Patent ID: 11879757
Assignee: TAMAGAWA SEIKI CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. An encoder installing method using a spigot unit, using:
a shaft end (51) which is a spigot inserting portion (50) of a motor shaft (6) of a motor (5);
a disk unit (11) which is fitted in an outer periphery (51a) of the shaft end (51) as a first spigot fitting portion (41) and includes a disk (2);
a screw hole (11A) which is formed at a shaft center of the shaft end (51) along a shaft direction (P) of the motor shaft (6);
a fixing screw (30) which is disposed in the disk unit (11) and is screwed into the screw hole (11A); and
an encoder main unit (12) which is disposed in the disk unit (11) and includes a light-receiving element (14) and an LED (13) disposed sandwiching the disk (2), wherein
the encoder main unit (12) is inserted into the disk (2) from the side (P1) which is a direction intersecting orthogonally with the shaft direction (P).