Resonator and filter

Abstract

The present application provides a resonator and a filter. The resonator comprises a cover plate (11), a limiting member (20), a driving member (30), and an adjusting member (40), wherein the cover plate (11) is provided with a tuning portion (111) and a fixing portion (112). The limiting member (20) is separately connected to the fixing portion (112), and is provided with a limiting portion (21) that is parallel to and spaced from the cover plate (11); and an exposure hole (211) passes through the limiting portion (21). The driving member (30) is rotatably limited and mounted between the limiting portion (21) and the fixing portion (112), and a threaded hole (31) passes through the driving member (30). The adjusting member (40) is threadedly connected to the threaded hole (31), and is fixed to the tuning portion (111). The driving member (30) is partially exposed to the exposure hole (211). The resonator can achieve bi-directional tuning, which is relatively easy to achieve, and the tuning operation is simple, stable and controllable.

Description

Resonator and filter

[0001] This application claims priority to two Chinese patent applications, application numbers 202411304966.4 and 202422282015.3, both filed on September 14, 2024, with the State Intellectual Property Office of the People's Republic of China, and both entitled "Resonator and filter", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application belongs to the field of communication technology, and particularly relates to a resonator and filter. BACKGROUND

[0003] In some cases, the resonator includes a cavity, a deformed cover plate, a support cover plate, an adjusting nut, and an adjusting piece. The deformed cover plate covers the cavity. A mounting groove is formed on the side of the deformed cover plate away from the cavity. A deformed groove is formed in the groove bottom of the mounting groove. The support cover plate is mounted in the mounting groove. A through hole is formed in the center of the support cover plate. The adjusting nut is located on the side of the support cover plate away from the deformed groove. The adjusting piece is threadedly connected to the adjusting nut and passes through the through hole. The end of the adjusting piece is fixedly connected to the groove bottom of the deformed groove. Based on this, when the adjusting nut is rotated, the adjusting nut can apply a reaction force to the adjusting piece to cause the adjusting piece to deform the groove bottom of the deformed groove away from the cavity, thereby achieving one-way adjustment of the resonant frequency. However, it is difficult for the resonator to cause the adjusting piece to deform the groove bottom of the deformed groove towards the cavity by rotating the adjusting nut, making it difficult to achieve two-way adjustment of the resonant frequency, and there is a problem of difficulty in two-way tuning.

[0004] SUMMARY

[0005] Embodiments of the present application provide a resonator and filter, aiming to solve the problem of difficulty in two-way tuning of existing resonators.

[0006] To achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows:

[0007] In a first aspect, a resonator is provided, comprising:

[0008] a cover plate having a tunable portion capable of being deformed under force, and a fixed portion provided on the outer periphery of the tunable portion;

[0009] a limiting piece connected in two parts to the fixed portion and having a limiting portion parallel and spaced apart from the cover plate, the limiting portion being provided with an exposed hole;

[0010] a driving piece rotatably and limitingly mounted between the limiting portion and the fixed portion, the driving piece being provided with a threaded hole;

[0011] An adjusting member is threadedly connected to the threaded hole and fixed to the tuning portion; and a portion of the driving member is exposed to the exposure hole.

[0012] In some embodiments, a friction member is arranged between the limiting portion and the driving member; and / or, a friction member is arranged between the driving member and the fixing portion.

[0013] In some embodiments, the limiting portion has a rough area on a side thereof facing the driving member;

[0014] and / or, the driving member has a rough area on a side thereof facing the limiting portion;

[0015] and / or, the driving member has a rough area on a side thereof facing the fixing portion;

[0016] and / or, the fixing portion has a rough area on a side thereof facing the driving member.

[0017] In some embodiments, a distance between the limiting portion and the fixing portion is equal to or less than a thickness of the driving member.

[0018] In some embodiments, the fixing portion comprises, in sequence from the tuning portion outward, a first ring portion, a second ring portion, and a third ring portion, and the first ring portion and the limiting portion jointly limit the driving member;

[0019] At a side close to the limiting member, at least one of the first ring portion and the third ring portion protrudes from the second ring portion and forms a stepped groove together with the second ring portion; and a portion of the limiting member is mounted to the stepped groove and fixedly connected to an inner wall of the stepped groove.

[0020] In some embodiments, the limiting member comprises a mounting portion connected to an outer periphery of the limiting portion and bent toward a side close to the driving member, and the mounting portion is mounted to the stepped groove and fixedly connected to the inner wall of the stepped groove.

[0021] In some embodiments, at a side close to the limiting member, the third ring portion protrudes from the second ring portion and forms the stepped groove together with the second ring portion; and an outer peripheral wall of the mounting portion is fixedly connected to the third ring portion.

[0022] In some embodiments, at a side close to the limiting member, the second ring portion is recessed in or flush with the first ring portion.

[0023] In some embodiments, at a side close to the limiting member, the first ring portion protrudes from the second ring portion and forms the stepped groove together with the second ring portion; and an inner peripheral wall of the mounting portion is fixedly connected to the first ring portion.

[0024] In some embodiments, the third ring portion protrudes from the second ring portion and forms the stepped groove together with the second ring portion on one side close to the limiting member; and the outer peripheral wall of the limiting member is connected and fixed with the third ring portion.

[0025] The limiting member is a flat plate structure; or the limiting member comprises a mounting portion connected to the outer periphery of the limiting portion and bent to be arranged away from the driving member.

[0026] In some embodiments, the limiting member is in interference press-fit with the groove wall of the stepped groove.

[0027] In some embodiments, the limiting member and the fixing portion are further fixed by welding.

[0028] In some embodiments, the adjusting member and the tuning portion are in interference press-fit, press riveting connection, bonding or welding.

[0029] In some embodiments, the adjusting member comprises a main body portion and a connecting portion connected to one end of the main body portion close to the tuning portion; and the projection of the connecting portion covers the projection of the main body portion along the axial direction of the adjusting member.

[0030] In some embodiments, the driving member comprises a driving main body and an extension portion protruding from the driving main body, and the threaded hole penetrates through the extension portion and the driving main body.

[0031] In some embodiments, the driving member comprises an operating portion exposed in the exposure hole.

[0032] In some embodiments, the driving member comprises a driving main body and an extension portion protruding from the driving main body, the threaded hole penetrates through the extension portion and the driving main body, the adjusting member and the extension portion are exposed in the exposure hole, and the operating portion is arranged on the outer peripheral wall of the extension portion.

[0033] In some embodiments, the driving main body is provided with an annular groove on the outer periphery of the extension portion.

[0034] In some embodiments, the driving member comprises a driving main body and an extension portion protruding from the driving main body, the threaded hole penetrates through the extension portion and the driving main body, and the operating portion is arranged on the driving main body.

[0035] In some embodiments, the adjusting member is made of aluminum material, and the tuning portion is made of soft aluminum alloy material;

[0036] And / or, the driving member is made of steel material;

[0037] And / or, the limiting member is made of hard aluminum alloy material, and the fixing portion is made of soft aluminum alloy material.

[0038] In some embodiments, the cover plate is a one-piece single-layer cover plate.

[0039] In some embodiments, the cover plate is a two-layer cover plate, which comprises a first plate member and a second plate member, the second plate member having the fixing portion, and the first plate member being arranged in a stacked manner on a side of the second plate member away from the driving member and having the tuning portion.

[0040] In some embodiments, a sealing member is arranged between the limiting portion and the driving member.

[0041] In a second aspect, a filter is provided, which comprises the resonator provided in the embodiments of the present application.

[0042] The resonator provided in the present application has the following beneficial effects:

[0043] The resonator provided in the embodiments of the present application can deform the tuning portion of the cover plate in a direction close to the limiting portion or in a direction away from the limiting portion, so that the increase adjustment or decrease adjustment of the resonant frequency can be realized, bidirectional tuning can be realized, and the difficulty of bidirectional tuning is relatively small, the tuning operation is simple, stable and controllable. In particular, since the driving member does not need to adopt the structure design of the avoiding opening and the outer peripheral flange in the prior art during assembly, the driving member and the limiting member can have a regular complete annular structure, the limiting member can form complete limiting to the driving member, therefore, the driving member will not be out of the limiting member during rotation, and the rotation stroke of the driving member will not be limited due to "out of the limiting member", so that the tuning amount of a single rotation of the driving member is relatively large, and the tuning process is more stable and controllable. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0045] Fig. 1 is a perspective view of the resonator provided in some embodiments of the present application;

[0046] Fig. 2 is a sectional view of the resonator provided in Fig. 1;

[0047] Fig. 3 is an exploded view of the resonator provided in Fig. 1;

[0048] Fig. 4 is a sectional view of the resonator provided in another embodiment of the present application, in which the resonant rod is connected and fixed to the plate member opposite to the cover plate on the resonator housing;

[0049] Figure 5 is a sectional view of a resonator according to some embodiments of the present application, wherein the resonator rod is connected to the tuning portion;

[0050] Figure 6 is a sectional view of a resonator according to some embodiments of the present application, wherein a friction member is provided between the limiting portion and the driving member, and a friction member is provided between the driving member and the fixing portion;

[0051] Figure 7 is a sectional view of a resonator according to some embodiments of the present application, wherein the third ring portion protrudes from the second ring portion and forms a stepped groove with the second ring portion on the side close to the limiting member, and the second ring portion is flush with the first ring portion;

[0052] Figure 8 is a sectional view of a resonator according to some embodiments of the present application, wherein the third ring portion protrudes from the second ring portion and forms a stepped groove with the second ring portion on the side close to the limiting member, and the second ring portion protrudes from the first ring portion;

[0053] Figure 9 is a sectional view of a resonator according to some embodiments of the present application, wherein the inner peripheral wall of the mounting portion is connected to the first ring portion;

[0054] Figure 10 is a sectional view of a resonator according to some embodiments of the present application, wherein the limiting member is a flat plate-shaped structure;

[0055] Figure 11 is a sectional view of a resonator according to some embodiments of the present application, wherein the mounting portion is bent on the side away from the driving member;

[0056] Figure 12 is a sectional view of a resonator according to some embodiments of the present application, wherein the stepped groove is provided with a chip groove at the bottom;

[0057] Figure 13 is a sectional view of a resonator according to some embodiments of the present application, wherein the driving body is provided with an annular groove on the outer periphery of the extending portion;

[0058] Figure 14 is a sectional view of a resonator according to some embodiments of the present application, wherein the cover plate is a double-layer cover plate, and the first plate member is stacked on the side of the second plate member away from the driving member.

[0059] In the drawings, reference signs: 10 - resonator housing, 11 - cover plate, 111 - tuning part, 112 - fixed part, 1121 - first ring part, 1122 - second ring part, 1123 - third ring part, 1124 - stepped groove, 1125 - chip containing groove, 113 - recessed cavity, 114 - first plate, 115 - second plate, 12 - cavity, 13 - resonant cavity; 20 - limiting piece, 21 - limiting part, 211 - exposed hole, 22 - mounting part; 30 - driving piece, 31 - threaded hole, 32 - driving body, 321 - annular groove, 33 - extension, 34 - operating part; 40 - adjusting piece, 41 - main body, 42 - connecting part; 50 - resonant rod, 60 - friction piece. DETAILED DESCRIPTION

[0060] In order to make the technical problems, technical solutions and beneficial effects of the present application clear, the present application will be described in detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application. If not specifically stated, all embodiments and optional embodiments of the present application can be combined to form new technical solutions. If not specifically stated, all technical features and optional technical features of the present application can be combined to form new technical solutions.

