RU2816605C1 - Transformation mechanism for transformable bed - Google Patents

Abstract

FIELD: furniture industry.

SUBSTANCE: invention relates to mechanisms of furniture transformation, and can be used in designs of transformable beds or sofas. Transformation mechanism for a transformable bed includes a first arc-shaped element having a longitudinal groove, and a second arc-shaped element, connected with possibility of mutual longitudinal movement along an arc-shaped trajectory and having means of attachment to parts of the transformable furniture. Second arc-shaped element comprises a longitudinal tenon mating the longitudinal slot of the first arc-shaped element and arranged in it with the possibility of the above mentioned mutual displacement of the first and the second arc-shaped elements.

EFFECT: possibility of folding and unfolding transformable furniture without using hinge joints in the transformation mechanism, which perform the function of the axis of rotation.

4 cl, 13 dwg

Description

[01] Technical field

[02] The invention relates to the furniture industry, namely to mechanisms for transforming furniture, and can be used in the designs of transformable beds or sofas.

[03] State of the art

[04] In standard sofa beds, the sleeping area is usually formed from several soft elements. At the joints of these elements there are protrusions or depressions associated with the design features of the transformable parts, as a rule, the presence of one or more hinge elements necessary for folding and unfolding the specified furniture. Transformable furniture is also used with a solid thin mattress, which is completely bent when folded, which during long-term use it leads to deformation of the folded area when unfolded, that is, unlike conventional beds, the lying surface in transformable furniture is not flat. Regular use of such furniture for sleeping is not comfortable and can lead to health problems in the long term.

[05] To create a full-fledged sleeping place in transformable furniture, it is necessary to use a multi-layer mattress, having a top (first) layer, which is made whole, and a second layer, which is made transversely divided throughout the entire thickness to form at least two adjacent parts, made with the possibility of opening. For example, such a mattress is described in a patent owned by the applicant for invention No. 2789300, 02/01/2023. The design of this mattress eliminates the formation of unevenness in the sleeping area in the folding area.

[06] Thus, there is a need to develop a mechanism for transforming furniture that would ensure the transformation of furniture without using hinge elements in the design, as well as the possibility of folding a multilayer mattress, the design of which is described above.

[07] The closest analogue of the invention is the furniture transformation mechanism described in Chinese patent CN 212788016 U, 03.26.2021. The furniture transformation mechanism contains a first arcuate element containing a longitudinal groove, a second arcuate element made in a shape corresponding to the longitudinal groove of the first arcuate element, connected with the possibility of mutual longitudinal movement along an arcuate path and having means of fastening to parts of the furniture being transformed.

[08] The design of the furniture transformation mechanism according to the closest analogue is intended for small-sized transformable furniture, consisting of several soft parts connected by a hinge element, without the use of a solid mattress. In addition to the above, the disadvantages of the closest analogue include the bulkiness of the design, as well as inconvenience in operation and unsafety for the user, since the lower part of the upper element of the furniture transformation mechanism remains open and contains sharp elements.

[09] Thus, the technical problem to which the invention is aimed is the lack of furniture transformation mechanisms corresponding to the state of the art, in particular, intended for transformable beds or sofas, the design of which uses multi-layer mattresses with a transversely divided layer to ensure a flat sleeping area .

[010] Disclosure of the invention

[011] The technical result of the invention is to provide the ability to fold and unfold transformable furniture without using hinge joints in the transformation mechanism that act as an axis of rotation; providing the ability to fold and unfold a multilayer mattress having a transversely divided layer, used in transformable furniture, for example, a sofa bed, to form a flat sleeping place in the unfolded position, as well as increased compactness in comparison with standard furniture transformation mechanisms.

[012] The specified technical result is achieved in the claimed invention due to the fact that the furniture transformation mechanism includes a first arcuate element having a longitudinal groove, and a second arcuate element connected with the possibility of mutual longitudinal movement along an arcuate path and having means of fastening to parts of the transformed furniture, wherein the second arcuate element contains a longitudinal tenon corresponding to the longitudinal groove of the first arcuate element and placed in it with the possibility of said mutual movement of the first and second arcuate elements.

