阅读说明：本技术 一种多功能沙发 (Multifunctional sofa ) 是由 郑坚荣 于 2019-11-13 设计创作，主要内容包括：本发明涉及一种多功能沙发,属于沙发的技术领域,其技术方案要点是一种多功能沙发,包括坐板以及固定设置在坐板一侧的靠背,所述靠背的中间位置处滑动设置有升降板,升降板的滑动方向竖直,坐板在靠近升降板的上表面设置有桌台,升降板朝向桌台的一侧固定设置有竖直的第一齿条,第一齿条的齿顶朝向桌台,坐板内转动设置有与第一齿条想啮合的齿轮,且齿轮位于坐板的顶端位置处,桌台上固定设置有竖直的第二齿条,第二齿条位于齿轮背离第一齿条的一侧,且第二齿条与齿轮啮合,达到可以实现便于多人办公或娱乐的效果。(The invention relates to a multifunctional sofa, which belongs to the technical field of sofas and adopts the technical scheme that the multifunctional sofa comprises a seat plate and a backrest fixedly arranged on one side of the seat plate, wherein a lifting plate is arranged at the middle position of the backrest in a sliding manner, the sliding direction of the lifting plate is vertical, a table is arranged on the upper surface of the seat plate close to the lifting plate, a vertical first rack is fixedly arranged on one side of the lifting plate facing the table, the tooth top of the first rack faces the table, a gear which is engaged with the first rack is rotatably arranged in the seat plate, the gear is positioned at the top end of the seat plate, a vertical second rack is fixedly arranged on the table, the second rack is positioned on one side of the gear, which is deviated from the first rack, and is engaged with the gear, so that the effect of facilitating office work or entertainment of multiple persons is achieved.)

1. The utility model provides a multifunctional sofa, includes seat (1) and fixed back (2) of setting in seat (1) one side, its characterized in that: the middle position department of back (2) slides and is provided with lifter plate (3), the slip direction of lifter plate (3) is vertical, seat (1) is provided with table (4) near the upper surface of lifter plate (3), lifter plate (3) are fixed towards one side of table (4) and are provided with vertical first rack (311), the tooth top of first rack (311) is towards table (4), seat (1) internal rotation is provided with and wants gear (5) of meshing with first rack (311), and gear (5) are located the top position department of seat (1), fixed vertical second rack (41) that is provided with on table (4), second rack (41) are located one side that gear (5) deviate from first rack (311), and second rack (41) and gear (5) mesh.

2. The multi-purpose sofa of claim 1, wherein: the utility model discloses a seat chair, including back (2), lifter plate (3), telescopic hole (32), locking strip (322), telescopic hole (32), locking spring (321) are provided with in telescopic hole (32), the one end of locking spring (321) is fixed with the hole bottom in telescopic hole (32), the other end is fixed with locking strip (322), when locking spring (321) are in the primary length state, telescopic hole (32) are stretched out to the tip of locking strip (322), and when locking strip (322) insert in locking hole (22), the bottom surface of table (4) is higher than the upper surface of seat (1).

3. The multi-purpose sofa of claim 2, wherein: the top end of the lifting plate (3) is provided with an adjusting hole (323) communicated with the telescopic hole (32), an adjusting rod (324) is arranged in the adjusting hole (323) in a sliding mode, and the adjusting rod (324) penetrates through the adjusting hole (323) and then is fixedly connected with the locking strip (322).

4. The multi-purpose sofa of claim 2, wherein: return holes (21) are formed in the lifting plate (3) right above the locking holes (22), and when the locking strips (322) are inserted into the return holes (21), the top end of the lifting plate (3) is flush with the top end of the backrest (2).

5. The multi-purpose sofa of claim 2, wherein: the two first racks (311) are fixedly arranged at the positions, close to the locking hole (22), of the two sides of the lifting plate (3), the two first racks (311) are correspondingly arranged, the two second racks (41) are correspondingly arranged, and the two second racks (41) are fixedly arranged at the positions, corresponding to the two first racks (311), of the two sides of the table (4).

