Detachable filter electrical connector

Abstract

The present invention discloses a detachable filter electrical connector, which belongs to the technical field of filter electrical connector production. The connector comprises a first metal shell, a second metal shell, a shell cover, pin contacts, jack contacts, a wire, a plate capacitor, a first insulating mounting plate, a grounding spring, a first insulating pressure plate, a second insulating pressure plate, an insulating wire sealing body, a second insulating mounting plate, and a third insulating pressure plate. A plurality of pin contacts are mounted in the first metal shell and mechanically positioned, and a plurality of jack contacts are mounted in the second metal shell and mechanically positioned. The upper ends of the plurality of pin contacts are respectively plugged and connected to the lower ends of the plurality of jack contacts. The present invention assembles all components together in a mechanically positioned manner, facilitates rapid assembly and disassembly of the product, improves product production efficiency, improves maintenance efficiency, and significantly reduces costs. The grounding spring ensures the filtering effect, avoiding the disadvantages of a long assembly cycle and dependence of assembly quality on operators.

Description

Technical Field

[0001] This invention belongs to the field of filter electrical connector manufacturing technology, specifically relating to a detachable filter electrical connector. Background Technology

[0002] As electromagnetic interference signals in the working environment of instruments and equipment gradually increase, the requirements for the anti-electromagnetic interference performance of instruments and equipment are becoming higher and higher. Filtering electrical connectors with filtering functions are widely used in equipment, and the application environment and scenarios of filtering electrical connectors have become more diversified. Their functions have also evolved from a single filtering function to a multi-functional function, such as surge protection.

[0003] With the increasing demand for filter connectors and their trend towards multi-functionality, the challenges in the development of filter connectors lie in improving production efficiency, shortening production cycles, and quickly and reliably adding other functions based on their filtering performance, all while ensuring their reliability.

[0004] Traditional filter connectors are generally integrally sealed structures, mainly composed of a metal shell, an insulating mounting plate, plate capacitors (also known as ceramic array plate capacitors, plate feedthrough ceramic capacitors, plate filter ceramic capacitors, etc., whose basic structure has multiple capacitor through-holes on a ceramic dielectric plate with an internal electrode paste layer on the hole wall to form the internal electrode through-hole, and a resistive paste layer on the dielectric plate that is grounded), contacts (pins or sockets, generally pins), wires, potting compound, wire seal, and sealing body (both the wire seal and sealing body are insulators). The plate capacitors are connected to the shell using conductive adhesive, the connector interior is filled and cured with potting compound, the insulating mounting plate is bonded to the shell with adhesive, and the contacts are soldered to other components. Some traditional filter connectors connect the connector assembly (including contacts and related components) and the filter assembly (including filter elements and related components) by plugging them together, forming two detachable components. In this type of connector assembly, both the connector assembly and the filter assembly are also solid-sealed structures, and the components cannot be disassembled.

[0005] The aforementioned traditional filter connectors have the following drawbacks:

[0006] 1) The product is completely encapsulated with potting compound, making it impossible to disassemble or repair. This is especially true for the contacts and related components with high failure rates. If a problem occurs, the only solution is to replace the entire filter connector or the connector assembly containing the contact. This results in significant material waste, high product costs, and is not conducive to the strategy of cost reduction and efficiency improvement.

[0007] 2) The plate capacitor is grounded to the metal shell by applying conductive adhesive. Firstly, it is difficult to disassemble. Secondly, the conductive adhesive will age after long-term use at high temperature, the contact resistance will increase, and the filtering effect will be reduced. If it is subjected to vibration and impact after long-term high temperature operation, the adhesive may crack. In severe cases, poor grounding will occur, resulting in loss of filtering function.

