Backrest and sofa

Abstract

The utility model discloses a backrest and a sofa. The backrest comprises two side plates which are oppositely arranged, and each side plate is provided with a first clamping structure; the connecting rods are arranged in parallel at intervals, each connecting rod is connected between the two side plates, second clamping structures are arranged at the two ends of each connecting rod respectively, and one second clamping structure at one end of each connecting rod is clamped with the first clamping structure of the corresponding side plate; the side plates and the connecting rods are all plastic parts. Compared with the prior art, the side plates and the connecting rods in the backrest are formed in an injection molding mode, compared with the mode that the side plates and the connecting rods are formed in a blow molding mode, the forming efficiency of the side plates and the connecting rods is higher, the subsequent step of processing burrs in the blow molding process is avoided, and the production efficiency of the whole backrest is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to a backrest and a sofa. Background Art

[0002] Sofa is a kind of furniture often used in people's home decoration. Because the outer surface is wrapped with a soft coat, it has a very high degree of comfort and is deeply loved by people. The main frame of the sofa includes a base, a backrest and armrests. Among them, the backrest is made of wood material, which does not meet the current environmental protection requirements. Utility Model Content

[0003] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the utility model, a backrest is provided, comprising:

[0004] Two side panels arranged opposite to each other, each side panel being provided with a first engaging structure;

[0005] A plurality of connecting rods arranged in parallel and spaced apart, each of the connecting rods being connected between the two side plates, and a second clamping structure being respectively provided at both ends of the connecting rod, and a second clamping structure at one end of the connecting rod being clamped with a first clamping structure of a side plate;

[0006] Wherein, the side panels and the connecting rods are both plastic parts.

[0007] In some embodiments, the first engaging structure is a engaging hole, and the second engaging structure is a buckle.

[0008] In some embodiments, a guide block is provided on the hole wall of the clamping hole, and the guide block is gradually inclined toward the center direction of the clamping hole from the inner side to the outer side of the side plate;

[0009] The buckle is provided with a bayonet, and the guide block is clamped in the bayonet.

[0010] In some embodiments, the guide blocks are disposed on the upper side wall and the lower side wall of the clamping hole, the clamping holes are disposed on opposite sides of the buckle, and one guide block is clamped in one clamping hole.

[0011] In some embodiments, the side panels are provided with connecting buckles for hanging elastic members.

[0012] In some embodiments, a slot and a limit block are provided on the connecting buckle, the elastic member is hung in the slot, and the limit block and the elastic member are abutted against each other.

[0013] In some embodiments, a first mounting hole is provided on the side panel, the first mounting hole passes through the inner side and the outer side of the side panel, and the first mounting hole is used to install a mounting structure hung on the sofa base.

[0014] In some embodiments, the side plate is provided with a protrusion at a position where the first mounting hole is provided, and the protrusion protrudes toward the inner side of the side plate.

[0015] In some embodiments, a groove is formed on the outer side of the side plate in an area corresponding to the protrusion.

[0016] Another aspect of the utility model provides a sofa, comprising: a base; the backrest described above, wherein the backrest is installed on the rear side of the base; and armrests, comprising two armrests, wherein the two armrests are respectively installed on the left and right sides of the base.

[0017] In summary, the backrest and sofa provided by the utility model have the following technical effects:

[0018] By setting both the side panels and the connecting rods as plastic parts, the use of wooden materials is avoided, thereby achieving the effect of protecting the environment; at the same time, by setting a first snap-fit ​​structure on the side panels and a second snap-fit ​​structure on the connecting rod, the detachable assembly between the side panels and the connecting rod is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a backrest in an embodiment of the utility model;

[0020] Figure 2 for Figure 1 An exploded schematic diagram of the backrest in FIG.

[0021] Figure 3 for Figure 2 The enlarged schematic diagram of point I in the middle;

[0022] Figure 4 for Figure 1 A side view of the backrest in FIG.

