Seat frame assembly, seat and vehicle

Abstract

The present disclosure relates to a seat framework assembly, a seat and a vehicle, the seat framework assembly comprising a backrest framework; the backrest framework comprises a first frame body and a second frame body, the second frame body is located at the back of the first frame body; the backrest framework is provided with an unfolded state and a folded state, and the second frame body is arranged to be capable of rotating relative to the first frame body, so that the backrest framework can be switched between the unfolded state and the folded state. The seat framework assembly is provided with the first frame body and the second frame body, so that the first frame body serves as the main backrest of the seat and is used for supporting the back of the user in a sitting posture, and the second frame body serves as an extension structure and can be unfolded and connected with the first frame body in a head-to-tail manner to form a plane, so that the length can be increased, the length of the entire backrest framework can be increased after the backrest framework is laid down, and thus a bed structure can be formed, thereby meeting the needs of the user for changing the seat into a bed in a scene.

Description

Technical Field

[0001] This disclosure relates to the field of seating technology, and more particularly to a seat frame assembly, a seat, and a vehicle. Background Technology

[0002] In related technologies, the backrest of the chair is not long enough when folded down to meet the user's need to turn it into a bed, which affects the user experience. Utility Model Content

[0003] The purpose of this disclosure is to provide a seat frame assembly, a seat, and a vehicle to solve the problems in the aforementioned related technologies.

[0004] To achieve the above objectives, one aspect of this disclosure provides a seat frame assembly, including a backrest frame; The backrest frame includes a first frame and a second frame, with the second frame located behind the first frame; The backrest frame is provided with an unfolded state and a folded state, and the second frame is configured to rotate relative to the first frame so that the backrest frame can switch between the unfolded state and the folded state. In the unfolded state, the first frame and the second frame are unfolded into a single plane; in the folded state, the first frame and the second frame are in face-to-face contact.

[0005] Optionally, the backrest frame further includes a locking mechanism connected to the first frame and the second frame, the locking mechanism being configured to lock the second frame so that the backrest frame remains in the folded state.

[0006] Optionally, the locking mechanism includes a locking hook and a mating component, one of which is connected to the first frame and the other is connected to the second frame.

[0007] Optionally, the backrest frame further includes a support member connected to the second frame. In the unfolded state, the support member supports the second frame so that the first frame and the second frame are on the same plane.

[0008] Optionally, the support member is rotatably connected to the second frame, and the support member is provided with an unfolded position and a retracted position. The unfolded position is in which the support member is unfolded and set at an angle to the second frame, and the retracted position is in which the support member is retracted and fits against the second frame. In the unfolded state, the support member is in the unfolded position; in the folded state, the support member is in the retracted position.

[0009] Optionally, the backrest frame further includes a drive unit, which is connected to the second frame and the support member respectively, and the drive unit is used to drive the support member to switch between the unfolded position and the retracted position; Wherein, when the support member switches from the retracted position to the deployed position, the support member is configured to push the second frame to rotate in a direction away from the first frame.

[0010] Optionally, the backrest frame further includes a slider connected to the support member, the slider being used to contact the first frame to push the second frame to rotate away from the first frame.

[0011] Optionally, the seat frame assembly further includes a seat cushion frame, and the backrest frame is configured to rotate relative to the seat cushion frame; The seat frame assembly is provided with a first state and a second state. The backrest frame has an upright position and a reclining position. In the first state, the backrest frame is in the folded state and in the upright position. In the second state, the backrest frame is in the unfolded state and in the reclining position.

[0012] Optionally, the first frame has a first end and a second end disposed opposite to each other, the first end of the first frame is hinged to the seat cushion frame, and the second end of the first frame is hinged to one end of the second frame.

[0013] Optionally, the seat frame includes a seat basin and a base frame, the seat basin is disposed above the base frame, the seat basin is configured to move relative to the base frame, and the first frame is rotatably connected to the base frame.

[0014] Optionally, the seat frame assembly further includes a linkage mechanism; The linkage mechanism is connected to the first frame and the seat respectively, and the seat moves with the first frame through the linkage mechanism; The seat has a raised position and a lowered position. In the first state, the seat is in the lowered position and is angled to the first frame. In the second state, the seat is in the raised position and is on the same plane as the first frame.

[0015] Optionally, the linkage mechanism includes a first connector, the first end of which is hinged to the first frame, and the second end of which is hinged to the seat.

[0016] Optionally, the first frame is rotatably disposed relative to the base frame about a first axis, and the first end of the first connector is rotatably disposed relative to the first frame about a second axis, wherein the first axis coincides with the second axis.

[0017] Optionally, the linkage mechanism further includes a pushing part, which is connected to the first frame and is configured to push the first connecting member to raise the seat. The backrest frame is provided with a first rotation stroke and a second rotation stroke. During the first rotation stroke, the pushing part is spaced apart from the first connecting member, and the backrest frame is in the folded state. During the second rotation stroke, the pushing part contacts the first connecting member, and the backrest frame is in the unfolded state.

[0018] Optionally, the first connector is provided with a clearance portion, which can avoid the pushing portion during the first rotation stroke and contact the pushing portion during the second rotation stroke.

[0019] Optionally, the seat frame assembly further includes a rotating mechanism, wherein the first frame is rotatably connected to the base frame via the rotating mechanism, and the first axis is set as the rotation axis of the rotating mechanism.

[0020] Optionally, the seat frame assembly further includes a side plate, the rotating mechanism is connected to the side plate, and the side plate is connected to the base frame.

[0021] Optionally, the first end of the first connector is rotatably connected to the first frame via a first shaft, and the second shaft is set as the axis of the first shaft.

