Filter

Abstract

The present application relates to the field of communication technology and provides a filter, which includes: a cavity having a through hole connected to the interior of the cavity; a signal transmission component disposed at the through hole; and a structural capacitor assembly, which includes a structural capacitor and a blocking component, wherein the structural capacitor is disposed in the through hole and connected to the signal transmission component; the blocking component is sealed in the through hole to prevent impurities in the cavity from entering the through hole. The filter provided by the present application can prevent impurities in the cavity from entering the through hole and interfering with the signal transmission component and the structural capacitor, thereby affecting the intermodulation of the filter, thereby effectively reducing the impact of the installation of the structural capacitor on the intermodulation of the filter and improving the stability of the filter.

Description

Technical Field

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

[0002] There are cases where structural capacitors are needed in filters to achieve the function of blocking DC and passing AC.

[0003] During the process of implementing the technical solution of the present application, the inventors discovered that after installing structural capacitors in the filter, intermodulation interference is likely to occur, affecting the intermodulation results and thus affecting the normal operation of the filter. Summary of the Invention

[0004] The purpose of the present application is to provide a filter to improve the technical problem in the related art that the filter installation structure capacitance affects the intermodulation.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a filter, which includes: a cavity, a through hole connected to the inside of the cavity is opened on the cavity; a signal transmission component, the signal transmission component is arranged at the through hole; and a structural capacitor assembly, the structural capacitor assembly includes a structural capacitor and a blocking component, the structural capacitor is arranged in the through hole, and the structural capacitor is connected to the signal transmission component; the blocking component blocks the through hole to prevent impurities inside the cavity from entering the through hole.

[0006] In one embodiment, the signal transmission component is provided at an opening of the through hole away from the interior of the cavity, and the blocking component is used to block impurities in the cavity from entering a side of the through hole away from the interior of the cavity.

[0007] In one embodiment, there are two blocking members, which are respectively located at opposite ends of the through hole.

[0008] In one embodiment, the blocking member is located in the through hole and is sleeved on the structural capacitor; the shape of the outer peripheral wall of the blocking member is adapted to the shape of the inner peripheral wall of the through hole, and the outer peripheral wall of the blocking member is in contact with the inner peripheral wall of the through hole.

[0009] In one embodiment, the signal transmission component is arranged at the opening of the through hole away from the interior of the cavity, and the blocking component is used to block impurities inside the cavity from entering the side of the through hole away from the interior of the cavity; the blocking component is arranged at the opening of the through hole close to the interior of the cavity.

[0010] In one embodiment, the signal transmission component is arranged at the opening of the through hole away from the interior of the cavity, and the blocking component is used to block impurities inside the cavity from entering the side of the through hole away from the interior of the cavity; the structural capacitor assembly includes a supporting component, which is connected to the structural capacitor and supported on the inner wall of the through hole, and the supporting component is located between the signal transmission component and the blocking component.

[0011] In one embodiment, the structural capacitor includes: a first conductor, a first limiting portion is provided on the first conductor; a second conductor, a second limiting portion is provided on the second conductor, and the second limiting portion is spaced apart from the first limiting portion; and an insulating member, the insulating member blocking the second conductor and the first conductor; wherein the first conductor or the second conductor is connected to the signal transmission member; the blocking member is provided with a first limiting fitting portion and a second limiting fitting portion, the blocking member is sleeved on the first conductor and the second conductor, and the first limiting fitting portion is limitedly fitted with the first limiting portion, and the second limiting fitting portion is limitedly fitted with the second limiting portion to fix the first conductor and the second conductor; the blocking member is a circumferentially closed annular structure, the shape of the outer peripheral wall of the blocking member is adapted to the shape of the inner peripheral wall of the through hole, and the outer peripheral wall of the blocking member is in contact with the inner peripheral wall of the through hole.

[0012] In one embodiment, the blocking member includes at least two blocking blocks, and the blocking blocks are connected end to end in sequence to form a circumferentially closed annular structure.

[0013] In one embodiment, the outer side walls of the blocking blocks are connected end to end in sequence to form a circumferentially closed annular outer wall.

[0014] In one embodiment, the blocking block has a first sub-limiting fitting portion and a second sub-limiting fitting portion, and the first sub-limiting fitting portion of each blocking block cooperates to form the first limiting fitting portion, and the second sub-limiting fitting portion of each blocking block cooperates to form the second limiting fitting portion.

[0015] In one embodiment, the ends of the blocking blocks are plug-fitted into each other.

[0016] In one embodiment, a protrusion is provided on the end surface of one end of the blocking block, and a recess is provided on the end surface of the other end of the blocking block, wherein the protrusion on one blocking block is plugged into the recess on the other blocking block.

[0017] In one embodiment, opposite ends of the protrusion along the radial direction of the blocking member are respectively connected to the inner side wall and the outer side wall of the blocking block, and opposite ends of the recessed portion along the radial direction of the blocking member respectively penetrate the inner side wall and the outer side wall of the blocking block.

[0018] In one embodiment, the protrusion is a tapered structure whose width gradually decreases from one end close to the end face of the blocking block to the end away from the end face of the blocking block, and the recessed portion is a gradually expanding structure whose width gradually increases from the inner bottom of the recessed portion to the end face of the blocking block.

[0019] In one embodiment, a snap-fit structure is provided on the protruding portion, and a snap-fit structure is provided on the recessed portion, and the snap-fit structure is snap-fitted with the snap-fit structure.

[0020] In one embodiment, the snap-fit structure is provided along the length direction of the protruding portion, and the snap-fitting structure is provided along the length direction of the recessed portion.

[0021] In one embodiment, a first plug-in portion and a first plug-in fitting portion are provided on the end face of one end of the blocking block, and a second plug-in portion and a second plug-in fitting portion are provided on the end face of the other end of the blocking block, the first plug-in portion and the second plug-in fitting portion are located on the same side of the blocking block, and the first plug-in fitting portion and the second plug-in fitting portion are located on the other side of the blocking block; the first plug-in portion on one blocking block is plugged into the first plug-in fitting portion on the other blocking block, and the second plug-in portion on one blocking block is plugged into the second plug-in fitting portion on the other blocking block.

[0022] In one embodiment, a step structure is provided on an end surface of one end of the blocking block and / or an end surface of the other end of the blocking block.

[0023] In one embodiment, a first step structure is provided on the end surface of one end of the blocking block, and a second step structure is provided on the end surface of the other end of the blocking block; the first step structure on one blocking block matches the first step structure on the other blocking block, and the second step structure on one blocking block matches the second step structure on the other blocking block; or, the first step structure on one blocking block matches the second step structure on the other blocking block.

[0024] In one embodiment, the first step structure includes a first step surface, a second step surface lower than the first step surface, and a first inclined surface connected to the first step surface and the second step surface, wherein the first step surface, the first inclined surface and the second step surface on one blocking block respectively match the second step surface, the first inclined surface and the first step surface on the other blocking block; and / or, the second step structure includes a third step surface, a fourth step surface lower than the third step surface, and a second inclined surface connected to the third step surface and the fourth step surface, wherein the third step surface, the second inclined surface and the fourth step surface on one blocking block respectively match the fourth step surface, the second inclined surface and the third step surface on the other blocking block.

[0025] In one embodiment, a plug-in portion is provided on one of the first step surface and the second step surface, and a plug-in fitting portion is provided on the other of the first step surface and the second step surface; the plug-in portion on one of the blocking blocks is plugged into the plug-in fitting portion on the other of the blocking blocks; and / or, a plug-in portion is provided on one of the third step surface and the fourth step surface, and a plug-in fitting portion is provided on the other of the third step surface and the fourth step surface; the plug-in portion on one of the blocking blocks is plugged into the plug-in fitting portion on the other of the blocking blocks.

[0026] In one embodiment, the blocking member includes a connecting portion, and opposite ends of the connecting portion are respectively connected to one end of the two blocking blocks, so that the two blocking blocks can rotate relative to the connecting portion to open and close.

[0027] In one embodiment, the blocking blocks have the same structure.

[0028] In one embodiment, the blocking member includes two blocking blocks, which are spliced into a circumferentially closed annular structure; and the ends of the two blocking blocks are plugged into each other.

