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US 2019/0091880 A1Published application
Micro-gripper with one-piece structure
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorJohan Andre
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AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorJohan Andre
Estimating the term…
The micro-gripper includes a support (301) to which are articulated fingers (304) and an actuating diaphragm (305), adjusting the spacing of the fingers (304). The support being circular, the fingers (304) may be arranged in any number around it, and the diaphragm (305) delimits a chamber with the support (301) assembled to an equipment (18) for distributing fluids, the pressure of which elastically deforms the diaphragm (305) and controls a simultaneous movement of variations in spacings of the fingers (304). If the diaphragm is conical and the fingers link up all around, an independence of the movements of the fingers remains, which is invaluable for correctly gripping objects and avoiding excessive efforts. Application to the gripping of objects, which can be very small and fragile, with a determined and moderate force.
1) Micro-gripper with one-piece structure including at least two gripping fingers (4, 104, 204, 304) with variable spacing, a support (1, 301) to which the fingers are joined by flexible couplings (16) and an actuator connected to the fingers and deformable to adjust the spacing of the fingers, characterised in that the actuator is a flexible diaphragm (5, 305), and the support comprises a continuous sleeve (2) that can be coupled in a leak tight manner to an equipment (18) for supplying pressurised fluid and in which the diaphragm (5, 305) is mounted by a continuous contour (10, 312).
Dependencies are inferred from the claim text.