Manually adjustable lifting mechanism and treadmill
View Patent ↗A lifting mechanism includes a frame and two first supporting structures disposed at the first end of the frame and two second supporting structures disposed at a second end of the frame. The second supporting structure includes a second leg, a positioning plate and a support rod, a side of the positioning plate defines a slide groove, and one side of the slide groove in its longitudinal direction defines a positioning notch. The support rod is rotatably connected to the second leg, and the support rod is provided with a positioning block, which may slide in the slide groove. A treadmill includes the above lifting mechanism and a running belt.
1 . A manually adjustable lifting mechanism comprising:
a frame having a first end and a second end opposite to each other in a longitudinal direction of the frame;
two first supporting structures disposed at the first end of the frame, each of the two first supporting structures disposed on the frame along the longitudinal direction of the frame, each of the two first supporting structures comprising a first leg having a first end rotatably connected to the frame, and the first leg selectively rotated between a supporting state and a folding state; and
two second supporting structures disposed at the second end of the frame, each of the two second supporting structures disposed on the frame along the longitudinal direction of the frame, each of the two second supporting structures comprising:
a second leg, a first end of the second leg being rotatably connected to the frame;
a positioning plate secured to the frame, and a side of the positioning plate being parallel to a rotation surface of the second leg; the side of the positioning plate defining a slide groove, and at least one side of the slide groove along a longitudinal direction of the slide groove defining at least one positioning notch; and
a support rod, a first end of the support rod being rotatably connected to the first end of the second leg, a second end of the support rod being provided with a positioning block, and the positioning block configured to slide in the slide groove;
wherein the second leg is configured to selectively rotate toward a support surface and drive the positioning block to slide in the slide groove, and the positioning block is configured to selectively slide into the at least one positioning notch to lock the second leg; and
wherein each of the two second support structures further comprise a spring, one end of the spring is connected to the frame and another end of the spring is connected to the second leg, and the spring is configured to provide a driving force for the second leg to rotate to the folded state.
2 . The lifting mechanism according to claim 1 , wherein each of the two first support structures further comprise a support seat, the support seat is secured to the frame, the first end of the first leg is rotatably connected to the support seat, and the first leg is configured to be selectively rotated toward the support surface.
3 . The lifting mechanism according to claim 2 , wherein each of the two first support structures is disposed on a side of the frame facing the support surface;
a first side surface of the first leg of each of the two first supporting structures abuts against the frame in response to the first leg of each of the two first supporting structures being in the supporting state; and
a third side surface of the first leg of each of the two first supporting structures abuts against the frame in response to the first leg of each of the two first supporting structures being in the folded state.
4 . The lifting mechanism according to claim 3 , wherein the support seat of each of the two first supporting structures comprises a seat bottom and a hinge, the seat bottom is secured to the frame, the hinge is secured to the seat bottom, and the first leg of each of the two first supporting structures is rotatably connected to the hinge;
the first side surface of the first leg of each of the two first supporting structures defines a first groove, and the first groove receives at least a portion of the seat bottom in response to the first leg of each of the two first supporting structures being in the supporting state; and
a second side surface of the first leg of each of the two first supporting structures defines a second groove, and the second groove receives at least a portion of the seat bottom in response to the first leg of each of the two first supporting structures being in the folded state.
5 . The lifting mechanism according to claim 1 , wherein the slide groove of each of the two second supporting structures has a first end away from the second leg of the corresponding one of the two second supporting structures and a second end proximal to the second leg of the corresponding one of the two second supporting structures, and the first end of the slide groove of each of the two second supporting structures defines the at least one positioning notch.
6 . The lifting mechanism according to claim 1 , wherein the longitudinal direction of the slide groove of each of the two second supporting structures is parallel to the longitudinal direction of the frame, and the at least one positioning notch of each of the two second supporting structures is disposed on the at least one side of the slide groove of each of the two second supporting structures facing the frame; or/and
an extension direction of the at least one positioning notch of each of the two second supporting structures forms an acute angle with respect to the longitudinal direction of the slide groove of each of the two second supporting structures.
7 . The lifting mechanism according to claim 1 , wherein a connecting rod is provided between the two second support structures, a first end of the connecting rod is connected to the support rod of one of the two second support structures, a second end of the connecting rod is connected to the support rod of another of the two second support structures, and the two second support structures are kept synchronized by the connecting rod; or/and
a second end of the second leg of each of the two second supporting structures is provided with a rotatable wheel.
8 . The lifting mechanism according to claim 1 , wherein the frame comprises at least two borders each disposed on one side of the frame along the longitudinal direction of the frame; each of the two first support structures and each of the two second support structures are mounted on one of the two borders; or/and
an engagement between the two first support structures and the two second support structures are selectively adjusted to a positive slope, a negative slope or a horizontal state.
9 . The lifting mechanism according to claim 1 , wherein a side of the first leg of each of the two first supporting structures defines a clamping groove.
10 . A manually adjustable lifting mechanism, comprising:
a frame having a first end and a second end opposite to each other; and
two first supporting structures disposed at the first end of the frame, each of the two first supporting structures comprising a support seat and a first leg, the support seat of each of the two first supporting structures being secured to the frame, the first leg of each of the two first supporting structures having a first end rotatably connected to the support seat of a corresponding one of the two first supporting structures;
wherein the first leg of each of the two first supporting structures is configured to rotate between a supporting state and a folding state;
a first side surface of the first leg of each of the two first supporting structures abuts against the frame in response to the first leg of each of the two first supporting structures being in the supporting state; and
a third side surface of the first leg of each of the two first supporting structures abuts against the frame in response to the first leg of each of the two first supporting structures being in the folded state;
wherein the manually adjustable lifting mechanism further comprises:
two second supporting structures disposed at the second end of the frame, each of the two second supporting structures comprising:
a second leg having a first end rotatably connected to the frame;
a positioning plate secured to the frame and defining at least one positioning notch; and
a support rod, a first end of the support rod being rotatably connected to the first end of the second leg of a corresponding one of the two second supporting structures, a second end of the support rod being provided with a positioning block;
wherein the second leg of each of the two second supporting structures is configured to rotate toward a support surface, and the positioning block is configured to engage with the at least one positioning notch to lock the second leg.