Pulley and structure having the same connected with driven unit
AssigneeCornerstone Technology (Shenzhen) Limited
InventorZerui Wang
Life of this patent
Estimating the term…
Abstract
A pulley and a structure having the pulley connected with a driven unit are provided. The pulley includes a wheel portion and a lug portion. The wheel portion includes two circular end surfaces opposing each other and a side surface connecting the two end surfaces. The side surface includes a main arc face and a branch arc face. The branch arc face has a head end connected to the main arc face and a tail end configured to connect a strap. The branch arc face has a width in an axial direction of the wheel portion smaller than a width of the main arc face. The lug portion is fixed to the wheel portion, disposed at a position adjacent to the branch arc face along the width of the main arc face and extends to protrude beyond the branch arc face in a radial direction of the wheel portion.
Claims20
A pulley comprising:
- a wheel portion including two circular end surfaces opposing each other and a side surface connecting the two end surfaces, wherein the side surface includes a main arc face and a branch arc face, the branch arc face has a head end connected to the main arc face and a tail end configured to connect a strap, the branch arc face has a width in an axial direction of the wheel portion smaller than a width of the main arc face, and the branch arc face and the main arc face form a continuous circular arc surface on which the strap rides;
- and
- a lug portion fixed to the wheel portion, wherein the lug portion protrudes from the side surface in a radial direction of the wheel portion and is aligned with the branch arc face in a circumferential direction of the wheel portion, and the lug portion is configured to connect the pulley to a driven unit.
A structure comprising a driven unit and a pulley, wherein the pulley includes:
- a wheel portion including two circular end surfaces opposing each other and a side surface connecting the two end surfaces, wherein the side surface includes a main arc face and a branch arc face, the branch arc face has a head end connected to the main arc face and a tail end configured to connect a strap, the branch arc face has a width in an axial direction of the wheel portion smaller than a width of the main arc face, and the branch arc face and the main arc face form a continuous circular arc surface on which the strap rides;
- and
- a lug portion fixed to the wheel portion, wherein the lug portion protrudes from the side surface in a radial direction of the wheel portion and is aligned with the branch arc face in a circumferential direction of the wheel portion, and the lug portion connects the pulley to the driven unit.
A strap drive train comprising:
- a pulley including:
- a wheel portion including two circular end surfaces opposing each other and a side surface connecting the two end surfaces, wherein the side surface includes a main arc face and a branch arc face, the branch arc face has a head end connected to the main arc face and a tail end configured to connect a strap, the branch arc face has a width in an axial direction of the wheel portion smaller than a width of the main arc face, and the branch arc face and the main arc face form a continuous circular arc surface on which the strap rides, and
- a lug portion fixed to the wheel portion, wherein the lug portion protrudes from the side surface in a radial direction of the wheel portion and is aligned with the branch arc face in a circumferential direction of the wheel portion, and the lug portion is configured to connect the pulley to a driven unit;
- and
- at least one strap connected to the pulley and riding on the side surface.
Dependencies are inferred from the claim text.