Through-wall sealing filtering connector

Abstract

The utility model relates to a through-wall sealing filtering connector, which comprises a shell and a contact element fixed in the shell in a sealing manner, at least two plate-type capacitors distributed at intervals along the axial direction are also arranged in the shell, and each plate-type capacitor is provided with a through hole for the contact element to pass through. The contact piece is in contact conduction with a corresponding hole site on the adaptive plate-type capacitor through an elastic sheet fixed in the through hole; each plate-type capacitor is in contact conduction with the shell, and the shell is in contact conduction with the mounting panel through a conductive rubber pad arranged at the flange plate of the shell. According to the through-wall sealing connector provided by the utility model, through a mode of arranging the double-layer or multi-layer plate-type capacitor in the through-wall sealing connector, arbitrary setting of EM I parameters at a connector interface is realized, electromagnetic interference is inhibited, and the problem of electromagnetic interference at an equipment compartment connector is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a wall-penetrating sealed filtering connector. Background Art

[0002] In the vehicle-mounted radar system, a through-wall sealed connector is required. The existing through-wall sealed connector only has communication function and air-sealing function, and electromagnetic interference problems often occur at the connector interface, affecting the electromagnetic compatibility of the equipment. Therefore, there is an urgent need for a connector that not only has the function of a through-wall sealed connector, but also has a filtering network set up inside to realize the EMI filtering function at the connector and solve the electromagnetic interference problem at the connector interface. Summary of the invention

[0003] In order to solve the above problems, the utility model provides a wall-penetrating sealing filter connector with a new structure, which can realize the wall-penetrating sealing function and has the EMI filtering function.

[0004] The purpose of the utility model and the technical problem to be solved are achieved by adopting the following technical solutions. According to a through-wall sealed filter connector proposed by the utility model, it includes a housing 1 and a contact 2 fixedly assembled in the housing 1, and at least two plate capacitors 4 spaced apart along the axial direction are also arranged in the housing 1, each plate capacitor 4 has a through hole 41 for the contact 2 to pass through, and the contact 2 is in contact and conduction with the corresponding hole position on the adapter plate capacitor 4 through the spring fixed in the through hole 41; each plate capacitor is in contact and conduction with the housing 1, and the housing 1 is in contact and conduction with the installation panel through the conductive rubber pad arranged at its flange.

[0005] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0006] In the aforementioned through-wall sealed filter connector, an insulating pad 7 is further provided in the housing 1, and the insulating pad 7 is circumferentially anti-rotatably matched with the housing 1, and the hole position positioning of the contact piece in the housing 1 is achieved through the holes distributed on the insulating pad 7 for the contact piece to pass through.

[0007] In the aforementioned through-the-wall sealed filter connector, the contact member 1 is sintered and fixed in the housing 1 by means of a glass cake 3 , and the plate capacitor 4 is located behind the glass cake 3 .

[0008] The aforementioned through-wall sealed filter connector has at least two insulating pads 7, one of which has a front end face that cooperates with the stepped surface in the shell 1 and a rear end that faces the axial stopper of the plate capacitor 4 at the front end, and the other insulating pads are pressed between the plate capacitors 4.

[0009] The aforementioned through-wall sealed filter connector also has a potting glue 8 in the shell 1, which seals and fixes the plate capacitor, shell 1 and contact 2 at the rear end as a whole, and presses the front end face of the insulating pad 7 at the front end against the stepped surface in the shell 1.

[0010] In the aforementioned through-wall sealed filter connector, the front and rear ends of the housing 1 form a socket cavity for mating with a plug, and both ends of the contact member 2 extend into the corresponding socket cavity.

[0011] In the aforementioned through-wall sealed filter connector, a rubber ring 10 is fixedly installed in each socket cavity, and the rubber ring 10 cooperates with an interface seal 9 fixed at the end face of the glass cake 3 or the potting glue 8 to achieve end face sealing when the end socket is plugged into the adapter plug.

[0012] In the aforementioned through-wall sealed filter connector, the interface sealing body 9 has an escape hole 91 for the contact 2 to pass through, and a cantilever structure 92 is formed around the escape hole 91 for cooperating with the outer periphery of the contact 2 for sealing.

[0013] In the aforementioned through-wall sealed filter connector, the spring piece 5 includes a fixing portion 51 which is fixedly matched with an end surface of one side of the plate capacitor 4 and a cantilever 52 which is located in the through hole 41 and extends toward the center of the through hole 41 .

