| 摘要 |
The purpose of the present invention is to provide a soundproof and dustproof device for a door which minimizes a sliding friction generated between a floor and a contacting member of a soundproof assembly which blocks a gap between a lower end of a door and a floor to minimize noise due to frictional sound and wear, which separates the soundproof assembly in a plurality of numbers and arranges a plurality of soundproof assemblies in parallel, whereby the soundproof assemblies are individually operated to always be in contact with the floor so as to minimize the gap with the floor to be able to prevent noise and dust from being introduced even when the floor of an entrance in an arranging direction of the soundproof assemblies is not flat and has curves of different heights. According to the present invention, the soundproof and dustproof device for a door comprises: a device case installed at a lower end of a door; and the soundproof assemblies installed on the device case, wherein the soundproof assemblies comprise a vertical shaft installed on the device case to be freely movable in an upward and downward directions; a weight and a pressed plate fixed to both ends of the vertical shaft, respectively; and a cylindrical contacting member positioned on a lower part of the pressed plate, having a through-hole at the center of rotation, whereby one part is exposed at an opened, lower part of the device case to contact the floor. The soundproof assemblies are arranged in parallel along the longitudinal direction of the device case to be individually operated, and further comprise a support shaft whereby both ends are fixed by being arranged in a longitudinal direction of the device case, and is installed by passing through the through-hole formed on the contacting member of the soundproof assemblies. |
