Transformable seat of automobile

Abstract

The utility model discloses an automobile deformation seat which comprises a base, a cushion assembly arranged on the base and a backrest assembly arranged at the rear end of the cushion assembly, the front end of the cushion assembly is rotationally connected with the base, and the backrest assembly is provided with a front backrest and a rear backrest which are arranged in an overlapped mode. The lower portion of the front backrest is connected to the base in a front-back overturning mode through a transmission mechanism, and the rear backrest can be overturned backwards to be in a horizontal state relative to the front backrest. The seat can be changed into a lying state from a sitting posture state, in the lying state, the cushion assembly is overturned forwards relative to the base to be in a horizontal state, the front backrest is overturned forwards under the driving action of the transmission mechanism to be flush with the rear end of the cushion assembly in a butt joint mode, and the rear backrest is overturned backwards to be in the horizontal state. The bed has the beneficial effects that the bed can be independently transformed into a bed and has the advantage of convenience and rapidness in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a deformable automobile seat. Background Art

[0002] At present, due to the increasing demand for long-distance travel and camping, many large SUVs have launched large bed modes so that users can lie down and rest during their travels.

[0003] However, in existing automotive applications, reclining and resting functions are typically achieved through the following methods: 1. Removing the headrests of the first-row seats, folding the backrests backward, and then joining the backrests with the second-row seats to form a bed; 2. Folding the third-row seatbacks forward and then rotating them together with the second-row seats to form a bed; 3. Folding the second and third-row seatbacks and joining them with the trunk floor to form a bed. All of these methods require at least two rows of seats to be joined together or simultaneously joined with the trunk floor to form a bed, which is inconvenient for users, cumbersome, and lacks space adaptability. Utility Model Content

[0004] In view of this, the utility model provides a transformable car seat, which can be independently transformed into a bed and has the advantage of being easy and quick to operate.

[0005] To achieve the above purpose, the technical solution of this utility model is as follows:

[0006] A transformable car seat comprises a base, a seat cushion assembly disposed on the base, and a backrest assembly disposed at the rear end of the seat cushion assembly. The key features of the seat cushion assembly are: the front end of the seat cushion assembly is rotatably connected to the base; the backrest assembly comprises a front backrest and a rear backrest that are arranged in an overlapping manner; the lower portion of the front backrest is connected to the base via a transmission mechanism so as to be tiltable forward and backward; and the rear backrest can be tilted rearward relative to the front backrest to a horizontal position.

[0007] The seat can be transformed from a sitting state to a lying state. In the lying state, the seat cushion assembly flips forward to a horizontal state relative to the base, and the front backrest flips forward to be flush with the rear end of the seat cushion assembly under the driving action of the transmission mechanism, and the rear backrest flips backward to a horizontal state.

[0008] With the above structure, in the sitting state, the front backrest and the rear backrest are arranged overlappingly. When the seat needs to be transformed into a bed, the front end of the seat cushion assembly is flipped forward 180 degrees around the base so that the bottom of the seat cushion assembly faces upward. Thereafter, under the driving action of the transmission mechanism, the overlapping front backrest and rear backrest are flipped forward as a whole, and the upper end of the front backrest is connected flush with the rear end of the flipped seat cushion assembly. Then the rear backrest is flipped backward relative to the front backrest to a horizontal state. At this time, the seat cushion assembly, the front backrest and the rear backrest are connected to form a bed.

[0009] Preferably, a front link and a rear link are provided between the seat cushion assembly and the base, the upper and lower ends of the front link are rotatably connected to the front end of the seat cushion assembly and the base respectively, and the upper and lower ends of the rear link are rotatably connected to the rear end of the seat cushion assembly and the base respectively, and the seat cushion assembly is provided with a locking component at a position corresponding to the rotational connection of the rear link, and the locking component is used to switch the seat cushion assembly between maintaining a rotational connection with the rear link and releasing the connection; a locking component is provided between the front link and the base, and the locking component is used to switch the front link between maintaining a rotational connection with the base and a fixed connection;

[0010] A driver is provided between the seat cushion assembly and the front connecting rod, and the driver is used for driving the seat cushion assembly to rotate relative to the front connecting rod.

[0011] Preferably, a retaining mechanism is provided on the base, and when the upper end of the rear connecting rod is disconnected from the seat cushion assembly, the retaining mechanism can keep the rear connecting rod locked relative to the base.

