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1. 发明授权

US5337428A Adjustable bed with mechanical jack 失效
标题翻译：带机械千斤顶的可调床
公开(公告)号：US5337428A
公开(公告)日：1994-08-16
申请号：US961427
申请日：1992-10-15
申请人： Bernard J. Krauska , Randy Wisniewski , Warren J. Peterson
发明人： Bernard J. Krauska , Randy Wisniewski , Warren J. Peterson
IPC分类号： A61G7/00 , A47C19/04 , A61G7/012 , A61C7/00
CPC分类号： A47C19/045 , A61G7/012 , Y10T74/1529
摘要： An adjustable bed includes a base frame, a mattress frame and linkage for mounting the mattress frame for relative movement with respect to the base frame. A mechanical jack is operatively connected to the base frame and the linkage for moving the mattress frame between high and low positions. A mechanical jack includes an enclosure. A bearing supports a ram within the enclosure for extension and retraction. A drive plate and a hold plate define apertures through which the ram extends. A drive bar is shifted by rotation of an actuator shaft to lock the drive plate to the ram and extend the ram from the housing. The drive spring resiliently biases the drive plate to an unlocked or return position. A hold spring biases the hold plate to a locked position to prevent return movement of the ram into the enclosure. A release bar is shifted into engagement with the hold plate upon reverse rotation of the actuator shaft to release the plate and permit lowering of the ram into the enclosure.
摘要翻译：可调节的床包括基座，床垫框架和联动装置，用于安装床垫框架以相对于基架相对移动。机械千斤顶可操作地连接到基座框架和连杆机构，用于在高位置和低位置之间移动床垫框架。机械千斤顶包括外壳。轴承支撑外壳内的拉头用于伸缩。驱动板和保持板限定了压头延伸穿过的孔。驱动杆通过致动器轴的旋转而移动，以将驱动板锁定到冲头并将冲头从壳体延伸。驱动弹簧弹性地将驱动板偏压到解锁或返回位置。保持弹簧将保持板偏压到锁定位置，以防止冲头进入外壳的返回运动。释放杆在致动器轴的反向旋转时转换成与保持板接合以释放板，并允许将冲头降低到外壳中。

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