hole 1211. The adjusting member 13 and the through hole 1211 as well as the adjusting member 13 and the connecting hole 141 are both threadedly connected, that is, the external thread of the adjusting member 13 is simultaneously matched with the internal thread of the through hole 1211 and the internal thread of the connecting hole 141.

[0071] Among them, the apertures of the through hole 1211 and the connecting hole 141 can be the same, so that the diameter of the part of the adjusting member 13 that cooperates with the through hole 1211 and the connecting hole 141 can remain unchanged and no additional processing is required; the aperture of the through hole 1211 can also be larger than the aperture of the connecting hole 141. At this time, the part of the adjusting member 13 that cooperates with the through hole 1211 and the connecting hole 141 is processed into a stepped structure.

[0072] Based on the above solution, by simultaneously threading the through hole 1211 and the connecting hole 141 with the adjusting member 13, the connection area is further increased, the connection is more stable and reliable, the rotation is smoother, and the stability of the frequency adjustment is further improved.

[0073] In some embodiments, when the communicating hole 141 is provided with an internal thread, the through hole 1211 is a blank hole, and the aperture of the through hole 1211 can be greater than or equal to the aperture of the communicating hole 141. Based on this, it is possible to provide only the internal thread on the operating member 14, and rely on the internal thread of the operating member 14 and the external thread of the adjusting member 13 to drive the deformable portion 112, without having to process the internal thread on the driving member 12, thereby saving the processing steps and processing costs of the tuning structure 10.

[0074] In some embodiments, the operating member 14 is bonded to the driving member 12. The bonding may be performed by dispensing glue.

[0075] In some embodiments, the operating member 14 is welded to the driving member 12. The welding may be laser welding, ultrasonic welding, or the like.

[0076] In some embodiments, the operating member 14 and the driving member 12 are connected by both bonding and welding, that is, the operating member 14 and the driving member 12 are fixedly connected separately by both bonding and welding.

[0077] By adopting the above solution, the operating member 14 and the driving member 12 can be connected and fixed by bonding and / or welding, thereby improving the connection convenience, connection efficiency and connection reliability between the operating member 14 and the driving member 12.

[0078] In some embodiments, the fixing portion 111 has a mounting groove 1111, the driving member 12 is installed in the mounting groove 1111, and the tuning structure 10 also includes a limiting member 15 connected to the fixing portion 111, and the driving member 12 abuts against the limiting member 15 on one side along its thickness direction and abuts against the groove wall of the mounting groove 1111 on the other side.

[0079] The mounting groove 1111 is an annular groove, and the driving member 12 is a disc structure as a whole.

[0080] The side of the driving member 12 abutting against the limiting member 15 is the side of the driving member 12 facing away from the deformation portion 112 , and the side of the driving member 12 abutting against the groove wall of the installation groove 1111 is the side of the driving member 12 facing the deformation portion 112 .

[0081] Based on the above scheme, when tuning the filter 100, a circumferential rotational force can be applied to the operating member 14, thereby driving the driving member 12 to rotate; since the side of the driving member 12 facing the deformation portion 112 abuts against the groove wall of the installation groove 1111, that is, the driving member 12 is restricted from moving downward, therefore, when the driving member 12 rotates and has a tendency to move downward, it can drive the adjustment member 13 to move upward, thereby driving the deformation portion 112 to deform upward; since the side of the driving member 12 facing away from the deformation portion 112 abuts against the limiting member 15, that is, the driving member 12 is restricted from moving upward, therefore, when the driving member 12 rotates and has a tendency to move upward, it can drive the adjustment member 13 to move downward, thereby driving the deformation portion 112 to deform downward. In this way, bidirectional deformation and bidirectional adjustment are achieved, and the resonant frequency of the filter 100 can be increased or decreased.

[0082] In other embodiments, the limiting member 15 may not be provided, that is, the driving member 12 can only drive the deformation portion 112 to deform upward through the adjusting member 13, thereby achieving unidirectional deformation and unidirectional adjustment.

[0083] Please also refer to Figure 3 and Figure 4In some embodiments, the limiting member 15 is integrally formed on the fixing portion 111, and an assembly groove 151 is provided on the limiting member 15. The driving member 12 includes a driving body 121 and an installation portion 122 provided on the outer wall surface of the driving body 121. The installation portion 122 can pass through the assembly groove 151 and enter the installation groove 1111.

[0084] The number of the mounting portions 122 may be equal to or smaller than the number of the assembly slots 151 .

[0085] The shape of the mounting portion 122 can be the same as or different from the shape of the assembly slot 151, as long as the mounting portion 122 can pass through the assembly slot 151. When the shape of the mounting portion 122 is the same as the shape of the assembly slot 151, both can be semicircular, rectangular, triangular, trapezoidal, etc.

[0086] The number of the mounting portions 122 can be one or more. Optionally, the number of the mounting portions 122 is multiple, and the multiple mounting portions 122 are evenly spaced along the circumference of the driving body 121. In this way, the driving member 12 can be subjected to more uniform force, is less prone to damage, and rotates more smoothly.

[0087] Optionally, the stopper 15 is an annular baffle. Since the stopper 15 is integrally formed with the fixing portion 111, and the fixing portion 111 is generally less hard than the driver 12, the hardness of the stopper 15 is generally less than that of the driver 12. If the mounting portion 122 is an annular baffle, while the stopper 15 is a structure such as a bump or rib, the stopper 15 will be less hard and weaker, making it susceptible to deformation or even breakage. However, designing the stopper 15 as an annular baffle and the mounting portion 122 as a structure such as a bump or rib increases the structural strength of the stopper 15.

