Folding combined sofa and sofa frame structure thereof

Abstract

The invention relates to the technical field of sofas, in particular to a folding type combined sofa and a sofa frame structure thereof.The folding type combined sofa comprises two sofa frames symmetrically arranged, the bottoms of the two sofa frames are installed in a clamped mode, the backs of the upper ends of the two sofa frames are fixedly connected with pillows, and the upper ends of the pillows are connected with backrests in a clamped mode; a side seat is fixedly connected to one side of the sofa frame, armrests are rotatably connected to the side seat, and a sofa cushion is clamped at the upper end of the sofa frame between the two groups of armrests; a user extrudes the backrest, triggers the extrusion assembly, extrudes the heat dissipation assembly through the extrusion assembly, inflates the interior of the fixing frame through the inflation assembly, absorbs air in the fixing frame through the air outlet assembly, and the air flows through the heat dissipation assembly to carry and discharge heat of the backrest to the position below the sofa frame, so that heat dissipation of the interior of the backrest can be achieved, and the dryness and heat feeling of the user is reduced; and the bottom of the sofa frame can be dehumidified and dedusted by using air carrying heat.

Description

Technical Field

[0001] The invention relates to the field of sofas, in particular to a foldable combined sofa and a sofa frame structure thereof. Background Art

[0002] A sofa is a cushioned multi-seat chair, mainly composed of a sofa frame and cushions. Armrests are provided on both sides of the sofa frame. It is a kind of soft furniture. With the increase in user demand, the existing sofa structure continues to improve. Compared with traditional sofas, folding combination sofas have better folding and combination capabilities, which facilitates sofa assembly, transportation and storage.

[0003] Existing foldable combination sofas, such as the foldable sofa proposed in patent application number "CN201811386287.0", facilitate the folding of the sofa body through structures such as a seat plate, a back plate, and a first telescopic motor. It has a simple structure and is easy to use. The back plate is used for the user to lean back.

[0004] However, the prior art still has defects. When the user rests with his back against the sofa backboard, the body heat of the user's back is transferred to the backboard, causing the temperature of the sofa backboard to rise. In a high temperature environment such as summer, the increased temperature of the sofa backboard causes the user to feel hot and have a poor user experience. Therefore, a foldable combination sofa and a sofa frame structure thereof are proposed. Summary of the invention

[0005] The object of the present invention is to provide a foldable modular sofa and a sofa frame structure thereof to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A foldable modular sofa comprises a sofa frame, wherein the sofa frame is symmetrically arranged in two groups, the bottoms of the two groups of sofa frames are clamped and installed, the upper ends of the two groups of sofa frames are fixedly connected with pillow seats, the upper ends of the pillow seats are clamped with backrests, one side of the sofa frame is fixedly connected with a side seat, the side seat is rotatably connected with an armrest, and the upper end of the sofa frame is clamped with a sofa cushion at a position between the two groups of armrests;

[0008] A support plate is fixedly connected to the bottom wall of the backrest, the support plate is abutted against the upper end of the pillow seat, a fixed frame for maintaining the shape of the backrest is fixedly connected to the upper end of the support plate, an inflation component for inflating the interior of the fixed frame is fixedly connected to one side of the fixed frame, a heat dissipation component for dissipating heat inside the backrest is fixedly connected to the interior of the fixed frame, an air outlet component is fixedly connected to the lower end of the backrest, the end of the air outlet component is located at the lower end of the sofa frame, the heat dissipation component cooperates with the air outlet component, an extrusion component is slidably connected to the interior of the backrest, and one end of the extrusion component is extruded and matched with the heat dissipation component.

[0009] Preferably, the extrusion assembly includes a pressure plate, which is slidably connected to the inside of the backrest, and the pressure plate is located on a side of the fixed frame close to the sofa cushion. A plurality of heat dissipation ports are penetrated through the pressure plate, and a plurality of pressure rods are fixedly connected to one side of the pressure plate. The plurality of pressure rods all penetrate one side of the fixed frame, and a plurality of push plates are fixedly connected to one end of the plurality of pressure rods located inside the fixed frame.

[0010] Preferably, the heat dissipation component includes a partition, which is vertically fixed to the inside of the fixed frame, and has multiple groups of vents extending through the partition, and multiple groups of holes extending through the side of the fixed frame close to the pressure plate, and two groups of sealing plates are symmetrically rotatably connected inside the multiple groups of vents, and both ends of the multiple groups of sealing plates are rotatably connected to the inner wall of the fixed frame, and one side of the multiple groups of sealing plates abuts against the inner wall of the vent, and the ends of the two groups of sealing plates located inside the same vent abut against each other, and the abutment point of the two groups of sealing plates is located on the side of the partition away from the pressure plate;

[0011] A plurality of reset springs are fixedly connected to one side of the inner wall of the partition close to the pressure plate, the ends of the plurality of reset springs are respectively fixedly connected to the plurality of sealing plates, the plurality of push plates are respectively located inside the plurality of vents, and the plurality of push plates are respectively squeezed and matched with the plurality of sealing plates.

