Folding automobile seat capable of being unfolded into bed

Abstract

The utility model discloses a folding automobile seat capable of being unfolded into a bed, which comprises a seat backrest, a cushion and a folding backrest, and the top end of the folding backrest is hinged to the top end of the seat backrest; a first locking assembly is arranged between the seat backrest and the folding backrest, so that the seat backrest and the folding backrest as a whole relatively rotate around the cushion for comfort adjustment; when the seat is unfolded to form a bed, after the first locking assembly and the angle adjuster are unlocked through the first unlocking assembly, the seat backrest is pushed backwards to turn over, so that the folding backrest is linked to be unfolded backwards until the seat backrest and the folding backrest are unfolded to form the bed. The folding backrest is arranged behind the backrest of the seat, so that the problems that an existing seat is too small in length and poor in comfort when turned into a bed are solved; a locking assembly is arranged between the seat backrest and the folding backrest and can integrally rotate to complete comfort adjustment of the automobile seat; the seat backrest and the folding backrest can be turned over to form a bed and can also be integrally rotated at the designed position for comfort adjustment.

Description

Technical Field

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

[0002] In modern life, cars are a common choice for people to travel and tour. Usually, the backrest of a car seat can be adjusted backward to form a semi-lying resting state to increase the comfort of passengers and relieve fatigue during long-distance rides. Now, some car seats have the function of flipping the backrest backward and flattening it to form a bed with the seat cushion to improve the comfort of passengers. However, the length of the car seat after flattening is only the sum of the length of the backrest and the seat cushion. The length is limited, the comfort is not good, and the passenger experience is poor. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a folding car seat which can solve the problem of limited length after the seat is flipped into a bed and improve the comfort.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a folding car seat that can be unfolded into a bed, comprising a seat back and a cushion, wherein a recliner is provided at a hinge between the seat back and the cushion, and further comprising a folding backrest, wherein the top end of the folding backrest is hinged to the top end of the seat backrest; a first locking assembly is provided between the seat back and the folding backrest, so that the seat back and the folding backrest can rotate relative to each other around the cushion as a whole for comfort adjustment; when unfolding into a bed, after the first locking assembly and the recliner are unlocked by the first unlocking assembly, the seat back is pushed backward to flip over, thereby linking the folding backrest to unfold backward, until the seat back and the folding backrest are flattened into a bed.

[0005] Preferably, the seat back includes a seat back frame assembly, the folding back includes a folding back frame assembly, the seat back frame assembly and the folding back frame assembly are hinged through the front and rear backrest connecting frame assembly; the seat back also includes a front gear connecting rod, the seat back frame assembly, the front and rear backrest connecting frame assembly, the front gear connecting rod and the seat cushion are hinged in sequence to form a front parallelogram linkage mechanism; the folding back also includes a rear gear connecting rod and a lower connecting rod, the folding back frame assembly, the front and rear backrest connecting frame assembly, the rear gear connecting rod and the lower connecting rod are hinged in sequence to form a rear parallelogram linkage mechanism; a pair of relatively meshing transmission gears are arranged between the front parallelogram linkage mechanism and the rear parallelogram linkage mechanism, so as to realize the flipping of the seat back and the linkage of the folding backrest to unfold or fold.

[0006] Preferably, the first locking assembly includes a backrest lock and a backrest lock buckle, which cooperate to lock the folding backrest and the seat back together; the first unlocking assembly includes a first unlocking active member, a backrest angle adjuster unlocking cable and a backrest lock unlocking cable; the first unlocking active member unlocks the angle adjuster through the backrest angle adjuster unlocking cable, and simultaneously unlocks the first locking assembly through the backrest lock unlocking cable, so that the backrest lock and the backrest lock buckle are disengaged and unlocked, thereby realizing the seat back linkage folding backrest to unfold or fold.

[0007] Preferably, it also includes a second locking assembly and a second unlocking assembly, the second unlocking assembly including a second unlocking active member, a recliner unlocking cable and a lie-flat pin unlocking cable; the second locking assembly includes a lie-flat pin arranged on the seat cushion, and a pin hole arranged on the front gear connecting rod; the second unlocking active member unlocks the recliner through the recliner unlocking cable, and simultaneously unlocks the second locking assembly through the lie-flat pin unlocking cable, so that the lie-flat pin withdraws from the pin hole on the front gear connecting rod and unlocks, so that the seat back and the folding backrest can rotate relative to the seat cushion as a whole for comfort adjustment.

