Convertible sofa bed with a v-truss and articulating mechanism

Abstract

The present disclosure relates to a sofa bed having novel features that allow for greater stability and ease of manufacturing. The sofa bed includes a base assembly, articulating mechanism, V-truss constructed seat assembly, V-truss constructed back assembly, and arm rest assemblies. The articulating mechanism is connected to the base assembly. The seat assembly and back assembly are connected to the articulating mechanism. The arm rest assemblies are connected to the base assembly and enclose the articulating mechanism. The articulating mechanism is configured to move the sofa bed from a sofa configuration to a bed configuration and further includes a pivot point that is positioned between the seat assembly and back assembly for converting the sofa bed to the bed configuration.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of U.S. Provisional Application No. 63 / 781,582, filed Apr. 1, 2025, the contents of which are incorporated herein in their entirety.FIELD OF THE INVENTION

[0002] This application relates generally to convertible furniture, and more particularly to convertible sofa beds that transform between seating and sleeping configurations. Specifically, this invention pertains to a sofa bed incorporating a V-truss design in both the seat and back sections, and with an innovative articulating mechanism for transitioning between the sofa and bed configurations.BACKGROUND OF THE INVENTION

[0003] Sofa beds, also referred to as sleeper sofas, pull-out couches, or convertible sofas, have long been utilized in homes, hotels, and other settings where multifunctional furniture is necessary. These versatile pieces of furniture provide dual utility of serving as a seating option during the day and converting into a bed for sleeping at night. This flexibility is particularly advantageous in environments such as small apartments, guest rooms, boats, yachts, recreational vehicles (RVs), or any space with limited room, allowing a single piece of furniture to serve two essential roles.

[0004] In addition to their widespread use in homes and hotels, sofa beds have found increasing popularity in boats, yachts, and RVs, where space constraints are often more pronounced. In these environments, optimizing the use of available space is critical, as these vehicles or vessels typically offer limited sleeping accommodations. Sofa beds in such settings must be compact and easy to convert. Additionally, the movement of the boat or RV may necessitate more secure or stable articulating mechanisms to prevent damage, unintended deployment during transit, and a secure and stable bed when deployed.

[0005] Conventional sofa beds typically consist of a foldable mattress assembly that is concealed within the sofa's base. The mattress remains hidden beneath the seat cushions during regular use and can be pulled out and unfolded when a bed is needed. While this traditional design has proven effective for providing sleeping accommodations, it presents several challenges. For instance, the articulating mechanism and mattress can be cumbersome to operate, making the conversion process difficult, especially in tight or mobile environments. Furthermore, the comfort of the mattress is often compromised due to the constraints imposed by the foldable assembly, which may not provide the same level of support as a regular bed. Repeated use also subjects the sofa bed to wear and tear, impacting its durability and the ease of transitioning between seating and sleeping configurations.

[0006] Accordingly, there is a need for convertible sofa bed that is able to provide improved comfort, ease of use, and stability in both sofa and bed configurations, while being suitable for use in various environments including homes, hotels, boats, and recreational vehicles, where space constraints and stability requirements are often more pronounced.SUMMARY

[0007] Examples of the present disclosure provides a sofa bed. According to a first aspect of the present disclosure, a sofa bed is provided. The sofa bed includes a base assembly, articulating mechanism, seat assembly, back assembly, arm rest assemblies, and release mechanism. The articulating mechanism is connected to the base assembly. The seat assembly and back assembly are connected to the articulating mechanism. The arm rests are connected to the base assembly and encloses the articulating mechanism. The articulating mechanism is configured to move the sofa bed from a sofa configuration to a bed configuration and further includes a pivot point that is positioned between the seat assembly and back assembly for converting the sofa bed to the bed configuration. A release mechanism engages with the articulating mechanism to allow the back assembly to be rotated back and downward from a rigid substantially upright position as in a sofa configuration, to a horizontal position as in a bed configuration.

[0008] These and other aspects and advantages will become apparent to those of ordinary skill in the art by reading the following detailed description, with reference where appropriate to the accompanying drawings. Further, it should be understood that the foregoing summary is merely illustrative and is not intended to limit in any manner the scope or range of equivalents to which the appended claims are lawfully entitled.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings, which are incorporated in and constitute a part of this specification and in which like reference numerals identify like elements, illustrate examples consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure, and in which:

[0010] FIG. 1 is a perspective view of a sofa bed in a sofa configuration, according to an example of the present disclosure;

[0011] FIG. 2 is a side view of a sofa bed illustrating the movement of certain assemblies and components in transitioning from a sofa configuration to an intermediate configuration, according to an example of the present disclosure;

[0012] FIG. 3 is a side view of a sofa bed in an intermediate configuration between a sofa configuration and a bed configuration, according to an example of the present disclosure;

[0013] FIG. 4 is a side view of a sofa bed in the bed configuration, according to an example of the present disclosure;

[0014] FIG. 5 is a detail view of respective support components of a back assembly and seat assembly of a sofa bed in the bed configuration, according to an example of the present disclosure;

[0015] FIG. 6 is a top schematic view of a sofa bed in the bed configuration, according to an example of the present disclosure;

[0016] FIG. 7A is a top schematic view of a seat frame, according to an example of the present disclosure;

[0017] FIG. 7B is a side profile schematic view of the seat frame with “V” truss, according to an example of the present disclosure;

[0018] FIG. 8A is a top view of the back frame with “V” truss, according to an example of the present disclosure;

[0019] FIG. 8B is a side profile with view of the back frame, according to an example of the present disclosure;

[0020] FIG. 9 is a side view of separate assemblies of a sofa bed and their respective ornamental coverings, according to an example of the present disclosure.

