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Publication numberUS20070238580 A1
Publication typeApplication
Application numberUS 11/391,383
Publication dateOct 11, 2007
Filing dateMar 29, 2006
Priority dateMar 29, 2006
Publication number11391383, 391383, US 2007/0238580 A1, US 2007/238580 A1, US 20070238580 A1, US 20070238580A1, US 2007238580 A1, US 2007238580A1, US-A1-20070238580, US-A1-2007238580, US2007/0238580A1, US2007/238580A1, US20070238580 A1, US20070238580A1, US2007238580 A1, US2007238580A1
InventorsLeao Wang
Original AssigneeLeao Wang
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pace-adjusting mechanism of an elliptical cross trainer
US 20070238580 A1
Abstract
A pace-adjusting mechanism of an elliptical cross trainer having a U-shaped coupling rod pivotally and laterally disposed on a bottom support frame. An electric adjusting mechanism is interposed between the U-shaped coupling rod and the frame unit. The electric adjusting mechanism includes a motor, a guide spindle sleeve and a telescopic spindle. When the telescopic spindle is driven to be moved, it results in the adjustment of the relative angle of the U-shaped coupling rod, and wherein an L-shaped connecting rod is pivotally coupled to each top side of the U-shaped coupling rod while the end of the L-shaped connecting rod is pivotally attached to a treadle plank so that the vertical position of the treadle planks is adjustable by changing the angle of the U-shaped coupling rod and, therefore, the adjustment of the exercise pace is achieved.
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Claims(2)
1. A pace-adjusting mechanism of an elliptical cross trainer, comprising a U-shaped coupling rod pivotally and laterally disposed on a bottom support frame, an electric adjusting mechanism being interposed between the U-shaped coupling rod and the frame unit, the electric adjusting mechanism having a motor, a guide spindle sleeve and a telescopic spindle,
wherein, when the telescopic spindle is driven to be moved, it results in the adjustment of the relative angle of the U-shaped coupling rod, and wherein an L-shaped connecting rod is pivotally coupled to each top side of the U-shaped coupling rod while the end of the L-shaped connecting rod is pivotally attached to a treadle plank so that the vertical position of the treadle planks is adjustable by changing the angle of the U-shaped coupling rod and, therefore, the adjustment of the exercise pace is achieved.
2. The pace-adjusting mechanism of an elliptical cross trainer as claimed in claim 1 wherein a telescopic support element is interposed between the treadle plank and the U-shaped coupling rod.
Description
    BACKGROUND OF THE INVENTION
  • [0001]
    1. Fields of the Invention
  • [0002]
    The invention relates to a pace-adjusting mechanism of an elliptical cross trainer, and more particularly, to a mechanism that can rapidly adjust the movement pace at will.
  • [0003]
    2. Description of the Related Art
  • [0004]
    The elliptical cross trainer is so used that the operator's feet can make an elliptical movement path, thereby simulating the real running and walking path. Moreover, the horizontal pace (simulating the movement on a flat ground) and the inclined pace (simulating the uphill and downhill movement) can be changed when the vertical position of the treadles of the elliptical cross trainer changes. This is the main intention of the invention.
  • [0005]
    U.S. Pat. No. 6,090,013 discloses such a mechanism that employs a plurality of selection holes in treadle planks. By selecting a desired hole in the treadle plank for connection, the coupling angle of the treadle plank can be changed to achieve the above-mentioned pace-adjusting effect.
  • [0006]
    In fact, the manual adjustment of the aforementioned prior art is not a practical solution. This is because the operator has to stop the exercise for adjustment of the movement pace, thereby reducing the desire of using the elliptical cross trainer. Meanwhile, this adjustment way must affect the exercise rhythm. Thus, it is hardly possible to use the pace-adjusting mechanism during the exercise sessions so that this kind of the pace-adjusting mechanism is not so practical and valuable as expected.
  • SUMMARY OF THE INVENTION
  • [0007]
    It is a primary object of the invention is to provide a pace-adjusting mechanism of an elliptical cross trainer that employs an electric adjusting mechanism instead of a manual adjusting mechanism. In this way, the operator can easily perform a desired adjustment during the exercise session without stopping the exercise and affecting the movement rhythm. Accordingly, the pace-adjusting mechanism of an elliptical cross trainer can be easily and practically used.
  • [0008]
    In order to achieve the above-mentioned object, an electric adjusting mechanism is employed to ensure a change of the supporting angle of a U-frame relative to a frame unit pivotally coupled thereto. Meanwhile, connecting rods are pivotally connected to treadle planks, respectively, thereby adjusting the position of the treadles and changing the movement pace.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0009]
    The accomplishment of this and other objects of the invention will become apparent from the following description and its accompanying drawings of which:
  • [0010]
    FIG. 1 is a perspective view of a preferred embodiment of the invention;
  • [0011]
    FIG. 2 is a side view of the embodiment according to FIG. 1;
  • [0012]
    FIG. 3 is a schematic drawing of the adjustment of the invention;
  • [0013]
    FIG. 4 is a perspective view of another preferred embodiment of the invention; and
  • [0014]
    FIG. 5 is a perspective view of a further preferred embodiment of the invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • [0015]
    Referring to FIGS. 1 through 3, a preferred embodiment of the invention includes a frame unit 10 and an electric adjusting mechanism 30.
