Patent ID: 8967170
Filing Date: 2015-03-03
Classification: A45B

Abstract:
1. An adjustable positioning structure for a walking stick comprising: an outer rod including a griping head disposed on a first end thereof and a limiting sleeve mounted on a second end thereof, the limiting sleeve having a shoulder formed on an inner wall thereof, and the outer rod also including a first screwing section defined around an inner wall thereof; an inner rod including an anti-slip pad fixed on a first end thereof and a flange formed around a second end thereof, and the second end of the inner rod being inserted into the outer rod, such that the flange is limited by the shoulder of the limiting sleeve, the inner rod also including a slot passing through a middle section thereof; an actuation post including a second screwing section defined around a first end thereof and a bushing fitted on a second end thereof, the bushing having a through hole horizontally formed therein, wherein the second screwing section of the actuation post is inserted into the outer rod, and the bushing is inserted into the inner rod; the actuation post also including a holding sheath fitted on the inner rod and a bolt inserted through the holding sheath, the slot of the inner rod and the through hole of the bushing; the actuation post further including a stopping piece fixed on a middle section thereof; a pushing member including a conical face defined on a first end thereof, a second end inserted into the inner rod, an orifice formed thereon so as to inert the second screwing section of the actuation post, and a spring being biased against the pushing member and the stopping piece; an expending member including an aperture for fitting the expending member with the first end of the actuation post, a nut for screwing with the second screwing section so as to limit the expending member and the pushing member, a plurality of expansion sheets vertically extending around an outer wall thereof and surrounding around the actuation post, and a resilient loop fitted on a distal end thereof, such that the conical face of the pushing member pushes the plurality of expansion sheets to force the resilient loop, and then the resilient loop is biased against the first screwing section of the outer rod, thereby fixing the outer rod and the inner rod securely.