[0008] Preferably, a support tube is provided at the bottom end of the front and rear backrest connecting frame assembly to serve as a middle support when the seat back and the folding backrest are unfolded into a bed.

[0009] Preferably, a floor lock assembly that can be flipped open is provided at the bottom end of the folding backrest, and the first unlocking component also includes a floor lock unlocking cable, one end of the floor lock unlocking cable is connected to the floor lock assembly, and the other end is connected to the first unlocking active component; the first unlocking active component can drive the floor lock assembly to flip open through the floor lock unlocking cable, and when the folding backrest is laid flat to form a bed, the floor lock assembly is fixed to the floor lock buckle set on the car body carpet.

[0010] Preferably, a backrest connecting frame torsion spring is provided between the front gear connecting rod and the rear gear connecting rod to provide a return auxiliary force when the folding backrest is folded.

[0011] Preferably, a backrest torsion spring is mounted on the hinged rotating shaft between the seat back and the seat cushion; the functions of the backrest torsion spring include: on the one hand, when the first unlocking active part is pulled, the seat back can rebound to a preset initial angle under the action of the backrest torsion spring, so as to ensure that the lying flat pin can be inserted into the pin hole of the front gear connecting rod, and at the same time ensure that there is enough space at the rear when the seat back is linked to the folding backrest and unfolded; on the other hand, it provides a return auxiliary force to the seat back when the folding backrest is folded.

[0012] Preferably, the seat cushion is provided with a lifting component at one end close to the seat back, and when unfolded into a bed, the seat cushion is lifted and flush with the flat seat back, thereby improving comfort.

[0013] Preferably, the first unlocking active member is an unlocking pull strap; and the second unlocking active member is an unlocking handle.

[0014] Beneficial effects of the utility model:

[0015] 1) The problem that the existing seat is too small when folded into a bed and has poor comfort is solved by providing a folding backrest behind the seat back;

[0016] 2) A locking assembly is provided between the seat back and the folding backrest, which can be rotated as a whole to adjust the comfort of the car seat;

[0017] 3) Furthermore, the seat back and the folding backrest are equipped with locking components when adjusting the comfort and using it as a bed to ensure the stability and safety of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the initial state of the utility model;

[0019] Figure 2 It is a schematic diagram of the pre-expanded state of the utility model;

[0020] Figure 3 This is a schematic diagram of the utility model in the unfolded bed state;

[0021] Figure 4 It is a structural schematic diagram of the initial state of the seat frame;

[0022] Figure 5 It is a structural schematic diagram of the seat frame in a pre-expanded state;

[0023] Figure 6 for Figure 5 Rear view of

[0024] Figure 7 It is a structural schematic diagram of the seat frame unfolding process;

[0025] Figure 8 for Figure 7 Left view of;

[0026] Fig. 9 This is a left view of the structure when the seat frame is unfolded into a bed;

[0027] Fig.10 is a structural schematic diagram of a first locking assembly;

[0028] Fig.11 It is a structural schematic diagram of the backrest lock and the backrest lock buckle in a locked state;

[0029] Fig.12 It is a structural schematic diagram of a lying flat latch;

[0030] Fig.13 It is a structural schematic diagram of the lying-flat pin being inserted into the pin hole of the front gear connecting rod;

[0031] Fig.14 This is the schematic diagram of the seat frame in the pre-expanded state;

[0032] Fig.15 This is the schematic diagram of the seat frame unfolding process;

[0033] Fig.16 This is the schematic diagram of the seat frame unfolding into a bed;

[0034] Fig.17 Schematic diagram for seat back comfort adjustment;

[0035] In the figure: A-front parallelogram linkage, B-rear parallelogram linkage, 1-headrest assembly, 2-unlocking active member, 3-seat back, 3A-seat back frame assembly, 4-folding back, 4A-folding back frame assembly, 5-seat cushion, 6-unlocking handle, 7-body carpet, 8-floor lock, 9-floor lock assembly, 10-support tube, 11-angle adjuster unlocking cable, 12-lying flat pin unlocking cable, 13-back lock, 14-back lock buckle, 15-angle adjuster, 16-lying flat pin, 17-front gear connecting rod, 18-back adjuster unlocking cable, 19-back torsion spring, 20-back lock unlocking cable, 21-floor lock unlocking cable, 22-transmission gear, 23-front and rear back connection frame assembly, 24-rear gear connecting rod, 25-lower connecting rod, 26-back connection frame torsion spring. DETAILED DESCRIPTION

[0036] In order to better understand the improvements made by the present invention relative to the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] like Figure 1 As shown in FIG. 3 , the foldable car seat that can be unfolded into a bed is mainly composed of a seat back 3, a seat cushion 5 and a foldable back 4. The top end of the foldable back 4 is hinged to the top end of the seat back 3.

