Corner Sofa

Abstract

The present invention discloses a corner sofa, including a backrest assembly and a base assembly, wherein the backrest assembly includes a backrest board and a backrest connecting structure, wherein the backrest connecting structure includes a crossbeam, a longitudinal beam vertically connected to the crossbeam, and two side panels respectively connected to the two ends of the crossbeam, wherein the crossbeam and the longitudinal beam are metal parts, and the side panel is an integrally formed injection molded part; the longitudinal beam, the rear side of the side panel and the backrest board are all provided with backrest mounting holes, and the screw and nut assembly connects the backrest board and the backrest connecting structure together through the backrest mounting holes; the side panel is also provided with a plug-in component for connecting the base assembly. In the corner sofa of the present invention, the backrest board and the backrest connecting structure, and the backrest connecting structure and the base assembly are all detachably connected, so that the corner sofa is simple to assemble and convenient to maintain. In addition, the crossbeam and the longitudinal beam in the backrest connecting structure are metal parts, and the side panel is an injection molded part, which reduces the cost and weight and facilitates transportation while ensuring a certain supporting strength.

Description

Technical Field

[0001] The invention relates to the field of sofas, in particular to a corner sofa. Background Art

[0002] Corner sofas are an important part of people's home life. They are usually placed in the corners or corners to make the interior space look beautiful. There are many ways to combine corner sofas. The most common ones are single-seat, double-seat, chaise longue and single chair. They can be combined at will according to the size of the location.

[0003] The backrest and base of the existing corner sofa are usually formed in one piece, and the backrest and base cannot be disassembled. The sofa is usually large and heavy, which brings a lot of inconvenience to the handling of the corner sofa and increases the transportation cost. In addition, the backrest and base of the existing corner sofa are difficult to assemble, costly, labor-intensive, and difficult to repair, which has great limitations. Summary of the invention

[0004] In order to overcome the defects of the prior art described above, the present invention provides a corner sofa.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] The present invention provides a corner sofa, comprising a backrest assembly and a base assembly, wherein:

[0007] The backrest assembly includes a backrest plate and a backrest connection structure, the backrest connection structure includes a crossbeam, a longitudinal beam vertically connected to the crossbeam, and two side panels respectively connected to both ends of the crossbeam, the crossbeam and the longitudinal beam are both metal parts, and the side panels are integrally formed injection molded parts;

[0008] The longitudinal beam, the rear side of the side plate and the backrest plate are all provided with backrest mounting holes, and the screw and nut assembly connects the backrest plate and the backrest connecting structure together through the backrest mounting holes;

[0009] A plug-in component for connecting to a base assembly is arranged on the inner side of the lower end of the side plate.

[0010] The corner sofa of the present invention has a detachable connection between the backrest board and the backrest connecting structure, and between the backrest connecting structure and the base assembly, so that the corner sofa is easy to assemble and convenient to maintain. In addition, the crossbeam and the longitudinal beam in the backrest connecting structure are metal parts, and the side panels are injection molded parts, which reduce the cost and weight while ensuring a certain support strength, and are convenient for transportation.

[0011] Further, the base assembly includes two symmetrically arranged first support members, second support members respectively connected to two ends opposite to the two first support members, and a support beam having one end connected to the second support member and the other end connected to two ends opposite to the two first support members, wherein:

[0012] The first support member, the second support member and the support beam are all made by blow molding;

[0013] The two first supporting members and the second supporting member together form a fan-shaped supporting frame;

[0014] Insert strips for matching with the plug-in connector are respectively provided at both ends of the first supporting member.

[0015] Thus, the support frame is formed by connecting the first support member, the second support member and the support beam, which is simple to assemble and convenient to repair and replace. In addition, the first support member, the second support member and the support beam are all made by blow molding, which reduces the cost and weight while ensuring a certain support strength, and is convenient for transportation.

