Tape cassette lid opening device for magnetic recording tape driving apparatus

A tape cassette lid opening device for a magnetic recording tape driving apparatus provided with a tape cassette loading section for receiving a tape cassette and a capstan projecting from the bottom surface of said tape cassette loading section, said tape cassette lid opening means comprising:

• a tape cassette lid pivotally mounted on said magnetic recording tape driving apparatus and pivotable between a first position, in which the tape cassette lid covers said tape cassette loading section, and a second position, in which the tape cassette lid permits the loading of said tape cassette into said tape cassette loading section and unloading of said tape cassette from said tape cassette loading section, said tape cassette lid further including a bottom facing surface facing said bottom surface of said tape cassette loading section when said tape cassette lid is in said first position;
• and
• a tape cassette lid opening means including a motor;
• and driving means coupled to said motor and to said tape cassette lid for causing the pivotal motion of said tape cassette lid from said first position to said second position via the driven force of said motor;
• said driving tape means of said tape cassette lid opening means including a rotatable member having an end surface extending substantially at right angles to said bottom facing surface of the tape cassette lid and rotatable in a plane substantially at right angles to said bottom facing surface of the tape cassette lid;
• a protuberance portion projecting from said end surface of said rotatable member and rotatable in union with said rotatable member and in frictional contact with said bottom facing surface of said tape cassette lid;
• and a power transmission means coupled to said rotatable member and to said motor for transmitting the output of said motor to said rotatable member to cause rotation of said rotatable member;
• and
• said power transmission means including a uni-directional clutch means for transmitting the output of said motor to said rotatable member only when said motor is rotated in one predetermined direction;
• and an output stop means coupled to said motor and operated by one of said rotatable member and said tape cassette lid to stop the output of said motor when said tape cassette lid is brought to said second position.