Damp-proof cable joint auxiliary assembly

Abstract

The utility model provides a moisture-proof cable joint auxiliary assembly, and the assembly is characterized in that two cable pressure heads are arranged and are respectively arranged at the positions, close to a cable joint, of two cables in a sleeving manner; the number of the compression nuts is two, and the compression nuts are installed on the cable pressing head so as to apply inward pressing force to the cable pressing head. The male joint sleeves a cable joint at the end part of one of the cables; the female joint sleeves a cable joint at the end part of the other cable and is in sealed connection with the male joint; the two pressing rings are arranged at the positions, close to the cable connectors, of the two cables respectively in a sleeving mode and connected with the male connector and the female connector in a one-to-one corresponding and inserted mode. The number of the cylindrical waterproof films is two. According to the invention, a plurality of fixing parts and a waterproof film are used to realize sealing of cable joints, and a moisture-proof purpose under an environmental condition with a large temperature difference is realized; and the overall installation is simple and fast, repeated use can be achieved, and the installation cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of cable installation, and in particular relates to a moisture-proof cable joint auxiliary component. Background Art

[0002] The Chinese patent application number CN201420261629.7 discloses a moisture-proof protective device for underground cable joints, which can prevent moisture from entering, thereby avoiding insulation breakdown and ensuring the normal and safe operation of the cable. However, the patent still has some problems in use, as follows:

[0003] On the one hand, when installing the protective device, it is necessary to first wrap the sealing material layer at the buried cable joint, then wrap the sealing material layer with a high-strength plastic moisture-proof layer, and finally use an elastic fastening device to compact and seal the two ends of the high-strength plastic moisture-proof layer. The sealing material layer is a polyurethane foaming agent, which needs to be foamed on site during installation. Therefore, the high-strength plastic moisture-proof layer must be wrapped before the foaming is completed, otherwise it will cause the outward expansion force to be weakened, so the operation requirements are relatively high.

[0004] On the other hand, after the foaming agent is completed, it will completely wrap the joint part. If the cable needs to be repaired or replaced, the foaming material must be completely removed and re-foamed and wrapped. In addition, the high-strength plastic moisture-proof layer needs to be wrapped in multiple layers. In order to achieve moisture-proof, it must be sealed at the end by gluing. Therefore, it needs to be destroyed and removed before the cable can be replaced. In other words, except for the elastic fastening device, the rest of the materials must be replaced, which greatly increases the material cost. Summary of the invention

[0005] The object of the present invention is to provide a moisture-proof cable joint auxiliary component which is easy to install and can be reused.

[0006] To achieve the above object, the present invention provides the following technical solution: a moisture-proof cable connector auxiliary component, comprising:

[0007] Two cable pressure heads are provided and are respectively sleeved on the two cables near the cable joints;

[0008] Two compression nuts are provided and are respectively mounted on the cable pressing head to apply an inward compression force to the cable pressing head;

[0009] A male connector is mounted on a cable connector at the end of one of the cables;

[0010] A female connector, which is sleeved on the cable connector at the end of the other cable and is sealed and connected to the male connector;

[0011] Two pressure rings are provided and are respectively sleeved on the two cables near the cable connectors and are plugged into the male connector and the female connector in a one-to-one correspondence;

[0012] There are two cylindrical waterproof membranes, one end of which is pressed against the outer surface of one of the cables by one of the cable pressing heads, and the other end is pressed against the male connector by one of the pressing rings; one end of the other cylindrical waterproof membrane is pressed against the outer surface of another cable by another cable pressing head, and the other end is pressed against the female connector by another pressing ring.

[0013] Furthermore, the cable pressing head has a torsion ring and a plurality of pressing claws arranged at one end of the torsion ring and evenly distributed along the circumferential direction. The surface of the pressing claw is provided with an external thread matching the clamping nut and can produce radial deformation under the action of external force.

[0014] Further, the male connector has a male plug-in portion and an external threaded portion coaxially connected to the male plug-in portion, and the end surface of the male plug-in portion is provided with a male slot;

[0015] The female connector comprises a female plug-in portion and an internal thread portion coaxially connected to the female plug-in portion, and the end surface of the female plug-in portion is provided with a female slot;

[0016] The pressure ring has an insert ring, which can be matched and inserted with the male head slot and the female head slot and can seal and press the end of the cylindrical waterproof membrane into the male head slot and the female head slot during the insertion process.