[0016] Furthermore, the plug connector includes a guide rail and a clamping spring sheet, the clamping spring sheet is composed of an n-shaped portion and a bent portion, the n-shaped portion includes an inner extension end and an outer extension end, the bent portion is arranged on the outer extension end of the n-shaped portion, and one end of the guide rail extends into the inner cavity of the n-shaped portion;

[0017] The inserting strip is provided with a clamping hole which is clamped with the bent portion of the pressing spring sheet.

[0018] Therefore, by setting up a plug-in connector, a detachable connection between the backrest connection structure and the base assembly can be achieved. When the insertion strip on the base assembly is inserted into the guide rail, the bent portion on the clamping spring can be engaged with the snap-in hole on the insertion strip, thereby achieving a firm connection between the two.

[0019] Furthermore, the backrest assembly further comprises a plurality of first springs, wherein:

[0020] The crossbeam is provided with a plurality of hook mounting holes, which are arranged at intervals along the length direction of the crossbeam; a first hook is arranged in each of the hook mounting holes;

[0021] A second hook is provided at the front upper end of the backrest plate corresponding to the first hook;

[0022] One end of the first spring is hung on the first hook of the crossbeam, and the other end is hung on the second hook corresponding to the backrest plate.

[0023] Further, the first hook comprises a hook body and a T-shaped protrusion, the hook body is provided with a spring receiving groove, the T-shaped protrusion passes through the hook mounting hole and is fixed by clamping, an arc structure is provided between the hook body and the T-shaped protrusion, and the hook mounting hole is provided with an arc hole matching the arc structure; one end of the first spring is hung in the spring receiving groove;

[0024] The second hook is blow-molded integrally with the backrest plate.

[0025] Further, the first support member is in an arc shape, and the two first support members constitute the rear arc frame of the support frame; the second support member includes a horizontal portion and inclined portions symmetrically arranged on both sides of the horizontal portion, the horizontal portion constitutes the front frame of the support frame, and the two inclined portions respectively constitute the left and right side frames of the support frame;

[0026] Two opposite ends of the two first support members are respectively connected to one end of the two inclined parts, one end of the support beam is connected to two opposite ends of the two first support members, and the other end of the support beam is connected to the horizontal part.

[0027] Furthermore, the base assembly further comprises a plurality of second springs, wherein:

[0028] A plurality of third hooks are arranged at intervals on the upper end of the first support member and the upper end of the horizontal part of the second support member, and the third hooks on the first support member are arranged correspondingly to the third hooks on the second support member; one end of the second spring is suspended on the third hook of the first support member, and the other end is suspended on the corresponding third hook on the horizontal part of the second support member.

[0029] Furthermore, the third hook is an injection-molded part, and is blow-molded integrally with the first support member and the second support member.

[0030] Furthermore, a plurality of anti-slip protrusions are arranged at intervals along the length direction of the lower end of the crossbeam.

[0031] Therefore, by arranging a plurality of anti-dropping protrusions at the bottom end of the cross beam, when the sofa cover is hung on the bottom end of the cross beam, the anti-dropping protrusions can prevent the sofa cover from dropping off.

[0032] Furthermore, the left and right sides of the upper end of the backrest plate are provided with anti-flipping deformation structures for limiting the side plates, and the lower end of the backrest plate is provided with a tightening hanging bar, wherein:

[0033] The anti-overturning deformation structure includes a wedge-shaped concave portion and a wedge-shaped convex portion, the upper end of the side plate is placed in the wedge-shaped concave portion, and the side surface of the side plate abuts against the wedge-shaped convex portion;

[0034] An anti-falling strip with a water drop-shaped cross section is arranged at the end of the tightening hanging strip.

[0035] Therefore, by setting up an anti-flipping deformation structure, the connection stability between the backrest plate and the side plate can be improved; by setting up a tightening hanging bar, it can be used to hang the sofa cover, and the anti-falling strip on the tightening hanging bar can effectively prevent the sofa cover from falling off.

[0036] In summary, the corner sofa of the present invention has the following beneficial effects:

[0037] (1) The corner sofa of the present invention has detachable connections between the backrest board and the backrest connecting structure, and between the backrest connecting structure and the base assembly, so that the corner sofa is easy to assemble and convenient to maintain. In addition, the crossbeam and longitudinal beam in the backrest connecting structure are metal parts, and the side panels in the connecting structure are injection molded parts, which reduce the cost and weight while ensuring a certain support strength, and facilitate transportation.