[0029] One or more of the above technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0030] The filter provided in the embodiment of the present application is provided with a cavity, a signal transmission component and a structural capacitor assembly, and a through hole connected to the interior of the cavity is opened on the cavity, the signal transmission component is provided at the through hole, and a structural capacitor assembly is provided including a structural capacitor and a blocking component, and the structural capacitor is provided in the through hole and connected to the signal transmission component, so that the signal transmission component and the structural capacitor can be installed and matched on the cavity, so as to facilitate the signal transmission component to transmit signals with the interior of the cavity through the structural capacitor; at the same time, by providing a blocking component to seal the through hole to block impurities inside the cavity from entering the through hole, impurities inside the cavity can be prevented from entering the through hole to interfere with the signal transmission component and the structural capacitor and affect the intermodulation of the filter, thereby effectively reducing the impact of the installation of the structural capacitor on the intermodulation of the filter and improving the stability of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 This is a schematic diagram of the structure of the capacitor and the fixing member used by the inventor;

[0033] Figure 2 for Figure 1 The right side view of the structure diagram of the middle structure capacitor and the fixing parts;

[0034] Figure 3 A schematic diagram of the structure of the filter provided in an embodiment of the present application;

[0035] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in FIG;

[0036] Figure 5 A schematic diagram of the structure of a capacitor assembly provided in an embodiment of the present application;

[0037] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure in the BB direction;

[0038] Figure 7 A schematic diagram of the exploded structure of a structural capacitor assembly provided in an embodiment of the present application;

[0039] Figure 8 A schematic diagram of the exploded structure of a blocking member provided in another embodiment of the present application;

[0040] Figure 9A schematic diagram of the structure of a blocking member and a structural capacitor provided in another embodiment of the present application;

[0041] Figure 10 for Figure 9 Schematic diagram of the exploded structure of the blocking member;

[0042] Figure 11 A schematic diagram of the exploded structure of a blocking member provided in another embodiment of the present application;

[0043] Figure 12 A schematic diagram of the structure of a blocking member and a structural capacitor provided in another embodiment of the present application;

[0044] Figure 13 for Figure 12 Schematic diagram of the exploded structure of the blocking member;

[0045] Figure 14 A schematic structural diagram of the cooperation between a blocking member and a structural capacitor provided in another embodiment of the present application.

[0046] Among them, the reference numerals in the figures are:

[0047] 01, fixing piece; 010, notch;

[0048] 100, filter; 10, cavity; 101, through hole; 1011, closed space; 20, signal transmission component; 21, inner core; 30, structural capacitor assembly; 31, structural capacitor; 32, blocking member; 33, supporting member; 311, first conductor; 3111, first limiting portion; 312, second conductor; 3121, second limiting portion; 313, insulating member; 321, first limiting matching portion; 322, second limiting matching portion; 320, blocking block; 3201, first sub-limiting matching portion; 3202, second sub-limiting matching portion; 3110, assembly hole; 3203a, protrusion; 3203b, recessed portion; 32 001, outer wall; 32002, inner wall; 32031, snap-fit structure; 32032, snap-fit structure; 3204a, first plug-in portion; 3204b, first plug-fitting portion; 3205a, second plug-in portion; 3205b, second plug-fitting portion; 3206, first step structure; 3207, second step structure; 32061, first step surface; 32062, second step surface; 32063, first inclined surface; 32071, third step surface; 32072, fourth step surface; 32073, second inclined surface; 3208a, plug-in portion; 3208b, plug-fitting portion; 323, connecting portion. DETAILED DESCRIPTION

[0049] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0050] In the description of this application, it should be understood that the terms "length", "width", "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 application 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 application.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0052] In this application, unless otherwise expressly specified or limited, terms such as "install," "assemble," "connect," "connect," and "fix" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0053] Filters are frequency-selective devices. Structural capacitors are sometimes required to block DC currents while passing AC currents. Structural capacitors are devices that replace capacitor components with mechanical structures to achieve the same function as capacitors.

[0054] In the process of realizing the invention of the technical solution of the present application, the inventor finds that after installing the structural capacitor in the filter, intermodulation interference is easily generated, affecting the filter intermodulation result, thereby affecting the normal operation of the filter. For this reason, the inventor conducts in-depth research, and creatively finds that, since the through-hole for the placement of the structural capacitor needs to be set on the cavity of the filter, the signal transmission part of the filter (the signal transmission part is the structural part for transmitting the signal, such as a connector, a connecting rod, a connecting piece, a tap part, a filter element, etc., wherein the filter element can be a low-pass, a high-pass, a band-pass, etc., but not limited to this) is located at the connection between the structural capacitor and the through-hole, and the through-hole is connected to the inside of the cavity, so the impurities inside the cavity (impurity refers to the retention inside the cavity, which can be various debris, residue, dust, etc. inside the cavity, such as metal debris, welding residues, etc. produced by component installation, but not limited to this) can enter the through-hole and interfere with the signal transmission part and the structural capacitor, such as when cleaning the inside of the cavity of the filter, the impurities inside the cavity can enter and hide in the through-hole, which is not only difficult to find, but also difficult to remove.

[0055] See also Figure 1 and Figure 2 The inventors previously employed a structural capacitor equipped with a fixing member 01 for securing the capacitor. This fixing member 01 had a notch 010 formed therein, allowing the structural capacitor to be locked into place. However, impurities within the cavity could enter the through-hole through the notch 010 or the gap between the fixing member 01 and the inner wall of the through-hole, interfering with the signal transmission element and the structural capacitor, thus affecting intermodulation. Furthermore, the obstruction of the fixing member 01 made it even more difficult to remove debris from the through-hole.

[0056] Based on this, in order to improve the technical problem in the related art that the filter installation structure capacitance affects the intermodulation, the inventors proposed the following solution.

[0057] See also Figures 3 to 5 The present invention provides a filter 100 for filtering a signal. The filter 100 may be a cavity filter, a simplexer, a duplexer, a splitter, a combiner, a tower-mounted amplifier, etc., but is not limited thereto. The filter 100 includes a cavity 10, a signal transmission element 20, and a structural capacitor assembly 30, wherein:

[0058] The cavity 10 may be provided with filter elements and other elements required for the operation of the filter 100. The cavity 10 is provided with a through hole 101 connected to the interior of the cavity 10. The through hole 101 may be provided on the side wall or bottom wall of the cavity 10, but is not limited thereto.

[0059] The signal transmission component 20 is provided at the through-hole 101. It should be understood that the signal transmission component 20 can be located outside the through-hole 101 and provided at the through-hole 101, or it can be located inside the through-hole 101. When the signal transmission component 20 is located outside the through-hole 101, one end of the signal transmission component 20 can extend into the through-hole 101, or be located at the opening of the through-hole 101 without extending into the through-hole 101. The signal transmission component 20 can be blocked in the through-hole 101, or it can not be blocked in the through-hole 101. It can be understood that the signal transmission component 20 is a structural component for transmitting signals, for example, it can be a connector, a connecting rod, a connecting piece, a tap component, a filter element, etc., wherein the filter element can be a low-pass, high-pass, band-pass, etc., but is not limited thereto.

[0060] The structural capacitor assembly 30 includes a structural capacitor 31 and a blocking member 32. The structural capacitor 31 is provided in the through hole 101, and the structural capacitor 31 is connected to the signal transmission member 20; the structural capacitor 31 can be connected to the signal transmission member 20 inside the through hole 101, or it can extend to the outside of the through hole 101 and be connected to the signal transmission member 20. The blocking member 32 is blocked in the through hole 101 to block impurities inside the cavity 10 from entering the through hole 101. Impurities refer to the residues inside the cavity 10, which can be various debris, residues, dust, etc. inside the cavity 10, such as metal debris, welding residues, etc. generated by component installation, but are not limited to this. It should be understood that the blocking member 32 can be blocked in the through hole 101 in various ways. For example, the blocking member 32 can be located inside the through hole 101 to block the through hole 101, or it can be located outside the through hole 101 to block the opening of the through hole 101; the blocking member 32 can be various structural members that can block the through hole 101. It is understandable that the structural capacitor 31 can adopt various existing structural capacitors or structural capacitors that are improved from existing structural capacitors.

