Disk clamping device
View Patent ↗A disc cramp device which holds a disc by sandwiching it by a turn table and a cramper, according to the present invention, includes a cramper arm which is rotated in a direction to move close to the turn table and a direction to move away from it, a plate spring member, a part of which is fixed to the cramper arm, which lifts the cramper during an uncramping time, and which presses an upper center of the cramper in a direction of the turn table during a cramping time. It is constructed so that by providing tongue pieces for pressing the upper center of the cramper at a tip end portion of the cramper arm, the plate spring member presses the cramper while it is held at both sides during the uncramping time, and the plate spring member is pressed by the fixing member to be elastically deformed during the uncramping time. Consequently, according to the disc cramp device of the present invention, the number of components is reduced, and the height of the space for transferring the disc can be made large with respect to the height of the entire device, in addition to which, the driving force in a cramping and uncramping operations can be made small.
1. A disc clamp device for holding a disc by sandwiching it by a turn table and a clamp ( 6 ), the disc clamp device comprising:
a clamp arm capable of rotating in a direction moving close to the turn table and a direction moving away from it;
a plate spring member ( 5 ), a part of which is fixed to the clamp arm, and which has first tongue pieces ( 5 b , 5 b ′) located under a flange ( 6 b ) of the clamp ( 6 ) for lifting the clamp by the first tongue pieces ( 5 b , 5 b ′) upon an unclamping state and pressing an upper center of the clamp in a direction of the turn table during a clamping state;
second tongue pieces ( 4 a , 4 a ′) provided at the clamp arm to press third tongue pieces ( 5 a , 5 a ′) of the plate spring member on both sides of a portion pressing a center projection ( 6 a ) and
wherein the plate spring member ( 5 ) is configured so that the plate spring member 5 is pressed against a fixing member ( 8 ) and elastically deformed by the reaction caused by the pressure against the fixing member ( 8 ), upon the unclamping state.
2. A disc clamp device for holding a disc by sandwiching it by a turn table and a clamp ( 6 ), the disc clamp device comprising:
a clamp arm capable of rotating in a direction moving close to the turn table and a direction moving away from it;
a plate spring member ( 5 ), a part of which is fixed to the clamp arm, and which has tongue pieces ( 5 b , 5 b ′) located under a flange ( 6 b ) of the clamp ( 6 ) for lifting the clamp by the tongue pieces ( 5 b , 5 b ′) upon an unclamping state and pressing an upper center of the clamp in a direction of the turn table during a clamping state;
tongue pieces ( 4 a , 4 a ′) provided at the clamp arm to press another tongue pieces ( 5 a , 5 a ′) of the plate spring member on both sides of a portion pressing a center projection ( 6 a ), and
wherein the plate spring member ( 5 ) is configured so that the clamp ( 6 ) is pressed against the plate spring member ( 5 ) and elastically deformed by the reaction caused by the pressure against the plate spring member ( 5 ), upon the unclamping state.