[0012] Preferably: the holding mechanism includes a first gear and a second gear rotatably mounted on the base, the lower end of the front connecting rod is provided with a first arc-shaped tooth portion meshing with the first gear, the lower end of the rear connecting rod is provided with a second arc-shaped tooth portion meshing with the second gear, the lower end of the first gear has a first extension portion extending downward, the lower end of the second gear has a second extension portion extending downward, a synchronization rod is provided between the lower parts of the first extension portion and the second extension portion, and the two ends of the synchronization rod are rotatably connected to the lower part of the first extension portion and the lower part of the second extension portion respectively.

[0013] Preferably, the locking assembly includes a locking bracket fixed on the base, a locking rod located above the locking bracket, and a zipper connected between the locking bracket and the locking rod. The lower end of the front connecting rod is rotatably connected to the locking bracket, the middle part of the locking rod is hinged to the front connecting rod, one end of the locking bracket is provided with a notch, and one end of the locking rod has a clamping portion adapted to the notch. The zipper is used to clamp the clamping portion in the notch, or to move the clamping portion upward away from the notch.

[0014] Preferably, there are two groups of front links and two groups of rear links, the two groups of front links are respectively arranged on both sides of the front end of the seat cushion assembly, and the two groups of rear links are respectively arranged on both sides of the rear end of the seat cushion assembly.

[0015] Preferably, the transmission mechanism includes a first connecting rod and a second connecting rod arranged on the side of the front backrest, the upper end of the first connecting rod is rotatably connected to the lower part of the front backrest, and the lower end is hinged to the base, the upper end of the second connecting rod is hinged to the lower end of the front backrest, and the lower end is hinged to the base, and an angle adjustment mechanism is provided between the front backrest and the upper end of the first connecting rod, which is used to drive the front backrest to rotate back and forth around the upper end of the first connecting rod.

[0016] Preferably, the first connecting rod and the second connecting rod are arranged from front to back, and in the height direction of the front backrest side, the rotation center of the upper end of the first connecting rod is located above the rotation center of the upper end of the second connecting rod.

[0017] Preferably, a flipping drive mechanism is provided between the front backrest and the rear backrest, for driving the rear backrest to flip backward relative to the front backrest.

[0018] Preferably, a headrest that can be folded forward is installed on the upper end of the front backrest, and a driving mechanism is provided on the front backrest for driving the headrest to rotate forward and backward relative to the upper end of the front backrest.

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

[0020] 1. With the transformable car seat provided by the present invention, when the seat is transformed from a sitting state to a lying state, the front end of the seat cushion assembly flips forward 180 degrees around the base so that the bottom of the seat cushion assembly faces upward. Thereafter, under the driving action of the transmission mechanism, the overlapping front backrest and rear backrest flip forward as a whole, and the upper end of the front backrest is connected flush with the rear end of the flipped seat cushion assembly. Then, the rear backrest is flipped backward relative to the front backrest to a horizontal state. At this time, the seat cushion assembly, the front backrest and the rear backrest are connected to form a bed, which has the advantages of convenient operation, a large area after the bed is formed, and high flatness, thereby improving the intelligence of the entire vehicle.

[0021] 2. The deformable car seat provided by the present invention forms a deformable four-bar mechanism by arranging a front link, a rear link, a locking assembly and a locking assembly. Such a structural design can achieve stable support and forward movement of the seat cushion assembly when the seat is in a sitting state, while also ensuring the stability and feasibility of the seat cushion assembly flipping forward. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a deformable car seat in a sitting position;

[0023] Figure 2 This is a structural diagram of a car seat transformed into a bed;

[0024] Figure 3 A schematic diagram showing the structure of the driving mechanism E for tilting the backrest assembly 3 forward and flat;

[0025] Figure 4 It is a right side view of the deformed car seat in the sitting position;

[0026] Figure 5 It is a cross-sectional view of the deformed car seat in the sitting position;

[0027] Figure 6This is the right side view of the car seat after it is transformed into a bed;

[0028] Figure 7 A structural diagram showing the connection between the seat cushion assembly 2 and the base 1 (the synchronization rod F3 is hidden);

[0029] Figure 8 It is a partial enlarged view of the lock component C;

[0030] Figure 9 It is a structural diagram of the automobile deformable seat in the sitting position after being covered with the upper cover;