6. The multi-purpose sofa of claim 5, wherein: vertical sliding holes (12) are formed in the seat plate (1), the second racks (41) are vertically inserted into the sliding holes (12), the sliding holes (12) penetrate through the seat plate (1) towards one side of the lifting plate (3), the rotating shaft of the gear (5) is located in the sliding holes (12), and the tooth tops of the gear (5) penetrate through the sliding holes (12) and then are meshed with the first racks (311).

7. The multi-purpose sofa of claim 6, wherein: vertical accommodating grooves (31) are formed in the lifting plate (3), and the first racks (311) are located in the accommodating grooves (31).

8. The multi-purpose sofa of claim 1, wherein: the seat board (1) has all been seted up on the vertical side that is close to and keeps away from back (2) and has been accomodate chamber (6), accomodate and be provided with folding seat subassembly (7) in chamber (6), folding seat subassembly (7) include sliding plate (71), bracing piece (72) and plane board (73), wherein, sliding plate (71) and the inner wall sliding connection who accomodates chamber (6), bracing piece (72) are provided with two at least, bracing piece (72) link to each other with the upper surface of sliding rod is articulated, the top and the plane board (73) of bracing piece (72) are articulated to link to each other.

Technical Field

The invention relates to the technical field of sofas, in particular to a multifunctional sofa.

Background

In people's daily life, the sofa has become a very common furniture, and compared with a wooden seat, the sofa can provide people with more comfort. With the continuous improvement of living standard of people, the requirements of people on furniture are higher and higher, and the common sofa with single function is gradually abandoned by people.

The existing sofa comprises a seat plate and a backrest fixedly arranged on one side of the seat plate, and can be used for sitting on the seat plate and leaning against the backrest when in rest.

The existing sofa has single function, and can be used for only a plurality of people to have a rest, but the existing sofa is inconvenient for a plurality of people to want to work or entertain in the sofa because the existing sofa does not have a table board.

Disclosure of Invention

The invention aims to provide a multifunctional sofa which is convenient for a plurality of people to work or entertain.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a multifunctional sofa, includes seat and the fixed back that sets up in seat one side, the intermediate position department of back slides and is provided with the lifter plate, the slip direction of lifter plate is vertical, the seat is provided with the table platform at the upper surface that is close to the lifter plate, the lifter plate is towards the fixed first vertical rack that is provided with in one side of table platform, the tooth top of first rack is towards the table platform, the seat internal rotation is provided with and thinks the meshed gear with first rack, and the gear is located the top position department of seat, the fixed vertical second rack that is provided with on the table platform, the second rack is located the one side that the gear deviates from first rack, and second rack and gear engagement.

Through the technical scheme, under a normal state, the top end of the lifting plate is parallel to the top end of the backrest, at the moment, the upper surface of the table platform is parallel to the upper surface of the seat plate, at the moment, the sofa can be used as a standard three-person sofa, when a plurality of persons need to work or entertain at the same time, the lifting plate can be pressed downwards, the lifting plate drives the first rack to move downwards, the first rack drives the gear to rotate, the gear drives the second rack to move upwards, the second rack drives the table platform to ascend together, the lifting plate is fixed after the top end of the lifting plate is lower than the upper surface of the table platform, at the moment, the table platform can be used as a table top, two persons can sit on the seat plates on the two sides of the table platform, and two persons can be moved on two sides perpendicular to the seat plates, so that the office of the plurality of persons can be realized. In conclusion, the multifunctional sofa designed by the invention can achieve double functions of being used as a common sofa and working by a plurality of people at the same time, greatly reduces the space occupancy rate and improves the space utilization rate.

The invention is further configured to: the utility model discloses a seat, including the back, the back is in the bottom position department of going to lifter plate one side, the lifter plate is towards the side in locking hole and is seted up the locking hole, the lifter plate is seted up horizontally flexible hole towards the side in locking hole, it is provided with the locking strip to slide in the flexible hole, be provided with locking spring in the flexible hole, locking spring's one end is fixed with the hole bottom in flexible hole, the other end is fixed with the locking strip, when locking spring is in the primary state, the tip of locking strip stretches out flexible hole, and when the locking strip inserted the locking downthehole, the bottom surface of table was higher.

