Automobile seat capable of being transformed into bed

Abstract

The invention discloses an automobile seat capable of being transformed into a bed, which comprises a cushion, a backrest is rotatably mounted at the rear end of the cushion, a leg support is assembled at the front end of the cushion in a folding and unfolding manner, a headrest is arranged at the top of the backrest, side wing accommodating grooves are formed in two ends of the front side of the backrest, and side wings are mounted in the side wing accommodating grooves in an overturning manner; the supporting angles of the side wings can be adjusted in a rotating mode, and armrests are rotationally arranged on the left side and the right side of the backrest and can be stored on the side portions 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 by folding all the functional assemblies, the automobile seat can be independently transformed into a bed and does not need to be spliced with other seats to form the bed, overall operation is quite 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] The invention relates to the technical field of automobile seats, and in particular to an automobile seat which can be transformed into a bed. Background Art

[0002] In order to meet the needs of car seats in different scenarios, car seats are set with multiple modes, such as the car's zero-gravity mode, which allows passengers to switch from a sitting position to a nearly lying position by tilting the seat back and flipping the leg rest forward, so as to reduce the discomfort caused by long-term riding.

[0003] With the increasing demand for long-distance travel and camping, the zero-gravity mode can no longer meet the needs of passengers, and seat-to-bed technology has emerged. In the existing technology, seats are mostly transformed into beds by removing the front seat headrests, flipping the seat backs backwards to a horizontal position and splicing them with the rear seat cushions to form a bed, so that the passengers can lie flat. The entire deformation process requires manual operation by the passengers and needs to be combined and spliced ​​with the rear seats to complete, which is very inconvenient. Summary of the invention

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

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] A car seat that can be transformed into a bed, comprising a seat cushion, a backrest rotatably mounted at the rear end of the seat cushion, a leg rest that can be folded and unfolded at the front end, a headrest arranged on the top of the backrest, and characterized in that: side wing storage grooves are arranged at both ends of the front side of the backrest, side wings are flipped and mounted on the side wing storage grooves, and the side wings can adjust their support angles in a rotatable manner, and armrests are rotatably mounted on the left and right sides of the backrest, and the armrests can be stored in the sides of the backrest; the seat has a sitting state and a bed state, in which the backrest is flattened backwards relative to the seat cushion, the leg rest is unfolded forward relative to the seat cushion, the side wings are stored in the side wing storage grooves, and the armrests are stored in the sides of the backrest.

[0007] By adopting the above structure, the car seat can be independently transformed into a bed by folding various functional components, without the need 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 in the car seat increase the comfort experience of the passengers in the seat mode.

[0008] As a preference: the armrest is rotatably mounted on the side of the backrest via a first drive assembly, the first drive assembly comprising a first motor and a transmission gear connected to the first motor, the armrest having a horizontally extending transmission part, the transmission part being inserted into the transmission gear. With the above structure, the armrest can be driven to rotate forward and backward by the first motor driving the transmission gear to rotate, thereby realizing the function of adjusting the use angle of the armrest.

[0009] Preferably, the side of the backrest is provided with an armrest storage groove, and the backrest is provided with a folding device, which 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 groove. With the above structure, after the seat is transformed into a bed, the armrest can be folded in the armrest storage groove, so that the overall structure is more compact.

[0010] Preferably, the transmission gear is provided with a mounting through hole, the transmission part can be axially slidably inserted into the mounting through hole, and the transmission part is provided with a key block, the key block is used to enable the transmission part to rotate synchronously with the transmission gear. With the above structure, the armrest can rotate synchronously with the transmission gear through the key block, and the transmission part can be axially slidably installed in the mounting through hole, and the armrest can be folded inwardly in the armrest storage groove.