[0031] Figure 10 It is a schematic diagram of the structure of the car's deformable seat after it is covered with the upper cover when it becomes a bed. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0033] like Figure 1 As shown, a deformable car seat comprises a base 1, a seat cushion assembly 2 arranged on the base 1 and a backrest assembly 3 arranged at the rear end of the seat cushion assembly 2, wherein the front end of the seat cushion assembly 2 is rotatably connected to the base 1. Figure 4 As can be seen, the backrest assembly 3 has a front backrest 31 and a rear backrest 32 arranged in an overlapping manner. The lower part of the front backrest 31 is connected to the base 1 through a transmission mechanism A so that it can be flipped forward and backward. The rear backrest 32 can be flipped backward to a horizontal position relative to the front backrest 31. The seat can be transformed from a sitting position to a lying position. In the sitting position, the seat cushion assembly 2 is supported at a nearly parallel angle on the base 1, and the backrest assembly 3 is supported at an angle at the rear end of the seat cushion assembly 2; refer to Figure 2 In the lying-flat state, the seat cushion assembly 2 flips forward relative to the base 1 to a horizontal state, and the front backrest 31 flips forward under the driving action of the transmission mechanism A to be flush with the rear end of the seat cushion assembly 2, and the rear backrest 32 flips backward relative to the front backrest 31 to a horizontal state. At this point, the seat cushion assembly 2, the front backrest 31 and the rear backrest 32 are connected to form a bed.

[0034] Based on the above structural design, reference Figure 9 and 10In the seated position, the front backrest 31 and rear backrest 32 of the transformable car seat overlap. When the user needs to lie down for a rest, the front end of the seat cushion assembly 2 flips forward 180 degrees around the base 1, so that the bottom of the seat cushion assembly 2 faces upward. Driven by the transmission mechanism A, the overlapping front backrest 31 and rear backrest 32 flip forward as a whole, with the upper end of the front backrest 31 aligned flush with the rear end of the flipped seat cushion assembly 2. The rear backrest 32 then flips rearward relative to the front backrest 31 to a horizontal position. At this point, the seat cushion assembly 2, front backrest 31, and rear backrest 32 are connected to form a bed. By manually or electrically flipping the seat cushion assembly 2, front backrest 31, and rear backrest 32, the seat can be independently transformed into a bed, offering the advantages of convenient operation and high flatness when the bed is formed, enhancing the overall vehicle intelligence. At the same time, the backrest adopts a double-layer structure design. By unfolding the rear backrest 32 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.

[0035] The following describes in detail an implementation structure for electrically controlling the transformation of a seat into a bed.

[0036] Please refer to Figure 1 and 4 A front link B1 and a rear link B2 are provided between the seat cushion assembly 2 and the base 1. The front link B1 has its upper and lower ends pivotally connected to the front end of the seat cushion assembly 2 and the base 1, respectively. The rear link B2 has its upper and lower ends pivotally connected to the rear end of the seat cushion assembly 2 and the base 1, respectively. A locking assembly C is provided on the seat cushion assembly 2 at a position corresponding to the pivotal connection of the rear link B2. This locking assembly C enables the seat cushion assembly 2 to switch between maintaining a pivotal connection with the rear link B2 and releasing the connection. A locking assembly D is provided between the front link B1 and the base 1. This locking assembly D enables the front link B1 to switch between maintaining a pivotal connection with the base 1 and a fixed connection. A driver 4 is provided between the seat cushion assembly 2 and the front link B1. Driver 4 is used to drive the seat cushion assembly 2 to rotate relative to the front link B1. In this embodiment, driver 4 is an electric recliner, which is controlled by a motor to drive the seat cushion assembly 2 to rotate relative to the front link B1.

[0037] Based on this, when the seat is in the sitting position, the latch assembly C maintains the rear end of the seat cushion assembly 2 in rotational connection with the upper end of the rear link B2, and the locking assembly D maintains the lower end of the front link B1 in rotational connection with the base 1. At this time, under the self-locking action of the actuator 4, the front link B1, base 1, rear link B2, and seat cushion assembly 2 form a stable four-bar linkage, stably supporting the seat cushion assembly 2 on the base 1. In addition, the seat cushion assembly 2 also has an independent forward movement function. In the sitting position, the actuator 4 drives the seat cushion assembly 2 to rotate relative to the front link B1, which drives the four-bar linkage to move, thereby achieving forward adjustment of the seat cushion assembly 2, freeing up space under the backrest assembly 3 to facilitate backrest angle adjustment and enhance user comfort. When the seat needs to be transformed into a bed, the locking assembly C releases the connection between the seat cushion assembly 2 and the rear link B2. Under the driving action of the driver 4, the rear end of the seat cushion assembly 2 can move upward away from the upper end of the rear link B2, so that the seat cushion assembly 2 can flip forward and flatten around the front link B1. At the same time, the locking assembly D fixes the lower end of the front link B1 with the base 1, ensuring that the front link B1 is in a firmly supported state, thereby providing strong support for the flipping of the seat cushion assembly 2 and ensuring the feasibility of forming a bed.