[0023] Figure 5 for Figure 4 Schematic diagram of the cross section along the AA direction;

[0024] Figure 6 for Figure 5 The enlarged schematic diagram of the middle II;

[0025] Figure 7 for Figure 1 A schematic diagram of the structure of the side panel;

[0026] Figure 8 for Figure 7 The enlarged schematic diagram of point III in the middle;

[0027] Fig. 9 for Figure 1 Schematic diagram of the connecting rod structure.

[0028] Figures: 100-backrest, 10-side panel, 11-first locking structure, 12-guide block, 13-connecting buckle, 131-slot, 132-limiting block, 14-first mounting hole, 15-protrusion, 16-groove, 17-second mounting hole, 18-reinforcement rib, 20-connecting rod, 21-second locking structure, 22-bayonet. DETAILED DESCRIPTION

[0029] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0033] See also Figures 1 to 9 The backrest 100 provided in the embodiment of the utility model includes two oppositely arranged side panels 10 and a plurality of connecting rods 20.

[0034] Among them, see Figure 1 and Figure 2 A first engaging structure 11 is provided on each side panel 10, a plurality of connecting rods 20 are arranged in parallel and spaced apart, the connecting rods 20 and the side panels 10 are formed separately, each connecting rod 20 is connected between two side panels 10, and second engaging structures 21 are provided at both ends of the connecting rod 20, and a second engaging structure 21 at one end of the connecting rod 20 is engaged with a first engaging structure 11 of a side panel 10;

[0035] The side panels 10 and the connecting rods 20 are both made of plastic.

[0036] The backrest 100 mentioned above avoids the use of wooden materials by setting both the side panels 10 and the connecting rod 20 as plastic parts, thereby achieving the effect of protecting the environment; at the same time, by setting a first snap-fit ​​structure 11 on the side panel 10 and a second snap-fit ​​structure 21 on the connecting rod 20, the detachable assembly between the side panel 10 and the connecting rod 20 is facilitated.

[0037] The side panels 10 and the connecting rods 20 may be formed by injection molding, extrusion molding or blow molding, which can be selected according to specific needs during production.

[0038] Specifically, the side panel 10 and the connecting rod 20 of this embodiment are formed by injection molding. Compared with the side panel 10 and the connecting rod 20 formed by blow molding, the molding efficiency of the side panel 10 and the connecting rod 20 is higher, and the subsequent step of processing the burrs in blow molding is avoided, so that the production of the entire backrest 100 is more efficient.

[0039] Specifically, see Figure 2 as well as Figures 4 to 9 When the connecting rod 20 and the side plate 10 are installed, the first engaging structure 11 is a locking hole, and the second engaging structure 21 is a buckle; in other embodiments, a buckle can be provided on the side plate 10, and a locking hole can be provided on the connecting rod 20, so that the two can be connected by a snap connection. Figures 5 to 9 In order to ensure the installation stability between the connecting rod 20 and the side plate 10, a guide block 12 is provided on the hole wall of the card hole. The guide block 12 is gradually inclined toward the center direction of the card hole from the inner side to the outer side of the side plate 10. A bayonet 22 is provided on the buckle, and the guide block 12 is clamped in the bayonet 22. In this way, by setting the inclined guide block 12, when the connecting rod 20 is installed on the side plate 10, the connecting rod 20 is inserted from the inner side to the outer side of the side plate 10, and the inclined guide block 12 has a guiding effect on the insertion of the connecting rod 20; further, since the bayonet 22 is provided on the buckle, when the connecting rod 20 is inserted into place, the guide block 12 is clamped in the bayonet 22. Due to the limiting effect of the side wall of the bayonet 22 on the guide block 12, the connecting rod 20 is difficult to be pulled out relative to the side plate 10 at this time, thereby achieving stable installation of the connecting rod 20 on the side plate 10.

[0040] Furthermore, guide blocks 12 are provided on the upper side wall and the lower side wall of the card hole, and card slots 22 are provided on the opposite sides of the buckle. One guide block 12 is clamped in one card slot 22. In this way, the guide blocks 12 in two directions limit the upper and lower positions of the connecting rod 20, further ensuring the installation stability of the connecting rod 20 on the side panel 10.

