Cable connection structure

Abstract

The utility model discloses a cable connection structure which comprises an installation sleeve, the outer surface of the installation sleeve is connected with a main protection sleeve and at least two auxiliary protection sleeves, one end of the main protection sleeve far away from the installation sleeve and one end of the auxiliary protection sleeves far away from the installation sleeve are fixedly connected with conical connection pipes, and the conical connection pipes are connected with the installation sleeve. The end, away from the mounting sleeve, of the conical connecting pipe is connected with a sealing elastic sleeve through a fixing pipe. According to the utility model, through the arrangement of the limiting insertion tube and the sealing elastic sleeve, after a cable is placed, the sealing elastic sleeve can be contracted and clung to the surface of the cable inside the sealing elastic sleeve to seal the connecting end of the cable only by pulling out the limiting insertion tube, and the sealing device is suitable for cables with different thicknesses, is convenient to use, does not need to prepare additional tools, and is high in sealing success rate.

Description

Technical Field

[0001] The utility model relates to the technical field of cable connection, in particular to a cable connection structure. Background Art

[0002] When connecting cables, it is often necessary to divide the core wires in the cable into multiple strands, and then connect the core wires to the corresponding terminals respectively. At this time, since the sheath outside the core wire has been stripped off, water seepage is likely to occur at the connection point, especially for equipment working underwater. Therefore, it is necessary to form a protection on the outer layer of the cable through a connection protection structure to prevent internal water seepage and leakage.

[0003] Currently, heat shrink tubing is commonly used at the connection points of cables. The heat shrink tubing is heated to shrink and adhere closely to the surface of the cable, so that the heat shrink tubing can seal the cable surface.

[0004] However, when using heat shrink tubing, a hot air blower or heat gun is required to heat the tubing, which is inconvenient to operate and tests the operator's skills. It is also easy to cause the tubing to deform or melt, resulting in sealing failure. Utility Model Content

[0005] The utility model aims to provide a cable connection structure to solve the technical problems in the prior art of using heat shrink tubes to connect cables, which are inconvenient to operate and easy to cause the heat shrink tubes to deform or melt.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A cable connection structure includes a mounting sleeve, a main protective sleeve and at least two secondary protective sleeves connected to the outer surface of the mounting sleeve, a tapered connecting pipe fixedly connected to one end of the main protective sleeve away from the mounting sleeve and one end of the secondary protective sleeve away from the mounting sleeve, and a sealing elastic sleeve connected to the end of the tapered connecting pipe away from the mounting sleeve via a fixing pipe;

[0008] A limiting insert is inserted into the end of the sealing elastic sleeve away from the installation sleeve, and the end of the sealing elastic sleeve is supported by the limiting insert. After the limiting insert is pulled out so that the end of the sealing elastic sleeve loses its supporting force, the sealing elastic sleeve shrinks under the action of its own elastic force and clings to the cable surface inside it.

[0009] As a preferred solution of the present invention, the diameter of one end of the tapered connecting pipe close to the installation sleeve is larger than the diameter of the other end.

[0010] As a preferred embodiment of the present utility model, elastic limiting rubber sleeves are fixedly connected to the inner walls of one ends of the main protection sleeve and the auxiliary protection sleeve close to the installation sleeve. The limiting rubber sleeves are elastic, and the inner diameter of one end of the limiting rubber sleeve close to the installation sleeve is larger than that of the other end.

[0011] As a preferred embodiment of the present utility model, a limiting retaining ring is fixedly connected to the inner wall of the installation sleeve, and the limiting retaining ring is arranged on the top of the limiting rubber sleeve;

[0012] A sealing cover is arranged on the top of the installation sleeve. A threaded sleeve is fixedly connected to the bottom of the sealing cover, and the sealing cover is threadedly connected to the installation sleeve through the threaded sleeve. When the sealing cover is installed on the top of the installation sleeve, the bottom of the threaded sleeve fits against the top of the limiting retaining ring.

[0013] As a preferred embodiment of the present utility model, a sealing gasket is fixedly connected to the top end of the installation sleeve. When the sealing cover is installed on the top of the installation sleeve, the bottom end of the sealing cover closely adheres to the top of the sealing gasket.

[0014] As a preferred embodiment of the present utility model, a fixing plate is fixedly connected to the bottom of the main protection sleeve, and fixing bolts are threadedly connected to both sides of the top of the fixing plate.

