Built-in filter connector

Abstract

The invention discloses an internally-installed filtering connector, relates to the technical field of electric connectors, and solves the problems that a filtering connector in the prior art is complex in structure, high in cost and poor in reliability. The filter comprises an installation base, one side of the installation base is an installation end face, the other side of the installation base is provided with a filter circuit board and a packaging shell which is detachably connected to the installation base and used for packaging the filter circuit board, the installation base is further provided with a conductive terminal and a lining which are matched with the filter circuit board, and the conductive terminal extends out of the packaging shell. And a magnetic ring corresponding to the conductive terminal is arranged on the packaging shell. The installation end face is attached to the installation plate to form an internal installation mode, the filter circuit board is matched with the conductive terminals and packaged through the packaging shell and the installation base, the magnetic ring is arranged on the packaging shell to form the filter connector, and the filter connector has the advantages of being few in parts, simple in overall structure, easy to assemble, detachable, high in reliability, high in reliability and the like. And the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and particularly to a filtering connector. Background Art

[0002] As one of the important types of electrical connectors, filtering electrical connectors have been widely used in many fields such as automobiles, aviation, aerospace, and communications. A filtering electrical connector is formed by installing a filter or a filtering circuit on the contact of a common electrical connector, which can effectively suppress electromagnetic interference to ensure the integrity of the signal. Currently, the filtering connectors on the market generally have problems such as relatively complex structures, high costs, and poor reliability. And the connectors on the current market are generally installed by inserting from the outside to the inside, which is often restricted by the external space.

[0003] In the prior art, for example, a filtering connector with electromagnetic compatibility disclosed in a Chinese patent with a publication date of November 12, 2019 and a publication number of CN 110444967 A belongs to the technical field of electromagnetic compatibility devices for space-limited systems, and includes a filtering connector body and a filtering component, a dust-proof unit, and a sealing unit integrated on the filtering connector body; the filtering connector body includes a housing, a mounting plate, a contact component, and a printed circuit board; the mounting plate is arranged inside the housing, the printed circuit board is arranged at the top of one side of the housing, the contact component is arranged on the mounting plate, the filtering component is arranged on a flange outside the housing, the contact component is provided with a first point contact to a fourth point contact, and the filtering component is connected to the first point contact to the fourth point contact through the printed circuit board and a wire. Although this patent can integrate a filtering component on the connector of a cable at the system level in a limited space to achieve a power filtering function. However, this patent has a complex structure and is not suitable for installation on the inner side of the mounting plate. Summary of the Invention

[0004] Aiming at the deficiencies in the above background art, the present invention proposes an internally mounted filtering connector, which solves the problems of complex structure, high cost, and poor reliability of filtering connectors in the prior art.

[0005] The technical solution of the present invention is realized as follows: An internally mounted filtering connector includes a mounting base. One side of the mounting base is a mounting end face. On the other side of the mounting base, there are a filtering circuit board and a packaging shell detachably connected to the mounting base for packaging the filtering circuit board. The mounting base is also provided with conductive terminals and bushings that cooperate with the filtering circuit board. The conductive terminals extend out of the packaging shell, and the packaging shell is provided with magnetic rings corresponding to the conductive terminals. The installation method is to insert from the inside to the outside, and it is no longer restricted by the external space of the box installation panel.

[0006] Further preferably, the mounting base includes a first outer casing. A groove for cooperating with the filter circuit board is provided on one side of the first outer casing. A connecting portion is provided on the other side of the first outer casing. A sealing groove for cooperating with the conductive terminal is provided on the inner wall of the connecting portion. The bushings are symmetrically arranged on the first outer casing and are located on both sides of the connecting portion.

[0007] Further preferably, a ring groove is provided on one side of the first outer casing near the connecting portion, and a sealing ring is provided in the ring groove.

[0008] Further preferably, a washer for cooperating with the bushing is provided in the sealing ring, and the sealing ring and the washer are connected into an integral structure through a connecting strip. Through the sealing ring groove of the conductive terminal and the bushing, primary sealing is achieved; then, through the sealing ring and terminal potting, secondary sealing is achieved, and the sealing effect is better.

