Automobile seat with headrest and backrest folded in linkage mode

Abstract

The automobile seat comprises a base, a backrest framework is rotationally connected to the base, the headrest capable of overturning forwards is connected to the top of the backrest framework, a locking mechanism is arranged in the headrest, and the locking mechanism is used for limiting forward overturning of the headrest relative to the backrest framework; a linkage assembly is arranged on the lower portion of the backrest framework, an inhaul cable is arranged between the linkage assembly and the locking mechanism, and in the process that the backrest framework is turned over forwards relative to the base, the linkage assembly can drive the locking mechanism to be unlocked through the inhaul cable, so that the headrest is turned over forwards synchronously. The device has the beneficial effects that through the arranged linkage assembly, in the process that the seat backrest is put down forwards, the linkage assembly can pull the inhaul cable so that the locking mechanism can be unlocked, then synchronous forward overturning of the headrest is achieved, compared with a traditional mode that an electric actuator is used for operation, the linkage assembly saves the installation space of the electric actuator, and the installation space of the electric actuator is saved. And the whole structure is more compact.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to an automobile seat with a headrest and a backrest capable of being folded in linkage. Background Art

[0002] As one of the important components of a car, an excellent vehicle seat design can also enhance the competitiveness of the car. In the prior art, most of the rear seat backrests have the function of flipping forward. When there are no passengers in the rear row, the backrests can be folded down to make more space in the car for loading items. However, the interior space of some small and medium-sized cars is limited. When the backrests are flipped forward, the seat headrests will interfere with the front seat backrests.

[0003] In order to avoid interference, headrest flipping mechanisms have been introduced on the market. For example, the Chinese invention patent with publication number CN118405042A discloses a headrest folding device for a vehicle seat. A folding device and an unlocking device are integrated inside the seat headrest. The headrest is unlocked by pulling the unlocking device with a cable, and the folding device can be operated to realize automatic flipping of the headrest. The key to realizing automatic flipping of the headrest in this device is to pull the cable. The current operation of the cable is mainly achieved through an electric actuator, but the additional electric actuator makes the overall structure of the seat back very bloated, and the flipping of the headrest and the flipping of the seat back are independent of each other, and the entire deformation process is not coherent. Summary of the invention

[0004] In view of this, the present invention provides a car seat with a headrest and a backrest that can be folded in linkage, so that the headrest can be folded synchronously when the seat backrest is folded forward.

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

[0006] A car seat with a headrest and a backrest that can be folded in a linked manner comprises a base, a backrest frame being rotatably connected to the base, a headrest that can be flipped forward being connected to the top of the backrest frame, and is characterized in that: a locking mechanism is arranged in the headrest, and the locking mechanism is used to limit the headrest from flipping forward relative to the backrest frame; a linkage component is arranged at the lower part of the backrest frame, and a cable is arranged between the linkage component and the locking mechanism, and during the process of the backrest frame being flipped forward relative to the base, the linkage component can drive the locking mechanism to unlock through the cable, so that the headrest can be flipped forward synchronously.

[0007] By adopting the above structure, through the linkage assembly, when the seat back is folded forward, the linkage assembly can pull the cable to unlock the locking mechanism, thereby realizing the synchronous forward flipping of the headrest. Compared with the traditional operation using an electric actuator, the linkage assembly eliminates the installation space of the electric actuator, making the overall structure more compact.

[0008] Preferably, the linkage assembly includes a linkage component and a driving component, wherein the linkage component is rotatably mounted at the lower end of the backrest frame, the driving component is fixedly mounted on the base, and the lower end of the cable is connected to the linkage component; when the backrest frame is flipped forward relative to the base, the linkage component can collide with the driving component, and the linkage component is forced to rotate under the blocking action of the driving component to pull the cable to move. With the above structure, the linkage component is forced to rotate relative to the seat back through the blocking of the driving component, which can drive the cable to move, thereby realizing the synchronous forward flipping of the headrest.

[0009] Preferably, an elastic element is provided between the linkage component and the backrest frame, and after the backrest frame is flipped and lifted backward relative to the base, the elastic element is used to drive the linkage component to reset. With the above structure, the linkage component can be reset by the elastic element, the cable can be reset, and then the headrest can be reset.

