Abstract: A composition that contains a polycarbonate resin and a recycled carbon fiber, and demonstrates mechanical strength which is close to that of a case where the virgin carbon fiber is blended. The composition contains 100 parts by mass of a polycarbonate resin having a terminal hydroxy group content of 150 to 800 ppm; and 5 to 65 parts by mass of a recycled carbon fiber which is a heated product of a carbon fiber-reinforced resin. A pellet formed of the composition. A molded article formed of the composition. A method for producing the composition. The method includes feeding to an extruder 100 parts by mass of a polycarbonate resin having a terminal hydroxy group content of 150 to 800 ppm, and 5 to 65 parts by mass of a recycled carbon fiber which is a heated product of a carbon fiber-reinforced resin; and melt kneading the extruded polycarbonate resin.

Abstract: An electric lock includes an input switching clutch for selectively transmitting electric or manual driving force to an output line. The input switching clutch includes an outer ring that rotates together with an electrically driven input gear, and an inner ring which rotates together with an output gear. Wedge-shaped spaces are defined between the outer ring and the inner ring. Two rollers are mounted in each wedge-shaped space and are biased toward narrow portions of the wedge-shaped space by a coil spring also mounted in the wedge-shaped space. The input switching clutch further includes an unlocking piece having crossbars inserted at both circumferential ends of the respective wedge-shaped spaces, and coupled to a manually driven input shaft so that rotation of the manually driven input shaft can be transmitted thereto; and a torque transmission mechanism for transmitting the rotation of the manually driven input shaft to the inner ring.

Abstract: A driving force transmission mechanism includes a worm gear unit as a brake disposed between a driving motor and an electrically driven input gear, and is configured such that when a driving force is applied from the driving motor to the electrically driven input gear through the worm gear unit, an outer ring which rotates together with the electrically driven input gear becomes locked to an inner ring through rollers so that the driving force is transmitted to an output gear, which rotates together with the inner ring, and when a driving force is applied to a manually driven input shaft, the outer ring and the inner ring are unlocked from each other by an unlocking piece which rotates together with the manually driven input shaft, and thereafter, the driving force is transmitted to the inner ring and the output shaft.

Abstract: An electric lock includes an input switching clutch for selectively transmitting the electric or manual driving force to the output line. The input switching clutch includes an outer ring that rotates together with an electrically driven input gear, and an inner ring which rotates together with an output gear. Wedge-shaped spaces are defined between the outer ring and the inner ring. Two rollers are mounted in each wedge-shaped space and are biased toward the narrow portions of the wedge-shaped space by a coil spring also mounted in the wedge-shaped space. The input switching clutch further includes an unlocking piece having crossbars inserted at both circumferential ends of the respective wedge-shaped spaces, and coupled to a manually driven input shaft so that its rotation can be transmitted thereto; and a torque transmission mechanism for transmitting the rotation of the manually driven input shaft to the inner ring.

Abstract: An annular sensor holder (5) has an axial end (15) including a protrusion (18). The axial end (15) is fitted in a circumferential groove (7), such as a seal groove, of a bearing race (2) fitted to a stationary member (9) so that the sensor holder (5) can slide in the circumferential direction relative to the bearing race (2). In this state, the sensor holder (5) is coupled to the stationary member (9) by a fixing arrangement (19). Thus, when the bearing race (2) creeps, the sensor holder (5) slides relative to the bearing race (2) and does not rotate relative to the stationary member (9). This prevents breakage of connecting wires.

Abstract: A machine component diagnosis system that has high convenience and performing highly accurate malfunction diagnosis. This system includes: an information terminal, a server connected to the information terminal via a communication line network; a vibration sensor that measures vibration of a diagnosis subject; and an additional sensor that measures one characteristic of the diagnosis subject. The additional sensor includes a temperature sensor or an AE sensor. The temperature sensor measures, as the one characteristic, temperature of the diagnosis subject. The AE sensor measures, as the one characteristic, an acoustic emission wave (AE wave).

Abstract: A spring type one-way clutch includes an outer ring rotatable about a rotary shaft and having an inner tubular portion, and a clutch spring mounted in the outer ring. The clutch spring includes a large-diameter coil spring portion, a transition portion connected to the winding end of the large-diameter coil spring portion, and a small-diameter coil spring portion connected to the radially inner end of the transition portion and wound in the opposite direction from the large-diameter coil spring portion. When the outer ring is rotated in the direction opposite the winding direction of the large-diameter coil spring portion, the large- and small-diameter coil spring portions are radially compressed and pressed against the inner tubular portion and the rotary shaft, allowing the rotary shaft to rotate together with the outer ring. The transition portion spirals radially inwardly in the winding direction of the large-diameter coil spring portion.

