CN215347934U

CN215347934U - Detachable sofa structure

Info

Publication number: CN215347934U
Application number: CN202120822384.0U
Authority: CN
Inventors: 丁晨; 潘琛璐; 黄忠建
Original assignee: Anji Longwin Furniture Co Ltd
Current assignee: Anji Longwin Furniture Co Ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-12-31
Anticipated expiration: 2031-04-21

Abstract

The utility model relates to the technical field of furniture, in particular to a detachable sofa structure which comprises a sofa seat supporting plate, a front supporting baffle plate on the front side of the sofa seat supporting plate, a left supporting side baffle plate and a right supporting side baffle plate on the left side and the right side, and a left splicing integrated framework and a right splicing integrated framework which are arranged at intervals on the left side and the right side.

Description

Detachable sofa structure

Technical Field

The utility model relates to the technical field of furniture, in particular to a detachable sofa structure.

Background

The existing sofas are of various types and usually manufactured and sold as an integral and inseparable sofa, the sofas in the prior art cannot be disassembled usually, and common consumers cannot assemble the sofas perfectly after the disassembly, so that the sofas are usually transported integrally by trucks or vans after being manufactured in factories, and the size of the sofas is larger for corridors and doors, which brings great inconvenience to the transportation. More seriously, the sofa is easy to collide with the surface of the sofa when being carried in a limited space, so that the integral sofa has larger space required by turnover and high production cost, and is inconvenient to carry at the side of a user. As a result, many detachable sofas have appeared.

As disclosed in the chinese patent with application number 201822080648.0, the sofa is assembled by a plurality of sofa main bodies, the sofa main body comprises a base, a backrest and armrests, the base and the armrests are detachably connected by a plurality of connecting pieces, the backrest and the armrests are detachably connected by a plurality of connecting pieces. However, the types of the connecting pieces adopted in the existing sofa are many, the mounting positions are many, on one hand, the structural symmetry and the stability are defective, on the other hand, the assembling of users is good due to the excessive different types and many assembling connecting pieces, the turnover and transportation of accessories are good, and the like, and the integration of the assembling and the disassembling is not good enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a detachable sofa structure with good integration.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a dismantled and assembled sofa structure, includes sofa seat backup pad preceding supporting baffle and the left side of the left and right sides of sofa seat backup pad front side support side baffle and right side support side baffle, still including the left side concatenation integrated skeleton and the right side concatenation integrated skeleton that control the interval and set up, the left side concatenation integrated skeleton including extend around and simultaneously respectively with the bottom surface of sofa seat backup pad and the right side of left side support side baffle support and lean on the horizontal bone of left side top connection that again removable connects, the downwardly extending that the horizontal bone front end body coupling of left side top connection had and simultaneously respectively support the right flank of side baffle and the trailing flank of preceding supporting baffle with the right side of left side support side baffle and support and lean on the left front connection vertical bone that again removable connection lived with the downwardly extending that the horizontal bone rear end body coupling of left side was had and support the right side of side baffle and support and lean on the left back connection vertical bone that again removable connection lived, the integrated skeleton of right side concatenation is including extending around and simultaneously respectively with the bottom surface and the right side support side baffle of sofa seat backup pad and right side support side baffle The left side support lean on the horizontal bone of the right top connection of removable connection again, the horizontal bone front end of the horizontal bone front end body coupling of right side top have downwardly extending and simultaneously respectively with the left surface of right side support side shield and the trailing flank of preceding holding shield lean on the right front connection vertical bone of removable connection again with the horizontal bone rear end body coupling of right side extend and with the left surface of right side support side shield lean on the right back connection vertical bone of removable connection again, left side front connection vertical bone left side back connection vertical bone right front connection vertical bone with the bottom surface of right back connection vertical bone all is less than the bottom surface of any one in left side support side shield, right side support side shield and the preceding holding shield.

Preferably, the left top connecting transverse rib, the left front connecting longitudinal rib and the left rear connecting longitudinal rib are all square metal tubes and are welded to form the left splicing integrated framework, and the right top connecting transverse rib, the right front connecting longitudinal rib and the right rear connecting longitudinal rib are all square metal tubes and are welded to form the right splicing integrated framework.

Preferably, the left top connecting transverse bone is provided with a left upper mounting hole which is vertically communicated and is used for being in threaded connection with the sofa seat supporting plate, the left top connecting transverse bone is further provided with a left first mounting hole which is horizontally communicated and is used for being in threaded connection with the left supporting side baffle plate, the left front connecting longitudinal bone is provided with a left front mounting hole which is vertically communicated and is used for being in threaded connection with the front supporting baffle plate, the left front connecting longitudinal bone is further provided with a left second mounting hole which is horizontally communicated and is used for being in threaded connection with the left supporting side baffle plate, and the left rear connecting longitudinal bone is provided with a left third mounting hole which is horizontally communicated and is used for being in threaded connection with the left supporting side baffle plate.

Preferably, the right top connecting transverse bone is provided with a right upper mounting hole which is vertically communicated and is used for being in threaded connection with the sofa seat supporting plate, the right top connecting transverse bone is further provided with a right first mounting hole which is horizontally communicated and is used for being in threaded connection with the right supporting side baffle plate, the right front connecting longitudinal bone is provided with a right front mounting hole which is vertically communicated and is used for being in threaded connection with the front supporting baffle plate, the right front connecting longitudinal bone is further provided with a right second mounting hole which is horizontally communicated and is used for being in threaded connection with the right supporting side baffle plate, and the right rear connecting longitudinal bone is provided with a right third mounting hole which is horizontally communicated and is used for being in threaded connection with the right supporting side baffle plate.

Preferably, the sofa seat supporting plate is formed by splicing more than two upper split plates which are arranged in the left-right direction, and the front supporting baffle is formed by splicing more than two front split plates which are arranged in the left-right direction.

Preferably, the two adjacent upper sub-plates and the two adjacent front sub-plates are detachably connected through at least one middle splicing integrated framework, the middle splicing integrated framework comprises a middle top connecting transverse bone which extends forwards and backwards, abuts against the bottom surface of the upper sub-plate and is detachably connected, a middle top connecting longitudinal bone which integrally connected with the front end of the middle top connecting transverse bone extends downwards, abuts against the rear side surface of the front sub-plate and is detachably connected with the rear end of the middle top connecting transverse bone, and a middle rear connecting longitudinal bone which integrally connected with the rear end of the middle top connecting transverse bone extends downwards.

