A motor installed on a wall of a cassette housing operates a placement gear and a rotating member for safely placing a cassette holder on a deck and then also operates a ring gear, which is installed on the deck, in order to load video tape for reproduction, thereby making it possible that both the action of placing the cassette holder on the deck and the action of loading the tape for reproduction can be achieved by using only one motor. A combination of a sector gear and a cam or a disc with a built-in spring can also be used in order to lock the cassette holder properly after the cassette holder, with the cassette held therein, is placed on the deck.
An idling rotation mechanism used in a video tape recorder (VTR) to mount and dismount a video cassette tape (VCT) by using only a loading motor. The VCT is mounted and dismounted by moving a holding pin, connected to a VCT holder, along a slot in a support plate. The pin is connected to a idling rotation mechanism that is connected to the loading motor. To prevent the VCT from becoming jammed in the VTR because of excessive rotation of the loading motor, a timing gear in the idling rotation mechanism idles after the pin has been partially moved in the slot.
A magnetic recording/playback apparatus in which rotational torque from the drive shaft of a single motor is capable of being transmitted to a cassette loading mechanism and a tape loading mechanism includes a worm secured to the drive shaft and a worm wheel for being meshed freely with the worm, the worm wheel being provided with a toothless portion. The drive shaft is coupled to the cassette loading mechanism via the worm wheel. During operation of the tape loading mechanism by the drive shaft, the toothless portion of the worm wheel is brought into position opposite the worm wheel so that a driving force is no longer applied to the cassette loading mechanism. When a cassette is ejected, the toothless portion of the worm wheel is shifted after a tape loading operation, thereby reengaging the worm wheel and worm to actuate the cassette loading mechanism.
In a cassette loading apparatus used for carrying a tape cassette from an unloading position to a loading position, cutouts are made in side plates to be continuous to L-shaped guide slots made therein so that the cassette holder unit having outwardly projecting pins can be inserted from the top when assembling the same with the side plates. After the cassette holder unit is assembled, a top plate having projecting plates may be attached to the side plates so that the cutouts are filled with the projecting plates. The projecting plates have rounded corners for smooth movement of the projecting pins along the L-shaped guide slots.
A power transmitting apparatus utilizing a clutch in a magnetic recording/reproducing apparatus which simplifies the construction of a tape deck and loading unit by attaching an idle rotation device to the deck loading unit. The invention includes reducing gears, clutch members, clutch switching means, power transmitting device, wherein the power transmitting device is made to operate in cooperation with the cassette setting device. According to the invention, the power transmitting apparatus is more simple in structure but correct operation can be obtained and the reliability of the function of the product can be increased.
A tape drive of the type for withdrawing a magnetic tape together with a leader block connected to the leading end thereof out of a tape cartridge so as to record and reproduce the information onto or off of said magnetic tape. In addition to driving sources for driving a supply reel disposed in the tape cartridge and a take-up reel, a single power source is provided for accomplishing the opening or closing of a door of the housing, the vertical movement of the housing, the displacement of the leader block and the pushing or ejection of the tape cartridge out of the housing.
