CoiLeaf spring: A hybrid system of coil and leaf springs for maximizing space utilization and energy storage

Moon, Junyoung; Ryu, Jae-Wook; Kim, Jehyeok; Lee, Giuk

doi:10.1016/j.mechmachtheory.2022.105094

Cited by 1 publication

(1 citation statement)

References 34 publications

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“…The components of the CVGC-II system are shown in Figure 2 a. CVGC-II system majorly consists of a cam, lever, and spring system [ 27 ], and each component interacts through the cam follower and spring follower. Figure 2 b illustrates the geometric relationship and relative movement between each component.…”

Section: Development Of Quasi-passive Back-support Exoskeleton: Aebsmentioning

confidence: 99%

Development of Quasi-Passive Back-Support Exoskeleton with Compact Variable Gravity Compensation Module and Bio-Inspired Hip Joint Mechanism

Song,

Moon,

Kim

et al. 2024

Biomimetics

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The back support exoskeletons have garnered significant attention to alleviate musculoskeletal injuries, prevalent in industrial settings. In this paper, we propose AeBS, a quasi-passive back-support exoskeleton developed to provide variable assistive torque across the entire range of hip joint motion, for tasks with frequent load changes. AeBS can adjust the assistive torque levels while minimizing energy for the torque variation without constraining the range of motion of the hip joint. To match the requisite assistance levels for back support, a compact variable gravity compensation module with reinforced elastic elements is applied to AeBS. Additionally, we devised a bio-inspired hip joint mechanism that mimics the configuration of the human hip axis to ensure the free body motion of the wearer, significantly affecting assistive torque transmission and wearing comfort. Benchtop testing showed that AeBS has a variable assistive torque range of 5.81 Nm (ranging from 1.23 to 7.04 Nm) across a targeted hip flexion range of 135°. Furthermore, a questionnaire survey revealed that the bio-inspired hip joint mechanism effectively facilitates the transmission of the intended assistive torque while enhancing wearer comfort.

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Section: Development Of Quasi-passive Back-support Exoskeleton: Aebsmentioning

confidence: 99%

Development of Quasi-Passive Back-Support Exoskeleton with Compact Variable Gravity Compensation Module and Bio-Inspired Hip Joint Mechanism

Song,

Moon,

Kim

et al. 2024

Biomimetics

Self Cite

View full text Add to dashboard Cite

show abstract

CoiLeaf spring: A hybrid system of coil and leaf springs for maximizing space utilization and energy storage

Cited by 1 publication

References 34 publications

Development of Quasi-Passive Back-Support Exoskeleton with Compact Variable Gravity Compensation Module and Bio-Inspired Hip Joint Mechanism

Development of Quasi-Passive Back-Support Exoskeleton with Compact Variable Gravity Compensation Module and Bio-Inspired Hip Joint Mechanism

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