Through the technical scheme, when the lifter plate is pressed downwards, the locking strip is pressed into the telescopic hole, the locking strip compresses the locking spring, the lifter plate drives the gear to rotate through the first rack when descending, the gear and the second rack are meshed to drive the table platform to ascend, when the lifter plate descends to the locking strip to align to the locking hole, the locking spring recovers the original length, so that the locking strip is pressed into the locking hole, the lifter plate is further fixed, the table platform is prevented from sliding downwards when the table platform is used, and the use stability of the table platform is improved.

The invention is further configured to: the top end of the lifting plate is provided with an adjusting hole communicated with the telescopic hole, an adjusting rod is arranged in the adjusting hole in a sliding mode, and the adjusting rod penetrates through the adjusting hole and then is fixedly connected with the locking strip.

Through the technical scheme, when adjusting the lifter plate, hold between the fingers the regulation pole with the hand, then adjust the pole along adjusting the hole slip control, it compresses locking spring together to adjust the pole drive locking strip, after locking hole is aimed at to the locking strip, loosen the regulation pole, the locking strip inserts locking downthehole under locking spring's elasticity counter-force effect this moment, make the lifter plate keep fixed, the setting of adjusting the pole is convenient for spur locking strip, it is more convenient to make the fixed of lifter plate and remove fixed operation.

The invention is further configured to: the return hole has been seted up directly over the locking hole to the lifter plate, and when the locking strip inserted in the return hole, the top of lifter plate and the top parallel and level of back.

Through the technical scheme, when the table is not required to be used as an office table, the adjusting rod can be held, then the adjusting rod is slid along the adjusting hole, the adjusting rod drives the locking strip to compress the locking spring, the locking strip is separated from the locking hole, then the lifting plate is slid upwards, the lifting plate drives the gear to rotate through the first rack, the gear is meshed with the second rack so as to drive the table to descend, until the locking strip is slid to be aligned with the return hole, the upper surface of the table is flush with the upper surface of the seat plate, then the adjusting rod is loosened, the locking strip is inserted into the return hole under the elastic restoring force of the locking spring, the lifting plate is kept fixed and cannot descend, the table can be used as a part of the seat plate, and the lifting plate can be used as a backrest, namely, the three-person sofa can be used as a standard sofa.

The invention is further configured to: the first racks are arranged in two, the two first racks are fixedly arranged at the positions, close to the locking holes, of the two sides of the lifting plate, the two second racks are correspondingly arranged, and the two second racks are fixedly arranged at the positions, corresponding to the first racks, of the two sides of the table.

Through above-mentioned technical scheme, first rack is provided with two and is located the both sides position department that is close to the locking hole, consequently makes the rising or the decline of lifter plate more stable, and the table platform that corresponds can obtain effectual support after rising, improves the stability of table platform when using as the desk.

The invention is further configured to: the seat plate is provided with a vertical sliding hole, the second rack is vertically inserted into the sliding hole, one side of the sliding hole, which faces the lifting plate, penetrates through the seat plate, the rotating shaft of the gear is positioned in the sliding hole, and the top of the gear penetrates through the sliding hole and then is meshed with the first rack.

Through above-mentioned technical scheme, the second rack slides and inserts and locates in the sliding hole, makes the lift of second rack more smooth and easy, stability is higher on the one hand, and then improves the lift stability of table platform to the gear is located the sliding hole, makes the structure between lifter plate and the table platform compacter, and when the lifter plate used as the back, the space between lifter plate and the seat was less, uses the travelling comfort further to improve.

The invention is further configured to: vertical holding tank has been seted up on the lifter plate, first rack is located the holding tank.

Through above-mentioned technical scheme, first rack is located the holding tank, consequently rises to extreme position and when being as a part of back when the lifter plate, the back of the people of sitting on the seat can not with first rack direct contact to travelling comfort when having improved the seat and using as the back.

The invention is further configured to: the seat board has all been seted up on the vertical side that is close to and keeps away from the back and accomodates the chamber, accomodates the intracavity and is provided with folding seat subassembly, and folding seat subassembly includes sliding plate, bracing piece and plane board, and wherein, the sliding plate with accomodate the inner wall sliding connection in chamber, the bracing piece is provided with two at least, the bracing piece links to each other with the upper surface of sliding plate is articulated, the top and the plane board of bracing piece are articulated continuous.

