| 摘要 |
The apparatus 100 for connecting bars according to the present invention comprises a pair of bodies 100 for receiving the bars 1, the pair of bodies having cylindrical shape which faces from each other; a plurality of stoppers 120 for firmly holding the bars 1, the plurality of stoppers 120 provided in the pair of bodies in two steps or several steps; a spring 130 for elastically longitudinally supporting the pair of bodies 110, the spring 130 provided in the bottom surface of the plurality of stoppers 120; and an elastic ring 140 for elastically supporting the plurality of stoppers 120 in the radial direction of the pair of bodies, the elastic ring 140 provided on the inner peripheral surface of the plurality of stoppers 120.
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