[0014] In the aforementioned through-wall sealed filter connector, the plate capacitor 4 is connected to the housing 1 via the grounding spring 6 .

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the above technical solution, the utility model can achieve considerable technical progress and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0016] The connector of the utility model has a built-in plate capacitor to realize the EMI filtering function; the double-layer plate capacitor structure can realize any required combination of EMI filtering functions; the plate capacitor is in flexible contact with the contact piece and the shell to avoid stress; the insulating pad has hole positioning and self-calibration functions.

[0017] The glass cake of the connector, the contact piece and the housing of the utility model are melted and solidified at high temperature, and the three are fixed into a whole, which can withstand the pressure difference between the left and right ends and realize the air sealing function. In this way, the through-wall sealing filter connector realizes both the through-wall sealing function and the EMI filtering function.

[0018] The connector of the utility model is a compartment connector, both ends of which are sockets that can be plugged into an adapter plug; by means of a built-in double-layer plate capacitor in the through-wall sealed connector, the EMI parameters at the connector interface can be arbitrarily set, electromagnetic interference is suppressed, and the electromagnetic interference problem at the equipment compartment connector is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the wall-penetrating sealed filter connector of the utility model;

[0020] Figure 2 for Figure 1 A partial enlarged view of

[0021] Figure 3 The utility model is a schematic diagram of the insulating pad structure of the through-wall sealing filter connector.

[0022]

Main component symbol description

[0023] 1: Shell

[0024] 11: Ground spring slot

[0025] 12: Flange

[0026] 13: Conductive rubber pad

[0027] 2: Contact

[0028] 3: Glass Cake

[0029] 4: Plate capacitor

[0030] 41: Through hole

[0031] 5: Shrapnel

[0032] 51: Fixed part

[0033] 52: Cantilever

[0034] 6: Grounding spring

[0035] 7: Insulation pad

[0036] 71: Positioning slot

[0037] 8: Potting glue

[0038] 9: Interface sealing body

[0039] 91: Avoidance hole

[0040] 92: Cantilever structure

[0041] 10: Rubber ring DETAILED DESCRIPTION

[0042] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the through-wall sealed filter connector proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0043] See also Figure 1-3 , which is a schematic diagram of the structure of each part of the through-wall sealed filter connector of the utility model, the through-wall sealed filter connector comprises a housing 1, the housing 1 has a cavity extending in the axial direction, the two ends of the cavity are open, and the contact 2 is sintered and fixed in the cavity at the front end of the housing 1 by a glass cake 3. That is, the contact 2, the glass cake 3 and the housing 1 are sintered into a whole by high temperature, so that the contact 2 is fixed at the corresponding position inside the housing 1, and the sealing structure formed between the glass cake 3 after high temperature melting and solidification and the housing 1 and the contact 2 realizes the airtight function inside and outside the compartment.

[0044] A plate capacitor 4 is also fixedly mounted in the cavity in the middle of the housing 1. The plate capacitor 4 has a through hole 41 for the contact 2 to pass through, and the plate capacitor 4 realizes elastic contact with the contact 2 through a spring 5 fixed in the through hole 41. In this embodiment, the spring 5 includes a fixed portion 51 fixed to one end face of the plate capacitor 4 and a plurality of cantilevers 52 distributed along the circumference. The cantilevers 52 are all located in the through hole 41 and extend toward the center of the through hole 41. The plate capacitor 4 realizes elastic contact with the contact 2 through the plurality of cantilevers distributed along the circumference in the through hole 41, that is, the conduction is realized through the elastic contact of the plurality of cantilevers 52 distributed along the circumference of the spring 5 with the contact 2 in the circumference. Preferably, the spring 5 is cylindrical as a whole, and its front end is turned outward to form a fixed portion 51, and the rear end is divided by a split groove extending along the axial direction to form a plurality of cantilevers 52, and each cantilever 52 is inclined inward to realize elastic contact with the contact 2.

[0045] The plate capacitor 4 also achieves contact and conduction with the shell 1 through the grounding spring 6. Preferably, a grounding spring slot 11 for installing the grounding spring 6 is provided on the inner wall of the shell 1 cavity. The grounding spring 6 is installed in the grounding spring slot 11 and is axially limited by the grounding spring slot 11 to prevent it from moving.