[0021] FIG. 10 is a side view of the frame and linkage assemblies of a sofa bed in the sofa configuration, according to an example of the present disclosure;

[0022] FIG. 11 is a side view of select frame and linkage assemblies of a sofa bed in the sofa configuration, according to an example of the present disclosure;

[0023] FIG. 12 is a detail view of a articulating mechanism and associated components of a sofa bed when in a sofa configuration, according to an example of the present disclosure;

[0024] FIG. 13 is a side view of select frame and linkage assemblies of a sofa bed in a transition between a sofa configuration and an intermediate configuration, according to an example of the present disclosure;

[0025] FIG. 14 is a perspective view providing a detail of the leg assembly of a sofa bed in a take out position, according to an example of the present disclosure;

[0026] FIG. 15 is a side view of select frame and linkage assemblies of a sofa bed in a further transition between a sofa configuration and an intermediate configuration, according to an example of the present disclosure;

[0027] FIG. 16 is a side view of select frame and linkage assemblies of a sofa bed in an intermediate configuration, according to an example of the present disclosure;

[0028] FIG. 17 is a detail view of a articulating mechanism and related components of a sofa bed when in an intermediate configuration, according to an example of the present disclosure;

[0029] FIG. 18 is a detail view of a portion of the articulating mechanism showing positioning of a foot pedal and related components in releasing the back assembly to allow the sofa bed to transition from an intermediate configuration to a bed configuration;

[0030] FIG. 19 is a detail view of select frame and linkage assemblies of a sofa bed when in a bed configuration, according to an example of the present disclosure; and

[0031] FIG. 20 is a detail view of a articulating mechanism and related components of a sofa bed when in a bed configuration, according to an example of the present disclosure.DETAILED DESCRIPTION

[0032] While the present invention is capable of being embodied in various forms, for simplicity and illustrative purposes, the principles of the invention are described by referring to certain embodiments thereof. It is understood, however, that the present disclosure is to be considered as an exemplification of the claimed subject matter and is not intended to limit the appended claims to the specific embodiments illustrated. It will be apparent to one of ordinary skill in the art that the invention is practiced without limitation to these specific details. In other instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the invention. For example, while embodiments herein are described with reference to a sofa bed, it is understood that the apparatus and method of manufacture is implemented similarly with respect to other convertible furniture pieces such as futons, daybeds, Murphy beds, or any seating apparatus that transforms into a sleeping surface.

[0033] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to limit the present disclosure. As used in the present disclosure and the appended claims, the singular forms “a,”“an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It shall also be understood that the terms “and” and “or” used herein is intended to signify and include any or all possible combinations of one or more of the associated listed items. As used herein, the term “if” is understood to mean “when” or “upon” or “in response to a judgment” depending on the context. In the context of the sofa bed, “up” refers to the direction perpendicular to the floor and towards the ceiling, while “down” is the opposite direction, towards the floor. “Forward” is defined as the direction away from the back assembly or cushion towards the front of the sofa bed, typically where a person's feet would be when seated. “Back” is the opposite direction, moving towards the back assembly or cushion, which typically supports a person's back when in a seated position. These directional terms provide a consistent assembly of reference for describing the movement and positioning of various components within the sofa bed mechanism.

[0034] The present disclosure relates to convertible sofa beds. In one or more embodiments, a sofa bed features a articulating mechanism and a V-truss assembly that enables conversion between a secured sofa configuration and a secured bed configuration. This design allows a single piece of furniture to serve dual purposes, offering comfortable seating during the day and a sleeping surface at night. The articulating mechanism incorporates a pivot point that extends between the back assembly and seat assembly when the back assembly rotates into the bed configuration. This design allows users to easily convert the sofa bed without requiring additional space behind the furniture for the back assembly to rotate and thus allowing the back assembly to lay flat with the seat assembly within the existing footprint of the sofa bed. To convert the sofa to a bed, a user simply extends the seat assembly forward away from the sofa bed. This action activates the articulating mechanism, positioning the seat assembly into a bed configuration with leg support. The user then engages a foot pedal to unlock the back assembly, allowing it to rotate smoothly into the bed configuration. This convertible design is particularly well-suited for spaces where multifunctional furniture is essential, such as small apartments, recreational vehicles, or boats.

[0035] The V-truss is a structural element that consists of a V-shaped support structure integrated into each of the back assembly and the seat assembly. This design allows for optimal distribution of forces, particularly important during the conversion between sofa and bed configurations. Each V-truss incorporates one or more support blocks strategically positioned to engage respective support blocks on the V-truss of the other assembly when the sofa is fully extended into the bed configuration. By engaging one another, these support blocks, located on opposing sides of the V-trusses in both the back and seat assemblies, better secure the bed configuration and help to prevent unwanted movement and sagging.

[0036] Turning now to the figures, FIG. 1 shows a sofa bed 10 in a sofa configuration according to an embodiment of the present disclosure. The sofa bed 10 includes a base assembly 20 (not visible), a seat assembly 30, a back assembly 40, a left arm assembly 50, a right arm assembly 60, an articulating mechanism 70 (not visible) operated by a release mechanism 90 in the form of a foot pedal, and a leg assembly 80. These components form the overall structure of the sofa bed 10, with the base assembly 20 providing the overall support. The base assembly 20 may include a plurality of base legs 22 to provide clearance between the floor and a bottom edge of the base assembly and of certain components, such as one or more foot pedals 74. The back assembly 40 and seat assembly 30 forming the seating surfaces in the sofa configuration and the bed surfaces in the bed configuration. In order to provide comfortable and stable seating and bedding surfaces, the seat assembly includes one or more seat cushions 34 set on a seat frame 32, and the back assembly includes on or more back cushions set against a back frame 42. The frames 32 and 42 provide rigid support and stability for the cushioned surfaces, and further provide attachment surfaces allowing for the seat assembly 30 and back assembly 40 to be coupled to other components and mechanisms, including the articulating mechanism 70 and the leg assembly 80. The articulating mechanism 70 couples the seat assembly 30 and the back assembly 40 to the base assembly 20 via a series of linkages and further enables these assemblies to move relative to each other during conversion between sofa and bed configurations. The articulating mechanism 70 operates to ensure that the back assembly 40 is “locked” in an upright position in the sofa configuration and until a user is ready to place the sofa bed 10 into a bed configuration. The arm rest assemblies 50, 60 house the linkages of the articulating mechanism 70 that extend upward from the base, preventing contact between these linkages and the user to allow for safe operation. When the arm rest assemblies are upholstered, they further and provide the aesthetic advantage of ensuring that the linkages of the articulating mechanism 70 are not visible. The leg assembly 80 is attached to the seat assembly 30 and deploys to provide support in the bed configuration.

[0037] The back assembly 40 with back cushion 44 and the seat assembly 30 with seat cushion 34 form a 98-degree angle, providing a comfortable seating posture. The seat assembly 30 with seat cushion 34 is angled 8 degrees off horizontal, offering an ergonomic sitting position. The sofa bed 10 has a height of 20 inches at the front end of the seat cushion 34, measured from the floor to the top of the cushion, away from the back assembly 40. This height ensures proper leg support for most users when seated. Both the back assembly 40 and seat assembly 30 can be constructed using plywood, which offers a good balance of strength, weight, and cost-effectiveness for the sofa bed structure.