[0022] Optionally, the seat frame further includes a second connector, the two ends of which are respectively hinged to the seat basin and the base frame.

[0023] Optionally, in the longitudinal direction of the vehicle, the two ends of the second connector are respectively hinged to the front end of the seat basin and the front end of the chassis, and the second end of the first connector is connected to the rear end of the seat basin. In the height direction of the vehicle, the first end of the first connector is connected to the bottom end of the first frame.

[0024] Optionally, the seat frame assembly further includes a locking mechanism connected to the base frame, the locking mechanism being configured to lock the seat basin under preset conditions.

[0025] Optionally, the locking mechanism includes a locking member movably connected to the base frame; The seat includes a body and a locking member. The locking member is connected to the body, and the locking member is provided with a hook groove, through which the locking member can be connected to the locking member.

[0026] Optionally, in the height direction of the vehicle, the locking member has a first end and a second end disposed opposite to each other, the first end of the locking member is hinged to the underframe, and the second end of the locking member is connected to or separated from the latching member; The preset condition is set to cause a vehicle collision, and the locking component is configured to swing in the forward / backward or left / right direction of the vehicle.

[0027] Optionally, the locking mechanism further includes an elastic element, the two ends of which are connected to the locking member and the base frame, respectively. The elastic element is used to drive the locking member to move toward the rear end of the vehicle.

[0028] A second aspect of this disclosure also provides a seat, including a first backrest cushion, a second backrest cushion, and the aforementioned seat frame assembly; The first backrest cushion is connected to the first frame, and the second backrest cushion is connected to the second frame.

[0029] A third aspect of this disclosure also provides a vehicle including the aforementioned seat frame assembly, or including the aforementioned seat.

[0030] The above technical solution, through the setting of a first frame and a second frame, allows the first frame to serve as the main backrest of the chair. The front of the first frame is used to support the user and support the back when the user is sitting, ensuring that the chair will not cause discomfort when the user is sitting. The second frame, as an extension structure, can be unfolded and spliced ​​with the first frame end to end to form a plane, which can increase the length. After the backrest frame is folded down, the length of the entire backrest frame can be increased, thereby forming a bed structure to meet the user's need for the scenario of turning the chair into a bed.

[0031] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of a seat frame assembly in a folded state according to one embodiment of the present disclosure.

[0033] Figure 2 This is a schematic diagram of the structure of a seat frame assembly according to one embodiment of the present disclosure, showing the transition from a folded state to an unfolded state.

[0034] Figure 3 This is a schematic diagram of the backrest frame according to one embodiment of the present disclosure.

[0035] Figure 4 This is a structural schematic diagram of a state of the second frame according to an embodiment of the present disclosure.

[0036] Figure 5 This is a schematic diagram of another state of the second frame according to one embodiment of the present disclosure.

[0037] Figure 6 This is a schematic diagram of the structure of a seat cushion frame according to one embodiment of the present disclosure.

[0038] Figure 7 This is a schematic diagram of the linkage mechanism and locking mechanism according to one embodiment of the present disclosure.

[0039] Explanation of reference numerals in the attached figures 1. Seat cushion frame; 11. Seat basin; 111. Body; 112. Snap-in part; 12. Base frame; 13. Second connecting part; 2. Backrest frame; 21. First frame; 22. Second frame; 23. Locking mechanism; 231. Locking hook; 232. Mating part; 24. Supporting part; 25. Driving part; 26. Sliding part. 3. Locking mechanism; 31. Locking element; 32. Hook groove; 33. Elastic element; 4. Linkage mechanism; 41. First connecting part; 42. Pushing part; 43. Clearing part; 44. First shaft; 5. Rotating mechanism; 6. Side panels; 71. First axis; 72. Second axis. Detailed Implementation

[0040] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0041] In this disclosure, unless otherwise stated, directional terms such as "front," "rear," "up," "down," "left," and "right" are generally defined in the context of vehicle operation, and "inner" and "outer" refer to the inner and outer parts of the relevant components. Furthermore, terms such as "first" and "second" are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0042] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0043] To meet the needs of different scenarios, seats need more and more functions, such as being able to recline, which requires the seat to be able to be adjusted and moved to different positions.

[0044] In related technologies, the length of seat backs after folding down is insufficient to meet users' needs for turning the seat back into a bed, thus affecting user experience. For example, the combined length of a vehicle seat back and seat cushion after folding down is generally no more than 1.5m, which is not enough to be used as a bed. Additional structures are needed to form a bed structure, which is very inconvenient to use.

[0045] Therefore, such as Figures 1-7 As shown, one aspect of this disclosure provides a seat frame assembly, including a backrest frame 2.

[0046] The backrest frame 2 includes a first frame 21 and a second frame 22, with the second frame 22 located on the back of the first frame 21.

[0047] The backrest frame 2 is provided with an unfolded state and a folded state. The second frame 22 is configured to be able to rotate relative to the first frame 21 so that the backrest frame 2 can switch between the unfolded state and the folded state.

[0048] In the unfolded state, the first frame 21 and the second frame 22 unfold to form a single plane; in the folded state, the first frame 21 and the second frame 22 are in face-to-face contact. It can be understood that during the rotation of the second frame 22, the backrest frame 2 switches between the unfolded and folded states. That is, the second frame 22 can change from being face-to-face with the first frame 21 to unfolding to form a single plane with the first frame 21, or it can change from unfolding to forming a single plane with the first frame 21 to being face-to-face contact with the first frame 21. It should be noted that "the first frame 21 and the second frame 22 unfolding to form a single plane" means that the second frame 22 rotates to a position 180 degrees from the first frame 21. "The first frame 21 and the second frame 22 being face-to-face contact" means that the second frame 22 rotates until it is flush against one side of the first frame 21, with both surfaces facing each other.

