Disc-clamping mechanism and disc driving apparatus
AssigneeJVC KENWOOD Corporation
InventorMotoharu Ogawa
Life of this patent
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Abstract
A simplified disc-clamping mechanism is provided to decrease the number of parts and processes of the assembly of a disc-clamping mechanism. The disc-clamping mechanism has a clamping plate sandwiching a disc by cooperating with a turntable, and a clamp base rotatably holding the clamping plate. The clamping plate has a surface plate pressing a disc toward the turntable, a small-radius body portion having an outer diameter smaller than that of the surface plate portion, and a flange portion protruding more than an end portion in an axial direction of the small-radius body portion and being parallel to the surface plate portion. The clamp base is integrally formed while including a thin-plate shaped holding portion, a stopper piece, and a bent portion which extends from the holding portion.
Claims7
A disc-clamping mechanism comprising:
- a clamping plate sandwiching a disc by cooperating with a rotatable turntable;
- and
- a clamp base which rotatably holds the clamping plate, allowing movement between a clamp-position where the clamping plate contacts with the disc on the turntable, and a clamp-released position where the clamping plate is isolated from the disc,
- wherein the clamping plate comprises
- a surface plate portion pressing the disc toward the turntable when the clamp base is in the clamp-position,
- a small-radius body portion placed concentrically with the surface plate portion and having an outer diameter smaller than that of the surface plate portion, and
- a flange portion being parallel to the surface plate portion and protruding more than an end portion in an axial direction of the small-radius body portion,
- wherein the clamp base is integrally formed while including
- a thin-plate shaped holding portion interposed between the surface plate portion and the flange portion on the clamping plate,
- a stopper piece facing an end surface of the flange portion in the clamp-position, and
- a bent portion extending from the holding portion and having an elongated hole through which the flange portion is passed from the stopper piece side to the holding portion side in a diameter direction of the flange portion,
- wherein the holding portion has a cut hole which receives the small-radius body portion, the cut hole being adjacent to the elongated hole of the bent portion.
Dependencies are inferred from the claim text.