[0017] Furthermore, the male connector also has a male flange portion located between the male plug-in portion and the external threaded portion;

[0018] The female connector also has a female flange portion located between the female plug-in portion and the internal thread portion;

[0019] The pressure ring also has a pressure ring flange part, and the pressure ring flange part can be connected to the male flange part and the female flange part respectively through a connecting piece.

[0020] Furthermore, the connecting piece is a threaded connecting piece and a nut.

[0021] Furthermore, one end of the cylindrical waterproof membrane fixed by the cable pressure head extends outward and is wrapped with the clamping nut by the elastic sleeve after being folded.

[0022] Furthermore, the elastic sleeve is a rubber ring.

[0023] Furthermore, the cylindrical waterproof membrane is a heat shrinkable membrane.

[0024] Furthermore, the cable pressure head, the compression nut, the male connector, the female connector and the pressure ring are all injection molded parts.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the present invention utilizes multiple fixing components and waterproof membranes to achieve sealing of cable connections, thereby achieving the purpose of moisture-proofing under environmental conditions with large temperature differences; the overall installation is simple and quick, and can be reused, reducing installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural stereogram of a preferred embodiment of the present invention;

[0027] Figure 2 for Figure 1 A top view of the structure in the illustrated embodiment;

[0028] Figure 3 for Figure 2 Sectional view along AA direction;

[0029] Figure 4 for Figure 1 A structural stereogram of a cable pressure head in the illustrated embodiment;

[0030] Figure 5 for Figure 1 A structural stereogram of the male connector in the illustrated embodiment;

[0031] Figure 6 for Figure 1 A structural stereogram of the pressure ring in the illustrated embodiment;

[0032] Figure 7 for Figure 1 A structural stereogram of the female connector in the illustrated embodiment.

[0033] Attached photos

[0034] 1. Cable pressure head; 1.1. Twist ring; 1.2 Pressure claw; 2. Pressure nut; 3. Male connector; 3.1. Male plug-in part; 3.2. External thread part; 3.3. Male flange part; 3.4. Male slot; 4. Pressure ring; 4.1. Plug ring; 4.2. Pressure ring flange part; 5. Cylindrical waterproof membrane; 6. Female connector; 6.1. Female plug-in part; 6.2. Internal thread part; 6.3. Female flange part; 6.4. Female slot; 7. Threaded connector; 8. Nut; 9. Elastic sleeve; 100. Cable; 200. Cable connector. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings. 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.

[0036] like Figures 1 to 7 As shown, this embodiment discloses a moisture-proof cable joint 200 auxiliary component, which is applied to moisture-proof sealing at a cable joint 200 where two cables 100 are connected to each other.

[0037] The auxiliary component includes a cable pressure head 1, a compression nut 2, a male connector 3, a female connector 6, a pressure ring 4 and a cylindrical waterproof membrane 5.

[0038] Two cable pressure heads 1 are provided, and are respectively sleeved on the positions of the two cables 100 near the cable connectors 200. Specifically, Figure 4 As shown, the cable pressure head 1 has a torsion ring 1.1 and 8 pressure claws 1.2 arranged at one end of the torsion ring 1.1 and evenly distributed along the circumferential direction. The surface of the pressure claw 1.2 is provided with an external thread matching the clamping nut 2 and can produce radial deformation under the action of external force. The outer circumferential surface of the torsion ring 1.1 is provided with anti-slip grooves for providing friction when the clamping nut 2 is screwed.

[0039] Similarly, two compression nuts 2 are provided and are respectively installed on the cable pressure head 1 to apply an inward compression force to the cable pressure head 1. It can be seen that when the compression nut 2 is screwed onto the pressure claw 1.2, the pressure claw 1.2 is squeezed to make it close to the outer skin of the cable 100. After the compression nut 2 is screwed off, the pressure claw 1.2 is separated from the outer skin of the cable 100 under its own restoring force.

[0040] The male connector 3 is sleeved on the cable connector 200 at the end of one of the cables 100. Specifically, Figure 5 As shown, the male connector 3 comprises a male plug-in portion 3.1 and an external threaded portion 3.2 coaxially connected to the male plug-in portion 3.1, and a male slot 3.4 is provided on the end surface of the male plug-in portion 3.1.

