Automobile seat with variable formation bed

Abstract

The application discloses a variable formation bed automobile seat, which comprises a cushion, a backrest rotatably arranged at the rear end of the cushion, a leg support foldably and unfoldably arranged at the front end of the cushion, a headrest arranged at the top of the backrest, side wing accommodating grooves arranged at the left and right ends of the front side of the backrest, and side wings rotatably arranged in the side wing accommodating grooves, wherein the side wings can be adjusted in a rotating mode. The left and right sides of the backrest are rotatably provided with armrests, and the armrests can be accommodated in the side of the backrest. In the bed state, the backrest is backwardly and horizontally arranged relative to the cushion, the leg support is unfolded relative to the cushion, the side wings are accommodated in the side wing accommodating grooves, and the armrests are accommodated in the side of the backrest. The seat has the advantages that the automobile seat can be independently changed into a bed by folding the functional components, the bed does not need to be connected with other seats, the whole operation is very convenient, and the armrests, the side wings and the leg support integrated on the seat can increase the comfort experience of the passengers in the seat mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile seats, in particular to a variable bed-forming automobile seat. BACKGROUND

[0002] In order to meet the needs of automobile seats in different scenarios, the automobile seat is provided with multiple modes, such as the zero-gravity mode of the automobile, which switches the passenger from a sitting position to an approximate lying position by tilting the seat back backward and turning the leg rest forward, so as to reduce the discomfort of the passenger caused by long-time sitting.

[0003] With the increase of long-distance travel and camping needs, the zero-gravity mode has been unable to meet the needs of passengers, and the seat bed technology has emerged as the times require. In the prior art, the seat bed is formed by removing the headrest of the front seat and turning the seat back to a horizontal position and splicing it with the rear seat cushion to form a bed, thereby realizing the flat lying of the passenger. The entire transformation process needs to be manually operated by the passenger, and needs to be combined and spliced with the rear seat, which is very inconvenient. SUMMARY

[0004] Therefore, the present application provides a variable bed-forming automobile seat, which can more conveniently form a bed and meet the comfort needs of passengers.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] A variable bed-forming automobile seat, comprising a seat cushion, a seat back rotatably installed at the rear end of the seat cushion, and a leg rest foldably assembled at the front end of the seat cushion, wherein a headrest is arranged at the top of the seat back, characterized in that: side wing storage grooves are arranged at both ends of the front side of the seat back, and side wings are rotatably installed in the side wing storage grooves, the side wings can adjust the supporting angle in a rotating manner, and armrests are rotatably arranged at both sides of the seat back, and the armrests can be stored in the side of the seat back; the seat has a sitting position and a bed-forming state, in the bed-forming state, the seat back is tilted backward 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 side of the seat back.

[0007] With the above structure, the automobile seat can be independently transformed into a bed by folding each functional component, without the need for splicing with other seats to form a bed, and the overall operation is very convenient. At the same time, the armrests, side wings and leg rests integrated on the automobile seat also increase the comfort experience of the passenger in the seat mode.

[0008] As preferred: the armrest is rotatably installed on the backrest side portion through a first driving assembly, the first driving assembly comprises a first motor and a transmission gear in power connection with the first motor, the armrest has a horizontally extending transmission portion, and the transmission portion is arranged in the transmission gear. With the above structure, the first motor drives the transmission gear to rotate, thereby driving the armrest to rotate forward and backward, and the function of adjusting the using angle of the armrest is realized.

[0009] As preferred: the backrest side portion is provided with an armrest receiving groove, and a folding device is arranged in the backrest, and the folding device is used to drive the armrest to move along the width direction of the backrest, so that the armrest can be accommodated in the armrest receiving groove. With the above structure, after the seat is transformed into a bed, the armrest can be folded in the armrest receiving groove, so that the overall structure is more compact.

