U.S. patent application number 13/189516 was filed with the patent office on 2012-07-12 for weight-based cushion-adjusting apparatus.
Invention is credited to TAI-YANG LU.
Application Number | 20120178590 13/189516 |
Document ID | / |
Family ID | 45081527 |
Filed Date | 2012-07-12 |
United States Patent
Application |
20120178590 |
Kind Code |
A1 |
LU; TAI-YANG |
July 12, 2012 |
Weight-Based Cushion-Adjusting Apparatus
Abstract
A treadmill includes a base, a lever, an elevator, a cushion, a
scale and an adjustor. The lever is connected to the base. The
elevator is connected to the lever at an end and supported on the
ground at another end. The cushion is connected to the base at an
end and connected to the lever at another end. The scale is
supported on the base. The adjustor is electrically connected to
the scale so that the adjustor adjusts the cushion based on the
weight of a user measured by the scale.
Inventors: |
LU; TAI-YANG; (Taichung
City, TW) |
Family ID: |
45081527 |
Appl. No.: |
13/189516 |
Filed: |
July 24, 2011 |
Current U.S.
Class: |
482/54 |
Current CPC
Class: |
A63B 22/0228 20151001;
A63B 2230/015 20130101; A63B 22/0235 20130101 |
Class at
Publication: |
482/54 |
International
Class: |
A63B 22/02 20060101
A63B022/02 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 10, 2011 |
TW |
100200506 |
Claims
1. A treadmill including: a base; a lever connected to the base; an
elevator connected to the lever at an end and supported on the
ground at another end; a cushion connected to the base at an end
and connected to the lever at another end; a scale supported on the
base; and an adjustor electrically connected to the scale so that
the adjustor adjusts the cushion based on the weight of a user
measured by the scale.
2. The treadmill according to claim 1, wherein the scale includes:
a tread; and a sensor provided between the tread and the base.
3. The treadmill according to claim 2, wherein the scale includes a
signal calculator electrically connected to the sensor.
4. The treadmill according to claim 1, wherein the cushion
includes: a cylinder including a closed end pivotally connected to
the lever and an open end; and a plunger inserted in the open end
of the cylinder at an end and pivotally connected to the base at
another end.
5. The treadmill according to claim 4, wherein the cushion further
includes: a ring formed on the cylinder; another ring formed on the
plunger; and a spring located around the plunger and compressed
between the rings.
6. The treadmill according to claim 4, wherein the adjustor
includes: a reservoir supported on the base; a valve connected to
the reservoir; and a pipe connected to the valve at an end and
connected to the cylinder at another end so that the cylinder, the
reservoir, the valve and the pipe form a loop in which a hydraulic
medium is circulated under the control of the valve.
7. The treadmill according to claim 6, wherein the adjustor further
includes a motor operable for driving the valve.
8. The treadmill according to claim 6, wherein the adjustor further
includes a mount for supporting the reservoir on the base.
Description
BACKGROUND OF INVENTION
[0001] 1. Field of Invention
[0002] The present invention relates to a treadmill and, more
particularly, to a treadmill equipped with an apparatus for
adjusting a cushion based on the weight of a user.
[0003] 2. Related Prior Art
[0004] As disclosed in Taiwanese Patent 1323669, a conventional
treadmill includes a base, a control panel supported on the base,
two rollers supported on the base, a platform supported on the base
between the rollers, a belt in the form of a loop wound around the
rollers and the platform, an acceleration sensor located beneath
the platform and electrically connected to the control panel, and
an adjustable cushion located beneath the platform and electrically
connected to the acceleration sensor. The acceleration sensor
senses actual acceleration of the platform and sends a signal to
the control panel. The control panel compares the actual
acceleration with data related to speed, acceleration and weight
recorded in a memory located therein. When actual acceleration is
determined to be identical to the data, the adjustable cushion is
not adjusted. Only when the actual acceleration is determined to be
different from the data, the adjustable cushion is adjusted.
[0005] However, it is practically impossible for an exerciser to
maintain constant acceleration no matter he or she is running or
walking. Hence, the adjustable cushion is adjusted all the time.
