High-pressure tank liner and method of manufacturing same
AssigneesHonda Motor Co., Ltd., Branson Ultrasonic Corporation
InventorsTakaharu Sato, Yuka Kishi, Yusuke Sugawara
Life of this patent
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Abstract
In the vicinity of an opening end of a first liner constituent member and a second liner constituent member made of a resin material, a flange portion is formed. After end surfaces of the opening end are abutted and joined to each other, the flange portion is removed in such a way that a part of a bottom portion remains. The remaining amount of protrusion is set such that the joint strength of a joint portion is not less than the tensile strength of the resin material or not less than the cohesion failure strength of the joint portion.
Claims7
A method of manufacturing a liner for a high pressure tank for obtaining the liner for the high pressure tank by joining two liner constituent members made of a resin material,
- the liner constituent members being members each including a flange member that is provided in a vicinity of an open end and includes a bottom portion protruding outwardly in a diametrical direction, and a side portion bent from the bottom portion toward a side of a closed end, an annular recess being defined by the bottom portion and the side portion,
- the method of manufacturing the liner for the high pressure tank comprising:
- a contact step of placing end surfaces of the open ends of the two liner constituent members in contact with each other;
- a joining step of joining the end surfaces of the open ends to each other by welding, and thereby obtaining a joint;
- and
- a cutting step of cutting the bottom portions and the side portions of the flange members in a manner so that parts of the bottom portions remain,
- wherein the flange members are left remaining with a protruding amount whereby a joint strength of the joint obtained from a tensile test becomes greater than or equal to a tensile strength of the resin material.
Dependencies are inferred from the claim text.