Rectangular plug and sealing ring thereof

Abstract

The application provides a rectangular plug and a sealing ring thereof. The rectangular plug comprises a plug shell, and a sealing ring is arranged on the outer circumferential surface of the plug end of the plug shell. The sealing ring comprises a cylindrical base body extending in the plug direction and used for radial sealing cooperation with the plug end of the mating connector, and an outward turning edge arranged at the end of the cylindrical base body away from the plug direction and used for end face sealing cooperation with the plug end of the mating connector. The rectangular plug can realize end face sealing and radial sealing through the cylindrical base body and the outward turning edge of the sealing ring respectively, and the sealing effect is greatly improved compared with the traditional rectangular plug, and the rectangular plug has a high waterproof level.

Description

Technical Field

[0001] This invention relates to the field of connectors, and more particularly to a rectangular plug and its sealing ring. Background Technology

[0002] With the continuous development of the power and communications industries, connectors are becoming increasingly widely used as common connection devices. Common connectors include circular connectors and rectangular plugs. Among them, rectangular plugs, especially quick-locking type rectangular plugs, often do not have high waterproof sealing requirements and have a lower waterproof sealing rating. They generally achieve end-face sealing through a sealing ring set on the end face of the housing and the mating connector. However, with the continuous improvement of connector usage requirements, there is an urgent need for a rectangular plug with a higher waterproof sealing rating. Summary of the Invention

[0003] The purpose of this invention is to provide a rectangular plug with good waterproof sealing effect; at the same time, this invention also provides a sealing ring for use in the rectangular plug.

[0004] To achieve the above objectives, the technical solution of the rectangular plug of the present invention is as follows: a rectangular plug includes a plug housing, and a sealing ring is installed on the outer peripheral surface of the plug housing's insertion end. The sealing ring includes a cylindrical base extending along the insertion direction for radial sealing engagement with the insertion end of a mating connector, and an outwardly projecting edge disposed at one end of the cylindrical base opposite to the insertion direction for sealing engagement with the end face of the mating connector's insertion end and an outwardly projecting edge on the plug housing. The rectangular plug of the present invention achieves end face sealing and radial sealing respectively through the cylindrical base and outwardly projecting edge of the sealing ring, significantly improving the sealing effect compared to traditional rectangular plugs and providing a higher waterproof rating.

[0005] Plugs and sockets often have locking mechanisms to ensure the reliability of the connection during insertion. The locking mechanism also ensures a tight seal on the plug and socket ends. To guarantee a radial seal, the outer circumference of the cylindrical base of the sealing ring has an annular protrusion that surrounds the cylindrical base and is designed to deform the mating connector's insertion end in the radial direction. This annular protrusion increases the radial deformation of the sealing ring during plug and socket mating, thus improving the radial seal.

[0006] Furthermore, there are two annular protrusions, which are spaced apart in the insertion direction.

[0007] The main reason why traditional rectangular connectors are not used in applications requiring high waterproof sealing is that it is difficult to ensure a seal at the four corners of the connector's mating ends. Compared to circular connectors, their sealing performance is poor. To compensate for the sealing defects at the four corners of rectangular connectors, this invention features a compensating sealing protrusion on the annular protrusion at the corner of the cylindrical base, which enhances the sealing effect at the corner. This compensating sealing protrusion ensures that the gaps at the corners are completely sealed, thus improving the sealing effect.

[0008] The corner radius of two adjacent corners of the plug housing is greater than that of the other two corners to prevent incorrect insertion.

[0009] The sealing ring for a rectangular plug of the present invention includes a cylindrical base extending along the insertion direction for radial sealing engagement with the insertion end of a mating connector, and an outwardly projecting edge disposed at one end of the cylindrical base opposite to the insertion direction for sealing engagement with the end face of the insertion end of the mating connector and the plug housing of the rectangular plug. The sealing ring of the rectangular plug of the present invention achieves end face sealing and radial sealing respectively through the cylindrical base and the outwardly projecting edge, significantly improving the sealing effect compared to conventional rectangular plugs and providing a higher waterproof rating.