[0049] The above technical solution, through the setting of the first frame 21 and the second frame 22, makes the first frame 21 serve as the main backrest of the seat. The front of the first frame 21 is used to support the user and support the back when the user is sitting, ensuring that the seat will not cause discomfort when the user is sitting. The second frame 22 serves as an extension structure, which can be unfolded and spliced ​​with the first frame 21 end to end to form a plane, thereby increasing the length. After the backrest frame 2 is folded down, the length of the entire backrest frame 2 is increased, thus forming a bed structure to meet the user's need for the scenario of turning the seat into a bed.

[0050] Optionally, in one embodiment of this disclosure, the backrest frame 2 further includes a locking mechanism 23. The locking mechanism 23 is connected to the first frame 21 and the second frame 22. The locking mechanism 23 is configured to lock the second frame 22, so that the backrest frame 2 remains in a folded state. The locking mechanism 23 locks the second frame 22, preventing it from rotating freely relative to the first frame 21. After unlocking, the second frame 22 can rotate relative to the first frame 21, ensuring normal use of the seat. It is understood that when the locking mechanism 23 is locked, the backrest frame 2 remains in a folded state, meaning that the first frame 21 and the second frame 22 are in face-to-face contact. When the locking mechanism 23 is unlocked, the second frame 22 can rotate relative to the first frame 21, causing the backrest frame 2 to change to an unfolded state.

[0051] Optionally, in one embodiment of this disclosure, the locking mechanism 23 includes a locking hook 231 and a mating member 232. One of the locking hook 231 and the mating member 232 is connected to the first frame 21, and the other is connected to the second frame 22. Locking is achieved by engaging the mating member 232 with the locking hook 231, and unlocking is achieved by disengaging the mating member 232 from the locking hook 231. In some examples, the locking hook 231 is provided on the second frame 22, and the mating member 232 is provided on the first frame 21. The mating member 232 can be a metal rod. Optionally, the mating member 232 can be located on the back of the first frame 21, and the locking hook 231 can be located on the side of the second frame 22 facing the first frame 21 in the folded state. This achieves a concealed design, ensuring that the locking hook 231 and the mating member 232 are not exposed, thus maintaining aesthetics.

[0052] Optionally, in one embodiment of this disclosure, the backrest frame 2 further includes a support member 24 connected to the second frame 22. In the unfolded state, the support member 24 supports the second frame 22, ensuring that the first frame 21 and the second frame 22 are on the same plane. The support member provides support for the second frame 22, ensuring its stability. In other words, after the second frame 22 is unfolded, the support member 24 is positioned below it, supporting the second frame 22 to maintain it on the same plane as the first frame 21, ensuring a perfectly flat surface for both frames and improving the user experience.

[0053] Optionally, in one embodiment of this disclosure, the support member 24 is rotatably connected to the second frame 22. The support member 24 is provided with an unfolded position and a retracted position. In the unfolded position, the support member 24 is unfolded and angled towards the second frame 22. In the retracted position, the support member 24 is retracted and fits against the second frame 22. With this arrangement, when the second frame 22 is in use, the support member 24 can be rotated and unfolded to support the second frame 22, and when the second frame 22 is not in use, the support member 24 can be retracted, without occupying too much space and without affecting the aesthetics of the seat.

[0054] In this context, the "expanded position" refers to the support member 24 rotating at a certain angle relative to the second frame 22, where it provides support to the second frame 22 and can contact the vehicle's inner floor panel. The "retracted position" refers to the support member 24 rotating relative to the second frame 22 until it is flush with its surface; in this position, it does not contact the vehicle's inner floor panel and does not provide support. In the following example, one side of the second frame 22 can also be provided with a receiving groove, allowing the support member 24 to rotate and retract into the groove, further reducing space requirements.

[0055] In the unfolded state, the support member 24 is in the unfolded position; in the folded state, the support member 24 is in the retracted position. It can be understood that when the first frame 21 and the second frame 22 are unfolded into a single plane, the support member 24 also unfolds simultaneously, supporting the second frame 22. When the second frame 22 rotates to contact the surface of the first frame 21, the support member 24 retracts into the second frame 22, at which point it no longer supports the second frame 22. In some examples, one end of the support member 24 is connected to the second frame 22 via a pivot.

[0056] Optionally, in another embodiment of this disclosure, the support member 24 is slidably extended or retracted from the second frame 22. The support member 24 is capable of sliding relative to the second frame 22, and can slide out or retract from the second frame 22. It is understood that when the second frame 22 is in use, the support member 24 slides out of the second frame 22 to provide support; when the second frame 22 is not in use, the support member 24 retracts into the second frame 22.

[0057] Optionally, in one embodiment of this disclosure, the backrest frame 2 further includes a drive member 25, which is connected to the second frame 22 and the support member 24 respectively. The drive member 25 is used to drive the support member 24 to switch between an unfolded position and a retracted position. By using the drive member 25 to drive the support member 24 to move, automatic unfolding and retraction can be achieved, making operation more convenient and eliminating the need for manual operation.

[0058] Optionally, in the folded state, the support member 24 is located between the first frame 21 and the second frame 22. When the support member 24 switches from the retracted position to the unfolded position, the support member 24 is configured to push the second frame 22 to rotate away from the first frame 21. It is understood that when the support member 24 switches from the retracted position to the unfolded position, the support member 24 unfolds, contacts and pushes against the first frame 21, thereby generating a reaction force on the support member 24 and the second frame 22. This pushes the second frame 22 to rotate away from the first frame 21, that is, to switch to the unfolded state, which can accelerate the speed at which the second frame 22 switches from the folded state to the unfolded state.