[0038] (2) The corner sofa of the present invention has a support frame formed by connecting a first support member, a second support member and a support beam, which is simple to assemble and convenient to repair and replace. In addition, the first support member, the second support member and the support beam are all made by blow molding, which reduces the cost and weight while ensuring a certain support strength, and is convenient for transportation.

[0039] (3) The corner sofa of the present invention can realize a detachable connection between the backrest connection structure and the base assembly by providing a plug-in connector. When the plug-in strip on the base assembly is inserted into the guide rail, the bent portion on the clamping spring can be engaged with the engaging hole on the plug-in strip, thereby realizing a firm connection between the two.

[0040] (4) The corner sofa of the present invention has a plurality of anti-dropping protrusions disposed at the bottom end of the cross beam. When the sofa cover is hung on the bottom end of the cross beam, the anti-dropping protrusions can prevent the sofa cover from dropping off.

[0041] (5) The corner sofa of the present invention can improve the connection stability between the backrest plate and the side plate by providing an anti-overturning deformation structure; and can be used to hang the sofa cover by providing a tightening hanging bar, and the anti-falling strip on the tightening hanging bar can effectively prevent the sofa cover from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a corner sofa of the present invention;

[0043] Figure 2 It is a structural schematic diagram of the backrest assembly in the corner sofa of the present invention;

[0044] Figure 3 It is a schematic structural diagram of a backrest plate in a backrest assembly of the present invention;

[0045] Figure 4 for Figure 3 A partial enlarged view of the middle A part;

[0046] Figure 5 It is a structural schematic diagram of the backrest connection structure in the backrest assembly of the present invention;

[0047] Figure 6 It is a structural schematic diagram of another perspective of the backrest connection structure in the backrest assembly of the present invention;

[0048] Figure 7 It is a structural schematic diagram of the side plate in the backrest connection structure of the present invention;

[0049] Figure 8 It is a structural schematic diagram of the connector in the side panel of the present invention;

[0050] Fig. 9 This is a schematic diagram of the structure of the side panel of the present invention after the connector is hidden;

[0051] Fig.10 It is a structural schematic diagram of a longitudinal beam in a backrest connection structure of the present invention;

[0052] Fig.11 It is a structural schematic diagram of a crossbeam in the backrest connection structure of the present invention;

[0053] Fig.12 It is a structural schematic diagram of the first hook in the backrest connection structure of the present invention;

[0054] Fig.13 It is a structural schematic diagram of a base assembly in a corner sofa of the present invention;

[0055] Fig.14 It is a structural schematic diagram of the base assembly in the corner sofa of the present invention from another perspective;

[0056] Fig.15 It is a structural schematic diagram of the first supporting member in the base assembly of the present invention;

[0057] Fig.16 It is a structural schematic diagram of the first supporting member in the base assembly of the present invention from another perspective;

[0058] Fig.17 It is a schematic structural diagram of the second supporting member in the base assembly of the present invention;

[0059] Fig.18 It is a structural schematic diagram of the second supporting member in the base assembly of the present invention from another perspective;

[0060] Fig.19 It is a schematic diagram of the structure of the support beam in the base assembly of the present invention.

[0061] The meanings of the reference numerals are as follows:

[0062] 1. Backrest assembly; 11. Backrest plate; 111. Second hook; 112. Hanging bar; 1121. Anti-slip bar; 1131. Wedge-shaped concave portion; 1132. Wedge-shaped convex portion; 114. Strengthening blind hole; 115. Hanging mounting hole; 12. Backrest connection structure; 121. Crossbeam; 1211. Hook mounting hole; 12111. Arc hole; 1212. Anti-slip protrusion; 122. Longitudinal beam; 123. Side plate; 13. Backrest mounting hole; 14. Connector; 141. Guide rail; 142. Pressing spring; 1421. N-shaped portion; 1422. Bending portion; 15. First spring; 16. First hook; 161. Hook body; 1611. Spring receiving groove; 162. T-shaped protrusion; 163. Arc structure; 17. First mounting hole; 18. Second mounting hole; 19. Third mounting hole; 2. Base assembly; 21. First support member; 22. Second support member; 221. Horizontal portion; 222. Inclined portion; 23. Support beam; 24. Insert strip; 241. Snap-in hole; 25. Second spring; 26. Third hook; 271. Hook; 272. Slot; 28. Support foot; 291. Fourth mounting hole; 292. Fifth mounting hole; 293. Sixth mounting hole. DETAILED DESCRIPTION

