U.S. patent application number 10/923805 was filed with the patent office on 2006-03-02 for treadmill.
Invention is credited to Chih Yuan Chang, Hsiang Yi Wang.
Application Number | 20060046904 10/923805 |
Document ID | / |
Family ID | 35944180 |
Filed Date | 2006-03-02 |
United States Patent
Application |
20060046904 |
Kind Code |
A1 |
Chang; Chih Yuan ; et
al. |
March 2, 2006 |
Treadmill
Abstract
A treadmill including two supporting mechanisms respectively
disposed under two pedals. Each supporting mechanism includes a
rock arm one end of which is pivotally connected with the bottom of
each pedal. The other end of the rock arm via a pivot shaft is
pivotally connected with one end of a supporting arm. The other end
of the supporting arm is connected with a frame body of the
treadmill.
Inventors: |
Chang; Chih Yuan; (Daya
Township, TW) ; Wang; Hsiang Yi; (Taichung City,
TW) |
Correspondence
Address: |
ROSENBERG, KLEIN & LEE
3458 ELLICOTT CENTER DRIVE-SUITE 101
ELLICOTT CITY
MD
21043
US
|
Family ID: |
35944180 |
Appl. No.: |
10/923805 |
Filed: |
August 24, 2004 |
Current U.S.
Class: |
482/54 ;
482/52 |
Current CPC
Class: |
A63B 22/0235 20130101;
A63B 22/0214 20151001; A63B 22/0292 20151001; A63B 22/0664
20130101; A63B 22/0056 20130101; A63B 2022/067 20130101 |
Class at
Publication: |
482/054 ;
482/052 |
International
Class: |
A63B 22/04 20060101
A63B022/04; A63B 22/02 20060101 A63B022/02 |
Claims
1. A treadmill comprising: a frame body; two pedals side by side
pivotally mounted on the frame body, each pedal being looped with
an endless belt; and a pivoting linking mechanism disposed on an
inner side of a front beam of the frame body for alternatively
mutually driving the pedals, a dampening cylinder being disposed
between each pedal and the frame body, the dampening cylinder being
connected with a supporting mechanism, whereby when the pedals are
mutually drivingly moved in reverse directions, the dampening
cylinders serve to buffer movement thereof, said treadmill being
characterized in that the supporting mechanism is mounted under
each pedal and includes a linkage arm one end of which is pivotally
connected with a bottom of each pedal, the other end of the linkage
arm via a pivot shaft being pivotally connected with one end of a
supporting arm, the other end of the supporting arm being connected
with the frame body.
2. The treadmill as claimed in claim 1, wherein each linkage arm
includes two corresponding side slats pivotally connected with each
other via a pivot shaft, each supporting arm including two
corresponding side slats pivotally connected with each other via a
pivot shaft, each linkage arm and a corresponding supporting arm
being pivotally connected with each other via a pivot shaft to
contain an angle and form a V-shaped structure.
3. The treadmill as claimed in claim 1, wherein the supporting
mechanism is drivingly connected with the pivoting linking
mechanism, the pivoting linking mechanism including a pulley and a
pull cord wound over the pulley, two ends of the pull cord being
respectively connected to the pivot shafts pivotally connecting the
linkage arms with the supporting arms, whereby the two pedals are
mutually drivingly movable.
4. The treadmill as claimed in claim 1, wherein a connecting beam
is connected between two lengthwise beams of the frame body, the
supporting arm via a pivot plate being pivotally connected with the
connecting beam.
5. The treadmill as claimed in claim 1, wherein the supporting
mechanism is drivingly connected with the pivoting linking
mechanism, the pivoting linking mechanism including a linking
bracket and two operating bars pivotally connected with the linking
bracket, the operating bars being also pivotally connected with the
pivot shafts pivotally connecting the linkage arms with the
supporting arms, whereby the two pedals are mutually drivingly
movable.
Description
BACKGROUND OF THE INVENTION
[0001] The present invention is related to a treadmill having two
side by side arranged pedals. The pedals are effectively supported
so that the operation of the treadmill is stabilized to ensure
safety.
[0002] A conventional treadmill includes two independent pedals
pivotally mounted on a seat body. Each pedal is equipped with a
buffering restoring cylinder, whereby after the pedal is treaded,
the buffering restoring cylinder can buffer and restore the pedal
to its home position. In such structure, a supporting mechanism is
disposed under each pedal for supporting the pedal. However, the
supporting mechanism can hardly stably support the pedal.
Therefore, a user can hardly smoothly and safely tread the pedals.
Also, it is inconvenient to use such treadmill.
SUMMARY OF THE INVENTION
[0003] It is therefore a primary object of the present invention to
provide a treadmill in which two side by side arranged pedals are
stably supported by two supporting mechanisms so that the pedals
can be safely and smoothly treaded.
[0004] According to the above object, the treadmill of the present
invention includes: a frame body; two pedals side by side pivotally
mounted on the frame body, each pedal being looped with a
circulating belt; and a pivoting linking mechanism disposed on
inner side of a front beam of the frame body for alternatively
mutually driving the pedals. A buffering cylinder is disposed
between each pedal and the frame body. The buffering cylinder is
connected with a supporting mechanism, whereby when the pedals are
mutually drivingly moved in reverse directions, the buffering
cylinders serve to buffer the movement. The supporting mechanism is
mounted under each pedal and includes a rock arm one end of which
is pivotally connected with a bottom of each pedal. The other end
of the rock arm via a pivot shaft is pivotally connected with one
end of a supporting arm. The other end of the supporting arm is
connected with the frame body.