Preferably, the bottom surfaces of the intermediate anterior connecting longitudinal frame and the intermediate posterior connecting longitudinal frame are lower than the bottom surface of any one of the left support side barrier, the right support side barrier and the anterior support barrier.

Preferably, the left rear connecting longitudinal frame and the right rear connecting longitudinal frame may be detachably connected to a rear support baffle located at a rear side of the sofa seat support plate.

Preferably, the left and right supporting side panels are protruded upwardly from the sofa seat supporting plate to form a left armrest portion and a right armrest portion, respectively.

Preferably, a backrest is arranged between the left armrest part and the right armrest part, the left armrest part and the right armrest part are respectively and fixedly connected with a first plug connector which is used for the backrest to be plugged from top to bottom and abuts against a left top connecting transverse bone and a right top connecting transverse bone, and the left side and the right side of the backrest are respectively and fixedly connected with a second plug connector matched with the first plug connector.

The utility model has the beneficial effects that: 1. the integration of the connection is better, the assembly of the basic structure of the whole sofa is completed and the structural strength of the whole sofa is ensured by the splicing integrated frameworks of the two inverted U-shaped structures, and the integrated sofa can also be used as a support structure to bear the weight above and does not need the existing sofa feet;

2. the detachability is better, the turnover transportation is convenient, and the disassembly and the assembly are convenient;

3. the universality is good, and the sofa is suitable for the production of sofas of different styles.

Drawings

FIG. 1 is a schematic perspective view of a first sofa according to the embodiment after being disassembled;

FIG. 2 is a perspective view of the assembled structure of FIG. 1;

FIG. 3 is a schematic perspective view of the framework distribution of the first sofa configuration style;

FIG. 4 is a schematic perspective view of the assembled second sofa structure in the example;

FIG. 5 is a perspective view of the rear view of FIG. 4;

FIG. 6 is a schematic perspective view of the backrest of FIG. 5 with the backrest disassembled;

FIG. 7 is a perspective view of the front side of FIG. 6;

FIG. 8 is a schematic perspective view of the structure of FIG. 4 after the structure is disassembled;

FIG. 9 is a schematic perspective view of the structure of FIG. 4 with a console box;

FIG. 10 is a perspective view of the second sofa structure assembled in accordance with the exemplary embodiment;

fig. 11 is a perspective view of the structure of fig. 10 with the rear support baffle removed.

In the figure, 1, a sofa seat supporting plate, 2, a front supporting baffle plate, 3, a left supporting side baffle plate, 4, a right supporting side baffle plate, a left splicing integrated framework, b, a right splicing integrated framework, a1, a left top connecting transverse bone, a2, a left front connecting longitudinal bone, a3, a left rear connecting longitudinal bone, b1, a right top connecting transverse bone, b2, a right front connecting longitudinal bone, b3, a right rear connecting longitudinal bone, a11, a upper left mounting hole, a121, a first left mounting hole, a13, a front left mounting hole, a122, a second left mounting hole, a123, a third left mounting hole, b11, an upper right mounting hole, b121, a first right mounting hole, b13, a front right mounting hole, b122, a second right mounting hole, b123, a third right mounting hole, c, an upper partial plate, d, a front partial plate, z, a middle splicing integrated framework, z 4, a middle splicing integrated framework, a middle connecting transverse bone, a connecting longitudinal bone, z, 2, a front connecting longitudinal bone, 3, 5. rear support baffle 30, left armrest part, 40, right armrest part, 6, backrest, 71, first plug connector, 72 and second plug connector.

Detailed Description

The following specific examples are given by way of illustration only and not by way of limitation, and it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made in the examples without inventive faculty, and yet still be protected by the scope of the claims.

In the embodiment, as shown in fig. 1 to 11, in the embodiment, because the number of the locking members s is large, only some of the locking members s are marked in the drawings, but all the locking members s are used in corresponding mounting holes, and after reading the embodiment, there is no problem of difficulty in implementing the embodiment. The sofa seat supporting plate 1 is preferably a rectangular wood plate in a flat state, the front supporting baffle plate 2 is preferably a rectangular wood plate in an upright state, the left supporting side baffle plate 3 and the right supporting side baffle plate 4 are also preferably rectangular wood plates in an upright state, the four plate blocks form an enclosing structure of the sofa base part and form a semi-enclosing interval with an opening facing downwards and backwards, the baffle plate can not be arranged at the rear side of the sofa seat supporting plate 1, of course, the baffle plate close to the rear side can also be arranged, and the structure with the baffle plate at the rear side is introduced at the rear because the rear sides of the sofas of a plurality of types can not be seen and can not use the baffle plate, and the four plates are usually too few In the structure that preceding support bezel 2, left branch brace side shield 3 and right branch brace side shield 4 surround, these two skeletons are the most important integrated point, are two discrete spaced skeletons moreover, and specific skeleton texture is: the left splicing integrated framework a comprises a left top connecting transverse bone a1 which extends forwards and backwards and is respectively abutted against the bottom surface of the sofa seat supporting plate 1 and the right side surface of the left supporting side baffle plate 3 and detachably connected with the bottom surface of the sofa seat supporting plate 1 and the right side surface of the left supporting side baffle plate 3, a downward extending part integrally connected with the front end of the left top connecting transverse bone a1 is abutted against the right side surface of the left supporting side baffle plate 3 and the rear side surface of the front supporting baffle plate 2 and detachably connected with the left front connecting longitudinal bone a2 and the rear end of the left top connecting transverse bone a1 are integrally connected with the downward extending part and abutted against the right side surface of the left supporting side baffle plate 3 and detachably connected with the left rear connecting longitudinal bone a3, the left splicing integrated framework a is a frame structure with a downward opening, and the framework can be simultaneously connected with the left supporting side baffle plate 3, the front supporting baffle plate 2 and the sofa seat supporting plate 1 and abutted against the sofa seat supporting plate 1, The front support baffle 2, the left support side baffle 3 and the right support side baffle 4 form a half-enclosed space at the upper left front corner position and the upper left rear corner position; correspondingly, the right splicing integrated framework b comprises a front and a rear extension part, and is respectively abutted against the bottom surface of the sofa seat supporting plate 1 and the left side surface of the right supporting side baffle plate 4 to form a right top connecting transverse bone b1 detachably connected with the bottom surface of the right supporting side baffle plate 1 and the left side surface of the right supporting side baffle plate 4, the right top connecting transverse bone b1 is integrally connected with the lower extension part and is respectively abutted against the left side surface of the right supporting side baffle plate 4 and the rear side surface of the front supporting baffle plate 2 to form a right front connecting longitudinal bone b2 detachably connected with the rear end of the right top connecting transverse bone b1 to be integrally connected with the lower extension part and is abutted against the right rear connecting longitudinal bone b3 detachably connected with the left side surface of the right supporting side baffle plate 4, the right splicing integrated framework b on the right side is also in a U-shaped frame structure with an opening facing downwards, and can be simultaneously connected with the left supporting side baffle plate 3, the front supporting baffle plate 2 and the sofa seat supporting plate 1 and is abutted against the sofa seat supporting plate 1, The front supporting baffle 2, the left supporting side baffle 3 and the right supporting side baffle 4 form the right front upper corner position and the right rear upper corner position of a semi-enclosed interval, then the frameworks with two discrete structure rules are directly used as integral supporting frames and connecting joint points, the front supporting baffle 2 is connected to the left splicing integrated framework a and the right splicing integrated framework b to increase the connecting strength between the left and the right and form a panel at the front side of the sofa, the sofa seat supporting plate 1 is connected to the left splicing integrated framework a and the right splicing integrated framework b to increase the connecting strength between the left and the right and form a seat plate at the upper side of the sofa, the left supporting side baffle 3 is connected to the left splicing integrated framework a to increase the strength between the front and the rear of the left splicing integrated framework a, of course, the structural firmness between the front and the rear of the integral sofa is better, the right supporting side baffle 4 is connected to the right splicing integrated framework b to increase the strength between the front and the rear of the right splicing integrated framework b, the structural firmness of the whole sofa between the front and the back is better. The left and right U-shaped frameworks are separately arranged and are U-shaped with a large opening, which is also beneficial to the detachable connection installation mode, and will be described in detail below.

