CN114680502A

CN114680502A - Multifunctional sofa

Info

Publication number: CN114680502A
Application number: CN202210200766.9A
Authority: CN
Inventors: 田甜; 周云; 林婷
Original assignee: Guangdong Vocational and Technical College
Current assignee: Guangdong Vocational and Technical College
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-07-01

Abstract

The invention discloses a multifunctional sofa, which comprises a first unit and two side units, wherein the two side units are respectively called a second unit and a third unit, and the second unit and the third unit are respectively arranged at two ends of the first unit; the first unit comprises a framework and a wrapping part, the framework comprises a first frame body and a second frame body, the first frame body is arranged on the left side of the second frame body, a hinge shaft at the hinged part of the first frame body and the second frame body is called a first hinge shaft, the first hinge shaft extends forwards and backwards, and a locking device is connected between the first frame body and the second frame body; the side unit is provided with a flexible section, and the flexible section is connected between the first unit and the side unit. The first frame body and the second frame body are hinged, so that the first frame body and the second frame body can be adjusted to be flat when the lying cushion is used, and the function of the lying cushion is realized; the hinge joint of the first frame body and the second frame body is lifted, then the current shape is fixed through the locking device, and therefore the first unit can serve as a backrest and the side unit serves as a seat cushion, and the function of the seat is achieved.

Description

Multifunctional sofa

Technical Field

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

Background

With the increasing demand of diversification and individuation of the sofa, the combined sofa is designed and manufactured. However, the existing sectional sofa can only simply change the placement position of each module, can only change the shape of the occupied land, cannot change the occupied land area, cannot realize the change of the use function, and still cannot meet the requirements of customers.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a multifunctional sofa.

The multifunctional sofa comprises a first unit and two side units, wherein the two side units are respectively called a second unit and a third unit, the second unit and the third unit are respectively arranged at two ends of the first unit, and the direction of the second unit relative to the third unit is taken as the left direction; the first unit comprises a framework and a wrapping part, the wrapping part wraps the outer side of the framework, the framework comprises a first frame body and a second frame body, the first frame body is arranged on the left side of the second frame body, a hinge shaft at the hinged part of the first frame body and the second frame body is called a first hinge shaft, the first hinge shaft extends forwards and backwards, and a locking device is connected between the first frame body and the second frame body; the side unit is provided with a flexible section, and the flexible section is connected between the first unit and the side unit.

The multifunctional sofa provided by the embodiment of the invention at least has the following technical effects: the first frame body and the second frame body are hinged, so that the first frame body and the second frame body can be adjusted to be flat when the multifunctional sofa is used, and the multifunctional sofa is integrally flat and can be used for lying and resting to realize the function of a lying cushion; when the multifunctional sofa is used, the hinged part of the first frame body and the second frame body can be lifted, the first unit is in an inverted V shape, then the current shape is fixed through the locking device, the first unit can serve as a backrest and a side unit to serve as a cushion, and two sides of the multifunctional sofa can be respectively used for people to sit down, so that the function of the seat is realized, meanwhile, the occupied area is reduced, and the movable space is vacated when passengers visit.

According to some embodiments of the invention, the locking device comprises a first gear, a second rotating shaft, a hand wheel, a friction plate and a knob, wherein the first gear is linked with the second gear, the first gear is coaxial with the first hinge shaft, and the first gear is fixedly connected with the first frame body; the second rotating shaft and the friction plate are both arranged on the second frame body, the second gear and the hand wheel are both sleeved on the outer side of the second rotating shaft, the second gear and the hand wheel coaxially rotate, the second rotating shaft penetrates through the wrapping part from inside to outside, the second gear is arranged on the inner side of the wrapping part, and the hand wheel is arranged on the outer side of the wrapping part; the one end of second pivot is equipped with the external screw thread, the hand wheel side is equipped with the knob, the knob is equipped with the internal thread hole, the knob with second pivot threaded connection, the friction disc the second gear the hand wheel with the knob is followed the axial of second pivot sets up in order. The size of contained angle between first support body and the second support body can be adjusted to the rotation hand wheel, adjusts the inclination of back promptly, can promote hand wheel and second gear, make second gear and friction disc butt backward when rotating the knob, and then locks the second gear, realizes the fixed of the relative position of first support body and second support body.

