A VHF radio cavity filter device

Abstract

The utility model discloses a VHF radio cavity filter device, which includes a shell, a resonant cavity and a resonant electrode column are arranged on the inner side of the shell, a heat dissipation component is arranged on the bottom side of the inner side of the resonant cavity, an isolation plate is arranged on the inner side of the resonant cavity, a disassembly component is arranged on the rear side and the front side of the shell, and connectors are arranged on the left and right ends of the shell. The utility model is achieved by respectively engaging the clamping plates on both sides of the top cover with the limit racks on the shell, and then rotating the regulating valve to drive the threaded rod to rotate, and then driving the two groups of limit racks to move downward under the action of the threaded sleeve, thereby driving the clamping plate and the top cover to move and engage with the sealing groove on the top side of the shell, and then continuing to rotate the regulating valve until the threaded sleeve cannot move at all. At this time, the top cover and the shell are in a completely fixed state. When disassembly is required, the regulating valve can be rotated in the opposite direction. The overall installation is simple and fast, and the difficulty of disassembly is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cavity filters, in particular to a cavity filter device for a VHF very high frequency radio station. Background Art

[0002] Cavity filters are generally composed of a resonant cavity and a resonant electrode column. They have good frequency selection and filtering effects in circuits and electronic high-frequency systems, and can suppress useless signals and noise outside the frequency band. They are widely used in aviation, aerospace, radar, communications, electronic countermeasures, radio and television, and various electronic test equipment.

[0003] The cover plate on the top of the cavity filter cavity is mostly tightened directly by bolts to achieve sealing. Although the bolts can ensure that the cover plate is fixed on the top of the cavity, gaps are prone to appear, resulting in reduced sealing effect, and long-term use can easily cause the bolts to oxidize and damage. Not only does it take multiple bolts to be tightened during installation, which makes the installation time-consuming and laborious, but the sealing cannot be guaranteed after the bolts are oxidized and damaged, and disassembly is more troublesome, which is not conducive to quick disassembly and assembly. In addition, the overall heat dissipation effect is poor during use, which can easily lead to the heat inside the cavity cannot be quickly dissipated, causing damage to internal electronic components and reduced service life. Long-term use can easily cause moisture in the air to enter the inside of the cavity and damage the device. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In order to solve the problem that the cover plate can be fixed on the top of the cavity by bolts, but gaps are prone to appear, resulting in reduced sealing effect, and long-term use is prone to oxidation and damage of the bolts. Not only does it take time and effort to install multiple bolts, but also the sealing cannot be guaranteed after the bolts are oxidized and damaged, and disassembly is more troublesome, which is not conducive to rapid disassembly and assembly. In addition, the overall heat dissipation effect is poor during use, which easily leads to the failure of the heat inside the cavity to dissipate quickly, resulting in damage to internal electronic components and reduced service life. In addition, long-term use is prone to moisture in the air entering the inside of the cavity and damaging the device. The utility model provides the following technical solutions:

[0006] A VHF radio cavity filter device comprises a shell, a resonant cavity and a resonant electrode column are arranged on the inner side of the shell, a heat dissipation component is arranged on the bottom side of the inner side of the resonant cavity, an isolation plate is arranged on the inner side of the resonant cavity, a disassembly component is arranged on the rear side and the front side of the shell, connectors are arranged on the left and right ends of the shell, a top cover is arranged on the top side of the shell, and a drying component is arranged on the bottom side of the top cover.

[0007] The beneficial effect of the utility model is as follows: the clamping plates on both sides of the top cover are respectively engaged with the limit frames on the outer shell, and then the regulating valve is rotated to drive the threaded rod to rotate, and then the two groups of limit frames are respectively driven downward under the action of the threaded sleeve, thereby driving the clamping plate and the top cover to move and engage with the sealing groove on the top side of the outer shell for installation, and then the regulating valve is continued to be rotated until the threaded sleeve cannot move at all. At this time, the top cover and the outer shell are in a completely fixed state. When disassembly is required, the regulating valve can be rotated in the opposite direction. The overall installation is simple and quick, and the difficulty of disassembly and assembly is reduced.

