Hydraulic oil control valve and valve timing adjustment device

A hydraulic oil control valve for a valve timing adjustment device, the valve timing adjustment device being configured to adjust valve timing of a valve and fixed to an end portion of one shaft that is a drive shaft or a driven shaft, the driven shaft being configured to selectively open and close the valve with a driving force transmitted from the drive shaft, the hydraulic oil control valve being coaxially disposed with a rotational axis of the valve timing adjustment device and configured to control a flow of a hydraulic oil supplied from a hydraulic oil supply source, the hydraulic oil control valve comprising:

• a tubular sleeve;
• a spool that has an end portion in contact with an actuator and that is slidably moved by the actuator in an axial direction within the sleeve in a radial direction, wherein
• the sleeve includes:
• an inner sleeve disposed outside of the spool in the radial direction;
• and
• an outer sleeve defining therein an axial hole extending in the axial direction, the inner sleeve being inserted into the axial hole,
• the outer sleeve is configured to be fixable to the end portion of the one shaft by an axial force applied to the outer sleeve in the axial direction,
• the inner sleeve has an inner sleeve end portion that is an end portion of the inner sleeve in the axial direction away from the actuator, and
• the inner sleeve end portion extends beyond the outer sleeve away from the actuator in the axial direction.