[0061] The filter 100 provided in the embodiment of the present application is provided with a cavity 10, a signal transmission component 20 and a structural capacitor assembly 30, and a through hole 101 connected to the interior of the cavity 10 is opened on the cavity 10, the signal transmission component 20 is provided at the through hole 101, and the structural capacitor assembly 30 is provided including a structural capacitor 31 and a blocking member 32, the structural capacitor 31 is provided in the through hole 101 and connected to the signal transmission component 20, so that the signal transmission component 20 and the structural capacitor 31 can be installed and matched on the cavity 10, so as to facilitate the signal transmission component 20 to transmit signals with the interior of the cavity 10 through the structural capacitor 31; at the same time, by providing the blocking member 32 to block the through hole 101, it is used to prevent impurities inside the cavity 10 from entering the through hole 101, so as to prevent the interior of the cavity 10 from Impurities enter the through hole 101 and interfere with the signal transmission component 20 and the structural capacitor 31, thereby affecting the intermodulation of the filter 100; since the signal transmission component 20 is a carrier of signal transmission, when there is impurity interference at the signal transmission component 20 and the structural capacitor 31, it will affect the signal transmission, which may cause the effective transmission signal to be distorted, generate noise, and affect the normal operation of the filter 100, especially when the signal transmission component 20 is a connector, which transmits signals between the external device and the inside of the cavity 10. When there is impurity interference at the inner core of the connector and the structural capacitor 31, the impact on the signal transmission is greater; and by adopting the above-mentioned technical solution provided by the present application, the impact of the installation of the structural capacitor on the intermodulation of the filter 100 can be effectively reduced, thereby improving the stability of the filter 100.

[0062] In one embodiment, see Figure 3 and Figure 4 The signal transmission component 20 is disposed at the opening of the through hole 101 away from the interior of the cavity 10. It is understood that the signal transmission component 20 can be located outside the through hole 101 and disposed at the opening of the through hole 101 away from the interior of the cavity 10, or it can be located inside the through hole 101 and disposed at the opening of the through hole 101 away from the interior of the cavity 10. The blocking member 32 is used to prevent impurities inside the cavity 10 from entering the side of the through hole 101 away from the interior of the cavity 10 (that is, the side close to the signal transmission component 20), so as to prevent impurities from interfering with the signal transmission component 20 and the structural capacitor 31, especially the connection between the signal transmission component 20 and the structural capacitor 31.

[0063] This arrangement can accommodate situations where one end of the through hole 101 communicates with the interior of the cavity 10, while the other end faces away from the interior of the cavity 10. This facilitates the signal transmission component 20 blocking the opening of the through hole 101 facing away from the interior of the cavity 10, and also facilitates the signal transmission component 20 being located outside the cavity 10. In this case, only one blocking member 32 can be provided, but of course, multiple blocking members 32 can also be provided.

[0064] For example, see Figure 3 and Figure 4The signal transmission component 20 can be a connector. The connector can be located at one end of the through hole 101 that is away from the inside of the cavity 10, and seal the opening of the through hole 101 that is away from the inside of the cavity 10. The inner core 21 of the connector can extend into the through hole 101 and be connected to one end of the structural capacitor 31. The inner core 21 is the inner conductor of the connector for transmitting signals. It can be understood that the part where the structural capacitor 31 is connected to the inner core 21 can be connected to the inner core 21 as a separate molding setting, or it can be an integrated structure integrally molded with the inner core 21. The connector, the blocking member 32 and the inner wall of the through hole 101 enclose a closed space 1011, and the connection between the inner core 21 of the connector and the structural capacitor 31 is located in the closed space 1011. The blocking member 32 is used to prevent impurities inside the cavity 10 from entering the closed space 1011.

[0065] In this way, the closed space 1011 can protect the connection between the inner core 21 of the connector and the structural capacitor 31, and the blocking member 32 can prevent impurities inside the cavity 10 from entering the closed space 1011 and interfering with the connection between the inner core 21 and the structural capacitor 31, thereby improving the stability of signal transmission between the connector and the structural capacitor 31.

[0066] Optionally, the connector can be provided outside the cavity 10 and connected to the cavity 10. Of course, in some other embodiments, the connector can also be connected to the cover of the filter 100, with its inner core 21 extending into the through-hole 101. It can be understood that the connector is a carrier for transmitting signals, used to transmit signals from an external device to the filter 100, or transmit signals from the filter 100 to an external device. The connector can be various types of connectors used to be provided on the filter, such as a BMA connector (blind mate connector), an SMA connector, an SMP connector, an MBX connector, a PSMP connector, a TX connector, etc., but is not limited thereto.

[0067] In some other embodiments, there may be two blocking members 32 , and the two blocking members 32 respectively block opposite ends of the through hole 101 .

[0068] With this arrangement, both ends of the through hole 101 can be blocked by the blocking member 32 , so that impurities inside the cavity 10 cannot enter the through hole 101 from either end of the through hole 101 ; this is particularly suitable for the situation where both ends of the through hole 101 are connected to the interior of the cavity 10 .

[0069] In one embodiment, see Figure 3 and Figure 4The end of the structural capacitor 31 that is away from the signal transmission component 20 can extend into the interior of the cavity 10 and can be connected or coupled to the components inside the cavity 10 to achieve signal transmission. For example, it can be connected or coupled to the resonant rod inside the cavity 10, and can also be connected or coupled to the filtering component (such as low-pass, high-pass, etc., but not limited to this) inside the cavity 10, but not limited to this. Of course, in some other embodiments, the end of the structural capacitor 31 that is away from the signal transmission component 20 can also be located in the through hole 101 and not extend into the interior of the cavity 10.

[0070] In one embodiment, see Figure 3 and Figure 4 The blocking member 32 is located in the through hole 101 and is mounted on the structural capacitor 31. The blocking member 32 can be mounted on any part of the structural capacitor 31. The outer peripheral wall of the blocking member 32 contacts the inner peripheral wall of the through hole 101 to prevent impurities inside the cavity 10 from entering the through hole 101 through the gap between the outer peripheral wall of the blocking member 32 and the inner peripheral wall of the through hole 101. The shape of the outer wall of the blocking member 32 is adapted to the shape of the inner wall of the through hole 101. The outer wall of the blocking member 32 can be annular (i.e., the outer contour of the cross section perpendicular to the axial direction of the blocking member 32 is annular). Correspondingly, in this case, the inner wall of the through hole 101 can be a circular inner wall (i.e., the outer contour of the cross section perpendicular to the axial direction of the through hole 101 is circular). The outer wall of the blocking member 32 can also be frame-shaped (i.e., the outer contour of the cross section perpendicular to the axial direction of the blocking member 32 is polygonal). Correspondingly, in this case, the inner wall of the through hole 101 is a frame-shaped inner wall (i.e., the outer contour of the cross section perpendicular to the axial direction of the through hole 101 is polygonal). In this embodiment, the blocking member 32 is located inside the through hole 101 and blocks the through hole 101. The blocking member 32 is an insulating blocking member, i.e., a blocking member made of an insulating material.

[0071] With this arrangement, since the blocking member 32 is sleeved on the structural capacitor 31 and the outer peripheral wall of the blocking member 32 contacts the inner peripheral wall of the through hole 101, the blocking member 32 not only supports the structural capacitor 31 to improve the stability of the structural capacitor 31 in the through hole 101 and insulates the structural capacitor 31 from the inner wall of the through hole 101, but also prevents impurities inside the cavity 10 from entering the enclosed space 1011 along the gap between the outer peripheral wall of the blocking member 32 and the inner peripheral wall of the through hole 101, thereby blocking the through hole 101. Therefore, the same structure can achieve multiple functions, effectively simplifying the structure and reducing the space occupied by the cavity 10.

[0072] Alternatively, in one embodiment, see Figure 3 and Figure 4 The blocking member 32 is disposed at the opening of the through hole 101 close to the interior of the cavity 10 .

[0073] Such a setting can effectively reduce the distance between the blocking member 32 and the end edge of the opening of the through hole 101 close to the inside of the cavity 10, thereby reducing the possibility of impurities inside the cavity 10 being retained on the side of the through hole 101 close to the opening inside the cavity 10, so as to avoid impurities interfering with the end of the structural capacitor 31 close to the inside of the cavity 10, thereby further improving the problem of impurities inside the cavity 10 affecting intermodulation.

