Filter

Abstract

The utility model provides a filter, and belongs to the technical field of filters. The filter comprises a body, a resonance assembly, a metal piece, an insulation supporting piece and a first debugging screw. The body defines a cavity; the plurality of resonance assemblies are accommodated in the cavity and are arranged at intervals along a first direction; the metal piece and the insulation supporting piece are arranged in the cavity, the metal piece is connected with the body through insulation, the metal piece and the resonance assembly are arranged in a spaced mode, and a through hole is formed in the metal piece in the second direction; the first debugging screw is movably connected with the body in the second direction, one end of the first debugging screw is inserted into the cavity, and at least part of the end of the first debugging screw is contained in the through hole. According to the filter provided by the utility model, through adjusting the first debugging screw rod to move along the second direction, the adjustment of the intensity change of the coupling zero point is realized, so that the design requirement of a filter product is met, and the adjustment range, the sensitivity and the adjustment efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and particularly relates to a filter. Background Art

[0002] With the rapid development of the communication industry, the trend of filters is towards integration and miniaturization. Customers often need to adopt a straight-through cavity form for the radio frequency integration of products, and it is necessary to add transmission zeros at the low end to meet the out-of-band rejection requirements of the products. The traditional scheme is insensitive to the adjustment of the coupling amount of the flying rods, resulting in a small adjustment range or even no adjustment range. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and provide a filter.

[0004] The utility model provides the following technical solution: A filter, comprising:

[0005] A body defining a cavity;

[0006] A plurality of resonant components received in the cavity and arranged at intervals along a first direction;

[0007] A metal part and an insulating support member disposed in the cavity, the metal part being connected to the body through the insulator and spaced apart from the resonant components, and along a second direction, the metal part is provided with a through hole;

[0008] A first debugging screw rod movably connected to the body along the second direction, one end of the first debugging screw rod being inserted into the cavity, and at least part of one end of the first debugging screw rod being received in the through hole;

[0009] The first direction is perpendicular to the second direction.

[0010] In some embodiments, the body includes a base and a cover;

[0011] The base is provided with a receiving groove, and the cover is connected to the base and covers the receiving groove to define the cavity between the base and the cover.

[0012] In some embodiments, there are two insulating support members, and the two insulating support members are respectively disposed at both ends of the metal part along the first direction;

[0013] Along the second direction, one end of the insulating support member is connected to the base, and the other end of the insulating support member is connected to the metal part.

[0014] In some embodiments, along the first direction, the distance from the axis of the through hole to the axes of the two insulating support members is equal.

[0015] In some embodiments, a first debugging nut is provided on a side of the cover body facing away from the base, and the first debugging nut is in threaded connection with the first debugging screw.

[0016] In some embodiments, a coupling rod is provided between two adjacent resonant components, and one end of the coupling rod passes through the cover body and is in threaded connection with the cover body.

[0017] In some embodiments, a second debugging nut is provided on a side of the cover body facing away from the base, and the second debugging nut is in threaded connection with the coupling rod.

[0018] In some embodiments, the resonant component includes a resonant rod and a second debugging screw;

[0019] One end of the resonant rod is connected to the base, and a second groove is provided at an end of the resonant rod facing the cover body;

[0020] One end of the second debugging screw passes through the cover body and is at least partially inserted into the second groove, and the second debugging screw is in threaded connection with the cover body.

[0021] In some embodiments, the resonant component further includes a third debugging nut;

[0022] The third debugging nut is provided on a side of the cover body facing away from the base and is in threaded connection with the second debugging screw.

[0023] In some embodiments, there are three groups of the resonant components, and the three groups of resonant components are arranged at equal intervals along the first direction.

[0024] The embodiments of the present utility model have the following advantages: By connecting the metal part to the body through the insulating support and arranging it at intervals from the resonant component, a cavity cross-cavity transmission zero point is formed. By providing through holes in the metal part and adjusting the movement of the first debugging screw along the second direction, the adjustment of the strength change of the coupling zero point is realized, so as to meet the design requirements of the filter product, and the adjustment range, sensitivity and adjustment efficiency are improved.

[0025] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0027] Figure 1 The structural schematic diagram of one perspective of a filter provided by some embodiments of the present utility model is shown;

[0028] Figure 2 The structural schematic diagram of another perspective of a filter provided by some embodiments of the present utility model is shown;

[0029] Figure 3 Shown is Figure 2 The cross-sectional view of the A-A part in

[0030] Figure 4 Shown is Figure 2 The cross-sectional view of the B-B part in

[0031] Figure 5 The structural schematic diagram of one perspective of the base in a filter provided by some embodiments of the present utility model is shown.