[0012] Preferably, the inflation component includes an air pump 1, which is fixed to a side of a fixed frame away from a pressure plate, and is used to inflate the interior of the fixed frame. An air inlet end of the air pump 1 is located outside the backrest, and an air pressure sensor is fixed to the interior of the fixed frame, and the air pressure sensor cooperates with the air pump 1. The air pressure sensor is located on a side of a partition away from the pressure plate.

[0013] Preferably, the air outlet assembly includes an air outlet pipe, which is fixedly connected to the upper end of the support plate and is located between the fixed frame and the pressure plate. The side wall of the air outlet pipe is connected and fixedly connected with a connecting pipe. An operating groove is commonly provided between the pillow seat and the sofa frame. The connecting pipe passes through the support plate and the operating groove. An air pump 2 is fixedly connected to the lower end of the sofa frame. The end of the connecting pipe is connected to the air inlet end of the air pump 2. The air outlet end of the air pump 2 is fixedly connected with an exhaust pipe for blowing air to the bottom of the sofa frame.

[0014] Preferably, a connecting column is slidably connected inside the side seat, one end of the connecting column passing through the side seat is set as a pressing end, a plurality of groups of through grooves are set through the side wall of the connecting column, and elastic blocks are slidably connected inside the plurality of through grooves, the end of the elastic block passes through the side seat, the end of the elastic block is set as an isosceles triangle, the inclined surface of the elastic block is opposite to the pressing end, a plurality of groups of card slots are set on the inner wall of the armrest, the plurality of groups of card slots are arranged in a circular array, and the plurality of groups of elastic card blocks are engaged with the card slots;

[0015] A cavity is opened inside the side seat, and a connecting column passes through the cavity. A fixing plate is fixedly connected to the side wall of the connecting column located inside the cavity. The fixing plate is slidably connected in the cavity. A plurality of groups of compression springs are fixedly connected to one side of the fixing plate close to the elastic block, and the ends of the plurality of groups of compression springs are all fixedly connected to the inner wall of the cavity.

[0016] Preferably, the inner wall of the operating groove is rotatably connected to a connecting rod at a position inside the sofa frame, the end of the connecting rod is rotatably connected to the lower end of the support plate, one side of the sofa cushion is provided with a groove for the connecting rod to sink into, and one side of the backrest is fixed with a drawstring.

[0017] Preferably, the sofa cushion comprises three groups of elastic pads, the side walls of the three groups of elastic pads are connected by cloth tapes, and the three groups of elastic pads are folded with each other, and the lower ends of the three groups of elastic pads are bonded with anti-slip layers for increasing friction.

[0018] A sofa frame structure of a foldable combination sofa, the sofa frame structure comprises a sofa frame, two sets of sofa frames are clamped and installed at the bottom, a side seat is fixedly connected to one side of the sofa frame, a pillow seat is fixedly connected to the back of the upper end of the sofa frame, a connecting frame 1 is slidably connected to the side of the sofa frame away from the pillow seat, a connecting frame 1 is slidably connected to the side of the connecting frame 1 away from the pillow seat, a supporting foot 1 is fixedly connected to the end of the connecting frame 1 away from the pillow seat, a supporting foot 2 is fixedly connected to the end of the connecting frame 2 away from the pillow seat, and the supporting foot 1 and the supporting foot 2 respectively support the ends of the connecting frame 1 and the connecting frame 2.

[0019] Preferably, one group of the sofa frames has axle seat one and axle seat two fixedly connected to the lower end, axle seat one is aligned with the middle of axle seat two, the height of axle seat one is smaller than the height of axle seat two, a tension spring is rotatably connected to axle seat one, a clamping plate is rotatably connected to axle seat two, a mounting hole is provided on the clamping plate, a connecting rod is fixedly connected inside the clamping plate, the end of the tension spring is rotatably connected to the connecting rod, another group of sofa frames has a clamping column fixedly connected to the lower end, axle seat two is located between axle seat one and the clamping column, and the mounting hole is clamped and installed with the clamping column.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention forms an integral sofa base by docking two groups of sofa frames, and the support plate and the fixed frame maintain the shape of the backrest. When the user sits on the sofa with his back to the backrest, the extrusion component is triggered, and the extrusion component squeezes the heat dissipation component. The inflation component inflates the inside of the fixed frame, and the air outlet component absorbs the air inside the fixed frame. The air flows through the heat dissipation component and carries the heat of the backrest to the bottom of the sofa frame. This can not only dissipate the heat inside the backrest and reduce the user's feeling of dryness and heat, but also use the air carrying heat to dehumidify and remove dust from the bottom of the sofa frame.

[0022] 2. The present invention presses the pressing end of the connecting column to shrink the multiple groups of elastic blocks into the through groove, so that the armrest can be rotated to a certain angle or folded to adjust the angle of the armrest. Then, the pressing end is released, the compression spring squeezes the fixed plate, and the fixed plate pulls the connecting column to reset, so that the multiple groups of elastic blocks are reset, and the multiple groups of elastic blocks are engaged with the slots to fix the angle of the armrest.

