Throttle grip device

A throttle grip device comprising:

• an interlocking member capable of rotating with a throttle grip of a vehicle;
• a rotation angle detecting unit capable of detecting a rotation angle of the throttle grip by detecting a rotation angle of the interlocking member;
• a return spring configured as a torsion coil spring which has a first end locked to the interlocking member and urges the throttle grip and the interlocking member in a rotation direction toward initial positions when the throttle grip is rotationally operated;
• and
• a holding member which rotatably holds the interlocking member while positioning the interlocking member and holding a second end of the return spring,
• wherein an engine of the vehicle can be controlled according to the rotation angle of the throttle grip detected by the rotation angle detecting unit, and
• wherein the holding member has a main body portion and a bent portion that is bent from the main body portion and configured to lock the second end of the return spring, the bent portion having a hook shape.