CN211748267U

CN211748267U - Detachable sofa frame construction and sofa

Info

Publication number: CN211748267U
Application number: CN202020068582.8U
Authority: CN
Inventors: 虞红潮
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-10-27
Anticipated expiration: 2030-01-13
Also published as: WO2021143536A1

Abstract

The utility model discloses a detachable sofa frame structure and a sofa, which comprises a seat part component and a backrest component, wherein the seat part component comprises a seat frame and supporting frames positioned at two sides of the seat frame, the seat frame is vertical to the supporting frames, and the seat frame and the supporting frames are connected in a plug-in manner; the backrest assembly comprises a back frame which can be selectively opened and closed, and when the backrest assembly is combined with the seat assembly, the back frame is opened according to a preset angle and then is connected with the seat assembly; the sofa comprises a detachable sofa frame structure, flexible supporting pads are arranged on the seat component and the backrest component, and flexible covers are sleeved outside the seat component and the backrest component. Compared with the prior art, the detachable sofa frame structure enables the back frame to be flatter, is beneficial to reducing the packaging volume, is convenient to transport and greatly reduces the transportation cost; in addition, the detachable sofa frame structure is simple in mounting or dismounting mode. In addition, the sofa can be spliced into two-position, three-position and the like, and the requirement of sitting by multiple people can be met.

Description

Detachable sofa frame construction and sofa

Technical Field

The utility model relates to a sofa field, in particular to detachable sofa frame construction and sofa.

Background

As a common household article, the sofa is an essential seat for family household life. However, the backrest and the main seat of the sofa in the market are usually integrally formed, the backrest and the main seat cannot be disassembled, and the volume and the weight of the sofa are usually larger and heavier, so that much inconvenience is brought to carrying and loading the sofa, and the transportation cost is increased.

CN 201320407449.0's chinese utility model patent discloses a "sofa with detachable backrest", this sofa includes base, cushion, backrest, cushion, and the both ends of sofa are equipped with the handrail, and cushion and backrest are disjunctor design, and the cushion is located on the base, and the backrest adopts swing joint with the base, the handrail adopts swing joint to be fixed with the sofa. When the box is packed, the back cushion and the backrest are disassembled and placed on the seat cushion, so that the box packing volume generated by the backrest can be reduced, the box packing amount is increased, and the freight cost is saved. Although the backrest and the main body seat are designed to be detachable, the main body seat can not be detached, and the backrest is also independent, so that the sofa still occupies a relatively large space during transportation, and the volume cannot be reduced.

Application (patent) No.: the invention patent of CN201710045158.4 discloses a detachable sofa frame structure, which comprises a bottom support frame, a left armrest frame, a right armrest frame, a rear support stick, a seat body and a backrest; the left handrail frame, the right handrail frame is connected in the bottom sprag both sides perpendicularly, the left handrail frame, the rear side upper portion of right handrail frame is passed through the back supporting rod and is connected, the pedestal includes stool and seat lid, the stool is equipped with the upper end open-ended and accomodates the chamber, the stool supports on the bottom sprag frame, place left handrail frame and right handrail frame between, the seat lid closes the upper end opening of stool, back and seat lid swing joint, and can overturn from beginning to end, the back overturns backward and supports on the back supporting rod. Although the sofa is detachably connected, the utilization rate of the sofa is improved, the storage space is increased by arranging the storage cavity on the seat, and the packaging size is increased; furthermore, the sofa structure of the patent can not be assembled completely and used normally when one of the left and right armrest frames is taken off, so that the sofa structure is only suitable for single sofas and is not suitable for being spliced into two-position sofas or three-position sofas.

Disclosure of Invention

The utility model overcomes the defects in the prior art, and firstly provides a detachable sofa frame structure, the detachable sofa frame structure and the sofa divide the seat part assembly into a seat frame and two supporting frames, the two supporting frames are positioned at the left side or the front side and the rear side of the seat frame, and the detachable sofa frame structure and the sofa are convenient to disassemble by adopting a plug-in connection mode; the backrest component is designed into a structure capable of being opened and closed, and the back frame is in a closed posture in a packaging state, so that the back frame is flatter, and the packaging volume is favorably reduced; and under the use condition, the back frame opens according to the predetermined angle, stands on seat subassembly upper end and is connected fixedly with the seat subassembly, can satisfy the requirement that the back inclines certain angle simultaneously.

