Folding support mechanism, folding bed stand and folding seat bracket

Abstract

The invention discloses a folding support mechanism, a folding bed stand and a folding seat bracket. The folding support mechanism comprises a pin joint rack which includes two connecting rods in pin joint; the folding support mechanism further comprises a support bar; the two connecting rods are slidably connected with a sliding seat respectively, two ends of the support bar are rotatably connected with the sliding seats of the two connecting rods respectively, and maximum rotation unfolding angles of the support bar relative to the two connecting rods are no more than 90 DEG. According to the invention, since the maximum rotation unfolding angles of the support bar relative to the two connecting rods are no more than 90 DEG, the support bar is rotary relative to the two sliding seats; thus, the phenomenon of deadlocking is avoided, it is guaranteed that the support bar moves to a position where the support bar abuts against the two connecting rods so as to maintain unfolding, and the following beneficial effects are obtained: a) unfolding can be maintained by only using one support bar, so the advantages of saving of materials, low cost and light weight are obtained; b) demands for unfolding and folding can be satisfied at the same time; c) unfolding and folding are convenient and smooth, and the folding support mechanism has a long service life; and d) strength of the connecting rods are not influenced.

Description

technical field [0001] The invention relates to a foldable bracket mechanism, a foldable bed frame and a foldable chair frame. Background technique [0002] The foldable support mechanism is widely used in leisure products such as folding bed frames and folding chair frames. For example, the folding bed frame introduced in US Pat. It includes a pivot frame, the pivot frame includes two connecting rods, the middle parts of the two connecting rods are pivotally connected together, and the ends of the connecting rods of every two adjacent support mechanisms are connected together by being pivotally connected to the connecting seat. In order to increase the support strength, a telescoping tube that can expand and contract is also connected between the upper and lower connecting seats in the bracket mechanism. This support mechanism has the following disadvantages: 1. The telescopic tube includes at least two pipe fittings. Even if there are two pipe fittings, the material used ...

AI Technical Summary

Problems solved by technology

This support mechanism has the following disadvantages: 1. The telescopic tube includes at least two pipe fittings. Even if there are two pipe fittings, the material used is large and the cost is high; 2. When the folding bed frame is in the unfolded state, the telescopic pipe is in the minimum length state When in the folded state, the telescopic tube is in the maximum length state, which is limited by the requirements of unfolding (the height of the bed frame is low) or folding (the space required is compact), so it is generally necessary to make the telescopic tube into a three-section type (including three pipe fittings) The telescopic tube uses more materials and costs more; 3. During the unfolding or folding process, the telescopic tube is easily deformed, which is inconvenient to use and has a short service life

Images