Abstract: A mechanism for controlling parallelism between a pinch roller and capstan shaft, wherein a support arm shaft rotatably supports a support arm. A wall is provided on the base board close to the support arm shaft. The support arm shaft is inclined toward the wall. The wall is fitted with pinch roller parallelism-controlling mechanism which is pressed against the inclined support arm shaft to push it in the opposite direction to that of its inclination.

Abstract: A connection device comprises a main body (14) including a power source (12) and a first unit (10) having two terminals to which power is supplied from the power source (12); and a connection body (24) including a second unit (20) having two terminals to which power is supplied from the power source when the connection body is connected to the main body.

Abstract: A tape guide mechanism for a tape recorder comprises a pair of first tape guides severally attached to the free end portions of a head lever which has a rotation center in the middle thereof, each of the first tape guides being located on the opposite side of a magnetic head on each side of the head lever to a pinch roller on a pinch roller lever and on the side where its corresponding magnetic head lies. Further, a pair of second tape guides are disposed on the pinch roller lever so as to embrace the pinch roller from both sides thereof, thereby partially covering the pinch roller.

Abstract: Any one of a number of heads of a cassette tape recorder of the automatic reverse type is selected by alternately bringing each of the magnetic heads into a position in which the magnetic head comes in contact with a magnetic tape, by pivoting a head lever in response to a movement of a plunger. The head lever has at least one magnetic head at each end thereof about the center of pivotal movement. A pinch roller is brought into a position in which the pinch roller on a pinch roller lever, comes in contact with the magnetic tape, by pivoting the pinch roller lever in response to the movement of the plunger.

Abstract: A support mechanism for a tape recorder head lever includes first and second guide bars respectively facing each end of the head lever, and positioned between the head lever and base board to slidably support the head lever. The first guide bar is fixed to either one of a strip part extending from one end of the head lever in the direction in which the head lever slides, or the base board. The second guide bar is supported for movement by a forked portion formed on either one of the other end of the head lever or the base board, thus allowing the head lever to have a certain latitude of sidewise movement as the head lever slides on the guide bars.BACKGROUND OF THE INVENTIONThis invention relates to a cassette tape recorder, and more particularly to a support mechanism for a head lever of a cassette tape recorder wherein the head lever is slidably supported on a base board.

Abstract: A tape recorder has paired reel shafts and paired flywheels. A tape-driving apparatus comprises a motor provided with a drive shaft, flywheel drive pulley and reel shaft drive pulley both fitted to the motor drive shaft and made rotatable therewith, a first endless belt stretched across the paired reel shafts and pressed against the reel shaft drive pulley in one direction, and a second endless belt stretched across the paired flywheels and pressed against the flywheel drive pulley in the opposite direction to the one direction. The force with which the first and second endless belts are pressed against the motor drive shaft is prevented from being applied to the motor drive shaft in the form of a deflecting load.

Abstract: A method for setting magnetic head of a cassette tape recorder includes biasing a head lever and a pinch roller lever to move in a direction toward a tape of a tape cassette, and interrupting the movement of the head lever and the pinch roller lever by stop member until the tape cassette is loaded. The stop member is removed from the path of movement of the head lever and the pinch roller lever by pressing the stop member with the tape cassette or a cassette holder when the tape cassette is inserted in the cassette holder, and the cassette holder is moved to bring the tape cassette to an operating position.

Abstract: A tape transport mechanism includes a supply reel base and a take-up reel base each having a rotary gear and arranged at a given distance apart, a rotatable lever arranged between the reel bases, a rotating gear rotatably supported by the rotatable lever and having its shaft arranged at a position deviated from a line connecting the centers of both reel bases, the rotating gear being slightly meshed with the rotary gear of each reel base under the condition of positioning the rotatable lever at the center of both reel bases, and a drive source for driving the rotating gear in forward and reverse directions.

Abstract: An automatic reverse tape recorder comprises a normally closed switch disposed in an automatic reverse circuit. This normally closed switch is operated jointly with the actuation of a recording mode-setting attachment to open the automatic reverse circuit and close a circuit for an automatic stop or end alarm operation or circuits for both operations. As a result, the automatic reverse mechanism is actuated only for the reproduction mode, but not for the recording mode. At the recording mode, the arrival of the terminal end of a tape is detected by an automatic stop or end alarm operation or both operations.

Abstract: A magnetic head for vertical magnetization recording comprises a pair of magnetically coupled limbs one of which has a reduced reluctance, the other limb comprises a laminated structure comprising a magnetizable material of a greatly reduced thickness held between nonmagnetic materials. The exposed end face of the magnetizable material is disposed for abutment against a magnetic record medium to serve as a record/playback pole.

