U.S. patent application number 13/441065 was filed with the patent office on 2013-10-10 for foldable treadmill having lifting mechanism.
This patent application is currently assigned to STRENGTH MASTER FITNESS TECH CO., LTD.. The applicant listed for this patent is GUO-DUAN HER. Invention is credited to GUO-DUAN HER.
Application Number | 20130267386 13/441065 |
Document ID | / |
Family ID | 49292763 |
Filed Date | 2013-10-10 |
United States Patent
Application |
20130267386 |
Kind Code |
A1 |
HER; GUO-DUAN |
October 10, 2013 |
FOLDABLE TREADMILL HAVING LIFTING MECHANISM
Abstract
A foldable treadmill having lifting mechanism is provided. A
base is connected to a running platform through two swing arms. The
running platform controlled by the actuation device and the link of
a lifting mechanism is upwardly swung on the base. When the lifting
mechanism is activated, the link is moved on a support surface.
When the actuation device is stretched out, the running platform is
lifted and backwardly shifted relative to the stand post. When the
actuation device is contracted, the running platform is descended
and forwardly shifted relative to the the stand post.
Inventors: |
HER; GUO-DUAN; (TAICHUNG
CITY, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
HER; GUO-DUAN |
TAICHUNG CITY |
|
TW |
|
|
Assignee: |
STRENGTH MASTER FITNESS TECH CO.,
LTD.
TAICHUNG CITY
TW
|
Family ID: |
49292763 |
Appl. No.: |
13/441065 |
Filed: |
April 6, 2012 |
Current U.S.
Class: |
482/54 |
Current CPC
Class: |
A63B 22/02 20130101;
A63B 2210/56 20130101; A63B 22/0023 20130101 |
Class at
Publication: |
482/54 |
International
Class: |
A63B 22/02 20060101
A63B022/02 |
Claims
1. A foldable treadmill having lifting mechanism characterized in
that: a base, two sides of the base having a member respectively,
one end of each member having a stand post that is upwardly
disposed; a running platform having a pivot portion respectively at
the front end; a lifting mechanism disposed between the base and
the running platform and comprising a telescopic actuation device
and a link, one end of the link connected to the pivot portion, one
end of the actuation device connected to the running platform while
another end of the actuation device connected to the link, wherein
when the lifting mechanism is activated, another end of the link
moves on a support surface, and when the actuation device is
stretched, the running platform is lifted and backwardly shifted
relative to the stand post, and when the actuation device is
contracted, the running platform is descended and forwardly shifted
relative to the stand post; two swing arms, one end of the two
swing arms connected to the pivot portion of the running platform
while another end of the two swing arms pivotally connected to the
base and located between front and rear ends of the member.
2. The foldable treadmill having lifting mechanism as recited in
claim 1, characterized in that the support surface is a rail, and
the rail is parallel the member.
3. The foldable treadmill having lifting mechanism as recited in
claim 1, characterized in that a support component is disposed
between the running platform and the base to support the running
platform that is folded.
4. The foldable treadmill having lifting mechanism as recited in
claim 1, characterized in that the link comprises two support rods,
and a horizontal rod is connected between the two support rods, one
end of the actuation device is pivotally connected to the
horizontal rod, one end of the two support rods is pivotally
connected to the pivot portion of the running platform, and another
end of each support rod is moved on the support surface.
5. The foldable treadmill having lifting mechanism as recited in
claim 1, characterized in that the actuation device comprises a
lift motor, a screw and a sleeve, one end of the sleeve is
pivotally connected to the link.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a foldable treadmill, and
more particularly to a foldable treadmill having lifting
mechanism.
[0003] 2. Description of the Related Art
[0004] As shown in FIG. 5, a conventional foldable treadmill is
provided. A running platform 91 is disposed on a bottom base 90.
Two sides of the running platform 91 are connected to two sides of
the bottom base 90 through swing arms 92. The two sides of the
running platform 91 are pivotally connected to a support rod 93 so
that the running platform 91 is slidely supported on the bottom
base 90. The running platform 91 can be lifted relative to the
bottom base 90 through the raising mechanism 94 between the bottom
base 90 and the running platform 91 to allow the running platform
91 to produce a predetermined inclination relative to the bottom
base 90.
[0005] When the running platform of the conventional foldable
treadmill is lifted, the raising motor 940 of the raising mechanism
94 is operated to drive the screw 941 to shift the sleeve 942. As
shown in FIG. 5, when the raising motor 940 drives the sleeve 942
to stretch out relative to the screw 941, two support rods 93 is
forwardly pushed by the sleeve 942. Two swing arms 92 downwardly
swing in accordance with the support rod 93. The running platform
91 is downwardly swung to restore. Reversely, as shown in FIG. 6,
when the raising motor 940 drives the sleeve 942 to contract
relative to the screw 941, the two support rods 93 are backwardly
pulled back through the sleeve. The two swing arms 92 are upwardly
swung in accordance with the support rod 93. The running platform
91 is upwardly swung to achieve lifting.