[0010] As a preferred embodiment: the linkage component has a trigger section, and a concave arc surface is provided on one side of the trigger section; when the backrest frame is in a sitting position, the end of the trigger section is arranged opposite to the driving component, and during the process of the backrest frame flipping forward and falling down, the driving component can first push the linkage component to rotate, and then maintain sliding contact with the concave arc surface; after the locking mechanism is unlocked, the center of the circle corresponding to the concave arc surface coincides with the rotation center line of the backrest frame. With the above structure, when the driving component contacts the trigger section, it can force the linkage component to rotate relative to the backrest frame, thereby realizing the unlocking and flipping of the headrest. When the center of the concave arc surface of the linkage component coincides with the rotation center of the backrest frame, since the driving component also rotates relative to the rotation center of the backrest frame, the driving component cannot further force the linkage component to rotate, and the linkage component continues to rotate synchronously with the backrest frame, effectively avoiding further pulling on the cable, thereby avoiding the possibility of overtravel of the headrest flipping forward and cable breakage.

[0011] Preferably, when the backrest frame is in a sitting position, there is a distance between the end of the trigger section and the driving component. The above structure can provide an idle travel, thereby ensuring that the car seat back can be adjusted freely within the comfort range without triggering the linkage component to automatically flip the headrest forward.

[0012] Preferably, the headrest is built with an elastic driver, and after the locking mechanism is unlocked, the elastic driver can push the headrest to automatically fold forward. The above structure further ensures that the headrest can automatically flip forward after the cable is pulled and unlocked.

[0013] As a preference: the base is used for fixed installation on the vehicle floor; or the base is a part of the rear end of the seat frame. With the above structure, the seat can be fixedly installed or slidably installed in the interior of the car.

[0014] Preferably, the linkage component is a "C"-shaped plate structure, the middle part of the linkage component is rotatably mounted on the backrest frame, the trigger section is arranged at the lower end of the linkage component, and the cable is fixedly connected to the upper end of the linkage component. The above structure can ensure that when the driving component forces the linkage component to rotate, the center of the concave arc surface will change accordingly.

[0015] Preferably, the driving component is a roller, a mounting seat is fixedly mounted on the base, and the driving component is rotatably mounted on the mounting seat. The above structure further ensures that when the center of the inner concave arc surface coincides with the rotation center of the backrest frame, the driving component cannot further force the linkage component to rotate, and the driving component can also roll on the inner concave arc surface relative to the linkage component.

[0016] As a preferred embodiment, a limiting protrusion is provided inwardly protruding in the middle of the inner circle of the linkage component. With the above structure, the overall turning angle of the backrest frame can be limited.

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

[0018] 1. The automobile seat with a headrest and a backrest that can be folded in a linked manner provided by the present invention can, through the provided linkage assembly, pull the cable when the seat back is folded forward to unlock the locking mechanism, thereby realizing the synchronous forward flipping of the headrest. Compared with the traditional operation using an electric actuator, the linkage assembly saves the installation space of the electric actuator, making the overall structure more compact.

[0019] 2. The installation spacing between the trigger section and the driving component enables the seat back to rotate within the normal comfort adjustment range without pulling the cable; when the trigger section contacts the driving component, the driving component forces the linkage component to rotate relative to the backrest frame, and the rotation of the linkage component can pull the cable to unlock the headrest and synchronously flip forward; when the linkage component rotates relative to the backrest frame until the center of the concave arc surface coincides with the rotation center of the backrest frame, at this time, the driving component cannot force the linkage component to rotate further, and the driving component can move relative to the linkage component on its concave arc surface. The specific surface is that after the linkage component rotates to a certain angle relative to the backrest frame, the linkage component can continue to rotate synchronously with the backrest frame. Such a design can avoid further pulling on the cable, thereby avoiding overload of the headrest's forward flipping stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of a car seat in a normal state;

[0021] Figure 2 This is a schematic diagram of the structure of the headrest 3 in the unlocked and folded state;

[0022] Figure 3 for Figure 1 A partial enlarged schematic diagram of

[0023] Figure 4 It is a structural diagram of the layout position of linkage component A (the mounting column 8 is hidden);

[0024] Figure 5 It is a schematic diagram of the structure in which the driving component 5 forces the linkage component 4 to rotate (the mounting column 8 is hidden);

[0025] Figure 6 This is a structural diagram showing the installation position of the elastic element 9 (the driving component 5 is hidden). DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with embodiments and drawings.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, a car seat with a headrest and a backrest that can be linked and folded comprises a base 1, on which a backrest frame 2 is rotatably mounted, a headrest 3 that can be flipped forward is mounted on the top of the backrest frame 2, a locking mechanism is mounted inside the headrest 3, the locking mechanism is used to flip the headrest 3 forward relative to the backrest frame 2, a linkage component A is mounted on the lower end of the backrest frame 2, a cable 6 is arranged between the linkage component A and the locking mechanism, and during the process of the backrest frame 2 being flipped forward relative to the base 1, the linkage component A can drive the locking mechanism to unlock through the cable 6, so that the headrest 3 can be flipped forward synchronously.

