Back to results
US 7,111,835 B2Granted
Clamp apparatus
AssigneeSMC Corporation
InventorsShigekazu Nagai, Akio Saitoh, Motoshi Togasaki, Kazuyuki Oguma
Life of this patent
Estimating the term…
Abstract
A clamp apparatus has a lower body. A rotary driving source driven by an electric signal, a pump mechanism having a pressure oil-sucking/discharging mechanism energized/deenergized by the rotary driving source, a cylinder mechanism provided with a piston for moving in an axial direction in accordance with supply of pressure oil, and an accumulator for retaining the pressure oil are integrally assembled to the lower body.
Claims9
A clamp apparatus for gripping a workpiece by a rotatable clamp arm, comprising:
- a main body;
- a rotary driving section which has a rotary driving source that is rotated in accordance with an electric signal;
- a pump mechanism which includes a pressure oil-sucking/discharging mechanism that sucks/discharges pressure oil by a rotary driving force of said rotary driving source;
- a cylinder mechanism provided with a piston, said piston being displaceable in an axial direction when pressed by said pressure oil fed from said pump mechanism;
- a retaining mechanism which retains said pressure oil;
- and
- a toggle link mechanism which converts rectilinear motion of said piston driven by said cylinder mechanism into a rotary motion of said clamp arm,
- said rotary driving section, said pump mechanism, said cylinder mechanism, and said retaining mechanism being integrally assembled to said main body.
5 more elements
Dependencies are inferred from the claim text.