[0061] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0062] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0063] In the present application, unless specifically defined otherwise and limited, the terms "mounting", "connection", "linking", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0064] In the present application, "axial direction" refers to the extension direction of the central axis of the corresponding structure, "radial direction" refers to any direction passing through the central axis and perpendicular to the central axis of the corresponding structure, and "circumferential direction" refers to the circumferential direction of the outer surface of the corresponding structure.

[0065] In some cases, the resonator comprises a cavity, a deformed cover plate, a supporting cover plate, an adjusting nut and an adjusting piece, the deformed cover plate covers the cavity, a mounting groove is formed on the side of the deformed cover plate away from the cavity, a deformed groove is formed in the groove bottom of the mounting groove, the supporting cover plate is installed in the mounting groove and covers the opening of the deformed groove, a through hole is formed in the center of the supporting cover plate, the adjusting nut is located on the side of the supporting cover plate away from the deformed groove, the adjusting piece is threadedly connected to the adjusting nut and penetrates the through hole, and the end of the adjusting piece is fixedly connected to the groove bottom of the deformed groove. Based on this, when the adjusting nut is rotated, the adjusting nut can exert a reaction force on the adjusting piece to move the adjusting piece away from the cavity to drive the groove bottom of the deformed groove to deform away from the cavity, thereby achieving one-way adjustment of the resonant frequency. However, this resonator can only achieve one-way adjustment of the resonant frequency, and it is difficult to rotate the adjusting nut to drive the adjusting piece to deform the groove bottom of the deformed groove towards the cavity, making it difficult to achieve two-way adjustment of the resonant frequency, and there is a problem of difficulty in two-way tuning.

[0066] To this end, in order to achieve bidirectional adjustment of the resonant frequency, in some cases, the resonator comprises a cavity, a cover plate, a driving member and an adjusting member, the cover plate covers the cavity, a deformation groove is formed on the side of the cover plate away from the cavity, an annular mounting groove is formed in the groove wall of the deformation groove, a relief opening is formed in the groove wall of the mounting groove away from the groove bottom of the deformation groove, the outer periphery of the driving member is provided with a flange, the driving member can be disassembled in the mounting groove when the flange is aligned with the relief opening, the driving member is rotatably mounted in the mounting groove, a threaded hole is formed in the center of the driving member, the adjusting member is threadedly connected to the threaded hole of the driving member, and the end of the adjusting member is fixedly connected to the groove bottom of the deformation groove. Based on this, since the opposite two groove walls of the mounting groove can bidirectionally limit the driving member, by rotating the driving member, the adjusting member can be caused to drive the deformation groove groove bottom to deform in the direction away from the cavity, or to deform in the direction close to the cavity, thereby achieving bidirectional adjustment of the resonant frequency. However, in the process of rotating the driving member, the flange of the driving member is easily rotated to the relief opening, causing the driving member to be disengaged from the mounting groove, thereby limiting the single rotation stroke of the driving member, causing the tuning amount of the single rotation of the driving member to be small, and causing the tuning difficulty to be large and the tuning operation to be difficult to control. Therefore, although the resonator can achieve bidirectional adjustment of the resonant frequency, it also has the problem of bidirectional tuning difficulty.

[0067] Therefore, the embodiments of the present application provide a resonator which can achieve bidirectional adjustment of the resonant frequency and has small bidirectional tuning difficulty, simple, stable and controllable tuning operation.

[0068] The specific implementation of the present application is described in detail below in combination with specific embodiments:

[0069] Please refer to FIG. 1, FIG. 2 and FIG. 3, some embodiments of the present application provide a resonator comprising a cover plate 11, a limiting member 20, a driving member 30 and an adjusting member 40, the cover plate 11 has a tuning portion 111 which can be deformed under force, and a fixed portion 112 provided on the outer periphery of the tuning portion 111; the limiting member 20 is connected to the fixed portion 112 in two parts and has a limiting portion 21 which is parallel and spaced apart from the cover plate 11, the limiting portion 21 is provided with an exposure hole 211; the driving member 30 is rotatably limited and installed between the limiting portion 21 and the fixed portion 112, the driving member 30 is provided with a threaded hole 31; the adjusting member 40 is threadedly connected to the threaded hole 31 and fixed to the tuning portion 111; a part of the driving member 30 is exposed in the exposure hole 211.

[0070] It should be noted that the resonator comprises a resonator shell 10, the inside of the resonator shell 10 has a resonant cavity 13. The resonator shell 10 can achieve shielding function to prevent signal leakage.

[0071] The plate on one side of the resonator shell 10 is a cover plate 11. In actual application scenarios, the resonator can be placed with the cover plate 11 facing up, or placed with the cover plate 11 facing left, right, front, or back. In addition, the shape, size, material, etc. of the resonator shell 10 can be flexibly set as needed.

[0072] The cover plate 11 has a tuning portion 111 and a fixing portion 112. The fixing portion 112 is arranged around the outer periphery of the tuning portion 111, and is used to connect and fix with other parts (which can be referred to as a cavity 12) of the resonator shell 10. The thickness of the tuning portion 111 is smaller than the thickness of the fixing portion 112, and the thickness of the tuning portion 111 is relatively thin. The tuning portion 111 can be deformed towards the side close to the resonant cavity 13 under force, or deformed towards the side away from the resonant cavity 13 under force, to adjust the resonant frequency. The tuning portion 111 can be integrally formed with the fixing portion 112, or the tuning portion 111 can be connected separately to the fixing portion 112. When the tuning portion 111 is connected separately to the fixing portion 112, the tuning portion 111 can be connected to the side of the fixing portion 112 facing the resonant cavity 13 in a stacked manner, or the tuning portion 111 can be connected to the inner periphery of the fixing portion 112.

[0073] It should be further noted that the limiting piece 20 is separately formed and connected with respect to the cover plate 11. The limiting piece 20 is connected separately to the outer side of the fixing portion 112 (i.e. the side away from the resonant cavity 13, i.e. the side facing the outside of the resonator), and is fixed with respect to the fixing portion 112, to stabilize the installation position and state of the limiting piece 20 with respect to the fixing portion 112. The limiting piece 20 can be connected and fixed with the fixing portion 112 by means of, but not limited to, welding, insertion, crimping, clamping, bonding, threaded connection, screw connection, etc.

[0074] The limiting piece 20 has a limiting portion 21 in the form of a plate, which is parallel and spaced apart from the cover plate 11, especially from the fixing portion 112. The driving piece 30 is installed between the limiting portion 21 and the fixing portion 112, and has a rotational freedom (i.e. the driving piece 30 can be rotated under force). The limiting portion 21 is limited on one side of the driving piece 30 to hinder the movement of the driving piece 30 in the direction close to the limiting portion 21; the fixing portion 112 is limited on the other side of the driving piece 30 to hinder the movement of the driving piece 30 in the direction away from the limiting portion 21; so that the limiting portion 21 and the fixing portion 112 jointly limit the driving piece 30 therebetween, i.e. the limiting portion 21 and the fixing portion 112 jointly limit the driving piece 30 in two directions and on two sides, thereby constraining and hindering the axial movement of the driving piece 30.

[0075] The distance between the limiting portion 21 and the fixing portion 112 can be greater than, equal to or slightly less than the thickness of the driving member 30. When the distance between the limiting portion 21 and the fixing portion 112 is equal to or slightly less than the thickness of the driving member 30, the limiting portion 21 and the fixing portion 112 can completely limit the axial movement of the driving member 30, and there is a certain friction between the limiting portion 21 and the driving member 30 and between the fixing portion 112 and the driving member 30, which can lock the driving member 30 to limit the rotation of the driving member 30, so as to limit the self-resetting of the adjusting member 40 and the tuning portion 111 after adjustment. In this case, the tuning portion 111 can be made of a plastic metal material which can be deformed and does not automatically rebound after deformation, or can be made of an elastic metal material which can be deformed and automatically rebounds after deformation.

[0076] It should be further pointed out that the driving member 30, the fixing portion 112 and the tuning portion 111 jointly form a concave cavity 113, which can reserve a deformation space for the tuning portion 111. The driving member 30 is provided with a threaded hole 31 which penetrates the driving member 30 along the thickness direction of the driving member 30. The outer periphery of the adjusting member 40 is provided with an external thread, and the adjusting member 40 is threadedly connected to the threaded hole 31. The end of the adjusting member 40 which extends into the concave cavity 113 is fixed to the tuning portion 111, and the adjusting member 40 is limited to rotate relative to the tuning portion 111 (i.e. does not have a rotational degree of freedom). The adjusting member 40 can be connected and fixed to the tuning portion 111 by means of welding, pressure bonding, clamping, bonding, riveting, fastener connection and the like, but is not limited thereto. The adjusting member 40 can also be integrally formed and connected with the tuning portion 111, i.e. the adjusting member 40 and the tuning portion 111 can be an integral structure.

[0077] The adjusting member 40 can be connected to the tuning portion 111 on the side opposite to the resonant cavity 13 (as shown in FIG. 2). In this case, the adjusting member 40 can be made of metal or non-metal material. The adjusting member 40 can also be connected to the tuning portion 111 on the side facing the resonant cavity 13 by penetrating the tuning portion 111 (not shown in the figure). In this case, the tuning portion 111 needs to have a through hole for the adjusting member 40 to penetrate. Therefore, to prevent the signal in the resonant cavity 13 from leaking from the through hole of the tuning portion 111, the adjusting member 40 should be made of metal.

[0078] It should be further noted that the limiting portion 21 is provided with an exposure hole 211 which penetrates the limiting portion 21 along the thickness direction of the limiting portion 21. The exposure hole 211 can be a circular hole, a rectangular hole, a discontinuous annular hole, an arc-shaped hole, etc. Part of the driving member 30 is exposed in the exposure hole 211, so that the driving member 30 can be driven to rotate by applying force to the driving member 30 through the exposure hole 211 during tuning.

[0079] In some embodiments, part of the driving member 30 can be exposed in the exposure hole 211 together with the adjusting member 40. In this case, the adjusting member 40 and the part of the driving member 30 can be exposed in different exposure holes 211, or the adjusting member 40 and the part of the driving member 30 can be exposed in the same exposure hole 211. When the adjusting member 40 is exposed in the exposure hole 211, the exposure hole 211 can reserve space for the axial movement of the adjusting member 40.

[0080] Of course, in other embodiments, only part of the driving member 30 can be exposed in the exposure hole 211, and the adjusting member 40 is not exposed in the exposure hole 211. That is, the limiting portion 21 does not have a hole structure corresponding to the adjusting member 40, and the movement space of the adjusting member 40 in the axial direction is enclosed by the limiting portion 21. In this case, the exposure hole 211 can be an arc-shaped hole or a discontinuous annular hole arranged around the adjusting member 40.