[0006] However, the conventional foldable treadmill has the
following problems. [0007] 1. It can be obviously seen in FIG. 6,
when the swing arm 92 is driven by the support rod 93 to upwardly
swing, when the running platform 91 is upwardly swung to achieve
the lifting. The running platform 91 is shifted toward a front at a
horizontal direction. The space capable of being run by a runner is
relatively reduced. If the running space is satisfied with an
original design, the shortened length must be compensated during
the design of the running platform 91. When the length of the
running platform 91 is slightly extended, the problem of increasing
component costs will be caused. [0008] 2. For the design of the
raising motor, the pushing force for stretching the sleeve in
accordance with the screw is greater than the pulling force for
contracting the sleeve in accordance with the screw. For the
structure of the conventional foldable treadmill, the motion of
upwardly swinging the running platform 91 is caused by the pulling
force for contracting the sleeve 942 in accordance with the screw
941. If the running platform 91 that is upwardly swung would like
to be accurately positioned, the support relying on the pulling
force is still not enough. The foregoing problem must be
improved.
[0009] Therefore, improving the problem of the conventional
foldable treadmill becomes an important issue.
SUMMARY OF THE INVENTION
[0010] In view of the shortcomings of the prior art, the
inventor(s) of the present invention based on years of experience
in the related industry to conduct extensive researches and
experiments, and finally developed a foldable treadmill having
lifting mechanism as a principle objective that does not reduce the
space for running when the running platform is upwardly swing to
cause lifted state and that increases the using space on the
running platform so that the length is not specifically increased
while designing the running platform. Further, the length can be
reduced to achieve the effect of reducing component costs.
[0011] A second objective of the invention is that the movement of
lifting the running platform is caused by the pushing force of the
sleeve of the lifting mechanism in accordance with the stretching
of the screw so that it provides excellent positioning and support
effects when a runner runs on the running platform.
[0012] To achieve the foregoing objective, the invention comprises:
a base, two sides of the base having a member respectively, one end
of each member having a stand post that is upwardly disposed; a
running platform having a pivot portion respectively at the front
end; a lifting mechanism disposed between the base and the running
platform and comprising a telescopic actuation device and a link,
one end of the link connected to the pivot portion, one end of the
actuation device connected to the running platform while another
end of the actuation device connected to the link, wherein when the
lifting mechanism is activated, another end of the link moves on a
support surface, and when the actuation device is stretched, the
running platform is lifted and backwardly shifted relative to the
stand post, and when the actuation device is contracted, the
running platform is descended and forwardly shifted relative to the
stand post; two swing arms, one end of the two swing arms connected
to the pivot portion of the running platform while another end of
the two swing arms pivotally connected to the base and located
between front and rear ends of the member.
[0013] The support surface is a rail, and the rail is parallel the
member.
[0014] A support component is disposed between the running platform
and the base to support the running platform that is folded.
[0015] The link comprises two support rods, and a horizontal rod is
connected between the two support rods, one end of the actuation
device is pivotally connected to the horizontal rod, one end of the
two support rods is pivotally connected to the pivot portion of the
running platform, and another end of each support rod is moved on
the support surface.
[0016] The actuation device comprises a lift motor, a screw and a
sleeve, one end of the sleeve is pivotally connected to the
link.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 is a three-dimensional drawing according to the
invention;
[0018] FIG. 2 is a decomposition drawing according to the
invention;
[0019] FIG. 3 is a schematic diagram of a running platform at a
horizontal state according to the invention;
[0020] FIG. 4 is a schematic diagram of a running platform at a
lifted state according to the invention;
[0021] FIG. 5 is a schematic diagram of a running platform of a
conventional foldable treadmill at a horizontal state;
[0022] FIG. 6 is a schematic diagram of a running platform of a
conventional foldable treadmill at a lifted state.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] The foregoing and other technical characteristics of the
present invention will become apparent with the detailed
description of the preferred embodiments and the illustration of
the related drawings.
[0024] With reference to FIG. 1 to FIG. 4, the structure shown in
the figures is the embodiment selected by the invention and taken
as the depiction and may not be restricted during patent
application.