According to some embodiments of the invention, the first gear is in mesh with the second gear, the second gear having a smaller number of teeth than the first gear. The hand wheel can be rotated by small force to adjust, the structure is simple, and the adjustment is convenient.

According to some embodiments of the present invention, the second frame body is provided with a third rotating shaft, the third rotating shaft is rotatably provided with a third gear and a fourth gear, the third gear is fixedly connected with the fourth gear, the third gear is meshed with the first gear, the fourth gear is meshed with the second gear, and the number of teeth of the third gear is greater than that of the teeth of the fourth gear. The hand wheel can be rotated by small force to adjust, the structure is simple, and the adjustment is simple and convenient.

According to some embodiments of the present invention, the hand wheel is provided with a connecting portion, the connecting portion is tubular, the connecting portion is sleeved on the outer side of the second rotating shaft, the connecting portion is fixedly connected with the second gear, the side wall of the wrapping portion is provided with a connecting ring, the connecting ring is sleeved on the outer side of the connecting portion, and the connecting ring is rotatably connected with the connecting portion. Through setting up the go-between, connecting portion can not produce the friction with parcel portion when adjusting, prevents to damage parcel portion.

In some embodiments of the invention, the first unit and the side unit are connected by a detachable structure. Therefore, the two side units can be separated to be used as independent seat cushions, and the invention has wider application range.

According to some embodiments of the invention, the detachable structure comprises a dovetail groove and a rib, the dovetail groove and the rib each extending forward and backward, the rib mating with the dovetail groove, one of the dovetail groove and the rib being provided to the first unit and the other of the dovetail groove and the rib being provided to the side unit. The side unit is connected with the first unit compactly, the structure is simple, and the assembly and disassembly are simple and convenient.

According to some embodiments of the invention, the third unit is provided with a drawer. Through setting up the drawer, article can be deposited to the inside of third unit, are favorable to the house to accomodate.

According to some embodiments of the present invention, the second unit is provided with a second inner cavity, a front side of the second inner cavity is open, a sliding table component is arranged in the second inner cavity, the sliding table component includes a sliding seat and a table top plate, the table top plate is arranged on a front side of the sliding seat, and the sliding seat is connected with a cavity wall of the second inner cavity in a front-back sliding manner. When the desktop plate is used, the desktop plate can be pulled out to place articles such as beverages, books and the like, and the desktop plate can be pushed back into the second inner cavity when the desktop plate is not used, so that the space occupation is reduced.

According to some embodiments of the present invention, the sliding table assembly further includes two first connecting rods, the two first connecting rods are spaced apart from each other, the two first connecting rods extend forward and backward, two ends of the first connecting rod are respectively hinged to the sliding seat and the table top plate, one of the first connecting rods is called a positioning connecting rod, and a hinge shaft at a hinge point of the positioning connecting rod and the table top plate is called a second hinge shaft; the table comprises a table top plate and is characterized in that a second connecting rod is arranged at the bottom of the table top plate and extends forwards and backwards, a hinge shaft at the hinged position of the front end of the second connecting rod and the table top plate is called a third hinge shaft, the third hinge shaft is parallel to the second hinge shaft, the positioning connecting rod is provided with a plurality of clamping grooves, the clamping grooves are sequentially arranged along the axial direction of the positioning connecting rod, and a clamping head is arranged at the rear end of the second connecting rod and is matched with the clamping grooves. The two first connecting rods form a parallelogram mechanism, the vertical position of the desktop plate can be adjusted after the desktop plate is pulled out, the desktop plate cannot incline, and after the desktop plate is adjusted to a required position, the clamping heads are clamped and embedded into the corresponding clamping grooves, so that the current height can be fixed, the structure is simple, and the adjustment is simple and convenient.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a multifunctional sofa according to an embodiment of the present invention;

figure 2 is a right side cross-sectional view of the table top of figure 1;

FIG. 3 is a schematic view of the partially exploded structure of FIG. 1;

fig. 4 is a schematic perspective view of a framework of the multifunctional sofa according to the embodiment of the invention;

fig. 5 is a partially exploded view of fig. 4.

