Patent ID: 6032934
Filing Date: 2000-03-07
Classification: B62J

Abstract:
A shock-absorbing device comprising:a first crank member having a first hole formed therein, said first crank member further including:an engaging wall that confines said hole, a split opening formed in said engaging wall and extending radially to communicate with said first hole, two threaded holes which are formed in said engaging wall on two sides of said split opening and which are aligned in a direction parallel to a line tangent to said first hole, and a clamping screw engaging threadedly said threaded holes;a buffering unit inserted into said first hole and having a cylindrical hollow outer wall, a cylindrical hollow inner wall coaxially mounted in said outer wall, an annular rubber cushion disposed between said inner and outer walls, and a shaft extending through and engaging said inner wall, said outer wall engaging said first crank member; anda second crank member connected to and rotatable about and together with said shaft, said rubber cushion being deformed by said outer and inner walls in order to retard pivotal movement of said first crank member relative to said second crank member about said shaft.