[0081] The resonator provided by the embodiments of the present application can limit the side of the driving member 30 towards which the limiting part 21 of the limiting member 20 is located, and can limit the side of the driving member 30 towards which the fixing part 112 of the cover plate 11 is located, so that the driving member 30 can be limited in two directions and on two sides. Based on this, when the driving member 30 is rotated and has a tendency to move away from the limiting part 21, the driving member 30 can be limited and stopped from moving away from the limiting part 21 by the fixing part 112, so that the rotation of the driving member 30 can drive the adjusting member 40 to move axially along the threaded hole 31 towards the limiting part 21, so that the adjusting member 40 drives the tuning part 111 to deform towards the limiting part 21, so as to adjust the resonant frequency. Conversely, when the driving member 30 is rotated and has a tendency to move towards the limiting part 21, the driving member 30 can be limited and stopped from moving towards the limiting part 21 by the limiting part 21, so that the rotation of the driving member 30 can drive the adjusting member 40 to move axially along the threaded hole 31 away from the limiting part 21, so that the adjusting member 40 drives the tuning part 111 to deform away from the limiting part 21, so as to adjust the resonant frequency.

[0082] Therefore, the resonator provided by the embodiments of the present application can deform the tuning part 111 of the cover plate 11 towards the limiting part 21 or away from the limiting part 21, so as to adjust the resonant frequency in a large or small way, to realize two-way tuning, which is relatively easy, simple, stable and controllable. In particular, the driving member 30 does not need to adopt the structure design of the avoiding opening and the peripheral flange in the prior art during assembly, the driving member 30 and the limiting member 20 can have a regular and complete annular structure, and the limiting member 20 can form complete limiting for the driving member 30, so that the driving member 30 will not come out during rotation, and the rotation stroke of the driving member 30 will not be limited due to “coming out”, so that the tuning amount of a single rotation of the driving member 30 can be large, and the tuning process is more stable and controllable.

[0083] Moreover, the limiting member 20 and the cover plate 11 of the present application are connected in a split manner, compared with the prior art, the cover plate 11 does not need to be integrally formed with a groove structure for accommodating the driving member 30, so that the processing difficulty of the cover plate 11 can be reduced, and the processing convenience and efficiency of the cover plate 11 can be improved. Moreover, the driving member 30 of the present application can be directly limited and installed between the fixing part 112 and the limiting member 20, compared with the prior art, the driving member 30 does not need to adopt the complex and tedious assembly process of “aligning the peripheral flange of the driving member with the avoiding opening, and then clamping the driving member into the groove structure of the cover plate for accommodating the driving member”, and does not need to use a specific installation tool to complete the assembly, so that the assembly difficulty of the driving member 30 can be reduced, and the assembly convenience and efficiency of the driving member 30 can be improved.

[0084] As shown in FIG. 4, in one possible implementation, the resonant rod 50 can be accommodated in the resonant cavity 13. The resonant rod 50 is connected and fixed to the plate member of the resonator shell 10 opposite to the cover plate 11 and spaced opposite to the tuning portion 111. In this case, the tuning portion 111 can be deformed by force to change the distance between the tuning portion 111 and the resonant rod 50, so as to adjust the capacitance between the tuning portion 111 and the resonant rod 50, thereby achieving adjustment of the resonant frequency.

[0085] As shown in FIG. 5, in another possible implementation, the resonant rod 50 can be accommodated in the resonant cavity 13. The resonant rod 50 is connected and fixed to the tuning portion 111. In this case, the tuning portion 111 can be deformed by force to change the distance between the end of the resonant rod 50 away from the tuning portion 111 and the corresponding inner wall of the resonator shell 10, so as to adjust the capacitance between the end of the resonant rod 50 away from the tuning portion 111 and the corresponding inner wall of the resonator shell 10, thereby achieving adjustment of the resonant frequency.

[0086] The resonant rod 50 can be connected and fixed to the resonator shell 10 in various ways, such as but not limited to integral connection, welding, screw fastening, threaded connection, riveting, pressure connection, clamping, etc. The resonant rod 50 can be a metal resonant rod, a ceramic dielectric resonant rod, or a dielectric resonant rod made of other materials; the resonant rod 50 can be a hollow resonant rod or a solid resonant rod; the resonant rod 50 can have a resonant disc or not; the resonant disc can have a turned-up edge or not; the resonant rod 50 can be a circular rod, a polygonal rod, a special-shaped rod, a sheet-shaped resonant rod, a sheet metal resonant rod, or a resonant rod in other forms, etc.

[0087] As shown in FIG. 6, in some embodiments of the present application, a friction member 60 is arranged between the limiting portion 21 and the driving member 30.

[0088] It should be noted that the friction member 60 can be a gasket, asbestos, ceramic, or other component capable of providing friction. The friction member 60 can be a metal component or a non-metal component.

[0089] In one possible implementation, the limiting portion 21, the friction member 60, and the driving member 30 abut in sequence in a natural state, so that the limiting portion 21 and the driving member 30 always have a large friction force based on the friction member 60. In another possible implementation, the limiting portion 21, the friction member 60, and the driving member 30 have a gap in a natural state. The driving member 30 can be idled and moved in the direction close to the limiting portion 21 to the state of “the limiting portion 21, the friction member 60, and the driving member 30 abutting in sequence” during tuning. At this time, the limiting portion 21 and the driving member 30 can have a large friction force based on the friction member 60.

[0090] By adopting the above scheme, by arranging the friction piece 60 between the limiting portion 21 and the driving piece 30, the friction between the limiting portion 21 and the driving piece 30 can be large based on the friction piece 60 in the case that the limiting portion 21, the friction piece 60 and the driving piece 30 abut in sequence. Based on this, in the case that the limiting portion 21, the friction piece 60 and the driving piece 30 abut in sequence, the risk of loosening (i.e. self-rotation) of the driving piece 30 in the non-adjusting state (i.e. the state that the driving piece 30 is not rotated by external force, for example, the initial state that the tuning portion 111 is not deformed, the debugging completion state that the deformation amount of the tuning portion 111 is adjusted, etc.) can be reduced based on the friction, so that the risk of changing the deformation amount of the tuning portion 111 due to loosening of the driving piece 30 can be reduced, and the accuracy of the tuning effect and the stability of the resonator index can be improved. Especially, in the case that the limiting portion 21, the friction piece 60 and the driving piece 30 abut each other without gap, due to the existence of friction, the driving piece 30 can keep stable and steady during rotation, so that the rotation stability and rotation stroke controllability of the driving piece 30 can be improved, the over-rotation of the driving piece 30 can be reduced, and the controllability and adjusting stability of the tuning operation can be improved.

[0091] Please refer to FIG. 6, in some embodiments of the present application, the friction piece 60 is arranged between the driving piece 30 and the fixed portion 112.

[0092] It should be noted that, in a possible implementation, the driving piece 30, the friction piece 60 and the fixed portion 112 abut in sequence in the natural state, so that the friction between the driving piece 30 and the fixed portion 112 is always large based on the friction piece 60. In another possible implementation, the driving piece 30, the friction piece 60 and the fixed portion 112 have a gap in the natural state, the driving piece 30 can rotate idly and move towards the fixed portion 112 during tuning to the state that the driving piece 30, the friction piece 60 and the fixed portion 112 abut in sequence, at this time, the friction between the driving piece 30 and the fixed portion 112 can be large based on the friction piece 60.

[0093] By adopting the above scheme, by arranging the friction member 60 between the driving member 30 and the fixed portion 112, the driving member 30 and the fixed portion 112 can have a larger friction force based on the friction member 60 in the case that the driving member 30, the friction member 60 and the fixed portion 112 abut in sequence. Based on this, in the case that the driving member 30, the friction member 60 and the fixed portion 112 abut in sequence, the risk of loosening of the driving member 30 in the non-adjusting state can be reduced based on the friction force, so that the risk of change of the deformation amount of the tuning portion 111 due to loosening of the driving member 30 can be reduced, the accuracy of the tuning effect and the stability of the resonator index can be improved. Especially, in the case that the driving member 30, the friction member 60 and the fixed portion 112 abut each other without a gap, the driving member 30 can be kept smooth and stable during rotation due to the existence of the friction force, so that the rotation smoothness and the rotation stroke controllability of the driving member 30 can be improved, the excessive rotation of the driving member 30 can be reduced, and the controllability and the adjusting stability of the tuning operation can be improved.

[0094] Please refer to FIG. 2, in some embodiments of the present application, the side surface of the limiting portion 21 towards the driving member 30 has a rough area.

[0095] It should be noted that the rough area is an area with a larger roughness. In some embodiments, the rough area can be subjected to surface treatment (such as sandblasting, shot blasting, laser roughening, chemical etching, etc.) to increase the roughness of the rough area. In other embodiments, rough structures such as ribs, columns, ridges, grooves, etc. can be arranged at the rough area to increase the roughness of the rough area.

[0096] The side surface of the limiting portion 21 towards the driving member 30, especially the area of the side surface for abutting with the driving member 30, has a rough area. In one possible implementation, the rough area of the limiting portion 21 abuts with the driving member 30 in the natural state, so that the limiting portion 21 and the driving member 30 always have a larger friction force based on the rough area. In another possible implementation, there is a gap between the limiting portion 21 and the driving member 30 in the natural state, the driving member 30 can be idling and move towards the limiting portion 21 to the state of abutting with the rough area of the limiting portion 21 during the tuning process, at this time, the limiting portion 21 and the driving member 30 can have a larger friction force based on the rough area.

[0097] By adopting the above scheme, by setting the rough area on the side of the limiting portion 21 facing the driving piece 30, the friction between the limiting portion 21 and the driving piece 30 can be increased based on the rough area when the limiting portion 21 and the driving piece 30 are in abutment. Based on this, when the limiting portion 21 and the driving piece 30 are in abutment, the risk of the driving piece 30 loosening in the non-adjustment state can be reduced based on the friction, so that the risk of the deformation amount of the tuning portion 111 changing due to the loosening of the driving piece 30 can be reduced, the accuracy of the tuning effect and the stability of the resonator index can be improved. Especially, when there is no gap between the limiting portion 21 and the driving piece 30 and they are always in abutment, the driving piece 30 can keep stable and stable during rotation due to the existence of friction, so that the rotation stability and rotation stroke controllability of the driving piece 30 can be improved, the excessive rotation of the driving piece 30 can be reduced, and the controllability and stability of the tuning operation can be improved.

[0098] Please refer to FIG. 2, in some embodiments of the present application, the side of the driving piece 30 facing the limiting portion 21 has a rough area.

[0099] It should be noted that the side of the driving piece 30 facing the limiting portion 21, especially the area used to abut with the limiting portion 21, has a rough area. In one possible implementation, the rough area of the driving piece 30 and the limiting portion 21 are in abutment in the natural state, so that the driving piece 30 and the limiting portion 21 always have a large friction based on the rough area. In another possible implementation, there is a gap between the driving piece 30 and the limiting portion 21 in the natural state, the driving piece 30 can rotate idly and move towards the limiting portion 21 during tuning to the state of "abutting with the limiting portion 21", at this time, the driving piece 30 and the limiting portion 21 can have a large friction based on the rough area.

[0100] By adopting the above scheme, by setting the rough area on the side of the limiting portion 21 facing the driving piece 30, the friction between the limiting portion 21 and the driving piece 30 can be increased based on the rough area when the limiting portion 21 and the driving piece 30 are in abutment. Based on this, when the limiting portion 21 and the driving piece 30 are in abutment, the risk of the driving piece 30 loosening in the non-adjustment state can be reduced based on the friction, so that the risk of the deformation amount of the tuning portion 111 changing due to the loosening of the driving piece 30 can be reduced, the accuracy of the tuning effect and the stability of the resonator index can be improved. Especially, when there is no gap between the limiting portion 21 and the driving piece 30 and they are always in abutment, the driving piece 30 can keep stable and stable during rotation due to the existence of friction, so that the rotation stability and rotation stroke controllability of the driving piece 30 can be improved, the excessive rotation of the driving piece 30 can be reduced, and the controllability and stability of the tuning operation can be improved.