Further, the bottom surfaces of the left front connecting longitudinal bone a2, the left rear connecting longitudinal bone a3, the right front connecting longitudinal bone b2 and the right rear connecting longitudinal bone b3 are all lower than the bottom surface of any one of the left support side baffle 3, the right support side baffle 4 and the front support baffle 2, and for the sake of structural beauty and stability, the bottom surfaces of the left support side baffle 3, the right support side baffle 4 and the front support baffle 2 are arranged at the same plane height as much as possible, but more importantly, the bottom surfaces of the left front connecting longitudinal bone a2, the left rear connecting longitudinal bone a3, the right front connecting longitudinal bone b2 and the right rear connecting longitudinal bone b3 need to be at a lower position so that the whole sofa is directly supported by the four longitudinal bones, that is, the four longitudinal bones of the two frameworks can be used as sofa support feet, the left front connecting longitudinal bone a2, the left rear connecting longitudinal bone a3, The right front connecting longitudinal rib b2 and the right rear connecting longitudinal rib b3 are partially exposed below the left supporting side baffle 3, the right supporting side baffle 4 and the front supporting baffle 2, so that the integration of the left framework and the right framework is stronger, the left framework and the right framework are used as supporting parts and integrated points of detachable connection of the sofa, the supporting parts can be directly used as supporting legs of the sofa, the structural strength of the whole sofa is more reliable, and the structure after detachment is more convenient to stack and turnover.

In order to enable the two frameworks to bring the effect of better detachable installation integration, the design is as follows: the left top connecting transverse bone a1, the left front connecting longitudinal bone a2 and the left rear connecting longitudinal bone a3 are all square metal tubes and are welded to form the left splicing integrated framework a, the square metal tubes can be square steel tubes, the square tubes not only have good structural strength, the outer side surface is a rectangular plane structure, has better fitting performance, has better structural compactness when being matched and connected with the sofa seat supporting plate 1, the front supporting baffle plate 2 and the left supporting side baffle plate 3, the two ninety-degree dog-ear parts above the front and the back of the formed whole framework are of a square structure, and can better support the square corner at the upper left front part and the square corner at the upper left back part of a semi-enclosed interval formed by the four plates of the sofa seat supporting plate 1, the front supporting baffle plate 2, the left supporting side baffle plate 3 and the right supporting side baffle plate 4, so that the structural firmness is better; similarly, the right top connecting transverse bone b1, the right front connecting longitudinal bone b2 and the right rear connecting longitudinal bone b3 are all square metal tubes and are welded to form the right splicing integrated skeleton b, and the left and right skeletons can adopt the same structural design.

