Sofa supporting frame and sofa

Abstract

The utility model provides a sofa supporting frame and a sofa. The sofa supporting frame comprises two main supporting pipes arranged in parallel, a cross beam connected with the two main supporting pipes and four vertical supporting pipes. The vertical supporting pipes are arranged at the front and rear ends of the main supporting pipe. The two main supporting pipes and the four vertical supporting pipes are each of a square hollow structure. Through the combination of the two main supporting pipes and the four vertical supporting pipes which are arranged in parallel, the stability is good. Meanwhile, the sofa supporting frame is made of hollow square pipes, so that the overall weight is reduced while the strength and durability are guaranteed, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of seating, and in particular to a sofa support frame and a sofa. Background Art

[0002] With the continuous improvement of people's living standards, many different types of seating have emerged on the market. Seating furniture, including chairs, sofas, stools, benches, and other furniture or devices that provide comfortable sitting support, is a common feature of sofas. The support frames of existing sofas are fixed structures that cannot be disassembled after installation, making them inconvenient to transport and reassemble. Currently, the support frames of multifunctional sofas on the market are mostly floor-standing wooden frames, which are unstable and prone to deformation during use. Furthermore, the production process is complex and the wood cost is high.

[0003] Therefore, it is necessary to provide an improved sofa support frame and sofa to solve the above problems. Utility Model Content

[0004] The present application provides a sofa support frame and a sofa with good stability and low production cost.

[0005] The present application provides a sofa support frame, comprising two main support tubes arranged in parallel, a crossbeam connecting the two main support tubes and four vertical support tubes, wherein the vertical support tubes are arranged at the front and rear ends of the main support tubes, and the two main support tubes and the four vertical support tubes are all square hollow structures.

[0006] Furthermore, the crossbeam and the two main support tubes together form a horizontal frame; the horizontal frame is H-shaped and is arranged in the middle and lower part of the vertical support tubes.

[0007] Furthermore, a first iron frame fixing hole and a second iron frame fixing hole are provided at the rear of the main support tube; a third iron frame fixing hole is provided on the vertical support tube, and the third iron frame fixing hole is located above the main support tube and is arranged adjacent to the main support tube.

[0008] Furthermore, it also includes an iron frame fixing pipe, which is welded to the front part of the main support pipe and is provided with an iron frame mounting hole.

[0009] Furthermore, the iron frame fixing tube includes a front fixing tube and a rear fixing tube arranged at a certain distance, the front fixing tube is arranged against the vertical support tube at the front end, and the rear fixing tube is arranged at the front part of the crossbeam.

[0010] Furthermore, the front fixing tube and the rear fixing tube are both square hollow structures; the front fixing tube is provided with an iron frame mounting hole; and the rear fixing tube is provided with two iron frame mounting holes.

[0011] Furthermore, it also includes an iron frame fixing part, which is a sheet metal part. The iron frame fixing part is welded to the front part of the main support tube, and a plurality of iron frame mounting holes are provided on the iron frame fixing part.

[0012] Furthermore, a sofa leg mounting portion is provided on the vertical support tube, and a sofa leg is mounted on the sofa leg mounting portion; the sofa leg mounting portion is located below the main support tube.

[0013] Furthermore, a handrail mounting hole is provided on the upper portion of the vertical support tube.

[0014] Furthermore, the vertical support tubes are each provided with a mortise and tenon, and both ends of the main support tube are each provided with a tenon, and the tenon is inserted into the mortise and tenon and welded to the main support tube.

[0015] Furthermore, the four vertical support tubes include two front tubes located at the front end of the main support tube and two rear tubes located at the rear end of the main support tube; the height of the rear tube is greater than the height of the front tube.

[0016] Furthermore, the front tube is perpendicular to the main support tube, the rear tube is arranged obliquely to the main support tube, and the tops of the two rear tubes are provided with beveled portions.

[0017] Furthermore, the two rear tubes are respectively provided with rear sealing plate connecting pieces, and the rear sealing plate connecting pieces include a fixing portion and a connecting portion perpendicular to each other, and the fixing portion is welded to the inner side of the rear tube.

