Recording and reproducing apparatus

A disk rotation drive apparatus for rotating a disk, comprising:

• a chucking member having a flat surface for receiving a disk;
• a motor for rotating said chucking member;
• an elevating portion for elevating and lowering said motor, the elevating portion including a first elevating member and a second elevating member elevated and lowered in unison with said first elevating member;
• a holding member for holding said motor, said holding member coupled to said first elevating member;
• a motor positioning portion having a guide member for guiding elevation of said motor, said motor coupled to said first elevating member;
• a plurality of support shafts for rotatably supporting said first elevating member relative to said second elevating member at first and second positions, respectively, said plurality of support shafts provided substantially at a center position of opposite sides of said first elevating member, and said second elevating member configured to rotatably hold said support shafts;
• and
• an operating portion configured to operate said plurality of support shafts to elevate and lower said motor.

A disk rotation drive apparatus including a chucking member with a flat surface on which a disk rests, a motor for rotating said chucking member and a holding member for holding said motor, comprising:

• an elevating portion for elevating and lowering said motor, the elevating portion including a substantially rectangular first elevating member and a substantially U-shaped second elevating member elevated and lowered in unison with said first elevating member, said first elevating member rotatably coupled to said second elevating member at first and second positions;
• a holding member for holding said motor, said holding member coupled to said first elevating member;
• a motor positioning portion having a guide member for guiding elevation of said motor, said motor coupled to said first elevating member;
• a plurality of support shafts for rotatably supporting said first elevating member relative to said second elevating member at first and second positions, respectively, said plurality of support shafts provided substantially at a center position of opposite sides of said first elevating member, and said second elevating member configured to rotatably hold said support shafts;
• and
• an operating portion configured to operate said plurality of support shafts for engaging with said first and second elevating members to elevate and lower said motor.

A method of rotating a disk, comprising the steps of:

• providing a chucking member having a flat surface for receiving a disk;
• providing a motor for rotating said chucking member;
• providing a first elevating member and a second elevating member, said second elevating member elevated and lowered in unison with said first elevating member;
• coupling a holding member to said first elevating member, said holding member configured to hold said motor, and said motor coupled to said first elevating member;
• providing a motor positioning portion having a guide member for guiding elevation of said motor;
• providing a plurality of support shafts for rotatably supporting said first elevating member relative to said second elevating member at first and second positions, respectively, said plurality of support shafts positioned substantially at a center of opposite sides of said first elevating member, and said second elevating member configured to rotatably hold said support shafts;
• and
• operating said plurality of support shafts to elevate and lower said motor.