In the drawings:

100-a first cell; 101-convex strips; 200-a second cell; 201-dovetail groove; 210-a table top; 220-a first link; 230-a second link; 231-a chuck; 240-positioning link; 241-card slot; 250-a sliding seat; 260-a guide rail; 270-a slider; 300-a third unit; 310-a drawer; 410-a first frame; 401-a first hinge axis; 411-a first gear; 420-a second frame; 431-knob; 432-hand wheel; 433-a connecting part; 434-connecting ring; 435-a second gear; 436-friction plate; 437-second axis of rotation.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "a" or "an" mean one or more, the terms "a" or "an" mean two or more, the terms larger than, smaller than, exceeding, and the like are understood to include the number, and the terms "larger than, smaller than, within, and the like are understood to include the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

A multifunctional sofa according to an embodiment of the present invention will be described with reference to fig. 1 to 5.

The multifunctional sofa according to the embodiment of the invention comprises a first unit 100 and two side units, wherein the two side units are respectively called a second unit 200 and a third unit 300, the second unit 200 and the third unit 300 are respectively arranged at two ends of the first unit 100, and the direction of the second unit 200 relative to the third unit 300 is taken as the left direction; the first unit 100 comprises a framework and a wrapping part, the wrapping part is wrapped on the outer side of the framework, the framework comprises a first frame body 410 and a second frame body 420, the first frame body 410 is arranged on the left side of the second frame body 420, a hinge shaft at the hinged position of the first frame body 410 and the second frame body 420 is called a first hinge shaft 401, the first hinge shaft 401 extends forwards and backwards, and a locking device is connected between the first frame body 410 and the second frame body 420; the side unit is provided with a flexible section connected between the first unit 100 and the side unit.

For example, as shown in fig. 1, the second unit 200 and the third unit 300 are both in the shape of a horizontally placed seat cushion, the first unit 100 is in an inverted "V" shape, the second unit 200, the first unit 100 and the third unit 300 are sequentially arranged from left to right, the right end of the second unit 200 is provided with a flexible section, the flexible section of the second unit 200 is connected with the left end of the first unit 100, the left end of the third unit 300 is provided with a flexible section, and the flexible section of the third unit 300 is connected with the right end of the first unit 100; the wrapping part is an outer sleeve made of a flexible material, the first frame body 410 and the second frame body 420 are both arranged in the wrapping part, the first frame body 410 is obliquely arranged from left to right upwards, the second frame body 420 is obliquely arranged from left to right downwards, and the first hinge shaft 401 is arranged between the right end of the first frame body 410 and the left end of the second frame body 420; a locking device can be used to fix the relative positions of the first frame 410 and the second frame 420.

By arranging the first frame body 410 and the second frame body 420 to be hinged, the first frame body 410 and the second frame body 420 can be adjusted to be flat when in use, and at the moment, the multifunctional sofa is integrally flat and can be used for lying and resting to realize the function of a lying cushion; when the multifunctional sofa is used, the hinged part of the first frame body 410 and the second frame body 420 can be lifted, the first unit 100 is in an inverted V shape, then the current shape is fixed through the locking device, the first unit 100 can be used as a backrest and a side unit as a seat cushion, and two sides of the multifunctional sofa can be respectively used for people to sit down, so that the function of the seat is realized, meanwhile, the occupied area is reduced, and the activity space is conveniently vacated when a visitor visits.

