締付トルク管理具及び締付トルク管理具と締結具との組み合わせ

Title:

締付トルク管理具及び締付トルク管理具と締結具との組み合わせ

Document Type and Number:

Japanese Patent JP6892802

Kind Code:

B2

Abstract:

To provide a fastening torque management tool which can sufficiently increase fastening torque while the tool can be relatively inexpensively manufactured of a synthetic resin, and a combination of the fastening torque management tool and a fastener.SOLUTION: A fastening torque management tool includes a fastener accommodation part 4 which is formed of a synthetic resin integrally therewith, and a fastening torque impartment part. An accommodation hole 8 whose free end is opened is formed at the fastener accommodation part 4, and an internal peripheral face of the accommodation hole 8 is formed into a shape having a recess 16 at an intermediate part of each side face 15 of a regular polygonal internal peripheral face corresponding to a torque impartment regular polygonal external peripheral face of the fastener. In a portion 15b located at an upstream side of the recess 16 when viewed in a fastening rotation direction at the side face 15 of the regular polygonal internal peripheral face corresponding to the regular polygonal internal peripheral face which defines the accommodation hole 8, a holding protrusion constituted of, for example, a rib 21 extending to an axial line direction of the accommodation hole 8 is arranged in the accommodation hole 8.SELECTED DRAWING: Figure 5

Inventors:

Ryota Kobayashi

Application Number:

JP2017161283A

Publication Date:

June 23, 2021

Filing Date:

August 24, 2017

Export Citation:

Click for automatic bibliography generation Help