[0010] As preferred: an installation through hole is arranged on the transmission gear, the transmission portion is arranged in the installation through hole in an axially slidable manner, a key block is arranged on the transmission portion, and the key block is used to enable the transmission portion to rotate synchronously with the transmission gear. With the above structure, the key block enables the armrest to rotate synchronously with the transmission gear, and the axially slidable arrangement of the transmission portion in the installation through hole enables the armrest to be folded inwardly in the armrest receiving groove.

[0011] As preferred: the folding device comprises a third motor and a screw rod driven to rotate by the third motor, the transmission portion is in a hollow tubular structure, the screw rod is arranged in the transmission portion, one end of the transmission portion is provided with a threaded sleeve in rotational cooperation with the transmission portion, the screw rod is sleeved in the threaded sleeve, the transmission portion is provided with an arc-shaped hole arranged in a circumferential direction, the threaded sleeve is provided with a limiting protrusion protruding outwardly, the limiting protrusion is arranged in the arc-shaped hole, a limiting support is arranged on the backrest, the limiting support is provided with a limiting groove extending along the width direction of the backrest, and the limiting protrusion is arranged in the limiting groove in a slidable manner. With the above structure, the limiting groove ensures that the screw rod cannot drive the threaded sleeve to rotate, but only forces the threaded sleeve to move back and forth in the limiting groove, thereby realizing the folding function of the armrest, and the arc-shaped hole can limit the rotating angle of the armrest forward and backward, and avoid motion interference with the folding device.

[0012] As preferred: the side wing is rotatably installed through a second driving mechanism, the second driving mechanism comprises a second motor and a rotating rod in power connection with the second motor, and the side wing is sleeved on the rotating rod. With the above structure, the rotation of the side wing can be controlled electrically.

[0013] As preferred: a sector block is fixedly arranged at the top of the rotating rod, an arc-shaped tooth segment is arranged on the arc-shaped surface of the sector block, a worm is connected to the output end of the second motor, and the worm is in meshing engagement with the arc-shaped tooth segment.

[0014] As preferred: a link mechanism is arranged between the seat cushion and the backrest, and when the backrest is flipped backward, the link mechanism can force the rear end of the seat cushion to be lifted upward.

[0015] As preferred: the link mechanism comprises a first link, a second link, a third link, a fourth link and a fifth link which are sequentially hinged, one end of the first link away from the second link is fixedly arranged at the side of the backrest, a rotating seat is rotatably arranged at 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, the front end of the fifth link is hinged to the seat cushion, and the fourth link is hinged to the rear end of the fifth link.

[0016] As preferred: a flipping device is arranged at the top of the backrest, the flipping device comprises a fourth motor and a rotating block in power connection with the fourth motor, and the headrest is fixedly arranged on the rotating block.

[0017] Compared with the prior art, the automobile seat capable of being changed into a bed has the following beneficial effects:

[0018] 1. The automobile seat capable of being changed into a bed can be changed into a bed independently by flipping and folding the functional accessories, without the need of being spliced with other seats to form a bed, and the overall operation is very convenient, and the armrest, the side wing and the leg support integrated on the automobile seat increase the comfortable riding experience of the passenger in the seat mode.

[0019] 2. The side wing, the armrest, the headrest and the leg support increase the comfort of the seat, and meet the more comfortable riding experience of the passenger.

[0020] 3. The link mechanism can ensure that the rear end of the seat cushion is automatically lifted when the seat is changed into a bed, so that the whole bed surface is more flat, and the overall comfort is ensured. BRIEF DESCRIPTION OF DRAWINGS

[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 car seat that can be converted into a bed 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, and the side wings 5 ​​can be adjusted in a rotating manner to adjust their support angle. Armrests 6 are rotatably mounted on both the left and right sides of the backrest 2, and the armrests 6 can be retracted into the sides of the backrest 2. In this embodiment, the seat 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 retracted into the side wing storage grooves 2a, and the armrests 6 are retracted into the sides of the backrest 2.

