US 12,213,594 B2
Portable and adjustable bed
Wei Wang, Jiangsu (CN); Fahuan Zhang, Jiangsu (CN); Jian Xie, Jiangsu (CN); and Yifan Mao, Jiangsu (CN)
Assigned to NISCO CO., LTD, Jiangsu (CN)
Filed by Nisco Co., Ltd, Jiangsu (CN)
Filed on Oct. 11, 2022, as Appl. No. 17/963,256.
Application 17/963,256 is a continuation in part of application No. 16/990,085, filed on Aug. 11, 2020, granted, now 11,602,228.
Claims priority of provisional application 63/254,629, filed on Oct. 12, 2021.
Claims priority of provisional application 62/889,145, filed on Aug. 20, 2019.
Claims priority of application No. 202122641948.3 (CN), filed on Oct. 29, 2021.
Prior Publication US 2023/0034676 A1, Feb. 2, 2023
Int. Cl. A47C 20/00 (2006.01); A47C 20/04 (2006.01); A47C 31/00 (2006.01)
CPC A47C 20/041 (2013.01) [A47C 31/005 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An adjustable bed, comprising:
a frame structure having a first frame, a second frame, and a pair of connection bars detachably connecting the first frame and the second frame to one another;
a plurality of platforms disposed on the frame structure; and
an adjustable assembly coupled with the frame structure for operably adjusting one or more of the plurality of platforms in desired positions,
wherein each of the first and second frames comprises:
a pair of side rails being transversely spaced and longitudinally extended and being parallel to each other, each side rail having an upper end portion and an opposite, lower end portion; and
an upper rail and a lower rail being longitudinally spaced and transversely extended, two ends of the upper rail being rigidly connected to the upper end portions of the pair of side rails, and two ends of lower rail being rigidly connected to the lower end portions of the pair of side rails, such that the upper rail and the lower rail and the pair of side rails are co-planar in a rectangle form;
wherein the adjustable assembly comprises at least one of a back lifting assembly and a leg lifting assembly;
wherein the back lifting assembly comprises a back lifting bracket pivotally connected to the first frame, and a back lifting actuator pivotally connected between the back lifting bracket and the first frame for operably driving the back lifting bracket to pivotally move in an upward rotation direction or a downward rotation direction relative to the first frame;
wherein the leg lifting assembly comprises a leg lifting bracket pivotally connected to the second frame, and a leg lifting actuator pivotally connected between the leg lifting bracket and the second frame for operably driving the leg lifting bracket to pivotally move in an upward rotation direction or a downward rotation direction relative to the second frame;
wherein the back lifting bracket comprises a middle bar and a pair of swing arms, wherein the pair of swing arms is transversely spaced and rigidly connected to ends of the transversely extending middle bar, and each of the pair of swing arms has a first end portion and an opposite, second end portion, wherein the first end portion of each swing arm is pivotally mounted to a respective side rail of the first frame; and
wherein the back lifting actuator comprises a motor member, an outer tube extending from the motor member, an activation rod received in the outer tube, engaged with the motor member and configured to be telescopically movable relative to the outer tube according to a direction of motor rotation, wherein the motor member is pivotally connected to the upper rail of the first frame, and the activation rod has a distal end portion pivotally connected to the middle bar of the back lifting bracket, or wherein the motor member is pivotally connected to the middle bar of the back lifting bracket, and the activation rod has a distal end portion pivotally connected to the upper rail of the first frame.