[0008] 3) The connection and assembly of various components are achieved by potting, dispensing, and welding. The curing time of the potting and dispensing adhesives is long, resulting in a long product assembly cycle. Most adhesives need to be cured in a high-temperature environment. The high temperature and long curing time can cause the dielectric constant of the ceramic material of the plate capacitor to change after being exposed to high temperature. This can easily lead to a situation where the product capacity changes after the adhesive has been cured at high temperature and is difficult to recover. It is difficult to ensure that the amount of adhesive filling and the uniformity of adhesive coating are completely consistent. The quality of welding depends heavily on the professional skills of the welders. The condition of the product batch and individual products will be inconsistent, which is not conducive to maintaining product quality consistency.

[0009] In addition, traditional filter connectors use potting compound to fix the contacts in place, and the contacts do not have floating properties. When the socket and plug are mated, the mating force is large, which is not conducive to the use of the product.

[0010] In addition, the internal structure of traditional filter connectors is only large enough to hold capacitors and magnetic cores (inductors), which can only perform filtering and shielding functions, but do not have other functions such as surge protection, thus limiting their application. Summary of the Invention

[0011] The purpose of this invention is to provide a detachable filter electrical connector that is easy to assemble and disassemble quickly in order to solve the above-mentioned problems.

[0012] The present invention achieves the above objectives through the following technical solutions:

[0013] A detachable filter electrical connector includes a first metal housing, a second metal housing, a housing cover plate, pin contacts, socket contacts, wires, a plate capacitor, and a first insulating mounting plate. It also includes a grounding spring, a first insulating pressure plate, a second insulating pressure plate, an insulating seal, a second insulating mounting plate, and a third insulating pressure plate. With the axial direction of the cylindrical first metal housing as the vertical axis, the lower end of the second metal housing is connected to the upper end of the first metal housing. The housing cover plate is mounted on the upper end of the second metal housing. The first insulating mounting plate, the plate capacitor, the first insulating pressure plate, and the second insulating pressure plate are arranged in a vertical configuration from the lower end. The components are sequentially installed inside the first metal housing and cannot move vertically. The insulating sealing body is installed inside the first metal housing and located above the second insulating pressure plate. The middle part of the pin contact has a pin protrusion ring protruding outward in the circumferential direction. The first insulating pressure plate has multiple first pressure plate through holes, and the second insulating pressure plate has multiple second pressure plate through holes. The diameter of the first pressure plate through holes is larger than the diameter of the second pressure plate through holes. The upper ends of the multiple pin contacts pass through multiple corresponding through holes on the first insulating mounting plate, multiple internal electrode through holes on the plate capacitor, and the first insulating plate from bottom to top. Multiple first pressure plate through holes on the pressure plate, multiple second pressure plate through holes on the second insulating pressure plate, and multiple corresponding through holes on the insulating sealing body; multiple pin protrusions are respectively located in multiple first pressure plate through holes, and their upper edges are pressed by the second insulating pressure plate; the grounding spring is installed between the outer circumferential wall of the plate capacitor and the inner circumferential wall of the first metal shell and is in close contact; the second insulating mounting plate and the third insulating pressure plate are installed sequentially from bottom to top in the second metal shell and cannot move vertically; the middle of the socket contact has a socket protrusion protruding in the outer circumferential direction; the first... The three insulating pressure plates have multiple third pressure plate through holes, and the lower diameter of each third pressure plate through hole is enlarged to form a pressure plate groove. Multiple insertion contact elements pass through multiple corresponding through holes on the second insulating mounting plate and multiple third pressure plate through holes of the third insulating pressure plate. Multiple insertion protrusions are placed within multiple pressure plate grooves. The upper ends of multiple pin contacts are inserted into and connected to the lower ends of multiple insertion contact elements. The upper ends of multiple insertion contact elements are connected to the inner ends of multiple wires. The outer ends of multiple wires pass through corresponding through holes on the housing cover and are positioned above the housing cover. Both ends of the aforementioned pin contacts are preferably pins, and both ends of the aforementioned insertion contact elements are preferably insertion holes.