The sofa comprises the detachable sofa frame structure and the flexible supporting pad, is convenient to disassemble and assemble, and can be disassembled and packed with the sofa frame structure during transportation, so that the occupied volume is minimized; in addition, according to the requirements of users, the sofa is suitable for being spliced into a double-seat sofa, a three-seat sofa and the like.

The technical scheme of the utility model is realized like this:

a detachable sofa frame structure comprises a seat part assembly and a backrest assembly, wherein the seat part assembly comprises a seat frame and support frames positioned on two sides of the seat frame, the seat frame is perpendicular to the support frames, and the seat frame is connected with the support frames in a plug-in manner; the backrest assembly comprises a back frame which can be selectively opened and closed, and when the backrest assembly is combined with the seat assembly, the back frame is opened according to a preset angle and then is connected with the seat assembly. The detachable sofa frame structure of the utility model divides the seat part component into the seat frame and two supporting frames, the two supporting frames are positioned at the left side or the front side and the rear side of the seat frame, and the detachable sofa frame structure is convenient to disassemble by adopting a plug-in connection mode; the backrest component is designed into a structure capable of being opened and closed, and the back frame is in a closed posture in a packaging state, so that the back frame is flatter, and the packaging volume is favorably reduced; and under the use condition, the back frame opens according to the predetermined angle, stands on seat subassembly upper end and is connected fixedly with the seat subassembly, can satisfy the requirement that the back inclines certain angle simultaneously.

Preferably, the seat frame and the support frame are matched with each other through an inserting mechanism in an inserting mode, the inserting mechanism comprises an inserting column and an inserting slot, the inserting column is arranged on one of the seat frame and the support frame, and the inserting slot is arranged on the other of the seat frame and the support frame. The mode of splicing and matching is adopted, so that the connection is quicker and quicker.

Preferably, the seat frame is a horizontally arranged rectangular frame, and the inserting columns are vertically and downwards fixedly arranged at four corners of the seat frame; the supporting frame is a vertically arranged U-shaped frame, the supporting frame comprises a bottom rod and vertical rods connected to the two ends of the bottom rod, and the slots are vertically arranged on the top ends of the vertical rods. One end of the U-shaped frame is open, so that the U-shaped frame is convenient to store and has little interference with other parts when being stacked; when the assembly is needed, the slot is arranged at the top end of the vertical rod, so that the position finding is rapid, and the connection is convenient.

Preferably, a bushing is further provided between the insert post and the insert groove. The presence of the bushing fills the gap between the post and the socket and eliminates the sound associated with metal-to-metal friction.

Preferably, the bushing is of a double-layer structure and comprises a base plate, a jack is arranged in the center of the base plate, an inner sleeve and an outer sleeve respectively extend downwards from the jack and the periphery of the jack, a space is reserved between the inner sleeve and the outer sleeve, a non-through notch is prefabricated on the side wall of the outer sleeve to form an elastic clamping hook, and the base plate extends outwards beyond the outer sleeve along the radial direction and forms an edge beyond the outer sleeve; the vertical rod is a hollow rod, a clamping hole is formed in the outer wall of the upper end of the hollow rod, the elastic clamping hook is clamped into the clamping hole after the lining is inserted into the slot, and the edge of the elastic clamping hook is lapped at the opening of the slot at the upper end of the vertical rod. The bushing is designed to be of a double-layer structure, and the outer sleeve is used for being clamped and matched with the vertical rod to fix the whole bushing; the inner sleeve is used for being in inserting fit with the inserting column, so that the inserting column is held, the inserting is more tight, and the gap is eliminated.

Preferably, the end of the inner sleeve remote from the shim plate is notched. Therefore, the lower end of the inner sleeve is elastic, the inserting column is convenient to store, the friction force is increased after the inserting column is inserted, and the inserting column cannot be pulled out easily.