[0074] Of course, there may also be a certain distance between the blocking member 32 and the edge of the opening of the through hole 101 close to the inside of the cavity 10. In this case, impurities inside the cavity 10 still cannot cross the blocking member 32 and enter the side of the through hole 101 away from the inside of the cavity 10.

[0075] It should be noted that the blocking member 32 is not limited to being located inside the through hole 101 to block the through hole 101. In other embodiments, the blocking member 32 may be located outside the through hole 101 to block the through hole 101. For example, the blocking member 32 may be located at the opening of the through hole 101 close to the interior of the cavity 10 to block the opening.

[0076] In one embodiment, see Figure 4 and Figure 5 The structural capacitor assembly 30 includes a support member 33, which is connected to the structural capacitor 31 and supported on the inner peripheral wall of the through hole 101. The support member 33 is located between the signal transmission member 20 and the blocking member 32. Optionally, the support member 33 can be an annular structure with a notch to facilitate interlocking with the structural capacitor 31 through the notch. Of course, the support member 33 can also be an annular structure without a notch. For example, the support member 33 can adopt the same structure as the blocking member 32.

[0077] With this arrangement, the support member 33 and the blocking member 32 can support the structural capacitor 31 from both sides, preventing the structural capacitor 31 from deflecting or moving, thereby improving the stability of the structural capacitor 31 in the through hole 101. Furthermore, when the support member 33 adopts the same structure as the blocking member 32, it can also block the through hole 101 to block impurities inside the cavity 10.

[0078] In one embodiment, see Figures 4 to 6The structural capacitor 31 includes a first conductor 311, a second conductor 312, and an insulating member 313. A first limiting portion 3111 is provided on the first conductor 311; a second limiting portion 3121 is provided on the second conductor 312. The second limiting portion 3121 is spaced apart from the first limiting portion 3111 so that the second limiting portion 3121 is insulated from the first limiting portion 3111. The insulating member 313 is blocked between the second conductor 312 and the first conductor 311 so that the second conductor 312 is insulated from the first conductor 311 and a capacitor is formed with the insulating member 313 as a medium. The first conductor 311 or the second conductor 312 is connected to the signal transmission member 20. The blocking member 32 is provided with a first limiting fitting portion 321 and a second limiting fitting portion 322. The blocking member 32 is sleeved on the first conductor 311 and the second conductor 312, and the first limiting fitting portion 321 is limitedly fitted with the first limiting portion 3111, and the second limiting fitting portion 322 is limitedly fitted with the second limiting portion 3121 to fix the first conductor 311 and the second conductor 312. The blocking member 32 is a circumferentially closed annular structure, where circumferential closure means circumferential connection without disconnection. The shape of the outer peripheral wall of the blocking member 32 is adapted to the shape of the inner peripheral wall of the through hole 101, and the outer peripheral wall of the blocking member 32 is in contact with the inner peripheral wall of the through hole 101 to prevent impurities inside the cavity 10 from entering the through hole 101 through the gap between the outer peripheral wall of the blocking member 32 and the inner peripheral wall of the through hole 101.

[0079] With such arrangement, the first conductor member 311 and the second conductor member 312 can form a capacitor with the insulating member 313 as the medium. At the same time, the first limiting fitting portion 321 of the blocking member 32 is limitedly matched with the first limiting portion 3111, and the second limiting fitting portion 322 is limitedly matched with the second limiting portion 3121. That is, the first conductor member 311 and the second conductor member 312 can be fixed by the blocking member 32 to make their positions relatively stable, avoid loosening, and improve the stability of signal transmission. The blocking member 32 can serve as a fixing member of the structural capacitor 31 to fix and support the structural capacitor 31. In addition, by setting the blocking member 32 as a circumferentially closed annular structure, and the blocking member 32 is The outer wall of the blocking member 32 is in contact with the inner wall of the through hole 101, which can prevent impurities inside the cavity 10 from entering the side of the through hole 101 away from the interior of the cavity 10 from between the outer wall of the blocking member 32 and the inner wall of the through hole 101; therefore, the blocking member 32 not only plays the role of fixing and supporting the structural capacitor 31 to improve the stability of the structural capacitor 31 in the through hole 101, but also plays the role of blocking impurities inside the cavity 10 from entering the through hole 101 and affecting intermodulation, so as to improve the stability of the filter; therefore, multiple functions can be achieved through the same blocking member 32, and the through hole 101 can be blocked on the basis of fixing the structural capacitor 31, the structure is simpler, and it occupies less space in the cavity 10.

[0080] Alternatively, in one embodiment, see Figures 4 to 7 The first limiting portion 3111 and the second limiting portion 3121 can both be flange structures, and the first limiting matching portion 321 and the second limiting matching portion 322 can also both be flange structures. The first limiting matching portion 321 and the second limiting matching portion 322 can be located on both sides of the first limiting portion 3111 and the second limiting portion 3121 respectively, and the first limiting portion 3111 and the second limiting portion 3121 are limited between the first limiting matching portion 321 and the second limiting matching portion 322.

[0081] It should be noted that the manner in which the first position-limiting matching portion 321 and the first position-limiting portion 3111 are position-limitingly matched, and the manner in which the second position-limiting matching portion 322 and the second position-limiting portion 3121 are position-limitingly matched is not limited to the manner described above.

[0082] Optionally, in some other embodiments, the first limiting portion 3111 and the second limiting portion 3121 can both be groove structures, the first limiting fitting portion 321 and the second limiting fitting portion 322 can both be flange structures, and the first limiting fitting portion 321 and the second limiting fitting portion 322 can be respectively embedded in the first limiting portion 3111 and the second limiting portion 3121 to achieve limiting fitting.

[0083] Optionally, in some other embodiments, the first limiting portion 3111 may be a flange structure, and the second limiting portion 3121 may be a groove structure; in this case, the first limiting fitting portion 321 may be a flange structure or a groove structure, and the second limiting fitting portion 322 may be a flange structure or a groove structure.

[0084] In one embodiment, see Figure 5 and Figure 6 The first conductor 311 has an assembly hole 3110, and a first stopper 3111 is disposed on the first conductor 311 near the opening of the assembly hole 3110. One end of the second conductor 312 is inserted into the assembly hole 3110, and the second stopper 3121 is located outside the assembly hole 3110. The insulating member 313 can be located in the assembly hole 3110 and sleeved over the second conductor 312 to achieve insulation between the second conductor 312 and the inner wall of the assembly hole 3110. For example, the insulating member 313 can be an insulating sleeve, one end of which can extend to the outside of the assembly hole 3110 and be protruding with a flange structure. The flange structure is blocked between the first stopper 3111 and the second stopper 3121, thereby achieving insulation between the first stopper 3111 and the second stopper 3121.

[0085] It should be noted that the method for insulating the first limiting portion 3111 from the second limiting portion 3121 is not limited to the above method. Alternatively, in some other embodiments, the insulating member 313 may not extend outside the assembly hole 3110. For example, the blocking member 32 may be provided with a protruding partition, which is blocked between the first limiting portion 3111 and the second limiting portion 3121 to achieve insulation between the first limiting portion 3111 and the second limiting portion 3121.

[0086] It should also be noted that the matching manner between the first conductive member 311 , the second conductive member 312 and the insulating member 313 is not limited to this.

[0087] Optionally, in some other embodiments, the second conductor 312 may have an assembly hole, the second limiting portion 3121 is arranged on the second conductor 312 near the opening of the assembly hole, one end of the first conductor 311 can be inserted into the assembly hole, and the first limiting portion 3111 is located outside the assembly hole.

[0088] Optionally, in some other embodiments, the first conductor 311 and the second conductor 312 may not be plugged in. For example, the end face of the first conductor 311 and the end face of the second conductor 312 may be arranged opposite to each other, and the insulating member 313 may directly block the end face of the first conductor 311 and the end face of the second conductor 312 to achieve insulation.

[0089] In one embodiment, see Figure 4 、 Figure 5 and Figure 7 , the blocking member 32 includes at least two blocking blocks 320, which can be two, three or more than three. The blocking blocks 320 are connected end to end in sequence to form a circumferentially closed annular structure; wherein the circumferential closure refers to being circumferentially connected without disconnection. Optionally, the blocking blocks 320 can be rigid blocking blocks to improve the fixing effect and support effect on the structural capacitor 31. It can be understood that the blocking blocks 320 can be spliced into a circumferentially closed annular structure by various connection methods, for example, two adjacent blocking blocks 320 can be plugged in and matched, for example, two adjacent blocking blocks 320 can be fixed to each other by fasteners, for example, each blocking block 320 can be tightened by a clamping member such as a hoop, but is not limited to this.