Abstract: A device configured to actuate a driven member by driving a driving motor includes a brake which does not consume electric power and which can be easily mounted in the device. A speed reducer is mounted in the device, and includes a reduction mechanism for transmitting the rotation of the driving motor toward the driven member after reducing its speed, and a locking type reverse input shutoff mechanism, as the brake, which is configured to mechanically lock up when reverse input torque is applied from the driven member while the driving motor is not being driven, thereby retaining the position of the driven member. The reduction mechanism and the reverse input shutoff mechanism are combined to constitute a single unit.

Abstract: An inspection method is provided which allows an operating state of a rotating machine component such as a bearing to be easily inspected by using a dedicated sensor and a portable information terminal. A general-purpose portable information terminal (2), and a dedicated sensor (3) connected thereto are used. Detection data detected by the dedicated sensor (3) is transmitted from the terminal (2) to a server (6), and the server (6) performs data processing and transmits a processing result to the terminal (2). The terminal (2) displays the result on a screen (21a). A detection time period during which the detection data supplied by the dedicated sensor (3) has been detected at one time is less than one rotation of a rotating machine component (1). It is possible for an operator to determine a malfunction in the component (1) on the basis of a plurality of results.

Abstract: The bearing unit includes a bearing 1 and bearing unit forming component parts such as, for example, a housing 11 in which the bearing is incorporated, a shaft 19, covers 3 and 4 and a sealing member 10 for the housing. In this bearing unit, at least one of the bearing unit forming component parts is fitted with an IC tag 15 and an IC tag 16 is also fitted to the bearing 1. The IC tag 16 fitted to the bearing unit forming component part is of a read/write type whereas the IC tag 16 fitted to the bearing 1 is of a read-only type. The read-only IC tag 16 fitted to the bearing 1 is recorded with information necessary to correlate the bearing unit forming component part, to which the IC tag 15 is fitted, with the bearing unit 1.

Abstract: Provided is a monitoring system including a diagnostic device (2), a monitoring terminal (3), and a measurement device (4) with communication function connected via a communication network (1), thereby allowing a measurement condition and a diagnosis condition to be easily changed through the monitoring terminal, and allowing appropriate measurement and diagnosis even when a usage condition of a monitor subject is changed. The diagnostic device (2) includes: a diagnosis module (17) for performing malfunction diagnosis for a monitor subject (5) based on measurement data in accordance with a diagnosis condition; and a diagnosis condition changing module (19) which allows the diagnosis condition to be changed from the monitoring terminal (3). The monitoring terminal (3) generates and transmits the measurement condition instruction information (F1) to the measurement device (4), and transmits a diagnosis condition (F2) to the diagnostic device (2).

Abstract: A spring type one-way clutch includes an outer ring rotatable about a rotary shaft and having an inner tubular portion, and a clutch spring mounted in the outer ring. The clutch spring includes a large-diameter coil spring portion, a transition portion connected to the winding end of the large-diameter coil spring portion, and a small-diameter coil spring portion connected to the radially inner end of the transition portion and wound in the opposite direction from the large-diameter coil spring portion. When the outer ring is rotated in the direction opposite the winding direction of the large-diameter coil spring portion, the large- and small-diameter coil spring portions are radially compressed and pressed against the inner tubular portion and the rotary shaft, allowing the rotary shaft to rotate together with the outer ring. The transition portion spirals radially inwardly in the winding direction of the large-diameter coil spring portion.

Abstract: A bearing unit is provided in an inner peripheral portion of a sensor housing in which a sensor portion is installed. The sensor portion includes a sensor mounting substrate and a sensor fixed to this sensor mounting substrate. The sensor housing is provided with an axially extending substrate mounting groove formed in a direction of a chord which will define the circular section of the outer peripheral surface of the sensor housing. The sensor mounting substrate is mounted on this substrate mounting groove to install the sensor portion within the sensor housing.

