High-stiffness sofa front backrest

Abstract

The utility model discloses a sofa front backrest with high stiffness. The sofa front backrest comprises a sofa frame, elastic strips and filling strips, the sofa frame structurally comprises side plates, a rear plate, a cross beam and a bottom plate. The elastic strips comprise the first elastic strip with the two ends arranged on the different side plates and the second elastic strip with the two ends connected with the bottom plate and the cross beam. And the first elastic strip is arranged along the outline of the side plate. And the second elastic strip is arranged below the first elastic strip. The filling strip is arranged on the sofa frame, is positioned between the first elastic strip and the second elastic strip, and is fixedly arranged on the second elastic strip. According to the sofa front backrest with high stiffness, the stiffness of the sofa front backrest is improved by arranging the filling strips on the elastic strips and the shapes of the filling strips.

Description

Technical Field

[0001] The utility model relates to the field of furniture, and particularly to a sofa backrest with high stiffness. Background Art

[0002] The main function of a sofa backrest is to provide back support, making people more comfortable when sitting or lying down. At the same time, the design of the sofa backrest also affects the overall aesthetics and home atmosphere of the sofa. The frame structure of a sofa backrest usually includes a bandage frame, a serpentine spring frame, and a solid wood frame.

[0003] On the Chinese Patent Network, there is a bandage component and its sofa seat frame with a publication number of CN208909455U. The bandage component and its sofa seat frame include a bandage and a connecting piece. At least one connecting piece is provided on the bandage. The connecting piece includes a main body. The main body has opposite ends. One end of the main body is provided with a connecting portion, and the other end of the main body is provided with a positioning portion. The positioning portion cooperates with the bandage. The bandage component and its sofa seat frame are convenient to cooperate with the sofa seat frame. The bandage can be fixed on the sofa seat frame only through the connecting portion, which is convenient for installation and replacement at the same time.

[0004] However, the stiffness of the bandage component and its sofa seat frame is determined by the shape of the sofa seat frame, so that the stiffness provided by the bandage component and its sofa seat frame for the sofa is relatively low, and it is difficult to provide a comfortable physical sensation for users for a long time. Summary of the Utility Model

[0005] In view of this, the utility model provides a sofa backrest with high stiffness to solve the above problems.

[0006] A sofa backrest with high stiffness includes a sofa frame, a plurality of elastic strips arranged on the sofa frame, and a plurality of filling strips arranged between the elastic strips and the sofa frame. The structure of the sofa frame includes two parallel side plates, a rear plate connecting the same sides of different side plates, a cross beam connecting the rear plate and the side plates, and a bottom plate arranged opposite to the cross beam. The elastic strips include a plurality of first elastic strips with both ends arranged on different side plates, and a plurality of second elastic strips with both ends connecting the bottom plate and the cross beam. The first elastic strips are arranged along the contour of the side plates. The second elastic strips are arranged below the first elastic strips. The filling strips are arranged on the sofa frame and between the first elastic strips and the second elastic strips, and the filling strips are fixedly arranged on the second elastic strips.

[0007] Further, the contour of the side plates is trapezoidal, and its hypotenuse is arc-shaped.

[0008] Further, the intervals between the multiple first elastic strips are equal, and the intervals between the multiple second elastic strips are equal.

[0009] Further, the second elastic strip is perpendicular to the first elastic strip.

[0010] Further, the filling strip includes a cambered surface, a plane connected to the cambered surface, and two side surfaces respectively and simultaneously connecting the cambered surface and the plane.

[0011] Further, the plane is attached to and fixed with the second elastic strip, and the cambered surface is attached to the first elastic strip.

[0012] Further, the cambered surface of the filling strip is arranged facing the first elastic strip.

