Rotary impact tool
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMasari Muramatsu, Takashi Kusagawa
Life of this patent
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Abstract
A secondary hammer support structure in a rotary impact tool is structured such that a plurality of steel balls are disposed between a secondary hammer and a retaining member. The plurality of steel balls are arranged between the first retaining groove of the secondary hammer and the second retaining groove of the retaining member. The retaining member is formed as a member separate from the spindle and has a retaining surface for retaining steel balls and a mounting surface mounted to the spindle so as not be rotatable. The mounting surface of the retaining member is mounted to a front member of a carrier.
Claims7
A rotary impact tool comprising:
- a driving unit;
- a spindle rotated by the driving unit;
- an anvil disposed in front of the spindle in the direction of the line of rotational axis of the spindle;
- a primary hammer rotatable around the line of rotational axis of the spindle and movable in the direction of the line of rotational axis;
- a cam structure in which at least one steel ball is disposed between a guidance groove of the spindle and an engagement groove of the primary hammer;
- a secondary hammer rotatable with the primary hammer as one piece;
- a support member that rotatably supports the secondary hammer;
- and
- a retaining member that retains the support member, wherein
- the retaining member is formed as a member separate from the spindle and has a retaining surface for retaining the support member and a mounting surface mounted to the spindle so as not be rotatable.
Dependencies are inferred from the claim text.