Preferably, the support frame further comprises a reinforcing component for keeping the support frame in a stable support state, the reinforcing component is a connecting rod, connecting pins are fixedly arranged at two ends of the connecting rod, pin holes are correspondingly formed in the support frame and the seat frame, and the connecting pins at two ends of the connecting rod are correspondingly inserted into the pin holes of the support frame and the seat frame. Through the connection of connecting rod for the carriage can not take place to rock when supporting human body and take one's seat, thereby realizes more stable support.

Preferably, the supporting frame further comprises a reinforcing component for keeping the supporting frame in a stable supporting state, the reinforcing component is a connecting plate, the connecting plate is vertically arranged, two ends of the connecting plate are fixedly connected with the two supporting frames through fasteners respectively, and the connecting plate and the supporting frames are vertically arranged. The connecting plate sets up between two braced frames for form the relation of connection between the braced frame, thereby keep stable vertical support situation.

Preferably, the supporting frames are positioned at the left side and the right side of the seat frame, and the seat frame is positioned at the upper end of the supporting frame; the connecting plate is two, and two connecting plates are located the front and back both sides of seat frame respectively. The seat frame is positioned at the upper end of the supporting frame and is completely supported by the supporting frame, and when the seat frame is connected in a plugging and pulling mode, the seat frame only needs to be connected in a folding mode along one direction; the connecting plate has the effect of connecting and reinforcing, and simultaneously has the effect of shielding the space at the lower end of the seat frame, so that the whole body is more attractive.

Preferably, the backrest assembly comprises a first back frame and a second back frame, one ends of the first back frame and the second back frame are hinged, and the other ends of the first back frame and the second back frame are selectively opened or closed; in a closed state, the first back frame and the second back frame are close to each other; in the open state, an included angle smaller than 90 degrees is formed between the first back frame and the second back frame. The backrest component comprises a first back frame and a second back frame which are hinged with each other, when the backrest is in a packaging state, the first back frame and the second back frame are folded and are in parallel and close to each other, and the packaging volume is reduced; when the seat frame is used specifically, the first back frame and the second back frame are opened to form a certain included angle between the first back frame and the second back frame, so that the requirements of being connected with the seat frame and supporting a human body are met.

Preferably, one of the first back frame or the second back frame is fixedly connected with the seat frame, and the other of the first back frame or the second back frame is movably connected with the seat frame. One of the first back frame and the second back frame is fixedly connected with the seat frame, so that the connection stability can be ensured, the use safety is improved, and the safety standard is met; and the other of the two is movably connected with the seat frame, so that the connection speed can be improved.

Preferably, the first back frame is forward and the second back frame is rearward when connected with the seat assembly; the lower end of the first back frame is fixedly provided with a connecting sheet, and the connecting sheet is connected with the seat frame through screws; the lower end of the second back frame is fixedly provided with a bolt, a bolt hole is correspondingly arranged on the seat frame, and the bolt is inserted into the bolt hole. The first back frame is arranged in front and used for supporting the back of a human body; the first back frame is connected with the seat frame through screws, so that the disassembly is facilitated, and meanwhile, after the first back frame and the seat frame are locked through the screws, the first back frame and the seat frame are kept relatively fixed, the connection is firmer, and the use safety is also improved; the second back frame only needs to be inserted into the bolt hole through the bolt at the back, thereby improving the connection speed.

Preferably, the seat further comprises armrest components which are positioned at the left and right sides of the seat component and are connected with the seat component. The handrail part is favorable for supporting the arm, and improves the use comfort.

Preferably, the armrest component is a rectangular frame, which comprises an upper rod and a lower rod which are horizontally arranged and side rods connected with both ends of the upper rod and the lower rod, a crosspiece is arranged in the middle of the armrest component, the crosspiece is fixedly connected between the two side rods, the crosspiece is fixedly connected with the seat frame through a fastener, and the lower rod or the side rods are fixedly connected with the support frame through fasteners. The handrail part adopts frame type structure, does benefit to the weight reduction, is equipped with the crosspiece in the middle of the handrail part, and the crosspiece links to each other with the seat frame, and lower beam or one of the side lever link to each other with the carriage for the joint part all is in below the seat frame, uses and is not influenced.

