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WO-2026090680-A1 - SOFA BED

WO2026090680A1WO 2026090680 A1WO2026090680 A1WO 2026090680A1WO-2026090680-A1

Abstract

A sofa bed (100) comprising at least one mattress (110, 120) and a backrest (130) configured to be supported on the at least one mattress. A first interface is defined between the backrest (130) and the at least one mattress (110, 120) when the backrest is supported on the at least one mattress. A front portion of the backrest (130) carries additional weight to resist rearward rotation of the backrest in use.

Inventors

  • KING, DAVID
  • SUGO, Ella
  • RECHBERGER, TANYA

Assignees

  • KING FURNITURE AUSTRALIA PTY LTD

Dates

Publication Date
20260507
Application Date
20251104
Priority Date
20241104

Claims (19)

  1. 1. A sofa bed comprising: at least one mattress; and a backrest configured to be supported on the at least one mattress, a first interface being defined between the backrest and the at least one mattress when the backrest is supported on the at least one mattress; wherein a front portion of the backrest carries additional weight to resist rearward rotation of the backrest in use.
  2. 2. The sofa bed of claim 1, comprising: a stiffener removably insertable into the backrest to stiffen the backrest against load applied by a user leaning against the backrest whilst the user is sitting on the at least one mattress; and/or grip fabric at least partially covering the at least one mattress and/or the backrest at the first interface between the backrest and the at least one mattress to resist sliding of the backrest relative to the at least one mattress.
  3. 3. The sofa bed of claim 1 or claim 2, wherein the at least one mattress comprises a first mattress and a second mattress, at least one of the first and second mattresses being configured to be supported on the other, a second interface being defined between the at least one and the other of the mattresses when the at least one mattress is supported on the other.
  4. 4. The sofa bed of claim 3, comprising grip fabric at least partially covering the at least one of the first and second mattresses and/or the other of the mattresses at the second interface therebetween to resist sliding of the at least one of the first and second mattresses relative to the other of the mattresses.
  5. 5. The sofa bed of any one of claims 1 to 4, wherein the backrest has two arm portions connected by a back portion, and wherein the additional weight is carried by at least one of the arm portions.
  6. 6. The sofa bed of claim 5 when directly or indirectly dependent on claim 2 and when comprising the stiffener, wherein the stiffener is configured to resist deformation of the two arm portions relative to the back portion.
  7. 7. The sofa bed of any one of claims 1 to 6, wherein the sofa bed is configurable into any one of: a sofa mode, a deep sofa mode, a daybed mode, and a bed mode.
  8. 8. The sofa bed of claim 7 when directly or indirectly dependent on claim 3, wherein, in the sofa mode, one of the first and second mattresses is supported atop the other, and the backrest is supported on the first and second mattresses.
  9. 9. The sofa bed of claim 7 or claim 8 when directly or indirectly dependent on claim 5, wherein, in the bed mode, the first and second mattresses are positioned side by side and between the two arm portions of the backrest.
  10. 10. The sofa bed of any one of claims 7 to 9, wherein, in the daybed mode, the first and second mattresses are positioned side by side and the backrest is supported on only one of the first and second mattresses.
  11. 11. The sofa bed of any one of claims 1 to 8, wherein the sofa bed is configurable into a dual bed mode in which the first and second mattresses and the backrest are separated from one another.
  12. 12. The sofa bed of any one of claims 1 to 11, wherein the additional weight weighs between about 1kg and about 4kg.
  13. 13. The sofa bed of any one of claims 1 to 12 when directly or indirectly dependent on claim 2 and when comprising the stiffener and when directly or indirectly dependent on claim 5, wherein the stiffener is configured to be inserted into the two arm portions and the back portion.
  14. 14. The sofa bed of any one of claims 1 to 13, wherein the at least one mattress and the backrest have the same length and width.
  15. 15. The sofa bed of claim 14 when directly or indirectly dependent on claim 5, wherein the at least one mattress comprises at least two mattresses and wherein a distance separating the two arm portions of the backrest is equal to twice the width.
  16. 16. The sofa bed of any one of claims 1 to 15 when directly or indirectly dependent on claim 2 and when comprising the stiffener, wherein the stiffener is coupled to the backrest using hook and loop fasteners.
  17. 17. The sofa bed of any one of claims 1 to 16, wherein the stiffener comprises a plurality of interconnectable stiffener sections which, when coupled together, form the stiffener.
  18. 18. The sofa bed of any one of claims 1 to 17 when directly or indirectly dependent on claim 2 and when comprising the stiffener, wherein the stiffener is inserted into a channel in the backrest.
  19. 19. The sofa bed of any one of claims 1 to 18 when directly or indirectly dependent on claim 2 and when comprising the stiffener, wherein, when the stiffener is removed from the backrest, the backrest is configured to be compressed, foldable, and/or rollable to reduce the volume of the backrest.