[0038] like Figure 4As shown in FIG. 9 , the seat back 3 is mainly composed of a seat back frame assembly 3A and a front gear connecting rod 17, and the folding back 4 is mainly composed of a folding back frame assembly 4A, a rear gear connecting rod 24, a lower connecting rod 25, and a flip-open floor lock assembly 9, wherein the seat back frame assembly 3A and the folding back frame assembly 4A are hingedly connected through a front and rear back connecting frame assembly 23, and a support tube 10 is provided at the bottom end of the front and rear back connecting frame assembly 23, serving as the middle support when the seat back 3 and the folding back 4 are unfolded into a bed. At the same time, a recliner 15 is provided at the hinge of the seat back 3 and the seat cushion 5, so that the seat back 3 can be adjusted in angle relative to the seat cushion 5, and a back torsion spring 19 is mounted on the hinged rotating shaft of the seat back 3 and the seat cushion 5.

[0039] A first locking assembly is provided between the seat back 3 and the folding back 4. When locked, the seat back 3 and the folding back 4 rotate relative to each other around the seat cushion 5 as a whole for comfort adjustment. When unfolded into a bed, the first locking assembly and the recliner 15 are unlocked by the first unlocking assembly. The first locking assembly is mainly composed of a backrest lock 13 and a backrest lock buckle 14, which cooperate to lock the folding back 4 and the seat back 3 together. Fig.10 As shown, the backrest lock buckle 14 and the backrest lock 13 are respectively arranged at the bottom ends of the seat backrest frame assembly 3 and the folding backrest frame assembly 4A, and the backrest lock 13 adopts a lock hook structure and is hinged on the folding backrest frame assembly 4A.

[0040] The first unlocking assembly is mainly composed of a first unlocking active member 2, a recliner unlocking cable 18, a back lock unlocking cable 20, and a floor lock unlocking cable 21. The first unlocking active member 2 is preferably an unlocking pull belt, one end of which is exposed and provided with a pulling portion, and the other end is connected to the recliner unlocking cable 18, the back lock unlocking cable 20, and the floor lock unlocking cable 21. The first unlocking active member 2 unlocks the recliner 15, the first locking assembly, and the floor lock assembly 9 respectively through the recliner unlocking cable 18, the back lock unlocking cable 20, and the floor lock unlocking cable 21.

[0041] like Fig.12As shown in FIG. 13, the car seat is also provided with a second locking component and a second unlocking component, which are preferably arranged on the seat cushion 5. The second unlocking component is mainly composed of a second unlocking active member 6, a recliner unlocking cable 11 and a lying flat latch unlocking cable 12. The second locking component is mainly composed of a lying flat latch 16 arranged on the seat cushion 5 and a pin hole arranged on the front gear connecting rod 17. The lying flat latch 16 is inserted into the pin hole on the front gear connecting rod 17 as a hinge shaft between the front gear connecting rod 17 and the seat cushion 5. The second unlocking active member 6 unlocks the recliner 15 through the recliner unlocking cable 11, and unlocks the second locking component through the lying flat latch unlocking cable 12, so that the lying flat latch 16 withdraws from the pin hole on the front gear connecting rod 17 to unlock. The second unlocking active member 6 is preferably an unlocking handle.

[0042] like Fig.14 As shown in FIG. 16 , the seat back frame assembly 3A, the front and rear back connection frame assembly 23, the front gear link 17 and the seat cushion 5 are hinged in sequence to form a front parallelogram linkage mechanism A, and the folding back frame assembly 4A, the front and rear back connection frame assembly 23, the rear gear link 24 and the lower connection link 25 are hinged in sequence to form a rear parallelogram linkage mechanism B. A pair of relatively meshing transmission gears 22 are arranged between the front parallelogram linkage mechanism A and the rear parallelogram linkage mechanism B, and a back connection frame torsion spring 26 is arranged between the front gear link 17 and the rear gear link 24 to provide a return auxiliary force when the folding backrest 4 is folded. The transmission gears 22 are respectively arranged at the upper ends of the front gear link 17 and the upper ends of the rear gear link 24.