Preferably, a first connecting plate is fixedly arranged on one of the crosspiece and the seat frame, and the first connecting plate is connected with the other one of the crosspiece and the seat frame through a screw; one of the lower rod and the supporting frame is provided with a second connecting plate, and the second connecting plate is connected with the other of the lower rod or the supporting frame through a screw. The first connecting plate and the second connecting plate are equivalent to preset connecting lugs, and after the first connecting plate and the second connecting plate are aligned with preset screw holes, screws are screwed in to realize connection.

Preferably, the crosspiece and the seat frame are connected together through screws. The two can be connected and fixed by only one or two screws.

Preferably, the seat frame is formed with a seat support surface comprising a plurality of S-shaped springs or bandages.

A sofa comprises the detachable sofa frame structure, wherein flexible supporting pads are arranged on the seat component and the backrest component, and flexible covers are sleeved outside the seat component and the backrest component.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the utility model provides a detachable sofa frame construction and sofa, compare prior art, detachable sofa frame construction make the back frame flatter, do benefit to and reduce the packing volume, convenient transportation, simultaneously greatly reduced the cost of transportation; in addition, the detachable sofa frame structure is simple in mounting or dismounting mode.

In addition, the sofa can be spliced into two-position, three-position and the like, and the requirement of sitting by multiple people can be met.

Drawings

Fig. 1 is a schematic perspective view of a seat frame and a support frame of the present invention when they are not combined;

fig. 2 is a schematic perspective view of a second embodiment of the present invention when the seat frame and the supporting frame are not combined;

fig. 3 is a schematic perspective view of the seat frame and the supporting frame combined in the embodiment of the present invention;

fig. 4 is a schematic perspective view of the connection plate and the support frame after being combined according to the embodiment of the present invention;

fig. 5 is a schematic perspective view of the connecting rod and the supporting frame combined together according to the embodiment of the present invention;

fig. 6 is a schematic perspective view illustrating the backrest assembly and the seat assembly of the present invention when they are not assembled;

fig. 7 is a first schematic perspective view of a backrest module according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of a backrest assembly according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of the backrest module and the seat module according to the embodiment of the present invention;

fig. 10 is a schematic perspective view of the armrest assembly, the backrest assembly and the seat assembly according to the embodiment of the present invention;

fig. 11 is a schematic perspective view of a sofa according to an embodiment of the present invention;

fig. 12 is a schematic perspective view of the detachable sofa frame structure after being detached and before being packed and boxed according to the embodiment of the present invention;

fig. 13 is a schematic perspective view of the seat assembly assembled into a sofa according to the embodiment of the present invention.

The figures are numbered: a seat frame 1; a support frame 2; a support surface 3; an S-shaped spring 4; a plug-in post 5; a slot 6; a bottom bar 7; a vertical rod 8; a bushing 9; a backing plate 10; a jack 11; an inner sleeve 12; an outer sleeve 13; a notch 14; an elastic hook 15; an edge 16; a snap-in hole 17; a first back frame 18; a second back frame 19; a connecting piece 20; a plug pin 21; a latch hole 22; a connecting plate 23; a connecting rod 24; a connecting pin 25; a pin hole 26; the armrest member 27; an upper rod 28; a lower bar 29; a side lever 30; a crosspiece 31; a first connecting plate 32; a second connecting plate 33; a flexible support pad 34; a connection hole 35; a screw 36.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1-13, the present invention first provides a detachable sofa frame structure, which comprises a seat component 37 and a backrest component 38.

As shown in fig. 1-4, the seat assembly 37 includes a seat frame 1 and support frames 2 located at the left and right sides of the seat frame 1, the seat frame 1 is a horizontally disposed rectangular frame, a seat support surface 3 is formed on the seat frame 1, and the seat support surface 3 includes a plurality of S-shaped springs 4; the supporting frame 2 is a vertically arranged U-shaped frame, the seat frame 1 is perpendicular to the supporting frame 2, and the seat frame 1 is located at the upper end of the supporting frame 2.