[0041] The female connector 6 is sleeved on the cable connector 200 at the end of another cable 100 and is sealed and connected to the male connector 3. Specifically, Figure 7 As shown, the female connector 6 has a female plug-in portion 6.1 and an internal thread portion 6.2 coaxially connected to the female plug-in portion 6.1, and a female slot 6.4 is provided on the end surface of the female plug-in portion 6.1. Obviously, the difference between the male connector 3 and the female connector 6 is that one is provided with an external thread portion 3.2 and the other is provided with an internal thread portion 6.2, so as to achieve the connection between the two.

[0042] Two pressure rings 4 are also provided, and are respectively sleeved on the two cables 100 near the cable connector 200, and are plugged into the male connector 3 and the female connector 6 in a one-to-one correspondence. Figure 6As shown, the pressure ring 4 has an insert ring 4.1, which can be matched and plugged with the male socket 3.4 and the female socket 6.4 and the end of the cylindrical waterproof membrane 5 is sealed and pressed into the male socket 3.4 and the female socket 6.4 during the plugging process.

[0043] Two cylindrical waterproof membranes 5 are also provided, one end of one of the cylindrical waterproof membranes 5 is pressed against the outer surface of one of the cables 100 by one of the cable pressing heads 1, and the other end is pressed against the male connector 3 by one of the pressing rings 4, and one end of the other cylindrical waterproof membrane 5 is pressed against the outer surface of another cable 100 by another cable pressing head 1, and the other end is pressed against the female connector 6 by another pressing ring 4.

[0044] The connection between the pressure ring 4 and the male connector 3 and the female connector 6 is realized by a connector. Specifically, the male connector 3 also has a male flange portion 3.3 located between the male plug-in portion 3.1 and the external thread portion 3.2. Similarly, the female connector 6 also has a female flange portion 6.3 located between the female plug-in portion 6.1 and the internal thread portion 6.2. The pressure ring 4 also has a pressure ring flange portion 4.2, and the pressure ring flange portion 4.2 can be connected to the male flange portion 3.3 and the female flange portion 6.3 respectively through a connector. The flange portions of the male connector 3, the female connector 6 and the pressure ring 4 are all provided with a plurality of connection holes that are evenly distributed and correspond to each other in the circumferential direction. The connector is a threaded connector 7 and a nut 8. When the threaded connector 7 is a double-headed screw, it passes through the two pressure ring flange portions 4.2, the male flange portion 3.3 and the female flange portion 6.3 and is fixed at both ends with nuts 8. When the threaded connector 7 is a stud, the male flange part 3.3 and the compression ring flange part 4.2 on one side are connected by a stud and two nuts 8, and the female flange part 6.3 and the compression ring flange part 4.2 on one side are connected by a stud and two nuts 8.

[0045] As a preferred example, in order to improve the waterproof and moisture-proof ability of the end, the end of the cylindrical waterproof membrane 5 fixed by the cable pressure head 1 extends outward and is folded and wrapped with the clamping nut 2 by the elastic sleeve 9. As a preferred example, the elastic sleeve is a rubber ring.

[0046] As a preferred example, the cylindrical waterproof membrane 5 is a heat shrinkable membrane, one end of which contacts the outer skin of the cable 100 and shrinks after heating to wrap around the outer skin of the cable 100, while the other end is not heated and has a larger diameter, and is pressed into the corresponding slot by the plug-in part of the pressure ring 4 to form a seal.

[0047] As a preferred example, the cable pressure head 1, the clamping nut 2, the male connector 3, the female connector 6 and the pressure ring 4 are all injection molded parts, which are not only anti-corrosion but also light in weight, low in cost and can be repeatedly used.

[0048] When using the auxiliary component, first put the cable pressure head 1 and the tightening nut 2 on the cable 100 respectively, then connect the cable connector 200 to the end of the cable 100, then fix one end of the cylindrical waterproof membrane 5 to the male connector 3 and the female connector 6 through the pressure ring 4 and use the connecting piece to fix the pressure ring 4 to the male connector 3 and the female connector 6, then put them on the two cables 100 respectively, and then thread the male connector 3 and the female connector 6.