[0009] Further preferably, a buckling groove for cooperating with the encapsulation casing is provided on the side wall of the first outer casing, and a locking protrusion is provided on the bottom of the buckling groove.

[0010] Further preferably, an octagonal hole and a plurality of strip holes for cooperating with the octagonal hole are provided in the middle of the filter circuit board. Mounting holes are provided on both sides of the filter circuit board, and the bushings are welded in the mounting holes. The strip holes are arc-shaped holes.

[0011] Further preferably, the conductive terminal is provided with an octagonal structure for cooperating with the first outer casing and a knurled tooth structure for cooperating with the octagonal hole on the filter circuit board. A plurality of uniformly distributed sealing ring grooves are provided on the octagonal structure. The conductive terminal adopts an octagonal structure, which greatly improves the torque that the connector can withstand.

[0012] Further preferably, the encapsulation casing includes a second outer casing. A clamping plate is provided on one side of the second outer casing. A potting ring groove for cooperating with the magnetic ring is provided on the other side of the second outer casing, and a potting layer for fixing the magnetic ring is provided in the potting ring groove.

[0013] Further preferably, at least two locking plates for fixing the magnetic ring and cooperating with the conductive terminal are provided on the second outer casing. A buckling protrusion is provided on the inner side of the locking plate, and the buckling protrusion is buckled and cooperated with the locking ring groove provided on the conductive terminal.

[0014] Further preferably, the clamping plate is a U-shaped clamping plate, and both ends of the U-shaped clamping plate are connected to the second outer casing and are integrally formed with the second outer casing.

[0015] The beneficial effects of the present invention are: 1. In addition to the functions of a common connector, the present invention also has a filtering function, which can improve the anti-electromagnetic interference ability of the positive electrode. The installation end face of the present invention fits on the mounting plate to form an internal installation form. The filtering circuit board cooperates with the conductive terminal and is encapsulated by the encapsulation housing and the mounting base, and a magnetic ring is provided on the encapsulation housing to form a filtering connector, which has the advantages of fewer components, simple overall structure, simple assembly, detachable, high reliability, and low cost.

[0016] 2. The first housing serves to carry and protect other parts. The first housing is an integrally injection-molded structure. When the first housing is installed on the installation end face, the connecting part extends out of the installation end face, facilitating the use of the connector.

[0017] 3. The sealing ring is installed in the sealing ring groove of the first housing. The sealing between the connector and the mounting panel is achieved through the sealing ring, and a sealing structure is also provided around the bushing of the sealing ring, which can achieve secondary sealing of the bushing.

[0018] 4. The second housing is connected and fixed to the first housing by a snap connection. It is provided with a dispensing groove hole for fixing the magnetic ring. Multiple ribs are provided inside and at the bottom of the groove hole, which can ensure that the inner circle, outer circle, and bottom of the magnetic ring can be adhered to the glue, and the bonding effect is better. A snap protrusion is provided inside the locking plate on the second housing and cooperates with the locking ring groove on the conductive terminal to form an elastic snap structure, which plays an anti-disconnection role and the structure is more reliable.

[0019] 5. The octagonal structure and the sealing ring groove in the conductive terminal are used to increase the stability of the connection between the conductive terminal and the first housing, ensuring the sealing between the conductive terminal and the first housing and also improving the torque-bearing capacity of the connector. The knurled teeth cooperate with the filtering circuit board. The conductive terminal is also provided with knurled teeth. The filtering circuit board is installed and clamped on the knurled teeth by an interference press-fitting method, so that the conductive terminal and the filtering circuit board are connected and conducted as the positive electrode input. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is an exploded view of the present invention; Figure 3 is a side view of the present invention.