[0014] Preferably, to better achieve the function of preventing the first insulating mounting plate, the first insulating pressure plate, and the second insulating pressure plate from moving vertically while facilitating assembly and disassembly, the upper part of the first insulating mounting plate protrudes outward to form a first convex ring. A first annular step is provided on the inner circumference of the first metal shell at a position corresponding to the first convex ring, with the first convex ring located above the first annular step. The upper part of the first insulating pressure plate protrudes outward to form a second convex ring. A second annular step is provided on the inner circumference of the first metal shell at a position corresponding to the second convex ring, with the second convex ring located above the second annular step. The lower part of the second insulating pressure plate protrudes outward to form a third convex ring. A retaining ring is installed inside the first metal shell and located above the third convex ring. The upper part of the second insulating mounting plate protrudes outward to form a fourth convex ring. A third annular step is provided on the inner circumference of the second metal shell at a position corresponding to the fourth convex ring, with the fourth convex ring located above the third annular step.

[0015] Preferably, to better achieve the function of preventing the second insulating mounting plate and the third insulating pressure plate from moving vertically while facilitating assembly and disassembly, and to achieve more electrical functions such as surge protection, the upper outer periphery of the housing cover plate protrudes outward to form a cover plate convex ring. The cover plate convex ring is positioned above the upper end of the second metal housing. The housing cover plate extends downward near its edge, with its lower end positioned above the third insulating pressure plate. A printed circuit board is provided above the third insulating pressure plate. Surge protection diodes and other electrical components can be installed on the printed circuit board as needed. Multiple socket contacts pass through corresponding through holes on the printed circuit board and are electrically connected to each other. A printed line is provided on the upper edge of the printed circuit board, and a conductive rubber ring is installed on it. The upper part of the conductive rubber ring is located below the lower end of the housing cover plate and is in close contact with it. Multiple transverse connecting screws pass through multiple through holes on the second metal housing and are connected to multiple screw holes on the housing cover plate.

[0016] Preferably, in order to enable the socket contact to float during use, an annular elastic piece is provided on the socket contact above the corresponding through hole on the printed circuit board. Gaps are left between the socket contact and the walls of the multiple corresponding through holes on the second insulating mounting plate, between the socket contact and the walls of the multiple through holes of the third pressure plate, and between the socket contact and the bottom of the multiple pressure plate grooves.

[0017] Preferably, in order to achieve a non-welded connection structure between the pin contact and the plate capacitor, the pin contact and the wall of the corresponding inner electrode through hole of the plate capacitor are electrically connected by an annular claw spring.

[0018] Preferably, to enable the pin contact to float during use, thereby reducing the mutual force when the pin contact and the socket contact are engaged and facilitating product application, the outer diameter of a section of the pin contact corresponding to the pin protrusion ring is increased to form a large-diameter section of the pin. The pin protrusion ring is located at the lower part of the large-diameter section of the pin, and the outer diameter of the pin protrusion ring is larger than the outer diameter of the large-diameter section of the pin. The large-diameter section of the pin is located in both the first pressure plate through hole and the second pressure plate through hole. A ring-shaped retaining spring is provided between the lower outer wall of the large-diameter section of the pin and the hole wall of the first pressure plate through hole, and the upper part of the retaining spring is pressed by the second insulating pressure plate.

[0019] Preferably, in order to better protect the plate capacitor and achieve better insulation, an upper insulating pad is provided between the top of the plate capacitor and the first insulating pressure plate, and the pin contact passes through the corresponding through hole on the upper insulating pad; a lower insulating pad is provided between the bottom of the plate capacitor and the first insulating mounting plate, and the pin contact passes through the corresponding through hole on the lower insulating pad; an insulating seal is provided below the first insulating mounting plate, and the pin contact passes through the corresponding through hole on the insulating seal.