[0011] Preferably, the folding device includes a third motor and a screw driven to rotate by the third motor, the transmission part is a hollow tubular structure, the screw is inserted into the transmission part, one end of the transmission part is provided with a threaded sleeve that rotates with the screw, the screw is threadedly sleeved in the threaded sleeve, the transmission part has arc holes arranged along the circumferential direction, the threaded sleeve is provided with a limiting protrusion protruding outward, and the limiting protrusion is inserted in the arc hole; the backrest is provided with a limiting bracket, the limiting bracket has a limiting groove extending along the width direction of the backrest, and the limiting protrusion is slidably arranged in the limiting groove. With the above structure, the design of the limiting groove ensures that the rotation of the screw cannot drive the threaded sleeve to rotate, and can only force the threaded sleeve to move back and forth in the limiting groove, thereby realizing the folding function of the armrest, and the provided arc hole can limit the angle of rotation of the armrest forward and backward, while avoiding motion interference with the folding device.

[0012] Preferably, the side wing is rotatably mounted via a second driving mechanism, the second driving mechanism comprises a second motor and a rotating rod connected to the second motor, and the side wing is fixedly sleeved on the rotating rod. With the above structure, the rotation of the side wing can be electrically controlled.

[0013] Preferably, a fan-shaped block is fixedly arranged on the top of the rotating rod, an arc-shaped tooth segment is arranged on the arc surface of the fan-shaped block, a worm is connected to the output end of the second motor, and the worm and the arc-shaped tooth segment are meshed with each other. With the above structure, the rotation of the side wing can be realized, and the design of the fan-shaped block also effectively limits the rotation angle of the side wing.

[0014] Preferably, a connecting rod mechanism is provided between the seat cushion and the backrest, and when the backrest is flipped backward, the connecting rod mechanism can force the rear end of the seat cushion to lift upward. The above structure can ensure that the surface of the seat is flatter when it is switched to a bed, thereby increasing the riding comfort of the occupants.

[0015] Preferably, the link mechanism comprises a first link, a second link, a third link, a fourth link and a fifth link which are hinged in sequence, the first link being fixedly arranged at one end away from the second link at the side of the backrest, a rotating seat being rotatably arranged at the side of the seat cushion, the third link being hinged on the rotating seat, the fifth link being arranged along the front-to-back direction of the seat cushion, the front end of the fifth link being hinged on the seat cushion, and the fourth link being hinged at the rear end of the fifth link. With the above structure, when the backrest is flipped backward, the link mechanism can drive the rear end of the fifth link to lift backward, thereby lifting the rear end of the seat cushion upward, so as to ensure that the whole is flatter, thereby increasing the overall comfort of the occupant.

[0016] Preferably, a flipping device is provided on the top of the backrest, the flipping device comprises a fourth motor and a rotating block connected to the fourth motor, and the headrest is fixed on the rotating block. With the above structure, the headrest can be folded backward relative to the backrest.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The car seat that can be transformed into a bed provided by the present invention can be independently transformed into a bed by flipping and folding various functional accessories. There is no need to splice it 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 in the car seat increase the comfortable riding experience of the occupants in the seat mode.

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

[0020] 3. The connecting rod mechanism can ensure that when the seat is transformed into a bed, the rear end of the seat cushion can be automatically lifted to make the entire bed surface flatter, thereby ensuring overall comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the three-dimensional structure of the seat that can be transformed into a bed;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure after the seat is transformed into a bed;

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

[0024] Figure 4 To show a partial enlarged schematic diagram of the control system of the handrail 6 (the limit bracket 19 is hidden);

[0025] Figure 5 A connection diagram showing the use status of the handrail 6;

[0026] Figure 6 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 A schematic diagram showing the structure of the second driving mechanism;

[0028] Figure 8 A schematic diagram showing the structure of the connecting rod mechanism 16 in the seat mode;

[0029] Fig. 9 It is a structural schematic diagram of the rear connecting rod mechanism 16 after the seat is transformed into a bed;

[0030] Fig.10 A schematic diagram showing the structure of the flipping device. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with embodiments and drawings.