[013] This result is also achieved in private embodiments of the invention due to the fact that:

[014] - the longitudinal tenon of the second arcuate element and the longitudinal groove of the first arcuate element are made in the shape of a trapezoid;

[015] - the means for fastening the first arcuate element and the second arcuate element to parts of the transformable furniture are made in the form of flat protrusions with mounting holes;

[016] - in the folded position of the furniture transformation mechanism, the strips of the first arcuate element and the second arcuate element are placed in the same plane.

[017] The above-described design of the furniture transformation mechanism ensures the folding and unfolding of transformable furniture, including a multilayer mattress, which includes a transversely divided layer, parts of which are designed to be unlockable. Due to the arcuate elements connected with the possibility of mutual longitudinal movement along an arcuate path, the claimed mechanism for transforming furniture does not contain an axis of rotation in the form of a hinge element, like most standard transformation mechanisms, thereby eliminating the formation of unevenness in the transformation zone (folding and unfolding) of furniture or more parts, and, accordingly, a sleeping place for transformable furniture. Also, the claimed mechanism for transforming furniture has additional advantages in the form of compactness due to the absence of an axis of rotation in the form of a hinge element, as well as the design of elements curved in the shape of an arc and correlated in size, located under the berth.

[018] Brief description of drawings

[019] The invention is illustrated by drawings, where:

- figure 1 shows a general view of the mechanism for transforming furniture at an angle when unfolded,

- figure 2 shows a general view of the mechanism for transforming furniture at an angle when folded,

- figure 3 shows a cross-section of the furniture transformation mechanism when folded,

- figure 4 shows a general view of the sofa bed at an angle in the unfolded state with the mechanism in question,

- figure 5 shows a side view of the sofa bed in the unfolded state with the mechanism in question,

- figure 6 shows a view of the sofa bed at an angle when folded with the mechanism in question,

- figure 7 shows a side view of the sofa bed in a folded state with the mechanism in question,

- figure 8 shows a view of the sofa bed frame at an angle in the unfolded state with the mechanism in question,

- figure 9 shows a side view of the frame of the sofa bed in the unfolded state with the mechanism in question,

- figure 10 shows a view of the sofa bed frame at an angle when folded with the mechanism in question,

- figure 11 shows a side view of the sofa bed frame in a folded state with the mechanism in question,

- figure 12 shows a front view of the sofa bed frame in a folded state with the mechanism in question,

- Figure 13 shows a general view of the mattress used in the above design of the sofa bed, in the unfolded state.

[020] Structural elements are designated in the figures as follows:

1 - second arc-shaped element of the furniture transformation mechanism;

2 - the first arc-shaped element of the furniture transformation mechanism;

3 - longitudinal groove of the first arcuate element (2);

4 - longitudinal tenon of the second arched element (1);

5 - sofa bed frame,

6 - mattress,

7 - supporting part of the frame (5),

8 - fixed frame frame (5),

9 - rotating frame frame (5),

10 - means of fastening the arc-shaped elements (1, 2) of the transformation mechanism to parts of the transformable furniture,

11 - means for fixing the rotating frame (9) in the raised position,

12 - synchronizer of transformation mechanisms,

13 - support lever,

14 - first layer of mattress (6);

15 - second layer of mattress (6);

15a - first part of the second layer (15) of the mattress (6);

15b - second part of the second layer (15) of the mattress (6);

16 - means for attaching the mattress (6) to the fixed (8) and rotating (9) frames of the frame (5) of the sofa bed;

17 - transverse area of separation of the second layer (15) of the mattress (6);

18 - holes for attaching arc-shaped elements (1, 2) of the transformation mechanism to parts of the transformable furniture,

19 screws.

