Abstract: A swing speed reducer comprising: a main body; an input shaft that is rotatably held in the main body; a precession body that precesses; a swinging body that engages with the precession body and is swung by the precession; and an output shaft that is rotated by the swing of the swinging body; wherein a precession annular groove for precession of the precession body and a swinging annular groove for swinging the swinging body are provided on the surface of a spherical portion.

Abstract: [Problem] To provide a swing-type speed reducer that has a large crossing angle, and that can be further miniaturized compared to conventional speed reducers. [Solution] Provided is a swing-type speed reducer 1 comprising: a main body 10; an input shaft 20 that is rotatably held in the main body 10; a precession body 30 that precesses; a swinging body 40 that engages with the precession body 30 and is swung by the precession; and an output shaft 50 that is rotated by the swing of the swinging body 40. In the present invention, a precession annular groove 34 for precession of the precession body 30 and a swinging annular groove 33 for swinging the swinging body 40 are provided on the surface of a spherical portion 31. Thereby, in comparison to a conventional case where the grooves are provided on the inner peripheral surface of a member, the region where the grooves can be machined is increased, and the device can be further miniaturized.

Abstract: A gripping force measurement device includes a body portion and a plurality of pressure sensors. The plurality of pressure sensors includes at least one first sensor and two or more second sensors including pressure-sensitive surfaces oriented in the same direction. A pressure-sensitive surface of the first sensor and the pressure-sensitive surfaces of the two or more second sensors are disposed such that, when a subject pressurizes the pressure-sensitive surface of the first sensor and the pressure-sensitive surfaces of the two or more second sensors, the gripping force measurement device is grippable by the subject.

Abstract: To provide a joint support unit, etc. capable of being worn on both left and right joints. A joint support unit 20 includes a first link 21 worn on one end side of a knee joint, a second link 22 worn on the other end side of the knee joint, and a driving unit 30 configured to cause the first link 21 and the second link 22 to perform rotational movement, or to relatively perform rotational movement while moving a rotation center and to perform sliding movement.

Abstract: To provide a joint support unit, etc. capable of being worn on both left and right joints. A joint support unit 20 includes a first link 21 worn on one end side of a knee joint, a second link 22 worn on the other end side of the knee joint, and a driving unit 30 configured to cause the first link 21 and the second link 22 to perform rotational movement, or to relatively perform rotational movement while moving a rotation center and to perform sliding movement.

Abstract: A gripping force measurement device includes a body portion and a plurality of pressure sensors. The plurality of pressure sensors includes at least one first sensor and two or more second sensors including pressure-sensitive surfaces oriented in the same direction. A pressure-sensitive surface of the first sensor and the pressure-sensitive surfaces of the two or more second sensors are disposed such that, when a subject pressurizes the pressure-sensitive surface of the first sensor and the pressure-sensitive surfaces of the two or more second sensors, the gripping force measurement device is grippable by the subject.

Abstract: Disclosed is a rotatable-and-swingable type of rotary joint device according to the present invention comprises at least an input shaft rotatably fixed to the casing of the device, a precession spherical body responsive to the rotation of the input shaft for rotating and swinging, and an output shaft operatively connected to the precession spherical body for rotating. This arrangement permits the crossing of the input and output shafts to change freely within certain angular limits, thereby substantially increasing the versatility of designing, and contributing to the down-sizing of the drive transmission.

Abstract: An improved chain drive mechanism having a closed loop of roller chain passing round the opposite sprocket wheels. The profile of each tooth formed on the circumference of the sprocket wheel is in conformity with the envelope curve traced by a roller when the roller moves with its center following an involute-trochoid curve. The involute-trochoid curve is determined by offsetting the roller pitch line a certain distance apart outside the contact pitch line, and by rotating the contact pitch line on the base circle of the sprocket wheel to allow a point on the roller pitch line to trace a curve. The certain distance is so determined that the roller pitch may be equal to the incremental arc length, which is determined by dividing the circumference of the base circle by the number of teeth.

Abstract: A transmission device for converting a torque from rotary to linear movement includes a rack having a plurality of teeth and a pinion having rollers which mesh with the teeth of the rack, with pressurization provided therebetween. The rack has an arcuate tooth flank diametrically greater than each of the rollers of the pinion. The rack also has a tooth face which has an approach profile progressively moving away from the path of contact of each of the rollers along which each of the rollers would otherwise engage with the tooth face. A plurality of each of the rollers of the pinion concurrently mesh with the corresponding teeth of the rack. Another embodiment converts a torque between rotary and linear movement and comprises a pinion having a plurality of teeth and a rack having a plurality of rollers to mesh with the teeth of the pinion.