US 12,326,168 B2
Opening and closing mechanism
Yasuhiro Mitsui, Chiba (JP)
Assigned to MITSUBISHI STEEL MFG. CO., LTD., Tokyo (JP)
Appl. No. 18/249,330
Filed by MITSUBISHI STEEL MFG. CO., LTD., Tokyo (JP)
PCT Filed Dec. 5, 2022, PCT No. PCT/JP2022/044691
§ 371(c)(1), (2) Date Jun. 22, 2023,
PCT Pub. No. WO2023/112737, PCT Pub. Date Jun. 22, 2023.
Claims priority of application No. 2021-203131 (JP), filed on Dec. 15, 2021.
Prior Publication US 2024/0026920 A1, Jan. 25, 2024
Int. Cl. F16C 11/04 (2006.01); B60R 11/02 (2006.01)
CPC F16C 11/04 (2013.01) [B60R 11/0235 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An opening and closing mechanism, comprising:
an opening and closing member including a rotating portion on a rotation axis thereof; and
a cam member disposed to face the rotating portion of the opening and closing member on the rotation axis, the cam member being configured to apply a load to the rotating portion,
wherein one of the cam member or the rotating portion includes
at least one first cam projection provided on a first circumference having the rotation axis as a center thereof, and
at least one second cam projection provided on a second circumference having the rotation axis as a center thereof, with a radius of the second circumference being larger than a radius of the first circumference,
the other member of the cam member and the rotating portion includes
a sliding face configured to alternately slide over either the first cam projection or the second cam projection, with no simultaneous contact between the sliding face and both cam projections, and
the opening and closing mechanism is configured to operate:
in a first angle range in which the first cam projection slides over the sliding face and the second cam projection is completely disengaged from the sliding face, and
in a second angle range in which the second cam projection slides over the sliding face and the first cam projection is completely disengaged from the sliding face.