[0018] The present application also provides a sofa, comprising a functional iron frame, an armrest assembly, a backrest assembly and the above-mentioned sofa support frame, wherein the armrest assembly and the functional iron frame are both fixed to the sofa support frame, the armrest assembly is arranged on the outside of the two main support tubes, and the functional iron frame is arranged between the two main support tubes.

[0019] Furthermore, the functional iron frame includes a front drive tube and a rear drive tube, the front drive tube is close to the front end of the main support tube, the rear drive tube is close to the rear end of the main support tube, and the crossbeam is located between the front drive tube and the rear drive tube; a seat frame is formed on the functional iron frame.

[0020] Furthermore, the armrest assembly includes an armrest main body portion fixed together and an armrest fixing portion located inside the armrest main body portion, and the armrest fixing portion is plate-shaped and fixed to the vertical support tube.

[0021] The present invention has good stability by combining two parallel main support tubes and four vertical support tubes. At the same time, the use of hollow square tubes in the sofa support frame can reduce the overall weight and manufacturing cost while ensuring strength and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the sofa support frame of the present application.

[0023] Figure 2 yes Figure 1 Side view of the sofa support frame shown.

[0024] Figure 3 yes Figure 1 Schematic diagram of the main support tube of the sofa support frame shown.

[0025] Figure 4 yes Figure 1 Schematic diagram of the crossbeam of the sofa support frame shown.

[0026] Figure 5 yes Figure 1 Schematic diagram of the front tube of the sofa support frame shown.

[0027] Figure 6 yes Figure 5 A schematic diagram of another embodiment of the front tube of the sofa support frame is shown.

[0028] Figure 7 yes Figure 1 Schematic diagram of the rear tube of the sofa support frame shown.

[0029] Figure 8 It is a schematic diagram of the sofa legs of the sofa of this application.

[0030] Figure 9 This is a schematic diagram of a sofa without armrest components.

[0031] Figure 10 yes Figure 9 A side view of the sofa is shown without the armrest assembly.

[0032] Figure 11 This is a schematic diagram of a sofa with only one armrest assembly.

[0033] Figure 12 yes Figure 11 The sofa shown is provided with only one armrest assembly from another angle, wherein only a part of the armrest assembly is shown.

[0034] Description of Figure Numbers:

[0035] 100, functional iron frame; 101, front drive tube; 102, rear drive tube; 103, seat frame; 200, armrest assembly; 201, armrest main body; 202, armrest fixing portion; 300, backrest assembly; 400, rear cover plate; 10, main support tube; 11, first iron frame fixing hole; 12, second iron frame fixing hole; 13, tenon; 131, groove; 14, first crossbeam fixing hole; 15, second crossbeam fixing hole; 20, crossbeam; 21, main body; 22, support tube fixing portion; 221, first support tube connecting hole; 222, second support tube connecting hole; 23, reinforcement rib; 30 , vertical support tube; 301, third iron frame fixing hole; 302, sofa leg mounting part; 3021, sofa leg mounting hole; 303, armrest mounting hole; 304, mortise and tenon; 31, front tube; 32, rear tube; 321, beveled part; 40, iron frame fixing tube; 401, iron frame mounting hole; 41, front fixing tube; 42, rear fixing tube; 50, sofa leg; 51, sofa leg connecting part; 511, sofa leg connecting hole; 52, sofa leg supporting part; 521, supporting cavity; 522, supporting rib; 60, rear sealing plate connecting piece; 61, fixing part; 62, connecting part; 621, rear sealing plate connecting hole. DETAILED DESCRIPTION

[0036] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0037] If there are terms related to directional indications or positional relationships in the embodiments of this application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.

[0038] See also Figures 1 to 2 As shown, the sofa support frame includes two main support tubes 10, a crossbeam 20, four vertical support tubes 30, and an iron frame fixing tube 40. The two main support tubes 10 are arranged in parallel, and the crossbeam 20 is located between and connected to the two main support tubes 10. The vertical support tubes 30 are installed at the front and rear ends of the main support tubes 10. The iron frame fixing tube 40 is welded to the front of the main support tubes 10.

