Land vehicles – Wheeled – Running gear
Reexamination Certificate
2002-04-15
2003-08-12
Dickson, Paul N. (Department: 3611)
Land vehicles
Wheeled
Running gear
C280S093510
Reexamination Certificate
active
06604757
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a steering control device of the front wheels of a beach motorized vehicle, and more particularly to a steering control device of the front wheels of a beach motorized vehicle, wherein the rotation moment produced by the swing arm may balance the forces of the left steering levers, thereby saving time and the manual work in operation of the steering levers, and thereby facilitating the user steering and operating the beach motorized vehicle.
2. Description of the Related Art
A conventional steering control device of the front wheels of a beach motorized vehicle in accordance with the prior art is shown in
FIGS. 1-5
.
The steering seat
11
of the beach motorized vehicle
10
has two sides each provided with an upright frame
12
, and two steering levers
20
each pivotally mounted on the upright frame
12
by a pivot member
14
. Each of the two steering levers
20
has a top provided with a handle
21
, a mediate portion formed with pivot hole
22
for passage of the pivot member
14
, and a bottom formed with a pivot hole
23
. The pivot hole
22
at the mediate portion of each of the two steering levers
20
is located adjacent to the bottom, so that each of the two steering levers
20
may have a longer arm of applying force, thereby saving energy in operation. The pivot hole
23
at the bottom of each of the two steering levers
20
is pivoted with a universal connector
25
by a nut
24
. The universal connector
25
is provided with a linking lever
26
which is connected to another universal connector
27
. The universal connector
27
is pivotally mounted on a pivot hole
31
formed in a rotation plate
30
. The rotation plate
30
has a periphery formed with the pivot hole
31
, a pivot hole
32
and a pivot hole
33
. The pivot hole
33
of the rotation plate
30
is pivoted on the horizontal rack
15
of the beach motorized vehicle
10
by a pivot member
34
. The pivot hole
32
of the rotation plate
30
is pivoted with a pull bar
40
by a pivot member
35
. The pull bar
40
has two ends each pivoted with one of the two rotation plates
30
. The bottom of the rotation plate
30
is provided with a pivot plate
36
which is formed with a pivot hole
37
. The pivot hole
37
of the pivot plate
36
of the rotation plate
30
is pivoted with a drive bar
50
. The drive bar
50
is extended forward to each of the two front wheels
16
and
17
. Each of the two front wheels
16
and
17
is controlled by an L-shaped control plate
60
. The control plate
60
is mounted between the drive bar
50
and each of the two front wheels
16
and
17
. The control plate
60
is formed with a pivot hole
63
pivoted on the drive bar
50
. Thus, the drive bar
50
may be pushed forward and may be pulled rearward, to drive the L-shaped control plate
60
which may drive the two front wheels
16
and
17
to turn leftward as shown in
FIG. 4
or turn rightward as shown in FIG.
5
.
However, the conventional steering control device of the front wheels of a beach motorized vehicle in accordance with the prior art has the following disadvantages.
1. The left-sided and right-sided rotation plates
30
are connected by the pull bar
40
. When the left-sided and right-sided steering levers
20
are moved to drive the left-sided and right-sided rotation plates
30
to rotate, the left-sided and right-sided rotation plates
30
are rotated in the same direction. Thus, it is necessary to directly pull and push the pull bar
60
, thereby consuming much time and manual work in operation.
2. The conventional steering control device consists of many parts including the left-sided and right-sided steering levers
20
, the universal connectors
25
and
27
, the linking levers
26
, the left-sided and right-sided rotation plates
30
, the pull bar
40
, the drive bars
50
, and the L-shaped control plates
60
, thereby complicating the construction of the conventional steering control device, and thereby increasing the costs of fabrication and maintenance.
SUMMARY OF THE INVENTION
The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional steering control device of the front wheels of a beach motorized vehicle.
The primary objective of the present invention is to provide a steering control device of the front wheels of a beach motorized vehicle, wherein the steering control device in accordance with the present invention uses a swing arm to replace the left-sided and right-sided rotation plates and the pull bar of the conventional steering control device. The rotation moment produced by the swing arm may balance the forces of the left-sided and right-sided steering levers, thereby saving time and the manual work in operation of the steering levers, and thereby facilitating the user steering and operating the beach motorized vehicle.
Another objective of the present invention is to provide a steering control device of the front wheels of a beach motorized vehicle, wherein the steering control device in accordance with the present invention uses a swing arm to replace the left-sided and right-sided rotation plates and the pull bar of the conventional steering control device, thereby reducing the composed parts and simplifying the construction, and thereby decreasing the costs of fabrication and maintenance.
In accordance with the present invention, there is provided a steering control device of the front wheels of a beach motorized vehicle, the beach motorized vehicle including a steering seat which has two sides each provided with an upright frame, two steering levers each pivotally mounted on the upright frame and each having a lower end pivoted with a first end of a linking lever by a first universal connector, and two front wheels each driven to turn by pivoting of an L-shaped control plate, wherein:
the steering control device includes a swing arm which crosses the beach motorized vehicle, the swing arm has a center formed with a pivot hole, so that the swing arm may be pivoted on a horizontal rack of the beach motorized vehicle by a pivot member, the swing arm has two ends each provided with a pivot plate which is formed with a pivot hole, a second universal connector is pivotally mounted on the pivot hole of the pivot plate of each of the two ends of the swing arm by a nut, and is mounted on a second end of the linking lever, each of the two ends of the swing arm is provided with a pivot hole which is located opposite to each of the two front wheels, two drive bars each having a first end pivotally connected to the pivot hole of each of the two ends of the swing arm by a pivot member and a nut, and each having a second end extended forward to the L-shaped control plate of each of the two front wheels; and wherein:
when each of the two steering levers is moved, the swing arm may be pivoted to move each of the two drive bars to simultaneously move and pivot the L-shaped control plate so as to turn each of the two front wheels.
REFERENCES:
patent: 4518170 (1985-05-01), Musgrove
patent: 4600216 (1986-07-01), Burkholder
patent: 6481731 (2002-11-01), McHale
Dickson Paul N.
Fleming Faye M.
Kamrath Alan D.
Rider Bennett LLP
Taiwan ATV Industrial Co., Ltd.
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