Bearing structure
A bearing structure includes a base unit, a rotating unit, and a first lubricating unit. The base unit includes a base, a surrounding wall extending downward from the top of the base, a bottom wall connected to the bottom of the surrounding wall, and an accommodating groove defined by the surrounding wall and the bottom wall. The rotating unit includes a rotating shaft arranged in the accommodating groove, and the first lubricating unit includes a rotating shaft arranged in the accommodating groove. The first lubricating unit includes a first bearing arranged in the accommodating groove and connected to the bottom wall. The bottom end of the rotating shaft presses against the upper surface of the first bearing, and the upper surface of the first bearing presents an upward protruding dome shape.
1 . A bearing structure, comprising:
a base unit, including a base, a surrounding wall coupled to the base, a bottom wall connected to the bottom of the surrounding wall, and a cavity defined by the surrounding wall and the bottom wall;
a rotating unit, including a rotating shaft arranged in the cavity; and
a first lubricating unit, including a first bearing arranged in the cavity and connected with the bottom wall, and a carbon-containing pad arranged on the upper surface of the first bearing, the carbon-containing pad being made of graphite, the bottom end of the rotating shaft pressing against the upper surface of the carbon-containing pad, the upper surface of the first bearing featuring an upward protruding substantially dome-shaped profile;
wherein the thickness of the carbon-containing pad is greater than 0.3 mm, the bottom end of the rotating shaft features a downward protruding dome-shaped profile, the upper surface of the carbon-containing pad exhibits an upward protruding dome-shaped profile, and the lower surface of the carbon-containing pad is designed to mate with the upper surface of the first bearing, allowing the carbon-containing pad to be securely coupled to the first bearing.
2 . The bearing structure as claimed in claim 1 , wherein at least one of the rotating shafts and the first bearing are made of magnetic material, and the rotating shaft magnetically attracts to the first bearing.
3 . The bearing structure as claimed in claim 2 , wherein the rotating shaft is made of a metal or metal alloy that can be magnetically attracted, and the material of the first bearing is a magnet.
4 . The bearing structure as claimed in claim 1 , wherein the shape of the first bearing is either substantially a cylinder or substantially a prism.
5 . The bearing structure as claimed in claim 1 , further comprises a second lubricating unit, the second lubricating unit including a second bearing configured in the cavity and positioned between the rotating shaft and the surrounding wall.