Efficient shielding multipurpose connection filter

Abstract

The invention discloses an efficient shielding multipurpose connection filter, and belongs to the technical field of production of connection filters, the efficient shielding multipurpose connection filter comprises an input end cable, a plug, a socket, a filter shell, a filter cover plate and three output end cables, a plurality of wires in the input end cable comprise a first group of wires, a second group of wires and a third group of wires, the plug comprises a metal plug shielding shell, a first plug plugging assembly, a second plug plugging assembly and a plurality of third plug contact elements, the first plug plugging assembly, the second plug plugging assembly and the plurality of third plug contact elements are arranged inside the metal plug shielding shell, and the socket comprises a metal socket shielding shell, a first socket plugging assembly, a second socket plugging assembly and a plurality of third socket contact elements, an inner cavity of the filter shell is divided into a first inner cavity and a second inner cavity by a shielding partition plate. According to the invention, the plug-in type electric connection function of three groups of wires with different purposes is realized, the whole-course mutual electromagnetic shielding function among the three groups of wires is also realized, and the special application requirements on small aircrafts such as fighters, helicopters, unmanned aerial vehicles and the like are met.

Description

Technical Field

[0001] The invention belongs to the technical field of production of connection filters, and specifically relates to a connection filter with high efficiency shielding, and in particular to a multi-purpose connection filter with high efficiency shielding. Background Art

[0002] Electrical connectors used to achieve electrical connection and are easy to install and disassemble quickly, and filters used to filter out interfering electrical signals are both commonly used electronic devices in electrical signal transmission or electrical equipment. Electrical connectors generally include plugs and sockets that are plugged into each other through contacts. The contacts are generally pins or sockets. The plugs and sockets are respectively connected to wires (the wires here refer to wires with an insulating protective layer on the outer layer, and the connection between the wires and other components is the electrical connection between the wire core, i.e., the bare metal wire, and other components, the same below) to achieve the functions of rapid electrical connection and rapid separation between the wires; the filter generally includes a housing and a filter element. The wire passes through the filter element to achieve the purpose of removing interfering signals. In order to achieve a better shielding effect, the housing is generally a metal housing.

[0003] Generally speaking, electrical connectors and filters are used independently in electrical signal transmission or electrical equipment. However, with the increasing application in fields such as aerospace, the requirements for miniaturization and lightweight of electrical equipment are getting higher and higher, and the integration of electrical connectors and filters is becoming more and more widely used. This component is generally called a connection filter, which has both plug-in electrical connection function and filtering function.

[0004] Traditional connection filters generally connect the socket of the electrical connector to the housing of the filter, the input end wire is connected to the plug of the electrical connector, the plug is connected to the socket in a plug-in manner, the socket is connected to the input end of the filter element in the housing of the filter, and the output end wire is connected to the output end of the filter element, thus realizing the functions of plug-in electrical connection and filtering.

[0005] For application scenarios where the number of wires is small, the wires have the same purpose, and there is no need for efficient electromagnetic shielding between the wires, the above-mentioned traditional connection filters are fine and can meet the application requirements. However, for application scenarios where the number of wires is large, the wires have different purposes, and efficient electromagnetic shielding is required between the wires, the above-mentioned traditional connection filters are difficult to meet the application requirements. For example, in small aircraft such as fighters, helicopters, and drones, various operating systems require centralized signal transmission of many wires, and multiple wires have different uses. For example, there are three groups of wires in total, and each group of wires has multiple wires. The first group of wires does not need to be filtered (for example, because the wire signal itself has no noise, it does not need to be filtered) to reduce filtering components and reduce product volume. The second group of wires needs to be filtered but the corresponding current is large, which is easy to generate a strong magnetic field. The third group of wires needs to be filtered but the corresponding voltage is large, which is easy to generate a strong electric field. In this case, not only does it require plug-in electrical connection of the three groups of wires, but it is not necessary to filter the first group of wires, but it is necessary to filter the two outer groups of wires, and efficient electromagnetic shielding is required between the three groups of wires to avoid mutual electromagnetic interference. In this case, the above-mentioned traditional connection filter cannot meet the application requirements because it cannot separate multiple wires into multiple groups of wires and shield the multiple groups of wires from each other during the plug-in electrical connection and filtering process. In addition, the socket of the traditional connection filter is generally connected to the filter housing by screws. This structure not only causes assembly trouble, but also is not conducive to achieving better shielding effect. Summary of the invention