[0090] In this way, by setting the blocking member 32 to include multiple blocking blocks 320 connected end to end, each blocking block 320 can be directly buckled on the first conductor member 311 and the second conductor member 312 from the outside and spliced into a circumferentially closed annular structure, which is convenient for assembly with the structural capacitor 31, improves convenience, and is convenient for splicing into a circumferentially closed annular structure and cooperating with the inner wall of the through hole 101 to block impurities inside the cavity 10 from passing through.

[0091] Alternatively, in one embodiment, see Figure 5 and Figure 7 The outer walls 32001 of each blocking block 320 are connected end to end in sequence to form a circumferentially closed annular outer peripheral wall. It can be understood that the outer walls 32001 of each blocking block 320 are connected end to end in sequence, which means that the outer walls 32001 of each blocking block 320 can be connected to form a substantially circumferentially closed annular outer peripheral wall, and does not specifically mean that the outer walls 32001 of each blocking block 320 must be tightly connected. Due to factors such as processing tolerances, the outer walls 32001 of each blocking block 320 may not be completely connected. For example, there may be a small gap between the outer walls 32001 of two adjacent blocking blocks 320. As long as the small gap can prevent impurities from passing through the cavity 10, there is no effect and the function of blocking impurities can still be achieved.

[0092] Such a configuration can form a circumferentially closed annular outer wall of the blocking member 32, so as to facilitate contact with the inner wall of the through hole 101 to seal the through hole 101, and prevent impurities inside the cavity 10 from entering the through hole 101 through the outer wall of the blocking member 32 and the inner wall of the through hole 101.

[0093] Alternatively, in one embodiment, see Figure 7 The blocking block 320 has a first sub-limiting mating portion 3201 and a second sub-limiting mating portion 3202. The first sub-limiting mating portion 3201 of each blocking block 320 cooperates to form a first limiting mating portion 321; the first sub-limiting mating portion 3201 of each blocking block 320 cooperates with the first limiting portion 3111. The second sub-limiting mating portion 3202 of each blocking block 320 cooperates to form a second limiting mating portion 322; the second sub-limiting mating portion 3202 of each blocking block 320 cooperates with the second limiting portion 3121.

[0094] In this way, when the blocking blocks 320 are connected end to end in sequence to form a circumferentially closed annular structure, the first sub-limiting matching part 3201 of each blocking block 320 can be matched to form a first limiting matching part 321 for limiting matching with the first limiting part 3111, and the second sub-limiting matching part 3202 of each blocking block 320 can be matched to form a second limiting matching part 322 for limiting matching with the second limiting part 3121.

[0095] Of course, in some other embodiments, one or more of the at least two blocking blocks 320 may have a first sub-limiting fitting portion 3201 and a second sub-limiting fitting portion 3202, while the other one or more blocking blocks 320 may not have a first sub-limiting fitting portion 3201 and a second sub-limiting fitting portion 3202.

[0096] Optionally, see Figure 6 and Figure 7 When the first position-limiting mating portion 321 is an annular flange structure, each first sub-position-limiting mating portion 3201 may be a sub-flange structure. When the blocking blocks 320 are connected end to end to form a circumferentially closed annular structure, the sub-flange structures of each blocking block 320 are also correspondingly connected to form an annular flange structure. Of course, the first position-limiting mating portion 321 may also be a non-closed flange structure, for example, it may include multiple discrete sub-flange structures arranged at intervals. Alternatively, when the first position-limiting mating portion 321 is an annular groove structure, each first sub-position-limiting mating portion 3201 may be a sub-groove structure. When the blocking blocks 320 are connected end to end to form a circumferentially closed annular structure, the sub-groove structures of each blocking block 320 are also correspondingly connected to form an annular groove structure. Of course, the first position-limiting mating portion 321 may also be a non-closed groove structure, for example, it may include multiple discrete sub-groove structures arranged at intervals.

[0097] Optionally, see Figure 6 and Figure 7 When the second position-limiting mating portion 322 is an annular flange structure, each second sub-position-limiting mating portion 3202 may be a sub-flange structure. When the blocking blocks 320 are connected end to end to form a circumferentially closed annular structure, the sub-flange structures of each blocking block 320 are also connected to form an annular flange structure. Of course, the second position-limiting mating portion 322 may also be a non-closed flange structure, for example, it may include multiple discrete sub-flange structures arranged at intervals. Alternatively, when the second position-limiting mating portion 322 is an annular groove structure, each second sub-position-limiting mating portion 3202 may be a sub-groove structure. When the blocking blocks 320 are connected end to end to form a circumferentially closed annular structure, the sub-groove structures of each blocking block 320 are also connected to form an annular groove structure. Of course, the second position-limiting mating portion 322 may also be a non-closed groove structure, for example, it may include multiple discrete sub-groove structures arranged at intervals.

[0098] In one embodiment, the ends of the blocking blocks 320 are pluggable. The pluggable fit can also be understood as a concave-convex fit. Optionally, one of the two blocking blocks 320 may have a protruding structure (such as a convex column, a protrusion, a bump, etc., but not limited to these) at one end, and a recessed structure (such as a slot, a hole, or a recessed space formed by the cooperation of multiple components) at one end of the other blocking block 320, with the protruding structure pluggable with the recessed structure. Alternatively, one end of one blocking block 320 may be directly inserted into the recessed structure provided at one end of the other blocking block 320.

[0099] Such a configuration facilitates quick and convenient connection between the blocking blocks 320, and the plug-in fit between the ends of the blocking blocks 320 makes it difficult for grooves or seams to form between adjacent blocking blocks 320, which is more conducive to splicing into a circumferentially closed annular structure.

[0100] In one embodiment, see Figure 7 , the structures of the blocking blocks 320 are the same, that is, the shapes and structures of the blocking blocks 320 are the same.

[0101] With such a configuration, it is only necessary to manufacture a blocking block 320 of one structure, and there is no need to manufacture multiple blocking blocks 320 with different structures separately, which makes production faster and has lower production costs than manufacturing multiple blocking blocks 320 with different structures separately; and it is only necessary to use the same material to assemble the blocking member 32, which can simplify the types of materials and help save costs.

[0102] Of course, in some other embodiments, the structure of one or more of the blocking blocks 320 may also be different from the structures of the remaining blocking blocks 320 .

[0103] In one embodiment, see Figure 5 and Figure 7 The blocking member 32 includes two blocking blocks 320, which are joined to form a circumferentially closed annular structure, such as a circular ring structure. The two blocking blocks 320 can have the same structure, in which case the blocking blocks 320 are semi-annular structures. Of course, the two blocking blocks 320 can also have different structures, in which case the blocking blocks 320 can be arc-shaped. The ends of the two blocking blocks 320 are pluggable and mated.

[0104] With such an arrangement, a circumferentially closed annular structure can be spliced together by two blocking blocks 320, that is, a complete annular structure can be spliced together by a minimum number of blocking blocks 320, so that the splicing seams of the spliced blocking member 32 can be minimized, thereby improving the structural stability of the blocking member 32, and the splicing seams that can contact impurities inside the cavity 10 are also minimized, which can effectively reduce the possibility of impurities inside the cavity 10 being stuck at the splicing seams, which is beneficial to improving the effect of sealing the through hole 101 and blocking impurities inside the cavity 10 from entering the through hole 101; and since only two blocking blocks 320 are used, it is a splicing method with the least number of components, which is conducive to quick assembly with the structural capacitor 31.

[0105] There are many specific implementations of plugging and fitting the ends of the two blocking members 32 to form a circumferentially closed annular structure, which will be described below as examples, but are not limited to the following plug-in methods.

