| CPC B25J 15/0683 (2013.01) [B25J 15/0033 (2013.01)] | 6 Claims |
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1. A gripping device that grips a workpiece, the gripping device comprising:
an elastically deformable partition film;
a deformation unit that elastically deforms the partition film;
a cylindrical gripping portion that extends integrally from a peripheral edge of the partition film and is elastically deformed in a central axis direction along with elastic deformation of the partition film by the deformation unit to wrap the workpiece;
a gripping member including a cylindrical casing and the partition film that vertically partitions inside of the casing, and the gripping member having an opening portion in an upper portion thereof; and
a case member configured to close the opening portion of the gripping member,
wherein the deformation unit is connected to a sealed space defined by the case member, the casing, and the partition film to evacuate the sealed space,
wherein a lower portion of the casing partitioned by the partition film constitutes the gripping portion, and an upper portion of the casing partitioned by the partition film constitutes a connecting portion that connects the gripping member to the case member, and
a deformation portion serving as a starting point of elastic deformation of the gripping portion is provided at a boundary portion of the connecting portion with the gripping portion, and
wherein the deformation portion includes a plurality of vertical slits provided along a circumferential direction, and a multistage groove in which a plurality of circumferential grooves is vertically arranged.
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