CN110611211B

CN110611211B - Plug assembly

Info

Publication number: CN110611211B
Application number: CN201811581881.5A
Authority: CN
Inventors: 王超
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2018-09-30
Filing date: 2018-12-24
Publication date: 2021-09-03
Anticipated expiration: 2038-12-24
Also published as: CN110611211A

Abstract

The present invention relates to a plug assembly. The plug assembly comprises a plug, the plug comprises a conductor contact, an insulating sleeve body and an outer shell which are sequentially fastened and sleeved together from inside to outside, the outer shell comprises at least two separated shells, and at least two adjacent opposite inner side end faces of the separated shells and the insulating sleeve body form an annular groove for mounting a sealing ring. The sealing ring is directly contacted and sealed with the insulating sleeve body, so that the condition that better sealing property must be ensured between the outer shell and the insulating sleeve body in the traditional plug assembly is avoided, and the sealing standard between the insulating sleeve body and the outer shell is reduced, thereby simplifying the processing technology of the plug assembly and reducing the production cost of the plug assembly. By adopting the plug assembly, when a gap is formed between the outer shell and the insulating sleeve body, the sealing ring and the insulating sleeve body still have better sealing performance due to mutual extrusion contact, and the overall electrical protection performance of the electrical connector is improved.

Description

Plug assembly

Technical Field

The present invention relates to a plug assembly.

Background

During oil exploration, exploration equipment needs to transmit signals by means of an electric connector (corresponding to a plug assembly in the invention) and protect related instruments in a low-voltage area. In order to solve the above problems, a chinese patent with publication number CN103647179B discloses a sealed through-wall electrical connector, which includes a conductor pin (equivalent to the conductor contact in the present invention), an insulator, a metal shell and a sealing ring, wherein the insulator includes a glass insulator and a ceramic insulator sequentially arranged along the extending direction of the conductor pin, the insulator surrounds the outer side of the conductor pin, the metal shell surrounds the outer side of the insulator, a pressure-bearing end of the glass insulator is bonded with the plastic insulator, the glass insulator is arranged to prevent the glass insulator from being directly pressed to break, and the stability of the electrical connector is improved.

Although the high-temperature and high-pressure resistant capacity of the electric connector is improved to a certain extent, the whole structure of the electric connector is complex, and the manufacturing cost of the electric connector is increased. The three joint surfaces of the sealed through-wall electric connector are required to ensure good sealing performance, so that the manufacturing cost of the sealed through-wall electric connector is increased to a certain degree, and in the plugging process of the sealed through-wall electric connector, the insulator and the metal shell are easily separated due to different materials, so that a gap is formed between the insulator and the metal shell, the electrical protection performance of the sealed through-wall electric connector is reduced, and potential safety hazards are buried for the use of the sealed through-wall electric connector.

Disclosure of Invention

The invention aims to provide a plug assembly to solve the technical problem that the electric protection performance of an electric connector is reduced due to the fact that a gap is formed between an insulator and a metal shell of the electric connector in the prior art.

In order to achieve the purpose, the plug assembly adopts the following technical scheme:

the plug assembly comprises a plug, the plug comprises a conductor contact, an insulating sleeve body and an outer shell which are sequentially fastened and sleeved together from inside to outside, the outer shell comprises at least two separated shells, and at least two adjacent opposite inner side end faces of the separated shells and the insulating sleeve body form an annular groove for mounting a sealing ring.

Has the advantages that: the sealing ring is directly contacted and sealed with the insulating sleeve body, so that the condition that better sealing property must be ensured between the outer shell and the insulating sleeve body in the traditional plug assembly is avoided, and the sealing standard between the insulating sleeve body and the outer shell is reduced, thereby simplifying the processing technology of the plug assembly and reducing the production cost of the plug assembly. By adopting the plug assembly, when a gap is formed between the outer shell and the insulating sleeve body, the sealing ring and the insulating sleeve body still have better sealing performance due to mutual extrusion contact, and the overall electrical protection performance of the electrical connector is improved.

Further, the sub-shell is a metal shell. The metal shell has stronger structural strength, and the condition that the pressure-bearing surface of the plug assembly is easy to deform is avoided.

Furthermore, the sub-housings at the two ends of all the sub-housings are end housings, and the outer side of at least one end housing, which is opposite to the other end housing, is provided with a stop step for abutting and stopping the adaptive plug connector when the plug is plugged into the adaptive plug connector. The insertion depth of the plug assembly is limited, and good contact between the plug assembly and the adaptive plug connector is guaranteed.

Furthermore, the plug comprises at least two conductor contact elements extending in parallel, at least two positioning insertion holes for the conductor contact elements to be correspondingly inserted and assembled one by one are formed in the outer end, opposite to each other, of at least one end portion shell, and an insulating cylinder section located between each positioning insertion hole and the corresponding conductor contact element is integrally arranged on the insulating sleeve body. The overall structural strength of the plug assembly is improved.

