Cushion adjustable and display devices for treadmills

Abstract

A cushion adjustable device for a treadmill includes a base plate fixed on a horizontal portion of one of two sides of a frame of the treadmill and a movable member is slidably engaged with a groove defined in the base plate. The movable member includes a resilient roller which is in contact with an underside of the deck of the treadmill. By moving the adjustable device, the resilient roller is moved to a desired position relative to the deck so as to provide a better cushion feature of the deck. A cushion display device includes an indication member and an extension rod which is fixed to the underside of the deck so that when the deck is deformed in vertical direction, the indication member is moved in vertical direction to show the deformation of the deck in the vertical direction.

1 . A treadmill comprising:
 a frame having two sides and a motor connected between the two sides, two rollers connected between the two sides of the frame and driven by the motor, two posts extending from the two sides of the frame and connected with a handle, each of the two sides of the frame having a vertical portion and a horizontal portion which extends from an inner side of the vertical portion, a plurality of resilient members fixed on each of the two horizontal portions, a deck supported on the resilient members and fixed to the horizontal portions, a loop-like endless belt driven by the two rollers and the deck located between a top portion and a bottom portion of the loop-like endless belt;   a cushion display device having an indication member which is fixed to an underside of the deck and the indication member movably pointing marks seen on an outside of one of the vertical portions when the deck is deformed in vertical direction, and   a cushion adjustable device located on one of the horizontal portions and beneath the deck, the cushion adjustable device having a base plate fixed on the horizontal portion and a movable member movably engaged with a groove defined in the base plate, a resilient roller connected to the movable member which is operated from an outside of the frame.   
   
   
       2 . The treadmill as claimed in  claim 1 , wherein the cushion adjustable device is located on a mediate portion of the horizontal portion. 
   
   
       3 . The treadmill as claimed in  claim 1 , wherein the base plate includes two sidewalls and the groove is defined between the two sidewalls, two elongate wedge-shaped engaging recesses are defined in the two sidewalls respectively, the movable member has two wedge-shaped sides which are slidably engaged with the two elongate wedge-shaped engaging recesses. 
   
   
       4 . The treadmill as claimed in  claim 1 , wherein the movable member has a toothed surface defined in a top thereof and two lugs extend from the two sidewalls of the base plate respectively, a rod extends through two respective holes in the two lugs, a gear located between the two lugs, a through hole the vertical portion and is connected to a knob, the gear is engaged with the toothed surface so that the movable member is moved relative to the deck by rotating the knob. 
   
   
       5 . The treadmill as claimed in  claim 4 , wherein the rod has a square end which is securely engaged with a square recess defined in the knob. 
   
   
       6 . The treadmill as claimed in  claim 4 , wherein a ridge extends radially from an outer periphery of the rod and the gear includes a passage through which the rod extends, a slot is defined in an inner periphery of the passage and the ridge on the rod is engaged with the slot. 
   
   
       7 . The treadmill as claimed in  claim 1 , wherein a U-shaped bracket is connected to an end of the movable member and includes two extensions, the resilient roller is located between the two extensions by extending a pin extending through two respective holes in the two extensions and the resilient roller. 
   
   
       8 . The treadmill as claimed in  claim 7 , wherein the pin has an end extending through a first elongate slot defined in the vertical portion, a second elongate slot defined in a cover attached to the vertical portion and is connected with a cap which has a point, a transparent member is attached on the cover and the point is movably located within a rage of the transparent member. 
   
   
       9 . The treadmill as claimed in  claim 1 , wherein a cover is attached to the vertical portion and includes an opening with which a transparent plate is engaged, the marks are marked on the transparent plate, an extension rod perpendicularly extends from a rear side of the indication member and the extension rod movably extends through a vertical slot defined in the vertical portion and is connected to the underside of the deck.