Patent ID: 8136338

Claim:
A device for assembling and disassembling a bicycle chain comprising: a main body including an assembling seat and a rear cap, a threaded hole, an assembling hole, and a sliding hole in communication with the assembling hole being coaxially formed in the assembling seat, a moving space being in communication with the assembling hole and the sliding hole, and an assembling space being located between the threaded hole and the assembling hole; an actuating member being screwed into the threaded hole; a rod member being inserted into the assembling hole and including a guiding portion; a pulling member including a pulling portion and a connecting portion and being slidably disposed in the sliding hole in such a manner that the pulling portion is located outside the sliding hole, and the connecting portion is connected to the rod member; and an elastic plate including a first end and a second end and being assembled in the moving space, the first end being fixedly connected to the main body, and the second end being connected to the rod member, so that the elastic plate provides an elastic restoring force to the pulling member and the rod member; wherein the assembling seat includes a first sliding groove in communication with the assembling hole, and a first groove in communication with the assembling hole and the first sliding groove, the rear cap includes a second sliding groove and a second groove in communication with the second sliding groove, the second sliding groove and the first sliding groove define the sliding hole, the second groove and the first groove define the moving space; the sliding hole of the main body includes a first surface and a second surface that are parallel to and staggered with each other, the pulling portion of the pulling member is connected to the connecting portion of the pulling member by a neck portion; when the guiding portion is located in the assembling hole, and the neck portion abuts against the second surface of the sliding hole, when guiding portion of the rod member is located in the assembling space, the neck portion of the pulling member abuts against the first surface of the sliding hole.