[0006] The purpose of the present invention is to provide a highly efficient shielded multi-purpose connection filter in order to solve the above problems, which can shield three groups of wires with different purposes from each other during the plug-in electrical connection and filtering process.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions: A highly efficient shielded multi-purpose connection filter, comprising an input-end cable, a plug, a socket, a filter housing, a filter cover plate and an output-end cable, wherein the input-end cable is connected to the plug, the plug is plug-connected to the socket, the socket is arranged on the metal filter housing and connected to the input end of the filter element in the filter housing, the metal filter cover plate is installed at one end of the filter housing, and is characterized in that: the plurality of wires in the input-end cable include a first group of wires consisting of a plurality of wires not to be filtered, a second group of wires consisting of a plurality of wires to be filtered, and a third group of wires consisting of a plurality of wires to be filtered but having different uses from the second group of wires, the socket includes a metal socket shielding shell, and the A socket shielding shell is connected to the filter housing, a first end of the two ends of the socket shielding shell is located outside the filter housing, and a second end is located in the inner cavity of the filter housing, a socket insulator is filled in the socket shielding shell, a first socket plug assembly, a second socket plug assembly and a plurality of third socket contacts are arranged in the socket insulator, a plurality of third socket contacts arranged at intervals from each other are located at the outer periphery of the first socket plug assembly and the second socket plug assembly close to each other, a first end of the two ends of the first socket plug assembly is connected to the first group of wires through the plug, a first end of the two ends of the second socket plug assembly is connected to the second group of wires through the plug, a first end of the two ends of the plurality of third socket contacts is connected to the second group of wires through the plug, The plug is connected to the third group of wires, a middle transmission shielding shell protruding outward and made of metal is provided at a position corresponding to the first socket plug assembly and the second socket plug assembly in the second end of the socket shielding shell, the second end at both ends of the first socket plug assembly and the second end at both ends of the second socket plug assembly both pass through the middle transmission shielding shell, a first output end shielding shell protruding outward and made of metal is provided at a position corresponding to the first socket plug assembly at one end of the middle transmission shielding shell away from the plug, a middle cavity wall of the inner cavity of the filter housing is provided with a cavity partition boss, and a shielding partition is installed on the cavity partition boss to separate the inner cavity of the filter housing into a first inner cavity near the bottom and a first inner cavity near the top the second inner cavity of the filter, the middle transmission shielding shell passes through the partition through hole on the shielding partition and are shielded and connected to each other, the second end of the second socket plug assembly is located in the second inner cavity, the filter cover is installed at the open end of the second inner cavity, the first output end shielding shell passes through the first cover through hole on the filter cover and are shielded and connected to each other, the filter cover is shielded and connected with the second output end shielding shell, the second output end shielding shell is located on the side of the filter cover away from the second inner cavity and communicates with the second inner cavity, the shielding partition is shielded and connected with the third output end shielding shell, the third output end shielding shell is located on the side of the shielding partition away from the first inner cavity and communicates with the first inner cavity,The third output end shielding shell passes through the second cover plate through hole on the filter cover plate and is shielded and connected to each other. The second ends of the plurality of second socket plug-in components are respectively connected to the input end of the filter element located in the second inner cavity. The second ends of the plurality of third socket contact pieces are respectively connected to the input end of the filter element located in the first inner cavity. The plurality of wires in the three output end cables respectively pass through the first output end shielding shell, the second output end shielding shell, and the third output end shielding shell and are respectively connected to the second ends of the plurality of first socket plug-in components, the output end of the filter element located in the second inner cavity, and the output end of the filter element located in the first inner cavity.

