CN112117586A - Pressure-resistant waterproof connecting structure and method for cables - Google Patents

Pressure-resistant waterproof connecting structure and method for cables Download PDF

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Publication number
CN112117586A
CN112117586A CN202010766423.XA CN202010766423A CN112117586A CN 112117586 A CN112117586 A CN 112117586A CN 202010766423 A CN202010766423 A CN 202010766423A CN 112117586 A CN112117586 A CN 112117586A
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China
Prior art keywords
shell
cable
cavity
sealing
head shell
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Granted
Application number
CN202010766423.XA
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Chinese (zh)
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CN112117586B (en
Inventor
刘双仲
汤明东
毛建强
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Liaoning Censcience Industry Co Ltd
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Liaoning Censcience Industry Co Ltd
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Priority to CN202010766423.XA priority Critical patent/CN112117586B/en
Publication of CN112117586A publication Critical patent/CN112117586A/en
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Publication of CN112117586B publication Critical patent/CN112117586B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
    • H01R13/5221—Sealing means between coupling parts, e.g. interfacial seal having cable sealing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/523—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The invention relates to a pressure-resistant waterproof connecting structure of a cable, which comprises a sealing buckle, a female head shell, an insulating blocking plate, a connecting buckle, a male head shell, a sealing glue and a sealing structure, wherein the sealing buckle is arranged on the female head shell; the inner parts of the female head shell and the male head shell are communicated shell cavities, and the connecting ends of the female head shell and the male head shell are fixed through connecting buckles; the cable is butted in a shell cavity formed after the female shell and the male shell are connected, and the insulating blocking plate is arranged at the butted position of the cable in the shell cavity so as to fix the cable; sealant is filled in a gap between the inner wall of the cavity of the shell and the cable; the female shell and the male shell are provided with a sealing structure at the other end opposite to the connecting end, and the sealing structure is fastened to the other end of the female shell or the male shell through a sealing buckle. The sealing connection form effectively realizes the insulation and water-proof effects of the cable joint and effectively prevents water and oil stains from being immersed.

Description

Pressure-resistant waterproof connecting structure and method for cables
Technical Field
The invention relates to the field of cable connectors, in particular to a pressure-resistant waterproof connecting structure of a cable and a connecting method thereof.
Background
Cable splices are a common type of electromechanical component used in everyday life and industry to connect electrical wires. Under some special conditions, certain requirements are imposed on the service life of the cable joint. In a deep water environment, the cable joint not only needs to play a connecting role, but also needs to have better water resistance, insulation and pressure resistance and meet certain tension capacity.
The invention discloses a cable joint insulating and waterproof connecting method (CN 111106573A). According to the method, an insulating hot-melt silica gel heat-shrinkable tube sleeve is sleeved on the periphery of a cable connecting buckle, and the insulating sealing treatment of an interface is completed through hot air treatment. The cable treated by the method is not suitable for being overlong, and has poor use effect in a water environment with certain pressure.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a pressure-resistant and waterproof connection structure for cables, which solves the problems of poor sealing performance, poor water pressure resistance, no tension at the connection point, poor insulation performance, etc. of the existing cable joint in a water environment.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
in a first aspect, an embodiment of the present invention provides a pressure-resistant waterproof connection structure for a cable, including a sealing buckle, a female head shell, an insulating blocking plate, a connecting buckle, a male head shell, a sealant and a sealing structure;
the inner parts of the female head shell and the male head shell are communicated shell cavities, and the connecting ends of the female head shell and the male head shell are fixed through connecting buckles;
cables are butted in the shell cavity formed after the female head shell and the male head shell are connected, and the insulating blocking plate is arranged at the butted part of the cables in the shell cavity so as to fix the cables on the left side and the right side;
the sealant is filled in a gap between the inner wall of the cavity of the shell and the cable;
the female head shell and the other end portion, opposite to the connecting end, of the male head shell are provided with sealing structures, and the sealing structures are fastened to the other end portion of the female head shell or the other end portion of the male head shell through sealing buckles.
