Seat capable of being transformed into bed

Abstract

The utility model discloses a seat capable of being transformed into a bed, which comprises a seat cushion, a backrest rotatably mounted at the rear end of the seat cushion, a leg support assembled at the front end in a folding and unfolding manner, a headrest arranged at the top of the backrest, side wing accommodating grooves formed in two ends of the front side of the backrest, side wings mounted in the side wing accommodating grooves in an overturning manner, and the supporting angles of the side wings can be adjusted in a rotating manner. Armrests are rotationally arranged on the left side and the right side of the backrest and can be folded at the side parts of the backrest; and when the seat is in a bed-forming state, the backrest is backward and flat relative to the seat cushion, the leg support is forward unfolded relative to the seat cushion, the side wings are accommodated in the side wing accommodating grooves, and the armrests are accommodated at the side parts of the backrest. The automobile seat has the advantages that the automobile seat can be independently transformed into a bed by folding all the functional assemblies, the automobile seat does not need to be spliced with other seats to form the bed, the whole operation is very convenient, and meanwhile the armrests, the side wings and the leg supports integrated on the automobile seat improve the comfort experience of passengers in a seat mode.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically to a seat with a variable-formation bed. Background Technology

[0002] To meet the needs of car seats in different scenarios, car seats are equipped with multiple modes, such as the car's zero-gravity mode, which allows the occupant to switch from a sitting position to a near-reclining position by tilting the seat back backward and flipping the leg rest forward, thereby reducing the discomfort caused by long-term sitting.

[0003] With the increasing demand for long-distance travel and camping, zero-gravity mode can no longer meet the needs of passengers, and seat-to-bed technology has emerged. In existing technologies, seat-to-bed technology is mostly achieved by removing the headrests of the front seats, flipping the seat backs backward to a horizontal position, and splicing them with the rear seat cushions to form a bed, thereby enabling passengers to lie flat. The entire transformation process requires manual operation by the passengers and must be combined and spliced ​​with the rear seats to be completed, which is very inconvenient. Utility Model Content

[0004] In view of this, the present invention provides a seat that can be converted into a bed, which can be converted into a bed more conveniently to meet the comfort needs of passengers.

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

[0006] A convertible bed chair includes a seat cushion, a backrest rotatably mounted at the rear end of the seat cushion, and a leg rest foldable and unfoldable at the front end. A headrest is provided at the top of the backrest. The chair is characterized by: side wing storage slots at both ends of the front side of the backrest, side wings being mounted by flipping within the storage slots, and the side wings being able to adjust their support angle by rotation; armrests rotatably mounted on both sides of the backrest, and the armrests being able to be folded into the sides of the backrest; the chair has a sitting position and a bed position. In the bed position, the backrest is folded back relative to the seat cushion, the leg rest is unfolded forward relative to the seat cushion, the side wings are folded into the side wing storage slots, and the armrests are folded into the sides of the backrest.

[0007] With the above structure, the car seat can be transformed into a bed by folding down the various functional components, without having to be combined with other seats to form a bed. The overall operation is very convenient. At the same time, the armrests, side wings and leg rests integrated into the car seat increase the comfort experience of the occupants in the seat mode.

[0008] Preferably, the armrest is rotatably mounted on the side of the backrest via a first drive assembly. The first drive assembly includes a first motor and a transmission gear powered by the first motor. The armrest has a horizontally extending transmission part, which passes through the transmission gear. With this structure, the armrest can be rotated back and forth by the first motor driving the transmission gear, thereby achieving the function of adjusting the armrest's angle.

[0009] Preferably, the backrest side is provided with an armrest storage slot, and the backrest is provided with a folding device. The folding device is used to drive the armrest to move along the width direction of the backrest so that the armrest can be stored in the armrest storage slot. With the above structure, the armrest can be folded into the armrest storage slot after the seat is transformed into a bed, making the overall structure more compact.

[0010] Preferably, the transmission gear has a mounting through hole, and the transmission part is axially slidably inserted into the mounting through hole. The transmission part has a key block, which enables the transmission part to rotate synchronously with the transmission gear. With the above structure, the key block enables the handrail to rotate synchronously with the transmission gear, and the axially slidable installation of the transmission part in the mounting through hole also enables the handrail to fold inward into the handrail storage groove.

