A sofa frame and sofa with a foldable backrest.

Abstract

This utility model provides a sofa frame with a foldable backrest, comprising: a frame, a backrest frame, and a rotating bracket connecting the frame and the backrest frame; the rotating bracket includes a first arm and a second arm; the first arm and the second arm are hinged on opposite sides, and fixedly connected to the backrest frame and the frame respectively on opposite sides, so that the backrest frame has a degree of rotational freedom relative to the frame. This utility model also provides a sofa with a foldable backrest, comprising: a sofa frame as described above, an elastic cushion, and a fabric cover; the sofa frame further includes an armrest frame and a base frame disposed on the frame, the elastic cushion is disposed on the backrest frame, the armrest frame, and the seat frame, and the fabric cover covers the elastic cushion.

Description

Technical Field

[0001] This utility model relates to household products, and more particularly to sofas. Background Technology

[0002] Sofa beds feature a folding backrest, allowing the backrest to be laid flat and transforming the sofa bed into a bed-like shape. To facilitate this folding, the hinge point between the backrest and seat cushion is raised to a position closer to the sofa surface, making the hinge point more accessible to the user. Figure 24 This design exposes the hinge points when the sofa back is folded down, which can cause a feeling of inconvenience for the user and reduce their overall experience. Utility Model Content

[0003] The main technical problem to be solved by this utility model is to provide a sofa frame with added armrest folding function.

[0004] To solve the above-mentioned technical problems, this utility model provides a sofa frame with a foldable backrest, including: a frame, a backrest frame, and a rotating bracket connected between the frame and the backrest frame; the rotating bracket includes a first arm and a second arm; the first arm and the second arm are hinged on opposite sides, and their opposite sides are fixedly connected to the backrest frame and the frame, so that the backrest frame has a degree of rotational freedom relative to the frame.

[0005] In a preferred embodiment: a support platform extends horizontally from the side of the first arm facing away from the second arm. The support platform is provided with a clearance hole, and the backrest frame is provided with a connecting hole at the position corresponding to the clearance hole. A connector passes through the clearance hole and is fixedly connected to the connecting hole.

[0006] In a preferred embodiment: the second arm extends a support surface horizontally from the side opposite to the first arm, the support surface being used to abut and fix against the lower surface of the frame.

[0007] In a preferred embodiment: there are two rotating supports, which are arranged on both sides of the frame along the length of the frame.

[0008] This utility model also provides a sofa with a foldable backrest, including: a sofa frame, an elastic cushion, and a fabric cover as described above; the sofa frame further includes an armrest frame and a base frame disposed on the frame, the elastic cushion is disposed on the backrest frame, the armrest frame and the seat frame, and the fabric cover covers the elastic cushion.

[0009] In a preferred embodiment: the backrest frame, armrest frame and seat frame extend inward along the horizontal direction to form a protrusion, and the edge of the fabric cover is fixed with a fastener that engages with the protrusion.

[0010] In a preferred embodiment: the elastic pad includes an elastic module and a balancing pad placed above the elastic module; the elastic module is composed of an array of multiple elastic units.

[0011] In a preferred embodiment: the backrest frame, armrest frame and seat frame are respectively provided with snap-fit ​​members for snapping on the elastic unit.

[0012] In a preferred embodiment: the elastic pad further includes a base plate disposed on the backrest frame, armrest frame and seat frame, and the base plate is provided with a snap-fit ​​element for snapping the elastic unit.

[0013] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0014] This utility model provides a sofa frame with a foldable backrest. The backrest frame and the frame are connected by a rotating bracket. The rotating bracket is located below the upper surface of the elastic pad, so that the rotating bracket is far away from the user. This way, even if the backrest frame is folded, the rotating bracket will not cause any discomfort to the user, thus improving the user experience. Attached Figure Description

[0015] Figure 1 This is a perspective view of the sofa in a preferred embodiment of the present invention;

[0016] Figure 2 This is an exploded view of the sofa frame and elastic module in a preferred embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram showing the connection between the sofa frame and the elastic module in a preferred embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the sofa frame in a preferred embodiment of the present invention;

[0019] Figure 5 This is an exploded view of the sofa frame in a preferred embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the armrest frame in the sofa frame after folding in a preferred embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the backrest frame folded up in a preferred embodiment of the present invention.

