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Title:
TIGHTENING TORQUE MANAGING TOOL AND COMBINATION OF TIGHTENING TORQUE MANAGING TOOL AND FASTENING TOOL
Document Type and Number:
WIPO Patent Application WO/2018/221003
Kind Code:
A1
Abstract:
This tightening torque managing tool (2) includes a fastening tool accommodation part (4) and a tightening torque applying part (6) which are integrally formed from a synthetic resin. The fastening tool accommodation part (4) is provided with an accommodation hole (8) having an open free end, the inner circumferential surface of the accommodation hole (8) has a shape in which a recessed section (16) is formed in a middle portion of each of the side surfaces (15) of a regular polyhedral inner peripheral surface corresponding to a torque-applying regular polyhedral outer peripheral surface of the fastening tool, and an obtuse angle is formed between the bottom surface (16a) of the recessed section (16) and an upstream surface (16b) positioned on the upstream side from the perspective of the tightening rotation direction. On the side surfaces (15), a holding protrusion part configured from a rib (21) extending in the axial direction of the accommodation hole (8) for example is installed in a portion (15b) positioned on the upstream side of the recessed section (16) from the perspective of the tightening rotation direction.

Inventors:
KOBAYASHI, Ryuta (Research & Development Center, 2-12, Nagatoro, Hiratsuka-sh, Kanagawa 21, 〒2540021, JP)
ENOMOTO, Katsumi (Research & Development Center, 2-12, Nagatoro, Hiratsuka-sh, Kanagawa 21, 〒2540021, JP)
Application Number:
JP2018/014589
Publication Date:
December 06, 2018
Filing Date:
April 05, 2018
Export Citation:
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Assignee:
NIPPON CLOSURES CO., LTD. (18-1, Higashi-Gotanda 2-chome Shinagawa-k, Tokyo 22, 〒1410022, JP)
International Classes:
F16B31/02; B25B23/153
Foreign References:
JPS59113307A1984-06-30
JPS5554185A1980-04-21
JPS4827912Y11973-08-18
JP2014156898A2014-08-28
JP3009000U1995-03-28
Attorney, Agent or Firm:
ONO, Hisazumi et al. (Nishi-Shimbashi Daiichi Hoki bldg, 5-2 Nishi-Shimbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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