[0063] 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.

[0064] In the description of the present invention, it should be noted that the terms "up", "down", "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, rather than indicating or implying 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.

[0065] 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 in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0066] See also Figure 1-19The present invention provides a corner sofa, including a backrest assembly 1 and a base assembly 2, the backrest assembly 1 includes a backrest board 11 and a backrest connecting structure 12, the backrest connecting structure 12 includes a crossbeam 121, a longitudinal beam 122 vertically connected to the crossbeam 121, and two side panels 123 respectively connected to the two ends of the crossbeam 121, a backrest mounting hole 13 is provided on the rear side of the longitudinal beam 122, the side panel 123 and the backrest board 11, and a screw and nut assembly connects the backrest board 11 and the backrest connecting structure 12 together through the backrest mounting hole 13.

[0067] Specifically, a nut is pre-embedded in the backrest mounting hole 13 at the rear side of the side plate 123, thereby reducing the thickness and weight of the backrest plate 11. The lower inner side of the side plate 123 and the end of the cross beam 121 are both provided with a first mounting hole 17, and the screw nut assembly connects the side plate 123 and the cross beam 121 together through the first mounting hole 17; the end of the longitudinal beam 122 and the middle of the cross beam 121 are both provided with a third mounting hole 19, and the screw nut assembly connects the longitudinal beam 122 and the cross beam 121 together through the third mounting hole 19.

[0068] In this embodiment, the cross beam 121 and the longitudinal beam 122 are both metal parts, and the side plate 123 is an integrally formed injection molded part; the cross sections of the cross beam 121 and the longitudinal beam 122 are both U-shaped.

[0069] Thus, the backrest connection structure 12 and the backrest board 11 are detachably connected, making assembly simple and convenient for maintenance. In addition, the cross beam 121 and the longitudinal beam 122 in the backrest connection structure 12 are both metal parts, and the side plate 123 is an injection molded part, which reduces the cost and weight while ensuring a certain support strength, and is convenient for transportation.

[0070] See also Figure 3 The left and right sides of the upper end of the backrest plate 11 are provided with an anti-rollover deformation structure for limiting the side plate 123, and the anti-rollover deformation structure includes a wedge-shaped recess 1131 and a wedge-shaped protrusion 1132. The upper end of the side plate 123 is placed in the wedge-shaped recess 1131, and the side surface of the side plate 123 is in contact with the wedge-shaped protrusion 1132; the lower end of the backrest plate 11 is provided with a tightening hanging bar 112, and the end of the tightening hanging bar 112 is provided with an anti-slip strip 1121 with a water drop-shaped cross section.

[0071] In this embodiment, the backrest board 11 is an integrally formed blow-molded part; the tightening and hanging bar 112 is arranged along the length direction of the backrest board 11; and the anti-slip strip 1121 is arranged along the length direction of the tightening and hanging bar 112.

[0072] Thus, by setting the anti-flip deformation structure, when the side panel 123 is subjected to external force, the upper side surface of the side panel 123 abuts against the wedge-shaped protrusion 1132, thereby preventing the side panel 123 from being deformed, thereby providing the connection stability between the backrest board 11 and the side panel 123; in addition, setting the anti-flip deformation structure on the left and right sides of the upper end of the backrest board 11 is conducive to hanging supporting parts of different sizes on the outer side of the backrest board 11, thereby obtaining sofa backs of different sizes, and having good flexibility. In addition, by setting the tightening hanging bar 112, when the sofa cover is hung on the backrest board 11 and tightened on the tightening hanging bar 112, the sofa cover can cooperate with the teardrop-shaped anti-slip strip 1121, thereby effectively preventing the sofa cover from falling off.

