Seat capable of being independently transformed into bed

Abstract

The utility model discloses a seat capable of being independently transformed into a bed, which comprises a base, a seat cushion component is arranged on the base, a backrest is arranged at the rear end of the seat cushion component, a swing arm extending towards the direction of the base is arranged on the lateral portion of the backrest, the lower end of the swing arm is rotatably connected with the base, and the swing arm rotates forwards relative to the base. The backrest can be flatly turned forwards and is connected to the front end of the seat cushion assembly; the seat cushion assembly comprises an upper-layer seat cushion and a lower-layer seat cushion which are arranged in an up-down overlapped mode, and the upper-layer seat cushion can be overturned backwards to be in a horizontal state relative to the lower-layer seat cushion. The bed has the beneficial effect that the bed can be conveniently and quickly deformed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a seat which can be independently transformed into a bed. Background Art

[0002] With rapid economic development, cars have become people's most important means of transportation, and users' expectations for vehicles are becoming increasingly high. They expect vehicles to provide multi-functional use cases, such as long-distance travel and camping, and to provide space for rest and sleep. To meet these needs, some large SUVs and commercial vehicles have introduced large bed rest modes, allowing users to lie down and rest.

[0003] However, in current automotive applications, reclining and resting functions are typically achieved through the following methods: 1. Connecting the first and second rows of seats to form a bed; 2. Folding the second and third row seatbacks and integrating them with the trunk floor to form a bed. Both of these methods require either two rows of seats to be combined or simultaneously integrated with the trunk floor to form a bed, which is challenging to operate, cumbersome, and lacks spatial adaptability, resulting in numerous drawbacks.

[0004] Therefore, there is an urgent need to design a seat that can be independently transformed into a bed to solve the technical problems that the current car seat transformation into a bed has complicated steps and is difficult to operate. Utility Model Content

[0005] In view of this, the present invention provides a chair that can be independently transformed into a bed, which can be transformed into a bed conveniently and quickly.

[0006] To achieve the above purpose, the technical solution of this utility model is as follows:

[0007] A chair that can be independently transformed into a bed, comprising a base, a seat cushion assembly provided on the base, and a backrest arranged at the rear end of the seat cushion assembly, the key point of which is that: a swing arm extending toward the base is provided on the side of the backrest, the lower end of the swing arm is rotatably connected to the base, and the swing arm rotates forward relative to the base, so that the backrest can be tilted forward and connected to the front end of the seat cushion assembly; the seat cushion assembly includes an upper seat cushion and a lower seat cushion arranged in an overlapping manner, and the upper seat cushion can be flipped backward to a horizontal state relative to the lower seat cushion.

[0008] With this structure, when the car seat is in the sitting position, the lower and upper seat cushions overlap to ensure normal seat function. When the user needs to lie down for a rest, they rotate the swing arm forward using the base as a fulcrum, which drives the swing arm and the backrest at its upper end to flip as a whole, causing the backrest to fall forward and connect to the front end of the seat cushion assembly. The upper seat cushion is then flipped backward to a horizontal position, and the backrest, lower seat cushion, and upper seat cushion are now connected to form a bed.

[0009] Preferably, the base is provided with a first driving mechanism for driving the lower end of the swing arm to rotate.

[0010] Preferably, a flipping drive mechanism is provided between the upper seat cushion and the lower seat cushion, for driving the upper seat cushion to flip backward relative to the lower seat cushion.

[0011] Preferably, the flip drive mechanism includes a drive assembly, a first gear fixedly mounted on the rear end of the lower seat cushion, a second gear rotatably mounted on the rear end of the upper seat cushion, and a retaining frame; the drive assembly is used to drive the second gear to rotate around the circumference of the first gear;

[0012] The two ends of the retaining frame are respectively rotatably sleeved on the axis positions of the first gear and the second gear, so that the second gear and the first gear can maintain a continuous meshing state.

[0013] Preferably, the driving assembly includes a third gear rotatably mounted on the rear end of the lower seat cushion and a first driver driving the third gear to rotate, the third gear is coaxially arranged with the first gear, and the third gear is meshed with the second gear.

[0014] Preferably, the transmission ratio among the first gear, the second gear and the third gear is 1:1:1.

[0015] Preferably, the side portion of the backrest is rotatably connected to the upper end of the swing arm, and an electric angle adjuster is provided between the side portion of the backrest and the upper end of the swing arm.