[0106] In one embodiment, see Figures 7 to 10The end surface of one end of the blocking block 320 is provided with a protruding portion 3203a, and the end surface of the other end of the blocking block 320 is provided with a recessed portion 3203b. The protruding portion 3203a on one blocking block 320 is plugged into the recessed portion 3203b on the other blocking block 320. It is understood that the protruding portion 3203a is a protruding structure provided on the end surface of one end of the blocking block 320, such as a boss, a protrusion, a bump, a ridge, etc., while the recessed portion 3203b is a recessed structure provided on the end surface of the other end of the blocking block 320, such as a slot, a hole, etc. The protruding portion 3203a and the recessed portion 3203b can have an interference fit to enhance the reliability of the plug-in connection. Of course, in other embodiments, the protruding portion 3203a and the recessed portion 3203b can also have a transition fit.

[0107] With such an arrangement, the ends of the two blocking blocks 320 can be plugged into and matched with each other respectively to fix the two blocking blocks 320, and through the plug-in cooperation of the protrusion 3203a and the recessed portion 3203b, a positioning and guiding effect can be achieved so that the two blocking blocks 320 can be assembled accurately and quickly; and the protrusion 3203a and the recessed portion 3203b are both arranged on the end faces of the blocking blocks 320, which is conducive to the end faces of the two blocking blocks 320 fitting together, so as to reduce the gap between the two blocking blocks 320, and further facilitate the formation of a circumferentially closed annular structure, thereby improving the blocking effect on impurities inside the cavity 10.

[0108] The number of the protrusions 3203a and the recesses 3203b can be set as needed.

[0109] Optionally, see Figure 7 The end surface of one end of the blocking block 320 may be provided with only one protrusion 3203a, and the end surface of the other end of the blocking block 320 may be provided with only one recess 3203b. In this way, the two blocking blocks 320 can be positioned and fixed with a simple structure.

[0110] Optionally, see Figure 8 The end surface of one end of the blocking block 320 may be provided with two or more protrusions 3203a, and the end surface of the other end of the blocking block 320 may also be provided with two or more recesses 3203b. With this arrangement, the same end of the two blocking blocks 320 can be plugged into each other through the multiple protrusions 3203a and the multiple recesses 3203b. This not only improves the stability of the plug-in connection between the two blocking blocks 320, but also the plug-in cooperation between the multiple protrusions 3203a and the multiple recesses 3203b can improve the positioning effect of the two blocking blocks 320.

[0111] Optionally, in addition to the protrusion 3203a, a recessed portion 3203b may be provided on the end surface of one end of the blocking block 320; correspondingly, in addition to the recessed portion 3203b, a protrusion 3203a may be provided on the end surface of the other end of the blocking block 320. With this arrangement, the same end of the two blocking blocks 320 can be plugged into each other through multiple protrusions 3203a and multiple recessed portions 3203b, which not only improves the stability of the plug-in connection between the two blocking blocks 320, but also improves the positioning effect of the two blocking blocks 320 by plugging and matching multiple pairs of protrusions 3203a and recessed portions 3203b.

[0112] It should be noted that when the structures of the two blocking blocks 320 are different, protrusions 3203a can be set on the end faces of both ends of one of the blocking blocks 320, and recessed portions 3203b can be set on the end faces of both ends of the other blocking block 320, and the protrusions 3203a on one blocking block 320 are plugged into and matched with the recessed portions 3203b on the other blocking block 320.

[0113] In one embodiment, see Figure 9 and Figure 10 The protrusion 3203a is connected to the inner sidewall 32002 and the outer sidewall 32001 of the blocking block 320 at opposite ends along the radial direction of the blocking member 32. The protrusion 3203a is provided along the direction from the inner sidewall 32002 to the outer sidewall 32001 of the blocking block 320. The recessed portion 3203b is provided at opposite ends along the radial direction of the blocking member 32 and penetrates the inner sidewall 32002 and the outer sidewall 32001 of the blocking block 320.

[0114] With such arrangement, since the opposite ends of the recessed portion 3203b respectively penetrate the inner wall 32002 and the outer wall 32001 of the blocking block 320, when the ends of the two blocking blocks 320 are plugged in and matched, even if the protruding portion 3203a and the recessed portion 3203b are staggered by a certain position in their own length direction, they can still be quickly engaged with each other. It is also convenient to observe from the opening where the recessed portion 3203b penetrates the outer wall 32001 of the blocking block 320, which can reduce the difficulty of alignment between the protruding portion 3203a and the recessed portion 3203b, thereby reducing the difficulty of assembling the two blocking blocks 320 and facilitating the guiding and positioning cooperation between the protruding portion 3203a and the recessed portion 3203b.

[0115] Optionally, see Figure 10 The protrusion 3203a is a tapered structure in which the width gradually decreases from one end close to the end face of the blocking block 320 to the end face away from the blocking block 320, and the recessed portion 3203b is a gradually expanding structure in which the width gradually increases from the inner bottom of the recessed portion 3203b to the end face of the blocking block 320.

[0116] Such an arrangement can form a plug-in fit between the protruding portion 3203a of the gradually contracting structure and the recessed portion 3203b of the gradually expanding structure, which is beneficial to the positioning and guiding fit of the two, so that the two can be plugged in more quickly.

[0117] Of course, in some other embodiments, the width of the protrusion 3203a may be the same at all locations, rather than a gradually contracting structure; the width of the recessed portion 3203b may also be the same at all locations, rather than a gradually expanding structure.

[0118] Optionally, see Figure 10 The protruding portion 3203a is provided with a snap-fit structure 32031, and the recessed portion 3203b is provided with a snap-fit structure 32032, with the snap-fit structure 32031 being engaged with the snap-fit structure 32032. Alternatively, the snap-fit structure 32031 may be a protruding structure protruding from the protruding portion 3203a, such as a ridge or rib, and the snap-fit structure 32032 may be a groove structure recessed on the inner wall of the recessed portion 3203b. Alternatively, the snap-fit structure 32031 may be a groove structure recessed on the protruding portion 3203a, and the snap-fit structure 32032 may be a protruding structure protruding from the inner wall of the recessed portion 3203b.

[0119] With this arrangement, when the ends of the two blocking blocks 320 are plugged together, the protrusion 3203a is inserted into the recess 3203b, and the engaging structure 32031 is engaged with the engaging structure 32032, thereby improving the stability of the connection between the two blocking blocks 320.

[0120] Optionally, see Figure 10 A locking structure 32031 may be respectively provided on the two opposite side walls of the protruding portion 3203a, and correspondingly, a locking matching structure 32032 may be respectively provided on the two opposite inner walls of the recessed portion 3203b.

[0121] Such a configuration can improve the structural stability of the plug-fitting between the protruding portion 3203a and the recessed portion 3203b.

[0122] Optionally, see Figure 10 The engaging structure 32031 is arranged along the length direction of the protruding portion 3203a, and the engaging structure 32032 is arranged along the length direction of the recessed portion 3203b. It can be understood that both the engaging structure 32031 and the engaging structure 32032 are arranged along the inner sidewall 32002 of the blocking block 320 in the direction toward the outer sidewall 32001. When the blocking member 32 is annular, it can also be understood that both the engaging structure 32031 and the engaging structure 32032 are arranged along the radial direction of the blocking member 32.

[0123] Such a setting is conducive to the formation of a long strip of protrusion structure and groove structure by the snap-fit structure 32031 and the snap-fit matching structure 32032, so that the two can be in a direction perpendicular to the inner wall 32002 of the blocking block 320 toward the outer wall 32001, that is, in the direction of the connecting line of the ends of the two blocking blocks 320, and are not easily separated when subjected to force, thereby making the connection between the two blocking blocks 320 more secure and avoiding loosening.

[0124] Of course, in some other embodiments, the snap-fit structure 32031 and the snap-fitting structure 32032 are not limited to being arranged along the direction of the inner wall 32002 of the blocking block 320 toward the outer wall 32001 , but may also be arranged inclined to this direction.

[0125] In another embodiment, see Figure 11 A first plug-in portion 3204a and a first plug-in fitting portion 3204b are provided on the end surface of one end of the blocking block 320, and a second plug-in portion 3205a and a second plug-in fitting portion 3205b are provided on the end surface of the other end of the blocking block 320. The first plug-in portion 3204a and the second plug-in fitting portion 3205a are located on the same side of the blocking block 320, and the first plug-in fitting portion 3204b and the second plug-in fitting portion 3205b are located on the other side of the blocking block 320. The first plug-in portion 3204a on one blocking block 320 is plugged into the first plug-in fitting portion 3204b on the other blocking block 320, and the second plug-in portion 3205a on one blocking block 320 is plugged into the second plug-in fitting portion 3205b on the other blocking block 320. It can be understood that one of the first plug-in portion 3204a and the first plug-fitting portion 3204b can be a protruding structure, and the other can be a recessed structure; one of the second plug-in portion 3205a and the second plug-fitting portion 3205b can be a protruding structure, and the other can be a recessed structure.