[0101] Please refer to FIG. 2, in some embodiments of the present application, the side of the driving member 30 towards the fixed part 112 has a rough area.

[0102] It should be noted that the side of the driving member 30 towards the fixed part 112, especially the area of the side used for abutting against the fixed part 112, has a rough area. In a possible implementation, the rough area of the driving member 30 has already abutted against the fixed part 112 in a natural state, so that the driving member 30 and the fixed part 112 always have a large friction force based on the rough area. In another possible implementation, there is a gap between the driving member 30 and the fixed part 112 in a natural state, the driving member 30 can be idling in the tuning process and move in the direction of approaching the fixed part 112 to the state of “abutting against the fixed part 112”, at this time, the driving member 30 and the fixed part 112 can have a large friction force based on the rough area.

[0103] By adopting the above scheme, by providing a rough area on the side of the driving member 30 towards the fixed part 112, the driving member 30 and the fixed part 112 can have a large friction force based on the rough area in the case of abutting against each other. Based on this, in the case of abutting against each other, the driving member 30 and the fixed part 112 can reduce the risk of loosening in the non-adjusted state based on the friction force, so as to reduce the risk of changing the deformation amount of the tuning part 111 due to the loosening of the driving member 30, improve the accuracy of the tuning effect and the stability of the resonator index. Especially in the case of abutting against each other without a gap between the driving member 30 and the fixed part 112, due to the existence of the friction force, the driving member 30 can keep stable and steady during rotation, so as to improve the rotation stability and rotation stroke controllability of the driving member 30, reduce the situation of excessive rotation of the driving member 30, and improve the controllability and adjustment stability of the tuning operation.

[0104] Please refer to FIG. 2, in some embodiments of the present application, the side of the fixed part 112 towards the driving member 30 has a rough area.

[0105] It should be noted that the side of the fixed part 112 towards the driving member 30, especially the area of the side used for abutting against the driving member 30, has a rough area. In a possible implementation, the rough area of the fixed part 112 has already abutted against the driving member 30 in a natural state, so that the fixed part 112 and the driving member 30 always have a large friction force based on the rough area. In another possible implementation, there is a gap between the fixed part 112 and the driving member 30 in a natural state, the driving member 30 can be idling in the tuning process and move in the direction of approaching the fixed part 112 to the state of “abutting against the fixed part 112”, at this time, the fixed part 112 and the driving member 30 can have a large friction force based on the rough area.

[0106] By adopting the above scheme, by arranging the rough area on the side of the fixing portion 112 facing the driving member 30, the friction between the fixing portion 112 and the driving member 30 can be increased based on the rough area when the fixing portion 112 and the driving member 30 are in abutment. Based on this, when the fixing portion 112 and the driving member 30 are in abutment, the risk of the driving member 30 loosening in the non-adjustment state can be reduced based on the friction, so that the risk of the deformation amount of the tuning portion 111 changing due to the loosening of the driving member 30 can be reduced, the accuracy of the tuning effect and the stability of the resonator index can be improved. Especially, when there is no gap between the fixing portion 112 and the driving member 30 and they are always in abutment, due to the existence of the friction, the driving member 30 can keep stable and steady during rotation, so that the rotation stability and the rotation stroke controllability of the driving member 30 can be improved, the situation of excessive rotation of the driving member 30 can be reduced, and the controllability and the adjustment stability of the tuning operation can be improved.

[0107] Please refer to FIG. 2, in some embodiments of the present application, the distance between the limiting portion 21 and the fixing portion 112 is equal to or less than the thickness of the driving member 30.

[0108] It should be noted that the distance between the limiting portion 21 and the fixing portion 112 is equal to the thickness of the driving member 30, so that the driving member 30 is fitted between the limiting portion 21 and the fixing portion 112 with zero clearance. Or, the distance between the limiting portion 21 and the fixing portion 112 is slightly less than the thickness of the driving member 30, so that the driving member 30 is fitted between the limiting portion 21 and the fixing portion 112 with interference.

[0109] By adopting the above scheme, the driving piece 30 can be in zero-gap fit or interference fit between the limiting portion 21 and the fixing portion 112. Based on this, no matter in the natural state, the rotation adjustment state of the driving piece 30, or the non-adjustment state of the driving piece 30, the limiting portion 21, the driving piece 30, and the fixing portion 112 abut in sequence and generate frictional force, so that the driving piece 30 is not easy to rotate by itself and is not easy to loosen, thereby reducing the risk of loosening of the driving piece 30 in the non-adjustment state, reducing the risk of change of the deformation amount of the tuning portion 111 caused by loosening of the driving piece 30, and improving the accuracy of the tuning effect and the stability of the resonator index. Moreover, compared with the scheme that the driving piece 30 is in gap fit between the limiting portion 21 and the fixing portion 112, the embodiment can completely limit the axial movement of the driving piece 30 based on the limiting portion 21 and the fixing portion 112, can utilize the rotational resistance provided by mutual friction to make the driving piece 30 more stable during rotation, not easy to loosen, and not to idle, thereby enabling the driving piece 30 to stably drive the tuning portion 111 to deform bidirectionally, improving the rotation stability and rotation stroke controllability of the driving piece 30, reducing the excessive rotation of the driving piece 30, and improving the controllability, adjustment stability, and adjustment continuity of the tuning operation. Moreover, the friction piece 60 can be omitted between the limiting portion 21 and the driving piece 30 and between the driving piece 30 and the fixing portion 112, thereby reducing the number of parts. Moreover, since the driving piece 30 is subjected to both the rotational resistance provided by friction and the clamping force of the limiting portion 21 and the fixing portion 112, the rotation and axial movement of the driving piece 30 can be completely limited when the operator does not apply force to the driving piece 30. Therefore, when the driving piece 30 is in the “tuning portion 111 deformation amount adjustment completion debugging completion state”, the driving piece 30 will not rotate due to the rebound force generated by the tuning portion 111, and will not move axially due to the rebound force generated by the tuning portion 111, that is, by preventing the rotation and axial movement of the driving piece 30, the rebound of the tuning portion 111 after deformation can be prevented, the driving piece 30 can always maintain the force application state to the adjusting piece 40, the adjusting piece 40 can always maintain the force application state to the tuning portion 111, the rebound of the tuning portion 111 after debugging completion due to the lack of continuous force can be prevented, the deformation amount of the tuning portion 111 can always be stably maintained in the debugging completion state, and the accuracy of the tuning effect and the stability of the resonator index can be improved.

[0110] The embodiment is suitable for being combined with the related embodiment of the “rough area”.

[0111] Of course, in other embodiments, the spacing between the limiting portion 21 and the fixing portion 112 can be greater than the thickness of the driving member 30, so that the driving member 30 is clearance-fitted between the limiting portion 21 and the fixing portion 112. In this case, the driving member 30 can idle and undergo small-stroke axial movement between the limiting portion 21 and the fixing portion 112 during the tuning process, the limiting portion 21 can exert a limiting effect and generate a contact friction force when the driving member 30 abuts against it, and the fixing portion 112 can exert a limiting effect and generate a contact friction force when the driving member 30 abuts against it.

[0112] Referring to FIGS. 2, 7, 8, and 9, in some embodiments of the present application, the fixing portion 112 includes, in order from the tuning portion 111 outward, a first ring portion 1121, a second ring portion 1122, and a third ring portion 1123, and the first ring portion 1121 cooperates with the limiting portion 21 to limit the driving member 30. At the side close to the limiting member 20, at least one of the first ring portion 1121 and the third ring portion 1123 protrudes from the second ring portion 1122 and forms a stepped groove 1124 together with the second ring portion 1122. The limiting member 20 is partially installed in the stepped groove 1124 and is fixedly connected with the inner wall of the stepped groove 1124.

[0113] It should be noted that the fixing portion 112 includes the first ring portion 1121, the second ring portion 1122, and the third ring portion 1123, the first ring portion 1121 surrounds the outer periphery of the tuning portion 111, and the first ring portion 1121, the second ring portion 1122, and the third ring portion 1123 are sequentially and concentrically arranged from inside to outside.

[0114] As shown in FIG. 9, in one possible implementation, at the side close to the limiting member 20 (i.e., the side away from the resonant cavity 13), only the first ring portion 1121 can protrude from the second ring portion 1122 (i.e., the side of the first ring portion 1121 protruding from the second ring portion 1122 close to the limiting member 20), so that the first ring portion 1121 and the second ring portion 1122 are in a stepped shape, and the first ring portion 1121 and the second ring portion 1122 form a stepped groove 1124, in which case, the side of the second ring portion 1122 close to the limiting member 20 forms the groove bottom of the stepped groove 1124, and the annular surface of the first ring portion 1121 close to the second ring portion 1122 forms the groove wall of the stepped groove 1124.

[0115] As shown in FIG. 7 and FIG. 8, in another possible implementation, on the side close to the limiting piece 20, only the third ring part 1123 can protrude from the second ring part 1122 (i.e., the third ring part 1123 protrudes from the side of the second ring part 1122 close to the limiting piece 20), so that the third ring part 1123 and the second ring part 1122 are in a stepped shape, and the third ring part 1123 and the second ring part 1122 together enclose the stepped groove 1124. In this case, the side of the second ring part 1122 close to the limiting piece 20 forms the groove bottom of the stepped groove 1124, and the ring surface of the third ring part 1123 close to the second ring part 1122 forms the groove wall of the stepped groove 1124.

[0116] As shown in FIG. 2, in another possible implementation, on the side close to the limiting piece 20, both the first ring part 1121 and the third ring part 1123 can protrude from the second ring part 1122, so that the first ring part 1121 and the second ring part 1122 are in a stepped shape, and the third ring part 1123 and the second ring part 1122 are also in a stepped shape, and the third ring part 1123, the second ring part 1122, and the first ring part 1121 together enclose the stepped groove 1124. In this case, the side of the second ring part 1122 close to the limiting piece 20 forms the groove bottom of the stepped groove 1124, and the ring surface of the first ring part 1121 close to the second ring part 1122 and the ring surface of the third ring part 1123 close to the second ring part 1122 form the opposite groove walls of the stepped groove 1124.

[0117] The limiting piece 20 is partially mounted in the stepped groove 1124. The limiting piece 20 is connected and fixed with the inner wall of the stepped groove 1124. The inner wall of the stepped groove 1124 includes the groove wall of the stepped groove 1124 and the groove bottom of the stepped groove 1124. The connection and fixing mode of the limiting piece 20 with the inner wall of the stepped groove 1124 can adopt, but is not limited to, crimping, insertion, welding, bonding, threaded connection, clamping, and the like.

