DRIVER BIT
PROBLEM TO BE SOLVED: To provide a practical driver bit for showing an action effect unattainable hitherto.SOLUTION: In a driver bit provided on the tip with an engagement part 1a having a polygonal cross section to be engaged with a square hole 10a of a bolt 10 with the square hole, a tip of the en...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a practical driver bit for showing an action effect unattainable hitherto.SOLUTION: In a driver bit provided on the tip with an engagement part 1a having a polygonal cross section to be engaged with a square hole 10a of a bolt 10 with the square hole, a tip of the engagement part 1a is provided with a flat apical surface 2 orthogonal to a shaft center line of the engagement part 1a, and a linkage angle with each flat side face 4 linked to the flat apical surface 2 through a corner edge 3 is set at an angle of 90° or larger, which is engageable with a bottom part of the square hole 10a of the bolt 10 with the square hole.SELECTED DRAWING: Figure 1
【課題】本発明は、従来にない作用効果を発揮する実用的なドライバービットを提供することを目的とする。【解決手段】角穴付きボルト10の角穴10ａに嵌入する断面多角形の嵌入部１ａが先端に設けられたドライバービットであって、この嵌入部１ａの先端には該嵌入部１ａの軸心線と直交する平坦先端面２が設けられ、この平坦先端面２と角縁３を介して連設する各平坦側面４との連設角度は、前記角穴付きボルト10の角穴10ａの底部まで嵌入可能であり且つ９０°以上の角度に設定されたものである。【選択図】図１ |
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