Abstract: A flow rate control valve includes a housing having an accommodation chamber in communication with oil passages, and a spool accommodated in the accommodation chamber movably in a reciprocating manner. The housing includes a bolt for fastening a movable member of a variable valve timing mechanism, and a sleeve inserted in an insertion portion provided in the bolt and having the accommodation chamber. The bolt is provided with a port through which the oil passages communicate with the insertion portion. The sleeve is provided with a through hole penetrating the sleeve. Furthermore, an annular protrusion and a recess are provided as a phase adjustment portion that adjusts a phase of rotation of the sleeve with respect to the bolt to a phase in which the port coincides in position with the through hole and holds the phase of rotation of the sleeve with respect to the bolt equal thereto.

Abstract: A flow rate control valve includes a housing having an accommodation chamber in communication with oil passages, and a spool accommodated in the accommodation chamber movably in a reciprocating manner. The housing includes a bolt for fastening a movable member of a variable valve timing mechanism, and a sleeve inserted in an insertion portion provided in the bolt and having the accommodation chamber. The bolt is provided with a port through which the oil passages communicate with the insertion portion. The sleeve is provided with a through hole penetrating the sleeve. Furthermore, an annular protrusion and a recess are provided as a phase adjustment portion that adjusts a phase of rotation of the sleeve with respect to the bolt to a phase in which the port coincides in position with the through hole and holds the phase of rotation of the sleeve with respect to the bolt equal thereto.