Furthermore, concave-convex structures are arranged between the corresponding contact surfaces of the conductor contact piece and the insulating sleeve body and/or between the corresponding contact surfaces of the insulating sleeve body and the sub-shell body. The concave-convex structure increases the contact area, improves the strength of bearing external force between contact surfaces, and avoids the situation that the conductor contact element is easily separated from the insulating sleeve body, the insulating sleeve body and the sub-shell in the plugging process.

Further, the plug assembly further includes a sealing ring mounted in the ring groove. The arrangement of the sealing ring improves the electrical protection performance.

The plug assembly adopts the following technical scheme:

the plug assembly comprises a plug, the plug comprises a conductor contact, an insulating sleeve body and an outer shell which are sequentially fastened and sleeved together from inside to outside, a flange is integrally arranged on the insulating sleeve body, the flange and the outer shell are arranged at intervals relatively, and the flange and the outer shell are opposite to each other, and the insulating sleeve body forms an annular groove for mounting a sealing ring.

Has the advantages that: the sealing ring is directly contacted and sealed with the insulating sleeve body, so that the condition that better sealing property must be ensured between the outer shell and the insulating sleeve body in the traditional plug assembly is avoided, and the sealing standard between the insulating sleeve body and the outer shell is reduced, thereby simplifying the processing technology of the plug assembly and reducing the production cost of the plug assembly. By adopting the plug assembly, when a gap is formed between the outer shell and the insulating sleeve body, the sealing ring and the insulating sleeve body still have better sealing performance due to mutual extrusion contact, and the overall electrical protection performance of the electrical connector is improved. The arrangement of the flange simplifies the forming mode of the ring groove, and the condition that the ring groove can be formed only by installing two outer shells which are arranged at intervals is avoided.

Further, the outer shell is a metal shell. The metal shell has stronger structural strength, and the condition that the pressure-bearing surface of the plug assembly is easy to deform is avoided.

Furthermore, one side of each outer shell, which is far away from the corresponding flange, is provided with a stopping step which is used for being in abutting and stopping fit with the adaptive plug connector when the plug is plugged with the adaptive plug connector. The insertion depth of the plug assembly is limited, and good contact between the plug assembly and the adaptive plug connector is guaranteed.

Furthermore, concave-convex structures are arranged between corresponding contact surfaces of the conductor contact element and the insulating sleeve body and/or between the insulating sleeve body and the corresponding contact surfaces of the sub-shells, and the plug assembly further comprises a sealing ring arranged in the annular groove. The concave-convex structure increases the contact area, improves the strength of bearing external force between contact surfaces, and avoids the situation that the conductor contact element is easily separated from the insulating sleeve body, the insulating sleeve body and the sub-shell in the plugging process. The arrangement of the sealing ring improves the electrical protection performance.

Drawings

Fig. 1 is a schematic view of a structure of a plug assembly of embodiment 1 of the present invention without a packing being assembled;

fig. 2 is a schematic structural view of embodiment 1 of the plug assembly of the present invention equipped with a seal ring;

FIG. 3 is a schematic view of a seal ring of embodiment 1 of the plug assembly of the present invention in a stressed state;

fig. 4 is an overall structural view of embodiment 2 of the plug assembly of the present invention;

FIG. 5 is a right side view of FIG. 4;

fig. 6 is an overall structural view of embodiment 3 of the plug assembly of the present invention;

description of reference numerals: 1-conductor contact, 2-insulating sleeve, 3-left partial shell, 4-right partial shell, 5-concavo-convex structure, 6-ring groove, 7-sealing ring, 8-adapter plug, 01-conductor contact, 02-insulating sleeve, 03-left partial shell, 04-right partial shell, 05-sealing ring, 06-concavo-convex structure, 07-insulating cylinder segment, 08-ring groove, 001-conductor contact, 002-insulating sleeve, 003-outer shell, 004-flange, 005-sealing ring.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

Embodiment 1 of the plug assembly of the present invention: as shown in fig. 1 to 2, the plug assembly includes a plug including a conductor contact 1, an insulative sleeve body 2, and an outer shell, which are sequentially arranged from inside to outside, the insulative sleeve body 2 surrounds the outer periphery of the conductor contact 1, and the outer shell surrounds the outer periphery of the insulative sleeve body 2. In the embodiment, the outer shell comprises two sub-shells, for convenience of description, the sub-shell positioned on the left side of the plug assembly is called a left sub-shell 3, the sub-shell positioned on the right side of the plug assembly is called a right sub-shell 4, the left sub-shell 3 and the right sub-shell 4 are arranged at intervals, annular grooves 6 for embedding sealing rings 7 are formed on the opposite inner side end surfaces of the two sub-shells and the outer peripheral surface of the insulating sleeve body 2, and the opposite inner side end surfaces of the two sub-shells in the embodiment are the right end surface of the left sub-shell 3 and the left end surface of the right sub-shell 4; the sealing ring 7 is an O-shaped sealing ring.

