Abstract: A rotary disk type storage device has a casing comprised of a box-shaped base casing, whose one side is opened, and a cover casing closing the open side of the base casing, in which accommodated are a magnetic disk, a spindle for rotating the magnetic disk, and an actuator for moving a magnetic head slider to a desired position on the magnetic disk. A film member having an adhesive layer is bonded to an outside of an edge portion of the casing to reduce vibrations of a side wall of the cover casing and therefore vibration-induced noise.

Abstract: A bearing device where a sliding bearing rotatably supporting a shaft is molded with an inexpensive sintered material, three asymmetrical circular arc-shaped radial bearings are formed in the inner peripheral surface of the shaft, taper land-shaped thrust bearings are formed in the opposite end surfaces of the radial bearing surface, T-shaped bubble removing means which is constituted by axial and radial flow passages formed in the shaft opposed to the radial bearing is provided, and magnetic fluid is used as a lubricant. A magnetic disk unit using the bearing device is also disclosed.

Abstract: A magnetic disk apparatus has a rail support which supports guide rails for guiding a carriage on which heads are mounted. The rail support is positioned outside a magnet of a voice coil motor and mounted on a frame. The guide rails are disposed so as to extend across a cavity in the rail support and have their opposite end portions attached to the rail support. The guide rails do not vibrate even if the voice coil motor receives a reaction during head seeking, whereby the head positioning accuracy can be improved and the storage capacity can be increased. The rigidity of the guide rails is increased by supporting the opposite ends of the guide rails. This structure and a coaxial arrangement of a motor coil allow the overall length of the carriage and, hence, the overall size of the apparatus to be reduced.

Abstract: A magnetic disk storage system in which magnetic disk drives can be cooled effectively, and even if a blast device for one of he magnetic disk drives fall into trouble or cease operation, a temperature rise of this magnetic disk drive can be suppressed to the minimum. For this purpose, in the magnetic disk storage system containing a plurality of magnetic disk drives, blase devices ae provided for each of the disk drives, and the disk drives are separated by partitions in which openings are formed so that the cooling air can be passed between adjacent magnetic disk drives.

Abstract: In a magnetic disk apparatus, a head positioning signal is written on a magnetic disk, the written positioning signal is read out, the read positioning signal is demodulated to produce a position signal, and a data write/read head is positioned to a predetermined track in responses to the produced position signal. A head positioning signal is written into write tracks adjacent to each other along a radial direction of the magnetic head, the positioning signal is read out by tracing a read track bridging the write tracks, and a positioning error of the head positioning signal is generated from a shift of the read positioning signal with respect to the read track. Furthermore, the position signal is over-written by actuating the write head in the radial direction according to the positioning error.

Abstract: In a voice coil motor having a voice coil, and a magnetic circuit which generates a magnetic flux traversing the voice coil; the magnetic circuit includes a yoke which is divided so as to form a plurality of magnetic paths traversing the voice coil and which is provided with hollows, and adjustment members which are inserted into the hollows so as to adjust the magnetic fluxes of the magnetic paths independently of one another.

Abstract: A magnetic disk system utilizes both of voice coil motor and a piezoelectric element provided on a head supporting arm to precisely position a head to a predetermined position on a disk. The piezoelectric element is built in the distal end portion of the head supporting arm and is restricted in respect of its movement by a resilient mechanism which has low rigidity in the driving direction of the piezoelectric element and high rigidity in the other directions. The resilient mechanism is formed by pairs of doubled parallel leaf springs so arranged that each pair is disposed on either side of the piezoelectric element.

Abstract: A webbing retractor wherein a take-up shaft supporting a webbing worn by a seat occupant of a vehicle is rotated in a webbing taking-up direction by an urging force of a take-up mechanism connected to the take-up shaft. The rotation of the take-up shaft in a webbing drawing-out direction is stopped upon detection of a predetermined acceleration of the vehicle, whereupon the take-up shaft is moved by the webbing drawing-out force to lock an intermediate portion of the webbing drawn out from the take-up shaft. The take-up shaft and the take-up mechanism are connected together via a pair of mutually meshing gears. One of the gears is moved together with the take-up shaft in a state in which its engagement with the other gear is maintained when the take-up shaft is moved. Accordingly, the take-up mechansim is not moved when the take-up shaft is moved.

Abstract: A webbing drive apparatus for an automatic seat belt apparatus in which a webbing is automatically fitted around an occupant by driving one end of the webbing which comprises a screw plate with which one end of a wire for driving the webbing is engaged and which has portions for contact with a drum so as to be rotated through the contact portions by the rotational force of the drum. It is as well as moved in the direction of the rotational axis of the drum, whereby the wire is spirally wound around the drum. Each of the contact portions have a bent portion which is bent substantially at right angles with respect to the rotational direction of the drum. The rotational force of the drum is therefore transmitted to the screw plate through these bent portions.

Abstract: In an assistant apparatus for fastening a webbing, which is adapted to move an intermediate portion of a webbing in the front direction of a vehicle for aiding an occupant of the vehicle in fastening the webbing around the occupant, a reach arm is provided which supports the webbing passing through the reach arm. The reach arm is capable of being swung in the front and rear directions of the vehicle and is always urged in the front direction by a return spring. The reach arm can be held in a rearward position by a cam engaging therewith, the cam being disengaged by a solenoid when the solenoid is energized. Therefore, a complicated gearing mechanism is unnecessary for driving the reach arm.