[0059] In some examples, the drive element 25 can be a torsion spring, which is used to push the support element 24 from the retracted position to the unfolded position. It is understood that in the retracted position, the support element 24 is clamped between the first frame 21 and the second frame 22. At this time, the torsion spring is in a compressed state. The torsion spring can be equipped with a lock to lock the support element 24, and a transmission element can be used to achieve unlocking. When unlocked, the torsion spring rebounds, driving the support element 24 to rotate, switching from the retracted position to the unfolded position. The transmission element can be linked to the rotation angle of the entire backrest frame 2. That is, when the second frame 22 needs to be used, when the second frame 22 switches from the folded state to the unfolded state, the transmission element drives the torsion spring to unlock, and the torsion spring can drive the support element 24 to switch from the retracted position to the unfolded position. The two can occur simultaneously. Conversely, when the second frame 22 is not needed, when the second frame 22 switches from the unfolded state to the folded state, the support member 24 can be pushed to fit against the second frame 22 as the second frame 22 cooperates with the first frame 21.

[0060] In some examples, the first frame 21 has a first rotational stroke and a second rotational stroke. During the first rotational stroke, the first frame 21 is suitable for small-angle adjustment, at which time the second frame 22 and the support member 24 are not unfolded. During the second rotational stroke, the first frame 21 is suitable for folding down, at which time the second frame 22 needs to be used, and the support member 24 unfolds to form a bed structure.

[0061] Optionally, in one embodiment of this disclosure, the backrest frame 2 further includes a slider 26 connected to the support member 24. The slider 26 is used to contact the first frame 21 to push the second frame 22 to rotate away from the first frame 21. By contacting the first frame 21, the slider 26 can slide relative to the first frame 21. Thus, when the second frame 22 rotates away from the first frame 21, the slider 26 can maintain contact with the first frame 21, generating a pushing force that facilitates the rotation and unfolding of the second frame 22. In some examples, the slider 26 may be a pulley or a roller.

[0062] Optionally, in one embodiment of this disclosure, the seat frame assembly further includes a seat cushion frame 1, and the backrest frame 2 is configured to rotate relative to the seat cushion frame 1.

[0063] The backrest frame 2 can rotate relative to the seat cushion frame 1, so that the angle of the backrest frame 2 relative to the seat cushion frame 1 can be adjusted to meet different needs. At the same time, the backrest frame 2 can also be laid down, allowing the user to lie down.

[0064] The seat frame assembly has a first state and a second state. The backrest frame 2 has an upright position and a reclining position. In the first state, the backrest frame 2 is folded and upright. In the second state, the backrest frame 2 is unfolded and reclining. It can be understood that the first state is the normal sitting position, where the user is in a seated posture. The second state is the reclining position, where the user is in a reclining posture, which can meet the needs of different scenarios.

[0065] Optionally, in one embodiment of this disclosure, the first frame 21 has a first end and a second end disposed opposite to each other. The first end of the first frame 21 is hinged to the seat cushion frame 1, and the second end of the first frame 21 is hinged to one end of the second frame 22. This arrangement allows the seat cushion frame 1, the first frame 21, and the second frame 22 to be connected end-to-end in sequence to form a planar bed structure, ensuring that the length of the formed bed structure is sufficiently long to meet the user's need to lie down. In some examples, the first end of the first frame 21 is the bottom end, the second end of the first frame 21 is the top end, the top end of the second frame 22 is hinged to the top end of the first frame 21, and the locking mechanism 23 is located at the first end of the first frame 21 and the bottom end of the second frame 22.

[0066] Optionally, in one embodiment of this disclosure, the seat frame 1 includes a seat basin 11 and a base frame 12. The seat basin 11 is disposed above the base frame 12 and is configured to move relative to the base frame 12. The first frame 21 is rotatably connected to the base frame 12.

[0067] The base frame 12 is used for installation and positioning, and the basin 11 can move relative to the base frame 12, allowing for position adjustment of the basin 11 to meet the needs of different scenarios. It should be noted that the movement of the basin 11 relative to the base frame 12 can be set according to the requirements of the application scenario, and no further restrictions are imposed here. In some examples, the basin 11 can rotate relative to the base frame 12, enabling it to be raised or lowered. In other examples, the basin 11 can slide relative to the base frame 12, enabling it to be raised or lowered.

[0068] Optionally, in one embodiment of this disclosure, the seat frame assembly further includes a linkage mechanism 4.

[0069] The linkage mechanism 4 is connected to the first frame 21 and the seat 11 respectively, and the seat 11 moves with the first frame 21 through the linkage mechanism 4.

[0070] The seat 11 is provided with a raised position and a lowered position. In the first state, the seat 11 is in the lowered position and is set at an angle to the first frame 21. In the second state, the seat 11 is in the raised position and is on the same plane as the first frame 21.

[0071] Through the linkage mechanism 4, a transmission action is generated, enabling the seat basin 11 to move synchronously with the first frame 21. This allows the tilt angle of the seat basin 11 to change. When the first frame 21 is reclined, the seat basin 11 rotates relative to the base frame 12, achieving at least partial lifting. At this time, the seat basin 11 and the first frame 21 are on the same plane, forming a flat structure, which is conducive to the user lying down, improving the user experience and reducing user discomfort. When the first frame 21 moves towards an upright position, the seat basin 11 rotates relative to the base frame 12, achieving at least partial lowering. At this time, the seat basin 11 is at an angle to the first frame 21, and the seat basin 11 is tilted downwards, which is conducive to the user sitting between the seat basin 11 and the first frame 21, maintaining stability. This seat frame assembly can be adjusted into a flat structure according to the needs of the application scenario, making it easy for the user to lie down and improving comfort. Moreover, the seat basin 11 is driven by the movement of the first frame 21, eliminating the need for additional motors or other structures for driving, reducing costs, and making operation very convenient, while also reducing the failure rate.

