Telescope touch pen for use in handwriting recognition device, has intermediate tube received in hollow chamber of retainer tube, and end tube comprising oil sealant ring plugged at outer circumference of contact friction and stop part

摘要

The pen has a retainer tube (10) with an open end (11) formed for insertedly connecting the tube (10) with a pen head (80) and a narrowed end (12) formed for rotatably connecting the tube with a plug connector piece (60). An intermediate tube (20) is received in a hollow chamber of the tube (10), and includes an open end and a narrowed end that is formed for rotatably connecting the intermediate tube with a plug connector piece (40). An end tube (30) has an oil sealant ring (70) that is plugged at an outer circumference of a contact friction and stop part (62).