[0022] In the figure: 1, sealing ring; 2, connecting strip; 3, washer; 4, bushing; 5, first outer housing; 5-1, annular groove; 6, connecting part; 6-1, sealing groove; 7, buckling groove; 8, locking projection; 9, filter circuit board; 10, octagonal hole; 11, strip-shaped hole; 12, mounting hole; 13, conductive terminal; 14, octagonal structure; 15, sealing annular groove; 16, knurled tooth structure; 17, locking annular groove; 18, second outer housing; 19, buckling plate; 20, dispensing annular groove; 20-1, positioning rib; 21, locking plate; 22, magnetic ring. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figure 1 and Figure 3 shown, in Embodiment 1, an internally installed filter connector includes an installation base. One side of the installation base is an installation end face. On the other side of the installation base, there are a filter circuit board 9 and a packaging housing detachably connected to the installation base for encapsulating the filter circuit board 9. The installation base is also provided with a conductive terminal 13 and a bushing 4 that cooperate with the filter circuit board 9. The conductive terminal 13 extends out of the packaging housing, and a magnetic ring 22 corresponding to the conductive terminal 13 is provided on the packaging housing. The installation end face is attached to the installation board to form an internally installed form. The filter circuit board 9 cooperates with the conductive terminal 13 and is encapsulated by the packaging housing and the installation base, having the advantages of fewer components, simple overall structure, simple assembly, detachable, high reliability, and low cost. By arranging the magnetic ring 22 on the packaging housing to form a filter connector, the structure is simple, the cost is low, and the reliability is good. In addition to the functions of a common connector, it also has a filtering function and can improve the anti-electromagnetic interference ability of the positive electrode.

[0025] Specifically, after the bushing 4 and the conductive terminal 13 are placed in place, the installation base is injection-molded, so that the bushing 4 and the conductive terminal 13 are injection-molded into an integral body. The filter circuit board is installed on the installation base and cooperates with the bushing and the conductive terminal. The stability of the structure is good. Then, the magnetic ring 22 is installed on the packaging housing, and then the packaging housing is installed on the installation base. At this time, the end of the conductive terminal 13 extends out of the packaging housing, and the conductive terminal 13 and the magnetic ring 22 are coaxially arranged.

[0026] As Figure 2 and Figure 3As shown in the figure, in Embodiment 2, an internally installed filter connector, which is different from the technical solution of Embodiment 1 in that the installation base includes a first outer casing 5. On one side of the first outer casing 5, there is a groove for mating with the filter circuit board 9. The groove is a groove reserved during the injection molding process for mating with the filter circuit board 9, and can be hermetically fitted with the filter circuit board 9, with good fixing effect. On the other side of the first outer casing 5, there is a connecting portion 6. The top end face of the conductive terminal 13 is 1 mm higher than the top end face of the connecting portion 6. The inner wall of the connecting portion 6 is provided with a sealing groove 6-1 for mating with the conductive terminal 13. The sealing groove 6-1 can be filled with glue for sealing the first outer casing 5 and the conductive terminal 13 to achieve end sealing, with good sealing performance. Two bushings 4 are symmetrically arranged on the first outer casing 5 and are located on both sides of the connecting portion 6. The bushings 4 extend out of the first outer casing 5 and are connected to the filter circuit board 9. The bushings 4 are used as the negative electrode and are welded to the filter circuit board 9. The first outer casing 5 serves to carry and protect the filter circuit board 9, the bushings 4, and the conductive terminals 13. The first outer casing 5 and the connecting portion are of an integrally injection-molded structure. When the first outer casing 5 is installed on the installation end face, the connecting portion 6 extends out of the installation end face, facilitating the use of the connector.

