CN219109069U - Detachable sofa - Google Patents

Abstract

The utility model discloses a detachable sofa, which comprises a mechanical stretching device for driving the sofa to move and a sofa plate arranged outside the mechanical stretching device, wherein the mechanical stretching device comprises two mechanism pieces which are bilaterally symmetrical and are arranged at intervals, and the two mechanism pieces are detachably connected through a linkage assembly; the sofa plate comprises a seat, a footstool and a backrest, and the seat, the footstool and the backrest are all detachably connected to the mechanical stretching device; when the sofa is packed, the backrest, the footstool and the seat are detached from the mechanical stretching device, the two mechanism pieces are separated from the linkage assembly, and the backrest, the footstool, the seat, the linkage assembly and the two mechanism pieces form an independent piece to be packed; the space utilization rate of the to-be-packaged parts during packaging and transportation is further improved, adverse effects of the middle part of the traditional mechanical stretching device on the space utilization rate are eliminated, the sofa plates can be flexibly arranged, the packaging and transportation cost is finally reduced, and the benefit of manufacturers is improved.

Description

Detachable sofa

Technical Field

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

Background

Nowadays, a multifunctional sofa gradually becomes one of necessary furniture in daily life, people can sit on the sofa for office work or lie on the sofa for rest and relaxation, and the sofa can correspondingly adjust the leaning and leaning. Most of the structures of the existing multifunctional sofas are provided with a metal mechanical stretching device for realizing the movement of the sofas below a seat frame of the sofas; mechanical stretching means such as those shown in patent applications "201810055526.8", "201921265059.8", etc.; such mechanical stretching devices generally comprise: the foot stool assembly, the cushion support assembly and the backrest assembly can also be said that the mechanical stretching device generally comprises a left mechanical stretching unit and a right mechanical stretching unit which are symmetrical, and the mechanical stretching units are connected together through a driving pipe and a torsion preventing pipe to form an integral mechanical stretching device; the device is assembled by manufacturers of mechanical stretching devices, and films are wound outside the device to keep the integrity of the device, and then the device is uniformly shipped to manufacturers for producing sofas; naturally, there are also cases where sofa manufacturers self-produce mechanical stretching devices.

The sofa manufacturer processes the device according to the corresponding mechanical stretching device and combines the corresponding sofa modeling, such as fixedly connecting a seat frame on a seat mounting plate of a cushion support assembly of the device in advance, and packaging the sofa assembly according to the order of a user or a seller, and besides the mechanical stretching device connected with the seat frame, the sofa armrest, the sofa backrest, the sofa seat, the seat cushion and other parts are also arranged; finally, after the user unpacks the package, the user inserts the armrests at two sides of the seat frame, and the backrest and the seat are connected well; that is, from an assembly perspective, sofa manufacturers leave cumbersome pre-installation work to themselves, and convenience to consumers; this is not a thick matter of itself, and almost all sofa manufacturers are such modes, and there are no differences in details of the sofa shape and style, the structure of the machine frame, and the like.

However, at present, the increasingly expensive freight is that the packing mode brings about the problem that the packing volume cannot be compressed, or the size of the sofa is reduced, such as the width and the height of armrests are compressed, so that the comfort is reduced; or the article is made from the detachable connection mode between the soft package and the seat or the back, but in any case, the maximum volume saving can not be achieved all the time, and because the inside of the mechanical stretching device is hollow, the space can not be fully utilized, and therefore, a part of packaging space is always wasted. In summary, the combination of the mechanical stretching device and the seat frame, which have been formed into an assembled configuration, has been formed into a fixed configuration, which, although the manufacturer has previously completed a complex assembly to facilitate the consumer, has a great impact on the package size and affects the whole logistics process (from the device manufacturer to the sofa manufacturer, to the dealer, and finally to the consumer), greatly increasing the cost of package transportation.

Therefore, a sofa which breaks the conventional assembly form is needed, so that the packaging space of the sofa can be fully utilized.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a detachable sofa which is divided into a mechanical stretching device and sofa plates arranged outside the mechanical stretching device, wherein mechanism plates at the left side and the right side of the mechanical stretching device are detachably connected through a linkage assembly, a backrest, a footstool and a seat of the sofa plates are also detachably arranged on the mechanical stretching device, and when in packaging, the backrest, the footstool and the seat are detached from the mechanical stretching device, and then the two mechanism plates are separated from the linkage assembly, so that independent to-be-packaged pieces are formed, and the independent to-be-packaged pieces are more beneficial to improving the space utilization rate during packaging, so that the cost of packaging and transportation is reduced.

The technical scheme of the utility model is realized as follows:

the detachable sofa comprises a mechanical stretching device for driving the sofa to move and a sofa plate arranged outside the mechanical stretching device, wherein the mechanical stretching device comprises two mechanism pieces which are bilaterally symmetrical and are arranged at intervals, and the two mechanism pieces are detachably connected through a linkage assembly; the sofa plate comprises a seat, a footstool and a backrest, and the seat, the footstool and the backrest are all detachably connected to the mechanical stretching device; when the sofa is packed, the backrest, the footstool and the seat are detached from the mechanical stretching device, the two mechanism pieces are separated from the linkage assembly, and the backrest, the footstool, the seat, the linkage assembly and the two mechanism pieces all form an independent piece to be packed.

The seat, the footstool and the backrest can be independently packaged, the mechanical stretching device can be detached by disassembling the linkage assembly, the linkage assembly and the mechanism sheets can be independently packaged, so that the seat, the footstool, the backrest, the linkage assembly and the two mechanism sheets form independent pieces to be packaged, the pieces to be packaged are further distributed to improve the space utilization rate during packaging and transportation, the adverse effect of the middle part of the traditional mechanical stretching device on the space utilization rate is eliminated, the sofa plates can be distributed more flexibly, the packaging and transportation cost is finally reduced, and the benefit of manufacturers is improved.