Abstract: Disclosed is a reel driving method for a tape recorder wherein a rotatable idler is caused to engage a desired one of a pair of reel shafts by rocking a rockable support lever to drive the desired reel shaft, the idler being mounted on the support lever so that the rotatory force of a capstan shaft is transmitted to the idler. A pair of such idlers are disposed on both sides of the rocking center of the support lever so that the support lever rocks around the rocking center correspondingly to the rotating direction of the capstan shaft, which can be reversed in rotation, thereby causing one of the pair of idlers to engage the desired reel shaft.

Abstract: A cassette tape recorder comprises a multi-function eject lever rotatably mounted on a base board. The eject lever is provided with a guide pin for pushing a cassette toward the heads by engagement with an engagement hole of a cassette held in a cassette holder, and a pair of lock members engageable with the corresponding engagement members of the cassette holder to lock it in an inserted position when it is shifted from an eject position. A cam for rotating the erroneous erasure preventing lever by being pressed against the lateral side thereof is formed on the eject lever in the vicinity of one of the lock members.

Abstract: A cassette tape recorder is provided with a kangaroo pocket type cassette holder. The cassette holder comprises a fitting member which is slidably mounted on a base board and is made to move in parallel with the base board, for example, by two guide pins, and a cassette holder body swingably attached to the fitting member. The fitting member is pushed together with the cassette holder body from a rising to a falling position against the urging force of the kick spring, and is suddenly brought to rest by a stopper while being shifted from a falling to a rising position by the accumulated urging force of the kick spring, thereby causing the cassette holder body to swing on the fitting member.

Abstract: The pulse signal generating device for a tape recorder comprises a rotary plate attached to a rotating shaft portion of the tape recorder which rotates in connection with tape running. The rotary plate has a central axis, and rotates together with the rotating shaft portion around the central axis. The outer peripheral surface of the rotating body includes at least one first surface portion with a higher reflection factor and at least one second surface portion with a lower reflection factor. The first and second surface portions adjoin each other along the circumferential direction, and are located at different distances from the central axis. The pulse signal generating device further comprises a photo-reflector facing the outer peripheral surface of the rotary plate. The photo-reflector includes a light emitting element for emitting light toward the outer peripheral surface and a light receiving element to receive light reflected from the outer peripheral surface.

Abstract: A reel shaft device comprises a reel hub engaging member; a rotating member capable of rotating relatively to the reel hub engaging member; a driving member having a circumferential surface facing a circumferential surface of the rotating member and capable of rotating eccentrically with the reel hub engaging member, the driving member to be rotated by a rotary power supply means; a plurality of rolling members disposed between the circumferential surfaces so as to be able to rotate; a cam member disposed on the surface of said rotating member, the cam member holding the rolling members in cooperation with the surface of the driving member to rotate the rotating member together with the driving member in one direction when the driving member rotates in the one direction, and releasing the hold of the rolling members to allow the rotating member to rotate independently of the driving member when the driving member rotates in the other direction; and a variable rotation transmitting means formed of felt and cap

Abstract: A tape recorder employing a miniature tape cassette and capable of automatic reversible operation is provided, including a pair of record/playback magnetic heads. One of the heads is disposed so as to be aligned with a track or tracks on a magnetic tape which are available for record or playback operation during the time the tape runs in a forward direction while the other head is disposed so as to be aligned with a track or tracks on the tape which are available for record or playback operation during the time the tape runs in a reverse direction.

Abstract: A capstan drive type magnetic recording tape drive apparatus of this invention has a swinging member which is swingably mounted to a chassis of the apparatus. The swinging member rotates in one direction when a magnetic recording tape wound around a pair of reels engages a pair of reel shafts of the apparatus travels in one direction, and engages with one of a pair of slipping members rotatably mounted and selectively coupled to the pair of reel shafts by a frictional engagement, and prohibits rotation of the slipping member. The swinging member rotates in the other direction when the tape travels in the other direction, and engages with the other of slipping members, and prohibits rotation of the slipping member. To prohibit the rotation of one of the slipping members causes a backtension of constant strength, and eliminates wow and flutter.

Abstract: An automobile magnetic tape playing apparatus includes a magnetic tape driving unit with a magnetic head and an amplifier unit carried on an automobile. These units are mechanically and electrically connected and disconnected to each other so that the magnetic tape driving unit may be carried out from an automobile by separating it from the amplifier unit, if necessary.

Abstract: In the cassette disclosed, a cassette housing with magnetic tape has openings at the front surface thereof for receiving a magnetic head, a pinch roller and the like. A pair of tape pad springs for pressing against the head of the openings are integrally formed with the housing.

Abstract: A drive disk is constituted by a reel gear. A one-way clutch comprises a substantially circular clutch plate acting as a driven disk, along the periphery of which vortically shaped notches are equiangularly arranged. Magnetic balls of the one-way clutch are received in a space defined between the reel gear and driven disk. The balls are always attracted by a magnetic member such as a permanent magnet so as to be pressed against the reel gear.