[0016] Preferably, the lower end of the swing arm is rotatably arranged in the middle of the length direction of the base.

[0017] Preferably, a headrest that can be folded forward is installed on the upper end of the backrest, and a second driving mechanism is provided on the backrest for driving the headrest to rotate forward and backward relative to the upper end of the backrest.

[0018] Preferably, a shielding component extending downward is provided at the lower end of the back side of the backrest, and when the backrest is folded forward and flattened at the front end of the seat cushion assembly, the shielding component can cover the gap between the backrest and the seat cushion assembly.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. With the seat provided by the utility model that can be independently transformed into a bed, when the car seat is in a sitting state, the lower seat cushion and the upper seat cushion are arranged overlappingly. When the user needs to lie down to rest, the swing arm is rotated forward with the base as the rotation fulcrum, driving the swing arm and the backrest connected to the upper end to flip as a whole, so that the backrest is tilted forward and connected to the front end of the seat cushion assembly, and then the upper seat cushion is flipped backward to a horizontal state. At this time, the backrest, the lower seat cushion and the upper seat cushion are connected to form a bed.

[0021] 2. The deformable seat structure has the technical advantages of easy operation, high flatness after forming the bed, and good spatial adaptability. At the same time, the seat cushion adopts a double-layer structure design. By unfolding the upper seat cushion backward to a horizontal state, the support area of ​​the bed can be expanded, ensuring sufficient support length, so that it can adapt to users of different body shapes.

[0022] 3. The structural design of the flip drive mechanism has the advantages of high transmission efficiency and high motion precision, which improves the stability of the upper seat cushion rotation; secondly, during transmission, the vibration generated between the gears is small, which can reduce transmission noise and improve the user experience. In addition, each gear is small in size, light in weight, and has a strong load-bearing capacity, which is particularly suitable for use in cars with limited space.

[0023] 4. By realizing the one-button bed-forming function of the car seat, the operation steps can be reduced, and the intelligence and high-end feel of the entire vehicle can be improved. After the seat is transformed into a bed, its surface is simple and flat, and it has the advantage of a good overall appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of a car seat;

[0025] Figure 2 is another structural schematic diagram of a car seat;

[0026] Figure 3 This is a schematic diagram of the structure of the car seat in bed mode;

[0027] Figure 4 This is a schematic diagram of the internal frame structure of a car seat in a sitting position;

[0028] Figure 5 Schematic diagram of the structure when the lower seat cushion A2 and the upper seat cushion A3 overlap (the surface cover is hidden);

[0029] Figure 6 This is a rear view of the lower seat cushion A2 and the upper seat cushion A3 when they overlap (the surface cover is hidden);

[0030] Figure 7 This is a schematic diagram of the structure of the seat cushion assembly in bed mode (the surface cover is hidden);

[0031] Figure 8 This is a schematic diagram showing the structure of the lower seat cushion A2 after the support plate A5 is installed (the surface cover is hidden);

[0032] Figure 9 This is a schematic structural diagram showing another embodiment of the flip drive mechanism 4. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0034] like Figure 1 and 3 As shown, a chair capable of independently transforming into a bed comprises a base A1, a seat cushion assembly mounted on the base A1, and a backrest 1 disposed at the rear end of the seat cushion assembly. A swing arm 2 is provided on the side of the backrest 1, extending toward the base A1. The lower end of the swing arm 2 is pivotally connected to the base A1. Rotating the swing arm 2 forward relative to the base A1 allows the backrest 1 to tilt forward and connect to the front end of the seat cushion assembly. The seat cushion assembly comprises an upper seat cushion A3 and a lower seat cushion A2, arranged in an overlapping arrangement. The upper seat cushion A3 can be flipped backward relative to the lower seat cushion A2 to a horizontal position.