[0015] The present utility model has the following beneficial effects compared with the prior art:

[0016] By providing a limiting insertion tube and a sealing elastic sleeve, after placing the cable, the limiting insertion tube only needs to be pulled out, and the sealing elastic sleeve can contract and closely adhere to the surface of the cable inside it, sealing the connection end of the cable. It is applicable to cables of different thicknesses, is convenient to use, does not require additional tools, and has a high sealing success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained by extending according to the provided drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure provided by the present utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the present utility model after opening the sealing cover;

[0020] Figure 3 It is a schematic diagram of a partial structure of the present utility model;

[0021] Figure 4 It is a structural diagram of the utility model when in use.

[0022] The numbers in the figure represent the following:

[0023] 1. Installation sleeve; 2. Main protection sleeve; 3. Secondary protection sleeve; 4. Conical connecting pipe; 5. Fixing pipe; 6. Sealing elastic sleeve; 7. Limiting insert;

[0024] 11. Limit rubber sleeve; 12. Limit retaining ring; 13. Sealing gasket; 14. Sealing cover; 15. Handle; 16. Fixing plate; 17. Fixing bolt. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1 and Figure 2 As shown, the present invention provides a cable connection structure, which mainly seals the cable through a limiting insert 7 and a sealing elastic sleeve 6.

[0027] The cable connection structure includes a mounting sleeve 1, a main protective sleeve 2 and at least two secondary protective sleeves 3 are connected to the outer surface of the mounting sleeve 1, a tapered connecting pipe 4 is fixedly connected to the end of the main protective sleeve 2 away from the mounting sleeve 1 and the end of the secondary protective sleeve 3 away from the mounting sleeve 1, and a sealing elastic sleeve 6 is connected to the end of the tapered connecting pipe 4 away from the mounting sleeve 1 through a fixing pipe 5;

[0028] A limiting insert 7 is inserted into the end of the sealing elastic sleeve 6 away from the installation sleeve 1, and the end of the sealing elastic sleeve 6 is supported by the limiting insert 7. After the limiting insert 7 is pulled out, the end of the sealing elastic sleeve 6 loses its supporting force. The sealing elastic sleeve 6 shrinks under the action of its own elastic force and clings to the cable surface inside it.

[0029] At present, heat shrink tubing is usually used to connect cables. However, when using heat shrink tubing, a hot air blower or heat gun is required to heat the heat shrink tubing, which is inconvenient to operate and tests the operator's skills. It is easy to cause the heat shrink tubing to deform or melt, resulting in sealing failure. Therefore, it is necessary to develop a cable connection structure that is easy to use.

[0030] In this embodiment, by providing a limit insertion tube 7 and a sealing elastic sleeve 6, after the cable is placed, simply pulling out the limit insertion tube 7 can cause the sealing elastic sleeve 6 to contract and closely adhere to the surface of the cable inside it, sealing the connection end of the cable. It is applicable to cables of different thicknesses, is convenient to use, does not require additional tools, and has a high sealing success rate.

[0031] During actual use: 1. The staff passes the main wire through the main protection sleeve 2, separates the two sub-wires inside the installation sleeve 1, and then passes the two sub-wires through the two auxiliary protection sleeves 3 respectively. At this time, the main wire and the two sub-wires are respectively inside the corresponding limit insertion tubes 7.

[0032] 2. After the line is stretched to an appropriate position, the staff pulls out the limit insertion tube 7 in the sealing elastic sleeve 6, then the sealing elastic sleeve 6 closely adheres to the surface of the cable under its own elastic force, thereby sealing the connection end of the cable, and thus achieving the effect of quickly sealing the connection of the cable.

[0033] As a preferred embodiment of this embodiment, as Figure 3 shown, the diameter of the conical connection tube 4 near the end of the installation sleeve 1 is larger than that of its other end. While not delaying the entry and exit of the cable through the conical connection tube 4, it can make the end of the sealing elastic sleeve 6 closely adhere to the cable.

[0034] The inner walls of one end of the main protection sleeve 2 near the installation sleeve 1 and the inner walls of one end of the auxiliary protection sleeve 3 near the installation sleeve 1 are both fixedly connected with limit rubber sleeves 11. The limit rubber sleeves 11 are elastic, and the inner diameter of one end of the limit rubber sleeve 11 near the installation sleeve 1 is larger than that of its other end. The limit rubber sleeves 11 are elastic, which is convenient for inserting cables of different sizes, and can limit and clamp the cables after the cables are inserted, and can prevent water vapor from entering the inside of the main protection sleeve 2.