[0038] Further, refer to Figure 7 and 8 A latch d is fixedly mounted on the upper end of the rear link B2, extending along the width of the seat cushion assembly 2. In this embodiment, the latch assembly C utilizes a floor lock structure, comprising a base C3 fixedly mounted at the rear end of the seat cushion assembly 2. A lock hook C1 is rotatably mounted on the base C3, along with an unlocking component C2 that controls the rotation of the lock hook C1. In the locked state, the lock hook C1 engages the latch d, maintaining a rotational connection with the rear end of the seat cushion assembly 2. When unlocked, the unlocking component C2 pulls the lock hook C1 to rotate, releasing the latch d, allowing the rear end of the seat cushion assembly 2 to move upward and away from the latch d. Floor locks are a mature technology in automotive seat technology and will not be discussed in detail here.

[0039] like Figure 4 As shown, the base 1 is provided with a retaining mechanism F. When the upper end of the rear link B2 is disconnected from the seat cushion assembly 2, the retaining mechanism F keeps the rear link B2 locked relative to the base 1. With this design, after the latch assembly C is unlocked, the rear end of the seat cushion assembly 2 flips forward away from the rear link B2. The retaining mechanism F maintains the rear link B2 in its designed position. When the seat is returned to a sitting position, the seat cushion assembly 2 flips from front to back, and the rear end of the seat cushion assembly 2 returns to its connected position with the latch assembly C, ensuring that the latch assembly C accurately locks the latch pin d.

[0040] Further, combined with Figure 4 and Figure 7As shown, the holding mechanism F includes a first gear F1 and a second gear F2 which are rotatably mounted on the base 1 respectively, a first arcuate tooth portion a which meshes with the first gear F1 is provided at the lower end of the front link B1, and a second arcuate tooth portion b which meshes with the second gear F2 is provided at the lower end of the rear link B2, the first gear F1 has a first extension portion F11 which extends downward at the lower end, and the second gear F2 has a second extension portion F21 which extends downward at the lower end, a synchronization rod F3 is provided between the lower portions of the first extension portion F11 and the second extension portion F21, and both ends of the synchronization rod F3 are rotatably connected to the lower portions of the first extension portion F11 and the second extension portion F21 respectively. With this design, when the seat is transformed into a bed, the locking assembly D securely connects the lower end of the front link B1 to the base 1. Specifically, the first arcuate tooth portion a at the lower end of the front link B1 maintains fixed engagement with the first gear F1. Under the synchronous action of the synchronization rod F3, the second arcuate tooth portion b at the lower end of the rear link B2 also maintains fixed engagement with the second gear F2, thereby locking the rear link B2 relative to the base 1. On the other hand, when the seat is in the sitting position, the locking assembly D maintains a rotational connection between the lower end of the front link B1 and the base 1. The driver 4 drives the seat cushion assembly 2 to rotate about the front link B1, which in turn drives the lower end of the front link B1 to rotate. This rotation drives the first gear F1 to rotate about the base 1. Under the synchronous transmission action of the synchronization rod F3, this in turn drives the second gear F2 and the lower end of the rear link B2 to rotate, thereby enabling the seat cushion assembly 2 to move forward.

[0041] In the above-mentioned structural design, the functions of the retaining mechanism F are as follows: 1. After the locking assembly C is unlocked and the seat cushion assembly 2 flips forward, the retaining mechanism F can keep the rear link B2 stationary, ensuring that when the seat cushion assembly 2 flips back to a horizontal position again, the locking assembly C can accurately engage with the latch d. 2. In the sitting mode, when the driver 4 drives the seat cushion assembly 2 to adjust forward, the retaining mechanism F adopts the above-mentioned transmission structure, and will not affect the four-bar structure consisting of the front link B1, base 1, rear link B2, and seat cushion assembly 2, thereby ensuring that the seat cushion assembly 2 can achieve the fore-and-aft adjustment function. 3. Through the meshing self-locking effect of the gears, the stability of the fixed support of the front link B1 and the rear link B2 can be improved in the locked state; in the unlocked state, the gear transmission has the technical advantages of high transmission efficiency and high movement precision.

