Patent ID: 9046386
Filing Date: 2015-06-02
Classification: G01D,Y10T

Abstract:
1. A structural unit for a rotary encoder to measure rotary motions about an axis of rotation, comprising: a graduation carrier made of glass fastened to a mount that includes a recess; a positioning element fastened to said graduation carrier by a first material connection, wherein said first material connection is an adhesive connection, which is embodied between said graduation carrier and said positioning element by a first adhesive that is disposed axially between said graduation carrier and said positioning element, and wherein said positioning element is disposed in said recess, and said recess is dimensioned such that said recess positions said positioning element in a radial direction perpendicular to said axis of rotation without play; and a second material connection is provided between said graduation carrier and said mount, wherein said second material connection is an adhesive connection radially remote from said axis of rotation and with a second adhesive that is disposed axially between 1) an end face of said mount that extends perpendicular to said axis of rotation and 2) a surface of said graduation carrier extending parallel to said end face of said mount.