[0043] When the car seat needs to be folded into a bed, no matter where the backrest assembly is, the unlocking active member 2 is pulled, and the seat back 3 can rebound to the preset initial angle under the action of the backrest torsion spring 19 to ensure that the lying flat pin 16 can be inserted into the pin hole of the front gear connecting rod 17, and at the same time ensure that there is enough space behind the seat back 3 when the folding backrest 4 is unfolded. Therefore, the preset initial angle is generally 80° to 90°. At this time, the car seat is in a pre-expanded state, and the backrest torsion spring 19 can also provide a return auxiliary force to the seat back 3 when the folding backrest 4 is folded. While the car seat is in the pre-expanded state, the first unlocking active member 2 pulls the backrest angle adjuster unlocking cable 18, the backrest lock unlocking cable 20 and the floor lock unlocking cable 21 to move upward, the adjuster 15 is unlocked, the backrest lock buckle 14 rotates to disengage from the backrest lock 13 to achieve unlocking, and the floor lock assembly 9 flips open. Thus, the seat back frame assembly 3A can rotate relative to the seat cushion 5 and the lower end of the seat back 3 is separated from the lower end of the folding seat 4. The seat back frame assembly 3A is turned by manual pressing or motor driving to turn over, driving the front parallelogram linkage A to turn over, and the rear parallelogram linkage B is turned over in linkage with the mutually meshing transmission gears 22, thereby realizing the seat back turning linkage folding back 4 to unfold or fold. When the folding back 4 is laid flat to form a bed, the floor lock assembly 9 is fixed to the floor lock buckle 8 set on the body carpet 7, and the support tube 10 is supported on the carpet 7. In order to improve the comfort after forming a bed, the seat cushion 5 is provided with a lifting component at one end close to the seat back 3. When unfolding to form a bed, the seat cushion 5 is lifted and flush with the flattened seat back 3.

[0044] like Fig.17 As shown, when comfort adjustment is required, the seat back 3 and the folding back 4 are fastened as a whole through the first unlocking group, and the second unlocking active member 6 is pressed. The second unlocking active member 6 can simultaneously pull the recliner unlocking cable 11 and the lie-flat latch unlocking cable 12 to unlock the recliner 15 and the lie-flat latch 16. If the seat back 3 is at a preset initial angle at this time, the lie-flat latch 16 withdraws from the pin hole on the front gear connecting rod 17 to unlock, and the seat back 3 and the folding back 4 rotate as a whole around the recliner 15 relative to the seat cushion 5 for comfort adjustment, and the lie-flat latch 16 can slide on the surface of the front gear connecting rod 17. When performing comfort adjustment and bed-making operations, a mechanism is provided for locking to ensure seat stability and safety.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A folding car seat capable of being unfolded into a bed, comprising a seat back (3) and a seat cushion (5), wherein a recliner (15) is provided at a hinge between the seat back (3) and the seat cushion (5), and characterized in that: The bed also includes a folding backrest (4), the top end of which is hinged to the top end of the seat backrest (3); a first locking assembly is provided between the seat backrest (3) and the folding backrest (4), so that the seat backrest (3) and the folding backrest (4) can be relatively rotated around the seat cushion (5) as a whole for comfort adjustment; when unfolding into a bed, the first locking assembly and the angle adjuster (15) are unlocked by the first unlocking assembly, and the seat backrest is pushed backward to flip, thereby linking the folding backrest (4) to unfold backward, until the seat backrest (3) and the folding backrest (4) are flattened into a bed.

2. The foldable car seat that can be unfolded into a bed according to claim 1, characterized in that: The seat back (3) comprises a seat back frame assembly (3A), and the folding back (4) comprises a folding back frame assembly (4A), and the seat back frame assembly (3A) and the folding back frame assembly (4A) are hingedly connected via a front and rear back connection frame assembly (23); the seat back (3) also comprises a front gear connecting rod (17), and the seat back frame assembly (3A), the front and rear back connection frame assembly (23), the front gear connecting rod (17) and the seat cushion (5) are hingedly connected in sequence to form a front parallelogram connecting rod mechanism (A); The folding backrest (4) further comprises a rear gear connecting rod (24) and a lower connecting rod (25); the folding backrest frame assembly (4A), the front and rear backrest connecting frame assembly (23), the rear gear connecting rod (24) and the lower connecting rod (25) are hinged in sequence to form a rear parallelogram connecting rod mechanism (B); a pair of relatively meshing transmission gears (22) are arranged between the front parallelogram connecting rod mechanism (A) and the rear parallelogram connecting rod mechanism (B), so as to realize the seat back flipping linkage folding backrest (4) to unfold or fold.