[0073] See also Figure 3 A plurality of reinforcing blind holes 114 and hanging mounting holes 115 are arranged at intervals in the middle of the backrest board 11 , and the cross-section of the reinforcing blind holes 114 gradually decreases from the outer side of the backrest board 11 to the inner side of the backrest board 11 .

[0074] Thus, by providing the reinforcing blind hole 114, the hardness of the backrest board 11 can be improved, and when the backrest board 11 is squeezed by an external object, it is not easy to deform; the cross section of the reinforcing blind hole 114 gradually decreases from the outside of the backrest board 11 to the inside of the backrest board 11, so that a spiral body can be formed in the cavity of the backrest board 11, and the spiral body can further enhance the hardness of the backrest board 11. In addition, by providing a plurality of hanging and tightening installation holes 115, it is convenient to hang the sofa cover and the sofa soft bag, so as to achieve different appearance requirements.

[0075] In this embodiment, a plurality of reinforcement blind holes 114 and suspension installation holes 115 are arranged in a staggered manner horizontally and vertically.

[0076] See also Figure 7-8 A connector 14 for connecting to the base assembly 2 is provided on the inner side of the lower end of the side plate 123. The connector 14 includes a guide rail 141 and a clamping spring 142. The clamping spring 142 consists of an n-shaped portion 1421 and a bent portion 1422. The n-shaped portion 1421 includes an inner extension end and an outer extension end. The bent portion 1422 is arranged on the outer extension end of the n-shaped portion 1421. One end of the guide rail 141 extends into the inner cavity of the n-shaped portion 1421.

[0077] Specifically, a second mounting hole 18 is provided on the inner side of the lower end of the side plate 123 , the guide rail 141 , and the pressing spring sheet 142 , and the screw-nut assembly connects the side plate 123 and the connector 14 together through the second mounting hole 18 .

[0078] In this embodiment, nuts are also pre-embedded in the second mounting holes 18 on the side plate 123. A plurality of reinforcing ribs are also provided on the inner side of the side plate 123, so as to improve the supporting strength of the side plate 123.

[0079] See also Fig.13 The base assembly 2 is provided with an insertion strip 24 that matches the plug-in connector 14, and the insertion strip 24 is provided with a snap-in hole 241. After the insertion strip 24 on the base assembly 2 is inserted into the guide rail 141, the bent portion 1422 on the clamping spring 142 can be snap-fitted with the snap-in hole 241 on the insertion strip 24, thereby achieving a firm connection between the two.

[0080] In this embodiment, a plurality of reinforcing ribs are disposed on the inner side of the side plate 123 , thereby improving the supporting strength of the side plate 123 .

[0081] See also Figure 2 , Fig.11 and Fig.12 The backrest assembly 1 also includes a plurality of first springs 15. The cross beam 121 is provided with a plurality of hook mounting holes 1211, and the plurality of hook mounting holes 1211 are spaced apart along the length direction of the cross beam 121; a first hook 16 is provided in each hook mounting hole 1211; a corresponding second hook 111 is provided at the front upper end of the backrest plate 11 corresponding to the first hook 16; one end of the first spring 15 is suspended on the first hook 16 of the cross beam 121, and the other end is suspended on the corresponding second hook 111 of the backrest plate 11.

[0082] Specifically, the first hook 16 includes a hook body 161 and a T-shaped protrusion 162, the hook body 161 is provided with a spring accommodating groove 1611, the T-shaped protrusion 162 passes through the hook mounting hole 1211 and is fixed by clamping, and an arc structure 163 is provided between the hook body 161 and the T-shaped protrusion 162, and the hook mounting hole 1211 is provided with an arc hole 12111 that matches the arc structure 163; one end of the first spring 15 is hung in the spring accommodating groove 1611.

[0083] In this embodiment, the second hook 111 and the backrest plate 11 are blow-molded in one piece.