[0023] 3. The present invention can extend the connecting frame 1 and the connecting frame 2 at one end of the sofa frame by pulling the connecting frame 1, and can extend the connecting frame 1 and the connecting frame 2 by pulling the connecting frame 2, so that the sofa frame can be freely extended, the overall length of the sofa can be changed, the sofa can be sat or lay down, and it has more functions and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a front view schematic diagram of the overall structure of the sofa of the present invention;

[0026] Figure 2 It is a schematic diagram of the back side of the overall structure of the sofa of the present invention;

[0027] Figure 3 It is a schematic diagram of the bottom of the overall structure of the sofa of the present invention;

[0028] Figure 4 yes Figure 3 A schematic diagram of the structure at A;

[0029] Figure 5 It is a schematic diagram of the extended structure of the sofa frame of the present invention;

[0030] Figure 6 It is a schematic diagram of the bottom of the sofa frame extension structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the backrest of the present invention;

[0032] Figure 8 It is a schematic diagram of the cross-sectional structure of the side seat of the present invention;

[0033] Fig. 9 It is a schematic diagram of the side structure of the fixing frame of the present invention;

[0034] The reference numerals in the figures are as follows:

[0035] 1. Sofa frame; 2. Side seat; 3. Armrest; 4. Connecting column; 5. Compression spring; 6. Cavity; 7. Card slot; 8. Through slot; 9. Elastic card block; 10. Sofa cushion; 11. Backrest; 12. Connecting frame 1; 13. Connecting frame 2; 14. Pillow seat; 15. Card column; 16. Card plate; 17. Mounting hole; 18. Connecting rod; 19. Tension spring; 20. Axle seat 1; 21. Operating slot; 22. Connecting rod; 23. Pull belt; 24. Pressure plate; 25. Pressure rod; 26. Fixed frame; 27. Partition; 28. Push plate; 29. ​​Sealing plate; 30. Reset spring; 31. Air pressure sensor; 32. Vent; 33. Air pump one; 34. Exhaust pipe; 35. Connecting pipe; 36. Air pump two; 37. Exhaust pipe; 38. Groove; 39. Support plate; 40. Fixed plate; 41. Support foot one; 42. Support foot two; 43. Elastic pad; 44. Anti-skid layer; 45. Axle seat two. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] A folding modular sofa, such as Figure 1-Figure 9 As shown, it includes a sofa frame, which can be made of steel or solid wood. The sofa frame is symmetrically arranged in two groups, and the bottoms of the two groups of sofa frames are clamped and installed. The two groups of sofa frames are combined and docked to form an integral sofa base. The upper backs of the two groups of sofa frames are fixedly connected with pillow seats 14, the pillow seats 14 have a hard support inside, and a thin soft protective layer outside. The upper end of the pillow seat 14 is clamped with a backrest 11, and the surface of the backrest 11 is elastic. A side seat 2 is fixedly connected to one side of the sofa frame, and an armrest 3 is rotatably connected to the side seat 2. A sofa cushion 10 is clamped at the position between the two groups of armrests 3 at the upper end of the sofa frame;

[0038] A support plate 39 is fixedly connected to the bottom wall of the backrest 11, and the support plate 39 abuts against the upper end of the pillow seat 14. A fixed frame 26 for maintaining the shape of the backrest 11 is fixedly connected to the upper end of the support plate 39. The fixed frame 26 and the support plate 39 form an inverted "T" shape. One side of the fixed frame 26 penetrates inside and outside, and the air inside the fixed frame 26 can flow to the outside of the fixed frame 26. An inflation component for inflating the inside of the fixed frame 26 is fixedly connected to one side of the fixed frame 26. The inflation component fills the air outside the backrest 11 into the inside of the fixed frame 26. A heat dissipation component for dissipating heat inside the backrest 11 is fixedly connected to the inside of the fixed frame 26. An air outlet component is fixedly connected to the lower end of the backrest 11. The air outlet component and the heat dissipation component are connected through the side wall of the fixed frame 26. The end of the air outlet component is located at the lower end of the sofa frame. The heat dissipation component cooperates with the air outlet component. An extrusion component is slidably connected to the inside of the backrest 11, and one end of the extrusion component is extruded and matched with the heat dissipation component.

[0039] An integral sofa base is formed by docking two sets of sofa frames, and the bottoms of the two sets of sofa frames are clamped to prevent the two sets of sofa frames from separating. The two sets of sofa frames can also be separated for use alone or for easy transportation. The support plate 39 and the fixed frame 26 maintain the shape of the backrest 11, and the armrest 3 can be rotated to adjust the angle or folded, so that the armrest 3 can be more convenient for users to use, or it is convenient for the sofa to be folded, stored and transported.

[0040] The user sits on the sofa cushion 10 with his back against the backrest 11, and the back squeezes the backrest 11, triggering the squeezing component. The squeezing component squeezes the heat dissipation component so that the air inside and outside the fixed frame 26 can circulate, and the inflation component absorbs the air around the backrest 11 and fills the air into the fixed frame 26. At the same time, the air outlet component absorbs the air inside the fixed frame 26, so that the air flows through the heat dissipation component, and the heat inside the backrest 11 is discharged to the bottom of the sofa frame. This can not only dissipate the heat inside the backrest 11 and reduce the user's feeling of dryness and heat, but also use the air carrying heat to dehumidify and remove dust from the bottom of the sofa frame.

