COMFORTABLE INFLATABLE SOFA

Abstract

The present invention discloses a comfortable inflatable sofa, including a sofa backrest and a sofa cushion, which are connected to each other to form an inflatable cavity. The sofa backrest and the sofa cushion are made of PVC or TPU, or are made of PVC or TPU as a base material with pile and cloth coated. Several pulling straps are provided in the inflatable cavity. The sofa of the present invention has good durability and high practicality, is not prone to deformation and convenient to carry and can be used widely, with the surface having good flexibility and high comfort.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims priorities from Chinese Application No. CN 202222239331.3, filed on Aug. 24, 2022, and Chinese Application No. CN 202222804776.1, filed on Oct. 24, 2022, all of which are hereby incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to the field of household supplies, and more particularly, relates to a comfortable inflatable sofa.

BACKGROUND

With the development of economy, people's living standards increasingly improve, resulting in high requirements for household supplies, among other things, sofas are essential for mostly all families. However, most of the sofas on the market are formed by a wooden material frame with springs and rope nets mounted therein, with stuffing filled therein, and finally with wrapper, such as leather or cloth, packaged thereon, which is usually large in volume and weight, needing a large space to store, and thus is not easy to move or carry, and not easy to package or transport, and not suitable for outdoor places, exhibitions and other environments, causing restricted scenes of use.

Contrary, inflatable sofas have advantages of light weight and carrying easy, overcoming some of the defects of traditional sofas.

CN201468613U discloses an inflatable sofa including an outer side piece, a reinforced side piece, an inner side piece, an upper piece, a lower piece, cushion columnar pulling straps, corner pulling straps, and a back pulling strap piece. In such configuration, the outer side piece, the reinforced side piece, and the inner side piece are L-shaped, the inflatable cavity of the sofa body is formed by thermal combination of the inner side piece with the upper piece and the lower piece, and the arms of sofa formed by thermal combination of the outer side piece, the reinforced side piece and the inner side piece.

CN206809008U discloses an inflatable sofa having a sofa body, including a base and a back, an air chamber being formed in the base and the back. A first pulling strap is provided at the joint of the upper end surface of the base and the front end surface of the back, a second pulling strap is transversely provided at the front end surface of the backrest is provided with, and a protrusion for waist supporting is formed on the front end surface of the back between the first pulling strap and the second pulling strap. Further, the upper end surface of the back extends obliquely and downwardly from the middle to both sides. The rear end surface of the back is provided with an air valve, and an oval third pulling strap is provided at the upper end surface of the base, a region defined by the third pulling strap forms a recessed portion.

However, the existing inflatable sofas still have disadvantages of less durability and less comfortability. In addition, the inflatable sofas with unreasonable design are prone to deformation and dislocation, as such sofas maintain in shape with gas filled.

SUMMARY

In order to overcome at least one of the above defects in the prior art, the present invention thus provides a comfortable inflatable sofa, which has advantages of high durability, high comfortability, and not prone to deformation.

The comfortable inflatable sofa according to the present invention includes a sofa backrest and a sofa cushion, which are connected to each other to form an inflatable cavity. The sofa backrest and the sofa cushion are made of PVC or TPU, or the sofa backrest and the sofa cushion are made of a base material of PVC or TPU with pile or cloth coated, and several pulling straps are provided in the inflatable cavity.

The sofa backrest and the sofa cushion are used for supporting the back and legs of a user respectively. Upon the inflatable cavity being filled with gas, the comfortable inflatable sofa forms a basic and specific shape. While the comfortable inflatable sofa will be smaller in size without gas filled in the inflatable cavity, thereby making the sofa easy to store and carry, thus achieving high practicability. On the other hand, PVC has the advantages of light weight, high strength, strong tensile strength, high durability and relative softness, and TPU has the advantages of strong tensile strength, good toughness, ageing resistance, environmental protection, etc. The surface of PVC and TPU is flocked or pasted with cloth, making the sofa backrest and the sofa cushion soft in touch, slip and wear resistant, and more breathable, greatly enhancing the comfort level. Moreover, the pulling straps have function of fastening and fixing, making the external shape and internal structure of the sofa remain relatively stable to be not prone to greater deformation when bearing weight.