[0008] Preferably, in order to improve the shielding effect between the input-end cable and the plug, between the plug and the socket, between the socket and the output-end cable, and between the filter element and the output-end cable, the first group of wires are all covered in a first insulating shielding sleeve, the second group of wires are all covered in a second insulating shielding sleeve, and the third group of wires are all covered in an insulating shielding sleeve of the input-end cable; the plug includes a metal plug shielding shell, the plug shielding shell is filled with a plug insulator, the plug insulator is provided with a first plug plug assembly, a second plug plug assembly and a plurality of third plug contacts, the first plug plug assembly includes a first plug metal shell, the first plug metal shell is filled with a plug insulator, and the first plug plug assembly is provided with a first plug plug assembly. The second plug assembly comprises a second plug metal shell, the second plug metal shell is filled with an insulator and the insulator is provided with a plurality of second plug contacts, a plurality of third plug contacts arranged at intervals from each other are arranged in the plug insulator and are located at the outer periphery of the first plug assembly and the second plug assembly close to each other; the plurality of wires of the first group of wires are respectively welded to the first ends of the two ends of the plurality of first plug contacts and a first input end metal shielding tail cover is sleeved outside the connection section, the plurality of wires of the second group of wires are respectively welded to the first ends of the two ends of the plurality of second plug contacts The first and second input-end metal shielding tail covers are welded and connected at the ends, and a second input-end metal shielding tail cover is sleeved outside the connecting section, the multiple wires of the third group of wires are respectively welded and connected to the first ends of the multiple third plug contacts at the two ends, the third input-end metal shielding tail cover is connected to the first ends of the plug shielding shell, and the first input-end metal shielding tail cover and the second input-end metal shielding tail cover are both located inside the third input-end metal shielding tail cover; the first socket plug assembly includes a first socket metal shell, the first socket metal shell is filled with an insulator, and a plurality of first socket contacts are arranged inside the insulator, the second socket plug assembly includes a second socket metal shell, the second socket metal shell is filled with an insulator, An insulator is provided inside the insulator, and the second ends of the first plug contacts are respectively plugged and connected with the first ends of the first socket contacts, the first plug metal shell is connected with the first socket metal shell, the second ends of the second plug contacts are respectively plugged and connected with the first ends of the second socket contacts, the second plug metal shell is connected with the second socket metal shell, the second ends of the third plug contacts are respectively plugged and connected with the first ends of the third socket contacts, and the second ends of the plug shielding shell are connected with the first end of the socket shielding shell;The second ends of the second socket contacts are respectively connected to the input end of the filter element in the second inner cavity, the second ends of the first socket contacts are respectively connected to the corresponding multiple wires in the output end cable, the second ends of the second socket contacts are respectively connected to the input end of the filter element in the second inner cavity, and the three output end metal shielding tail covers are respectively connected to the first output end shielding shell, the second output end shielding shell, and the third output end shielding shell and are respectively sleeved outside the three output end cables. ;

[0009] Preferably, in order to facilitate reliable connection and further improve the electromagnetic shielding effect, the first input end metal shielding tail cover is threadedly connected to the first plug metal shell, the second input end metal shielding tail cover is threadedly connected to the second plug metal shell, the third input end metal shielding tail cover is threadedly connected to the plug shielding shell, the three output end metal shielding tail covers are respectively threadedly connected to the first output end shielding shell, the second output end shielding shell, and the third output end shielding shell, the first input end metal shielding tail cover and the first plug metal shell, the second input end metal shielding tail cover and the second plug metal shell, the third input end metal shielding tail cover and the plug shielding shell, and the first plug Conductive rubber rings are respectively provided between the head metal shell and the first socket metal shell, between the second plug metal shell and the second socket metal shell, between the plug shielding shell and the socket shielding shell, between the middle transmission shielding shell and the shielding partition, between the first output end shielding shell and the filter cover, between the third output end shielding shell and the filter cover, between the first output end shielding shell and the corresponding output end metal shielding tail cover, between the second output end shielding shell and the corresponding output end metal shielding tail cover, between the third output end shielding shell and the corresponding output end metal shielding tail cover, between the shielding partition and the partition cavity boss, and between the filter cover and the opening end of the second inner cavity.

[0010] Preferably, in order to reliably connect the plug and the socket, an outer convex ring is provided on the outer wall of the second end of the plug shielding shell, and an outer thread is provided on the outer wall of the first end of the socket shielding shell. The first end of the connecting ring is connected to the external thread of the first end of the socket shielding shell, and an inner convex ring is provided on the inner wall of the second end of the connecting ring. The second end of the connecting ring is sleeved on the outside of the second end of the plug shielding shell and the inner convex ring is matched with the outer convex ring for connection.

[0011] Preferably, in order to further improve the electromagnetic shielding effect and simplify the structure and reduce the volume, the socket shielding shell and the filter housing are integrally formed.

[0012] Preferably, in order to facilitate installation of the connection filter, the bottom edge of the filter housing extends toward the peripheral direction to form a mounting flange.