On the basis of the structural design of the square pipe, the structure of detachable connection can be conveniently designed and optimized, in particular, the left top connecting transverse bone a1 is provided with a left upper mounting hole a11 which is vertically penetrated and is used for being in threaded connection with the sofa seat supporting plate 1, so that the left upper mounting holes a11 penetrate through the upper surface and the lower surface of the left top connecting transverse bone a1, the number of the left upper mounting holes a is preferably more than two, and the left upper mounting holes a11 are distributed at intervals from front to back, the detachable screwing installation is carried out through locking pieces s such as bolts or screws which penetrate upwards, of course, the locking member is upwardly passed through the left upper mounting hole a11 and is also screwed into the sofa seat supporting plate 1, in order to realize detachability better, the sofa seat supporting plate 1 can be embedded with nuts, and the embedded nuts can be press riveting nuts and are fixed on the sofa seat supporting plate 1 and are riveted up and down, so that the structure that the nuts are fixed on the sofa seat supporting plate 1 can be ensured to be stable; or threaded holes which penetrate through the sofa seat supporting plate 1 up and down are formed for matching with screws or bolts for locking, and the structure can influence the wood plate structure after being disassembled and assembled for many times, and is not particularly recommended to use; or the through hole of the non-threaded hole is opened on the sofa seat supporting plate 1 and the nut is configured on the upper surface for matching with the bolt or the screw, the nut can adopt a flat nut to properly reduce the convex feeling of foreign matters, and can be more comfortable, but generally, the sofa can be laid with a cushion plate, a cushion block and other structures for more comfortable sitting on the basic supporting structure of the sofa seat supporting plate 1, so that the sofa is basically irrelevant. The left top connecting transverse bone a1 may be further provided with a left first mounting hole a121 penetrating left and right for being in threaded connection with the left support side baffle 3, the same structural style is adopted, but the left first mounting hole a121 penetrates left and right, that is, penetrates left top connecting transverse bone a1 left and right side faces, the left support side baffle 3 also adopts a design of a matching structure consistent with the sofa seat support plate 1, for example, a nut or an opening hole is embedded for matching with a locking member s such as a bolt or a screw for detachable connection, the left first mounting holes a121 are preferably more than two and distributed at intervals front and back, but are installed and connected through the locking member s penetrating left. Since the upper left mounting hole a11 and the first left mounting hole a121 are both formed in the left top connecting transverse bone a1, and two opposite side surfaces of the left top connecting transverse bone a1 where the two holes are formed are different, the two holes can be formed at the same position in the front and back direction, but are preferably staggered in the front and back direction, so that the structural strength of the left top connecting transverse bone a1 can be prevented from being weakened due to too many holes formed at the same position in the front and back direction. Similarly, the front-and-back through left front connecting longitudinal bone a2 is provided with a front-and-back through left front mounting hole a13 for threaded connection with the front supporting baffle 2, the left front mounting hole a13 can also be more than two and vertically distributed on the left front connecting longitudinal bone a2 at intervals, the left front mounting hole a13 is a through hole on the front-and-back side surface of the left front connecting longitudinal bone a2, the front connecting longitudinal bone is detachably connected with the front supporting baffle 2 through a forwardly-penetrating locking member s, the front supporting baffle 2 is provided with a corresponding structure matched with the locking member s, and the aforementioned detachable structural design can also be referred to; furthermore, the left front connecting longitudinal bone a2 is further provided with left side second mounting holes a122 which are penetrated left and right and are used for being in threaded connection with the left support side baffle 3, the left side second mounting holes a122 can be two and are distributed on the left front connecting longitudinal bone a2 at intervals up and down and are used for being connected to the left support side baffle 3, the left side second mounting holes a122 are penetrated left and right and penetrate through the left and right sides of the left front connecting longitudinal bone a2, locking pieces s which are penetrated left penetrate through the left side second mounting holes a122 and are detachably connected with the left support side baffle 3, and the left front mounting holes a13 and the left side second mounting holes a122 are preferably arranged on the left front connecting longitudinal bone a2 in a staggered mode up and down. The left rear connecting longitudinal frame a3 is formed by a left rear connecting longitudinal frame a3 which is provided with left third mounting holes a123 penetrating left and right and used for being in threaded connection with the left supporting side baffle 3, the left third mounting holes a123 can also be distributed at intervals up and down, the left third mounting holes a123 are also used for being detachably connected with the left supporting side baffle 3, the left third mounting holes a123 also penetrate left and right and penetrate through left and right sides of the left rear connecting longitudinal frame a3, and a locking member s penetrating left penetrates through the left third mounting holes a123 and then is detachably connected with the left supporting side baffle 3.

The design of the detachable installation connecting structure on the side of the right splicing integrated framework b can completely refer to the left side, specifically, a right top connecting transverse bone b1 is provided with a right top installation hole b11 which is vertically communicated and is used for being in threaded connection with a sofa seat supporting plate 1, and the right top installation holes b11 can be more than two and are distributed at intervals from front to back; the right top connecting transverse bone b1 is also provided with a right first mounting hole b121 which is communicated left and right and is used for being in threaded connection with the right supporting side baffle 4, and more than two right first mounting holes b121 can be distributed at intervals front and back; the right front connecting longitudinal bone b2 is provided with a front and rear through right front mounting hole b13 for threaded connection with the front supporting baffle 2, and more than two right front mounting holes b13 can be distributed up and down; the right front connecting longitudinal frame b2 is also provided with a right second mounting hole b122 which is communicated left and right and is used for being in threaded connection with the right supporting side baffle 4, and more than two right second mounting holes b122 can be distributed at intervals up and down; and a right third mounting hole b123 which is communicated from left to right and is used for being in threaded connection with the right supporting side baffle 4 is formed in the right rear connecting longitudinal frame b3, and more than two right second mounting holes b122 can be distributed at intervals from top to bottom. The corresponding positions of the corresponding mounting holes on the sofa seat supporting plate 1, the right supporting side baffle plate 4 and the right front connecting longitudinal frame b2 can be provided with the nut or the screw hole and other matching structures, so that the locking member s can better realize detachable connection with the matching structures after penetrating through the mounting holes.

Of the aforementioned mounting holes, the left first mounting hole a121 and the right first mounting hole b121 are designed to be auxiliary holes, and can be omitted in normal cases, because these two holes are respectively used for detachably connecting with the left supporting side baffle 3 and the right supporting side baffle 4, while the left supporting side baffle 3 has a connection after the left front connecting longitudinal bone a2 and the left rear connecting longitudinal bone a3 are opened, and the right supporting side baffle 4 has a connection after the right front connecting longitudinal bone b2 and the right rear connecting longitudinal bone b3 are opened, so that the connection strength between the left side and the right side of these two plates is relatively reliable, and the connection strength between the lateral side is not too high in normal cases. Under the condition that the left side first mounting hole a121 and the right side first mounting hole b121 are not formed in the left top connecting transverse bone a1 and the right top connecting transverse bone b1 respectively, the structural integrity is better, the openings of the left side and the right side are reduced, the up-down support performance is better, and the implementation mode is also recommended, namely the left side first mounting hole a121 and the right side first mounting hole b121 are omitted. Of course, when the requirement for the left-right connection strength is higher, the left first mounting hole a121 and the right first mounting hole b121 may be opened again.

