Divan accordion is laid out according to the principleaccordion. It is presented in the form of 3 parts. If you raise the seat until it clicks, the mechanism will move forward, and the sofa will decompose. To repair the accordion sofa mechanism with your own hands, you will need a new system. If the elements are arched, then the construction is not subject to repair. 
Drawing of the accordion sofa.
Manufacturing process
To make an accordion sofa with your own hands,need a screwdriver, screws, beams, beams, plywood, cardboard. Preliminary produce a sketch of future furniture. The next step involves the fabrication of a frame. This requires 4 legs of the required length. Similarly, you can make a rectangular base, legs, crossbeams and armrests. The parameters of these parts depend on the preferences of each owner. 
Instructions for assembling the accordion sofa. In carrying out this work, special attention is paid to the strength of the structure. Joints must be treated with glue. To make the accordion sofa soft, you need to take care of its stuffing. For this you can use foam rubber or synthetics. Upholstery material is laid taking into account the sketch made. The upholstery is fixed to the frame of furniture using a stapler and staples. The process of replacing the upholstery is done using screwdrivers, pliers, stapler, scissors, screws, cloth. The repair of the accordion sofa is done with an assistant. Places of installation of certain elements are fixed on the camera. Initially assorted armrests. If they are combined with the legs, then under the base of the furniture lay a bar. The sides are fixed with 2 bolts. To remove them you need to pull out the sliding structure. The next step is to dismantle the transformation mechanism. This requires a screwdriver and a screwdriver. Then, the remaining pieces of furniture are dismantled. 
Mechanism of folding and assembling the accordion sofa. Self-replacement of the upholstery is done with a screwdriver. The metal elements are dismantled. Renovation of the sofa continues after examination of the mattress. If the product is in good condition, then the upholstery is replaced. To do this, you can sew a custom-made cover or furniture with cloth by hand. In the 1st case, the cover is stretched on the sofa and fixed with a stapler with 10 mm staples. To stretch the fabric manually, you need to measure the width and length of each part of the accordion sofa. Material is cut out with a margin. The fabric begins to be fastened from the front side, doubling it. To do this, use staples. A similar process is done on the other side. The material should be stretched as far as possible along the perimeter of the entire structure. The next step involves cloth upholstery of the side elements and the central part of the furniture. If the fabric is laid in the corners, then its excess is cut (wrapped) and sewed. Staples should fit tightly into the furniture. Otherwise, they can damage the new upholstery. The assembly process is carried out in the reverse order. Back to contents</a>
Replacement of the frame
Repair of the details of the sofa. Repair of the sofa provides replacement foam. To do this, remove the upholstery. This work is performed with the help of furniture foam rubber, the density of which varies from 35-40 mm. If the spring block breaks the foam rubber, then the springs are replaced. Sacking is cut to a certain size. On the block, it is laid in 2 layers. On top put foam rubber. It is fixed to the frame by staples, and to the sacking - by glue. Then a layer of sintepon is laid. The fabric is pulled and fixed. The furniture is collected. The repair of the accordion sofa involves the installation of a new frame and a transformation mechanism. Initially, the 2nd element is dismantled. Lubricate the units with engine oil. Springs of excessive stretching are shortened. With regard to the repair of the frame, this process involves the replacement of cracked or broken structural elements. Preliminary determine their parameters. You can buy the product in the finished form in the building store. Otherwise, the elements are made to order in the carpentry shop. The parts are replaced, twisted and glued. In carrying out this process, special attention should be paid to the plywood located under the spring block. If it is poorly fixed, then the plywood is fastened with nails and PVA is glued. The elements to be dismantled are assembled. Repair of the sofa provides for the replacement of the spring unit. Springs come in 2 types:
- old (with a height of 20 cm, a diameter of 15 cm and a thickness of 5 mm);
- Modern (with a height of 12 cm, a diameter of 10 cm and a thickness of 2.2 mm).
The latter system provides for the application ofspirals. To replace them, you need to dissolve the fixation of the spiral from the 1st end. The other end is twisted. The spring is released from 2 sides and replaced. The new spiral is mounted. If several damaged elements are found in the spring unit, then a new system will have to be installed. Otherwise, the remaining spirals will start to fail.
