To allow metallic lock fittings, by which multiple rubber cables arranged in a bed in order to stretch the bed by desired tension are locked to the inner peripheral part of a frame, not to be welded by to be arranged in the frame concerning a trampoline made of aluminum.
The trampoline includes: the metallic lock fittings 6 where a ring part 31 is arranged at one end and a screw part 32 is at the other end so as to have a nut 33 between them; fixing nuts 36; and an aluminum fixing nut holding board 35 which holds by press fitting the plurality of fixing nuts 36 at the attachment interval of the rubber cables 5. Multiple through-holes 34 are arranged on the inner side surface of the frame 1 at the attachment interval of the rubber cables 5. The fixing nut holding board 35 is inserted to the frame 1. The metallic lock fittings 6 are inserted to the through-holes 34 so as to be screwed onto the fixing nut 36. Then, the nut 33 and the fixing nut holding board 35 hold the inner side surface of the frame 1 between them.
COPYRIGHT: (C)2008,JPO&INPIT
| JP2001299956A | 2001-10-30 | |||
| JPS55158067A | 1980-12-09 | |||
| JPS5633957U | 1981-04-02 | |||
| JP2001063498A | 2001-03-13 | |||
| JP2004084220A | 2004-03-18 | |||
| JPH07305718A | 1995-11-21 | |||
| JPH116367A | 1999-01-12 | |||
| JP2003096953A | 2003-04-03 |
Torii Kazuhisa
Takayoshi Tagawa
Higashio Masahiro