[0118] By adopting the above scheme, the fixing part 112 can be provided with the stepped groove 1124 to positionally mount and connect and fix the limiting piece 20. Based on this, the convenience and reliability of the split connection between the fixing part 112 and the limiting piece 20 can be improved. Moreover, compared with the scheme of “the limiting piece 20 reserving sufficient radial dimension to be directly fixed to the outer surface of the fixing part 112 facing the limiting piece 20”, the present embodiment can transfer the connection area between the fixing part 112 and the limiting piece 20 from the outer surface of the fixing part 112 to the inner wall of the stepped groove 1124, so that the radial dimension of the limiting piece 20 can be reduced without compressing the connection area between the fixing part 112 and the limiting piece 20, and the area ratio of the limiting piece 20 on the outer surface of the cover plate 11 can be reduced, thereby being beneficial to the miniaturization and light weight of the resonator.

[0119] Of course, in other embodiments, the fixed portion 112 can not be provided with the stepped groove 1124, and the side of the limiting piece 20 facing the cover plate 11 can be directly fixed to the side of the fixed portion 112 facing the limiting piece 20. For example, the limiting piece 20 can be a flat plate or a plate with steps, and the edge of the limiting piece 20 can be connected and fixed to the fixed portion 112 by screw connection, welding (such as laser welding), point gluing, or the like. Specifically, near the side of the limiting piece 20, when the driving piece 30 does not protrude from the fixed portion 112, the limiting piece 20 can be a flat plate structure; near the side of the limiting piece 20, when the driving piece 30 protrudes from the fixed portion 112, the limiting piece 20 can be a plate structure with steps in the middle, the protruding part of the limiting piece 20 is correspondingly arranged with the driving piece 30, the edge of the limiting piece 20 is lower than the protruding part, and the edge of the limiting piece 20 is fixed to the side of the fixed portion 112 facing the limiting piece 20.

[0120] Referring to FIGS. 2, 7, 8, and 9, in some embodiments of the present application, the limiting piece 20 includes a mounting portion 22 connected to the outer periphery of the limiting portion 21 and bent to be arranged near the side of the driving piece 30, and the mounting portion 22 is mounted in the stepped groove 1124 and fixed to the inner wall of the stepped groove 1124.

[0121] It should be noted that the limiting piece 20 includes the limiting portion 21 and the mounting portion 22, the mounting portion 22 is bent to be connected to the outer periphery of the limiting portion 21, and the mounting portion 22 is bent to be arranged near the side of the driving piece 30 relative to the limiting portion 21, so that the limiting piece 20 is in a cap shape with a turned edge.

[0122] The mounting portion 22 can be inserted and mounted in the stepped groove 1124 of the fixed portion 112. The mounting portion 22 is fixed to the inner wall of the stepped groove 1124, which can be that the outer peripheral wall of the mounting portion 22 is fixed to the groove wall of the stepped groove 1124, or that the inner peripheral wall of the mounting portion 22 is fixed to the groove wall of the stepped groove 1124, or that the end face of the mounting portion 22 away from the limiting portion 21 is fixed to the groove bottom of the stepped groove 1124.

[0123] By adopting the above scheme, the limiting piece 20 can be inserted and mounted in the stepped groove 1124 of the fixed portion 112 through the mounting portion 22 bent to be arranged near the side of the driving piece 30 relative to the limiting portion 21, and fixed to the inner wall of the stepped groove 1124. Based on this, the structure of the limiting piece 20 can be optimized, the connection convenience of the limiting piece 20 and the stepped groove 1124 of the fixed portion 112 can be improved, which is conducive to increasing the connection area of the limiting piece 20 and the stepped groove 1124, and is conducive to enhancing the connection strength, connection reliability, and connection stability of the limiting piece 20 and the stepped groove 1124. Moreover, it is also conducive to reducing the thickness of the cover plate 11, thereby being conducive to the miniaturization and light weight of the resonator.

[0124] Please refer to FIG. 2, FIG. 7, FIG. 8, FIG. 9, in some embodiments of the present application, the inner circumferential wall of the mounting portion 22 is spaced apart from the outer circumferential wall of the driving member 30.

[0125] In the case where the mounting portion 22 is installed in the stepped groove 1124, by spacing apart the inner circumferential wall of the mounting portion 22 from the outer circumferential wall of the driving member 30, the risk of assembly interference, excessive assembly between the mounting portion 22 and the driving member 30 can be reduced, the interference on the outer periphery of the driving member 30 can be reduced, the risk of rotation of the driving member 30 being interfered by the mounting portion 22 can be reduced, a certain range of machining errors and assembly errors between the mounting portion 22 and the driving member 30 can be allowed, and the assembly convenience and assembly yield between the limiting member 20 and the driving member 30 can be improved.

[0126] Of course, in other embodiments, if the machining precision of the driving member 30 (especially the outer circumferential wall of the driving member 30) is high, the machining precision of the mounting portion 22 (especially the inner circumferential wall of the mounting portion 22) is high, and the fillet transition between the mounting portion 22 and the limiting portion 21 is omitted, the inner circumferential wall of the mounting portion 22 and the outer circumferential wall of the driving member 30 can be provided with zero clearance.

[0127] Please refer to FIG. 2, FIG. 7, FIG. 8, in some embodiments of the present application, on the side close to the limiting member 20, the third ring portion 1123 protrudes from the second ring portion 1122 and forms a stepped groove 1124 together with the second ring portion 1122. The outer circumferential wall of the mounting portion 22 is connected and fixed with the third ring portion 1123.

[0128] It should be noted that on the side close to the limiting member 20, the third ring portion 1123 protrudes from the second ring portion 1122, so that the third ring portion 1123 and the second ring portion 1122 are in a stepped shape, so that the third ring portion 1123 and the second ring portion 1122 form a stepped groove 1124, the side surface of the second ring portion 1122 close to the limiting member 20 forms the groove bottom of the stepped groove 1124, the annular surface of the third ring portion 1123 close to the second ring portion 1122 forms the groove wall of the stepped groove 1124, and the edge of the annular surface of the third ring portion 1123 away from the second ring portion 1122 forms the groove opening of the stepped groove 1124. In this case, the limiting member 20 can be inserted and installed in the stepped groove 1124 through the mounting portion 22 which is arranged to be bent towards the side close to the driving member 30 relative to the limiting portion 21, and the outer circumferential wall of the mounting portion 22 can be connected and fixed with the groove wall of the stepped groove 1124 (i.e. the annular surface of the third ring portion 1123 close to the second ring portion 1122).

[0129] By adopting the above scheme, the fixed portion 112 can form a stepped groove 1124 by the third ring portion 1123 and the second ring portion 1122, so that the mounting portion 22 of the limiting piece 20 is inserted and installed in the stepped groove 1124, and the third ring portion 1123 close to the second ring portion 1122 can form a groove wall of the stepped groove 1124 to be connected and fixed with the outer peripheral wall of the mounting portion 22. Based on this, the connection convenience and reliability of the stepped groove 1124 and the mounting portion 22 can be improved. Moreover, the connection area of the stepped groove 1124 and the mounting portion 22 can be avoided from the first ring portion 1121, and the third ring portion 1123 can be designed to protrude from, flush with, or recessed from the first ring portion 1121 on the side close to the limiting piece 20, and the thickness of the third ring portion 1123, the connection area between the stepped groove 1124 and the mounting portion 22, and the shape of the fixed portion 112 can be flexibly designed. In particular, on the side close to the limiting piece 20, the third ring portion 1123 can be designed to protrude from the first ring portion 1121 to increase the connection area between the stepped groove 1124 and the mounting portion 22, so as to enhance the connection strength, reliability and stability between the stepped groove 1124 and the mounting portion 22.

[0130] Please refer to FIG. 2, in some embodiments of the present application, on the side close to the limiting piece 20, the second ring portion 1122 is recessed from the first ring portion 1121. That is, on the side close to the limiting piece 20, the side of the second ring portion 1122 close to the limiting piece 20 is lower than the side of the first ring portion 1121 facing the driving piece 30. In other words, the first ring portion 1121 protrudes from the side of the second ring portion 1122 close to the limiting piece 20.

[0131] By adopting the above scheme, in the case that the third ring portion 1123 and the second ring portion 1122 form the stepped groove 1124, and the outer peripheral wall of the mounting portion 22 is connected and fixed with the third ring portion 1123, by recessing the second ring portion 1122 from the first ring portion 1121 on the side close to the limiting piece 20, the groove depth of the stepped groove 1124 formed by the third ring portion 1123 and the second ring portion 1122 can be increased accordingly, and the connection area between the stepped groove 1124 and the mounting portion 22 can be increased, so as to enhance the connection strength, reliability and stability between the stepped groove 1124 and the mounting portion 22. Moreover, the space formed by the thickness difference between the third ring portion 1123 and the first ring portion 1121 can be fully utilized to arrange the driving piece 30, and the space of the cover plate 11 can be fully utilized, so as to facilitate the compression of the height of the resonator, and facilitate the miniaturization and light weight of the resonator.

[0132] Please refer to FIG. 7, in some embodiments of the present application, on the side close to the limiting member 20, the second ring part 1122 is flush with the first ring part 1121. That is, on the side close to the limiting member 20, the side of the second ring part 1122 close to the limiting member 20 is flush with the side of the first ring part 1121 facing the driving member 30.

[0133] By adopting the above scheme, in the case that the third ring part 1123 and the second ring part 1122 form the stepped groove 1124, and the outer peripheral wall of the mounting part 22 is fixedly connected with the third ring part 1123, by making the second ring part 1122 flush with the first ring part 1121 on the side close to the limiting member 20, the extension length of the mounting part 22 in the thickness direction of the driving member 30 can be promoted to substantially correspond to the thickness of the driving member 30, and the combined thickness of the driving member 30 and the limiting member 20 can be compressed, thereby facilitating the compression of the height of the resonator, and facilitating the miniaturization and light weight of the resonator.

[0134] Of course, as shown in FIG. 8, in other embodiments, on the side close to the limiting member 20, the second ring part 1122 can protrude from the first ring part 1121, that is, the side of the second ring part 1122 close to the limiting member 20 is higher than the side of the first ring part 1121 facing the driving member 30.

[0135] Please refer to FIG. 9, in some embodiments of the present application, on the side close to the limiting member 20, the first ring part 1121 protrudes from the second ring part 1122 and forms the stepped groove 1124 with the second ring part 1122. The inner peripheral wall of the mounting part 22 is fixedly connected with the first ring part 1121.

[0136] It should be noted that on the side close to the limiting member 20, the first ring part 1121 protrudes from the second ring part 1122, so that the first ring part 1121 and the second ring part 1122 are in a stepped shape, so that the first ring part 1121 and the second ring part 1122 form the stepped groove 1124, the side of the second ring part 1122 close to the limiting member 20 forms the groove bottom of the stepped groove 1124, the annular surface of the first ring part 1121 close to the second ring part 1122 forms the groove wall of the stepped groove 1124, and the edge of the first ring part 1121 away from the second ring part 1122 forms the groove opening of the stepped groove 1124. In this case, the limiting member 20 can be inserted and mounted in the stepped groove 1124 through the mounting part 22 arranged to be bent towards the side close to the driving member 30 relative to the limiting part 21, and the inner peripheral wall of the mounting part 22 can be fixedly connected with the groove wall of the stepped groove 1124 (that is, the annular surface of the first ring part 1121 close to the second ring part 1122).

