Relative rotation prevention structure for screw, relative movement prevention structure, and relative movement prevention body
AssigneeNejiLaw Inc.
InventorHiroshi Michiwaki
Life of this patent
Estimating the term…
Abstract
A relative rotation prevention structure for preventing relative rotation of a screw having a threaded section with respect to a counterpart member, the relative rotation prevention structure being equipped with: a counterpart-side displacement section formed in advance on the counterpart member and capable of displacement in the axial direction or the radial direction; and a screw-side deformation-capable section that is formed on the screw and deforms when pressed into the counterpart-side deformation section by means of fastening force and, due to that deformation, produces a screw-side displacement section that is displaced in the axial direction or the radial direction.
Claims14
A relative-rotation prevention structure for preventing relative-rotation of a screw having a threaded portion with respect to a counterpart member, the structure comprising:
- a counterpart-side displacement section formed in advance in the counterpart member and defined in an axial direction or a radial direction, the counterpart-side displacement section comprising one or more strip-shaped radial protrusions extending helically at an angle relative to the axial direction;
- and
- a screw-side deformation-capable section formed on the screw, wherein the screw-side deformation-capable section is configured to press the counterpart-side displacement section through a fastening force and thus is configured to be deformed by the one or more strip-shaped radial protrusions in both the axial direction and the radial direction, thereby to produce a screw-side displacement section defined in the axial or the radial direction.
A relative-rotation prevention structure constructed between a screw having a threaded portion and a counterpart member abutting the screw, the relative-rotation prevention structure comprising:
- a screw-side displacement section formed in advance in the screw and displaced in an axial or radial direction, the screw-side displacement section comprising one or more strip-shaped grooves defined in the axial direction and a circumferential direction;
- and
- a counterpart-side deformation-capable section formed on the counterpart member, wherein the counterpart-side deformation-capable section is configured to press the screw-side displacement section through a fastening force and thus is configured to deform in both an axial direction and a radial direction, thereby to produce a counterpart-side displacement section defined in the axial direction and the radial direction.
Dependencies are inferred from the claim text.