Vehicle

Patent metadata

Field	Value
Publication number	US-9452806-B2
Application number	US-201314430368-A
Country	US
Kind code	B2
Filing date	Sep 24, 2013
Priority date	Sep 24, 2012
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

At least a portion of a tie rod of a steering force transmitting mechanism overlaps with a portion of a first support member or a second support member when viewed from a front of a vehicle in a fully-tilted condition in which the vehicle body frame is fully tilted in the left-right direction. At least a portion of the tie rod is disposed below a second cross member, above a first front wheel and a second front wheel, behind a front end of the first front wheel and a front end of the second front wheel, and ahead of a first axis of a first side member and a second axis of a second side member when viewed from the left or right of the vehicle when the vehicle body frame is in an upright state.

First claim

The invention claimed is:

1. A vehicle comprising:
a vehicle body frame;
a first front wheel and a second front wheel arranged side by side in a left-right direction of the vehicle body frame;
a first support member including:
a first shock-absorbing member supporting the first front wheel at a lower portion thereof, and configured to absorb displacement of the first front wheel in an up-down direction of the vehicle body frame relative to an upper portion thereof; and
a first bracket supporting the upper portion of the first shock-absorbing member;

a second support member including:
a second shock-absorbing member supporting the second front wheel at a lower portion thereof and configured to absorb displacement of the second front wheel in the up-down direction of the vehicle body frame relative to an upper portion thereof; and
a second bracket supporting the upper portion of the second shock-absorbing member;

a link mechanism including:
a first side member disposed such that a lower portion thereof is located in front of an upper portion thereof in a front-rear direction of the vehicle body frame and supporting the upper portion of the first support member so as to be turnable about a first axis extending in the up-down direction of the vehicle body frame;
a second side member disposed such that a lower portion thereof is located in front of an upper portion thereof in the front-rear direction of the vehicle body frame and supporting the upper portion of the second support member so as to be turnable about a second axis extending parallel or substantially parallel to the first axis;
an upper turnable member turnably supporting the upper portion of the first side member at a left end portion thereof and turnably supporting the upper portion of the second side member at a right end portion thereof, the upper turnable member including an intermediate portion supported on the vehicle body frame so as to be turnable about an upper axis extending in the front-rear direction of the vehicle body frame; and
a lower turnable member turnably disposed below the upper turnable member and above the first front wheel and the second front wheel when the vehicle body frame is in an upright state, the lower turnable member supporting the lower portion of the first side member at a left end portion thereof and turnably supporting the lower portion of the second side member at a right end portion thereof, the lower turnable member including an intermediate portion supported on the vehicle body frame so as to be turnable about a lower axis extending parallel or substantially parallel to the upper axis and disposed in front of the first axis and the second axis;

a steering shaft supported by the vehicle body frame at a position between the first side member and the second side member in a left-right direction of the vehicle body frame and including an upper end portion disposed above the lower axis in the up-down direction, the steering shaft being disposed such that a lower end portion thereof is located in front of the upper end portion in the front-rear direction of the vehicle body frame and configured to turn about a steering turn axis extending in the up-down direction of the vehicle body frame;
a handle disposed on the upper end portion of the steering shaft; and
a steering force transmitting mechanism including a tie rod extending in the left-right direction of the vehicle body frame, and configured to transmit a turning motion of the steering shaft in accordance with an operation of the handle to the first support member and the second support member; wherein
at least a portion of the tie rod of the steering force transmitting mechanism overlaps with a portion of the first support member or the second support member such that the tie rod is positioned ahead of the first support member and the second support member when viewed from a front of the vehicle when the vehicle body frame is in a fully-tilted condition in the left-right direction; and
an entirety of the tie rod of the steering force transmitting mechanism is disposed below the lower turnable member, above the first front wheel and the second front wheel, behind a front end of the first front wheel and a front end of the second front wheel, and in front of the first axis of the first side member and the second axis of the second side member when viewed from a lateral side of the vehicle when the vehicle body frame is in the upright state.

2. The vehicle according to claim 1 , wherein at least a portion of the tie rod is disposed below an upper end of the first bracket of the first support member and an upper end of the second bracket of the second support member when viewed from the lateral side of the vehicle when the vehicle body frame is in the upright state.

3. A vehicle comprising:
a vehicle body frame;
a first front wheel and a second front wheel arranged side by side in a left-right direction of the vehicle body frame;
a first support member including:
a first shock-absorbing member supporting the first front wheel at a lower portion thereof, and configured to absorb displacement of the first front wheel in an up-down direction of the vehicle body frame relative to an upper portion thereof; and
a first bracket supporting the upper portion of the first shock-absorbing member;

a second support member including:
a second shock-absorbing member supporting the second front wheel at a lower portion thereof and configured to absorb displacement of the second front wheel in the up-down direction of the vehicle body frame relative to an upper portion thereof; and
a second bracket supporting the upper portion of the second shock-absorbing member;

a link mechanism including:
a first side member disposed such that a lower portion thereof is located in front of an upper portion thereof in a front-rear direction of the vehicle body frame and supporting the upper portion of the first support member so as to be turnable about a first axis extending in the up-down direction of the vehicle body frame;
a second side member disposed such that a lower portion thereof is located in front of an upper portion thereof in the front-rear direction of the vehicle body frame and supporting the upper portion of the second support member so as to be turnable about a second axis extending parallel or substantially parallel to the first axis;
an upper turnable member turnably supporting the upper portion of the first side member at a left end portion thereof and turnably supporting the upper portion of the second side member at a right end portion thereof, the upper turnable member including an intermediate portion supported on the vehicle body frame so as to be turnable about an upper axis extending in the front-rear direction of the vehicle body frame; and
a lower turnable member turnably disposed below the upper turnable member and above the first front wheel and the second front wheel when the vehicle body frame is in an upright state, the lower turnable member supporting the lower portion of the first side member at a left end portion thereof and turnably supporting the lower portion of the second side member at a right end portion thereof, the lower turnable member including an intermediate portion supported on the vehicle body frame so as to be turnable about a lower axis extending parallel or substantially parallel to the upper axis and disposed in front of the first axis and the second axis;

a steering shaft supported by the vehicle body frame at a position between the first side member and the second side member in a left-right direction of the vehicle body frame and including an upper end portion disposed above the lower axis in the up-down direction, the steering shaft being disposed such that a lower end portion thereof is located in front of the upper end portion in the front-rear direction

Assignees

• Yamaha Motor Co Ltd

Inventors

• Hirayama Yosuke
• Iizuka Toshio
• Kubo Yutaka
• Watanabe Takahiro
• Miyamoto Noboru
• Sasaki Kaoru
• Ogawa Hirokatsu

Classifications

• B62K21/02

  Front wheel forks or equivalent, e.g. single tine · CPC title

• B62K21/20 Primary

  resilient · CPC title

• B60G17/005 Primary

  Suspension locking arrangements {(for retractable wheels B62D61/12)} · CPC title

• B60G3/20

  all arms being rigid · CPC title

• B62K5/027

  Motorcycles with three wheels (specially adapted for disabled riders B62K5/023) · CPC title