Expander assembly

胀头组件

Abstract

本实用新型涉及胀头组件,其包括胀头固定轴、胀球、胀套和胀头销,胀球设有胀球通孔并通过胀套和胀头销安装在胀头固定轴上,胀套为中空圆筒形结构且具有插入端,插入端沿其轴向开设有贯通其周壁的剖沟将插入端分成若干周向排列的可径向形变的弹性片;胀头固定轴一端设有轴向的中心孔,插入端穿过胀球通孔插入中心孔中并通过第一卡扣结构将胀套安装在胀头固定轴上;胀头销具有胀头销帽及与胀头销帽相连的胀头销本体,胀头销本体插入胀套中阻止弹性片径向向内形变并通过第二卡扣结构与胀套结合。本实用新型利用胀套的插入端具备可径向形变能力及卡扣结构可方便地将胀球安装在胀头固定轴上,避免造成胀球与胀杆间螺纹结构失效而滑丝,且结构简单。
The utility model relates to an expander assembly. The expander assembly comprises an expander fixing shaft, an expanding ball, an expanding sleeve and an expander pin. The expanding ball is provided with an expanding ball through hole and mounted on the expanding fixing shaft through the expanding sleeve and the expander pin; the expanding sleeve is in a hollow cylindrical structure and provided with an insertion end, and the insertion end is provided with a cut groove in the axial direction, which communicates the peripheral wall of the insertion end and drives the insertion end into a plurality of radially-deformable elastic pieces which are circumferentially arranged; one end of the expanding fixing shaft is provided with an axial central hole, the insertion end penetrates the expanding ball through hole, is inserted inside the central hole and mounts the expanding sleeve on the expander fixing shaft through a first fastening structure; the expander pin is provided with an expander pin cap and an expander pin body connected with the expander pin cap, and the expander pin body is inserted into the expanding sleeve to stop the radial inward deformation of the elastic pieces and to be combined with the expanding sleeve through a second fastening structure. According to the expander assembly, by means of the radially-deformable capability of the insertion end of the expanding sleeve and the fastening structures, the expanding ball can be mounted on the expander fixing shaft conveniently, slip screwing due to failure of the screw structures between the expanding ball and an expanding rod can be avoided; meanwhile, the expander assembly is simple in structure.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-103418700-ADecember 04, 2013中山市奥美森工业有限公司Expansion head assembly
    CN-103418700-BDecember 16, 2015奥美森智能装备股份有限公司胀头组件