[0033] In this way, when each functional accessory is folded and turned over, the car seat can be independently transformed into a bed, without the need to be spliced with other seats to form a bed, and the overall operation is very convenient. At the same time, the leg rest 3, the side wing 5 and the armrest 6 integrated on the car seat also increase the comfort experience of the occupant in the seat mode.

[0034] Specifically, as shown in Figure 3 and Figure 4 , 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 in power connection with the first motor 7, and the armrest 6 has a horizontally extending transmission part 6a which is arranged inside the transmission gear 8. When the first motor 7 operates, it can drive the transmission gear 8 to rotate, thereby driving the armrest 6 to perform forward and backward turning movement.

[0035] As shown in Figure 3 , the side of the backrest 2 is formed with an armrest storage slot 2b, and a folding device is arranged in the backrest 2. When the armrest 6 is turned to the 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 slot 2b. In this way, after the seat is transformed into a bed, the armrest 6 can be folded in the armrest storage slot 2b, thereby making the overall structure more compact.

[0036] As shown in Figure 6 , in this embodiment, a mounting through hole 8a is formed in the middle of the transmission gear 8, and the transmission part 6a is axially slidably arranged in the mounting through hole 8a. In this way, it can be ensured that the folding device can drive the armrest 6 to fold inwardly in the armrest storage slot 2b. A key block 6b is also fixedly installed on the transmission part 6a, and the key block 6b is also arranged in the mounting through hole 8a. By means of the key block 6b, it can be ensured that the entire armrest 6 can be synchronously rotated with the transmission gear 8.

[0037] As shown in Figures 4 to 6 , the folding device includes a third motor 9 and a lead screw 10 driven to rotate by the third motor 9. The transmission part 6a is a hollow tubular structure, the lead screw 10 is arranged inside the transmission part 6a, and the end of the transmission part 6a away from the armrest 6 is provided with a threaded sleeve 11 in rotational cooperation with it. The lead screw 10 is screwed into the threaded sleeve 11. In this embodiment, the transmission part 6a is formed with an arc-shaped hole 6a1 arranged in the circumferential direction, and the threaded sleeve 11 is formed with a limiting protrusion 11a protruding outwardly. The limiting protrusion 11a is arranged in the arc-shaped hole 6a1. In addition, a limiting bracket 19 is also fixedly installed on the backrest 2, and the limiting bracket 19 is formed with a limiting slot 19a extending along the width direction of the backrest 2. The part of the limiting protrusion 11a protruding beyond the arc-shaped hole 6a1 is slidably installed in the limiting slot 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 the armrest 6 can be synchronously rotated rearward due to the key block 6b. Since the threaded sleeve 11 is rotatably installed at the end of the transmission part 6a, no motion interference is formed between the first driving assembly and the folding device. The cooperation between the arc-shaped hole 6a1 and the limiting protrusion 11a can limit the rotation angle of the armrest 6. When the armrest 6 is rotated to a vertical state, the third motor 9 operates and drives the screw rod 10 to rotate. Since the threaded sleeve 11 is limited from rotating by the limiting groove 19a, the threaded sleeve 11 can move on the screw rod 10, and the armrest 6 is folded inward until it is accommodated in the armrest accommodation groove 2b.

[0039] In the embodiment, each armrest 6 is correspondingly provided with a set of first driving assemblies. Such a design can meet the needs of passengers 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] As shown in Figure 5 , a limiting block 6c is formed on the transmission part 6a. When the armrest 6 is folded inward to a certain distance, the limiting block 6c can abut against the transmission gear 8, thereby limiting the folding distance of the armrest 6.

[0041] As shown in Figure 7 , the side wing 5 is rotatably installed by a second driving mechanism. The second driving mechanism includes a second motor 12 and a rotating rod 13 connected with the second motor 12 in power. The side wing 5 is fixedly sleeved 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, as shown in Figure 7 , a sector block 14 is fixedly installed at the top of the rotating rod 13. An arc-shaped tooth segment 14a is formed on the arc-shaped surface of the sector block 14. A worm 15 is connected with the output end of the second motor 12. The worm 15 is engaged with the arc-shaped tooth segment 14a. Such a design can stably control the rotation of the side wing 5, and the sector block 14 can limit the rotation angle of the side wing 5.