[0011] Preferably, the folding device includes a third motor and a lead screw driven by the third motor. The transmission part is a hollow tubular structure, with the lead screw passing through it. One end of the transmission part has a threaded sleeve that rotatably engages with it. The lead screw is threadedly fitted into the threaded sleeve. The transmission part has an arc-shaped hole arranged circumferentially. The threaded sleeve has an outwardly protruding limiting protrusion that passes through the arc-shaped hole. The backrest has a limiting bracket with a limiting groove extending along the width of the backrest. The limiting protrusion is slidably disposed within the limiting groove. With this structure, the limiting groove design ensures that the rotation of the lead screw cannot drive the threaded sleeve to rotate, but only forces the threaded sleeve to move back and forth within the limiting groove, thus achieving the folding function of the armrest. The arc-shaped hole limits the angle of rotation of the armrest and avoids motion interference with the folding device.

[0012] Preferably, the side wing is rotatably mounted via a second drive mechanism, the second drive mechanism including a second motor and a rotating rod powered by the second motor, the side wing being fixedly mounted on the rotating rod. With this structure, the rotation of the side wing can be electrically controlled.

[0013] Preferably, a sector-shaped block is fixedly mounted on the top of the rotating rod, and an arc-shaped tooth segment is provided on the arc-shaped surface of the sector-shaped block. A worm gear is connected to the output end of the second motor, and the worm gear meshes with the arc-shaped tooth segment. With the above structure, the rotation of the side wing can be achieved, and the design of the sector-shaped block effectively limits the rotation angle of the side wing.

[0014] Preferably, a linkage mechanism is provided between the seat cushion and the backrest. When the backrest is flipped backward, the linkage mechanism can force the rear end of the seat cushion to lift upward. This structure ensures a smoother surface when the seat is converted into a bed, thereby increasing passenger comfort.

[0015] Preferably, the linkage mechanism includes a first link, a second link, a third link, a fourth link, and a fifth link hinged sequentially. The end of the first link furthest from the second link is fixedly disposed on the side of the backrest. A rotating seat is rotatably disposed on the side of the seat cushion. The third link is hinged to the rotating seat. The fifth link is arranged along the front-rear direction of the seat cushion, with its front end hinged to the seat cushion and the fourth link hinged to its rear end. With this structure, when the backrest is flipped backward, the linkage mechanism can lift the rear end of the fifth link backward, thereby lifting the rear end of the seat cushion upward to ensure a flatter surface and increase overall occupant comfort.

[0016] Preferably, the top of the backrest is provided with a flipping device, which includes a fourth motor and a rotating block powered by the fourth motor, and the headrest is fixedly mounted on the rotating block. With this structure, the headrest can be folded backward relative to the backrest.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The convertible bed seat provided by this utility model can be transformed into a bed independently by flipping and folding various functional components, without having to be spliced ​​with other seats to form a bed. The overall operation is very convenient. At the same time, the armrests, side wings and leg rests integrated into the car seat increase the passenger's comfortable riding experience in the seat mode.

[0019] 2. The side wings, armrests, headrests, and leg rests greatly enhance the comfort of the seat, providing passengers with a more comfortable riding experience.

[0020] 3. The linkage mechanism ensures that when the seat is transformed into a bed, the rear end of the seat cushion can be automatically raised to make the entire bed surface flatter, thereby ensuring overall comfort. Attached Figure Description

[0021] Figure 1A three-dimensional structural diagram of a variable-formability bed seat;

[0022] Figure 2 A three-dimensional structural diagram of the seat after it has been transformed into a bed;

[0023] Figure 3 To show the structural diagram of handrail 6;

[0024] Figure 4 To show a partially enlarged schematic diagram of the control system of handrail 6 (limiting bracket 19 has been hidden);

[0025] Figure 5 A connection diagram showing the usage status of armrest 6;

[0026] Figure 6 A schematic diagram of the connection structure between the limiting bracket 19 and the threaded sleeve 11 (the transmission part 6a is hidden);

[0027] Figure 7 To illustrate the structural diagram of the second drive mechanism;

[0028] Figure 8 To illustrate the structural diagram of linkage mechanism 16 in seat mode;

[0029] Figure 9 This is a schematic diagram of the linkage mechanism 16 after the seat transforms into a bed;

[0030] Figure 10 This is a schematic diagram illustrating the structure of the flipping device. Detailed Implementation

[0031] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, a convertible bed-like chair includes a seat cushion 1, a backrest 2 rotatably mounted at the rear end of the seat cushion 1, a leg rest 3 foldably and unfoldably mounted at the front end of the seat cushion 1, a headrest 4 mounted on the top of the backrest 2, side wing storage grooves 2a formed at both ends of the front side of the backrest 2, side wings 5 ​​rotatably mounted within the side wing storage grooves 2a, the side wings 5 ​​being able to adjust their support angle by rotation, and armrests 6 rotatably mounted on both the left and right sides of the backrest 2, the armrests 6 being able to be stored in the sides of the backrest 2. In this embodiment, the chair has a sitting posture and a bed-like posture. In the bed-like posture, the backrest 2 is folded back relative to the seat cushion 1, the leg rest 3 is unfolded forward relative to the seat cushion 1, the side wings 5 ​​are stored in the side wing storage grooves 2a, and the armrests 6 are stored in the sides of the backrest 2.