[0038] Seat assembly 30 and back assembly 40 each include additional support elements incorporated into their respective frames. Seat assembly 30 includes an additional seat support element 36, a “V” truss, which is incorporated into the rear end of the seat frame 32 that provides additional strength, rigidity, and support to seat assembly 30. Similarly, back assembly 40 includes an additional back support element 46, a “V” truss, which is incorporated into the lower end of the back frame 42 that provides additional strength, rigidity, and support to the back assembly 40. In a preferred embodiment, the additional support elements 36 and 46 are V-truss supports as shown.

[0039] FIG. 2 shows a side view of the sofa bed 10 in a sofa configuration, and illustrates the process by which the sofa bed initiates the transformation from the sofa configuration to the bed configuration. To initiate the conversion process from the sofa configuration to the bed configuration, a user lifts the bottom front edge of the seat frame 32 and pulls it up from position A to position A′, and away from the back assembly 40. As the front edge of the seat frame 32 of seat assembly 30 is pulled away from the back assembly 40, a back pivot point 72 of the articulating mechanism 70 is moved upward and forward from position B to position B′. Lifting of the bottom front edge of the seat assembly 30 and pulling it away from the back assembly also causes operation of the leg mechanism 80, which attached to the bottom of the seat assembly, to deploy a leg assembly 82 that provides support and stability in the intermediate configuration as shown in FIG. 3 and in the bed configuration.

[0040] FIG. 3 shows the sofa bed in an intermediate configuration between the sofa configuration and the bed configuration, in which the front edge of the seat assembly 30 is extended outward and the leg assembly 82 of the leg mechanism 80 is fully deployed in order to provide additional support and stability to the front end of the seat assembly in the extended position. As shown, the leg 82 is extended, providing support for the seat assembly 30, which is now horizontal and extended forward. The back assembly 40 remains locked in an upright position, maintaining its angle relative to the base assembly. As the seat assembly 30 and seat cushion 34 extend from the arm rest assemblies 50, 60 away from the back assembly 40, the length of the exposed seat cushion 34 as shown measures approximately 34.5 inches. This extended position demonstrates an intermediate stage of the conversion process from sofa to bed where the seat has moved forward and leveled out, but the back has not yet been lowered.

[0041] A foot pedal 92 is located on either or both sides of the sofa bed, and allows the user to engage a release mechanism 90 that operates on the articulating mechanism 70 in order to allow the back assembly 40 to be moved so that the sofa bed 10 can be placed into a bed configuration. By depressing either foot pedal 92, the release mechanism 90 operates on the articulating mechanism 70 to disengage linkages that are rigidly aligned or “locked” (as further described herein), allowing the back assembly 40 to easily rotate back and downward to transition the sofa bed into the bed configuration in which the back assembly is horizontal and even with the base assembly 20.

[0042] FIG. 4 shows the sofa bed in the bed configuration. The back assembly 40 with back cushion 44 has rotated down to align flat with the seat assembly 30 and seat cushion 34, providing a substantially continuous flat sleeping surface. The seat assembly 30 and back assembly 40 therefore allow for a flat surface for the user to use as a bed. As shown the width of the bed, measured across the flat surface formed by the aligned back and seat cushions, is approximately 53.5 inches, offering ample space for comfortable sleep. The support block 48 on the back assembly is now engaged with the support block 38 on the seat assembly, securing the two sections together in the bed configuration. The locking effect of this mechanism ensures stability and prevents unwanted movement or separation between the back and seat sections during use as a bed. The support blocks 48 and 38 prevent the back assembly 40 and seat assembly 30 from rotating while in the bed configuration. For example, if a user were to add weight near the pivot point 72, the support blocks 48 and 38 would prevent rotation or dipping of the back assembly 40 and seat assembly 30. Similarly, if a user were to lift the seat assembly 30, the support blocks would prevent rotation of the seat assembly 30 back into sofa configuration. In order to disengage the support blocks 48 and 38, the user would have to lift the back assembly 40 and lock it in the sofa configuration with the foot pedal 92, thereby allowing the seat assembly 30 to be lifted and rotated up to the intermediate configuration and sofa configuration.

[0043] The sofa bed 10 further includes a leg mechanism 20 that is deployed in the bed configuration. The leg mechanism 20 is fully extended and provides support for the seat assembly 30. In one more embodiment, the leg mechanism can extend out of the base assembly 20 while attached to the bottom of the seat assembly 30.

[0044] FIG. 5 shows a detail view of the engagement between the respective support components of a back assembly and seat assembly when in the sofa configuration. The first support block 48 on the back assembly is located on the side of the V-truss 46 nearest the seat assembly frame but offset from the edge of the seat assembly frame by an amount substantially equal to the depth of the second support block 38, thereby ensuring the second support block 38 can properly engage with the first support block 48 when in the bed configuration, as shown. For example, where the depth of the base support block 48 is ¾ inch, the support block 48 is offset substantially ¾ inch from edge. The V-truss 36 can have a 45-degree angle from vertical. The second support block 38 is on 36 and aligned with the edge of the 38 extending out to the 40. In this configuration, the support block 48 of the back assembly exerts pressure on the support block 38 of the seat assembly, effectively preventing the seat assembly 30 from rotating downward. Conversely, the support block 48 is unable to rotate downward unless the back assembly 40 is lifted first. This interlocking mechanism between support blocks 38 and 48 ensures the stability and integrity of the bed surface, preventing unintended movement or collapse during use.

[0045] FIG. 6 shows a top schematic view of the sofa bed in the bed configuration. The locking mechanism comprises two sets of support blocks: support blocks 48 on the back assembly 40 and support blocks 38 on the seat assembly 30. These support blocks are positioned on two sides of the back assembly 40 and seat assembly 30, respectively, to securely lock the assemblies in the bed configuration. This dual-sided locking system ensures even distribution of force and prevents any twisting or misalignment when the sofa is in use as a bed. The strategic placement of these support blocks on both sides enhances the overall stability and structural integrity of the bed configuration, providing a secure and comfortable sleeping surface. This design also helps to maintain the flatness of the bed surface, preventing any sagging or separation between the back and seat sections during use.

[0046] FIG. 7A is a top schematic view of a seat frame 32 of a seat assembly 30, showing the seat V-truss support 36 and seat support blocks 38. As shown, the additional V-truss support 36 is substantially the same width as, and run substantially the entire width of, seat frame 32 such that it provides extra strength and support across the entire width of the frame. Alternatively, the support element may have a smaller width and may only be located along a portion of the width of seat frame 32, such as the middle portion of the frame, which may be preferable where it is desirable to reduce the amount of materials and overall weight of the sofa bed, while still providing additional structural support and rigidity.