In this solution, the detachable connection is not simply screwed, since the whole screwed connection greatly increases the assembly effort of the consumer, and the time and operation are cumbersome, and the specific detachable connection is described in the following preferred embodiments.

Preferably, the mechanism piece comprises a fixed plate, a foot rest connecting rod assembly, a seat connecting rod assembly and a back connecting rod assembly, wherein the foot rest connecting rod assembly, the seat connecting rod assembly and the back connecting rod assembly are all connected with the fixed plate and selectively drive the foot rest connecting rod assembly, the seat connecting rod assembly and the back connecting rod assembly of the two-side mechanism piece to move relative to the fixed plate by the linkage assembly; the seat is detachably connected to the seat link assembly, the footrest is detachably connected to the leg rest link assembly, and the backrest is detachably connected to the backrest link assembly. In this scheme mechanism piece includes seat link assembly, and seat can also move after installing seat link assembly, and this dismouting formula sofa is seat, foot rest and the multi-functional sofa of back homoenergetic promptly, and this kind of comparatively complicated sofa accessible above-mentioned scheme of function carries out the dismouting, and this patent dismouting structure's application scope is wide.

Preferably, the mechanism piece comprises a base, a foot rest connecting rod assembly and a back connecting rod assembly, wherein the foot rest connecting rod assembly and the back connecting rod assembly are connected with the base and selectively drive the foot rest connecting rod assembly and the back connecting rod assembly of the mechanism piece at two sides to move relative to the base by the linkage assembly; the seat is detachably connected to the base, the footstool is detachably connected to the leg rest connecting rod assembly, and the backrest is detachably connected to the backrest connecting rod assembly. In this scheme the mechanism piece does not include a seat connecting rod subassembly, and the direct detachably of seat installs on the base, so the seat is motionless, and this dismouting formula sofa is only the multi-functional sofa that footstool and back can move promptly, and this kind of comparatively traditional single sofa also can be dismantled and assembled through above-mentioned scheme, reflects the application scope of this patent dismouting structure extensively, especially divide into the scheme of a set of linkage subassembly and two mechanism pieces with mechanical stretching device, and the benefit of split is in need not to consider the function and the type of mechanism piece like this, only splits to the structure of current mainstream mechanical stretching device, and application scope is wide.

Preferably, the sofa plate further comprises armrests, the mechanism piece comprises a base plate which is relatively static with the ground, and the armrests are arranged on the base plate and form the same piece to be packaged with the mechanism piece. The armrests are arranged on the mechanism pieces and can be fixedly connected or detachably connected, and the adverse effect on the space utilization rate of the package can be avoided by considering the position relation (adjacent close fit) of the armrests and the mechanism pieces in the sofa, so that the armrests and the mechanism pieces are fixedly connected to form a whole, namely the same piece to be packaged, and the assembly work of consumers can be reduced.

Preferably, the armrests are connected with the base plate through a transition piece, the base plate is correspondingly provided with a supporting platform extending outwards, the transition piece is fixedly arranged on the supporting platform, and the armrests are fixedly arranged on the side faces of the transition piece.

Preferably, the seat comprises a square seat frame and a cushion mounted on the seat frame, and the seat frame surrounds the mechanical stretching device and is detachably connected with the transition piece. In order to disassemble the mechanical stretching device, the parts of the seat, the backrest and the footstool, which are connected with the mechanism sheets at both sides, need to be disassembled, and then the linkage assembly is disassembled, so that the two mechanism sheets are not connected.

Preferably, the seat frame comprises two connecting pipes positioned at the left part and the right part of the seat frame, the connecting pipes are lapped above the transition piece, the connecting pipes are provided with connecting lugs which extend downwards, and the connecting lugs are detachably connected with the transition piece through screws; the connecting pipe is also provided with a mounting pin which is positioned below the connecting pipe and protrudes downwards from the connecting pipe, and the mounting pin also comprises a round table positioned at the lower end of the mounting pin; the end of the transition piece is correspondingly provided with a mounting groove, and the mounting pin enters the mounting groove and abuts against the transition piece through the round table. The detachable connection method of the seat frame and the transition piece, namely the detachable connection method of the seat and the mechanism piece, is simpler and more convenient than the method of locking by screws, and is easy to operate.

Preferably, the mechanism piece comprises a back connecting piece positioned at the rear part, the back connecting piece protrudes upwards from the seat part and is inserted into the backrest, and the back connecting piece is detachably connected with the backrest.

Preferably, the foot rest connecting rod assembly comprises a foot rest connecting piece positioned at the front end part, and the foot stool is arranged on the foot rest connecting piece and detachably connected through the plug-in assembly. A detachable connection method of a footstool and a mechanism piece.

Preferably, the plug assembly comprises a plug and a socket having a socket hole, the plug is fixed on one of the leg rest connecting piece or the footstool, the socket is fixed on the other, and the plug is inserted into the socket hole of the socket and locked in the socket hole through an elastic locking piece. The concrete implementation method of the plug-in assembly can be locked after the plug pin is inserted into the jack, thereby facilitating the installation of the footstool and further simplifying the installation work of consumers.