[0042] like Figure 4 As shown, in this embodiment, a torsion spring 8 is provided between the lower end of the rear link B2 and the base 1. The torsion spring 8 can eliminate the gap between the lower end of the rear link B2 and the base 1, thereby improving the stability of the overall structure.

[0043] Reference Figure 5The locking assembly D includes a locking bracket D11, a locking rod D12 located above the locking bracket D11, and a zipper D13 connected between the locking bracket D11 and the locking rod D12. The locking bracket D11 is fixedly assembled on the base 1, the lower end of the front link B1 is rotatably connected to the locking bracket D11, and the middle part of the locking rod D12 is hinged to the front link B1. A notch e is provided at one end of the locking bracket D11, and a downwardly extending clamping portion f is provided at one end of the locking rod D12, which is adapted to the notch e. ​​When the locking assembly D is locked, the clamping portion f of the locking rod D12 is clamped downward on the notch e. ​​At this time, the locking bracket D11, the locking rod D12 and the front link B1 form a stable triangular structure, and the front link B1 can be fixedly supported on the base 1. When unlocking, the controller can be used to control the zipper D13 to pull the lock rod D12 downward, and the clamping part f can move upward away from the notch e. ​​At this time, the lower end of the front connecting rod B1 can maintain a rotational connection with the base 1.

[0044] In this embodiment, the front link B1, the rear link B2, the latch d, the locking assembly C and the retaining mechanism F are each provided in two groups, and correspond one to one. The two groups of front links B1 are respectively located at the front ends of both sides of the seat cushion assembly 2, and the two groups of rear links B2 are respectively located at the rear ends of both sides of the seat cushion assembly 2. The locking assembly D is arranged on the inner side of one of the groups of front links B1.

[0045] Please refer to Figure 4 The transmission mechanism A includes a first link A1 and a second link A2 arranged on the side of the front backrest 31, wherein the upper end of the first link A1 is rotatably connected to the lower part of the front backrest 31, and the lower end is hinged to the base 1, the upper end of the second link A2 is hinged to the lower end of the front backrest 31, and the lower end of the second link A2 is hinged to the base 1, Figure 1 It can be seen that an angle adjustment mechanism 5 is provided between the front backrest 31 and the upper end of the first connecting rod A1. The angle adjustment mechanism 5 can drive the front backrest 31 to rotate forward and backward around the upper end of the first connecting rod A1. In the sitting state, the angle adjustment mechanism 5 drives the front backrest 31 to rotate in a small range to achieve the angle adjustment of the backrest. When the seat is turned into a bed, the angle adjustment mechanism 5 can drive the front backrest 31 to tilt forward around the upper end of the first connecting rod A1 (refer to Figure 6 ), at this time, the support of the two connecting rods can keep the front backrest 31 stably in a horizontal state.

[0046] Re-attend Figure 4 and 6In this embodiment, the first and second links A1 and A2 are arranged from front to back. The rotation center of the upper end of the first link A1 is located above the rotation center of the upper end of the second link A2 in the height direction of the side of the front backrest 31. To prevent interference between the movement of the first link A1 and the second link A2, the upper portion of the first link A1 is curved. With this in mind, the first link A1, base 1, second link A2, and front backrest 31 form a four-bar linkage. When the angle adjustment mechanism 5 drives the front backrest 31 to tilt forward around the upper end of the first link A1 and level it, the upper end of the second link A2 can pull the lower end of the front backrest 31 rearward. The basis for this design is that the design length of the seat cushion is usually smaller than the length of the backrest. When the seat cushion assembly 2 is flipped forward, the length of the space between the rear end of the seat cushion assembly 2 and the front backrest 31 is smaller than the length of the front backrest 31. Therefore, during the process of flipping the front backrest 31 forward, the upper end of the second connecting rod A2 pulls the lower end of the front backrest 31 backward to ensure that the flipping of the front backrest 31 is not interfered with, and the front backrest 31 can be docked at the rear end of the seat cushion assembly 2.

[0047] In this embodiment, there are two sets of first connecting rods A1 and second connecting rods A2 in one-to-one correspondence. The two sets of first connecting rods A1 are respectively located on both sides of the front backrest 31 in the width direction.

