Novel integrated screw resonance rod

Abstract

The utility model discloses a novel integrated screw resonance rod, which comprises a rod body, a resonant cavity body arranged on the rod body, a screw rod adaptive hole communicated with the resonant cavity body, a nut counter bore arranged between the resonant cavity body and the screw rod adaptive hole in a penetrating manner, and a polygonal structure arranged at the bottom of the rod body, the polygonal structure is formed by connecting a plurality of smooth structures end to end around the center axis of the rod body in an annular array mode. According to the utility model, the bottom of the rod body is the part connected with the cover plate, and a fully symmetrical locking structure with a polygonal structure and a smooth structure is adopted. By means of the design, the bottom of the rod body and the cover plate can be kept in a stable state, looseness of the rod body is avoided, and meanwhile looseness of the screw rod is prevented. The effect of the smooth structure is equal to that of a circle, so that the original resonant frequency of the resonant rod can be better maintained. Therefore, the installed resonance rod can achieve a more stable frequency-selecting filtering effect.

Description

Technical Field

[0001] The utility model relates to the technical field of resonance rods of communication devices, in particular to a novel integrated screw resonance rod. Background Art

[0002] Cavity filters have good frequency selection and filtering effects in circuits and electronic high-frequency systems, and can effectively suppress useless signals and noise outside the frequency band. Such filters generally include main components such as cavities, resonators, and cover plates. Among them, the resonator can be called a resonance rod according to its shape, and common geometric shapes include rectangular, circular, and annular, etc., and these shapes have an important impact on the resonance frequency and quality factor (Q value). Resonance rods of different shapes exhibit different characteristics in different application scenarios. For example, rectangular microstrip resonators are widely used in various occasions due to their wide applicability and excellent electrical performance. For the design optimization of resonance rods, it usually includes three aspects: cross-section optimization, geometric shape optimization, and topology optimization: cross-section optimization focuses on how to adjust the cross-section size to achieve the lightest weight; geometric shape optimization focuses on changing the shape of the structural boundary; topology optimization studies how to distribute materials or open holes to obtain the optimal structural form. Currently, resonance rods are usually fixed to the cover plate by screws. Although the bottom design of the circular resonance rod is simple and convenient for controlling the resonance frequency, when encountering impacts, vibrations, or dynamic loads during operation, the screws may undergo small displacements or rotations, thereby reducing their pre-tightening force and causing loosening phenomena, which will not only affect the resonance frequency but also may reduce the stability of the resonance rod;

[0003] To solve this problem, an improved solution was proposed in Patent Application No. 202320873103.3: by setting a clamping groove on the lower end surface of the resonance rod, the resonance rod is sleeved outside the base from top to bottom and fixed with connecting screws. This design improves the stability of the resonance rod after installation, avoids the occurrence of tilting, and at the same time, since both the base and the clamping groove are of polygonal cross-sections, it can effectively prevent the loosening of the screws caused by the rotation of the resonance rod. However, the "hexagon" design in this solution does not clearly indicate whether it is a symmetric and uniform structure. Therefore, although the problem of screw loosening is solved, it does not provide a sufficient solution for maintaining the original resonance frequency of the resonance rod. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part as well as in the abstract and title of the application to avoid obscuring the purpose of this part, the abstract, and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] To solve the problems raised above, the present utility model provides the following technical solutions: A novel integrated screw resonator rod includes a rod body, and a resonant cavity provided in the rod body, and a screw rod fitting hole communicating with the resonant cavity, characterized in that: A nut counterbore is provided through between the resonant cavity and the screw rod fitting hole, the bottom of the rod body has a polygonal structure, and the polygonal structure is formed by a plurality of smooth structures connected end to end in a circular array around the central axis of the rod body.

[0006] Based on the above technical solutions, the present utility model can also be improved as follows.

[0007] As a preferred embodiment of the novel integrated screw resonator rod of the present utility model, wherein: The depth of the nut counterbore is equal to the thickness of the screw nut used, and the nut can be completely received in the nut counterbore.

[0008] As a preferred embodiment of the novel integrated screw resonator rod of the present utility model, wherein: The nut counterbore is cylindrical.

[0009] As a preferred embodiment of the novel integrated screw resonator rod of the present utility model, wherein: The number of the smooth structures is between 3 and 8.

[0010] As a preferred embodiment of the novel integrated screw resonator rod of the present utility model, wherein: The smooth structure includes a convex edge and a concave edge, the convex edge and the concave edge are connected end to end, and a fillet is provided at the connection.