In the embodiment, the conductor contact 1 is a conductor pin, the conductor contact 1 and the insulating sleeve body 2 are sealed and fixed together by injection, and the insulating sleeve body 2 and the two sub-housings are also sealed and fixed together by injection, which is the prior art and will not be described in detail here. In order to improve the deformation resistance of the plug assembly, in the embodiment, both the two sub-housings are metal housings. It should be noted that, because there are only two sub-housings in this embodiment, both of the two sub-housings constitute the end housing in this embodiment, in addition, because the right side of the plug assembly in this embodiment needs to be fixedly inserted into the adapter, in order to limit the insertion depth of the plug assembly, the opposite outer sides of the right sub-housing 4 and the left sub-housing 3 (i.e., the right side of the right sub-housing 4) are provided with a stopping step, and the stopping step can stop the corresponding portion of the adapter, thereby playing a role in limiting the insertion depth of the plug assembly.

In this embodiment, there is only one conductor contact 1, the left and right ends of the insulating sleeve body 2 respectively exceed the left and right end faces of the corresponding outer shell, the portions of the two sides of the insulating sleeve body 2 exceeding the outer shell both constitute the insulating cylinder segment in this embodiment, and the through hole at the right end of the right sub-shell 4 for the insulating sleeve body 2 to extend out constitutes the positioning insertion hole in this embodiment.

In order to increase area of contact between conductor contact 1 and the insulator housing 2, area of contact between the insulator housing 2 and the shell body, avoid plug assembly conductor contact 1 and insulator housing 2 to take place to separate at the plug in-process, insulator housing 2 and the shell body take place the condition of separation, between conductor contact 1 and the corresponding contact surface of insulator housing 2, all be provided with concave-convex structure 5 between the corresponding contact surface of insulator housing 2 and shell body, concave-convex structure 5 includes annular bead and supplies annular bead male annular groove, conductor contact 1's outer peripheral face and insulator housing 2's outer peripheral face all are provided with annular bead in this embodiment, all be provided with annular groove on the inside wall of insulator housing 2 and the inside wall of shell body. The stop matching of the annular convex edge and the annular groove avoids the separation of the conductor contact element 1 and the insulating sleeve body 2 and the separation of the insulating sleeve body 2 and the outer shell.

When the plug assembly of this embodiment is in use, as shown in fig. 3, when the plug assembly is plugged in the adapter connector 8, the sealing ring 7 can be pushed on the left branch shell 3, the radial inner side of the sealing ring 7 is pressed on the outer peripheral surface of the insulating sleeve body 2, the radial outer side of the sealing ring 7 is pressed on the inner side wall of the adapter connector 8, the sealing ring 7 is directly arranged on the outer peripheral surface of the insulating sleeve body 2, sealing between the inner side walls of the insulating sleeve body 2 and the adapter connector 8 is realized, and the electrical protection performance of the plug assembly is improved.

Embodiment 2 of the plug assembly of the present invention: as shown in fig. 4 and 5, the plug assembly includes a plug, the plug includes a conductor contact 01, an insulation cover 02 hermetically surrounding the outer periphery of the seal contact, and an outer shell hermetically surrounding the outer periphery of the insulation cover 02, the outer shell includes two sub-shells, which are referred to as a left sub-shell 03 and a right sub-shell 04 for convenience of description, a ring groove 08 is formed on a right end surface of the left sub-shell 03, a left end surface of the right sub-shell 04, and an outer peripheral surface of the insulation cover 02, a seal ring 05 is embedded in the ring groove 08, and the seal ring 05 is an O-ring. Concave-convex structures 06 are arranged between corresponding contact surfaces of the conductor contact element 01 and the insulating sleeve body 02 and between corresponding contact surfaces of the insulating sleeve body 02 and the outer shell, and the conductor contact element 01, the insulating sleeve body 02, the left sub-shell 03, the right sub-shell 04, the annular groove 08, the seal ring 05 and the concave-convex structures 06 in the embodiment are the same as the specific structures of the corresponding components in the embodiment 1, and are not described again here. The embodiment 2 is different from the embodiment 1 in that two conductor contacts 01 are provided in this embodiment, the two conductor contacts 01 are arranged in parallel, the left and right ends of the insulating sleeve body 02 respectively exceed the left and right ends of the outer shell, it should be noted that two insulating cylinder segments 07 are provided at the right end of the insulating sleeve body 02, one conductor contact 01 is hermetically inserted into each of the two insulating cylinder segments 07, and two positioning insertion holes through which the insulating cylinder segment 07 passes are provided on the right end surface of the right sub-shell 04.