[0013] The beneficial effects of the present invention are: The present invention organically integrates the socket and the filter housing, arranges a first socket plug-in assembly, a second socket plug-in assembly and a plurality of third socket contacts respectively connected to three groups of wires for different purposes in the socket, arranges a first inner cavity and a second inner cavity shielded from each other in the filter housing, passes the first socket plug-in assembly through the first inner cavity, the second inner cavity and the filter cover plate, and is connected to the corresponding wire in the output end cable, and realizes signal shielding during docking, connects the second socket plug-in assembly to the filter element in the first inner cavity, and then to the corresponding wire in the output end cable, and realizes signal shielding during docking, connects the second socket contact to the filter element in the second inner cavity, and then to the corresponding wire in the output end cable, and realizes signal shielding during docking, thereby realizing the function of mutual electromagnetic shielding between the three groups of wires, and meeting the special application requirements of small aircraft such as fighters, helicopters and drones, that is, the first group of wires are not filtered, and the first group of wires are not filtered. , the second group of wires and the third group of wires need to be filtered but have different uses and each group of wires are electromagnetically isolated from each other in the filter; by designing corresponding shielding structures between the input cable and the plug, between the plug and the socket, between the socket and the output cable, and between the filter element and the output cable, a reliable electromagnetic shielding structure is adopted for each group of wires at the connection position with the plug, the connection position with the plug and the socket, the connection position during the filtering process, and the connection position with the wires in the output cable after filtering. Not only the plug-in electrical connection function of the three groups of wires with different purposes is realized, but also the function of mutual electromagnetic shielding between the three groups of wires is realized, which better meets the special application requirements of small aircraft such as fighter jets, helicopters, and drones, that is, the first group of wires are not filtered, the second and third groups of wires need to be filtered but have different uses and each group of wires are electromagnetically isolated from each other during the plug-in electrical connection and filtering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the three-dimensional views of the multi-purpose connection filter with high efficiency shielding according to the present invention before assembly, and is a top view; Figure 2 This is the second stereoscopic view of the multi-purpose connection filter with high efficiency shielding according to the present invention before assembly, and the view is from an upward angle; Figure 3 This is a three-dimensional diagram of the assembled high-efficiency shielded multi-purpose connection filter of the present invention, which is a top view.

[0015] In the figure, 1-output end cable, 2-output end metal shielding tail cover, 3-second output end shielding shell, 4-first cover plate through hole, 5-second cover plate through hole, 6-filter cover, 7-partition plate through hole, 8-third output end shielding shell, 9-shielding partition, 10-second socket plug-in assembly, 11-first output end shielding shell, 12-partition cavity boss, 13-middle transmission shielding shell, 14-third socket contact, 15-inner cavity, 16-filter housing, 17-mounting flange, 1 8-second plug connector, 19-first plug connector, 20-third plug contact, 21-plug shielding shell, 22-connecting ring, 23-first input end metal shielding tail cover, 24-second input end metal shielding tail cover, 25-third group of wires, 26-first group of wires, 27-second group of wires, 28-input end cable, 29-third input end metal shielding tail cover, 30-socket shielding shell, 31-external thread, 32-first socket connector, 33-external convex ring. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1-Figure 3As shown, the high-efficiency shielded multi-purpose connection filter of the present invention comprises an input-end cable 28, a plug, a socket, a filter housing 16, a filter cover 6 and an output-end cable 1, wherein the input-end cable 28 is connected to the plug, the plug is plug-connected to the socket, the socket is arranged on the metal filter housing 16 and is connected to the input end of the filter element (not shown in the figure) in the filter housing 16, the metal filter cover 6 is installed at one end of the filter housing 16, the multiple wires in the input-end cable 28 include a first group of wires 26 composed of multiple wires not to be filtered, a second group of wires 27 composed of multiple wires to be filtered, and a third group of wires 25 composed of multiple wires to be filtered but having different uses from the second group of wires 27, The socket includes a metal socket shielding shell 30, which is connected to the filter housing 16. The first end of the two ends of the socket shielding shell 30 is located outside the filter housing 16, and the second end is located in the inner cavity 15 of the filter housing 16. The socket shielding shell 30 is filled with a socket insulator (not marked in the figure), and the socket insulator is provided with a first socket plug assembly 32, a second socket plug assembly 10 and a plurality of third socket contacts 14. The plurality of third socket contacts 14 arranged at intervals from each other are arranged in the socket insulator and are located on the outer periphery of the first socket plug assembly 32 and the second socket plug assembly 10 that are close to each other. The first end of the two ends of the first socket plug assembly 32 is connected to the first group of wires 26 through the plug, and the second plug assembly 10 is connected to the first group of wires 26 through the plug. The first end of the two ends of the socket plug assembly 10 is connected to the second group of wires 27 through the plug, the first end of the two ends of the plurality of third socket contacts 14 is connected to the third group of wires 25 through the plug, the second end of the two ends of the plug shielding shell 21 is connected to the first end of the socket shielding shell 30, and the second end of the socket shielding shell 30 is provided with a metal middle transmission shielding shell 13 protruding outward at a position corresponding to the first socket plug assembly 32 and the second socket plug assembly 10, the second end of the two ends of the first socket plug assembly 32 and the second end of the two ends of the second socket plug assembly 10 both pass through the middle transmission shielding shell 13, and the middle transmission shielding shell 13 is provided with a position corresponding to the first socket plug assembly 32 at an end away from the plug The outer end of the first output end shielding shell 11 is raised and made of metal. The middle cavity wall of the inner cavity 15 of the filter housing 16 is provided with a cavity boss 12 and the shielding partition 9 is installed on the cavity boss 12 to separate the inner cavity 15 of the filter housing 16 into a first inner cavity near the bottom (not marked in the figure) and a second inner cavity near the top (not marked in the figure). The middle transmission shielding shell 13 passes through the partition through hole 7 on the shielding partition 9 and is shielded and connected to each other. The second end of the second socket plug-in assembly 10 is located in the second inner cavity. The filter cover 6 is installed at the open end of the second inner cavity. The first output end shielding shell 11 passes through the first cover through hole 4 on the filter cover 6 and is shielded and connected to each other. The filter cover 6 is shielded and connected with the second output end shielding shell 3.The second output end shielding shell 3 is located on the side of the filter cover plate 6 away from the second inner cavity and communicates with the second inner cavity. The third output end shielding shell 8 is shielded and connected to the shielding partition 9. The third output end shielding shell 8 is located on the side of the shielding partition 9 away from the first inner cavity and communicates with the first inner cavity. The third output end shielding shell 8 passes through the second cover plate through hole 5 on the filter cover plate 6 and is shielded and connected to each other. The second ends of the two ends of the plurality of second socket contacts are respectively connected to the input end of the filter element (not marked in the figure) located in the second inner cavity. The second ends of the two ends of the plurality of third socket contacts 14 are respectively connected to the input end of the filter element (not marked in the figure) located in the first inner cavity. The plurality of wires (not marked in the figure) in the three output end cables 1 pass through the first output end shielding shell 11, the second output end shielding shell 3, and the third output end shielding shell 8 respectively and are respectively connected to the second ends of the plurality of first socket plug-in components 32, the output end of the filter element located in the second inner cavity, and the output end of the filter element located in the first inner cavity.