[0032] like Figure 1 and Figure 2 As shown, a car seat that can be transformed into a bed includes 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 and unfoldably mounted at the front end of the seat cushion 1, a headrest 4 is mounted on the top of the backrest 2, side wing storage grooves 2a are formed at both ends of the front side of the backrest 2, side wings 5 ​​are rotatably mounted in the side wing storage grooves 2a, and the side wings 5 ​​can adjust their support angles in a rotating manner, and armrests 6 are rotatably mounted on both sides of the backrest 2, and the armrests 6 can be stored on the sides of the backrest 2. In this embodiment, the seat has a sitting state and a bed state. In the bed state, the backrest 2 is flattened backward 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 on the sides of the backrest 2.

[0033] With such a design, when the various functional accessories are folded and flipped, the car seat can be independently transformed into a bed without being spliced ​​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 6 integrated on the car seat increase the comfort experience of the occupants in the seat mode.

[0034] Specifically, Figure 3 and Figure 4 As shown, the armrest 6 is rotatably installed on the side of the backrest 2 through a first driving assembly, wherein the first driving assembly includes a first motor 7 and a transmission gear 8 connected to the first motor 7 by power, and the armrest 6 has a horizontally extending transmission part 6a, which is passed 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 flip forward and backward.

[0035] like Figure 3 As shown, an armrest storage groove 2b is formed on the side of the backrest 2, and a folding device is provided in the backrest 2. When the armrest 6 is rotated to a vertical state, 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. Such a design can enable the armrest 6 to be folded in the armrest storage groove 2b after the seat is transformed into a bed, thereby 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, and the transmission part 6a can be axially slidably inserted into the mounting through hole 8a, so as to ensure that the folding device can drive the armrest 6 to be folded inwardly 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 can ensure 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 screw rod 10 driven to rotate by the third motor 9, the transmission part 6a is a hollow tubular structure, the screw rod 10 is inserted into the transmission part 6a, and a threaded sleeve 11 is installed at the end of the transmission part 6a away from the armrest 6 to rotate with it, and the screw rod 10 is threadedly sleeved in the threaded sleeve 11. In this embodiment, the transmission part 6a is formed with arc holes 6a1 arranged along the circumferential direction, and the threaded sleeve 11 is formed with a limiting protrusion 11a protruding outward, and the limiting protrusion 11a is inserted in the arc hole 6a1. In addition, a limiting bracket 19 is fixedly installed on the backrest 2, and a limiting groove 19a extending along the width direction of the backrest 2 is formed on the limiting bracket 19, and the part of the limiting protrusion 11a protruding beyond the arc hole 6a1 is slidably installed in the limiting groove 19a.

[0038] Based on the above design, when the seat is switched to a bed, the first motor 7 drives the transmission gear 8 to rotate, and through the set key block 6b, the armrest 6 can be synchronously rotated backward. 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, and the cooperation of the arc hole 6a1 and the limiting protrusion 11a can limit the rotation angle of the armrest 6. When the armrest 6 rotates to a vertical state, the third motor 9 runs and drives the screw rod 10 to rotate. Since the threaded sleeve 11 is limited by the limiting groove 19a and cannot follow the rotation, the threaded sleeve 11 can move on the screw rod, thereby making the armrest 6 fold inward until it is stored in the armrest storage groove 2b.

[0039] In this embodiment, each armrest 6 is respectively configured with a set of first drive components, and such a design can meet the occupant's needs for various support angles of the armrest 6. In addition, the two armrests 6 share a set of folding devices. In order to facilitate the synchronous unfolding and folding of the two armrests 6, the threaded openings of the two threaded sleeves 11 should be completely opposite, or the threaded openings of the two screw rods 10 should be completely opposite.

