Comfortable shape design of rigid supporting surface for short-time relaxation chair.
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Accession number;00A0274768
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| Title;Comfortable shape design of rigid supporting surface for short-time relaxation chair. |
| Author;
YAMAZAKI NOBUTOSHI
(Keio Univ., Fac. of Sci. and Technol.)
MORONAGA YUICHI
(Keio Univ., Fac. of Sci. and Technol.)
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Journal Title;Japanese Journal of Ergonomics
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Journal Code:S0258A
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ISSN:0549-4974
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VOL.36;NO.1;PAGE.29-37(2000)
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| Figure&Table&Reference;FIG.11, TBL.3, REF.11 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;A compact relaxation chair for personal use is proposed based on the concept of rigid support, which allows removal of cushion volume and simplification of the overall structure. The most comfortable supporting line was determined for sixty-three subjects (Average: 29.3 years old, 169.4 cm, and 62.8 kg) using an experimental chair. The surface of the experimental chair is divided laterally into 16 narrow rigid plates. The supporting height and cushion spring of each plate are freely adjustable. The back and seat angles of the experimental chair were fixed as 30 and 15 degrees, respectively. Pillow position and angle of ottoman were individually adjusted. The range of comfortable seat lines, as determined by the adjustment of the supporting height, was small; therefore, the average line was accepted as the common comfortable seat line. Determined backrest lines were classified into the following four types: flat upper-back/convex lower-back, concave upper-back/flat lower-back, flat upper-back/flat lower-back, and concave upper-back/convex lower-back. Sensory evaluation performed by sitting against each of the four backrest types revealed the concave upper-back (maximum depth: 6 mm)/convex lower-back (maximum height: 8 mm) to be the most comfortable supporting line, regardless of individual physique. (author abst.) |
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