[0033] With this design, when the various functional components are folded and flipped, the car seat can be transformed into a bed independently without having to be combined with other seats to form a bed. The overall operation is very convenient. At the same time, the leg rest 3, side wings 5 ​​and armrests integrated on the car seat further enhance the comfort experience of the occupants in the seat mode.

[0034] Specifically, such as Figure 3 and Figure 4 As shown, the armrest 6 is rotatably mounted on the side of the backrest 2 via a first drive assembly. The first drive assembly includes a first motor 7 and a transmission gear 8 that is powered by the first motor 7. The armrest 6 has a horizontally extending transmission part 6a that passes through the transmission gear 8. When the first motor 7 is running, it can drive the transmission gear 8 to rotate, thereby driving the armrest 6 to perform a back-and-forth flipping motion.

[0035] like Figure 3 As shown, the backrest 2 has an armrest storage groove 2b formed on its side. A folding device is provided inside the backrest 2. When the armrest 6 is rotated to a vertical position, the folding device can fold the armrest 6 along the width direction of the backrest 2 until the armrest 6 is stored in the armrest storage groove 2b. This design allows the armrest 6 to be folded in the armrest storage groove 2b after the seat is transformed into a bed, thus making the overall structure more compact.

[0036] like Figure 6 As shown, in this embodiment, a mounting through hole 8a is formed in the middle of the transmission gear 8. The transmission part 6a is axially slidably inserted into the mounting through hole 8a, thus ensuring that the folding device can drive the armrest 6 to fold inward into the armrest storage groove 2b. A key block 6b is also fixedly installed on the transmission part 6a, and the key block 6b is also inserted into the mounting through hole 8a. The key block 6b ensures that the entire armrest 6 can rotate synchronously with the transmission gear 8.

[0037] like Figures 4 to 6 As shown, the folding device includes a third motor 9 and a lead screw 10 driven by the third motor 9. The transmission part 6a is a hollow tubular structure, and the lead screw 10 passes through the inside of the transmission part 6a. A threaded sleeve 11 that rotates with the transmission part 6a is installed at the end of the transmission part 6a away from the armrest 6. The lead screw 10 is threadedly fitted into the threaded sleeve 11. In this embodiment, an arc-shaped hole 6a1 arranged in the circumferential direction is formed on the transmission part 6a, and an outwardly protruding limiting protrusion 11a is formed on the threaded sleeve 11. The limiting protrusion 11a passes through the arc-shaped hole 6a1. In addition, a limiting bracket 19 is fixedly installed on the backrest 2. A limiting groove 19a extending in the width direction of the backrest 2 is formed on the limiting bracket 19. The portion of the limiting protrusion 11a that protrudes beyond the arc-shaped hole 6a1 is slidably installed in the limiting groove 19a.

[0038] Based on the above design, when the seat is converted into a bed, the first motor 7 drives the transmission gear 8 to rotate. Through the key block 6b, the armrest 6 can rotate backward synchronously. Since the threaded sleeve 11 is rotatably installed at the end of the transmission part 6a, there will be no motion interference between the first drive assembly and the folding device. The cooperation between the arc hole 6a1 and the limiting protrusion 11a can limit the rotation angle of the armrest 6. When the armrest 6 rotates to the vertical position, the third motor 9 runs and drives the lead screw 10 to rotate. Since the threaded sleeve 11 is restricted by the limiting groove 19a and cannot rotate with it, the threaded sleeve 11 can move on the lead screw, thereby causing the armrest 6 to fold inward until it is stored inside the armrest storage groove 2b.

[0039] In this embodiment, each handrail 6 is equipped with a set of first drive components. This design can meet the needs of passengers for various support angles of the handrail 6. In addition, the two handrails 6 share a set of folding device. In order to facilitate the synchronous unfolding and folding of the two handrails 6, the thread openings of the two threaded sleeves 11 should be completely opposite, or the thread openings of the two lead screws 10 should be completely opposite.

[0040] like Figure 5 As shown, a limiting block 6c is also formed on the transmission part 6a. When the handrail 6 is folded inward to a certain distance, the limiting block 6c can abut against the transmission gear 8, thereby limiting the inward folding distance of the handrail 6.