[0084] Therefore, when the first spring 15 needs to be installed, the T-shaped protrusion 162 on the first hook 16 is first passed through the hook installation hole 1211. The first hook 16 is rotated around the arc hole 12111 and positioned until the arc structure 163 just abuts against the hook installation hole 1211, thereby realizing the connection between the first hook 16 and the beam 121.

[0085] In addition, a plurality of anti-dropping protrusions 1212 are provided at intervals along the length direction of the lower end of the crossbeam 121 . When the sofa cover is hung on the bottom end of the crossbeam 121 , the anti-dropping protrusions 1212 can prevent the sofa cover from falling off.

[0086] See also Figure 13-19 The base assembly 2 includes two symmetrically arranged first support members 21, second support members 22 respectively connected to the two opposite ends of the two first support members 21, and a support beam 23 having one end connected to the second support member 22 and the other end connected to the two opposite ends of the two first support members 21. The two first support members 21 and the second support member 22 together form a fan-shaped support frame.

[0087] Specifically, the first support member 21 is arc-shaped, and the two first support members 21 constitute the rear arc frame of the support frame; the second support member 22 includes a horizontal portion 221 and inclined portions 222 symmetrically arranged on both sides of the horizontal portion 221, the horizontal portion 221 constitutes the front frame of the support frame, and the two inclined portions 222 respectively constitute the left and right side frames of the support frame; a mounting plate is protruding from the end of the inclined portion 222, and the mounting plate is located in the middle position, thereby dividing the end of the inclined portion 222 into two symmetrical mounting grooves to facilitate the left and right universal installation of the second support member 22. The two opposite ends of the two first support members 21 are respectively connected to the mounting plates on the two inclined portions 222; the support beam 23 is composed of a truncated cone body with a circular cross-section, one end being thinner and the other end being thicker, and a bent mounting protrusion arranged at the thinner end of the truncated cone body, and the opposite ends of the two first support members 21 are overlapped on the mounting protrusion and connected together with the mounting protrusion; a circular concave cavity is provided on the horizontal portion 221, and the other end of the support beam 23 is inserted into the circular concave cavity and connected together with the horizontal portion 221.

[0088] In this embodiment, the first support member 21, the second support member 22 and the support beam 23 are all made by blow molding; the plug-in member 14 is arranged at the left and right ends of the first support member 21. The two opposite ends of the two first support members 21 and the mounting plate of the inclined portion 222 are both provided with fourth mounting holes 291, and the screw and nut assembly connects the first support member 21 and the second support member 22 together through the fourth mounting holes 291; the mounting protrusion of the support beam 23 and the two opposite ends of the two first support members 21 are both provided with fifth mounting holes 292, and the other end of the support beam 23 and the circular concave cavity of the horizontal portion 221 are both provided with sixth mounting holes 293, and the screw and nut assembly connects the support beam 23 with the first support member 21 and the second support member 22 together through the fifth mounting holes 292 and the sixth mounting holes 293.

[0089] Thus, the support frame is formed by connecting the first support member 21, the second support member 22 and the support beam 23, which is simple to assemble and convenient to repair and replace. In addition, the first support member 21, the second support member 22 and the support beam 23 are all made by blow molding, which reduces the cost and weight while ensuring a certain support strength, and is convenient for transportation.

[0090] See also Fig.13 The base assembly 2 further includes a plurality of second springs 25. A plurality of third hooks 26 are arranged at intervals on the upper end of the first support member 21 and the upper end of the horizontal portion 221 of the second support member 22. The third hooks 26 on the first support member 21 are arranged correspondingly to the third hooks 26 on the second support member 22. One end of the second spring 25 is suspended on the third hook 26 of the first support member 21, and the other end is suspended on the corresponding third hook 26 on the horizontal portion 221 of the second support member 22.

[0091] In this embodiment, the third hook 26 is an injection molded part, and is blow-molded integrally with the first support member 21 and the second support member 22 .

[0092] See also Fig.17 The inclined portion 222 on one side of the second support member 22 is provided with a hook 271 for connecting to a sofa base on one side, and a nut is pre-embedded in the hook 271; the inclined portion 222 on the other side is provided with a slot 272 for connecting to the sofa base on the other side.

