| 摘要 |
PROBLEM TO BE SOLVED: To provide a door stopper for closing a door by releasing a holding state after a given time by holding the door in an opened state. SOLUTION: This door stopper 1 has: a base board 3 installed in a lower part of the door 2; a slider 4 sliding on the base board 3; an arm holding stay 6 fixed to the slider 4 and rockingly holding the arm 5; and the arm 5 rockingly held by the arm holding stay 6 and having a tip part 5e freely engaging with a floor surface 8. The door stopper freely holds the door 2 in the opening state by engaging the tip part 5e of the arm 5 with the floor surface 8 by pushing down the slider 4 by rocking the arm 5, and has: a tension spring 11 having one end locked on the base board 3 and tensioning the slider 4; rollers 12 and 12 pivoted on the base board 3 and meshing with the slider 4; push springs 13 and 13 for energizing the rollers 12 and 12; and adjusting bolts 14 and 14 for adjusting energizing force of the push springs 13 and 13 by pressing the push springs 13 and 13. COPYRIGHT: (C)2007,JPO&INPIT
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