Specifically, the sofa backrest and the sofa cushion may include a sofa front piece, a sofa back piece, and a sofa bottom piece, the sofa bottom piece being connecting the lower end of the sofa front piece and the sofa back piece. The sofa front piece may be an integrated sofa front piece or a split sofa front piece.

The integrated sofa front piece may include a backrest part, a cushion part, and a footrest part. The integrated sofa front piece is of a single-piece structure formed integrally, reducing seams and reducing the risk of air leakage and tears that may be caused by poorly connected seams. The split sofa front piece may include a backrest piece, a cushion surface piece and cushion side pieces, the backrest piece, the cushion surface piece and the cushion side piece being smoothly connected in sequence. The split sofa front piece is of a multi-piece structure, and assembled and formed by fusing or bonding, facilitating producing and processing. The backrest piece, the cushion surface piece, and the cushion side piece are smoothly connected in sequence, giving the comfortable inflatable sofa a more regular shape and thus increasing comfort level.

One or more separate piece may be provided in the inflatable cavity according to at least one embodiment, which connects the sofa front piece, the sofa back piece, and the sofa bottom piece, and has a shape matching the outer contour of the comfortable inflatable sofa.

A plurality of shaping pieces may be further provided in the soft cushion in the longitudinal direction, each shaping piece has the same shape with the longitudinal section of the sofa cushion.

Preferably, adjacent shaping pieces are partially attached to each other or connected by several sheet-like pulling straps and/or columnar pulling straps.

The sofa cushion is provided with sofa armrests on both sides thereof, each sofa armrest is higher than the sofa cushion, and each sofa armrest is a split armrest or an integrated armrest.

A first pulling strap combination may be further provided in the sofa armrest, which includes a sheet-like pulling strap and/or a columnar pulling strap.

When the sofa front piece is an integrated sofa front piece which includes a backrest part, a cushion part, and a footrest part. A second pulling strap combination may be connected between the backrest part and the sofa back piece according to at least one embodiment of the present invention, which includes several sheet-like pulling straps and/or columnar pulling straps.

The width of the pulling straps of the second pulling strap combination preferably gradually increases from top to bottom. The width of the pulling strap refers to the dimension of the pulling strap in the direction of the tensile force. In general, the width of such pulling strap is equal to the distance between objects connected to both ends of the pulling strap in the direction of the pulling straps.

A third pulling strap combination may be connected between the cushion part and the sofa bottom piece, which includes several sheet-like pulling straps and/or columnar pulling straps.

The height of the pulling straps of the third pulling strap combination gradually increases in the direction opposite to the sofa back piece.

A fourth pulling strap combination may be further connected between the footrest part and the third pulling strap combination, which includes several sheet-like pulling straps and/or columnar pulling straps.

When the sofa front piece is a split sofa front piece which includes a backrest piece, a cushion surface piece and cushion side pieces, which smoothly connected in sequence. A backrest additive may be provided between the backrest piece and the cushion surface piece to improve the strength of the structure, making the connection stronger and less prone to breakage and air leakage.

In such embodiment including the split sofa front piece, a fifth pulling strap combination may be connected between the backrest piece and the sofa back piece, which includes several sheet-like pulling straps and/or columnar pulling straps.

In order to make the thickness of the sofa backrest uniform, the height of the pulling straps of the fifth pulling strap combination is equal.

A sixth pulling strap combination may be further connected between the cushion surface piece and the sofa bottom piece, which includes several piece-shaped pulling straps and/or columnar pulling straps.

The lower end of the sofa back piece may be provided with a long strip-shaped backrest support piece or backrest bottom piece, which is configured to be fitted to the floor when in use.

The sofa back piece is provided with an inflating/deflating device for inflating or deflating the comfortable inflatable sofa.

