Patent ID: 11904449
Assignee: MAKITA CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. An impact tool, comprising:
a motor;
a driving mechanism configured to linearly drive a tool accessory along a driving axis by power of the motor, the driving axis extending in a front-rear direction of the impact tool;
a body housing that houses the motor and the driving mechanism;
a handle connected to the body housing via an elastic member to be movable relative to the body housing, the handle including a grip part configured to be held by a user;
a position detection device configured to detect when the handle is in different positions relative to the body housing; and
a control device configured to control rotation speed of the motor based on a position detection result of the position detection device, wherein:
the control device is configured to drive the motor (i) at a first rotation speed when the position detection device detects that the handle is in a first rearward position relative to the body housing and (ii) at a second rotation speed higher than the first rotation speed when the position detection device detects that the handle has moved to a second position relative to the body housing from the first rearward position, the second position being forward of the first rearward position;
the control device is configured to drive the motor at (i) the first rotation speed when the grip part and the body housing are apart from each other by at least a first distance and (ii) the second rotation speed when the grip part and the body housing are apart from each other by a second distance shorter than the first distance; and
the first detection device is a magnetic field sensor in the handle.