[0027] Specifically, the bushing 4 is integrally formed with the first outer casing 5 by injection molding. Its structure is similar to a blind hole stud. There is a section of straight knurling and a section of circular flange on its cylinder. A sealing ring groove 15 is formed between the straight knurling and the circular flange. After being integrally injection-molded with the outer casing, it can improve airtightness and also improve the withdrawal force of the bushing 4. And the straight knurling can also play a role in anti-torque, with better reliability. The bushing 4 and the conductive terminal 13 are both installed on the filter circuit board 9, and then the first outer casing 5 is injection-molded. The first outer casing 5 can fix the filter circuit board 9 and the bushing 4 and the conductive terminal 13 installed on the filter circuit board 9. At the same time, the first outer casing 5 also forms a protection for the connection of the filter circuit board 9, the conductive terminal 13, and the bushing 4. The connecting portion 6 on the first outer casing 5 is of an annular structure. On the outer wall of the connecting portion 6, there are several uniformly distributed trapezoidal plate groups. The trapezoidal plate groups are used as reinforcing ribs to strengthen the structural strength of the connecting portion 6.

[0028] In this embodiment, on the side of the first outer casing 5 close to the connecting portion 6, there is a ring groove 5-1. A sealing ring 1 is provided in the ring groove 5-1. A washer 3 for mating with the bushing 4 is provided in the sealing ring 1. The sealing ring 1 is connected to the washer 3 by a connecting strip 2 to form an integral structure. The sealing ring 1 is installed in the ring groove 5-1 on the installation end face of the first outer casing 5. The sealing between the connector and the installation panel is achieved through the sealing ring 1, and the sealing ring 1 also has a sealing structure around the bushing 4, which can achieve secondary sealing of the bushing 4.

[0029] Specifically, the annular groove 5-1 is composed of the first outer housing and two annular plates. The sealing ring 1 is installed in the annular groove 5-1 on the mounting end face of the first outer housing 5. The washer 3 is snap-fitted in the mounting groove at the end of the first outer housing 5 for secondary sealing of the bushing 4. A transition groove for cooperating with the connecting strip 2 is also provided on the first outer housing 5.

[0030] In this embodiment, a buckling groove 7 for cooperating with the encapsulation housing is provided on the side wall of the first outer housing 5, and a locking protrusion 8 is provided on the bottom of the buckling groove 7. The first outer housing 5 plays a role in protection and bearing of other components. Four snap structures are also provided around it, and are connected and fixed to the second outer housing 18 by buckling.

[0031] Specifically, four buckling grooves 7 are provided on the outer wall of the first outer housing 5, and the locking protrusion 8 at the bottom of the buckling groove 7 is of a trapezoidal structure for connecting with the encapsulation housing to increase the connection stability.

[0032] All other structures are the same as those in Embodiment 1.

[0033] As Figures 1 to 3 shown, in Embodiment 3, an internally installed filter connector, which is different from the technical solution of Embodiment 2 in that an octagonal hole 10 and a strip hole 11 for cooperating with the octagonal hole 10 are provided in the middle of the filter circuit board 9, and mounting holes 12 are provided on both sides of the filter circuit board 9. The bushing 4 is welded in the mounting hole 12. Filter devices are provided on the filter circuit board 9, and the filter devices are capacitors to meet the filtering function. The positive pole of the filter circuit board 9 is connected to the conductive terminal 13, and the negative pole is connected to the bushing 4 by means of solder laser welding. Further, the bolt is connected to the metal mounting panel through the hole of the bushing 4 to achieve grounding.

[0034] In this embodiment, an octagonal structure 14 for cooperating with the first outer housing 5 and a knurled tooth structure 16 for cooperating with the octagonal hole 10 on the filter circuit board 9 are provided on the conductive terminal 13, and a plurality of uniformly distributed sealing ring grooves 15 are provided on the octagonal structure 14. The octagonal structure 14 and the sealing ring grooves 15 are used to increase the connection stability between the conductive terminal 13 and the first outer housing, ensure the sealing performance of the connection between the conductive terminal and the first outer housing 5, and at the same time improve the torque resistance of the connector. The knurled tooth structure cooperates with the filter circuit board 9, and a knurled tooth structure is also provided on the conductive terminal 13. The filter circuit board 9 is press-fitted on the knurled tooth structure by interference fit. The strip hole provides the elastic margin of the filter circuit board when the conductive terminal cooperates with the filter circuit board, so that the conductive terminal 13 is connected and conducted with the filter circuit board 9 as the positive pole input.