[0041] like Figure 7 As shown, the extrusion assembly includes a pressing plate 24, and a sponge is bonded to the side of the pressing plate 24 away from the fixed frame 26 to increase the user's back comfort. The pressing plate 24 is slidably connected to the inside of the backrest 11. The pressing plate 24 is located on the side of the fixed frame 26 close to the sofa cushion 10. A plurality of heat dissipation ports are opened through the pressing plate 24. The heat absorbed by the backrest 11 flows through the heat dissipation ports, and the air carries the heat of the backrest 11 through the heat dissipation ports. A plurality of pressure rods 25 are fixedly connected to one side of the pressing plate 24, and the plurality of pressure rods 25 all pass through one side of the fixed frame 26, and a plurality of push plates 28 are fixedly connected to one end of the plurality of pressure rods 25 located inside the fixed frame 26.

[0042] When the user leans against the sofa backrest 11, the back presses the pressing plate 24, and the pressing plate 24 drives the pushing plate 28 to slide through the pressing rod 25. The pushing plate 28 presses the heat dissipation component to open the heat dissipation component. When the user stands up, the pressing plate 24 is released from the squeezing, and the squeezing component can be reset. The heat dissipation condition inside the backrest 11 can be changed according to the user's usage, so that it is more suitable for use.

[0043] like Figure 7 As shown, the heat dissipation assembly includes a partition 27, which is vertically fixed to the inside of the fixed frame 26. A plurality of vents 32 are formed on the partition 27, and the shape of the vents 32 is set to be rectangular. A plurality of holes are formed on one side of the fixed frame 26 close to the pressure plate 24, so that the inside and outside of one side of the fixed frame 26 are connected. Two sets of sealing plates 29 are symmetrically connected to the inside of the plurality of vents 32. Both ends of the plurality of sealing plates 29 are connected to the inner wall of the fixed frame 26 for rotation. One side of the plurality of sealing plates 29 abuts against the inner wall of the vent 32 and is located inside the same vent 32. The ends of the two groups of sealing plates 29 are abutted and matched, and the abutment point of the two groups of sealing plates 29 is located on the side of the partition 27 away from the pressure plate 24. Both ends of the sealing plates 29 are arc-shaped. When the sealing plates 29 rotate, one end of the sealing plates 29 is always sealed and abutted against the inner wall of the vent 32, and the other end of the sealing plates 29 abuts against the end of another group of sealing plates 29. The sealing plates 29 located in the vent 32 rotate, and the ends of the sealing plates 29 are separated or abutted, thereby closing or opening the vent 32. Therefore, the heat dissipation component is opened or closed, and whether the air inside the fixed frame 26 can circulate is controlled.

[0044] A plurality of reset springs 30 are fixedly connected to one side of the inner wall of the partition 27 close to the pressure plate 24. The reset springs 30 are always in a stretched state. The ends of the plurality of reset springs 30 are respectively fixedly connected to the plurality of sealing plates 29. The plurality of push plates 28 are respectively located inside the plurality of vents 32, and the plurality of push plates 28 are respectively squeezed and matched with the plurality of sealing plates 29.

[0045] The push plate 28 does not squeeze the sealing plate 29, the ends of the two groups of sealing plates 29 abut against each other, and the vent 32 is closed. The push plate 28 squeezes the two groups of sealing plates 29, and the return spring 30 is stretched, and the ends of the two groups of sealing plates 29 open. A certain channel is formed between the two groups of sealing plates 29, so that the vent 32 is opened. When the push plate 28 is not squeezed by external force, the return spring 30 pulls the sealing plate 29 to close and reset, and the vent 32 is closed. Whether the heat dissipation component is opened is controlled by whether the user's back squeezes the backrest 11. When the heat dissipation component is opened, it is convenient for air to flow inside and outside the fixed frame 26, so that the heat inside the backrest 11 can be carried out of the backrest 11, thereby preventing the sofa from continuously dissipating heat and wasting electricity when no one is using it.

[0046] like Figure 2 , Figure 7 and Fig. 9As shown, the inflation component includes an air pump 33, which is fixedly connected to the side of the fixed frame 26 away from the pressure plate 24. The air pump 33 is used to inflate the inside of the fixed frame 26. The air inlet end of the air pump 33 is located outside the backrest 11. An air pressure sensor 31 (model DC0-10VQBE) is fixedly connected to the inside of the fixed frame 26. The air pressure sensor 31 cooperates with the air pump 33. The air pressure sensor 31 is located on the side of the partition 27 away from the pressure plate 24.