[0072] Optionally, in one embodiment of this disclosure, the linkage mechanism 4 includes a first connecting member 41. The first end of the first connecting member 41 is hinged to the first frame 21, and the second end of the first connecting member 41 is hinged to the seat basin 11. This arrangement allows the first connecting member 41 to rotate relative to the first frame 21 and the seat basin 11 without interfering with the rotation of the first frame 21, while simultaneously enabling the seat basin 11 to move. It is understood that when the first frame 21 rotates, a force is generated to the first connecting member 41, which then transmits the force to the seat basin 11. As the first frame 21 continues to rotate, the first connecting member 41 also rotates relative to the first frame 21 and the seat basin 11.

[0073] Optionally, in one embodiment of this disclosure, the first frame 21 is rotatably disposed relative to the base frame 12 about a first axis 71, and the first end of the first connector 41 is rotatably disposed relative to the first frame 21 about a second axis 72, with the first axis 71 and the second axis 72 coinciding.

[0074] The first axis 71 coincides with the second axis 72, meaning that the first frame 21 and the first end of the first connector 41 are coaxially rotatable. This allows the first connector 41 to move with the first frame 21 and achieve rotation of the first connector 41.

[0075] Optionally, in one embodiment of this disclosure, the linkage mechanism 4 further includes a pushing part 42 connected to the first frame 21. The pushing part 42 is configured to push the first connecting member 41 to raise the seat 11. By pushing the first connecting member 41 through the pushing part 42, when the first frame 21 is lowered, the first connecting member 41 drives the seat 11 to rise, thereby raising the seat 11 to a specified height. After the first frame 21 is fully lowered, the seat 11 can be on the same plane as the first frame 21.

[0076] The backrest frame 2 has a first rotation stroke and a second rotation stroke. During the first rotation stroke, the pushing part 42 and the first connecting member 41 are spaced apart, and the backrest frame 2 is in a folded state. During the second rotation stroke, the pushing part 42 contacts the first connecting member 41, and the backrest frame 2 is in an unfolded state. This configuration allows the backrest frame 2 to have two rotation angle settings: the first rotation stroke allows for a small angle of movement, suitable for adjusting the tilt angle of the backrest frame 2; the second rotation stroke allows for a large angle of movement, suitable for folding down the backrest frame 2.

[0077] During the first rotation stroke of the backrest frame 2, the pushing part 42 does not contact the first connecting member 41. This means that the pushing part 42 does not exert a pushing effect on the first connecting member 41 at this time. Therefore, when the backrest frame 2 rotates, the seat basin 11 does not move accordingly, and it does not need to be raised or lowered. Simultaneously, the first frame 21 and the second frame 22 remain in a folded state, and only the tilt angle of the backrest frame 2 is adjusted. During the second rotation stroke of the backrest frame 2, the first connecting member 41 and the pushing part 42 come into contact. When the backrest frame 2 is folded down, the pushing part 42 exerts a pushing effect on the first connecting member 41, allowing the seat basin 11 to move accordingly and be raised. Simultaneously, the first frame 21 and the second frame 22 switch from a folded state to an unfolded state. When the backrest frame 2 moves to the upright position, although the push part 42 is in contact with the first connector 41, the push part 42 does not push the first connector 41. Instead, the first connector 41 pulls the seat basin 11 down to return to its original position. At the same time, the first frame 21 and the second frame 22 switch from the unfolded state to the folded state, thereby meeting the needs of the seat frame assembly in different scenarios.

[0078] Optionally, in one embodiment of this disclosure, the first connecting member 41 is provided with a clearance portion 43. During the first rotational stroke, the clearance portion 43 can avoid the pushing portion 42, and during the second rotational stroke, the clearance portion 43 contacts the pushing portion 42. By providing the clearance portion 43, the pushing portion 42 can be avoided during the first rotational stroke, thereby ensuring small-angle adjustment of the backrest frame 2. When the pushing portion 42 needs to push against the first connecting member 41, it can contact the clearance portion 43. In other words, the clearance space of the clearance portion 43 can be set according to the range of small-angle adjustment of the backrest frame 2. In some examples, the clearance portion 43 is configured as a concave structure of the first connecting member 41 away from the pushing portion 42, thereby producing a clearance effect.

[0079] Optionally, in another embodiment of this disclosure, the first frame 21 is rotatably disposed relative to the base frame 12 about a first axis 71, and the first end of the first connector 41 is rotatably disposed relative to the first frame 21 about a second axis 72, wherein the first axis 71 and the second axis 72 do not coincide. With this arrangement, the first connector 41 can also move with the rotation of the first frame 21, in which case the rotation of the first frame 21 will drive the seat 11 to move. In some examples, the second axis 72 can be close to the first axis 71, and the first connector 41 can also be configured to be telescopic.

[0080] Optionally, in one embodiment of this disclosure, there may be two linkage mechanisms 4, which are arranged in parallel.

