Abstract: A gear changer of a power transmitting device includes an input shaft to which a rotational force is inputted from an engine, an output shaft for outputting the rotational force to a rear wheel, and a plurality of speed change gear pairs for transmitting the rotational force from the input shaft to the output shaft. A slider member for selecting one of the speed change gear pairs to transmit the rotational force from the input shaft to the output shaft is supported by the output shaft. Selection of one of the speed change gear pairs is accomplished by moving the slider member in an axial direction by means of a shifter mechanism. A pump rotary shaft, to which the rotation is transmitted from the input shaft, is disposed at a location between the input shaft and the shifter mechanism in a circumferential direction of the output shaft.

Abstract: A combustion engine (E) for a motorcycle includes a crankshaft (26) extending in a widthwise direction of the motorcycle and a supercharger (42) which pressurizes intake air (I). A clutch gear (72) to which a clutch is connected is provided at the right side of the crankshaft (26), and a supercharger gear (80) which drives the supercharger (42) is provided at the left side of the clutch gear (72). The supercharger gear (80) is formed on a crank web (75) disposed such that a journal (68) is located between the clutch gear (72) and the crank web (75).

Abstract: An impeller for pressurizing an intake air of an engine is provided on a left side end portion in a supercharger rotary shaft of the supercharger. The power from the engine is transmitted to a second sprocket, which is provided on a right side end portion of an input shaft of a speed increaser, through a chain to thereby allow the supercharger to drive. The second sprocket is removably fitted to the input shaft by means of a bolt. The supercharger rotary shaft, the input shaft, the second sprocket and the bolt are all accommodated in a supercharger casing. The supercharger casing has a right side end face formed with an access opening through which access can be made to the second sprocket and the bolt from an axial direction.

Abstract: A combustion engine for a motorcycle includes a supercharger which pressurizes intake air. The supercharger is driven by power of the combustion engine. A first cushioning body which suppresses rotation fluctuation of power is provided on a power transmission path leading from the combustion engine to the supercharger. The first cushioning body has a damper structure to transmit power from an upstream side to a downstream side thereof through an elastic body.

Abstract: To provide a supercharger mounting structure for an engine that enables a supercharger to be easily fitted to or removed from an engine main body, the supercharger mounting structure for the engine includes a supercharger including a compressing unit for supplying an intake air under pressure to the engine, a speed increasing unit for increasing the rotational speed of an engine rotary shaft and then transmitting it to the compressing unit and a supercharger casing for accommodating the compressing unit and the speed increasing unit. The supercharger casing is removably fitted to a crankcase of the engine.

Abstract: An oil filter and an oil cooler of a motorcycle combustion engine are disposed on an outer surface of an engine body side by side in a right-left direction. A first engine lubrication passage extending in the right-left direction is connected to an outflow passage for the oil cooler. A second engine lubrication passage is connected to the first engine lubrication passage, to extend frontward, and is disposed parallel to an inflow passage and an outflow passage for the oil filter. A third engine lubrication passage is connected to the second engine lubrication passage and extends upward from the second engine lubrication passage in front of the first engine lubrication passage.

Abstract: A transmission lubricating structure which lubricates a transmission using a lubricating fluid, the transmission including a plurality of gear pairs each including a drive gear and a driven gear, includes a lubricating fluid feeding unit for feeding the lubricating fluid to the gears of the gear pairs; wherein the lubricating fluid feeding unit includes a plurality of injection nozzles, each of which directly injects the lubricating fluid to a tooth of the drive gear and a tooth of the driven gear, which teeth start to engage with each other.

Abstract: An air-intake duct, which is disposed between an air outlet of an air cleaner box constituting an air cleaner and an air inlet of a throttle body constituting a throttle device, is configured to guide air cleaned by the air cleaner to the throttle device. The air-intake duct includes a tubular coupling member including an upstream coupling portion coupled in an air tight manner to the air outlet of the air cleaner box and a downstream coupling portion air-tightly coupled to the air inlet of the throttle body, the coupling member being entirely formed of an elastic rubber material. The air-intake duct also includes an air guide member including a first air inlet configured to take in air therethrough from inside the air cleaner box, a first air outlet configured to discharge the air therethrough toward the throttle body, and a fitting portion fitted to the coupling member.

Abstract: A vehicle includes a duct structure configured to take in air from outside; an air cleaner including an air filter configured to clean the air guided to the air cleaner through the duct structure; a throttle device including a throttle valve for controlling a flow rate of the air guided to the throttle device through the air cleaner; and an engine including an intake port configured to suction the air guided to the engine through the throttle device; the duct structure including: a main inlet configured to take in air therethrough from outside by utilizing a ram pressure; a main passage extending from the main inlet to the air filter; a sub-inlet configured to take in air therethrough from outside; and a joint section located upstream of the air filter, the air flowing from the sub-inlet being joined to the air in the main passage, at the joint section.

Abstract: A straddle vehicle includes an engine; an air cleaner including an air cleaner box forming a passage through which air is supplied to the engine and an air filter for cleaning the air flowing through the passage; and a first electric component positioned laterally relative to the air cleaner box.