[0020] Preferably, for ease of assembly and application, the upper outer wall of the first metal housing is provided with a protruding first housing flange, the lower outer wall of the second metal housing is provided with a protruding second housing flange, the lower inner wall of the second housing flange is provided with an annular groove, the first housing flange is placed in the annular groove, and multiple vertical locking screws pass through multiple through holes on the first housing flange from bottom to top and are connected to multiple screw holes on the bottom of the annular groove.

[0021] Preferably, in order to facilitate application and ensure that the grounding spring and the plate capacitor are not misaligned, the grounding spring is formed by bending a strip spring into a circular spring, and the lower or upper side of the grounding spring is provided with a limiting flange that protrudes inward.

[0022] The beneficial effects of this invention are as follows:

[0023] This invention mechanically positions the pin contacts and plate capacitor within a first metal housing using a first insulating mounting plate, a first insulating pressure plate, and a second insulating pressure plate. A grounding spring is installed between the plate capacitor and the inner wall of the first metal housing to achieve conductive grounding. The socket contacts are mechanically positioned within a second metal housing using a second insulating mounting plate, a third insulating pressure plate, and a housing cover. This allows all components to be assembled together mechanically, eliminating the need for potting compound, adhesives, or welding. This facilitates rapid assembly and disassembly, improves production efficiency, and allows for product repair by replacing individual components, thus increasing repair efficiency and significantly reducing costs. The excellent elasticity of the grounding spring ensures long-term conductive grounding of the plate capacitor, guaranteeing filtering performance. This avoids the drawbacks of adhesives and welding, such as long assembly cycles, high welding temperatures, damage to electrical components, and assembly quality dependent on operator skill and experience. Attached Figure Description

[0024] Figure 1 This is a perspective view of the fully assembled detachable filter electrical connector described in this invention;

[0025] Figure 2 This is a perspective view of the detachable filter connector of the present invention after partial assembly;

[0026] Figure 3 This is an exploded perspective view of the first metal housing and its internal components of the detachable filter electrical connector described in this invention before assembly.

[0027] Figure 4 This is a perspective view of the grounding spring of the detachable filter electrical connector described in this invention;

[0028] Figure 5 This is an exploded perspective view of the second metal housing and its internal components of the detachable filter electrical connector described in this invention before assembly;

[0029] Figure 6 This is a front sectional view of the fully assembled detachable filter electrical connector described in this invention. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figures 1-6As shown, the detachable filter connector of the present invention includes a first metal housing 7, a second metal housing 5, a housing cover plate 3, pin contacts 8, socket contacts 35, wires 1, a plate capacitor 25, a first insulating mounting plate 28, a grounding spring 23, a first insulating pressure plate 19, a second insulating pressure plate 13, an insulating sealing body 9, a second insulating mounting plate 39, and a third insulating pressure plate 34. With the axial direction of the cylindrical first metal housing 7 as the vertical direction, the lower end of the second metal housing 5 is connected to the upper end of the first metal housing 7, and the housing cover plate 3 is installed on the upper end of the second metal housing 5. The first insulating mounting plate 28, plate capacitor 25, first insulating pressure plate 19, and second insulating pressure plate 19 are also present. 3. The components are installed sequentially from bottom to top inside the first metal housing 7 and cannot move vertically. The insulating sealing body 9 (a conventional insulator) is installed inside the first metal housing 7 and located above the second insulating pressure plate 13. The middle part of the pin contact 8 has a pin protrusion ring 21 that protrudes outward in the circumferential direction. The first insulating pressure plate 19 has multiple first pressure plate through holes 18, and the second insulating pressure plate 13 has multiple second pressure plate through holes 14. The diameter of the first pressure plate through holes 18 is larger than the diameter of the second pressure plate through holes 14. The upper ends of the multiple pin contacts 8 pass through multiple corresponding through holes (not marked in the figure) on the first insulating mounting plate 28 and multiple internal electrode through holes (Figure 14) on the plate capacitor 25 from bottom to top. The figure shows multiple first pressure plate through holes 18 on the first insulating pressure plate 19, multiple second pressure plate through holes 14 on the second insulating pressure plate 13, and multiple corresponding through holes on the insulating sealing body 9 (not marked in the figure). Multiple pin protrusions 21 are located in multiple first pressure plate through holes 18, and their upper edges are pressed by the second insulating pressure plate 13. The grounding spring 23 is installed between the outer circumferential wall of the plate capacitor 25 and the inner circumferential wall of the first metal shell 7 and is in close contact. The second insulating mounting plate 39 and the third insulating pressure plate 34 are installed in the second metal shell 5 from bottom to top and cannot be moved vertically. The middle part of the socket contact 35 is provided with a socket protrusion 3 protruding in the outer circumferential direction. 7. The third insulating pressure plate 34 is provided with multiple third pressure plate through holes 33, and the lower diameter of each third pressure plate through hole 33 is increased to form a pressure plate groove (not marked in the figure). Multiple insertion contact members 35 pass through multiple corresponding through holes (not marked in the figure) on the second insulating mounting plate 39 and multiple third pressure plate through holes 33 on the third insulating pressure plate 34. Multiple insertion protrusion rings 37 are placed in multiple pressure plate grooves. The upper ends of multiple pin contacts 8 are inserted and connected to the lower ends of multiple insertion contacts 35. The upper ends of multiple insertion contacts 35 are connected to the inner ends of multiple wires 1. The outer ends of multiple wires 1 pass through the corresponding through holes on the housing cover plate 3 and are placed above the housing cover plate 3.