Through the technical scheme, when the foldable seat assembly is used as a sofa, the foldable seat assembly is stored in the storage cavity, and the specific storage state is as follows: the surface plate rotates to the surface plate and pastes on the bracing piece surface round the articulated shaft with the bracing piece, and the bracing piece rotates to the upper surface that the bracing piece pasted on the sliding plate round the articulated shaft with the slide bar to bracing piece, slide in after folding and accomodate intracavity portion and accomodate, greatly reduced occupation space. And when the table rises, when needing to provide the seat, then can follow the sliding plate and accomodate intracavity roll-off to the pulling bracing piece, make the bracing piece perpendicular with the sliding plate, rotate the plane board again, make the plane board keep the level, the user just can sit on the plane board, needn't go to take a seat alone again, and is very convenient.

The invention is further configured to: the utility model discloses a folding support device for the wall of a sliding plate, including the supporting rod, the folding groove has been seted up on the sliding plate, the supporting rod is located the folding groove and links to each other with the one end of folding groove is articulated, the bracing piece is located the folding groove and the lower surface of plane board and the upper surface butt of sliding plate during accomodating, the groove has been seted up in the intermediate position department of sliding plate to accomodate the inslot and has been placed the supporting leg, the figure of supporting leg equals with the figure of bracing piece, first supporting groove has been seted up towards one side of folding groove to the bracing piece, the second support groove has been seted up in the folding groove, when the bracing piece keeps vertical, the.

Through the technical scheme, when folding seat subassembly is in the folding state of accomodating, the bracing piece is located the folding inslot portion, make whole folding seat subassembly compacter after folding, occupation space is little, and when pulling out the sliding plate and rotate the bracing piece to vertical state, the plane board rotates to the horizontality in order when being the seat, can take out the supporting leg of accomodating the inslot, then make the both ends of supporting leg insert first supporting groove and second respectively and support inslot portion, make the supporting leg keep stable vertical state, the stability when the plane board used as the seat has been improved.

The invention is further configured to: the lower surface of the plane plate is provided with a positioning groove, a vertical downward positioning spring is fixedly arranged in the positioning groove, a vertical positioning strip is fixedly arranged at the bottom of the positioning spring, a horizontal positioning hole is formed in the positioning strip, a positioning stud is inserted into the positioning hole, a threaded hole corresponding to the positioning hole is formed in the position, close to the top end, of the supporting rod, and when the positioning spring is in a natural state, the bottom end of the positioning strip is flush with the lower surface of the plane plate.

Through above-mentioned technical scheme, when the plane board used as the seat, the plane board kept the level, but relative rotation takes place easily between plane board and the bracing piece, stability is not good enough, can stimulate the location strip downwards this moment, the location strip drives positioning spring, make positioning spring receive tensile, make the locating hole aim at the screw hole, then pass the location double-screw bolt and twist the screw hole behind the locating hole, make to form reliable and stable relatively fixed between plane board and the bracing piece, stability when having improved the plane board and using as the seat.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the table platform which is matched with the lifting plate in a reverse lifting way is arranged, so that the sofa can be used as a standard three-person sofa and can also be used as a multi-person office place;

2. the side surfaces of the seat plate, which are close to the backrest and far away from the backrest, are provided with the containing cavities, and the containing cavities are internally provided with the folding seat components, so that the desk platform is convenient for providing seats when being used as an office desk;

3. the supporting legs inserted into the first supporting grooves and the second supporting grooves at two ends are arranged, so that the supporting rods are more stable when vertical, and the plane plate is more stable and reliable when used as a seat.

Drawings

FIG. 1 is a schematic view of the sofa of the present invention;

FIG. 2 is a schematic view of the present invention deployed as an office or entertainment venue;

FIG. 3 is a schematic view of the present invention for emphasizing the structure of a sliding groove;

FIG. 4 is a schematic view of the linkage structure intended to emphasize the back rest and table;

FIG. 5 is a partial cross-sectional view intended to emphasize the connection of the backrest and the lifter plate;

FIG. 6 is a schematic structural view of the folding seat assembly;

fig. 7 is a sectional view for emphasizing the connection relationship between the flat plate and the support rod.

