Filtering structure, micro-distance filtering connector socket and filtering implementation method thereofTechnical Field
The invention relates to a filtering structure, a micro-distance filtering connector socket and a filtering implementation method thereof, and belongs to the technical field of filtering structures.
Background
The filtering performance is one of key performance indexes of a plurality of connectors, and along with the improvement of science and technology, the connectors are required to have the filtering performance in a plurality of fields of aviation, spaceflight, weaponry and electronics.
In the prior art, the invention patent with application number 201711337461.8, applied by shenyang xinghua aeronautical electrical appliances, llc, discloses a quad-coaxial filter connector. The connector is characterized in that a square disc shell is arranged outside the connector, a second contact pin, a second pin rear insulator, a filter plate, a grounding spring, a four-coaxial pin-mounting insulator assembly, a second clamp spring, a contact pin shell, a positioning sleeve, a first pin front insulator and a second pin rear insulator are arranged inside the square disc shell, the second contact pins are distributed and embedded in the second pin rear insulator, the second pin rear insulator is fixed inside the square disc shell and on a cross section which is vertical to the square disc shell in the axial direction, the second contact pin is welded with the filter plate, and the filter plate is connected with the square disc shell through the grounding spring; the four coaxial needle-mounting insulator assembly is fixed in the contact pin shell through a second snap spring and is fixed with the positioning table of the inner hole cavity of the first needle front insulator and the second needle rear insulator through the positioning sleeve. The scheme adds a filtering function to a common four-coaxial socket and can protect the normal transmission of electric signals.
The invention patent with application number 201811482207.1 applied by the group limited company of the Sichuan Huafeng corporation discloses a filter connector, which comprises a connector component and a tail cover sealing component, wherein the connector component comprises a shell, a contact component and a filter component, the shell is provided with an installation cavity penetrating through the shell, and the middle part of the shell is provided with an annular flange; the tail cover sealing assembly is arranged on the flange plate, and the contact element assembly is arranged in the mounting cavity in a plastic package mode; the filter component comprises a jack, a printed circuit board, a filter and a contact pin arranged on the contact component; the filter is arranged on the flange plate at the side of the tail cover sealing assembly, and part of the filter extends out of the tail cover sealing assembly; the filter is electrically connected with the printed circuit board, and the jack and part of the contact pins are welded with the printed circuit board.
Further, a utility model with application number 201821592662.2, which is applied by taike electronics (shanghai) limited, discloses a filter and a connector having a filtering function. The filter includes: a filtering component for shielding electronic interference signals; the connecting terminal is arranged in the filter assembly, and part of the connecting terminal penetrates out of the filter assembly; the filter circuit board is arranged in the filter assembly; the fastener is used for connecting the filter circuit board to the filter assembly; the protecting cover covers the filter circuit board; the protecting cover is provided with a containing hole which is provided with a bottom wall; the fastener is worn to establish in the accommodation hole, and the diapire forms the backstop to the fastener and prevents that the fastener from passing through the accommodation hole. In the filter that this scheme provided and the connector that has filtering function, be equipped with the accommodation hole that is used for holding the fastener on the protecting cover, the diapire of accommodation hole forms the backstop to the fastener, prevents that the fastener from wearing out the accommodation hole, leads to droing of fastener. Even if the fastener loosens, the fastener still is located the accommodate hole, can not produce abnormal sound, leads to the system short circuit.
The above techniques all provide a good improvement to the filter structure of the connector. However, due to the problems of unstable technology, small required space and the like, the structures of the connectors with the filtering function are mostly welded, so that the filtering function of the connectors is influenced due to the temperature change in the using process. Leading to the failure of many devices, which is not suitable for some demanding situations.
Therefore, the invention provides a filtering structure invention method which has reasonable space and simultaneously meets the filtering function and other performance indexes.
Disclosure of Invention
The invention aims to provide a filtering structure, a micro-distance filtering connector socket and a filtering implementation method thereof, so as to overcome the defects of the prior art.
the invention is realized by the following steps:
A filtering structure comprises a grounding plate used as a shell and a monolithic tube capacitor used as a filtering tube, wherein the monolithic tube capacitor is of a hollow tube structure, a needle tube-shaped jack with one thick end and one thin end is arranged in the monolithic tube capacitor, and the thin end of the jack is inserted into the hollow tube of the monolithic tube capacitor; the ground plate is of a cavity structure with a rectangular section, the inner middle part of the ground plate is divided into an upper cavity and a lower cavity by a horizontal partition plate, and the horizontal partition plate is provided with uniformly distributed middle holes; the monolithic tube capacitor and the jack are assembled and then jointly installed in the grounding plate.
the monolithic tube capacitor penetrates through a middle hole in the horizontal partition plate, and DG-3 glue is filled in the upper cavity and the lower cavity so that the monolithic tube capacitor and the horizontal partition plate are solidified into a whole.
Furthermore, an inner groove is formed in the waist part of the outer contour of the grounding plate, and a shielding spring is wound on the inner groove.
Further, the outer diameter profile of the thick short end of the jack is consistent with that of the monolithic tube capacitor.
Further, the aforementioned shield spring is made of a material that can be elastically deformed.
The micro-distance filter connector socket adopting the filter structure comprises a socket shell and an insulating base arranged in the socket shell, wherein the filter structure is arranged in the socket shell, the top of a grounding plate is clamped below the insulating base, and the socket shell compresses and presses shielding springs from two sides; the socket and the plug are connected through a connecting nut to realize screw connection.
the filtering implementation method adopting the structure is as follows: the signal of the unused frequency band entering from the plug is transmitted into the socket shell through the grounding plate and the shielding spring due to the action of the monolithic tube type capacitor to realize the filtering function.
