Camshaft phaser with resilient cover plate

A camshaft phaser, comprising:

• a stator arranged to receive rotational torque, configured to rotate around an axis of rotation, and defining a recess and a groove;
• a rotor arranged to be non-rotatably connected to a camshaft and configured to rotate with respect to the stator;
• a spiral spring disposed in the recess;
• and,
• a resilient cover plate:
• including an inner surface defining a central opening through which the axis of rotation passes, the inner surface disposed in the groove;
• enclosing the spiral spring in the recess;
• and,
• compressively engaging the stator in a radially inward direction.

A camshaft phaser, comprising:

• a stator arranged to receive rotational torque, configured to rotate around an axis of rotation, and defining a recess and a groove;
• a rotor arranged to be non-rotatably connected to a camshaft and configured to rotate with respect to the stator;
• a spiral spring disposed in the recess and including:
• a first spring end non-rotatably connected to the rotor;
• and,
• a second spring end non-rotatably connected to the stator;
• and,
• a resilient cover plate including:
• a radially innermost surface defining a central opening through which the axis of rotation passes, the radially innermost surface disposed in the groove;
• a first plate end facing in a first circumferential direction;
• and,
• a second plate end facing the first plate end in a second circumferential direction, opposite the first circumferential direction, the first plate end and the second plate end bounding a gap in the first circumferential direction, wherein:
• a spring force of the resilient cover plate urges:
• the radially innermost surface into contact with the stator;
• and,
• the first plate end and the second plate end toward each other;
• and,
• the spiral spring is located between the stator and the resilient cover plate.