Integrated folding mechanism of a treadmill

• US 7,749,138 B2
• Filed: 10/31/2007
• Issued: 07/06/2010
• Est. Priority Date: 10/31/2007
• Status: Expired due to Fees

• Current Assignee: Leao Wang
• Original Assignee: Leao Wang
• Inventors: Wang, Leao
• Primary Examiner(s): Thanh; Loan H
• Assistant Examiner(s): Ginsberg; Oren
• Application Number:
  US11/980,053
• Publication Number:
  US 20090111665A1
• Time in Patent Office: 979 Days
• Field of Search: 482/51, 482/54, 119/700
• US Class Current: 482/54
• CPC Class Codes: A63B 2071/025 on rollers or wheels
• CPC Class Codes: A63B 22/02 with movable endless bands , e.g. treadmills other training appliances for running on the spot A63B69/0028
• CPC Class Codes: A63B 2210/50 Size reducing arrangements for stowing or transport

Abstract

An integrated folding mechanism of a treadmill having a slide pusher supported by a pneumatic cylinder at the bottom of a platform frame thereof. In this way, the rear support may be pushed upward to bring the platform frame in a vertical stable folding position or in a flat ground-touching position when the platform frame is moved upward and downward. Meanwhile, the rear support is provided with a push rod opposing to the handrail assembly. The push rod is adapted to push a coupling cross shaft having a rotation disc at both sides thereof, respectively. In this way, the handrail assembly fixed coaxially to the rotation discs can be synchronically moved in a flat position or in an upright position.

Claims

1. An integrated folding mechanism of a treadmill having a platform frame with a transmission motor at one side thereof for driving a continuous moving belt into rotation by use of a transmission belt, a front roller, and a rear roller, a lifting motor being employed to move an adjusting support upward and downward for adjusting the supporting angle of the platform frame, two connection pins being disposed at both sides of the platform frame, respectively, for pivotally coupling a handrail assembly and a rear support, respectively,

wherein first and second strengthening bars extend across a width of the platform frame,

wherein a slide rail, on which a slipper moves, extends between the first and second strengthening bars of the platform frame;

wherein a slide pusher is attached to the slipper while the other end of the slide pusher is pivotally coupled to the rear support;

wherein a pneumatic cylinder is pivotally connected with a third strengthening bar of the platform frame while the other end of the pneumatic cylinder directly pushes the slide pusher; and

wherein a push rod is provided on the rear support opposing to the handrail assembly while the push rod is adapted to push a coupling cross shaft having a rotation disc at both sides thereof, respectively, in this way, the handrail assembly fixed coaxially to the rotation discs can be synchronically moved in a flat position or in an upright position,

wherein the slide rail extends both above and substantially parallel to the rear support, when the treadmill is in an unfolded state.