[0049] Heat the area 3-5 cm away from the other end of the cylindrical waterproof membrane 5 to shrink it and wrap the outer skin of the cable 100. At this time, move the cable pressing head 1 to the end of the shrunk cylindrical waterproof membrane 5, and install the clamping nut 2 on the cable pressing head 1 to tightly press the shrunk cylindrical waterproof membrane 5, and fold the unheated part of the end to wrap the clamping nut 2, and finally fix it with an elastic sleeve.

[0050] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0051] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation of the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0052] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A moisture-proof cable connector (200) auxiliary component, characterized in that: include: Two cable pressing heads (1) are provided and are respectively sleeved on two cables (100) at positions close to the cable joints (200); Two compression nuts (2) are provided and are respectively mounted on the cable pressing head (1) to apply an inward compression force to the cable pressing head (1); A male connector (3) sleeved on a cable connector (200) at the end of one of the cables (100); A female connector (6) which is sleeved on a cable connector (200) at the end of another cable (100) and is sealed and connected to the male connector (3); Two pressure rings (4) are provided and are respectively sleeved on the two cables (100) at positions close to the cable connectors (200), and are plugged into the male connector (3) and the female connector (6) in a one-to-one correspondence; Two cylindrical waterproof membranes (5) are provided, wherein one end of one cylindrical waterproof membrane (5) is pressed against the outer surface of one cable (100) by one cable pressing head (1), and the other end is pressed against the male connector (3) by one pressing ring (4); and one end of the other cylindrical waterproof membrane (5) is pressed against the outer surface of another cable (100) by another cable pressing head (1), and the other end is pressed against the female connector (6) by another pressing ring (4).

2. The moisture-proof cable connector (200) auxiliary component according to claim 1, characterized in that: The cable pressing head (1) comprises a torsion ring (1.1) and a plurality of pressing claws (1.2) arranged at one end of the torsion ring (1.1) and evenly distributed in a circumferential direction; the surface of the pressing claws (1.2) is provided with external threads matching the clamping nut (2) and is capable of generating radial deformation under the action of an external force.

3. The moisture-proof cable connector (200) auxiliary component according to claim 1, characterized in that: The male connector (3) comprises a male plug-in portion (3.1) and an external threaded portion (3.2) coaxially connected to the male plug-in portion (3.1), and a male slot (3.4) is provided on the end surface of the male plug-in portion (3.1); The female connector (6) comprises a female plug-in portion (6.1) and an internal thread portion (6.2) coaxially connected to the female plug-in portion (6.1), and a female slot (6.4) is provided on the end surface of the female plug-in portion (6.1); The pressure ring (4) has an insert ring (4.1), which can be matched and inserted with the male slot (3.4) and the female slot (6.4) and can seal and press the end of the cylindrical waterproof membrane (5) into the male slot (3.4) and the female slot (6.4) during the insertion process.

4. The moisture-proof cable connector (200) auxiliary component according to claim 3, characterized in that: The male connector (3) further comprises a male flange portion (3.3) located between the male plug-in portion (3.1) and the external thread portion (3.2); The female connector (6) further comprises a female flange portion (6.3) located between the female plug-in portion (6.1) and the internal thread portion (6.2); The pressure ring (4) also has a pressure ring flange part (4.2), and the pressure ring flange part (4.2) can be connected to the male flange part (3.3) and the female flange part (6.3) respectively through connecting pieces.

5. The moisture-proof cable connector (200) auxiliary component according to claim 4, characterized in that: The connecting parts are threaded connecting parts (7) and nuts (8).

6. The moisture-proof cable connector (200) auxiliary component according to claim 1, characterized in that: The end of the cylindrical waterproof membrane (5) fixed by the cable pressure head (1) extends outward and is wrapped around the clamping nut (2) by the elastic sleeve (9) after being folded.

7. The moisture-proof cable connector (200) auxiliary component according to claim 6, characterized in that: The elastic sleeve is a rubber ring.

8. The moisture-proof cable connector (200) auxiliary component according to claim 1, characterized in that: The cylindrical waterproof membrane (5) is a heat shrinkable membrane.

9. The moisture-proof cable connector (200) auxiliary component according to claim 1, characterized in that: The cable pressure head (1), the compression nut (2), the male connector (3), the female connector (6) and the pressure ring (4) are all injection molded parts.

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