3. The foldable car seat that can be unfolded into a bed according to claim 2, characterized in that: The first locking component comprises a backrest lock (13) and a backrest lock buckle (14), which cooperate to lock the folding backrest (4) and the seat backrest (3) together; the first unlocking component comprises a first unlocking active member (2), a backrest angle adjuster unlocking cable (18) and a backrest lock unlocking cable (20); the first unlocking active member (2) unlocks the angle adjuster (15) through the backrest angle adjuster unlocking cable (18), and simultaneously unlocks the first locking component through the backrest lock unlocking cable (20), so that the backrest lock (13) and the backrest lock buckle (14) are disengaged and unlocked, thereby realizing the linkage between the seat backrest (3) and the folding backrest (4) to unfold or fold.

4. The foldable car seat that can be unfolded into a bed according to claim 3, characterized in that: It also includes a second locking component and a second unlocking component, wherein the second unlocking component includes a second unlocking active component (6), a recliner unlocking cable (11) and a lie-flat latch unlocking cable (12); the second locking component includes a lie-flat latch (16) arranged on the seat cushion (5), and a pin hole arranged on the front gear connecting rod (17); the second unlocking active component (6) unlocks the recliner (15) through the recliner unlocking cable (11), and simultaneously unlocks the second locking component through the lie-flat latch unlocking cable (12), so that the lie-flat latch (16) withdraws from the pin hole on the front gear connecting rod (17) to unlock, so that the seat back (3) and the folding backrest (4) can rotate relative to the seat cushion (5) as a whole for comfort adjustment.

5. The foldable car seat that can be unfolded into a bed according to claim 2, characterized in that: A support tube (10) is provided at the bottom end of the front and rear backrest connecting frame assembly (23) to serve as a middle support when the seat backrest (3) and the folding backrest (4) are unfolded into a bed.

6. The foldable car seat that can be unfolded into a bed according to claim 3, characterized in that: A floor lock assembly (9) that can be flipped open is provided at the bottom end of the folding backrest (4), and a first unlocking component also includes a floor lock unlocking cable (21), one end of the floor lock unlocking cable (21) is connected to the floor lock assembly (9), and the other end is connected to the first unlocking active member (2); the first unlocking active member (2) can drive the floor lock assembly (9) to flip open through the floor lock unlocking cable (21), and when the folding backrest (4) is laid flat to form a bed, the floor lock assembly (9) is fixed to a floor lock buckle (8) arranged on the body carpet (7).

7. The foldable car seat that can be unfolded into a bed according to claim 2, characterized in that: A backrest connection frame torsion spring (26) is provided between the front gear connecting rod (17) and the rear gear connecting rod (24) to provide a return auxiliary force when the folding backrest (4) is folded.

8. The foldable car seat that can be unfolded into a bed according to claim 4, characterized in that: A backrest torsion spring (19) is mounted on the hinged rotating shaft between the seat back (3) and the seat cushion (5); the functions of the backrest torsion spring (19) include: on the one hand, when the first unlocking active member (2) is pulled, the seat back (3) can rebound to a preset initial angle under the action of the backrest torsion spring (19), so as to ensure that the lying flat latch (16) can be inserted into the pin hole of the front gear connecting rod (17), and at the same time ensure that there is enough space behind the seat back (3) when the folding backrest (4) is unfolded; on the other hand, when the folding backrest (4) is folded, a return auxiliary force is provided to the seat back (3).

9. The foldable car seat capable of being unfolded into a bed according to claim 1, characterized in that: The seat cushion (5) is provided with a lifting component at one end close to the seat back (3); when unfolded into a bed, the seat cushion (5) is lifted to be flush with the flattened seat back (3).

10. The foldable car seat capable of being unfolded into a bed according to claim 4, characterized in that: The first unlocking active member (2) is an unlocking pull strap; the second unlocking active member (6) is an unlocking handle.

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