Photovoltaic waterproof cable connector

Abstract

The utility model relates to the technical field of cable connection, in particular to a photovoltaic waterproof cable connector, which comprises a middle pipe, an end pipe and a dense pressing block, and blocking parts are fixed at two ends in the middle pipe; the end pipe at least comprises a gradually-shrinking section and a connecting section used for being connected with the end of the middle pipe, and the inner diameter of the gradually-shrinking section is gradually shrunk from the joint of the gradually-shrinking section and the connecting section to the other end of the gradually-shrinking section. The outer wall of the dense pressing block is tightly attached to the inner wall of the gradually-shrinking section, the dense pressing block is defined by at least two dense pressing units, and when the end pipe gets close to the middle pipe in the axial direction, the blocking part abuts against the dense pressing block so that the dense pressing units can get close to each other and be tightly attached to the periphery of the waterproof cable. The waterproof cable penetrates through the end pipe and extends into the middle pipe, the dense pressing unit is inserted into the gradually-shrinking section, the end pipe is screwed on the middle pipe so that the dense pressing block can be tightly pressed between the gradually-shrinking section and the waterproof cable through the blocking part, the structure is simple, and assembling is rapid.

Description

Technical Field

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

[0002] Photovoltaic waterproof cables are cables designed specifically for solar photovoltaic power generation systems. Their joints need to be tightly sealed to ensure that the internal electrical connection points remain dry and insulated when rain and moisture invade, to avoid short circuits, corrosion and other electrical faults. Existing waterproof cable connectors generally use multiple layers of sealing rings or gaskets to achieve waterproofing, which requires the design of complex sealing mechanisms. The sealing rings are prone to deviating from the installation position, and generally require multiple layers of sealing structures to ensure good sealing, which is more troublesome to assemble. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] The utility model aims to provide a photovoltaic waterproof cable connector, which can be quickly assembled and has good waterproof sealing performance.

[0005] 2. Technical Solution

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model proposes a photovoltaic waterproof cable connector, comprising

[0008] An intermediate tube, wherein blocking parts are fixed at both ends of the intermediate tube;

[0009] The end pipe includes at least a tapered section and a connecting section for connecting with the end of the intermediate pipe, and the inner diameter of the tapered section gradually decreases from the intersection with the connecting section to the other end;

[0010] A sealing block, the outer wall of which is tightly fitted with the inner wall of the tapered section, the sealing block is surrounded by at least two sealing units, and when the end tube approaches the middle tube axially, the blocking portion abuts against the sealing block to make the sealing units approach each other and tightly fit the outer periphery of the waterproof cable.

[0011] Furthermore, the outer walls at both ends of the intermediate tube are provided with external threads, and the inner wall of the connecting section is provided with internal threads that match the external threads of the outer walls at both ends of the intermediate tube.

[0012] Furthermore, a plurality of ridges are evenly distributed on the outer wall of the intermediate tube in the circumferential direction.

[0013] Furthermore, the blocking portion is an annular piece or a protrusion fixed at both ends of the middle tube, and the inner diameter of the annular piece is larger than the diameter of the waterproof cable.

[0014] Furthermore, the terminal tube also includes an introduction section fixed to the other end of the tapered section, and the introduction section is an annular structure, and its inner diameter is larger than the outer diameter of the waterproof cable and smaller than the outer diameter of the smallest end of the sealing block.

[0015] Furthermore, the outer wall of the introduction section is provided with an external thread and is threadedly connected with a sleeve.

[0016] Furthermore, the sealing unit is made of elastic silicone material or rubber material.

[0017] Furthermore, the sealing unit includes an external connection layer and an internal pressure layer connected to the inner side of the external connection layer, the external connection layer is made of a hard material, the internal pressure layer is made of a flexible material, the outer wall of the external connection layer is in contact with the inner wall of the tapered section, and the internal pressure layers of each sealing unit are combined to form an annular structure that is interference fit with the outer wall of the waterproof cable.

[0018] 3. Beneficial Effects

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the utility model, the waterproof cable passes through the terminal tube and extends into the middle tube, the sealing unit is inserted into the tapered section, and the terminal tube is tightened on the middle tube so that the blocking part presses the sealing block between the tapered section and the waterproof cable, thereby improving the waterproof performance, the structure is simple, and the assembly is quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 yes Figure 1 A cross-sectional view of

[0023] Figure 3 It is a structural schematic diagram of a densely compressed block;

[0024] 1-middle tube; 11-blocking part; 12-convex ridge; 2-end tube; 21-tapered section; 22-connecting section; 23-introduction section; 3-closed pressing block; 31-closed pressing unit; 311-external layer; 312-internal pressing layer; 4-sleeve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] A photovoltaic waterproof cable connector, see Figure 1-3 , including an intermediate tube 1, an end tube 2, a sealing block 3 and a sleeve 4.

[0027] Both ends of the intermediate tube 1 can be connected to the end tube 2. Blocking parts 11 are fixed at both ends of the intermediate tube 1. The blocking part 11 is a ring sheet or a convex block with an inner diameter larger than the diameter of the waterproof cable. A plurality of convex ridges 12 are evenly distributed on the outer wall of the intermediate tube 1 in the circumferential direction to enhance wear resistance.