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

[0041] like Figure 7 As shown, the side wing 5 is rotatably installed by a second driving mechanism, wherein the second driving mechanism includes a second motor 12 and a rotating rod 13 connected to the power of the second motor 12. The side wing 5 is fixedly mounted on the rotating rod 13. The rotating rod 13 is driven to rotate by the second motor 12, thereby driving the side wing 5 to rotate.

[0042] Specifically, Figure 7 As shown, a sector block 14 is fixedly installed on the top of the rotating rod 13, and an arc-shaped tooth segment 14a is formed on the arc surface of the sector block 14. A worm 15 is connected to the output end of the second motor 12, and the worm 15 and the arc-shaped tooth segment 14a are meshed with each other. Such a 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, the two groups of side wings 5 ​​are respectively configured with a set of second driving mechanisms. Such a design can independently control the rotation of each side wing 5 , thereby meeting the needs of passengers of different body shapes for the side wings 5 ​​.

[0044] like Figure 8 and Fig. 9As shown, a connecting rod mechanism 16 is provided between the seat cushion 1 and the backrest 2. The rear end of the seat cushion 1 of the car seat is usually slightly sunken to ensure the riding comfort of the occupants. When the backrest 2 is flipped backward, the connecting rod mechanism 16 can force the rear end of the seat cushion 1 to lift upward, thereby ensuring that when the car seat is switched to a bed, its surface is flatter, thereby ensuring that the occupants are more comfortable when lying down.

[0045] Specifically, the connecting rod mechanism 16 includes 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 hinged in sequence, wherein one end of the first connecting rod 16a away from the second connecting rod 16b is fixedly mounted on the lower end of the side of the backrest 2, a rotating seat 1a is also rotatably mounted on the side of the seat cushion 1, the third connecting rod 16c is hinged on the rotating seat 1a, 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 of the fifth connecting rod 16e.

[0046] Combination Figure 8 and Fig. 9 When the backrest 2 rotates backward, the first connecting rod 16a can drive the second connecting rod 16b to move upward as a whole, and then the second connecting rod 16b drives the third connecting rod 16c to move upward as a whole, and the third connecting rod 16c drives the fourth connecting rod 16d to move upward as a whole, and finally the rear end of the fifth connecting rod 16e is lifted upward as a whole, thereby realizing the lifting of the rear end of the seat cushion 1.

[0047] like Fig.10 As shown, a flipping device is provided on the top of the backrest 2, and the flipping device includes a fourth motor 17 and a rotating block 18 connected to the fourth motor 17. The headrest 4 is fixedly mounted on the top of the rotating block 18. By driving the fourth motor 17, the rotating block 18 can be driven to rotate, thereby driving the headrest 4 to flip forward and backward. With such a design, when the seat is switched to a bed, the headrest 4 can be driven to flip backward to avoid motion interference with the rear car seat.

[0048] Since the car seat leg support is a mature prior art, it 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 start is required to complete the function switching between the seat mode and the bed mode.

[0050] According to the above structure, the specific steps of transforming the car seat into a bed are as follows:

[0051] First, the second motor 12 runs and drives the side wings 5 ​​to unfold outward so that the side wings 5 ​​are folded in the side wing storage groove 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 is in a vertical state; then the third motor 9 drives the screw rod 10 to rotate, so that the armrest 6 moves toward the middle of the backrest 2 until the armrest 6 is stored in the armrest storage groove 2b; finally, the backrest 2 flips backward to a horizontal state to complete the deformation. In addition, while the backrest 2 flips backward, the leg rest 3 can be synchronously flipped forward and unfolded, the fourth motor 17 can synchronously drive the rotating block 18 to rotate, causing the headrest 4 to flip backward 90°, and the connecting rod 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 state.

[0052] The entire deformation process is very convenient and quick, and the seat can become a bed by itself. The additional side wings 5 ​​and armrests 6 increase the comfort of the entire seat, ensuring that the occupants have a sufficiently comfortable driving experience.

[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, and such changes all fall within the scope of protection of the present invention.

