Leaning vehicle

Patent metadata

Field	Value
Publication number	US-11999436-B2
Application number	US-202217679932-A
Country	US
Kind code	B2
Filing date	Feb 24, 2022
Priority date	Aug 30, 2019
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

A leaning vehicle including a vehicle body frame having a main framework part, a seat, left and right steps, left and right front wheels, at least one rear wheel, a leaning linkage mechanism including left and right swing arms swingably supporting the left and right front wheels and connected to the vehicle body frame via left and right support parts, respectively, and a buffer device buffering movement of the left and right front wheels. The leaning vehicle leans the vehicle body frame leftward and rightward when turning left and right, respectively. The main framework part includes a main-framework-front portion that is located further forward than centers of the left and right steps, that is wider than a distance between the left and right support parts, and that supports the leaning linkage mechanism at a position further downward than at least a part of the left and right steps.

First claim

The invention claimed is:

1. A leaning vehicle comprising:
a vehicle body frame including a main framework part;
a seat supported by the vehicle body frame and being configured for a driver of the leaning vehicle to be seated thereon;
a left step and a right step supported by the vehicle body frame, and each having an upper surface for a foot of the driver to be placed thereon;
a left front wheel located at a left side of the vehicle body frame;
a right front wheel located at a right side of the vehicle body frame;
at least one rear wheel;
a leaning linkage mechanism configured to support the vehicle body frame, the left front wheel, and the right front wheel, such that the vehicle body frame, the left front wheel, and the right front wheel are leanable leftward or rightward, the leaning linkage mechanism including
a left swing arm swingably supporting the left front wheel, the left swing arm being connected to the vehicle body frame via a left support part, and
a right swing arm swingably supporting the right front wheel, the right swing arm being connected to the vehicle body frame via a right support part; and

a buffer device configured to buffer movement of the left front wheel and the right front wheel, wherein
the leaning vehicle leans the vehicle body frame, the left front wheel, the right front wheel, and the at least one rear wheel leftward and rightward when turning left and right, respectively;
the main framework part includes a main-framework-front portion that
is located further forward than a center of the left step and a center of the right step in a front-rear direction of the leaning vehicle, and extends linearly in the front-rear direction,
has a dimension, in a width direction of the leaning vehicle, larger than a distance between the left support part and the right support part;

the vehicle body frame supports entire parts of the left support part and the right support part of the leaning linkage mechanism at a position further downward than at least a part of the upper surface of the left step and of the upper surface of the right step in a top-bottom direction with respect to the leaning vehicle; and
the entire main-framework-front portion is located further downward than at least the part of the upper surface of the left step and the part of the upper surface of the right step.

2. The leaning vehicle according to claim 1 , wherein
the main framework part is located between the left step and the right step in a plan view of the leaning vehicle.

3. The leaning vehicle according to claim 2 , wherein
the main framework part extends linearly in the front-rear direction, such that the main framework part is between legs of the driver in a state where the driver is seated on the seat and the feet of the driver are placed on the left step and the right step.

4. The leaning vehicle according to claim 1 , wherein
the main framework part extends linearly in the front-rear direction and is located further downward than the upper surfaces of the left step and the right step in the top-bottom direction with respect to the leaning vehicle.

5. The leaning vehicle according to claim 1 , further comprising a driving source, wherein
the main framework part further includes a main-framework-rear portion that is located further rearward than the center of the left step and the center of the right step in the front-rear direction and supports the seat, the at least one rear wheel, and the driving source.

6. The leaning vehicle according to claim 1 , further comprising a steering handle configured to rotate about a steering axis by operation of the driver, wherein
the vehicle body frame further includes a handlebar support part rotatably supporting the steering handle, and
the handlebar support part is different from the main framework part, and extends upward from an upper portion of the main framework part.

7. The leaning vehicle according to claim 6 , wherein
at least a part of the handlebar support part extends upward from an upper portion of the main-framework-front portion.

8. The leaning vehicle according to claim 6 , wherein
an upper end of the main-framework-front portion is lower than a lower end of the steering handle.

9. The leaning vehicle according to claim 6 , wherein
an upper end of the handlebar support part is higher than a seat surface of the seat.

10. The leaning vehicle according to claim 1 , wherein
the leaning linkage mechanism is configured to be detachable from the main framework part and the handlebar support part.

11. The leaning vehicle according to claim 1 , wherein
an upper end of the main-framework-front portion is lower than a seat surface of the seat.

12. The leaning vehicle according to claim 1 , wherein
an upper end of the main-framework-front portion is lower than an upper end of the leaning linkage mechanism.

13. The leaning vehicle according to claim 1 , wherein
a track width between the left front wheel and the right front wheel is larger than a distance between a left end of the left step and a right end of the right step.

Assignees

• Yamaha Motor Co Ltd

Inventors

• Ohno Kohsuke

Classifications

• B62K5/10 Primary

  with means for inwardly inclining the vehicle body on bends · CPC title

• B62K11/04

  characterised by the engine being between front and rear wheels · CPC title

• B62K5/08

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

• B62J25/04

  Floor-type foot rests · CPC title

• B62K5/05

  characterised by a single rear wheel · CPC title