[0047] The air pressure sensor 31 is connected and controlled by the controller with the air pump 33. When the vent 32 is closed, the space between the partition 27 and the air pump of the fixed frame 26 is space 1. At this time, space 1 is sealed, and the air pump 33 rushes air into this space. The air pressure inside the space increases, and the air pressure sensor 31 detects the air pressure inside the space. When the air pressure reaches a certain level, the air pump 33 stops running. When the extrusion component controls the heat dissipation component to open, space 2 stops sealing, the air pressure in space 2 decreases, and the air pump 33 starts running to inflate space 1 inside the fixed frame 26. The air enters the other side of the fixed frame 26 through the vent 32, and the air can circulate. When the user's back does not squeeze the backrest 11, the vent 32 is closed, space 1 is sealed, and the air pump 33 inflates the space until the air pressure reaches a certain level and then stops running.

[0048] like Figure 7 As shown, the air outlet assembly includes an air outlet pipe 34, both ends of which are equipped with one-way valves. The one-way valves allow air to flow only into the air outlet pipe 34 and not in the opposite direction. The air outlet pipe 34 is fixedly connected to the upper end of the support plate 39, and the air outlet pipe 34 is located between the fixed frame 26 and the pressure plate 24. The side wall of the air outlet pipe 34 is connected and fixedly connected with a connecting pipe 35. An operating groove 21 is commonly provided between the pillow seat 14 and the sofa frame. The connecting pipe 35 passes through the supporting plate 39 and the operating groove 21. An air pump 2 36 is fixedly connected to the lower end of the sofa frame. The end of the connecting pipe 35 is connected to the air inlet end of the air pump 2 36, and the air outlet end of the air pump 2 36 is fixedly connected with an exhaust pipe 37 for blowing air to the bottom of the sofa frame.

[0049] Air pump 1 33 and air pump 2 36 operate synchronously. Air pump 2 36 (model SC3712PM) absorbs the air carrying heat from one side of the pressure plate 24 through the connecting pipe 35 and the air outlet pipe 34, and discharges the air carrying heat to the lower end of the sofa frame through the exhaust pipe 37, thereby dehumidifying and removing dust from the bottom of the sofa frame.

[0050] like Figure 1 , Figure 2 , Figure 8As shown, a connecting column 4 is slidably connected inside the side seat 2, and a connecting groove is provided at one end of the side seat 2 close to the backrest 11, and the connecting groove is connected to the armrest 3. A cylindrical hollow is opened inside the side seat 2, and the connecting column 4 is slidably connected in the hollow. One end of the connecting column 4 passes through the side seat 2 and is set as a pressing end. The side wall of the connecting column 4 passes through a plurality of groups of through grooves 8, and elastic blocks 9 are slidably connected inside the plurality of through grooves 8. The ends of the elastic blocks 9 pass through the side seat 2, and the ends of the elastic blocks 9 are set as isosceles triangles. The inclined surface of the elastic blocks 9 is opposite to the pressing end. The inner wall of the armrest 3 is provided with a plurality of groups of card grooves 7, and the plurality of groups of card grooves 7 are arranged in a circular array. The plurality of groups of elastic card blocks 9 are all engaged with the card grooves 7. The elastic card block 9 consists of two groups of isosceles triangle card blocks and a spring. The two groups of card blocks are symmetrically arranged, and the spring is in a compressed state and is connected between the two groups of card plates 16.

[0051] A cavity 6 is opened inside the side seat 2, and a connecting column 4 passes through the cavity 6. A fixing plate 40 is fixedly connected to the side wall of the connecting column 4 located inside the cavity 6. The fixing plate 40 is slidably connected in the cavity 6. A plurality of groups of compression springs 5 ​​are fixedly connected to one side of the fixing plate 40 close to the elastic block 9, and the ends of the plurality of groups of compression springs 5 ​​are all fixedly connected to the inner wall of the cavity 6.

[0052] By pressing the pressing end of the connecting column 4, the connecting column 4 slides toward the inside of the side seat 2, the inclined surfaces of the multiple groups of elastic card blocks 9 are compressed, the multiple groups of elastic card blocks 9 shrink into the through groove 8, and the elastic card blocks 9 are disengaged from the card slot 7 inside the armrest 3, so that the armrest 3 can be rotated to a certain angle or folded, and the angle of the armrest 3 can be adjusted. Then, the pressing end is released, the compression spring 5 squeezes the fixing plate 40, and the fixing plate 40 pulls the connecting column 4 to reset, so that the multiple groups of elastic card blocks 9 are reset, and the multiple groups of elastic card blocks 9 are engaged with the card slot 7 to fix the angle of the armrest 3. The armrest 3 of the sofa can adjust the angle, which is convenient for users to lean on; it can be laid flat to increase the width of the sofa; it can be folded with the sofa cushion 10 to facilitate the storage and transportation of the sofa.

[0053] like Figure 1 , Figure 3 , Figure 5 , Figure 7 As shown, the inner wall of the operating groove 21 is rotatably connected to a connecting rod 22 at a position inside the sofa frame, and the end of the connecting rod 22 is rotatably connected to the lower end of the support plate 39. A groove 38 for the connecting rod 22 to sink into is provided on one side of the sofa cushion 10, and a pull strap 23 is fixed to one side of the backrest 11.