[0137] By adopting the above scheme, the fixed part 112 can form a stepped groove 1124 by the first ring part 1121 and the second ring part 1122, so that the mounting part 22 of the limiting part 20 is inserted and installed in the stepped groove 1124, and the first ring part 1121 close to the second ring part 1122 can form the groove wall of the stepped groove 1124 to be connected and fixed with the inner circumferential wall of the mounting part 22. Based on this, the connection convenience and reliability of the stepped groove 1124 and the mounting part 22 can be improved. Moreover, the connection area of the mounting part 22 and the stepped groove 1124 is close to the first ring part 1121 and avoids the third ring part 1123, which is beneficial to reduce the radial size of the limiting part 20 and the radial size of the cover plate 11, thereby facilitating the miniaturization and light weight of the resonator.

[0138] Please refer to FIG. 9, in some embodiments of the present application, on the side close to the limiting part 20, the third ring part 1123 is flush with the second ring part 1122. That is, on the side close to the limiting part 20, the third ring part 1123 is flush with the side of the second ring part 1122 close to the limiting part 20.

[0139] In the case that the first ring part 1121 and the second ring part 1122 form the stepped groove 1124, and the inner circumferential wall of the mounting part 22 is connected and fixed with the first ring part 1121, the connection area of the mounting part 22 and the stepped groove 1124 is irrelevant to the third ring part 1123. Based on this, by making the third ring part 1123 flush with the second ring part 1122 on the side close to the limiting part 20, the thickness of the third ring part 1123 can be thinned, and the weight of the cover plate 11 can be reduced, thereby facilitating the miniaturization and light weight of the resonator.

[0140] Please refer to FIG. 10, in some embodiments of the present application, on the side close to the limiting part 20, the third ring part 1123 protrudes from the second ring part 1122 and forms the stepped groove 1124 with the second ring part 1122, and the outer circumferential wall of the limiting part 20 is connected and fixed with the third ring part 1123. The limiting part 20 is a flat plate type plate structure.

[0141] It should be noted that on the side close to the limiting part 20, the third ring part 1123 protrudes from the second ring part 1122, so that the third ring part 1123 and the second ring part 1122 are in a stepped shape, so that the third ring part 1123 and the second ring part 1122 form the stepped groove 1124, the side of the second ring part 1122 close to the limiting part 20 forms the groove bottom of the stepped groove 1124, the ring surface of the third ring part 1123 close to the second ring part 1122 forms the groove wall of the stepped groove 1124, and the edge of the ring surface of the third ring part 1123 away from the second ring part 1122 forms the groove opening of the stepped groove 1124.

[0142] In this case, the limiting piece 20 can be a flat plate structure, i.e., the limiting piece 20 only includes the limiting portion 21 and does not include the mounting portion 22. The limiting portion 21, which is beyond the driving piece 30 in the circumferential direction, can be laid flat and mounted in the stepped groove 1124, and the outer circumferential wall of the limiting portion 21 can be connected and fixed with the groove wall of the stepped groove 1124, i.e., the annular surface of the third ring portion 1123 close to the second ring portion 1122.

[0143] By adopting the above scheme, the fixing portion 112 can form the stepped groove 1124 by the third ring portion 1123 and the second ring portion 1122, so as to lay flat and mount the limiting piece 20 in the form of a flat plate in the stepped groove 1124, and the third ring portion 1123 close to the second ring portion 1122 can form the groove wall of the stepped groove 1124, so as to be connected and fixed with the outer circumferential wall of the limiting portion 21. Based on this, the structure of the limiting piece 20 can be simplified, the processing convenience and precision of the limiting piece 20 can be improved, and the connection convenience, efficiency and reliability of the limiting piece 20 and the stepped groove 1124 can be improved. Moreover, compared with the next embodiment, the present embodiment is beneficial to reducing the overall thickness of the cover plate 11 and the limiting piece 20, thereby being beneficial to the miniaturization and light weight of the resonator.

[0144] Please refer to FIG. 11. In some embodiments of the present application, on the side close to the limiting piece 20, the third ring portion 1123 protrudes from the second ring portion 1122 and forms the stepped groove 1124 together with the second ring portion 1122, and the outer circumferential wall of the limiting piece 20 is connected and fixed with the third ring portion 1123. The limiting piece 20 includes the mounting portion 22, which is connected to the outer circumference of the limiting portion 21 and is arranged to be bent away from the driving piece 30.

[0145] It should be noted that, on the side close to the limiting piece 20, the third ring portion 1123 protrudes from the second ring portion 1122, so that the third ring portion 1123 and the second ring portion 1122 are in a stepped shape, the third ring portion 1123 and the second ring portion 1122 form the stepped groove 1124, the side surface of the second ring portion 1122 close to the limiting piece 20 forms the groove bottom of the stepped groove 1124, the annular surface of the third ring portion 1123 close to the second ring portion 1122 forms the groove wall of the stepped groove 1124, and the edge of the annular surface of the third ring portion 1123 away from the second ring portion 1122 forms the groove opening of the stepped groove 1124.

[0146] In this case, the limiting piece 20 can include the limiting portion 21 and the mounting portion 22, the mounting portion 22 is connected to the outer circumference of the limiting portion 21 by bending, the mounting portion 22 is arranged to be bent away from the driving piece 30 relative to the limiting portion 21, so that the limiting piece 20 is in the form of a cap with a flange. The mounting portion 22 of the limiting piece 20 can be embedded and mounted in the stepped groove 1124, and the outer circumferential wall of the mounting portion 22 can be connected and fixed with the groove wall of the stepped groove 1124, i.e., the annular surface of the third ring portion 1123 close to the second ring portion 1122.

[0147] By adopting the above scheme, the fixing portion 112 can form the stepped groove 1124 by the third ring portion 1123 and the second ring portion 1122, so that the mounting portion 22 of the limiting piece 20 is embedded and mounted in the stepped groove 1124, and the third ring portion 1123 can form the groove wall of the stepped groove 1124 close to the ring surface of the second ring portion 1122, so as to be connected and fixed with the outer peripheral wall of the mounting portion 22. Based on this, the connection convenience, connection efficiency and connection reliability of the limiting piece 20 and the stepped groove 1124 can be improved. Moreover, compared with the previous embodiment, the connection area between the stepped groove 1124 and the limiting piece 20 can be increased, so that the connection strength, connection reliability and connection stability between the stepped groove 1124 and the limiting piece 20 can be enhanced.

[0148] Please refer to FIG. 2, FIG. 9, FIG. 10 and FIG. 11. In some embodiments of the present application, the limiting piece 20 and the groove wall of the stepped groove 1124 are in interference press-fit.

[0149] It should be noted that, as shown in FIG. 2, FIG. 10 and FIG. 11, in one possible implementation, the third ring portion 1123 protrudes from the second ring portion 1122 and forms the stepped groove 1124 with the second ring portion 1122 on the side close to the limiting piece 20, the limiting piece 20 can be in the form of a flat plate or a cap with a flange, and the outer peripheral wall of the limiting piece 20 is in interference press-fit with the groove wall of the stepped groove 1124 (i.e. the ring surface of the third ring portion 1123 close to the second ring portion 1122), so as to be connected and fixed.

[0150] As shown in FIG. 9, in another possible implementation, the first ring portion 1121 protrudes from the second ring portion 1122 and forms the stepped groove 1124 with the second ring portion 1122 on the side close to the limiting piece 20, the limiting piece 20 is in the form of a cap with a flange, and has a mounting portion 22 which is arranged to be bent towards the side close to the driving piece 30 relative to the limiting portion 21, and the inner peripheral wall of the mounting portion 22 is in interference press-fit with the groove wall of the stepped groove 1124 (i.e. the ring surface of the first ring portion 1121 close to the second ring portion 1122), so as to be connected and fixed.

[0151] By adopting the above scheme, the limiting piece 20 and the groove wall of the stepped groove 1124 can be in interference press-fit, so as to be connected and fixed, and the installation position and installation state of the limiting piece 20 relative to the stepped groove 1124 are stabilized. Based on this, the connection and fixation of the limiting piece 20 and the stepped groove 1124 can be conveniently and quickly realized, and the connection convenience, connection efficiency and connection reliability between the limiting piece 20 and the fixing portion 112 can be improved.

[0152] In some embodiments, the side surface of the limiting piece 20 used for interference press-fitting with the groove wall of the stepped groove 1124 can be knurled to enhance the connection strength, connection reliability and connection stability of the limiting piece 20 and the stepped groove 1124.

[0153] In some embodiments, the groove wall of the stepped groove 1124 can be knurled to enhance the connection strength, connection reliability and connection stability of the limiting piece 20 and the stepped groove 1124.

[0154] Please refer to FIG. 12, in some embodiments of the present application, the groove bottom of the stepped groove 1124 is provided with a chip groove 1125. That is, the second ring part 1122 is provided with the chip groove 1125 near the side surface of the limiting piece 20.

[0155] By adopting the above scheme, the chip groove 1125 can be arranged at the groove bottom of the stepped groove 1124 to accommodate the chip generated during the interference press-fitting of the limiting piece 20 with the groove wall of the stepped groove 1124, so as to improve the assembly yield and assembly efficiency of the limiting piece 20 and the stepped groove 1124.

[0156] Please refer to FIG. 1 and FIG. 2, in some embodiments of the present application, the limiting piece 20 is welded with the fixed part 112. The welding can be laser welding, ultrasonic welding, etc. The continuous welding can be used to fix the limiting piece 20 and the fixed part 112 together.

[0157] By adopting the above scheme, the limiting piece 20 formed in two parts can be conveniently, quickly, reliably and firmly connected and fixed to the fixed part 112 of the cover plate 11 by welding, so as to improve the connection convenience, connection reliability and connection stability between the limiting piece 20 and the fixed part 112.

[0158] Please refer to FIG. 2, FIG. 9, FIG. 10 and FIG. 11, in some embodiments of the present application, the limiting piece 20 is interference press-fitted with the groove wall of the stepped groove 1124, and the limiting piece 20 and the fixed part 112 are also fixed by welding. That is, the edge welding (such as edge laser welding) can be performed at the connection between the stepped groove 1124 and the limiting piece 20 on the basis of the interference press-fitting. In this way, the interference press-fitting and welding can be combined to comprehensively improve the connection convenience, connection reliability and connection stability between the limiting piece 20 and the fixed part 112.

[0159] Of course, in other embodiments, the limiting piece 20 and the fixed part 112 can be connected and fixed by using the connection modes such as threaded connection, clamping, adhesion, etc.

[0160] In some embodiments of the present application, the adjusting piece 40 is press-fitted, riveted, bonded or welded with the tuning part 111. The bonding can be by means of dispensing. The welding can be laser welding, ultrasonic welding, etc.

[0161] It should be noted that the connecting manner between the adjusting piece 40 and the tuning part 111 can be one or a combination of press-fitting, riveting, bonding or welding. For example, the adjusting piece 40 and the tuning part 111 can be connected by only one of the press-fitting, riveting, bonding or welding. For another example, the adjusting piece 40 and the tuning part 111 can be simultaneously press-fitted and welded, or the adjusting piece 40 and the tuning part 111 can be simultaneously bonded and welded.

[0162] By adopting the above scheme, the adjusting piece 40 and the tuning part 111 can be connected and fixed by means of press-fitting, riveting, bonding or welding, so that the connecting convenience, efficiency and reliability between the adjusting piece 40 and the tuning part 111 can be improved.

[0163] Please refer to FIG. 1, FIG. 2 and FIG. 3. In some embodiments of the present application, the adjusting piece 40 comprises a main body part 41 and a connecting part 42 connected to one end of the main body part 41 close to the tuning part 111. The projection of the connecting part 42 covers the projection of the main body part 41 along the axial direction of the adjusting piece 40.

