Waterproof structure of wire plug

Abstract

The utility model discloses a waterproof structure of a wire plug, which comprises a shell, the upper end of the shell is provided with an opening, the lower end of the shell is connected with a wire, the opening is internally covered with a cover body, the cover body is connected with a pin, and the waterproof structure of the wire plug is characterized in that one side of the cover body extends to form a connecting ring, and the connecting ring can be matched with the circumferential side wall of the opening in an abutting mode. A sealing groove is formed in the outer side of the connecting ring along the circumference in a concave mode, an annular air bag is arranged in the sealing groove in a sleeved mode, a plurality of open holes are formed in the side wall of the shell along the circumference, elastic protruding blocks capable of elastically deforming are arranged in the open holes, and the elastic protruding blocks can partially protrude out of an inner cavity of the shell or the outer side of the shell through deformation of the elastic protruding blocks. The outer side of the shell is sleeved with a limiting ring in a threaded connection mode. When the limiting ring abuts against the elastic protruding block, the elastic protruding block locally deforms and displaces to abut against the annular air bag and extends into the sealing groove.

Description

Technical Field

[0001] The utility model particularly relates to a waterproof structure of an electric wire plug. Background Art

[0002] Most of the existing charging plug structures are provided with an opening at one end of the shell away from the pin, the electrical components are installed in the shell through the opening, and then the opening is directly closed by a cover plate. The structure is simple, but the waterproof ability is poor. Water can easily penetrate into the shell through the gap between the cover plate and the opening, causing the internal components to rust, resulting in the components being easily aged and scrapped.

[0003] In order to solve the above problems, Chinese patent announcement No. CN217009697U discloses a plug shell structure with good waterproof performance, and discloses a shell therein, wherein the lower end of the shell is provided with a pin, the upper end is provided with an opening, a cover plate is provided inside the opening, the inner edge of the opening is provided with a sinking platform formed by sinking downward, the inner edge of the sinking platform is provided with a waterproof baffle ring extending upward, a groove is formed between the waterproof baffle ring and the side wall of the sinking platform, a plug ring extending downward is provided on the edge of the cover plate, and the plug ring is inserted into the groove by interference fit; a rubber sealing pad is provided in the groove.

[0004] In summary, the existing seal between the plug housing and the cover body is achieved by combining the interference fit of the plug ring and the groove and the rubber sealing gasket. The applicant believes that the interference fit still has the risk of leakage due to factors such as the wear of the plug ring or insufficient interference of the plug ring. The key to achieving long-term sealing between the two lies in the sealing ring, but the sealing ring has an aging problem. As the use time increases, the elasticity of the sealing ring material gradually weakens, and it will lose its original size and shape and need to be replaced, so that the long-term maintenance of sealing cannot be fundamentally solved.

[0005] Therefore, it is necessary to provide a waterproof structure for an electric wire plug to improve the above-mentioned problems. Utility Model Content

[0006] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a waterproof structure for an electric wire plug.

[0007] A waterproof structure for a wire plug comprises a shell, wherein the upper end of the shell has an opening, the lower end of the shell is connected to a wire, a cover body is provided inside the opening, a plug pin is connected to the cover body, a connecting ring extends from one side of the cover body, the connecting ring can abut and cooperate with the circumferential side wall of the opening, a sealing groove is concave along the circumference on the outer side of the connecting ring, an annular airbag is sleeved in the sealing groove, a plurality of openings are provided along the circumference of the shell side wall, an elastic protrusion with elastic deformation is provided in the opening, the elastic protrusion can partially protrude outward from the inner cavity of the shell or the outer side of the shell through its own deformation, a limiting ring is sleeved on the outer side of the shell through a threaded connection; when the limiting ring abuts against the elastic protrusion, the elastic protrusion is locally deformed and displaced to abut against the annular airbag and extend into the sealing groove.

[0008] In one embodiment, the sealing groove is located on a side away from the pin and has a plurality of limiting bevel grooves concave along the circumference. The plurality of limiting bevel grooves are arranged in one-to-one correspondence with a plurality of elastic protrusions. The elastic protrusions can be partially embedded in the limiting bevel grooves due to their own deformation.

[0009] In one embodiment, the surface of the elastic protrusion that contacts the limiting inclined groove is an inclined surface.

[0010] In one embodiment, the outer surface of the limiting ring is provided with anti-slip grooves.

[0011] In one embodiment, the elastic protrusion is made of rubber.

[0012] In one embodiment, the annular airbag is made of rubber.