In addition, the upper end of the sofa backrest is provided with a head support region to support the user's head, thus improving comfort.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic view according to one embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a left view of FIG. 1, dotted lines showing the sofa backrest, the sofa cushion, and the pulling straps;

FIG. 4 is a structural schematic view according to an alternative embodiment of the present invention;

FIG. 5 is a structural schematic view according to an alternative embodiment of the present invention;

FIG. 6 is a structural schematic view according to an alternative embodiment of the present invention;

FIG. 7 is a structural schematic view according to an alternative embodiment of the present invention;

FIG. 8 is a structural schematic view according to another embodiment of the present invention;

FIG. 9 is a left view of FIG. 8;

FIG. 10 is a rear view of FIG. 9;

FIG. 11 is a structural exploded view of FIG. 8;

FIG. 12 is a structural schematic view according to an alternative embodiment of the present invention;

FIG. 13 is a left view of FIG. 12;

FIG. 14 is a rear view of FIG. 12;

FIG. 15 is a structural exploded view of FIG. 12;

FIG. 16 is a structural schematic view according to an alternative embodiment of the present invention;

FIG. 17 is a left view of FIG. 16;

FIG. 18 is a rear view of FIG. 16; and

FIG. 19 is a structural exploded view of FIG. 16.

DETAILED DESCRIPTION

The accompanying drawings are for exemplary illustration only, and should not be construed as limitations on the present invention. in order to better illustrate the following embodiment, some parts in the accompanying drawings may be omitted, enlarged or reduced, and they do not represent the size of the actual product; for those skilled in the art, it is understandable that certain well-known structures and descriptions thereof in the drawings may be omitted.

FIGS. 1-3 provides a comfortable inflatable sofa according to one embodiment, including a sofa backrest 100 and a sofa cushion 200, which are connected to each other to form an inflatable cavity 400. The sofa backrest 100 and the sofa cushion 200 are made of PVC or TPU, or the sofa backrest 100 and the sofa cushion 200 are made of a base material of PVC or TPU with pile or cloth coated, and several pulling straps are provided in the inflatable cavity 400.

The sofa backrest 100 and the sofa cushion 200 are used for supporting the back and legs of a user respectively. Upon the inflatable cavity 400 being filled with gas, the comfortable inflatable sofa forms a basic and specific shape. While the comfortable inflatable sofa will be smaller in size without gas filled in the inflatable cavity 400, thereby making the comfortable inflatable sofa easy to store or carry, thus achieving high practicability. On the other hand, PVC has the advantages of light weight, high strength, strong tensile strength, high durability and relative softness, and TPU has the advantages of strong tensile strength, good toughness, ageing resistance, environmental protection, etc. The surface of PVC and TPU is flocked or pasted with cloth, making the sofa backrest 100 and the sofa cushion 200 soft in touch, slip and wear resistant, and more breathable, greatly enhancing the comfort level. Moreover, the pulling straps have function of fastening and fixing, making the external shape and internal structure of the comfortable inflatable sofa remain relatively stable to be not prone to greater deformation when bearing weight.

As shown in FIG. 2, in this embodiment, the sofa backrest 100 and the sofa cushion 200 include a sofa front piece 500, a sofa back piece 600, and a sofa bottom piece 700, the sofa bottom piece 700 being connecting the lower end of the sofa front piece 500 and the sofa back piece 600. The sofa front piece 500 is an all-in-one sofa front piece 510 in this embodiment. The sofa backrest 100 and the sofa cushion 200 are connected in an “L” shape, and so do the sofa back piece 600 and the sofa bottom piece 700, which is in line with the sitting posture habit of a human body. The sofa bottom piece 700 is in contact with the floor when in use so that the comfortable inflatable sofa can be stably placed on the floor as a whole. The sofa front piece 500 is tightly attached the user for supporting the user's body in use. The sofa front piece 500, the sofa back piece 600, and the sofa bottom piece 700 may be fused or bonded to define the external contour of the sofa backrest 100 and the sofa cushion 200 in any known way, making the structure of the sofa simple and facilitating producing and processing thereof.

