Multifunctional Expansion Bolt Assembly

A multifunctional expansion bolt assembly comprising:

• a sleeve including opposite first and second ends, wherein a hollow body is formed between the first end and the second end of the sleeve, wherein the second end of the sleeve includes at least one open groove, and wherein the at least one open groove has an opening on an end face of the second end of the sleeve;
• a screw rod including opposite first and second ends, wherein the first end of the screw rod includes a threaded portion, wherein at least a portion of the threaded portion protrudes beyond the first end of the sleeve, wherein the second end of the screw rod includes a conic portion having gradually increasing diameters towards an end face of the second end of the screw rod, wherein the conic portion has a maximal diameter greater than an inner diameter of the second end of the sleeve, wherein the screw rod includes at least one engaging portion, wherein the screw rod has non-circular cross section at the at least one engaging portion, and wherein the at least one engaging portion engages with the at least one open groove;
• and
• a connecting member including opposite first and second ends, wherein the second end of the connecting member has an inner threading in threading connection with a portion of the threaded portion of the screw rod, and wherein the first end of the connecting member has a connecting portion.