[0047] As shown, the additional support element 36 is composed of a single structure that extends along the width of seat frame 32. Alternatively, the seat support element 36 may be composed of multiple segments that are intermittently disposed along the width of the frame, which may be preferable where it is desirable to reduce the amount of materials and overall weight of the sofa bed, while still providing additional structural support and rigidity.

[0048] FIG. 7B is a side profile schematic view of a seat frame 32 of a seat assembly 30, showing a cross-sectional view of the support element 36 having the V-truss structure. As shown, the V-truss support element 36 has a first side 37 disposed near the rear edge of seat frame 32 and a second side 35 connected to the first side 37 at a substantially 90-degree angle in order to form a V-shaped support. The support blocks 38 are attached to the first side 37 where it meets the rear edge of seat frame 32.

[0049] FIG. 8A is a top schematic view of a back frame 42 of a back assembly 40, showing the back support V-truss 46 and back support blocks 48. As shown, the additional V-truss support element 46 is substantially the same width as, and run substantially the entire width of, back frame 42 such that it provides extra strength and support across the entire width of the frame. Alternatively, the support element may have a smaller width and may only be located along a portion of the width of back frame 42, such as the middle portion of the frame, which may be preferable where it is desirable to reduce the amount of materials and overall weight of the sofa bed, while still providing additional structural support and rigidity.

[0050] As shown, the additional support element 46 is composed of a single structure that extends along the width of back frame 42. Alternatively, the back support element 46 may be composed of multiple segments that are intermittently disposed along the width of the frame, which may be preferable where it is desirable to reduce the amount of materials and overall weight of the sofa bed, while still providing additional structural support and rigidity.

[0051] FIG. 8B is a side profile schematic view of a back frame 42 of back assembly 40, showing a cross-sectional view of the support element 46 having the V-truss structure. As shown, the V-truss support element 42 has a first side 47 disposed near the lower edge of back frame 42 and a second side 45 connected to the first side 47 at a substantially 90-degree angle in order to form a V-shaped support. The support blocks 48 are attached to the first side near the lower edge of seat frame 42, but set back from the edge by the width of the corresponding seat support blocks 38.

[0052] FIG. 9 shows components of the sofa bed 10 as separate assemblies, in order to illustrate the ease with which the underlying assembly frames can be manufactured en masse, prior to being finished in a customized manner (e.g., by applying different colors, patterns, or styles via upholstery) before being assembled with mechanism components into a finished sofa bed. As shown, the thicker lines indicated covered surfaces of the assemblies. Base assembly 20 is finished with a cover 29. The cover 29 can be an upholstery that is installed for aesthetic purposes. This design allows for easy installation of the upholstery on a pre-built base assembly 20. By having a separate cover for the base assembly, manufacturers can streamline their production process, building the structural components first and then adding the desired aesthetic finish later. This approach also provides flexibility in terms of fabric choices and styles, allowing for customization without altering the underlying structure of the sofa bed during manufacturing.

[0053] As shown, back assembly 40 includes cushion 44 and cover 49. The cushion 44 and cover 49 can be easily added during manufacturing based on the aesthetic and manufacturing needs, while considering costs. This modular approach allows for a customizable sofa bed. By separating the structural back assembly from its cushioning and upholstery components, manufacturers can offer a range of comfort levels and fabric options without altering the core mechanism. This flexibility enables producers to cater to different market segments and consumer preferences, potentially offering various grades of cushions or a selection of upholstery materials. Additionally, this design facilitates easier maintenance and replacement of worn components, extending the lifespan of the sofa bed.

[0054] As shown, the seat assembly 30 includes cushion 34 and cover 39. Similarly to the back assembly, the cushion 34 and cover 39 can be installed separately onto the seat assembly. The seat cushion 34 can be selected based on desired comfort levels and support characteristics, while the cover 39 can be chosen from a variety of upholstery options to match aesthetic preferences. This method of construction enables manufacturers to efficiently produce the structural components of the seat assembly 30 independently of the cushioning and upholstery elements, streamlining the production process and allowing for easier customization or replacement of these components as needed.

[0055] The first arm rest assembly 50 includes a cover 59 that can be installed separately during manufacturing. The second arm rest assembly 60 may also include a cover 69 that can be installed separately. As noted, this modular approach allows for flexibility in the production process and customization options. The arm rest assemblies can also include cushion materials for comfort that could easily be installed based on manufacturing specifications. By designing the arm rest assemblies with separate structural and aesthetic components, manufacturers can efficiently produce the core structure while offering various upholstery options to suit different styles and price points. The ability to add cushioning materials to the arm rest assemblies further enhances the comfort and versatility of the sofa bed design, allowing for customization based on specific comfort requirements or market preferences.

[0056] Additionally, the shape of the arm rest assemblies can be modified based on manufacturing requirements or design preferences. This flexibility in the arm rest assembly shape allows manufacturers to create different styles of sofa beds using the same core mechanism, catering to diverse aesthetic tastes and market segments. Whether opting for a sleek modern look, a traditional rounded shape, or a more angular contemporary design, the arm assembly can be adapted without altering the fundamental functionality of the sofa bed.

[0057] FIGS. 10-20 illustrate the respective movements and operation of the assemblies and mechanical components of a sofa bed 100, according to an embodiment of the present disclosure. The various cushions and covers of the sofa bed 100 are not shown so as to better illustrate the mechanical operation of certain mechanisms. Sofa bed 100 includes a base assembly 200 having a front edge 230 and rear edge 240, a seat frame 320 of a seat assembly, a back frame 420 of a rear assembly, and a articulating mechanism 700 with a pivot point 720 and foot pedal 920. Sofa bed further includes arm frames 500 that house the linkages of the articulating mechanisms that extend upward from the base, preventing contact between these linkages and the user to allow for safe operation. It is understood that the sofa bed 100 includes a left arm frame and a second arm frame, although the right arm frame is not shown in order to better illustrate the internal arrangement of certain components and the operation of certain mechanisms.

[0058] The sofa bed 100 includes the base assembly 200, multiple sofa legs 220, back assembly 420, seat assembly 320, the articulating mechanism 700, the leg mechanism 800, right and left arm rest assemblies 500, the release mechanism 900, a articulating mechanism pivot point 720, a back V-truss 460, and a seat V-truss 360. The base assembly 200 is a rectangular structure having a top end and a bottom end, where the bottom end is configured to rest on a floor surface and the top end is disposed opposite the bottom end and elevated from the floor surface. The base assembly 200 further comprises a front end 230 extending between the top end and the bottom end, a back end 240 disposed opposite the front end 230 and extending between the top end and the bottom end, a first side end 234 extending between the front end 230 and the back end 240, and a second side end 236 disposed opposite the first side end 234 and extending between the front end 230 and the back end 240. The front end 230, back end 240, first side end 234, and second side end 236 collectively define the perimeter of the base assembly 200, forming a support structure for the sofa bed 100. The sofa legs 220 are located in each corner of the base assembly 20 and lift the base assembly 20 off the floor. The front end 230 includes a front top end 231 located on the top end of the base assembly 20. The angle of the V-truss, for example, around 45 degrees from vertical, is engineered to balance structural integrity with space efficiency. In an embodiment, the V-truss in each assembly extends across the width, providing enhanced rigidity and stability while minimizing weight.