[0035] In order to further improve the sealing performance of the main protection sleeve 2 and facilitate maintenance, as Figure 2 shown, a limit retaining ring 12 is fixedly connected to the inner wall of the installation sleeve 1, and the limit retaining ring 12 is arranged on the top of the limit rubber sleeve 11;

[0036] A sealing cover 14 is provided on the top of the installation sleeve 1. A threaded sleeve is fixedly connected to the bottom of the sealing cover 14. The sealing cover 14 is threadedly connected to the installation sleeve 1 through the threaded sleeve. When the sealing cover 14 is installed on the top of the installation sleeve 1, the bottom of the threaded sleeve fits against the top of the limit retaining ring 12.

[0037] A sealing gasket 13 is fixedly connected to the top end of the installation sleeve 1. When the sealing cover 14 is installed on the top of the installation sleeve 1, the bottom end of the sealing cover 14 closely adheres to the top of the sealing gasket 13.

[0038] The bottom of the threaded sleeve fits against the top of the limit retaining ring 12, and the sealing cover 14 adheres to the sealing gasket 13 at the top of the mounting sleeve 1, improving the sealing performance of the device and facilitating disassembly for cable maintenance inside.

[0039] A handle 15 is fixedly connected to the middle of the top of the sealing cover 14, and the sealing cover 14 is rotated and opened by rotating the handle 15.

[0040] A fixing plate 16 is fixedly connected to the bottom of the main protection sleeve 2, and fixing bolts 17 are threadedly connected to both sides of the top of the fixing plate 16. The whole device is fixed to the attached object by the fixing bolts 17.

[0041] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A cable connection structure, characterized in that: The invention comprises a mounting sleeve (1), a main protective sleeve (2) and at least two secondary protective sleeves (3) are connected to the outer surface of the mounting sleeve (1), a conical connecting pipe (4) is fixedly connected to one end of the main protective sleeve (2) away from the mounting sleeve (1) and one end of the secondary protective sleeve (3) away from the mounting sleeve (1), and the end of the conical connecting pipe (4) away from the mounting sleeve (1) is connected to a sealing elastic sleeve (6) via a fixing pipe (5); A limiting insert (7) is inserted into the interior of one end of the sealing elastic sleeve (6) away from the installation sleeve (1), and the end of the sealing elastic sleeve (6) is supported by the limiting insert (7). After the limiting insert (7) is pulled out and the end of the sealing elastic sleeve (6) loses its supporting force, the sealing elastic sleeve (6) shrinks under the action of its own elastic force and adheres tightly to the cable surface inside it.

2. A cable connection structure according to claim 1, characterized in that: The diameter of one end of the tapered connecting pipe (4) close to the installation sleeve (1) is larger than the diameter of the other end.

3. A cable connection structure according to claim 2, characterized in that: The inner wall of one end of the main protective sleeve (2) close to the installation sleeve (1) and the inner wall of one end of the secondary protective sleeve (3) close to the installation sleeve (1) are both fixedly connected to a limiting rubber sleeve (11); the limiting rubber sleeve (11) is elastic, and the inner diameter of the limiting rubber sleeve (11) close to the installation sleeve (1) is larger than the inner diameter of the other end.

4. A cable connection structure according to claim 3, characterized in that: The inner wall of the installation sleeve (1) is fixedly connected to a limit retaining ring (12), and the limit retaining ring (12) is arranged on the top of the limit rubber sleeve (11); A sealing cover (14) is provided on the top of the installation sleeve (1), and a threaded sleeve is fixedly connected to the bottom of the sealing cover (14). The sealing cover (14) is threadedly connected to the installation sleeve (1) through the threaded sleeve. When the sealing cover (14) is installed on the top of the installation sleeve (1), the bottom of the threaded sleeve fits with the top of the limit ring (12).

5. A cable connection structure according to claim 4, characterized in that: The top end of the installation sleeve (1) is fixedly connected to a sealing gasket (13); when the sealing cover (14) is installed on the top end of the installation sleeve (1), the bottom end of the sealing cover (14) is in close contact with the top end of the sealing gasket (13).

6. The cable connection structure according to claim 1, characterized in that: A fixing plate (16) is fixedly connected to the bottom of the main protective sleeve (2), and fixing bolts (17) are threadedly connected to both sides of the top of the fixing plate (16).

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