Resonant rod assembly and filter

Abstract

The utility model relates to the technical field of communication, and provides a resonance rod assembly and a filter, the resonance rod assembly comprises a mounting column, a resonance rod, a fastener and a tap, the resonance rod is fixed on the mounting column through the fastener, and the tap is connected to the resonance rod; and a concave-convex limiting structure is arranged between the mounting column and the resonant rod so as to prevent the resonant rod from rotating relative to the mounting column when the resonant rod is fixed by the fastener. According to the resonance rod assembly, the concave-convex limiting structure is arranged between the mounting column and the resonance rod, so that the resonance rod can be prevented from rotating relative to the mounting column when the fastening piece fixes the resonance rod, the mounting angle of a tap connected to the resonance rod is ensured, and normal connection of the tap and a signal port is ensured.

Description

Technical Field

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

[0002] The filter generally includes a cavity and a resonant rod. A mounting post is provided in the cavity, and the resonant rod is fixed to the mounting post by fasteners. For the resonant rod with a tap, the installation position on the mounting post is required to be relatively high to ensure the normal connection between the tap and the signal port.

[0003] However, in the process of fixing the resonance rod by the fastener, the resonance rod may rotate relative to the mounting post, and the mounting angle of the tap on the resonance rod cannot be guaranteed, thereby affecting the connection between the tap and the signal port. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a resonant rod assembly and a filter to solve the problem that the installation angle of the tap on the resonant rod cannot be guaranteed.

[0005] The first aspect of the present application proposes a resonance rod assembly, including a mounting column, a resonance rod, a fastener and a tap, wherein the resonance rod is fixed to the mounting column by the fastener, and the tap is connected to the resonance rod; a concave and convex limiting structure is provided between the mounting column and the resonance rod to prevent the resonance rod from rotating relative to the mounting column when the fastener fixes the resonance rod.

[0006] The beneficial effect of the resonance rod assembly provided in the embodiment of the present application is as follows: by setting a concave and convex limiting structure between the mounting column and the resonance rod, the resonance rod can be prevented from rotating relative to the mounting column when the fastener fixes the resonance rod, so as to ensure the installation angle of the tap connected to the resonance rod, thereby ensuring the normal connection between the tap and the signal port.

[0007] In some embodiments, the concave-convex limiting structure includes a limiting concave portion and a limiting convex portion that cooperates with the limiting concave portion to limit the position, the limiting convex portion is arranged on one of the mounting column and the resonance rod, and the limiting concave portion is arranged on the other of the mounting column and the resonance rod.

[0008] In some embodiments, the limiting protrusion is a limiting boss, and the limiting recess is a limiting hole.

[0009] In some embodiments, the limiting hole is provided on the larger one of the two end surfaces of the resonance rod and the mounting column that are opposite to each other.

[0010] In some embodiments, the limiting boss is provided on the mounting column, and the limiting hole is provided on the resonance rod; a through hole for the fastener to pass through is provided on the resonance rod, and the limiting hole is connected to the through hole.

[0011] In some embodiments, the limiting boss is provided on the mounting post, and the limiting hole is provided on the resonant rod; the limiting hole is a through hole, and the height by which the limiting boss protrudes from the mounting post is less than the axial length of the limiting hole.

[0012] In some embodiments, the limiting boss and the mounting post are integrally formed.

[0013] In some embodiments, a plurality of the limiting convex portions and the limiting concave portions are provided at intervals along the circumferential direction of the mounting post.

[0014] In some embodiments, the fastener is a fastening screw, and in the axial direction of the fastening screw, the projection of the head of the fastening screw covers the projection of the concave-convex limiting structure.

[0015] A second aspect of the present application provides a filter, which includes a cavity and the resonant rod assembly as described in the first aspect, and the resonant rod assembly is located inside the cavity.

[0016] This filter adopts any one or more embodiments of the above-mentioned resonant rod assembly, and thus has the beneficial effects of the above embodiments, which will not be elaborated here one by one.

[0017] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically describes the embodiments of the present application. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of conventional technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram of a resonant rod assembly provided by some embodiments of the present application;

[0020] Figure 2 is Figure 1 a cross-sectional view taken along the A-A direction of the shown resonant rod assembly;

[0021] Figure 3 is Figure 2 an enlarged view of the shown resonant rod assembly at B;

[0022] Figure 4 is Figure 1Top view of the shown resonant rod assembly after removing the fasteners;

[0023] Figure 5 is Figure 2 Schematic structural diagram of the mounting post in;

[0024] Figure 6 is Figure 2 Schematic structural diagram of the resonant rod in.

