FASTENING APPARATUS AND SYSTEM FOR DETECTING AXIAL FORCE THEREOF

• US 20100054891A1
• Filed: 06/24/2009
• Published: 03/04/2010
• Est. Priority Date: 08/27/2008
• Status: Abandoned Application

• Current Assignee: Asahi Electric Works, Ltd.
• Original Assignee: Asahi Electric Works, Ltd.
• Inventors: Hashimoto, Fumiyoshi, Nishida, Eiji
• Application Number:
  US12/490,995
• Publication Number:
  US 20100054891A1
• Time in Patent Office: Days
• US Class Current: 411/9
• CPC Class Codes: B25B 23/14 Arrangement of torque limiters or torque indicators in wrenches or screwdrivers couplings for transmitting rotation or clutches F16D; devices for measuring torque per se G01L
• CPC Class Codes: F16B 31/02 for indicating the attainment of a particular tensile load or limiting tensile load apparatus for, or method of, determining value of torque or twisting moment for tightening a nut or other member similarly stressed G01L5/24

Abstract

A detecting system of a fastening apparatus that detects an axial force of the fastening apparatus including a bolt or a nut. The detecting system includes an axial force detector including a strain gauge and an IC tag, the strain gauge being provided at a predetermined location to detect an axial force value of the fastening apparatus, and the IC tag being connected to the strain gauge and wirelessly transmitting the detected axial force value and unique identification information. Power is supplied to the axial force detector. A reader reads data transmitted from the axial force detector.

Claims

1. A fastening apparatus having means for detecting a fastening axial force value, the fastening apparatus comprising:

an axial force detector including a strain gauge and an IC tag, the strain gauge being provided at a predetermined location to detect the axial force value, and the IC tag being connected to the strain gauge and wirelessly transmitting the axial force value detected by the strain gauge and unique identification information; and

means for supplying power to the axial force detector.

2. The fastening apparatus as claimed in claim 1, wherein the fastening apparatus includes a bolt or a nut, and

wherein the strain gauge and the IC tag are positioned so as not to contact a fastening tool when the fastening apparatus is fastened using the fastening tool.

3. An axial force detecting system of a fastening apparatus, the axial force detecting system having means for detecting an axial force of the fastening apparatus that includes a bolt or a nut, the axial force detecting system comprising:

an axial force detector including a strain gauge and an IC tag, the strain gauge being provided at a predetermined location to detect an axial force value of the fastening apparatus, and the IC tag being connected to the strain gauge and wirelessly transmitting the detected axial force value and unique identification information;

means for supplying power to the axial force detector; and

a reader for reading data transmitted from the axial force detector.