[0081] Optionally, in one embodiment of this disclosure, the seat frame assembly further includes a rotating mechanism 5. The first frame 21 is rotatably connected to the base frame 12 via the rotating mechanism 5, and the first axis 71 is set as the rotation axis of the rotating mechanism 5. This arrangement facilitates the rotation of the first frame 21 relative to the base frame 12. The first frame 21 is connected to the rotating mechanism 5, and under the rotational action of the rotating mechanism 5, the first frame 21 can rotate relative to the base frame 12. In some examples, the rotating mechanism 5 may be an adjuster.

[0082] Optionally, in one embodiment of this disclosure, the seat frame assembly further includes a side plate 6, a rotating mechanism 5 connected to the side plate 6, and the side plate 6 connected to the base frame 12. The side plate 6 facilitates the connection between the rotating mechanism 5 and the base frame 12. The side plate 6 supports and fixes the rotating mechanism 5. There may be two rotating mechanisms 5 and two side plates 6, located on the left and right sides of the first frame 21 and the left and right sides of the base frame 12, respectively.

[0083] Optionally, in one embodiment of this disclosure, the first end of the first connector 41 is rotatably connected to the first frame 21 via a first shaft 44, and the second axis 72 is set as the axis of the first shaft 44. This arrangement facilitates the rotation of the first connector 41 relative to the first frame 21.

[0084] Optionally, the second end of the first connecting member 41 is rotatably connected to the seat 11 via a second shaft. In some examples, the first connecting member 41 may be a plate or a rod. In some examples, the first shaft 44 may be a separate structure, not connected to the rotating mechanism 5. In other examples, the first shaft 44 may also be a shaft on the rotating mechanism 5.

[0085] Optionally, in one embodiment of this disclosure, the seat frame 1 further includes a second connector 13, the two ends of which are hinged to the seat basin 11 and the base frame 12, respectively. The second connector 13 allows the seat basin 11 to rotate relative to the base frame 12, enabling the seat basin 11 to rise or fall. Simultaneously, the second connector 13 increases the distance between the seat basin 11 and the base frame 12, increasing the degree to which the seat basin 11 can rise or fall relative to the base frame 12. Furthermore, during the rising process, the seat basin 11 can move away from the first frame 21, increasing the overall length of the seat basin 11 after it and the first frame 21 are on the same plane. During the falling process, the seat basin 11 can move towards the first frame 21, returning to its original position.

[0086] The two ends of the second connector 13 can be rotatably connected to the seat 11 and the base frame 12 via a third shaft and a fourth shaft, respectively. In some examples, the second connector 13 can be a plate or a rod. Optionally, there can be two second connectors 13, which are arranged in parallel and spaced apart, located in the left-right direction of the seat 11.

[0087] Optionally, in one embodiment of this disclosure, in the longitudinal direction of the vehicle, the two ends of the second connecting member 13 are respectively hinged to the front end of the seat basin 11 and the front end of the base frame 12. By such an arrangement, the angle at which the seat basin 11 is raised or lowered can be increased, which is beneficial for the seat basin 11 to be in the same plane as the first frame 21 after it is raised.

[0088] Optionally, the second end of the first connector 41 is connected to the rear end of the seat basin 11; in the height direction of the vehicle, the first end of the first connector 41 is connected to the bottom end of the first frame 21. By setting it in this way, the length of the first connector 41 can be reduced, thereby avoiding the structural size of the linkage mechanism 4 being too large, avoiding interference with the structure of the seat basin 11 and the backrest frame 2, and also avoiding interference with the user's riding experience.

[0089] Alternatively, in another embodiment of this disclosure, the seat 11 and the base frame 12 can be connected by a pivot, which allows the seat 11 to rotate relative to the base frame 12, enabling the seat 11 to be raised or lowered. Of course, in other examples, the seat 11 and the base frame 12 can be connected by a multi-stage linkage, which can enable the seat 11 to be raised or lowered; a four-bar linkage may be used.

[0090] Optionally, in one embodiment of this disclosure, the seat frame assembly further includes a locking mechanism 3 connected to the base frame 12. The locking mechanism 3 is configured to lock the seat basin 11 under preset conditions. This configuration allows the seat basin 11 to be locked under preset conditions, preventing it from moving freely and causing safety issues.

[0091] Optionally, in one embodiment of this disclosure, the locking mechanism 3 includes a locking member 31, which is movably connected to the base frame 12. The locking member 31 is configured to connect with the seat basin 11 and lock the seat basin 11 under preset conditions.

[0092] The locking member 31 has a locked state and an unlocked state. In the unlocked state, the locking member 31 is separated from the seat 11, and in the locked state, the locking member 31 is connected to the seat 11.

[0093] The locking member 31, which is designed to move relative to the base frame 12, allows it to connect to or separate from the sink 11. When connected, the locking member 31 locks the sink 11, preventing it from moving and reducing safety concerns. When separated, the sink 11 is not locked and can be adjusted to suit different needs. Understandably, in scenarios with pre-defined conditions, the locking member 31 can immediately lock the sink 11 to prevent safety issues, while in other scenarios, the sink 11 can be adjusted normally without affecting its use, thus significantly reducing safety concerns.

[0094] To facilitate the restriction of the movement direction of the locking member 31, optionally, in one embodiment of this disclosure, the locking member 31 is hinged to the base frame 12, and the locking member 31 is configured to swing relative to the base frame 12, so that the locking member 31 switches between a locked state and an unlocked state. This configuration allows the locking member to swing in a specific direction, thereby, under preset conditions, swinging to connect with the seat basin 11, locking the seat basin 11, and ensuring a high success rate of locking.