[0025] The meanings of the marks in the figure are as follows:

[0026] 10. Resonant rod assembly;

[0027] 11. Mounting post; 111. Fixing hole;

[0028] 12. Resonant rod; 121. Perforation;

[0029] 13. Fastener;

[0030] 14. Tap;

[0031] 15. Concave-convex limit structure; 151. Limit concave part; 152. Limit convex part;

[0032] 16. Gap. Specific embodiments

[0033] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, and thus are only examples and should not be used to limit the protection scope of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0035] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality of" means more than two unless otherwise specifically defined.

[0036] Reference to "embodiment" in this document means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0038] In the description of the embodiments of the present application, the term "plural" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0039] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application.

[0040] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0041] An embodiment of the first aspect of the present application provides a resonant rod assembly for a filter. Please refer to Figure 1 and Figure 2, the resonant rod assembly 10 includes a mounting post 11, a resonant rod 12, a fastener 13, and a tap 14. The resonant rod 12 is fixed to the mounting post 11 by the fastener 13, and the tap 14 is connected to the resonant rod 12; an uneven limiting structure 15 is provided between the mounting post 11 and the resonant rod 12 to prevent the resonant rod 12 from rotating relative to the mounting post 11 when the fastener 13 fixes the resonant rod 12.

[0042] The structure of the mounting post 11 is not limited in this application. For example, the mounting post 11 can be a cylindrical structure, a prismatic structure, a frustum structure, a truncated pyramid structure, or other structures. Among them, the mounting post 11 is made of a metal material. For example, the metal material can be iron, steel, aluminum, copper, etc.

[0043] The structure of the resonant rod 12 is not limited in this application. For example, the resonant rod 12 can be a cylindrical structure, a disc structure, etc. Among them, the resonant rod 12 is made of a metal material. For example, the metal material can be iron, steel, aluminum, copper, etc.

[0044] It can be understood that the materials of the mounting post 11 and the resonant rod 12 can be the same or different.

[0045] Please also refer to Figure 3 , Figure 4 and Figure 6 , a fixing hole 111 is provided at the upper end of the mounting post 11, and a through hole 121 is provided at the bottom of the resonant rod 12. The fastener 13 passes through the through hole 121 and is inserted into the fixing hole 111 to fix the resonant rod 12 to the mounting post 11.

[0046] It can be understood that the fixing hole 111 can be a light hole. Correspondingly, the fastener 13 can be a fastening pin with a head; the fixing hole 111 can also be a threaded hole. Correspondingly, the fastener 13 can be a fastening screw, a fastening bolt, etc.

[0047] Optionally, the first end of the tap 14 is connected to the resonant rod 12, and the second end of the tap 14 is used to connect to a signal port. The signal is transmitted to the resonant rod 12 through the tap 14. It can be understood that the first end of the tap 14 can be fixed to the resonant rod 12 by means of welding, crimping, clamping, fastener connection, etc.

[0048] The structure of the tap 14 is not limited in this application. For example, the tap 14 can be a sheet structure, a rod structure, or other structures.

[0049] Optionally, the uneven limiting structure 15 is provided between the top of the mounting post 11 and the bottom of the resonant rod 12 to prevent the resonant rod 12 from rotating relative to the mounting post 11.

[0050] In the embodiment of the present application, the resonant rod assembly 10 ensures the installation angle of the tap 14 connected to the resonant rod 12 by providing a concave-convex limiting structure 15 between the mounting post 11 and the resonant rod 12, which can prevent the resonant rod 12 from rotating relative to the mounting post 11 when the fastener 13 fixes the resonant rod 12, so as to ensure the normal connection between the tap 14 and the signal port.

[0051] Moreover, the resonant rod assembly 10 does not require fixture positioning for installation, making the assembly relatively simple.

[0052] Please refer to Figure 2 and Figure 3 simultaneously. In some embodiments, the concave-convex limiting structure 15 includes a limiting recess 151 and a limiting protrusion 152 that is in limiting cooperation with the limiting recess 151. The limiting recess 151 is provided on the resonant rod 12, and the limiting protrusion 152 is provided on the mounting post 11.