[0032] Main element symbol description:

[0033] 100 - Body; 110 - Cavity; 200 - Resonant component; 300 - Metal part; 310 - Through hole; 400 - First debugging screw; 120 - Base; 130 - Cover; 121 - Receiving groove; 500 - Insulating support; 600 - First debugging nut; 700 - Coupling rod; 800 - Second debugging nut; 210 - Resonant rod; 220 - Second debugging screw; 211 - Second groove; 230 - Third debugging nut. Detailed implementation manners

[0034] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes.

[0036] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can 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 present utility model can be understood according to specific situations.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise clearly and specifically defined.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] As Figures 1 to 3 shown, some embodiments of the present utility model provide a filter, which is mainly used to improve the sensitivity of coupling amount adjustment and increase the range of coupling adjustment to meet different needs of users during use.

[0040] The filter includes a body 100, a resonant component 200, a metal part 300 and a first debugging screw 400.

[0041] Among them, the body 100 defines a cavity 110. It should be noted that the shape of the cavity 110 can be any one or a combination of two or more of a prism shape, a cylinder shape, a spherical shape, an ellipsoidal shape or a special shape, and can be specifically set according to actual situations.

[0042] In addition, in this embodiment, there are multiple sets of resonant components 200, and the multiple sets of resonant components 200 are housed in the cavity 110, and the multiple sets of resonant components 200 are arranged at intervals in sequence along the first direction. It can be understood that the number of sets of resonant components 200 can be two or any value above two, and can be specifically set according to the actual situation.

[0043] In some embodiments, the multiple sets of resonant components 200 are arranged at equal intervals along the first direction.

[0044] It should be noted that the first direction refers to the length direction of the body 100.

[0045] In this embodiment, taking three sets of resonant components 200 as an example, the following specific description is given.

[0046] By arranging the metal part 300 in the cavity 110, and the metal part 300 is arranged at intervals from the resonant component 200, along the second direction, the metal part 300 is provided with a through hole 310, and the through hole 310 penetrates the metal part 300 along the second direction.

[0047] Preferably, in this embodiment, the through hole 310 is arranged in the middle of the metal part 300.

[0048] Wherein, the second direction refers to the thickness direction of the body 100, and the first direction is perpendicular to the second direction.

[0049] It should be noted that, in this embodiment, the metal part 300 is a conductive metal part 300.

[0050] By movably connecting the first debugging screw 400 with the body 100 along the second direction, it can be understood that the first debugging screw 400 can move relative to the body 100 along the second direction to adjust the relative position between the first debugging screw 400 and the metal part 300.

[0051] Specifically, one end of the first debugging screw 400 is inserted through one side of the body 100 and inserted into the cavity 110, and one end of the first debugging screw 400 is at least partially housed in the through hole 310, and there is a gap between the first debugging screw 400 and the hole wall of the through hole 310.

[0052] Furthermore, the axis of the through hole 310 coincides with the axis of the first debugging screw 400, and both are parallel to the second direction.

[0053] Along the third direction, there is a gap between the metal part 300 and the resonant component 200. It should be noted that the third direction refers to the width direction of the body 100.

[0054] Specifically, the first direction, the second direction, and the third direction are perpendicular to each other.

[0055] In this embodiment, the metal part 300 is connected to the main body 100 through the insulating support 500, so as to form an insulating isolation effect between the metal part 300 and the main body 100 through the insulating support 500, and the metal part 300 is arranged at intervals from the resonant component 200, thereby forming a cross-cavity transmission zero point in the cavity 110 inside the main body 100. By providing a through hole 310 on the metal part 300 and adjusting the first debugging screw 400 to move in the second direction to realize the change of the strength of the coupling zero point, the design requirements of the filter product can be met, and the adjustment range, sensitivity and adjustment efficiency can be improved.

[0056] As Figure 3 and Figure 4 shown, in some embodiments of the present invention, the main body 100 includes a base 120 and a cover 130.

[0057] Among them, the connection method between the base 120 and the cover 130 includes any one of threaded connection, bolt connection, clamping connection, bonding or integral molding, and can be specifically set according to the actual situation.

