Abstract: A clutch device for a magnetic recording/reproducing apparatus for transmitting power for a tape conveying regardless of the quantity of tape wound around a reel, including a central shaft installed on a main chassis, a drive pulley connected to the central shaft, and having a cylindrical pulley holder portion, said drive pulley being rotated by receiving power from a driving source, an up/down gear having a cylindrical gear holder unit with the outer diameter thereof being smaller than the inner diameter of the pulley holder portion and ascendable/descendible along the central shaft, and a clutch spring placed between the inner surface of the pulley holder portion and the outer surface of the gear holder unit for selectively transmitting power with a certain torque from the driving pulley to the up/down gear in accordance with the rotational direction of the driving pulley.

Abstract: A clutch device for a magnetic recording/reproducing apparatus for transmitting power for a tape conveying regardless of the quantity of tape wound around a reel, including a rotating central shaft installed on a main chassis, a drive pulley connected to the rotating central shaft, and having a cylindrical pulley holder portion, said drive pulley being rotated by receiving power from a driving source, an up/down gear having a cylindrical gear holder unit with the outer diameter thereof being smaller than the inner diameter of the pulley holder portion and ascendable/descendible along the rotatable central shaft, and a clutch spring placed between the inner surface of the pulley holder portion and the outer surface of the gear holder unit for selectively transmitting power with a certain torque from the driving pulley to the up/down gear in accordance with the rotational direction of the driving pulley.

Abstract: An idler device of the magnetic recording/reproducing apparatus is disclosed having the construction that an idler arm is inserted to the side of a clutch shaft which is installed at a lower surface of a main chassis. Without an extra construction for the assembly, a snap engagement is possibly made, so that a workability of an assembly working is improved and the number of parts can be reduced, and thus, a production cost can be reduced. In addition, the assembly of an idler gear is completed as a plate spring is fixed to an idler shaft in a state that the idler gear is inserted in the idler shaft of an idler arm. Thus, the assembly working is relatively facilitated, and a production cost can be reduced with the simple construction. Moreover, since the plate spring is installed in a state of being fixed at the protrusion bar by the stopper, the relative position of the plate spring is precisely set with respect to the neighboring parts, so that an operation reliability can be remarkably improved.

Abstract: A clutch device for a magnetic recording/reproducing apparatus for transmitting power for a tape conveying regardless of the quantity of tape wound around a reel, including a rotating central shaft installed on a main chassis, a drive pulley connected to the rotating central shaft, and having a cylindrical pulley holder portion, said drive pulley being rotated by receiving power from a driving source, an up/down gear having a cylindrical gear holder unit with the outer diameter thereof being smaller than the inner diameter of the pulley holder portion and ascendable/descendable along the rotatable central shaft, and a clutch spring placed between the inner surface of the pulley holder portion and the outer surface of the gear holder unit for selectively transmitting power with a certain torque from the driving pulley to the up/down gear in accordance with the rotational direction of the driving pulley.

Abstract: In a clutch device for a magnetic recording/reproducing apparatus transmitting a power for traveling of a tape regardless of a quantity of the tape wound around a reel, a clutch device for a magnetic recording/reproducing apparatus comprises a rotating centrical shaft installed on a main chassis, a driving pulley installed to the rotating cetnrical shaft, rotating by receiving a power of a driving source and having a cylindrical pulley holder portion, an up/down gear having a cylindrical gear holder unit having an outer diameter smaller than an inner diameter of the pulley holder portion and ascendable/descendable along the rotating centrical shaft, and a clutch spring placed between the inner surface of the pulley holder portion and the outer surface of the gear holder unit and selectively transmitting a power with a certain torque from the driving pulley to the up/down gear in accordance with the rotational direction of the driving pulley, accordingly a production cost can be reduced by minimizing the numbe

Abstract: An idler device of the magnetic recording/reproducing apparatus is disclosed having the construction that an idler arm is inserted to the side of a clutch shaft which is installed at a lower surface of a main chassis. Without an extra construction for the assembly, a snap engagement is possibly made, so that a workability of an assembly working is improved and the number of parts can be reduced, and thus, a production cost can be reduced. In addition, the assembly of an idler gear is completed as a plate spring is fixed to an idler shaft in a state that the idler gear is inserted in the idler shaft of an idler arm. Thus, the assembly working is relatively facilitated, and a production cost can be reduced with the simple construction. Moreover, since the plate spring is installed in a state of being fixed at the protrusion bar by the stopper, the relative position of the plate spring is precisely set with respect to the neighboring parts, so that an operation reliability can be remarkably improved.

Abstract: A structure for pressing a cassette in a magnetic record and playback machine which includes a cassette holder having guide posts containing fixing slots on both lateral sides of the cassette holder, a driving arm having concave slots in which the guide posts are inserted, and an elastic supporting member surrounding the upper side and both lateral sides of the cassette holder. The upper part of the elastic supporting member has one or more folds which extend downward and both ends of the elastic supporting member are placed in the fixing slots of the guide posts, and both ends of the elastic supporting member are inserted into the concave slots of the driving arm along with the guide posts.

Abstract: A clutch device for a magnetic recording/reproducing apparatus for transmitting power for a tape conveying regardless of the quantity of tape wound around a reel, including a rotating central shaft installed on a main chassis, a drive pulley connected to the rotating central shaft, and having a cylindrical pulley holder portion, said drive pulley being rotated by receiving power from a driving source, an up/down gear having a cylindrical gear holder unit with the outer diameter thereof being smaller than the inner diameter of the pulley holder portion and ascendable/descendable along the rotatable central shaft, and a clutch spring placed between the inner surface of the pulley holder portion and the outer surface of the gear holder unit for selectively transmitting power with a certain torque from the driving pulley to the up/down gear in accordance with the rotational direction of the driving pulley.