[0046] In the embodiment of the utility model, there are two plate capacitors 4, which are spaced apart in the middle of the cavity of the shell 1. Each contact piece 2 can be connected to one of the plate capacitors 4 as needed, thereby achieving any combination of EMI parameters of each hole of the connector, meeting the EMI suppression requirements in various environments, and avoiding the inability to meet the parameter setting requirements with a large difference due to the limited EMI parameters of the same plate capacitor. In other embodiments of the utility model, there can be three or more plate capacitors 4, which can be arranged at intervals along the axial direction of the shell 1 according to the needs of use, and each contact piece 2 simultaneously passes through the through hole 41 of each plate capacitor 4, and is connected to the corresponding plate capacitor according to the required EMI parameter selection, meeting a wide range of parameter selection requirements.

[0047] In the embodiment of the utility model, each plate capacitor 4 is provided with an insulating pad 7 at the front end, and the plate capacitor 4 and the insulating pad 7 stopped at the front end form a plate capacitor group. The housing 1 of the utility model is provided with at least two plate capacitor groups distributed axially along the housing 1, and the adjacent plate capacitor groups are axially stopped, that is, the front end face of the insulating pad 7 in the plate capacitor group located at the rear side can realize the axial backward stop limit of the plate capacitor 4 in the plate capacitor group located in the front. And the front end face of the insulating pad 7 in the plate capacitor group located at the front end is axially stopped and limited with the stepped surface in the housing 1. In addition, the insulating pad is also matched with the housing limit in the radial direction to avoid radial movement of the insulating pad. The housing 1 also realizes the axial forward limit of the axially distributed plate capacitor group through the potting glue 8 therein, so that the front end of the above-mentioned plate capacitor group is pressed tightly on the stepped surface in the housing 1. And the potting glue 8 also realizes the overall sealing and fixing of the plate capacitor, the housing 1 and the contact 2.

[0048] Different from the conventional soft rubber pad used in the prior art, the insulating pad in this embodiment is a hard insulating pad, which can perform functions such as straightening, supporting, and position calibration on the slender contact. Specifically, in the embodiment of the utility model, the insulating pad is machined from a polytetrafluoroethylene rod, and the holes distributed thereon for each contact 2 to pass through can realize the hole coordinate positioning of the contact 2, and also has the contact position calibration function to avoid the contact being too long and skewed. In this embodiment, in order to realize the precise positioning of the hole position of the insulating pad 7 in the shell 1 and prevent it from affecting the hole position positioning and calibration function of the contact 2 due to circumferential rotation, at least one positioning groove 71 is provided on the outer peripheral surface of the insulating pad 7, and the positioning groove 71 can cooperate with the corresponding positioning key in the shell 1 to realize the circumferential anti-rotation cooperation between the insulating pad 7 and the shell 1, so as to realize the precise positioning of the insulating pad 7 in the shell 1.

[0049] In the embodiment of the utility model, the front and rear ends of the connector are both socket structures for plugging with the adapter plug, that is, the connector of the utility model is a structure for realizing the transfer of plugs inside and outside the compartment. As a result, the front and rear ends of the shell 1 have cavities for inserting the adapter plug, and both ends of the contact piece 2 are pin structures, so that the jack in the adapter plug can be matched and connected. Specifically, the shell 1 has a stepped hole structure with large ends and small middle. The glass cake 3, plate capacitor group and potting glue 8 are all located in the small diameter section in the middle, and the large diameter sections at both ends are used for plugging with the plug end. The front end of the contact piece 2 extends out of the glass cake 3 and enters the cavity of the front socket, and the rear end extends out of the potting glue 8 and enters the cavity of the rear socket.

[0050] The front end surface of the glass cake 3 on the inner side of the front end of the housing 1 is provided with an interface seal 9 for realizing the connection and sealing between the end socket and the adapter plug; the rear end surface of the potting glue 8 at the rear end of the housing is also provided with an interface seal 9 for realizing the connection and sealing between the end socket and the adapter plug. The interface seal 9 has an avoidance hole 91 for the contact 2 to pass through, and a cantilever structure 92 for cooperating and sealing with the outer periphery of the contact 2 is formed around the avoidance hole 91.

[0051] The socket cavities at the front and rear ends of the housing 1 are both provided with rubber rings 10, and the inner diameter of the rubber rings 10 is in contact and sealed with the outer peripheral surface of the interface sealing body 9, so that the sockets at the front and rear ends of the housing 1 can be sealed with the front end face of the adapter plug through the cooperation of the rubber rings 10 and the interface sealing body 9. In this embodiment, the outer ring of the rubber ring 10 extends axially along the front end of the socket, and the inner side of the outer ring of the rubber ring 10 is connected to the inner ring through an inclined surface. And the outer ring of the rubber ring 10 is located in the annular groove in the housing 1. The interface sealing body and rubber ring assembled in the housing 1 can also achieve hole position identification and moisture-proof effects.

