Polytetrafluoroethylene thermal shrinkage sealing cap ventilation assembly for cable

Abstract

The utility model discloses a polytetrafluoroethylene thermal shrinkage sealing cap ventilation assembly for a cable, which comprises a polyolefin sealing cap main body, the polyolefin sealing cap main body is provided with a front straight pipe part and a rear taper pipe part, and the rear taper pipe part is provided with a pipe orifice end part; the ventilation hole channel is provided with an outer sinking groove part located at the front end and a through inner sinking hole part located in the center of the outer sinking groove part; the polytetrafluoroethylene waterproof breathable film is thermally welded to the outer sinking groove part; a plurality of reinforcing protrusions are arranged on the inner wall of the rear taper pipe part. According to the utility model, the heat-shrinkable polyolefin sealing cap main body wraps the end part of the cable, and then the polytetrafluoroethylene waterproof and breathable film is welded at the end part of the pipe orifice, so that the waterproof and breathable effects are realized, the internal wire harness is well protected, the installation is convenient, the sealing effect is good, the cost is low, and the applicability is strong.

Description

Technical Field

[0001] The utility model belongs to the technical field of polytetrafluoroethylene sealing caps, in particular to a polytetrafluoroethylene heat shrinkable sealing cap venting component for cables. Background Art

[0002] During cable production, transportation, and storage, cable ends require sealing and waterproofing to ensure both waterproofing and pressure relief. Traditionally, this has been done with simple wrapping, resulting in poor waterproofing and breathability. Using waterproof vent caps is not only cumbersome to install, requiring a corresponding bottom shell, but also requires a certain pressure to release pressure, making them less practical than conventional vent caps.

[0003] Therefore, there is an urgent need for a part that is easy to use and can ensure the sealing, waterproofing and breathability of the cable end. Utility Model Content

[0004] In view of this, the technical problem to be solved by the present invention is to provide a polytetrafluoroethylene heat shrinkable cap breathable assembly for cables, which is used to avoid the trouble of simple covering of the cable ends in the past, which has poor waterproof sealing and breathability.

[0005] In order to solve the above technical problems, the utility model discloses a polytetrafluoroethylene heat shrinkable cap venting assembly for cables, comprising:

[0006] The polyolefin sealing cap body comprises a front straight tube portion and a rear tapered tube portion, wherein the rear tapered tube portion comprises a tube orifice end portion;

[0007] A ventilation hole is provided at the end of the pipe mouth, and the ventilation hole comprises an outer sinking groove portion at the front end and an inner sinking hole portion located in the center of the outer sinking groove portion and passing through;

[0008] PTFE waterproof and breathable membrane heat-welded to the outer sink;

[0009] Among them, a plurality of reinforcing protrusions are provided on the inner wall of the rear cone tube.

[0010] According to one embodiment of the present invention, the thickness of the polytetrafluoroethylene waterproof and breathable membrane is 0.4 mm, the air permeability is ≥50 ml / cm², and the water pressure resistance is ≥50 KPa.

[0011] According to one embodiment of the present invention, the diameter ratio of the outer sinking groove portion and the inner sinking hole portion is 3.5:1.

[0012] According to one embodiment of the present invention, a circle of epoxy sealing layer is adhered to the inner wall edge of the front straight tube portion, and the length of the epoxy sealing layer is 4-10 mm.

[0013] Compared with the prior art, the present invention can achieve the following technical effects:

[0014] The cable end is covered with a heat-shrinkable polyolefin cap body, and then a polytetrafluoroethylene waterproof and breathable membrane is welded to the end of the pipe mouth to achieve a waterproof and breathable effect, thereby providing good protection for the internal wiring harness. It is easy to install, has a good sealing effect, is low in cost, and has strong applicability.

[0015] Of course, any product implementing the present utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of a polytetrafluoroethylene heat shrinkable cap vent assembly for a cable according to an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 A partial schematic diagram of .

[0019] Figure ID

[0020] The polyolefin sealing cap body 10 , the front straight tube portion 11 , the rear tapered tube portion 12 , the tube end portion 13 , the air vent 20 , the outer sinking groove portion 21 , the inner sinking hole portion 22 , the polytetrafluoroethylene waterproof breathable membrane 30 , and the epoxy sealing layer 40 . DETAILED DESCRIPTION

[0021] The following will describe the implementation of the present invention in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a polytetrafluoroethylene heat shrinkable cap vent assembly for a cable according to an embodiment of the present utility model; Figure 2 yes Figure 1 A partial schematic diagram of .

