POWER TRANSMISSION DEVICE

• Main Authors: OZAWA, Yoshihiko, YOSHIMOTO, Katsu, CHEN, Han Hiong
• Format: Patent
• Language: English; French; German
• Published: 28.08.2024
• Subjects: BLASTING; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

A power transmission apparatus (K) comprising: a clutch member (4a, 4b) housed in a clutch housing (2) that rotates together with an input member (1) that rotates with a driving force of an engine (E) of a vehicle, the clutch housing (2) having a plurality of driving clutch plates (6) attached thereto, the clutch member (4a, 4b) having a plurality of driven clutch plates (7) attached thereto, the driven clutch plates (7) being arranged alternately with the driving clutch plates (6), the clutch member (4a, 4b) being connected to an output member (3) that is able to rotate a wheel (T) of the vehicle; a pressure member (5) movable between an operating position where the driving and driven clutch plates (6, 7) are pressed against each other so as to enable transmission of the driving force of the engine (E) to the wheel (T) and a non-operating position where a pressing force exerted on the driving and driven clutch plates (6,7) is released so as to cut off transmission of the driving force of the engine (E) to the wheel (T); and a centrifugal clutch means (9) including a weight member (10) movable from a radially inner position to a radially outer position with centrifugal force produced by rotation of the clutch housing (2), the centrifugal clutch means (9) being configured to, when the weight member (10) is located at the radially outer position, press the driving and driven clutch plates (6, 7) against each other so as to enable transmission of the driving force of the engine (E) to the wheel (T) and configured to, when the weight member (10) is located at the radially inner position, release the pressing force exerted on the driving and driven clutch plates (6,7) so as to cut off transmission of the driving force of the engine (E) to the wheel (T), wherein the centrifugal clutch means (9) includes a pressing member (12) to press the driving and driven clutch plates (6, 7) against each other by moving in a stacking direction of the driving and driven clutch plates (6, 7) in response to movement of the weight member (10) from the radially inner position to the radially outer position, a holding member (11) holding the weight member (10) such that the weight member (10) is movable between the radially inner position and the radially outer position, in a cross section along an axis of the output member (3), a straight line passing through the pressing member (12) and parallel to the axis passes through a pressing surface of the driving clutch plate (6) and the driven clutch plate (7), the pressing member (12) is independently movable close to or away from the holding member (11), the holding member (11) includes a plurality of housing portions (11a) housing the weight member (10) and a plurality of first pawl portions attached to the clutch housing (2).