The frequent adjustment is a heavy load on the adjustable cushion.
Therefore, the life of the adjustable cushion is short, and this is
not desirable.
[0006] The present invention is therefore intended to obviate or at
least alleviate the problems encountered in prior art.
SUMMARY OF INVENTION
[0007] It is an objective of the present invention to provide a
treadmill with a cushion that is adjustable based on the weight of
a user.
[0008] To achieve the foregoing objectives, the treadmill includes
a base, a lever, an elevator, a scale and an adjustor in addition
to the cushion. The lever is connected to the base. The elevator is
connected to the lever at an end and supported on the ground at
another end. The cushion is connected to the base at an end and
connected to the lever at another end. The scale is supported on
the base. The adjustor is electrically connected to the scale so
that the adjustor adjusts the cushion based on the weight of a user
measured by the scale.
[0009] Other objectives, advantages and features of the present
invention will be apparent from the following description referring
to the attached drawings.
BRIEF DESCRIPTION OF DRAWINGS
[0010] The present invention will be described via detailed
illustration of the preferred embodiment referring to the drawings
wherein:
[0011] FIG. 1 is a perspective view of an electric treadmill
equipped with a cushion that is adjustable based on the weight of a
user according to the preferred embodiment of the present
invention;
[0012] FIG. 2 is a perspective view of a scale provided on the
electric treadmill shown in FIG. 1;
[0013] FIG. 3 is a perspective view of a cushion used in the
electric treadmill shown in FIG. 1;
[0014] FIG. 4 is a perspective view of an apparatus for adjusting
the cushion shown in FIG. 3;
[0015] FIG. 5 is a side view of an elevator and the cushion shown
in FIG. 3;
[0016] FIG. 6 is a side view of the elevator and cushion in another
position than shown in FIG. 5; and
[0017] FIG. 7 is a flow chart of a method for adjusting the cushion
based on the weight of a user.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0018] Referring to FIG. 1, there is shown an electric treadmill 10
equipped with a cushion 40 that is adjustable based on the weight
of a user according to the preferred embodiment of the present
invention. The electric treadmill 10 includes a base 11, a control
panel 12 supported on the base 11, front and rear rollers 16
supported on the base 11, a platform 15 supported on the base 11
between the front and rear rollers 16, a belt 17 in the form of a
loop wound around the platform 15 and the front and rear rollers
16, and a board 18 supported on the base 11. The base 11 is in the
form of a frame including two longitudinal bars extending between
two crossbars. The base 11 includes a front end 13 and a rear end
14. The control panel 12 and the board 18 are located near the
front end 13 of the base 11. The front roller 16 is located near
the front end 13 of the base 11 while the rear roller 16 is located
near the rear end 14 of the base 11.
[0019] The treadmill 10 further includes a motor 24 supported on
the board 18, a small pulley connected to the mandrel of the motor
24, a large pulley 26 connected to the front roller 16, and a belt
25 in the form of a loop wound around the small pulley and the
large pulley 26. The motor 24 is electrically connected to the
control panel 12. Thus, the control panel 12 is operable to actuate
the motor 24 to drive the large pulley 26 through the belt 25.
Then, the large pulley 26 drives the front roller 16, and the front
roller 16 drives the belt 17.
[0020] Referring to FIG. 3, the treadmill 10 further includes an
elevator 60 for elevating the base 11. In specific, the elevator 60
is operable to pivot the base 11 relative to the ground or a floor.
The elevator 60 includes a strut 19 pivotally connected to the base
11, a motor 61, and an extensible unit 62 connected to the strut 19
at an end and connected to the motor 61 through a transmission (not
shown) at another end. In detail, the unit 62 includes a screw
pivotally connected to the strut 19 and a sleeve including a screw
hole for receiving the screw. The sleeve is connected to the motor
61 through the transmission. The motor 61 is electrically connected
to the control panel 12. Thus, the control panel 12 is operable to
actuate the motor 61 to rotate the sleeve around the screw, thus
extending or shrinking the extensible unit 62 to pivot the strut 19
further from or closer to the base 11. Hence, the base 11 is
pivoted relative to the ground or floor about the second end 14 of
the base 11.
