Foot rest extending mechanism and seat telescopic device

Abstract

The invention relates to a footrest extension mechanism and a seat telescopic device. The footrest extension mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first footrest piece, a linkage rod, a second footrest piece and a footrest connecting piece, one end of the second connecting rod is hinged to the first footrest piece, the other end of the second connecting rod is hinged to the first connecting rod, the first connecting rod is used for being hinged to a linkage support of a seat, one end of the fourth connecting rod is hinged to the second footrest piece, the other end of the fourth connecting rod is hinged to the third connecting rod, the first footrest piece is hinged to one end of the linkage rod, and the other end of the linkage rod is hinged to the middle of the fourth connecting rod; one end of a first connecting piece of the footrest connecting piece is hinged to the middle of the second footrest piece, the other end of the first connecting piece is hinged to one end of a second connecting piece, the other end of the second connecting piece is hinged to the middle of a second connecting rod, and the middle of the second connecting piece is hinged to the middle of a fourth connecting rod. The footrest extension mechanism is advantaged in that adjusting flexibility of the footrest extension mechanism can be improved, and the extension length of the footrest extension mechanism can be increased.

Description

technical field [0001] The invention relates to the technical field of sofa supports, in particular to a footrest extension mechanism and a seat telescopic device. Background technique [0002] With the improvement of people's living standards, functional sofas and seats are becoming more and more common in daily life. With the wide application of functional sofas, the requirements for the comfort of sofa seats are getting higher and higher. Functional seats are generally equipped with mechanical stretching devices, so that the seat can be adjusted between sitting, leisure and lying positions. [0003] The existing seat device has the following defects: when the seat is stretched, the footrest mechanism is easy to rub against the ground, which affects the user's use; the seat footrest mechanism can only be rotated simply, and the overall extension length is relatively short. When lying down, the legs and feet cannot be fully supported, which affects the comfort of the seat...

AI Technical Summary

Problems solved by technology

[0003] The existing seat device has the following defects: when the seat is stretched, the footrest mechanism is easy to rub against the ground, which affects the user's use; the seat footrest mechanism can only be rotated simply, and the overall extension length is relatively short. When lying down, the legs and feet cannot be fully supported, which affects the comfort of the seat;

[0004] The traditional chute structure is used in the existing mechanical stretching device with extended footrest. The chute structure is prone to noise during use, and the chute is easy to wear after repeated use, resulting in the inability to open or close the leg structure smoothly. , poor structural stability

Images