Compared with the prior art, the invention has the main advantages that:
the filtering structure of the invention avoids the complexity and difficult processing of the filtering function which can be realized only by welding in the past. The connector can be effectively used in certain environments with higher space requirements, and is suitable for performance indexes of miniaturization and high reliability of the existing connector. The structure space is small, and the performance of the structure space is superior to the performance index of the existing filter structure connector.
Drawings
FIG. 1 is a schematic diagram of a filter structure of the present invention when not installed in a receptacle;
FIG. 2 is a diagram of a filter structure when the present invention is installed in a receptacle;
FIG. 3 is a schematic diagram of a monolithic tube capacitor and jack connection;
FIG. 4 is a front view of a monolithic tubular capacitor and receptacle in a ground plate;
fig. 5 is a top view of a ground plate;
fig. 6 is a side view of the ground plate;
FIG. 7 is a side view of a monolithic tubular capacitor and jack embedded in a ground plate;
FIG. 8 is an exploded view of the construction of the monolithic tubular capacitor and jack embedded in the ground plate;
FIG. 9 is a schematic view of a shield spring structure and installation;
FIG. 10 is a schematic view of the socket housing and the insulating base;
fig. 11 is a schematic view of a filter structure and a socket installation.
Description of reference numerals: 1-jack, 2-connecting nut, 3-socket shell, 4-insulating base, 5-grounding plate, 6-shielding spring, 7-monolithic tubular capacitor, 8-DG-3 glue, 9-rivet-turned part, 10-middle hole, 11-upper cavity, 12-lower cavity, 13-inner groove and 14-horizontal partition plate.
Detailed Description
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, it can be seen that the filter structure of the present invention includes a ground plate 5 as a housing and a monolithic tube capacitor 7 as a filter tube, and it can be seen from the illustration in fig. 3 that the monolithic tube capacitor 7 has a hollow tube structure, a needle tube-shaped jack 1 with a thick upper end, a short lower end and a long and thin lower end is disposed in the monolithic tube capacitor 7, and the long and thin end of the jack 1 is inserted into the hollow tube of the monolithic tube capacitor 7 to form an assembled structure as shown in fig. 3; as shown in fig. 5-8, the ground plate 5 is a cavity structure with a rectangular cross section (four corners are rounded), the inner middle part of the ground plate is divided into an upper cavity 11 and a lower cavity 12 by a horizontal partition plate 14, and the horizontal partition plate 14 is provided with uniformly distributed middle holes 10; the monolithic tube capacitor 7 and the jack 1 are assembled and then jointly installed in the ground plate 5, during installation, the monolithic tube capacitor 7 penetrates through a middle hole 10 in a horizontal partition plate 14, and DG-3 glue 8 is filled in an upper cavity 11 and a lower cavity 12 to enable the monolithic tube capacitor 7 and the horizontal partition plate 14 to be solidified into a whole, so that the structure shown in figure 4 is formed.
The outer diameter profile of the thick and short ends of the jack 1 is consistent with that of the monolithic tube capacitor 7, the diameter of the thin and long ends is matched with the aperture of a hollow hole of the monolithic tube capacitor 7, and the jack is assembled according to the structure shown in fig. 2.
the waist part of the outer contour of the grounding plate 5 is provided with an inner groove 14, and the shielding spring 6 is wound on the inner groove 14. The shield spring 6 is constructed as shown in fig. 9, and is wound around a circumference of the inner groove 14 which surrounds the outer contour of the floor panel 5. The shield spring 6 is made of a material that can be elastically deformed.
The socket comprises a socket shell 3 and an insulating base 4 arranged in the socket shell, wherein a filtering structure is arranged in the socket shell 3 during assembly, the top of a grounding plate 5 is clamped below the insulating base 4, and the socket shell 3 compresses and presses shielding springs 6 from two sides; the socket and the plug are connected by the connecting nut 2 to realize screw connection, as shown in fig. 10-11.
During specific implementation, firstly, the slender end of the jack 1 is coated with soldering paste and then penetrates into the monolithic tube type capacitor 7 serving as a filter tube to be welded and fixed, then the middle hole of the ground plate 5 is coated with the soldering paste, the welded monolithic tube type capacitor 7 and the jack 1 are installed into the middle hole of the ground plate 5 together, the surface of the monolithic tube type capacitor 7 is welded again to enable the jack 1, the monolithic tube type capacitor 7 and the ground plate 5 to be integrated, then DG-3 glue 8 is sequentially poured into the upper cavity and the lower cavity of the ground plate 5 to be solidified, and finally the shielding spring 6 is wound around the ground plate 5 to form an integrated body.
After the insulation base 4 is correspondingly installed at the bottom end of the socket shell 3, the whole filtering structure consisting of the jack 1, the grounding plate 5, the shielding spring 6, the monolithic tube type capacitor 7 and the DG-3 glue 8 is installed into the socket shell 3, then the DG-3 glue 8 is poured into the slender end of the jack 1, and at the moment, the inner wall of the socket shell 3 can form elastic contact with the shielding spring 6 to achieve the filtering function. The two ends of the connecting nut 2 are connected with the socket shell 3 through rivet turning, and the rivet turning part 9 is shown in fig. 2. Thus, the micro-distance filter connector effectively achieves the filtering function simply by the shielding spring 6 surrounding the grounding plate 5 for one circle and elastically contacting the socket shell 3. The socket connector can be connected with the hard board through the tail end of the jack in a welding mode, the self-contained connecting nut 2 of the socket is locked with the screw of the plug head band, and the plug outer shell and the connected socket outer shell 3 cannot fall off and are separated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.