In a further optimized scheme, because the left and right lengths of the sofa are sometimes longer, if the sofa seat supporting plate 1 and the front supporting baffle plate 2 are of a single-plate structure, particularly the sofa seat supporting plate 1 needs to bear more force and has insufficient structural strength, the scheme is optimized, namely the sofa seat supporting plate 1 is formed by splicing more than two upper sub-plates c arranged in the left and right directions, and the front supporting baffle plate 2 is formed by splicing more than two front sub-plates d arranged in the left and right directions. The length of sofa is increased through the structure of concatenation, also can avoid adopting the not enough defect of structural strength that a long board brought, of course, the mosaic structure here needs have certain support in upper and lower direction, not only horizontal butt joint, specifically can adopt following mode: two adjacent go up and divide board c and two adjacent preceding boards d to connect through the removable connection of at least one middle concatenation integrated skeleton z, middle concatenation integrated skeleton z is including extending around and supporting with the bottom surface of going up board c and connect horizontal bone z1 with the middle top of removable connection again, the middle top is connected the downwardly extending that horizontal bone z1 front end an organic whole is connected and is supported to support with the trailing flank of preceding board d and connect with the removable connection the middle front connection vertical bone z2 that connects and the middle top is connected the middle back connection vertical bone z3 of downwardly extending that horizontal bone z1 rear end an organic whole is connected, also accomplish the concatenation through the design of middle concatenation integrated skeleton z promptly, can see out the frame construction that middle concatenation integrated skeleton z also is the U style of calligraphy of opening down, with the left side concatenation integrated skeleton a and the right side concatenation integrated skeleton b structural design become the same can. For the manufacturing of the middle splicing integrated skeleton z, the middle top connecting transverse bone z1, the middle front connecting longitudinal bone z2 and the middle rear connecting longitudinal bone z3 can be all square metal tubes and formed by welding. The middle splicing integrated framework z is actually arranged at the left and right spaced intervals of the left splicing integrated framework a and the right splicing integrated framework b and is positioned in a semi-enclosed area formed by four plates of the sofa seat supporting plate 1, the front supporting baffle plate 2, the left supporting side baffle plate 3 and the right supporting side baffle plate 4, but here, the middle splicing integrated framework z is mainly connected with the sofa seat supporting plate 1 and the front supporting baffle plate 2 to realize splicing, and the splicing is also detachable and has been mentioned previously: two adjacent upper sub-plates c and two adjacent front sub-plates d are detachably connected through at least one middle splicing integrated framework z. The middle splicing integrated framework z preferably adopts one or two, or even a plurality of middle splicing integrated frameworks z, and it is noted that the number of the upper sub-boards c and the length of the front sub-boards d are preferably consistent, so that the positions of the two adjacent upper sub-boards c and the two adjacent front sub-boards d spliced between the left side and the right side can be ensured to be consistent, and the middle splicing integrated framework z can be better connected. Then two specific mounting methods are adopted:

1. the middle top connecting transverse bone z1 of the middle splicing integrated framework z is provided with a middle upper mounting hole z11 which is vertically communicated, a locking member s such as a bolt upwards penetrates through the middle upper mounting hole z11 and then is detachably connected with an upper sub-plate c, and the upper sub-plate c is provided with corresponding structures such as nuts or screw holes and the like, which can refer to the structural design, wherein only one middle splicing integrated framework z is adopted, the upper sub-plate c at the splicing position is provided with two upper sub-plates, namely, one middle top connecting transverse bone z1 is used for connecting the two upper sub-plates c, the middle top connecting transverse bone z1 needs to cross the left side and the right side of the splicing seam of the two upper sub-plates c which are adjacent at the left side and the right side, namely, the middle top connecting transverse bone z1 and the two upper sub-plates c can have a part to be attached to each other for connection, the left half and the right half of the middle top connecting transverse bone z1 are respectively detachably connected with the two upper sub-plates c, therefore, at least two rows of middle upper mounting holes z11 distributed at intervals in the front and back are needed, two rows or even more than four rows are generally adopted, the number of the rows corresponding to each upper branch plate c is ensured to be consistent, more than two middle upper mounting holes z11 are arranged in each row, the number of the two rows of middle upper mounting holes z11 is the same, the positions are in one-to-one correspondence, and the symmetry and the stability of the structure are ensured. A middle front mounting hole z21 which is through from front to back is arranged on the middle front connecting longitudinal bone z2, a locking piece s such as a bolt and the like penetrates through the middle front mounting hole z21 forwards, a rear front sub-plate d is detachably connected with the middle front connecting longitudinal bone z 3578, the front sub-plate d can also be provided with corresponding structures such as a nut or a screw hole and the like, similarly, two adjacent front sub-plates d are provided, only one middle front connecting longitudinal bone z2 is provided, the middle front connecting longitudinal bar z2 is also half of the left and right half of the splicing seam crossing the two front sub-plates d and is abutted against the two front sub-plates d, and then is detachably connected with the two front sub-plates d, therefore, at least two rows of middle front mounting holes z21 are formed in the middle front connecting longitudinal frame z2, two rows or even rows more than four rows are generally adopted, the number of the rows corresponding to each front sub-plate d is guaranteed to be consistent, and the middle front mounting holes z21 in each row are distributed at intervals up and down, are equal in number and correspond to each other left and right one by one. Therefore, the left and right splicing of the couch can be completed, the installation can be completed in a detachable mode, the structural strength can be guaranteed, and the sofa has great design significance. Further, the bottom surfaces of the middle front connecting longitudinal rib z2 and the middle rear connecting longitudinal rib z3 are lower than the bottom surfaces of the left supporting side baffle 3, the right supporting side baffle 4 and the front supporting baffle 2, so that the middle front connecting longitudinal rib z2 and the middle rear connecting longitudinal rib z3 can be used as sofa supporting feet, and the bottom surface height position should be kept the same with the left front connecting longitudinal rib a2, the left rear connecting longitudinal rib a3, the right front connecting longitudinal rib b2 and the right rear connecting longitudinal rib b3, and the smoothness of the supporting is achieved. Of course, in this solution, both the upper board c and the front board d may be more than two, so the number of the middle splicing integrated frames z varies with the length of the sofa, and if there are only two upper boards c and two front boards d, in this preferred solution, only one middle splicing integrated frame z is needed, but as the number of the upper boards c and the front boards d increases, the number of the middle splicing integrated frames z increases correspondingly, because the left and right splicing positions may increase.

