Two-motor co-located gimbal-based dual stage actuation disk drive suspensions with motor stiffeners

A dual stage actuation flexure comprising:

• a flexure comprising a pair of spring arms, a pair of struts, and a tongue between the spring arms;
• a pair of motors mounted on the flexure, each motor comprising a top side and a bottom side opposite the top side;
• a pair of stiffeners respectively mounted on the top sides of the motors, wherein the bottom sides of the motors face the flexure;
• adhesive located between the stiffeners and the motors and bonded to the stiffeners and the motors;
• and
• a slider mounting, wherein electrical activation of the motors bends the pair of struts to move the slider mounting while the stiffeners limit the degree of bending of the motors during the electrical activation.

A dual stage actuation flexure comprising:

• a flexure;
• a pair of motors mounted on the flexure;
• a pair of stiffeners respectively mounted on the motors;
• adhesive located between the stiffeners and the motors and bonded to the stiffeners and the motors, each stiffener mounted over a single side of the motor on which the stiffener is mounted, each stiffener only in contact with the adhesive;
• and
• a slider mounting, wherein electrical activation of the motors moves the slider mounting while the stiffeners limit the degree of bending of the motors during the electrical activation.

A dual stage actuation flexure comprising:

• a flexure comprising a gimbal, the gimbal comprising a pair of spring arms, a tongue between the spring arms, and a pair of linkages respectively connecting the pair of spring arms to the tongue;
• a pair of motors mounted on the gimbal;
• a pair of stiffeners respectively mounted on the motors, each stiffener stiffer than the portion of the gimbal on which the respective motor and stiffener are mounted;
• and
• a slider mounting, wherein electrical activation of the motors bends the pair of linkages to move the slider mounting about a tracking axis while the stiffeners limit the degree of bending of the motors during the electrical activation.