Optionally, the sealing structure comprises a partition and two sealing sleeves;
the partition plate and the sealing sleeves are of annular structures, the cross sections of the partition plate and the sealing sleeves are triangular, the two sealing sleeves are arranged side by side, and the partition plate is arranged outside the two sealing sleeves and jointly forms an annular structure with a trapezoidal cross section.
Optionally, the shell cavity is a symmetrical cavity, and a middle butt joint cavity, a middle circular truncated cone cavity and an end cavity are sequentially arranged from the middle to two sides of the shell cavity;
the cavity at the internal butt joint of the shell cavity is a middle butt joint cavity which is used for accommodating the insulating blocking plate; the middle butt joint cavity and the end part cavity are both cylindrical cavities, one side of the long side of the middle round platform cavity is communicated with the middle butt joint cavity, and one side of the short side of the middle round platform cavity is communicated with the end part cavity;
the other ends of the female head shell and the male head shell contract inwards to form a shell boss; an end circular truncated cone cavity is formed in the center of the end of the boss of the shell and is communicated with the third section cavity;
the center of the sealing buckle is provided with two communicated cylindrical cavities, namely a buckle first cavity and a buckle second cavity; the joint of the two cavities forms an annular table top, and the right angle of the annular table top is provided with the end circular truncated cone cavity;
the joints between the cavities are all in arc transition.
Optionally, the connection end surface of the female head shell and the male head shell is provided with a sealing ring.
Optionally, the end circular truncated cone cavity of the female head shell or the male head shell is opposite to the opening direction of the end circular truncated cone cavity of the sealing buckle, and the sealing structure is sleeved on the cable and located between the two end circular truncated cone cavities with opposite openings.
Optionally, the sealing buckle is sleeved on the cable, threads are arranged inside the second buckle cavity and outside the boss of the shell, and the sealing buckle is connected with the boss of the shell through the threads.
Optionally, the link of public first shell is equipped with the tight boss in top, the link of female first shell is equipped with the screw thread boss, the connector link is ring structure, and the cross section is the L type, the connector link cover is located on the tight boss in top of public first shell, the connector link inboard is equipped with the screw thread, with the screw thread accordant connection that the screw thread boss outside was equipped with.
Optionally, the insulating blocking plate is a solid cylinder, and a concentric annular gap structure is axially arranged on the insulating blocking plate; or a plurality of cylinder through holes are arranged in the axial direction of the solid cylinder for the cable to pass through.
Optionally, the cables on the left side are arranged inside the female shell, the cables on the right side are arranged inside the male shell, and the cables on the left side and the cables on the right side are respectively arranged in a gap between two butted insulating blocking plates.
In a second aspect, an embodiment of the present invention provides a connection method of a pressure-resistant waterproof connection structure of a cable, including the following steps;
s1: inserting the cable on the left side into the sealing buckle and the sealing structure from the left side until the cable penetrates out of the right side of the female head shell, and meanwhile, reserving a certain length so as to be connected with the cable on the right side;
s2: the sealing buckle is fixed with the female head shell from the left side to the right side, and the sealing buckle, the female head shell and the left cable slowly extrude the sealing structure in a three-dimensional space along with the rightward screwing of the sealing buckle, so that gaps among the sealing structure, the female head shell and the left cable are gradually reduced and fastened;
s3: filling the shell cavity in the female head shell with sealant;
s4: inserting the cable on the left side into the edge blocking plate on the left side, inserting the insulating blocking plate into the female head shell from the right side to the left side, and ensuring the stability of the cable on the left side by interference fit of the outer side of the insulating blocking plate and the first section of cavity;
s5: inserting the right cable to be connected into the other sealing buckle and the sealing structure from the right side until the right cable penetrates out of the left side of the male shell, and meanwhile, keeping a certain length so as to be connected with the left cable;
s6: the sealing buckle is fixed with the male head shell from the right side to the left side, and the sealing buckle, the male head shell and the right cable slowly extrude the sealing structure in a three-dimensional space along with the leftward screwing of the sealing buckle, so that gaps among the sealing structure, the male head shell and the right cable are gradually reduced and fastened;
s7: filling the cavity of the shell in the male shell with sealant;
s8: inserting the right cable into the right edge blocking plate, inserting the insulating blocking plate into the male shell from the left side to the right side, and ensuring the stability of the right cable by interference fit of the outer side of the insulating blocking plate and the first section of cavity;
s9: connecting the cables on the left side and the right side in a butt joint manner;
s10: the male shell and the female shell are connected through the connecting buckle, and a closed cavity is formed inside the connecting surface of the male shell and the female shell along with the compression of the male shell and the female shell.
