RU196567U1 - SOFA-BED TRANSFORMATION MECHANISM - Google Patents

Abstract

The utility model relates to furniture production and can be used in the manufacture of upholstered furniture, in particular transformable sofa beds. The transformation mechanism of the sofa bed contains a prefabricated base, a backrest pivotally connected to the base, and a seat connected to the base and mounted with the possibility of horizontal movement relative to it, lifting mechanisms. The prefabricated base consists of welded structures of the left and right supports, equipped with plastic stops located in their upper part, connected by bolted joints in a closed loop, in front with a traverse, and behind the back frame between the brackets using antifriction washers. The technical result is to increase the usability and assembly of the sofa bed, the reliability and maintainability of its design, as well as to increase the service life. 2 s.p. f-ly, 4 ill.

Description

The utility model relates to furniture production and can be used in the manufacture of upholstered furniture, in particular transformable sofa beds.

Currently, the world furniture industry has presented a large number of modifications of folding sofas using various transformation mechanisms, modern seat and back materials, upholstery fabrics and fillers, as well as fasteners and accessories. However, not all models meet the requirements of the times and the rapidly changing needs of consumers.

One of the trends in the development of the production of transformable products from upholstered furniture, in particular sofas, sofa beds is the creation of collapsible structures of this furniture, which provide not only the ability to convert some elements of furniture designs into others, but also greatly simplify the process of transportation and storage of this furniture . Moreover, the most attractive is the creation of collapsible frame structures of this furniture, supporting frames, since it is these structures in this furniture that are the most cumbersome and complicate the process of transportation and storage of transformable upholstered furniture.

A patent is known for utility model RU 95485 U1, А47С 17/00, 07/10/2010, in which a sofa bed is disclosed containing removable soft elements in the form of mattresses, a metal frame including a base, a back hinged to the base and a seat connected to the base and installed with the possibility of horizontal movement relative to it, while the back and seat of the frame are made with supporting surfaces for placing soft elements on them, while removable covers are put on the back and seat on top of the frame and soft elements. The sofa bed is made with the transformation mechanism of the "eurobook" type ("tick-tock"). The presented design has several advantages compared to analogues known from the prior art, as it has a lightweight collapsible design and removable covers, which facilitates its production and operation. It is doubtful whether the sidewalls with removable covers can be rigidly fixed to the metal frame, since changing such a cover requires removing the fasteners from the sidewall (if any) or removing the sidewalls, which spoils the cover material, as well as soft elements under the cover, and reduces the likelihood of reliable and quick docking of engagement elements during their reassembly. These shortcomings reduce the operational and consumer qualities of the sofa bed, reduce its maintainability.

A sofa is known (RF, 170066, А47С 17.04, publ. 10/28/2016), containing a base in the form of a collapsible metal frame, a back connected to the base, a seat connected to the base and mounted with the possibility of horizontal movement relative to it, a transformation mechanism and mounted on the back and the seat are soft elements with removable covers, characterized in that it is equipped with armrests that are removably mounted on the ends of the base by means of hooks fixed to the inside of the armrests from the condition of their joining with the corresponding favoring elements on the bottom and the rear backrest disposed behind the sofa backrest and detachably mounted by means of hooks fixed to the rear ends of the backrest of the conditions for their mating with corresponding elements on the inner side of the armrests in their upper part.

Known sofa bed type "eurobook" (154016, А47С 17/00, publ. 08/10/2015), which is a lever-folding mechanism that contains a pivotally connected bracket, two two-arm levers of the same length, which are connected from the bottom to the lower support level, auxiliary lever and support. As supporting parts of the back and seat, lamellas, or belts, or mesh are used.

A significant drawback of many known solutions is the difficulty in manufacturing and a large number of parts, which leads to an increase in the complexity of replacing them.

The closest to the claimed utility model in terms of the set of essential features and the task to be performed is a technical solution (RF, 95485, А47С 17/00, published on July 10, 2010), adopted as a prototype. The sofa bed contains a metal frame, including a base, a backrest and a seat pivotally connected to the base, connected to the base and installed with the possibility of horizontal movement relative to it, while the back and seat of the frame are equipped with supporting parts for placing soft elements on them, and a sofa bed equipped with removable covers installed on the back and seat on top of the frame and soft elements.

As supporting parts of the back and seat frame used lamellas or belts or mesh.

The disadvantages of the known sofa are: the possibility of skewing the seat supports due to the influence of dynamic load and the possibility of a creak when unfolding during long-term operation.

The technical problem, the solution of which is provided by the implementation of the claimed utility model, consists in eliminating the above disadvantages of the known technical solutions, including the prototype sofa, and in creating, thus, a reliable design with a modern design and enhanced comfort, which has not only an attractive external view, but also providing ease of use and care for soft elements, namely the possibility of quick and high-quality assembly-disassembly of sofa elements without damaging them in case of erenosa or repair.

As a result of solving this technical problem, the technical result is achieved, which consists in improving the usability and assembly of the sofa bed, the reliability and maintainability of its design, as well as in increasing the service life.

