Abstract: The impurity concentration in the oxide semiconductor film is reduced, and a highly reliability can be obtained.

Abstract: There have been cases where transistors formed using oxide semiconductors are inferior in reliability to transistors formed using amorphous silicon. Thus, in the present invention, a semiconductor device including a highly reliable transistor formed using an oxide semiconductor is manufactured. An oxide semiconductor film is deposited by a sputtering method, using a sputtering target including an oxide semiconductor having crystallinity, and in which the direction of the c-axis of a crystal is parallel to a normal vector of the top surface of the oxide semiconductor. The target is formed by mixing raw materials so that its composition ratio can obtain a crystal structure.

Abstract: A first housing 10 is arranged in a mounting hole 91 of a panel 90. The first housing 10 includes a base portion 27, a coupling portion 28 located forward of the base portion 27, a linking portion 29 linking between the base portion 27 and the coupling portion 28, and a lock arm 30 projecting rearward toward the base portion 27 from the coupling portion 28. The lock arm 30 has a lock surface 34 to be arranged to contact a front surface of the panel 90. The lock arm 30 and the linking portion 29 are both shaped to be resiliently deformable.

Abstract: A first housing 10 includes a resiliently deformable lock arm 30. The lock arm 30 has a lock surface 34 to be arranged to contact a front surface of a panel 90 with the first housing 10 arranged in a mounting hole 91 of the panel 90. A second housing 40 includes a space portion 53 into which an arm plate 72 of a lever 70 is arranged, leg portions 57 rising from the side of an outer wall 52 of the space portion 53 while facing each other, and a bridge portion 58 extending between the leg portions 57 facing each other. The bridge portion 58 includes a releasing portion 65 capable of releasing a state where the lock surface 34 is in contact with the front surface of the panel 90.

Abstract: A variable speed accelerator is provided, including an electric driving device generating a rotational driving force, and a planetary gear transmission device changing the speed of the rotational driving force and transmitting the changed rotation driving force to a driving target. The electric driving device includes: a variable-speed motor having a variable-speed rotor connected to a variable-speed input shaft of the transmission device; and a constant-speed motor having a constant-speed rotor connected to a constant-speed input shaft of the transmission device. The variable-speed rotor and the planetary gear carrier shaft have a shaft insertion hole formed to pass therethrough in the axial direction.

Abstract: A first housing 10 is arranged in a mounting hole 91 of a panel 90. The first housing 10 includes a base portion 27, a coupling portion 28 located forward of the base portion 27, a linking portion 29 linking between the base portion 27 and the coupling portion 28, and a lock arm 30 projecting rearward toward the base portion 27 from the coupling portion 28. The lock arm 30 has a lock surface 34 to be arranged to contact a front surface of the panel 90. The lock arm 30 and the linking portion 29 are both shaped to be resiliently deformable.

Abstract: A first housing 10 includes a resiliently deformable lock arm 30. The lock arm 30 has a lock surface 34 to be arranged to contact a front surface of a panel 90 with the first housing 10 arranged in a mounting hole 91 of the panel 90. A second housing 40 includes a space portion 53 into which an arm plate 72 of a lever 70 is arranged, leg portions 57 rising from the side of an outer wall 52 of the space portion 53 while facing each other, and a bridge portion 58 extending between the leg portions 57 facing each other. The bridge portion 58 includes a releasing portion 65 capable of releasing a state where the lock surface 34 is in contact with the front surface of the panel 90.

Abstract: A variable-speed speed-up mechanism includes: an electric device generating a rotation driving force; and a transmission device changing a speed of the rotation driving force and transmitting the rotation driving force to a target to be driven. The transmission device includes: a sun gear rotating around an axis line; a sun gear shaft fixed to the sun gear and extending in an axial direction around the axis line; a planetary gear meshing with the sun gear, revolving around the axis line, and rotating around a center line of the planetary gear; a gear meshing with the planetary gear; a planetary gear carrier including a planetary gear carrier shaft extending in the axial direction around the axis line and supporting the planetary gear; and a gear carrier including a gear carrier shaft extending in the axial direction around the axis line and supporting the gear.