As shown in fig. 1 and 2, the seat frame 1 and the supporting frame 2 are connected in a plug-in manner, specifically: the seat frame 1 and the supporting frame 2 are matched in a splicing manner through a splicing mechanism, the splicing mechanism comprises a splicing column 5 and a slot 6, and the splicing column 5 is vertically and downwards fixedly arranged at four corners of the seat frame 1; the support frame 2 include bottom bar 7 and connect in the montant 8 at bottom bar 7 both ends, slot 6 sets up the top of montant 8.

When the seat frame needs to be assembled, the inserting columns 5 at the four corners of the seat frame 1 are inserted into the inserting grooves 6 at the top ends of the four vertical rods 8, the position finding is fast, and the connection is also convenient.

As shown in fig. 1-3, in order to fill the gap between the post 5 and the slot 6 and eliminate the sound caused by the metal-to-metal friction, a bushing 9 is further disposed between the post 5 and the slot 6, the bushing 9 is of a double-layer structure, the bushing 9 includes a backing plate 10, a jack 11 through which the post 5 passes is disposed at the center of the backing plate 10, an inner sleeve 12 and an outer sleeve 13 are respectively extended downward from the jack 11 and the periphery of the jack 11, a space is left between the inner sleeve 13 and the outer sleeve 13, the inner sleeve 12 is used for being in plug-in fit with the post 5, so that the post 5 is held to make the plug more tight and eliminate the gap, and a gap 14 is left at the end of the inner sleeve 12 away from the backing plate 10, so that the lower end of the inner sleeve 12 has elasticity, which is beneficial to accommodating the post 5, and increases the friction.

The outer sleeve 13 is used for being matched with the vertical rod 8 in a clamping mode so as to fix the whole bushing 9; specifically, an elastic hook 15 is formed by prefabricating a non-through notch on the side wall of the outer sleeve 13, and the part of the cushion plate 10, which extends outwards beyond the outer sleeve 13 in the radial direction and exceeds the outer sleeve 13, forms a rim 16; the vertical rod 8 is a hollow rod, a clamping hole 17 is formed in the outer wall of the upper end of the vertical rod 8, after the lining 9 is inserted into the slot 6, the elastic clamping hook 15 is clamped into the clamping hole 17, and the edge 16 is lapped at the opening of the slot 6 at the upper end of the vertical rod 8.

As shown in fig. 6-10, the backrest module 38 includes a first back frame 18 and a second back frame 19 that can be selectively opened and closed, wherein one end of the first back frame 18 and one end of the second back frame 19 are hinged, and the other end of the first back frame 18 and the other end of the second back frame 19 can be selectively opened or closed.

1. In the closed state, as shown in fig. 8, the first and second back frames 18 and 19 are close to each other, and are parallel and close to each other, which is beneficial to reducing the packaging volume.

2. In the open state, as shown in fig. 6, 7, 9 and 10, the first and second back frames 18 and 19 are open to form an angle of less than 90 degrees therebetween.

The backrest component is connected with the seat frame 1 in a combined manner, so that the requirement of supporting a human body is met. The following is the connection between the two specifically:

as shown in fig. 6-8, a connecting piece 20 is fixedly arranged at the lower end of the first back frame 18, and the connecting piece 20 is connected with the seat frame 1 through a screw; the lower end of the second back frame 19 is fixedly provided with a bolt 21, a bolt hole 22 is correspondingly arranged on the seat frame 1, and the bolt 21 is inserted in the bolt hole 22.

In the embodiment, the first back frame 18 is arranged in front and used for supporting the back of a human body, so that the first back frame 18 is connected with the seat frame 1 through screws, and the use safety is improved; the second back frame 19 is inserted into the pin hole 22 through the pin 21.

As shown in fig. 4, the supporting frame further comprises a reinforcing component for keeping the supporting frame 2 in a stable supporting state, the reinforcing component is a connecting plate 23, the two connecting plates 23 are perpendicular to the supporting frame 2 and are respectively located on the front side and the rear side of the seat frame 1; two ends of the two connecting plates 23 are respectively fixedly connected with the two supporting frames 2 through fasteners; specifically, a connecting hole 35 is formed in the vertical rod 8 of the support frame 2, the connecting hole 35 is a threaded hole, and after the connecting plate 23 and the vertical rod 8 lean against each other, a screw is screwed into the connecting hole 35.