[0059] FIG. 10 provides a perspective view of the frame and linkage assemblies of a sofa bed 100 in the sofa configuration, with the various cushions and covers not shown, and with the right arm assembly not shown, so as to better illustrate the mechanical operation of certain mechanisms. Sofa bed 100 includes a base assembly 200 having a front edge 230 and rear edge 240, a seat frame 320 of a seat assembly, a back frame 420 of a back assembly, and a articulating mechanism 700 with a pivot point 720 and foot pedal 920. Sofa bed further includes a left arm frame 500 that houses the linkages of the articulating mechanism 700 that extend upward from the base, preventing contact between these linkages and the user to allow for safe operation. The sofa bed 100 further includes a right arm frame similar to the left arm frame, although the right arm frame is not shown in order to better illustrate the mechanical operation of certain mechanisms.

[0060] Seat frame 320 includes an additional seat support element 360 attached under the rear end of the seat frame 320 that provides additional strength, rigidity, and support to seat assembly. Similarly, back frame 420 includes an additional back support element 460 attached behind the lower end of the back frame 420 that provides additional strength, rigidity, and support to seat assembly. As shown, the additional support elements 360 and 460 are V-truss supports.

[0061] FIG. 11 shows a side view of the sofa bed 100 in the sofa configuration. In this configuration, the back assembly 420 is in a near upright position, forming the backrest of the sofa. The seat assembly 320 is positioned in a near horizontal position, providing the seating surface. The articulating mechanism 700 is in a compact state, with the back assembly 420 and a first end of the seat assembly 320 positioned closer to the back end 240 than the articulating mechanism pivot point 720. The leg mechanism 800 is retracted and hidden beneath the seat assembly 320. The arm rest assembly 500 is visible on the side, concealing the internal components of the second articulating mechanism. The release mechanism 900 is in its locked position, maintaining the back assembly 420 locked in the upright sofa configuration. In this sofa configuration, the sofa bed 100 appears and functions as a conventional sofa, with no indication of its convertible nature.

[0062] Although only one articulating mechanism is clearly shown, it is understood that the sofa bed 100 has two articulating mechanisms 700, one positioned on each side of the base assembly 200, adjacent to the first side end 234 and the second side end 236, respectively. These articulating mechanisms 700 are mirror images of each other, ensuring balanced support and operation during the conversion process. The placement of the articulating mechanisms 700 on both sides allows for even distribution of weight and stress across the sofa bed structure. The two articulating mechanisms 700, positioned on opposite sides of the base assembly 200, are coupled to each other via one or more connecting members that span the width of the sofa bed, ensuring synchronized movement and even distribution of forces during the conversion process.

[0063] The articulating mechanisms 700 are directly attached to both the seat assembly 320 and the back assembly 420, with the both the seat assembly 320 and the back assembly 420 only being supported by the articulating mechanisms 700. These attachment points allow the articulating mechanisms 700 to control the movement and positioning of the seat assembly 320 and back assembly 420 during the transition between sofa and bed configurations.

[0064] The two articulating mechanisms 700 are strategically housed within the arm rest assemblies 500, one on each side of the sofa bed 100. This enclosure conceals the mechanical components, maintaining the aesthetic appeal of the sofa, while also acting as a protective barrier between the user and the moving parts of the articulating mechanisms 700. By containing the articulating mechanisms 700 within the arm rest assemblies 500, the design significantly reduces the risk of pinch points or other potential injuries that could occur during the conversion process. Users can comfortably rest their arms on the arm rest assemblies 500 without any concern of coming into contact with the internal mechanical components.

[0065] Similarly, the sofa bed has two foot pedal mechanisms 920, one located on each side of the sofa bed 100. These foot pedal mechanisms 920 are positioned on the first side end 234 and the second side end 236, respectively, for easy access to the user from either side of the sofa. The dual foot pedal design allows for convenient operation regardless of the sofa's placement in a room, enhancing user accessibility and ease of conversion from either side of the sofa bed 100. The foot pedal mechanisms 920, located on each side of the sofa bed, are also interconnected via connecting members. These connecting members ensure that engaging either foot pedal will simultaneously activate both mechanisms, allowing for smooth and consistent operation from either side of the sofa. A spring element 950 is connected between each release mechanism 900 and the side of the base assembly 200 to provide an upward force on the foot pedal and to therefore bias the pedal in a substantially horizontal position. The foot pedal mechanisms 920 extend out of the first side end 234 and the second side end 236, respectively. This placement allows users to easily engage the foot pedal mechanisms 920 with a simple downward press of their foot.

[0066] In the sofa position, the leg mechanism 800 is configured so that both ends of the leg assembly 841 are folded upward and adjacent the bottom of the seat assembly frame 320, such that the leg assembly 841 can fit within the base assembly 200 when the sofa bed is in a sofa configuration.

[0067] The V-truss structures and connections to the back assembly 420 and seat assembly 320 are visible and are further discussed below.

[0068] FIG. 12 is a detail view of a articulating mechanism 700 and release mechanism 900 and associated components of a sofa bed when in a sofa configuration. The articulating mechanism comprises a plurality of links 760, 762, 764, 766, 768, 770, 772, 774, 776, 778, 780, and 782 that are coupled and arranged in order to ensure that the base frame 200 supports the back assembly frame 420 and seat assembly frame 320, and to allow for controlled movement of the back assembly and seat assembly through the different configurations. As shown, a take-out linkage section of the articulating mechanism includes front support link 760 and rear support link 762 that are attached to the inside of the base assembly 220 side at four locations via fasteners. Seat meeting link 770 is attached to the side of the seat assembly frame 320 via fasteners, and back meeting link 774 is attached to the side of the back assembly frame via fasteners. The fasteners between the links of the articulating mechanism 70 and the assemblies and frames may be in the form of ¼-20 bolts, ensuring a robust and standardized assembly throughout the structure.

