Tape guide device having vibrator with free end portion
AssigneeSony Corporation
InventorEtsuro Saito
Life of this patent
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Abstract
A tape guide device comprising a pipe-shaped guide member for guiding a tape, an ultrasonic vibrator for vibrating the guide member by standing waves, and a support member for holding the guide member, wherein one end of the ultrasonic vibrator is kept free while the other end thereof is attached fixedly to a vibrational loop on the peripheral surface of the guide member, and vibrational nodes of the guide member are held by the support member, hence stabilizing the characteristic of standing-wave vibration.
Claims11
A tape guide device for guiding a moving tape in a predetermined state with reduction of the friction between the tape and a guide member by generating standing-wave vibration in the guide member, the tape guide device comprising:
- guide means shaped into a pipe and serving to guide the moving tape in a predetermined state while retaining the tape in sliding contact with the peripheral surface thereof;
- freestanding vibratory means having first and second spaced-apart end portions, the first end portion being unrestrained and the second end portion being shaped with a concave curve corresponding to a peripheral surface of said guide means and attached fixedly to the center of a vibrational loop (P) on the peripheral surface of said guide means, so as to induce standing-wave vibration defining a plurality of nodes in said guide means;
- and
- support means for holding said guide means at said nodes and leaving said guide means elsewhere free to vibrate.
A tape guide device for guiding a moving tape in a predetermined state with reduction of the friction between the tape and a guide member by generating standing-wave vibration in the guide member, the tape guide device comprising:
- guide means shaped into a pipe and serving to guide the moving tape in a predetermined state while retaining the tape in sliding contact with the peripheral surface thereof;
- vibratory means having first and second spaced-apart end portions, the first end portion being kept free and the second end portion being attached fixedly to a vibrational loop on the peripheral surface of said guide means, so as to induce standing-wave vibration defining a plurality of nodes in said guide means;
- and
- support means for holding said guide means at said nodes;
- wherein said support means comprises a support shaft inserted into said guide means so as to hold the same from inside, and a mount member having flanges to hold said support shaft at opposite ends of said guide means;
- `wherein said mount member has a vibrational housing portion for preventing a rotary displacement of said guide means by loosely retaining said vibratory means therein;
- and
- further comprising washer members for holding the vibrational nodes at opposite ends of said guide means, the washer members being mounted in the flanges of said mount member.
Dependencies are inferred from the claim text.