An underwater plug connector

Abstract

The present invention provides an underwater plug connector, including a jack assembly, including a jack contact; a bladder, covering the outside of the jack contact, and a shell, wherein the shell is provided with one or more mounting holes that pass through from top to bottom, the lower end of the jack contact is arranged in the mounting hole, the lower end of the bladder is clamped between the inner wall of the mounting hole and the outer wall of the jack contact, a sealing surface is formed between the outer wall of the bladder and the inner wall of the mounting hole, and between the inner wall of the bladder and the outer wall of the jack contact, the outer wall of the jack contact is provided with a first concave ring along the circumferential direction, the lower end edge of the bladder is an annular convex bulge, and the annular convex bulge is embedded in the first concave ring to form a first sealing portion. The underwater plug connector of the present invention has two layers of inner and outer sealing surfaces, which increases the electrical insulation distance between the external water and the internal oil cavity.

Description

Technical Field

[0001] The invention relates to the field of electrical connectors, and in particular to an underwater plug-in connector. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] As a key component of underwater facilities, underwater plug-in electrical connectors are often used for power and signal transmission between deep-sea equipment. Underwater plug-in electrical connectors usually include a jack component, which is covered with a bladder. The bladder is filled with dielectric oil to form an oil cavity to maintain the pressure balance between the connector and the external seawater. Figure 8 As shown in the figure, it is an underwater plug connector in the prior art, in which a convex ring is arranged on the inner wall of the bladder of the connector, and a concave ring is arranged on the outer wall of the socket contact, and the convex ring and the concave ring cooperate with each other to maintain the sealing performance of the electrical connector. However, the sealing effect is not ideal when only the convex ring and the concave ring cooperate with each other, especially in an underwater environment, due to the pressure difference between the inside and outside of the bladder, the medium oil inside the bladder is easy to leak.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an underwater plug-in connector.

[0006] In order to solve the above technical problems, the present invention provides an underwater plug-in connector, including a jack assembly, including a jack contact; a leather bag covering the outside of the jack contact, and an outer shell, the outer shell is provided with one or more mounting holes extending through the upper and lower parts, the lower end of the jack contact is arranged in the mounting hole, the lower end of the leather bag is clamped between the inner wall of the mounting hole and the outer wall of the jack contact, two sealing surfaces are formed between the outer wall of the leather bag and the inner wall of the mounting hole, and between the inner wall of the leather bag and the outer wall of the jack contact, the outer wall of the jack contact is circumferentially provided with a first concave ring, the edge of the lower port of the leather bag is an annular convex bulge, and the annular convex bulge is embedded in the first concave ring to form a first sealing portion.

[0007] Preferably, a first convex ring is circumferentially arranged on the outer wall of the bladder, the first convex ring is located on the upper side of the annular convex bulge, and the first convex ring is squeezed between the bladder and the inner wall of the mounting hole to form a second sealing portion.

[0008] Preferably, a second concave ring is circumferentially arranged on the outer wall of the socket contact, the second concave ring is located at the lower side of the first concave ring, a sealing ring is arranged inside the second concave ring, and the inner wall of the mounting hole and the outer wall of the socket contact are sealed by the sealing ring to form a third sealing portion.

[0009] Preferably, the socket assembly also includes a sliding pin and a spring, the socket contact piece is provided with a socket with an insertion port facing upward, the sliding pin is restricted in the socket contact piece, the spring is located in the socket, the upper end of the spring supports the sliding pin, and the lower end is fixed to the bottom of the socket, the upper end of the bladder is covered on the outer wall of the socket contact piece and the outer wall of the sliding pin, the outer wall of the sliding pin is sealed to the upper end of the bladder, a plurality of through holes are opened on the side wall of the socket contact piece, the interior of the bladder is connected to the socket through the through holes, and the interior of the bladder and the socket are filled with dielectric oil to form an oil chamber.

[0010] Preferably, the bladder includes an upper closing section, a middle section and a lower closing section from top to bottom, the upper closing section is covered on the upper end outer wall of the socket contact and the outer wall of the sliding pin, the lower closing section is covered on the outer wall of the socket contact, the lower closing section is clamped between the inner wall of the mounting hole and the outer wall of the socket contact, the first convex ring is arranged on the lower closing section, there is a spacing space between the middle section and the outer wall of the socket contact, the spacing space is connected with the inside of the socket through the through hole, and the spacing space and the socket are filled with dielectric oil.