2. The other way is that two middle splicing integrated frameworks z are used at the splicing positions of an upper board c and a front board d, in the structure, each middle splicing integrated framework z corresponds to a group of upper boards c and front boards d, namely corresponds to an upper board c and a front board d which are the same in left and right positions, at this time, the two middle splicing integrated frameworks z are arranged on the left and right sides of a splicing seam and do not cross the splicing seam, but the left and right sides of the two middle splicing integrated frameworks z are attached to ensure the compactness of the structure, a row of middle upper mounting holes z11 which are vertically communicated and longitudinally distributed at intervals are arranged on a middle top connecting transverse bone z1 of the two middle splicing integrated frameworks z for being detachably connected with the corresponding upper boards c, and a row of middle front mounting holes z21 which are vertically communicated and longitudinally distributed at intervals are arranged on middle front connecting longitudinal bones z2 of the two middle splicing integrated frameworks z for being used for being connected with the corresponding front boards d respectively Can be detachably connected. However, in this scheme, because the two middle splicing integrated frameworks z need to be spliced left and right of the upper split plate c and the front split plate d, and most importantly, the left and right connection relationships are still needed, in this way, it is recommended to connect the two middle splicing integrated frameworks z left and right, specifically, a row of upper splicing holes z101 penetrating left and right and distributed front and back are formed in the middle top connecting transverse bone z1 of the two middle splicing integrated frameworks z, the two rows of upper splicing holes z101 are left and right in one-to-one correspondence, and then a nut is arranged on the other side of the two middle top connecting transverse bones z1 to be screwed and locked with a bolt after the locking members such as bolts penetrate through the left and right corresponding upper splicing holes z101 in the two middle top connecting transverse bones z1 in the left and right directions simultaneously, so that the installation can be completed, and the disassembly is also convenient. Further, a row of front splicing holes z201 which are through from left to right and distributed up and down are formed in the middle front connecting longitudinal frame z2 of the two middle splicing integrated frameworks z, and a row of rear splicing holes z301 which are through from left to right and distributed up and down are formed in the middle rear connecting longitudinal frame z3 of the two middle splicing integrated frameworks z, the two rows of front splicing holes z201 and the two rows of rear splicing holes z301 are in left-right one-to-one correspondence, and the front splicing holes z2 and the two rows of rear splicing holes z301 can be detachably connected through the left-right penetrating locking pieces. This kind of structure can be better in bearing capacity because for the structure that the integrated skeleton z of middle concatenation adopted square pipe, the right and left direction is upright the shape lateral wall can be more, just can need the use of some retaining members more than the first mode when the assembly.

It should be added that the front and back sizes of the left supporting side baffle 3 and the right supporting side baffle 4 are not large, and the whole single-plate structure is adopted, and the structure of a splicing plate is not needed. The front supporting baffle 2 is spliced by more than two front sub-plates d arranged in the left and right directions to form a relatively optimized mode, so that the front supporting baffle 2 is convenient to disassemble and assemble, and the packaging, the turnover and the like are easy, the front and back strength of the structure with small size is better because the size of the sub-plates is reduced, the front and back strength of the structure with small size is better, and the main bearing capacity is in the up and down direction, so that the front supporting baffle 2 adopts an integral single-plate structure, the effect is still good, the main sofa seat supporting plate 1 also adopts the structure spliced by more than two upper sub-plates c arranged in the left and right directions as far as possible, the structure is better for a long sofa, and in the two modes, the single-plate structure of the front supporting baffle 2 can replace the structure of a plurality of front sub-plates d for use, the position of the splicing seams of the front sub-plates d in the two modes can be understood as integrally connected, because the structural strength can be ensured after the structure of the upper sub-plate c and the structural design of the middle splicing integrated framework z. Of course, under the structural design of the middle splicing integrated framework z, the sofa seat supporting plate 1 can also adopt an integral single-plate structure, and the front supporting baffle plate 2 can adopt an integral single-plate structure or a split-plate structure as required, and although the effects of detachability, turnover and structural strength are slightly poor, the sofa seat supporting plate is a good implementation mode.

Preferably, the rear supporting baffle 5 located at the rear side of the sofa seat supporting plate 1 may be detachably connected to the left rear connecting longitudinal rib a3 and the right rear connecting longitudinal rib b3, the rear supporting baffle 5 may also be a rectangular wood plate structure, and correspond to the front supporting baffle 2 in the front-rear direction, such that the rear supporting baffle 5 may also block at the rear side, and if the sofa is of a common style, the rear supporting baffle 5 mainly improves the structural strength of the sofa between the left and right. The structure with the baffles on the front, the rear, the left and the right is more suitable for manufacturing a stool type sofa or a sofa footrest, and can be formed by assembling five plates of a sofa seat supporting plate 1, a front supporting baffle plate 2, a left supporting side baffle plate 3, a right supporting side baffle plate 4 and a rear supporting baffle plate 5 and a left splicing integrated framework a and a right splicing integrated framework b which are arranged on the left and the right, in the structure, the structure surrounded by the five plates of the sofa seat supporting plate 1, the front supporting baffle plate 2, the left supporting side baffle plate 3, the right supporting side baffle plate 4 and the rear supporting baffle plate 5 preferably needs a relatively closed structure, the lower side is open, because the left splicing integrated framework a and the right splicing integrated framework b need to be installed, the upper side opening in the four surrounding plate structures of the front supporting baffle plate 2, the left supporting side baffle plate 3, the right supporting side baffle plate 4 and the rear supporting baffle plate 5 needs to be sealed as much as possible, this is more compact and the sofa footrest is visible from the front, back, left and right, requiring the presence of the apron support and ensuring the integrity of the appearance. Therefore, the front supporting baffle 2, the left supporting side baffle 3, the right supporting side baffle 4 and the rear supporting baffle 5 are required to be close to each other end to end in the horizontal direction as much as possible, and although the front supporting baffle, the left supporting side baffle 3, the right supporting side baffle 4 and the rear supporting baffle 5 are not directly connected, the left splicing integrated framework a and the right splicing integrated framework b are required to be ensured to be attached to each other as much as possible, and the five plates are required to be controlled well in size, so that the left splicing integrated framework a and the right splicing integrated framework b only expose the left front connecting longitudinal frame a2, the left rear connecting longitudinal frame a3, the right front connecting longitudinal frame b2 and the right rear connecting longitudinal frame b3 to be lower than the parts which are seen from the bottom parts of the front supporting baffle, the left supporting baffle and the rear supporting baffle to serve as the supporting ground. In this structure, the structure of the integrated framework z and the split plate which are spliced in the middle can not be adopted, because the size of a common sofa footrest and the like is not very long, if the size is long, the combined structure design of the integrated framework z and the split plate which are spliced in the middle can be adopted. The connection of the rear support baffle 5 with the left and right integrated split frame a and b can be done in the following way, a left rear mounting hole a14 which is penetrated in the front and rear direction and is used for being connected with the rear supporting baffle plate 5 through screw threads is arranged on the left rear connecting longitudinal bone a3, and is detachably connected with the rear supporting baffle 5 through a locking piece which is arranged through a left rear mounting hole a14 backwards in a penetrating way, preferably more than two left rear mounting holes a14 are arranged and distributed at intervals up and down, the left rear mounting hole a14 and a left third mounting hole a123 can be arranged in a staggered way up and down, and the right side of the sofa, the right rear connecting longitudinal frame b3 is provided with a right rear mounting hole b14 which is communicated with the rear supporting baffle 5 in a front-rear mode, the right rear mounting hole b14 is preferably distributed at intervals from top to bottom, the right rear mounting hole b14 and the right third mounting hole b123 can be arranged in a vertically staggered mode, and the locking piece which is arranged through the right rear mounting hole b14 in a rear penetrating mode is detachably connected with the rear supporting baffle 5. Corresponding nuts or tapped holes or the like are provided on the rear support baffle 5 as described above for fitting these mounting holes. When the middle splicing integrated framework z is needed to be adopted in the structure, a middle rear mounting hole z31 which is through from front to back is formed in a middle rear connecting longitudinal bone z3 of the middle splicing integrated framework z, locking pieces s such as bolts penetrate through the middle rear mounting hole z31 backwards to be detachably connected with a rear supporting baffle 5, the rear supporting baffle 5 can be a single plate in one piece under the condition, a mode of a front sub-plate d can be used according to the front supporting baffle 2, the rear supporting baffle 5 is formed by splicing a plurality of rear sub-plates e spliced from left to right, and the design style of the middle rear mounting hole z31 can refer to the middle front mounting hole z 21.