(III) advantageous effects
The invention has the beneficial effects that: the pressure-resistant waterproof connecting structure of the cable can realize the quick connection of the cable joint, has small joint volume, light weight and high reliability, and the joint part can completely meet the use working condition of the standard requirement of the original cable in a water environment.
The invention comprises a male shell and a female shell, wherein a sealing ring and a connecting buckle with threads are arranged between the two shells, sealing colloid is filled in the male shell and the female shell, two sealing sleeves are respectively arranged on the outer sides of the male shell and the female shell, and the sealing effect is realized by the locking of a partition plate and a sealing buckle.
Furthermore, the sealing ring in the middle of the cable connector, the sealing rubber in the shell and the sealing sleeves on two sides realize the sealing of the cable connector. The sealing connection mode effectively achieves the insulation and water-proof effects of the cable joint, and effectively prevents water and oil stains from being immersed.
Drawings
Fig. 1 is a sectional view of a pressure-resistant waterproof connecting structure of a cable according to the present invention;
[ description of reference ]
1: sealing the buckle;
2: a partition plate;
3: sealing sleeves;
4: a female head shell;
5: an insulating blocking plate;
6: a connecting buckle;
7: a male shell;
8: a cable;
9: a plug;
10: a seal ring;
11: a jack;
12: sealing glue;
13, sealing structure;
14: a boss of the shell;
15: a cavity of the end part round platform;
16: a housing cavity; 161: a first section of cavity; 162: a middle circular truncated cone cavity; 163: an end cavity;
17: the first cavity is buckled;
18: the second cavity is buckled;
19: tightly propping the boss;
20: and (4) a thread boss.
Detailed Description
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1:
a pressure-resistant waterproof connecting structure of a cable comprises a sealing buckle 1, a female head shell 4, an insulating blocking plate 5, a connecting buckle 6, a male head shell 7, a sealing glue 12 and a sealing structure 13;
the inner parts of the female head shell 4 and the male head shell 7 are communicated shell cavities 16, and the connecting ends of the female head shell 4 and the male head shell 7 are fixed through connecting buckles 6; the inner side of the connecting buckle 6 is provided with a compression space so as not to influence the sealing effect.
The cable 8 docks in the casing cavity 16 that forms after female first shell 4 and public first shell 7 are connected, and left cable 8 sets up inside female first shell 4, and the cable 8 setting on right side is inside public first shell 7, and the cable 8 of the left and right sides sets up respectively in the space of the insulating closure plate 5 of two docks. Two insulating closure plates 5 set up the butt joint department of the cable 8 in casing cavity 16 to fix the cable 8 of the left and right sides, the cable 8 of the left and right sides can adopt grafting or articulated etc. can be linked together the mode, if adopt the grafting, can be equipped with jack 11 with the tip of left cable 8, the tip of the cable 8 on right side is equipped with plug 9, jack 11 and plug 9 set up in insulating closure plate 5, jack 11 and plug 9 realize the butt joint in insulating closure plate 5.