In some embodiments of the present invention, the locking device includes a first gear 411, a second gear 435, a second rotating shaft 437, a hand wheel 432, a friction plate 436 and a knob 431, the first gear 411 is linked with the second gear 435, the first gear 411 is coaxial with the first hinge shaft 401, and the first gear 411 is fixedly connected with the first frame 410; the second rotating shaft 437 and the friction plate 436 are arranged on the second frame body 420, the second gear 435 and the hand wheel 432 are sleeved on the outer side of the second rotating shaft 437, the second gear 435 and the hand wheel 432 coaxially rotate, the second rotating shaft 437 penetrates through the wrapping portion from inside to outside, the second gear 435 is arranged on the inner side of the wrapping portion, and the hand wheel 432 is arranged on the outer side of the wrapping portion; one end of the second rotating shaft 437 is provided with an external thread, a knob 431 is arranged beside the hand wheel 432, the knob 431 is provided with an internal thread hole, the knob 431 is in threaded connection with the second rotating shaft 437, and the friction plate 436, the second gear 435, the hand wheel 432 and the knob 431 are sequentially arranged along the axial direction of the second rotating shaft 437. Referring to fig. 4 and 5, a first gear 411 is disposed at a front end of a first frame 410, the first gear 411 is sleeved outside a first hinge shaft 401, a rear end of a second rotating shaft 437 is fixedly connected to a second frame 420, a front end of the second rotating shaft 437 penetrates through a wrapping portion, a second gear 435 and a hand wheel 432 are rotatably connected with the second frame 420 through the second rotating shaft 437, the second gear 435 is engaged with the first gear 411 or is linked with the first gear 411 through an additional transmission member, so that the second gear 435 can drive the first gear 411, and a friction plate 436 is disposed between the second gear 435 and the second frame 420; the size of an included angle between the first frame body 410 and the second frame body 420 can be adjusted by rotating the hand wheel 432, namely, the inclination angle of the backrest is adjusted, when the knob 431 is rotated, the hand wheel 432 and the second gear 435 can be pushed backwards, the second gear 435 is abutted to the friction plate 436, the second gear 435 is locked, and the fixing of the relative positions of the first frame body 410 and the second frame body 420 is realized; the lying cushion can be changed into two seats by adjusting a hand wheel 432, and the operation is simple and convenient.

In some embodiments of the present invention, the first gear 411 is meshed with the second gear 435, and the number of teeth of the second gear 435 is smaller than that of the first gear 411. Therefore, the hand wheel 432 can be adjusted by rotating with small force, and the structure is simple and convenient to adjust.

In some embodiments of the present invention, the second frame body 420 is provided with a third rotating shaft, the third rotating shaft is rotatably provided with a third gear and a fourth gear, the third gear and the fourth gear are fixedly connected, the third gear is meshed with the first gear 411, the fourth gear is meshed with the second gear 435, and the number of teeth of the third gear is greater than that of the teeth of the fourth gear. The third gear and the fourth gear may be an integral component, and both the third gear and the fourth gear are rotatably connected with the second frame body 420 through a third rotating shaft; therefore, the hand wheel 432 can be adjusted by rotating with small force, and the structure is simple and convenient to adjust.

In some embodiments of the present invention, the hand wheel 432 is provided with a connecting portion 433, the connecting portion 433 is tubular, the connecting portion 433 is sleeved outside the second rotating shaft 437, the connecting portion 433 is fixedly connected to the second gear 435, a connecting ring 434 is disposed on a side wall of the wrapping portion, the connecting ring 434 is sleeved outside the connecting portion 433, and the connecting ring 434 is rotatably connected to the connecting portion 433. The connecting ring 434 can be installed by opening a hole on the side wall of the wrapping part; through setting up go-between 434, connecting portion 433 can not produce the friction with the parcel portion when adjusting, prevents to damage the parcel portion.

In some embodiments of the present invention, the first unit 100 and the side unit are connected by a detachable structure. Therefore, the two side units can be separated to be used as independent seat cushions, and the invention has wider application range.

In some embodiments of the present invention, the detachable structure includes a dovetail groove 201 and a rib 101, the dovetail groove 201 and the rib 101 both extend forward and backward, the rib 101 is fitted into the dovetail groove 201, and one of the dovetail groove 201 and the rib 101 is provided in the first unit 100, and the other is provided in the side unit. Referring to fig. 3, the dovetail groove 201 is provided in the side unit, the dovetail groove 201 penetrates the side unit in the front-rear direction, the cross section of the protrusion 101 is trapezoidal, and the protrusion 101 is inserted into the dovetail groove 201 from front to rear; the side unit is connected with the first unit 100 compactly, and has simple structure and convenient assembly and disassembly.

In some embodiments of the invention, the third unit 300 is provided with a drawer 310. The third unit 300 is provided with a first inner cavity, the front side of which is open, and the drawer 310 is provided in the first inner cavity; by providing the drawer 310, the third unit 300 can store articles therein, facilitating housing.

