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Cylinder device
申请公布号：US9272354(B2)
申请号：US201113636996
申请日期：2011.03.28
申请公布日期：2016.03.01
发明人：Yoshioka Isao;Kimura Norihisa;Kambe Kazuyoshi
分类号：F01B11/02;B23K9/028;F15B15/14;B23K33/00
主分类号：F01B11/02
代理人：Nixon & Vanderhye P.C.
地址：Ibaraki JP
摘要：The present invention relates to the provision of a cylinder apparatus that is able to maintain a superior join condition, and has: a cylindrical cylinder (11); an end portion member (12) that is placed on the end portion side of the cylinder (11); and a weld portion (13) that fixes an outer circumferential side of the cylinder (11), when this has been engaged with an inner circumferential side of the end portion member (12), to one end of the end portion member (12) by means of a weld, wherein abutting portions (21), which abut in the circumferential direction against a contact portion (60) of the end portion member (12) and notch portions (20) are provided alternatingly in the circumferential direction on the end portion side of the cylinder (11), and the notch portions (20) form communicating passages (69) that connect the weld portion (13) to an inner circumferential side space (67) inside the cylinder (11) or end portion member (12).
主权项：1. A cylinder apparatus comprising: a cylindrical outer cylinder; an end portion member that is engaged with the end portion side of the outer cylinder; and a weld portion that fixes the end portion member to the outer cylinder by welding around an entire circumference of an engagement portion between the end portion member and the outer cylinder, wherein the end portion member has a cylindrical engagement portion, and the outer cylinder is engaged with an inner circumferential side of the engagement portion, the inner circumferential side of the engagement portion of the end portion member has an enlarged diameter portion at an aperture end side thereof that forms a space between the engagement portion and the outer cylinder, and a reduced diameter portion at a bottom portion side thereof that abuts with an outer circumferential surface of the outer cylinder and that performs positioning of the outer cylinder in a radial direction relative to the end portion, member, an abutting portion and a notch portion are provided on an end portion of the outer cylinder, the abutting portion abuts the end portion member, and the notch portion forms communicating passages that connect the weld portion to an internal space inside the outer cylinder.