[0041] See also Figures 1 to 4In one embodiment of the utility model, since the backrest 100 is used for human body to lean on, in order to improve the comfort of leaning, an elastic member is mounted on the backrest 100. In order to facilitate the installation of the elastic member, a connecting buckle 13 is provided on the side panel 10. The connecting buckle 13 is used for hanging the elastic member. Thus, through the setting of the connecting buckle 13, the elastic member is set in a manner parallel to the connecting rod 20 to support the back of the human body.

[0042] The elastic member is installed on the front side of the side plate 10. It can be understood that a plurality of elastic members need to be arranged on the backrest 100, so a plurality of connecting buckles 13 are arranged on each side plate 10 to facilitate the installation of the plurality of elastic members.

[0043] Specifically, see Figure 3 When installing the elastic member, a card slot 131 and a limit block 132 are provided on the connecting buckle 13. The elastic member is hung in the card slot 131, and the limit block 132 and the elastic member are abutted against each other. In this way, after the elastic member is clamped in the card slot 131, it is limited and fixed by the limit block 132 to ensure the installation stability of the elastic member.

[0044] It should be noted that the front side referred to in this embodiment refers to the side facing the user when the backrest 100 is used on a sofa, and the rear side refers to the side away from the user; the inner side refers to the side facing the user along the left and right direction of the user, and the outer side refers to the side away from the user along the left and right direction of the user.

[0045] Among them, see Figure 1 , Figure 2 , Figure 4 as well as Figure 7 The side panel 10 of this embodiment is roughly in the shape of a right triangle, and three connecting rods 20 are connected to a right-angled side so that the side edges of the connecting rods 20 and the side panel 10 have a plane that can be used for wall support; another connecting rod 20 is connected to the end of the other right-angled side away from the right angle, and a connecting buckle 13 is provided on the hypotenuse for installing an elastic member, that is, the hypotenuse is the side facing the user, so that when the backrest 100 is applied to the sofa, the backrest 100 has an inclination, thereby improving the comfort of the human body using the sofa.

[0046] See also Figure 1 , Figure 2 , Figure 4 as well as Figure 7Since the backrest 100 needs to be installed on the sofa base, in order to facilitate the installation of the backrest 100 and the sofa base, a first mounting hole 14 is provided on the side panel 10. The first mounting hole 14 runs through the inner side and the outer side of the side panel 10. The first mounting hole 14 is used to install the mounting structure hung on the sofa base. Therefore, through the setting of the first mounting hole 14, the mounting structure can be easily installed, and the mounting structure and the plug-in slot on the sofa base can be plugged in to quickly realize the installation of the backrest 100 on the sofa base.

[0047] Specifically, when the first mounting hole 14 is set, a protrusion 15 is provided on the side panel 10 at the position where the first mounting hole 14 is set. The protrusion 15 protrudes toward the inner side of the side panel 10. By setting the protrusion 15, the protrusion 15 has a mounting plane in contact with the mounting structure, and has a larger contact area with the mounting structure in surface contact, thereby improving the installation stability of the mounting structure. At the same time, the setting of the protrusion 15 improves the installation strength of the mounting structure on the side panel 10.

[0048] Furthermore, a groove 16 is provided on the outer side of the side panel 10 in an area corresponding to the protrusion 15, that is, part of the side panel 10 protrudes inward to form a protrusion. In this way, the area where the protrusion 15 is formed on the side panel 10 will not be too thick to cause a waste of material; at the same time, the thickness will not be too thick to cause shrinkage and deformation of the material when demolding.

[0049] It can be understood that in order to ensure the structural strength of the entire side panel 10, reinforcing ribs 18 can be set on the inner side of the side panel 10, and reinforcing ribs 18 can also be set in the groove 16 of the side panel 10. The reinforcing ribs 18 can reduce the molding material of the side panel 10 and ensure the structural strength of the side panel 10.

