A linear driving mechanism is provided with variable stroke by approaching or distancing the linear linkage to the seat of the main body, such that the slant moving shaft on the seat is able to bump and push the linear linkage with enlongated or shortened relative distances, thereby changing the horizontal stroke of the linear linkage. Simply adjusting the distance between the linear linkage and the seat can quickly change the horizontal stroke of the linear linkage and flexibility of function comes with simplified mechanism.本發明的可變作動行程的線性致動機構，利用線性連桿相對靠近或遠離本體的軸座時，使軸座上的傾斜移動軸以拉長或縮短的相對距離碰撞帶動線性連桿，以改變線性連桿的水平移動行程。透過調整線性連桿相對軸座的距離即可快速改變線性連桿的水平移動行程，使線性致動機構在精簡的機構設計下具有更靈活的功能。
