Saddle riding type vehicle

Patent metadata

Field	Value
Publication number	US-2017106930-A1
Application number	US-201515128467-A
Country	US
Kind code	A1
Filing date	Mar 16, 2015
Priority date	Mar 24, 2014
Publication date	Apr 20, 2017
Grant date	—

Abstract

A saddle riding type vehicle includes left and right front wheels that unlock linkage more surely when the vehicle starts. The vehicle includes a linkage that connects the left and right front wheels to a vehicle body frame, a lock that locks or unlocks the linkage, a lock controller that controls the lock, a wheel speed sensor that detects a vehicle speed, and a vehicle speed change rate obtainer that obtains a vehicle speed change rate. The lock controller unlocks the linkage via the lock if the linkage is locked by the lock and at least one of the vehicle speed and the vehicle speed change rate satisfies an unlocking condition.

First claim

1 - 8 . (canceled)

9 . A saddle riding type vehicle comprising:
an engine; a vehicle body frame; left and right front wheels; a linkage that connects the left and right front wheels to the vehicle body frame; a lock that locks the linkage by preventing operation of the linkage and unlocks the linkage by allowing the linkage to operate; a lock controller that controls locking and unlocking of the linkage by the lock; a vehicle speed detector that detects a vehicle speed; and a vehicle speed change rate obtainer that obtains a vehicle speed change rate; wherein the lock controller unlocks the linkage via the lock if the linkage is locked by the lock and at least one of the vehicle speed detected by the vehicle speed detector and the vehicle speed change rate obtained by the vehicle speed change rate obtainer satisfies an unlocking condition.

10 . The saddle riding type vehicle according to claim 9 , wherein the unlocking condition is satisfied if the vehicle speed change rate is at least equal to a prescribed value; and
the lock controller unlocks the linkage via the lock if the linkage is locked by the lock and the vehicle speed change rate obtained by the vehicle speed change rate obtainer is at least equal to the prescribed value.

11 . The saddle riding type vehicle according to claim 9 , wherein the vehicle speed change rate obtainer outputs a difference between a vehicle speed detected by the vehicle speed detector at a first point in time and a vehicle speed detected by the vehicle speed detector at a second point in time, or a derivative value of a vehicle speed detected by the vehicle speed detector as the vehicle speed change rate.

12 . The saddle riding type vehicle according to claim 9 , further comprising a throttle opening degree detector that detects a value corresponding to a throttle opening degree of the engine, wherein the lock controller unlocks the linkage via the lock if the linkage is locked by the lock and the value corresponding to the throttle opening degree detected by the throttle opening degree detector satisfies the unlocking condition.

13 . The saddle riding type vehicle according to claim 9 , further comprising a throttle opening degree detector that detects a value corresponding to a throttle opening degree of the engine, wherein the lock controller locks the linkage via the lock if the linkage is unlocked and the value corresponding to the throttle opening degree detected by the throttle opening degree detector, the vehicle speed detected by the vehicle speed detector, and the vehicle speed change rate obtained by the vehicle speed change rate obtainer satisfy a locking condition.

14 . The saddle riding type vehicle according to claim 9 , further comprising an instruction generator that outputs an instruction signal that instructs the lock controller to unlock the linkage via the lock, wherein the lock controller unlocks the linkage via the lock in response to the instruction signal supplied by the instruction generator if the linkage is in a locked state.

15 . The saddle riding type vehicle according to claim 13 , further comprising an instruction generator that outputs an instruction signal that instructs the lock controller to lock the linkage via the lock, wherein the lock controller locks the linkage by the lock in response to a transition from a state in which none of the vehicle speed change rate, the value corresponding to the throttle opening degree, and the vehicle speed satisfies the locking condition to a state in which all of the vehicle speed change rate, the value corresponding to the throttle opening degree, and the vehicle speed satisfy the locking condition while the linkage is in an unlocked state and the instruction signal is supplied by the instruction generator.

16 . The saddle riding type vehicle according to claim 9 , further comprising a damper that damps vibrations in opposite phases in the left and right front wheels, wherein the lock locks operation of the damper.

Assignees

• Yamaha Motor Co Ltd

Inventors

• Hara Nobuo
• Shibuya Yu

Classifications

• B60G17/015

  the regulating means comprising electric or electronic elements ({B60G17/002}, B60G17/005 take precedence) · CPC title

• B62J45/00

  Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for · CPC title

• B62K5/05

  characterised by a single rear wheel · CPC title

• B62K5/08

  with steering devices acting on two or more wheels · CPC title

• B62K2005/001

  Suspension details for cycles with three or more main road wheels · CPC title