Patent ID: 8608118
Filing Date: 2013-12-17
Classification: F16B,Y10T

Abstract:
1. A clamping device for a telescopic rod which includes outer and inner segments respectively having joint ends telescopically joined to each other along a longitudinal axis, said clamping device comprising: a flexible sleeve adapted to be secured on the joint end of the outer segment, and having a collar which has a grasping surface that circumscribes an axially extending bore along the longitudinal axis for receiving the joint end of the inner segment, and which has a gap that extends axially and that is communicated with said axially extending bore to define two opposite side edges, and first and second lugs which respectively extend from said side edges in a first transverse direction relative to the longitudinal axis, and which are spaced apart from each other in a second transverse direction that is transverse to both the first transverse direction and the longitudinal axis, said first and second lugs being displaceable in the second transverse direction between untightened and tightened positions where said gap has larger and smaller clearances, respectively; an elastic lining member made from a material with a higher elasticity than that of said collar, and having a base lining segment which is disposed on said collar and in intimate contact with said grasping surface, and which is diametrically opposite to said gap relative to the longitudinal axis, and two curved flanking segments which respectively and angularly extend from two lateral edges of said base lining segment about the longitudinal axis, and which are in intimate contact with said grasping surface such that, as a result of displacement of each of said first and second lugs from the untightened position to the tightened position, each of said curved flanking segments is strained so as to acquire a biasing force that biases each of said curved flanking segments back toward the untightened position; and a tightening unit having a bolt member which extends through said first and second lugs along a transverse axis in the second transverse direction, and a lever member which is pivotally connected to said bolt member about a hinge axis parallel to the longitudinal axis and which has a camming surface that is configured to be angularly displaced upon turning of said lever arm about the hinge axis so as to press said first lug to move toward said second lug by virtue of camming action of said camming surface, thereby displacing said first and second lugs to the tightened position.