公开(公告)号：US20020184824A1

公开(公告)日：2002-12-12

申请号：US10128095

申请日：2002-04-23

Applicant: The Chamberlain Group, Inc.

Inventor： Phillip McCartney ,  Robert E. Dutka ,  Andrew Gavel ,  William Chen ,  Robert J. Olmsted

IPC: E05F003/00

CPC classification number: E05D13/00 ,  E05D13/003 ,  E05D13/1261 ,  E05F15/00 ,  E05F15/41 ,  E05F15/681 ,  E05F15/686 ,  E05Y2201/654 ,  E05Y2201/672 ,  E05Y2400/445 ,  E05Y2400/552 ,  E05Y2400/854 ,  E05Y2800/426 ,  E05Y2900/00 ,  E05Y2900/106 ,  E06B9/84

Abstract: A cable tension sensing apparatus is mounted on a wall having a door opening. The jack shaft garage door operator includes a drive unit having an electric motor for driving a jack shaft mounted above a door opening. A pull-up cable drum is connected to the jack shaft and has a multi-strand steel pull-up cable that may be payed out to lower a door or wound up to raise the door. The cable tension sensing apparatus includes a cable guide to retain the cable a substantially fixed distance from the wall and a spring driven cable follower which urges against the cable extending between the drum periphery and the cable guide. An alerting switch is connected to the cable follower and sends a signal indicating loss of cable tension when the cable follower moves beyond a predetermined distance. Additionally, the movement of the cable follower moves a door blocking arrangement to a position to block movement of the door when being raised without use of the motor.

Abstract translation: 电缆张力检测装置安装在具有门开口的壁上。 千斤顶车库门操作器包括具有用于驱动安装在门开口上方的千斤顶轴的电动机的驱动单元。 上拉电缆滚筒连接到千斤顶轴，并具有多股钢拉丝电缆，可以将其拉出以降低门或卷起来抬起门。 电缆张力感测装置包括电缆引导件，用于将电缆保持与壁的基本上固定的距离，以及弹簧驱动的电缆随动件，该弹簧驱动的电缆随动件抵靠在鼓周边和电缆引导件之间延伸的电缆。 警报开关连接到电缆跟随器，并且当电缆跟随器移动超过预定距离时发送指示电缆张力损失的信号。 此外，电缆随动件的移动将门锁定装置移动到阻止门升高而不使用电动机的位置的位置。