[0017] like Figure 1-Figure 3 As shown, the present invention also discloses the following more optimized specific structures: In order to improve the shielding effect between the input-end cable 28 and the plug, between the plug and the socket, between the socket and the output-end cable 1, and between the filter element and the output-end cable 1, the first group of wires 26 are all covered in a first insulating shielding sleeve (not marked in the figure), the second group of wires 27 are all covered in a second insulating shielding sleeve (not marked in the figure), and the third group of wires 25 are all covered in an insulating shielding sleeve (not marked in the figure) of the input-end cable 28; the plug includes a metal plug shielding shell 21, the plug shielding shell 21 is filled with a plug insulator (not marked in the figure), the plug insulator is provided with a first plug plug assembly 19, a second plug plug assembly 18 and a plurality of third plug contacts 20, the first plug plug assembly 19 includes a first plug metal shell (not marked in the figure), the first plug metal shell is filled with an insulator (not marked in the figure) and the insulator is provided with a plurality of first plug contacts (not marked in the figure), the second plug plug assembly 18 includes a second plug metal shell (not marked in the figure), the first plug metal shell is filled with an insulator (not marked in the figure) and the insulator is provided with a plurality of first plug contacts (not marked in the figure), the second plug plug assembly 18 includes a second plug metal shell (not marked in the figure), the first plug The metal shells of the two plugs are filled with an insulator (not marked in the figure) and a plurality of second plug contacts (not marked in the figure) are arranged in the insulator. A plurality of third plug contacts 20 arranged at intervals from each other are arranged in the plug insulator and are located on the outer periphery of the first plug connector assembly 19 and the second plug connector assembly 18 that are close to each other. The plurality of wires of the first group of wires 26 are respectively welded to the first ends of the two ends of the plurality of first plug contacts and a first input end metal shielding tail cover 23 is sleeved outside the connecting section. The plurality of wires of the second group of wires 27 are respectively welded to the first ends of the two ends of the plurality of second plug contacts and a second input end metal shielding tail cover 24 is sleeved outside the connecting section. The plurality of wires of the third group of wires 25 are respectively welded to the first ends of the two ends of the plurality of third plug contacts 20. The third input end metal shielding tail cover 29 is connected to the first end of the two ends of the plug shielding shell 21 and the first input end metal shielding tail cover 23 and the second input end metal shielding tail cover 24 are both located inside the third input end metal shielding tail cover 29.The first socket plug assembly 32 includes a first socket metal shell (not marked in the figure), the first socket metal shell is filled with an insulator (not marked in the figure) and a plurality of first socket contacts (not marked in the figure) are arranged in the insulator, the second socket plug assembly 10 includes a second socket metal shell (not marked in the figure), the second socket metal shell is filled with an insulator (not marked in the figure) and a plurality of second socket contacts (not marked in the figure) are arranged in the insulator, the second ends of the plurality of first plug contacts are respectively plugged and connected with the first ends of the plurality of first socket contacts, the first plug metal shell is connected to the first socket metal shell, the second ends of the plurality of second plug contacts are respectively plugged and connected with the first ends of the plurality of second socket contacts, the second plug metal shell is connected to the The second socket metal shell is connected, the second ends of the multiple third plug contacts 20 are respectively connected with the first ends of the multiple third socket contacts 14, and the second ends of the plug shielding shell 21 are connected with the first end of the socket shielding shell 30; the second ends of the multiple second socket contacts are respectively connected with the input end of the filter element located in the second inner cavity, the second ends of the multiple first socket contacts are respectively connected with the multiple wires in the corresponding output end cable, and the second ends of the multiple second socket contacts are respectively connected with the input end of the filter element located in the second inner cavity. The three output end metal shielding tail covers 2 are respectively connected with the first output end shielding shell 11, the second output end shielding shell 3, and the third output end shielding shell 8 and are respectively sleeved outside the three output end cables 1. ;