[0010] Plugs and sockets often have locking mechanisms to ensure the reliability of the connection during insertion. The locking mechanism also ensures a tight seal on the plug and socket ends. To guarantee a radial seal, the outer circumference of the cylindrical base of the sealing ring has an annular protrusion that surrounds the cylindrical base and is designed to deform the mating connector's insertion end in the radial direction. This annular protrusion increases the radial deformation of the sealing ring during plug and socket mating, thus improving the radial seal.

[0011] Furthermore, there are two annular protrusions, which are spaced apart in the insertion direction.

[0012] The main reason why traditional rectangular connectors are not used in applications requiring high waterproof sealing is that it is difficult to ensure a seal at the four corners of the connector's mating ends. Compared to circular connectors, their sealing performance is poor. To compensate for the sealing defects at the four corners of rectangular connectors, this invention features a compensating sealing protrusion on the annular protrusion of the sealing ring at the corner of the cylindrical base. This compensating sealing protrusion ensures that the gaps at the corners are completely sealed, thus improving the sealing effect.

[0013] The radii of two adjacent corners of the cylindrical substrate are greater than the radii of the other two corners. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a first embodiment of the rectangular plug of the present invention; Figure 2 for Figure 1 Sectional view at point AA; Figure 3 A schematic diagram of the structure of a rectangular socket adapted to the rectangular plug of the present invention; Figure 4 for Figure 1 A schematic diagram of the structure of the middle sealing ring.

[0015] In the attached diagram: 1 plug housing, 11 contact element, 12 outer protrusion, 2 sealing ring, 20 cylindrical base, 21 outward flange, 200 annular protrusion, 201 compensating sealing protrusion, 3 socket, 30 sealing ring. Detailed Implementation

[0016] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0017] A specific embodiment of the rectangular plug of the present invention is as follows: Figures 1 to 4 As shown, the device includes a rectangular plug housing 1 with a plug end at its front end, and a contact element 11 is installed inside the plug end. The outer circumferential surface of the plug end has an outwardly protruding edge 12, and a mounting annular groove is provided on the side of the outwardly protruding edge 12 facing the plug end. A sealing ring 2 is installed in the mounting annular groove. The sealing ring 2 includes a cylindrical base 20 extending along the plugging direction and an outwardly turned edge 21 located at the end of the cylindrical base 20 opposite to the plugging direction. The outwardly protruding edge 12 abuts against the end face of the cylindrical base 20 opposite to the plug end. The cylindrical base 20 is used to cooperate with the plug end of the compatible socket 3 to ensure radial sealing in the plugged state, and the outwardly turned edge 21 is used to cooperate with the plug end of the compatible socket 3 to ensure end face sealing in the plugged state. The socket 3 achieves sealed installation with the mounting panel through the sealing ring 30 installed on it. By sealing the radial and end faces of the plug and socket that are plugged in, the sealing effect is improved, achieving a high waterproof rating.

[0018] Plugs and sockets often have locking mechanisms to ensure the reliability of the plug-socket connection during insertion. The locking mechanism also ensures a tight seal on the end faces of the plug and socket. To ensure radial sealing of the plug and socket, the outer circumference of the cylindrical base 20 of the sealing ring 2 has annular protrusions 200 surrounding the cylindrical base 20, which are used to deform the mating end of the adapter in the radial direction. These annular protrusions 200 increase the radial deformation of the sealing ring during plug-socket insertion, thus improving the radial sealing effect. There are two annular protrusions 200, spaced apart in the insertion direction.