[0041] like Figure 7 As shown, the side wing 5 is rotatably mounted via a second drive mechanism. The second drive mechanism includes a second motor 12 and a rotating rod 13 that is powered by the second motor 12. The side wing 5 is fixedly mounted on the rotating rod 13. The rotation of the rotating rod 13 is driven by the second motor 12, which in turn drives the side wing 5 to rotate.

[0042] Specifically, such as Figure 7 As shown, a sector block 14 is fixedly installed on the top of the rotating rod 13. An arc-shaped tooth segment 14a is formed on the arc surface of the sector block 14. The output end of the second motor 12 is connected to a worm gear 15. The worm gear 15 meshes with the arc-shaped tooth segment 14a. This design can stably control the rotation of the side wing 5. At the same time, the design of the sector block 14 can limit the rotation angle of the side wing 5.

[0043] In this embodiment, each of the two sets of side wings 5 ​​is equipped with a second drive mechanism. This design allows for individual control of the rotation of each side wing 5, thereby meeting the needs of occupants of different body sizes for the side wings 5.

[0044] like Figure 8 and Figure 9As shown, a linkage mechanism 16 is provided between the seat cushion 1 and the backrest 2. The rear end of the seat cushion 1 of a car seat is usually slightly recessed to ensure the comfort of the passenger. When the backrest 2 is flipped back, the linkage mechanism 16 can force the rear end of the seat cushion 1 to lift up, thereby ensuring that the surface of the car seat is flatter when it is switched into a bed, thus ensuring that the passenger is more comfortable when lying down.

[0045] Specifically, the linkage mechanism 16 includes a first link 16a, a second link 16b, a third link 16c, a fourth link 16d, and a fifth link 16e that are hinged in sequence. The end of the first link 16a away from the second link 16b is fixedly installed on the lower side of the backrest 2. A rotating seat 1a is also rotatably installed on the side of the seat cushion 1. The third link 16c is hinged to the rotating seat 1a. The front end of the fifth link 16e is hinged to the seat cushion 1. The fourth link 16d is hinged to the rear end of the fifth link 16e.

[0046] Combination Figure 8 and Figure 9 When the backrest 2 rotates backward, the first link 16a can drive the second link 16b to move upward as a whole, and then the second link 16b drives the third link 16c to move upward as a whole. The third link 16c then drives the fourth link 16d to move upward as a whole, which finally causes the rear end of the fifth link 16e to rise upward as a whole, thereby raising the rear end of the seat cushion 1.

[0047] like Figure 10 As shown, a flipping device is provided at the top of the backrest 2. The flipping device includes a fourth motor 17 and a rotating block 18 that is powered by the fourth motor 17. The headrest 4 is fixedly installed on the top of the rotating block 18. Driving the fourth motor 17 will drive the rotating block 18 to rotate, thereby causing the headrest 4 to flip back and forth. With this design, when the seat is converted into a bed, driving the headrest 4 to flip backward can avoid movement interference with the rear car seats.

[0048] Since car seat leg rests are a mature existing technology, they will not be described in detail in this embodiment.

[0049] In this embodiment, the first motor 7, the second motor 12, the third motor 9, the fourth motor 17, and the leg rest 3 are all electrically connected through the controller. In actual use, only one button is needed to start the function and switch between the seat mode and the bed mode.

[0050] Based on the above structure, the specific steps for transforming a car seat into a bed are as follows:

[0051] First, the second motor 12 operates and drives the side wings 5 ​​to unfold outward so that the side wings 5 ​​fold into the side wing storage slot 2a, thereby making the surface of the backrest 2 flat. Then, the first motor 7 drives the transmission gear 8 to rotate, thereby driving the armrest 6 to flip backward until it reaches a vertical position. Then, the third motor 9 drives the lead screw 10 to rotate, causing the armrest 6 to move towards the center of the backrest 2 until the armrest 6 is stored inside the armrest storage slot 2b. Finally, the backrest 2 flips backward to a horizontal position to complete the deformation. In addition, while the backrest 2 flips backward, the leg rest 3 can simultaneously flip forward and unfold. The fourth motor 17 can simultaneously drive the rotating block 18 to rotate, causing the headrest 4 to flip backward by 90°. The linkage mechanism 16 can simultaneously control the rear end of the seat cushion 1 to lift upward so that the seat cushion 1 is in a horizontal position.

