Patent ID: 8622452

Claim:
A robot comprising: two claw portions that face each other to grip an object therebetween, wherein each of the two claw portions comprises: a base plate in which a base surface is parallel to a moving direction of the two claw portions with respect to a rocking axis; a first rib that is formed on the base plate at a proximal end, that has a proximal-end-side surface to grip the object, and that projects in a normal direction from the base surface; a second rib that is formed on the base plate at a distal end, that has a distal-end-side surface to grip the object, and that projects in the normal direction from the base surface; a recess that is configured with the proximal-end-side surface and the distal-end-side surface; and the base plate is formed between the proximal-end-side surface and the distal-end-side surface, when each of the two claw portions is seen in the normal direction: a point where a first straight line including the proximal-end-side surface intersects a second straight line including the distal-end-side surface is a base point, a line that passes through a proximal edge of the first rib and a distal edge of the second rib is an orthogonal line, and a line that passes through the base point and that is orthogonal to the orthogonal line is a base line, an angle α of a corner made between the base line and the second straight line is greater than 0 degrees and less than 90 degrees, an angle β of a corner made between the orthogonal line and the first straight line is greater than 0 degrees and less than 90 degrees, and a distance d between the base point and the orthogonal line along with the base line is greater than 0.