[0164] It should be noted that the adjusting piece 40 comprises the main body part 41 and the connecting part 42. The main body part 41 is in a cylindrical shape and is threadedly connected to the threaded hole 31 of the driving piece 30. The connecting part 42 is integrally connected (or separately connected) to one end of the main body part 41 close to the tuning part 111. The connecting part 42 protrudes from the main body part 41 along the circumferential direction of the adjusting piece 40. The projection of the connecting part 42 covers the projection of the main body part 41 along the axial direction of the adjusting piece 40, i.e. the projection of the main body part 41 falls within the projection of the connecting part 42. The connecting part 42 can be in a circular shape, a polygonal shape, etc.

[0165] By adopting the above scheme, the adjusting piece 40 can be threadedly connected with the driving piece 30 through the main body part 41 and the threaded hole 31, and can be connected and fixed with the tuning part 111 through the connecting part 42 connected to one end of the main body part 41 close to the tuning part 111 and having a large projection area. Therefore, the connecting area between the adjusting piece 40 and the tuning part 111 can be increased, so that the connecting strength, reliability and stability between the adjusting piece 40 and the tuning part 111 can be improved.

[0166] In some embodiments, the connecting portion 42 is adhesively bonded and laser welded with the tuning portion 111. In this way, the automatic assembly between the adjusting member 40 and the tuning portion 111 is facilitated, which is suitable for the batch production and assembly of the resonator, and the connection convenience, connection efficiency and connection stability between the adjusting member 40 and the tuning portion 111 can be improved. Of course, in other embodiments, the connecting portion 42 and the tuning portion 111 can be connected in other ways, such as crimping, clamping, riveting, fastener connection, integral connection, etc.

[0167] Of course, in other embodiments, the adjusting member 40 can only be provided with the main body portion 41 without the connecting portion 42, and the end of the main body portion 41 close to the tuning portion 111 is connected with the tuning portion 111. For example, the tuning portion 111 is provided with a connecting boss on the side facing the limiting portion 21, the connecting boss can be integrally connected with the tuning portion 111 or separately connected with the tuning portion 111, a connecting groove is formed on the connecting boss, and the end of the main body portion 41 close to the tuning portion 111 is connected with the connecting groove of the connecting boss. By providing the connecting boss and the connecting groove, the connection area between the adjusting member 40 and the tuning portion 111 can be increased, and the connection strength, connection reliability and connection stability between the adjusting member 40 and the tuning portion 111 can be improved.

[0168] Of course, the adjusting member 40 and the tuning portion 111 can also not be provided with the structure for increasing the connection area between the adjusting member 40 and the tuning portion 111, as long as the adjusting member 40 and the tuning portion 111 are fixedly connected.

[0169] Please refer to FIG. 1, FIG. 2 and FIG. 3. In some embodiments of the present application, the driving member 30 comprises a driving body 32 and an extension 33 protruding from the driving body 32, and the threaded hole 31 extends through the extension 33 and the driving body 32.

[0170] It should be noted that the driving member 30 comprises the driving body 32 and the extension 33. The extension 33 protrudes from the driving body 32. In the thickness direction of the driving member 30, the threaded hole 31 extends through the extension 33 and the driving body 32.

[0171] As shown in FIG. 2, in some embodiments, the extension 33 can protrude from the side of the driving body 32 away from the tuning portion 111. In this way, the extension 33 can occupy less space in the cavity 113 formed by the driving member 30, the fixing portion 112 and the tuning portion 111, so as to reserve sufficient deformation space for the tuning portion 111 to deform in the direction close to the limiting portion 21, expand the deformable amount of the tuning portion 111 to deform in the direction close to the limiting portion 21, and expand the adjustable range of the resonant frequency. Of course, in other embodiments, the extension 33 can protrude from the side of the driving body 32 facing the tuning portion 111, so as to reduce the height of the resonator.

[0172] The extension 33 can be integrally formed with the driving body 32, for example, the linear base material is extruded to form the extension 33 by cold heading process, or the plate-shaped base material is punched to form the extension 33 by punching process, or the extension 33 is formed by machining. The extension 33 can also be connected with the driving body 32 separately, for example, the extension 33 can be a nut, and the nut can be fixed on the driving body 32 by welding, gluing and the like.

[0173] By adopting the above scheme, the depth of the threaded hole 31 can be increased by providing the driving member 30 with the extension 33 and making the threaded hole 31 extend through the extension 33 and the driving body 32, and the connection area of the adjusting member 40 with the threaded hole 31 can be increased, so that the moving stability of the adjusting member 40 in the threaded hole 31 can be improved.

[0174] Please refer to FIG. 1, FIG. 2 and FIG. 3, in some embodiments of the present application, the driving member 30 includes an operation portion 34 exposed in the exposure hole 211. The operation portion 34 can be, but is not limited to, a through hole, a boss and the like.

[0175] By adopting the above scheme, the hand or external tool can drive the driving member 30 to rotate conveniently and quickly through the operation portion 34 exposed in the exposure hole 211, so that the operation convenience of the rotation of the driving member 30 can be improved.

[0176] Of course, in other embodiments, the driving member 30 can also not have the operation portion 34, and the operator can apply force to the driving member 30 by using a suction cup, the friction of the hand, a tool with large friction (for example, the tool end is provided with a rough rubber part), a tool with adhesion (for example, the tool end is provided with an adhesive), and the like to drive the driving member 30 to rotate.

[0177] Please refer to FIG. 1, FIG. 2 and FIG. 3, in some embodiments of the present application, the driving member 30 includes a driving body 32 and an extension 33 protruding from the driving body 32, the threaded hole 31 extends through the extension 33 and the driving body 32, the adjusting member 40 and the extension 33 are exposed in the exposure hole 211, and the operation portion 34 is arranged on the outer peripheral wall of the extension 33.

[0178] It should be noted that the driving member 30 includes the driving body 32, the extension 33 and the operation portion 34. The extension 33 protrudes from the side of the driving body 32 away from the tuning portion 111 and is exposed in the exposure hole 211. In this case, the operation portion 34 can be arranged on the outer peripheral wall of the extension 33 to be exposed in the exposure hole 211. The outer peripheral wall of the extension 33 can be provided with a protrusion, a groove and the like to serve as the operation portion 34. As shown in FIG. 1, in some embodiments, the outer peripheral wall of the extension 33 can be provided with an outer hexagonal structure to serve as the operation portion 34.

[0179] By the above scheme, in the case that the extension part 33 is protruded from the side of the driving body 32 away from the tuning part 111 and exposed in the exposure hole 211, by arranging the operation part 34 on the outer peripheral wall of the extension part 33, the operation part 34 can also be exposed in the exposure hole 211, and the hand or external tool can conveniently and quickly drive the driving part 30 to rotate through the operation part 34, thereby improving the operation convenience of the rotation of the driving part 30. Moreover, the operation part 34 is directly formed on the outer peripheral wall of the extension part 33, which can also improve the design convenience and processing convenience of the operation part 34, simplify and optimize the structure of the driving part 30, and improve the processing convenience and structural reliability of the driving part 30. Moreover, the adjusting part 40 and the extension part 33 are exposed in the exposure hole 211, and the exposure hole 211 can also reserve space for the axial movement of the adjusting part 40.

[0180] Please refer to FIG. 1 and FIG. 13, in some embodiments of the present application, the annular groove 321 is arranged on the outer periphery of the extension part 33 of the driving body 32.

[0181] By the above scheme, in the case that the operation part 34 is arranged on the outer peripheral wall of the extension part 33, by recessing the annular groove 321 on the outer periphery of the extension part 33 of the driving body 32, the length of the operation part 34 can be increased along the thickness direction of the driving part 30, so that the hand or external tool can more conveniently hold or clamp the operation part 34, and the operation convenience of the rotation of the driving part 30 can be improved.

[0182] Of course, in other embodiments, in the case that the operation part 34 is arranged on the outer peripheral wall of the extension part 33, the annular groove 321 can not be arranged on the outer periphery of the extension part 33 of the driving body 32, so as to maintain the thickness of the driving body 32 and maintain and improve the structural strength of the driving body 32.

[0183] Please refer to FIG. 1 and FIG. 2, in some embodiments of the present application, the driving part 30 comprises the driving body 32 and the extension part 33 protruded from the driving body 32, the threaded hole 31 extends through the extension part 33 and the driving body 32, and the operation part 34 is arranged on the driving body 32.

[0184] It should be noted that the driving part 30 comprises the driving body 32, the extension part 33 and the operation part 34. The extension part 33 can be protruded from the side of the driving body 32 away from the tuning part 111, or the extension part 33 can be protruded from the side of the driving body 32 toward the tuning part 111. The operation part 34 can be arranged on the side of the driving body 32 away from the tuning part 111 and exposed in the exposure hole 211. The operation part 34 is arranged away from the extension part 33 and the threaded hole 31. For example, the operation part 34 can be one or more through holes, bosses or other structures arranged on the driving body 32.

[0185] By adopting the above scheme, by setting the operation part 34 on the side of the driving body 32 away from the tuning part 111 and exposing it in the exposure hole 211, the hand or external tool can conveniently and quickly drive the driving piece 30 to rotate through the operation part 34, so that the operation convenience of the rotation of the driving piece 30 can be improved.

[0186] Of course, in other embodiments, the driving piece 30 includes the driving body 32 and the operation part 34, but does not have the extension part 33, in which case the driving piece 30 can be a flat plate, the operation part 34 can be arranged at a position of the driving piece 30 not corresponding to the threaded hole 31, or the operation part 34 can be arranged at a position of the driving piece 30 corresponding to the threaded hole 31 but does not have an internal thread, or the operation part 34 can be arranged at a position of the driving piece 30 corresponding to the threaded hole 31 but the operation part 34 has a through hole capable of completely exposing the threaded hole 31.

[0187] Please refer to FIG. 1 and FIG. 2, in some embodiments of the present application, the adjusting piece 40 is an aluminum material piece, and the tuning part 111 is a soft aluminum alloy material piece.

[0188] By adopting the above scheme, the material of the adjusting piece 40 is aluminum, the material of the tuning part 111 is high-toughness soft aluminum alloy, and both the adjusting piece 40 and the tuning part 111 are made of aluminum alloy material, so that the adjusting piece 40 and the tuning part 111 can be reliably and stably connected and fixed.

[0189] This embodiment is particularly suitable for being combined with the embodiment of “welding the adjusting piece 40 and the tuning part 111”. Both the adjusting piece 40 and the tuning part 111 are made of aluminum-containing material, so that laser welding can be achieved between the adjusting piece 40 and the tuning part 111, and the welding effect and welding strength can be improved, and the connection efficiency, connection reliability and connection stability between the adjusting piece 40 and the tuning part 111 can be improved.

[0190] Please refer to FIG. 1 and FIG. 2, in some embodiments of the present application, the driving piece 30 is a steel material piece. By adopting the above scheme, the structural strength and rigidity of the driving piece 30 can be improved, the degree of wear and damage of the driving piece 30 during rotation can be reduced, the use reliability of the driving piece 30 can be improved, and the service life of the driving piece 30 can be prolonged.

