Waterproof structure of electric connector

Abstract

The utility model discloses a waterproof structure of an electric connector, which comprises a plug shell, a mounting cavity is arranged on the plug shell, a sealing element is arranged in the mounting cavity, and an arranged gland is connected with the mounting cavity so as to compact the sealing element in the mounting cavity; the sealing piece is further provided with an extending part, and the side face of the gland is further provided with an avoiding area. In the connecting process of the gland and the mounting cavity, the extending part moves along the avoiding area, and on one hand, the gland is promoted to be smoothly connected with the mounting cavity; on the other hand, the phenomenon that the sealing piece is turned up in the downward moving process of the gland is avoided. On the basis, the structure of the sealing element and the gland is optimized, so that the conditions that the sealing element moves along with the gland in the downward moving process and the mounting cavity is not sealed tightly due to the flanging phenomenon are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a waterproof structure of an electric connector. Background Art

[0002] Due to the waterproof requirements of electrical connectors, a seal is typically installed between the plug housing and the gland. However, in the prior art, when the gland is inserted, the edge of the gland, after contacting the seal, continues to move downward, causing the upper edge of the seal to move toward the inner side of the seal, forming a "flanging" phenomenon. This "flanging" phenomenon not only affects the smooth insertion of the gland and the plug housing, but also easily leads to uneven clearance between the gland and the plug housing, creating gaps and losing the sealing function. Utility Model Content

[0003] The purpose of the present utility model is to provide a waterproof structure of an electrical connector to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a waterproof structure of an electrical connector, comprising a plug housing, a mounting cavity being provided on the plug housing, and a sealing member being provided in the mounting cavity, wherein a pressure cover is provided and connected to the mounting cavity to compact the sealing member in the mounting cavity; an extension portion is further provided on the sealing member, and a side surface of the pressure cover is further provided with an avoidance area for avoiding the extension portion.

[0005] As a preferred technical solution of the present invention: the cross section of the sealing member is rectangular, and the extension portions are arranged on the four inner sides of the sealing member.

[0006] As a preferred technical solution of the present invention: a connecting pin is further provided on the inner wall surface of the installation cavity, and the connecting pin is adapted to be connected with the connecting port provided on the pressure cover.

[0007] As a preferred technical solution of the present invention: a hook is further provided in the middle of the gland, and the hook is adaptively connected to a hook groove provided in the installation cavity.

[0008] As a preferred technical solution of the present invention: a plug hole is further provided in the installation cavity, and the pressure cover is adaptively connected to the plug hole through a plug pin.

[0009] By adopting the above technical solution, the present invention has the following beneficial effects: when the gland and the mounting cavity are connected, the extension moves along the avoidance zone, which not only facilitates the gland to connect smoothly with the mounting cavity, but also prevents the seal from "flanging" during the gland's downward movement. Based on this, the present invention optimizes the structure of the seal and gland to avoid the gland moving with the seal during the gland's downward movement, and prevents the gland from causing the seal to move with it, and prevents the "flanging" phenomenon from causing a loose seal in the mounting cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an exploded schematic diagram of the main structure of the utility model;

[0011] Figure 2 for Figure 1 A partial enlarged schematic diagram of the H in the middle;

[0012] Figure 3 This is a schematic diagram of the main structure of the sealing element of the utility model;

[0013] Figure 4 This is a schematic diagram of the main structure of the gland of the utility model;

[0014] Figure 5 This is a schematic diagram of the main structure of the plug housing of the utility model.

[0015] In the figure: 1. Plug housing; 18. Gland; 19. Seal; 110. Connecting pin; 111. Mounting cavity; 112. Avoidance area; 113. Connecting port; 114. Hook; 115. Hook groove; 116. Extension; 117. Connecting hole; 118. Connecting pin. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limitations on the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0017] See also Figure 1-5The utility model provides an embodiment: a waterproof structure of electric connector, including plug shell 1, be equipped with installation cavity 111 on plug shell 1, and be equipped with sealing element 19 in installation cavity 111, utilize the grommet 18 of being equipped with and installation cavity 111 is connected to press sealing element 19 in installation cavity 111, sealing element 19 is also equipped with extension 116, and the side of grommet 18 is also equipped with the avoidance area 112 for avoiding extension 116.