Embodiment 3 of the plug assembly of the present invention: as shown in fig. 6, the plug assembly includes a plug including a conductor contact 001, an insulating sleeve body 002 sealingly surrounding the outer peripheral side of the conductor contact 001, and an outer shell 003 sealingly surrounding the outer peripheral surface of the insulating sleeve body 002, and the present embodiment is different from the above-described embodiment 2 in that there is one outer shell 003 in the present embodiment, and the outer shell 003 has the same structure as the right partial shell in the above-described embodiment 2, and the insulating sleeve body 002 in the present embodiment is integrally provided with an annular flange 004, and a ring groove for fitting the seal ring 005 is formed in the right end surface of the flange 004, the left end surface of the outer shell 003, and the corresponding outer peripheral surface of the insulating sleeve body 002.

In other embodiments: the outer housing may comprise more than three sub-housings.

In other embodiments: the number of conductor contacts may be three or more.

In other embodiments: the number of the ring grooves can be increased as appropriate.

In other embodiments: the conductor contact may be a conductor receptacle.

In other embodiments: the conductor contact piece and the insulating sleeve body can be in sealed contact by adopting modes of plastic pressing, gluing, assembling and the like, and the similar insulating sleeve body and the outer shell can also be in sealed contact by adopting modes of plastic pressing, gluing, assembling and the like.

Claims

1. The plug assembly, including the plug, the plug includes fastening conductor contact, the insulator housing and the shell body together of suit from inside to outside in proper order, and the insulator housing is sealed to be surrounded at conductor contact periphery side, and the shell body is sealed to be surrounded at insulator housing periphery side, its characterized in that: the shell body includes two at least interval distribution's branch casings, divide the casing to be metal casing, two at least adjacent branch casings the relative medial extremity face with the outer peripheral face of the insulating sleeve body forms the annular that is used for installing the sealing washer, when plug assembly pegs graft in the adaptation plug connector, the radial inboard of sealing washer compresses tightly on the outer peripheral face of the insulating sleeve body, and the radial outside of sealing washer compresses tightly on the inside wall of adaptation plug connector, through directly setting up the sealing washer on the outer peripheral face of the insulating sleeve body, has realized the sealing between the inside wall of the insulating sleeve body and adaptation plug connector.

2. The plug assembly of claim 1, wherein: the sub-shells at two ends of all the sub-shells are end shells, and the back outer side of at least one end shell is provided with a stopping step which is used for being pressed and stopped and matched with the adaptive plug connector when the plug is plugged with the adaptive plug connector.

3. The plug assembly of claim 2, wherein: the plug comprises at least two conductor contact elements extending in parallel, at least two positioning jacks for the conductor contact elements to be correspondingly spliced and assembled one by one are arranged at the outer ends of the opposite sides of at least one end shell, and the insulating sleeve body is integrally provided with an insulating cylinder section positioned between the positioning jacks and the corresponding conductor contact elements.

4. The plug assembly of any one of claims 1 to 3, wherein: concave-convex structures are arranged between the corresponding contact surfaces of the conductor contact piece and the insulating sleeve body and/or between the corresponding contact surfaces of the insulating sleeve body and the sub-shell body.

5. The plug assembly of any one of claims 1 to 3, wherein: the plug assembly further includes a sealing ring mounted in the ring groove.

6. The plug assembly, including the plug, the plug includes fastening conductor contact, the insulator housing and the shell body together of suit from inside to outside in proper order, and the insulator housing is sealed to be surrounded at conductor contact periphery side, and the shell body is sealed to be surrounded at insulator housing periphery side, its characterized in that: the shell body is metal casing, an organic whole is equipped with the flange on the insulating cover body, flange and the relative interval arrangement of shell body, flange and the relative medial surface of shell body with the outer peripheral face of the insulating cover body forms the annular that is used for installing the sealing washer, when plug assembly pegs graft in the adaptation plug connector, the radial inboard of sealing washer compresses tightly on the outer peripheral face of the insulating cover body, and the radial outside of sealing washer compresses tightly on the inside wall of adaptation plug connector, through directly setting up the sealing washer on the outer peripheral face of the insulating cover body, has realized the sealing between the inside wall of the insulating cover body and adaptation plug connector.

7. The plug assembly of claim 6, wherein: and one side of each outer shell, which is far away from the corresponding flange, is provided with a stop step which is used for being in abutting and stopping fit with the adaptive plug connector when the plug is plugged with the adaptive plug connector.

8. The plug assembly of claim 6 or 7, wherein: the plug assembly is characterized in that a concave-convex structure is arranged between the corresponding contact surfaces of the conductor contact element and the insulating sleeve body and/or between the insulating sleeve body and the corresponding contact surface of the sub-shell, and the plug assembly further comprises a sealing ring arranged in the annular groove.