[0069] A front swing link 766 is coupled between a lower end of link 760 and forward end of link 770, and a rear swing link 768 is coupled between an upper end of link 762 and a rear end of link 770. In this arrangement, the front swing link 766 and rear swing link 768 provide physical support for the seat assembly frame 320 while allowing rotational movement between the base assembly 220 and the seat assembly frame 320.

[0070] Support and rotational movement for the rear assembly frame 420 is provided by a rear tilt link 764, a rear back link 776, a bell crank link 772, and a bell crank push link 778. A bottom end of the rear tilt link 764 is coupled to the bottom end of rear support link 762, and an opposite top end of the rear tilt link 764 is coupled to the bottom end of rear back link 776 at 776B. A top end of rear back link 776 is coupled to the back meeting link 774 at 776A. The bell crank link provides direct coupling between the front support link 760 and the rear meeting link 774, with a first end of bell crank link 772 being coupled to the back meeting link at 772A, and the other end of bell crank link being coupled to a top end of front support link 760 at 772B. The bell crank push link 778 is coupled on a first end to the fulcrum of bell crank link 772, and coupled on a second opposite end to rear swing link 768 at 778A.

[0071] In addition the middle of rear tilt link 764 is coupled to the bottom half of front swing link 766 via the combination of rear toggle link 780 and front toggle link 782. A rear end of rear toggle link 780 is coupled to the middle of rear tilt link 764, and an opposing front end of rear toggle link 780 is coupled to a rear end of front toggle link 782. An opposing front end of front toggle link 782 is coupled to the bottom half of front swing link 766. Coordination of movement between the rear toggle link 780 and front toggle link 782 is provided via a spring element 790, which is connected at a first end to rear toggle link at 781 and connected at an opposing second end to front toggle link at 783.

[0072] A release mechanism 900 includes a foot mounting link 930 that is secured to the inside of the base assembly 200 via fasteners. A foot pedal 920 and release link 940 are mounted via respective ends onto the foot meeting link 930 via the squared section of a square tube, permitting the foot pedal 920 and release link 940 to engage in rotational movement around the square tube in a coordinated manner, such that angular displacement of an unmounted end of foot pedal 920 downward (such as through depression of the foot pedal by a user) causes similar angular displacement of an unmounted end of release link 940 upward. A release pin 945 is connected to unmounted end of release link 940.

[0073] In the sofa configuration, the link 770 is positioned such that its first end 770a is angled downward and towards the back of the sofa bed, while its second end 770b is elevated and towards the front. This orientation of link 770 supports the seat frame 320 and thus the seat assembly 300 in a comfortable seating angle. Simultaneously, link 774 being connected to the back frame 420 is configured to have the back assembly 214 oriented in a substantially upright position. In the sofa configuration, the linkage point 772a is positioned between the ends 770a and 770b.

[0074] Once it is decided to convert the sofa bed from the sofa configuration to a bed configuration the user will lift the front edge of seat assembly 320 upward and forward. This action is assisted by the four-bar linkage of the articulating mechanism 700 that includes the front swing link 766 and rear swing link 768, which are both connected to the seat meeting link 770. When this action is started, it can be seen that link 768 begins to move the back meeting link 774 through its connection with links 772 and 778. Also, it can be seen that link 766 through its connection of links 780 and 782 begins to move the rear tilt link 764. Links 780 and 782 act in coordinated fashion because of spring force applied by spring 790.

[0075] FIG. 13 shows a side view of the sofa bed 100 in a leg assembly lift position. This figure illustrates the initial step in converting the sofa bed 100 from its sofa configuration to its bed configuration. To begin the conversion process, the user lifts the front edge of the seat assembly 320. As the seat assembly 320 is raised, the articulating mechanism 700 begins to transition to a intermediate configuration (further described below). The back assembly 420 remains in its upright position during this phase, still secured by the release mechanism 900. The user-friendly design allows for this transformation to be initiated with minimal effort, setting the stage for the subsequent steps in creating a comfortable sleeping surface.

[0076] FIG. 14 shows the sofa bed 100 in the leg assembly lift position with the leg mechanism 800 being exposed. The leg mechanism 800 includes leg 841, a first L-shape connector 842, a linkage arm 843, a coil 844, a catch 840, and a second L-shaped connector 846. The leg assembly 841 has a first end pivotally connected to the seat assembly 320 and a free end configured to contact the floor when the sofa bed is in the bed configuration. The first end of the leg assembly 841 is connected to the first L-shaped connector 842. The catch 840 has a first end pivotally connected to the seat assembly 320 and a free end configured to make contact with the front top end 231 of the base assembly 200 when the seat assembly 320 is lifted and extended away from the back assembly 420. The coil 844 has a first end fixedly connected to the seat assembly 320 and a second end connected to the catch 840 at point 844C, thereby biasing the catch 840 towards the seat assembly 320. The linkage arm 843 is pivotally connected to the first L-shaped connector 842 at pivot connection 844A and to the second L-shaped connector 846 at pivot connection 844B, forming an articulated linkage system that facilitates the controlled movement of the leg mechanism 800 during the sofa-to-bed conversion process. The leg mechanism 800 is symmetrically implemented on both sides of the seat assembly 320 (234 and 236). This dual-sided configuration ensures balanced support and stability. On each side of the seat assembly 320, there is a leg assembly 841, providing a two leg assemblies for the entire sofa bed. These leg assemblies are interconnected by an upper beam and a lower beam, forming a rectangular structure. This rectangular assembly is securely attached to the seat assembly 320 at multiple points, creating a robust and unified leg support system that extends across the width of the sofa bed.

[0077] In the leg assembly lift position, the leg mechanism 800 is configured so that both ends of the leg assembly 841 are generally positioned upward toward the bottom of the seat assembly frame 320 so that the leg assembly 841 can fit within the base assembly 200 when the sofa bed is in a sofa configuration.

[0078] FIG. 15 shows a side view of the sofa bed 100 in a leg assembly extend position. In this configuration, the seat assembly 320 is extended away from the base assembly 200. As the seat assembly 320 moves, it is guided by the articulating mechanism 700, which aligns the seat assembly 320 into a bed configuration and the mechanism pivot point 720 shifts to a bed configuration that will allow the back assembly 420 to rotate to a bed configuration. Simultaneously to the seat assembly 320 extending, the leg mechanism 800, which was initially exposed in the leg assembly lift position, now begins to rotate away from the seat assembly 320. This rotation is a pivoting motion, with the upper end of the leg mechanism 800 remaining attached to the seat assembly 320 while the lower end swings downward and outward towards the floor. As the leg mechanism 800 rotates, it gradually approaches a more vertical orientation. This movement is synchronized with the extension of the seat assembly 320, ensuring that the leg mechanism 800 will be in the correct position to support the weight of the seat assembly 320 and any occupants when fully extended. The leg mechanism 800 is further described below. Throughout this, the back assembly 420 remains in its upright position during this phase, still secured by the release mechanism 900.

