Backrest

Abstract

The utility model discloses a backrest. The backrest comprises a backrest body and a lug plate, the backrest body is provided with a plurality of front-back through ports and a plurality of concave first reinforcing grooves, the bottom of the backrest body is provided with a notch, and the left inner side face and the right inner side face of the notch are each provided with at least one insertion piece installation groove extending to the front side. The upper and lower ends of the left and right sides of the backrest body are respectively provided with four groups of front-back through first connecting holes; the front side face and the rear side face of each lug plate are each provided with a plurality of concave second reinforcing grooves. The upper ends and the lower ends of the left side and the right side of each lug plate are each provided with four sets of front-back-through second connecting holes. The two sets of first connecting holes located on one of the left and right sides of the backrest body can be fixedly connected with the two sets of second connecting holes located on one of the left and right sides of the lug plates. According to the backrest disclosed by the utility model, the structural strength can be improved through the through holes and the reinforcing grooves, the backrest can be expanded and extended through the mounting lug plates, and the backrest is suitable for the mounting requirements of seats or sofas with relatively long sizes.

Description

Technical Field

[0001] This utility model relates to the field of daily necessities, and in particular to a backrest. Background Technology

[0002] Conventional chair or sofa backrests are usually made of a single piece, which is not only structurally fragile, but also cannot be flexibly adapted for use with longer chairs or sofas. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a backrest that not only enhances structural strength through various openings and reinforcing grooves but also extends by mounting ear plates, making it suitable for the installation needs of longer chairs or sofas.

[0004] According to one aspect of the present invention, a backrest is provided, comprising:

[0005] The backrest body has multiple through openings and multiple recessed first reinforcing grooves. The bottom of the backrest body has a notch. The left inner side and right inner side of the notch each have at least one insert mounting groove extending to the front. The upper and lower ends of the left and right sides of the backrest body each have four sets of through first connecting holes.

[0006] The ear plate has multiple recessed second reinforcing grooves on both the front and rear sides, and four sets of through second connecting holes are provided at the upper and lower ends of the left and right sides of the ear plate.

[0007] The two sets of first connecting holes located on one side of the backrest body and the two sets of second connecting holes located on one side of the ear plate can be fixedly connected.

[0008] In some embodiments, both the backrest body and the ear plates are made of plastic, wood, or metal. An advantage is that optional materials for the backrest body and ear plates are described.

[0009] In some embodiments, each of the openings is respectively located on the upper, middle, lower, left, and / or right side of the backrest body. The advantage is that the positions where each opening can be located on the backrest body are described.

[0010] In some embodiments, a recessed plate is provided at the upper end of the notch. The advantage of this is that the recessed plate further enhances the structural strength of the backrest body at that location.

[0011] In some embodiments, a portion of the opening extends into the recessed plate. It is advantageous that the arrangement of the lower portion of the opening is further described.

[0012] In some embodiments, the front and rear ends of each group of first connecting holes are respectively located in two first grooves. The advantage of this is that providing each first groove allows each first connecting hole to be situated within a recessed groove, thereby reducing wear.

[0013] In some embodiments, the second reinforcing grooves located on the same side of the ear plate are interconnected. This is advantageous because it further describes the distribution of the second reinforcing grooves on the ear plate.

[0014] In some embodiments, the front and rear ends of each group of second connecting holes are respectively located in two second grooves. The advantage of this is that providing each second groove allows each second connecting hole to be situated within a recessed groove, thereby reducing wear.

[0015] In some embodiments, each group of first connecting holes and each group of second connecting holes has two. It is advantageous that a suitable number of first and second connecting holes in each group is further described.

[0016] In some embodiments, both the backrest body and the ear plates are multiple pieces connected sequentially at intervals. This is advantageous because they can collectively form a longer backrest to meet the installation requirements of longer chairs or sofas. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of a backrest body according to one embodiment of the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram of the rear structure of the backrest body shown.

[0019] Figure 3 This is a schematic diagram of the front structure of the ear plate of a backrest according to one embodiment of the present invention.

[0020] In the figure: backrest body 10, through opening 11, first reinforcing groove 12, notch 13, insert mounting groove 14, first connecting hole 15, concave plate 16, first groove 17, ear plate 20, second reinforcing groove 21, second connecting hole 22, second groove 23. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] like Figure 1-3 As shown, the backrest can be applied to a chair or sofa, and the backrest mainly includes a backrest body 10 and ear plates 20. Preferably, the backrest body 10 and ear plates 20 can be made of suitable materials such as plastic, wood or metal.

[0023] like Figure 1-2 As shown, when the backrest body 10 is installed, the side facing the seat or sofa is the front side, the other side is the rear side, and the other two sides are the left and right sides.

