1. Fields of the Invention
The invention relates to an adjustable rowing machine, and more particularly, to a rowing machine having a lifting device and a guide device for adjusting the angle of a supporting frame relative to a base frame.
2. Description of the Related Art
A rowing machine is a fitness device having a mechanism with two oarlike handles (or a movable bar), foot braces, and a sliding seat, allowing the user to go through reciprocating motions of rowing in a racing shell.
oarlike handles or a movable bar and a sliding seat, used to simulate rowing a racing shell.
U.S. Pat. No. 5,916,069 teaches a rowing exerciser with magnetic resistance having a supporting frame on which a seat moves for supporting the operator's body. This configuration allows the operator to stably sit on the seat to take exercise. However, it lacks the possibility for individual adjustment to weight, height and physical condition of each operator. The reciprocating motion of the rowing machine at a single angle can't meet different requirements of operators any more.
It is a primary object of the invention is to provide a rowing machine with a function to adjust the sitting angle of the operator during the exercise session.
It is another object of the invention is to provide a rowing machine with a supporting frame to adjust the angle of the supporting frame for positioning the operator's body in an inclined position.
The accomplishment of this and other objects of the invention will become apparent from the following description and its accompanying drawings of which:
Referring to
When the lifting element 40 is extended to lift the supporting frame 30 in an inclined position, the arched guide device 20 moves along an imaginary full circular track (marked with dashed line) having a circular point (a). To the contrary, when the lifting element 40 is retracted to lower the supporting frame 30, the arched guide device 20 also moved along the imaginary full circular track (marked with dashed line) having a circular point (a). In this way, the operator can easily adjust the supporting frame 30 to a desired angle for taking a comfortable exercise session.
As shown in
The main frame 10 is connected to a first end of the arched guide device 20 while a second end thereof and the supporting frame 30 are integrally joined. The arched guide device 20 is clamped by the rolling elements 50 of the upright support 52 of the base frame 51. Moreover, the lifting element 40 is pivotably interposed between the base frame 51 and the supporting frame 30.
Furthermore, the supporting frame 30 includes rails 31 for a seat 32 to perform a reciprocating movement thereon. Meanwhile, the supporting frame 30 is supported by the lifting element 40 and maintained at a certain angle or in a horizontal position. The lifting device 40 can includes an electric motor 41 that drives a socket 43 screwed on a spindle 42 to undergo a reciprocating motion in axial direction.
When the socket 43 on the spindle 42 is extended by the electric motor 41 to lift the supporting frame 30, the arched guide device 20 clamped by the rolling element 50 is movable with the supporting frame 30 along an imaginary circular track until the lifting element 40 is stopped. At that time, the supporting frame 30 is positioned at a certain angle to allow the operator to take exercise sessions.
To the contrary, when the socket 43 on the spindle 42 is retracted by the electric motor 41 to lower the supporting frame 30, the arched guide device 20 clamped by the rolling element 50 is movable with the supporting frame 30 along an imaginary circular track until the lifting element 40 is stopped. So, the supporting frame 30 is positioned at a certain angle or returns to its original position for next operators to undergo the angle-adjusting action.
Referring to
Moreover, the supporting frame 30 includes rails 31 for a seat 32 to perform a reciprocating movement. In addition, the supporting frame 30 is integrally connected with the arched guide device 20. The arched guide device 20 is clamped by the rolling element 50 of the upright support 52 of the base frame 51. Moreover, the lifting element 40 is pivotably interposed between the base frame 51 and the supporting frame 30. Meanwhile, the supporting frame 30 is supported by the lifting element 40 and maintained at a certain angle or in a horizontal position. The lifting device 40 may include an electric motor 41 that drives a socket 43 screwed on a spindle 42 to undergo a reciprocating motion in axial direction.
In use, the electric motor 41 is activated to drive the socket 43 on the spindle 42 to extend over a certain length, thereby lifting the supporting frame 30 in an inclined position. Meanwhile, the arched guide device 20 clamped by the rolling element 50 is movable with the supporting frame 30 along an imaginary circular track until the lifting element 40 is stopped. At that time, the supporting frame 30 is positioned at a certain angle to allow the operator to take exercise sessions.
To the contrary, when the socket 43 on the spindle 42 is retracted by the electric motor 41 to lower the supporting frame 30, the arched guide device 20 clamped by the rolling element 50 is movable with the supporting frame 30 along an imaginary circular track until the lifting element 40 is stopped. So, the supporting frame 30 is positioned at a certain angle or returns to its original position for next operators to undergo the angle-adjusting action.
Based on the aforementioned configuration, when the supporting frame 30 is lifted in such an inclined position that the operator sitting on the seat 32 can overlook the ground. To the contrary, the supporting frame 30 can be pulled back by the lifting device 50 in such an inclined position that the operator sitting on the seat 32 can look up to the sky.
Many changes and modifications in the above-described embodiments of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.
Number | Name | Date | Kind |
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5527249 | Harris | Jun 1996 | A |
5547444 | Huang | Aug 1996 | A |
5645514 | Chen | Jul 1997 | A |
5707322 | Dreissigacker et al. | Jan 1998 | A |
6394938 | Tornabene | May 2002 | B1 |
6428450 | Ho et al. | Aug 2002 | B1 |
6482133 | Miehlich | Nov 2002 | B1 |
Number | Date | Country | |
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20060009335 A1 | Jan 2006 | US |