Workpiece retention mechanism for oral care device

An oral care device, comprising:

• a workpiece;
• a handle assembly configured to receive the workpiece;
• a fluid pathway formed axially from the handle assembly through the workpiece when connected;
• a connection mechanism comprising:
• a collet having a plurality of axially extending beams arranged radially external to the handle assembly, each beam having a respective protrusion extending therefrom through an opening in the handle assembly to a position radially inward of an inner surface of the handle assembly when in a default configuration;
• a latching surface on each protrusion configured to prevent the workpiece from being withdrawn from the handle assembly in a first axial direction when the connection mechanism is in a locked configuration in which the latching surface is engaged with a detent of the workpiece;
• a receiving surface on each protrusion axially opposite from the latching surface that is configured to receive a leading edge of the workpiece during insertion of the workpiece in a second axial direction opposite to the first axial direction;
• a collar arranged radially about the collet and configured to transfer an axial force exerted from a user of the oral care device in the second axial direction to the collet;
• and
• an angled surface of the handle assembly bordering the opening that is engageable with an axial end of the collet and configured to convert the axial force exerted on the collet into radially outward deflection of the beams to transition the connection mechanism to an unlocked configuration in which the protrusions are positioned radially outward from the detent and the latching surfaces are disengaged from the workpiece;
• wherein the beams are configured to return to the default configuration after the axial force is released due to strain energy in the beams resulting from the radially outward deflection.