Claims

1. A car seat that can be transformed into a bed, comprising a seat cushion (1), a backrest (2) rotatably mounted on the rear end of the seat cushion (1), a leg rest (3) foldable and unfoldable at the front end, a headrest (4) disposed on the top of the backrest (2), characterized in that: Both ends of the front side of the backrest (2) are provided with side wing receiving grooves (2a), and the side wing receiving grooves (2a) are flipped and installed with side wings (5), and the side wings (5) can adjust their support angles in a rotating manner. The left and right sides of the backrest (2) are both rotatably provided with armrests (6), and the armrests (6) can be stored on the sides of the backrest (2); The chair has a sitting state and a bed state. In the bed state, the backrest (2) is flattened backward 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 on the sides of the backrest (2).

2. The car seat that can be transformed into a bed according to claim 1, characterized in that: The armrest (6) is rotatably mounted on the side of the backrest (2) via a first drive assembly, the first drive assembly comprising a first motor (7) and a transmission gear (8) connected to the first motor (7) by power, the armrest (6) having a horizontally extending transmission portion (6a), the transmission portion (6a) being inserted into the transmission gear (8).

3. The car seat that can be transformed into a bed according to claim 2, characterized in that: The side of the backrest (2) is provided with an armrest storage groove (2b), and the backrest (2) is provided with a folding device, which is used to drive 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 car seat that can be transformed into a bed according to claim 3, characterized in that: The transmission gear (8) is provided with a mounting through hole (8a), the transmission part (6a) can be axially slidably inserted into the mounting through hole (8a), and the transmission part (6a) is provided with a key block (6b), and the key block (6b) is used to enable the transmission part (6a) to rotate synchronously with the transmission gear (8).

5. The car seat that can be transformed into a bed according to claim 4, characterized in that: The folding device comprises a third motor (9) and a screw rod (10) driven to rotate by the third motor (9); the transmission part (6a) is a hollow tubular structure; the screw rod (10) is inserted into the transmission part (6a); one end of the transmission part (6a) is provided with a threaded sleeve (11) rotatably matched therewith; the screw rod (10) is threadedly sleeved in the threaded sleeve (11); the transmission part (6a) has an arc-shaped hole (6a1) arranged along the circumferential direction; the threaded sleeve (11) is provided with a limiting protrusion (11a) protruding outward; the limiting protrusion (11a) is inserted into the arc-shaped hole (6a1); The backrest (2) is provided with a limiting bracket (19), the limiting bracket (19) having 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 car seat that can be transformed into a bed according to claim 1, characterized in that: The side wing (5) is rotatably mounted via a second driving mechanism, the second driving mechanism comprising a second motor (12) and a rotating rod (13) connected to the second motor (12) by power, and the side wing (5) is fixedly sleeved on the rotating rod (13).

7. The automobile seat that can be transformed into a bed according to claim 6, characterized in that: A sector block (14) is fixedly arranged on the top of the rotating rod (13), an arc-shaped tooth segment (14a) is arranged on the arc surface of the sector block (14), a worm (15) is connected to the output end of the second motor (12), and the worm (15) and the arc-shaped tooth segment (14a) are meshed with each other.

8. The automobile seat that can be transformed into a bed according to claim 1, characterized in that: A connecting rod mechanism (16) is provided between the seat cushion (1) and the backrest (2); when the backrest (2) flips backwards, the connecting rod mechanism (16) can force the rear end of the seat cushion (1) to lift upwards.

9. The automobile seat that can be transformed into a bed according to claim 8, characterized in that: 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 hinged in sequence, wherein 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-to-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 of the fifth connecting rod (16e).

10. The automobile seat that can be transformed into a bed according to claim 1, characterized in that: A flipping device is arranged on the top of the backrest (2), and the flipping device comprises a fourth motor (17) and a rotating block (18) connected to the fourth motor (17) by power, and the headrest (4) is fixedly arranged on the rotating block (18).

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