To provide a bushing with a simple structure, which effectively prevents water from flowing inside and outside the wall body in comparison with a conventional general bushing, and facilitates the addition/removal of piping and wiring and the attachment/detachment of the bushing even after construction.
The bushing includes an elastomeric hollow body to be attached to a hole penetrating through the wall body from the outer face to the inner face in a detachable way. It also includes: a cylindrical part contacting the inner circumferential surface of the hole on the wall body; a sucker arranged at the end of the outer side of the wall body; and a jaw arranged at the end of the inner side of the wall body when the hollow body is attached to the wall body. The outer diameter of the cylindrical body is made larger according to a distance from the jaw, a penetration hole is so arranged in the sucker and the jaw as to penetrate the cylindrical body; and the inner face of the cylindrical body is so formed as to have a partially enlarged inner diameter to the inner diameter of the penetration hole.
JP5446953 | Grommet |
JP2003142846 | CABLE HOLDING STRUCTURE |
JP4158868 | Fire protection member for flammable long object penetration |
HIRAI JUN
ESPEC CORP
JPS61121617U | 1986-07-31 | |||
JP2003230213A | 2003-08-15 |
Kawamura Taku
Yousuke Fujimori
Seiji Tani
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