Back to results
US 2026/0257283 A1Published application
Work machine
AssigneeKoki Holdings Co., Ltd.
InventorReo FUJIKAWA
Life of this patent
Estimating the term…
Abstract
A work machine is provided with a Microcomputer that controls the driving of a motor. If centrifugal direction acceleration applied to an acceleration sensor exceeds a centrifugal direction acceleration threshold value, the Microcomputer reduces the rotation speed of the motor or stops the motor. The Microcomputer requires the meeting of a condition in which a load current of the motor exceeds a current threshold value (not in a no-load state) to activate a swing control function.
Claims15
A work machine, comprising:
- a motor;
- a tip tool that rotates around a rotation shaft by receiving a driving force from the motor;
- a housing that supports the motor and the tip tool;
- a control unit that controls driving of the motor;
- a detection unit supported by the housing and capable of detecting an acceleration occurring in itself;
- wherein the control unit controls the driving of the motor based on a radial acceleration occurring in a radial direction around the rotation shaft with respect to the detection unit.
3 more elements
A work machine, comprising:
- a motor;
- a tip tool that rotates around a rotation shaft by receiving a driving force from the motor;
- a housing that supports the motor and the tip tool;
- a control unit that controls driving of the motor;
- a detection unit supported by the housing and capable of detecting an acceleration occurring in itself;
- wherein when the tip tool gets caught on a counter material and the housing is swung, the control unit controls the driving of the motor based on an acceleration occurring in a direction intersecting a direction in which the housing is swung with respect to the detection unit.
3 more elements
A work machine, comprising:
- a motor;
- a tip tool that rotates around a rotation shaft by receiving a driving force from the motor;
- a housing that supports the motor and the tip tool;
- a control unit that controls driving of the motor;
- a detection unit supported by the housing and capable of detecting an acceleration occurring in itself;
- wherein when the housing is swung in a rotation direction around the rotation shaft, controls the driving of the motor based on a centrifugal direction acceleration occurring in a radial direction around the rotation shaft with respect to the detection unit.
3 more elements
Dependencies are inferred from the claim text.