Title:
FASTENING TORQUE MANAGEMENT TOOL, AND COMBINATION OF FASTENING TORQUE MANAGEMENT TOOL AND FASTENING TOOL
Document Type and Number:
Japanese Patent JP2018204623
Kind Code:
A
Abstract:
To provide a fastening torque management tool (2) capable of sufficiently increasing fastening torque through it can be comparatively inexpensively manufactured from a synthetic resin, and minimizing cracking of each angular portion of an outer peripheral face of a fastening tool (hexagonal nut 30) even when it is strongly collided with an upstream face (16b) of each recessed portion (16) formed on an inner peripheral face of a storage hole, when the inner peripheral face of the storage hole (8) of a fastening tool storage portion (4) is deformed and the fastening torque management tool (2) is idled to the fastening tool (hexagonal nut 30).SOLUTION: A fastening torque management tool (2) includes a fastening tool storage portion (4) and a fastening torque application portion (6) integrally formed from a synthetic resin. The fastening tool storage portion (4) is provided with a storage hole (8) opened at its free end portion, an inner peripheral face of the storage hole (8) has a configuration that recessed portions (16) are formed on intermediate portions of side faces (15) of a regular polygonal inner peripheral face corresponding to a torque application regular polygonal outer peripheral face of the fastening tool, and a bottom surface (16a) of the recessed portion (16) and an upstream face (16b) positioned at an upstream side when observed from a fastening rotation direction, have an obtuse angle.SELECTED DRAWING: Figure 5
Inventors:
KOBAYASHI RYUTA
ENOMOTO KATSUMI
ENOMOTO KATSUMI
Application Number:
JP2017106784A
Publication Date:
December 27, 2018
Filing Date:
May 30, 2017
Export Citation:
Assignee:
NIPPON CLOSURES CO LTD
International Classes:
F16B31/02
Domestic Patent References:
| JPS59113307A | 1984-06-30 | |||
| JPS51147855U | 1976-11-27 | |||
| JPS5554185A | 1980-04-21 | |||
| JPS4827912Y1 | 1973-08-18 | |||
| JP2014156898A | 2014-08-28 | |||
| JP3009000U | 1995-03-28 |
Attorney, Agent or Firm:
Naozumi Ono
Sachiko Okunuki
Toshiyuki Kojima
Sachiko Okunuki
Toshiyuki Kojima