[0032] like Figures 1-6 As shown, the present invention also discloses the following more optimized specific structures:

[0033] To better ensure the first insulating mounting plate 28, the first insulating pressure plate 19, and the second insulating pressure plate 13 cannot move vertically while facilitating assembly and disassembly, the upper part of the first insulating mounting plate 28 protrudes outward to form a first convex ring 27. A first annular step (not marked in the figure) is provided on the inner circumference of the first metal housing 7 at a position corresponding to the first convex ring 27. The first convex ring 27 is located above the first annular step. The upper part of the first insulating pressure plate 19 protrudes outward to form a second convex ring 17. A first annular step (not marked in the figure) is provided on the inner circumference of the first metal housing 7 at a position corresponding to the second convex ring 27. A second annular step (not marked in the figure) is provided at the position corresponding to 17. The second convex ring 17 is located on the second annular step. The lower part of the second insulating pressure plate 13 protrudes outward to form a third convex ring 15. The retaining ring 12 is installed in the first metal housing 7 and is located on the third convex ring 15. The upper part of the second insulating mounting plate 39 protrudes outward to form a fourth convex ring 38. A third annular step (not marked in the figure) is provided on the inner circumference of the second metal housing 5 at the position corresponding to the fourth convex ring 38. The fourth convex ring 38 is located on the third annular step.

[0034] To better ensure the second insulating mounting plate 39 and the third insulating pressure plate 34 cannot move vertically while facilitating assembly and disassembly, and to achieve additional electrical functions such as surge protection, the upper outer periphery of the housing cover plate 3 protrudes outward to form a cover plate protrusion 30. The cover plate protrusion 30 is positioned above the upper end of the second metal housing 5. The housing cover plate 3 extends downward near its edge, with its lower end positioned above the third insulating pressure plate 34. A printed circuit board 32 is provided above the third insulating pressure plate 34. Surge protection diodes and other electrical components, as well as multiple socket contacts 35, can be installed on the printed circuit board 32 as needed. The conductive rubber rings 31 are installed on the upper part of the printed circuit board 32 near the edge. The conductive rubber rings 31 are used to connect one end of the electrical components on the printed circuit board 32, such as surge protection diodes, to the housing cover plate 3 and the second metal shell 5 to achieve grounding. The upper part of the conductive rubber rings 31 is located below the lower end of the housing cover plate 3 and in close contact. The multiple horizontal connecting screws 4 pass through the multiple through holes (not marked in the figure) on the second metal shell 5 and are connected to the multiple screw holes (not marked in the figure) on the housing cover plate 3.