  • [0016]
    The frame unit 10 of the elliptical cross trainer has a bottom support frame 18 at the front end thereof and a flywheel transmission unit at the rear end thereof. The flywheel transmission unit is covered by a protection hood 11 so that it is hidden in the figures. The flywheel transmission unit works in cooperation with two treadle planks 12 on which a treadle 21 is disposed for taking a treading exercise. Two movable handle rods 15 are interposed between two upright posts and pivotally mounted on a first crossbar 14. The bottom of the movable handle rods 15 is pivotally attached to a connecting rod 16. The other end of the connecting rod 16 is pivotally connected to the front section of the treadle plank 12, thereby creating a coupling action. Moreover, the top of the frame unit 10 is provided with a fixed handle rod 17.
  • [0017]
    The electric adjusting mechanism 30 is installed at the bottom of a front side of the frame unit 10. The electric adjusting mechanism 30 includes a motor 31, a guide spindle sleeve 32, and a telescopic spindle 33. A U-shaped coupling rod 19 is pivotally and laterally disposed on the bottom support frame 18. The electric adjusting mechanism 30 is interposed between the U-shaped coupling rod 19 and the frame unit 10.
  • [0018]
    As shown in FIGS. 2 and 3, when the guide spindle sleeve 32 is driven by the motor 31 to create a reciprocating in-place displacement of the telescopic spindle 33, it results in the adjustment of the relative angle of the U-shaped coupling rod 19. Besides, an L-shaped connecting rod 20 is pivotally coupled to each top side of the U-shaped coupling rod 19. The other end of the L-shaped connecting rod 20 is pivotally attached to the treadle plank 12. Therefore, the vertical position of the treadle planks 12 is adjustable by changing the angle of the U-shaped coupling rod 19. In this way, the adjustment of the exercise pace is achieved.
  • [0019]
    As shown in FIG. 4, the electric adjusting mechanism 30 can be alternatively installed at the middle section of the frame unit 10. In this way, a direct connection to the top of the U-shaped coupling rod 19 is ensured to achieve the same effect. Moreover, as shown in FIG. 5, an assembly allowance (or assembly gap) is existing when a pivoting element or a sliding element is installed. Therefore, the vibration is created between the pivoting and the sliding elements. In order to efficiently avoid the vibration, a telescopic support element 21 is interposed between the treadle plank 13 and the U-shaped coupling rod 19 for constantly support the U-shaped coupling rod 19 in place and protecting from vibration. The telescopic support element 21 can be a spring hydraulic cylinder, a pneumatic cylinder, or the like.
  • [0020]
    Many changes and modifications in the above-described embodiment 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 claim.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US5690589 *Mar 14, 1996Nov 25, 1997Rodgers, Jr.; Robert E.Stationary exercise apparatus
US6361476 *Apr 17, 2000Mar 26, 2002Paul William EschenbachVariable stride elliptical exercise apparatus
US20040043871 *Apr 14, 2003Mar 4, 2004Huang-Tung ChangTreading exercising machine with adjustable elliptical track for tilting at two sides
US20060281604 *Jun 8, 2005Dec 14, 2006Precor IncorporatedCross training exercise device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7670267 *Aug 24, 2007Mar 2, 2010Leao WangPace-adjusting mechanism of an elliptical cross trainer
US7740564 *Jun 16, 2008Jun 22, 2010Johnson Health Tech Co., Ltd.Stationary exercise apparatus
US7833133 *Dec 28, 2006Nov 16, 2010Precor IncorporatedEnd of travel stop for an exercise device
US7985165 *May 12, 2010Jul 26, 2011Strength Master Fitness Tech. Co., Ltd.Elliptical exercise machine
US8062188 *Mar 23, 2011Nov 22, 2011Strength Master Fitness Tech Co., Ltd.Elliptical exercise machine
US8808148 *Apr 14, 2011Aug 19, 2014Icon Ip, Inc.Elliptical exercise machine with declining adjustable ramp
US9067094 *Mar 13, 2013Jun 30, 2015Johnson Health Tech Co., Ltd.Exercise apparatus
US9550089 *Apr 29, 2015Jan 24, 2017Dyaco International Inc.Exercise machine with power supplier
US20080161163 *Dec 28, 2006Jul 3, 2008Precor IncorporatedSupplemental resistance assembly for resisting motion of an exercise device
US20080161164 *Dec 28, 2006Jul 3, 2008Precor IncorporatedEnd of travel stop for an exercise device
US20090048073 *Aug 17, 2007Feb 19, 2009Roimicher Marcos DHandlebar mechanism
US20090054212 *Aug 24, 2007Feb 26, 2009Leao WangPace-adjusting mechanism of an elliptical cross trainer
US20090124463 *Nov 8, 2007May 14, 2009Michael LinExerciser having adjustable moving stroke
US20090312157 *Jun 16, 2008Dec 17, 2009Johnson Health Tech. Co., Ltd.Stationary exercise apparatus
US20120190508 *Apr 14, 2011Jul 26, 2012Icon Ip, Inc.Elliptical exercise machine with declining adjustable ramp
US20140274573 *Mar 13, 2013Sep 18, 2014Johnson Health Tech Co., Ltd.Exercise Apparatus
US20160375300 *Jun 26, 2015Dec 29, 2016Johnson Health Tech Co., Ltd.Exercise Apparatus
EP2995355A1 *Oct 7, 2014Mar 16, 2016Dyaco International Inc.Exercise device providing adjustable pace length
Classifications
U.S. Classification482/52
International ClassificationA63B22/04
Cooperative ClassificationA63B2022/0623, A63B21/225, A63B22/001, A63B22/0664, A63B22/0015, A63B2022/067
European ClassificationA63B22/00A6, A63B22/06E, A63B22/00B