Electric drill
OwnerKazuhiro Yamamotoinventor
Life of this patent
Estimating the term…
Abstract
An electric drill having a function for preventing drilling of unexpected oblique hole. Further, in the electric drill, when the direction of drilling is displaced in drilling work using the electric drill, it is sensed automatically to stop the drilling. The electric drill (1) performs drilling in the direction perpendicular a workpiece (7) and has a tilt sensor (10) mounted on a tilt sensor mounting surface (8) defined in parallel to the ground surface. When the rotation axis (C) of the drill positioned perpendicular to the surface of the workpiece is tilted to an angle equal to or greater than a predetermined angle, the tilt sensor (10) senses the tilt to shutoff a drive current of the electric drill.
Claims10
An electric drill for boring holes on a workpiece material in the vertical direction including an inclination sensor mounted on an inclination sensor mount plane set parallel to the surface of the ground,
- wherein when a rotation axis of said drill positioned on the surface of said workpiece material in the vertical direction is tilted at an angle greater than a predetermined angle, said inclination sensor senses said inclination to interrupt a drive current of said electric drill.
An electric drill for boring holes in a workpiece material including an inclination sensor located on an inclination sensor mount plane which inclination sensor mount plane is defined as a plane parallel to the surface of the ground within said electric drill, wherein said inclination sensor senses an inclination and interrupts said drill drive current when a rotation axis of said electric drill is tilted at an angle greater than a predetermined angle from a boring direction obtained at the start of boring holes.
An electric drill for boring holes in a workpiece material in a perpendicular direction including
- an attitude angle detecting sensor set to said electric drill for detecting a posture angle of said electric drill, wherein said attitude angle detecting sensor senses an inclination and interrupts a drive current of said electric drill when an posture angle of said electric drill is tilted at an angle greater than a predetermined angle.
Dependencies are inferred from the claim text.