Valve timing control device

A valve timing control device comprising:

• a driving-side rotational member rotating synchronously with a crankshaft in an internal combustion engine;
• a driven-side rotational member disposed coaxially with the driving-side rotational member and rotating synchronously with a camshaft for opening and closing a valve in the internal combustion engine;
• a fluid pressure chamber formed by the driving-side rotational member and the driven-side rotational member;
• a partitioning portion provided in at least one of the driving-side rotational member and the driven-side rotational member so as to partition the fluid pressure chamber into an advance chamber and a retard chamber;
• and
• a projecting and retracting mechanism having a hole portion formed in one of the driving-side rotational member and the driven-side rotational member, a cylindrical sleeve accommodated in the hole portion, a projecting and retracting member accommodated in the sleeve and capable of projecting and retracting with respect to the other of the driving-side rotational member and the driven-side rotational member, and a fitting hole formed in the other of the driving-side rotational member and the driven-side rotational member such that the projecting and retracting member can be fitted to the fitting hole when the projecting and retracting member projects, the projecting and retracting mechanism constraining a relative rotational phase of the driven-side rotational member with respect to the driving-side rotational member at a predetermined phase when the projecting and retracting member is fitted to the fitting hole,
• wherein when the projecting and retracting member retracts from the fitting hole, an end face of the projecting and retracting member on a side opposite to a side facing the fitting hole comes into surface contact with a bottom surface of the hole portion, and
• a first chamfered surface is formed in a circumferential direction at an inner-circumferential corner of an end of the sleeve on a side opposite to a side facing the fitting hole, and
• a plurality of first chamfered surfaces are formed dispersedly in the circumferential direction.