[0035] In order to enable the socket contact 35 to float during use, an annular elastic piece 36 is provided on the socket contact 35 above the corresponding through hole on the printed circuit board 32. Gaps are left between the socket contact 35 and the walls of the multiple corresponding through holes on the second insulating mounting plate 39, between the socket contact 35 and the walls of the multiple third pressure plate through holes 33, and between the socket contact 35 and the bottom of the multiple pressure plate grooves.

[0036] To achieve a non-welded connection between the pin contact 8 and the plate capacitor 25, the pin contact 8 and the corresponding inner electrode through hole of the plate capacitor 25 are electrically connected by an annular claw spring 24.

[0037] To enable the pin contact 8 to float during use, thereby reducing the mutual force when the pin contact 8 and the socket contact 35 are engaged and facilitating product application, the outer diameter of a section of the pin contact 8 corresponding to the pin protrusion ring 21 is increased to form the pin large diameter section 20. The pin protrusion ring 21 is located at the lower part of the pin large diameter section 20, and the outer diameter of the pin protrusion ring 21 is larger than the outer diameter of the pin large diameter section 20. The pin large diameter section 20 is located in both the first pressure plate through hole 18 and the second pressure plate through hole 14. A ring-shaped retaining spring 16 is provided between the lower outer wall of the pin large diameter section 20 and the hole wall of the first pressure plate through hole 18, and the upper part of the retaining spring 16 is pressed by the second insulating pressure plate 13.

[0038] To better protect the plate capacitor 25 and achieve better insulation, an upper insulating pad 22 is provided between the top of the plate capacitor 25 and the first insulating pressure plate 19, and the pin contact 8 passes through the corresponding through hole on the upper insulating pad 22. A lower insulating pad 26 is provided between the bottom of the plate capacitor 25 and the first insulating mounting plate 28, and the pin contact 8 passes through the corresponding through hole on the lower insulating pad 26. An insulating sealing body 29 (a conventional insulator) is provided below the first insulating mounting plate 28, and the pin contact 8 passes through the corresponding through hole on the insulating sealing body 29.

[0039] For ease of assembly and application, the upper outer wall of the first metal housing 7 is provided with a protruding first housing flange 10, and the lower outer wall of the second metal housing 5 is provided with a protruding second housing flange 6. The lower inner wall of the second housing flange 6 is provided with an annular groove (not marked in the figure). The first housing flange 10 is placed in the annular groove. Multiple vertical locking screws (not visible in the figure) pass through multiple through holes 11 on the first housing flange 20 from bottom to top and are connected to multiple screw holes (not visible in the figure) on the bottom of the annular groove.

[0040] To facilitate application and ensure that the grounding spring 23 and the plate capacitor 25 are not misaligned, the grounding spring 23 is formed by bending a strip spring into a circular spring, and the lower (or upper) side of the grounding spring 23 is provided with a limiting flange 231 that protrudes inward.

[0041] Figure 1 , Figure 2 , Figure 5 and Figure 6 The image also shows an insulator 2, which is a conventional structure, installed on the housing cover plate 3 and used to insulate the conductor 1 from the housing cover plate 3.