[0018] When the grommet 18 and the installation cavity 111 are connected, the extension 116 moves along the avoidance area 112, which facilitates the connection of the grommet 18 and the installation cavity, avoids the "flanging" phenomenon of the sealing element during the downward movement of the grommet 18, and further facilitates the smooth insertion of the grommet 18 into the installation cavity 111.

[0019] Further, since the cross section of the sealing element 19 is rectangular, and the extension 116 is arranged on the four inner sides of the sealing element 19, the extension 116 can contact the grommet 18 from four sides, so that the sealing element 19 does not have the "flanging" phenomenon on any side during the pressing process, thereby effectively solving the problem of sealing failure of the device due to the "flanging" phenomenon during the pressing of the sealing element 19.

[0020] To ensure reliable fixation of the grommet 18 and the installation cavity 111 after connection, the inner wall surface of the installation cavity 111 is also provided with a connecting pin 110, and the connecting pin 110 is connected with the connecting port 113 provided on the grommet 18. Therefore, when the connecting port 113 and the connecting pin 110 are connected, the edge of the grommet 18 can be fixed.

[0021] Based on the above-mentioned scheme, the middle part of the grommet 18 is also provided with a hook 114, and the hook 114 is connected with the hook groove 115 provided in the installation cavity 111. Therefore, the grommet 18 can be fixed in the middle part.

[0022] Therefore, the edge of the grommet 18 is reliably fixed, and the middle part can also be fixed, so that the grommet 18 can stably and reliably press the sealing element 19 in the installation cavity 111 after being connected with the plug shell 1, to ensure the sealing performance of the device.

[0023] In addition, to further enhance the smoothness of the connection between the gland 18 and the plug housing 1, a plug hole 117 is provided within the mounting cavity 111, and the gland 18 is adapted to connect with the plug hole 117 via a plug pin 118. Therefore, when the plug pin 118 is connected to the plug hole 117, the plug pin 118 moves along the plug hole 117, thereby guiding the downward movement of the gland 18 and limiting the change in position of the gland 18 during its downward movement, thereby ensuring that the gland 18 can be smoothly and reliably connected to the plug housing 1.

[0024] In summary, the device optimizes the structure of the gland 18 and the seal 19. Although the structure is simple, due to the simple structural optimization, firstly, there is no need to change the shape of the electrical connector; secondly, it is easy to produce and process; and thirdly, it reduces the production difficulty and production cost of the equipment.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A waterproof structure for an electrical connector, characterized in that: The invention comprises a plug housing (1), wherein the plug housing (1) is provided with a mounting cavity (111), a sealing member (19) is provided in the mounting cavity (111), and a pressure cover (18) is connected to the mounting cavity (111) to press the sealing member (19) into the mounting cavity (111); An extension portion (116) is further provided on the sealing member (19), and a side surface of the pressure cover (18) is further provided with an escape area (112) for escaping the extension portion (116).

2. The waterproof structure of an electrical connector according to claim 1, characterized in that: The cross section of the sealing member (19) is rectangular, and the extension portion (116) is arranged on four inner sides of the sealing member (19).

3. The waterproof structure of an electrical connector according to claim 1, characterized in that: A connecting pin (110) is also provided on the inner wall surface of the installation cavity (111), and the connecting pin (110) is adapted to be connected to a connecting port (113) provided on the pressure cover (18).

4. The waterproof structure of an electrical connector according to claim 1, 2 or 3, characterized in that: A hook (114) is further provided in the middle of the pressure cover (18), and the hook (114) is adapted to be connected with a hook groove (115) provided in the installation cavity (111).

5. The waterproof structure of an electrical connector according to claim 4, characterized in that: A plug hole (117) is also provided in the installation cavity (111), and the pressure cover (18) is adaptively connected to the plug hole (117) via a plug pin (118).

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