Patent ID: 9205549
Filing Date: 2015-12-08
Classification: B25G,Y10T

Abstract:
1. A retractable bar comprising: an inner tube having a plurality of spaced locating holes; an outer tube axially movably sleeved onto the inner tube, the outer tube having a first hollow portion at a first end thereof and a second hollow portion at a second end thereof; and a positioning assembly including a base sleeved onto the outer tube and having a mounting chamber in communication with the first hollow portion of the outer tube, a sliding block slidably disposed in the first hollow portion of the outer tube and the mounting chamber of the base and having an abutment portion with a guiding slot, a knob movably disposed on the second hollow portion of the outer tube, a linking member disposed in the outer tube and connected between the sliding block and the knob through the first and second hollow portions of the outer tube, a locating pin axially movably mounted in the mounting chamber of the base and inserted into one of the locating holes of the inner tube through the guiding slot of the sliding block and having an outer flange abutted against the abutment portion of the sliding block, and a first restoring spring sleeved onto the locating pin and stopped between an inner surface of the base and the outer flange of the locating pin; wherein the abutment portion of the sliding block has an inclined surface, a horizontal bottom surface connected with the inclined surface and abutted against the outer flange of the locating pin, and the guiding slot extending from the inclined surface to the horizontal bottom surface; wherein the positioning assembly further comprises an elastic sheet having a first horizontal section mounted to the base, a second horizontal section abutted against the horizontal bottom surface of the abutment portion of the sliding block and having a through hole for insertion of a bottom end of the locating pin, and an inclined section connected between the first and second horizontal sections and abutted against the inclined surface of the abutment portion of the sliding block.