| 摘要 |
The present invention relates to a tongue and groove having a clearance structure using a clearance adjuster insert in wooden panels used as aesthetic wall-finishing materials to prevent the indoor visibility of black activated carbon boards or charcoal boards, which are installed on the wall surfaces of a building in order to not only contain radon gas that is exuded from concrete buildings and the ground, but also to absorb volatile organic compounds that occur indoors. The wooden panels, which are wall-finishing materials, are generally finished on a wall using a tongue-and-groove technique to firmly couple the surfaces of the panels through horizontal or vertical alignment. However, in order for the wooden panels to be adhered to activated carbon boards or to charcoal boards that not only absorb radon but also contain odors and volatile organic compounds that occur indoors, and since there is no clearance for wooden panels when using s conventional tongue-and-groove technique to provide a firm coupling, volatile organic compounds cannot be absorbed for the sake of indoor air quality. Therefore, a clearance structure that provides a uniform thickness that is not greater than the thickness of conventional wooden panels is used and an invisible clearance structure is installed using a tongue-and-groove technique, so that a simple and convenient clearance structure for tongue-and-groove wall panels may be provided which uses a clearance adjuster insert, in order to sufficiently utilize the absorption characteristics of activated carbon, or charcoal or activated carbon boards or charcoal boards, disposed on the inside of the wooden panels. |