[0050] Some sofas also need to be provided with side ears, so the side panels 10 of this embodiment are further provided with second mounting holes 17 for mounting the side ears through the second mounting holes 17 .

[0051] The backrest 100 is provided with a clamping hole on the backrest 100 and a buckle on the connecting rod 20 to realize the clamping connection between the connecting rod 20 and the side panel 10, and an inclined guide block 12 is provided in the clamping hole to limit the clamping connection of the connecting rod 20 to prevent the connecting rod 20 from being pulled out; a connecting buckle 13 is provided on the side panel 10 to facilitate the rapid installation of the elastic member; a protrusion 15 is provided on the side panel 10, and a first mounting hole 14 is formed on the protrusion 15 to facilitate the installation of a mounting structure at the protrusion 15, so that the entire backrest 100 and the sofa base can be quickly connected through the mounting structure.

[0052] The utility model further provides a sofa in another embodiment, comprising the backrest 100, a base and two armrests.

[0053] The backrest 100 is installed on the rear side of the base; and the two armrests are installed on the left and right sides of the base respectively.

[0054] The sofa has a higher production efficiency than the blow molding method because the backrest 100 is injection molded, that is, the production efficiency of the backrest 100 is improved, thus improving the production efficiency of the entire sofa.

[0055] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A backrest (100), characterized in that: include: Two side panels (10) arranged opposite to each other, wherein the side panels (10) are provided with a first locking structure (11); A plurality of connecting rods (20) arranged in parallel and spaced apart, each of the connecting rods (20) being connected between two of the side plates (10), and second engaging structures (21) being respectively provided at both ends of the connecting rod (20), and one of the second engaging structures (21) at one end of the connecting rod (20) being engaged with the first engaging structure (11) of one of the side plates (10); Wherein, the side plate (10) and the connecting rod (20) are both plastic parts.

2. The backrest (100) according to claim 1, characterized in that: The first engaging structure (11) is a engaging hole, and the second engaging structure (21) is a buckle.

3. The backrest (100) according to claim 2, characterized in that: A guide block (12) is provided on the hole wall of the clamping hole, and the guide block (12) is gradually inclined toward the center direction of the clamping hole from the inner side to the outer side of the side plate (10); The buckle is provided with a bayonet (22), and the guide block (12) is clamped in the bayonet (22).

4. The backrest (100) according to claim 3, characterized in that: The guide blocks (12) are provided on the upper side wall and the lower side wall of the clamping hole, the clamping holes (22) are provided on the opposite sides of the clamping buckle, and one guide block (12) is clamped in one clamping hole (22).

5. The backrest (100) according to any one of claims 1 to 4, characterized in that: The side plate (10) is provided with a connecting buckle (13), and the connecting buckle (13) is used for hanging the elastic member.

6. The backrest (100) according to claim 5, characterized in that: The connecting buckle (13) is provided with a clamping slot (131) and a limiting block (132); the elastic member is hung in the clamping slot (131); and the limiting block (132) and the elastic member are in abutment with each other.

7. The backrest (100) according to any one of claims 1 to 4, characterized in that: The side panel (10) is provided with a first mounting hole (14), the first mounting hole (14) passes through the inner side and the outer side of the side panel (10), and the first mounting hole (14) is used to install a mounting structure hung on the sofa base.

8. The backrest (100) according to claim 7, characterized in that: The side plate (10) is provided with a protrusion (15) at a position where the first mounting hole (14) is provided, and the protrusion (15) protrudes toward the inner side of the side plate (10).

9. The backrest (100) according to claim 8, characterized in that: A groove (16) is formed on the outer side of the side plate (10) in an area corresponding to the protrusion (15).

10. A sofa, characterized in that include: Base; The backrest (100) according to any one of claims 1 to 9, wherein the backrest (100) is mounted on the rear side of the base; The armrests include two armrests, which are respectively installed on the left and right sides of the base.

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