[0011] As a preferred embodiment of the novel integrated screw resonator rod of the present utility model, wherein: The polygonal structure is a structure with a groove opened at the bottom of the rod body.

[0012] The beneficial effects of the present utility model are as follows: The bottom of the rod body is the part connected to the cover plate, and a polygonal structure and a completely symmetric locking structure with smooth structures are adopted. This design is beneficial to keep the bottom of the rod body and the cover plate in a stable state, avoiding the loosening of the rod body and also preventing the loosening of the screw rod. Since the effect of the smooth structure is equivalent to that of a circle, this helps to better maintain the original resonant frequency of the resonator rod. Therefore, the installed resonator rod can achieve a more stable frequency selection and filtering effect. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings. Among them:

[0014] Figure 1 It is a three-dimensional view of the whole of Embodiment 1.

[0015] Figure 2 It is a cross-sectional view of the rod body in Embodiment 1.

[0016] Figure 3 It is a bottom view of the rod body in Embodiment 1.

[0017] Figure 4 It is a cross-sectional view of the rod body in Embodiment 1 assembled on the cover plate.

[0018] Figure 5 It is a cross-sectional view of the rod body in Embodiment 1.

[0019] Figure 6 It is a perspective view of the rod body in Embodiment 2.

[0020] Figure 7 It is a cross-sectional view of the rod body and the cover plate in Embodiment 2.

[0021] In the figure: rod body 100, resonant cavity 101, nut counterbore 102, screw adapter hole 103, polygonal structure 104, smooth structure 105, convex edge 105a, concave edge 105b, central axis 100a, first thread 106, second thread 107;

[0022] Screw 200, nut 201;

[0023] Cover plate 300, protrusion 301, screw hole 301a, connecting block 302, splicing screw hole 303, hollow protrusion 304, third thread 304a. Detailed implementation manners

[0024] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present utility model in conjunction with the accompanying drawings of the specification.

[0025] In the following description, many specific details are set forth to facilitate a thorough understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0026] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other with other embodiments.

[0027] Embodiment 1

[0028] Refer to Figures 1 to 5, which is the first embodiment of the utility model, provides a novel integrated screw resonance rod, including a rod body 100, and a resonance cavity 101 of the rod body 100, a screw rod adapting hole 103 connected to the resonance cavity 101, a nut countersunk hole 102 is provided between the resonance cavity 101 and the screw rod adapting hole 103, and the bottom of the rod body 100 has a polygonal structure 104, and the polygonal structure 104 is composed of a plurality of smooth structures 105 connected end to end in a circular array with the central axis 100a of the rod body 100.

[0029] Specifically, the bottom of the rod body 100 is the part connected to the cover plate, and adopts a polygonal structure 104 and a completely symmetrical locking structure with a smooth structure, which is beneficial for maintaining the bottom of the rod body 100 and the cover plate in a stable state, avoiding loosening of the rod body 100 and preventing loosening of the screw 200. At the same time, the smooth structure has an effect equivalent to a circle, which is beneficial for better control and maintenance of the original resonant frequency of the resonant rod. Therefore, the resonant rod after installation has a more stable frequency selection and filtering effect.

[0030] In the embodiment, the depth of the nut countersink 102 is equal to the thickness of the screw nut used, and the nut can be completely received in the nut countersink 102. In order to cooperate with the installation of the rod body 100, the cover plate 300 has a protrusion 301 with the same structure as the bottom of the rod body 100. The protrusion 301 must have a screw hole 301a for threaded connection with the screw rod 200. By setting the depth of the nut countersink 102 to be equal to the thickness of the screw nut used, and the nut can be completely received in the nut countersink 102, the error of the depth of the screw hole 301a can be reduced. As long as the nut 201 does not separate from the nut countersink 102, the nut 201 and the nut countersink 102 are regarded as a whole, which does not affect the original resonant frequency of the rod body 100.

[0031] In the embodiment, the nut counterbore 102 is cylindrical, and the circular structure is easier to maintain the original resonant frequency;

[0032] In the embodiment, the number of the smooth structures 105 is between 3 and 8. When the number of the smooth structures 105 is 3, the endpoints thereof are connected to form an isosceles triangle to form the most basic locking structure. When the number of the smooth structures 105 is 8, the side lines of the locking structure are more. However, when the number exceeds 8, too many side lines are not conducive to processing.

