Tuning screw

Abstract

The utility model provides a tuning screw rod, which is arranged in a filter and comprises a head part and a plurality of sections of connecting parts, one end of the head part is connected with the connecting piece, and the other end of the head part is provided with a connecting hole; each connecting part comprises a first part and a second part which are coaxially and fixedly connected, and the first part of one of the adjacent connecting parts is connected with the second part of one of the adjacent connecting parts; the first part of one of the connecting parts is in threaded connection with the connecting hole, and the second part of the other connecting part is connected with the resonant column. According to the utility model, the tuning screw rod is divided into a plurality of sections to be assembled, so that the types of the tuning screw rods in the production process are reduced, and the cost is reduced on the premise of reducing the machining amount.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and in particular relates to a tuning screw. Background Art

[0002] In modern communications, filters play a vital role, screening signals of specific frequencies to ensure accurate and stable signal transmission within communication systems. The tuning screw, a common filter component, plays a key role in filter operation. By controlling the length of the cavity, it effectively adjusts the filter frequency and window coupling, thereby meeting the specific signal filtering requirements of different communication scenarios.

[0003] With the advent of the 5G communications era, communication technology is experiencing rapid development, making various engineering application scenarios increasingly complex and diverse. Consequently, filter design requirements are also increasing. They require not only more precise frequency adjustment capabilities and better window coupling, but also higher expectations in terms of cost control and production efficiency.

[0004] Traditional cavity filters generally use tuning screws as structural components in their designs. However, the traditional tuning screws currently available on the market have many shortcomings. On the one hand, there are many types of tuning screws, and different application scenarios often require tuning screws of different specifications and models, which increases the difficulty in production, storage, and management. On the other hand, traditional tuning screws require a lot of machining during processing and manufacturing, which requires a lot of processing time and raw materials, which directly leads to high production costs. In addition, in terms of production efficiency, it is difficult to meet the current market situation of rapid development of the communications industry and the large demand for filter products. Utility Model Content

[0005] In order to solve the problems described in the background art of the wide variety of traditional tuning screws, the large amount of machining required during manufacturing, the large amount of processing time required, and the high cost of raw materials, the present invention proposes the following technical solutions:

[0006] A tuning screw is provided in a filter, comprising: a head and multiple connecting parts; one end of the head is connected to a connecting piece, and the other end of the head is provided with a connecting hole; each of the connecting parts comprises a first part and a second part that are coaxially fixedly connected, and the first part of one of the adjacent connecting parts is connected to the second part of one of the adjacent connecting parts; the first part of one of the connecting parts is threadedly connected to the connecting hole, and the second part of the other of the connecting parts is connected to a resonant column.

[0007] Wherein, each of the second parts is provided with a guide hole, and the depth of each of the guide holes is equal to the length of the first part.

[0008] Furthermore, the diameter of the first portion is equal to the diameter of the guide hole, and the diameter of the second portion is equal to the diameter of the head.

[0009] Furthermore, the diameter of the guide hole is equal to the diameter of the connecting hole, and the depth of the connecting hole is equal to the length of the first portion.

[0010] Furthermore, the length of the first portion is smaller than the length of the second portion.

[0011] Furthermore, the resonant column and the connecting portion are coaxial, and a diameter of the resonant column is larger than a diameter of the connecting column.

[0012] Beneficial effects: The utility model divides the tuning screw into multiple sections for assembly, thereby reducing the types of tuning screws in the production process and reducing costs while reducing the amount of machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure of a filter according to an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the exploded structure of a tuning screw according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of this application more clear, the present invention will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0017] Figure 1 Schematic diagram of the structure of a filter according to an embodiment of the present invention.

[0018] Reference Figure 1According to an embodiment of the present invention, a tuning screw includes: a head 1 and a multi-section connecting portion 2. One end of the head 1 is connected to a connecting member 3, and the other end of the head 1 is provided with a connecting hole. Each connecting portion 2 includes a first portion 21 and a second portion 22 that are coaxially fixedly connected, and the first portion 21 of one of the adjacent connecting portions 2 is connected to the second portion 22 of one of the adjacent connecting portions 2. The first portion 21 of one of the connecting portions 2 is threadedly connected to the connecting hole, and the second portion 22 of the other connecting portion 2 is connected to the resonant column 4.