[0022] Figure 8 This is a schematic diagram of the backrest frame and armrest frame of the sofa frame after being folded up in a preferred embodiment of the present invention;

[0023] Figures 9-12This is a schematic diagram of the assembly of the backrest frame in a preferred embodiment of the present invention;

[0024] Figures 13-16 This is a schematic diagram of the assembly of the armrest frame and the seat frame in a preferred embodiment of the present invention;

[0025] Figure 17 This is a schematic diagram of the sofa armrests after folding up in a preferred embodiment of the present invention;

[0026] Figure 18 This is a schematic diagram of the sofa backrest folded up in a preferred embodiment of the present invention;

[0027] Figure 19 This is a schematic diagram of the sofa after the backrest and armrests are folded up in a preferred embodiment of the present invention;

[0028] Figure 20 This is a schematic diagram showing the sofa's backrest and armrests not folded up in a preferred embodiment of the present invention;

[0029] Figure 21 This is a cross-sectional view of the sofa in a preferred embodiment of the present invention;

[0030] Figure 22 This is a schematic diagram showing the connection between the fabric cover and the outer frame in a preferred embodiment of the present invention;

[0031] Figure 23 This is a schematic diagram showing another angle of connection between the fabric cover and the outer frame in a preferred embodiment of this utility model;

[0032] Figure 24 This is a schematic diagram of a sofa with a folding backrest in the prior art. Detailed Implementation

[0033] To make the technical solution and features of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific examples. It should be understood that these examples are only for illustrating this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

[0034] refer to Figures 1-23This embodiment provides a sofa with foldable armrests and backrest, including a sofa frame, an elastic cushion 1, and a fabric cover 2. The elastic cushion 1 can be a single, integrated cushion, or it can be composed of an elastic module 21 and a balance cushion 22, as used in this embodiment. The elastic module 21 supports and provides elasticity to the balance cushion 22. In this embodiment, the elastic module 21 is composed of an array of multiple elastic units. Each elastic unit includes a spring and a bracket for fixing the spring. The brackets of adjacent elastic units are connected together, making the elastic units a single unit. Thus, when an elastic unit in one area is compressed and deformed, it pulls on other nearby elastic units, causing them to deform as well. The specific structure of the elastic units and the connection structure between them have been described in detail in previous applications, and this embodiment will not elaborate further.

[0035] In this embodiment, the elastic unit is fixed by a snap-fit ​​connector. The snap-fit ​​connector can be mounted on the sofa frame, or it can be mounted on a base plate, with the base plate fixed to the sofa frame. In this embodiment, the snap-fit ​​connector is frustum-shaped, and the bottom of the bracket has a slot that matches the shape of the snap-fit ​​connector. By placing the snap-fit ​​connector in the slot, the elastic unit and the snap-fit ​​connector can be fixed.

[0036] Since the sofa needs to have a foldable backrest and armrests, the sofa frame includes a main frame 3, an armrest frame 4, a seat frame 5, and a backrest frame 6. The main frame 3 serves as the main frame to support and install the armrest frame 4, seat frame 5, and backrest frame 6. The armrest frame 4 and backrest frame 6 can rotate relative to the seat frame 5.

[0037] To enable the armrest frame 4 to rotate relative to the backrest frame 6, the armrest frame 4 and the seat frame 5 are connected by a hinge frame 7. The hinge frame 7 includes a first link 71 and a second link 72 that are hinged together. The first link 71 and the second link 72 are fixedly connected to the armrest frame 4 and the seat frame 5, respectively, so that the armrest frame 4 has rotational freedom relative to the seat frame 5. The first link 71 and the second link 72 are hinged together by a ratchet and pawl. Specifically, the end of the second link 72 facing the first link 71 has a chamber for the end of the first link 71 to be inserted into. The inner wall of the chamber is provided with a pawl 721, and the end of the first link 71 is provided with a ratchet 711. When the armrest frame 4 is rotated, the first link 71 rotates relative to the second link 72, causing the pawl 721 to engage with different ratchet teeth on the ratchet 711, fixing the armrest frame 4 in different positions, thereby adjusting the angle of the armrest frame 4 relative to the seat frame 5. Furthermore, the hinge position of the first link 71 and the second link 72 is on the sofa frame, that is, the hinge position is lower than the upper surface of the elastic pad 1. In this way, the user will not feel the existence of the hinge position when sitting on the elastic pad 1, that is, there is no foreign object feeling, thereby improving the user experience.

[0038] To accommodate the second link 72, the seat frame 5 has a hollow tube 51 extending along its length, the hollow tube 51 having a chamber for the second link 72 to be inserted and slid. Since the second link 72 also slides within the chamber during the folding process of the armrest frame 4, a guide rail extending along the length of the hollow tube is provided within the chamber to prevent the second link 72 from jamming during sliding.

