US 11,986,693 B2
Wearable device using flexible non-powered variable impedance mechanism
Kyu-Jin Cho, Seoul (KR); and Sung-Sik Yun, Seoul (KR)
Assigned to Seoul National University R&DB Foundation, Seoul (KR)
Appl. No. 17/295,762
Filed by Seoul National University R&DB Foundation, Seoul (KR)
PCT Filed Oct. 30, 2019, PCT No. PCT/KR2019/014441
§ 371(c)(1), (2) Date May 20, 2021,
PCT Pub. No. WO2020/105890, PCT Pub. Date May 28, 2020.
Claims priority of application No. 10-2018-0144530 (KR), filed on Nov. 21, 2018; and application No. 10-2019-0133985 (KR), filed on Oct. 25, 2019.
Prior Publication US 2022/0008776 A1, Jan. 13, 2022
Int. Cl. A63B 21/04 (2006.01); A63B 21/00 (2006.01); A63B 21/055 (2006.01); A63B 23/04 (2006.01)
CPC A63B 21/0407 (2013.01) [A63B 21/00076 (2013.01); A63B 21/00181 (2013.01); A63B 21/0552 (2013.01); A63B 21/4005 (2015.10); A63B 21/4015 (2015.10); A63B 2023/0411 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A wearable device using a flexible non-powered variable impedance mechanism, the wearable device comprising:
a connection portion configured to be located on a user's back and located between the user's neck and bottom;
a continuous upper cable including a first upper string having one side configured to be worn on one side of an upper body of the user located above the connection portion and another side extending in a direction of the connection portion, a second upper string having one side configured to be worn on the other side of the upper body of the user located above the connection portion and another side extending in the direction of the connection portion, and an upper connection string attached to one side of the connection portion, having one side integrally connected to the first upper string and another side integrally connected with the second upper string;
a multipartite lower cable including a first lower string having one side configured to be on a first leg among a pair of legs of the user and another side extending in a direction of the connection portion, a second lower string having one side configured to be on a second leg among the pair of legs of the user and another side extending in a direction of the connection portion, and a lower connection string attached to another side of the connection portion, wherein the lower connection string has one side integrally connected with the first lower string and the other side integrally connected to the second lower string;
an elastic portion connecting the first lower string and the second lower string and formed of an elastic material;
a first knee string configured to have one side coupled to a first foot of the user another side coupled to an upper side of the first lower string by passing through a front side of a first band;
a second knee string configured to have one side coupled to a second foot of the user and another side coupled to an upper side of the second lower string by passing through a front side of a second band;
the first band configured to wrap around a first knee provided on the first leg of the user and the second band configured to wrap around a second knee provided on the second leg of the user,
wherein the first lower string is configured to extend in a direction of the first foot of the user and is connected to the first band, and the second lower string is configured to extend in a direction of the second foot of the user and is connected to the second band; and
wherein tension based on elasticity of the first knee string and the second knee string respectively located at the front of the first band and the second band is configured to increase when the user bends their first knee and second knee, such that the first knee string and the second knee string are configured to apply pressure to the first band and the second band causing the first knee and the second knee to spread apart from each other.