[0024] Multiple through openings 11 are provided on the backrest body 10. The through openings 11 not only save materials but also increase breathability. Each through opening 11 can be set at any suitable position on the upper, middle, lower, left, and right parts of the backrest body 10 without affecting other structures. As shown in the attached figure, through openings 11 are provided in all the above-mentioned parts of the backrest body 10.

[0025] Multiple recessed first reinforcing grooves 12 are provided on the front side of the backrest body 10 to enhance the structural strength of the backrest body 10. Each first reinforcing groove 12 can be set at any suitable position on the backrest body 10 as needed.

[0026] A notch 13 is provided at the bottom of the backrest body 10, and at least one (two are shown in the figure) insert mounting slot 14 extending to the front is provided on the left inner side and right inner side of the notch 13. The bottom of the backrest body 10 can be mounted on a seat or sofa by inserting a piece through each insert mounting slot 14.

[0027] Preferably, a recessed plate 16 is provided at the upper end of the notch 13, and the lower part (one in the figure) of the opening 11 can extend to the recessed plate 16. Thus, by providing the recessed plate 16, the space for the opening 11 is provided, and the structural strength of the backrest body 10 at this point is further improved.

[0028] In addition, four sets (generally two per set) of first connecting holes 15 are provided at the top and bottom ends of the left and right sides of the backrest body 10, and each first connecting hole 15 is used to connect the ear plate 20.

[0029] Preferably, the front and rear ends of each group of first connecting holes 15 are respectively located in two first grooves 17, so a total of eight first grooves 17 are provided on the backrest body 10. The provision of each first groove 17 can make each first connecting hole 15 located in the recessed groove, thereby reducing wear.

[0030] like Figure 3 As shown, the ear plate 20 is roughly rectangular, and multiple recessed second reinforcing grooves 21 are provided on both its front and rear sides. The distribution of the second reinforcing grooves 21 on the front and rear sides of the ear plate 20 is generally consistent, and they can be configured in various shapes such as horizontal or vertical, and the second reinforcing grooves 21 on the same side can be connected.

[0031] Four sets (generally two per set) of second connecting holes 22 are provided at the top and bottom ends of the left and right sides of the ear plate 20. Preferably, the front and rear ends of each set of second connecting holes 22 are located in two second grooves 23, so that eight second grooves 23 are also provided on the ear plate 20.

[0032] In use, the two sets of first connecting holes 15 located on one side of the backrest body 10 can be fixedly connected to the two sets of second connecting holes 22 located on one side of the ear plate 20 using bolts or other connecting parts, thereby connecting the ear plate 20 to the side of the backrest body 10. Alternatively, one ear plate 20 can be fixedly connected to one side or both sides of the backrest body 10 as needed.

[0033] In addition, multiple backrest bodies 10 and multiple ear plates 20 can be set up and connected sequentially at intervals through the above connection method to form a longer backrest to meet the installation requirements of longer chairs or sofas.

[0034] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A backrest, characterized in that: include The backrest body (10) is provided with multiple through openings (11) and multiple recessed first reinforcing grooves (12). The bottom of the backrest body (10) is provided with a notch (13). The left inner side and right inner side of the notch (13) are provided with at least one insert mounting groove (14) extending to the front side. The upper and lower ends of the left and right sides of the backrest body (10) are respectively provided with four sets of through first connecting holes (15). Ear plate (20), with multiple recessed second reinforcing grooves (21) on both the front and rear sides of the ear plate (20), and four sets of front-to-back through second connecting holes (22) respectively on the upper and lower ends of the left and right sides of the ear plate (20). The two sets of first connecting holes (15) located on one side of the backrest body (10) and the two sets of second connecting holes (22) located on one side of the ear plate (20) can be fixedly connected.

2. A backrest according to claim 1, characterized in that: Both the backrest body (10) and the ear plate (20) are made of plastic, wood or metal.

3. A backrest according to claim 1, characterized in that: Each of the aforementioned openings (11) is respectively located on the upper, middle, lower, left and / or right sides of the backrest body (10).

4. A backrest according to claim 1, characterized in that: A recessed plate (16) is provided at the upper end of the notch (13).

5. A backrest according to claim 4, characterized in that: A portion of the opening (11) extends onto the recess (16).

6. A backrest according to claim 1, characterized in that: The front and rear ends of each group of the first connecting holes (15) are located in two first grooves (17).

7. A backrest according to claim 1, characterized in that: The second reinforcing grooves (21) located on the same side of the ear plate (20) are connected.

8. A backrest according to claim 1, characterized in that: The front and rear ends of each group of the second connecting holes (22) are located in two second grooves (23).

9. A backrest according to claim 1, characterized in that: Each group of first connecting holes (15) and each group of second connecting holes (22) has two.

10. A backrest according to claim 1, characterized in that: Both the backrest body (10) and the ear plate (20) have multiple pieces that are connected in sequence at intervals.

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