[0126] With this arrangement, the structures of the first plug-in portion 3204a and the second plug-in portion 3205a can be identical or different, and the structures of the first plug-in mating portion 3204b and the second plug-in mating portion 3205b can be identical or different, both allowing for the plug-in mating of two identical blocking blocks 320. Furthermore, the combination of multiple plug-in mating connections can enhance the stability of the connection between blocking blocks 320. Furthermore, because the first plug-in portion 3204a and the second plug-in mating portion 3205a are located on the same side of the blocking block 320, and the first plug-in mating portion 3204b and the second plug-in mating portion 3205b are located on the opposite side of the blocking block 320, the structure is more standardized, facilitating the manufacture of blocking blocks 320.

[0127] Of course, in some other embodiments, the first plug-in portion 3204a and the second plug-in portion 3205a may not be located on the same side of the blocking block 320; for example, the first plug-in portion 3204a and the second plug-in mating portion 3205b may be located on the same side of the blocking block 320, while the second plug-in portion 3205a and the first plug-in mating portion 3204b are located on the other side of the blocking block 320. This arrangement facilitates the cross-disposition of the first plug-in portion 3204a and the second plug-in portion 3205a at both ends of the blocking block 320, thereby appropriately improving the reliability of the plug-in mating between the two blocking blocks 320.

[0128] In another embodiment, see Figure 12 and Figure 13 The end surface of one end of the blocking block 320 is provided with a step structure, and the end surface of the other end of the blocking block 320 is also provided with a step structure. Of course, it is also possible that only one end surface of the blocking block 320 is provided with a step structure, while the end surface of the other end is not provided with a step structure. Optionally, the gradient direction of the step structure (i.e., the arrangement direction of the step surfaces of the step structure) can be set along the direction from one end wall to the other end wall of the blocking block 320, or along the direction from the inner side wall 32002 to the outer side wall 32001 of the blocking block 320.

[0129] With such a configuration, since a step structure is provided on the end face of the blocking block 320, it is convenient for the ends of the two blocking blocks 320 to be plugged in and matched, and positioning and guiding can be achieved through the cooperation of the step structure, thereby improving the convenience of assembling the two blocking blocks 320; and the setting of the step structure can make the end faces of the two blocking blocks 320 fit more tightly, and can prevent fine dust and other impurities from passing through the gap formed between the two blocking blocks 320, thereby improving the blocking effect of impurities passing through the blocking blocks 320.

[0130] Alternatively, in one embodiment, see Figure 13 A first step structure 3206 is provided on the end surface of one end of the blocking block 320, and a second step structure 3207 is provided on the end surface of the other end of the blocking block 320. The first step structure 3206 on one blocking block 320 matches the first step structure 3206 on the other blocking block 320, and the second step structure 3207 on one blocking block 320 matches the second step structure 3207 on the other blocking block 320. In this case, the gradient direction of the step structure can be set along the direction from one end wall to the other end wall of the blocking block 320.

[0131] With this arrangement, since the second step structure 3207 on one blocking block 320 matches the second step structure 3207 on the other blocking block 320, the direction identification when the two blocking blocks 320 are matched can be reduced, and the convenience of assembling the two blocking blocks 320 can be improved.

[0132] Of course, in some other embodiments, the first step structure 3206 on one blocking block 320 may coincide with the second step structure 3207 on the other blocking block 320. In this case, the gradient direction of the step structure may be set along the direction from the inner sidewall 32002 to the outer sidewall 32001 of the blocking block 320.

[0133] Optionally, see Figure 13 The first step structure 3206 includes a first step surface 32061, a second step surface 32062 lower than the first step surface 32061, and a first inclined surface 32063 connected to the first step surface 32061 and the second step surface 32062, wherein the first step surface 32061, the first inclined surface 32063 and the second step surface 32062 on one blocking block 320 respectively coincide with the second step surface 32062, the first inclined surface 32063 and the first step surface 32061 on the other blocking block 320.

[0134] In this arrangement, only a first step surface 32061 and a second step surface 32062 of different heights protruding from the end of the blocking block 320 are provided, which is conducive to forming a step structure with fewer step surfaces, thereby improving the tightness of the end face matching of the two blocking blocks 320 while simplifying the structure; and, the two first inclined surfaces 32063 cooperate with each other to guide and position the connection between the two blocking blocks 320, which can further improve the accuracy of the connection between the two blocking blocks 320.

[0135] It should be noted that the structure of the first step structure 3206 is not limited to this. In some other embodiments, the number of step surfaces of the first step structure 3206 can also be three, four, or more than four, which can be set according to actual needs.

[0136] Optionally, see Figure 13 The second step structure 3207 includes a third step surface 32071, a fourth step surface 32072 lower than the third step surface 32071, and a second inclined surface 32073 connected to the third step surface 32071 and the fourth step surface 32072. The third step surface 32071, the second inclined surface 32073 and the fourth step surface 32072 on one blocking block 320 respectively coincide with the fourth step surface 32072, the second inclined surface 32073 and the third step surface 32071 on the other blocking block 320.

[0137] In this arrangement, only a third step surface 32071 and a fourth step surface 32072 of different heights protruding from the end of the blocking block 320 are provided, which is conducive to forming a step structure with fewer step surfaces, thereby improving the tightness of the end face matching of the two blocking blocks 320 while simplifying the structure; and, the two second inclined surfaces 32073 cooperate with each other to guide and position the connection between the two blocking blocks 320, which can further improve the accuracy of the connection between the two blocking blocks 320.

[0138] It should be noted that the structure of the second step structure 3207 is not limited to this. In some other embodiments, the number of step surfaces of the second step structure 3207 can also be three, four, or more than four, which can be specifically set according to actual needs.

[0139] Alternatively, in one embodiment, see Figure 13 One of the first stepped surface 32061 and the second stepped surface 32062 is provided with an inserting portion 3208a, and the other of the first stepped surface 32061 and the second stepped surface 32062 is provided with a plug-fitting portion 3208b. The inserting portion 3208a on one blocking block 320 is plugged into the plug-fitting portion 3208b on the other blocking block 320. It is understood that one of the inserting portion 3208a and the plug-fitting portion 3208b can be a protruding structure, and the other can be a recessed structure.

[0140] In this way, by providing the plug-in portion 3208a and the plug-fitting portion 3208b on the step surface of the step structure, the stability of the plug-fitting between the two blocking blocks 320 can be improved.

[0141] It should be noted that the number of the plug-in portions 3208a and the plug-in mating portions 3208b on the first step structure 3206 can be one or more, and can be set according to actual needs. The arrangement or layout of the plug-in portions 3208a and the plug-in mating portions 3208b can also be set according to actual needs.

[0142] Alternatively, in one embodiment, see Figure 13 One of the third step surface 32071 and the fourth step surface 32072 is provided with an inserting portion 3208a, and the other of the third step surface 32071 and the fourth step surface 32072 is provided with a plug-fitting portion 3208b. The inserting portion 3208a on one blocking block 320 is plugged into the plug-fitting portion 3208b on the other blocking block 320. It is understood that one of the inserting portion 3208a and the plug-fitting portion 3208b can be a protruding structure, and the other can be a recessed structure.

[0143] In this way, by providing the plug-in portion 3208a and the plug-fitting portion 3208b on the step surface of the step structure, the stability of the plug-fitting between the two blocking blocks 320 can be improved.

[0144] It should be noted that the number of the plug-in portions 3208a and the plug-in mating portions 3208b on the second step structure 3207 can be one or more, and can be set according to actual needs. The arrangement or layout of the plug-in portions 3208a and the plug-in mating portions 3208b can also be set according to actual needs.

[0145] In another embodiment, see Figure 14 The blocking member 32 includes a connecting portion 323, with opposite ends of the connecting portion 323 respectively connected to one end of the two blocking blocks 320, so that the two blocking blocks 320 can rotate relative to the connecting portion 323 to open and close. Optionally, the connecting portion 323 can be integrally formed with the two blocking blocks 320 as a one-piece structure, in which case the connecting portion 323 is a bendable thin sheet structure. Of course, in other embodiments, the connecting portion 323 can also be separately formed and connected to the two blocking blocks 320, such as a rotating shaft, but is not limited thereto.

