Patent ID: 7677541
Filing Date: 2010-03-16
Classification: A47C

Abstract:
1. A spring structure in a bed mattress which comprises a body spring formed in a coil shape, upper and lower end springs wound and extending horizontally at upper and lower portions of the body spring, a first exposure wire spring formed integrally with the upper end spring and being disposed above the upper end spring, and a first connection end portion integrally connecting the upper end spring and the first exposure wire spring to each other, wherein a first contact-preventing end is formed at the first connection end portion, said first contact-preventing end being bent upwardly or inclinedly upwardly from a distal end of the upper end spring positioned outwardly from an uppermost winding of the body spring preventing the first exposure wire spring from contacting the uppermost winding of the body spring and the upper end spring when a compression force is applied to the first exposure wire spring.