Vehicle

摘要

A vehicle includes a vehicle body frame that can lean, a right front wheel and a left front wheel, and an upper cross portion and a lower cross portion of a link mechanism each including a right end portion, a left end portion, and a middle portion supported on the vehicle body frame. The upper cross portion and the lower cross portion have different shapes. An upper right displacement and an upper left displacement that result when a rearward test force is exerted on an upper right bearing and an upper left bearing that support the upper cross portion with the lower cross portion removed are equal or substantially equal, and a lower right displacement and a lower left displacement that result when a rearward test force is exerted on a lower right bearing and a lower left bearing that support the lower cross portion with the upper cross portion removed are equal or substantially equal.

主权项

1. A vehicle that is driven by power from a power source, the vehicle comprising:
a vehicle body frame; a left front wheel and a right front wheel disposed in a left-and-right direction as seen from a front of the vehicle and that are steerable;
a right shock absorbing device that supports the right front wheel at a lower portion thereof and is configured to absorb an upward displacement of the right front wheel in an up-and-down direction of the vehicle body frame;a left shock absorbing device that supports the left front wheel at a lower portion thereof and is configured to absorb an upward displacement of the left front wheel in the up-and-down direction of the vehicle body frame;a link mechanism including:
a right side portion that supports an upper portion of the right shock absorbing device so as to turn about a right steering axis that extends in the up-and-down direction of the vehicle body frame;a left side portion that supports an upper portion of the left shock absorbing device so as to turn about a left steering axis that is parallel or substantially parallel to the right steering axis;an upper cross portion that includes a right end portion that supports an upper portion of the right side portion so as to turn about an upper right axis that extends in a front-and-rear direction of the vehicle body frame via an upper right bearing, a left end portion that supports an upper portion of the left side portion so as to turn about an upper left axis that is parallel or substantially parallel to the upper right axis via an upper left bearing, and a middle portion that is supported on the vehicle body frame so as to turn about an upper middle axis that is parallel or substantially parallel to the upper right axis and the upper left axis via an upper middle bearing; anda lower cross portion that includes a right end portion that supports a lower portion of the right side portion so as to turn about a lower right axis that is parallel or substantially parallel to the upper right axis via a lower right bearing, a left end portion that supports a lower portion of the left side portion so as to turn abut a lower left axis that is parallel or substantially parallel to the upper left axis via a lower left bearing, and a middle portion that is supported on the vehicle body frame so as to turn about a lower middle axis that is parallel or substantially parallel to the upper middle axis via a lower middle bearing; a steering shaft supported on the vehicle body frame between the right side portion and the left side portion in a left-and-right direction of the vehicle body frame, and including an upper end portion higher in the up-and-down direction of the vehicle body frame than the lower middle axis and that is turnable about a middle steering axis that extends in the up-and-down direction of the vehicle body frame; a handlebar provided at the upper end portion of the steering shaft; and a turn transfer mechanism configured to transfer a turning motion of the steering shaft according to an operation of the handlebar to the right shock absorbing device and the left shock absorbing device; wherein
with the lower cross portion removed and the upper cross portion mounted, an upper right displacement of the upper cross portion that results when a forward or rearward test force in relation to the upper right axis is exerted on the upper right bearing and an upper left displacement of the upper cross portion that results when a force that is equal or substantially equal in magnitude and direction as the test force is exerted on the upper left bearing are equal or substantially equal to each other; with the upper cross portion removed and the lower cross portion mounted, a lower right displacement of the lower cross portion that results when a force that is equal or substantially equal in magnitude and direction as the test force is exerted on the lower right bearing and a lower left displacement of the lower cross portion that results when a force that is equal or substantially equal in magnitude and direction as the test force is exerted on the lower left bearing are equal or substantially equal to each other; the upper right displacement of the upper cross portion and the lower right displacement of the lower cross portion are different from each other; the upper left displacement of the upper cross portion and the lower left displacement of the lower cross portion are different from each other; and a shape of the upper cross portion and a shape of the lower cross portion are different from each other.