JPS6411204U

JPS6411204U -

Info

Publication number: JPS6411204U
Application number: JP10588587U
Authority: JP
Priority date: 1987-07-11
Filing date: 1987-07-11
Publication date: 1989-01-20

Description

[Brief explanation of the drawing]

第１図は本考案実施例の側断面図、第２Ａ図は
同実施例の一部を切り欠いたＡ−Ａ平面図、第２
Ｂ図は同じくＢ−Ｂ平面図である。１……台座、１ａ……台座円柱部、１ｂ……円
柱部下端の鍔部、１ｃ……円柱部上端の鍔部、２
……ボールベアリング、３，４……ゴム盤、５，
６……底板、７ａ，７ｂ……円筒壁、８ａ，８ｂ
，９ａ，９ｂ……円筒形ゴム、１０……押さえ蓋
、１０ａ……押さえ蓋の中心孔、１１……押さえ
板、１１ａ……押さえ板の中心孔、１２……地盤
側の基礎、１３……構築物側の基礎。 FIG. 1 is a side sectional view of an embodiment of the present invention, FIG. 2A is a partially cutaway A-A plan view of the same embodiment, and FIG.
Figure B is also a BB plan view. 1... Pedestal, 1a... Pedestal cylinder part, 1b... Flange part at the lower end of the cylinder part, 1c... Flange part at the upper end of the cylinder part, 2
... Ball bearing, 3, 4 ... Rubber disc, 5,
6...Bottom plate, 7a, 7b...Cylindrical wall, 8a, 8b
, 9a, 9b... Cylindrical rubber, 10... Holding lid, 10a... Center hole of holding lid, 11... Holding plate, 11a... Center hole of holding plate, 12... Foundation on ground side, 13... ...The basis of the construction side.

Claims

[Scope of Claim for Utility Model Registration] [1] A bottom plate is fixed to the foundations of the ground side and the structure side, which are insulated from each other, via an elastic material, and a pedestal is placed between both bottom plates, and the pedestal is coated with a friction reducing material. A seismic isolation device installed so that it can slide freely over a certain range and has restoring force. [2] A cylindrical wall 7a is fixed on the bottom plate 5 on the ground side, and a ball bearing 2 is rotatably laid on the inside surface of the cylindrical wall 7a, and the lower end flange 1b of the pedestal 1 is shaped like a bobbin on the ball bearing. On the other hand, the periphery of the upper end flange 1c of the pedestal 1 is highly hemmed, and a ball bearing 2 is also rotatably laid on the inner surface thereof, and the ball bearing is attached to the bottom plate 6 on the structure side. The seismic isolation device according to claim 1 of the claimed utility model registration. [3] The seismic isolation device according to claim 2 of the utility model registration, in which a Teflon or slippery metal layer is provided in place of the ball bearing 2. [4] On the ground side, the cylindrical part 1a following the upper and lower flanges 1b and 1c of the pedestal is fixed to the bottom plate 5, and a holding lid 10 that covers the upper opening surface of the cylindrical wall 7a
The center hole 10a of the pedestal is passed through, and on the structure side, it is fixed to the bottom plate 6 as well as the pedestal upper end flange 1c.
It passes through the center hole 11a of the presser plate 11 that is in close contact with the lower surface of the presser plate 11, and the diameters of the center hole 10a of the presser lid 10 and the center hole 11a of the presser plate 11 are smaller than the diameters of the corresponding flanges 1b and 1c. A seismic isolation device according to claim number [2] or [3] of the patent application. [5] Holder lids 10 at the upper and lower ends of the pedestal columnar part 1a
and center holes 10a, 11a of the presser lid and the presser plate, respectively, around the corresponding portions of the presser plate 11.
Elastic cylindrical rubber 8a, 9a in contact with the inner wall of the pedestal, and elastic cylindrical rubber 8b, in contact with the cylindrical walls 7a, 7b around the upper and lower flanges 1b and 1c of the pedestal.
The seismic isolation device according to claim [4] of the utility model registration, in which each of the 9b is ring-mounted.