Yamaha Hatsudoki Kabushiki Kaisha

Eiichirou Tsujii

Hitoshi Watanabe

Nobuo Hara

Kazuhiro Nishida

Masayuki Hirano

Atsushi Imai

Toshio Takeuchi

Hiroshi Kitagawa

Junji Terada

Isao Fujii

Yosuke Hirayama

Takeshi Toyota

Masatoshi Yamada

Hirokatsu Ogawa

Mineo Yamamoto

Makoto Kurachi

Sachiyo Hasegawa

Atsushi Ueno

A saddle riding type vehicle includes a stabilizer arranged to support a pair of wheels arranged at opposite sides of a vehicle body to be movable up and down relative to the vehicle body, and a switching mechanism arranged to switch between a movable state in which the pair of wheels are permitted to move up and down and a locked state in which the pair of wheels are restricted from moving up and down. The switching mechanism includes a coupling pin member arranged to engage with the stabilizer to set the stabilizer to the locked state thereby restricting rotation of the stabilizer relative to the vehicle body, and to disengage from the stabilizer to set the stabilizer to the movable state thereby permitting rotation of the stabilizer relative to the vehicle body, and a solenoid fixed to the vehicle body and arranged to drive the coupling pin member into and out of engagement with the stabilizer. When the switching mechanism switches to the locked state, the vehicle can be parked and stored conveniently with the vehicle body standing unassisted.

Saddle riding type vehicle

A two-rear-wheel electric vehicle configured to lean its vehicle body frame when turning includes a vehicle body frame, a pair of right and left rear arms, a battery, and a shock absorber. The vehicle body frame includes a head pipe, a front inclined portion, a bottom portion, and a rear inclined portion. The front inclined portion extends obliquely downward and rearward from the head pipe. The bottom portion includes a front support portion that supports a front end portion of the shock absorber. The bottom portion extends rearward in a front-back direction of the vehicle from a rear end portion of the front inclined portion. The rear inclined portion includes a battery support portion, and extends obliquely upward and rearward from a rear end portion of the bottom portion. A swing shaft is positioned rearward of the front support portion and below the battery support portion.

Two-rear-wheel electric vehicle

A saddle riding type vehicle includes a right wheel and a left wheel, a right lower arm and a left lower arm swingably provided on a vehicle arranged to support the right wheel and the left wheel to be movable up and down, and a right stopper member and a left stopper member arranged to contact the right lower arm and the left lower arm to stop the vehicle body from leaning in excess of a predetermined amount, which do not stop leaning of the vehicle body when the lean amount of the vehicle body is less than the predetermined amount. The vehicle body is arranged to lean freely when the lean amount of the vehicle body is in a range not exceeding the predetermined amount. Therefore, the rider can preferably travel comfortably.

A saddle riding type vehicle includes a balancer beam rotatably mounted on a vehicle body to cause a right wheel and a left wheel to move up and down in opposite directions, and is capable of making turns by leaning the vehicle body. The saddle riding type vehicle also includes a headlight, a drive mechanism arranged to rotate the headlight, a front detector arranged to detect a rotation angle of the balancer beam relative to the vehicle body, and a controller programmed to control the drive mechanism based on a result of detection by the front detector. The rotation angle detected by the front detector corresponds to an angle of the vehicle body leaning sideways relative to a traveling surface (relative lean angle). The controller controls the drive mechanism based on such result of detection by the front detector. The headlight can therefore illuminate directions of movement properly.

A saddle riding type vehicle capable of making turns by leaning a vehicle body includes a pair of rear wheels provided at opposite sides of the vehicle body, a pair of support mechanisms arranged to support the pair of rear wheels to be movable, independently of each other, up and down about a pivot axis relative to the vehicle body, an engine disposed forward of the pivot axis to produce a drive force, a differential mechanism arranged to distribute the drive force of the engine to the pair of rear wheels and to absorb a rotating speed difference between the pair of rear wheels at a time of making a turn, the differential mechanism including drive shafts arranged between the engine and the pivot axis, a pair of shaft drive mechanisms provided for the pair of rear wheels, respectively, and arranged to transmit the drive force of the differential mechanism to the pair of rear wheels, and a pair of constant velocity universal joints provided for the pair of shaft drive mechanisms, respectively, each including a pair of universal joints connected by a coupling yoke, the coupling yoke being located on the pivot axis, and the pair of universal joints being arranged in a positional relationship of point symmetry.

The present invention provides a vehicle, such as a motorcycle, that can sufficiently control a stagger in an extremely slow speed running state and a tumble of vehicle body in the standstill state thereof. This vehicle, such as a motorcycle includes a head pipe that supports a front wheel and a main frame that supports a rear wheel. The head pipe is movably attached to the main frame. The vehicle includes a hydraulic cylinder for shifting the centroid of the vehicle body by moving one of the head pipe and the main frame 3 relative to the other.

Vehicle having front and rear frames

A pair of combined accumulator and control devices for interconnected suspension units having a simplified construction and wherein unequal displacement of fluid from the associated suspension units will cause an increase in the effective damping of the suspension unit having the greatest fluid displacement.

Growing community of inventors

Shizuoka, Japan

Eiichirou Tsujii