[0039] See also Figures 3 to 8As shown, the two main support tubes 10 are square, hollow structures. A first iron frame fixing hole 11 and a second iron frame fixing hole 12 are spaced apart at the rear of the main support tubes 10. Beveled grooves 131 are defined at the upper and lower ends of each main support tube 10, with tenons 13 formed on the outer portions of the main support tubes 10. A first crossbeam fixing hole 14 and a second crossbeam fixing hole 15 are spaced apart at the front of the middle portion of the main support tubes 10.

[0040] The crossbeam 20 includes a main body 21 and support tube fixing portions 22 located at both ends of the main body 21. The main body 21 is a circular hollow structure, i.e., a hollow circular tube. The support tube fixing portions 22 are provided with a first support tube connection hole 221 and a second support tube connection hole 222. The first support tube connection hole 221 aligns with the first crossbeam fixing hole 14, and the second support tube connection hole 222 aligns with the second crossbeam fixing hole 15. Fixing members are assembled between the first support tube connection hole 221 and the first crossbeam fixing hole 14, and between the second support tube connection hole 222 and the second crossbeam fixing hole 15, respectively, to secure the crossbeam 20 to the main support tube 10.

[0041] The support tube fixing portion 22 is provided with a triangular reinforcement rib 23 . The reinforcement rib 23 is located between the first support tube connection hole 221 and the second support tube connection hole 222 to enhance the strength of the support tube fixing portion 22 .

[0042] According to the embodiment of the present application, the main body 21 can also be a hollow square tube or a hollow tube of other geometric shapes. The fixing member can be a bolt, a rivet, etc.

[0043] The cross beam 20 and the two main support tubes 10 together form a horizontal frame. The horizontal frame is H-shaped and is arranged in the middle and lower part of the vertical support tubes 30.

[0044] Each of the four vertical support tubes 30 is a square, hollow structure. The vertical support tubes 30 are provided with a third iron frame fixing hole 301, a sofa leg mounting portion 302, an armrest mounting hole 303, and a tenon groove 304. The third iron frame fixing hole 301 is located above and adjacent to the main support tube 10. The sofa leg mounting portion 302 is located below the main support tube 10. The sofa mounting portion 302 is provided with a sofa leg mounting hole 3021. The armrest mounting hole 303 is provided at the top of the vertical support tube 30. The tenon 13 of the main support tube 10 engages the tenon groove 304, and the vertical support tube 30 is welded to the main support tube 10.

[0045] The four vertical support tubes 30 include two front tubes 31 located at the front end of the main support tube 10 and two rear tubes 32 located at the rear end of the main support tube 10. The rear tubes 32 are taller than the front tubes 31. The front tubes 31 are perpendicular to the main support tube 10, while the rear tubes 32 are inclined relative to the main support tube 10. The tops of the two rear tubes 32 are provided with chamfered portions 321.

[0046] According to an embodiment of the present application, the front tube 31 on one side of the main support tube 10 is provided with a third iron frame fixing hole 301, a sofa leg mounting portion 302, a sofa leg mounting hole 3021, and a tongue and tongue groove 304. The front tube 31 on the other side of the main support tube 10 is provided with a third iron frame fixing hole 301, a sofa leg mounting portion 302, a sofa leg mounting hole 3021, an armrest mounting hole 303, and a tongue and tongue groove 304. The height of the front tube 31 on the outside of the main support tube 10 is greater than that of the front tube 31 on the inside of the main support tube 10.

[0047] The frame fixing tube 40 includes a front fixing tube 41 and a rear fixing tube 42, spaced apart. The front fixing tube 41 is positioned adjacent to the front tube 31, while the rear fixing tube 42 is positioned forward of the crossbeam 20. Both the front fixing tube 41 and the rear fixing tube 42 are square, hollow structures. The front fixing tube 41 is provided with a frame mounting hole 401. The rear fixing tube 42 is provided with two frame mounting holes 401. The frame mounting hole 401 on the front fixing tube 41 is a strip-shaped hole. The frame mounting holes 401 on the rear fixing tube 42 are both round holes.

[0048] According to the embodiment of the present application, the iron frame mounting holes 401 on the front fixing tube 41 and the rear fixing tube 42 can be both strip-shaped holes or both round holes. In addition, one or more iron frame mounting holes 401 can be provided on the front fixing tube 41 and the rear fixing tube 42.