[0054] The backrest 11 can be supported upright on the upper end of the pillow seat 14 by the support plate 39. The support plate 39 abuts against the pillow seat 14, and the backrest 11 is connected to the sofa frame through the connecting rod 22. Therefore, the backrest 11 can be erected on the upper end of the pillow seat 14 and cannot be rotated. The user can squeeze and lean against it, pull the drawstring 23, and pull the backrest 11 forward. The backrest 11 moves in an arc shape by relying on the connecting rod 22. The backrest 11 can be moved to the upper end of the sofa cushion 10, and the connecting rod 22 sinks into the groove 38. Since the surface of the sofa cushion 10 is soft, the support plate 39 will tilt to a certain degree or lie flat at the upper end of the sofa cushion 10. The backrest 11 can be folded, and the height of the sofa backrest 11 is reduced. The user can still stand on it, but since the bottom of the backrest 11 is connected to the sofa frame through the connecting rod 22, the backrest 11 will not be separated from the sofa frame. Therefore, the backrest 11 can be pulled forward a certain distance, which is convenient for the user to lean against it.

[0055] like Figure 1 and Figure 6 As shown, the sofa cushion 10 includes three groups of elastic pads 43, the side walls of the three groups of elastic pads 43 are connected by cloth tapes, and the three groups of elastic pads 43 are folded with each other, and the lower ends of the three groups of elastic pads 43 are bonded with anti-slip layers 44 for increasing friction.

[0056] The three groups of elastic pads 43 are foldable and unfoldable, and the anti-skid layer 44 increases the friction between the elastic pads 43 and the sofa frame to prevent the elastic pads 43 from being misplaced.

[0057] A sofa frame structure of a foldable modular sofa, such as Figure 3-Figure 6 As shown, the sofa frame structure includes a sofa frame 1, which is the main frame of the sofa base. Two groups of sofa frames 1 are installed by clamping at the bottom to prevent the two groups of sofa frames 1 from detaching. The side seat 2 is fixed to one side of the sofa frame 1, and the pillow seat 14 is fixed to the back of the upper end of the sofa frame 1. The side of the sofa frame 1 away from the pillow seat 14 is slidably connected with a connecting frame 12, and the side of the connecting frame 12 away from the pillow seat 14 is slidably connected with a connecting frame 2 13, one end of the connecting frame 12 away from the pillow seat 14 is fixedly connected with a supporting foot 1 41, and one end of the connecting frame 2 13 away from the pillow seat 14 is fixedly connected with a supporting foot 2 42, and the supporting foot 1 41 and the supporting foot 2 42 respectively support the ends of the connecting frame 12 and the connecting frame 2 13.

[0058] The traditional sofa is not large enough for users to lie on their backs and rest. When multiple people need to rest on the sofa at the same time, pull the connecting frame 2 13 to pull out the connecting frame 2 13. After the connecting frame 2 13 is pulled out to a certain extent, the space between the connecting frame 2 13 and the connecting frame 1 12 cannot be stretched, and the space between the connecting frame 1 12 and the sofa frame 1 begins to extend until the space between the connecting frame 1 12 and the sofa frame 1 cannot be extended. The space between the sofa frame 1, the connecting frame 1 12 and the connecting frame 2 13 can be extended to increase the area of ​​the sofa frame. The sofa cushion 10 is extended and laid on the sofa frame 1, the connecting frame 1 12 and the connecting frame 2 13, so that multiple people can rest on the sofa. The supporting legs 1 41 and the supporting legs 2 42 support the connecting frame 1 12 and the connecting frame 2 13; by pushing the end of the connecting frame 2 13, the space between the sofa frame 1, the connecting frame 12 and the connecting frame 2 13 can be contracted, so that the area of ​​the sofa frame can be adjusted according to demand.

[0059] like Figure 3 and Figure 4 As shown, one group of the sofa frames 1 has an axle seat 1 20 and an axle seat 2 45 fixedly connected to the lower end, the axle seat 1 20 is aligned with the middle of the axle seat 2 45, the height of the axle seat 1 20 is less than the height of the axle seat 2 45, a tension spring 19 is rotatably connected to the axle seat 1 20, a clamping plate 16 is rotatably connected to the axle seat 2 45, a mounting hole 17 is provided on the clamping plate 16, a connecting rod 18 is fixedly connected to the inside of the clamping plate 16, the end of the tension spring 19 is rotatably connected to the connecting rod 18, and a clamping column 15 is fixedly connected to the lower end of another group of the sofa frames 1, the axle seat 2 45 is located between the axle seat 1 20 and the clamping column 15, and the mounting hole 17 is clamped and installed with the clamping column 15.

[0060] In order to prevent separation, the existing combination sofas are provided with a structure at the back or bottom of the sofa to clamp multiple sofas. The installation at the back causes the distance between the sofa and the wall to be too large. The installation at the bottom requires the sofa to be tilted and assembled, and then the assembled sofa is turned over. The weight is large and it is difficult to turn over. The sofa is clamped at the bottom of the sofa, and the clamping plate 16 is pried to make the clamping plate 16 stand upright. The two sets of sofa frames 1 are laid flat and docked, and a longer tool is used to squeeze the clamping plate 16 to flip the clamping plate 16. The clamping plate 16 is clamped with the clamping column 15. Since the height of the axle seat 1 20 is less than the height of the axle seat 2 45, when the clamping plate 16 is clamped with the clamping column 15, the spring pulls the clamping plate 16. If the clamping plate 16 is turned over and separated from the clamping column 15, the spring will extend to the direction, so the spring pulls the clamping plate 16 to prevent the clamping plate 16 from being separated from the clamping column 15, and the two sets of sofa frames 1 are combined and cannot be separated.

