JPS622736U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a plan view of an elastic joint material according to an embodiment of the present invention, and FIG. 2 is a front view of the same elastic joint material,
FIG. 3 is a side view of the same elastic joint material. Figure 4 is a partial front view of a building board with decorative grooves constructed using the same elastic joint material, Figure 5 is an enlarged cross-sectional view taken along the line - in Figure 4, and Figure 6 is a Figure 4-
Fig. 7 is an enlarged view of the line cross section, and Fig. 7 is a diagram showing the -
FIG. 1: Substrate, 2: Projection, 3: First bulge, 4: Second bulge, 5: Recess, 11: Building board, 12: Decorative groove.

Claims (1)

[Scope of utility model registration request] Used for joints formed by arranging the decorative grooves on one side of the building board and the decorative grooves on the other side on the same line, by placing the end faces of building boards with decorative grooves formed on the surface and openings on the end faces facing each other. It is an elastic joint material, in which protrusions are arranged in a row along the longitudinal direction in the center of a strip-shaped substrate, and at the top of the protrusions and at the position of the top on the substrate side, respectively, and superimposed on the substrate, on both sides of the protrusions. A first bulge and a second bulge that abut against the end surface of the arranged building board are arranged in succession along the longitudinal direction, and the end surface of the building board superimposed on the board is attached to the first bulge at the top of the protrusion. An elastic joint material for decorative grooved building boards, characterized in that a concave portion is formed that communicates with the decorative groove opening.