| 摘要 |
In view of an object of preventing, by making lower portions of side portions of an upholstery material less slidable, slackening due to moving up of an upholstery material, and also preventing a front-surface portion of the upholstery material being excessively warped backward, a high-friction member (30, 30) is disposed on an inner surface of both side portions of the upholstery material (26) on a lower portion side thereof supporting the sitting person around the hip, the high-friction member being configured to increase the sliding resistance in an area of contact between the upholstery material (26) and right and left side frames (18, 18). |