[0028] The end pipe 2 includes a tapered section 21, a connecting section 22, and an introduction section 23 fixed to the other end of the tapered section 21; wherein the connecting section 22 is connected to the end of the intermediate pipe 1, and the inner diameter of the tapered section 21 gradually decreases from the intersection with the connecting section 22 to the other end. Specifically, the connecting section 22 and the intermediate pipe 1 can be connected by a buckle, or the outer walls at both ends of the intermediate pipe 1 are provided with external threads, and the inner wall of the connecting section 22 is provided with internal threads that match the external threads of the outer walls at both ends of the intermediate pipe 1.

[0029] The outer wall of the sealing block 3 is tightly fitted with the inner wall of the tapered section 21. The sealing block 3 is formed by at least two sealing units 31, wherein the sealing units 31 are made of elastic silicone material or rubber material.

[0030] During assembly, the waterproof cable passes through the terminal tube 2 and extends into the middle tube 1, the sealing unit 31 is inserted into the tapered section 21, and the terminal tube 2 is tightened on the middle tube 1. When the terminal tube 2 approaches the middle tube 1 axially, the blocking portion 11 abuts against the sealing block 3, so that the sealing units 31 are close to each other and tightly fit to the outer periphery of the waterproof cable. The sealing block 3 is tightly fitted to the inner wall of the tapered section 21, and the sealing block 3 is tightly fitted to the outer periphery of the waterproof cable. It has good waterproof performance and is easy to assemble. It only needs to tighten the terminal tube 2.

[0031] In this embodiment, the sealing unit 31 includes an external layer 311 and an internal pressure layer 312 connected to the inner side of the external layer 311. The external layer 311 is made of a hard material, and the internal pressure layer 312 is made of a flexible material. The outer wall of the external layer 311 is in contact with the inner wall of the tapered section 21, and the internal pressure layer 312 of each sealing unit 31 is combined to form an annular structure that is interference fit with the outer wall of the waterproof cable; the external layer 311 can be quickly pressed by the blocking part 11 to improve the strength, while the internal pressure layer 312 improves the tightness of the contact with the outer wall of the waterproof cable.

[0032] In addition, the end tube 2 also includes an introduction section 23 fixed to the other end of the tapered section 21. The introduction section 23 is an annular structure, and its inner diameter is larger than the outer diameter of the waterproof cable and smaller than the outer diameter of the smallest end of the sealing block 3. The sealing block 3 is confined between the blocking portion 11 and the introduction section 23; the outer wall of the introduction section 23 is provided with an external thread and is threadedly connected with a sleeve 4, which has dustproof and protective functions.

[0033] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A photovoltaic waterproof cable connector, characterized in that: include: An intermediate tube, wherein blocking parts are fixed at both ends of the intermediate tube; The end pipe includes at least a tapered section and a connecting section for connecting with the end of the intermediate pipe, and the inner diameter of the tapered section gradually decreases from the intersection with the connecting section to the other end; A sealing block, the outer wall of which is tightly fitted with the inner wall of the tapered section, the sealing block is surrounded by at least two sealing units, and when the end tube approaches the middle tube axially, the blocking portion abuts against the sealing block to make the sealing units approach each other and tightly fit the outer periphery of the waterproof cable.

2. A photovoltaic waterproof cable connector according to claim 1, characterized in that: The outer walls at both ends of the intermediate tube are provided with external threads, and the inner wall of the connecting section is provided with internal threads that match the external threads of the outer walls at both ends of the intermediate tube.

3. A photovoltaic waterproof cable connector according to claim 2, characterized in that: The outer wall of the intermediate tube is evenly distributed with a plurality of ridges in the circumferential direction.

4. A photovoltaic waterproof cable connector according to claim 2, characterized in that: The blocking part is an annular piece or a convex block fixed at both ends of the middle tube, and the inner diameter of the annular piece is larger than the diameter of the waterproof cable.

5. A photovoltaic waterproof cable connector according to claim 1, characterized in that: The terminal pipe also includes an introduction section fixed to the other end of the tapered section. The introduction section is an annular structure, and its inner diameter is larger than the outer diameter of the waterproof cable and smaller than the outer diameter of the smallest end of the sealing block.

6. A photovoltaic waterproof cable connector according to claim 5, characterized in that: The outer wall of the introduction section is provided with an external thread and is threadedly connected with a sleeve.

7. A photovoltaic waterproof cable connector according to any one of claims 1 to 6, characterized in that: The sealing unit is made of elastic silicone material or rubber material.

8. A photovoltaic waterproof cable connector according to any one of claims 1 to 6, characterized in that: The sealing unit includes an external connection layer and an internal pressure layer connected to the inner side of the external connection layer. The external connection layer is made of a hard material, and the internal pressure layer is made of a flexible material. The outer wall of the external connection layer is in contact with the inner wall of the tapered section. The internal pressure layers of each sealing unit are combined to form an annular structure that is interference fit with the outer wall of the waterproof cable.

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