The number of cables 8 in the present invention is four cores, but the cables 8 in the present invention are not limited thereto, and the number of cables 8 may be adjusted according to actual requirements.
The gap between the inner wall of the shell cavity 16 and the cable 8 is filled with the sealant 12 to fill the gap and generate a sealing effect;
the other end portions of the female and male housings 4 and 7 opposite to the connection end are each provided with a seal structure 13, and the seal structure 13 is fastened to the other end portion of the female or male housing 4 or 7 by a seal buckle 1. Further, the sealing buckle 1 is sleeved on the cable 8, threads are arranged inside the buckle second cavity 18 and outside the shell boss 14, and the sealing buckle 1 is connected with the shell boss 14 through the threads.
Further, the sealing structure 13 includes a partition plate 2 and two sealing sleeves 3; baffle 2 and seal cover 3 are the loop configuration, and the cross section is triangle-shaped, and two seal covers 3 set up side by side, and baffle 2 sets up in two seal covers 3 outsides, constitutes the cross section jointly and is trapezoidal loop configuration. When fastening sealing buckle 1, along with the increase of screwing up the degree, sealing buckle 1 just tightens more with the pressfitting of seal cover 3, and seal cover 3 tightens more with the pressfitting of baffle 2 to seal cover 3 is inseparabler with 8 pressfittings of cable more, and sealed effect is better, and waterproof and withstand voltage effect is better.
The interior of the shell cavity 16 is a symmetrical cavity, and a middle butt joint cavity 161, a middle circular truncated cone cavity 162 and an end part cavity 163 are sequentially arranged from the middle to two sides;
the cavity at the butt joint of the inner part of the shell cavity 16 is a middle butt joint cavity 161, and the middle butt joint cavity 161 is used for accommodating the insulating blocking plate 5; the middle butt joint cavity 161 and the end part cavity 163 are both cylindrical cavities, one side of the long side of the middle circular truncated cone cavity 162 is communicated with the middle butt joint cavity 161, and one side of the short side of the middle circular truncated cone cavity 162 is communicated with the end part cavity 163; the middle circular truncated cone cavity 162 and the end part cavity 163 are filled with the sealant 12, and the middle circular truncated cone cavity 162 is used for buffering a space reserved for bending and butt joint of the cable 8.
The other ends of the female shell 4 and the male shell 7 contract inwards to form a shell boss 14; an end circular truncated cone cavity 15 is formed in the center of the end of the shell boss 14, an opening of the end circular truncated cone cavity 15 faces outwards, and the end circular truncated cone cavity 15 is communicated with the third section cavity 163;
the center of the sealing buckle 1 is provided with two sections of communicated cylindrical cavities, namely a buckle first cavity 17 and a buckle second cavity 18; the joint of the two cavities forms an annular table top, and a circular truncated cone cavity 15 at the end part is arranged at the right angle of the annular table top; the joints between the cavities are all in arc transition.
The connection end surfaces of the female shell 4 and the male shell 7 are provided with sealing rings 10 to effectively seal the connection part so as to prevent liquid from flowing out.
The end circular truncated cone cavity 15 of the female head shell 4 or the male head shell 7 is opposite to the opening direction of the end circular truncated cone cavity 15 of the sealing buckle 1, and the sealing structure 13 is sleeved on the cable 8 and is positioned between the two end circular truncated cone cavities 15 with opposite openings.
The link of public first shell 7 is equipped with the tight boss in top 19, and the link of female first shell 4 is equipped with screw thread boss 20, and connector link 6 is the loop configuration, and the cross section is the L type, and 6 covers of connector link are equipped with the screw thread on locating the tight boss in top 19 of public first shell 7, and 6 inboards of connector link are equipped with the screw thread, and the screw thread accordant connection that is equipped with in the outside with screw thread boss 20. Of course, the present invention is not limited to this, and the connection manner of the connector 6 to the male housing 7 and the female housing 4 may be a fixable connection manner such as a clip connection or a flange connection.