Reference numerals: 1. a seat plate; 11. a sliding groove; 12. a slide hole; 2. a backrest; 21. a return hole; 22. a locking hole; 3. a lifting plate; 31. accommodating grooves; 311. a first rack; 32. a telescopic hole; 321. a locking spring; 322. a locking strip; 323. an adjustment hole; 324. adjusting a rod; 4. a table; 41. a second rack; 5. a gear; 6. a receiving cavity; 7. a folding seat assembly; 71. a sliding plate; 711. a folding slot; 7111. a second support groove; 712. a receiving groove; 7121. supporting legs; 713. an auxiliary leg; 714. a handle; 72. a support bar; 721. a first support groove; 722. a threaded hole; 73. a flat plate; 731. positioning a groove; 732. a positioning spring; 733. a positioning bar; 7331. positioning holes; 7332. positioning the stud; 8. a slider; 81. a chute.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A multifunctional sofa is disclosed, with reference to figures 1 and 2, and comprises a seat plate 1 and a backrest 2 fixedly arranged on one side of the seat plate 1, wherein the backrest 2 is perpendicular to the seat plate 1, a groove is arranged at the middle position of the seat plate 1, a table 4 flush with the upper surface of the seat plate 1 is arranged in the groove, a notch is arranged at the middle position of the backrest 2, a lifting plate 3 is arranged in the notch in a sliding manner, the sliding direction of the lifting plate 3 is vertical, the lifting plate 3 can drive the table 4 to move reversely, namely when the lifting plate 3 is lifted to be flush with the top end of the backrest 2, the upper surface of the table 4 is flush with the upper surface of the seat plate 1, when the lifting plate 3 is lowered, the table 4 is lifted to be higher than the top end of the lifting plate 3, two opposite vertical side surfaces of the seat plate 1 close to or far away from the backrest 2 are provided with storage cavities 6, the two storage cavities 6 are staggered up and down to ensure that the storage cavities 6 have enough depth, the folding seat assembly 7 is arranged in the containing cavity 6, and the folding seat assembly 7 can be pulled out from the containing cavity 6 to provide a seat after the table platform 4 is lifted upwards, so that the sofa can be used as a sofa for multiple persons, and can also be used as an office table according to actual needs, so that the sofa is convenient for multiple persons to work or entertain.

Referring to fig. 1 and 4, the lifting plate 3 has two receiving slots 31 on a vertical side facing a middle position of the seat plate 1, the receiving slots 31 are vertically disposed and have two receiving slots 31, the two receiving slots 31 are respectively disposed at positions of the lifting plate 3 close to the backrest 2 at two sides, a first rack 311 is fixedly disposed in the receiving slot 31, a tooth top of the first rack 311 faces one side of a center of the seat plate 1, a vertical sliding hole 12 is disposed at a position of an upper surface of the seat plate 1 facing the receiving slots 31, the sliding hole 12 penetrates the seat plate 1 toward a side away from the seat plate 1, a gear 5 is disposed in the sliding hole 12 close to the upper surface of the seat plate 1, the gear 5 is rotatably connected to the seat plate 1, the tooth top of the gear 5 penetrates the sliding hole 12 and is engaged with the first rack 311, the table 4 is fixedly disposed right above the sliding hole 12 and has a second rack 41 vertically inserted into the sliding hole 12, the second rack 41 is opposite to the first rack 311 and the second rack 41 is also engaged with the gear 5, when the top end of the lifting plate 3 is flush with the top end of the backrest 2, the bottom of the first rack 311 is meshed with the gear 5, the top end of the second rack 41 is meshed with the gear 5, and the upper surface of the table 4 is flush with the upper surface of the seat plate 1, so that the sofa can be used as a multi-person sofa; when the lifting plate 3 is pressed downwards, the lifting plate 3 drives the first rack 311 to move downwards, the first rack 311 drives the gear 5 to rotate, the gear 5 drives the second rack 41 to move, and the second rack 41 drives the table 4 to ascend, so that the table 4 can be used as a table.

Combine fig. 3 and fig. 4, sliding tray 11 has been seted up under lifter plate 3 to seat 1, lifter plate 3 during the downstream with sliding tray 11 sliding fit, make lifter plate 3 can have accommodation space after descending, lifter plate 3 is close to the fixed slider 8 that is provided with in both sides of back 2, the spout 81 that communicates each other is seted up to the both sides of back 2 and sliding tray 11 corresponding position department, the vertical setting of spout 81 and with the slider 8 sliding adaptation, therefore during the lifter plate 3 that slides downwards, slider 8 slides in spout 81, make reciprocating of lifter plate 3 more smooth and easy.