[0053] It can be understood that the bottom diameter of the resonant rod 12 can be greater than, equal to, or less than the top diameter of the mounting post 11. When the bottom diameter of the resonant rod 12 is greater than the top diameter of the mounting post 11, the limiting recess 151 is provided at the bottom of the resonant rod 12, and the limiting protrusion 152 can be provided on the top end face of the mounting post 11 or on the outer wall surface of the top of the mounting post 11 and protrude from the top end face of the mounting post 11; when the bottom diameter of the resonant rod 12 is less than or equal to the top diameter of the mounting post 11, the limiting recess 151 is provided at the bottom of the resonant rod 12, and the limiting protrusion 152 is provided on the top end face of the mounting post 11.

[0054] In other embodiments, the limiting recess 151 can be provided on the mounting post 11, and the limiting protrusion 152 can be provided on the resonant rod 12.

[0055] In other embodiments, when there are multiple limiting recesses 151 and limiting protrusions 152, both the mounting post 11 and the resonant rod 12 are provided with both the limiting recess 151 and the limiting protrusion 152; the limiting recess 151 on the mounting post 11 is in limiting cooperation with the limiting protrusion 152 on the resonant rod 12, and the limiting protrusion 152 on the mounting post 11 is in limiting cooperation with the limiting recess 151 on the resonant rod 12.

[0056] In some embodiments, the limiting recess 151 is a limiting hole, and the limiting protrusion 152 is a limiting boss.

[0057] The shapes of the limiting hole and the limiting boss are not limited in this application, as long as the limiting hole and the limiting boss can be limitedly matched to prevent the resonance rod 12 from rotating relative to the mounting column 11. It can be understood that the limiting hole can be in the shape of a rectangular hole, and correspondingly, the limiting boss is in the shape of a rectangular boss; or, the limiting hole can be in the shape of a circular hole, and correspondingly, the limiting boss is in the shape of a circular boss; or, the limiting hole can be in the shape of an elliptical hole, and correspondingly, the limiting boss is in the shape of an elliptical boss.

[0058] When the limiting hole is provided on the resonance rod 12 and the limiting boss is provided on the mounting column 11: the limiting hole can be obtained synchronously when the resonance rod 12 is formed; or the resonance rod 12 can be formed first, and then the limiting hole can be processed on the resonance rod 12. The limiting boss can be integrally formed with the mounting column 11; or the limiting boss can be fixed on the mounting column 11, for example, the limiting boss can be fixed on the mounting column 11 by welding, clamping, crimping, fastener connection, threaded connection, interference connection, etc.

[0059] The limiting hole may be a blind hole, or a through hole that penetrates along the axial direction of the mounting column 11 .

[0060] When the limiting hole is provided on the mounting column 11 and the limiting boss is provided on the resonant rod 12, the limiting hole can be obtained synchronously when the mounting column 11 is formed; or, the resonant mounting column 11 can be formed first, and then the limiting hole can be processed on the mounting column 11. The limiting boss can be integrally formed with the resonant rod 12; or, the limiting boss can be fixed on the resonant rod 12, for example, the limiting boss can be fixed on the resonant rod 12 by welding, clamping, crimping, fastener connection, threaded connection, interference connection, etc.

[0061] Optionally, a chamfer is provided on the top edge of the limiting boss to facilitate the limiting boss to be inserted into the limiting hole.

[0062] In other embodiments, the limiting recess 151 may be an arc-shaped groove extending along the circumference of the mounting column 11 , and correspondingly, the limiting boss is an arc-shaped boss adapted to the arc-shaped groove.

[0063] In some embodiments, the limiting hole is provided on the larger one of the two end surfaces of the resonance rod 12 and the mounting column 11 that are opposite to each other.

[0064] It can be understood that when the bottom end surface of the resonance rod 12 is larger than the top end surface of the mounting column 11, the limit hole is arranged on the bottom end surface of the resonance rod 12; when the bottom end surface of the resonance rod 12 is smaller than the top end surface of the mounting column 11, the limit hole is arranged on the top end surface of the mounting column 11.

[0065] Please also refer to Figure 3 , Figure 5 and Figure 6, in some embodiments, the limiting boss is provided on the mounting post 11, and the limiting hole is provided on the resonant rod 12; a through hole 121 for the fastener 13 to pass through is provided on the resonant rod 12, and the limiting hole communicates with the through hole 121.