[0008] The beneficial effect of the utility model is that the rubber sealing ring and the sealing groove are clamped and squeezed, which is beneficial to improving the overall sealing of the outer shell and the top cover after installation. Then, during use, when the device is powered on and heat is generated, heat is absorbed and conducted under the action of the heat conducting plate and the heat conducting seat, so that when wind enters the heat conducting seat from the air inlet, the heat is taken out from the air outlet, which is beneficial to the rapid heat dissipation of the inner side of the filter, and avoids internal heat accumulation that causes damage to internal components or reduces the service life.

[0009] The beneficial effect of the utility model is that when air infiltrates into the inner side of the shell during long-term use, the air enters the inner side of the drying box through the drying holes. At this time, since the inner side of the drying box is filled with bagged desiccant, it is beneficial to adsorb and dry the moisture in the air, which is beneficial to avoid the phenomenon that moisture is deposited inside the device to affect the use or cause damage to parts.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] As a preferred solution of the VHF radio cavity filter device of the utility model, the four corners of the bottom side of the shell are respectively fixedly installed with mounting seats, the top side of the mounting seats is provided with mounting holes, the top side of the shell is provided with a sealing groove, and the sealing groove is a square structure.

[0012] The beneficial effect of adopting the above further solution is that the rubber sealing ring and the sealing groove are engaged and squeezed, which is conducive to improving the overall sealing of the housing and the top cover after installation, and the device can be conveniently fixed in a specified position with screws through the installation hole.

[0013] As a preferred solution of the VHF radio cavity filter device of the utility model, the heat dissipation component includes a heat conducting plate, a heat conducting seat, an air inlet and an air outlet, two heat conducting plates are fixedly installed on the top side of the heat conducting seat, the heat conducting plates are respectively embedded in the bottom side of the shell, the front and rear ends of the heat conducting seat are respectively provided with an air inlet and an air outlet, and a through groove is provided between the air inlet and the air outlet.

[0014] The beneficial effect of adopting the above further scheme is that heat absorption and heat conduction are carried out under the action of the heat conducting plate and the heat conducting seat, so that when wind enters the heat conducting seat from the air inlet, the heat is taken out from the air outlet, which is beneficial to the rapid heat dissipation inside the filter and avoids internal heat accumulation that causes damage to internal components or reduces service life.

[0015] As a preferred solution of the VHF radio cavity filter device of the utility model, a fitting groove is provided on the top side of the isolation plate, and drying holes are provided on the front side and the back side of the isolation plate respectively, and the drying holes are grouped in three, with two groups in total.

[0016] The beneficial effect of adopting the above further scheme is that the drying holes facilitate air circulation for drying, and at the same time, the fitting grooves facilitate engagement with the drying box during installation, thereby improving the fit and sealing of the overall installation.

[0017] As a preferred solution of the VHF radio cavity filter device described in the utility model, the disassembly and assembly components include a support plate, a limit frame, a protective cylinder, a threaded rod and a threaded sleeve, two limit frames are movably installed on the top side of the support plate, a protective cylinder is fixedly installed on the bottom side of the support plate, a threaded rod is movably installed on the inner side of the protective cylinder, and a regulating valve is provided at the bottom end of the threaded rod, a threaded sleeve is threadedly connected to the outer side of the threaded rod, and the limit frames are fixedly installed on the outer side of the threaded sleeve.

[0018] The beneficial effect of adopting the above further scheme is that by rotating the regulating valve, the threaded rod is driven to rotate, and then the two sets of limit frames are driven downward respectively under the action of the threaded sleeve, thereby driving the clamping plate and the top cover to move and engage with the sealing groove on the top side of the outer shell to be installed, and then the regulating valve is continued to be rotated until the threaded sleeve cannot move at all. At this time, the top cover and the outer shell are in a completely fixed state. When disassembly is required, the regulating valve can be rotated in the opposite direction. The overall installation is simple and quick, and the difficulty of disassembly and assembly is reduced.

[0019] As a preferred solution of the VHF radio cavity filter device of the utility model, wherein: the front side and the rear side of the top cover are respectively fixedly installed with card plates, the card plates are of Z-shaped structure, the card plates are respectively grouped in two, and there are two groups in total, and a rubber sealing ring is provided on the bottom side of the top cover, and the size and shape of the rubber sealing ring match the sealing groove.