[0042] like Figures 1-6As shown, in application, multiple pin contacts 8 are connected to the power supply or signal source that needs filtering, and the outer ends of multiple wires 1 are connected to electrical equipment (not shown in the figure). The multiple pin contacts 8 are first filtered by the plate capacitor 25 to remove interfering electromagnetic waves, and then provide relevant electrical signals to the electrical equipment through the multiple wires 1. When separation is required, the locking screws are removed to separate the first metal housing 7 and the second metal housing 5, thereby separating the multiple pin contacts 8 from the multiple socket contacts 35, thus realizing the separation function of signal transmission. If some components are damaged and need to be replaced or repaired, such as the plate capacitor 25 or the pin contacts 8, the insulation is removed first. Remove the sealing wire body 9 and retaining ring 12, then remove the second insulating pressure plate 13, the first insulating pressure plate 19 (removing multiple pin contacts 8 simultaneously, and also removing the upper insulating pad 22 and plate capacitor 25), the upper insulating pad 22, the plate capacitor 25, the lower insulating pad 26, and the first insulating mounting plate 28 in sequence. Then, insert a pin extractor into the interior of each retaining ring 16, open the claw, and the corresponding pin contact 8 can be removed. The claw spring 24 has elastic contact with the corresponding pin contact 8, allowing the pin contact 8 to be directly removed from the plate capacitor 25. This achieves quick disassembly of the related components. After repair or replacement, reassemble in reverse order. The disassembly and assembly of the socket contact 35, printed circuit board 32, and related components are similar and will not be described again.

[0043] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the technical solutions of the present invention. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of the patent of the present invention.

Claims

1. A detachable filter electrical connector, comprising a first metal housing, a second metal housing, a housing cover plate, pin contacts, socket contacts, wires, a plate capacitor, and a first insulating mounting plate, characterized in that: It also includes a grounding spring, a first insulating pressure plate, a second insulating pressure plate, an insulating sealing wire, a second insulating mounting plate, and a third insulating pressure plate. With the axis of the cylindrical first metal shell as the vertical direction, the lower end of the second metal shell is connected to the upper end of the first metal shell. The shell cover is installed on the upper end of the second metal shell. The first insulating mounting plate, the plate capacitor, the first insulating pressure plate, and the second insulating pressure plate are installed sequentially from bottom to top inside the first metal shell and cannot move vertically. The insulating sealing wire is installed inside the first metal shell and located at... Above the second insulating pressure plate, the middle of the pin contact has a pin protrusion ring that protrudes outward in the circumferential direction. The first insulating pressure plate has multiple first pressure plate through holes, and the second insulating pressure plate has multiple second pressure plate through holes. The diameter of the first pressure plate through holes is larger than the diameter of the second pressure plate through holes. The upper ends of the multiple pin contacts pass through multiple corresponding through holes on the first insulating mounting plate, multiple internal electrode through holes on the plate capacitor, multiple first pressure plate through holes on the first insulating pressure plate, and multiple second pressure plate through holes on the second insulating pressure plate, respectively, from bottom to top. The insulating sealing body has multiple corresponding through holes, and multiple pin protrusions are respectively located in multiple first pressure plate through holes, with their upper edges pressed by the second insulating pressure plate. The grounding spring is installed between the outer circumferential wall of the plate capacitor and the inner circumferential wall of the first metal shell and is in close contact. The second insulating mounting plate and the third insulating pressure plate are installed sequentially from bottom to top in the second metal shell and cannot move vertically. The middle part of the socket contact has a socket protrusion protruding in the outer circumferential direction. The third insulating pressure plate has multiple third pressure plate through holes and The lower diameter of each of the third pressure plate through holes is increased to form a pressure plate groove. Multiple insertion hole contacts pass through multiple corresponding through holes on the second insulating mounting plate and multiple third pressure plate through holes of the third insulating pressure plate. Multiple insertion hole protrusions are placed in multiple pressure plate grooves. The upper ends of multiple pin contacts are inserted and connected to the lower ends of multiple insertion hole contacts. The upper ends of multiple insertion hole contacts are connected to the inner ends of multiple wires. The outer ends of multiple wires pass through corresponding through holes on the housing cover and are placed above the housing cover.