[0066] Optionally, the through hole 121 is a round hole, the fastener 13 includes a cylindrical rod section, and the diameter of the through hole 121 is slightly larger than the diameter of the cylindrical rod section of the fastener 13 to facilitate the cylindrical rod section of the fastener 13 to pass through the through hole 121.

[0067] It can be understood that the limiting hole and the through hole 121 can be machined together by means of casting or the like, or can be machined together by means of machining.

[0068] By communicating the limiting hole with the through hole 121, the limiting hole can be machined synchronously when machining the through hole 121, improving the machining efficiency.

[0069] In other embodiments, the limiting hole and the through hole 121 may not communicate.

[0070] In other embodiments, the limiting hole can be provided on the mounting post 11, and the limiting boss can be provided on the resonant rod 12; wherein, a fixing hole 111 is provided on the mounting post 11, and the limiting hole communicates with the fixing hole 111. Of course, the limiting hole and the fixing hole 111 may also not communicate.

[0071] Please also refer to Figure 2 and Figure 3 , in some embodiments, the limiting boss is provided on the mounting post 11, and the limiting hole is provided on the resonant rod 12; the limiting hole is a through hole, and the height by which the limiting boss protrudes from the mounting post 11 is less than the axial length of the limiting hole.

[0072] The height by which the limiting boss protrudes from the mounting post 11 is less than the axial length of the limiting hole. It can be understood that when the limiting boss and the limiting hole are in limiting cooperation, there is a gap 16 between the limiting boss and the head of the fastener 13 to avoid contact and interference between the limiting boss and the head of the fastener 13.

[0073] The size of the gap 16 between the limiting boss and the head of the fastener 13 can be determined according to the bottom thickness of the resonant rod 12; generally, the size of the gap 16 is less than or equal to 20% of the bottom thickness of the resonant rod 12. Optionally, the gap 16 can be 0.05 - 0.1 mm. In this way, while avoiding contact between the limiting boss and the head of the fastener 13, the depth of insertion of the limiting boss into the limiting hole is ensured, which is beneficial to improving the stability when the limiting boss and the limiting hole are in limiting cooperation.

[0074] By adopting the above technical solution, since the head of the fastener 13 will not contact the limiting boss, the head of the fastener 13 can be pressed against the resonant rod 12 to ensure that the resonant rod 12 can be fixed on the mounting post 11.

[0075] In other embodiments, the height by which the limiting boss protrudes from the mounting post 11 can be equal to or higher than the axial length of the limiting hole. At this time, an avoidance groove can be formed on the side of the head of the fastener 13 facing the limiting boss, and the avoidance groove is used to avoid the limiting boss to prevent the limiting boss from contacting the head of the fastener 13. Among them, when the fastener 13 is a fastening screw, the avoidance groove is an annular groove to avoid the limiting boss during the screwing process of the fastener 13.

[0076] In some embodiments, the spacing dimension between the outer wall surface of the limiting boss and the hole wall of the limiting hole can be 0.05 - 0.1 mm to facilitate the insertion of the limiting boss into the limiting hole. Moreover, within the error range of this spacing dimension, it will not affect the installation angle of the tap 14.

[0077] In some embodiments, a plurality of limiting convex portions 152 and a plurality of limiting concave portions 151 are arranged at intervals along the circumferential direction of the mounting post 11.

[0078] It can be understood that a plurality of limiting convex portions 152 are arranged at intervals along the circumferential direction of the mounting post 11 on the mounting post 11, and a plurality of limiting concave portions 151 are arranged at intervals along the circumferential direction of the mounting post 11 on the resonant rod 12; or, a plurality of limiting convex portions 152 are arranged at intervals along the circumferential direction of the mounting post 11 on the resonant rod 12, and a plurality of limiting concave portions 151 are arranged at intervals along the circumferential direction of the mounting post 11 on the mounting post 11.

[0079] By providing a plurality of limiting convex portions 152 and a plurality of limiting concave portions 151, the stability of the limiting fit is ensured, and at the same time, it is beneficial to ensure uniform force during the limiting fit.

[0080] In other embodiments, only one limiting convex portion 152 and one limiting concave portion 151 can be provided.

[0081] In some embodiments, the fastener 13 is a fastening screw, making the installation and disassembly of the resonant rod 12 relatively convenient.

