| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rainwater storage tank capable of stably supporting its tank body and easy to install. <P>SOLUTION: On a tank body 2, a cylindrical screw portion 15 protruded downward is provided at the center of the bottom part whose inside area is a flat portion and whose outer peripheral portion is circularly inclined, and conical-trapezoid protruded portions 17 diameter-reduced downward and swollen downward are formed at both right and left sides of the screw portion 15. A frame 20 has an upper part as a tank body supporting part 21 which supports the tank body 2 and has almost the same shape as the bottom part of the tank body 2. The tank body supporting part 21 is provided with a hole portion through which the screw portion 15 is inserted, recessed portions 27 which have shapes corresponding to the outer shapes of the protruded portions 17, and a flat portion which is formed as an inside area. A peripheral edge area of the tank body supporting part 21 rises while curving toward the outside. A fastener 32 is screwed into the screw portion 15 through its front end side when the tank body 2 is fixed to the frame 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