[0018] In order to facilitate reliable connection and further improve the electromagnetic shielding effect, the first input end metal shielding tail cover 23 is threadedly connected to the first plug metal shell, the second input end metal shielding tail cover 24 is threadedly connected to the second plug metal shell, the third input end metal shielding tail cover 29 is threadedly connected to the plug shielding shell 21, and the three output end metal shielding tail covers 2 are respectively threadedly connected to the first output end shielding shell 11, the second output end shielding shell 3, and the third output end shielding shell 8. The first input end metal shielding tail cover 23 is threadedly connected to the first plug metal shell, the second input end metal shielding tail cover 24 is threadedly connected to the second plug metal shell, the third input end metal shielding tail cover 29 is threadedly connected to the plug shielding shell 21, and the first plug metal shell Conductive rubber rings (not marked or visible in the figure) are respectively provided between the first socket metal shell, between the second plug metal shell and the second socket metal shell, between the plug shielding shell 21 and the socket shielding shell 30, between the middle transmission shielding shell 13 and the shielding partition 9, between the first output end shielding shell 11 and the filter cover 6, between the third output end shielding shell 8 and the filter cover 6, between the first output end shielding shell 11 and the corresponding output end metal shielding tail cover 2, between the second output end shielding shell 3 and the corresponding output end metal shielding tail cover 2, between the third output end shielding shell 8 and the corresponding output end metal shielding tail cover 2, between the shielding partition 9 and the cavity boss 12, and between the filter cover 6 and the opening end of the second inner cavity.

[0019] In order to reliably connect the plug and the socket, an outer convex ring 33 is provided on the outer wall of the second end of the plug shielding shell 21, and an outer thread 31 is provided on the outer wall of the first end of the socket shielding shell 30. The first end of the connecting ring 22 is connected to the outer thread 31 of the first end of the socket shielding shell 30, and an inner convex ring (not marked in the figure) is provided on the inner wall of the second end of the connecting ring 22. The second end of the connecting ring 22 is sleeved on the outside of the second end of the plug shielding shell 21 and the inner convex ring is matched with the outer convex ring 33 for connection.

[0020] In order to further improve the electromagnetic shielding effect and simplify the structure and reduce the volume, the socket shielding shell 30 and the filter housing 16 are integrally formed.

[0021] In order to facilitate installation of the connection filter, the bottom edge of the filter housing 16 extends toward the outer circumference to form a mounting flange 17 .

[0022] like Figure 1-Figure 3 As shown, when used, firstly, the input end cable 28 and the three output end cables 1 are connected and assembled with the corresponding components of the multi-purpose connection filter of the present invention according to the above structure, so as to form Figure 3In the product shown, the wires in the input-end cable 28 are connected to a power source or other electrical equipment not shown in the figure, and the wires in the three output-end cables 1 are connected to electrical equipment or detection equipment not shown in the figure; the electrical signals of the multiple wires in the first group of wires 26 are respectively transmitted to the corresponding output-end cable 1 through the multiple first plug contacts in the first plug-in assembly 19 and the multiple first socket contacts in the first socket-in assembly 32, and the full electromagnetic shielding function with other wires and the outside world is realized through the first input-end metal shielding tail cover 23, the first plug metal shell, the first socket metal shell, the shielding partition 9, the filter cover 6, the first output-end shielding shell 11 and the corresponding output-end metal shielding tail cover 2; the electrical signals of the multiple wires in the second group of wires 27 are respectively transmitted to the corresponding one through the multiple second plug contacts in the second plug-in assembly 18, the multiple second socket contacts in the second socket-in assembly 10 and the corresponding filtering elements. The output-end cable 1 realizes the full electromagnetic shielding function with other wires and the outside world through the second input-end metal shielding tail cover 24, the second plug metal shell, the second socket metal shell, the middle transmission shielding shell 13, the shielding partition 9, the filter cover 6, the second output-end shielding shell 3 and the corresponding output-end metal shielding tail cover 2; the electrical signals of multiple wires in the third group of wires 25 are respectively transmitted to the corresponding output-end cable 1 after passing through multiple third plug contacts 20, the third socket contacts 14, and the corresponding filter elements, and realize the full electromagnetic shielding function with the outside world and other wires through the third input-end metal shielding tail cover 29, the plug shielding shell 21, the socket shielding shell 30, the filter shell 16, the shielding partition 9, the filter cover 6, the third output-end shielding shell 8 and the corresponding output-end metal shielding tail cover 2; the wires in the three output-end cables 1 outputted at the end can be directly connected to the corresponding electrical equipment or detection equipment, etc., which is very convenient to use.