As shown in fig. 5, the reinforcing member may be a connecting rod 24, connecting pins 25 are fixedly disposed at two ends of the connecting rod 24, pin holes 26 are correspondingly disposed on the support frame 2 and the seat frame 1, and the connecting pins 25 at two ends of the connecting rod 24 are correspondingly inserted into the pin holes 26 of the support frame 2 and the seat frame 1.

As shown in fig. 10, the chair further comprises armrest parts 27 for supporting the arm, wherein the armrest parts 27 are positioned at the left and right sides of the seat assembly, and the armrest parts 27 are connected with the seat assembly.

The armrest component 27 is a rectangular frame, and comprises an upper rod 28 and a lower rod 29 which are horizontally arranged and side rods 30 connected with the two ends of the upper rod 28 and the lower rod 29, a crosspiece 31 is arranged in the middle of the armrest component 27, and the crosspiece 31 is fixedly connected between the two side rods 30; a first connecting plate 32 is fixedly arranged on the seat frame 1, and the first connecting plate 32 is connected with the crosspiece 31 through screws; the support frame 2 is provided with a second connecting plate 33, and the second connecting plate 33 is connected with the lower rod 29 through screws.

When the seat cushion is required to be packaged, the seat frame 1, the supporting frame 2 and the backrest assembly are horizontally placed and stacked up and down to be in a state shown in fig. 12, then the backrest cushion and the seat cushion are stacked together and placed in a box for packaging, and the packaging volume is greatly reduced.

The utility model provides a sofa, as shown in fig. 11, comprising the detachable sofa frame structure, wherein the seat component and the backrest component are both provided with flexible supporting pads 34, the flexible supporting pads 34 are backrest cushions or cushions, the structure of the flexible supporting pads 34 is generally internal sponge, and the outside is wrapped by fabric or leather; the seat assembly and the backrest assembly are sleeved with a flexible cover to protect the sofa.

When two or three people positions are needed, the two seat parts are spliced into a whole as shown in fig. 13, and the folding chair is simple and convenient. The connection between the two seat assemblies is realized by connecting the two seat frames 1 together through screws 36.

Claims

1. The utility model provides a detachable sofa frame construction which characterized in that: the chair comprises a seat part assembly and a backrest assembly, wherein the seat part assembly comprises a seat frame and support frames positioned on two sides of the seat frame, the seat frame is perpendicular to the support frames, and the seat frame is connected with the support frames in a plug-in manner; the backrest assembly comprises a back frame which can be selectively opened and closed, and when the backrest assembly is combined with the seat assembly, the back frame is opened according to a preset angle and then is connected with the seat assembly.

2. The collapsible sofa frame structure of claim 1, wherein: the seat frame and the supporting frame are matched through the inserting mechanism in an inserting mode, the inserting mechanism comprises an inserting column and an inserting groove, the inserting column is arranged on one of the seat frame or the supporting frame, and the inserting groove is arranged on the other of the seat frame or the supporting frame.

3. The collapsible sofa frame structure of claim 2, wherein: the seat frame is a horizontally arranged rectangular frame, and the inserting columns are vertically and downwards fixedly arranged at four corners of the seat frame; the supporting frame is a vertically arranged U-shaped frame, the supporting frame comprises a bottom rod and vertical rods connected to the two ends of the bottom rod, and the slots are vertically arranged on the top ends of the vertical rods.

4. The collapsible sofa frame structure of claim 3, wherein: and a lining is arranged between the inserting column and the inserting groove.