[0011] Preferably, a fourth concave ring is circumferentially provided on the outer wall of the upper end of the socket contact, and a second convex ring is circumferentially provided on the inner wall of the upper closing section of the leather bag, and the second convex ring is embedded in the fourth concave ring to seal the inner wall of the upper closing section with the outer wall of the socket contact.

[0012] Preferably, the annular bulge has an inner side and an outer side. When the oil pressure in the oil chamber squeezes the medium oil in the oil chamber into the first concave ring, the oil pressure in the first concave ring squeezes the annular bulge outward, so that the outer convex surface of the annular bulge is tightly attached to the inner wall of the mounting hole to form a sealing surface; when the water pressure of the external environment squeezes water into the first concave ring, the water pressure in the first concave ring squeezes the annular bulge inward, so that the inner convex surface of the annular bulge is tightly attached to the inner wall of the first concave ring to form a sealing surface.

[0013] Preferably, the outer wall of the socket contact is provided with a circle of third concave ring along the circumferential direction, the inner wall of the mounting hole is provided with a fifth concave ring spliced ​​with the third concave ring, the third concave ring and the fifth concave ring are spliced ​​with each other to form an annular mounting space, and an annular clamping ring is provided in the annular mounting space.

[0014] Preferably, the shell comprises an upper shell and a lower shell spliced ​​together.

[0015] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0016] The underwater plug connector of the present invention squeezes the bladder between the mounting hole of the shell and the socket contact, so that two sealing surfaces are formed between the outer wall of the bladder and the inner wall of the mounting hole, and between the inner wall of the bladder and the outer wall of the socket contact. This design increases the path length from the external water body to the internal oil chamber, thereby effectively increasing the electrical insulation distance.

[0017] The underwater plug connector of the present invention uses a multi-stage sealing structure, which includes a first sealing part, a second sealing part and a third sealing part, to isolate and seal the internal cavity of the connector from the external environment, ensure the separation of oil and liquid inside and outside the bladder, and achieve a better sealing effect.

[0018] In addition, the connector of the present application is provided with an annular convex bulge, which is embedded in the first concave ring and is sandwiched between the mounting hole of the housing and the socket contact. When the oil pressure in the oil chamber is too high or the water pressure in the external environment is too high, liquid may leak into the first concave ring, and the oil pressure or water pressure in the first concave ring can further squeeze the annular convex bulge, so that the annular convex bulge is pressed against the sealing surface, thereby enhancing the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the underwater plug connector of the present application.

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0021] Figure 3 It is a structural schematic diagram of another embodiment of the underwater plug connector of the present application.

[0022] Figure 4 It is a schematic diagram of the structure of the jack assembly of the present application.

[0023] Figure 5 It is a schematic diagram of the structure of the skin bag of the present application.

[0024] Figure 6 It is a partial enlarged view of the underwater plug connector of the present application when the oil chamber pressure is greater than the external pressure.

[0025] Figure 7 It is a partial enlarged view of the underwater plug connector of the present application when the external water pressure is greater than the oil chamber pressure.

[0026] Figure 8It is a partial structural schematic diagram of an underwater plug connector in the prior art.

[0027] Among them: 1. leather bag; 2. socket assembly; 3. oil chamber; 4. upper shell; 5. lower shell; 6. sealing ring; 7. retaining ring; 11. first convex ring; 12. annular convex bump; 21. sliding pin; 22. spring; 23. first concave ring; 24. second concave ring; 25. third concave ring; 26. fourth concave ring; 31. medium oil in the first concave ring; 10. water in the first concave ring; 13. upper closing section; 14. middle section; 15. lower closing section; 16. second convex ring; 51. fifth concave ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] like Figure 1-3 As shown, the present invention provides an underwater plug connector, including a jack assembly 2, including a jack contact; a bladder 1, which is coated on the outside of the jack contact; and a shell, wherein the shell is provided with one or more mounting holes that pass through from top to bottom, and the lower end of the jack contact is arranged in the mounting hole through the lower end of the bladder 1, and the lower end of the bladder 1 is clamped between the inner wall of the mounting hole and the outer wall of the jack contact, and two layers of sealing surfaces are formed between the outer wall of the bladder 1 and the inner wall of the mounting hole, and between the inner wall of the bladder 1 and the outer wall of the jack contact. This design increases the path length from the external water body to the internal oil chamber 3, thereby effectively increasing the electrical insulation distance.