[0035] With this design, when the car seat is in the sitting position, the lower seat cushion A2 and the upper seat cushion A3 are arranged in an overlapping manner to ensure the normal use of the seat function. When the user needs to lie down to rest, the swing arm 2 is rotated forward with the base A1 as the fulcrum, which can drive the swing arm 2 and the backrest 1 at its upper end to flip as a whole, so that the backrest 1 is tilted forward and connected to the front end of the seat cushion assembly. Thereafter, the upper seat cushion A3 is flipped backward to a horizontal state. At this time, the backrest 1, the lower seat cushion A2 and the upper seat cushion A3 are connected to form a bed. Based on this, by manually or electrically flipping the backrest 1 and the upper seat cushion A3, the car seat can be independently transformed into a bed, which has the technical advantages of convenient operation, high flatness after forming a bed, and good spatial adaptability. At the same time, the seat cushion adopts a double-layer structure design. By unfolding the upper seat cushion A3 backward to a horizontal state, the support area of ​​the bed can be expanded, ensuring sufficient support length, so that it can accommodate users of different body shapes.

[0036] The following describes in detail an implementation structure for electrically controlling the forward tilting of the backrest 1 and the backward flipping of the upper seat cushion A3.

[0037] like Figure 4 As shown, the base A1 is provided with a first driving mechanism 3, which is used to drive the lower end of the swing arm 2 to rotate around the base A1. The first driving mechanism 3 drives the lower end of the swing arm 2 to rotate forward around the base A1, driving the upper end of the swing arm 2 to rotate forward with the lower end of the swing arm 2 as the rotation center, thereby driving the backrest 1 at the upper end of the swing arm 2 to fall forward to the front end of the seat cushion assembly (refer to Figure 3 ), realizing the electric control of the flipping of the backrest 1. Similarly, the first driving mechanism 3 drives the lower end of the swing arm 2 to rotate backward around the base A1, which can drive the backrest 1 to be retracted to the sitting position.

[0038] Re-attend Figure 1 and 4In this embodiment, there are two groups of swing arms 2, which are symmetrically arranged on both sides of the backrest 1. The upper ends of the two groups of swing arms 2 are respectively connected to the two sides of the lower end of the backrest 1, and the lower ends of the two groups of swing arms 2 are respectively rotatably connected to the two sides of the base A1. A first synchronization rod 8 is connected between the lower ends of the two groups of swing arms 2 and the base A1. The first drive mechanism 3 can adopt an angle-adjustable drive. The first drive mechanism 3 drives the first synchronization rod 8 to rotate, which can drive the lower ends of the two groups of swing arms 2 to rotate synchronously around the base A1. In this embodiment, both groups of swing arms 2 are constructed into a curved structure, and the lower ends of the swing arms 2 are rotatably arranged in the middle of the length direction of the base A1. Such a design can increase the swing amplitude of the swing arms 2, ensuring that when the swing arms 2 rotate forward, they can drive the lower end of the backrest 1 to rotate from the rear end of the seat cushion assembly to the front end of the seat cushion assembly.

[0039] Depend on Figure 4 It can be seen that the upper end of the swing arm 2 is rotatably connected to the side of the backrest 1. The connection structure of the two sets of swing arms 2 and the backrest 1 is the same and will not be repeated here. Electric recliners 9 are provided between the two sides of the lower end of the backrest 1 and the upper ends of the two sets of swing arms 2. The electric recliners 9 can drive the backrest 1 to rotate forward and backward around the upper ends of the swing arms 2, thereby adjusting the inclination angle of the backrest 1 when the seat is in the sitting state. When the seat is transformed into a bed, the backrest 1 can be adjusted to an upright state first, and then the swing arms 2 can be driven to rotate by the first drive mechanism 3, causing the backrest 1 to flip forward. Alternatively, the backrest 1 can be driven to flip forward first, and then the electric recliner 9 can be used to drive the backrest 1 to rotate relative to the upper ends of the swing arms 2 to ensure the flatness of the backrest 1 after it is connected to the seat cushion assembly.

[0040] Please refer to Figure 6 A flip drive mechanism 4 is provided between the upper seat cushion A3 and the lower seat cushion A2, and the flip drive mechanism 4 can drive the upper seat cushion A3 to flip backward relative to the lower seat cushion A2, so that when the seat is transformed into a bed, the upper seat cushion A3 can automatically flip backward to a horizontal state relative to the lower seat cushion A2, thereby expanding the support area of ​​the bed.