[0013] Compared with the prior art, a sofa front rest with high stiffness provided by the present utility model improves the stiffness by arranging the filling strip on the elastic strip. The filling strip is arranged between the first elastic strip and the second elastic strip. The filling strip acts as a buffer zone through deformation to reduce the pressure on the elastic strip. The elastic strip provided with the filling strip needs to be applied with more force to undergo the same deformation as when the filling strip is not provided, and the stiffness of the sofa front rest is improved. The filling direction of the filling strip is perpendicular to the plane where the elastic strip is located, and the extrusion and contraction direction of the filling strip is perpendicular to the filling strip. The consumption of the extrusion and contraction force of the filling strip during the rebound process is reduced, so that the rebound efficiency is improved, thereby improving the stiffness of the sofa front rest. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic structural diagram of a sofa front rest with high stiffness provided by the present utility model.

[0015] Figure 2 is Figure 1 a schematic structural diagram of the elastic strip of a sofa front rest with high stiffness.

[0016] Figure 3 is Figure 1 a schematic structural diagram of the filling strip of a sofa front rest with high stiffness. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further details the specific embodiments of the present utility model. It should be understood that the description of the embodiments of the present utility model herein does not limit the protection scope of the present utility model.

[0018] Please refer to Figures 1 to 3, which is a schematic structural diagram of a sofa front rest with high stiffness provided by the present utility model. The sofa front rest with high stiffness includes a sofa frame 10, a plurality of elastic strips 20 arranged on the sofa frame 10, and a plurality of filling strips 30 arranged between the elastic strips 20 and the sofa frame 10. It can be imagined that the sofa front rest with high stiffness also includes some other functional modules, such as sponge pads, etc., which are well-known technologies in the art and will not be elaborated here.

[0019] The structure of the sofa frame 10 includes two parallel side plates 11, a rear plate 12 connecting the same sides of different side plates 11, a cross beam 13 connecting the rear plate 12 and the side plates 11, and a bottom plate 14 arranged opposite to the cross beam 13. The sofa frame 10 is used to support the sofa and confirm the shape of the sofa. In this embodiment, the sofa frame 10 uses a frame plate structure, and the contour of the side plate 11 is trapezoidal, and the hypotenuse for arranging the elastic strip 20 is arc-shaped to adapt to the shape of the human back and provide comfort for users. The sofa frame 10 is a common technology and will not be elaborated here.

[0020] A plurality of the elastic strips 20 include a plurality of first elastic strips 21 with both ends arranged on different side plates 11, and a plurality of second elastic strips 22 with both ends connecting the bottom plate 14 and the cross beam 13. The first elastic strips 21 are arranged along the arc-shaped inclined surface of the side plate 11. A plurality of the first elastic strips 21 are arranged at equal intervals, so that the first elastic strips 21 exert uniform force on the user. The second elastic strips 22 are arranged below the first elastic strips 21. A plurality of the second elastic strips 22 are arranged at equal intervals, and the second elastic strips 22 are perpendicular to the first elastic strips 21, so that the second elastic strips 22 and the first elastic strips 21 form a mesh structure and exert uniform supporting force on the user. The elastic strips 20 are used to support the padding arranged on the sofa frame 10. Due to the elasticity of the elastic strips 20 themselves, the resilience of the sofa is increased. The elastic strips 20 are common technologies and will not be elaborated here.

[0021] The filling strip 30 is arranged on the sofa frame 10 and is located between the first elastic strip 21 and the second elastic strip 22. The filling strip 30 is respectively fixed on the second elastic strip 22. The shape of the filling strip 30 is set to match the shape of the side plate 11, and is used to fill the shape gap between the side plate 11 and the elastic strip 20, so that the supporting force of the sofa backrest on the user is consistent with the contour of the side plate 11, improving the comfort of the user. In this embodiment, the contour shape of the filling strip 30 is semi-elliptical. The filling strip 30 includes an arc surface 31, a plane 32 connected to the arc surface 31, and two side surfaces 33 respectively connecting the arc surface 31 and the plane 32 at the same time. The curvature of the arc surface 31 is the same as the curvature of the contour arc of the side plate 11. The arc surface 31 is in contact with the first elastic strip 21, and the plane 32 is in contact with and fixed to the second elastic strip 22. The arc surface 31 of the filling strip 30 is arranged towards the direction where the first elastic strip 21 is located. The extrusion and contraction direction of the filling strip 30 is perpendicular to the elastic strip 20, so that the setting direction of the arc surface 31 is the same as the extrusion and contraction direction of the filling strip 30, reducing the consumption of additional acting force during the rebound process of the filling strip 30, improving the rebound efficiency, and thus increasing the stiffness. The filling strip 30 uses sponge as the material, enabling the filling strip 30 to relieve the pressure on the elastic strip 20 through deformation. The elastic strip 20 provided with the filling strip 30 needs to be applied with more force to produce the same deformation as the elastic strip 20 without the filling strip 30, and the stiffness of the sofa backrest increases.

