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

Japanese Patent JP6846986

B2

To provide a fastening torque management tool (2) capable of sufficiently increasing fastening torque though it can be comparatively inexpensively manufactured from a synthetic resin, and sufficiently preventing a fastening tool (hexagonal nut 30) from being housed in a storage hole (8) by positioning each angular portion of a regular polygonal outer peripheral face (32) of the fastening tool (hexagonal nut 30) in each recessed portion (16) of the storage hole (8) by storing the fastening tool (hexagonal nut 30) in the storage hole (8) of the fastening tool storage portion (4) as required, that is, without storing the regular polygonal outer peripheral face of the fastening tool while aligned to a virtual regular polygonal inner peripheral face of the storage hole (8).SOLUTION: A regular polygonal shape defined by a straight line (17) connecting adjacent opening ends (17a, 17b) of adjacent recessed portions (16) in a storage hole (8) is determined to be larger than a torque application regular polygonal outer peripheral face of a fastening tool (hexagonal nut 30). Or a blocking projection (29) for blocking intrusion of the fastening tool (hexagonal nut 30) is disposed on at least one of the recessed portions (16) existing on an inner peripheral face of the storage hole (8).SELECTED DRAWING: Figure 5

Ryota Kobayashi

JP2017106785A

March 24, 2021

May 30, 2017

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Nihon Closure Co., Ltd.

F16B31/02; B25B23/143; B25B23/153

JP59113307A
JP59167666U
JP55054185A
JP59168008U
JP61016276U
JP9070762A
JP4060668U
JP2013224680A
JP48027912Y1
JP57137707A
JP64040282A
JP2001140832A
JP2015224781A
JP2018008352A

Naozumi Ono
Sachiko Okunuki
Toshiyuki Kojima

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