Manual sofa stretching device

The utility model is applicable to the technical field of sofas, and provides a manual sofa stretching device which comprises a base, a functional frame is arranged on the base, the functional frame comprises a leg structure, a seat structure and a back structure, the leg structure is connected with the seat structure, and the seat structure is connected with the back structure; according to the utility model, a connecting rod mode with good stability is adopted, so that abrasion is not easy to occur after long-term use, the legs are more smoothly unfolded or folded, the service life is greatly prolonged, and the use stability is good. 本实用新型适用于沙发技术领域，提供了一种沙发手动伸展装置，包括底座，所述底座上具有功能架，所述功能架包括腿部结构、座部结构和背部结构，所述腿部结构与所述座部结构相连，所述座部结构与所述背部结构相连；本实用新型采用稳定性好的连杆方式，长久使用后也不容易出现磨损，使得腿部打开或收起更加顺畅，使用寿命大大提升，使用稳定性好。