To form a complete sofa, it is preferable that the left supporting side baffle 3 and the right supporting side baffle 4 both protrude upward from the sofa seat support plate 1 and respectively form a left armrest part 30 and a right armrest part 40, which are mainly used to form a part which is upward beyond the sofa seat support plate 1 at the left and right sides, and which can have a blocking part at the upper left and right sides and can be supported by hand, wherein when in use, the left supporting side baffle 3 is preferably the right part of the left armrest f1, for example, the left armrest is a rectangular or similar rectangular armrest wooden box structure, then the left supporting side baffle 3 is the right plate of the armrest wooden box, and the right supporting side baffle 4 is preferably the left part of the right armrest f2, that is, the left supporting side baffle 3 and the right supporting side baffle 4 are preferably directly formed on the armrest, and the left and right length of the armrest box is relatively short, the outer decorations of the armrest box, such as leather, sponge, sofa cloth and the like wrapped outside, are basically integrally decorated outside the whole armrest box after the whole armrest box is assembled, so the armrest box is preferably assembled in a factory in advance and is externally decorated, and the structure that the splicing seam is not seen by the whole armrest is ensured. The other sofa seat supporting plate 1, the front supporting baffle plate 2 and the rear supporting baffle plate 5 are plate structures which are used independently, so that external decoration is made in advance in a factory, and even if the plates adopt the plate dividing structure, the plate dividing structure can also carry out external decoration in advance, the decoration parts of the plate blocks have splicing gaps, so that the attractiveness is not damaged, and the decoration wrapping objects are wrapped at the positions close to the outer surface of the sofa and do not influence the assembly and disassembly of integration points in the sofa. The sofa seat supporting plate 1 can be arranged to be free from external decoration, and the sofa cushion block and other seat accessories can be paved above the sofa seat supporting plate, so that the sofa seat supporting plate can be only of a wood plate structure.

Preferably, a backrest 6 is disposed between the left arm portion 30 and the right arm portion 40, and the backrest 6 may be formed of an existing common sofa backrest board, such as a simple rectangular wooden board. And left side handrail portion 30 with right side handrail portion 40 be the erection joint respectively has the confession back 6 is from last down pegging graft and leaning on and connecting horizontal bone a1 and the first plug connector 71 on the horizontal bone b1 at left top connection, the cooperation is connected in the installation respectively to the left and right sides of back 6 the second plug connector 72 of first plug connector 71, specifically, back 6 can be upright form, also can prefer to incline to the rear, leans on like this more comfortablely, and this orientation that just needs first plug connector 71 and second plug connector 72 cooperation to peg graft also is setting up at the slant. It is important to note that in this preferred embodiment, the lower portion of the backrest 6 is supported against the left and right top connecting ribs a1 and b1, rather than against the sofa seat support plate 1, which requires that the left and right top connecting ribs a1 and b1 extend rearwardly with a portion projecting rearwardly from the sofa seat support plate 1, so that the backrest 6 and the sofa seat support plate 1 are prevented from being assembled and disassembled by abutting against each other at the upper and lower portions thereof, and can be installed or disassembled simultaneously, and the backrest 6 can be supported against the lower portions of the left and right top connecting ribs a1 and b1, and preferably that the bottom portion of the backrest 6 is supported downwardly against the lower portions of the sofa seat support plate 1 and the left and right top connecting ribs a1 and b1, so that the bottom portion of the backrest 6 is supported both downwardly against the left and right top connecting ribs a1 and 1, the backrest is supported forwards at the rear part of the sofa seat supporting plate 1, and the effect is very good for the backrest 6 which inclines towards the oblique rear part. Under the condition that there is middle concatenation integrated skeleton z, the horizontal bone z1 is connected on the middle top of middle concatenation integrated skeleton z is also the back protrusion sofa seat backup pad 1, and back 6 can also obtain the support of middle top connection horizontal bone z1 like this, and the support nature can be better.

First plug connector 71 and second plug connector 72 can adopt present plug-in complex pin thread and box, for example in the background art the public female complex structure of recess and the protruding portion that discloses in the patent of application number 201822080648.0, perhaps adopt present again, the public female complex structure of plug-in guide rail and grafting strip, first plug connector 71 and second plug connector 72 only one of them is the pin thread, then with its plug connector selection box that same position corresponds can, just also the back 6 left and right sides can all be the pin thread, can all be the box, also can be a box of pin thread, left side handrail portion 30 with the plug connector of right side handrail portion 40 as long as with the back 6 with the plug connector type of one side opposite can. Thus, the backrest 6 is relatively easily attached and detached.

In addition, the upper surface of the sofa seat supporting plate 1 and the front side surface of the backrest 6 can be preferably coated with cloth layers with magic tapes and the like, the cloth layers can be used for detachably connecting the sofa cushion and the backrest cushion, the surfaces of the sofa cushion and the backrest cushion are provided with the corresponding magic tapes, the detachable connection mode is also the detachable connection mode of the existing commonly used cushion body, and the detachable connection mode is not repeated herein.

The disassembly or assembly of the entire sofa does not specify which is first or last, because of the structural design rules, the available space is left sufficient, except for the backrest 6, which is preferably the last one to be assembled, and which is first or simultaneously the other individual components are not problematic.

