Striking tool
AssigneeMakita Corporation
InventorsKiyonobu YOSHIKANE, Mizuki YAMAMOTO
Life of this patent
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Abstract
A striking tool restricting movement of an intermediate member toward a striker reliably prevents no-load strokes. A hammer drill includes a cylindrical tool holder holding a tip tool, a motor, a piston that reciprocate with rotation from the motor, a striker that reciprocate in cooperation with the piston, an intermediate member reciprocably accommodated in the tool holder between the striker and the tip tool and in contact with a rear end of the tip tool at a normal strike to indirectly transmit a strike from the striker to the tip tool, and at least two ring members that move in a front-rear direction accommodated in the tool holder at a front of the intermediate member between the tool holder and the intermediate member. At least one ring member is made of metal.
Claims18
A striking tool, comprising:
- a cylindrical tool holder configured to hold a tip tool;
- a motor;
- a piston configured to reciprocate with rotation from the motor;
- a striker configured to reciprocate in cooperation with the piston;
- an intermediate member accommodated in the tool holder between the striker and the tip tool in a reciprocable manner, the intermediate member configured to come in contact with a rear end of the tip tool at a normal strike to indirectly transmit a strike from the striker to the tip tool;
- and
- at least two ring members accommodated in the tool holder at a front of the intermediate member and between the tool holder and the intermediate member in a manner movable in a front-rear direction,
- wherein at least one of the ring members is made of metal.
Dependencies are inferred from the claim text.