Foldable support frame for treadmill

Abstract

A foldable support frame for a treadmill includes a bottom bracket, two pivot seats mounted on the bottom bracket, two limit protrusions mounted on the bottom bracket, and two support arms mounted on the bottom bracket and each having a lower end which is pivotally mounted on a respective one of the pivot seats and is detachably mounted on a respective one of the limit protrusions. Thus, each of the support arms is pivotable relative to the respective pivot seat to be parallel with the bottom bracket, and the lower end of each of the two support arms is movable to detach from the respective limit protrusion to facilitate a user mounting electric wires from the lower end of each of the support arms.

1 . A foldable support frame for a treadmill, comprising:
 a bottom bracket;   two opposite pivot seats mounted on the bottom bracket;   two opposite limit protrusions mounted on the bottom bracket and each spaced from a respective one of the two pivot seats;   two opposite support arms mounted on the bottom bracket and each having a lower end which is pivotally mounted on a respective one of the two pivot seats and is detachably mounted on a respective one of the two limit protrusions.   
   
   
       2 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein the lower end of each of the two support arms is pivotally mounted on the respective pivot seat by a pivot unit. 
   
   
       3 . The foldable support frame for a treadmill in accordance with  claim 2 , wherein
 each of the two pivot seats has a top provided with two protruding pivot ears;   the lower end of each of the two support arms has a rear side provided with a pivot portion which is pivotally mounted between the two pivot ears of the respective pivot seat by the pivot unit.   
   
   
       4 . The foldable support frame for a treadmill in accordance with  claim 3 , wherein the pivot portion of each of the two support arms is a shaft tube. 
   
   
       5 . The foldable support frame for a treadmill in accordance with  claim 3 , wherein
 each of the two pivot ears of each of the two pivot seats has a pivot hole;   the pivot unit includes:   a fastening bolt having a first portion abutting one of the two pivot ears of the respective pivot seat and a second portion extending through the pivot hole of each of the two pivot ears of the respective pivot seat and the pivot portion of the respective support arm;   a fastening nut screwed onto the second portion of the fastening bolt and abutting the other one of the two pivot ears of the respective pivot seat.   
   
   
       6 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein each of the two limit protrusions is a substantially arcuate bent plate. 
   
   
       7 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein each of the two limit protrusions has a substantially U-shaped cross-sectional profile. 
   
   
       8 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein each of the two limit protrusions has a height that is changed and reduced gradually toward the respective pivot seat. 
   
   
       9 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein a gap is defined between each of the two limit protrusions and the respective pivot seat to receive the lower end of a respective one of the two support arms. 
   
   
       10 . The foldable support frame for a treadmill in accordance with  claim 1 , further comprising:
 two locking brackets each mounted on the lower end of a respective one of the two support arms and each detachably secured on the bottom bracket.   
   
   
       11 . The foldable support frame for a treadmill in accordance with  claim 10 , wherein each of the two locking brackets has a substantially L-shaped profile. 
   
   
       12 . The foldable support frame for a treadmill in accordance with  claim 10 , wherein each of the two locking brackets is mounted on a front side of the lower end of the respective support arm to move with the respective support arm. 
   
   
       13 . The foldable support frame for a treadmill in accordance with  claim 12 , wherein each of the two locking brackets has a bottom that is movable to abut the bottom bracket when the lower end of the respective support arm is mounted on the respective limit protrusion. 
   
   
       14 . The foldable support frame for a treadmill in accordance with  claim 13 , wherein
 the bottom bracket has a top face provided with two opposite screw bores;   the bottom of each of the two locking brackets is provided with a fixing hole;   the foldable support frame further comprises two locking screws each extending through fixing hole of a respective one of the two locking brackets and each screwed into a respective one of the two screw bores of the bottom bracket to fix the respective locking bracket to the bottom bracket.   
   
   
       15 . The foldable support frame for a treadmill in accordance with  claim 14 , wherein each of the two support arms and the respective locking bracket are secured on the bottom bracket by the respective locking screw. 
   
   
       16 . The foldable support frame for a treadmill in accordance with  claim 9 , wherein each of the two support arms is pivotable relative to the respective pivot seat from a first position where each of the two support arms is disposed at an upright state relative to the respective pivot seat to a second position where each of the two support arms is parallel with the bottom bracket, and the lower end of each of the two support arms is movable to detach from the respective limit protrusion and align with the respective gap of the bottom bracket. 
   
   
       17 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein each of the two support arms is a hollow pipe. 
   
   
       18 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein the bottom bracket has a substantially U-shaped profile. 
   
   
       19 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein
 the bottom bracket is mounted on a front end of a platform;   the two pivot seats are located at two opposite sides of the platform.   
   
   
       20 . The foldable support frame for a treadmill in accordance with  claim 1 , wherein each of the two pivot seats has a substantially triangular profile.