5. The collapsible sofa frame structure of claim 4, wherein: the bushing is of a double-layer structure and comprises a base plate, a jack is arranged in the center of the base plate, an inner sleeve and an outer sleeve respectively extend downwards from the jack and the periphery of the jack, a space is reserved between the inner sleeve and the outer sleeve, a non-through notch is prefabricated on the side wall of the outer sleeve to form an elastic clamping hook, and the base plate extends outwards beyond the outer sleeve along the radial direction and forms an edge beyond the outer sleeve; the vertical rod is a hollow rod, a clamping hole is formed in the outer wall of the upper end of the hollow rod, the elastic clamping hook is clamped into the clamping hole after the lining is inserted into the slot, and the edge of the elastic clamping hook is lapped at the opening of the slot at the upper end of the vertical rod.

6. The collapsible sofa frame structure of claim 5, wherein: the end of the inner sleeve remote from the shim plate is notched.

7. The collapsible sofa frame structure of claim 1, wherein: the support frame is characterized by further comprising a reinforcing component used for enabling the support frame to keep stable support situation, the reinforcing component is a connecting rod, connecting pins are fixedly arranged at two ends of the connecting rod, pin holes are correspondingly formed in the support frame and the seat frame, and the connecting pins at two ends of the connecting rod are correspondingly inserted into the pin holes of the support frame and the seat frame.

8. The collapsible sofa frame structure of claim 1, wherein: the supporting frame is characterized by further comprising a reinforcing assembly used for enabling the supporting frames to keep stable supporting, the reinforcing assembly is a connecting plate, the connecting plate is vertically arranged, two ends of the connecting plate are fixedly connected with the two supporting frames through fasteners respectively, and the connecting plate and the supporting frames are vertically arranged.

9. The collapsible sofa frame structure of claim 8, wherein: the supporting frames are positioned at the left side and the right side of the seat frame, and the seat frame is positioned at the upper end of the supporting frame; the connecting plate is two, and two connecting plates are located the front and back both sides of seat frame respectively.

10. The collapsible sofa frame structure of claim 1, wherein: the backrest assembly comprises a first back frame and a second back frame, one ends of the first back frame and the second back frame are hinged, and the other ends of the first back frame and the second back frame are selectively opened or closed; in a closed state, the first back frame and the second back frame are close to each other; in the open state, an included angle smaller than 90 degrees is formed between the first back frame and the second back frame.

11. The collapsible sofa frame structure of claim 10, wherein: one of the first back frame or the second back frame is fixedly connected with the seat frame, and the other of the first back frame or the second back frame is movably connected with the seat frame.

12. The collapsible sofa frame structure of claim 11, wherein: when connected with the seat component, the first back frame is in front, and the second back frame is behind; the lower end of the first back frame is fixedly provided with a connecting sheet, and the connecting sheet is connected with the seat frame through screws; the lower end of the second back frame is fixedly provided with a bolt, a bolt hole is correspondingly arranged on the seat frame, and the bolt is inserted into the bolt hole.

13. The collapsible sofa frame structure of claim 1, wherein: the seat component is characterized by further comprising armrest components, wherein the armrest components are located on the left side and the right side of the seat component, and the armrest components are connected with the seat component.

14. The collapsible sofa frame structure of claim 13, wherein: the handrail component is a rectangular frame, and comprises an upper rod and a lower rod which are horizontally arranged and side rods connected with the two ends of the upper rod and the lower rod, wherein a crosspiece is arranged in the middle of the handrail component and fixedly connected between the two side rods, the crosspiece is fixedly connected with the seat frame through a fastener, and the lower rod or the side rods are fixedly connected with the supporting frame through fasteners.

15. The collapsible sofa frame structure of claim 14, wherein: one of the crosspiece and the seat frame is fixedly provided with a first connecting plate, and the first connecting plate is connected with the other one of the crosspiece and the seat frame through a screw; one of the lower rod and the supporting frame is provided with a second connecting plate, and the second connecting plate is connected with the other of the lower rod or the supporting frame through a screw.

16. The collapsible sofa frame structure of claim 14, wherein: the crosspiece is connected with the seat frame through screws.

17. The collapsible sofa frame structure of claim 1, wherein: the seat frame is provided with a seat supporting surface, and the seat supporting surface comprises a plurality of S-shaped springs or bandages.

18. A sofa is characterized in that: including the removable sofa frame structure of any one of claims 1-17, having flexible support pads on both the seat and back assemblies, and a flexible cover covering the seat and back assemblies.