Apparatus for performing multiple functions in a data storage device using a single electro-mechanical device

A data storage device for receiving a removable disk cartridge comprising:

• an eject member that engages with the disk cartridge and moves from a forward position to a rearward position upon insertion of the disk cartridge into the device;
• an actuator movably mounted within said data storage device for moving a read/write head of the data storage device over a recording medium in the disk cartridge;
• an eject latch lever movably mounted in said data storage device, said eject latch lever being operable to move between a latched position in which the eject latch lever engages the eject member and latches the eject member in said rearward position to maintain said disk cartridge in said data storage device, and an unlatched position in which the eject member is released;
• a first spring coupled to said eject latch lever for biasing said eject latch lever in a first direction toward said latched position;
• a head locking lever movably mounted in said data storage device, said head locking lever being operative to move between an engaged position in which the head locking lever engages the actuator and locks the actuator in place to prevent movement thereof, and a disengaged position in which the actuator is released;
• a second spring coupled to said head locking lever for biasing said head locking lever in said first direction toward said engaged position;
• and
• a single electro-mechanical device having a drive shaft that moves from an extended position to a retracted position, the drive shaft having an operating end that engages said eject latch lever and said head locking lever and moves said levers against the respective biasing forces of the first and second springs as the drive shaft moves from said extended position to said retracted position, said operating end engaging said head locking lever and moving said head locking lever a predetermined distance to an intermediate position of said drive shaft before engaging said elect latch lever,
• said electro-mechanical device being responsive to a first current sufficient to move the drive shaft against the biasing force of said second spring but insufficient to move the drive shaft against the combined biasing forces of the first and second springs, and being responsive to a second current, greater than the first current, sufficient to move the drive shaft against the combined biasing forces of the first and second springs,
• whereby the first and second currents can be selectively applied to said electro-mechanical device to move said head locking lever independently of said eject latch lever.

Apparatus for performing multiple functions in a data storage device comprising:

• a first movable member movably mounted in the data storage device, said first movable member being biased in a first direction with a first biasing force and performing a first function in said data storage device;
• a second movable member movably mounted in the data storage device, said second movable member being biased in said first direction with a second biasing force and performing a second function in said data storage device;
• and
• a single electro-mechanical device having a drive shaft that moves from an extended position to a retracted position in response to a current applied thereto, the drive shaft having an operating end that engages said first and second movable members and that moves both of said members against the respective first and second biasing forces as the drive shaft moves from said extended position to said retracted position, said operating end engaging said second member and moving said second member a predetermined distance to an intermediate position of said drive shaft before engaging said first member,
• said electro-mechanical device being responsive to a first current sufficient to move the drive shaft against said second biasing force but insufficient to move the drive shaft against a combination of the first and second biasing forces, and being responsive to a second current, greater than the first current, sufficient to move the drive shaft against the combination of the first and second biasing forces,
• whereby the first and second currents can be selectively applied to said electro-mechanical device to move said drive shaft between said extended, intermediate and retracted positions to thereby move said second member independently of said first member.