[0095] The locking member 31 can rotate around the hinge point between itself and the base frame 12, thereby achieving a swinging motion, and can connect with the seat 11 under preset conditions. In some examples, the locking member 31 can swing in the longitudinal direction of the vehicle, thus allowing it to swing forward or backward. In the event of a frontal or rear-end collision, the locking member 31 swings under inertia and connects with the seat 11, locking it in place. In other examples, the locking member 31 can swing in the lateral direction of the vehicle, thus allowing it to swing left or right. In the event of a lateral collision, the locking member 31 swings under inertia and connects with the seat 11, locking it in place.

[0096] Optionally, in one embodiment of this disclosure, the locking member 31 has a first end and a second end disposed opposite to each other in the height direction of the vehicle. The first end of the locking member 31 is hinged to the base frame 12, and the second end of the locking member 31 is connected to or separated from the seat 11. This arrangement makes it easier for the locking member 31 to swing under inertia, with a large swing amplitude, which facilitates connection with the seat 11 and ensures a high success rate of locking.

[0097] In some examples, the first end of the locking member 31 is located below the second end of the locking member 31, that is, the first end of the locking member 31 is the lower end and the second end of the locking member 31 is the upper end. In other examples, the first end of the locking member 31 is located above the second end of the locking member 31, that is, the first end of the locking member 31 is the upper end and the second end of the locking member 31 is the lower end.

[0098] Alternatively, in another embodiment of this disclosure, in the height direction of the vehicle, the middle part of the locking member 31 is hinged to the base frame 12, and the upper or lower end of the locking member 31 is connected to or separated from the seat basin 11.

[0099] Optionally, in another embodiment of this disclosure, the locking member 31 is slidably connected to the base frame 12, and the locking member 31 is configured to slide relative to the base frame 12 so that the locking member 31 can switch between a locked state and an unlocked state. A slide rail may be provided on the base frame 12, and the locking member 31 can slide back and forth along the direction set by the slide rail, thereby connecting with the seat basin 11.

[0100] Optionally, in one embodiment of this disclosure, the preset condition is set to a vehicle collision. When a vehicle collision occurs, the locking member 31 moves under inertia and connects with the seat 11, locking the seat 11 and preventing it from moving relative to the chassis 12. In some examples, the vehicle collision can occur at the front or rear of the vehicle, or at the side of the vehicle. It should be noted that the locking member 31 can be configured to correspond to different collision scenarios at different locations on the vehicle.

[0101] Optionally, in one embodiment of this disclosure, the seat 11 includes a body 111 and a locking member 112. The locking member 112 is connected to the body 111, and the locking member 31 is provided with a hook groove 32, through which the locking member 31 can connect with the locking member 112. By using the locking member 112 to cooperate with the hook groove 32 of the locking member 31, the locking effect can be improved and the stability of the lock can be guaranteed.

[0102] Understandably, the locking member 31 moves under inertia, and the latching member 112 can engage with the hook groove 32 of the locking member 31, so that the locking member 31 hooks the latching member 112, thereby connecting the two and preventing the entire seat basin 11 from moving. In some examples, the latching member 112 may be a metal rod formed at the bottom of the body 111, with the locking member 31 located below the body 111, thus not affecting the seating function of the seat basin 11.

[0103] Optionally, in one embodiment of this disclosure, the locking mechanism 3 further includes an elastic element 33. The two ends of the elastic element 33 are connected to the locking member 31 and the base frame 12, respectively. The elastic element 33 is used to drive the locking member 31 to move towards the rear of the vehicle. The elastic element 33 ensures that, under non-preset conditions, the locking member 31 remains separated from the seat 11. That is, it does not connect with the seat 11 unless the vehicle collides with it, thus not affecting the adjustment of the seat 11 in different application scenarios.

[0104] Understandably, when the locking member 31 moves due to inertia, it needs to overcome the rebound force of the elastic member 33 to move towards the locking member 112. It should be noted that the rebound force of the elastic member 33 will not be excessive; it only needs to maintain the locking member 31 and the locking member 112 in a separated state under non-preset conditions. In some examples, the elastic member 33 can be a torsion spring, which can be sleeved on the hinge axis connecting the locking member 31 and the base frame 12, with both ends of the torsion spring connected to the locking member 31 and the base frame 12 respectively. In other examples, the elastic member 33 can also be a spring.

[0105] A second aspect of this disclosure also provides a seat, including a first backrest cushion, a second backrest cushion, and the aforementioned seat frame assembly. The first backrest cushion is connected to a first frame 21, and the second backrest cushion is connected to a second frame 22. Optionally, the seat also includes a seat cushion connected to a seat basin 11.

[0106] A third aspect of this disclosure also provides a vehicle including the aforementioned seat frame assembly, or including the aforementioned seat.

[0107] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0108] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0109] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A seat frame assembly, characterized by, Including the backrest frame; The backrest frame includes a first frame and a second frame, with the second frame located behind the first frame; The backrest frame is provided with an unfolded state and a folded state, and the second frame is configured to be able to rotate relative to the first frame so that the backrest frame can switch between the unfolded state and the folded state. In the unfolded state, the first frame and the second frame are unfolded into a single plane; in the folded state, the first frame and the second frame are in face-to-face contact.

2. The seat frame assembly of claim 1, wherein, The backrest frame also includes a locking mechanism connected to the first frame and the second frame. The locking mechanism is configured to lock the second frame so that the backrest frame remains in the folded state.

3. The seat frame assembly of claim 2, wherein, The locking mechanism includes a locking hook and a mating component, one of which is connected to the first frame and the other is connected to the second frame.

4. The seat frame assembly of claim 1, wherein, The backrest frame also includes a support member connected to the second frame. In the unfolded state, the support member supports the second frame so that the first frame and the second frame are on the same plane.