In some embodiments of the present invention, the second unit 200 has a second inner cavity, a front side of the second inner cavity is open, a sliding table assembly is disposed in the second inner cavity, the sliding table assembly includes a sliding seat 250 and a table top 210, the table top 210 is disposed on a front side of the sliding seat 250, and the sliding seat 250 is slidably connected with a cavity wall of the second inner cavity in a front-back manner. The bottom wall of the second inner cavity is provided with a guide rail 260, the sliding seat 250 is provided with a sliding block 270, and the sliding block 270 is matched with the sliding rail to realize sliding connection; when the table top is used, the table top 210 can be pulled out to place drinks, books and other objects, and the table top 210 can be pushed back into the second inner cavity when the table top 210 is not used, so that the space occupation is reduced.

In some embodiments of the present invention, the sliding table assembly further includes two first links 220, the two first links 220 are spaced apart from each other, the two first links 220 extend forward and backward, two ends of the first links 220 are respectively hinged to the sliding seat 250 and the table top 210, one of the first links 220 is referred to as a positioning link 240, and a hinge axis at the hinge point of the positioning link 240 and the table top 210 is referred to as a second hinge axis; the bottom of the table top plate 210 is provided with a second connecting rod 230, the second connecting rod 230 extends forwards and backwards, a hinge shaft at the hinged position of the front end of the second connecting rod 230 and the table top plate 210 is called a third hinge shaft, the third hinge shaft is parallel to the second hinge shaft, the positioning connecting rod 240 is provided with a plurality of clamping grooves 241, the plurality of clamping grooves 241 are sequentially arranged along the axial direction of the positioning connecting rod 240, the rear end of the second connecting rod 230 is provided with a clamping head 231, and the clamping head 231 is matched with the clamping grooves 241. Referring to fig. 2, the sliding table assembly extends out of the second inner cavity, the rear end of the first connecting rod 220 is hinged to the front end of the sliding seat 250, the front end of the first connecting rod 220 is hinged to the rear end of the table top plate 210, the table top plate 210 is transversely arranged, the two first connecting rods 220 are the same in length and are arranged in parallel to form a parallelogram mechanism, so that after the table top plate 210 is pulled out, the vertical position of the table top plate 210 can be adjusted, the table top plate 210 cannot be inclined, and after the table top plate is adjusted to a required position, the clamping heads 231 are clamped and embedded into the corresponding clamping grooves 241, so that the current height can be fixed, the structure is simple, and the adjustment is simple and convenient; the first link 220 and the second link 230 are collectively referred to as a connecting assembly, the number of the connecting assemblies is one, the first link 220 and the second link 230 have a larger width and are disposed in the middle of the table top 210 to maintain the structural stability, the number of the connecting assemblies is two, the second link 230 of the first link 220 has a smaller width, and the two connecting assemblies are disposed on two sides of the table top 210 respectively.

The third hinge shaft is disposed in front of the second hinge shaft, a distance between the third hinge shaft and the second hinge shaft is referred to as a first size, among the plurality of clamping grooves 241, the clamping groove 241 closest to the second hinge shaft is referred to as an end clamping groove 241, the distance between the end clamping groove 241 and the second hinge shaft is greater than a difference between a length of the second connecting rod 230 and the first size, a connecting seat protruding leftward is disposed at a left side of the positioning connecting rod 240, the clamping groove 241 is disposed at the connecting seat, a bottom of the clamping groove 241 is open, the clamping head 231 is disposed at a right side of the second connecting rod 230, the clamping head 231 moves upward to be clamped into the clamping groove 241, the positioning connecting rod 240 and the second connecting rod 230 are respectively disposed at two sides of the connecting seat, and the clamping head 231 moves downward to be separated from the clamping groove 241, such that when the table top plate 210 is not needed, the first connecting rod 220 and the second connecting rod 230 both extend forward and backward, the second connecting rod 230 and the clamping head 231 are disposed at a front side of the connecting seat, a vertical size of the table assembly is small, the structure is compact, the occupied space is small, and the second inner cavity is convenient to place.

While the preferred embodiments of the present invention have been described in detail, it should be understood that the invention is not limited to those precise embodiments, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined in the appended claims.