[0020] The beneficial effect of adopting the above further scheme is that the Z-shaped clamping plate can be conveniently connected to the disassembly assembly for fixed installation, and during the installation process, the rubber sealing ring is engaged with the sealing groove, which is conducive to sealing the connection position.

[0021] As a preferred solution of the VHF radio cavity filter device of the utility model, the drying component includes a drying box, a through hole, a limit plate and a cover plate, a plurality of through holes are respectively opened on the front side and the rear side of the drying box, and the limit plates are fixedly installed on the left and right sides of the drying box respectively. The size and shape of the drying box are matched with the fitting groove, a cover plate is movably installed on the bottom side of the drying box, and the inner side of the drying box is filled with bagged desiccant.

[0022] The beneficial effect of adopting the above further scheme is that when air penetrates into the inner side of the outer shell during long-term use, the air enters the inner side of the drying box through the drying holes. At this time, since the inner side of the drying box is filled with bagged desiccant, it is beneficial to adsorb and dry the moisture in the air, which helps to avoid the phenomenon of moisture deposition inside the device affecting the use or causing damage to parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of this embodiment.

[0025] Figure 2 Schematic diagram of the top cross-sectional structure of the housing of this embodiment.

[0026] Figure 3 It is a front view cross-sectional structural schematic diagram of the disassembly and assembly components of this embodiment.

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the heat dissipation assembly in this embodiment when viewed from above.

[0028] Figure 5It is a schematic diagram of the three-dimensional structure of the top cover of this embodiment.

[0029] In the figure; shell 1, resonance cavity 2, resonance electrode column 3, heat dissipation component 4, isolation plate 5, disassembly and assembly component 6, connector 7, top cover 8, drying component 9, mounting seat 101, mounting hole 102, sealing groove 103, heat conducting plate 401, heat conducting seat 402, air inlet 403, air outlet 404, fitting groove 501, drying hole 502, support plate 601, limit frame 602, protective tube 603, threaded rod 604, threaded sleeve 605, clamping plate 801, rubber sealing ring 802, drying box 901, through hole 902, limit plate 903, cover plate 904. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Example

[0033] Reference Figures 1 to 5 , is an embodiment of the utility model, which provides a VHF radio cavity filter device, including a shell 1, a resonant cavity 2 and a resonant electrode column 3 are arranged on the inner side of the shell 1, a heat dissipation component 4 is arranged on the bottom side of the inner side of the resonant cavity 2, an isolation plate 5 is arranged on the inner side of the resonant cavity 2, a disassembly component 6 is arranged on the rear side and the front side of the shell 1, respectively, connectors 7 are arranged on the left and right ends of the shell 1, a top cover 8 is arranged on the top side of the shell 1, and a drying component 9 is arranged on the bottom side of the top cover 8.

[0034] Furthermore, mounting seats 101 are fixedly mounted at the four corners of the bottom side of the housing 1 , mounting holes 102 are provided on the top side of the mounting seats 101 , and sealing grooves 103 are provided on the top side of the housing 1 . The sealing grooves 103 are in a square structure.

[0035] like Figure 1 , Figure 2As shown, during use, the rubber sealing ring 802 and the sealing groove 103 are engaged and squeezed, which is beneficial to improving the overall sealing of the housing 1 and the top cover 8 after installation, and the installation hole 102 is convenient for fixing the device at a specified position with screws.

[0036] Furthermore, the heat dissipation assembly 4 includes a heat conducting plate 401, a heat conducting seat 402, an air inlet 403 and an air outlet 404. Two heat conducting plates 401 are fixedly installed on the top side of the heat conducting seat 402. The heat conducting plates 401 are respectively embedded in the bottom side of the outer shell 1. The front and rear ends of the heat conducting seat 402 are respectively provided with an air inlet 403 and an air outlet 404. A through groove is provided between the air inlet 403 and the air outlet 404.

[0037] like Figure 1 , Figure 4 As shown, during use, when the device is powered on and generates heat, heat is absorbed and conducted under the action of the heat conducting plate 401 and the heat conducting seat 402, so that when wind enters the heat conducting seat 402 from the air inlet 403, the heat is taken out from the air outlet 404, which is beneficial to the rapid heat dissipation inside the filter and avoids internal heat accumulation that may cause damage to internal components or reduce the service life.