[0146] With such arrangement, the two blocking blocks 320 can be connected to each other. When assembled with the structural capacitor 31, one of the blocking blocks 320 can be first buckled on one side of the structural capacitor 31, and then the other blocking block 320 can be rotated a certain angle relative to the connecting portion 323 and then buckled on the structural capacitor 31. In this way, the two blocking blocks 320 can be buckled, which can improve the convenience of assembly with the structural capacitor 31.

[0147] It should be understood that the plug-in fit between the ends of the two blocking blocks 320 can adopt the plug-in fit method of any of the above embodiments, which will not be repeated here. The ends of the two blocking blocks 320 can also be fixed together without plug-in fit, for example, by fasteners.

[0148] It can be understood that the above description is mainly to illustrate the innovation of the filter 100 provided in the embodiment of the present application. In addition to the above-mentioned elements, the filter 100 provided in the embodiment of the present application may also have other elements. The other elements may be elements of any existing filter. This is well known to ordinary technicians in this field and will not be repeated here.

[0149] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A filter, characterized in that: The filter comprises: A cavity, wherein the cavity is provided with a through hole communicating with the interior of the cavity; a signal transmission member, the signal transmission member being disposed at the through hole; and a structural capacitor assembly, the structural capacitor assembly comprising a structural capacitor and a blocking member, the structural capacitor being disposed in the through hole and connected to the signal transmission member; the blocking member sealing the through hole to prevent impurities inside the cavity from entering the through hole; The structural capacitor includes: a first conductor, wherein a first limiting portion is provided on the first conductor; a second conductor, wherein a second limiting portion is provided on the second conductor, and the second limiting portion is spaced apart from the first limiting portion; and an insulating member, the insulating member being separated between the second conductive member and the first conductive member; Wherein, the first conductor or the second conductor is connected to the signal transmission component; The blocking member is provided with a first position-limiting fitting portion and a second position-limiting fitting portion. The blocking member is sleeved on the first conductive member and the second conductive member, and the first position-limiting fitting portion is position-limitingly fitted with the first position-limiting fitting portion, and the second position-limiting fitting portion is position-limitingly fitted with the second position-limiting fitting portion, so as to fix the first conductive member and the second conductive member; The blocking member is a circumferentially closed annular structure. The shape of the outer peripheral wall of the blocking member is adapted to the shape of the inner peripheral wall of the through hole, and the outer peripheral wall of the blocking member is in contact with the inner peripheral wall of the through hole.

2. The filter according to claim 1, wherein: The signal transmission member is provided at an opening of the through hole away from the interior of the cavity, and the blocking member is used to block impurities in the cavity from entering the side of the through hole away from the interior of the cavity; and / or There are two blocking members, and the two blocking members are respectively blocked at two opposite ends of the through hole.

3. The filter according to claim 1, wherein: The blocking member is located in the through hole and is sleeved on the structural capacitor; the shape of the outer peripheral wall of the blocking member is adapted to the shape of the inner peripheral wall of the through hole, and the outer peripheral wall of the blocking member is in contact with the inner peripheral wall of the through hole.

4. The filter according to claim 3, wherein: The signal transmission member is provided at an opening of the through hole away from the interior of the cavity, and the blocking member is used to block impurities in the cavity from entering the side of the through hole away from the interior of the cavity; The blocking member is provided at an opening of the through hole close to the interior of the cavity; and / or The structural capacitor assembly includes a support member connected to the structural capacitor and supported on the inner peripheral wall of the through hole, and the support member is located between the signal transmission member and the blocking member.

5. The filter according to claim 1, wherein: The blocking member includes at least two blocking blocks, each of which is connected end to end in sequence to form a circumferentially closed annular structure; The outer side walls of the blocking blocks are connected end to end in sequence to form a circumferentially closed annular outer wall; The blocking block has a first sub-limiting fitting portion and a second sub-limiting fitting portion. The first sub-limiting fitting portions of each blocking block cooperate to form the first limiting fitting portion, and the second sub-limiting fitting portions of each blocking block cooperate to form the second limiting fitting portion.

6. The filter according to claim 5, characterized in that: The ends of the blocking blocks are plug-fitted to each other.

7. The filter according to claim 6, characterized in that: A protruding portion is convexly provided on the end surface of one end of the blocking block, and a recessed portion is concavely provided on the end surface of the other end of the blocking block, wherein the protruding portion on one blocking block is plugged into the recessed portion on the other blocking block.

8. The filter according to claim 7, wherein: The opposite ends of the protrusion along the radial direction of the blocking member are respectively connected to the inner side wall and the outer side wall of the blocking block, and the opposite ends of the recessed portion along the radial direction of the blocking member respectively penetrate the inner side wall and the outer side wall of the blocking block; The protrusion is a tapered structure with a width gradually decreasing from an end close to the end surface of the blocking block to an end away from the end surface of the blocking block, and the recess is a gradually expanding structure with a width gradually increasing from the inner bottom of the recess to the end surface of the blocking block; The protruding portion is provided with a snap-fit structure, the recessed portion is provided with a snap-fit structure, and the snap-fit structure is snap-fitted with the snap-fit structure; The snap-fit structure is arranged along the length direction of the protruding portion, and the snap-fitting structure is arranged along the length direction of the recessed portion.

9. The filter according to claim 6, wherein: A first plug-in portion and a first plug-in fitting portion are provided on the end face of one end of the blocking block, and a second plug-in portion and a second plug-in fitting portion are provided on the end face of the other end of the blocking block. The first plug-in portion and the second plug-in fitting portion are located on the same side of the blocking block, and the first plug-in fitting portion and the second plug-in fitting portion are located on the other side of the blocking block; the first plug-in portion on one blocking block is plugged into the first plug-in fitting portion on the other blocking block, and the second plug-in portion on one blocking block is plugged into the second plug-in fitting portion on the other blocking block.

10. The filter according to claim 6, characterized in that: A step structure is provided on an end surface of one end of the blocking block and / or an end surface of the other end of the blocking block.

11. The filter according to claim 10, characterized in that: A first step structure is provided on the end surface of one end of the blocking block, and a second step structure is provided on the end surface of the other end of the blocking block; The first step structure on one of the blocking blocks matches the first step structure on the other blocking block, and the second step structure on one of the blocking blocks matches the second step structure on the other blocking block; or The first step structure on one of the blocking blocks matches the second step structure on the other blocking block.

12. The filter according to claim 11, characterized in that: The first step structure includes a first step surface, a second step surface lower than the first step surface, and a first inclined surface connected to the first step surface and the second step surface, wherein the first step surface, the first inclined surface, and the second step surface on one of the blocking blocks respectively coincide with the second step surface, the first inclined surface, and the first step surface on the other blocking block; and / or The second step structure includes a third step surface, a fourth step surface lower than the third step surface, and a second inclined surface connected to the third step surface and the fourth step surface, wherein the third step surface, the second inclined surface and the fourth step surface on one blocking block respectively coincide with the fourth step surface, the second inclined surface and the third step surface on another blocking block.

13. The filter according to claim 12, wherein: One of the first step surface and the second step surface is provided with an inserting portion, and the other of the first step surface and the second step surface is provided with an inserting and fitting portion; wherein the inserting portion on one of the blocking blocks is inserted into the inserting and fitting portion on the other blocking block; and / or One of the third step surface and the fourth step surface is provided with a plug-in portion, and the other of the third step surface and the fourth step surface is provided with a plug-in fitting portion; the plug-in portion on one of the blocking blocks is plugged into the plug-in fitting portion on the other blocking block.

14. The filter according to claim 6, wherein: The blocking member includes a connecting portion, and opposite ends of the connecting portion are respectively connected to one end of the two blocking blocks, so that the two blocking blocks can rotate relative to the connecting portion to open and close.

15. The filter according to any one of claims 5 to 14, characterized in that: The structures of the blocking blocks are the same; and / or The blocking member comprises two blocking blocks, which are spliced into a circumferentially closed annular structure; and the ends of the two blocking blocks are plugged into each other.

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