[0035] Specifically, the conductive terminal 13 is used to transmit current and is the main current transmission carrier. It is integrated with the first housing 5 by injection molding, and is provided with an octagonal structure 14 thereon, which can improve the torque resistance of the connector; the conductive terminal 13 is provided with four sealing ring grooves 15, which can improve the sealing performance after the conductive terminal 13 is injection molded with the housing; the end of the octagonal structure 14 is also provided with a cylindrical shape, forming a circle of dispensing grooves with the first housing 5 to achieve secondary sealing; the conductive terminal 13 is also provided with knurled teeth, and the filter circuit board 9 is installed and clamped on the knurled teeth by interference press fitting, so that the conductive terminal 13 is connected and conducted with the filter circuit board 9 as the positive input.

[0036] In this embodiment, the encapsulation housing includes a second housing 18. One side of the second housing 18 is provided with a buckle plate 19, and the other side of the second housing 18 is provided with a dispensing ring groove 20 that cooperates with the magnetic ring 22. A dispensing layer for fixing the magnetic ring 22 is provided in the dispensing ring groove 20. Positioning ribs 20-1 are provided on the groove wall of the dispensing ring groove 20. The positioning ribs 20-1 are used to isolate the magnetic ring from the second housing 18 to ensure that there is a dispensing layer on both the inner and outer walls of the magnetic ring for cooperating with the second housing 18. The magnetic ring 22 is arranged outside the conductive terminal 13 and plays a role in improving the filtering effect. The magnetic ring 22 is fixed in the dispensing ring groove of the second housing 18 by means of glue bonding.

[0037] In this embodiment, at least two locking plates 21 for fixing the magnetic ring 22 and cooperating with the conductive terminal 13 are provided on the second housing 18. The locking plates 21 are four circumferentially arranged arc-shaped plates. Convex ribs for strengthening the cooperation with the conductive terminal are provided on the inner wall of the locking plates 21. Buckling protrusions are provided on the inner side of the locking plates 21, and the buckling protrusions are buckled and matched with the locking ring groove 17 provided on the conductive terminal 13. The buckling protrusions and the locking plates 21 are combined into an L-shaped plate. When the second housing 18 is buckled and matched with the first housing 5, the locking plates 21 are closely attached to the conductive terminal 13. At this time, the buckling protrusions are clamped in the locking ring groove 17 to prevent the second housing 18 from detaching from the conductive terminal 13, and further ensure the buckling stability of the second housing 18 and the first housing 5.

[0038] In this embodiment, the buckle plate 19 is a U-shaped buckle plate. Both ends of the U-shaped buckle plate are connected to the second housing and are an integrally formed structure with the second housing. The second housing 18 is connected and fixed to the first housing 5 by buckling. The second housing is provided with dispensing groove holes for limiting and fixing the magnetic ring 22. Multiple rib positions are provided inside and at the bottom of the groove holes, which can ensure that the inner wall, outer wall and bottom of the magnetic ring 22 can be adhered with glue, and the bonding effect is better. A buckling protrusion is arranged inside the locking plate on the second housing and cooperates with the locking ring groove on the conductive terminal to form an elastic buckle structure, which plays an anti-detachment role and the structure is more reliable.

[0039] Specifically, in this device, the magnetic ring 22 is installed and fixed on the second outer housing 18 by gluing to form the first magnetic ring 22 - outer housing assembly. The conductive terminal 13, the bushing 4, and the first outer housing 5 are integrally injection - molded to form the second outer housing assembly. The filter circuit board 9 is formed into a PCBA assembly with the outer housing assembly by means of crimping and laser - welding solder. The outer housing and the PCBA assembly are clamped together by snap - connection to form the filter connector. Finally, the sealing ring 1 is installed in the annular groove 5 - 1 of the filter connector. The overall structure of this filter connector is simple, and the assembly is simple and detachable. Moreover, the installation method of this filter connector is to insert and install from the inside out, and it is no longer restricted by the external space of the box installation panel.