[0088] Of course, in other embodiments, the mounting portion 122 may be an annular baffle, and the limiting member 15 may be a structure such as a convex block or a convex strip.

[0089] Of course, in other embodiments, the hardness of the fixing portion 111 may also be greater than or equal to the hardness of the driving member 12 .

[0090] Please refer to Figure 6 In some embodiments, the limiting member 15 is a clip separately connected to the fixing portion 111, that is, after the driving member 12 is installed in the mounting groove 1111, the clip is clamped on the fixing portion 111 to limit the driving member 12 in the upward direction.

[0091] It is understood that the driving member 12 can be in the form of a flat plate as a whole, or can be in the form of a Figure 3 Shown with groove 1212.

[0092] Based on the above solution, the installation of the driving member 12 is facilitated. The driving member 12 does not need to be provided with a mounting portion 122 on the outer wall surface of the driving body 121 , and the limiting member 15 does not need to be processed with an assembly groove 151 , thereby reducing the processing steps.

[0093] In other embodiments, the limiting member 15 may be a clamping block separately connected to the fixing portion 111 , and the clamping block may be fixed to the fixing portion 111 by welding, fastener connection, or the like.

[0094] Please refer to Figure 3 In some embodiments, the driving member 12 is recessed on one side of the deformation portion 112 to form a groove 1212 , and the groove 1212 is directly opposite to the deformation portion 112 .

[0095] Based on the above solution, it is possible to ensure that the deformation portion 112 has sufficient deformation when deforming upward, thereby increasing the tuning range; moreover, in the thickness direction of the cover plate 11, the mounting groove 1111 can be as close to the deformation portion 112 as possible, thereby reducing the thickness of the cover plate 11.

[0096] In other embodiments, please refer to Figure 5 The driving member 12 may also be in the shape of a flat plate as a whole, that is, it does not have the groove 1212.

[0097] In some embodiments, the adjusting member 13 is made of aluminum, and the deforming portion 112 is made of a high-toughness aluminum alloy, which facilitates laser welding of the adjusting member 13 to the deforming portion 112 .

[0098] In some embodiments, the driving member 12 and the operating member 14 are made of steel.

[0099] In other embodiments, the driving member 12 , the adjusting member 13 , and the operating member 14 may be made of other metals or non-metals (such as plastic).

[0100] Please refer to Figure 2 and Figure 7 The second aspect of the present application provides a filter 100 . The filter 100 includes a cavity 30 and a tuning structure 10 as in the first aspect. The tuning structure 10 is fixed on the cavity 30 , and a cover plate 11 covers the opening of the cavity 30 .

[0101] A resonator, which can be a metal resonator or a dielectric resonator, is fixed within the cavity 30. Rotating the operating member 14 manually or with an external tool drives the driving member 12 to rotate, thereby causing the adjusting member 13 to deform the deformable portion 112, thereby moving the deformable portion 112 closer to or further away from the resonator, thereby adjusting the resonant frequency. This makes tuning simple and quick.

[0102] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A tuning structure, characterized in that: It includes a cover plate, a driving member, an adjusting member and an operating member, the cover plate includes a fixed portion and a deforming portion connected to the fixed portion, the driving member abuts against the fixed portion on a side facing the deforming portion, the driving member has a through hole, the adjusting member has an external thread and passes through the through hole, and one end of the adjusting member close to the deforming portion is connected to the deforming portion; the operating member is separately fixedly connected to the side of the driving member facing away from the deforming portion.

2. The tuning structure according to claim 1, wherein: The operating member has a communicating hole communicating with the penetration hole, and the adjusting member passes through the penetration hole and the communicating hole in sequence.

3. The tuning structure according to claim 2, wherein: An internal thread is provided on the hole wall of the communicating hole, and the adjusting member is threadedly connected to the communicating hole.

4. The tuning structure according to claim 3, wherein: The penetration hole is a light hole.

5. The tuning structure according to claim 1, wherein: The operating member is bonded to the driving member; and / or the operating member is welded to the driving member.

6. The tuning structure according to any one of claims 1 to 5, wherein: The fixing portion has an installation slot, the driving member is installed in the installation slot, the tuning structure also includes a limiting member connected to the fixing portion, and the driving member abuts against the limiting member on one side along its thickness direction and abuts against the slot wall of the installation slot on the other side.

7. The tuning structure according to claim 6, wherein: The limiting member is integrally formed on the fixing portion, and an assembly groove is provided on the limiting member. The driving member includes a driving body and a mounting portion provided on the outer wall surface of the driving body, and the mounting portion can pass through the assembly groove and enter the mounting groove.

8. The tuning structure according to claim 6, wherein: The limiting member is a clamping spring or a clamping block separately connected to the fixing portion.

9. The tuning structure according to any one of claims 1 to 5, wherein: The driving member is recessed toward one side of the deformation portion to form a groove, and the groove is directly opposite to the deformation portion.

10. A filter, characterized in that: The invention comprises a cavity and a tuning structure according to any one of claims 1 to 9, wherein the tuning structure is mounted on the cavity, and the cover plate covers the opening of the cavity.

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