Molded tension rod mechanism with single lock nut

摘要

A tension rod mechanism for a tension rod having a second inner shaft slideably received by a first outer shaft and rotatable about a longitudinal axis of the tension rod. An expandable collar is threadingly engaged with a tapered first threaded shaft is configured to be received in the first outer shaft for rotational movement therewith and slidable axial movement relative thereto. A second attachment shaft fixedly connected to the tapered first threaded shaft is configured to be received in the second inner shaft for rotational and slidable axial movement therewith. When the expandable collar is in the first outer shaft and the second attachment shaft is fixedly received in the second inner shaft, a first rotation of the first outer shaft relative to the second inner shaft expands a diameter of the collar fixedly attaching the expandable collar to the first outer shaft for axial movement therewith.

主权项

1. A tension rod mechanism for a tension rod having a first outer shaft and a second inner shaft slideably received by the first outer shaft and rotatable about a longitudinal axis of the tension rod, the tension rod mechanism comprising:
a tapered threaded shaft having first end and an opposing second end, a diameter of the first end of the tapered threaded shaft being larger than a diameter of the second end of the tapered threaded shaft, the tapered threaded shaft being completely threaded and tapered from the first end to the second end; an end flange connected to the first end of the tapered threaded shaft and slidably engaging the first outer shaft; an expandable collar threadingly engaged with the tapered threaded shaft, the expandable collar configured to be received in the first outer shaft for rotational movement therewith and slidable axial movement relative thereto; and an attachment shaft fixedly connected to the second end of the tapered threaded shaft, the attachment shaft configured to be received in the second inner shaft for rotational and slidable axial movement therewith, wherein, when the expandable collar is in the first outer shaft and the attachment shaft is fixedly received in the second inner shaft, a first rotation of the first outer shaft relative to the second inner shaft expands a diameter of the collar fixedly attaching the expandable collar to the first outer shaft for axial movement therewith.