[0079] As shown in FIG. 15, as the sofa bed is moved from the sofa configuration to the bed configuration, the seat assembly 320 is lifted and moved away from the back assembly 420, and the catch 840 rotates at a first end (connected to seat assembly 320) so that its second end makes contact with the front top end 231 at the interior part of the base assembly 200. As the seat assembly 320 is further pulled away from the back assembly 420, the catch 840, while maintaining contact with the front top end 231, pivots at its first end. This pivoting action causes the second L-shaped connector 846 to rotate, which in turn pulls the linkage arm 843 towards the base assembly 200. This movement further causes the first L-shaped connector 842 to rotate towards the base assembly 200, which consequently rotates the leg assembly 841 along with the first L-shaped connector 842. As a result, the free end of the leg assembly 841 moves away from the seat assembly 320, allowing it to make move away from the seat assembly 320 and towards the floor.

[0080] As the seat assembly 320 is further pulled away from the back assembly 420 to the bed configuration, the catch 840, while maintaining contact with the front top end 231, continues to pivot at its first end and rotates towards the seat assembly 320. The leg assembly 841 continues to rotate based on the movement of the catch 840. This rotation persists until the seat assembly 320 is in a bed configuration and thus the leg assembly 841 is fully extended, allowing it to make contact with the floor and provide support for the seat assembly 320.

[0081] In one or more embodiments, the leg mechanism 800 can include a leg assembly that extends horizontally out of the base assembly 200 and pivots downward. This alternative configuration provides a simplified support structure for the sofa bed. In this arrangement, the leg assembly is designed to slide or telescope outward from within the base assembly 200 when the sofa bed is being converted to its bed configuration. The horizontal extension allows for a smooth transition from the concealed position within the base assembly to the fully deployed position supporting the seat assembly 320. This horizontally extending leg assembly can be implemented as a single sturdy bar or as a pair of parallel bars on each side of the base assembly 200. The leg assembly is engineered to lock securely in place when fully extended, providing stable support for the seat assembly 320 in the bed configuration. When returning the sofa bed to its sofa configuration, the horizontally extended leg assembly can be easily retracted back into the base assembly 200, maintaining the sleek profile of the sofa.

[0082] FIG. 16 shows a side view of the sofa bed 100 in an intermediate configuration. In this configuration, the leg mechanism 800 is fully extended and in contact with the floor, having completed its rotation to a near-vertical orientation, providing stable support to the seat assembly 320 in its horizontal bed configuration. The seat assembly 320 is in a fully horizontal position, parallel to the floor, in a bed configuration. This horizontal orientation creates a flat surface suitable for sleeping.

[0083] In the intermediate configuration, the articulating mechanism pivot point 720 has fully shifted to a position behind the seat assembly 320, closer to the back end 240 of the base assembly 200. This repositioning of the pivot point 720 is crucial for allowing the back assembly 420 to eventually lower into the bed configuration. This intermediate configuration showcases the sofa bed 100 in a state where the seat portion is ready for use as a bed, but the back portion is still in its sofa configuration.

[0084] During all these positions, the back assembly 420 remains in its upright position, still locked by the release mechanism 900. This design ensures safety by preventing accidental backward movement during seat extension, allows for a controlled step-by-step transformation process, and ensures proper alignment of all articulating mechanism 700 components. It also requires deliberate user interaction to complete the conversion, maintaining structural integrity during intermediate stages. Additionally, this configuration allows the articulating mechanism pivot point 720 to move into its final position behind the seat assembly 320, setting up for the smooth lowering of the back assembly. Overall, this approach ensures that the conversion from sofa to bed is a controlled, safe, and intentional process, requiring user engagement to complete the transformation.

[0085] FIG. 17 shows a side detail view of the articulating mechanism 700 in the intermediate configuration, where the seat assembly has been fully advanced with the leg assembly in contact with the floor. Link 770 has shifted forward and upward, moving the seat assembly away from the back frame 420 and back assembly. Link end 776b has also shifted forward to allow link 774 to rotate down with the back assembly frame 420. This repositioning of the links causes the seat frame 320 and thus the seat assembly to move forward and upward, while the back frame 420 and back assembly remain in a substantially upright position although slightly tilted forward compared to its position in the sofa configuration.

[0086] In the intermediate configuration, the back meeting link 774 and its pivot has been relocated upward and forward as a result of the rotation of link 768 and its associated connections with links 772 and 778. Also, it can be seen that the rear tilt link 764 has been moved forward as a result of the rotation of link 766 and its connections with links 780 and 782. Also as a result of this action, it can be seen that the rear toggle link 780 has been positioned so that a lower control surface edge 780e of the rear toggle link is slightly above release pin 945 on release link 940.

[0087] In addition, the linkage point 772a is positioned between the back assembly and the seat assembly. The back frame 420 is able to rotate about the linkage point 772a towards the seat frame 320 in a compact arc requiring minimal clearance behind the sofa bed and allowing for easy conversion to the bed configuration even when placed close to a wall.

[0088] FIG. 18 shows a side detail view of the release mechanism 900 as the foot pedal 920 is pushed downward into an engaged position to operate the articulating mechanism 700 to release the locked position of the rear assembly. As a user presses down on foot pedal 920 such that it moves from position Y to Y′, release pin 945 on release link 940 rotates upward from position Z to Z′. This action causes pin 945 to engage with lower control surface edge 780e of the rear toggle link 780 to move upward and to cause the front toggle link 782 to pivot up, thereby breaking the “locked” positioning of links 780 and 782, and also causing end 780a (coupled to a mid-section of link 764) to initiate pulling of the link 764 forward and coupled link 776 downward. As a consequence, the back frame 420 is unlocked and allowed to rotate downward and to transition smoothly from its substantially upright position to a horizontal bed configuration.

[0089] FIG. 19 shows a side view of the sofa bed 100 in a bed configuration. In this configuration, the transformation from sofa to bed is complete. The release mechanism 900 has been engaged, releasing the lock that held the back assembly 420 in its upright position. Once released, the back assembly 420 rotates downward, guided by the articulating mechanism 700, until it reaches a horizontal position. As the back assembly 420 lowers, it aligns with the already horizontal seat assembly 320. The two assemblies meet at the articulating mechanism pivot point 720, which now serves as the junction between the back and seat sections of the bed. This positioning ensures that when both assemblies are horizontal, they create a continuous, flat sleeping surface.