The insulating blocking plate 5 is a solid cylinder and is axially provided with a concentric annular gap structure; or a plurality of cylinder through holes are axially formed in the solid cylinder, the annular gap structure and the cylinder through holes are used for the cables 8 to pass through, and after the cables 8 pass through, the remaining gaps are filled with the cables 8 for sealing and fixing.
After the sealing buckle 1, the female head shell 4, the insulating blocking plate 5, the connecting buckle 6, the male head shell 7 and the sealing structure 13 are connected, all axes are on the same straight line, and therefore the sealing effect is guaranteed. A connecting method of a pressure-resistant waterproof connecting structure of a cable comprises the following steps;
s1: inserting the cable 8 on the left side into the sealing buckle 1 and the sealing structure 13 from the left side until the cable penetrates out of the right side of the female head shell 4, and meanwhile, reserving a certain length so as to be connected with the cable 8 on the right side;
s2: the sealing buckle 1 is fixed with the female head shell 4 from the left side to the right side, and along with the fact that the sealing buckle 1 is screwed rightwards, the sealing buckle 1, the female head shell 4 and the left cable 81 slowly extrude the sealing structure 13 in a three-dimensional space, so that gaps among the sealing structure 13, the female head shell 4 and the left cable 8 are gradually reduced and fastened;
s3: filling the shell cavity 16 in the female shell 4 with the sealant 12;
s4: inserting the cable 8 on the left side into the edge blocking plate 5 on the left side, inserting the insulating blocking plate 5 into the female head shell 4 from the right side to the left side, and ensuring the stability of the cable 8 on the left side by interference fit of the outer side of the insulating blocking plate 5 and the first section of cavity 161;
s5: inserting the right cable 8 to be connected into the other sealing buckle 1 and the sealing structure 13 from the right side until the right cable penetrates out of the left side of the male shell 7, and meanwhile, reserving a certain length so as to be connected with the left cable 8;
s6: the sealing buckle 1 is fixed with the male shell 7 from the right side to the left side, and along with the leftward screwing of the sealing buckle 1, the male shell 7 and the right cable 82 slowly extrude the sealing structure 13 in a three-dimensional space, so that gaps among the sealing structure 13, the male shell 7 and the right cable 8 are gradually reduced and fastened;
s7: filling the shell cavity 16 in the male shell 7 with the sealant 12;
s8: inserting the right cable 8 into the right edge blocking plate 5, inserting the insulating blocking plate 5 into the male shell 7 from the left side to the right side, and ensuring the stability of the right cable 8 due to the interference fit between the outer side of the insulating blocking plate 5 and the first section of cavity 161;
s9: the left cable 8 and the right cable 8 are connected in a butt joint mode;
s10: the male shell 7 and the female shell 4 are connected through the connecting buckle 6, and a closed cavity is formed inside the connecting surface of the male shell 7 and the female shell 4 along with the compression of the male shell 7 and the female shell 4.
In conclusion, the pressure-resistant waterproof connecting structure of the cable can realize the quick connection of the cable connector, has small volume, light weight and high reliability, and can completely meet the use condition of the standard requirement of the original cable in the water environment.
The invention comprises a male shell 7 and a female shell 4, a sealing ring 10 and a connecting buckle 6 with threads are arranged between the two shells, sealant 12 is filled in the male shell 7 and the female shell 4, two sealing sleeves 3 are respectively arranged on the outer sides of the male shell 7 and the female shell 4, and the sealing effect is realized by locking a partition plate 2 and a sealing buckle 1.