Abstract: A spring type one-way clutch includes an outer ring rotatable about a rotary shaft and having an inner tubular portion, and a clutch spring mounted in the outer ring. The clutch spring includes a large-diameter coil spring portion, a transition portion connected to the winding end of the large-diameter coil spring portion, and a small-diameter coil spring portion connected to the radially inner end of the transition portion and wound in the opposite direction from the large-diameter coil spring portion. When the outer ring is rotated in the direction opposite the winding direction of the large-diameter coil spring portion, the large- and small-diameter coil spring portions are radially compressed and pressed against the inner tubular portion and the rotary shaft, allowing the rotary shaft to rotate together with the outer ring. The transition portion spirals radially inwardly in the winding direction of the large-diameter coil spring portion.

Abstract: A rotation transmission device includes coaxial input and output shafts (1 and 2), a pair of opposed bevel gears (3 and 4) rotatably mounted around the input shaft (1), and an intermediate bevel gear (5) meshing with the opposed bevel gears (3 and 4). The output shaft (2) and one of the opposed bevel gears (3) are rotationally fixed to each other. A first one-way clutch (6) is provided through which the rotation of the input shaft (1) is transmitted to the one of the opposed bevel gears (3). A second one-way clutch (7) is provided through which the rotation of the input shaft (1) in the reverse direction is transmitted to the other of the opposed bevel gears (4). Thus, the output shaft (2) can be rotated in the normal direction irrespective of whether the input shaft (1) is rotated in the normal direction or in the reverse direction.

Abstract: It is an object of the present invention to provide a sliding bearing which has a simple construction and thus can be produced easily and at a low cost and yet eliminates the need for the use of a heat insulation sleeve and the like and is capable of maintaining a frictional torque to a low extent. A sliding bearing (1) has an inner ring (2), an outer ring (3), and a sliding contact member (4) interposed therebetween. The inner ring (2) has a curved surface (2a) formed along an outer circumference thereof and a shaft-receiving hole which fits on a supporting shaft along an inner circumference thereof. The sliding contact member (4) is a molded body, made of resin composition, which has a curved surface (4a) making sliding contact with the curved outer circumferential surface (2a) of the inner ring (2) with the curved surface (4a) being opposed to the curved outer circumferential surface (2a).

Abstract: A railroad vehicle bearing malfunction sensing system which is able to accurately determine a malfunction of an axle bearing in each vehicle of a train. The system includes: a plurality of data loggers mounted on a plurality of axle bearings, respectively, in at least one vehicle of a single-line train, each logger including: a detection/recording to detect vibration of the bearing and record detected vibration detection data; and a wireless communication to receive a recording start command for starting recording of the vibration detection data by the detection/recording; and a simultaneous recording start command to simultaneously and wirelessly transmit recording start commands to the loggers respectively corresponding to the bearings.

Abstract: A portable-terminal-using inspection method for a rotating machine component allows an operating state of a rotating machine component such as a bearing to be easily inspected by using a popularized portable information terminal and a dedicated sensor that supplies detection information to the terminal. The state of the rotating machine component is detected by the sensor. Detection data regarding the detected state is supplied from the sensor to the terminal. Data processing is performed on the detection data in the terminal or a server connected to the terminal via a communication line, by using data processing software and specification data for the model number associated with the component, and a result of the data processing is displayed on a screen of the terminal.

Abstract: A bearing assembly with a sensor, includes an annular, synthetic resin sensor holder supported on an outer race using a circumferential groove of the outer race so as to be strongly fixed in position by a spring member having circumferential half-split elastic recovery portions. The spring member is a square sectional wire and includes a main portion fitted in an annular groove of the sensor holder, and opposite end portions that circumferentially protrude from the annular groove and are located inside an open recess of the sensor holder. The opposite end portions of the spring member overlap axially when fitted in the annular groove, and abut and are deflected when one of the end portions is shifted to remove the overlapping. Forces caused by elastic recovery of the deflected end portions increase the force of the main portion pushing the sensor holder in a radially outward direction.

Abstract: It is an object of the present invention to provide a sliding bearing which has a simple construction and thus can be produced easily and at a low cost and yet eliminates the need for the use of a heat insulation sleeve and the like and is capable of maintaining a frictional torque to a low extent. A sliding bearing (1) has an inner ring (2), an outer ring (3), and a sliding contact member (4) interposed therebetween. The inner ring (2) has a curved surface (2a) formed along an outer circumference thereof and a shaft-receiving hole which fits on a supporting shaft along an inner circumference thereof. The sliding contact member (4) is a molded body, made of resin composition, which has a curved surface (4a) making sliding contact with the curved outer circumferential surface (2a) of the inner ring (2) with the curved surface (4a) being opposed to the curved outer circumferential surface (2a).