[0038] Furthermore, a fitting groove 501 is provided on the top side of the isolation plate 5, and drying holes 502 are provided on the front side and the back side of the isolation plate 5, respectively. The drying holes 502 are arranged in groups of three, and two groups are provided in total.

[0039] like Figure 2 As shown, during use, the drying holes 502 facilitate air circulation and drying. At the same time, the fitting grooves 501 facilitate engagement with the drying box 901 during installation, thereby improving the fit and sealing of the overall installation.

[0040] Furthermore, the disassembly and assembly component 6 includes a support plate 601, a limit frame 602, a protective tube 603, a threaded rod 604 and a threaded sleeve 605. Two limit frames 602 are movably installed on the top side of the support plate 601, a protective tube 603 is fixedly installed on the bottom side of the support plate 601, a threaded rod 604 is movably installed on the inner side of the protective tube 603, and a regulating valve is provided at the bottom end of the threaded rod 604. The outer side of the threaded rod 604 is connected to the threaded sleeve 605 through a thread, and the limit frames 602 are fixedly installed on the outer sides of the threaded sleeve 605.

[0041] like Figure 1 , Figure 3As shown, during the installation process, the regulating valve is rotated, thereby driving the threaded rod 604 to rotate, and then the two sets of limit frames 602 are respectively driven downward under the action of the threaded sleeve 605, thereby driving the clamping plate 801 and the top cover 8 to move and engage with the sealing groove 103 on the top side of the outer shell 1 for installation, and then the regulating valve is continued to be rotated until the threaded sleeve 605 cannot move at all. At this time, the top cover 8 and the outer shell 1 are in a completely fixed state. When disassembly is required, the regulating valve can be rotated in the opposite direction. The overall installation is simple and quick, and the difficulty of disassembly and assembly is reduced.

[0042] Furthermore, the front and rear sides of the top cover 8 are respectively fixedly installed with card plates 801, the card plates 801 are of Z-shaped structure, and the card plates 801 are grouped in two, with a total of two groups. A rubber sealing ring 802 is provided on the bottom side of the top cover 8, and the size and shape of the rubber sealing ring 802 match the sealing groove 103.

[0043] like Figure 1 , Figure 5 As shown, during the installation of the top cover 8, the Z-shaped clamping plate 801 is used to facilitate connection with the disassembly assembly 6 for fixed installation, and during the installation process, the rubber sealing ring 802 is engaged with the sealing groove 103, which is beneficial to sealing the connection position.

[0044] Furthermore, the drying component 9 includes a drying box 901, a through hole 902, a limit plate 903 and a cover plate 904. A plurality of through holes 902 are respectively provided on the front and rear sides of the drying box 901. The limit plates 903 are respectively fixedly installed on the left and right sides of the drying box 901. The size and shape of the drying box 901 match the fitting groove 501. A cover plate 904 is movably installed on the bottom side of the drying box 901. The inner side of the drying box 901 is filled with bagged desiccant.

[0045] like Figure 2 , Figure 5 As shown, when air penetrates into the inner side of the shell 1 during long-term use, the air enters the inner side of the drying box 901 through the drying hole 502. At this time, since the inner side of the drying box 901 is filled with bagged desiccant, it is beneficial to adsorb and dry the moisture in the air, which helps to avoid the phenomenon of moisture deposition inside the device affecting the use or causing damage to parts.

[0046] Working principle: During the installation process, the clamping plates 801 on both sides of the top cover 8 are respectively engaged with the limit frames 602 on the outer shell 1, and then the regulating valve is rotated to drive the threaded rod 604 to rotate, and then the two sets of limit frames 602 are respectively driven downward under the action of the threaded sleeve 605, thereby driving the clamping plate 801 and the top cover 8 to move and engage with the sealing groove 103 on the top side of the outer shell 1 for installation, and then the regulating valve is continued to be rotated until the threaded sleeve 605 cannot move at all. At this time, the top cover 8 and the outer shell 1 are in a completely fixed state. When disassembly is required, the regulating valve can be rotated in the opposite direction. The overall installation is simple and quick, and the difficulty of disassembly and assembly is reduced. In addition, the rubber sealing ring 802 is engaged and squeezed with the sealing groove 103, which is conducive to improving the outer shell 1 and the top cover. After the cover 8 is installed, the overall sealing is good. Then, during use, when the device is powered on and generates heat, the heat is absorbed and conducted under the action of the heat conducting plate 401 and the heat conducting seat 402. Therefore, when wind enters the heat conducting seat 402 from the air inlet 403, the heat is taken out from the air outlet 404, which is beneficial to the rapid heat dissipation inside the filter, avoiding internal heat accumulation that causes damage to internal components or reduces the service life. When air penetrates into the inner side of the shell 1 for a long time, the air enters the inner side of the drying box 901 through the drying hole 502. At this time, since the inner side of the drying box 901 is filled with bagged desiccant, it is beneficial to adsorb and dry the moisture in the air, which is beneficial to avoid the phenomenon that moisture is deposited inside the device to affect the use or cause damage to parts.