Further, the sealing ring 10 in the middle, the sealing glue 12 in the shell and the sealing sleeves 3 on the two sides realize the sealing of the cable joint. The sealing connection mode effectively achieves the insulation and water-proof effects of the cable joint, and effectively prevents water and oil stains from being immersed.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a withstand voltage waterproof connection structure of cable which characterized in that: comprises a sealing buckle (1), a female head shell (4), an insulating blocking plate (5), a connecting buckle (6), a male head shell (7), a sealing glue (12) and a sealing structure (13);
the inner parts of the female head shell (4) and the male head shell (7) are communicated shell cavities (16), and the connecting ends of the female head shell (4) and the male head shell (7) are fixed through connecting buckles (6);
cables (8) are butted in a shell cavity (16) formed after the female head shell (4) and the male head shell (7) are connected, and the insulating blocking plate (5) is arranged at the butted position of the cables (8) in the shell cavity (16) so as to fix the cables (8) on the left side and the right side;
the sealant (12) is filled in a gap between the inner wall of the shell cavity (16) and the cable (8);
the female head shell (4) and the other end portion, opposite to the connecting end, of the male head shell (7) are provided with a sealing structure (13), and the sealing structure (13) is fastened to the other end portion of the female head shell (4) or the other end portion of the male head shell (7) through a sealing buckle (1).
2. A pressure-resistant waterproof connecting structure of a cable according to claim 1, characterized in that: the sealing structure (13) comprises a partition plate (2) and two sealing sleeves (3);
the partition plate (2) and the sealing sleeves (3) are of annular structures, the cross sections of the partition plate and the sealing sleeves are triangular, the sealing sleeves (3) are arranged side by side, and the partition plate (2) is arranged outside the sealing sleeves (3) and jointly forms an annular structure with a trapezoidal cross section.
3. A pressure-resistant waterproof connecting structure of a cable according to claim 1, characterized in that:
the inner part of the shell cavity (16) is a symmetrical cavity, and a middle butt joint cavity (161), a middle round platform cavity (162) and an end part cavity (163) are sequentially arranged from the middle to two sides;
the cavity at the butt joint of the inner part of the shell cavity (16) is a middle butt joint cavity (161), and the middle butt joint cavity (161) is used for accommodating the insulating plug board (5); the middle butt joint cavity (161) and the end part cavity (163) are both cylindrical cavities, one side of the long side of the middle circular truncated cone cavity (162) is communicated with the middle butt joint cavity (161), and one side of the short side of the middle circular truncated cone cavity (162) is communicated with the end part cavity (163);
the other ends of the female head shell (4) and the male head shell (7) are contracted inwards to form a shell boss (14); an end circular truncated cone cavity (15) is formed in the center of the end of the shell boss (14), and the end circular truncated cone cavity (15) is communicated with the third section cavity (163);
the center of the sealing buckle (1) is provided with two communicated cylindrical cavities, namely a buckle first cavity (17) and a buckle second cavity (18); the joint of the two cavities forms an annular table top, and the right angle of the annular table top is provided with the end circular truncated cone cavity (15);
the joints between the cavities are all in arc transition.
4. A pressure-resistant waterproof connecting structure of a cable according to claim 1, characterized in that: and a sealing ring (10) is arranged on the connecting end surface of the female head shell (4) and the male head shell (7).
5. A pressure-resistant waterproof connecting structure of a cable according to claim 3, characterized in that: the end circular truncated cone cavity (15) of the female head shell (4) or the male head shell (7) is opposite to the opening direction of the end circular truncated cone cavity (15) of the sealing buckle (1), the sealing structure (13) is sleeved on the cable (8) and located between the two end circular truncated cone cavities (15) with opposite openings.
6. A pressure-resistant waterproof connecting structure of a cable according to claim 3, characterized in that: the sealing buckle (1) is sleeved on the cable (8), threads are arranged inside the buckle second cavity (18) and outside the shell boss (14), and the sealing buckle (1) is connected with the shell boss (14) through the threads.
