| 摘要 |
<p>An armrest construction (30) for chairs (33) includes an armrest support (34) having a lower end constructed for attachment to a chair (33), an upper end, and a mounting block (35) attached to the upper end. A pivot block (36) is pivoted to the mounting block (35) at a main pivot (37), the pivot block (36) having an upwardly-extending follower (38). First and second gears (39, 40) are each pivoted to the pivot block (36), the gears (39, 40) having intermeshing teeth (41, 42) at an inner end such that rotation of the first gear (39) causes the second gear (40) to simultaneously rotate in an opposite direction, the first and second gears (39, 40) further having outer ends. A support plate (43) having pivot/slide members (44, 45) engages the outer ends of the first and second gears (39, 40), and further has a guide (46) operably engaging the follower (38) to guide lateral movement of the support plate (43) along a predetermined path. The support plate (43) is rotatable about the main pivot (37) to adjust the angular orientation of the armrest construction (30) and is laterally movable along continuously parallel positions to adjust a width of the armrest construction (30) relative to the chair (33). The armrest construction (33) is mounted on a vertically-adjustable armrest support member (34) for optimal adjustability.</p> |