[0061] The working principle of a foldable modular sofa and a sofa frame structure provided by the present invention is as follows:

[0062] When the user's back presses the backrest 11, the pressing plate 24 is pressed, and the pressing plate 24 drives the push plate 28 to slide through the pressing rod 25. The push plate 28 presses the sealing plate 29 in the vent 32, so that the sealing plate 29 opens, the vent 32 opens, and the air pressure inside the space 1 decreases. The air pressure sensor 31 detects the decrease in air pressure, and controls the air pump 1 33 to operate through the controller. The air pump 1 33 discharges the air outside the backrest 11 into the space 1. The air flows through the vent 32, holes, and heat dissipation ports to absorb and carry the heat inside the backrest 11. The air pump 2 36 operates to absorb the air carrying the heat through the connecting pipe 35 and the air outlet pipe 34, and discharges the air carrying the heat through the exhaust pipe 37 to At the lower end of the sofa frame, the heat inside the backrest 11 can be discharged as quickly as possible, the backrest 11 has a good heat dissipation effect, and the discharged air carrying heat can dehumidify and dust the bottom of the sofa frame; when the user stands up, the pressure plate 24 is released from the extrusion, the force of the push plate 28 pushing the sealing plate 29 disappears, the reset spring 30 pulls the sealing plate 29 to reset, the vent 32 is closed, the interior of space one is sealed, and the air pump 1 33 is still running until the air pressure sensor 31 detects that the air pressure inside space one reaches a certain level, and then the air pump 1 33 and the air pump 2 36 stop running, so that the backrest 11 can dissipate heat at any time according to the usage situation, without manual control, and can be turned on and off at any time, which is convenient to use and saves electricity.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A foldable modular sofa, comprising a sofa frame, characterized in that: The sofa frames are symmetrically arranged in two groups, and the bottoms of the two groups of sofa frames are clamped and installed. The backs of the upper ends of the two groups of sofa frames are fixedly connected with pillow seats (14), and the upper ends of the pillow seats (14) are clamped with backrests (11). One side of the sofa frame is fixedly connected with a side seat (2), and the side seat (2) is rotatably connected with an armrest (3). The upper end of the sofa frame is clamped with a sofa cushion (10) at a position between the two groups of armrests (3). The bottom wall of the backrest (11) is fixedly connected to a support plate (39), the support plate (39) is in contact with the upper end of the pillow seat (14), the upper end of the support plate (39) is fixedly connected to a fixed frame (26) for maintaining the shape of the backrest (11), one side of the fixed frame (26) is fixedly connected to an inflation component for inflating the interior of the fixed frame (26), the interior of the fixed frame (26) is fixedly connected to a heat dissipation component for dissipating heat from the interior of the backrest (11), the lower end of the backrest (11) is fixedly connected to an air outlet component, the end of the air outlet component is located at the lower end of the sofa frame, the heat dissipation component cooperates with the air outlet component, the interior of the backrest (11) is slidably connected to an extrusion component, and one end of the extrusion component is extrusion-matched with the heat dissipation component.

2. A foldable modular sofa according to claim 1, characterized in that: The extrusion assembly includes a pressing plate (24), which is slidably connected to the inside of the backrest (11). The pressing plate (24) is located on a side of the fixed frame (26) close to the sofa cushion (10). A plurality of heat dissipation ports are provided through the pressing plate (24). One side of the pressing plate (24) is fixedly connected to a plurality of pressing rods (25). The plurality of pressing rods (25) all pass through one side of the fixed frame (26), and one end of the plurality of pressing rods (25) located inside the fixed frame (26) is fixedly connected to a plurality of push plates (28).

3. A foldable modular sofa according to claim 2, characterized in that: The heat dissipation assembly includes a partition (27), the partition (27) is vertically fixed to the inside of the fixed frame (26), a plurality of groups of vents (32) are formed through the partition (27), a plurality of groups of holes are formed through the side of the fixed frame (26) close to the pressure plate (24), two groups of sealing plates (29) are symmetrically connected to the inside of the plurality of vents (32), both ends of the plurality of sealing plates (29) are rotatably connected to the inner wall of the fixed frame (26), one side of the plurality of sealing plates (29) is in contact with the inner wall of the vent (32), the ends of the two groups of sealing plates (29) located inside the same vent (32) are in contact with each other, and the contact point of the two groups of sealing plates (29) is located on the side of the partition (27) away from the pressure plate (24); A plurality of reset springs (30) are fixedly connected to one side of the inner wall of the partition (27) close to the pressure plate (24), and the ends of the plurality of reset springs (30) are respectively fixedly connected to the plurality of sealing plates (29). The plurality of push plates (28) are respectively located inside the plurality of vents (32), and the plurality of push plates (28) are respectively squeezed and fitted with the plurality of sealing plates (29).

