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    • 18. 发明授权
    • Work surface height adjustment mechanism
    • 工作台面高度调节机构
    • US4619208A
    • 1986-10-28
    • US686846
    • 1984-12-27
    • Andrew J. Kurrasch
    • Andrew J. Kurrasch
    • A47B5/02A47B9/12A47B9/00
    • A47B9/12A47B5/02
    • A mechanism for adjusting the height of a work surface (12) includes left- and right-side cable lift mechanisms (16, 18) coupled to a central drive mechanism (20) through cables (96). Each cable lift mechanism (16, 18) includes a hanger clip (22) engaging wall panel slots (15), a mounting plate (38) removably suspended from the hanger clip (22) and a vertically movable extrusion (74) guided along the plate (38) and having pulleys (88) engaging one of the cables (96) to support the work surface (12). Antidislodgment latches (50, 60) prevent accidental dislodgment of the mounting plate (38) and clip (22). One embodiment of the central drive mechanism (20) includes a motor-driven screw (134) and a forward slide block (114) positioned within an elongated channel (110) and mounting a slidable yoke (122) securing ends of the cables (96). The slide block (114) bears against a nut (146) captured within the channel (110) and threadably received on the screw (134). Axial movement of the nut (146) causes corresponding movement of the slide block (114) and yoke (122), thereby exerting forces through the cables (96) to selectively raise or lower the extrusion (74) and work surface (12).
    • 用于调节工作表面(12)的高度的机构包括通过缆线(96)联接到中心驱动机构(20)的左侧和右侧的缆索提升机构(16,18)。 每个缆索提升机构(16,18)包括接合壁板槽(15)的吊架夹(22),可拆卸地悬挂在衣架夹(22)上的安装板(38)和沿着 板(38)并且具有接合电缆(96)中的一个的滑轮(88)以支撑工作表面(12)。 防偏移闩锁(50,60)防止安装板(38)和夹子(22)的意外移动。 中心驱动机构(20)的一个实施例包括电机驱动螺钉(134)和位于细长通道(110)内的前滑块(114),并安装固定电缆端部的可滑动轭 )。 滑动块(114)抵靠在通道(110)内捕获的螺母(146)并且螺纹地容纳在螺钉(134)上。 螺母(146)的轴向运动导致滑动块(114)和轭架(122)的相应运动,从而通过电缆(96)施加力以选择性地升高或降低挤压件(74)和工作表面(12)。