Claims

1. A multifunctional sofa is characterized in that: the circuit comprises a first unit and two side units, wherein the two side units are respectively called a second unit and a third unit, the second unit and the third unit are respectively arranged at two ends of the first unit, and the direction of the second unit relative to the third unit is taken as the left; the first unit comprises a framework and a wrapping part, the wrapping part wraps the outer side of the framework, the framework comprises a first frame body and a second frame body, the first frame body is arranged on the left side of the second frame body, a hinge shaft at the hinged part of the first frame body and the second frame body is called a first hinge shaft, the first hinge shaft extends forwards and backwards, and a locking device is connected between the first frame body and the second frame body; the side unit is provided with a flexible section, and the flexible section is connected between the first unit and the side unit.

2. The multi-purpose sofa of claim 1, wherein: the locking device comprises a first gear, a second rotating shaft, a hand wheel, a friction plate and a knob, the first gear is linked with the second gear, the first gear is coaxial with the first hinge shaft, and the first gear is fixedly connected with the first frame body; the second rotating shaft and the friction plate are both arranged on the second frame body, the second gear and the hand wheel are both sleeved on the outer side of the second rotating shaft, the second gear and the hand wheel coaxially rotate, the second rotating shaft penetrates through the wrapping part from inside to outside, the second gear is arranged on the inner side of the wrapping part, and the hand wheel is arranged on the outer side of the wrapping part; the one end of second pivot is equipped with the external screw thread, the hand wheel side is equipped with the knob, the knob is equipped with the internal thread hole, the knob with second pivot threaded connection, the friction disc the second gear the hand wheel with the knob is followed the axial of second pivot sets up in order.

3. The multi-purpose sofa of claim 2, wherein: the first gear is meshed with the second gear, and the number of teeth of the second gear is smaller than that of the first gear.

4. The multi-purpose sofa of claim 2, wherein: the second support body is provided with a third rotating shaft, the third rotating shaft is provided with a third gear and a fourth gear in a rotating mode, the third gear is fixedly connected with the fourth gear, the third gear is meshed with the first gear, the fourth gear is meshed with the second gear, and the number of teeth of the third gear is larger than that of teeth of the fourth gear.

5. The multi-purpose sofa of claim 2, wherein: the hand wheel is equipped with connecting portion, connecting portion are the tubulose, connecting portion cover in the second pivot outside, connecting portion with second gear rigid coupling, the lateral wall of parcel portion is equipped with the go-between, the go-between ring cover in the outside of connecting portion, the go-between with connecting portion rotate to be connected.

6. The multi-purpose sofa of claim 1, wherein: the first unit and the side unit are connected by a detachable structure.

7. The multi-purpose sofa of claim 6, wherein: the detachable structure comprises a dovetail groove and a convex strip, the dovetail groove and the convex strip extend forwards and backwards, the convex strip is matched with the dovetail groove, one of the dovetail groove and the convex strip is arranged on the first unit, and the other one of the dovetail groove and the convex strip is arranged on the side unit.

8. The multi-purpose sofa of claim 1, wherein: the third unit is provided with a drawer.

9. The multi-purpose sofa of claim 1, wherein: the second unit is provided with a second inner cavity, the front side of the second inner cavity is open, a sliding table component is arranged in the second inner cavity and comprises a sliding seat and a table top plate, the table top plate is arranged on the front side of the sliding seat, and the sliding seat is connected with the cavity wall of the second inner cavity in a front-back sliding mode.

10. The multi-purpose sofa of claim 9, wherein: the sliding table component also comprises two first connecting rods which are arranged at intervals up and down, the two first connecting rods extend forwards and backwards, two ends of each first connecting rod are respectively hinged with the sliding seat and the table top plate, one first connecting rod is called a positioning connecting rod, and a hinge shaft at the hinged position of the positioning connecting rod and the table top plate is called a second hinge shaft; the tabletop plate is characterized in that a second connecting rod is arranged at the bottom of the tabletop plate, the second connecting rod extends forwards and backwards, a hinge shaft at the hinged position of the front end of the second connecting rod and the tabletop plate is called a third hinge shaft, the third hinge shaft is parallel to the second hinge shaft, the positioning connecting rod is provided with a plurality of clamping grooves, the plurality of clamping grooves are sequentially arranged along the axial direction of the positioning connecting rod, and a clamping head is arranged at the rear end of the second connecting rod and is matched with the clamping grooves.