The specified technical result is achieved due to the fact that in the known mechanism for transforming a sofa bed containing a prefabricated base, a backrest and a seat pivotally connected to the base, connected to the base and installed with the possibility of horizontal movement relative to it through the transformation mechanism; the back and seat are made of metal and equipped with supporting parts, the welded structures of the left and right supports of the prefabricated base are equipped with plastic stops located in their upper part, and are bolted to a closed loop, with a traverse in front and a back frame between the brackets at the back using antifriction washers.

The seat and back frames are made of profile hot-rolled pipe 30 × 30 × 1.5.

Between the lifting mechanisms for synchronous operation, a synchronizer is installed with the possibility of free access to the linen box.

The mechanism for transforming the sofa bed is made with the possibility of moving the seat and backrest from the sitting position to the lying position according to the “eurobook” type (“tick-tock” or “pantograph”). As such mechanisms, transformation mechanisms of various well-known manufacturers, both domestic and foreign, can be used.

Thus, the sofa transformation mechanism is a spatial structure, which is based on a prefabricated base, a lifting mechanism for moving the seat, seat frame and back frame, rotating around the axes when the structure is decomposed.

The prefabricated base consists of welded support structures - left and right, in the upper part of which there are plastic stops for leveling the berth horizontally and reducing noise (shock) when folding the sofa.

The supports (left and right) are connected in a closed loop in front by a spacer using a bolt connection, and behind the back frame with a bolt connection between the brackets using antifriction washers. This ensures rigidity and reliability of the precast base, and the ability to smoothly move the backrest frame from one to another working position.

The frame of the seat is made of profile hot-rolled pipe 30 × 30 × 1.5.

Along the perimeter through the latent holders lamellas are installed to support the mattress. The lamellas are mortise in the frame.

Lifting mechanisms (left, right) and front supports are installed on the frame. Between the front supports is installed using the bolt connection of the traverse for mounting the front drawer. The mechanisms and supports are adjustable relative to the transverse axis of the seat frame, providing the ability to set dimensions and clearances according to the design documentation. Between the lifting mechanisms for synchronous operation, eliminating jamming, skewing, two synchronizers are installed so that there is no interference for access to the linen box and there is no emphasis on it.

The back frame is made of a profile hot-rolled pipe 30 × 30 × 1.5 in the form of a closed loop. The slats are mounted in the same way as on the seat frame.

The utility model is illustrated by the following drawings:

FIG. 1 - prefabricated base,

FIG. 2 - seat frame,

FIG. 3 - frame assembly,

FIG. 4 - prefabricated base with lifting mechanisms.

The sofa transformation mechanism is a spatial structure based on a prefabricated base (1), a lifting mechanism for moving the seat (2), a seat frame (3) and a back frame (4) that rotates around the axes when the structure is decomposed.

The prefabricated base (1) consists of welded support structures - left (5) and right (6), in the upper part of which there are plastic stops (7) for leveling the berth horizontally and reducing noise (shock) when folding the sofa.

The supports (5, 6) (left and right) are connected into a closed loop in front by a traverse (8) using a bolt connection (9), and behind the back frame (4) using a bolt connection between the brackets (10) using antifriction washers (11 ) This ensures rigidity and reliability of the precast base, and the ability to smoothly move the backrest frame from one to another working position.

The frame of the seat (3) is made of profile hot-rolled pipe 30 × 30 × 1.5.

Along the perimeter through the lathe holders (12), lamellas (13) are installed to support the mattress. The lamellas are mortise in the frame.

Lifting mechanisms (2) (left, right) and front supports are installed on the frame. Between the front supports is installed using the bolt connection of the traverse (8) for fastening the front drawer (not marked). The mechanisms and supports are adjustable relative to the transverse axis of the seat frame (3), providing the ability to set dimensions and clearances according to the design documentation.

The disadvantage of many known mechanisms is that they do not provide a smooth synchronous movement of the seat when unfolding-folding the sofa.

In the claimed design between the lifting mechanisms (2) for synchronous operation, eliminating jamming, skew, two synchronizers are installed (14).

The frame of the backrest (4) is made of a profile hot-rolled pipe 30 × 30 × 1.5 in the form of a closed loop. The slats are installed in the same way as on the seat frame (3).

For ease of transportation, the sofa transformation mechanism is collapsible. With bolted connections, it can be quickly assembled and disassembled if necessary.

All metal structural parts are painted with RAL7035 powder paint.

The transformation mechanism works as follows.

The mechanism is displayed by pulling the front of the sofa, along with half the mattress forward, and the back, which had turned the soft side to the wall, lowers into the vacated seat.

Claims (3)

1. The transformation mechanism of the sofa bed, comprising a prefabricated base, a backrest pivotally connected to the base and a seat connected to the base and mounted with the possibility of horizontal movement relative to it, lifting mechanisms, characterized in that the prefabricated base consists of welded structures of the left and right supports, equipped with plastic stops located in their upper part, bolted to a closed loop, in front with a traverse, and behind with a back frame between brackets using antifreeze friction washers. 2. The transformation mechanism of the sofa bed according to claim 1, characterized in that the seat and back frames are made of profile hot-rolled pipe. 3. The transformation mechanism of the sofa bed according to claim 1, characterized in that two synchronizers are installed between the lifting mechanisms for synchronous operation and the possibility of free access to the linen box.

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