Patent ID: 8109490

Claim:
A spring structure having a contact-preventing and rigidity-reinforcing function for 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 in such a fashion as to be disposed above the upper end spring, the first exposure wire spring comprising a plurality of windings, and a first connection end portion for integrally connecting the upper end spring and the first exposure wire spring to each other, wherein a first contact-preventing/rigidity-reinforcing end is formed at the first connection end portion in such a fashion as to be bent in a “Z” shape upwardly from a distal end of the upper end spring positioned outwardly from an uppermost winding of the body spring so that the first exposure wire spring is prevented from being in contact with the uppermost winding of the body spring and with the upper end spring, and so that rigidity of the first contact-preventing/rigidity-reinforcing end is reinforced.