[0019] The main reason why traditional rectangular connectors are not used in applications requiring high waterproof sealing is that it is difficult to ensure a seal at the four corners of the connector's mating ends, resulting in poorer sealing performance compared to circular connectors. To compensate for this sealing defect at the four corners of the rectangular connector, this invention features a compensating sealing protrusion 201 on the annular protrusion 200 at the corners of the cylindrical base, which enhances the sealing effect at the corners. This compensating sealing protrusion 201 ensures that the gaps at the corners are completely sealed when the plug and socket are mated, thus improving the sealing effect.

[0020] In this invention, the radius of curvature of the two adjacent corners of the plug housing at the insertion end is greater than the radius of curvature of the other two corners. This prevents incorrect insertion when the plug is inserted into the socket. Correspondingly, as... Figure 4 As shown, the corner radius of two adjacent corners of sealing ring 2 is greater than that of the other two corners.

[0021] The rectangular plug of the present invention is not limited to the above-described embodiments. In other embodiments, there may be one or three annular protrusions. When there are three annular protrusions, the three annular protrusions are spaced apart in the insertion direction. Alternatively, in other embodiments, a protrusion facing the insertion direction may also be provided on the outer flange to improve the end face sealing effect when inserted into the compatible socket.

[0022] The rectangular plug of the present invention can achieve both end face and radial sealing by installing a sealing ring with a cylindrical base and an outward flange on the outer peripheral surface of the plug end, thereby improving the waterproof sealing level and making it suitable for applications with a high sealing level.

[0023] An embodiment of the sealing ring for a rectangular plug according to the present invention has the same structure as the sealing ring structure in the above-described rectangular plug embodiment, and will not be described again here.

Claims

1. A rectangular plug, comprising a plug housing, characterized in that, The outer peripheral surface of the plug end at the front end of the plug housing is provided with an outwardly protruding edge. A mounting annular groove for mounting a sealing ring is provided on the side of the outwardly protruding edge facing the plug end. The sealing ring includes a cylindrical base extending along the plugging direction for radial sealing engagement with the plug end of the adapter connector, and an outwardly turned edge disposed at the end of the cylindrical base opposite to the plugging direction for sealing engagement with the end face of the plug end of the adapter connector and the outwardly protruding edge on the plug housing. The cylindrical base is fully filled in the mounting annular groove. The front wall of the mounting annular groove forms a stop surface for blocking the front end face of the cylindrical base, and the rear wall forms a stop surface for blocking the rear end face of the cylindrical base. The outer peripheral surface of the cylindrical base has an annular protrusion surrounding the cylindrical base, which is radially compressed by the plug end of the adapter connector to increase the radial deformation of the sealing ring. At the corner of the cylindrical base, a circumferentially extending compensating sealing protrusion protrudes outward from the annular protrusion to further increase the radial deformation of the sealing ring and enhance the sealing effect at the corner.

2. The rectangular plug according to claim 1, characterized in that, There are two annular protrusions, spaced apart in the insertion direction; a protrusion facing the insertion direction is provided on the outward flange; the corner radius of two adjacent corners of the plug housing is greater than the corner radius of the other two corners.

3. A sealing ring for a rectangular plug, characterized in that, The device includes a cylindrical base extending along the insertion direction for radial sealing engagement with the insertion end of a mating connector, and an outwardly convex edge disposed at one end of the cylindrical base opposite to the insertion direction for sealing engagement with the end face of the insertion end of the mating connector and the plug housing of a rectangular plug; the outer peripheral surface of the cylindrical base has an annular protrusion surrounding the cylindrical base for being radially compressed by the insertion end of the mating connector to increase the radial deformation of the sealing ring; the annular protrusion has a circumferentially extending compensating sealing protrusion protruding outward at the corner position of the cylindrical base to further increase the radial deformation of the sealing ring and enhance the sealing effect at the corner.

4. The sealing ring for a rectangular plug according to claim 3, characterized in that, There are two annular protrusions, spaced apart in the insertion direction; a protrusion facing the insertion direction is provided on the outward flange; the corner radius of two adjacent corners of the plug housing is greater than the corner radius of the other two corners.

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