Waterproof and fireproof protective sleeve

Abstract

The utility model relates to a waterproof and fireproof protective sleeve, which comprises an EPDM (Ethylene-Propylene-Diene Monomer) corrugated hose and a connecting end, one end of the corrugated hose is provided with a connecting part, the connecting part is provided with an interface of a sealing structure with a lip, the connecting part is internally provided with an annular mounting groove, and two opposite surfaces of the annular mounting groove are symmetrically provided with convex parts. The rubber protective sleeve is simple and ingenious in structure, the improved rubber protective sleeve has waterproof and fireproof capabilities, and meanwhile, the oil-resistant layer is arranged in the annular mounting groove, so that the service life of a product can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of rubber products technology, specifically to a waterproof and fireproof protective sleeve. Background Technology

[0002] A flexible protective sleeve is installed on the tailgate support rod of a car. Due to the fact that the support rod has a turning end, the corrugated hose in the prior art is not easy to install. In view of the existing technical problems, the applicant designed the "Waterproof Protective Sleeve Combination Product Structure" last year as a technical improvement, and hereby applies for this invention. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a waterproof and fireproof protective cover, which can improve upon the above deficiencies.

[0004] This utility model relates to a waterproof and fireproof protective sleeve, including an EPDM corrugated hose and a connecting end. One end of the corrugated hose is provided with a connecting part, and the connecting part is provided with an interface with a sealing structure of lip. A circumferential mounting groove is provided in the connecting part, and two opposite sides of the circumferential mounting groove are symmetrically provided with protrusions.

[0005] Furthermore, the other end of the corrugated hose is provided with a stepped convergence port.

[0006] Furthermore, the lip is elastic.

[0007] Furthermore, a gate setting reference point is provided on the connecting part.

[0008] Furthermore, a protruding arrow is provided on the surface of the other end of the corrugated hose.

[0009] Furthermore, an oil-resistant layer is provided on the surface of the circumferential mounting groove.

[0010] This utility model has a simple yet ingenious structure. The improved rubber protective sleeve is waterproof and fireproof, and an oil-resistant layer is provided in the circumferential mounting groove, which can improve the service life of the product. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main view of this utility model.

[0012] Figure 2 This is a schematic diagram of the rear view of this utility model.

[0013] Figure 3 for Figure 2 CC cross-section view.

[0014] Figure 4 This is a schematic diagram of the lip and mouth structure.

[0015] Figure 5 for Figure 4 Enlarged view of section L in the middle.

[0016] Figure 6 for Figure 4 Schematic diagram of the HH cross section.

[0017] Illustration: 1 Corrugated hose, 2 Connecting end, 3 Connecting part, 31 Protrusion, 4 Lip, 5 Annular mounting groove, 6 Stepped converging port, 7 Gate setting reference point, 8 Outward protruding arrow. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0019] like Figure 1-6 As shown, this utility model relates to a waterproof and fireproof protective sleeve, including an EPDM corrugated hose 1 and a connecting end 2. The first end of the corrugated hose is provided with a connecting part 3, which is equipped with an interface with a lip-shaped sealing structure 4, and has an internal circumferential mounting groove 5. The circumferential mounting groove has symmetrically distributed protruding structures 31 on both sides, forming a bidirectional limiting mechanism.

[0020] As an improvement, the end of the corrugated hose is provided with a stepped converging port 6 to achieve a gradually shrinking sealing connection.

[0021] Preferably, the lip seal structure is made of an elastic material to ensure the ability to compensate for deformation of the contact surface.

[0022] In the further optimized solution, the surface of the connecting part is marked with a gate positioning reference point 7, which facilitates the control of the injection molding process.

[0023] Specifically, the outer wall of the end of the corrugated hose is provided with a raised directional mark 8 for installation direction identification.

[0024] In terms of technical features, the surface of the circumferential mounting groove is composite with an oil-resistant protective layer 51. Oil resistance testing was conducted: after applying MULTEMPAC-N and MULTEMPWR194 greases and placing the mixture in an environment at 130℃ for 70 hours, the test results must meet the following indicators:

[0025] Tensile strength change rate ≤ -25%

[0026] Change in elongation at break ≤ -50%

[0027] The volume expansion coefficient is controlled within ±10%.

[0028] Low-temperature embrittlement temperature ≤ -45℃

[0029] Waterproof performance verification shows that when the connecting part comes into contact with the fitting part, the contact surface of the fitting part forms a matching structure with the inner wall of the annular mounting groove, and no leakage is observed after a 24-hour sealing test in a 100mm water depth environment.

[0030] Material Selection Notes: EPDM (Ethylene Propylene Diene Monomer) is a polymer material made by ternary copolymerization of ethylene, propylene and trace amounts of non-conjugated dienes as monomers. It has both weather resistance and flame retardant properties.

Claims

1. A waterproof and fireproof protective cover, characterized in that: The device includes an EPDM corrugated hose and a connecting end. One end of the corrugated hose is provided with a connecting part. The connecting part is provided with an interface with a sealing structure of lip. The connecting part is provided with a circumferential mounting groove. The two opposite sides of the circumferential mounting groove are symmetrically provided with protrusions.

2. The waterproof and fireproof protective sleeve according to claim 1, characterized in that: The other end of the corrugated hose is provided with a stepped converging port.

3. The waterproof and fireproof protective sleeve according to claim 1, characterized in that: The lips are elastic.

4. A waterproof and fireproof protective cover according to claim 1, characterized in that: A gate setting reference point is provided on the connecting part.

5. A waterproof and fireproof protective cover according to claim 1, characterized in that: The other end of the corrugated hose is provided with a protruding arrow.

6. A waterproof and fireproof protective cover according to claim 1, characterized in that: An oil-resistant layer is provided on the surface of the circumferential mounting groove.

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