[0043] In the embodiment, each side wing 5 is correspondingly provided with a set of second driving mechanisms. Such a design can individually control the rotation of each side wing 5, thereby meeting the needs of passengers of different body types for the side wing 5.

[0044] As shown in 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] Firstly, the second motor 12 operates and drives the side wings 5 to unfold outwardly so that the side wings 5 are folded in the side wing folding grooves 2a, and then the backrest 2 is flat; then the first motor 7 drives the transmission gear 8 to rotate, and then drives the armrest 6 to turn backward until the armrest 6 is in the vertical state; then the third motor 9 drives the screw rod 10 to rotate, and then drives the armrest 6 to move toward the middle of the backrest 2 until the armrest 6 is folded in the armrest folding groove 2b; finally, the backrest 2 is turned backward to the horizontal state, and the transformation is completed. In addition, when the backrest 2 is turned backward, the leg rest 3 can be synchronously turned forward and unfolded, the fourth motor 17 can synchronously drive the rotating block 18 to rotate, so that the headrest 4 is turned backward by 90°, and the connecting rod mechanism 16 can control the rear end of the cushion 1 to be lifted upward at the same time, so that the cushion 1 is in the horizontal state.

[0052] The whole transformation process is very convenient and fast, and the seat can be individually formed into a bed, and the additional side wings 5 and the armrest 6 increase the comfort of the whole seat, and ensure that the passenger has a comfortable driving experience.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and those skilled in the art can make various similar expressions under the inspiration of the present application without departing from the purpose and claims of the present application. Such changes fall within the scope of the present application.

Claims

1. A variable formation bed automobile seat, comprising a cushion (1), a backrest (2) is rotatably mounted at the rear end of the cushion (1), a leg rest (3) is foldably assembled at the front end of the 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, the side wing storage groove (2a) is reversely installed with a side wing (5), the side wing (5) can adjust the supporting angle in a rotating manner, the backrest (2) is rotatably provided with an armrest (6) at both sides, and 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); The armrest (6) has a horizontally extending transmission part (6a); The backrest (2) is provided with an armrest storage groove (2b) at the side, the backrest (2) is internally 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); The folding device comprises a third motor (9) and a lead screw (10) driven to rotate by the third motor (9), the transmission part (6a) is a hollow tubular structure, the lead screw (10) is arranged in the transmission part (6a), one end of the transmission part (6a) is provided with a threaded sleeve (11) matched with the transmission part (6a) in rotation, 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, and the threaded sleeve (11) is provided with a limiting protrusion (11a) protruding outward, and the limiting protrusion (11a) is arranged in the arc-shaped hole (6a1).

2. The variable formation seat of claim 1, wherein: The armrest (6) is rotatably arranged at 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 transmission part (6a) is arranged in the transmission gear (8).

3. The variable seat pan of claim 2, wherein: The transmission gear (8) is provided with a mounting through hole (8a), the transmission part (6a) is arranged in the mounting through hole (8a) in an axially sliding manner, 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).

4. The variable seat bed of claim 1, wherein: The backrest (2) is provided with a limiting support (19), the limiting support (19) has a limiting groove (19a) extending in the width direction of the backrest (2), and the limiting protrusion (11a) is arranged in the limiting groove (19a) in a sliding manner.

5. The variable seat bed of claim 1, wherein: The side wing (5) is rotatably arranged 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).

6. The variable seat bed formation automotive seat of claim 5, wherein: The rotating rod (13) is fixedly provided with a sector block (14) at the top, 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.

7. The variable formation seat 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.

8. The variable seat bed of claim 7, 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 and 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).

9. The variable formation seat of claim 1, wherein: The backrest (2) is provided with a flipping device at the top, 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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