[0039] Since the first link 71 moves together with the handrail frame 4, it is sufficient to weld the first link 71 to the handrail frame 4 to form a whole.

[0040] In this embodiment, there are two armrest frames 4, which are arranged along the length of the seat frame 5 on both sides. If it is a sofa with an armrest on only one side, the armrest frame 4 can be reduced to one.

[0041] The above describes the folding function of the armrest frame 4. The following describes the folding function of the backrest frame 6. The backrest frame 6 is connected to the frame 3 via a rotating bracket 8. The rotating bracket 8 includes a first arm 81 and a second arm 82. The first arm 81 and the second arm 82 are hinged on opposite sides, and their opposite sides are fixedly connected to the backrest frame 6 and the frame 3, respectively, so that the backrest frame 6 has a degree of rotational freedom relative to the frame 3.

[0042] The first support arm 81 needs to be connected to the backrest frame 6. Therefore, a support platform 811 extends horizontally from the side of the first support arm 81 facing away from the second support arm 82. The support platform 811 has a clearance hole 812. The backrest frame 6 has a connecting hole 61 corresponding to the clearance hole 812. A connector passes through the clearance hole 812 and is fixedly connected to the connecting hole 61. In this embodiment, the connector can be a bolt. The second support arm 82 needs to be fixed to the frame 3. A support surface 821 extends horizontally from the side of the second support arm 82 facing away from the first support arm 81. The support surface 821 is used to abut and fix against the lower surface of the frame 3.

[0043] In addition, in this embodiment, there are two rotating brackets 8, which are arranged on both sides of the frame 3 along the length of the frame 3.

[0044] Finally, to install and secure the fabric cover 2, the backrest frame 6, armrest frame 4, and seat frame 5 each extend inward along the horizontal direction with a protrusion 9. The edge of the fabric cover 2 is fixed with a fastener 21 that engages with the protrusion 9. Specifically, the fastener 21 has a C-shaped opening. When securing the fabric cover 2, the lower end of the fabric cover 2 is pulled below the backrest frame 6, armrest frame 4, and seat frame 5, and then the fabric cover 2 is bent so that it enters the inner side of the backrest frame 6, armrest frame 4, and seat frame 5, thereby securing the C-shaped opening with the protrusion 9.

[0045] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A sofa frame with foldable backrest, characterized in that include: The frame includes a backrest frame and a rotating bracket connecting the frame and the backrest frame. The rotating bracket includes a first arm and a second arm. The first arm and the second arm are hinged on opposite sides and fixedly connected to the backrest frame and the frame respectively on opposite sides, so that the backrest frame has rotational freedom relative to the frame.

2. A sofa frame with foldable backrest according to claim 1, characterized in that: A support platform extends horizontally from the side of the first arm facing away from the second arm. The support platform is provided with a clearance hole, and the backrest frame is provided with a connection hole at the position corresponding to the clearance hole. A connector passes through the clearance hole and is fixedly connected to the connection hole.

3. The sofa frame with foldable backrest according to claim 1, characterized in that: The second arm extends a support surface horizontally from the side opposite to the first arm, and the support surface is used to abut and fix against the lower surface of the frame.

4. The sofa frame with foldable backrest according to claim 1, characterized in that: There are two rotating supports, which are arranged on both sides of the frame along the length of the frame.

5. A sofa with foldable backrest, characterized in that include: The sofa frame, elastic cushion, and fabric cover according to any one of claims 1-4; the sofa frame further includes an armrest frame and a base frame disposed on the frame body, the elastic cushion is disposed on the backrest frame, the armrest frame, and the seat frame, and the fabric cover covers the elastic cushion.

6. A sofa with foldable backrest according to claim 5, characterized in that: The backrest frame, armrest frame, and seat frame extend inward along the horizontal direction to form a protrusion, and the edge of the fabric cover is fixed with a fastener that engages with the protrusion.

7. The sofa of claim 5, wherein: The elastic pad includes an elastic module and a balancing pad placed above the elastic module; the elastic module is composed of an array of multiple elastic units.

8. A sofa with foldable backrest according to claim 7, characterized in that: The backrest frame, armrest frame, and seat frame are each provided with a snap-fit ​​component for engaging the elastic unit.

9. A sofa with foldable backrest according to claim 8, characterized in that: The elastic pad also includes a base plate disposed on the backrest frame, armrest frame and seat frame, and the base plate is provided with a snap-fit ​​element for snapping the elastic unit.

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