As shown in fig. 5, the backrest 2 has a return hole 21 and a locking hole 22 on a vertical side facing the lifting plate 3, the return hole 21 is located above the locking hole 22, preferably, the return hole 21 is located at a position close to the top end of the backrest 2, the locking hole 22 is located at a position close to the bottom end of the backrest 2, horizontal telescopic holes 32 are formed on vertical sides of the lifting plate 3 facing both sides of the backrest 2, locking springs 321 are disposed in the telescopic holes 32, one ends of the locking springs 321 are fixedly connected to the bottoms of the telescopic holes 32, locking bars 322 are fixedly connected to one ends of the locking springs 321 facing the backrest 2, the locking bars 322 are slidably engaged with the telescopic holes 32, an adjusting hole 323 communicating with the telescopic holes 32 is formed in the top end of the lifting plate 3, an adjusting rod 324 is slidably disposed in the adjusting hole 323, and the adjusting rod 324 is fixedly connected to the locking bars 322 after passing through the adjusting hole 323. When the top end of the backrest 2 is flush with the top end of the backrest 2, the return hole 21 is aligned with the telescopic hole 32, and the locking strip 322 is inserted into the return hole 21 under the elastic force action of the locking spring 321, so that the lifting plate 3 and the backrest 2 form stable relative fixation, and the multifunctional sofa can be used as a standard multi-person sofa; when the table is needed to be used for office work or entertainment of multiple people, the adjusting rod 324 can be held, the adjusting rod 324 is slid along the adjusting hole 323, the adjusting rod 324 drives the locking strip 322 to move along the telescopic hole 32 until the locking strip 322 is separated from the return hole 21, then the lifting plate 3 is slid downwards until the telescopic hole 32 is aligned with the locking hole 22, then the adjusting rod 324 is loosened, the locking strip 322 is inserted into the locking hole 22 under the action of the elastic restoring force of the locking spring 321, so that the lifting plate 3 and the backrest 2 are kept fixed, and in the descending process of the lifting plate 3, the table 4 can simultaneously ascend, and the table 4 can be used as the table after ascending.

With reference to fig. 3 and 6, the folding seat assembly 7 includes a sliding plate 71, a supporting rod 72 and a plane plate 73, wherein the sliding plate 71 is in sliding fit with the side wall of the accommodating cavity 6, and a folding groove 711 is formed in the upper surface of the sliding plate 71, in this embodiment, two folding grooves 711 are provided, and one end of the supporting rod 72 is hinged to a side position of the folding groove 711 far away from the inside of the accommodating cavity 6, so that the supporting rod 72 can be blocked by the side wall of the folding groove 711 far away from the side wall of the accommodating cavity 6 after rotating ninety degrees around the hinged position, thereby ensuring that the supporting rod 72 maintains vertical stability. The end of the support bar 72 away from the folding groove 711 is hinged to the flat plate 73, and the flat plate 73 can rotate to fit the support bar 72. When the present invention is used as a sofa, the flat plate 73 rotates around the hinge axis with the support rod 72 to be attached to the surface of the support rod 72, the support rod 72 rotates around the hinge axis with the sliding plate 71 to be received in the folding groove 711, and the sliding plate 71 is slidably disposed inside the receiving chamber 6, so that the folding seat assembly 7 is disposed inside the seat plate 1, thereby reducing the occupied space. When the present invention is needed to provide a desk for a plurality of people to work, the sliding plate 71 can be pulled out from the receiving cavity 6, the supporting rod 72 can be taken out from the folding groove 711, the supporting rod 72 can be rotated to be in a vertical state, the flat plate 73 can be rotated to be horizontal, a person can sit on the flat plate 73, and the flat plate 73 can serve as a simple stool. Or the flat plate 73 can be used as a simple tea table.