The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:

1. the seat, the footstool and the backrest can be independently packaged, the mechanical stretching device can be detached by disassembling the linkage assembly, the linkage assembly and the mechanism sheets can be independently packaged, so that the seat, the footstool, the backrest, the linkage assembly and the two mechanism sheets form independent pieces to be packaged, the pieces to be packaged are further distributed to improve the space utilization rate during packaging and transportation, the adverse effect of the middle part of the traditional mechanical stretching device on the space utilization rate is eliminated, the sofa plates can be distributed more flexibly, the packaging and transportation cost is finally reduced, and the benefit of manufacturers is improved.

2. In the scheme, the detachable connection mode is not just simply screwing, because the whole screwing can greatly increase the assembly work of consumers, the time is long and the operation is troublesome, and the specific detachable connection mode is described in the preferred scheme and the embodiment; for example, the detachable connection method of the seat part and the mechanism piece is realized by a locking screw with one end entering the installation groove through an installation pin and the detachable connection method of the footstool and the mechanism piece is realized by a plug-in component with a locking function.

3. The detachable sofa can be a multifunctional sofa with only a footstool and a backrest capable of moving, and can also be a multifunctional sofa with a seat, a footstool and a backrest capable of moving; the mechanical stretching device is divided into a group of linkage components and two mechanism pieces, so that the mechanical stretching device has the advantages that the functions and types of the mechanism pieces are not needed to be considered, and the mechanical stretching device is split only aiming at the structure of the current mainstream mechanical stretching device and is wide in application range.

Drawings

FIG. 1 is a schematic perspective view of a sofa according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a sofa according to an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of the sofa according to the first embodiment of the present utility model;

fig. 4 is a schematic diagram of a second perspective structure of the sofa according to the embodiment of the utility model after the sofa is disassembled;

FIG. 5 is a schematic perspective view of a mechanism sheet according to an embodiment of the present utility model;

FIG. 6 is a schematic perspective view of a mechanism plate and a handrail according to an embodiment of the present utility model;

FIG. 7 is a schematic perspective view of a transition piece disposed on a mechanism piece in an embodiment of the present utility model;

FIG. 8 is a schematic perspective view of a seat frame according to an embodiment of the present utility model;

FIG. 9 is a schematic perspective view of a seat frame mounted to a transition piece in an embodiment of the utility model;

FIG. 10 is a schematic perspective view of a plug assembly according to an embodiment of the present utility model;

FIG. 11 is a schematic perspective view of the socket mounted on the leg rest connector in an embodiment of the utility model;

fig. 12 is a schematic perspective view of a socket according to an embodiment of the present utility model;

FIG. 13 is a front view of the spring lock in an embodiment of the utility model;

FIG. 14 is a side view of the control assembly mounted on a mechanism wafer in an embodiment of the present utility model;

FIG. 15 is a side view of the drive assembly mounted on the mechanism wafer in an embodiment of the present utility model;

FIG. 16 is a top view of the drive tube and mounting tube of the present utility model after the drive tube is connected in an embodiment;

FIG. 17 is a schematic perspective view showing the connection of the mounting tube to the drive assembly in an embodiment of the present utility model;

FIG. 18 is a schematic perspective view of a second sleeve according to an embodiment of the present utility model;

FIG. 19 is a cross-sectional view of a second sleeve in an embodiment of the utility model;

FIG. 20 is a schematic perspective view showing the first sleeve mounted on the mounting tube in an embodiment of the present utility model;

FIG. 21 is a schematic perspective view of a baffle on a driving tube according to an embodiment of the present utility model;

FIG. 22 is a schematic perspective view of the ring tube mounted on the first and second drive rods in an embodiment of the utility model;

FIG. 23 is a schematic perspective view of a first transmission rod according to an embodiment of the present utility model;

fig. 24 is a schematic perspective view of an annular tube in an embodiment of the present utility model.

The reference numerals are as follows: a mechanical stretching device 1; a mechanism piece 2; a linkage assembly 3; a drive tube 31; a baffle 311; a ring tube 32; a seat 4; a seat frame 41; a front pipe 411; a rear tube 412; a connection pipe 413; a mounting pin 414; round table 4141; a footstool 5; a footrest 51; a base 7; a substrate 71; a support platform 711; a lug 712; avoidance holes 713; a base 72; leg rest link assembly 8; leg rest connection 81; a front side plate 811; a circular hole 812; a back link assembly 9; a back connection piece 91; a handrail 10; a transition piece 11; a mounting groove 111; a body rail 112; a long vertical bar 113; a short vertical bar 114; a connecting lug 12; a plug assembly 13; a plug 131; a head 1311; tail 1312; a body 1313; ring groove 1314; a clamping portion 1315; a jack 132; a socket 133; side slots 1331; a stopper 1332; a connection plate 134; a resilient locking member 14; a limit end 141; an entry end 142; a snap lever 1421; a welcome portion 14211; a locking lever 143; an opening 144; a control assembly 15; a joystick 151; pull ring 1511; a push rod 152; a boss 1521; a fixing lever 153; a drive assembly 16; a rotating lever 161; a connection hole 1611; a mounting plate 1612; a drive lever 162; a spring 17; a mounting tube 19; a first sleeve 20; a first mounting hole 201; a second sleeve 21; a chute 211; a second mounting hole 212; a first transmission lever 22; a second transmission rod 23; an adjustment slot 24; a clamping groove 25; a boss 251; a connecting post 26; a locking portion 261; a stopper 262.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

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

In the description of the present utility model, the term "at least one" refers to 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 embodiments of the present utility model are as follows:

as shown in fig. 1-4, the utility model provides a detachable sofa, which comprises a mechanical stretching device 1 for driving the sofa to move and a sofa plate arranged outside the mechanical stretching device 1, wherein the mechanical stretching device 1 comprises two mechanism pieces 2 which are symmetrical left and right and are arranged at intervals, and the two mechanism pieces 2 are detachably connected through a linkage assembly 3; the sofa plate comprises a seat 4, a footstool 5 and a backrest (not shown), and the seat 4, the footstool 5 and the backrest are all detachably connected to the mechanical stretching device 1; when the sofa is packed, the backrest, the footstool 5 and the seat 4 are detached from the mechanical stretching device 1, the two mechanism pieces 2 are separated from the linkage assembly 3, and the backrest, the footstool 5, the seat 4, the linkage assembly 3 and the two mechanism pieces 2 form a single to-be-packed piece.