[0041] Further, refer to Figure 5 and 7The tilting drive mechanism 4 includes a drive assembly, a first gear 41 fixedly mounted on the rear end of the lower seat cushion A2, a second gear 42 rotatably mounted on the rear end of the upper seat cushion A3, and a retaining frame A4. The second gear 42 meshes with the first gear 41. The drive assembly is used to drive the second gear 42 to rotate around the circumference of the first gear 41, thereby driving the upper seat cushion A3 to rotate around the rear end of the lower seat cushion A2. The two ends of the retaining frame A4 are rotatably sleeved on the axis positions of the first gear 41 and the second gear 42, respectively, to ensure that the second gear 42 and the first gear 41 are continuously meshed. With this structural design, in the sitting mode, the second gear 42 is located above the first gear 41. Under the support of the retaining frame A4, the drive assembly drives the second gear 42 to rotate backward around the circumference of the first gear 41, which can drive the rear end of the upper seat cushion A3 to rotate backward relative to the rear end of the lower seat cushion A2, thereby allowing the upper seat cushion A3 to flip backward relative to the lower seat cushion A2 to a horizontal position. After flipping, the upper side of the upper seat cushion A3 is flush with the upper side of the lower seat cushion A2, ensuring the flatness of the upper and lower seat cushions A3 and A2 after the upper seat cushion A3 is unfolded. The gear transmission system can be used, and after shutdown, the meshing self-locking effect between the gears can be used to keep the upper seat cushion A3 stably horizontal.

[0042] Further, if Figure 5 and Figure 6 As shown, the drive assembly includes a third gear 43 rotatably mounted on the rear end of the lower seat cushion A2 and a first driver 44 that drives the third gear 43 to rotate. The third gear 43 is coaxially arranged with the first gear 41, and the third gear 43 meshes with the second gear 42. The first driver 44 drives the third gear 43 to rotate. Since the first gear 41 is fixedly mounted on the rear end of the lower seat cushion A2 and the second gear 42 is rotatably mounted on the rear end of the upper seat cushion A3, the second gear 42 meshes with both the first gear 41 and the third gear 43. Therefore, the rotation of the third gear 43 can drive the second gear 42 to rotate on its own, while also revolving around the axis of the first gear 41, which means that it can drive the upper seat cushion A3 to fall backward and flat relative to the lower seat cushion A2. This structural transmission has the advantages of high transmission efficiency and high motion precision, which improves the rotation stability of the upper seat cushion A3. Secondly, during transmission, the vibration generated between the gears is small, which can reduce transmission noise and enhance the user experience. In addition, each gear is small in size and light in weight, with strong load-bearing capacity, which is particularly suitable for use in cars with limited space.

[0043] Depend on Figure 6 and 7As can be seen, in this embodiment, there are two sets of first gears 41, second gears 42, third gears 43, and retaining bracket A4, each corresponding to one another. The two sets of first gears 41 are fixedly mounted on either side of the rear end of the lower seat cushion A2, the two sets of second gears 42 are rotatably mounted on either side of the rear end of the upper seat cushion A3, and the two sets of third gears 43 are rotatably mounted on either side of the rear end of the lower seat cushion A2. In the transmission mechanism on the same side, the third gear 43 is coaxially arranged with the first gear 41 and located inside the first gear 41. The retaining bracket A4 is located at the outer end, and both ends of the retaining bracket A4 are rotatably connected to the axis of the first gear 41 and the second gear 42 respectively via a pin a. Furthermore, a second synchronization rod 45 is connected between the third gears 43 on both sides of the lower seat cushion A2. The first driver 44 drives the second synchronization rod 45 to rotate, which can drive the two third gears 43 to rotate synchronously, thereby driving the second gears 42 on both sides of the upper seat cushion A3 to rotate while revolving around the corresponding first gear 41, thereby driving the upper seat cushion A3 to flip backward to a horizontal state.

[0044] In this embodiment, the transmission ratio between the first gear 41, the second gear 42 and the third gear 43 is 1:1:1. This design can ensure that the structure of the first gear 41, the second gear 42 and the third gear 43 is minimized. At the same time, after the upper seat cushion A3 and the lower seat cushion A2 are put on, the size of the gears can be perfectly integrated with the thickness of the upper seat cushion A3 and the lower seat cushion A2 (refer to Figure 1 and Figure 3 ) to enhance the overall aesthetics of the seat. Figure 3 A shielding cover A6 is provided at the position of the gear on the side of the seat cushion assembly, which can shield and protect the components.