[0025] The embodiment provides a foldable treadmill having lifting
mechanism comprising a base 1, a running platform 2, and a lifting
mechanism 3. Two swing arms 4 are connected between the base 1 and
the running platform 2 so that the running platform 2 can be raised
relative to the base 1. As shown in FIG. 1 to FIG. 2, two sides of
the base 1 respectively have a member 10, and one end of each
member 10 has a stand post 12 that is upwardly disposed.
[0026] As shown in FIG. 1 to FIG. 2, a front end of the running
platform 2 has a pivot portion 20. In the embodiment, a support
component 5 is disposed between the running platform 2 and the base
1 to support the running platform 2 that is folded.
[0027] As shown in FIG. 1 to FIG. 3, the lifting mechanism 3 is
disposed between the base 1 and the running platform 2 to lift the
running platform 2 relative to the base 1. The lifting mechanism 3
comprises a telescopic actuation device 30 and a link 31. One end
of the actuation device 30 is connected to the running platform 2
while another end is connected to the link 31. When the lifting
mechanism 3 is activated, another end of the link 31 is moved at a
support surface 110. When the actuation device 30 is stretched, the
running platform 2 is lifted and backwardly shifted relative to the
stand post 12. When the actuation device 30 is contracted, the
running platform 2 is descended and forwardly shifted relative the
location of the stand post 12. In the embodiment, the support
surface 110 can be a guide rail 11. The guide rail 11 parallels the
member 10.
[0028] As shown in FIG. 1 to FIG. 3, one end of the two swing arms
4 is pivotally disposed to the pivot portion 20 of the running
platform 2 while another end is pivotally connected to the base 1
and located between the two front and rear ends of the member
10.
[0029] As shown in FIG. 1 to FIG. 3, the link 31 in the embodiment
comprises two support rods 310 and a horizontal rod 311 between the
two support rods 310. One end of the actuation device 30 is
pivotally connected to the horizontal rod 311. One end of the two
support rods 310 is pivotally connected to the pivot portion 20 of
the running platform 2, and another end of each support rod 310 can
be moved at the support surface 110.
[0030] As shown in FIG. 1 to FIG. 3, the actuation device 30 of the
embodiment comprises a lift motor 300, a screw 301 and a sleeve
302. One end of the sleeve 302 is pivotally connected to the
horizontal rod 311.
[0031] As shown in FIG. 4, when the running platform 2 is lifted
relative to the base 1, and when the lift motor 300 is activated,
the sleeve 302 is stretched out in accordance with the rotation of
the screw 301. Since the lifting motor 300 is fastened at the
running platform 2 so that the two support rods 310 stands up in
accordance with the horizontal rod 311 pushed by the sleeve 302.
The pivot portion 20 of the running platform 2 pivotally connected
to one end of the support rod 310 is lifted accordingly and
restricted within an arc path swung by the swing arm 4 to achieve
the movement. Reversely, if the running platform 2 is downwardly
swung relative to the bottom base, the lifting motor 300 is
controlled to oppositely actuate, and the sleeve 302 is contracted
in accordance with the rotation of the screw 301. Two support rods
310 swing back toward the horizontal direction in accordance with
the horizontal rod 311 that is pulled back by the sleeve 302. The
pivot portion 20 of the running platform 2 pivotally connected to
one end of the support rod 310 is descended to restore the
horizontal state shown in FIG. 3.
[0032] The invention has advantages as the following: [0033] 1.
With the two swing arms 4 and the two support rods 310 connected
between the base 1 and the running platform 2, the running platform
2 is upwardly swung to achieve the lifting when the actuation
device 30 is activated. At this time, the running platform 2
backwardly shifts at the horizontal direction. By comparing with
the conventional foldable treadmill that forwardly moves due to the
running platform that is lifted, the invention does not reduce the
space for the stroke of the running platform 2 and further
increases the space for the stroke of the running platform 2 due to
the running platform 2 that is backwardly shifted. Accordingly,
with respect to the same stroke space, the running platform 2 of
the invention can be reduced with the length at structure design to
reduce the components, thereby lowering costs. [0034] 2. The motion
of lifting the running platform 2 relative to the base 1 is caused
by externally pushing the sleeve 302 of the actuation device 30
stretched relative to the screw 301. For the pushing force, which
is larger than the pulling force, generated by the lift motor 300
with respect to the sleeve, the lifting mechanism 3 of the
invention can provide the greater support force to the running
platform 2 by comparing with the conventional lifting mechanism so
that the running platform 2 of the invention on the base 1 has
excellent positioning and support effects to steady the running
platform 2 on the base 1.
[0035] The invention improves over the prior art and complies with
patent application requirements, and thus is duly filed for patent
application. While the invention has been described by device of
specific embodiments, numerous modifications and variations could
be made thereto by those generally skilled in the art without
departing from the scope and spirit of the invention set forth in
the claims.
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