[0049] In some embodiments, instead of the iron frame fixing tube 40, an iron frame fixing piece may be provided. The iron frame fixing piece is welded to the front portion of the main support tube 10. The iron frame fixing piece is a single-layer sheet metal piece. The iron frame fixing piece is provided with a plurality of iron frame mounting holes.

[0050] According to the embodiment of the present application, a reinforcing rib is provided on one side of the iron frame fixing piece close to the crossbeam 20. The reinforcing rib is triangular in shape.

[0051] The sofa leg 50 is mounted on the bottom of the sofa support frame. The sofa leg 50 includes a sofa leg connection portion 51 and a sofa leg support portion 52. The sofa leg connection portion 51 is provided with a sofa leg connection hole 511. The sofa leg connection hole 511 aligns with the sofa leg mounting hole 3021. A fastener is assembled into the sofa leg connection hole 511 and the sofa leg mounting hole 3021 to connect the vertical support tube 30 to the sofa leg 50.

[0052] The sofa leg connecting portion 51 is in contact with the sofa leg mounting portion 302. The sofa leg supporting portion 52 is located below the sofa leg mounting portion 302 to support the sofa leg mounting portion 302. The sofa leg connecting portion 51 is a plate-like structure, and a support cavity 521 is formed in the sofa leg supporting portion 52. A plurality of support ribs 522 are provided in the support cavity 521.

[0053] A rear plate connector 60 is provided on each of the two rear tubes 32. The two rear plate connectors 60 are positioned opposite each other. Each rear plate connector 60 includes a fixing portion 61 and a connecting portion 62 that are perpendicular to each other. The fixing portion 61 is welded to the inner side of the rear tube 32. The connecting portion 62 is provided with two rear plate connection holes 621.

[0054] See also Figures 9 to 12 As shown, the present application also provides a sofa, comprising a functional iron frame 100, an armrest assembly 200, a backrest assembly 300, and the aforementioned sofa support frame. The functional iron frame 100 is disposed between two main support tubes 10. The armrest assembly 200 and the functional iron frame 100 are both fixed to the sofa support frame. The armrest assembly 200 is disposed outside the two main support tubes 10.

[0055] The functional iron frame 100 includes a front drive tube 101 and a rear drive tube 102. The front drive tube 101 is located near the front end of the main support tube 10, while the rear drive tube 102 is located near the rear end of the main support tube 10. A crossbeam 20 is positioned between the front and rear drive tubes 101 and 102. A seat frame 103 is formed on the functional iron frame 100 and positioned above the horizontal frame. A soft cushion is provided on the seat frame 103.

[0056] According to the embodiments of the present application, when the sofa is a single-seater sofa, armrest assemblies 200 are installed on both sides of the sofa support frame. When the sofa is an outer sofa seat of a modular sofa, an armrest assembly 200 is installed on the outer side of the sofa support frame, and the armrest assembly 200 is located outside the main support tube 10. The third iron frame fixing hole 301 located on the inner front tube 31 of the main support tube 10 is a sofa combination connection hole for fixing adjacent sofas.

[0057] In some embodiments, the sofa may not be provided with the armrest assembly 200 .

[0058] The functional iron frame 100 is provided with a plurality of functional iron frame mounting holes, which are aligned with the iron frame mounting hole 401, the first iron frame fixing hole 11 and the second iron frame fixing hole 12 respectively, so as to fix the functional iron frame 100 and the sofa support frame.

[0059] The armrest assembly 200 includes an armrest body 201 and an armrest fixing portion 202 located inside the armrest body 201. The armrest fixing portion 202 is plate-shaped and fixed to the vertical support tube 30. The armrest assembly 200 is fixed to the front tube 31 and the rear tube 32 through the armrest mounting holes 303.

[0060] The backrest assembly 300 is tilted, with an angle between the backrest assembly 300 and the front tube 31. The rear tube 32 and the backrest assembly 300 have the same tilt angle. The backrest assembly 300 includes a rear cover plate 400, which is fixed to the rear portion of the main body of the backrest assembly 300. The rear cover plate 400 is fixed to the sofa support frame via a connecting portion 62.

