Patent ID: 8740459
Filing Date: 2014-06-03
Classification: G06F,H04M

Abstract:
1. A relative displacement device with stronger elastic pull force than push force, comprising: at least two displacement members, the displacement members being formed with respective rails slidably connected with each other, the displacement members being slidable along the connected rails to be linearly displaced relative to each other, a first of the two displacement members having a main turning displacement path formed therein, the main turning displacement path being angularly directed and having at least one arcuate turning point intermediately defined therein, a second of the two displacement members having an angularly directed subsidiary turning displacement path formed therein and communicating with the main turning displacement path, the subsidiary turning displacement path being different in orientation from the main turning displacement path, the subsidiary turning displacement path having an arcuate turning point and at least one path terminal aligning with the turning point of the main turning displacement path during relative linear displacement between the first and second displacement members, an elastic member coupled to bias the relative linear displacement between said first and second displacement members, a first end of the elastic member slidably and pivotally engaging both the main turning displacement path and subsidiary turning displacement path at a point of intersection therebetween to define an elastic pull end, a second end of the elastic member being pivotally fixed to the second displacement member to define a fixed end; wherein the elastic pull end is concurrently advanced along one of the main turning displacement path and subsidiary turning displacement path responsive to advancement along the other during relative linear displacement between the first and second displacement members, the bias of the relative linear displacement between the first and second displacement members being thereby augmented in a force range thereof; wherein the turning point of the main turning displacement path is formed with a concave side directed toward the fixed end of elastic member and an opposing convex side, and the turning point of the subsidiary turning displacement path is formed with a concave side directed away from the fixed end of the elastic member and an opposing convex side.