[0031] The outer wall of the jack contact is provided with a first concave ring 23 along the circumference, and the lower end edge of the bladder 1 is an annular convex 12, and the annular convex 12 is embedded in the first concave ring 23 to form a first sealing part. The outer wall of the bladder 1 is provided with a first convex ring 11 along the circumference, and the first convex ring 11 is located on the upper side of the annular convex 12. The first convex ring 11 is squeezed between the bladder 1 and the inner wall of the mounting hole to form a second sealing part. The outer wall of the jack contact is provided with a second concave ring 24 along the circumference, and the second concave ring 24 is located on the lower side of the first concave ring 23. A sealing ring 6 is provided in the second concave ring 24, and the inner wall of the mounting hole and the outer wall of the jack contact are sealed by the sealing ring 6 to form a third sealing part. The structure uses a multi-stage sealing structure to isolate and seal the internal cavity of the connector from the external environment, ensure the separation of oil and liquid inside and outside the bladder 1, and have a better sealing effect.

[0032] like Figure 4 and 5 As shown, the jack assembly 2 also includes a sliding pin 21 and a spring 22. The jack contact piece is provided with a jack with an insertion port facing upward. The sliding pin 21 is restricted in the jack contact piece. The spring 22 is located in the jack. The upper end of the spring 22 supports the sliding pin 21, and the lower end is fixed to the bottom of the jack. The upper end of the bladder 1 is covered on the outer wall of the jack contact piece and the outer wall of the sliding pin 21. The outer wall of the sliding pin 21 is sealed with the upper end of the bladder 1. A plurality of through holes are provided on the side wall of the jack contact piece. The interior of the bladder 1 is connected with the jack through the through holes. The interior of the bladder 1 and the jack are filled with dielectric oil to form an oil chamber 3. In a preferred embodiment, the leather bag 1 includes an upper closing section 13, a middle section 14 and a lower closing section 15 from top to bottom, the upper closing section 13 is covered on the upper end outer wall of the socket contact and the outer wall of the sliding pin 21, the lower closing section 15 is covered on the outer wall of the socket contact, the lower closing section 15 is clamped between the inner wall of the mounting hole and the outer wall of the socket contact, the first convex ring 11 is arranged on the lower closing section 15, and there is a spacing space between the middle section 14 and the outer wall of the socket contact, the spacing space is connected to the inside of the socket through the through hole, and the spacing space and the socket are filled with medium oil.

[0033] like Figure 2 and 3As shown, the outer wall of the upper end of the socket contact is provided with a fourth concave ring 26 along the circumferential direction, and the inner wall of the upper closing section 13 of the leather bag 1 is provided with a second convex ring 16 along the circumferential direction. The second convex ring 16 is embedded in the fourth concave ring 26 to seal the inner wall of the upper closing section 13 with the outer wall of the socket contact. The outer wall of the socket contact is provided with a circle of third concave rings 25 along the circumferential direction, and the inner wall of the mounting hole is provided with a fifth concave ring 51 spliced ​​with the third concave ring 25. The third concave ring 25 and the fifth concave ring 51 are spliced ​​with each other to form an annular mounting space, and an annular clamping ring 7 is provided in the annular mounting space. The clamping ring 7 can prevent the socket contact from moving radially in the mounting hole. In a preferred embodiment, the housing includes an upper shell 4 and a lower shell 5 spliced ​​up and down.

[0034] The annular convex hull 12 has an inner side and an outer side. In a preferred embodiment, both the inner side and the outer side are convex arc surfaces. Figure 6 As shown, when the oil pressure in the oil chamber 3 squeezes the medium oil 31 in the oil chamber 3 into the first concave ring 23, the oil pressure in the first concave ring 23 squeezes the annular convex bump 12 outward, so that the outer convex surface of the annular convex bump 12 is pressed against the inner wall of the mounting hole to form a sealing surface. Figure 7 As shown, when the water pressure of the external environment squeezes water into the first concave ring 23, the water 10 in the first concave ring 23 squeezes the annular convex bulge 12 inward, so that the inner convex surface of the annular convex bulge 12 is pressed against the inner wall of the first concave ring 23 to form a sealing surface. Therefore, when the oil pressure in the oil chamber 3 is too high or the water pressure in the external environment is too high, and liquid may leak into the first concave ring 23, the oil pressure or water pressure in the first concave ring 23 can further squeeze the annular convex bulge 12, so that the annular convex bulge 12 is pressed against the sealing surface, thereby enhancing the sealing effect of the connector.

