Lifting structure for treadmill
Disclosed is a lifting structure for a treadmill, including a first unit mounted at a bottom of a treadmill frame and a second unit rotatably connected to the first unit. The first unit includes first walls and second walls, and the second unit includes a third wall and fourth walls, the third wall abutting against the first walls when the second unit is in a folded state, and the fourth walls abutting against the second walls when the second unit is in an unfolded state.
1 . A lifting structure for a treadmill, comprising:
a first unit mounted at a bottom of a treadmill frame; and
a second unit rotatably connected to the first unit,
wherein the first unit comprises first walls and second walls, and the second unit comprises a third wall and fourth walls, the third wall abutting against the first walls when the second unit is in a folded state, and the fourth walls abutting against the second walls when the second unit is in an unfolded state, and
wherein the first unit further comprises an accommodating groove, and the second unit further comprises a first portion fitting to the accommodating groove, the first portion being rotatably connected to the first unit.
2 . The lifting structure for a treadmill according to claim 1 , wherein the first unit further comprises a first side edge having an L-shape, a second side edge having an L-shape, and a third side edge integrally connecting the first side edge and the second side edge.
3 . The lifting structure for a treadmill according to claim 2 , wherein the first side edge, the second side edge and the third side edge are integrally formed.
4 . The lifting structure for a treadmill according to claim 3 , wherein the second unit further comprises a second portion, the first portion having a smaller diameter and the second portion having a larger diameter, and the accommodating groove exists between the first side edge and the second side edge for accommodating the first portion.
5 . The lifting structure for a treadmill according to claim 2 , wherein the second unit further comprises a second portion, the first portion having a smaller diameter and the second portion having a larger diameter, and the accommodating groove exists between the first side edge and the second side edge for accommodating the first portion.
6 . The lifting structure for a treadmill according to claim 1 , wherein a first hole is disposed on the first portion, second holes corresponding to the first hole are disposed at a lower end of the first unit, and the first portion and the lower end of the first unit form a rotating fit through a pin roll penetrating through and arranged in the first hole and the second holes.
7 . The lifting structure for a treadmill according to claim 6 , wherein a roll sleeve is assembled in the first hole, and the pin roll is a bolt, one end of the pin roll penetrating through the first portion and the lower end of the first unit, and being threadedly connected to a nut.
8 . The lifting structure for a treadmill according to claim 1 , wherein the first walls, the second walls, the third wall, and the fourth walls are flat walls.
9 . The lifting structure for a treadmill according to claim 1 , wherein a lower end of the first unit has rounded corners; and
the second walls, the fourth walls and a bottom surface of the second unit are inclined surfaces.
10 . The lifting structure for a treadmill according to claim 1 , wherein the first unit further comprises an extension wall extending to a lower end of the first unit for limiting the second unit in the unfolded state.