[0045] In addition to the above embodiments, the flip drive mechanism 4 can also refer to Figure 9 The flip drive mechanism 4 includes a fixed gear 46 fixedly mounted at the rear end of the lower seat cushion A2, a rotating gear 47 rotatably mounted at the rear end of the upper seat cushion A3, a rotating arm 48 rotatably disposed on the side of the lower seat cushion A2, and a second driver 49 that drives the rotating arm 48 to rotate. The rotating gear 47 and the fixed gear 46 are capable of maintaining meshing transmission, the rotation center of the rotating arm 48 coincides with the centerline of the fixed gear 46, and the rotating arm 48 is rotatably engaged with the revolving gear 47. The second driver 49 drives the rotating arm 48 to rotate backward about its rotation center with the lower seat cushion A2, thereby driving the revolving gear 47 to rotate circumferentially about the fixed gear 46, thereby causing the upper seat cushion A3 to flip backward relative to the lower seat cushion A2 to a horizontal position.

[0046] Further, refer to Figure 9, the rotating arm 48 is arranged on the outside of the fixed gear 46, and the second driver 49 has an output shaft 491, which passes through the fixed gear 46 from the inside to the outside and is fixedly connected to the rotating arm 48 on the outside. The second driver 49 drives the output shaft 491 to rotate, which can drive the rotating arm 48 to rotate. In this embodiment, the number of fixed gears 46, revolving gears 47 and rotating arms 48 is provided in two groups, and they correspond one to one. The two groups of fixed gears 46 are respectively located on both sides of the rear end of the lower seat cushion A2, and the two groups of revolving gears 47 are respectively located on both sides of the rear end of the second layer structure 2. The two ends of the output shaft 491 pass through the fixed gears 46 on both sides and are fixedly connected to the two groups of rotating arms 48. The second driver 49 drives the output shaft 491 to rotate, which can drive the rotating arms 48 on both sides of the lower seat cushion A2 to rotate synchronously.

[0047] like Figure 1 and 3 As shown, a forward-folding headrest 5 is mounted on the upper end of the backrest 1. A second drive mechanism 6 is provided on the backrest 1, which drives the headrest 5 to rotate forward and backward relative to the upper end of the backrest 1. During the bed-forming process, the second drive mechanism 6 drives the headrest 5 to rotate forward 90 degrees. This allows the backrest 1 to fall flat to the front end of the lower seat cushion A2. The headrest 5 then contacts the vehicle floor and supports the front end of the backrest 1, improving the stability of the bed-forming structure.

[0048] In order to ensure the comfort and aesthetics of the seat, the front end of the seat cushion assembly usually has a certain curvature. When the backrest 1 is placed horizontally at the front end of the lower seat cushion A2, there is a gap between the rear end of the backrest 1 and the front end of the lower seat cushion A2. Figure 2 In this embodiment, a shielding member 7 extending downward is provided at the lower end of the back side of the backrest 1, and the shielding member 7 is arranged along the width direction of the backrest 1. Figure 3 When the backrest 1 is tilted forward and flattened on the front end of the seat cushion assembly, the shielding component 7 can cover the gap between the rear end of the backrest 1 and the front end of the lower seat cushion A2, thereby improving the overall aesthetics of the seat.

[0049] Furthermore, the shielding component 7 is a flexible covering component, the upper end of which is connected to the lower end of the backrest 1. With this design, when the backrest 1 moves, the shielding component 7 will not interfere with other components, ensuring the smoothness of the backrest 1 during rotation.

[0050] In this embodiment, a tilt adjustment mechanism is provided between the lower seat cushion A2 and the base A1. This mechanism can drive the lower seat cushion A2 to move relative to the base A1 to adjust the tilt angle of the lower seat cushion A2. With this in mind, the seat cushion assembly can be adjusted within a small range of tilt angles in a sitting position, meeting the user's comfort needs while sitting. After the backrest 1 rotates to the front end of the seat cushion assembly, the tilt adjustment mechanism can be used to adjust the tilt angle of the lower seat cushion A2 so that the upper side of the lower seat cushion A2 is flush with the upper side of the backrest 1, thereby ensuring the flatness of the surface after the backrest 1 and the lower seat cushion A2 are connected. Adjusting the tilt angle of the seat cushion is a prior art technique and will not be further described here.