[0093] Therefore, when the corner sofa needs to be assembled, the slot 272 on the sofa base close to the inclined portion 222 on one side is first aligned with the hook 271 on the inclined portion 222, and then a pin is inserted into the slot 272 and threadedly connected with the nut in the hook 271, so that the sofa base and the corner sofa can be assembled; then the slot 272 on the inclined portion 222 on the other side is aligned with the hook 271 on the other sofa base close to the inclined portion 222 on the side, and then a pin is inserted into the slot 272 and threadedly connected with the nut in the hook 271, so that the corner sofa can be assembled with the other sofa base.

[0094] In addition, a plurality of legs 28 are provided at the bottom of the first support member 21 and the second support member 22 to provide support force for the support frame.

[0095] In summary, the corner sofa of the present invention has the following beneficial effects:

[0096] (i) The corner sofa of the present invention has detachable connections between the backrest board 11 and the backrest connecting structure 12, and between the backrest connecting structure 12 and the base assembly 2, so that the corner sofa is easy to assemble and convenient to maintain. In addition, the cross beam 121 and the longitudinal beam 122 in the backrest connecting structure 12 are metal parts, and the side plate 123 is an injection molded part, which reduces the cost and weight while ensuring a certain support strength, and is convenient for transportation.

[0097] (ii) The corner sofa of the present invention, the support frame is formed by connecting the first support member 21, the second support member 22 and the support beam 23, which is simple to assemble and convenient to repair and replace. In addition, the first support member 21, the second support member 22 and the support beam 23 are all made by blow molding, which reduces the cost and weight while ensuring a certain support strength, and is convenient for transportation.

[0098] (III) The corner sofa of the present invention can realize a detachable connection between the backrest connection structure 12 and the base assembly 2 by providing a plug-in connector 14. When the plug-in strip 24 on the base assembly 2 is inserted into the guide rail 141, the bent portion 1422 on the compression spring 142 can be engaged with the engaging hole 241 on the plug-in strip 24, thereby realizing a firm connection between the two.

[0099] (IV) The corner sofa of the present invention has a plurality of anti-dropping protrusions 1212 disposed at the bottom end of the cross beam 121. When the sofa cover is hung on the bottom end of the cross beam 121, the anti-dropping protrusions 1212 can prevent the sofa cover from falling off.

[0100] (V) The corner sofa of the present invention can improve the connection stability between the backrest plate 11 and the side plate 123 by providing an anti-overturning deformation structure; by providing a tightening hanging bar 112, it can be used to hang the sofa cover, and the anti-falling strip 1121 on the tightening hanging bar 112 can effectively prevent the sofa cover from falling off.

[0101] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned 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 present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. Corner sofa, characterized by: It comprises a backrest assembly (1) and a base assembly (2), wherein: The backrest assembly (1) comprises a backrest plate (11) and a backrest connecting structure (12); the backrest connecting structure (12) comprises a crossbeam (121), a longitudinal beam (122) vertically connected to the crossbeam (121), and two side plates (123) respectively connected to two ends of the crossbeam (121); the crossbeam (121) and the longitudinal beam (122) are both metal parts, and the side plates (123) are integrally formed injection molded parts; The longitudinal beam (122), the rear side of the side plate (123) and the backrest plate (11) are all provided with backrest mounting holes (13), and the screw and nut assembly connects the backrest plate (11) and the backrest connecting structure (12) together through the backrest mounting holes (13); A connector (14) for connecting to the base assembly (2) is provided on the inner side of the lower end of the side plate (123); The backrest plate (11) is an integrally formed blow-molded part; The base assembly (2) comprises two symmetrically arranged first support members (21), second support members (22) respectively connected to two opposite ends of the two first support members (21), and a support beam (23) having one end connected to the second support member (22) and the other end connected to two opposite ends of the two first support members (21), wherein: The first support member (21), the second support member (22) and the support beam (23) are all made by blow molding; The two first support members (21) and the second support member (22) together form a fan-shaped support frame; Both ends of the first support member (21) are respectively provided with insertion strips (24) for matching with the plug-in member (14); The first support member (21) is in an arc shape, and the two first support members (21) constitute the rear arc frame of the support frame; the second support member (22) comprises a horizontal portion (221) and inclined portions (222) symmetrically arranged on both sides of the horizontal portion (221), the horizontal portion (221) constitutes the front frame of the support frame, and the two inclined portions (222) respectively constitute the left and right side frames of the support frame; The two opposite ends of the two first support members (21) are respectively connected to one end of the two inclined portions (222), one end of the support beam (23) is connected to the two opposite ends of the two first support members (21), and the other end of the support beam (23) is connected to the horizontal portion (221).

