PROBLEM TO BE SOLVED: To provide a "marking tool" capable of preventing deflection or damage while suppressing weight increase.SOLUTION: A marking tool 1 includes a main body plate 2 molded of a synthetic resin. The main body plate 2 concentrically includes an inside slender hole 3 and an outside slender hole 4. The inside slender hole 3 has a configuration in which a plurality of slit parts 3a are annularly and continuously interconnected via connection parts 3b. The outside slender hole 4 also has a configuration in which a plurality of slit parts 4a are annularly and continuously interconnected via connection parts 4b. The thicknesses of the connection parts 3b and 4b are set to be greater than that of the main body plate 2.SELECTED DRAWING: Figure 1
【課題】重量増加を抑えつつ撓みや破損を防止できる「墨出用治具」を提供する。【解決手段】墨出用治具1は合成樹脂で成形された本体板部2を備えており、この本体板部2には内側細長孔3と外側細長孔4が同心状に形成されている。内側細長孔3は複数のスリット部3aを繋ぎ部3bを介して環状に連続させた構成となっており、外側細長孔4も複数のスリット部4aを繋ぎ部4bを介して環状に連続させた構成となっており、これら繋ぎ部3b,4bの板厚が本体板部2の板厚よりも大きく設定されている。【選択図】図1
MARKING TOOL
墨出用治具
2017-12-21
Patent
Electronic Resource
Japanese