The seat 4, the footstool 5 and the backrest can be independently packaged, the mechanical stretching device 1 can be disassembled through the disassembly of the linkage assembly 3, the linkage assembly 3 and the mechanism pieces 2 can be independently packaged, so that the seat 4, the footstool 5, the backrest, the linkage assembly 3 and the two mechanism pieces 2 form independent to-be-packaged pieces, the to-be-packaged pieces are further distributed to improve the space utilization rate during packaging and transportation, the adverse effect of the middle part of the traditional mechanical stretching device 1 on the space utilization rate is eliminated, the sofa plates can be distributed more flexibly, the packaging and transportation cost is finally reduced, and the benefit of manufacturers is improved.

In particular, the backrest is generally massive in shape; the seat 4 includes a seat frame 41 in a rectangular shape and a seat cushion (not shown) attached to the seat frame 41, and is formed in a block shape as a whole; the footrest 5 includes a footrest 51 and a foot pad (not shown), and is also block-shaped as a whole; the mechanism piece 2 comprises a plurality of flat connecting rods, the whole mechanism piece 2 formed by the mechanism pieces is also in a flat plate shape, and the linkage assembly 3 can comprise a plurality of rod pieces, so that a plurality of to-be-packaged pieces split from the sofa are in a block shape, a plate shape or a rod shape, the space arrangement is facilitated, and the space utilization rate is increased.

Specifically, as shown in fig. 5, the mechanism piece 2 includes a base 7, a foot rest link assembly 8, and a back link assembly 9, and the foot rest link assembly 8 and the back link assembly 9 are connected to the base 7, and the foot rest link assembly 8 and the back link assembly 9 of the both-side mechanism piece 2 are selectively driven to move relative to the base 7 by the linkage assembly 3; the seat part 4 is detachably connected to the base 7, the footstool 5 is detachably connected to the foot rest connecting rod assembly 8, and the backrest is detachably connected to the back connecting rod assembly 9; the specific structure of the mechanical stretching device 1, that is, the mechanism piece 2, is not described in detail, wherein the connection of each connecting rod and the movement of the mechanism piece 2 and the mechanical stretching device 1 are not the focus of protection of this patent.

The multifunctional sofa can be applied to a multifunctional sofa with a seat 4, a footstool 5 and a backrest capable of moving, namely, the mechanism piece 2 comprises a fixed plate (relative to a base 7), a foot rest connecting rod assembly 8, a seat connecting rod assembly and a back connecting rod assembly 9, and compared with the scheme, the multifunctional sofa has the seat connecting rod assembly which is connected to the fixed plate and can move relative to the fixed plate, and the seat 4 is connected to the seat connecting rod, so that the movement of the seat 4 is realized; the split sofa has wide application range, and the mechanical stretching device 1 is divided into a group of linkage assemblies 3 and two mechanism pieces 2, so that the split sofa has the advantages that the functions and types of the mechanism pieces 2 are not required to be considered, and the split sofa is only split for the structure of the main flow mechanical stretching device 1 at present, so that the application range is wide; in this embodiment, the above scheme of the seatless link assembly is selected.

Before describing the connection of the seat 4 to the mechanical stretching device 1, the connection of the handrail 10 will be described:

as shown in fig. 2, 4, 5 and 6, the base 7 includes a base plate 71 and a base 72, the base plate 71 and the base 72 are stationary relative to the ground, the mechanism piece 2 is a fixed member, and the leg rest link assembly 8 and the back link assembly 9 are moving members; the base 72 is located below the base plate 71 and is supported as a main body of the mechanism piece 2; the sofa plate further comprises two armrests 10, wherein the two armrests 10 are respectively arranged at two sides of the mechanical stretching device 1, and the armrests 10 at two sides are respectively connected with the base plates 71 in the two mechanism sheets 2 and form the same piece to be packaged.

The armrest 10 is generally in a block shape, and the armrest 10 is mounted on the mechanism piece 2, either in a fixed connection or in a detachable connection, so that the armrest 10 and the mechanism piece 2 can be fixedly connected to form a whole, namely the same piece to be packaged, in consideration of the position relation (adjacent close contact) of the armrest 10 and the mechanism piece 2 in the whole sofa, the space utilization of packaging is not adversely affected, and the assembly work of consumers can be reduced.

Specifically, as shown in fig. 6 and 7, a transition piece 11 is disposed between the handrail 10 and the base plate 71, and the handrail 10 and the base plate are connected by the transition piece 11, and the transition piece 11 is a pipe; the base plate 71 is cut by itself to form a supporting platform 711, the supporting platform 711 is bent outwards and downwards to enable the supporting platform 711 to extend outwards and protrude out of the base plate 71, the transition piece 11 is fixedly erected and locked on the supporting platform 711 from top to bottom, the handrail 10 is fixedly arranged on the side face of the transition piece 11 through screws, and the pipe diameter of the transition piece 11 is smaller than the outwards extending width of the supporting platform 711, so that the whole mechanism of the handrail 10 and the mechanism piece 2 is more compact, and the packaging space is reduced.