[0090] In this configuration, the seat assembly 320 and back assembly 420 are aligned horizontally, creating a single, flat sleeping surface. This continuous plane extends from the front edge of the seat assembly 320 (near the leg mechanism 800) to the top edge of the back assembly 420 (near the back end 240), providing a comfortable and spacious bed area. The arm rest assemblies 500 remain in their original positions on either side of the sofa bed 100. In this bed configuration, the arm rest assemblies 500 now serve as side barriers, adding a sense of enclosure and security to the sleeping area. Additionally, the articulating mechanisms 700 remain fully enclosed within the arm rest assemblies 500. This design feature is crucial for user safety, as it prevents any contact with the moving parts of the mechanism during use. The enclosure of the articulating mechanisms 700 within the arm rest assemblies 500 eliminates potential pinch points or areas where users might accidentally interact with the mechanical components even in the bed configuration.

[0091] The leg mechanism 800 remains fully extended, providing stable support for the seat assembly 320 portion of the bed. In this bed configuration, the sofa bed 100 presents a full-length, horizontal sleeping surface formed by the aligned back assembly 420 and seat assembly 320. The V-truss structures within both assemblies (460 and 360 further described below) lock the sofa bed in a sofa configuration.

[0092] The sofa bed 100 can be converted back into a sofa by first lifting the back assembly 420 into a sofa configuration (FIG. 16), thereby engaging and locking the release mechanism 900. This action secures the back assembly 420 in its upright orientation and remains locked. Once the back assembly 420 is locked in place, the seat assembly 320 can then be lifted and pushed towards the base assembly 200 (FIGS. 15 and 14). This movement causes the leg mechanism 800 to fold and retract underneath the seat assembly 320 as it returns to its original position. As the seat assembly 320 is pushed into the base assembly 200, it simultaneously secures the folded leg mechanism 800 and returns both components to their sofa configuration (FIG. 11). This process effectively reverses the conversion steps, returning the sofa bed 100 to its compact and functional sofa configuration.

[0093] FIG. 20 shows a side detail view of the articulating mechanism 700 in a bed configuration. In this position, the back meeting link 774 and its pivot point 720 have been moved up and forward and as can be seen are now directly above the rear edge of the seat assembly frame 320. This, in turn, allows the back assembly frame 420 with its associated cushion to easily rotate down and directly behind the seat assembly frame 320.

[0094] In this configuration, both the back assembly frame 420 and the seat assembly frame 320 are aligned horizontally to form a flat sleeping surface, with the pivot point 720 providing support and stability to the extended bed structure. Additionally, the support blocks 380 on the seat assembly frame 320 and support blocks 480 on the back assembly frame 420 are now aligned and engaged with each other. This alignment allows the first support block 380 and the second support block 480 to be securely locked together, creating a rigid and stable bed surface that prevents unwanted movement or separation between the seat and back sections when in use as a bed.

[0095] Also, it can be seen that the upper pivot point of the rear tilt link 766 is forward and below its associated connection point with the back meeting link 774 as connected by the rear back link 776. The resulting “arcing” movement provided by this arrangement ensures smooth transitioning between configurations.

[0096] Multiple embodiments are described herein, including the best mode known to the inventors for practicing the claimed invention. Of these, variations of the disclosed embodiments will become apparent to those of ordinary skill in the art upon reading the foregoing disclosure. The inventors expect skilled artisans to employ such variations as appropriate (e.g., altering or combining features or embodiments), and the inventors intend for the invention to be practiced otherwise than as specifically described herein. In addition, while the invention has been described in terms of several preferred embodiments, it should be understood that there are many alterations, permutations, and equivalents that fall within the scope of this invention. It should also be noted that there are alternative ways of implementing both the process and apparatus of the present invention. For example, steps do not necessarily need to occur in the orders shown in the accompanying figures, and is rearranged as appropriate. It is therefore intended that the appended claim includes all such alterations, permutations, and equivalents as fall within the true spirit and scope of the present invention.

Claims

1. A sofa bed comprising:a base assembly;a articulating mechanism connected to the base assembly;a V-trussed seat assembly connected to the articulating mechanism;a V-trussed back assembly connected to the articulating mechanism; andone or more arm rest assemblies connected to the base assembly and enclosing the articulating mechanism; andwherein the articulating mechanism is configured to enable movement of the sofa bed from a sofa configuration to a bed configuration, wherein the articulating mechanism comprises a pivot point that is positioned between the seat assembly and back assembly for converting the sofa bed to the bed configuration.

2. The sofa bed of claim 1, further comprising:a leg mechanism with a leg assembly, wherein the leg mechanism is attached to the bottom of the seat assembly and the leg assembly makes contact with a floor when the seat assembly is extended to an intermediate configuration.

3. The sofa bed of claim 1, further comprising:a foot pedal mechanism connected to the base assembly and the articulating mechanism, wherein the foot pedal mechanism unlocks the back assembly from its upright position when engaged and releases the back assembly to rotate to the bed configuration when disengaged.

4. The sofa bed of claim 3, wherein the foot pedal mechanism is accessible from either side of the base assembly.

5. The sofa bed of claim 1, wherein the pivot point rotates from a sofa configuration to a bed configuration when the seat assembly is extended to an intermediate configuration.

6. The sofa bed of claim 1, wherein the back assembly rotates about the pivot point to transition into the bed configuration, allowing the back assembly to lay flat with the seat assembly within an existing footprint of the sofa bed.

7. The sofa bed of claim 1, further comprising:a first V-truss located on the back assembly, wherein the first V-truss comprises a first support block; anda second V-truss located on the seat assembly, wherein the second V-truss comprises a second support block, wherein the first support block makes contact with the second support block when the sofa bed is in a bed configuration and locks the seat assembly in the bed configuration.

8. The sofa bed of claim 7, wherein the first V-truss extends across the back assembly, the second V-truss extends across the seat assembly, and the first and second support blocks comprises multiple support blocks located opposite each other on the first and second V-truss for locking the seat assembly in the bed configuration.

9. The sofa bed of claim 1, wherein the articulating mechanism comprises two articulating mechanisms located on opposite sides of the base assembly and connected to each other through linkage arms that run parallel to the back assembly and seat assembly.

10. The sofa bed of claim 1, further comprising:a back cushion and back cover on the back assembly;a seat cushion and seat cover on the seat assembly;a base assembly cover on the base assembly; andan arm rest cover on the arm rest assembly.

11. The sofa bed of claim 10, wherein the back assembly, seat assembly base assembly, and arm rest assembly are standardized to promote ease of manufacturing for the producer.

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