[0047] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention).

[0049] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A VHF radio cavity filter device, characterized in that: The invention comprises a shell (1), wherein a resonant cavity (2) and a resonant electrode column (3) are arranged on the inner side of the shell (1), a heat dissipation component (4) is arranged on the bottom side of the inner side of the resonant cavity (2), an isolation plate (5) is arranged on the inner side of the resonant cavity (2), a disassembly component (6) is arranged on the rear side and the front side of the shell (1), connectors (7) are arranged on the left and right ends of the shell (1), a top cover (8) is arranged on the top side of the shell (1), and a drying component (9) is arranged on the bottom side of the top cover (8).

2. The VHF radio cavity filter device according to claim 1, characterized in that: The four corners of the bottom side of the housing (1) are respectively fixedly mounted with mounting seats (101), the top side of the mounting seats (101) is provided with mounting holes (102), the top side of the housing (1) is provided with a sealing groove (103), and the sealing groove (103) is in a square structure.

3. The VHF radio cavity filter device according to claim 1, characterized in that: The heat dissipation component (4) comprises a heat conducting plate (401), a heat conducting seat (402), an air inlet (403) and an air outlet (404); two heat conducting plates (401) are fixedly mounted on the top side of the heat conducting seat (402); the heat conducting plates (401) are respectively embedded in the bottom side of the housing (1); the front and rear ends of the heat conducting seat (402) are respectively provided with an air inlet (403) and an air outlet (404); a through groove is provided between the air inlet (403) and the air outlet (404).

4. The VHF radio cavity filter device according to claim 1, characterized in that: The top side of the isolation plate (5) is provided with a fitting groove (501), and the front side and the rear side of the isolation plate (5) are respectively provided with drying holes (502), and the drying holes (502) are respectively arranged in groups of three, with two groups being provided in total.

5. The VHF radio cavity filter device according to claim 1, characterized in that: The disassembly and assembly component (6) comprises a support plate (601), a limiting frame (602), a protective tube (603), a threaded rod (604) and a threaded sleeve (605); two limiting frames (602) are movably mounted on the top side of the support plate (601); a protective tube (603) is fixedly mounted on the bottom side of the support plate (601); a threaded rod (604) is movably mounted on the inner side of the protective tube (603); a regulating valve is arranged at the bottom end of the threaded rod (604); a threaded sleeve (605) is threadedly connected to the outer side of the threaded rod (604); and the limiting frames (602) are fixedly mounted on the outer side of the threaded sleeve (605).

6. The VHF radio cavity filter device as claimed in claim 2, characterized in that: A clamping plate (801) is fixedly mounted on the front side and the rear side of the top cover (8), respectively. The clamping plate (801) is a Z-shaped structure. Two of the clamping plates (801) form a group, and two groups are provided in total. A rubber sealing ring (802) is provided on the bottom side of the top cover (8), and the size and shape of the rubber sealing ring (802) match the sealing groove (103).

7. The VHF radio cavity filter device as claimed in claim 4, characterized in that: The drying assembly (9) comprises a drying box (901), through holes (902), a limit plate (903) and a cover plate (904); a plurality of through holes (902) are respectively provided on the front side and the rear side of the drying box (901); the limit plates (903) are respectively fixedly mounted on the left and right sides of the drying box (901); the size and shape of the drying box (901) are matched with the matching groove (501); a cover plate (904) is movably mounted on the bottom side of the drying box (901); and the inside of the drying box (901) is filled with bagged desiccant.

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