[0023] As shown in the figure, a polytetrafluoroethylene heat shrinkable sealing cap breathable assembly for cables includes: a polyolefin sealing cap body 10, the polyolefin sealing cap body 10 has a front straight tube portion 11 and a rear tapered tube portion 12, the rear tapered tube portion 12 has a pipe mouth end portion 13; a breathable channel 20 opened at the pipe mouth end portion 13, the breathable channel 20 has an outer sinking groove portion 21 located at the front end and an inner sinking hole portion 22 located in the center of the outer sinking groove portion 21 and passing through; a polytetrafluoroethylene waterproof breathable membrane 30 heat-welded to the outer sinking groove portion 21; wherein, a plurality of reinforcing protrusions are provided on the inner wall of the rear tapered tube portion 12.

[0024] In one embodiment of the present invention, the polyolefin sealing cap body 10 is a heat shrink tubing that can be quickly heat-sealed by aligning with a hot gun, achieving the function of sealed packaging. The polyolefin sealing cap body 10 is divided into a front straight tube portion 11 and a rear tapered tube portion 12. The front straight tube portion 11 is sleeved with the cable end, and the rear tapered tube portion 12 gradually decreases in diameter to form a tube end 13. A ventilation channel 20 is provided in the center of the tube end 13. The ventilation channel 20 is designed as a countersunk hole and consists of an outer sinking groove portion 21 and an inner sinking hole portion 22. The ventilation channel is formed by welding the polytetrafluoroethylene waterproof and breathable membrane 30, which is simple to use and has good waterproof and breathable effects.

[0025] In addition, a plurality of reinforcing protrusions are provided on the inner wall of the rear cone portion 12 to increase the strength and enhance the anti-deformation capability.

[0026] In a preferred embodiment, the polytetrafluoroethylene waterproof breathable membrane 30 has a thickness of 0.4 mm, an air permeability of ≥50 ml / cm², a water pressure resistance of ≥50 kPa, and a strength of ≥15 N after heat welding with the heat shrink cap material.

[0027] The diameter ratio of the outer sinking groove portion 21 and the inner sinking hole portion 22 of the utility model is 3.5:1, which ensures stable installation and proper air permeability.

[0028] In addition, a circle of epoxy sealing layer 40 is adhered to the inner wall edge of the front straight tube portion 11, and the length is 4-10 mm, which can improve the edge sealing effect after heat shrinkage.

[0029] To sum up, the utility model covers the cable end with a heat-shrinkable polyolefin cap body 10, and then welds a polytetrafluoroethylene waterproof and breathable membrane 30 at the end of the pipe mouth to achieve a waterproof and breathable effect, thereby providing good protection for the internal wiring harness, easy installation, good sealing effect, low cost, and strong applicability.

[0030] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A polytetrafluoroethylene heat shrinkable cap vent assembly for cables, characterized in that: include: A polyolefin sealing cap body, the polyolefin sealing cap body comprising a front straight tube portion and a rear tapered tube portion, the rear tapered tube portion having a tube orifice end portion; A ventilation channel is provided at the end of the pipe orifice, wherein the ventilation channel comprises an outer sinking groove portion at the front end and an inner sinking hole portion located in the center of the outer sinking groove portion and passing through the inner sinking hole portion; A polytetrafluoroethylene waterproof and breathable membrane heat-welded to the outer sink portion; Wherein, a plurality of reinforcing protrusions are provided on the inner wall of the rear cone tube portion.

2. The polytetrafluoroethylene heat shrinkable cap vent assembly for cables according to claim 1, characterized in that: The thickness of the polytetrafluoroethylene waterproof and breathable membrane is 0.4mm, the air permeability is ≥50ml / cm², and the water pressure resistance is ≥50Kpa.

3. The polytetrafluoroethylene heat shrinkable cap vent assembly for cables according to claim 1, characterized in that: The diameter ratio of the outer sinking groove portion to the inner sinking hole portion is 3.5:

1.

4. The polytetrafluoroethylene heat shrinkable cap vent assembly for cables according to claim 1, characterized in that: A circle of epoxy sealing glue layer is adhered to the inner wall edge of the front straight tube portion, and the length is 4-10 mm.

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