Automatically opening hinge assembly for portable electronic devices
AssigneesShenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) Limited
InventorsYu Zhang, Shui-Jin Dong
Life of this patent
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Abstract
A hinge assembly includes a cam (13), a follower (14), a first spring (12), a control member (17) and a second spring (16). The cam has a first cam surface (135) and a second cam surface (136). The follower has a third cam surface (141) engaging with the first cam surface. The first spring provides an elastic force causing the cam surface of the cam and the third cam surface of the follower to resist each other. The control member has a fourth cam surface engaging with the second cam surface of the cam. The second spring is positioned between the control member and the follower. The control member is movable to push the cam to rotate to realize the first cam surface of the cam to rotate relative to the third cam surface of the follower.
Claims16
A hinge assembly, comprising:
- A cam having a first cam surface and a second cam surface, the second cam surface integrally formed at an inner side periphery of the first cam surface;
- a follower having a third cam surface engaging with the first cam surface;
- a first spring providing an elastic force causing the first cam surface of the cam and the third cam surface of the follower to resist each other;
- a control member having a fourth cam surface engaging with the second cam surface of the cam;
- and
- a second spring positioned between the control member and the follower, the second spring pushing the control member to be separated from the second cam surface;
- wherein the control member is movable to cause the cam to rotate whereby the first cam surface rotates relative to the third cam surface of the follower.
A hinge assembly of a foldable electronic device comprising a main body and a flip cover, the hinge assembly comprising:
- a cam having a first cam surface and a second cam surface, the second cam surface integrally formed at an inner side periphery of the first cam surface, the cam being configured so as to be fixed relative to one of the main body and the flip cover;
- a follower having a third cam surface engaging with the first cam surface, the follower configured so as to be fixed relative to the other of the main body and the flip cover;
- a first spring providing an elastic force causing the first cam surface of the cam and the third cam surface of the follower to resist each other;
- a control member having a fourth cam surface engaging with the second cam surface of the cam, the control member being movable axially between a first position where the fourth cam surface of the control member is engaged with the second cam surface of the cam in a manner so as to cause the cam to rotate relative to the follower, and a second position where the fourth cam surface of the control member is separated from the second cam surface of the cam;
- and
- a second spring positioned between the control member and the follower, the second spring pushing the control member to be separated from the second cam surface.
A foldable electronic device having a main body and a flip cover hinged together by a hinge assembly, the hinge assembly comprising:
- a shaft;
- a cam placed around the shaft, and the cam having a first cam surface and a second cam surface, the second cam surface integrally formed at an inner side periphery of the first cam surface, the cam being fixed with respect to the flip cover;
- a follower placed around the shaft, and the follower having a third cam surface, the follower being fixed with respect to the main body;
- a first spring providing an elastic force to make the first cam surface of the cam and the third cam surface of the follower resist each other;
- a control member pivotably mounted around the shaft having a fourth cam surface, the control member being movable to push the cam to rotate to cause the first cam surface of the cam to rotate relative to the third cam surface of the follower;
- and
- a second spring positioned between the control member and the follower, the second spring pushing the control member to be separated from the second cam surface.
Dependencies are inferred from the claim text.