[0048] like Figure 2 As shown, a flipping drive mechanism E is provided between the front backrest 31 and the rear backrest 32, which can drive the rear backrest 32 to flip backward relative to the front backrest 31, so that when the seat is transformed into a bed, the rear backrest 32 can automatically flip backward to a horizontal state relative to the front backrest 31.

[0049] Furthermore, Figure 3 As shown, the tilting drive mechanism E includes a drive assembly, a fixed gear E1 fixedly mounted at the rear end of the front backrest 31, and a revolving gear E2 disposed at the rear end of the rear backrest 32. The rear end here refers to the orientation of the front and rear backrests 31 and 32 when they are tilted forward and flat. The revolving gear E2 is meshed with the fixed gear E1. The drive assembly is capable of driving the revolving gear E2 to rotate circumferentially around the fixed gear E1, thereby driving the rear backrest 32 to tilt backward around the rear end of the front backrest 31 to a horizontal position. After tilting, the upper side of the rear backrest 32 is flush with the upper side of the front backrest 31, ensuring the flatness of the surfaces of the rear backrest 32 and the front backrest 31 after the rear backrest 32 is unfolded.

[0050] For details, please refer to Figure 3The drive assembly includes a driver E4 and a retaining frame E3 rotatably connected between the rear ends of the front backrest 31 and the rear backrest 32, wherein the two ends of the retaining frame E3 are rotatably sleeved on the axial positions of the revolving gear E2 and the fixed gear E1 respectively. The driver E4 is used to drive the retaining frame E3 to rotate around the rotation center between it and the front backrest 31, thereby driving the revolving gear E2 to rotate circumferentially around the fixed gear E1, thereby enabling the rear backrest 32 to flip backward to a horizontal state relative to the front backrest 31.

[0051] In this embodiment, there are two sets of fixed gears E1, revolving gears E2 and retaining frames E3, and they correspond one to one. In the sitting state, the two sets of fixed gears E1 are respectively fixed on both sides of the lower end of the front backrest 31, and the two sets of revolving gears E2 are respectively rotatably set on both sides of the lower end of the rear backrest 32.

[0052] Please refer to Figure 4 and 6 A forward-folding headrest 6 is mounted on the upper end of the front backrest 31. A drive mechanism H is provided on the front backrest 31, which drives the headrest 6 to rotate forward and backward relative to the upper end of the front backrest 31. During the seat-bed transformation, the drive mechanism H drives the headrest 6 to fold forward 90 degrees, preventing interference between the front backrest 31 and the seat cushion assembly 2 during the forward tilting process. Furthermore, after the front backrest 31 is tilted forward and flat, the headrest 6 contacts the vehicle floor, providing strong support for the front end of the front backrest 31 and further enhancing the reliability and stability of the seat-bed structure.

[0053] Combine Figure 9 and 10 As shown, a shielding plate 7 is rotatably provided on the upper back side of the front backrest 31. When the front backrest 31 is tilted forward and connected with the seat cushion assembly 2, the shielding plate 7 can be rotated forward to cover the gap between the seat cushion assembly 2 and the front backrest 31, ensuring that the appearance of the bed surface is simple and flat, and improving the overall aesthetics of the seat.

[0054] 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 deformable car seat, comprising a base (1), a seat cushion assembly (2) disposed on the base (1), and a backrest assembly (3) arranged at the rear end of the seat cushion assembly (2), characterized in that: The front end of the seat cushion assembly (2) is rotatably connected to the base (1); the backrest assembly (3) comprises a front backrest (31) and a rear backrest (32) which are arranged in an overlapping manner; the lower portion of the front backrest (31) is connected to the base (1) via a transmission mechanism (A) so as to be flippable forward and backward; and the rear backrest (32) can be flipped backward to a horizontal state relative to the front backrest (31); The seat can be transformed from a sitting state to a lying state. In the lying state, the seat cushion assembly (2) flips forward relative to the base (1) to a horizontal state, the front backrest (31) flips forward under the driving action of the transmission mechanism (A) to be flush with the rear end of the seat cushion assembly (2), and the rear backrest (32) flips backward to a horizontal state.

