Oral Care Implement And Refill Head Thereof

An oral care implement comprising:

• a handle comprising:
• a gripping portion having a housing defining an internal chamber and a distal end surface;
• a rocker unit mounted within the internal chamber so as to be rockable relative to the housing about a fulcrum, the rocker unit comprising:
• a stem extending from the distal end surface of the gripping portion and configured to be detachably coupled to an oral care refill head;
• a motor operably coupled to the stem to impart movement to the stem;
• and
• a motor chassis supporting the motor and comprising a contact element;
• and
• a power source positioned within the internal chamber;
• a control unit operably coupled to the motor and the power source, the control unit comprising an actuator element, the control unit configured to initiate generation of a user perceptible signal upon the actuator element being actuated;
• and
• wherein upon a pressure being applied to the oral care treatment tool that exceeds a pressure threshold, the rocking unit is altered from a normal position to an excessive-pressure position in which the contact element actuates the actuator element.