[0082] Optionally, the fixing hole 111 on the mounting post 11 is a threaded hole, and a through hole 121 is provided at the bottom of the resonant rod 12. The fastening screw passes through the through hole 121 and is screwed into the fixing hole 111 to fix the resonant rod 12 on the mounting post 11. Since the concave-convex limiting structure 15 is provided between the mounting post 11 and the resonant rod 12, it can prevent the resonant rod 12 from rotating along with the fastening screw when the fastening screw fixes the resonant rod 12, so as to ensure the installation angle of the tap 14 connected to the resonant rod 12.

[0083] Optionally, the fixing hole 111 is located at the center or near the center of the mounting post 11, and the through hole 121 is located at the center or near the center of the resonant rod 12.

[0084] Wherein, in the axial direction of the fastening screw, the projection of the head of the fastening screw covers the projection of the concave-convex limit structure 15, so as to increase the contact area between the head of the fastening screw and the bottom of the resonant rod 12, making the resonant rod 12 more firmly fixed on the mounting post 11.

[0085] In other embodiments, the fastener 13 is a fastening pin with a head. The fixing hole 111 on the mounting post 11 is a clearance hole. The bottom of the resonant rod 12 is provided with a through hole 121. The fastening pin passes through the through hole 121 and is press-fitted into the fixing hole 111 to fix the resonant rod 12 on the mounting post 11.

[0086] A second aspect of the present application provides a filter. The filter includes a cavity and the resonant rod assembly 10 as described in the first aspect, and the resonant rod assembly 10 is located inside the cavity. Wherein, the number of the resonant rod assemblies 10 can be one, two, three or more.

[0087] Wherein, the resonant rod assembly 10 includes a mounting post 11 and a resonant rod 12 mounted on the mounting post 11; it can be understood that the mounting post 11 can be integrally formed with the bottom wall of the cavity, or the mounting post 11 can be fixed on the bottom wall of the cavity. For example, the mounting post 11 can be fixed on the bottom wall of the cavity by means of welding, clamping, press-fitting, fastener connection, threaded connection, interference connection, etc.

[0088] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A resonant rod assembly, characterized in that: It includes a mounting column, a resonance rod, a fastener and a tap, the resonance rod is fixed to the mounting column by the fastener, and the tap is connected to the resonance rod; a concave and convex limiting structure is provided between the mounting column and the resonance rod to prevent the resonance rod from rotating relative to the mounting column when the fastener fixes the resonance rod.

2. The resonant rod assembly according to claim 1, wherein: The concave-convex limiting structure includes a limiting concave portion and a limiting convex portion that cooperates with the limiting concave portion in a limiting manner. The limiting convex portion is arranged on one of the mounting column and the resonance rod, and the limiting concave portion is arranged on the other of the mounting column and the resonance rod.

3. The resonant rod assembly according to claim 2, characterized in that: The limiting convex part is a limiting boss, and the limiting concave part is a limiting hole.

4. The resonant rod assembly according to claim 3, characterized in that: The limiting hole is arranged on the one with a larger area among the two end surfaces of the resonance rod and the mounting column which are opposite to each other.

5. The resonant rod assembly according to claim 3, wherein: The limiting boss is arranged on the mounting column, and the limiting hole is arranged on the resonance rod; a through hole for the fastener to pass through is arranged on the resonance rod, and the limiting hole is communicated with the through hole.

6. The resonant rod assembly according to claim 3, wherein: The limiting boss is arranged on the mounting column, and the limiting hole is arranged on the resonance rod; the limiting hole is a through hole, and the height of the limiting boss protruding from the mounting column is smaller than the axial length of the limiting hole.

7. The resonant rod assembly according to claim 5 or 6, characterized in that: The limiting boss and the mounting column are integrally formed.

8. The resonant rod assembly according to any one of claims 2 to 6, characterized in that: A plurality of the limiting protrusions and the limiting recesses are arranged at intervals along the circumference of the mounting column.

9. The resonant rod assembly according to any one of claims 1 to 6, characterized in that: The fastener is a fastening screw, and in the axial direction of the fastening screw, the projection of the head of the fastening screw covers the projection of the concave-convex limiting structure.

10. A filter, characterized in that: The invention comprises a cavity and a resonant rod assembly as claimed in any one of claims 1 to 9, wherein the resonant rod assembly is located in the cavity.

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