While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a dismantled and assembled sofa structure, its characterized in that, including sofa seat backup pad (1), preceding support baffle (2) and left support side baffle (3) and right support side baffle (4) of the left and right sides of sofa seat backup pad (1) front side still include the left side concatenation integration skeleton (a) and the right side concatenation integration skeleton (b) that the interval set up about, left side concatenation integration skeleton (a) including extend around and simultaneously respectively with the bottom surface of sofa seat backup pad (1) and the right flank of left support side baffle (3) support and lean on the horizontal bone (a 1) is connected to the left top of connecting that again removable connect, the horizontal bone (a 1) front end body coupling down extend and simultaneously respectively with the right flank of left support side baffle (3) and the trailing flank of preceding support baffle (2) support and lean on the left front connection vertical bone (a 2) that removable connect again with the left side top connection horizontal bone (a 1) rear end body coupling down extend and support side baffle (3) down extension and with the left side support baffle (3) that the rear end body coupling down extend and support ) The right side face of the right splicing integrated framework (b) is abutted against the left rear connecting longitudinal bone (a 3) detachably connected, the right splicing integrated framework (b) comprises a right top connecting transverse bone (b 1) extending forwards and backwards and respectively abutted against the bottom face of the sofa seat supporting plate (1) and the left side face of the right supporting side baffle plate (4) and detachably connected with the right top connecting transverse bone (b 1), a downward extending part integrally connected with the front end of the right top connecting transverse bone (b 1) is abutted against the right front connecting longitudinal bone (b 2) detachably connected with the left side face of the right supporting side baffle plate (4) and the rear side face of the front supporting baffle plate (2) respectively, a downward extending part integrally connected with the rear end of the right top connecting transverse bone (b 1) is abutted against the left side face of the right supporting side baffle plate (4) and detachably connected with the right rear connecting longitudinal bone (b 3), and the left front connecting longitudinal bone (a 2), the left rear connecting longitudinal bone (a 3), the right front connecting longitudinal bone (b 2) and the left rear connecting longitudinal bone (b 3) are all lower than the rear connecting baffle plate (b 3) and the left supporting baffle plate (b 3) and the rear connecting longitudinal bone (b 3) is lower than the rear connecting longitudinal baffle plate (b 1) ) A bottom surface of any one of the right support side baffle (4) and the front support baffle (2).

2. A demountable sofa structure according to claim 1, wherein the left top connecting transversal bar (a 1), the left front connecting longitudinal bar (a 2) and the left rear connecting longitudinal bar (a 3) are all square metal tubes and welded to form the left assembled integrated skeleton (a), and the right top connecting transversal bar (b 1), the right front connecting longitudinal bar (b 2) and the right rear connecting longitudinal bar (b 3) are all square metal tubes and welded to form the right assembled integrated skeleton (b).

3. The detachable sofa structure according to claim 2, wherein the left top connecting horizontal frame (a 1) is provided with a left upper mounting hole (a 11) which is vertically penetrated and is used for being connected with the sofa seat supporting plate (1) by screw thread, the left top connecting transverse bone (a 1) is also provided with a left first mounting hole (a 121) which is communicated from left to right and is used for being in threaded connection with the left supporting side baffle (3), the left front connecting longitudinal frame (a 2) is provided with a left front mounting hole (a 13) which is penetrated in the front and back and is used for the threaded connection of the front heel supporting baffle (2), the left front connecting longitudinal frame (a 2) is also provided with a left second mounting hole (a 122) which is communicated left and right and is used for being in threaded connection with the left supporting side baffle (3), and a left third mounting hole (a 123) which is communicated left and right and is used for being in threaded connection with the left supporting side baffle (3) is formed in the left rear connecting longitudinal frame (a 3).

4. The detachable sofa structure according to claim 3, wherein the right top connecting horizontal frame (b 1) is provided with a right upper mounting hole (b 11) which is vertically penetrated and is used for being in threaded connection with the sofa seat supporting plate (1), the right top connecting transverse bone (b 1) is also provided with a right side first mounting hole (b 121) which is communicated from left to right and is used for being in threaded connection with the right supporting side baffle (4), a right front mounting hole (b 13) which is penetrated in the front and back and is used for the threaded connection of the front supporting baffle plate (2) is arranged on the right front connecting longitudinal bone (b 2), the right front connecting longitudinal frame (b 2) is also provided with a right side second mounting hole (b 122) which is communicated left and right and is used for being in threaded connection with the right supporting side baffle (4), and a right third mounting hole (b 123) which is communicated left and right and is used for being in threaded connection with the right supporting side baffle (4) is formed in the right rear connecting longitudinal frame (b 3).

5. The detachable sofa structure according to claim 1, wherein the sofa seat supporting plate (1) is formed by splicing more than two upper split plates (c) arranged in the left-right direction, and the front supporting baffle plate (2) is formed by splicing more than two front split plates (d) arranged in the left-right direction.

6. A detachable sofa structure according to claim 5, characterised in that two adjacent upper panels (c) and two adjacent front panels (d) are detachably connected by at least one intermediate split integrated skeleton (z) comprising an intermediate top connecting transversal bone (z 1) extending forwards and backwards and abutting against the bottom surface of the upper panel (c) and detachably connected, a downwardly extending intermediate front connecting longitudinal bone (z 2) integrally connected to the front end of the intermediate top connecting transversal bone (z 1) and abutting against the rear side surface of the front panel (d) and detachably connected, and a downwardly extending intermediate rear connecting longitudinal bone (z 3) integrally connected to the rear end of the intermediate top connecting transversal bone (z 1).

7. A convertible sofa structure according to claim 6, characterised in that the bottom surface of the middle front connecting longitudinal frame (z 2) and the middle rear connecting longitudinal frame (z 3) are lower than the bottom surface of any one of the left supporting side apron (3), the right supporting side apron (4) and the front supporting apron (2).

8. The removable sofa structure according to claim 1, wherein the left rear connecting stringer (a 3) and the right rear connecting stringer (b 3) are further detachably connected with a rear supporting baffle (5) located at the rear side of the sofa seat supporting plate (1).

9. A detachable sofa structure according to claim 1, characterised in that the left supporting side flap (3) and the right supporting side flap (4) are both protruding upwards from the sofa seat support plate (1) and form a left arm-rest part (30) and a right arm-rest part (40), respectively.

10. The removable sofa structure according to claim 9, wherein a backrest (6) is disposed between the left arm portion (30) and the right arm portion (40), the left arm portion (30) and the right arm portion (40) are respectively mounted with a first connector (71) for the backrest (6) to be inserted from top to bottom and abut against the left top connecting horizontal frame (a 1) and the right top connecting horizontal frame (b 1), and the left and right sides of the backrest (6) are respectively mounted with a second connector (72) for the first connector (71).