7. A pressure-resistant waterproof connecting structure of a cable according to claim 1, characterized in that: the link of public first shell (7) is equipped with the tight boss in top (19), the link of female first shell (4) is equipped with screw thread boss (20), connector link (6) are the loop configuration, and the cross section is the L type, connector link (6) cover is located on the tight boss in top (19) of public first shell (7), connector link (6) inboard is equipped with the screw thread, with the screw thread accordant connection that screw thread boss (20) outside was equipped with.
8. A pressure-resistant waterproof connecting structure of a cable according to claim 1, characterized in that: the insulating plug plate (5) is a solid cylinder, and a concentric annular gap structure is axially arranged on the insulating plug plate; or a plurality of cylinder through holes are arranged in the axial direction of the solid cylinder for the cable (8) to pass through.
9. A pressure-resistant waterproof connecting structure of a cable according to claim 1, characterized in that: the left side cable (8) is arranged inside the female head shell (4), the right side cable (8) is arranged inside the male head shell (7), and the left side cable (8) and the right side cable (8) are respectively arranged in the gaps of the two butted insulating blocking plates (5).
10. A connecting method of a pressure-resistant waterproof connecting structure of a cable according to any one of claims 1 to 9, characterized in that: comprises the following steps;
s1: the cable (8) on the left side is inserted into the sealing buckle (1) and the sealing structure (13) from the left side until penetrating out of the right side of the female head shell (4), and a certain length is reserved for connecting with the cable (8) on the right side;
s2: the sealing buckle (1) is fixed with the female head shell (4) from the left side to the right side, and along with the fact that the sealing buckle (1) is screwed rightwards, the sealing buckle (1), the female head shell (4) and the left cable (81) slowly extrude the sealing structure (13) in a three-dimensional space, so that gaps among the sealing structure (13), the female head shell (4) and the left cable (8) are gradually reduced and fastened;
s3: filling a shell cavity (16) in the female head shell (4) with the sealant (12);
s4: inserting the cable (8) on the left side into the edge blocking plate (5) on the left side, inserting the insulating blocking plate (5) into the female head shell (4) from the right side to the left side, and ensuring the stability of the cable (8) on the left side by interference fit of the outer side of the insulating blocking plate (5) and the first section of cavity (161);
s5: inserting the cable (8) on the right side to be connected into the other sealing buckle (1) and the sealing structure (13) from the right side until the cable penetrates out of the left side of the male shell (7), and meanwhile, reserving a certain length so as to be connected with the cable (8) on the left side;
s6: the sealing buckle (1) is fixed with the male head shell (7) from the right side to the left side, and along with the fact that the sealing buckle (1) is screwed leftwards, the sealing buckle (1), the male head shell (7) and the right cable (82) slowly extrude the sealing structure (13) in a three-dimensional space, so that gaps among the sealing structure (13), the male head shell (7) and the right cable (8) are gradually reduced and fastened;
s7: filling a shell cavity (16) in the male shell (7) with the sealant (12);
s8: inserting the cable (8) on the right side into the edge blocking plate (5) on the right side, inserting the insulating blocking plate (5) into the male shell (7) from the left side to the right side, and ensuring the stability of the cable (8) on the right side by interference fit of the outer side of the insulating blocking plate (5) and the first section of cavity (161);
s9: the cable (8) on the left side and the cable (8) on the right side are connected in a butt joint mode;
s10: the male head shell (7) is connected with the female head shell (4) through the connecting buckle (6), and a closed cavity is formed inside the connecting surface of the male head shell (7) and the female head shell (4) along with the compression of the male head shell (7) and the female head shell (4).
CN202010766423.XA 2020-08-03 2020-08-03 Pressure-resistant waterproof connecting structure and method for cables Active CN112117586B (en)

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CN114243628A (en) * 2021-11-19 2022-03-25 国网山东省电力公司日照供电公司 Auxiliary sealing structure for high-voltage-resistant cable connector

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CN114243628B (en) * 2021-11-19 2024-02-23 国网山东省电力公司日照供电公司 High-voltage-resistant cable joint auxiliary sealing structure

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