[0019] Figure 2 This is a schematic diagram of the exploded structure of a tuning screw according to an embodiment of the present utility model.

[0020] Reference Figure 2 Specifically, the head 1 is cylindrical as a whole, and the connecting parts 2 are connected in sequence to form a whole that is connected to the head 1 to form a complete cylindrical shape. Among them, each second part 22 is provided with a guide hole 221 on the end face away from the first part 21. The diameter of the guide hole 221 is equal to the diameter of the first part 21, and the depth of the guide hole 221 is equal to the length of the first part 21. The diameter of the first part 21 is equal to the diameter of the connecting hole, and the length of the first part 21 is equal to the depth of the connecting hole. The diameter of the second part 22 is equal to the diameter of the first part 21, and the first part 21 of one of the adjacent connecting parts 2 is fixed to the guide hole 221 of the other adjacent connecting part 2 by a threaded connection. The first part 21 of one of the connecting parts 2 is fixedly connected to the connecting hole of the head 1 by a thread.

[0021] Continue to refer to Figure 1 During assembly, the connecting part 2 with the corresponding number of sections is selected according to the length required by the design for assembly. The whole formed after connection is fixed to the head 1 to form a complete tuning screw. Inside the filter, the guide port farthest from the head 1 is installed in the resonant column 4 through a thread, and the diameter of the resonant column 4 is larger than the diameter of the connecting part 2. After the installation is completed, the tuning screw is embedded in the resonant column 4. When the filter starts to be debugged, the operator only needs to select the number of sections of the connecting part 2 for assembly according to the design requirements, and then connect it to the head 1 to form a complete tuning screw and then pass it through the cover of the filter. The side of the head 1 away from the resonant column 4 is connected to the connector 3 to control the depth of the tuning screw entering the filter. After the cover is fixed, one end of the tuning screw passes through the outside of the filter, and the other end of the tuning screw is embedded in the resonant column 4.

[0022] In summary, the present invention divides the tuning screw into multiple sections for assembly, thereby reducing the types of tuning screws in the production process and reducing costs while reducing the amount of machining.

[0023] While the foregoing description describes certain embodiments of the invention, other embodiments are within the scope of the following claims.

[0024] Throughout this specification, the terms "exemplary," "example," and the like are used to mean "serving as an example, instance, or illustration" and do not imply "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described embodiments.

[0025] The above describes in detail the optional implementation methods of the embodiments of the present invention in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details of the above implementation methods. Within the technical concept of the embodiments of the present invention, the technical solutions of the embodiments of the present invention can be modified in a variety of simple ways, and these simple modifications all fall within the scope of protection of the embodiments of the present invention.

[0026] The foregoing description of this specification is provided to enable any person skilled in the art to implement or use the present disclosure. Various modifications to this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but is intended to be consistent with the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tuning screw, provided in a filter, characterized in that: include: A head (1) and a multi-section connecting portion (2); one end of the head (1) is connected to a connecting member (3), and the other end of the head (1) is provided with a connecting hole (11); each connecting portion (2) comprises a first portion (21) and a second portion (22) that are coaxially fixedly connected, and the first portion (21) of one of the adjacent connecting portions (2) is connected to the second portion (22) of one of the adjacent connecting portions (2); the first portion (21) of one of the connecting portions (2) is threadedly connected to the connecting hole (11), and the second portion (22) of the other of the connecting portions (2) is connected to a resonant column (4).

2. A tuning screw according to claim 1, characterized in that: A guide hole (221) is provided in each of the second parts (22), and the depth of each of the guide holes (221) is equal to the length of the first part (21).

3. A tuning screw according to claim 2, characterized in that: The diameter of the first portion (21) is equal to the diameter of the guide hole (221), and the diameter of the second portion (22) is equal to the diameter of the head (1).

4. A tuning screw according to claim 3, characterized in that: The diameter of the guide hole (221) is equal to the diameter of the connecting hole (11), and the depth of the connecting hole (11) is equal to the length of the first portion (21).

5. The tuning screw according to claim 4, characterized in that: The length of the first portion (21) is smaller than the length of the second portion (22).

6. The tuning screw according to claim 4, characterized in that: The resonant column (4) is coaxial with the connecting portion (2), and the diameter of the resonant column (4) is greater than the diameter of the connecting portion (2).

Images