4. The foldable modular sofa according to claim 3, characterized in that: The inflation component includes an air pump (33), which is fixed to a side of the fixed frame (26) away from the pressure plate (24). The air pump (33) is used to inflate the interior of the fixed frame (26). The air inlet end of the air pump (33) is located outside the backrest (11). An air pressure sensor (31) is fixed to the interior of the fixed frame (26). The air pressure sensor (31) cooperates with the air pump (33). The air pressure sensor (31) is located on a side of the partition (27) away from the pressure plate (24).

5. The foldable modular sofa according to claim 4, characterized in that: The air outlet assembly comprises an air outlet pipe (34), the air outlet pipe (34) is fixed to the upper end of the support plate (39), and the air outlet pipe (34) is located between the fixed frame (26) and the pressing plate (24), the side wall of the air outlet pipe (34) is connected and fixed with a connecting pipe (35), an operating groove (21) is commonly provided between the pillow seat (14) and the sofa frame, the connecting pipe (35) passes through the support plate (39) and the operating groove (21), the lower end of the sofa frame is fixed with an air pump (36), the end of the connecting pipe (35) is connected to the air inlet end of the air pump (36), and the air outlet end of the air pump (36) is fixed with an exhaust pipe (37) for blowing air to the bottom of the sofa frame.

6. The foldable modular sofa according to claim 1, characterized in that: The side seat (2) is internally slidably connected with a connecting column (4), one end of the connecting column (4) passing through the side seat (2) is set as a pressing end, the side wall of the connecting column (4) is penetrated by a plurality of through grooves (8), the plurality of through grooves (8) are internally slidably connected with elastic card blocks (9), the ends of the elastic card blocks (9) pass through the side seat (2), the ends of the elastic card blocks (9) are set as isosceles triangles, the inclined surface of the elastic card blocks (9) is opposite to the pressing end, the inner wall of the armrest (3) is provided with a plurality of card grooves (7), the plurality of card grooves (7) are arranged in a circular array, and the plurality of elastic card blocks (9) are engaged with the card grooves (7); A cavity (6) is provided inside the side seat (2), the connecting column (4) passes through the cavity (6), a fixing plate (40) is fixedly connected to the side wall of the connecting column (4) located inside the cavity (6), the fixing plate (40) is slidably connected to the cavity (6), and a plurality of groups of compression springs (5) are fixedly connected to one side of the fixing plate (40) close to the elastic block (9), and the ends of the plurality of groups of compression springs (5) are all fixedly connected to the inner wall of the cavity (6).

7. The foldable modular sofa according to claim 5, characterized in that: The inner wall of the operating groove (21) is rotatably connected to a connecting rod (22) located inside the sofa frame. The end of the connecting rod (22) is rotatably connected to the lower end of the support plate (39). A groove (38) for the connecting rod (22) to sink into is provided on one side of the sofa cushion (10), and a drawstring (23) is fixed to one side of the backrest (11).

8. The foldable modular sofa according to claim 1, characterized in that: The sofa cushion (10) comprises three groups of elastic pads (43), the side walls of the three groups of elastic pads (43) are connected by cloth belts, and the three groups of elastic pads (43) are folded with each other, and the lower ends of the three groups of elastic pads (43) are all bonded with anti-slip layers (44) for increasing friction.

9. A sofa frame structure for a foldable modular sofa according to any one of claims 6-7, characterized in that: The sofa frame structure comprises a sofa frame (1), two groups of sofa frames (1) are clamped and installed at the bottom, a side seat (2) is fixed on one side of the sofa frame (1), a pillow seat (14) is fixed on the back of the upper end of the sofa frame (1), a side of the sofa frame (1) away from the pillow seat (14) is slidably connected to a connecting frame (12), a side of the connecting frame (12) away from the pillow seat (14) is slidably connected to a connecting frame (13), one end of the connecting frame (12) away from the pillow seat (14) is fixed to a supporting foot (41), and one end of the connecting frame (13) away from the pillow seat (14) is fixed to a supporting foot (42), and the supporting foot (41) and the supporting foot (42) respectively support the ends of the connecting frame (12) and the connecting frame (13).

10. The sofa frame structure of a foldable modular sofa according to claim 9, characterized in that: The lower end of one group of sofa frames (1) is fixedly connected to an axle seat 1 (20) and an axle seat 2 (45), the axle seat 1 (20) is aligned with the middle of the axle seat 2 (45), the height of the axle seat 1 (20) is less than the height of the axle seat 2 (45), the axle seat 1 (20) is rotatably connected to a tension spring (19), the axle seat 2 (45) is rotatably connected to a clamping plate (16), a mounting hole (17) is provided on the clamping plate (16), a connecting rod (18) is fixedly connected inside the clamping plate (16), the end of the tension spring (19) is rotatably connected to the connecting rod (18), the lower end of the other group of sofa frames (1) is fixedly connected to a clamping column (15), the axle seat 2 (45) is located between the axle seat 1 (20) and the clamping column (15), and the mounting hole (17) is clamped and installed with the clamping column (15).

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