Abstract: A variable-speed speed-up mechanism includes: an electric device generating a rotation driving force; and a transmission device changing a speed of the rotation driving force and transmitting the rotation driving force to a target to be driven. The transmission device includes: a sun gear rotating around an axis line; a sun gear shaft fixed to the sun gear and extending in an axial direction around the axis line; a planetary gear meshing with the sun gear, revolving around the axis line, and rotating around a center line of the planetary gear; a gear meshing with the planetary gear; a planetary gear carrier including a planetary gear carrier shaft extending in the axial direction around the axis line and supporting the planetary gear; and a gear carrier including a gear carrier shaft extending in the axial direction around the axis line and supporting the gear.

Abstract: A variable speed accelerator includes: an electric driving device; and a transmission device changing the speed of a rotational driving force generated by the electric driving device and transmits the changed rotation driving force to a driving target. The transmission device includes: a sun gear; a sun gear shaft fixed to the sun gear; a planetary gear that meshes with the sun gear; an internal gear that meshes with the planetary gear; a planetary gear carrier including a planetary gear carrier shaft; and an internal gear carrier including an internal gear carrier shaft. The electric driving device includes: a constant-speed motor including a constant-speed rotor; and a variable-speed motor including a variable-speed rotor. The variable speed accelerator further includes: a rotation rate controller that issues a speed instruction; a torque measuring device; and a control device holding an instruction value of the speed instruction.

Abstract: A variable speed accelerator is provided, including an electric driving device which generates a rotational driving force, and a planetary gear transmission device which changes the speed of the rotational driving force generated by the electric driving device and transmits the changed rotation driving force to a driving target, wherein a sun gear shaft forms an output shaft connected to the driving target, an internal gear carrier shaft forms a constant-speed input shaft, and a planetary gear carrier shaft forms a variable-speed input shaft, the electric driving device includes a variable-speed motor having a variable-speed rotor connected to a variable-speed input shaft of the transmission device, and a constant-speed motor having a constant-speed rotor connected to a constant-speed input shaft of the transmission device, the variable-speed rotor and the planetary gear carrier shaft are formed in a cylindrical shape centered on the axis and have a shaft insertion hole formed to pass therethrough in the axia

Abstract: A variable speed accelerator includes: an electric driving device; and a transmission device changing the speed of a rotational driving force generated by the electric driving device and transmits the changed rotation driving force to a driving target. The transmission device includes: a sun gear; a sun gear shaft fixed to the sun gear; a planetary gear that meshes with the sun gear; an internal gear that meshes with the planetary gear; a planetary gear carrier including a planetary gear carrier shaft; and an internal gear carrier including an internal gear carrier shaft. The electric driving device includes: a constant-speed motor including a constant-speed rotor; and a variable-speed motor including a variable-speed rotor. The variable speed accelerator further includes: a rotation rate controller that issues a speed instruction; a torque measuring device; and a control device holding an instruction value of the speed instruction.

Abstract: An electric saddled vehicle includes a vehicle body frame, a drive-wheel, a drum brake that brakes drive-wheel, and a swing unit that is swingably supported by vehicle body frame. The swing unit includes a drive motor configured separately from drive-wheel and a speed-reducing-mechanism that transmits power from the drive motor to the drive-wheel and has a wheel-drive-portion. The drive motor and speed-reducing-mechanism are arranged on a first-side, the drum brake is arranged on a second-side, and the wheel-drive-portion is arranged so that a distance of the wheel-drive-portion to a first-end-surface of the drive-wheel is shorter than a distance of the wheel-drive-portion to a center of vehicle in the left-right-direction, and a brake drum of the drum brake is arranged at position where the brake drum overlaps a second-end-surface of the drive-wheel in plan view.