2. The detachable filter connector according to claim 1, characterized in that: The upper part of the first insulating mounting plate protrudes outward to form a first convex ring. A first annular step is provided on the inner circumference of the first metal shell at a position corresponding to the first convex ring, and the first convex ring is located above the first annular step. The upper part of the first insulating pressure plate protrudes outward to form a second convex ring. A second annular step is provided on the inner circumference of the first metal shell at a position corresponding to the second convex ring, and the second convex ring is located above the second annular step. The lower part of the second insulating pressure plate protrudes outward to form a third convex ring. A retaining ring is installed inside the first metal shell and is located above the third convex ring. The upper part of the second insulating mounting plate protrudes outward to form a fourth convex ring. A third annular step is provided on the inner circumference of the second metal shell at a position corresponding to the fourth convex ring, and the fourth convex ring is located above the third annular step.

3. The detachable filter connector according to claim 2, characterized in that: The upper outer periphery of the housing cover plate protrudes outward to form a cover plate protrusion ring, which is positioned above the upper end of the second metal housing. The housing cover plate extends downward near its edge, with its lower end positioned above the third insulating pressure plate. A printed circuit board is provided above the third insulating pressure plate. Multiple insertion contact elements pass through corresponding through holes on the printed circuit board and are electrically connected to each other. Printed lines are provided on the upper surface of the printed circuit board near its edge, and a conductive rubber ring is installed on it. The upper surface of the conductive rubber ring is positioned below the lower end of the housing cover plate and is in close contact with it. Multiple transverse connecting screws pass through multiple through holes on the second metal housing and are connected to multiple screw holes on the housing cover plate.

4. The detachable filter electrical connector according to claim 3, characterized in that: The socket contact is provided with an annular elastic piece above the corresponding through hole on the printed circuit board. Gaps are left between the socket contact and the walls of the corresponding through holes on the second insulating mounting plate, between the socket contact and the walls of the through holes of the third pressure plate, and between the socket contact and the bottom of the grooves of the pressure plate.

5. The detachable filter electrical connector according to any one of claims 1-4, characterized in that: The pin contact is electrically connected to the wall of the corresponding internal electrode through hole of the plate capacitor via an annular claw spring.

6. The detachable filter electrical connector according to any one of claims 1-4, characterized in that: The outer diameter of the section of the pin contact corresponding to the pin protrusion ring increases to form the pin large diameter section. The pin protrusion ring is located at the lower part of the pin large diameter section. The outer diameter of the pin protrusion ring is larger than the outer diameter of the pin large diameter section. The pin large diameter section is located in both the first pressure plate through hole and the second pressure plate through hole. A ring-shaped retaining spring is provided between the lower outer wall of the pin large diameter section and the hole wall of the first pressure plate through hole, and the upper part of the retaining spring is pressed by the second insulating pressure plate.

7. The detachable filter electrical connector according to any one of claims 1-4, characterized in that: An upper insulating pad is provided between the top of the plate capacitor and the first insulating pressure plate, and the pin contact passes through the corresponding through hole on the upper insulating pad. A lower insulating pad is provided between the bottom of the plate capacitor and the first insulating mounting plate, and the pin contact passes through the corresponding through hole on the lower insulating pad. An insulating seal is provided below the first insulating mounting plate, and the pin contact passes through the corresponding through hole on the insulating seal.

8. The detachable filter electrical connector according to any one of claims 1-4, characterized in that: The upper outer wall of the first metal housing is provided with a protruding first housing flange, and the lower outer wall of the second metal housing is provided with a protruding second housing flange. The lower inner wall of the second housing flange is provided with an annular groove. The first housing flange is placed in the annular groove. Multiple vertical locking screws pass through multiple through holes on the first housing flange from bottom to top and are connected to multiple screw holes on the bottom of the annular groove.

9. The detachable filter electrical connector according to any one of claims 1-4, characterized in that: The grounding spring is formed by bending a strip spring into a circular spring, and the lower or upper side of the grounding spring is provided with a limiting flange that protrudes inward.

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