FIG. 3 shows that the all-in-one sofa front piece 510 includes a backrest part 511, a cushion part 512 and a footrest part 513, which is of a single-piece structure formed integrally, thereby reducing possible seams and reducing the risks of air leakage and tears due to poor seams, and the parts are in smooth transition. In the present embodiment, the angle between the backrest part 511 and the cushion part 512 is greater than 90° and the angle between the cushion part 512 and the footrest part 513 is less than 90°, in line with the ergonomic principle.

Referring back to FIG. 2, the sofa cushion 200 is provided with sofa armrests 300 on both sides, each sofa armrest 300 being higher than the sofa cushion 200. The sofa armrests 300 serve to support the user's hand, and the sofa armrests 300 are higher than the sofa cushion 200, so that the user can rest his/her hands more comfortably on the armrests 300. Each sofa armrest 300 is formed in an “L” shape to match the sofa backrest 100 and the sofa cushion 200. As shown, a first pulling strap combination 310 is provided in each sofa armrest 300. In the present embodiment, the first pulling strap combination 310 includes one “L”-shaped columnar pulling strap, which serves to maintain the shape of the sofa armrest 300 to make the sofa armrest not prone to deformation under pressure. The sofa armrest 300 in this embodiment is a split armrest which has a relatively independent internal space while communicating with the sofa cushion 200, so that there is a clear boundary between the sofa armrest 300 and the sofa cushion 200, the sofa armrest 300 thus is more stable in form and facilitates shaping. However, the sofa armrest 300 may also be an integrated armrest according to other embodiments.

As shown in FIG. 2, a second pulling strap combination 420 is connected between the backrest part 511 and the sofa back piece 600. In the present embodiment, the second pulling strap combination 420 includes a “U”-shaped columnar pulling strap and a sheet-like pulling strap. The second pulling strap combination 420 serves to maintain the distance between the backrest part 511 and the sofa back piece 600, i.e., maintain the thickness of the sofa backrest 100. FIG. 3 shows that the width of the pulling strap of the second pulling strap combination 420 in the direction of the backrest part 51 gradually increases from top to bottom, so that the backrest part 511 is gradually farther away from the sofa back piece 600 from top to bottom to better support the waist of a user, allowing the user to sit in a more comfortable posture.

As shown in FIG. 3, a third pulling strap combination 430 is connected between the cushion part 512 and the sofa bottom piece 700. In the present embodiment, the third pulling strap combination 430 includes four sheet-like pulling straps. The third pulling strap combination 430 serves to maintain the distance between the cushion part 512 and the sofa bottom piece 700, making the cushion part 512 flatter. The height of the pulling straps of the third pulling strap combination 430 gradually increases in the direction opposite to the sofa back piece 600. Such height variation allows the cushion part 512 to have a certain inclined angle, adapting to the shape of the human body's hips and legs.

As shown in FIG. 3, a fourth pulling strap combination 440 is connected between the footrest part 513 and the third pulling strap combination 430. In the present embodiment, the fourth pulling strap combination 440 includes a “U”-shaped columnar pulling strap. The fourth pulling strap combination 440 is connected to the third pulling strap combination 430 to enhance the stability and connectivity of the internal structure, while maintaining the shape of the footrest part 513.

The second pulling strap combination 420 connects the backrest part 511 to the sofa back piece 600 and the third pulling strap combination 430 connects the cushion part 512 to the sofa bottom piece 700, which defines the basic contour of the comfortable inflatable sofa. The backrest part 511 and the cushion part 512 are directly squeezed when in use, however, such structure can make the comfortable inflatable sofa less prone to greater deformation. According to the present embodiment, the lowermost pulling strap of the second pulling strap combination 420 is in reinforcement connection with the sofa bottom piece 700 by one sheet-like pulling strap.

In the present embodiment, the sofa back piece 600 is provided with an inflating/deflating device (not shown in the figure) for inflating or deflating the sofa. The rear inflating/deflating device arranged on the sofa back piece 600 can avoid a position in frequent contact with the user and thus reduce the risk of air leakage caused by accidentally touching the inflating/deflating device during use.