[0028] With such a design, the headrest 3 is synchronously flipped forward by pulling the cable 6 through the linkage component A. Compared with the traditional operation using an electric actuator, the design of the linkage component A saves the installation space of the electric actuator, making the overall structure of the seat more compact.

[0029] Specifically, Figure 3 As shown, the linkage assembly A includes a linkage component 4 and a driving component 5. The linkage component 4 is rotatably installed at the lower end of the backrest frame 2, and the driving component 5 is fixedly installed on the base 1. The lower end of the cable 6 is connected to the linkage component 4. When the backrest frame 2 is flipped forward and laid down relative to the base 1, the linkage component 4 can collide with the driving component 5 and be forced to rotate under the blocking action of the driving component 5, thereby pulling the cable 6 to move.

[0030] Further, such as Figure 4 As shown, the linkage component 4 has a trigger section 4a, and a concave arc surface 4b is arranged on one side of the trigger section 4a. When the backrest frame 2 is in a sitting state, the end of the trigger section 4a is arranged opposite to the driving component 5. During the process of the backrest frame 2 being flipped forward and laid down, the driving component 5 can first push the linkage component 4 to rotate, and then maintain sliding contact with the concave arc surface 4b. After the locking mechanism is unlocked, the center of the circle corresponding to the concave arc surface 4b coincides with the rotation center line of the backrest frame 2.

[0031] With such a design, when the end of the trigger section 4a contacts the driving component 5, the driving component 5 can force the linkage component 4 to rotate relative to the backrest frame 2. During the rotation of the linkage component 4, the cable 6 can be pulled, thereby realizing the unlocking of the headrest 3 and the synchronous forward rotation relative to the backrest frame 2. Since the driving component 5 is fixedly mounted on the base 1, during the process of the backrest frame 2 flipping forward relative to the base 1, the driving component 5 can be regarded as rotating on the backrest frame 2 with the rotation center of the backrest frame 2 as the origin. When the driving component 5 forces the linkage component 4 to rotate to the moving angle, the center of the circle corresponding to the concave arc surface 4b coincides with the rotation center line of the backrest frame 2. At this time, the driving component 5 cannot further force the linkage component 4 to rotate, but slides on its concave arc surface 4b relative to the linkage component 4. Specifically, after the linkage component 4 rotates to a certain angle relative to the backrest frame 2, it continues to rotate synchronously with the backrest frame 2. Such a design avoids the cable 6 from being further pulled, thereby ensuring that the headrest 3 will not over-travel when flipping forward, and avoids the cable 6 from being torn off.

[0032] Furthermore, in this embodiment, when the backrest frame 2 is in a sitting position, there is a distance between the end of the trigger section 4a and the driving component 5. This design can provide an idle travel before the headrest 3 is unlocked, thereby satisfying the arbitrary adjustment of the seat back within the comfort range.

[0033] like Figure 3 and Figure 6 As shown, a mounting column 8 extending in the width direction of the automobile seat is fixedly mounted on the backrest frame 2, the linkage component 4 is rotatably mounted on the mounting column 8, and an elastic element 9 is also mounted on the mounting column 8, and the elastic element 9 is arranged between the backrest frame 2 and the linkage component 4. In this embodiment, the elastic element 9 is preferably a torsion spring, and when the backrest frame 2 is flipped and lifted backward relative to the base 1, and the linkage component 4 and the driving component 5 are separated, the linkage component 4 can be reset under the elastic action of the torsion spring, thereby resetting the cable 6.

[0034] like Figure 4 and Figure 5As shown, in this embodiment, the linkage component 4 is a "C"-shaped plate-like structure, the middle part of the linkage component 4 is rotatably mounted on the mounting column 8, the trigger section 4a is arranged at the lower end of the linkage component 4, the end of the cable 6 is fixedly connected to the upper end of the linkage component 4, and the concave arc surface 4b is formed on the inner circle of the linkage component 4. With such a design, when the driving component 5 forces the linkage component 4 to rotate relative to the backrest frame 2, the center of the concave arc surface 4b can change and finally coincide with the rotation center line of the backrest frame 2.

[0035] like Figure 4 As shown, a limiting protrusion 4c is also protruded in the middle position of the inner circle of the linkage component 4. When the driving component 5 rotates relative to the linkage component 4 until it contacts the limiting protrusion 4c, the limiting protrusion 4c can prevent the driving component 5 from continuing to rotate, which makes the backrest frame 2 unable to flip forward further, thereby limiting the flipping angle of the backrest frame 2.

