FOLDABLE TREADMILL HAVING LIFTING MECHANISM
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.
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1. Field of the Invention
The present invention relates to a foldable treadmill, and more particularly to a foldable treadmill having lifting mechanism.
2. Description of the Related Art
As shown in
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
However, the conventional foldable treadmill has the following problems.
- 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. - 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.
Therefore, improving the problem of the conventional foldable treadmill becomes an important issue.
SUMMARY OF THE INVENTIONIn 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.
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.
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.
The support surface is a rail, and the rail is parallel the member.
A support component is disposed between the running platform and the base to support the running platform that is folded.
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.
The actuation device comprises a lift motor, a screw and a sleeve, one end of the sleeve is pivotally connected to the link.
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.
With reference to
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
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The invention has advantages as the following:
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- 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.
- 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.
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.
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.
Type: Application
Filed: Apr 6, 2012
Publication Date: Oct 10, 2013
Applicant: STRENGTH MASTER FITNESS TECH CO., LTD. (TAICHUNG CITY)
Inventor: GUO-DUAN HER (TAICHUNG CITY)
Application Number: 13/441,065
International Classification: A63B 22/02 (20060101);