[0023] The above embodiments are only preferred embodiments of the present invention and are not limitations of the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A multi-purpose connection filter with high efficiency shielding, comprising an input-end cable, a plug, a socket, a filter housing, a filter cover plate and an output-end cable, wherein the input-end cable is connected to the plug, the plug is plug-connected to the socket, the socket is arranged on the metal filter housing and connected to the input end of the filter element in the filter housing, and the metal filter cover plate is installed at one end of the filter housing, characterized in that: The plurality of wires in the input-end cable include a first group of wires consisting of a plurality of wires not to be filtered, a second group of wires consisting of a plurality of wires to be filtered, and a third group of wires consisting of a plurality of wires to be filtered but having different uses from those of the second group of wires. The socket includes a metal socket shielding shell, the socket shielding shell is connected to the filter housing, a first end of the two ends of the socket shielding shell is located outside the filter housing, and a second end is located in an inner cavity of the filter housing, the socket shielding shell is filled with a socket insulator, a first socket plug-in assembly, a second socket plug-in assembly and a plurality of third socket contacts are arranged in the socket insulator, and the plurality of third socket contacts arranged at intervals from each other are located close to each other. The outer periphery of the first socket plug assembly and the second socket plug assembly, the first end of the two ends of the first socket plug assembly is connected to the first group of wires through the plug, the first end of the two ends of the second socket plug assembly is connected to the second group of wires through the plug, and the first end of the two ends of a plurality of third socket contacts is connected to the third group of wires through the plug, and the second end of the second end of the socket shielding shell corresponding to the first socket plug assembly and the second socket plug assembly is provided with a middle transmission shielding shell protruding outward and made of metal, the second end of the two ends of the first socket plug assembly and the second end of the two ends of the second socket plug assembly both pass through the middle transmission shielding shell, and the middle transmission A first output-end shielding shell protruding outward and made of metal is provided at a position corresponding to the first socket plug-in assembly at one end of the shielding shell away from the plug, a cavity partition boss is provided on the middle cavity wall of the inner cavity of the filter housing, and a shielding partition is installed on the cavity partition boss to separate the inner cavity of the filter housing into a first inner cavity near the bottom and a second inner cavity near the top, the middle transmission shielding shell passes through the partition through hole on the shielding partition and are shielded and connected to each other, the second end of the second socket plug-in assembly is located in the second inner cavity, the filter cover is installed on the open end of the second inner cavity, the first output-end shielding shell passes through the first cover through hole on the filter cover and are shielded and connected to each other, the filter cover The upper shielding is connected with a second output end shielding shell, the second output end shielding shell is located on the side of the filter cover away from the second inner cavity and communicated with the second inner cavity, the shielding partition is connected with a third output end shielding shell, the third output end shielding shell is located on the side of the shielding partition away from the first inner cavity and communicated with the first inner cavity, the third output end shielding shell passes through the second cover plate through hole on the filter cover and is shielded and connected to each other, the second ends of the plurality of second socket plug-in assemblies are respectively connected to the input end of the filter element located in the second inner cavity, and the second ends of the plurality of third socket contact pieces are respectively connected to the input end of the filter element located in the first inner cavity,The multiple wires in the three output end cables respectively pass through the first output end shielding shell, the second output end shielding shell, and the third output end shielding shell and are respectively connected to the second ends of the first socket plug components, the output end of the filter element located in the second inner cavity, and the output end of the filter element located in the first inner cavity.