The seat frame 41 surrounds the upper part of the mechanical stretching device 1 and is detachably connected with the transition piece 11, specifically, as shown in fig. 8 and 9, the seat frame 41 comprises a front pipe 411, a rear pipe 412 and two connecting pipes 413 positioned at the left part and the right part of the front pipe 411, the front pipe 411 is positioned at the front part and is connected with the rear pipe 412 positioned at the rear part through the two connecting pipes 413, the connecting pipes 413 are lapped above the transition piece 11, the inner side of the position, which is in front of the middle part, of the connecting pipes 413 is fixedly connected with a connecting lug 12 which extends downwards, the transition piece 11 at the side is fixedly connected with a connecting lug 12 which extends upwards, the connecting lug 12 on the connecting pipe 413 extends downwards to the side of the transition piece 11 and is fixedly connected with the transition piece 11 through screws, and the connecting lug 12 on the transition piece 11 extends upwards to the side of the connecting pipe 413 and is fixedly connected with the connecting pipe 413 through screws; a cylindrical mounting pin 414 is arranged at the rear part of the connecting pipe 413, the mounting pin 414 is positioned below the connecting pipe 413 and protrudes downwards from the connecting pipe 413, the mounting pin 414 also comprises a round table 4141 positioned at the lower end of the mounting pin, the rear end part of the transition piece 11 is correspondingly provided with a mounting groove 111 from back to front, and the mounting pin 414 enters the mounting groove 111 and is abutted against the lower surface of the transition piece 11 by the round table 4141; the upper end of the mounting pin 414 is provided with threads, when the seat frame 41 is arranged above the transition piece 11, the seat frame 41 is moved to enable the mounting pin 414 to be aligned with the mounting groove 111 and enable the mounting pin 414 to be pushed into the mounting groove 111, the mounting pin 414 is rotated to adjust the round table 4141, the round table 4141 is abutted against the lower surface of the transition piece 11, at the moment, the two connecting lugs 12 are fixed by screws to complete the assembly of the seat frame 41, and finally, the seat cushion is mounted on the seat frame 41; compared with the whole screw locking, the scheme is simpler and more convenient and is easy to operate.

The transition piece 11 can be connected with the handrail 10 and can be detachably connected with the seat 4, so that in order to facilitate the installation of the seat 4, namely, the installation of consumers, a gap which is convenient to install needs to be reserved between the transition piece 11 and the mechanism piece 2 and between the transition piece 11 and the handrail 10; the pipe diameter of the transition piece 11 is smaller than the outward extending width of the bearing platform 711, and the transition piece 11 is connected to the outer position of the bearing platform 711, so that a gap is formed between the transition piece 11 and the mechanism piece 2; the transition piece 11 includes a main body cross bar 112, a long vertical bar 113 located at the front side and a short vertical bar 114 located at the rear side, wherein the long vertical bar 113 and the short vertical bar 114 are located at the outer side of the main body cross bar 112, that is, between the main body cross bar 112 and the armrest 10, the long vertical bar 113 and the armrest 10 are fixedly connected through two screws, the short vertical bar 114 and the armrest 10 are fixedly connected through a single screw, and the seat frame 41 is mounted on the main body cross bar 112, so that a gap is formed between the armrest 10 and the seat frame 41 due to the long vertical bar 113 and the short vertical bar 114, thereby facilitating the mounting of the seat frame 41 or the seat 4.

Description will be made of the mounting connection of the footstool 5: as shown in fig. 2, the foot rest connecting rod assembly 8 comprises a foot rest connecting piece 81 positioned at the front end part, and the foot stool 5 is arranged on the foot rest connecting piece 81 and detachably connected through the plug-in assembly 13; specifically, as shown in fig. 10-13, the plug assembly 13 includes a cylindrical plug 131 and a socket 133 with a jack 132, the plug 131 is fixed on one of the footrest connecting member 81 or the footrest 5, the socket 133 is fixed on the other, in this embodiment, a set of plug assemblies 13 is disposed between each mechanism piece 2 and the footrest 51, each set of plug assemblies 13 includes two plugs 131 and two sockets 133, the two plugs 131 are fixed on a connecting plate 134 at an upper and lower interval, the connecting plate 134 is fixedly connected with the footrest 51 through screws, and the sockets 133 are fixed on the footrest connecting member 81 at an upper and lower interval corresponding to the positions of the plugs 131; leg rest connector 81 is a generally L-shaped plate having a front side plate 811 facing footrest 51, two circular holes 812 being provided in front side plate 811 corresponding to pins 131, and socket 133 being provided at these two circular holes 812 and located on the rear surface of front side plate 811.