Abstract: An air-intake duct of the present invention, configured to guide air to a throttle device coupled to an engine, includes a main wall forming a main passage; and a sub-wall provided outside the main wall to form a sub-passage; wherein the sub-wall has a height smaller than a height of the main wall; and wherein the sub-passage is defined by an inner wall surface of the sub-wall and an outer wall surface of the main wall and is disposed on one side in a direction substantially perpendicular to a passage axis of the main passage.

Abstract: According to one embodiment, a semiconductor storage device includes a housing, a plurality of circuit boards, and a partition wall. The circuit boards are stacked, spaced apart from one another, and mounted with semiconductor devices including a plurality of nonvolatile semiconductor memories. The partition wall is located between the circuit boards.

Abstract: A straddle-type vehicle includes an engine; an air cleaner including an air cleaner box forming a passage through which air is supplied to the engine and an air filter for cleaning the air flowing through the passage; and a first electric component positioned laterally relative to the air cleaner box.

Abstract: An air-intake duct, which is disposed between an air outlet of an air cleaner box constituting an air cleaner and an air inlet of a throttle body constituting a throttle device, is configured to guide air cleaned by the air cleaner to the throttle device. The air-intake duct includes a tubular coupling member including an upstream coupling portion coupled in an air tight manner to the air outlet of the air cleaner box and a downstream coupling portion air-tightly coupled to the air inlet of the throttle body, the coupling member being entirely formed of an elastic rubber material. The air-intake duct also includes an air guide member including a first air inlet configured to take in air therethrough from inside the air cleaner box, a first air outlet configured to discharge the air therethrough toward the throttle body, and a fitting portion fitted to the coupling member.

Abstract: A vehicle includes a duct structure configured to take in air from outside; an air cleaner including an air filter configured to clean the air guided to the air cleaner through the duct structure; a throttle device including a throttle valve for controlling a flow rate of the air guided to the throttle device through the air cleaner; and an engine including an intake port configured to suction the air guided to the engine through the throttle device; the duct structure including: a main inlet configured to take in air therethrough from outside by utilizing a ram pressure; a main passage extending from the main inlet to the air filter; a sub-inlet configured to take in air therethrough from outside; and a joint section located upstream of the air filter, the air flowing from the sub-inlet being joined to the air in the main passage, at the joint section.

Abstract: A drain bolt mounting structure comprises a bottomed hole formed on an outer surface of an oil pan to extend continuously with a drain hole of the oil pan, a female thread formed on an inner peripheral surface of the drain hole; a drain bolt including a shaft portion having a male thread threadingly engageable with the female thread of the drain hole and a head portion formed at one end portion of the shaft portion; a press-in member formed of a second metal containing aluminum which has a higher standard electrode potential than a first metal forming the oil pan, the press-in member being configured to be pressed into the bottomed hole; and a crushing member configured to be crushed between the press-in member and the head portion of the drain bolt.

Abstract: A magnetic disk device includes a swing-type head actuator which is driven by a voice coil motor. The voice coil motor is cooled by an airflow generated when a magnetic disk accommodated in a disk accommodating unit of an enclosure is rotated by a spindle motor. An airflow dividing member provided on an inner wall or a base of an actuator accommodating unit divides the airflow generated by the rotation of the disk and passing along the inner wall. The divided airflow is introduced to a coil part of the voice coil motor, and cools the coil, without sacrificing the dust purge performance.

Abstract: An air-intake duct of the present invention, configured to guide air to a throttle device coupled to an engine, includes a main wall forming a main passage; and a sub-wall provided outside the main wall to form a sub-passage; wherein the sub-wall has a height smaller than a height of the main wall; and wherein the sub-passage is defined by an inner wall surface of the sub-wall and an outer wall surface of the main wall and is disposed on one side in a direction substantially perpendicular to a passage axis of the main passage.

Abstract: In a load/unload type disk drive, when a head for reading/writing information on a disk is retracted outside the disk by a swing arm at the time of stopping the operation of the disk drive, a ramp mechanism holds a lift tab provided at the tip of the swing arm, wherein the ramp mechanism comprises a holding member for holding the lift tab and a mounting member for mounting the holding member thereon, the mounting member having a guide capable of adjusting the mounting position. The holding member mounted on the mounting member is tentatively fastened thereto, with provisions made to be able to adjust the position of the thus mounted holding member by moving it along the guide in a direction conforming to the rotational path of the holding member.

Abstract: A first shroud and a second shroud are opposed to the peripheral end surface of a recording disk at a certain constant distance. The second shroud is spaced downstream from the first shroud in the direction of the rotation of the recording disk. A shroud plate is opposed to the peripheral end surface of the recording disk at a position between the first and second shrouds. The shroud plate functions as a shroud. The shroud plate serves to suppress turbulence of airflow. Vibration of the recording disk can be suppressed. Moreover, if the shroud plate is designed to extend along a virtual plane perpendicular to the rotation axis of the recording disk, the airflow is prevented from staying between the first and second shrouds. The airflow can effectively be taken out. The airflow can effectively be utilized.