[0191] Please refer to FIG. 1 and FIG. 2, in some embodiments of the present application, the limiting piece 20 is a hard aluminum alloy material piece, and the fixing part 112 is a soft aluminum alloy material piece.

[0192] By adopting the above scheme, the material of the limiting piece 20 is hard aluminum alloy, the material of the fixing part 112 is high-toughness soft aluminum alloy, and both the limiting piece 20 and the fixing part 112 are made of aluminum alloy material, so that the limiting piece 20 and the fixing part 112 can be reliably and stably connected and fixed.

[0193] The embodiment is suitable for being combined with the embodiment of "welding the limiting member 20 and the fixing portion 112". Both the limiting member 20 and the fixing portion 112 are made of aluminum alloy material, so that laser welding between the limiting member 20 and the fixing portion 112 can be achieved, and welding effect and welding strength can be improved, and the connection efficiency, connection reliability and connection stability between the limiting member 20 and the fixing portion 112 can be improved.

[0194] The embodiment is suitable for being combined with the embodiment of "interference press-fit cooperation between the limiting member 20 and the groove wall of the stepped groove 1124". Since the limiting member 20 is made of hard aluminum alloy and the fixing portion 112 is made of soft aluminum alloy, the hardness of the limiting member 20 is higher than that of the fixing portion 112, so that the limiting member 20 and the fixing portion 112 can be press-fitted and fixed. If the limiting member 20 and the fixing portion 112 are both made of hard aluminum alloy or both made of soft aluminum alloy, the hardness of the limiting member 20 is comparable to that of the fixing portion 112, which may result in difficulty in press-fitting and fixing the limiting member 20 and the fixing portion 112. In this case, other ways can be used to connect and fix the limiting member 20 and the fixing portion 112.

[0195] Of course, the limiting member 20, the driving member 30 and the adjusting member 40 can be made of other metal materials or non-metal materials, such as wooden materials, plastic materials, ceramic materials, etc., as long as normal tuning operation can be performed.

[0196] Please refer to FIGS. 1, 2 and 3. In some embodiments of the present application, the cover plate 11 is a single-layer cover plate in one piece. In the present embodiment, the single-layer cover plate can be processed to form the relatively thinned tuning portion 111 by means of slotting.

[0197] By using the above scheme, the cover plate 11 is a single-layer cover plate in one piece, which can facilitate one-piece forming of the cover plate 11, improve the processing convenience and consistency of the cover plate 11, improve the assembly convenience of the cover plate 11 and other parts of the resonator shell 10, etc., reduce the number of parts of the cover plate 11 and the resonator, and improve the assembly convenience and efficiency of the resonator.

[0198] Of course, in other embodiments, the cover plate 11 can be a single-layer cover plate in separate pieces, i.e., the tuning portion 111 can be connected to the inner peripheral surface of the fixing portion 112 in separate pieces.

[0199] Please refer to FIG. 14. In some embodiments of the present application, the cover plate 11 is a double-layer cover plate, which includes a first plate member 114 and a second plate member 115. The second plate member 115 has the fixing portion 112, and the first plate member 114 is arranged in layers on the side of the second plate member 115 away from the driving member 30 and has the tuning portion 111.

[0200] It should be noted that the first plate member 114 is stacked on the second plate member 115 away from the driving member 30 (i.e. close to the resonant cavity 13). The part of the first plate member 114 stacked on the second plate member 115 is connected and fixed with the fixed part 112 of the second plate member 115. The connection and fixing manner of the first plate member 114 and the second plate member 115 can be, but is not limited to, welding, bonding, riveting, fastener connection, etc. The part of the first plate member 114 other than the part connected and fixed with the second plate member 115 can form the tuning part 111.

[0201] By adopting the above scheme, the cover plate 11 can cover other parts of the resonator shell 10 by stacking and connecting the first plate member 114 and the second plate member 115 in a split manner, and cooperate with other parts of the resonator shell 10 to realize the shielding function and prevent signal leakage. On this basis, the cover plate 11 can form the tuning part 111 by the first plate member 114 and form the fixed part 112 by the second plate member 115. Based on this, since the first plate member 114 can be independently formed, the tuning part 111 can be thinned to a large extent, and the part of the first plate member 114 other than the part connected and fixed with the second plate member 115 can form the tuning part 111, which can facilitate the deformation resistance of the tuning part 111 to be small and the deformation range to be large, thereby improving the adjustment convenience and adjustable range of the tuning part 111. Moreover, since the second plate member 115 and the first plate member 114 are formed and connected in a split manner, the second plate member 115 and the first plate member 114 can be made of the same or different materials, thereby facilitating the weight reduction of the cover plate 11 and the resonator, the light weight of the resonator, and the cost reduction of the cover plate 11 and the resonator.

[0202] Please refer to FIG. 6, in some embodiments of the present application, a sealing member is arranged between the limiting part 21 and the driving member 30. The sealing member can be a rubber sheet or other components with sealing effect.

[0203] By adopting the above scheme, by setting the sealing piece between the limiting portion 21 and the driving piece 30, the gap between the limiting portion 21 and the driving piece 30 can be sealed through the sealing piece. Based on this, the impurities such as dust and water outside the resonator can be reduced from penetrating into the gap between the limiting portion 21 and the driving piece 30, the rotation reliability and effectiveness of the driving piece 30 can be maintained, and the use reliability and service life of the resonator can be improved. Moreover, since the sealing piece seals the gap between the limiting portion 21 and the driving piece 30, the limiting portion 21, the sealing piece, the driving piece 30, and the fixed portion 112 are indirectly abutted in sequence. Based on this, no matter in the natural state, the rotation adjustment state of the driving piece 30, or the non-adjustment state of the driving piece 30, the driving piece 30 is not easy to rotate and loosen by itself, thereby the risk of loosening of the driving piece 30 in the non-adjustment state can be reduced, the risk of the deformation amount of the tuning portion 111 changing due to the loosening of the driving piece 30 can be reduced, and the accuracy of the tuning effect and the stability of the resonator index can be improved.

[0204] The embodiment is suitable for being combined and applied with the embodiment of “the friction piece 60 is arranged between the limiting portion 21 and the driving piece 30”, so that the sealing friction piece is arranged between the limiting portion 21 and the driving piece 30.

[0205] Please refer to FIG. 1, some embodiments of the present application provide a filter, which comprises one or more resonators provided by the embodiments of the present application. In the case where a plurality of resonators are provided, the plurality of resonators can be arranged and designed, and a coupling relationship can be constructed between adjacent two resonators as required.

[0206] By adopting the above scheme, the filter can improve the convenience, controllability, and stability of the tuning operation by adopting the resonator provided by the embodiments of the present application, and improve the tuning effect and the filter index.

[0207] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A resonator, wherein, The utility model relates to a tuning device, comprising: a cover plate having a tuning portion capable of being deformed under force and a fixing portion provided at the periphery of the tuning portion; a limiting member connected to the fixing portion in a split manner and having a limiting portion parallel to and spaced apart from the cover plate, the limiting portion being provided with an exposure hole; a driving member rotatably and limitingly installed between the limiting portion and the fixing portion, the driving member being provided with a threaded hole; an adjusting member threadedly connected to the threaded hole and fixed to the tuning portion; and 2. The resonator of claim 1, wherein, a part of the driving member being exposed in the exposure hole.

3. The resonator of claim 1, wherein, A friction member is provided between the limiting portion and the driving member; and / or a friction member is provided between the driving member and the fixing portion. The side surface of the limiting portion facing the driving member has a rough area; and / or the side surface of the driving member facing the limiting portion has a rough area; and / or the side surface of the driving member facing the fixing portion has a rough area; 4. The resonator of claim 1, wherein, and / or the side surface of the fixing portion facing the driving member has a rough area.

5. The resonator of claim 1, wherein, The distance between the limiting portion and the fixing portion is equal to or less than the thickness of the driving member. The fixing portion comprises a first ring portion, a second ring portion and a third ring portion provided in sequence from the tuning portion outward, the first ring portion and the limiting portion jointly limiting the driving member; 6. The resonator of claim 5, wherein, at least one of the first ring portion and the third ring portion protrudes from the second ring portion and forms a stepped groove with the second ring portion on the side close to the limiting member; and 7. The resonator of claim 6, wherein, a part of the limiting member is installed in the stepped groove and fixed to the inner wall of the stepped groove.

8. The resonator of claim 7, wherein, The limiting member comprises an installation portion connected to the periphery of the limiting portion and bently provided on the side close to the driving member; the installation portion is installed in the stepped groove and fixed to the inner wall of the stepped groove.

9. The resonator of claim 6, wherein, The third ring portion protrudes from the second ring portion and forms the stepped groove with the second ring portion on the side close to the limiting member; and 10. The resonator of claim 5, wherein, the outer peripheral wall of the installation portion is fixed to the third ring portion. The second ring portion is recessed in or flush with the first ring portion on the side close to the limiting member.

11. The resonator of any one of claims 5-10, wherein, The first ring portion protrudes from the second ring portion and forms the stepped groove with the second ring portion on the side close to the limiting member; and 12. The resonator of claim 11, wherein, the inner peripheral wall of the installation portion is fixed to the first ring portion.

13. The resonator of any one of claims 1-10, wherein, The limiting member is a flat plate structure; or the limiting member comprises an installation portion connected to the periphery of the limiting portion and bently provided on the side away from the driving member.

14. The resonator of any one of claims 1-10, wherein, The limiting member is press-fitted to the groove wall of the stepped groove. The limiting member and the fixing portion are further fixed by welding. The adjusting member and the tuning portion are press-fitted, press-riveted, bonded or welded. The adjusting member comprises a main body portion and a connecting portion connected to one end of the main body portion close to the tuning portion; and the projection of the connecting portion covers the projection of the main body portion in the axial direction of the adjusting member.

15. The resonator of any one of claims 1-10, wherein, The driving member comprises a driving body and an extension protruding from the driving body, and the threaded hole penetrates through the extension and the driving body.

16. The resonator of any one of claims 1-10, wherein, The driving member comprises an operation part exposed in the exposure hole.

17. The resonator of claim 16, wherein, The driving member comprises a driving body and an extension protruding from the driving body, and the threaded hole penetrates through the extension and the driving body, the adjustment member and the extension are exposed in the exposure hole, and the operation part is arranged on the outer peripheral wall of the extension.

18. The resonator of claim 17, wherein, The driving body is provided with an annular groove on the outer periphery of the extension.

19. The resonator of claim 16, wherein, The driving member comprises a driving body and an extension protruding from the driving body, and the threaded hole penetrates through the extension and the driving body, and the operation part is arranged on the driving body.

20. The resonator of any one of claims 1-10, wherein, The adjustment member is made of aluminum material, and the tuning part is made of soft aluminum alloy material. And / or, the driving member is made of steel material. And / or, the limiting member is made of hard aluminum alloy material, and the fixing part is made of soft aluminum alloy material.

21. The resonator of any one of claims 1-10, wherein, The cover plate is an integral single-layer cover plate; or the cover plate is a double-layer cover plate, which comprises a first plate member and a second plate member, the second plate member has the fixing part, and the first plate member is arranged in a laminated manner on the side of the second plate member away from the driving member and has the tuning part.

22. The resonator of any one of claims 1-10, wherein, A sealing member is arranged between the limiting part and the driving member.

23. A filter, wherein, The resonator comprises the resonator according to any one of claims 1-22.

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