As shown in fig. 6, the upper surface of the sliding plate 71 is provided with a storage groove 712 at the middle position of the two folding grooves 711, the support legs 7121 are placed in the storage groove 712, the number of the support legs 7121 is the same as that of the support bars 72, in this embodiment, preferably, two support legs 7121 are provided, the support bars 72 are provided with a first support groove 721 on the vertical side surface facing the side of the sliding plate 71, the folding grooves 711 are provided with a second folding groove 711, when the support bars 72 rotate to the vertical state, the two ends of the support legs 7121 can be respectively abutted against the first support groove 721 and the second support groove 7111, so as to fix the support bars 72, so that the support bars 72 can stably maintain the vertical state, and the stability of the support bars 72 is improved.

As shown in fig. 6, two auxiliary legs 713 are fixedly disposed at one end of the sliding plate 71 away from the accommodating chamber 6, the auxiliary legs 713 are disposed at two sides of the sliding plate 71, and the lower surfaces of the auxiliary legs 713 abut against the ground, so that when a person sits on the plane plate 73, the auxiliary legs 713 can support the sliding plate 71, thereby improving the force uniformity of the sliding plate 71, and further improving the stability and safety of the person sitting on the plane plate 73. The sliding plate 71 is fixedly provided with a handle 714 at an end portion near one side of the auxiliary leg 713 for easy pulling.

Referring to fig. 6 and 7, when the planar plate 73 is in a horizontal state, the planar plate 73 has a plurality of positioning grooves 731 facing the bottom surface of the sliding plate 71, the positioning grooves 731 are provided, preferably, two opposite sides of each supporting rod 72 are provided with a positioning groove 731, a positioning spring 732 is fixedly provided in the positioning groove 731, an end portion of the positioning spring 732 is fixedly connected with a positioning bar 733, the positioning bar 733 is in sliding fit with the positioning groove 731, and when the positioning spring 732 is in a natural state, a bottom end of the positioning bar 733 is flush with a lower surface of the planar plate 73, a positioning hole 7331 penetrating through the positioning bar 733 is provided on a circumferential surface of the positioning bar 733 away from the positioning groove 731, a positioning stud 7332 is inserted into the positioning hole 7331, a threaded hole 722 is provided at a position of the supporting rod 72 near the top end of the planar plate 73, in order to maintain stability of the planar plate 73, the positioning bar 733 is, the positioning stud 7332 is screwed into the threaded hole 722 after passing through the positioning hole 7331, so that the supporting rod 72 and the plane plate 73 are stably fixed by the positioning stud 7332, and the plane plate 73 is prevented from being reversed when used as a seat, thereby improving stability.

The implementation principle of the embodiment is as follows: when the foldable seat assembly 7 is used as a common sofa, the foldable seat assembly 7 is folded and stored in the storage cavity 6, the top end of the lifting plate 3 is flush with the top end of the backrest 2, and the locking strip 322 is inserted into the return hole 21, at the moment, the lifting plate 3 can also be used as a part of the backrest 2, and the table 4 is used as a part of the seat plate 1. When the desk for multi-person working is required, firstly, the adjusting rod 324 is held, the adjusting rod 324 slides along the adjusting hole 323, the adjusting rod 324 drives the locking strip 322 to be separated from the return hole 21, then the lifting plate 3 is pressed downwards, the lifting plate 3 drives the first rack 311 to be meshed with the first gear 5, the first rack 311 slides downwards to drive the gear 5 to rotate, the gear 5 drives the second rack 41 to rise upwards, the second rack 41 drives the desk 4 to rise upwards, after the lifting plate 3 descends until the telescopic hole 32 is aligned with the locking hole 22, the adjusting rod 324 is released, the elastic restoring force of the locking spring 321 can insert the locking strip 322 into the locking hole 22, so that the lifting plate 3 and the desk 4 are ensured to be fixed, then, one or two groups of sliding plates 71 can be pulled out of the accommodating cavity 6 according to the actual number of people, after the sliding plates 71 are pulled out, the supporting rod 72 is rotated to the vertical state, then, one end of the supporting leg 7121 abuts against the first supporting groove 721, the other end abuts against the second supporting groove 7111, the supporting rod 72 is kept in a stable vertical state, the positioning bar 733 is partially pulled out of the positioning groove 731, the positioning stud 7332 penetrates through the positioning hole 7331 and then is screwed into the threaded hole 722, the plane plate 73 is kept in a stable horizontal state, and at the moment, a person can sit on the plane plate 73 to work or entertain for multiple persons on the table 4.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.