[0061] The present invention has good stability by combining two parallel main support tubes 10 and four vertical support tubes 30. At the same time, the use of hollow square tubes in the sofa support frame can reduce the overall weight and manufacturing cost while ensuring strength and durability.

[0062] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.

Claims

1. A sofa support frame, characterized in that: It includes two parallel main support tubes, a crossbeam connecting the two main support tubes and four vertical support tubes. The vertical support tubes are arranged at the front and rear ends of the main support tubes. The two main support tubes and the four vertical support tubes are all square hollow structures.

2. The sofa support frame according to claim 1, characterized in that: The crossbeam and the two main support tubes together form a horizontal frame; the horizontal frame is H-shaped and is arranged in the middle and lower parts of the vertical support tubes.

3. The sofa support frame according to claim 1, characterized in that: The rear portion of the main support tube is provided with a first iron frame fixing hole and a second iron frame fixing hole; the vertical support tube is provided with a third iron frame fixing hole, and the third iron frame fixing hole is located above the main support tube and is arranged adjacent to the main support tube.

4. The sofa support frame according to claim 1, characterized in that: It also includes an iron frame fixing pipe, which is welded to the front part of the main support pipe and is provided with an iron frame mounting hole.

5. The sofa support frame according to claim 4, characterized in that: The iron frame fixing tube includes a front fixing tube and a rear fixing tube which are arranged at a certain distance. The front fixing tube is arranged close to the vertical support tube at the front end, and the rear fixing tube is arranged at the front part of the crossbeam.

6. The sofa support frame according to claim 5, characterized in that: The front fixing tube and the rear fixing tube are both square hollow structures; the front fixing tube is provided with an iron frame mounting hole; the rear fixing tube is provided with two iron frame mounting holes.

7. The sofa support frame according to claim 1, characterized in that: It also includes an iron frame fixing part, which is a sheet metal part. The iron frame fixing part is welded to the front part of the main support tube, and a plurality of iron frame mounting holes are provided on the iron frame fixing part.

8. The sofa support frame according to claim 1, characterized in that: The vertical support tube is provided with a sofa leg installation portion, and the sofa leg installation portion is installed with a sofa leg; the sofa leg installation portion is located below the main support tube.

9. The sofa support frame according to claim 1, characterized in that: The upper portion of the vertical support tube is provided with a handrail mounting hole.

10. The sofa support frame according to claim 1, characterized in that: The vertical support tubes are each provided with a mortise and tenon, and both ends of the main support tube are each provided with a tenon, and the tenon is inserted into the mortise and tenon and welded to the main support tube.

11. The sofa support frame according to claim 1, characterized in that: The four vertical support tubes include two front tubes located at the front end of the main support tube and two rear tubes located at the rear end of the main support tube; the height of the rear tube is greater than the height of the front tube.

12. The sofa support frame according to claim 11, characterized in that: The front tube is perpendicular to the main support tube, the rear tube is arranged obliquely to the main support tube, and the tops of the two rear tubes are provided with beveled portions.

13. The sofa support frame according to claim 11, characterized in that: The two rear tubes are respectively provided with rear sealing plate connecting pieces, and the rear sealing plate connecting pieces include a fixing portion and a connecting portion which are perpendicular to each other, and the fixing portion is welded to the inner side of the rear tube.

14. A sofa, characterized in that: It comprises a functional iron frame, an armrest assembly, a backrest assembly and a sofa support frame as described in any one of claims 1 to 13, wherein the armrest assembly and the functional iron frame are both fixed to the sofa support frame, the armrest assembly is arranged on the outside of the two main support tubes, and the functional iron frame is arranged between the two main support tubes.

15. The sofa according to claim 14, characterized in that: The functional iron frame includes a front drive tube and a rear drive tube, the front drive tube is close to the front end of the main support tube, the rear drive tube is close to the rear end of the main support tube, and the crossbeam is located between the front drive tube and the rear drive tube; a seat frame is formed on the functional iron frame.

16. The sofa according to claim 14, characterized in that: The armrest assembly includes an armrest main body portion and an armrest fixing portion located inside the armrest main body portion, which are fixed together. The armrest fixing portion is plate-shaped and fixed to the vertical support tube.

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