[0033] In the embodiment, the smooth structure 105 includes a convex edge 105a and a concave edge 105b, and the convex edge 105a and the concave edge 105b are connected at the ends, and the connection has a rounded corner, and the rounded corner makes the smooth structure 105 smoother after it is formed, so as to prevent the screw rod 200 and the rod body 100 from loosening while maintaining the original resonant frequency of the resonant rod;

[0034] In an embodiment, the polygonal structure 104 is a structure with a groove opened at the bottom of the rod body 100, or alternatively, the polygonal structure 104 can be located outside the bottom of the rod body 100, and the screw adapter hole 103 is opened at the central axis 100a of the polygonal structure 104.

[0035] Embodiment 2

[0036] Referring to Figures 6 to 7 , this is the second embodiment of the present invention. The difference between this embodiment and the previous one is that the nut counterbore 102 and the screw adapter hole 103 in the resonant cavity 101, as well as the screw 200, are cancelled. Instead, the resonant cavity 101 extends straight through. At the bottom of the rod body 100, the connection between the rod body 100 and the cover plate 300 is achieved by threading instead of using the screw 200.

[0037] Specifically, the outer surface of the bottom of the rod body 100 has a first thread 106, and the inner surface has a second thread 107.

[0038] The connection block 302 of the cover plate 300 is provided with a splicing screw hole 303 corresponding to the first thread 106 at the bottom of the rod body 100. The bottom of the splicing screw hole 303 has a hollow protrusion 304, and the outer surface of the hollow protrusion 304 is provided with a third thread 304a corresponding to the second thread 107.

[0039] In this embodiment, the rod body 100 and the existing two parts of the screw and the rod body 100 are integrated into an integral resonant rod. When fixing with the cover plate 300, it is rotationally fixed in the splicing screw hole 303 of the connection block 302 through the first thread 106 at the bottom of the rod body 100, and is rotationally fixed by the second thread 107 provided in the resonant cavity 101 at the end of the rod body 100 and the third thread 304a of the hollow protrusion 304 in the splicing screw hole 303. This method not only solves the problem of easy loosening during co-frequency when simply connected by threads, but also reduces the length of the fixed part at the bottom of the integral resonant rod from the process, reduces the processing difficulty, improves the process accuracy, and ensures the overall filtering effect of the cavity filter.

[0040] Summary; The method of integrating the rod body 100 with an existing screw into an integral resonant rod has multiple advantages. First, by setting the first thread 106 at the bottom of the rod body 100 and fixing it with the splicing screw hole 303 on the connecting block 302, and at the same time using the second thread 107 in the resonant cavity 101 at the end of the rod body 100 and the third thread 304a on the hollow protrusion 304 in the connecting block 302 for further fixation, the loosening problem that is likely to occur during co-frequency is effectively solved. Second, this design can also reduce the length of the part at the bottom of the integral resonant rod for fixation, thereby reducing the processing difficulty and improving the process precision. Finally, this optimized design also helps to ensure the overall filtering effect of the cavity filter, ensuring the stability and reliability of the product.

[0041] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function described herein, and not only structurally equivalent but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0042] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model or those features that are not relevant to the implementation of the present utility model).

[0043] It should be understood that, in the development of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions can be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be routine work in design, manufacturing, and production.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A novel integrated screw resonance rod, comprising a rod body (100), and a resonance cavity (101) provided in the rod body (100), and a screw adapter hole (103) communicating with the resonance cavity (101), characterized in that: A nut counterbore (102) is provided through between a resonant cavity (101) and a screw adapter hole (103). The bottom of the rod body (100) has a polygonal structure (104), and the polygonal structure (104) is formed by a plurality of smooth structures (105) arranged in a circular array with the central axis (100a) of the rod body (100) as the head and tail connected.

2. The novel integrated screw resonance rod according to claim 1, characterized in that: The depth of the nut counterbore (102) is equal to the thickness of the screw nut used, and the nut can be completely received within the nut counterbore (102).

3. The novel integrated screw resonance rod according to claim 2, characterized in that: The nut counterbore (102) is cylindrical.

4. The novel integrated screw resonance rod according to claim 1, wherein: The number of the smooth structures (105) is between 3 and 8.

5. The novel integrated screw resonance rod according to claim 4, characterized in that: The smooth structure (105) includes a convex edge (105a) and a concave edge (105b). The convex edge (105a) and the concave edge (105b) are connected end to end, and there is a rounded corner at the connection.

6. The novel integrated screw resonance rod according to claim 1, characterized in that: The polygonal structure (104) is a structure with a groove formed at the bottom of the rod body (100).

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