As shown in FIG. 4, the “U”-shaped columnar pulling strap in the second pulling strap combination 420 can be designed to a plurality of relatively independent circular columnar pulling straps, and the “U”-shaped columnar pulling strap in the fourth pulling strap combination 440 can be designed to a plurality of relatively independent circular columnar pulling straps. Due to more connection points, the plurality of relatively independent circular columnar pulling straps thus can make the backrest part 511 and the footrest part 513 more flat.

Additionally or alternatively, as shown in FIG. 5, a plurality of separate pieces 410 are provided in the inflatable cavity 400, each separate piece 410 connects the sofa front piece 500, the sofa back piece 600 and the sofa bottom piece 700, having a shape matches the outer contour of the comfortable inflatable sofa. In such embodiment, two separate pieces 410 are provided to equally divide the sofa into three seats, forming comfortable and reasonable seating space for the user, thus enhancing practicality. Accordingly, in this case, the second pulling strap combination 420, the third pulling strap combination 430, and the fourth pulling strap combination 440 can be respectively provided independently in each seat. That is, in this case, each seat is provided with a set of the pulling straps as the embodiment shown in FIGS. 1-3.

As shown in FIG. 6, the “U”-shaped columnar pulling strap in the second pulling strap combination 420 shown in FIG. 5 can be replaced by a plurality of relatively independent circular columnar pulling straps, and the “U”-shaped columnar pulling strap in the fourth pulling strap combination 440 shown in FIG. 5 can be replaced by a plurality of relatively independent circular columnar pulling straps. Due to more connection points are formed, the plurality of relatively independent circular columnar pulling straps can make the backrest part 511 and the footrest part 513 more flat.

As shown in FIG. 7, a vertical positional relationship is formed between the sheet-like pulling straps of the third pulling strap combination 430. Specifically, some sheet-like pulling straps of the third pulling strap combination 430 are perpendicular to the others.

FIGS. 8-11 shows a comfortable inflatable sofa according to another embodiment, including a sofa backrest 100 and a sofa cushion 200, which are connected to each other to form an inflatable cavity 400. The sofa backrest 100 and the sofa cushion 200 are made of PVC or TPU, or the sofa backrest 100 and the sofa cushion 200 are made of a base material of PVC or TPU with pile or cloth coated, and several pulling straps are provided in the inflatable cavity 400.

The sofa backrest 100 and the sofa cushion 200 include a sofa front piece 500, a sofa back piece 600, and a sofa bottom piece 700, the sofa bottom piece 700 being connecting the lower end of the sofa front piece 500 and the sofa back piece 600. The sofa front piece is a split sofa front piece 520 in this embodiment. The sofa backrest 100 and the sofa cushion 200 are connected in an “L” shape, and so do the sofa back piece 600 and the sofa bottom piece 700, which is in line with the sitting posture habit of a human body. The sofa bottom piece 700 is in contact with the floor when in use so that the comfortable inflatable sofa can be stably placed on the floor as a whole. The sofa front piece 500 is tightly attached the user for supporting the user's body in use. The sofa front piece 500, the sofa back piece 600, and the sofa bottom piece 700 may be fused or bonded to define the external contour of the sofa backrest 100 and the sofa cushion 200 in any known way, making the structure of the sofa simple and facilitating producing and processing thereof.

In combination with FIG. 8 and FIG. 11, the split sofa front piece 520 includes a backrest piece 521, a cushion surface piece 522 and cushion side pieces 523, which are smoothly connected in sequence. The split sofa front piece 520 in this embodiment is of a multi-piece structure, which are assembled and formed into one by any known way, such as fusing or bonding, thus facilitating producing and processing. The backrest piece 521, the cushion surface piece 522 and the cushion side piece 523 are smoothly connected in sequence, giving the comfortable inflatable sofa a more regular shape and increasing the comfort level thereof.

