US 6,204,993 B1Granted

Reel drive mechanism for a cassette tape player

OwnerTadahiro Ikutainventor

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Abstract

To reduce the number of parts and simplify the structure by permitting the forward-rotation components and the reverse-rotation components to share a mechanism of transmitting the driving force to a pair of reel blocks 42F,42R. A pair of capstans 41F,41R respectively serving for forward rotation and reverse rotation and a pair of reel blocks 42F,42R respectively serving for forward rotation and reverse rotation are provided. One of the capstans, i. e. the capstan 41F, is provided with a low-speed gear 48, while the other capstan 41R is provided with a high-speed gear 49. The reel blocks 42F,42R are respectively provided with reel gears 50F,50R. A transmission changeover means 51 is installed to transmit the driving force from the low-speed gear 48 to the appropriate gear selected between the reel gears 50F,50R according to the direction in which the tape is run when the system is in either the forward mode or the reverse mode, and transmit the driving force from the high-speed gear 49 to the appropriate gear selected between the reel gears 50F,50R according to the direction of rotation of the tape when the system is in either the fast-forward mode or the rewinding mode.

Claims39

Dependent claims

A reel drive mechanism for a cassette tape player comprising:

a pair of capstans, said pair of capstans providing for a respective forward rotation and a respective reverse rotation;
a driving means for driving said pair of capstans in said respective forward rotation and said respective reverse rotation;
a pair of reel blocks, said pair of reel blocks providing for said respective forward rotation and said respective reverse rotation;
a pair of reel gears, said pair of reel gears being integrally rotated with said pair of reel blocks;
a low-speed gear being integrally rotated and coaxial with one of said pair of capstans;
a high-speed gear being integrally rotated and coaxial with the other of said pair of capstans;
and
a transmission changeover means for transmitting a driving force from said low-speed gear to one of said pair of reel gears corresponding to a direction in which a cassette tape is desired to run when said driving means is in either a forward mode position or a reverse mode position, said transmission changeover means for transmitting a driving force from said high-speed gear to the other of said pair of reel gears corresponding to a direction in which said cassette tape is fed when said driving means is in either a fast-forward mode position or a rewinding mode position.

5 more elements

Dependencies are inferred from the claim text.