[0022] When in use, the user leans on the upper part of the sofa frame 10, and the first elastic strip 21 and the second elastic strip 22 apply pressure to each other to provide support and elastic rebound for the sofa. The filling strip 30 reduces the pressure on the first and second elastic strips 21 and 22. The arc surface 31 of the filling strip 30 is arranged towards the first elastic strip 21, reducing the consumption of additional acting force during the rebound process of the filling strip 30, improving the rebound efficiency, and thus increasing the stiffness.

[0023] Compared with the prior art, a sofa front rest with high stiffness provided by the present utility model improves the stiffness by arranging the filling strip 30 on the elastic strip 20. The filling strip 30 is arranged between the first elastic strip 21 and the second elastic strip 22. The filling strip 30 acts as a buffer strip through deformation to reduce the pressure on the elastic strip 20. More force needs to be applied to the elastic strip 20 provided with the filling strip 30 to cause the same deformation as when the filling strip 30 is not provided, so that the stiffness of the sofa front rest is improved. The arc surface 31 of the filling strip 30 is arranged towards the direction where the first elastic strip 21 is located. The extrusion and contraction direction of the filling strip 30 is perpendicular to the filling strip 30. The setting direction of the arc surface 31 is the same as the extrusion and contraction direction of the filling strip 30. The consumption of the extrusion and contraction force of the filling strip 30 during the rebound process is reduced, so that the rebound efficiency is improved, thereby improving the stiffness of the sofa front rest.

[0024] The above are only the preferred embodiments of the present utility model and are not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements or improvements within the spirit of the present utility model are all covered within the scope of the claims of the present utility model.

Claims

1. A sofa front backrest with high stiffness, characterized by: The sofa front backrest with high stiffness includes a sofa frame, a plurality of elastic strips arranged on the sofa frame, and a plurality of filling strips arranged between the elastic strips and the sofa frame. The structure of the sofa frame includes two parallel side panels, a back panel connecting the same side of different side panels, a crossbeam connecting the back panel and the side panels, and a bottom panel arranged relative to the crossbeam. The elastic strips include a plurality of first elastic strips whose two ends are arranged on different side panels, and a plurality of second elastic strips whose two ends are connected to the bottom panel and the crossbeam. The first elastic strips are arranged along the contour of the side panels, and the second elastic strips are arranged below the first elastic strips. The filling strips are arranged on the sofa frame and are located between the first elastic strips and the second elastic strips, and the filling strips are fixedly arranged on the second elastic strips.

2. The sofa front backrest with high stiffness as claimed in claim 1, characterized in that: The side plate has a trapezoidal profile, and its hypotenuse is arranged in an arc shape.

3. The sofa front backrest with high stiffness as claimed in claim 1, characterized in that: A plurality of the first elastic strips are arranged at equal intervals, and a plurality of the second elastic strips are arranged at equal intervals.

4. The sofa front backrest with high stiffness as claimed in claim 1, characterized in that: The second elastic strip is perpendicular to the first elastic strip.

5. The sofa front backrest with high stiffness as claimed in claim 1, characterized in that: The filling strip includes a curved surface, a plane connected to the curved surface, and two side surfaces respectively connected to the curved surface and the plane.

6. The sofa front backrest with high stiffness as claimed in claim 5, characterized in that: The plane is in contact with and fixed to the second elastic strip, and the arc surface is in contact with the first elastic strip.

7. The sofa front backrest with high stiffness as claimed in claim 5, characterized in that: The arc surface of the filling strip is arranged toward the first elastic strip.

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