2. The corner sofa according to claim 1, characterized in that: The plug connector (14) comprises a guide rail (141) and a pressing spring sheet (142); the pressing spring sheet (142) comprises an n-shaped portion (1421) and a bent portion (1422); the n-shaped portion (1421) comprises an inner extension end and an outer extension end; the bent portion (1422) is arranged on the outer extension end of the n-shaped portion (1421); one end of the guide rail (141) extends into the inner cavity of the n-shaped portion (1421); The inserting strip (24) is provided with a locking hole (241) for locking with the bent portion (1422) of the pressing spring sheet (142).

3. The corner sofa according to claim 1, characterized in that: The backrest assembly (1) further comprises a plurality of first springs (15), wherein: The crossbeam (121) is provided with a plurality of hook mounting holes (1211), and the plurality of hook mounting holes (1211) are arranged at intervals along the length direction of the crossbeam (121); a first hook (16) is arranged in each of the hook mounting holes (1211); A second hook (111) is provided at the front upper end of the backrest plate (11) corresponding to the first hook (16); One end of the first spring (15) is hung on a first hook (16) of the crossbeam (121), and the other end is hung on a corresponding second hook (111) of the backrest plate (11).

4. The corner sofa according to claim 3, characterized in that: The first hook (16) comprises a hook body (161) and a T-shaped protrusion (162); the hook body (161) is provided with a spring receiving groove (1611); the T-shaped protrusion (162) passes through the hook mounting hole (1211) and is fixed by clamping; an arc structure (163) is provided between the hook body (161) and the T-shaped protrusion (162); the hook mounting hole (1211) is provided with an arc hole (12111) matching the arc structure (163); one end of the first spring (15) is hung in the spring receiving groove (1611); The second hook (111) and the backrest plate (11) are blow-molded as one piece.

5. The corner sofa according to claim 1, characterized in that: The base assembly (2) further comprises a plurality of second springs (25), wherein: A plurality of third hooks (26) are arranged at intervals on the upper end of the first support member (21) and the upper end of the horizontal portion (221) of the second support member (22); the third hooks (26) on the first support member (21) and the third hooks (26) on the second support member (22) are arranged correspondingly; one end of the second spring (25) is suspended on the third hook (26) of the first support member (21), and the other end is suspended on the corresponding third hook (26) on the horizontal portion (221) of the second support member (22).

6. The corner sofa according to claim 5, characterized in that: The third hook (26) is an injection-molded part, and is blow-molded integrally with the first support part (21) and the second support part (22).

7. The corner sofa according to claim 1, characterized in that: The lower end of the crossbeam (121) is provided with a plurality of anti-slip protrusions (1212) at intervals along its length direction.

8. The corner sofa according to claim 1, characterized in that: The left and right sides of the upper end of the backrest plate (11) are provided with anti-overturning deformation structures for limiting the side plates (123), and the lower end of the backrest plate (11) is provided with a hanging bar (112), wherein: The anti-overturning deformation structure comprises a wedge-shaped recess (1131) and a wedge-shaped protrusion (1132); the upper end of the side plate (123) is placed in the wedge-shaped recess (1131), and the side surface of the side plate (123) abuts against the wedge-shaped protrusion (1132); An anti-slip strip (1121) having a water drop-shaped cross section is provided at the end of the tightening hanging strip (112).

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