[0052] The entire transformation process is very convenient and quick, and the seat can be converted into a bed. The additional side wings 5 ​​and armrests 6 further enhance the comfort of the seat, ensuring a comfortable driving experience for the occupants.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A variable formation bed chair, comprising a seat cushion (1), a backrest (2) is rotatably mounted at the rear end of the seat cushion (1), a leg rest (3) is foldably assembled at the front end of the seat cushion (1), a headrest (4) is arranged at the top of the backrest (2), characterized in that: The backrest (2) is provided with a side wing storage groove (2a) at both ends of the front side, a side wing (5) is reversely installed in the side wing storage groove (2a), the side wing (5) can adjust the supporting angle in a rotating manner, and an armrest (6) is rotatably arranged at the left and right sides of the backrest (2), the armrest (6) can be stored in the side of the backrest (2). The seat has a sitting state and a bed state, in the bed state, the backrest (2) is flatly backward relative to the cushion (1), the leg rest (3) is unfolded forward relative to the cushion (1), the side wing (5) is stored in the side wing storage groove (2a), and the armrest (6) is stored in the side of the backrest (2).

2. The variable formation seat bed of claim 1, wherein: The armrest (6) is rotatably installed on the side of the backrest (2) through a first driving assembly, the first driving assembly comprises a first motor (7) and a transmission gear (8) in power connection with the first motor (7), and the armrest (6) has a horizontal transmission part (6a) penetrating in the transmission gear (8).

3. The variable formation seat bed of claim 2, wherein: The side of the backrest (2) is provided with an armrest storage groove (2b), and the backrest (2) is provided with a folding device, the folding device is used for driving the armrest to move along the width direction of the backrest, so that the armrest (6) can be stored in the armrest storage groove (2b).

4. The variable formation seat bed of claim 3, wherein: The transmission gear (8) is provided with a mounting through hole (8a), the transmission part (6a) is axially slidably penetrated in the mounting through hole (8a), the transmission part (6a) is provided with a key block (6b), and the key block (6b) is used for enabling the transmission part (6a) to rotate synchronously with the transmission gear (8).

5. The variable formation seat bed of claim 4, wherein: The folding device comprises a third motor (9) and a lead screw (10) rotatably driven by the third motor (9), the transmission part (6a) is a hollow tubular structure, the lead screw (10) penetrates in the transmission part (6a), one end of the transmission part (6a) is provided with a threaded sleeve (11) in rotational cooperation with the transmission part (6a), the lead screw (10) is threadedly sleeved in the threaded sleeve (11), the transmission part (6a) has an arc-shaped hole (6a1) arranged in the circumferential direction, the threaded sleeve (11) is provided with a limiting protrusion (11a) protruding outward, and the limiting protrusion (11a) penetrates in the arc-shaped hole (6a1). The backrest (2) is provided with a limiting support (19), the limiting support (19) has a limiting groove (19a) extending along the width direction of the backrest (2), and the limiting protrusion (11a) is slidably arranged in the limiting groove (19a).

6. The variable formation seat bed of claim 1, wherein: The side wing (5) is rotatably installed through a second driving mechanism, the second driving mechanism comprises a second motor (12) and a rotating rod (13) in power connection with the second motor (12), and the side wing (5) is fixedly sleeved on the rotating rod (13).

7. The variable formation seat bed of claim 6, wherein: The top of the rotating rod (13) is fixedly provided with a sector block (14), an arc-shaped tooth segment (14a) is arranged on the arc-shaped surface of the sector block (14), the output end of the second motor (12) is connected with a worm (15), and the worm (15) and the arc-shaped tooth segment (14a) are mutually engaged.

8. The variable formation seat bed of claim 1, wherein: A connecting rod mechanism (16) is arranged between the seat cushion (1) and the backrest (2), when the backrest (2) is flipped back, the connecting rod mechanism (16) can force the rear end of the seat cushion (1) to be lifted upward.

9. The variable formation seat bed of claim 8, wherein: The connecting rod mechanism (16) comprises a first connecting rod (16a), a second connecting rod (16b), a third connecting rod (16c), a fourth connecting rod (16d) and a fifth connecting rod (16e) which are sequentially hinged, one end of the first connecting rod (16a) away from the second connecting rod (16b) is fixedly arranged on the side of the backrest (2), a rotating seat (1a) is rotatably arranged on the side of the seat cushion (1), the third connecting rod (16c) is hinged on the rotating seat (1a), the fifth connecting rod (16e) is arranged along the front-back direction of the seat cushion (1), the front end of the fifth connecting rod (16e) is hinged on the seat cushion (1), and the fourth connecting rod (16d) is hinged at the rear end position of the fifth connecting rod (16e).

10. The variable formation seat bed of claim 1, wherein: The top of the backrest (2) is provided with a flipping device, the flipping device comprises a fourth motor (17) and a rotating block (18) which is in power connection with the fourth motor (17), and the headrest (4) is fixedly arranged on the rotating block (18).

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