The plug 131 is inserted into the jack 132 and the plug 131 is locked in the jack 132 by an elastic locking member 14 which is preloaded in the socket 133 and is detachable, the elastic locking member 14 is a ring-shaped elastic rod which is approximately elliptical, as shown in fig. 13, one end in the length direction is a limit end 141, the other end is an entrance end 142, and two locking rods 143 which are arranged at intervals are arranged between the limit end 141 and the entrance end 142; the limiting end 141 is a semicircular rod piece, two ends of the limiting end are fixedly connected with the two locking rods 143 respectively, the entering end 142 comprises two V-shaped buckling rods 1421 which are oppositely arranged, an opening 144 is formed between the buckling rods 1421, and the distance between the openings 144 is smaller than the distance between the two locking rods 143; the latch 131 has a head 1311 far from the footrest 51, a tail 1312 near the footrest 51, and a main body 1313 between the head 1311 and the tail 1312, the tail 1312 is provided with a ring groove 1314, and a clamping portion 1315 with a smaller diameter than the main body 1313 is formed, the space between the openings 144 is smaller than the diameter of the clamping portion 1315, and the space between the two locking rods 143 is smaller than the diameter of the main body 1313 but not smaller than the diameter of the clamping portion 1315; the head 1311 is rounded to facilitate access between the two locking bars 143; the socket 133 is further provided with a side slot 1331 penetrating the socket 133 in the left-right direction and communicating with the jack 132, and the elastic locking piece 14 is inserted into the side slot 1331; two stoppers 1332 are arranged in the side slot 1331, the stoppers 1332 are positioned on the left side and the right side of the jack 132, and the stoppers 1332 are matched with the limit ends 141 to prevent the elastic locking piece 14 from falling out after being inserted into the side slot 1331; further, the latch lever 1421 includes an outwardly bent engaging portion 14211, the engaging portion 14211 facilitates the insertion of the entrance end 142 into the side slot 1331, when the stopper 1332 is encountered, the engaging portion 14211 engages with the elastic locking element 14 to deform and expand, and after leaving the side slot 1331, the engaging portion 14211 expands to prevent the elastic locking element 14 from easily separating from the side slot 1331, but the elastic locking element 14 can also be pulled out from the side slot 1331; after the elastic locking piece 14 is inserted into the side slot 1331, the two locking rods 143 are partially exposed in the insertion hole 132, the footrest 51 is taken to align the latch 131 with the insertion hole 132, the latch 131 is inserted into the insertion hole 132 from front to back, the head 1311 of the latch enters between the two locking rods 143, the elastic locking piece 14 is gradually deformed and the distance between the two locking rods 143 is widened, the latch 131 continues to move forward, the locking rods 143 passively pass through the main body 1313 and come into the clamping parts 1315, and the deformation is restored and clamped into the annular grooves 1314, so that the clamping parts 1315 are positioned between the two locking rods 143 and the locking rods 143 are positioned in the annular grooves 1314, the clamping parts 1315 are clamped by the locking rods 143, the latch 131 is locked in the insertion hole 132, and the mechanism pieces 2 on both sides are connected with the footrest 51 in this way, so that rapid installation of the footrest 51 is realized.

The back connecting rod assembly 9 comprises a back connecting sheet 91 protruding upwards from the seat 4 and connected with the backrest in an inserting way, and the back connecting sheet 91 is connected with the backrest in an inserting way through a screw; during packaging and transportation, the screw can be unscrewed to detach the backrest.

Description will be given of the mechanical stretching device 1: as shown in fig. 7, the base plate 71 is provided with a control component 15, the mechanism piece 2 further comprises a driving component 16, a user can drive the driving component 16 to move through the control component 15, so as to drive the whole mechanism piece 2 to move, and as the two mechanism pieces 2 are connected by the linkage component 3, the linkage component 3 can drive the other mechanism piece 2 to move, so that the whole mechanical stretching device 1 moves; specifically, as shown in fig. 14 and 15, the control unit 15 includes a lever 151, a push rod 152, and a fixing rod 153 fixedly connected to the base plate 71, a pull ring 1511 is provided at an upper end of the lever 151 for facilitating operation, a lower end of the lever 151 is rotatably connected to a front end of the push rod 152, and the push rod 152 is rotatably provided on the fixing rod 153; the driving assembly 16 comprises a rotating rod 161 and a driving rod 162, wherein the front end part of the rotating rod 161 is rotatably arranged relative to the base plate 71, the rear end part of the rotating rod 161 is rotatably connected with the rear end part of the driving rod 162, the front end part of the driving rod 162 is rotatably connected with the foot rest connecting rod assembly 8, and the foot rest connecting rod assembly 8 and the back connecting rod assembly 9 are in transmission connection through a transmission connecting rod assembly; the rear end of the push rod 152 is provided with a boss 1521 and abuts against the rear ends of the rotating rod 161 and the driving rod 162 for pushing the rotating rod 161 and the driving rod 162 to move; and the distance between the boss 1521 and the connection point of the push rod 152 and the fixing rod 153 is smaller than the distance between the front end of the push rod 152 and the connection point of the push rod 152 and the fixing rod 153, so that the operation of a user becomes labor-saving; a spring 17 is further arranged between the driving rod 162 and the base plate 71, one end of the spring 17 is arranged in a hole formed in the driving rod 162, the other end of the spring 17 is arranged on a lug 712 fixedly arranged on the base plate 71, and the spring 17 is always in an extension state and can generate assistance for the unfolding motion of the mechanical stretching device 1; when the sofa is in a normal sitting state, the driving assembly 16 is in a folded and folded state, the operating rod 151 is pulled upwards, the front end of the push rod 152 moves upwards along with the operating rod, the rear ends of the push rod 161 and the driving rod 162 are pushed downwards to rotate forwards, the driving assembly 16 is switched from the folded and folded state to an unfolding state under the assistance of the spring 17, and the leg rest connecting rod assembly 8 and the back connecting rod assembly 9 move along with the folding and folded state to enable the sofa to be switched from the normal sitting state to the lying state.