[0052] The outer periphery of the shell is provided with a flange 12 for fixing with the installation panel, and the flange 12 is in contact with the installation panel through a conductive rubber pad 13. Therefore, the contact piece-spring-plate capacitor-grounding spring-shell-conductive rubber pad-installation panel in the connector of the utility model forms a complete EMI filtering path to effectively suppress electromagnetic interference. The connector of the utility model adopts a double-layer plate capacitor structure inside, which avoids the situation that the EMI parameters of a single plate capacitor cannot be arbitrarily combined, and can realize the EMI parameters of each hole of the connector. Arbitrary combination to meet the EMI suppression requirements in various environments.

[0053] When assembling the connector of the utility model, the contact 2, the glass cake 3 and the housing 1 are first sintered into a whole at high temperature. After sintering, the hole position accuracy of the contact 2 in the housing 1 can be calibrated and straightened by the insulating pad 7 that stops and limits with the stepped surface in the housing 1. Then the plate capacitor 4 and another insulating pad 7 are sequentially installed, the plate capacitor 4 and the contact 2 are connected by the spring, and the plate capacitor and the housing are connected by the grounding spring, forming a complete electromagnetic interference loop between the contact and the housing, and realizing the EMI filtering function.

[0054] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A through-wall sealed filter connector, comprising a housing and a contact member sealed and fixed in the housing, characterized in that: The shell is also provided with at least two plate capacitors spaced apart along the axial direction, each plate capacitor has a through hole for a contact member to pass through, and the contact member is in contact and conduction with the matching plate capacitor via a spring sheet fixed in the through hole, and each plate capacitor is in contact and conduction with the shell.

2. The wall-penetrating sealed filter connector according to claim 1, characterized in that: An insulating pad is also arranged in the shell, which is circumferentially rotationally fixed with the shell and realizes hole positioning of the contact piece in the shell through holes distributed on the insulating pad for the contact piece to pass through.

3. The wall-penetrating sealed filter connector according to claim 2, characterized in that: The contact piece is fixed in the housing by sintering the glass cake, and the plate capacitor is located behind the glass cake.

4. The wall-penetrating sealed filter connector according to claim 3, characterized in that: There are at least two insulating pads, the front end face of one of the insulating pads is matched with the stepped surface in the shell, the rear end faces the axial stopper of the plate capacitor located at the front end, and the remaining insulating pads are pressed between adjacent plate capacitors.

5. The wall-penetrating sealed filter connector according to claim 4, characterized in that: The shell also contains potting glue, which seals and fixes the plate capacitor, the shell and the contact piece at the rear end as a whole, and presses the front end surface of the insulation pad at the front end tightly against the stepped surface in the shell.

6. The wall-penetrating sealed filter connector according to claim 5, characterized in that: The front end and the rear end of the shell both form a socket cavity for mating with the plug, and both ends of the contact piece extend into the corresponding socket cavity.

7. The wall-penetrating sealed filter connector according to claim 6, characterized in that: A rubber ring is fixedly installed in each socket cavity, and the rubber ring cooperates with an interface sealing body fixed at the end face of the glass cake or the potting glue to achieve end face sealing when the end socket is plugged in with the adapter plug.

8. The wall-penetrating sealed filter connector according to claim 7, characterized in that: The interface sealing body is provided with an escape hole for the contact piece to pass through, and a cantilever structure for sealing contact and matching with the outer periphery of the contact piece is formed around the escape hole.

9. The wall-penetrating sealed filter connector according to any one of claims 1 to 8, characterized in that: The spring sheet comprises a fixing portion which is fixedly matched with an end surface of one side of the plate capacitor and a cantilever which is located in the through hole and extends toward the center of the through hole.

10. The wall-penetrating sealed filter connector according to claim 9, characterized in that: The plate capacitor is in contact with the housing through a grounding spring, and the grounding spring is installed in a grounding spring slot provided in the housing.

11. The wall-penetrating sealed filter connector according to any one of claims 1 to 8, characterized in that: The shell is in contact and conduction with the installation panel through a conductive rubber pad arranged at the flange plate.

Images