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Title:
THREADED REINFORCEMENT ANCHOR PLATE AND ANCHORING STRUCTURE
Document Type and Number:
Japanese Patent JP2009114729
Kind Code:
A
Abstract:

To provide a threaded reinforcement anchor plate which can be manually fastened, is proof against backlash, dispenses with a reinforcement marking step, allows the operator to check abnormality such as foreign matter and a screwing location, and accommodates defective end face shape at a distal end of a threaded reinforcement to a certain degree, and to provide a threaded reinforcement anchoring structure.

According to the structure of the threaded reinforcement anchor plate, a range from an exit 6 of a through threaded hole 4 into which a steady female thread section 2 screwable onto a male thread of the threaded reinforcement, is penetrated, to a location inside the exit by 0.5 to 5 pitches, is set as a non-steady female thread section 3 where a female thread trough width w becomes smaller at a location closer to the exit 6 such that out of two trough surfaces opposed to each other in a female thread trough, strict lead angles (1, 2) in A side trough surfaces 7 to which a tensile load of the reinforcement is applied, are set to steady values but strict lead angles (3, 4) in the other B side trough surfaces 8 are set to smaller values.


Inventors:
TERAOKA TAKUJI
KIUE TAKAO
Application Number:
JP2007288647A
Publication Date:
May 28, 2009
Filing Date:
November 06, 2007
Export Citation:
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Assignee:
DAIWA STEEL CORP
International Classes:
E04C5/12
Domestic Patent References:
JP2007239322A2007-09-20
JP2005133300A2005-05-26
JP2003027662A2003-01-29
JPH11200558A1999-07-27
Attorney, Agent or Firm:
Eiichi Kobayashi