Support structure for installing ceiling plate

A support structure for installing a ceiling plate, comprising:

• a hanging member (110) that is fixed under a slab of a ceiling;
• a ceiling plate support bar (120) that is provided with a pair of mounting parts on both sides of a center and a channel (122) provided at a lower portion;
• and
• a hammer bolt (130) fastened to the ceiling plate support bar (120),
• wherein the channel (122) for coupling the hammer bolt (130) includes a pair of horizontal mounting pieces (122A) that are provided on both sides of the lower portion of the ceiling plate support bar (120), a pair of left and right upright channel pieces (122B) whose upper end portions are connected to the pair of horizontal mounting pieces (122A), and a pair of bolt coupling support pieces (122C) that is connected to the pair of upright channel pieces (122B) and extends horizontally in a direction approaching each other, a bolt coupling slit (122D) is secured between inner ends of the pair of bolt coupling support pieces (122C) facing each other, and a bolt head coupling space (122E) is secured between the pair of bolt coupling support piece (122C) and the pair of left and right upright channel pieces (122B),
• the ceiling plate support bar (120) further includes a mounting grip piece (140) that is disposed above the channel (122) and coupled via a hinge, and a grip actuating elastic body (150) that supports the mounting grip piece (140) to rotate downward toward the horizontal mounting piece (122A) of the channel (122),
• the hinge coupling the mounting grip piece (140) to the ceiling plate support bar (120) includes a hinge boss that is provided on the ceiling plate support bar (120) and a hinge pin that is coupled to the mounting grip piece (140) and rotatably coupled to the hinge boss, the grip actuating elastic body (150) is composed of a torsion spring in which a first elastic wire part (153) and a second elastic wire part (154) are connected to a circular elastic coil part (152), the circular coil elastic part is coupled to an outer circumferential surface of the hinge pin, and the first elastic wire part (153) and the second elastic wire part (154) are connected to the ceiling plate support bar (120) and the mounting grip piece (140), respectively,
• the mounting grip piece (140), the hinge, and the grip actuating elastic body (150) are provided on both sides of the ceiling plate support bar (120), and
• in a state where the ceiling plate (2) is mounted on the horizontal mounting piece (122A) of the channel (122), the mounting grip piece (140) is configured to elastically rotate downward by an elastic force of the grip actuating elastic body (150) to elastically grip bottom and top surfaces of the ceiling plate (2).