[0013] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0014] The utility model fills the gap between the cover body connecting ring and the shell opening by filling the airbag under pressure and deformation, thereby realizing a sealed connection between the shell and the cover body. The airbag is located inside a sealing groove formed by the combination of the cover body and the shell, which can protect the airbag in a closed manner and reduce the possibility of airbag damage and air leakage. Therefore, the airbag will not lose its original size and shape due to aging due to the presence of gas, and can have a longer-term sealing performance compared with a sealing ring. The abutment between the limit ring and the shell and the cover body can reduce the gap for leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded schematic diagram of a waterproof structure of a wire plug in one embodiment of the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of a waterproof structure of a wire plug in one embodiment of the utility model;

[0017] Figure 3The present invention is a three-dimensional structural schematic diagram of a waterproof structure of an electric wire plug in one embodiment of the present invention. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0019] like Figures 1 to 3 The embodiment of the utility model shown preferably provides a waterproof structure of a wire plug, including a shell 1, the upper end of the shell 1 has an opening 2, the lower end is connected to a wire 3, a cover body 4 is provided inside the opening 2, a pin 5 is connected to the cover body 4, a connecting ring 6 extends from one side of the cover body 4, the connecting ring 6 can abut and cooperate with the circumferential side wall of the opening 2, a sealing groove 7 is concave along the circumference of the outer side of the connecting ring 6, an annular airbag 8 is sleeved in the sealing groove 7, a plurality of openings 9 are provided along the circumference of the side wall of the shell 1, an elastic projection 10 of elastic deformation is provided in the opening 9, the elastic projection 10 can partially protrude outward from the inner cavity of the shell 1 or the outer side of the shell 1 through its own deformation, and a limiting ring 11 is sleeved on the outer side of the shell 1 through a threaded connection; when the limiting ring 11 abuts against the elastic projection 10, the elastic projection 10 is locally deformed and displaced to abut against the annular airbag 8 and extend into the sealing groove 7.

[0020] Specifically, the gap between the cover connecting ring and the shell opening is filled by deforming the airbag under pressure, thereby achieving a sealed connection between the shell and the cover, and the airbag is located inside the sealing groove formed by the combination of the cover and the shell, which can protect the airbag in a closed manner and reduce airbag damage and leakage. Therefore, the airbag will not lose its original size and shape due to aging due to the presence of gas, and can have a longer-term sealing performance compared with a sealing ring; and the abutment between the limit ring and the shell and the cover can reduce the leakage gap.

[0021] Furthermore, the sealing groove 7 is located on a side away from the pin 5 and is concave with a plurality of limiting bevel grooves 12 along the circumference. The plurality of limiting bevel grooves 12 are arranged in a one-to-one correspondence with the plurality of elastic protrusions 10. The elastic protrusions 10 can be partially embedded in the limiting bevel grooves 12 due to their own deformation.

[0022] Specifically, when the limit ring is installed on the shell and moves along the outer thread of the shell, the inner side of the limit ring contacts the outer side of the elastic protrusion, and then the elastic protrusion is deformed and displaced and partially embedded in the limit bevel groove. At this time, the cover body and the shell can be limited to prevent relative rotation, and the elastic protrusion is partially embedded in the limit bevel groove, which can simultaneously play a role in the complete positioning installation between the cover body and the shell.

[0023] Furthermore, the surface of the elastic protrusion 10 that contacts the limiting inclined groove 12 is an inclined surface.

[0024] Furthermore, the outer surface of the limiting ring 11 is provided with anti-slip grooves, so that the staff can screw the limiting ring to install, fix or remove the housing and the cover.

[0025] Furthermore, the elastic protrusion 10 is made of rubber.

[0026] Furthermore, the annular airbag 8 is made of rubber.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A waterproof structure for a wire plug, comprising a housing (1), wherein the housing (1) has an opening (2) at the upper end, a wire (3) is connected to the lower end, a cover (4) is provided inside the opening (2), and a plug pin (5) is connected to the cover (4), Features: A connecting ring (6) extends from one side of the cover body (4), and the connecting ring (6) can be abutted and matched with the circumferential side wall of the opening (2). A sealing groove (7) is concave along the circumference of the outer side of the connecting ring (6), and an annular airbag (8) is sleeved in the sealing groove (7). A plurality of openings (9) are opened along the circumference of the side wall of the shell (1), and an elastic protrusion (10) with elastic deformation is arranged in the opening (9). The elastic protrusion (10) can partially protrude outward from the inner cavity of the shell (1) or the outer side of the shell (1) through its own deformation. A limiting ring (11) is sleeved on the outer side of the shell (1) through a threaded connection; when the limiting ring (11) abuts against the elastic protrusion (10), the elastic protrusion (10) is locally deformed and displaced to abut against the annular airbag (8) and extend into the sealing groove (7).

2. A waterproof structure for electric wire plug according to claim 1, Features: The sealing groove (7) is located on a side away from the plug pin (5) and is concavely provided with a plurality of limiting inclined grooves (12) along the circumference. The plurality of limiting inclined grooves (12) are arranged in a one-to-one correspondence with the plurality of elastic protrusions (10). The elastic protrusions (10) can be partially embedded in the limiting inclined grooves (12) due to their own deformation.

3. A waterproof structure for electric wire plug according to claim 1, Features: The surface of the elastic protrusion (10) that contacts the limiting inclined groove (12) is an inclined surface.

4. A waterproof structure for electric wire plug according to claim 1, Features: The outer surface of the limiting ring (11) is provided with anti-slip grooves.

5. A waterproof structure for electric wire plug according to claim 1, Features: The elastic protrusion (10) is made of rubber material.

6. A waterproof structure for electric wire plug according to claim 1, Features: The annular airbag (8) is made of rubber.

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