Further, as shown in fig. 2 to 4, the linkage assembly 3 includes a driving pipe 31 and two ring pipes 32, the two ring pipes 32 are arranged in the left-right direction and are arranged between the two mechanism pieces 2 in tandem, the left-right ends of the ring pipes 32 are connected with the two mechanism pieces 2, and the driving pipe 31 is arranged between the two ring pipes 32 and is parallel to the two ring pipes 32; specifically, as shown in fig. 16 to 21, the mechanism piece 2 further includes two mounting pipes 19, the driving pipe 31 is connected to the two mounting pipes 19, the three pipe members are all arranged in the left-right direction, the rotation lever 161 is rotated relative to the base plate 71 through the three pipe members, and the three pipe members are equivalent to rotation pins of the rotation lever 161 and the base plate 71; the mounting tube 19 is provided with a first sleeve 20 with external threads, two ends of the driving tube 31 are respectively provided with a second sleeve 21 with internal threads, the first sleeve 20 is provided with a first mounting hole 201 matched with the section of the mounting tube 19, the second sleeve 21 is provided with a sliding groove 211 and a second mounting hole 212 matched with the section of the driving tube 31, the second mounting hole 212 is communicated with the sliding groove 211 and enables the second sleeve 21 to penetrate through the sliding groove 211, the internal threads of the second sleeve 21 are arranged at the end part of the sliding groove 211, a smooth surface is still formed between the internal threads and the second mounting hole 212, and the first sleeve 20 and the second sleeve 21 can be locked through threaded connection; the mounting tube 19 is inserted in the first mounting hole 201, the driving tube 31 is inserted in the second mounting hole 212, a baffle 311 for preventing the driving tube 31 from being separated from the second sleeve 21 is arranged at the end part of the driving tube 31, the diameter of the baffle 311 is larger than the size of the second mounting hole 212 and not larger than the diameter of the sliding groove 211, and the second sleeve 21 is slidably arranged at the end part of the driving tube 31; when the driving tube 31 is installed, the second sleeves 21 at the two ends of the driving tube 31 are slid towards the middle part of the driving tube 31, so that the lengths of the driving tube 31 and the second sleeves 21 are enough to enter between the two installation tubes 19, and then the second sleeves 21 at the two ends are sequentially slid to be engaged with the first sleeve 20, and at the moment, the threaded connection is not performed yet; finally, the driving tube 31 is rotated to enable the first sleeve 20 to be in threaded connection with the second sleeve 21 and locked, the driving tube 31 is connected with the two mounting tubes 19, the shape of the first mounting hole 201 is matched with the section of the mounting tube 19, so that the first sleeve 20 and the mounting tube 19 can synchronously rotate, the shape of the second mounting hole 212 is matched with the section of the driving tube 31, so that the second sleeve 21 and the driving tube 31 can synchronously rotate, and after the first sleeve 20 is connected with the second sleeve 21, the driving tube 31 and the two mounting tubes 19 can synchronously rotate; and the internal threads of the two second sleeves 21 are opposite in rotation direction, and the synchronous connection of the first sleeves 20 and the second sleeves 21 at two sides can be realized by unidirectional rotation.

The base plate 71 is provided with an avoidance hole 713, the avoidance hole 713 is configured to avoid the mounting pipe 19, both ends of the mounting pipe 19 protrude from the mechanism piece 2, a section of the mounting pipe 19 protruding inwards from the base plate 71 is connected with the driving pipe 31, and a section of the mounting pipe 19 protruding outwards from the base plate 71 is connected with the rotating rod 161; the front end of the rotating rod 161 is provided with a connecting hole 1611 for inserting the mounting tube 19, the shape of the connecting hole 1611 is matched with the section of the mounting tube 19, the front end of the rotating rod 161 is also provided with a mounting plate 1612 extending along the length direction of the mounting tube 19, and the mounting tube 19 is fixedly connected with the mounting plate 1612 and rotates relative to the base plate 71 as a rotating shaft of the rotating rod 161; when a user controls the driving assembly 16 of the one side mechanism piece 2 to move through the control assembly 15, the rotating rod 161 rotates, and simultaneously, the connecting hole 1611 is matched with the section of the mounting tube 19, so that the mounting tube 19 is driven to rotate together, and the mounting tube 19 and the driving tube 31 are locked together through the first sleeve 20 and the second sleeve 21, so that the driving tube 31 rotates along with the driving tube and drives the mounting tube 19 of the other side mechanism piece 2 to rotate, so that the other side mechanism piece 2 synchronously moves.

22-24, the transmission link assembly includes a first transmission rod 22 and a second transmission rod 23, wherein the first transmission rod 22 is close to the rear end of the mechanism piece 2, the second transmission rod 23 is close to the front end of the mechanism piece 2, the first transmission rod 22 and the second transmission rod 23 are all arranged approximately vertically, the lower ends of the first transmission rod 22 and the second transmission rod 23 are all connected with the base 72 in a rotating way, two first rotating rods 161 of two mechanism pieces 2 on the left side and the right side are connected by one annular tube 32, and two second rotating rods 161 are connected by the other annular tube 32; specifically, since the transmission points of the first transmission rod 22 and the second transmission rod 23 are different, the shapes of the transmission points are different, but the detachable connection structure of the transmission rod is the same as that of the annular tube 32, taking the first transmission rod 22 as an example, the first transmission rod 22 is approximately in a strip plate shape, an adjusting groove 24 is formed in the upper position of the middle part of the first transmission rod 22, a clamping groove 25 is formed in the lower position of the middle part of the first transmission rod, the adjusting groove 24 has radian, a notch of the adjusting groove is positioned at the rear end part of the first transmission rod 22, and the path of the adjusting groove 24 extends forwards and upwards from the notch; the clamping groove 25 is a U-shaped groove, a protruding part 251 is arranged near the notch of the clamping groove, and the width of the groove at the protruding part 251 is reduced; the left end and the right end of the annular tube 32 are respectively provided with two connecting columns 26 which are arranged at intervals up and down, the connecting columns 26 are inwards reduced along the circumferential direction to form a locking part 261, a limiting part 262 is formed at one side of the locking part 261 away from the annular tube 32, the bottom of the connecting column 26 is arranged at one side of the locking part 261 close to the annular tube 32, the diameter of the locking part 261 is smaller than the diameters of the limiting part 262 and the bottom, and the diameter of the locking part 261 is matched with the groove widths of the adjusting groove 24 and the clamping groove 25; when the annular tube 32 is installed, the connecting column 26 positioned above is erected to be aligned with the notch of the adjusting groove 24, the locking part 261 of the connecting column 26 enters the adjusting groove 24, the annular tube 32 is moved along the path of the adjusting groove 24 until the locking part 261 enters the bottom of the adjusting groove 24, at the moment, the annular tube 32 is rotated to enable the locking part 261 of the connecting column 26 positioned below to enter the clamping groove 25, and the connecting column 26 is locked after the locking part 261 passes over the protruding part 251 of the clamping groove 25, so that the annular tube 32 is connected with the first transmission rod 22; the distance between the notch of the adjusting slot 24 and the notch of the clamping slot 25 is smaller than the distance between the two connecting posts 26, and the protruding portion 251 in the clamping slot 25 prevents the first transmission rod 22 from being easily separated after being connected with the annular tube 32, and the limiting portion 262 of the connecting post 26 and the bottom of the connecting post 26 prevent the connecting post 26 from falling out of the slot.