[0058] In this implementation, the base 120 and the cover 130 are connected by bolts, so as to ensure the stability of the connection between the base 120 and the cover 130 while improving the installation or disassembly efficiency between the base 120 and the cover 130, so as to facilitate maintenance or replacement.

[0059] In addition, the base 120 is provided with a receiving groove 121, the resonant component 200 is arranged in the receiving groove 121 and connected to the base 120, and the cover 130 is connected to the base 120 and covers the receiving groove 121 to define the cavity 110 between the base 120 and the cover 130.

[0060] As Figure 5 shown, in some embodiments of the present invention, there are two insulating supports 500, and the two insulating supports 500 are respectively arranged at both ends of the metal part 300 along the first direction, so as to provide support and fixation for the metal part 300 through the insulating supports 500 to ensure the stability of the metal part 300 in the cavity 110.

[0061] In addition, the insulating support 500 can be any one of an insulating support rod, an insulating support table, an insulating support column or an insulating support seat.

[0062] Specifically, along the second direction, one end of the insulating support member 500 is connected to the base 120, and the other end of the insulating support member 500 is connected to the metal member 300. Among them, the connection manner between the insulating support member 500 and the metal member 300 includes any one of snap connection, bonding, screw connection, and bolt connection.

[0063] In this embodiment, the metal member 300 and the insulating support member 500 are bolt-connected. It can be understood that by detachably connecting the metal member 300 and the insulating support member 500, not only can the connection stability between the insulating support member 500 and the metal member 300 be improved, but also the installation or disassembly efficiency between the insulating support member 500 and the metal member 300 can be improved, so as to facilitate maintenance, adjustment, or replacement.

[0064] As Figures 1 to 3 shown, in some embodiments of the present utility model, a first debugging nut 600 is provided on the side of the cover body 130 facing away from the base 120. The first debugging nut 600 is threadedly connected to the first debugging screw 400 to provide a limiting and fixing effect on the first debugging screw 400 through the first debugging nut 600, so as to ensure the connection stability between the first debugging screw 400 and the cover body 130, and avoid the first debugging screw 400 from moving along the second direction under its own gravity, thereby ensuring the relative position stability between the first debugging screw 400 and the metal member 300, and ensuring the accuracy of adjusting the strength change of the coupling zero point.

[0065] As Figure 1 and Figure 4 shown, in some embodiments of the present utility model, a coupling rod 700 is provided between two adjacent resonance components 200. There is a gap between the coupling rod 700 and the resonance component 200, and one end of the coupling rod 700 passes through the cover body 130, and the coupling rod 700 is threadedly connected to the cover body 130.

[0066] It should be noted that the axis of the coupling rod 700 is parallel to the second direction, so that the coupling rod 700 can adjust its position on the cover body 130 along the second direction.

[0067] In this embodiment, the coupling amount of the cavity 110 can be flexibly fine-tuned by adjusting the depth of the coupling rod 700 entering the cavity 110.

[0068] By threadedly connecting the coupling rod 700 to the cover body 130, not only can the connection stability between the coupling rod 700 and the cover body 130 be ensured, but also the convenience and efficiency of adjusting the coupling rod 700 can be improved to meet the needs of users.

[0069] As Figure 1 and Figure 2As shown, in some embodiments of the present utility model, a second adjustment nut 800 is provided on a side of the cover body 130 facing away from the base 120. The second adjustment nut 800 is threadedly connected to the coupling rod 700. It should be noted that the second adjustment nut 800 abuts against the side of the cover body 130 facing away from the base 120.

[0070] The second adjustment nut 800 provides a limiting and fixing effect on the coupling rod 700 to further improve the stability of the connection between the coupling rod 700 and the cover body 130, and prevent the coupling rod 700 from moving along the second direction under the action of its own gravity.

[0071] As Figure 1 and Figure 4 shown, in some embodiments of the present utility model, the resonant assembly 200 includes a resonant rod 210 and a second adjustment screw 220. There is a gap between the resonant rod 210 and the second adjustment screw 220.

[0072] Wherein, one end of the resonant rod 210 is connected to the base 120, and a second groove 211 is provided at an end of the resonant rod 210 facing the cover body 130.

[0073] In this embodiment, the second groove 211 is a cylindrical groove, and the axis of the second groove 211 coincides with the axis of the resonant rod 210 and is parallel to the second direction. There is a gap between the end of the resonant rod 210 facing the cover body 130 and the cover body 130.