2. The multi-purpose connection filter with high efficiency shielding according to claim 1 is characterized in that: The first group of wires are all covered in a first insulating shielding sleeve, the second group of wires are all covered in a second insulating shielding sleeve, and the third group of wires are all covered in an insulating shielding sleeve of the input-end cable; The plug comprises a metal plug shielding shell, the plug shielding shell is filled with a plug insulator, a first plug plug assembly, a second plug plug assembly and a plurality of third plug contacts are arranged in the plug insulator, the first plug plug assembly comprises a first plug metal shell, the first plug metal shell is filled with an insulator and a plurality of first plug contacts are arranged in the insulator, the second plug plug assembly comprises a second plug metal shell, the second plug metal shell is filled with an insulator and a plurality of second plug contacts are arranged in the insulator, and a plurality of third plug contacts arranged at intervals from each other are arranged in the plug insulator and located at the outer periphery of the first plug plug assembly and the second plug plug assembly which are close to each other; The multiple wires of the first group of wires are respectively welded to the first ends of the two ends of the multiple first plug contacts, and a first input end metal shielding tail cover is sleeved outside the connection section; the multiple wires of the second group of wires are respectively welded to the first ends of the two ends of the multiple second plug contacts, and a second input end metal shielding tail cover is sleeved outside the connection section; the multiple wires of the third group of wires are respectively welded to the first ends of the two ends of the multiple third plug contacts, the third input end metal shielding tail cover is connected to the first end of the two ends of the plug shielding shell, and the first input end metal shielding tail cover and the second input end metal shielding tail cover are both located in the third input end metal shielding tail cover; the first socket plug assembly includes a first socket metal shell The first socket metal shell is filled with an insulator and a plurality of first socket contacts are arranged in the insulator, the second socket plug assembly includes a second socket metal shell, the second socket metal shell is filled with an insulator and a plurality of second socket contacts are arranged in the insulator, the second ends of the first plug contacts are respectively plugged and connected with the first ends of the first socket contacts, the first plug metal shell is connected to the first socket metal shell, the second ends of the second plug contacts are respectively plugged and connected with the first ends of the second socket contacts, the second plug metal shell is connected to the second socket metal shell, the second ends of the third plug contacts are respectively plugged and connected with the first ends of the second socket contacts, The second ends of the plug shielding shell are connected to the first end of the socket shielding shell; the second ends of the second socket contacts are connected to the input end of the filter element located in the second inner cavity, the second ends of the first socket contacts are connected to the corresponding multiple wires in the output end cable, the second ends of the second socket contacts are connected to the input end of the filter element located in the second inner cavity, and the three output end metal shielding tail covers are connected to the first output end shielding shell, the second output end shielding shell, and the third output end shielding shell, and are respectively sleeved outside the three output end cables.

3. The multi-purpose connection filter with high efficiency shielding according to claim 2 is characterized in that: The first input end metal shielding tail cover is threadedly connected to the first plug metal shell, the second input end metal shielding tail cover is threadedly connected to the second plug metal shell, the third input end metal shielding tail cover is threadedly connected to the plug shielding shell, the three output end metal shielding tail covers are respectively threadedly connected to the first output end shielding shell, the second output end shielding shell, and the third output end shielding shell, the first input end metal shielding tail cover and the first plug metal shell, the second input end metal shielding tail cover and the second plug metal shell, the third input end metal shielding tail cover and the plug shielding shell, the first plug metal shell and the first socket metal shell. Conductive rubber rings are respectively provided between the metal shells, between the second plug metal shell and the second socket metal shell, between the plug shielding shell and the socket shielding shell, between the middle transmission shielding shell and the shielding partition, between the first output end shielding shell and the filter cover, between the third output end shielding shell and the filter cover, between the first output end shielding shell and the corresponding output end metal shielding tail cover, between the second output end shielding shell and the corresponding output end metal shielding tail cover, between the third output end shielding shell and the corresponding output end metal shielding tail cover, between the shielding partition and the compartment cavity boss, and between the filter cover and the opening end of the second inner cavity.

4. The high-efficiency shielded multi-purpose connection filter according to claim 2 or 3, characterized in that: An outer convex ring is provided on the outer wall of the second end of the plug shielding shell, and an outer thread is provided on the outer wall of the first end of the socket shielding shell. The first end of the connecting ring is connected to the outer thread of the first end of the socket shielding shell, and an inner convex ring is provided on the inner wall of the second end of the connecting ring. The second end of the connecting ring is sleeved on the outside of the second end of the plug shielding shell and the inner convex ring is matched and connected with the outer convex ring.

5. The high-efficiency shielded multi-purpose connection filter according to any one of claims 1 to 3, characterized in that: The socket shielding shell and the filter housing are integrally formed.

6. The multi-purpose connection filter with high efficiency shielding according to any one of claims 1 to 3, characterized in that: The bottom edge of the filter housing extends toward the outer circumference to form a mounting flange.

Images