Patent ID: 11885164
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC E  G  H  F | IPC E  F

Claim 1:
2. The coupling device according to claim 1, wherein the first transmission assembly comprises:
a first transmission member comprising a first helical tooth portion; and
a second transmission member comprising a second helical tooth portion meshing with the first helical tooth portion, the second transmission member being rotatable relative to the first transmission member through the first helical tooth portion and the second helical tooth portion, and the first end of the second transmission assembly being hinged to the second transmission member at the first hinge center;
wherein a rotation center of the second transmission member is the rotation center of the first transmission assembly and does not coincide with the first hinge center, the second end of the second transmission assembly is slidably coupled to the first transmission member, and the second transmission assembly converts a rotation action of the second transmission member into the moving action of the second transmission assembly along the second direction.