| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a post structure that can be built up in a boltless manner. <P>SOLUTION: The post structure comprises a lower post 1 fixed in ground, an upper post 2 connected above, and a joint post 3 connecting them both, wherein a lower end of the joint post 3 is joined to an upper end of the lower post 1. The joint post 3 has, at an outer circumference of the axial middle, a holding portion 3a for holding the upper post 2 at a lower end and an inner circumference thereof, and at an upper end, an axis alignment portion 3b for holding the upper post 2 at an inner circumference thereof. When the upper end of the joint post 3 is inserted in the inner circumference of the lower end of the upper post 2, the upper post 2 is connected and held by the holding portion 3a and axis alignment portion 3b of the joint post 3. The upper post 2 has a projection portion 4 forming a coupling pin across the inner circumference, at the inner circumference of the lower end, and the joint post 3 has grooves 5 for insertion of the projection portion 4. The connection of the joint post 3 and the upper post 2 seats the projection portion 4 in the grooves 5 to fix it stably. <P>COPYRIGHT: (C)2004,JPO |
