US 11,744,030 B2
Hinge structure and foldable electronic device
Xuehu Zhang, Beijing (CN); Lianjia Zhao, Beijing (CN); Zhengquan Wang, Beijing (CN); and Hongwei Jin, Beijing (CN)
Assigned to Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
Filed by Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
Filed on Jun. 29, 2020, as Appl. No. 16/915,374.
Claims priority of application No. 202010104987.7 (CN), filed on Feb. 20, 2020.
Prior Publication US 2021/0267076 A1, Aug. 26, 2021
Int. Cl. H05K 5/02 (2006.01); E05D 3/12 (2006.01); E05D 3/18 (2006.01); E05D 11/10 (2006.01); F16C 11/04 (2006.01); F16C 11/10 (2006.01); H04M 1/02 (2006.01)
CPC H05K 5/0226 (2013.01) [E05D 3/122 (2013.01); E05D 3/18 (2013.01); E05D 11/1014 (2013.01); F16C 11/04 (2013.01); F16C 11/10 (2013.01); E05Y 2201/218 (2013.01); E05Y 2201/462 (2013.01); E05Y 2900/606 (2013.01); H04M 1/0268 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A hinge structure, comprising:
a supporting sheet having an unfolded, flattened state and a folded state;
at least one first hinge connected to the supporting sheet, the at least one first hinge being configured to drive the supporting sheet to switch between the unfolded, flattened state and the folded state; and
at least one flattening support comprising a first support, a second support, and a flattening bracket, the flattening bracket being connected to the first support and the second support, and the flattening bracket being connected to the supporting sheet;
wherein when the supporting sheet is in the unfolded, flattened state, the first support and the second support interact with each other and generate a force parallel to a plane where the supporting sheet is located, to maintain the supporting sheet in the unfolded, flattened state,
wherein the supporting sheet comprises a first supporting sheet and a second supporting sheet, each of the first supporting sheet and the second supporting sheet being connected to the at least one first hinge,
wherein the at least one first hinge comprises:
a trajectory limiting mechanism comprising a first hinge bracket, a first slider connected to the first supporting sheet, and a second slider connected to the second supporting sheet, the first slider comprising a first hollow sliding slot and the second slider comprising a second hollow sliding slot; and
a synchronization mechanism comprising a cylindrical gear set, a first guide rod gear, and a second guide rod gear, each of the first guide rod gear and the second guide rod gear comprising a gear end and a guide rod end, the gear end of the first guide rod gear engaging with a first end gear of the cylindrical gear set, and the gear end of the second guide rod gear engaging with a second end gear of the cylindrical gear set, the guide rod end of the first guide rod gear slidably cooperating with the first hollow sliding slot and the second guide rod end slidably cooperating with the second hollow sliding slot to drive each of the first slider and the second slider into rotation relative to the first hinge bracket.