| 摘要 |
<p>The present invention relates to a bed having an individually independent spring unit structure. A spring unit fixing case (10) and a fixing unit (15) is fixated to a vertical line (31) and a horizontal line (30), and a silicon film (2) is coated on a steel spring (3), and the steel spring is packaged with cloth (1). A perforated portion enables a protrusion portion (11) of the fixing case (10) to be extrusion-molded, and the protrusion portion (12) is pressed and comes in contact with the fixing portion (15) so as to fixate the fixing case (10) and the fixing portion (15). According to the present invention, the spring unit does not generate a hitting sound between iron cores.</p> |