[0040] All other structures are the same as those in Embodiment 2.

[0041] As Figures 1 to 3 shown, Embodiment 4, an assembled internal - installation filter connector, is mainly applied to electronic devices that require shielding isolation and filtering. On the basis of having the functions of an ordinary connector, a filter circuit is added inside the connector to enable it to have functions such as filtering, oscillation, and delay, and also has functions such as signal screening, noise filtering, current stabilization, and electromagnetic wave interference suppression; moreover, the installation method of this filter connector is internal installation, which is no longer restricted by the external space, and the installation method is simple. It includes: a conductive terminal 13, a first outer housing 5, a bushing 4, a filter circuit board 9, a magnetic ring 22, a second outer housing 18, and a sealing ring 1.

[0042] The conductive terminal 13 is used to transmit current and is the main current - transmission carrier. It is integrally formed with the first outer housing 5 by injection - molding, and an octagonal structure 14 is provided thereon, which can improve the torque - bearing capacity of the connector; multiple sealing annular grooves 15 are provided on the conductive terminal 13, which can improve the sealing performance after the conductive terminal 13 and the first outer housing are injection - molded; a cylindrical section is also provided at the end of the octagonal structure 14, forming a circle of glue - applying grooves with the first outer housing 5 to achieve secondary sealing; a knurled tooth structure is also provided on the conductive terminal 13, and the filter circuit board 9 is installed and clamped on the knurled tooth structure of the conductive terminal by interference crimping, so that the conductive terminal 13 is connected and conducted with the filter circuit board 9 as the positive - pole input.

[0043] The first outer housing 5 plays a role in protection and the bearing of other components. An annular groove 5 - 1 is provided on the installation surface of the first outer housing 5, and sealing with the installation panel is achieved through the sealing ring 1; in addition, four snap - connection structures are also provided around the first outer housing 5, and it is connected and fixed to the second outer housing 18 by snap - connection.

[0044] The bushing 4 is integrally formed with the first outer housing 5 by injection molding. Its structure is similar to a blind hole stud, with a section of straight knurling and a section of circular flange provided on its cylinder. A sealing ring groove 15 is formed between the straight knurling and the circular flange. After being integrally injection molded with the first outer housing 5, it can improve airtightness and also increase the withdrawal force of the bushing 4. Moreover, the straight knurling can also play a role in anti-torque, with better reliability.

[0045] The filter circuit board 9 is provided with filter components to meet the filtering function. The positive pole of the filter circuit board 9 is connected to the conductive terminal 13, and the negative pole is connected to the bushing 4 by laser soldering. Further, the bolt is connected to the metal mounting panel through the hole of the bushing 4 to achieve grounding.

[0046] The magnetic ring 22 is arranged outside the conductive terminal 13 and plays a role in improving the filtering effect. It is fixed in the dispensing groove hole of the second outer housing 18 by glue bonding.

[0047] The second outer housing 18 is connected and fixed to the first outer housing 5 by snap connection. The second outer housing is provided with a dispensing ring groove for fixing the magnetic ring 22. Multiple rib positions are provided inside and at the bottom of the dispensing ring groove, which can ensure that the inner circle, outer circle, and bottom of the magnetic ring 22 can all be adhered to the glue, with better bonding effect. On the side of the inner top of the second outer housing 18 that cooperates with the conductive terminal, there is also an elastic snap structure, namely a snap projection, which is snapped into the locking ring groove 17 on the conductive terminal 13 to play an anti-disconnection role, making the structure more reliable.

[0048] The sealing ring 1 is installed in the ring groove 5-1 of the first outer housing 5. The sealing between the connector and the mounting panel is achieved through the sealing ring 1, and the sealing ring 1 is also provided with a sealing structure around the bushing 4, which can achieve secondary sealing of the bushing 4.