The annular tube 32 is of a square frame structure, and compared with a simple straight tube, the annular tube 32 is phase-changed to increase the width of the annular tube, so that the overall strength and structural stability of the annular tube are improved, and larger torque and stress capability can be brought during working.

Therefore, when packaging, the linkage assembly 3, the seat 4, the footstool 5, the backrest and the two mechanism pieces 2 (fixedly connected with the armrests 10) are all separate to-be-packaged pieces, so that the space utilization rate is increased, and the cost of packaging and transportation is reduced.

Claims (10)

1. The utility model provides a reassembling type sofa which characterized in that: the mechanical stretching device comprises two mechanism pieces which are bilaterally symmetrical and are arranged at intervals, and the two mechanism pieces are detachably connected through a linkage assembly; the sofa plate comprises a seat, a footstool and a backrest, and the seat, the footstool and the backrest are all detachably connected to the mechanical stretching device; when the sofa is packed, the backrest, the footstool and the seat are detached from the mechanical stretching device, the two mechanism pieces are separated from the linkage assembly, and the backrest, the footstool, the seat, the linkage assembly and the two mechanism pieces all form an independent piece to be packed.

2. The sofa of claim 1 wherein: the mechanism piece comprises a fixed plate, a foot rest connecting rod assembly, a seat connecting rod assembly and a back connecting rod assembly, wherein the foot rest connecting rod assembly, the seat connecting rod assembly and the back connecting rod assembly are all connected with the fixed plate and selectively drive the foot rest connecting rod assembly, the seat connecting rod assembly and the back connecting rod assembly of the mechanism piece at two sides to move relative to the fixed plate by the linkage assembly; the seat is detachably connected to the seat link assembly, the footrest is detachably connected to the leg rest link assembly, and the backrest is detachably connected to the backrest link assembly.

3. The sofa of claim 1 wherein: the mechanism piece comprises a base, a foot rest connecting rod assembly and a back connecting rod assembly, wherein the foot rest connecting rod assembly and the back connecting rod assembly are connected with the base and selectively drive the foot rest connecting rod assembly and the back connecting rod assembly of the mechanism piece at two sides to move relative to the base by the linkage assembly; the seat is detachably connected to the base, the footstool is detachably connected to the leg rest connecting rod assembly, and the backrest is detachably connected to the backrest connecting rod assembly.

4. The sofa of claim 1 wherein: the sofa plate further comprises an armrest, the mechanism piece comprises a base plate which is static relative to the ground, and the armrest is arranged on the base plate and forms the same piece to be packaged with the mechanism piece.

5. The sofa of claim 4 wherein: the armrests are connected with the base plate through a transition piece, the base plate is correspondingly provided with a supporting platform extending outwards, the transition piece is fixedly arranged on the supporting platform, and the armrests are fixedly arranged on the side surfaces of the transition piece.

6. The sofa of claim 5 wherein: the seat comprises a square seat frame and a cushion arranged on the seat frame, and the seat frame surrounds the mechanical stretching device and is detachably connected with the transition piece.

7. The sofa of claim 6 wherein: the seat frame comprises two connecting pipes positioned at the left part and the right part of the seat frame, the connecting pipes are lapped above the transition piece, the connecting pipes are provided with connecting lugs which extend downwards, and the connecting lugs are detachably connected with the transition piece through screws; the connecting pipe is also provided with a mounting pin which is positioned below the connecting pipe and protrudes downwards from the connecting pipe, and the mounting pin also comprises a round table positioned at the lower end of the mounting pin; the end of the transition piece is correspondingly provided with a mounting groove, and the mounting pin enters the mounting groove and abuts against the transition piece through the round table.

8. The sofa of claim 1 wherein: the mechanism piece comprises a back connecting piece positioned at the rear part, the back connecting piece protrudes upwards from the seat part and is inserted into the backrest, and the back connecting piece is detachably connected with the backrest.

9. The sofa of claim 1 wherein: the foot rest connecting rod assembly comprises a foot rest connecting piece positioned at the front end part, and the foot stool is arranged on the foot rest connecting piece and detachably connected through the plug-in assembly.

10. The sofa of claim 9 wherein: the plug assembly comprises a plug pin and a socket with a jack, wherein the plug pin is fixed on one of the leg rest connecting piece or the footstool, the socket is fixed on the other, and the plug pin is inserted into the jack of the socket and is locked in the jack through an elastic locking piece.

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