Description

Sofa Bed Cross-reference [0001] This application is related to Australian Patent Application No. 2024903601, filed 4 November 2024, the contents of which are incorporated herein in their entirety. Technical Field [0002] Embodiments of the present disclosure generally relate to sofas and beds. In particular, embodiments relate to a sofa reconfigurable to into a bed. Background [0003] Most users of sofa beds require them because they have limited space and therefore cannot own both a sofa and a bed, for example, people living in apartments and other small spaces. Ordinary sofa beds are generally binary, either a sofa or a bed, and are cumbersome to reconfigure with the user needing to pull levers, undo clips, and/or adjust mechanical fasteners. [0004] Existing sofa beds usually transition between two fixed configurations, one defining a bed mode and the other a sofa mode. The transition between modes is often somewhat difficult and requires the removal or packing away of cushions or other “sofa” components used in the sofa mode as a prerequisite to be able to transition to the bed mode. Furthermore, the metal frame used to support the sofa bed and allow it to transition between the bed and sofa modes is often bulky and heavy. This means that two people are required to lift and move most sofa beds, due to their weight, and that most sofa beds are hard to navigate into smaller spaces and apartment buildings, due to their fixed configurations. [0005] It is desired to address or ameliorate one or more shortcomings or disadvantages of prior sofa beds, such as difficulty of use, issues with movability/manoeuvrability, or limited configuration, or at least to provide a useful alternative thereto. [0006] Any discussion of documents, acts, materials, devices, articles or the like which has been included in the present specification is not to be taken as an admission that any or all of these matters form part of the prior art base or were common general knowledge in the field relevant to the present disclosure as it existed before the priority date of each of the appended claims. [0007] Throughout this specification the words "comprise" and “include”, and variations such as "comprises", “includes”, "comprising" and “including”, will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps. Summary [0008] Disclosed herein is a sofa bed comprising: at least one mattress; and a backrest configured to be supported on the at least one mattress, a first interface being defined between the backrest and the at least one mattress when the backrest is supported on the at least one mattress; wherein a front portion of the backrest carries additional weight to resist rearward rotation of the backrest in use. [0009] The at least one mattress may comprise a first mattress and a second mattress, at least one of the first and second mattresses may be configured to be supported on the other, a second interface being defined between the at least one and the other of the mattresses when the at least one mattress is supported on the other. [0010] Grip fabric may at least partially cover the at least one of the first and second mattresses and/or the other of the mattresses at the second interface therebetween to resist sliding of the at least one of the first and second mattresses relative to the other of the mattresses. [0011] The backrest may have two arm portions connected by a back portion, and the additional weight may be carried by at least one of the arm portions. The additional weight may weigh between about 1kg and about 4kg. [0012] The sofa bed may be configurable into any one of: a sofa mode, a deep sofa mode, a daybed mode, and a bed mode. In the sofa mode, one of the first and second mattresses is supported atop the other, and the backrest is supported on the first and second mattresses. In the bed mode, the first and second mattresses are positioned side by side and between the two arm portions of the backrest. [0013] In the daybed mode, the first and second mattresses are positioned side by side and the backrest is supported on only one of the first and second mattresses. The sofa bed is further configurable into a dual bed mode, in which the first and second mattresses and the backrest are separated from one another. [0014] The sofa bed may comprise: a stiffener removably insertable into the backrest to stiffen the backrest against load applied by a user leaning against the backrest whilst the user is sitting on the at least one mattress; and/or grip fabric at least partially covering the at least one mattress and/or the backrest at the first interface between the backrest and the at least one mattress to resist sliding of the backrest relative to the at least one mattress. [0015] The stiffener may be configured to resist deformation of the two arm portions relat