1results about How to "Price advantage" patented technology

The utility model provides a sofa bed. The sofa bed includes lower frame and upper frame, the upper frame passes through electric moving mechanism and is installed on the lower frame, the side top of lower frame is fixedly installed with outer frame, the inboard of outer frame is fixedly installed with steel pipe, is provided with the sliding support mechanism for supporting the upper frame on the steel pipe. The utility model provides a sofa bed solves the existing electric sofa bed both sides for supporting the track of upper frame because of using the steel main rail in addition steel ball design, after the operation aging or the adhesion of foreign matters, easy to appear the situation such as jam, abnormal sound, drop ball, and then influence the service life technical problem.