[0051] Please refer to Figure 7 and 8 A support plate A5 is fixed to the lower seat cushion A2. This support plate A5 is made of elastic material. With this design, when the upper seat cushion A3 is flipped backward, the support plate A5 can ensure the flatness and comfort of the lower seat cushion A2. In addition, when the seat is in the sitting position, the upper seat cushion A3 overlaps the lower seat cushion A2, and the support plate A5 can provide elastic support, further improving the user's riding comfort.

[0052] Based on the above structural design, the car seat provided in this embodiment also features a one-touch bed-conversion function. Its operating principle is as follows: a first drive mechanism 3 drives the lower end of the swing arm 2 to rotate forward around the base A1, causing the backrest 1 at the upper end of the swing arm 2 to tilt forward and flatten toward the front end of the seat cushion assembly. Subsequently, a tilt drive mechanism 4 drives the upper seat cushion A3 to flip backward to a horizontal position relative to the lower seat cushion A2, thereby enabling the car seat to independently transform into a bed. This independent bed-conversion function reduces operational steps, enhances vehicle intelligence, and offers the technical advantages of improved spatial adaptability and a superior overall appearance.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. A chair capable of independently transforming into a bed, comprising a base (A1), a seat cushion assembly being provided on the base (A1), a backrest (1) being arranged at the rear end of the seat cushion assembly, and characterized in that: The side of the backrest (1) is provided with a swing arm (2) extending toward the base (A1); the lower end of the swing arm (2) is rotatably connected to the base (A1); the swing arm (2) rotates forward relative to the base (A1), so that the backrest (1) can be tilted forward and connected to the front end of the seat cushion assembly; the seat cushion assembly includes an upper seat cushion (A3) and a lower seat cushion (A2) arranged in an overlapping manner; the upper seat cushion (A3) can be flipped backward to a horizontal state relative to the lower seat cushion (A2).

2. The chair capable of independently transforming into a bed according to claim 1, characterized in that: The base (A1) is provided with a first driving mechanism (3) for driving the lower end of the swing arm (2) to rotate.

3. The chair capable of independently transforming into a bed according to claim 1 or 2, characterized in that: A turning drive mechanism (4) is provided between the upper seat cushion (A3) and the lower seat cushion (A2), and is used for driving the upper seat cushion (A3) to turn backward relative to the lower seat cushion (A2).

4. The chair capable of independently transforming into a bed according to claim 3, characterized in that: The tilting drive mechanism (4) comprises a drive assembly, a first gear (41) fixedly mounted on the rear end of the lower seat cushion (A2), a second gear (42) rotatably mounted on the rear end of the upper seat cushion (A3), and a retaining frame (A4); the drive assembly is used to drive the second gear (42) to rotate around the circumference of the first gear (41); The two ends of the retaining frame (A4) are respectively rotatably sleeved on the axis positions of the first gear (41) and the second gear (42), so that the second gear (42) and the first gear (41) can maintain a continuous meshing state.

5. The chair capable of independently transforming into a bed according to claim 4, characterized in that: The driving assembly comprises a third gear (43) rotatably mounted on the rear end of the lower seat cushion (A2) and a first driver (44) driving the third gear (43) to rotate. The third gear (43) is coaxially arranged with the first gear (41), and the third gear (43) is meshed with the second gear (42).

6. The chair capable of independently transforming into a bed according to claim 5, characterized in that: The transmission ratio among the first gear (41), the second gear (42) and the third gear (43) is 1:1:

1.

7. The chair capable of independently transforming into a bed according to claim 1, characterized in that: The side portion of the backrest (1) is rotatably connected to the upper end of the swing arm (2), and an electric angle adjuster (9) is provided between the side portion of the backrest (1) and the upper end of the swing arm (2).

8. The chair capable of independently transforming into a bed according to claim 1, characterized in that: The lower end of the swing arm (2) is rotatably arranged in the middle of the length direction of the base (A1).

9. The chair capable of independently transforming into a bed according to claim 1, characterized in that: A headrest (5) capable of folding forward is installed on the upper end of the backrest (1), and a second driving mechanism (6) is provided on the backrest (1) for driving the headrest (5) to rotate forward and backward relative to the upper end of the backrest (1).

10. The chair capable of independently transforming into a bed according to claim 1, characterized in that: A shielding component (7) extending downward is provided at the lower end of the back side of the backrest (1); when the backrest (1) is tilted forward and flattened at the front end of the seat cushion assembly, the shielding component (7) can cover the gap between the backrest (1) and the seat cushion assembly.

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