The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate after a 4th generation (4G) communication system such as long-term evolution (LTE). An apparatus according to an embodiment of the present disclosure may include: a first coupling portion including a rail structure comprising a rail and a slit structure comprising a slit, a second coupling portion coupled to communication equipment, and a third coupling portion, the third coupling portion may be disposed between the first coupling portion and the second coupling portion, and coupled to the rail structure and the second coupling portion, and may include a protrusion in an area adjacent to the second coupling portion, the protrusion may include a first inclined surface contacted based on the second coupling portion being tilted up and a second inclined surface contacted based on the second coupling portion being tilted down, based on the apparatus being in a first state, the third coupling portion may be configured to move along the rail structure and be inserted into the slit structure, and based on the apparatus being in a second state, the third coupling portion may be configured to move along the rail structure and be disposed to be spaced apart from the first coupling portion.