Part fastening structure and mounting tool
AssigneeToyota Jidosha Kabushiki Kaisha
InventorYoshinori FUJIKAKE
Life of this patent
Estimating the term…
Abstract
A part fastening structure according to the present embodiment is a part fastening structure that fastens a part by using a bolt and a nut. The bolt is provided on a peripheral surface of a shaft portion, and includes a recess portion recessed to a central axis side and a thread groove provided on a head portion side of the recess portion. The nut includes a first nut member that is screwed into the thread groove, and a second nut member that is disposed on an outer peripheral side of the first nut member. The first nut member is provided with a lever that rotates around a rotation shaft extending in a direction parallel to an axial direction of the bolt.
Claims5
A part fastening structure that fastens a part using a bolt and a nut,
- wherein the bolt includes:
- a shaft portion extending along a central axis;
- a head portion protruding to an outer side from the shaft portion;
- a recess portion that is provided on a peripheral surface of the shaft portion and that is recessed to the central axis side;
- and
- a thread groove that is provided on the peripheral surface of the shaft portion, on the head portion side of the recess portion,
- wherein the nut includes:
- a first nut member that is screwed with the thread groove;
- a second nut member that is disposed on an outer peripheral side of the first nut member;
- and
- a first urging member that is disposed between the first nut member and the second nut member and that urges the second nut member toward the head portion,
- wherein the first nut member is provided with a lever that rotates around a rotation shaft extending in a direction parallel to an axial direction of the bolt,
- wherein a protruding portion is provided on one end side of the lever,
- wherein a second urging member that urges the lever is provided such that the protruding portion is inserted into the recess portion,
- wherein the second nut member includes:
- a cylindrical portion having a hollow portion in which the first nut member is disposed;
- an accommodation port that accommodates the lever such that another end side of the lever is passed to an outer peripheral side of the cylindrical portion;
- and
- a knob that protrudes toward the outer peripheral side of the cylindrical portion.
Dependencies are inferred from the claim text.