[021] Carrying out the invention

[022] The claimed mechanism for transforming furniture is a structurally unified device, including the first (2) and second (1) flat arched elements (Figs. 1-3). The first arcuate element (2) contains a through longitudinal groove (3). The second arcuate element (1) contains a longitudinal tenon (4), the shape of which can be any (square, rectangular, round, trapezoidal), while corresponding to (coinciding with) the shape of the longitudinal groove (3) of the first arcuate element (2). The connection of the first and second arcuate elements (2, 1) is carried out due to the location of the longitudinal tenon (4) inside the longitudinal groove (3), while the movement of the longitudinal tenon (4) ensures the movement of the second arcuate element (1) along an arcuate path relative to the first arcuate element (2). Figures 1-3 show one of the embodiments of the design of the present invention, when the longitudinal groove (3) and the tenon (4) are made trapezoidal, thereby forming a dovetail type of connection. In the upper parts of both the first and second arcuate elements (2, 1) there are means for fastening (10) of these elements (2, 1) to the transformable furniture in the form. These fastening means can be flat protrusions (bars) in the form of rectangular plates. Holes (18) are designed on the protrusions for attaching arcuate elements (1, 2) to parts of transformable furniture, for example, using screws (19). The furniture transformation mechanism is preferably made of metal.

[023] Figures 4-7, 13 show a multi-layer mattress (6) for transformable furniture, the folding and unfolding of which is ensured by the stated transformation mechanism. Figures 4-12 show an example of transformable furniture in the form of a sofa bed, in which the claimed technical solution and the mentioned mattress design (6) can be used.

[024] The mattress (6) includes a first (top) layer (14), a second (middle) layer (15) and means for attaching the mattress (16) to parts of the convertible furniture. The first layer (14) is a fastening layer and is made in one piece, without cuts or cavities. This layer can be made of an elastic elastic material, in particular, foam material, for example, polyurethane foam (foam rubber). The second layer (15) performs a supporting (load-bearing) function and is attached to the first layer (14) along the entire contact surface of layers (14) and (15). In this case, the second layer (15) is divided into two parts (15a, 15b) by a transverse area (17) in the form of a cut passing through the entire thickness of the second layer

(15) in the junction area of the fixed (8) and rotating (9) frames of the frame (5) of transformable furniture, in particular, a sofa bed. Thus, parts (15a, 15b) of the second layer in the unfolded state are joined to each other along the specified area (17). The thickness of the first (14) and second (15) layers may vary depending on the size of the furniture being transformed. Typically, the second layer (15) is significantly thicker than the first layer (14) to allow the furniture to be folded easily.

[025] The mattress fastening means (16) is a flat base in the form of a lower (third) layer attached to the second layer (15) along its entire lower surface and to the frames (8) and (9) of the frame (5) of the sofa bed . In this case, the fastening means

(16) of the mattress is attached to the frames (8) and (9) of the frame (5) of the sofa bed, for example, by means of screws. This design of the fastening means (16) makes it easy to fold the mattress. However, other embodiments of the fastening means (16) are also possible, for example, it can be made in the form of loops connecting the second layer (15) and the frames (8) and (9) of the frame (5) of the sofa bed.

[026] Each of the specified layers of the mattress (6): the first layer (14), the second layer (15) and the fastening means (third layer) (16), may consist of several sublayers of different materials to form a multi-layer mattress structure. In this case, the mattress (6) may additionally include a layer of outer upholstery made of fabric, leather or other material.

[027] In addition to the mattress (6) and the furniture transformation mechanism corresponding to the present invention, the sofa bed contains a main element in the form of the above-mentioned frame (5). The frame (5) contains a supporting part (7), as well as a fixed frame (8) and at least one rotating (lifting) frame (9) placed on it, which are connected to the supporting part (7). The frame (5) is preferably made of metal (for example, steel) and consists of connected tubular and/or flat and/or corner profiles (elements).

[028] The second arcuate element (1) of the furniture transformation mechanism of the present invention is attached, as a rule, to the rotating (lifting) frame (9), and the first arcuate element (2) is attached to the fixed frame (8) of the bed frame (5). sofa These fastenings can be carried out, for example, using screws (19) through fastening holes (18) provided in the upper parts of the arcuate elements (1, 2) on the fastening means (10) in the form of rectangular strips.

