Abstract A cassette tape deck for use with a tape cassette having a magnetic tape wound on reels in a casing, which is designed to record signals on the tape or reproduce them therefrom based upon loading of the cassette, and in which at least one guide pin having slidably mounted thereon a sliding member biased toward the upper end of the guide pin and the sliding member has formed therein a groove or aperture extending perpendicular to the sliding direction thereof and has associated therewith a movable member biased toward the guide pin, whereby when the cassette has been loaded on the tape deck at a predetermined position, the groove or aperture of the sliding member receives the movable member to detect the loading of the cassette at the predetermined position and actuation of tape driving means is allowed based upon the detection of the loading of the cassette; in which left and right braking members attached to a lever associated with left and right actuating levers for urging left and right pinch rollers into rotary contact with left and right capstans with the tape being gripped therebetween respectively and for pressing the magnetic head against the tape is selectively brought into contact with left and right wheels mounted on left and right reel shafts, whereby the tape is driven across the magnetic head while being subjected to required back tension; and in which the tape is driven to the right (or left) under such conditions that left and right pinch rollers are held in rotary contact with left and right capstans with the tape being gripped therebetween respectively and the contact pressure of the left (or right) pinch roller to the left (or right) capstan is held lower than that of the right (or left) pinch roller to the right (or left) capstan, whereby the tape is driven across the magnetic head while being subjected to required back tension.
Apparatus for detecting the loading of a cassette on a cassette tape deck; said cassette having a magnetic tape wound on reels having central apertures respectively in a casing; said casing having a first major face having formed therein at least capstan receiving apertures, reel drive shaft receiving apertures and guide pin receiving holes and a second major face having formed therein at least a magnetic head receiving window and pinch roller receiving windows and being substantially perpendicular to said first major face; said deck having a capstan, a pinch roller making rotary contact with said capstan, a magnetic head, a reel drive shaft and a guide pin, said capstan, said reel drive shaft and said guide pin being so positioned as to be inserted into said capstan receiving apertures, said reel drive shaft receiving aperture and said guide pin receiving hole of said cassette respectively only when said cassette is loaded on said deck; and said magnetic head being movable between operative and inoperative positions and being inserted into said magnetic head receiving window at its operative position only when said cassette is loaded on said deck; a sliding member slidably mounted on said guide pin, said sliding member being biased by a first spring means toward the upper end of said guide pin and having a groove formed therein to extend perpendicular to a direction of sliding of said sliding member, and a member movably mounted on said deck and biased by a second spring means toward said guide pin and having an engaging member engageable with said groove of said sliding member, whereby operative loading of said cassette on said deck is detected based upon sliding of said sliding member against said first spring means and engagement of said engaging member with said groove of said sliding member.
Claim 2
Dependent Claim
301 words
Apparatus for detecting the loading of a cassette on a cassette tape deck; said cassette having a magnetic tape wound on reels having central apertures respectively in a casing; said casing having a first major face having formed therein at least capstan receiving apertures, reel drive shaft receiving apertures and guide pin receiving holes and a second major face having formed therein at least a magnetic head receiving window and pinch roller receiving windows and being substantially perpendicular to said first major face; said deck having a capstan, a pinch roller making rotary contact with said capstan, a magnetic head, a reel drive shaft and a guide pin, said capstan, said reel drive shaft and said guide pin being so positioned as to be inserted into said capstan receiving apertures, said reel drive shaft receiving aperture and said guide pin receiving hole of said cassette respectively only when said cassette is loaded on said deck; and said magnetic head being movable between operative and inoperative positions and being inserted into said magnetic head receiving window at its operative position only when said cassette is loaded on said deck; a sliding member slidably mounted on said guide pin, said sliding member being biased by a first spring means toward the upper end of said guide pin and having a groove formed therein to extend perpendicular to a direction of sliding of said sliding member, and a member movably mounted on said deck and biased by a second spring means toward said guide pin and having an engaging member engageable with said groove of said sliding member, whereby operative loading of said cassette on said deck is detected based upon sliding of said sliding member against said first spring means and engagement of said engaging member with said groove of said sliding member.
Claim 3
Dependent Claim
66 words
Apparatus according to claim 1, in which said movable member is mounted on a movable arm having an idler, said idler being positioned on said movable arm to make rotary contact with a wheel Coupled with said capstan driving means and a wheel coupled with said reel drive shaft driving means only when said engaging member is in engagement with said groove of said sliding member.