Patent ID: 8684880
Filing Date: 2014-04-01
Classification: F16H

Abstract:
1. A rattling noise reduction device for a vehicle having a transmission mechanism configured to transmit a torque outputted from a prime mover to an output member through a mating transmission mechanism, and a shifting means adapted to select a drive position in which the torque outputted from the prime mover is transmitted to the output member, to select a neutral position in which the torque outputted from the prime mover is not transmitted to the output member, and to select a parking position for keeping the vehicle stopped, in which the transmission mechanism is configured to idle any one of rotary members thereof to prevent the torque from being applied to the output member in case the neutral position is selected, comprising: a slidable contact means, which is contacted frictionally with the output member, or with a rotary member transmitting the torque to the output member; or with a member integrated with the rotary member, in case the neutral position is selected by operating the shifting means; and a parking mechanism having a parking gear which is rotated together with the rotary member, and a locking member which is moved toward the parking gear to be engaged therewith in a manner to halt a rotation of the parking gear by selecting the parking position, wherein: the slidable contact means includes a friction member which is attached to the locking member, and which is contacted frictionally with the rotary member or the member integrated therewith in case the neutral position is selected and the locking member is thereby moved; the shifting means includes a means adapted to select the parking position for keeping the vehicle stopped; the rotary member includes the parking gear having an engagement recess which is rotated together with the output member; the rattling noise reduction device further comprises the locking member having a protrusion, which is moved toward the parking gear thereby inserting the protrusion into the engagement recess in case the parking position is selected; the locking member is moved to different positions depending on if the shift position selected by the shifting means is the drive position, the neutral position, or the parking position; and the slidable contact means includes an annular member, which is attached to a leading end of the protrusion of the locking member while being fitted loosely onto the parking gear, in a manner to be contacted with the rotary member in case the neutral position is selected so that the locking member is moved to a predetermined position, and in a manner not to be contacted with the rotary member in case the drive position is selected so that the locking member is moved to another predetermined position.