Abstract: An electric vehicle includes an axle that is a hollow cylindrical shaft. A motor shaft is inserted into a hollow portion of the axle substantially coaxially with the axle. In this case, on one side of a wheel, a motor is connected to a base end of the motor shaft extending from one end of the axle. Also, on the other side of the wheel, a reduction mechanism is connected to a leading end of the motor shaft extending from the other end of the axle.

Abstract: An electric vehicle capable of protecting a coupling portion between a wheel and an axle from disturbance. An electric vehicle includes an axle that is a hollow cylindrical shaft passing substantially coaxially through a wheel in a manner extending from both sides of the wheel. A motor shaft is inserted into a hollow portion of the axle substantially coaxially with the axle in a manner extending from both ends of the axle. In this case, a motor is connected to a base end of the motor shaft extending from one end of the axle. Between the wheel and the motor, there are provided a coupling portion for coupling between the one end of the axle and the wheel, and a labyrinth structure for sealing between the wheel and the motor in a manner surrounding the coupling portion.

Abstract: The disclosed structure achieves a desired balance between higher-rigidity and weight saving in a connection-type rocker arm which integrally rocks a plural of arm portions. The rocker arm has a plurality of arm portions integrally formed on a swinging base end side of the rocker arm which are forked and extend towards a swinging end of the rocker arm, a connecting portion which integrally connects each swinging end of the arm portions, and a concave thinning portion which overlaps a swinging trajectory of the connecting portion, when viewed in the axis direction of the pivot shaft of the rocker arm.

Abstract: An electric saddled vehicle includes a vehicle body frame, a drive-wheel, a drum brake that brakes drive-wheel, and a swing unit that is swingably supported by vehicle body frame. The swing unit includes a drive motor configured separately from drive-wheel and a speed-reducing-mechanism that transmits power from the drive motor to the drive-wheel and has a wheel-drive-portion. The drive motor and speed-reducing-mechanism are arranged on a first-side, the drum brake is arranged on a second-side, and the wheel-drive-portion is arranged so that a distance of the wheel-drive-portion to a first-end-surface of the drive-wheel is shorter than a distance of the wheel-drive-portion to a center of vehicle in the left-right-direction, and a brake drum of the drum brake is arranged at position where the brake drum overlaps a second-end-surface of the drive-wheel in plan view.

Abstract: A small-sized vehicle has an oil control valve for a hydraulically-actuated mechanism of an engine, and provides good cooling of the oil control valve. A small-sized vehicle includes a spool valve for adjusting a hydraulic pressure for a hydraulically-actuated mechanism of an engine. The spool valve is disposed sideways of a cylinder portion (cylinder head) such that an axis of the spool valve extends substantially in parallel with an axis of the cylinder portion. Further, the spool valve is disposed at a position that is rearward of a radiator and that falls within a vertical span of the radiator in a vehicle side view.

Abstract: An internal combustion engine is equipped with a variable valve control system which is operable to selectively actuate an engine valve using one of two cams of a camshaft, by sliding a rocker arm in the axial direction of a rocker-arm shaft. The system is capable of restricting the axial-direction movement of the rocker arm within a predetermined range, using a simple structure without unduly increasing the number of component parts. Position-restriction portions are formed in a rocker arm, and abut on a trigger arm to restrict sliding movement of the rocker arm within a predetermined amount, when the trigger arm is disengaged from the rocker arm.

Abstract: An electric vehicle includes a double-sided swing arm that supports a motor shaft, an axle, and a wheel by supporting a motor on one side of the wheel and a reduction mechanism on the other side of the wheel. In this case, the swing arm is composed of, on the one side of the wheel, plural separable arm portions. The arm portions have respective separation points on an outside or outer periphery of the wheel. With the components arranged in this manner, weight balance of the electric vehicle is easily achieved, and the operational efficiency of mounting, removal, and replacement of the wheel and the motor is improved.