Impact tool
AssigneeMakita Corporation
InventorsKazuma AOKI, Tomoro AOYAMA
Life of this patent
Estimating the term…
Abstract
An impact tool has less size increase. An impact tool includes a motor, a spindle, an anvil including an anvil shaft and an anvil projection, a hammer including a hammer projection to strike the anvil projection in a rotation direction, a hammer case accommodating the hammer, an anvil bearing held in the hammer case and surrounding the anvil shaft, and a cup washer facing a front surface of the anvil projection. The cup washer includes an inner ring portion in contact with a rear end face of the anvil bearing, an outer ring portion surrounding the anvil bearing, and a connecting ring portion connecting an outer edge of the inner ring portion and an inner edge of the outer ring portion.
Claims15
An impact tool, comprising:
- a motor;
- a spindle rotatable with a rotational force from the motor, the spindle including
- a spindle shaft, and
- a flange on a rear portion of the spindle shaft;
- an anvil located frontward from the spindle, the anvil including
- an anvil shaft to receive a tip tool, and
- an anvil projection protruding radially outward from the anvil shaft;
- a hammer supported by the spindle shaft and including a hammer projection to strike the anvil projection in a rotation direction;
- a hammer case accommodating the hammer;
- an anvil bearing held in the hammer case and surrounding the anvil shaft;
- and
- a cup washer facing a front surface of the anvil projection, the cup washer including
- an inner ring portion in contact with a rear end face of the anvil bearing,
- an outer ring portion surrounding the anvil bearing and supported on the hammer case, and
- a connecting ring portion connecting an outer edge of the inner ring portion and an inner edge of the outer ring portion.
Dependencies are inferred from the claim text.