초록 ▼

An attachment apparatus is provided for attaching an elongated shaft to a structural element, wherein the shaft defines a longitudinal axis, and the structural element includes an opening through the structural element which defines a central axis extending in a direction generally perpendicular to

An attachment apparatus is provided for attaching an elongated shaft to a structural element, wherein the shaft defines a longitudinal axis, and the structural element includes an opening through the structural element which defines a central axis extending in a direction generally perpendicular to the axis of the shaft. The apparatus includes a helical coil of wire having a central coiled section and opposed end sections protruding from the coiled section, an inner space defined by the coiled section that is sized to grip the shaft and to prevent relative axial movement between the helical coil and the shaft when the coil is mounted on the shaft, and a fastening assembly for fastening the apparatus to the structural element when at least one end section is inserted into the opening. The apparatus is mounted on the elongated shaft by rotating the opposed end sections so that the coiled section unwinds, increasing the diameter of the inner space to a point where it is slightly larger than the cross-sectional diameter of the shaft. The elongated shaft is inserted through the inner space to a desired position relative to the apparatus, and the opposed end sections are rotated so that the coiled section rewinds, decreasing the diameter of the inner space until the shaft is firmly retained through the apparatus. In a preferred embodiment, the fastening assembly includes hook-shaped tips defined by the opposed end sections, and spaced-apart by a distance greater than the diameter of the opening.

대표청구항 ▼

In combination: an elongated shaft defining a longitudinal axis; a structural element including an opening of a predetermined diameter and defining a central axis extending in a direction perpendicular to the longitudinal axis; and a fastening means for fastening the shaft to the structural element,

In combination: an elongated shaft defining a longitudinal axis; a structural element including an opening of a predetermined diameter and defining a central axis extending in a direction perpendicular to the longitudinal axis; and a fastening means for fastening the shaft to the structural element, the fastening means including a helical coil of wire including a central coiled section having three to seven coils, and two opposed end sections extending tangentially from the coiled section, the coiled section being sized of a diameter smaller than the shaft to grip the shaft and to prevent relative axial movement between the helical coil and the shaft when the coil is mounted on the shaft, the end sections including hook-shaped tips that are spaced apart from one another by a distance greater than the predetermined diameter of the opening so that the tips, when received in the opening, fasten the elongated shaft to the structural element, the opposed end sections of the coil each intersecting a plane defined by the longitudinal axis of the shaft and the central axis of the opening so that as the tips of the two end sections are pushed through the opening in the structural element, the tips are deflected toward one another and the coiled section is forced to partially unwind until the tips are pushed completely through the opening.