[0021] The treadmill 10 further includes two S-shaped levers 50
extending parallel to each other. Each of the levers 50 includes an
end pivotally connected to the base 11 and another end pivotally
connected to a portion of the elevator 60.
[0022] The cushion 40 includes a cylinder 41, a plunger 43 and a
spring 45. The cylinder 41 includes a closed end pivotally
connected to a middle section of each of the levers 50 and an open
end for receiving an end of the plunger 43. Another end of the
plunger 43 is pivotally connected to the base 11. A ring 42 is
formed on the cylinder 41 near the open end. Another ring 44 is
formed on the plunger 43. The spring 45 is located around the
plunger 43 and compressed between the rings 42 and 44. As described
above, the cushion 40 is connected to the base 11, the levers 50
are connected to the cushion 40, the elevator 60 is connected to
the levers 50, and the strut 19 is connected to the base 11 at an
end and located on the ground or floor at another end. Thus, the
cushion 40 is operable to provide cushion for the treadmill 10.
[0023] Referring to FIGS. 5 and 6, the control panel 12 is operable
to actuate the motor 61 to drive the extensible unit 62 through the
transmission. Thus, the length of the extensible unit 62 is
changed. Hence, the strut 19 is pivoted away from or closer to the
base 11. That is, the base 11 is lifted or lowered.
[0024] Referring to FIG. 4, the treadmill further includes an
adjustor for adjusting the cushion 40. The adjustor includes a
motor 30, a sleeve 32, a transmission 33, a valve 34, a mount 35, a
pipe 36 and a reservoir 37. The motor 30 includes a mandrel 31. The
motor 30 is supported on the board 18. The motor 30 is electrically
connected to the control panel 12. The sleeve 32 is provided on the
mandrel 31. The transmission 33 is provided between the sleeve 32
and the valve 34. The valve 34 is connected to the reservoir 37. An
inlet and outlet of the reservoir 37 is controlled by the valve 34.
The reservoir 37 is supported on the mount 35. The mount 35 is
supported on the board 18. The mount 35 is M-shaped. The pipe 36
includes an end connected to the valve 34 and another end connected
to the cylinder 41. A hydraulic medium such as cushion oil is
circulated in a loop formed by the reservoir 37, the valve 34, the
pipe 36 and the cylinder 41.
[0025] Referring to FIG. 2, the treadmill 10 further includes two
scales each supported on a related one of the longitudinal bars of
the base 11. Each of the scales includes a tread 20, a sensor 21
provided between the tread 20 and the related longitudinal bar of
the base 11, and a signal calculator 22 supported on the related
longitudinal bar of the base 11. The signal calculator 22 is
electrically connected to the sensor 21 at an end and electrically
connected to the control panel 12 at another end.
[0026] Referring to FIG. 7, the adjustment of the cushion 40 based
on the weight of the user will be described. At 70, the adjustment
is initiated. At 71, the cushion 40 is returned to an original
position. At 72, a screen is shown on the control panel 12. The
screen may include a reminder of an acceptable range of the weight
of the user. For example, the acceptable range of the weight of the
user may be 20 to 250 kilograms. At 73, the user stands on the
scales. The weight of the user is measured by the scales. The
process goes to 75 if the weight of the user is acceptable and goes
to 74 if not. At 74, a warning is shown on the control panel 12 to
instruct the user to send for an engineer to repair the treadmill
10. At 75, the weight of the user, in kilogram or pound, is shown
on the control panel 12. At 76, the user operates the control panel
12 to select "Retest" or "OK." The process goes to 77 if "OK" is
selected and returns to 72 if "Retest" is selected. At 77, under
the control of the control panel 12, the cushion 40 is
automatically adjusted based on the weight of the user.
[0027] The present invention has been described via the detailed
illustration of the preferred embodiment. Those skilled in the art
can derive variations from the preferred embodiment without
departing from the scope of the present invention. Therefore, the
preferred embodiment shall not limit the scope of the present
invention defined in the claims.
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