As shown in FIG. 11, shaping pieces 210 are provided in the soft cushion 200 in the longitudinal direction, the shaping piece 210 has the same shape with the longitudinal section of the sofa cushion 200. As the sofa cushion 200 is subjected to a high pressure in the longitudinal direction when in use, the shaping piece 210 can maintain the shape of the sofa cushion 200 to make the sofa cushion 200 flatter without bulge partially. In the present embodiment, three shaping pieces 210 are provided, and adjacent shaping pieces 210 are partially attached to each other, i.e., directly connected by means of fusing or bonding, to enhance the stability of the shaping pieces 210, thus making local deformation or dislocation less likely to be caused.

As shown in FIG. 8, the sofa cushion 200 is provided with sofa armrests 300 on both sides, each sofa armrest 300 being higher than the sofa cushion 200. The sofa armrests 300 serve as to support the user's hand. The sofa armrests 300 are higher than the sofa cushion 200 to support the user's hand, so that the user can rest his/her hand more comfortably on the armrest 300. Each sofa armrest 300 is an integrated armrest formed by protrusions on both sides of the sofa cushion 200 and is smoothly connected with the sofa cushion 200, with a greater degree of deformation when pressed, better fitting the posture of the user and making the user feel more comfortable.

As shown in FIG. 11, a backrest additive 110 is provided between the backrest piece 521 and the cushion surface piece 522, Which serves to improve the strength of the structure, making the connection therebetween stronger and the structure less prone to breakage and air leakage.

As shown in FIG. 11, a fifth pulling strap combination 450 is connected between the backrest piece 521 and the sofa back piece 600. The fifth pulling strap combination 450 in the present embodiment includes two “U”-shaped columnar pulling straps and one sheet-like pulling strap. The fifth pulling strap combination 450 can maintain the distance between the backrest piece 521 and the sofa back piece 600. The height of each pulling strap of the fifth pulling strap combination 450 is equal, thus making the thickness of the sofa backrest 100 uniform.

As shown in FIG. 9, the lower end of the sofa back piece 600 is provided with a long strip-shaped backrest support piece 120. The backrest support piece 120 is fitted to the floor when in use to fix the sofa backrest 100, so that the comfortable inflatable sofa remains stable when the sofa backrest 100 is under pressure and the whole structure is not prone to move backwards or tilt.

In the present embodiment, the sofa back piece 600 is provided with an inflating/deflating device (not shown in the figure), which is configured for inflating or deflating the sofa. The rear inflating/deflating device arranged on the sofa back piece 600 can avoid a position in frequent contact with the user and to reduce the risk of air leakage caused by accidentally touching the inflating/deflating device during use.

As shown in FIG. 9, the upper end of the sofa backrest 100 is provided with a head support region 140 which protrudes out of the upper end of the sofa backrest 100 to support the user's head, thereby further improving comfort.

As shown in FIGS. 12-15, two “U”-shaped columnar pulling straps of the fifth pulling strap combination 450 shown in FIGS. 8-11 can be designed to a plurality of relatively independent oval columnar pulling straps, and the sheet-like pulling strap of the fifth pulling strap combination 450 can be replaced by a “U”-shaped columnar pulling strap. Adjacent shaping pieces 210 can also be connected by a columnar pulling strap to enhance the stability of the shaping pieces 210, making partial deformation or dislocation less likely to be caused. In addition, the lower end of the sofa back piece 600 can be provided with a long strip-shaped backrest bottom piece 130.

As shown in FIGS. 16-19, two “U”-shaped columnar pulling straps of the fifth pulling strap combination 450 shown in FIGS. 8-11 can be replaced by one gourd-shaped columnar pulling strap. A sixth pulling strap combination 460 is connected between the cushion surface piece 522 and the sofa bottom piece 700 to maintain the shape of the cushion surface piece 522 and make the cushion surface piece 522 flatter, which includes three sheet-like pulling straps. A first pulling strap combination 310 can be provided in each sofa armrest 300 to maintain the shape of the sofa armrest 300, which includes two sheet-like pulling straps, the sofa armrest is thus not prone to deformation under pressure.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solution of the present invention, rather than limiting the embodiments of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the claims of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A comfortable inflatable sofa, comprising a sofa backrest and a sofa cushion, which are connected to each other to form an inflatable cavity, wherein the sofa backrest and the sofa cushion are made of PVC or TPU, or the sofa backrest and the sofa cushion are made of a base material of PVC or TPU with pile or cloth coated, and several pulling straps are provided in the inflatable cavity.