[0074] In addition, one end of the second adjustment screw 220 is inserted through the cover body 130 along the second direction and at least partially inserted into the second groove 211. There is a gap between the second adjustment screw 220 and the groove wall of the second groove 211, and the axis of the second adjustment screw 220 coincides with the axis of the resonant rod 210.

[0075] In this embodiment, threadedly connecting the second adjustment screw 220 to the cover body 130 can not only ensure the stability of the connection between the second adjustment screw 220 and the cover body 130, but also improve the convenience and efficiency of adjusting the second adjustment screw 220 to meet the needs of users.

[0076] As Figure 1 and Figure 4 shown, in some embodiments of the present utility model, the resonant assembly 200 further includes a third adjustment nut 230.

[0077] Among them, the third adjustment nut 230 is arranged on the side of the cover body 130 away from the base 120 and is threadedly connected to the second adjustment screw rod 220, so as to provide a limiting and fixing effect on the second adjustment screw rod 220 through the third adjustment nut 230, so as to further improve the connection stability between the second adjustment screw rod 220 and the cover body 130 and prevent the second adjustment screw rod 220 from moving along the second direction under the action of its own gravity.

[0078] It can be understood that the third adjustment nut 230 abuts against the cover body 130.

[0079] Such as Figure 5 As shown, in some embodiments of the present invention, along the first direction, the distance from the axis of the through hole 310 to the axes of the two insulating support members 500 is equal, so as to improve the accuracy and stability of the change in the strength of the coupling zero point during the process of adjusting the first adjustment screw rod 400 to move along the second direction.

[0080] It should be noted that the axes of the first adjustment screw rod 400, the second adjustment screw rod 220, the resonant rod 210, and the coupling rod 700 are all parallel to the second direction.

[0081] The filter provided by the present invention not only has a large adjustment range for the strength of the capacitor, but also is simple to operate, convenient to adjust, and has high adjustment efficiency.

[0082] In all the examples shown and described here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0083] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0084] The above-described embodiments merely represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A filter, characterized in that: include: The body defines the cavity; A plurality of resonant components are contained in the cavity and arranged at intervals along a first direction; A metal member and an insulating support member are arranged in the cavity, the metal member is connected to the body through the insulation, and is arranged spaced apart from the resonant component, and a through hole is opened in the metal member along the second direction; A first debugging screw rod is movably connected to the body along the second direction, one end of the first debugging screw rod is inserted into the cavity, and one end of the first debugging screw rod is at least partially received in the through hole; The first direction is perpendicular to the second direction.

2. The filter according to claim 1, characterized in that The body comprises a base and a cover; The base is provided with a receiving groove, and the cover is connected to the base and covers the receiving groove to define the cavity between the base and the cover.

3. The filter according to claim 2, characterized in that There are two insulating support members, and the two insulating support members are respectively arranged at two ends of the metal member along the first direction; Along the second direction, one end of the insulating support member is connected to the base, and the other end of the insulating support member is connected to the metal member.

4. The filter according to claim 3, characterized in that Along the first direction, the distances from the axis of the through hole to the axes of the two insulating support members are equal.

5. The filter according to claim 2, characterized in that A first debugging nut is provided on a side of the cover body facing away from the base, and the first debugging nut is threadedly connected to the first debugging screw.

6. The filter according to claim 2, characterized in that A coupling rod is arranged between two adjacent resonant components, and one end of the coupling rod is passed through the cover body and is threadedly connected to the cover body.

7. The filter according to claim 6, characterized in that A second debugging nut is provided on a side of the cover body facing away from the base, and the second debugging nut is threadedly connected to the coupling rod.

8. The filter according to any one of claims 2 to 7, characterized in that The resonance assembly comprises a resonance rod and a second adjustment screw rod; One end of the resonance rod is connected to the base, and one end of the resonance rod facing the cover is provided with a second groove; One end of the second debugging screw rod is passed through the cover body and at least partially inserted into the second groove, and the second debugging screw rod is threadedly connected to the cover body.

9. The filter according to claim 8, characterized in that The resonant assembly also includes a third debugging nut; The third debugging nut is arranged on a side of the cover body away from the base and is threadedly connected with the second debugging screw.

10. The filter according to claim 1, characterized in that The resonant components are divided into three groups, and the three groups of resonant components are arranged at equal intervals along the first direction.

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