[0035] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An underwater plug connector, characterized in that: include, A jack assembly (2), comprising a jack contact; A leather bag (1) covering the outside of the socket contact; The shell is provided with one or more mounting holes extending vertically therethrough, the lower end of the socket contact is arranged to penetrate the mounting hole, the lower end of the bladder (1) is clamped between the inner wall of the mounting hole and the outer wall of the socket contact, and two sealing surfaces are formed between the outer wall of the bladder (1) and the inner wall of the mounting hole, and between the inner wall of the bladder (1) and the outer wall of the socket contact. The outer wall of the socket contact is provided with a first concave ring (23) along the circumferential direction, the lower end edge of the leather bag (1) is an annular convex bulge (12), and the annular convex bulge (12) is embedded in the first concave ring (23) to form a first sealing portion. The interior of the bladder (1) is filled with medium oil to form an oil cavity (3). The annular convex hull (12) has an inner side surface and an outer side surface. Both the inner and outer sides are convex curved surfaces. When the oil pressure in the oil chamber (3) squeezes the medium oil into the first concave ring (23), the oil pressure in the first concave ring (23) squeezes the annular convex bump (12) outward, so that the outer convex surface of the annular convex bump (12) is closely attached to the inner wall of the mounting hole, forming a sealing surface; When the water pressure of the external environment squeezes water into the first concave ring (23), the water pressure in the first concave ring (23) squeezes the annular convex bulge (12) inward, so that the inner convex surface of the annular convex bulge (12) is closely attached to the inner wall of the first concave ring (23), forming a sealing surface.

2. The underwater plug connector according to claim 1, characterized in that: The outer wall of the bladder (1) is provided with a first convex ring (11) along the circumferential direction. The first convex ring (11) is located on the upper side of the annular convex bump (12). The first convex ring (11) is squeezed between the bladder (1) and the inner wall of the mounting hole to form a second sealing portion.

3. The underwater plug connector according to claim 2, characterized in that: A second concave ring (24) is circumferentially arranged on the outer wall of the socket contact piece, the second concave ring (24) is located at the lower side of the first concave ring (23), a sealing ring (6) is arranged inside the second concave ring (24), and the inner wall of the mounting hole and the outer wall of the socket contact piece are sealed by the sealing ring (6) to form a third sealing portion.

4. The underwater plug connector according to claim 3, characterized in that: The jack assembly (2) further comprises a sliding pin (21) and a spring (22); the jack contact piece is provided with a jack with an insertion port facing upward; the sliding pin (21) is restricted in the jack contact piece; the spring (22) is located in the jack; the upper end of the spring (22) supports the sliding pin (21) and the lower end is fixed to the bottom of the jack; the upper end of the leather bag (1) is covered on the outer wall of the jack contact piece and the outer wall of the sliding pin (21); the outer wall of the sliding pin (21) is sealed with the upper end of the leather bag (1); A plurality of through holes are provided on the side wall of the socket contact piece, and the interior of the leather bag (1) is connected to the socket through the through holes.

5. The underwater plug connector according to claim 4, characterized in that: The leather bag (1) comprises, from top to bottom, an upper closing section (13), a middle section (14) and a lower closing section (15). The upper closing section (13) is covered on the upper outer wall of the socket contact and the outer wall of the sliding pin (21). The lower closing section (15) is covered on the outer wall of the socket contact, the lower closing section (15) is clamped between the inner wall of the mounting hole and the outer wall of the socket contact, and the first convex ring (11) is arranged on the lower closing section (15). There is a spacing space between the middle section (14) and the outer wall of the socket contact piece. The spacing space is connected to the inside of the socket through the through hole. The spacing space and the socket are filled with dielectric oil.

6. The underwater plug connector according to claim 5, characterized in that: A fourth concave ring (26) is circumferentially arranged on the outer wall of the upper end of the socket contact, and a second convex ring (16) is circumferentially arranged on the inner wall of the upper closing section (13) of the leather bag (1), and the second convex ring (16) is embedded in the fourth concave ring (26) to seal the inner wall of the upper closing section (13) with the outer wall of the socket contact.

7. The underwater plug connector according to claim 3, characterized in that: The outer wall of the socket contact piece is provided with a circle of third concave rings (25) along the circumferential direction, and the inner wall of the mounting hole is provided with a fifth concave ring (51) spliced ​​with the third concave ring (25). The third concave ring (25) and the fifth concave ring (51) are spliced ​​with each other to form an annular mounting space, and an annular clamping ring (7) is provided in the annular mounting space.

8. The underwater plug connector according to claim 7, characterized in that: The housing comprises an upper housing (4) and a lower housing (5) which are spliced ​​together.

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