2. The comfortable inflatable sofa according to claim 1, wherein the sofa backrest and the sofa cushion comprise a sofa front piece, a sofa back piece and a sofa bottom piece, the sofa bottom piece being connecting the lower end of the sofa front piece and the sofa back piece.

3. The comfortable inflatable sofa according to claim 2, wherein one or more separate piece is provided in the inflatable cavity, which connects the sofa front piece, the sofa back piece, and the sofa bottom piece, and has a shape matching an outer contour of the comfortable inflatable sofa.

4. The comfortable inflatable sofa according to claim 1, wherein a plurality of shaping pieces are provided in the soft cushion in a longitudinal direction, each shaping piece has the same shape with a longitudinal section of the sofa cushion.

5. The comfortable inflatable sofa according to claim 4, wherein adjacent shaping pieces are partially attached to each other or connected by several sheet-like pulling straps and/or columnar pulling straps.

6. The comfortable inflatable sofa according to claim 1, wherein the sofa cushion is provided with sofa armrests on both sides, each sofa armrest is higher than the sofa cushion, and each sofa armrest is a split armrest or an integrated armrest.

7. The comfortable inflatable sofa according to claim 6, wherein a first pulling strap combination is provided in each sofa armrest, which comprises a sheet-like pulling strap and/or a columnar pulling strap.

8. The comfortable inflatable sofa according to claim 2, the sofa front piece is an integrated sofa front piece, comprising a backrest part, a cushion part, and a footrest part.

9. The comfortable inflatable sofa according to claim 8, wherein a second pulling strap combination is connected between the backrest part and the sofa back piece, which comprises several sheet-like pulling straps and/or columnar pulling straps.

10. The comfortable inflatable sofa according to claim 9, wherein a width of the pulling strap of the second pulling strap combination gradually increases from top to bottom.

11. The comfortable inflatable sofa according to claim 8, wherein a third pulling strap combination is connected between the cushion part and the sofa bottom piece, which comprises several sheet-like pulling straps and/or columnar pulling straps.

12. The comfortable inflatable sofa according to claim 11, wherein a height of the pulling straps of the third pulling strap combination gradually increases in the direction opposite to the sofa back piece.

13. The comfortable inflatable sofa according to claim 11, wherein a fourth pulling strap combination is connected between the footrest part and the third pulling strap combination, which comprises several sheet-like pulling straps and/or columnar pulling straps.

14. The comfortable inflatable sofa according to claim 2, wherein the sofa front piece is a split sofa front piece comprising a backrest piece, a cushion surface piece and cushion side pieces, which smoothly connected in sequence.

15. The comfortable inflatable sofa according to claim 14, wherein a backrest additive is provided between the backrest piece and the cushion surface piece.

16. The comfortable inflatable sofa according to claim 14, wherein a fifth pulling strap combination is connected between the backrest piece and the sofa back piece, which comprises several sheet-like pulling straps and/or columnar pulling straps.

17. The comfortable inflatable sofa according to claim 16, wherein a height of each pulling strap of the fifth pulling strap combination is equal.

18. The comfortable inflatable sofa according to claim 14, wherein a sixth pulling strap combination is connected between the cushion surface piece and the sofa bottom piece, which comprises several sheet-like pulling straps and/or columnar pulling straps.

19. The comfortable inflatable sofa according to claim 2, wherein a lower end of the sofa back piece is provided with a long strip-shaped backrest support piece or a backrest bottom piece, which is configured to be fitted to floor when in use; or an upper end of the sofa backrest is provided with a head support region.

20. The comfortable inflatable sofa according to claim 2, wherein the sofa back piece is provided with an inflating/deflating device.