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Ventilated hose

A technology of ventilation hose and rubber layer, which is applied in the direction of hoses, pipes, pipes/pipe joints/fittings, etc., and can solve problems such as difficult installation and disassembly of ventilation hoses

Inactive Publication Date: 2002-10-09
TOYODA GOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with conventional air hoses, it is not easy to attach or detach the air hose to or from pneumatic equipment due to properties such as those of rubber made of ECO

Method used

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  • Ventilated hose
  • Ventilated hose
  • Ventilated hose

Examples

Experimental program
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Embodiment Construction

[0015] In the present invention, the first rubber layer includes an epichlorohydrin rubber. The epichlorohydrin rubber includes homopolymers and copolymers using epichlorohydrin as a unit body. As examples, they can be made from epichlorohydrin-ethylene oxide copolymer (ECO), epichlorohydrin-ethylene oxide-allyl glycidyl ether copolymer (GECO) and the like.

[0016] The second rubber layer comprises chlorosulfonated polyethylene rubber and surrounds the outer surface of the first rubber layer to a thickness of about 0.2-0.6 mm.

[0017] According to the ventilation hose with the above structure of the present invention, in order to keep its outer diameter similar to that of a conventional hose, the thickness of the second rubber layer on the outer surface of the first rubber layer is made thinner, That is, about 0.2 mm to 0.6 mm, thus ensuring that the thickness of the inner first rubber layer is similar to that of a conventional single-layer vent hose. Since the first rubbe...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To simply avoid inconveniences in connection with the contact with an external member. SOLUTION: An air hose 10 is provided with a first rubber layer 12 occupying a major part, and a second rubber layer 14 formed on its outer circumference. The first rubber layer 12 consists of epichlorohydrin ethylene oxide copolymer (ECO), while the second rubber layer 14 consists of chlorosulfonated polyethylene (CSM). The first rubber layer 12 and the second rubber layer 14 are simultaneously formed using an injection molding machine of a hose, and the second rubber layer 14 is 0.2-0.6mm in thickness. Thus, the air hose 10 is not greatly worn due to excellent wear resistance of the second rubber layer 14 even when it is brought into contact with the external member.

Description

technical field [0001] The present invention relates to a breather hose to be connected to a pneumatic device such as a vacuum control valve, a vacuum switch, a diaphragm valve, a one-way valve in an engine charging and exhausting system, a fuel vapor supply system, etc. and other similar. Background technique [0002] The air hose should have properties such as high flexibility and high productivity. For example, since a vehicle provided with pneumatic equipment is likely to be used in various cold and hot environments, a breather hose used therein needs to have excellent weather resistance such as heat resistance, cold resistance, and ozone resistance. For this reason, a single-layer hose made of a rubber material having excellent weather resistance, such as epichlorohydrin-ethylene oxide copolymer (ECO), is generally used. [0003] However, breather hoses connected to the vehicle's pneumatic equipment (such as vacuum control valves, vacuum switches, diaphragm valves, ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/08F16L11/04F16L11/20
Inventor 野田达人加藤善久椿公男
Owner TOYODA GOSEI CO LTD
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