[0005] The present invention can be best understood through the
following description and accompanying drawings wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] FIG. 1 is a perspective view of the present invention;
[0007] FIG. 2 is a perspective view of the present invention, in
which the pedals are removed;
[0008] FIG. 3 is a side view of the present invention;
[0009] FIG. 4 is a side view of the present invention, showing the
operation thereof;
[0010] FIG. 5 is a top view of the present invention, showing the
operation thereof; and
[0011] FIG. 6 is a top view of another embodiment of the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0012] Please refer to FIGS. 1 to 5. The treadmill of the present
invention includes a frame body 1, a pivoting linking mechanism 3
mounted in the frame body 1 and two pedals 2A, 2B side by side
pivotally mounted on the frame body 1. Each pedal 2A, 2B is looped
with a circulating belt 21A, 21B. In this embodiment, the pivoting
linking mechanism 3 includes a pulley 31 disposed on inner side of
a front beam 11 of the frame body 1 and a pull cord 32 wound over
the pulley 31. Two ends of the pull cord 32 are respectively
connected to two supporting mechanisms 30 which are respectively
mounted under the pedals 2A, 2B. Each supporting mechanism 30 has a
rock arm 33 one end of which is pivotally connected with the bottom
of each pedal 2A, 2B. The other end of the rock arm 33 via a pivot
shaft 35 is pivotally connected with one end of a supporting arm
34. The rock arm 33 includes two corresponding side slats 331
pivotally connected with each other via a pivot shaft 332. The
supporting arm 34 includes two corresponding side slats 341
pivotally connected with each other via a pivot shaft 342. The rock
arm 33 and the supporting arm 34 contain an angle to form a
V-shaped structure.
[0013] A connecting beam 8 is connected between two lengthwise
beams 6, 7 of the frame body 1. The supporting mechanism 30 is
mounted on the connecting beam 8. The supporting arm 34 via a pivot
plate 81 is pivotally connected with the connecting beam 8, whereby
the supporting arm 34 can be pivoted up or down.
[0014] An adjustment bolt 36 is connected with the pulley 31. The
adjustment bolt 36 extends out of the front beam 11 and has an
adjustment section 361 disposed on outer side of the front beam 11
for easy adjustment. Accordingly, through the pivoting linking
mechanism 3 and the supporting mechanism 30, the elevation of the
pedals 2A, 2B can be adjusted. In addition, a buffering cylinder 4
is disposed between each pedal 2A, 2B and the frame body 1. The
buffering cylinder 4 is connected with the rock arm 33, whereby
when the pedals 2A, 2B are mutually drivingly moved in reverse
directions, the buffering cylinders 4 serve to buffer the movement.
Also, the pull cord 32 serves to help the buffering cylinders 4 in
restoring the pedals.
[0015] In actual operation, when a left foot of a user treads the
pedal 2B, the pedal 2B is swung downward. At this time, the rock
arm 33 and supporting arm 34 of the supporting mechanism 30 are
pressed downward and folded to a predetermined minimum angle. The
minimum angle is larger than zero degree. (When unfolded, the
maximum angle is smaller than 180 degrees.) At the same time, the
buffering cylinder 4 is retracted. Accordingly, the pedal 2B can be
stably supported by the supporting mechanism 30 and smoothly swung
as shown in FIG. 4. At this time, the pull cord 32 on the pulley 31
is tracked left and right. When the left foot treads the left pedal
2B, the right pedal 2A is tracked by the pull cord 32 as shown in
FIG. 5. Reversely, when the right foot of the user treads the right
pedal 2A, the driving movement is reversely performed. Accordingly,
the left and right pedals 2A, 2B are repeatedly alternately treaded
to achieve an exercising effect.
[0016] The side by side arranged pedals 2A, 2B of the present
invention are supported by the rock arms 33 and the supporting arms
34 of the supporting mechanisms 30, which are pivotally connected
with each other. Therefore, when the pedals 2A, 2B are pressed down
or elevated, the rock arms 33 and the supporting arms 34 are stably
pressed and folded or unfolded to a preset angle. Accordingly, a
user can smoothly tread the pedals. The supporting mechanism 30
cooperates with the pivoting linking mechanism 3 in stabilizing the
operation of the treadmill so as to ensure safety.
[0017] FIG. 6 shows a second embodiment of the present invention,
in which the pivoting linking mechanism 3 alternatively includes a
linking bracket 9. Two operating bars 91 are pivotally connected
with the linking bracket 9 and the pivot shafts 35 pivotally
connecting the rock arms 33 with the supporting arms 34.
Accordingly, the two pedals 2A, 2B are also mutually drivingly
movable to achieve the same effect as the first embodiment.
[0018] The above embodiments are only used to illustrate the
present invention, not intended to limit the scope thereof. Many
modifications of the above embodiments can be made without
departing from the spirit of the present invention.
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