A magnetic motor comprising a timing controller and at least one cylinder having a piston, an upper cylinder head, and a lower cylinder head is disclosed. The piston, upper cylinder head, and lower cylinder head each include a set of one or more magnets characterized by a common pattern. The one or more magnets in the piston, the upper cylinder head, and lower cylinder head comprise poles oriented parallel to the longitudinal axis of the cylinder. The piston oscillates linearly in the cylinder but does not rotate, while the upper and lower cylinder heads rotate in place but do not move linearly. The timing controller is configured to vary the phase between longitudinal oscillation of the piston and angular oscillation of the upper and lower cylinder heads to optimally drive the piston up and down in the cylinder.

A vibration device, including a shell, a vibrator and a stator accommodated in the shell, and an elastic member. One of the vibrator and the stator includes a magnetic circuit unit while the other one includes a coil. The elastic member includes a first fixing portion fixedly connected with the shell, a first elastic arm and a second elastic arm bending and extending from two opposite ends of the first fixing portion, a second fixing portion extending from an end of the first elastic arm in a direction away from a geometric center of the first fixing portion, and a third fixing portion extending from an end of the second elastic arm in a direction away from the geometric center of the first fixing portion; both the second fixing portion and the third fixing portion are fixedly connected with the vibrator.

A vibration device, including a shell, a vibrator and a stator accommodated in the shell, and an elastic member. One of the vibrator and the stator includes a magnetic circuit unit while the other one includes a coil. The elastic member includes a first fixing portion fixedly connected with the shell, a first elastic arm and a second elastic arm bending and extending from two opposite ends of the first fixing portion, a second fixing portion extending from an end of the first elastic arm in a direction away from a geometric center of the first fixing portion, and a third fixing portion extending from an end of the second elastic arm in a direction away from the geometric center of the first fixing portion; both the second fixing portion and the third fixing portion are fixedly connected with the vibrator.

An automatic torque transmission with one or more stages, where each stage has a number of available gear ratios. A planetary gear train includes a planet gear, a sun gear, and a ring gear. The planet gear is configured to drive the sun gear at higher speed and lower torque, and the ring gear at lower speed and higher torque. The sun gear is coupled to an input of a differential gear train. The ring gear is coupled to a different input of the differential gear train. A brake clutch can be selectively coupled to the ring gear, to provide selective braking of the ring gear so as to selectively transfer drive from the ring gear to the sun gear.

There is provided a vibration generation device superior in responsivity compared to the related art. The vibration generation device includes a stator, a rotor provided to the stator so as to be able to rotate around the central axis, and having a weight having a gravity center at a position shifted from the central axis, and an air resistance reduction part provided to the weight, and reducing the air resistance to the weight when the rotor rotates. The weight is formed to have a semicircular shape viewed from the axial direction, and the air resistance reduction part has an arcuate part adapted to connect an end edge on the upstream side in the rotational direction of the rotor in the outer circumferential surface of the weight and an end edge on the downstream side in the rotational direction to each other so as to form a circular arc shape.

There is provided a vibration generation device superior in responsivity compared to the related art. The vibration generation device includes a stator, a rotor provided to the stator so as to be able to rotate around the central axis, and having a weight having a gravity center at a position shifted from the central axis, and an air resistance reduction part provided to the weight, and reducing the air resistance to the weight when the rotor rotates. The weight is formed to have a semicircular shape viewed from the axial direction, and the air resistance reduction part has an arcuate part adapted to connect an end edge on the upstream side in the rotational direction of the rotor in the outer circumferential surface of the weight and an end edge on the downstream side in the rotational direction to each other so as to form a circular arc shape.

An elastic member structure includes: a loop type inner plate; a loop type outer plate having the same center as the loop type inner plate; and a plurality of spiral elastic plates connected to the loop type inner plate and the loop type outer plate and having given elasticity, wherein the loop type outer plate includes a plurality of first areas having areas connected to the ends of the plurality of spiral elastic plates and a plurality of second areas formed between the plurality of first areas and the outer size of each first area of the loop type outer plate is greater than the outer size of each second area thereof.

An elastic member structure includes: a loop type inner plate; a loop type outer plate having the same center as the loop type inner plate; and a plurality of spiral elastic plates connected to the loop type inner plate and the loop type outer plate and having given elasticity, wherein the loop type outer plate includes a plurality of first areas having areas connected to the ends of the plurality of spiral elastic plates and a plurality of second areas formed between the plurality of first areas and the outer size of each first area of the loop type outer plate is greater than the outer size of each second area thereof.

The present invention relates to a method for manufacturing a sintered bearing having a bearing surface that forms a bearing gap with a shaft to be supported, in its inner periphery. This manufacturing method includes: a compacting step P2 of compacting a base powder containing a diffusion alloyed powder 11 prepared by partially diffusing a copper powder in an iron powder as a main material, a low-melting-point metal powder 14, and a solid lubricant to obtain a green compact, and a sintering step P3 of sintering the green compact 4 to obtain a sintered compact 4.

A vibration motor includes a stationary portion, a vibrating body, an elastic member, and a damper member. The elastic member includes a first extending portion, a second extending portion, a first connection portion, a second connection portion, a third extending portion, a fourth extending portion, a third connection portion, a fourth connection portion, and a fifth connection portion. The damper member includes a first longitudinal portion and a second longitudinal portion. An inner section including the first extending portion, the third extending portion, and the fifth connection portion directly opposes an upper surface of a weight in plan view in an up-down direction.