[029] Fixed (8) and rotating (9) frames, as a rule, consist of longitudinal and transverse elements connected into a single structure. When the sofa bed is unfolded, frames (8) and (9) are located side by side in the same horizontal plane to form a single sleeping place.

[030] Said frames (8) and (9) are connected to each other by at least two furniture transformation mechanisms in accordance with the present invention, which provide lifting of the rotating frame (8) relative to the fixed frame (9).

[031] The frame (5) also includes means for securing (11) the rotating frame (7) in the raised position. Said means (11) may have various configurations, widely known to a person skilled in the art. The frame (5) of the sofa bed may also include additional elements inherent in standard transformable frames, in particular, synchronizers (12) of transformation mechanisms (not structural elements of the device of the present invention), support arms (13), springs, hinges, etc. d.

[032] The furniture transformation mechanism functions as follows.

[033] When folding the mattress (6) and, accordingly, the sofa bed, the user lifts the edge of the rotating frame (9) of the sofa bed, and therefore the second arc-shaped element (1) of the transformation mechanism attached to the frame (9), which makes rotational movement in an arc, i.e. moves rotatably relative to the “imaginary” axis, which moves horizontally and vertically. During the rotational movement, the longitudinal tenon (4) of the second arcuate element (1) moves upward, being released from the through longitudinal groove (3) of the first arcuate element (2).

[034] The rotating frame (9) of the sofa bed with the raised second arc-shaped element (1) of the transformation mechanism is fixed by means of fixation (11) in the raised position, forming the back of the sofa. In this case, the frames (8) and (9) open parts (15a) and (15b) of the second layer (15) of the mattress (6), as well as parts of the fastening means (16) of the mattress (6), creating elastic deformation of the first layer (14) .

[035] When folding back the mattress (6) and, accordingly, the sofa bed, that is, folding the furniture transformation mechanism, the user unlocks the fixing means (11) in any way known to the specialist and lowers the rotating frame (9) to a horizontal position, and, therefore, the second arc-shaped element (1) of the transformation mechanism attached to the frame (9). During the rotational movement along the arc, the longitudinal tenon (4) of the second arcuate element (1) moves downwards, that is, inside the longitudinal groove (3) of the first arcuate element (2), such that the fastening means (10) of the first and second arcuate elements (2.1), preferably, are located in a single plane, forming a semicircle. In this case, the mattress (6) returns to the horizontal plane without the formation of creases and depressions in the folding zone.

[036] The implementation of the present invention is illustrated by the example of transformable furniture in the form of a sofa bed with a corresponding multi-layer mattress, one layer of which is transversely divided, but is not limited to them, and can be used in any furniture design and parts thereof where there is a need to ensure transformation without using an axis of rotation in the form of one or more hinged elements.

[037] Thus, the use of the described furniture transformation mechanism allows the folding and unfolding of the transformable furniture and the mattress intended for the corresponding transformable furniture, which increases the comfort of the sleeping place, comparable to the use of a traditional bed with a solid mattress.

Claims (5)

1. A transformation mechanism for a transformable bed, including a first arcuate element (2) having a longitudinal groove (3), and a second arcuate element (1), connected with the possibility of mutual longitudinal movement along an arcuate path and having means of fastening (10) to parts of the transformable bed. furniture, characterized in that the second arcuate element (1) contains a longitudinal tenon (4) corresponding to the longitudinal groove (3) of the first arcuate element (2) and placed in it with the possibility of said mutual movement of the first (2) and second (3) arcuate elements. 2. The transformation mechanism for a transformable bed according to claim 1, characterized in that the longitudinal tenon (4) of the second arcuate element (1) and the longitudinal groove (3) of the first arcuate element (2) are made in the shape of a trapezoid. 3. The transformation mechanism for a transformable bed according to claim 1, characterized in that the means of fastening (10) of the first arcuate element (2) and the second arcuate element (3) to parts of the transformable furniture are made in the form of flat protrusions with mounting holes (18). 4. The transformation mechanism for a transformable bed according to claim 3, characterized in that in the folded position of the furniture transformation mechanism, the strips of the first arcuate element (2) and the second arcuate element (3) are placed in the same plane.