5. The seat frame assembly of claim 4, wherein, The support member is rotatably connected to the second frame. The support member is provided with an unfolded position and a retracted position. The unfolded position is in which the support member is unfolded and set at an angle to the second frame. The retracted position is in which the support member is retracted and fits against the second frame. In the unfolded state, the support member is in the unfolded position; in the folded state, the support member is in the retracted position.

6. The seat frame assembly of claim 5, wherein, The backrest frame also includes a drive unit, which is connected to the second frame and the support member respectively. The drive unit is used to drive the support member to switch between the unfolded position and the retracted position. Wherein, when the support member switches from the retracted position to the deployed position, the support member is configured to push the second frame to rotate in a direction away from the first frame.

7. The seat frame assembly of claim 6, wherein, The backrest frame also includes a slider connected to the support member. The slider is used to contact the first frame to push the second frame to rotate away from the first frame.

8. The seat frame assembly of claim 1, wherein, The seat frame assembly also includes a seat cushion frame, and the backrest frame is configured to rotate relative to the seat cushion frame; The seat frame assembly is provided with a first state and a second state. The backrest frame has an upright position and a reclining position. In the first state, the backrest frame is in the folded state and in the upright position. In the second state, the backrest frame is in the unfolded state and in the reclining position.

9. The seat frame assembly of claim 8, wherein, The first frame has a first end and a second end that are disposed opposite to each other. The first end of the first frame is hinged to the seat cushion frame, and the second end of the first frame is hinged to one end of the second frame.

10. The seat frame assembly of claim 8, wherein, The seat frame includes a seat basin and a base frame. The seat basin is positioned above the base frame and is configured to move relative to the base frame. The first frame is rotatably connected to the base frame.

11. The seat frame assembly of claim 10, wherein, The seat frame assembly also includes a linkage mechanism; The linkage mechanism is connected to the first frame and the seat respectively, and the seat moves with the first frame through the linkage mechanism; The seat has a raised position and a lowered position. In the first state, the seat is in the lowered position and is angled to the first frame. In the second state, the seat is in the raised position and is on the same plane as the first frame.

12. The seat frame assembly of claim 11, wherein, The linkage mechanism includes a first connector, the first end of which is hinged to the first frame, and the second end of which is hinged to the seat.

13. The seat frame assembly of claim 12, wherein, The first frame is rotatably disposed relative to the base frame about a first axis, and the first end of the first connector is rotatably disposed relative to the first frame about a second axis, wherein the first axis coincides with the second axis.

14. The seat frame assembly of claim 13, wherein, The linkage mechanism further includes a pushing part, which is connected to the first frame and is configured to push the first connecting member to raise the seat. The backrest frame is provided with a first rotation stroke and a second rotation stroke. During the first rotation stroke, the pushing part is spaced apart from the first connecting member, and the backrest frame is in the folded state. During the second rotation stroke, the pushing part contacts the first connecting member, and the backrest frame is in the unfolded state.

15. The seat frame assembly of claim 14, wherein, The first connector is provided with a clearance part. During the first rotation stroke, the clearance part can avoid the pushing part, and during the second rotation stroke, the clearance part contacts the pushing part.

16. The seat frame assembly of claim 13, wherein, The seat frame assembly also includes a rotating mechanism, the first frame being rotatably connected to the base frame via the rotating mechanism, and the first axis being set as the rotation axis of the rotating mechanism.

17. The seat frame assembly of claim 16, wherein, The seat frame assembly also includes a side plate, the rotating mechanism is connected to the side plate, and the side plate is connected to the base frame.

18. The seat frame assembly of claim 13, wherein, The first end of the first connector is rotatably connected to the first frame via a first shaft, and the second shaft is set as the axis of the first shaft.

19. The seat frame assembly of claim 12, wherein, The seat frame also includes a second connector, the two ends of which are hinged to the seat basin and the base frame, respectively.

20. The seat frame assembly of claim 19, wherein, In the longitudinal direction of the vehicle, the two ends of the second connector are respectively hinged to the front end of the seat basin and the front end of the chassis, and the second end of the first connector is connected to the rear end of the seat basin. In the height direction of the vehicle, the first end of the first connector is connected to the bottom end of the first frame.

21. The seat frame assembly of claim 10, wherein, The seat frame assembly also includes a locking mechanism connected to the base frame, the locking mechanism being configured to lock the seat basin under preset conditions.

22. The seat frame assembly of claim 21, wherein, The locking mechanism includes a locking member that is movably connected to the base frame; The seat includes a body and a locking member. The locking member is connected to the body, and the locking member is provided with a hook groove, through which the locking member can be connected to the locking member.

23. The seat frame assembly of claim 22, wherein, In the height direction of the vehicle, the locking member has a first end and a second end that are disposed opposite to each other. The first end of the locking member is hinged to the underframe, and the second end of the locking member is connected to or separated from the latching member. The preset condition is set to cause a vehicle collision, and the locking component is configured to swing in the forward / backward or left / right direction of the vehicle.

24. The seat frame assembly of claim 22, wherein, The locking mechanism also includes an elastic element, the two ends of which are connected to the locking member and the base frame, respectively. The elastic element is used to drive the locking member to move toward the rear end of the vehicle.

25. A seat, characterized by Includes a first backrest cushion, a second backrest cushion, and a seat frame assembly as described in any one of claims 1-24; The first backrest cushion is connected to the first frame, and the second backrest cushion is connected to the second frame.

26. A vehicle characterized by It includes the seat frame assembly as described in any one of claims 1-24, or the seat as described in claim 25.

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