Land vehicles – Wheeled – Occupant propelled type
Reexamination Certificate
1999-09-02
2001-12-04
Johnson, Brian L. (Department: 3618)
Land vehicles
Wheeled
Occupant propelled type
C280S276000, C180S219000, C074S554000
Reexamination Certificate
active
06325402
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a handlebars support structure for a motorcycle.
2. Description of the Relevant Art
A handlebars support structure for a motorcycle is disclosed in Japanese Unexamined Patent No. 2-169382. The Japanese Unexamined Patent relates to a handlebars support device which can absorb vibration sufficiently and produce good appearance. As shown in FIG.
9
and
FIG. 10
, the handlebars support device includes a front fork
116
and an upper bracket
113
fixed to the upper portion of the front fork
116
. A handlebars holder
112
mounted in a floating manner on the upper bracket
113
with a bolt
115
passed through an elastic bush
114
, and a pair of handlebars
110
,
111
mounted on the handlebars holder
112
.
In the technology described above, it is possible to absorb the small vibrations of the upper bracket
113
via the elastic bush
114
and to prevent the vibrations from propagating to the handlebars holder
112
and the handlebars
110
,
111
. However, it is difficult to absorb a large impact transmitted to the upper bracket
113
from the road via the wheel and the front fork
116
using only the deformation of the elastic bush
114
.
SUMMARY OF THE INVENTION
Taking the foregoing problems of the related art into consideration, it is an object of the present invention to provide a handlebars support structure for a motorcycle which can absorb small vibrations and large impacts, and thereby reduce vibrations from being transmitted to the handlebars.
Further, it is an object of the present invention to provide a handlebars support structure which improves the riding comfort of the motorcycle, improves the operational ease of the handlebars, and reduces fatigue caused by long hours of driving.
Moreover, it is an object of the present invention to provide a handlebars support structure which allows its components, such as a separated damper and spring, to be easily checked and replaced, thus improving maintainability as compared with a structure wherein the spring and the damper are integrally arranged.
These and other objects of the invention are fulfilled by a handlebars support structure for a motorcycle, said handlebars support structure comprising: a first member for attachment to the motorcycle; a second member pivotally mounted to said first member for holding handlebars; and a dampening unit connecting said first member and said second member.
Further, these and other objects of the invention are fulfilled by a handlebars support structure for a motorcycle, said handlebars support structure comprising: a top bridge for mounting on an upper portion of a front fork of the motorcycle; a rotary shaft mounted on said top bridge and extending horizontally and in a direction of a width of the motorcycle; a handlebars holder, for supporting handlebars, mounted on said rotary shaft such that said handlebars holder can move approximately up and down in direction; and a damping unit interposed between said handlebars holder and said top bridge.
Moreover, these and other objects of the invention are fulfilled by a motorcycle comprising: a front fork; a bridge attached to an upper portion of said front fork; a support structure attached to said bridge at a first pivotal engagement; handlebars attached to said support structure; and a damper having a first end attached to said bridge at a second pivotal engagement, and a second end attached to said support structure at a third pivotal engagement.
Other objects and further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
REFERENCES:
patent: 1502151 (1924-07-01), Meredith
patent: 3243006 (1966-03-01), Sparks
patent: 5511444 (1996-04-01), Clausen et al.
patent: 5752711 (1998-05-01), Moreau
patent: 6026939 (2000-02-01), Girvin et al.
patent: 2169382 (1990-06-01), None
Gogo Kazuhiko
Wakamatsu Kuniaki
Honda Giken Kogyo Kabushiki Kaisha
Johnson Brian L.
Luby Matthew
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