[0049] The magnetic ring 22 is installed and fixed on the second outer housing 18 by glue bonding to form the magnetic ring 22 outer housing component one. The conductive terminal 13, the bushing 4, and the first outer housing 5 are integrally injection molded to form the outer housing component two. The filter circuit board 9 is formed into a PCBA component with the outer housing component two by crimping and laser soldering. The outer housing component one and the PCBA component are assembled together by snap connection to form a filter connector. Finally, the sealing ring 1 is installed in the ring groove of the filter connector. The overall structure of this device is simple, and the assembly is simple and detachable. Moreover, the installation method of this filter connector is to insert and install from the inside out, no longer restricted by the external space of the box body mounting panel.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An internally installed filter connector, characterized in that: It includes an installation base. One side of the installation base is an installation end face. On the other side of the installation base, there is a filter circuit board (9) and a packaging shell detachably connected to the installation base for encapsulating the filter circuit board (9). The installation base is also provided with a conductive terminal (13) and a bushing (4) that cooperate with the filter circuit board (9). The conductive terminal (13) extends out of the packaging shell, and a magnetic ring (22) corresponding to the conductive terminal (13) is provided on the packaging shell.

2. The internal mounting filter connector according to claim 1, characterized in that: The installation base includes a first outer shell (5). On one side of the first outer shell (5), there is a groove that cooperates with the filter circuit board (9). On the other side of the first outer shell (5), there is a connecting part (6). A sealing groove (6-1) that cooperates with the conductive terminal (13) is provided on the inner wall of the connecting part (6). The bushings (4) are symmetrically arranged on the first outer shell (5) and are located on both sides of the connecting part (6).

3. The internal-mounted filter connector according to claim 2, wherein: On one side of the first outer shell (5) close to the connecting part (6), there is an annular groove (5-1), and a sealing ring (1) is provided in the annular groove (5-1).

4. The internal mounting filter connector according to claim 3, characterized in that: A washer (3) that cooperates with the bushing (4) is provided in the sealing ring (1). The sealing ring (1) and the washer (3) are connected into an integral structure through a connecting strip (2).

5. The internal-mounted filtering connector according to claim 4, characterized in that: A buckling groove (7) that cooperates with the packaging shell is provided on the side wall of the first outer shell (5), and a locking protrusion (8) is provided on the bottom of the buckling groove (7).

6. The internal installation filter connector according to any one of claims 2 to 5, characterized in that: In the middle of the filter circuit board (9), there are an octagonal hole (10) and several strip-shaped holes (11) that cooperate with the octagonal hole (10). Installation holes (12) are provided on both sides of the filter circuit board (9), and the bushings (4) are matched with the installation holes (12).

7. The internal mounting filter connector according to claim 6, characterized in that: The conductive terminal (13) is provided with an octagonal structure (14) that cooperates with the first outer shell (5) and a knurled tooth structure (16) that cooperates with the octagonal hole (10) on the filter circuit board (9). Several uniformly distributed sealing ring grooves (15) are provided on the octagonal structure (14).

8. The internal mounting filter connector according to claim 7, wherein: The packaging shell includes a second outer shell (18). On one side of the second outer shell (18), there is a buckling plate (19). On the other side of the second outer shell (18), there is a dispensing ring groove (20) that cooperates with the magnetic ring (22), and a dispensing layer for fixing the magnetic ring (22) is provided in the dispensing ring groove (20).

9. The internal-mounted filter connector according to claim 8, wherein: At least two locking plates (21) for fixing the magnetic ring (22) and cooperating with the conductive terminal (13) are provided on the second outer shell (18). A buckling protrusion is provided on the inner side of the locking plate (21), and the buckling protrusion is buckled and matched with a locking ring groove (17) provided on the conductive terminal (13).

10. The internal mounting filter connector according to claim 8 or 9, characterized in that: The buckling plate (19) is a U-shaped buckling plate (19). Both ends of the U-shaped buckling plate (19) are connected to the second outer shell (18) and are of an integrally formed structure with the second outer shell (18).

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