2. The deformable car seat according to claim 1, characterized in that: A front connecting rod (B1) and a rear connecting rod (B2) are provided between the seat cushion assembly (2) and the base (1); the upper and lower ends of the front connecting rod (B1) are respectively rotatably connected to the front end of the seat cushion assembly (2) and the base (1); the upper and lower ends of the rear connecting rod (B2) are respectively rotatably connected to the rear end of the seat cushion assembly (2) and the base (1); the seat cushion assembly (2) is provided with a locking component (C) at a position corresponding to the rotatable connection of the rear connecting rod (B2); the locking component (C) is used to switch the seat cushion assembly (2) between maintaining a rotatable connection with the rear connecting rod (B2) and releasing the connection; a locking component (D) is provided between the front connecting rod (B1) and the base (1); the locking component (D) is used to switch the front connecting rod (B1) between maintaining a rotatable connection with the base (1) and a fixed connection; A driver (4) is provided between the seat cushion assembly (2) and the front connecting rod (B1), and the driver (4) is used to drive the seat cushion assembly (2) to rotate relative to the front connecting rod (B1).

3. The deformable car seat according to claim 2, characterized in that: The base (1) is provided with a retaining mechanism (F), and when the upper end of the rear connecting rod (B2) is disconnected from the seat cushion assembly (2), the retaining mechanism (F) can keep the rear connecting rod (B2) locked relative to the base (1).

4. The deformable car seat according to claim 3, characterized in that: The holding mechanism (F) includes a first gear (F1) and a second gear (F2) rotatably mounted on the base (1); the lower end of the front link (B1) is provided with a first arc-shaped tooth portion (a) meshing with the first gear (F1); the lower end of the rear link (B2) is provided with a second arc-shaped tooth portion (b) meshing with the second gear (F2); the lower end of the first gear (F1) has a first extension portion (F11) extending downward; the lower end of the second gear (F2) has a second extension portion (F21) extending downward; a synchronization rod (F3) is provided between the lower parts of the first extension portion (F11) and the second extension portion (F21); and the two ends of the synchronization rod (F3) are rotatably connected to the lower parts of the first extension portion (F11) and the lower parts of the second extension portion (F21), respectively.

5. The deformable car seat according to claim 2, characterized in that: The locking assembly (D) includes a locking bracket (D11) fixed on the base (1), a locking rod (D12) located above the locking bracket (D11), and a zipper (D13) connected between the locking bracket (D11) and the locking rod (D12); the lower end of the front connecting rod (B1) is rotatably connected to the locking bracket (D11); the middle part of the locking rod (D12) is hinged to the front connecting rod (B1); one end of the locking bracket (D11) is provided with a notch (e); one end of the locking rod (D12) has a clamping portion (f) adapted to the notch (e); the zipper (D13) is used to clamp the clamping portion (f) in the notch (e) or to move the clamping portion (f) upward away from the notch (e).

6. The deformable car seat according to claim 2, characterized in that: The front connecting rods (B1) and the rear connecting rods (B2) are each provided in two groups. The two groups of the front connecting rods (B1) are respectively arranged on both sides of the front end of the seat cushion assembly (2), and the two groups of the rear connecting rods (B2) are respectively arranged on both sides of the rear end of the seat cushion assembly (2).

7. The deformable car seat according to claim 1, characterized in that: The transmission mechanism (A) includes a first connecting rod (A1) and a second connecting rod (A2) arranged on the side of the front backrest (31), the upper end of the first connecting rod (A1) is rotatably connected to the lower part of the front backrest (31), and the lower end is hinged to the base (1), the upper end of the second connecting rod (A2) is hinged to the lower end of the front backrest (31), and the lower end is hinged to the base (1), and an angle adjustment mechanism (5) is provided between the front backrest (31) and the upper end of the first connecting rod (A1), which is used to drive the front backrest (31) to rotate forward and backward around the upper end of the first connecting rod (A1).

8. The deformable car seat according to claim 7, characterized in that: The first connecting rod (A1) and the second connecting rod (A2) are arranged from front to back. In the height direction of the side of the front backrest (31), the rotation center of the upper end of the first connecting rod (A1) is located above the rotation center of the upper end of the second connecting rod (A2).

9. The deformable car seat according to claim 1, characterized in that: A turning drive mechanism (E) is provided between the front backrest (31) and the rear backrest (32), which is used to drive the rear backrest (32) to turn backward relative to the front backrest (31).

10. The deformable car seat according to claim 1, characterized in that: A headrest (6) capable of being folded forward is installed on the upper end of the front backrest (31), and a driving mechanism (H) is provided on the front backrest (31) for driving the headrest (6) to rotate forward and backward relative to the upper end of the front backrest (31).

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