[0036] In this embodiment, the driving component 5 is a roller, and a mounting seat 7 is fixed on the base 1 by bolts. The driving component 5 is rotatably mounted on the mounting seat 7. With such a design, when the driving component 5 maintains sliding contact with the concave arc surface 4b, the rotatable installation design can effectively reduce the resistance between the driving component 5 and the concave arc surface 4b, further preventing the linkage component 4 from rotating again.

[0037] In this embodiment, an elastic driver is arranged inside the headrest 3. After the locking mechanism is unlocked, the elastic driver can push the headrest to automatically fold forward. Since unlocking the elastic driver by the unlocking structure to realize automatic flipping of the headrest 3 belongs to the prior art, it will not be elaborated in detail in this embodiment.

[0038] In this embodiment, the base 1 can be fixedly installed on the vehicle floor. At this time, the rear seats of the car are fixedly installed. In addition, the base 1 can also be a part of the rear end of the seat frame. By integrating a slide rail at the lower end of the seat frame, the car seat can be moved or rotated.

[0039] 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 with a headrest and a backrest that can be folded in a linked manner, comprising a base (1), a backrest frame (2) being rotatably connected to the base (1), a headrest (3) that can be flipped forward being connected to the top of the backrest frame (2), characterized in that: A locking mechanism is provided in the headrest (3), and the locking mechanism is used to limit the headrest (3) from flipping forward relative to the backrest frame (2); A linkage component (A) is provided at the lower part of the backrest frame (2), and a cable (6) is provided between the linkage component (A) and the locking mechanism. When the backrest frame (2) is flipped forward relative to the base (1) and laid down, the linkage component (A) can drive the locking mechanism to unlock through the cable (6), so that the headrest (3) can be flipped forward synchronously.

2. The automobile seat with a headrest and a backrest that can be folded in a linked manner according to claim 1, characterized in that: The linkage assembly (A) comprises a linkage component (4) and a driving component (5), wherein the linkage component (4) is rotatably mounted on the lower end of the backrest frame (2), the driving component (5) is fixedly mounted on the base (1), and the lower end of the cable (6) is connected to the linkage component (4); When the backrest frame (2) is flipped forward relative to the base (1) and laid down, the linkage component (4) can collide with the driving component (5) and force the linkage component (4) to rotate under the blocking action of the driving component (5) to pull the cable (6) to move.

3. The automobile seat with a headrest and a backrest that can be folded in a linked manner according to claim 2, characterized in that: An elastic element (9) is provided between the linkage component (4) and the backrest frame (2); after the backrest frame (2) is flipped and lifted backward relative to the base (1), the elastic element (9) is used to drive the linkage component (4) to return to its original position.

4. The automobile seat with a headrest and a backrest that can be folded in tandem according to claim 2, characterized in that: The linkage component (4) has a trigger section (4a), and a concave arc surface (4b) is provided on one side of the trigger section (4a); when the backrest frame (2) is in a sitting state, the end of the trigger section (4a) is arranged opposite to the driving component (5), and when the backrest frame (2) is turned over and laid down forward, the driving component (5) can first push the linkage component (4) to rotate, and then maintain sliding contact with the concave arc surface (4b); After the locking mechanism is unlocked, the center of the circle corresponding to the concave arc surface (4b) coincides with the rotation center line of the backrest frame (2).

5. The automobile seat with a headrest and a backrest that can be folded in tandem according to claim 4, characterized in that: When the backrest frame (2) is in a sitting position, there is a distance between the end of the trigger section (4a) and the drive component (5).

6. The automobile seat with a headrest and a backrest that can be folded in tandem according to claim 1, characterized in that: The headrest (3) is internally provided with an elastic driver, and after the locking mechanism is unlocked, the elastic driver can push the headrest to automatically fold forward.

7. The automobile seat with a headrest and a backrest that can be folded in tandem according to claim 1, characterized in that: The base (1) is used for fixed installation on the floor of the vehicle; Alternatively, the base (1) is a part of the rear end of the seat frame.

8. The automobile seat with a headrest and a backrest that can be folded in tandem according to claim 4, characterized in that: The linkage component (4) is a "C"-shaped plate-like structure. The middle part of the linkage component (4) is rotatably mounted on the backrest frame (2). The trigger section (4a) is arranged at the lower end of the linkage component (4). The pull cable (6) is fixedly connected to the upper end of the linkage component (4).

9. The automobile seat with a headrest and a backrest that can be folded in tandem according to claim 4, characterized in that: The driving component (5) is a roller, a mounting seat (7) is fixedly mounted on the base (1), and the driving component (5) is rotatably mounted on the mounting seat (7).

10. The automobile seat with a headrest and a backrest that can be folded in tandem according to claim 8, characterized in that: A limiting protrusion (4c) protruding inwards is provided in the middle of the inner ring of the linkage component (4).

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