Patent ID: 6092780
Filing Date: 2000-07-25
Classification: E04H,F16F

Abstract:
A low-bed type seismic isolator for a display case, said seismic isolator comprising:at least two lines of arcuate X-rails fixed to a lower plate on a foundation, each of said X-rails having a lower central portion and higher end portions;at least two lines of arcuate Y-rails fixed to a lower surface of an upper plate above said X-rails, each of said Y-rails having a higher central portion and lower end portions in a direction perpendicular to said X-rails;connection blocks, each having a lower portion clamping a corresponding X-rail through a ball bearing, an upper portion clamping a corresponding Y-rail through a ball bearing, and a disk spring provided at the central portion thereof;absorbers disposed on the ends of said X-rails and Y-rails, respectively; andrecesses, provided in said upper plate, for fixedly accommodating support legs fixed to a lower surface of a seismic isolation object and protruded downwardly from the seismic isolation object.