Abstract: An acceleration sensor for detecting acceleration of at least predetermined magnitude. The sensor has a first lever capable of swinging when acceleration of at least predetermined magnitude occurs, and a second lever capable of swinging to come into contact with the first lever when vertical acceleration of at least predetermined magnitude occurs so as to limit the swinging of the first lever. Therefore, the first lever is prevented from swinging when vertical acceleration of at least predetermined magnitude occurs.

Abstract: A driving-force transmitting structure applied to an automatic seat belt apparatus having a slide piece moved along a guide rail by a driving force and a slider adapted for supporting a webbing for restraining an occupant, the slider being capable of moving in response to the movement of the slide piece so as to apply the webbing around an occupant. This driving-force transmitting structure is adapted to transmit the driving force from the slide piece to the slider. The slide piece and the slider overlap each other. The slider is provided with opposed surfaces which face end surfaces of the slide piece facing in the direction of movement of the slide piece.

Abstract: An apparatus for driving an intermediate portion of a webbing for use in a seatbelt system for restraining an occupant of a vehicle by means of a webbing having one end accommodated in a webbing accommodating device through a biasing force is arranged to withdraw the webbing from the accommodating device in opposition to the biasing force. Accordingly, when an occupant is to apply the webbing to himself by withdrawing it from the accommodating device, the webbing can be withdrawn and applied with a small manual force.

Abstract: A webbing driving device which is capable of maintaining a constant gap or space between a wire and a sheet around the periphery of a drum. The webbing driving device includes a rotatable drum, a screw plate to which the wire is connected and is movable in the axial direction of the drum when rotated together with the drum, a wire driver for winding the wire around the drum in helical fashion, a first sloping surface formed on the screw plate parallel to the direction in which the wire is wound around the drum so as to define one end of the wire winding area and a second sloping surface formed parallel to the direction the wire is wound around the drum so as to define the other end of the wire winding area. The gap is formed by the first and second sloping surfaces. The gap between the wire and the two sloped surfaces is constant around the periphery of the drum, and the gap between the wire and the sheet can be set to a constant value around the periphery of the drum.

Abstract: Disclosed is an automatic seatbelt apparatus which is capable of automatically applying, or canceling the application of, a webbing around an occupant of a vehicle, wherein a limit switch for detecting that a slider, which guides the webbing along a guide rail between a stopping position on the forward side and a stopping position on the rearward side of the vehicle, has arrived at the stopping position on the forward side of the vehicle is disposed in such a manner as not to hamper any further movement of the slider toward the front of the vehicle. Accordingly, the stopping position of the slider on the rearward side of the vehicle can be changed regardless of the stopping position at which the slider is located.

Abstract: An apparatus for reducing webbing wind-up force has a ratchet which rotates together with a take-up shaft for winding up a webbing, a rocker arm with a pawl engageable with the ratchet, a bidirectional solenoid for causing the rocker arm to pivot, and a snap action spring. When an occupant has the webbing fastened, the bidirectional solenoid is activated for a predetermined period of time so that the pawl is engaged with the ratchet, and thereafter, the rocker arm is held in its engagement position by the action of the snap action spring. When the occupant unfastens the webbing, the bidirectional solenoid is activated for a predetermined period of time in the direction opposite to that in the above operation so that the pawl is disengaged from the ratchet, and thereafter, the rocker arm is held in its disengagement position by the action for the snap action spring. Thus, it is possible to reduce the amount of electric power consumed by the bidirectional solenoid.

Abstract: A seatbelt system for a vehicle which enables a webbing to be automatically fastened to the body of an occupant includes a tape subjected to driving force derived from a motor. The distal end portion of the tape is provided with a plurality of neck portions. Projecting members are provided on a slider which retains the webbing. The projecting members are fitted into the neck portions, respectively, so that the driving force from the motor is transmitted to the slider while being distributed among a plurality of portions of the tape. Thus, even when the tape has a relatively small width, the driving force is reliably transmitted to the slider and hence the webbing.

Abstract: Disclosed is an automatic seatbelt apparatus which is capable of automatically applying, or canceling the application of, a webbing around an applicant of a vehicle as a slider to which one end of the webbing is retained along a guide rail disposed in the vicinity of the roof of the vehicle is moved in the longitudinal direction of the vehicle via a flexible elongated member driven by the driving force of a driving means. A switch, when located in its webbing-application position, is adapted to stop a motor by detecting the application of the webbing and is so disposed at this time as to be capable of moving in accordance with the bending of a flexible guide member. Accordingly, since the switch can be moved when the guide member bends, the webbing-application position can be altered even in the webbing-applied state.

Abstract: A controller for automatically effecting disengagement of a buckle device includes a moving means which moves a lock plate engaged with a tongue plate. When a predetermined period of time has elapsed after the acceleration acting on the vehicle exceeds a predetermined value, the controller controls the moving means such that the tongue plate and the lock plate are automatically disengaged from each other. It is possible to automatically disengage the tongue plate from the buckle device in an emergency situation, such as collision or overturn, of the vehicle.

Abstract: In a webbing locking device locking an occupant restraining webbing, a movable locking member opposed to a fixed locking member is movable in a direction of a webbing drawing-out and approach to the webbing and trigger means causes the webbing to abut on a portion of the movable locking member, so that the webbing is locked by the fixed and movable locking members. In the locking of the webbing a webbing drawing-out force is converted to a locking, or clipping, force of the webbing by the movable and fixed locking member.